rge_read_csi
uint32_t rge_read_csi(struct rge_softc *, uint32_t);
rge_read_csi(sc, 0x108) | 0x00100000);
val = rge_read_csi(sc, 0x70c) & ~0x3f000000;
val = rge_read_csi(sc, 0x890) & ~0x00000001;
val = rge_read_csi(sc, 0x98) & ~0x0000ff00;