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Diffstat (limited to 'sys/dev/acpi/acpiprt.c')
-rw-r--r--sys/dev/acpi/acpiprt.c145
1 files changed, 90 insertions, 55 deletions
diff --git a/sys/dev/acpi/acpiprt.c b/sys/dev/acpi/acpiprt.c
index 112b95a49df..86cd08b217c 100644
--- a/sys/dev/acpi/acpiprt.c
+++ b/sys/dev/acpi/acpiprt.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: acpiprt.c,v 1.27 2008/06/11 04:42:09 marco Exp $ */
+/* $OpenBSD: acpiprt.c,v 1.28 2008/12/07 14:33:26 kettenis Exp $ */
/*
* Copyright (c) 2006 Mark Kettenis <kettenis@openbsd.org>
*
@@ -41,13 +41,23 @@
#include "ioapic.h"
+struct acpiprt_map {
+ int bus, dev;
+ int pin;
+ int irq;
+ struct acpiprt_softc *sc;
+ struct aml_node *node;
+ SIMPLEQ_ENTRY(acpiprt_map) list;
+};
+
+SIMPLEQ_HEAD(, acpiprt_map) acpiprt_map_list =
+ SIMPLEQ_HEAD_INITIALIZER(acpiprt_map_list);
+
int acpiprt_match(struct device *, void *, void *);
void acpiprt_attach(struct device *, struct device *, void *);
int acpiprt_getirq(union acpi_resource *crs, void *arg);
int acpiprt_getminbus(union acpi_resource *, void *);
-#if 0
-int acpiprt_showprs(union acpi_resource *, void *);
-#endif
+int acpiprt_checkprs(union acpi_resource *, void *);
struct acpiprt_softc {
struct device sc_dev;
@@ -68,7 +78,7 @@ struct cfdriver acpiprt_cd = {
void acpiprt_prt_add(struct acpiprt_softc *, struct aml_value *);
int acpiprt_getpcibus(struct acpiprt_softc *, struct aml_node *);
-void acpiprt_route_interrupt(struct acpiprt_softc *, struct aml_node *);
+void acpiprt_route_interrupt(int bus, int dev, int pin);
int
acpiprt_match(struct device *parent, void *match, void *aux)
@@ -121,36 +131,35 @@ acpiprt_attach(struct device *parent, struct device *self, void *aux)
aml_freevalue(&res);
}
-#if 0
int
-acpiprt_showprs(union acpi_resource *crs, void *arg)
+acpiprt_checkprs(union acpi_resource *crs, void *arg)
{
int *irq = (int *)arg;
- int typ;
+ int typ, i;
typ = AML_CRSTYPE(crs);
switch (typ) {
case SR_IRQ:
- printf("possible irq:[ ");
- for (typ = 0; typ < sizeof(crs->sr_irq.irq_mask) * 8; typ++) {
- if (crs->sr_irq.irq_mask & (1L << typ))
- printf("%d%s ", typ, (typ == *irq) ? "*" : "");
+ for (i = 0; i < sizeof(crs->sr_irq.irq_mask) * 8; i++) {
+ if (crs->sr_irq.irq_mask & (1L << i)) {
+ if (i == *irq)
+ return (0);
+ }
}
- printf("]\n");
break;
case LR_EXTIRQ:
- printf("possible irq: [ ");
- for (typ = 0; typ < crs->lr_extirq.irq_count; typ++)
- printf("%d%s ", crs->lr_extirq.irq[typ],
- crs->lr_extirq.irq[typ] == *irq ? "*" : "");
- printf("]\n");
+ for (i = 0; i < crs->lr_extirq.irq_count; i++) {
+ if (crs->lr_extirq.irq[i] == *irq)
+ return (0);
+ }
break;
default:
- printf("Unknown interrupt : %x\n", typ);
+ printf("unknown interrupt: %x\n", typ);
}
+
+ *irq = -1;
return (0);
}
-#endif
int
acpiprt_getirq(union acpi_resource *crs, void *arg)
@@ -167,7 +176,7 @@ acpiprt_getirq(union acpi_resource *crs, void *arg)
*irq = aml_letohost32(crs->lr_extirq.irq[0]);
break;
default:
- printf("Unknown interrupt: %x\n", typ);
+ printf("unknown interrupt: %x\n", typ);
}
return (0);
}
@@ -178,7 +187,7 @@ acpiprt_prt_add(struct acpiprt_softc *sc, struct aml_value *v)
struct aml_node *node;
struct aml_value res, *pp;
u_int64_t addr;
- int pin, irq, sta;
+ int pin, irq, newirq, sta;
#if NIOAPIC > 0
struct mp_intr_map *map;
struct ioapic_softc *apic;
@@ -187,6 +196,7 @@ acpiprt_prt_add(struct acpiprt_softc *sc, struct aml_value *v)
pcitag_t tag;
pcireg_t reg;
int bus, dev, func, nfuncs;
+ struct acpiprt_map *p;
if (v->type != AML_OBJTYPE_PACKAGE || v->length != 4) {
