_BD_CALL
r = _BD_CALL(t, _dmamap_create)(t, t0, s, n, m, b, f, p);
_BD_CALL(t, _dmamap_destroy)(t, t0, p);
r = _BD_CALL(t, _dmamap_load)(t, t0, m, b, s, p, f);
r = _BD_CALL(t, _dmamap_load_mbuf)(t, t0, m, b, f);
r = _BD_CALL(t, _dmamap_load_uio)(t, t0, m, u, f);
r = _BD_CALL(t, _dmamap_load_raw)(t, t0, m, sg, n, s, f);
_BD_CALL(t, _dmamap_unload)(t, t0, p);
_BD_CALL(t, _dmamap_sync)(t, t0, p, o, l, ops);
ret = _BD_CALL(t, _dmamem_alloc)(t, t0, s, a, b, sg, n, r, f);
_BD_CALL(t, _dmamem_free)(t, t0, sg, n);
r = _BD_CALL(t, _dmamem_map)(t, t0, sg, n, s, k, f);
_BD_CALL(t, _dmamem_unmap)(t, t0, k, s);
r = _BD_CALL(t, _dmamem_mmap)(t, t0, sg, n, o, p, f);