amr_ccb
ac->ac_ccb = sc->amr_ccb + ac->ac_slot;
(ac->ac_slot * sizeof(union amr_ccb));
if (sc->amr_ccb)
bus_dmamem_free(sc->amr_ccb_dmat, sc->amr_ccb, sc->amr_ccb_dmamap);
ccbsize = sizeof(union amr_ccb) * AMR_MAXCMD;
error = bus_dmamem_alloc(sc->amr_ccb_dmat, (void **)&sc->amr_ccb,
bus_dmamap_load(sc->amr_ccb_dmat, sc->amr_ccb_dmamap, sc->amr_ccb,
bzero(sc->amr_ccb, ccbsize);
union amr_ccb *ac_ccb;
union amr_ccb *amr_ccb;