AC_IOC
#define AC_MEM_ADMIN_VER (AC_IOC|0) /* arg is &ac_mem_version_t */
#define AC_MEM_CONFIGURE (AC_IOC|1) /* private == NULL */
#define AC_MEM_UNCONFIGURE (AC_IOC|2) /* private == NULL */
#define AC_MEM_STAT (AC_IOC|3) /* ac_stat_t */
#define AC_MEM_TEST_START (AC_IOC|4) /* ac_mem_test_start_t */
#define AC_MEM_TEST_STOP (AC_IOC|5) /* ac_mem_test_stop_t */
#define AC_MEM_TEST_READ (AC_IOC|6) /* ac_mem_test_read_t */
#define AC_MEM_TEST_WRITE (AC_IOC|7) /* ac_mem_test_write_t */
#define AC_MEM_EXERCISE (AC_IOC|128) /* various */