SDMAARM_INTR
while (!(ret = READ4(sc, SDMAARM_INTR) & 1)) {
WRITE4(sc, SDMAARM_INTR, ret);
while (!(ret = READ4(sc, SDMAARM_INTR) & 1)) {
WRITE4(sc, SDMAARM_INTR, ret);
pending = READ4(sc, SDMAARM_INTR);
WRITE4(sc, SDMAARM_INTR, pending);