RSB_READ
stat = RSB_READ(sc, RSB_STAT_REG);
if ((RSB_READ(sc, RSB_CTRL_REG) & RSB_CTRL_SOFT_RESET) == 0)
sc->sc_stat |= RSB_READ(sc, RSB_STAT_REG);
RSB_READ(sc, RSB_STAT_REG) & RSB_STAT_MASK);
ctrl = RSB_READ(sc, RSB_CTRL_REG);
ctrl = RSB_READ(sc, RSB_CTRL_REG);
uint32_t data = RSB_READ(sc, RSB_DATA0_REG);