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Add ACPI lock support.

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Pass the softc, not the device_t to the Notify handler.

Don't invoke the Interpreter from callout context, as it may sleep.
Use AcpiOsQueueForExecution, which is called from taskqueue_swi.
This commit is contained in:
Mike Smith 2001-06-29 21:20:46 +00:00
parent 42a0e93daa
commit 63b0786f0c
1 changed files with 52 additions and 13 deletions
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65
sys/dev/acpica/acpi_thermal.c
View File

@ -40,7 +40,7 @@
/*
* Hooks for the ACPI CA debugging infrastructure
*/
#define _COMPONENT ACPI_THERMAL_ZONE
#define _COMPONENT ACPI_THERMAL
MODULE_NAME("THERMAL")
#define TZ_ZEROC 2732
@ -84,6 +84,7 @@ struct acpi_tz_softc {
static int acpi_tz_probe(device_t dev);
static int acpi_tz_attach(device_t dev);
static int acpi_tz_establish(struct acpi_tz_softc *sc);
static void acpi_tz_monitor(struct acpi_tz_softc *sc);
static void acpi_tz_all_off(struct acpi_tz_softc *sc);
static void acpi_tz_switch_cooler_off(ACPI_OBJECT *obj, void *arg);
static void acpi_tz_switch_cooler_on(ACPI_OBJECT *obj, void *arg);
@ -114,15 +115,21 @@ DRIVER_MODULE(acpi_tz, acpi, acpi_tz_driver, acpi_tz_devclass, 0, 0);
static int
acpi_tz_probe(device_t dev)
{
int result;
ACPI_LOCK;
/* no FUNCTION_TRACE - too noisy */
if ((acpi_get_type(dev) == ACPI_TYPE_THERMAL) &&
!acpi_disabled("thermal")) {
device_set_desc(dev, "thermal zone");
return(-10);
result = -10;
} else {
result = ENXIO;
}
return(ENXIO);
ACPI_UNLOCK;
return(result);
}
/*
@ -136,6 +143,8 @@ acpi_tz_attach(device_t dev)
FUNCTION_TRACE(__func__);
ACPI_LOCK;
sc = device_get_softc(dev);
sc->tz_dev = dev;
sc->tz_handle = acpi_get_handle(dev);
@ -145,19 +154,22 @@ acpi_tz_attach(device_t dev)
* structures.
*/
if ((error = acpi_tz_establish(sc)) != 0)
return_VALUE(error);
goto out;
/*
* Register for any Notify events sent to this zone.
*/
AcpiInstallNotifyHandler(sc->tz_handle, ACPI_DEVICE_NOTIFY,
acpi_tz_notify_handler, dev);
acpi_tz_notify_handler, sc);
/*
* Don't bother evaluating/printing the temperature at this point;
* on many systems it'll be bogus until the EC is running.
*/
return_VALUE(0);
out:
ACPI_UNLOCK;
return_VALUE(error);
}
/*
@ -174,6 +186,8 @@ acpi_tz_establish(struct acpi_tz_softc *sc)
FUNCTION_TRACE(__func__);
ACPI_ASSERTLOCK;
/*
* Power everything off and erase any existing state.
*/
@ -242,6 +256,8 @@ acpi_tz_monitor(struct acpi_tz_softc *sc)
FUNCTION_TRACE(__func__);
ACPI_ASSERTLOCK;
/*
* Get the current temperature.
*/
@ -250,6 +266,7 @@ acpi_tz_monitor(struct acpi_tz_softc *sc)
/* XXX disable zone? go to max cooling? */
return_VOID;
}
DEBUG_PRINT(TRACE_VALUES, ("got %d.%dC\n", TZ_KELVTOC(temp)));
/*
* Work out what we ought to be doing right now.
@ -319,6 +336,8 @@ acpi_tz_all_off(struct acpi_tz_softc *sc)
int i;
FUNCTION_TRACE(__func__);
ACPI_ASSERTLOCK;
/*
* Scan all the _AL objects, and turn them all off.
@ -350,6 +369,8 @@ acpi_tz_switch_cooler_off(ACPI_OBJECT *obj, void *arg)
FUNCTION_TRACE(__func__);
ACPI_ASSERTLOCK;
switch(obj->Type) {
case ACPI_TYPE_STRING:
DEBUG_PRINT(TRACE_OBJECTS, ("called to turn %s off\n", obj->String.Pointer));
@ -383,16 +404,24 @@ static void
acpi_tz_switch_cooler_on(ACPI_OBJECT *obj, void *arg)
{
struct acpi_tz_softc *sc = (struct acpi_tz_softc *)arg;
ACPI_HANDLE cooler, parent;
ACPI_HANDLE cooler;
FUNCTION_TRACE(__func__);
ACPI_ASSERTLOCK;
switch(obj->Type) {
case ACPI_TYPE_STRING:
DEBUG_PRINT(TRACE_OBJECTS, ("called to turn %s off\n", obj->String.Pointer));
/* find the handle for the device and turn it off */
if (acpi_GetHandleInScope(sc->tz_handle, obj->String.Pointer, &cooler) == AE_OK)
/*
* Find the handle for the device and turn it off.
* The String object here seems to contain a fully-qualified path, so we
* don't have to search for it in our parents.
*
* XXX This may not always be the case.
*/
if (AcpiGetHandle(obj->String.Pointer, NULL, &cooler) == AE_OK)
acpi_pwr_switch_consumer(cooler, ACPI_STATE_D0);
break;
@ -413,6 +442,8 @@ acpi_tz_getparam(struct acpi_tz_softc *sc, char *node, int *data)
FUNCTION_TRACE(__func__);
ACPI_ASSERTLOCK;
if (acpi_EvaluateInteger(sc->tz_handle, node, data) != AE_OK) {
*data = -1;
} else {
@ -432,13 +463,17 @@ acpi_tz_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
FUNCTION_TRACE(__func__);
ACPI_ASSERTLOCK;
switch(notify) {
case TZ_NOTIFY_TEMPERATURE:
acpi_tz_monitor(sc); /* temperature change occurred */
/* temperature change occurred */
AcpiOsQueueForExecution(OSD_PRIORITY_HIGH, (OSD_EXECUTION_CALLBACK)acpi_tz_monitor, sc);
break;
case TZ_NOTIFY_DEVICES:
case TZ_NOTIFY_LEVELS:
acpi_tz_establish(sc); /* zone devices/setpoints changed */
/* zone devices/setpoints changed */
AcpiOsQueueForExecution(OSD_PRIORITY_HIGH, (OSD_EXECUTION_CALLBACK)acpi_tz_establish, sc);
break;
default:
device_printf(sc->tz_dev, "unknown Notify event 0x%x\n", notify);
@ -455,11 +490,15 @@ acpi_tz_timeout(void *arg)
{
struct acpi_tz_softc *sc = (struct acpi_tz_softc *)arg;
ACPI_LOCK;
/* check temperature, take action */
acpi_tz_monitor(sc);
AcpiOsQueueForExecution(OSD_PRIORITY_HIGH, (OSD_EXECUTION_CALLBACK)acpi_tz_monitor, sc);
/* XXX passive cooling actions? */
/* re-register ourself */
sc->tz_timeout = timeout(acpi_tz_timeout, sc, TZ_POLLRATE);
ACPI_UNLOCK;
}