ATU_OB_REGIONS
KASSERT(idx < ATU_OB_REGIONS, ("Invalid region index: %d\n", idx));
KASSERT(idx < ATU_OB_REGIONS, ("Invalid region index: %d\n", idx));
#define ATU_OB_REGION_0_SIZE (( ATU_OB_REGIONS - 1) * ATU_OB_REGION_SIZE)