amiga/include/bus.h

/*	$NetBSD: bus.h,v 1.3 1998/09/02 23:00:04 is Exp $	*/

/*
 * Copyright (c) 1996 Leo Weppelman.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Leo Weppelman for the
 *	NetBSD Project.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _AMIGA_BUS_H_
#define _AMIGA_BUS_H_

/*
 * Memory addresses (in bus space)
 */
typedef u_long	bus_addr_t;
typedef u_long	bus_size_t;

/*
 * Access methods for bus resources and address space.
 */
typedef struct bus_space_tag {
	bus_addr_t	base;
	u_char		stride;
} *bus_space_tag_t;

typedef u_long	bus_space_handle_t;

void	bus_space_read_multi_1 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));
void	bus_space_read_multi_2 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));
void	bus_space_read_multi_4 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));
void	bus_space_read_multi_8 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));
void	bus_space_write_multi_1 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));
void	bus_space_write_multi_2 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));
void	bus_space_write_multi_4 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));
void	bus_space_write_multi_8 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));

void	bus_space_read_region_1 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));

void	bus_space_write_region_1 __P((bus_space_tag_t, bus_space_handle_t,
				int, caddr_t, int));

#if 0
int	bus_space_map __P((bus_space_tag_t, bus_addr_t, bus_size_t,
				int, bus_space_handle_t *));
void	bus_space_unmap __P((bus_space_tag_t, bus_space_handle_t,
				bus_size_t));
#endif

#define bus_space_map(tag,off,size,cache,handle) 			\
	(*(handle) = (tag)->base + ((off)<<(tag)->stride), 0)

#define bus_space_subregion(tag, handle, offset, size, nhandlep) \
	(*(nhandlep) = (handle) + ((offset)<<(tag)->stride), 0)

#define bus_space_unmap(tag,handle,size)	(void)0

#define	bus_space_read_1(t, h, o) \
    ((void) t, (*(volatile u_int8_t *)((h) + ((o)<<(t)->stride))))

#define	bus_space_write_1(t, h, o, v) \
    ((void) t, ((void)(*(volatile u_int8_t *)((h) + ((o)<<(t)->stride)) = (v))))

extern __inline__ void
bus_space_read_multi_1(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a++, c--)
		*(u_int8_t *)a = bus_space_read_1(t, h, o);
}
#ifdef notyet
extern __inline__ void
bus_space_read_multi_2(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a += 2, c--)
		*(u_int16_t *)a = bus_space_read_2(t, h, o);
}

extern __inline__ void
bus_space_read_multi_4(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a += 4, c--)
		*(u_int32_t *)a = bus_space_read_4(t, h, o);
}

extern __inline__ void
bus_space_read_multi_8(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a += 8, c--)
		*(u_int64_t *)a = bus_space_read_8(t, h, o);
}
#endif

extern __inline__ void
bus_space_write_multi_1(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a++, c--)
		bus_space_write_1(t, h, o, *(u_int8_t *)a);
}

#ifdef notyet
extern __inline__ void
bus_space_write_multi_2(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a += 2, c--)
		bus_space_write_2(t, h, o, *(u_int16_t *)a);
}

extern __inline__ void
bus_space_write_multi_4(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a += 4, c--)
		bus_space_write_4(t, h, o, *(u_int32_t *)a);
}

extern __inline__ void
bus_space_write_multi_8(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a += 8, c--)
		bus_space_write_8(t, h, o, *(u_int64_t *)a);
}
#endif

extern __inline__ void
bus_space_read_region_1(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a++, c--)
		*(u_int8_t *)a = bus_space_read_1(t, h, o++);
}

extern __inline__ void
bus_space_write_region_1(t, h, o, a, c)
	bus_space_tag_t		t;
	bus_space_handle_t	h;
	int			o, c;
	caddr_t			a;
{
	for (; c; a++, c--)
		 bus_space_write_1(t, h, o++, *(u_int8_t *)a);
}
#endif /* _AMIGA_BUS_H_ */