printf("invalid mapping object\n");
@@ -228,18 +238,8 @@ acpiprt_prt_add(struct acpiprt_softc *sc, struct aml_value *v)
sta = aml_val2int(&res);
aml_freevalue(&res);
- if ((sta & STA_ENABLED) == 0) {
- if ((sta & STA_PRESENT) == 0)
- return;
-
- acpiprt_route_interrupt(sc, node);
-
- aml_evalname(sc->sc_acpi, node, "_STA", 0, NULL, &res);
- sta = aml_val2int(&res);
- aml_freevalue(&res);
- if ((sta & STA_ENABLED) == 0)
- return;
- }
+ if ((sta & STA_PRESENT) == 0)
+ return;
if (aml_evalname(sc->sc_acpi, node, "_CRS", 0, NULL, &res)) {
printf("no _CRS method\n");
@@ -255,18 +255,37 @@ acpiprt_prt_add(struct acpiprt_softc *sc, struct aml_value *v)
acpiprt_getirq, &irq);
aml_freevalue(&res);
-#if 0
- /* Get Possible IRQs */
- if (!aml_evalname(sc->sc_acpi, node, "_PRS.", 0, NULL, &res)){
+ /* Check Possible IRQs */
+ if (!aml_evalname(sc->sc_acpi, node, "_PRS", 0, NULL, &res)){
if (res.type == AML_OBJTYPE_BUFFER &&
- res.length >= 6)
- {
+ res.length >= 6) {
+ aml_parse_resource(res.length, res.v_buffer,
+ acpiprt_checkprs, &irq);
aml_parse_resource(res.length, res.v_buffer,
- acpiprt_showprs, &irq);
+ acpiprt_getirq, &newirq);
}
aml_freevalue(&res);
}
-#endif
+
+ if (irq == -1) {
+ /*
+ * Current IRQ is "impossible". Use the first
+ * available Possible IRQ instead. We
+ * postpone re-routeing the interrupt until we
+ * establish a handler for it.
+ */
+ irq = newirq;
+ }
+
+ if ((p = malloc(sizeof(*p), M_ACPI, M_NOWAIT)) == NULL)
+ return;
+ p->bus = sc->sc_bus;
+ p->dev = ACPI_PCI_DEV(addr << 16);
+ p->pin = pin;
+ p->irq = irq;
+ p->sc = sc;
+ p->node = node;
+ SIMPLEQ_INSERT_TAIL(&acpiprt_map_list, p, list);
} else {
irq = aml_val2int(v->v_package[3]);
}
@@ -413,43 +432,59 @@ acpiprt_getpcibus(struct acpiprt_softc *sc, struct aml_node *node)
}
void
-acpiprt_route_interrupt(struct acpiprt_softc *sc, struct aml_node *node)
+acpiprt_route_interrupt(int bus, int dev, int pin)
{
+ struct acpiprt_softc *sc;
+ struct acpiprt_map *p;
+ struct aml_node *node = NULL;
struct aml_value res, res2;
union acpi_resource *crs;
- int irq;
-
- if (aml_evalname(sc->sc_acpi, node, "_PRS", 0, NULL, &res)) {
- printf("no _PRS method\n");
- return;
+ int irq, newirq, sta;
+
+ SIMPLEQ_FOREACH(p, &acpiprt_map_list, list) {
+ if (p->bus == bus && p->dev == dev && p->pin == (pin - 1)) {
+ newirq = p->irq;
+ sc = p->sc;
+ node = p->node;
+ break;
+ }
}
+ if (node == NULL)
+ return;
- if (res.type != AML_OBJTYPE_BUFFER || res.length < 6) {
- printf("invalid _PRS object\n");
- aml_freevalue(&res);
+ if (aml_evalname(sc->sc_acpi, node, "_STA", 0, NULL, &res)) {
+ printf("no _STA method\n");
return;
}
- aml_parse_resource(res.length, res.v_buffer, acpiprt_getirq, &irq);
+
+ sta = aml_val2int(&res);
aml_freevalue(&res);
+ KASSERT(sta & STA_PRESENT);
if (aml_evalname(sc->sc_acpi, node, "_CRS", 0, NULL, &res)) {
- printf("no _PRS method\n");
+ printf("no _CRS method\n");
return;
}
-
if (res.type != AML_OBJTYPE_BUFFER || res.length < 6) {
printf("invalid _CRS object\n");
aml_freevalue(&res);
return;
}
+ aml_parse_resource(res.length, res.v_buffer, acpiprt_getirq, &irq);
+
+ /* Only re-route interrupts when necessary. */
+ if ((sta & STA_ENABLED) && irq == newirq) {
+ aml_freevalue(&res);
+ return;
+ }
crs = (union acpi_resource *)res.v_buffer;
switch (AML_CRSTYPE(crs)) {
case SR_IRQ:
- crs->sr_irq.irq_mask = htole16(1 << irq);
+ crs->sr_irq.irq_mask = htole16(1 << newirq);
break;
case LR_EXTIRQ:
- crs->lr_extirq.irq[0] = htole32(irq);
+ crs->lr_extirq.irq[0] = htole32(newirq);
break;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 18:20:30 +0000