BRSW_STAT_PAGE
brswphy_read16(sc, BRSW_STAT_PAGE, BRSW_LINK_STAT, &link);
brswphy_read16(sc, BRSW_STAT_PAGE, BRSW_DUPLEX_STAT_GE, &duplex);
brswphy_read32(sc, BRSW_STAT_PAGE, BRSW_SPEED_STAT, &speed);