BMD_PAGESIZE
if (bus_space_map(iot, sc->sc_window, BMD_PAGESIZE, 0, &sc->sc_bank)) {
disksize = sc->sc_maxpage * BMD_PAGESIZE;
page = offset / BMD_PAGESIZE;
pg_offset = offset % BMD_PAGESIZE;
pg_resid = MIN(resid, BMD_PAGESIZE - pg_offset);
return (sc->sc_maxpage * BMD_PAGESIZE) >> DEV_BSHIFT;
#define BLKS_PER_PAGE (BMD_PAGESIZE / BMD_BSIZE)