bus_space_barrier
#define bus_space_barrier(t, h, o, l, f) \
#define bus_space_barrier(t, h, o, l, f) \
#define bus_space_barrier(t, h, o, l, f) (*(t)->bs_barrier)(h, o, l, f)
#define bus_space_barrier(t, h, o, l, f) \
#define bus_space_barrier BUS_SAN(barrier)
bus_space_barrier(bus_space_tag_t tag __unused, bus_space_handle_t bsh __unused,