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NetBSD/sys/arch/amigappc/include/bus.h

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/* $NetBSD: bus.h,v 1.1 2000/05/25 22:11:59 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_
#include <sys/types.h>
/*
* Memory addresses (in bus space)
*/
typedef u_int32_t bus_addr_t;
typedef u_int32_t bus_size_t;
/*
* Access methods for bus resources and address space.
*/
typedef struct bus_space_tag *bus_space_tag_t;
typedef u_long bus_space_handle_t;
/*
* Lazyness macros for function declarations.
*/
#define bsr(what, typ) \
typ (what)(bus_space_tag_t, bus_space_handle_t, bus_size_t)
#define bsw(what, typ) \
void (what)(bus_space_tag_t, bus_space_handle_t, bus_size_t, typ)
#define bsrm(what, typ) \
void (what)(bus_space_tag_t, bus_space_handle_t, bus_size_t, \
typ *, bus_size_t)
#define bswm(what, typ) \
void (what)(bus_space_tag_t, bus_space_handle_t, bus_size_t, \
const typ *, bus_size_t)
#define bssr(what, typ) \
void (what)(bus_space_tag_t, bus_space_handle_t, bus_size_t, \
typ, bus_size_t)
#define bscr(what, typ) \
void (what)(bus_space_tag_t, \
bus_space_handle_t, bus_size_t, \
bus_space_handle_t, bus_size_t, \
bus_size_t)
/* declarations for _1 functions */
bsrm(bus_space_read_multi_1, u_int8_t);
bswm(bus_space_write_multi_1, u_int8_t);
bsrm(bus_space_read_region_1, u_int8_t);
bswm(bus_space_write_region_1, u_int8_t);
bsrm(bus_space_read_region_stream_1, u_int8_t);
bswm(bus_space_write_region_stream_1, u_int8_t);
bssr(bus_space_set_region_1, u_int8_t);
bscr(bus_space_copy_region_1, u_int8_t);
/*
* Implementation specific structures.
* XXX Don't use outside of bus_space definitions!
* XXX maybe this should be encapsuled in a non-global .h file?
*/
struct bus_space_tag {
bus_addr_t base;
u_int8_t stride;
u_int8_t dum[3];
const struct amiga_bus_space_methods *absm;
};
struct amiga_bus_space_methods {
/* 16bit methods */
bsr(*bsr2, u_int16_t);
bsw(*bsw2, u_int16_t);
bsrm(*bsrm2, u_int16_t);
bswm(*bswm2, u_int16_t);
bsrm(*bsrr2, u_int16_t);
bswm(*bswr2, u_int16_t);
bsrm(*bsrrs2, u_int16_t);
bswm(*bswrs2, u_int16_t);
bssr(*bssr2, u_int16_t);
bscr(*bscr2, u_int16_t);
/* add 32bit methods here */
};
const struct amiga_bus_space_methods amiga_contiguous_methods;
const struct amiga_bus_space_methods amiga_interleaved_methods;
const struct amiga_bus_space_methods amiga_interleaved_wordaccess_methods;
/*
* Macro definition of map, unmap, etc.
*/
#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
/*
* Macro definition of some _1 functions:
*/
#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))))
/*
* Inline definition of other _1 functions:
*/
extern __inline__ void
bus_space_read_multi_1(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int8_t *a;
{
for (; c; a++, c--)
*a = bus_space_read_1(t, h, o);
}
extern __inline__ void
bus_space_write_multi_1(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int8_t *a;
{
for (; c; a++, c--)
bus_space_write_1(t, h, o, *a);
}
extern __inline__ void
bus_space_read_region_1(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int8_t *a;
{
for (; c; a++, c--)
*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;
bus_size_t o, c;
const u_int8_t *a;
{
for (; c; a++, c--)
bus_space_write_1(t, h, o++, *a);
}
extern __inline__ void
bus_space_set_region_1(t, h, o, v, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int8_t v;
{
while (c--)
bus_space_write_1(t, h, o++, v);
}
extern __inline__ void
bus_space_copy_region_1(t, srch, srco, dsth, dsto, c)
bus_space_tag_t t;
bus_space_handle_t srch, dsth;
bus_size_t srco, dsto, c;
{
u_int8_t v;
while (c--) {
v = bus_space_read_1(t, srch, srco++);
bus_space_write_1(t, dsth, dsto++, v);
}
}
extern __inline__ void
bus_space_read_region_stream_1(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int8_t *a;
{
for (; c; a++, c--)
*a = bus_space_read_1(t, h, o++);
}
extern __inline__ void
bus_space_write_region_stream_1(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int8_t *a;
{
for (; c; a++, c--)
bus_space_write_1(t, h, o++, *a);
}
/*
* Macro definition of _2 functions as indirect method array calls
*/
#define bus_space_read_2(t, h, o) ((t)->absm->bsr2)((t), (h), (o))
#define bus_space_write_2(t, h, o, v) ((t)->absm->bsw2)((t), (h), (o), (v))
#define bus_space_read_multi_2(t, h, o, p, c) \
((t)->absm->bsrm2)((t), (h), (o), (p), (c))
#define bus_space_write_multi_2(t, h, o, p, c) \
((t)->absm->bswm2)((t), (h), (o), (p), (c))
#define bus_space_read_region_2(t, h, o, p, c) \
((t)->absm->bsrr2)((t), (h), (o), (p), (c))
#define bus_space_write_region_2(t, h, o, p, c) \
((t)->absm->bswr2)((t), (h), (o), (p), (c))
#define bus_space_read_region_stream_2(t, h, o, p, c) \
((t)->absm->bsrrs2)((t), (h), (o), (p), (c))
#define bus_space_write_region_stream_2(t, h, o, p, c) \
((t)->absm->bswrs2)((t), (h), (o), (p), (c))
#define bus_space_set_region_2(t, h, o, v, c) \
((t)->absm->bssr2)((t), (h), (o), (v), (c))
#define bus_space_copy_region_2(t, srch, srco, dsth, dsto, c) \
((t)->absm->bscr2)((t), (srch), (srco), (dsth), (dsto), (c))
/*
* Bus read/write barrier methods.
*
* void bus_space_barrier __P((bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* bus_size_t len, int flags));
*
* Note: the 680x0 does not currently require barriers, but we must
* provide the flags to MI code.
*/
#define bus_space_barrier(t, h, o, l, f) \
((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)))
#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
#endif /* _AMIGA_BUS_H_ */
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