bus_intr_establish
#define bus_intr_establish(t, i, c, f, ihf, iha) \
bus_intr_establish(
bus_intr_establish(bus_space_tag_t t, int p, int l, int (*h)(void *), void *a)
bus_intr_establish(bus_space_tag_t t, int p, int l, int f, int (*h)(void *),