apldart_load_map
error = apldart_load_map(as, map, flags);
int apldart_load_map(struct apldart_stream *, bus_dmamap_t, int);
error = apldart_load_map(as, map, flags);
error = apldart_load_map(as, map, flags);
error = apldart_load_map(as, map, flags);