mvxpbm_chunk_size
mvxpbm_chunk_size(sc->sc_bm),
MVXPE_TX_SEGLIMIT, mvxpbm_chunk_size(sc->sc_bm), 0,
reg = MVXPE_PRXDQS_BUFFERSIZE(mvxpbm_chunk_size(sc->sc_bm) >> 3);
mvxpbm_chunk_size(sc->sc_bm), mvxpbm_chunk_count(sc->sc_bm));
size_t mvxpbm_chunk_size(struct mvxpbm_softc *);