bus_read_2
return bus_read_2(sc->mem_res, off);
return bus_read_2(sc->mem_res[slot->num], off);
#define INW_OFF(o) bus_read_2(np->io_res, (o))
#define INW_OFF(o) bus_read_2(np->mmio_res, (o))
bus_read_2((sc)->tco_res, (off))
(bus_read_2(amdpm->res, register))
#define vtmmio_read_config_2(sc, o) bus_read_2((sc)->res[0], (o))
#define vtpci_read_config_2(sc, o) bus_read_2((sc)->vtpci_res, (o))