AGE_CMB_BLOCK_SZ
memset(rd->age_cmb_block, 0, AGE_CMB_BLOCK_SZ);
error = bus_dmamap_create(sc->sc_dmat, AGE_CMB_BLOCK_SZ, 1,
AGE_CMB_BLOCK_SZ, 0, BUS_DMA_NOWAIT,
error = bus_dmamem_alloc(sc->sc_dmat, AGE_CMB_BLOCK_SZ,
nsegs, AGE_CMB_BLOCK_SZ, (void **)&sc->age_rdata.age_cmb_block,
memset(sc->age_rdata.age_cmb_block, 0, AGE_CMB_BLOCK_SZ);
sc->age_rdata.age_cmb_block, AGE_CMB_BLOCK_SZ, NULL,