bus.h

国产CPU－龙芯（loongson)BIOS源代码

 * described by tag/handle/offset.
 */

#define	bus_space_write_1(t, h, o, v)	do {				\
	if ((t) == I386_BUS_SPACE_IO)					\
		outb((h) + (o), (v));					\
	else								\
		((void)(*(volatile u_int8_t *)((h) + (o)) = (v)));	\
} while (0)

#define	bus_space_write_2(t, h, o, v)	do {				\
	if ((t) == I386_BUS_SPACE_IO)					\
		outw((h) + (o), (v));					\
	else								\
		((void)(*(volatile u_int16_t *)((h) + (o)) = (v)));	\
} while (0)

#define	bus_space_write_4(t, h, o, v)	do {				\
	if ((t) == I386_BUS_SPACE_IO)					\
		outl((h) + (o), (v));					\
	else								\
		((void)(*(volatile u_int32_t *)((h) + (o)) = (v)));	\
} while (0)

#if 0	/* Cause a link error for bus_space_write_8 */
#define	bus_space_write_8	!!! bus_space_write_8 not implemented !!!
#endif

/*
 *	void bus_space_write_multi_N(bus_space_tag_t tag,
 *	    bus_space_handle_t bsh, bus_size_t offset,
 *	    const u_intN_t *addr, size_t count);
 *
 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
 * provided to bus space described by tag/handle/offset.
 */

#define	bus_space_write_multi_1(t, h, o, a, cnt) do {			\
	if ((t) == I386_BUS_SPACE_IO) {					\
		outsb((h) + (o), (a), (cnt));				\
	} else {const void *_addr=(a); int _cnt=(cnt);			\
		__asm __volatile("					\
			cld					;	\
		1:	lodsb					;	\
			movb %%al,(%2)				;	\
			loop 1b"				:	\
		    "+S" (_addr), "+c" (_cnt) : "r" ((h) + (o))	:	\
		    "%eax", "memory", "cc");				\
	}								\
} while (0)

#define bus_space_write_multi_2(t, h, o, a, cnt) do {			\
	if ((t) == I386_BUS_SPACE_IO) {					\
		outsw((h) + (o), (a), (cnt));				\
	} else {const void *_addr=(a); int _cnt=(cnt);			\
		__asm __volatile("					\
			cld					;	\
		1:	lodsw					;	\
			movw %%ax,(%2)				;	\
			loop 1b"				:	\
		    "+S" (_addr), "+c" (_cnt) : "r" ((h) + (o))	:	\
		    "%eax", "memory", "cc");				\
	}								\
} while (0)

#define bus_space_write_multi_4(t, h, o, a, cnt) do {			\
	if ((t) == I386_BUS_SPACE_IO) {					\
		outsl((h) + (o), (a), (cnt));				\
	} else {const void *_addr=(a); int _cnt=(cnt);			\
		__asm __volatile("					\
			cld					;	\
		1:	lodsl					;	\
			movl %%eax,(%2)				;	\
			loop 1b"				:	\
		    "+S" (_addr), "+c" (_cnt) : "r" ((h) + (o))	:	\
		    "%eax", "memory", "cc");				\
	}								\
} while (0)

#if 0	/* Cause a link error for bus_space_write_multi_8 */
#define	bus_space_write_multi_8(t, h, o, a, c)				\
			!!! bus_space_write_multi_8 unimplemented !!!
#endif

/*
 *	void bus_space_write_raw_multi_N(bus_space_tag_t tag,
 *	    bus_space_handle_t bsh, bus_size_t offset,
 *	    const u_int8_t *addr, size_t count);
 *
 * Write `count' bytes in 2, 4 or 8 byte wide quantities from the buffer
 * provided to bus space described by tag/handle/offset.  The buffer
 * must have proper alignment for the N byte wide entities.  Furthermore
 * possible byte-swapping should be done by these functions.
 */

#define	bus_space_write_raw_multi_2(t, h, o, a, c) \
    bus_space_write_multi_2((t), (h), (o), (const u_int16_t *)(a), (c) >> 1)
#define	bus_space_write_raw_multi_4(t, h, o, a, c) \
    bus_space_write_multi_4((t), (h), (o), (const u_int32_t *)(a), (c) >> 2)

