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This was only half-implemented when I committed it, and certainly didn't

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work.  Now it's implemented and seems to work.
This commit is contained in:
Mike Smith 2001-07-06 09:00:07 +00:00
parent 6120025f04
commit 2b80a316c3
1 changed files with 92 additions and 30 deletions
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122
sys/dev/acpica/acpi_powerres.c
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@ -77,6 +77,10 @@ MALLOC_DEFINE(M_ACPIPWR, "acpipwr", "ACPI power resources");
#define _COMPONENT ACPI_POWER
MODULE_NAME("POWERRES")
/* return values from _STA on a power resource */
#define ACPI_PWR_OFF 0
#define ACPI_PWR_ON 1
/*
* A relationship between a power resource and a consumer.
*/
@ -106,9 +110,6 @@ struct acpi_powerresource {
ACPI_HANDLE ap_resource; /* the resource's handle */
ACPI_INTEGER ap_systemlevel;
ACPI_INTEGER ap_order;
int ap_state;
#define ACPI_PWR_OFF 0
#define ACPI_PWR_ON 1
};
TAILQ_HEAD(acpi_powerresource_list, acpi_powerresource) acpi_powerresources;
@ -171,35 +172,31 @@ acpi_pwr_register_resource(ACPI_HANDLE res)
}
obj = buf.Pointer;
if (obj->Common.Type != ACPI_TYPE_POWER) {
DEBUG_PRINT(TRACE_OBJECTS, ("bad power resource object\n"));
status = AE_TYPE;
goto out;
DEBUG_PRINT(TRACE_OBJECTS, ("questionable power resource object %s\n", acpi_name(res)));
/* XXX ACPI CA seems to return ACPI_TYPE_ANY, needs to be fixed */
rp->ap_systemlevel = 0;
rp->ap_order = 0;
} else {
rp->ap_systemlevel = obj->PowerResource.SystemLevel;
rp->ap_order = obj->PowerResource.ResourceOrder;
}
rp->ap_systemlevel = obj->PowerResource.SystemLevel;
rp->ap_order = obj->PowerResource.ResourceOrder;
/* get the current state of the resource */
if ((status = acpi_EvaluateInteger(rp->ap_resource, "_STA", &rp->ap_state)) != AE_OK) {
/* XXX is this an error? */
DEBUG_PRINT(TRACE_OBJECTS, ("can't get current power resource state\n"));
goto out;
}
/* sort the resource into the list */
status = AE_OK;
srp = TAILQ_FIRST(&acpi_powerresources);
if ((srp == NULL) || (rp->ap_order < srp->ap_order)) {
TAILQ_INSERT_HEAD(&acpi_powerresources, rp, ap_link);
goto out;
goto done;
}
TAILQ_FOREACH(srp, &acpi_powerresources, ap_link)
if (rp->ap_order < srp->ap_order) {
TAILQ_INSERT_BEFORE(srp, rp, ap_link);
goto out;
goto done;
}
TAILQ_INSERT_TAIL(&acpi_powerresources, rp, ap_link);
DEBUG_PRINT(TRACE_OBJECTS, ("registered power resource %s\n", acpi_name(res)));
done:
DEBUG_PRINT(TRACE_OBJECTS, ("registered power resource %s\n", acpi_name(res)));
out:
if (obj != NULL)
AcpiOsFree(obj);
@ -397,9 +394,12 @@ acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state)
* Now we are ready to switch, so kill off any current power resource references.
