251 lines
7.9 KiB
C
251 lines
7.9 KiB
C
/* $NetBSD: bus.h,v 1.16 2000/03/23 22:44:43 is Exp $ */
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/*
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* Copyright (c) 1996 Leo Weppelman. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Leo Weppelman for the
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* NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _AMIGA_BUS_H_
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#define _AMIGA_BUS_H_
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#include <sys/types.h>
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/* for public use: */
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/*
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* Memory addresses (in bus space)
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*/
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typedef u_int32_t bus_addr_t;
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typedef u_int32_t bus_size_t;
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/*
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* Access methods for bus resources and address space.
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*/
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typedef struct bus_space_tag *bus_space_tag_t;
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typedef u_long bus_space_handle_t;
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/* unpublic, but needed by method implementors */
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/*
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* Lazyness macros for function declarations.
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*/
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#define bsr(what, typ) \
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typ (what)(bus_space_handle_t, bus_addr_t)
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#define bsw(what, typ) \
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void (what)(bus_space_handle_t, bus_addr_t, unsigned)
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#define bsrm(what, typ) \
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void (what)(bus_space_handle_t, bus_size_t, typ *, bus_size_t)
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#define bswm(what, typ) \
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void (what)(bus_space_handle_t, bus_size_t, const typ *, bus_size_t)
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#define bssr(what, typ) \
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void (what)(bus_space_handle_t, bus_size_t, unsigned, bus_size_t)
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#define bscr(what, typ) \
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void (what)(bus_space_handle_t, bus_size_t, \
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bus_space_handle_t, bus_size_t, bus_size_t)
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/*
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* Implementation specific structures.
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* XXX Don't use outside of bus_space definitions!
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* XXX maybe this should be encapsuled in a non-global .h file?
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*/
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struct bus_space_tag {
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bus_addr_t base;
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const struct amiga_bus_space_methods *absm;
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};
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struct amiga_bus_space_methods {
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/* map, unmap, etc */
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int (*bsm)(bus_space_tag_t,
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bus_addr_t, bus_size_t, int, bus_space_handle_t *);
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int (*bsms)(bus_space_handle_t,
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bus_size_t, bus_size_t, bus_space_handle_t *);
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void (*bsu)(bus_space_handle_t, bus_size_t);
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/* placeholders for currently not implemented alloc and free */
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void *bsa;
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void *bsf;
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/* 8 bit methods */
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bsr(*bsr1, u_int8_t);
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bsw(*bsw1, u_int8_t);
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bsrm(*bsrm1, u_int8_t);
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bswm(*bswm1, u_int8_t);
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bsrm(*bsrr1, u_int8_t);
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bswm(*bswr1, u_int8_t);
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bssr(*bssr1, u_int8_t);
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bscr(*bscr1, u_int8_t);
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/* 16bit methods */
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bsr(*bsr2, u_int16_t);
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bsw(*bsw2, u_int16_t);
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bsr(*bsrs2, u_int16_t);
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bsw(*bsws2, u_int16_t);
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bsrm(*bsrm2, u_int16_t);
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bswm(*bswm2, u_int16_t);
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bsrm(*bsrms2, u_int16_t);
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bswm(*bswms2, u_int16_t);
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bsrm(*bsrr2, u_int16_t);
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bswm(*bswr2, u_int16_t);
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bsrm(*bsrrs2, u_int16_t);
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bswm(*bswrs2, u_int16_t);
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bssr(*bssr2, u_int16_t);
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bscr(*bscr2, u_int16_t);
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/* add 32bit methods here */
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};
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/*
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* Macro definition of map, unmap, etc.
