rge_write_csi
void rge_write_csi(struct rge_softc *, uint32_t, uint32_t);
rge_write_csi(sc, 0x108,
rge_write_csi(sc, 0x70c, val | 0x27000000);
rge_write_csi(sc, 0x890, val);
rge_write_csi(sc, 0x98, val);