__pbs_ws
#define bus_space_write_1(t, h, o, v) __pbs_ws(1,u_int8_t,(t),(h),(o),(v))
#define bus_space_write_2(t, h, o, v) __pbs_ws(2,u_int16_t,(t),(h),(o),(v))
#define bus_space_write_4(t, h, o, v) __pbs_ws(4,u_int32_t,(t),(h),(o),(v))
#define bus_space_write_8(t, h, o, v) __pbs_ws(8,u_int64_t,(t),(h),(o),(v))