diff options
Diffstat (limited to 'sys/dev/acpi/acpimadt.c')
| -rw-r--r-- | sys/dev/acpi/acpimadt.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/sys/dev/acpi/acpimadt.c b/sys/dev/acpi/acpimadt.c index 979f658afc7..f7230419249 100644 --- a/sys/dev/acpi/acpimadt.c +++ b/sys/dev/acpi/acpimadt.c @@ -1,4 +1,4 @@ -/* $OpenBSD: acpimadt.c,v 1.14 2007/11/16 16:21:05 deraadt Exp $ */ +/* $OpenBSD: acpimadt.c,v 1.15 2007/11/18 21:52:03 kettenis Exp $ */ /* * Copyright (c) 2006 Mark Kettenis <kettenis@openbsd.org> * @@ -293,11 +293,21 @@ acpimadt_attach(struct device *parent, struct device *self, void *aux) addr += entry->madt_lapic.length; } + /* + * ISA interrupts are supposed to be identity mapped unless + * there is an override, in which case we will already have a + * mapping for the interrupt. + */ for (pin = 0; pin < ICU_LEN; pin++) { - apic = ioapic_find_bybase(pin); - if (apic->sc_pins[pin].ip_map != NULL) + /* Skip if we already have a mapping for this interrupt. */ + for (map = mp_isa_bus->mb_intrs; map != NULL; map = map->next) + if (map->bus_pin == pin) + break; + if (map != NULL) continue; + apic = ioapic_find_bybase(pin); + map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT | M_ZERO); if (map == NULL) return; |