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*/
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#define bus_space_map(t, o, s, f, hp) \
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((t)->absm->bsm)((t), (o), (s), (f), (hp))
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#define bus_space_subregion(t, h, o, s, hp) \
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((t)->absm->bsms)((h), (o), (s), (hp))
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#define bus_space_unmap(t, h, s) \
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((t)->absm->bsu)((h), (s))
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/*
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* Macro definition of _2 functions as indirect method array calls
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*/
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/* 0: Helper macros */
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#define dbsdr(n, t, h, o) ((t)->absm->n)((h), (o))
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#define dbsdw(n, t, h, o, v) ((t)->absm->n)((h), (o), (v))
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#define dbsm(n, t, h, o, p, c) ((t)->absm->n)((h), (o), (p), (c))
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#define dbss(n, t, h, o, v, c) ((t)->absm->n)((h), (o), (v), (c))
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#define dbsc(n, t, h, o, v, c) ((t)->absm->n)((h), (o), (v), (c))
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/* 1: byte-wide "functions" */
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#define bus_space_read_1(t, h, o) dbsdr(bsr1, t, h, o)
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#define bus_space_write_1(t, h, o, v) dbsdw(bsw1, t, h, o, v)
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#define bus_space_read_multi_1(t, h, o, p, c) dbsm(bsrm1, t, h, o, p, c)
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#define bus_space_write_multi_1(t, h, o, p, c) dbsm(bswm1, t, h, o, p, c)
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#define bus_space_read_region_1(t, h, o, p, c) dbsm(bsrr1, t, h, o, p, c)
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#define bus_space_write_region_1(t, h, o, p, c) dbsm(bswr1, t, h, o, p, c)
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#define bus_space_set_region_1(t, h, o, v, c) dbss(bssr1, t, h, o, v, c)
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#define bus_space_copy_region_1(t, h, o, g, q, c) dbss(bscr1, t, h, o, g, q, c)
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/* 2: word-wide "functions" */
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#define bus_space_read_2(t, h, o) dbsdr(bsr2, t, h, o)
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#define bus_space_write_2(t, h, o, v) dbsdw(bsw2, t, h, o, v)
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#define bus_space_read_stream_2(t, h, o) dbsdr(bsrs2, t, h, o)
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#define bus_space_write_stream_2(t, h, o, v) dbsdw(bsws2, t, h, o, v)
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#define bus_space_read_multi_2(t, h, o, p, c) dbsm(bsrm2, t, h, o, p, c)
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#define bus_space_write_multi_2(t, h, o, p, c) dbsm(bswm2, t, h, o, p, c)
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#define bus_space_read_multi_stream_2(t, h, o, p, c) \
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dbsm(bsrms2, t, h, o, p, c)
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#define bus_space_write_multi_stream_2(t, h, o, p, c) \
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dbsm(bswms2, t, h, o, p, c)
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#define bus_space_read_region_2(t, h, o, p, c) dbsm(bsrr2, t, h, o, p, c)
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#define bus_space_write_region_2(t, h, o, p, c) dbsm(bswr2, t, h, o, p, c)
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#define bus_space_read_region_stream_2(t, h, o, p, c) \
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dbsm(bsrrs2, t, h, o, p, c)
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#define bus_space_write_region_stream_2(t, h, o, p, c) \
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dbsm(bswrs2, t, h, o, p, c)
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#define bus_space_set_region_2(t, h, o, v, c) dbss(bssr2, t, h, o, v, c)
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#define bus_space_copy_region_2(t, h, o, g, q, c) dbss(bscr2, t, h, o, g, q, c)
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/* 4: Fake 32-bit macros */
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#define bus_space_read_4(t, h, o) \
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(panic("bus_space_read_4 not implemented"), 0)
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#define bus_space_write_4(t, h, o, v) \
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panic("bus_space_write_4 not implemented")
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#define bus_space_read_multi_4(t, h, o, p, c) \
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panic("bus_space_read_multi_4 not implemented")
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#define bus_space_write_multi_4(t, h, o, p, c) \
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panic("bus_space_write_multi_4 not implemented")
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#define bus_space_read_multi_stream_4(t, h, o, p, c) \
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panic("bus_space_read_multi_stream_4 not implemented")
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#define bus_space_write_multi_stream_4(t, h, o, p, c) \
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panic("bus_space_write_multi_stream_4 not implemented")
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/*
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* Bus read/write barrier methods.
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*
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* void bus_space_barrier __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* bus_size_t len, int flags));
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*
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* Note: the 680x0 does not currently require barriers, but we must
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* provide the flags to MI code.
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*/
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#define bus_space_barrier(t, h, o, l, f) \
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((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)))
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#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
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#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
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#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
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#define __BUS_SPACE_HAS_STREAM_METHODS
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const struct amiga_bus_space_methods amiga_bus_stride_1;
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const struct amiga_bus_space_methods amiga_bus_stride_2;
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const struct amiga_bus_space_methods amiga_bus_stride_4;
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const struct amiga_bus_space_methods amiga_bus_stride_4swap;
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const struct amiga_bus_space_methods amiga_bus_stride_16;
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#endif /* _AMIGA_BUS_H_ */
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