MVGBE_RX_RING_ADDR
MVGBE_WRITE(sc, MVGBE_CRDP(0), MVGBE_RX_RING_ADDR(sc, 0));
H2MVGBE32(MVGBE_RX_RING_ADDR(sc, 0));
H2MVGBE32(MVGBE_RX_RING_ADDR(sc, i + 1));