*/
res_changed = 0;
TAILQ_FOREACH(pr, &pc->ac_references, ar_clink) {
TAILQ_REMOVE(&pr->ar_resource->ap_references, pr, ar_rlink);
while((pr = TAILQ_FIRST(&pc->ac_references)) != NULL) {
res_changed = 1;
DEBUG_PRINT(TRACE_OBJECTS, ("removing reference to %s\n", acpi_name(pr->ar_resource->ap_resource)));
TAILQ_REMOVE(&pr->ar_resource->ap_references, pr, ar_rlink);
TAILQ_REMOVE(&pc->ac_references, pr, ar_clink);
free(pr, M_ACPIPWR);
}
/*
@ -446,12 +446,52 @@ static void
acpi_pwr_reference_resource(ACPI_OBJECT *obj, void *arg)
{
struct acpi_powerconsumer *pc = (struct acpi_powerconsumer *)arg;
struct acpi_powerreference *pr;
struct acpi_powerresource *rp;
ACPI_HANDLE res;
ACPI_STATUS status;
FUNCTION_TRACE(__func__);
DEBUG_PRINT(TRACE_OBJECTS, ("called to create a reference using object type %d\n",
obj->Type));
/* check the object type */
if (obj->Type != ACPI_TYPE_STRING) {
DEBUG_PRINT(TRACE_OBJECTS, ("don't know how to create a power reference to object type %d\n",
obj->Type));
return_VOID;
}
DEBUG_PRINT(TRACE_OBJECTS, ("building reference from %s to %s\n",
acpi_name(pc->ac_consumer), obj->String.Pointer));
/* get the handle of the resource */
if (ACPI_FAILURE(status = AcpiGetHandle(NULL, obj->String.Pointer, &res))) {
DEBUG_PRINT(TRACE_OBJECTS, ("couldn't find power resource %s\n",
obj->String.Pointer));
return_VOID;
}
/* create/look up the resource */
if (ACPI_FAILURE(status = acpi_pwr_register_resource(res))) {
DEBUG_PRINT(TRACE_OBJECTS, ("couldn't register power resource %s - %s\n",
obj->String.Pointer, acpi_strerror(status)));
return_VOID;
}
if ((rp = acpi_pwr_find_resource(res)) == NULL) {
DEBUG_PRINT(TRACE_OBJECTS, ("power resource list corrupted\n"));
return_VOID;
}
DEBUG_PRINT(TRACE_OBJECTS, ("found power resource %s\n", acpi_name(rp->ap_resource)));
/* create a reference between the consumer and resource */
if ((pr = malloc(sizeof(*pr), M_ACPIPWR, M_NOWAIT | M_ZERO)) == NULL) {
DEBUG_PRINT(TRACE_OBJECTS, ("couldn't allocate memory for a power consumer reference\n"));
return_VOID;
}
pr->ar_consumer = pc;
pr->ar_resource = rp;
TAILQ_INSERT_TAIL(&pc->ac_references, pr, ar_clink);
TAILQ_INSERT_TAIL(&rp->ap_references, pr, ar_rlink);
return_VOID;
}
@ -475,8 +515,11 @@ acpi_pwr_switch_power(void)
* Sweep the list forwards turning things on.
*/
TAILQ_FOREACH(rp, &acpi_powerresources, ap_link) {
if (rp->ap_state != ACPI_PWR_ON)
continue; /* not turning this one on */
if (TAILQ_FIRST(&rp->ap_references) == NULL) {
DEBUG_PRINT(TRACE_OBJECTS, ("%s has no references, not turning on\n",
acpi_name(rp->ap_resource)));
continue;
}
/* we could cache this if we trusted it not to change under us */
if ((status = acpi_EvaluateInteger(rp->ap_resource, "_STA", &cur)) != AE_OK) {
@ -490,16 +533,27 @@ acpi_pwr_switch_power(void)
* effort; we don't know what to do if it fails, so checking wouldn't
* help much.
*/
if (cur != ACPI_PWR_ON)
AcpiEvaluateObject(rp->ap_resource, "_ON", NULL, NULL);
if (cur != ACPI_PWR_ON) {
if (ACPI_FAILURE(status = AcpiEvaluateObject(rp->ap_resource, "_ON", NULL, NULL))) {
DEBUG_PRINT(TRACE_OBJECTS, ("failed to switch %s on - %s\n",
acpi_name(rp->ap_resource), acpi_strerror(status)));
} else {
DEBUG_PRINT(TRACE_OBJECTS, ("switched %s on\n", acpi_name(rp->ap_resource)));
}
} else {
DEBUG_PRINT(TRACE_OBJECTS, ("%s is already on\n", acpi_name(rp->ap_resource)));
}
}
/*
* Sweep the list backwards turning things off.
*/
TAILQ_FOREACH_REVERSE(rp, &acpi_powerresources, acpi_powerresource_list, ap_link) {
if (rp->ap_state != ACPI_PWR_OFF)
continue; /* not turning this one off */
if (TAILQ_FIRST(&rp->ap_references) != NULL) {
DEBUG_PRINT(TRACE_OBJECTS, ("%s has references, not turning off\n",
acpi_name(rp->ap_resource)));
continue;
}
/* we could cache this if we trusted it not to change under us */
if ((status = acpi_EvaluateInteger(rp->ap_resource, "_STA", &cur)) != AE_OK) {
@ -513,8 +567,16 @@ acpi_pwr_switch_power(void)
* effort; we don't know what to do if it fails, so checking wouldn't
* help much.
*/
if (cur != ACPI_PWR_OFF)
AcpiEvaluateObject(rp->ap_resource, "_OFF", NULL, NULL);
if (cur != ACPI_PWR_OFF) {
if (ACPI_FAILURE(status = AcpiEvaluateObject(rp->ap_resource, "_OFF", NULL, NULL))) {
DEBUG_PRINT(TRACE_OBJECTS, ("failed to switch %s off - %s\n",
acpi_name(rp->ap_resource), acpi_strerror(status)));
} else {
DEBUG_PRINT(TRACE_OBJECTS, ("switched %s off\n", acpi_name(rp->ap_resource)));
}
} else {
DEBUG_PRINT(TRACE_OBJECTS, ("%s is already off\n", acpi_name(rp->ap_resource)));
}
}
return_ACPI_STATUS(AE_OK);
}