RE_DTCCR_LO
CSR_WRITE_4(sc, RE_DTCCR_LO, RL_ADDR_LO(addr));
bus_space_barrier(sc->rl_btag, sc->rl_bhandle, RE_DTCCR_LO, 4,
CSR_WRITE_4(sc, RE_DTCCR_LO, RL_ADDR_LO(addr) | RE_DTCCR_CMD);
bus_space_barrier(sc->rl_btag, sc->rl_bhandle, RE_DTCCR_LO, 4,
reg = CSR_READ_4(sc, RE_DTCCR_LO);
bus_space_barrier(sc->rl_btag, sc->rl_bhandle, RE_DTCCR_LO, 4,