PCN_RES
sc->pcn_res = bus_alloc_resource_any(dev, PCN_RES, &rid, RF_ACTIVE);
bus_release_resource(dev, PCN_RES, PCN_RID, sc->pcn_res);
sc->pcn_res = bus_alloc_resource_any(dev, PCN_RES, &rid, RF_ACTIVE);
bus_release_resource(dev, PCN_RES, PCN_RID, sc->pcn_res);