void
apic_set_redir(struct ioapic_softc *sc, int pin, int idt_vec,
struct cpu_info *ci)
{
u_int32_t redlo;
u_int32_t redhi = 0;
int delmode;
struct ioapic_pin *pp;
struct mp_intr_map *map;
pp = &sc->sc_pins[pin];
map = pp->ip_map;
redlo = (map == NULL) ? IOAPIC_REDLO_MASK : map->redir;
delmode = (redlo & IOAPIC_REDLO_DEL_MASK) >> IOAPIC_REDLO_DEL_SHIFT;
/* XXX magic numbers */
if ((delmode != 0) && (delmode != 1))
;
else if (pp->ip_type == IST_NONE) {
redlo |= IOAPIC_REDLO_MASK;
} else {
redlo |= (idt_vec & 0xff);
redlo &= ~IOAPIC_REDLO_DEL_MASK;
redlo |= (IOAPIC_REDLO_DEL_FIXED << IOAPIC_REDLO_DEL_SHIFT);
redlo &= ~IOAPIC_REDLO_DSTMOD;
/*
* Destination: BSP CPU
*
* XXX will want to distribute interrupts across cpu's
* eventually. most likely, we'll want to vector each
* interrupt to a specific CPU and load-balance across
* cpu's. but there's no point in doing that until after
* most interrupts run without the kernel lock.
*/
redhi |= (ci->ci_apicid << IOAPIC_REDHI_DEST_SHIFT);
/* XXX derive this bit from BIOS info */
if (pp->ip_type == IST_LEVEL)
redlo |= IOAPIC_REDLO_LEVEL;
else
redlo &= ~IOAPIC_REDLO_LEVEL;
if (map != NULL && ((map->flags & 3) == MPS_INTPO_DEF)) {
if (pp->ip_type == IST_LEVEL)
redlo |= IOAPIC_REDLO_ACTLO;
else
redlo &= ~IOAPIC_REDLO_ACTLO;
}
}
/* Do atomic write */
ioapic_write(sc, IOAPIC_REDLO(pin), IOAPIC_REDLO_MASK);
ioapic_write(sc, IOAPIC_REDHI(pin), redhi);
ioapic_write(sc, IOAPIC_REDLO(pin), redlo);
if (mp_verbose)
ioapic_print_redir(sc, "int", pin);
}
void
ioapic_hwmask(struct pic *pic, int pin)
{
u_int32_t redlo;
struct ioapic_softc *sc = (struct ioapic_softc *)pic;
u_long flags;
if (ioapic_cold)
return;
flags = ioapic_lock(sc);
redlo = ioapic_read_ul(sc, IOAPIC_REDLO(pin));
redlo |= IOAPIC_REDLO_MASK;
ioapic_write_ul(sc, IOAPIC_REDLO(pin), redlo);
ioapic_unlock(sc, flags);
}
void
ioapic_print_redir(struct ioapic_softc *sc, char *why, int pin)
{
u_int32_t redirlo = ioapic_read(sc, IOAPIC_REDLO(pin));
u_int32_t redirhi = ioapic_read(sc, IOAPIC_REDHI(pin));
apic_format_redir(sc->sc_pic.pic_name, why, pin, redirhi, redirlo);
}
