29 #define	READ4(_sc, _reg)	\  argument
30 	bus_space_read_4(_sc->bst, _sc->bsh, _reg)
31 #define	WRITE4(_sc, _reg, _val)	\  argument
32 	bus_space_write_4(_sc->bst, _sc->bsh, _reg, _val)
33 #define	READ2(_sc, _reg)	\  argument
34 	bus_space_read_2(_sc->bst, _sc->bsh, _reg)
35 #define	WRITE2(_sc, _reg, _val)	\  argument
36 	bus_space_write_2(_sc->bst, _sc->bsh, _reg, _val)
37 #define	READ1(_sc, _reg)	\  argument
38 	bus_space_read_1(_sc->bst, _sc->bsh, _reg)
39 #define	WRITE1(_sc, _reg, _val)	\  argument
40 	bus_space_write_1(_sc->bst, _sc->bsh, _reg, _val)