#if 0	/* Cause a link error for bus_space_write_raw_multi_8 */
#define	bus_space_write_raw_multi_8 \
    !!! bus_space_write_raw_multi_8 unimplemented !!!
#endif

/*
 *	void bus_space_write_region_N(bus_space_tag_t tag,
 *	    bus_space_handle_t bsh, bus_size_t offset,
 *	    const u_intN_t *addr, size_t count);
 *
 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
 * to bus space described by tag/handle starting at `offset'.
 */

#define	bus_space_write_region_1(t, h, o, a, cnt) do {			\
	int _port = (h)+(o); const void *_addr=(a); int _cnt=(cnt);	\
	if ((t) == I386_BUS_SPACE_IO) {					\
		__asm __volatile("					\
			cld					;	\
		1:	lodsb					;	\
			outb %%al,%w0				;	\
			incl %0					;	\
			loop 1b"				:	\
		    "+d" (_port), "+S" (_addr), "+c" (_cnt)	::	\
		    "%eax", "memory", "cc");				\
	} else								\
		i386_space_copy(_addr, _port, 1, _cnt);			\
} while (0)

#define	bus_space_write_region_2(t, h, o, a, cnt) do {			\
	int _port = (h)+(o); const void *_addr=(a); int _cnt=(cnt);	\
	if ((t) == I386_BUS_SPACE_IO) {					\
		__asm __volatile("					\
			cld					;	\
		1:	lodsw					;	\
			outw %%ax,%w0				;	\
			addl $2,%0				;	\
			loop 1b"				:	\
		    "+d" (_port), "+S" (_addr), "+c" (_cnt)	::	\
		    "%eax", "memory", "cc");				\
	} else								\
		i386_space_copy(_addr, _port, 2, _cnt);			\
} while (0)

#define	bus_space_write_region_4(t, h, o, a, cnt) do {			\
	int _port = (h)+(o); const void *_addr=(a); int _cnt=(cnt);	\
	if ((t) == I386_BUS_SPACE_IO) {					\
		__asm __volatile("					\
			cld					;	\
		1:	lodsl					;	\
			outl %%eax,%w0				;	\
			addl $4,%0				;	\
			loop 1b"				:	\
		    "+d" (_port), "+S" (_addr), "+c" (_cnt)	::	\
		    "%eax", "memory", "cc");				\
	} else								\
		i386_space_copy(_addr, _port, 4, _cnt);			\
} while (0)

#if 0	/* Cause a link error for bus_space_write_region_8 */
#define	bus_space_write_region_8					\
			!!! bus_space_write_region_8 unimplemented !!!
#endif

/*
 *	void bus_space_write_raw_region_N(bus_space_tag_t tag,
 *	    bus_space_handle_t bsh, bus_size_t offset,
 *	    const u_int8_t *addr, size_t count);
 *
 * Write `count' bytes in 2, 4 or 8 byte wide quantities to bus space
 * described by tag/handle and starting at `offset' from the
 * buffer provided.  The buffer must have proper alignment for the N byte
 * wide entities.  Furthermore possible byte-swapping should be done by
 * these functions.
 */

#define	bus_space_write_raw_region_2(t, h, o, a, c) \
    bus_space_write_region_2((t), (h), (o), (const u_int16_t *)(a), (c) >> 1)
#define	bus_space_write_raw_region_4(t, h, o, a, c) \
    bus_space_write_region_4((t), (h), (o), (const u_int32_t *)(a), (c) >> 2)

#if 0	/* Cause a link error for bus_space_write_raw_region_8 */
#define	bus_space_write_raw_region_8 \
    !!! bus_space_write_raw_region_8 unimplemented !!!
#endif

/*
 *	void bus_space_set_multi_N(bus_space_tag_t tag,
 *	    bus_space_handle_t bsh, bus_size_t offset,
 *	    u_intN_t val, size_t count);
 *
 * Write the 1, 2, 4, or 8 byte value `val' to bus space described
 * by tag/handle/offset `count' times.
 */

