CPSW_CPDMA_RX_CP
cpsw_read_4(sc, CPSW_CPDMA_RX_CP(0)), 0, 0);
cpsw_write_4(sc, CPSW_CPDMA_RX_CP(0),
stat = cpsw_read_4(sc, CPSW_CPDMA_RX_CP(0));
cpsw_write_4(sc, CPSW_CPDMA_RX_CP(i), 0);