ioapic_find_bybase
apic = ioapic_find_bybase(irq);
sc2 = ioapic_find_bybase(pin);
struct ioapic_softc *ioapic_find_bybase(int);
sc2 = ioapic_find_bybase(pin);
struct ioapic_softc *ioapic_find_bybase(int);
apic = ioapic_find_bybase(pin);
apic = ioapic_find_bybase(pin);
apic = ioapic_find_bybase(irq._int);