might_bounce
if (might_bounce(dmat, map, (bus_addr_t)buf, buflen)) {
if (might_bounce(dmat, map, (bus_addr_t)buf, buflen)) {
if (!might_bounce(dmat, NULL, buf, buflen))
if (might_bounce(dmat, map, (bus_addr_t)buf, buflen)) {
if (might_bounce(dmat, map, (bus_addr_t)buf, buflen)) {