#define	bus_space_set_multi_1(t, h, o, v, cnt) do {			\
	int _cnt=(cnt);							\
	if ((t) == I386_BUS_SPACE_IO) {					\
		__asm __volatile("					\
			cld					;	\
		1:	outb %b2, %w1				;	\
			loop 1b"				:	\
		    "+c" (_cnt) : "d" ((h) + (o)), "a" ((v))	:	\
		    "cc");						\
	} else {							\
		__asm __volatile("					\
			cld					;	\
		1:	movb %b2, (%1)				;	\
			loop 1b"				:	\
		    "+c" (_cnt) : "D" ((h) + (o)), "a" ((v))	:	\
		    "cc", "memory");					\
	}								\
} while (0)

#define	bus_space_set_multi_2(t, h, o, v, cnt) do {			\
	int _cnt=(cnt);							\
	if ((t) == I386_BUS_SPACE_IO) {					\
		__asm __volatile("					\
			cld					;	\
		1:	outw %w2, %w1				;	\
			loop 1b"				:	\
		    "+c" (_cnt) : "d" ((h) + (o)), "a" ((v))	:	\
		    "cc");						\
	} else {							\
		__asm __volatile("					\
			cld					;	\
		1:	movw %w2, (%1)				;	\
			loop 1b"				:	\
		    "+c" (_cnt) : "D" ((h) + (o)), "a" ((v))	:	\
		    "cc", "memory");					\
	}								\
} while (0)

#define	bus_space_set_multi_4(t, h, o, v, cnt) do {			\
	int _cnt=(cnt);							\
	if ((t) == I386_BUS_SPACE_IO) {					\
		__asm __volatile("					\
			cld					;	\
		1:	outl %2,%w1				;	\
			loop 1b"				:	\
		    "+c" (_cnt) : "d" ((h) + (o)), "a" ((v))	:	\
		    "cc");						\
	} else {							\
		__asm __volatile("					\
			cld					;	\
		1:	movl %2,(%1)				;	\
			loop 1b"				:	\
		    "+c" (_cnt) : "D" ((h) + (o)), "a" ((v))	:	\
		    "cc", "memory");					\
	}								\
} while (0)

#if 0	/* Cause a link error for bus_space_set_multi_8 */
#define	bus_space_set_multi_8					\
			!!! bus_space_set_multi_8 unimplemented !!!
#endif

/*
 *	void bus_space_set_region_N(bus_space_tag_t tag,
 *	    bus_space_handle_t bsh, bus_size_t offset,
 *	    u_intN_t val, size_t count);
 *
 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
 * by tag/handle starting at `offset'.
 */

#define	bus_space_set_region_1(t, h, o, v, cnt) do {			\
	int _port = (h)+(o); int _cnt = (cnt);				\
	if ((t) == I386_BUS_SPACE_IO) {					\
		__asm __volatile("					\
		1:	outb %%al,%w0				;	\
			incl %0					;	\
			loop 1b"				:	\
		    "+d" (_port), "+c" (_cnt) : "a" ((v))	:	\
		    "cc");						\
	} else {							\
		__asm __volatile("					\
			cld					;	\
			repne					;	\
			stosb"					:	\
		    "+D" (_port), "+c" (_cnt) : "a" ((v))	:	\
		    "memory", "cc");					\
	}								\
} while (0)

#define	bus_space_set_region_2(t, h, o, v, cnt) do {			\
	int _port = (h)+(o); int _cnt = (cnt);				\
	if ((t) == I386_BUS_SPACE_IO) {					\
		__asm __volatile("					\
		1:	outw %%ax,%w0				;	\
			addl $2, %0				;	\
			loop 1b"				:	\
		    "+d" (_port), "+c" (_cnt) : "a" ((v))	:	\
		    "cc");						\
	} else {							\
		__asm __volatile("					\
			cld					;	\
			repne					;	\
			stosw"					:	\
		    "+D" (_port), "+c" (_cnt) : "a" ((v))	:	\
		    "memory", "cc");					\
	}								\
} while (0)

#define	bus_space_set_region_4(t, h, o, v, cnt) do {			\
	int _port = (h)+(o); int _cnt = (cnt);				\
	if ((t) == I386_BUS_SPACE_IO) {					\
		__asm __volatile("					\
		1:	outl %%eax,%w0				;	\
			addl $4, %0				;	\
			loop 1b"				:	\
		    "+d" (_port), "+c" (_cnt) : "a" ((v))	:	\
		    "cc");						\
	} else {							\
		__asm __volatile("					\
			cld					;	\
			repne					;	\