/* $NetBSD: bus.h,v 1.18 2002/09/27 21:08:34 jdolecek 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 /* for public use: */ /* * 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; /* unpublic, but needed by method implementors */ /* * Lazyness macros for function declarations. */ #define bsr(what, typ) \ typ (what)(bus_space_handle_t, bus_addr_t) #define bsw(what, typ) \ void (what)(bus_space_handle_t, bus_addr_t, unsigned) #define bsrm(what, typ) \ void (what)(bus_space_handle_t, bus_size_t, typ *, bus_size_t) #define bswm(what, typ) \ void (what)(bus_space_handle_t, bus_size_t, const typ *, bus_size_t) #define bssr(what, typ) \ void (what)(bus_space_handle_t, bus_size_t, unsigned, bus_size_t) #define bscr(what, typ) \ void (what)(bus_space_handle_t, bus_size_t, \ bus_space_handle_t, bus_size_t, bus_size_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; const struct amiga_bus_space_methods *absm; }; struct amiga_bus_space_methods { /* map, unmap, etc */ int (*bsm)(bus_space_tag_t, bus_addr_t, bus_size_t, int, bus_space_handle_t *); int (*bsms)(bus_space_handle_t, bus_size_t, bus_size_t, bus_space_handle_t *); void (*bsu)(bus_space_handle_t, bus_size_t); /* placeholders for currently not implemented alloc and free */ void *bsa; void *bsf; /* 8 bit methods */ bsr(*bsr1, u_int8_t); bsw(*bsw1, u_int8_t); bsrm(*bsrm1, u_int8_t); bswm(*bswm1, u_int8_t); bsrm(*bsrr1, u_int8_t); bswm(*bswr1, u_int8_t); bssr(*bssr1, u_int8_t); bscr(*bscr1, u_int8_t); /* 16bit methods */ bsr(*bsr2, u_int16_t); bsw(*bsw2, u_int16_t); bsr(*bsrs2, u_int16_t); bsw(*bsws2, u_int16_t); bsrm(*bsrm2, u_int16_t); bswm(*bswm2, u_int16_t); bsrm(*bsrms2, u_int16_t); bswm(*bswms2, 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 */ }; /* * Macro definition of map, unmap, etc. */ #define bus_space_map(t, o, s, f, hp) \ ((t)->absm->bsm)((t), (o), (s), (f), (hp)) #define bus_space_subregion(t, h, o, s, hp) \ ((t)->absm->bsms)((h), (o), (s), (hp)) #define bus_space_unmap(t, h, s) \ ((t)->absm->bsu)((h), (s)) /* * Macro definition of _2 functions as indirect method array calls */ /* 0: Helper macros */ #define dbsdr(n, t, h, o) ((t)->absm->n)((h), (o)) #define dbsdw(n, t, h, o, v) ((t)->absm->n)((h), (o), (v)) #define dbsm(n, t, h, o, p, c) ((t)->absm->n)((h), (o), (p), (c)) #define dbss(n, t, h, o, v, c) ((t)->absm->n)((h), (o), (v), (c)) #define dbsc(n, t, h, o, v, c) ((t)->absm->n)((h), (o), (v), (c)) /* 1: byte-wide "functions" */ #define bus_space_read_1(t, h, o) dbsdr(bsr1, t, h, o) #define bus_space_write_1(t, h, o, v) dbsdw(bsw1, t, h, o, v) #define bus_space_read_multi_1(t, h, o, p, c) dbsm(bsrm1, t, h, o, p, c) #define bus_space_write_multi_1(t, h, o, p, c) dbsm(bswm1, t, h, o, p, c) #define bus_space_read_region_1(t, h, o, p, c) dbsm(bsrr1, t, h, o, p, c) #define bus_space_write_region_1(t, h, o, p, c) dbsm(bswr1, t, h, o, p, c) #define bus_space_set_region_1(t, h, o, v, c) dbss(bssr1, t, h, o, v, c) #define bus_space_copy_region_1(t, h, o, g, q, c) dbss(bscr1, t, h, o, g, q, c) /* 2: word-wide "functions" */ #define bus_space_read_2(t, h, o) dbsdr(bsr2, t, h, o) #define bus_space_write_2(t, h, o, v) dbsdw(bsw2, t, h, o, v) #define bus_space_read_stream_2(t, h, o) dbsdr(bsrs2, t, h, o) #define bus_space_write_stream_2(t, h, o, v) dbsdw(bsws2, t, h, o, v) #define bus_space_read_multi_2(t, h, o, p, c) dbsm(bsrm2, t, h, o, p, c) #define bus_space_write_multi_2(t, h, o, p, c) dbsm(bswm2, t, h, o, p, c) #define bus_space_read_multi_stream_2(t, h, o, p, c) \ dbsm(bsrms2, t, h, o, p, c) #define bus_space_write_multi_stream_2(t, h, o, p, c) \ dbsm(bswms2, t, h, o, p, c) #define bus_space_read_region_2(t, h, o, p, c) dbsm(bsrr2, t, h, o, p, c) #define bus_space_write_region_2(t, h, o, p, c) dbsm(bswr2, t, h, o, p, c) #define bus_space_read_region_stream_2(t, h, o, p, c) \ dbsm(bsrrs2, t, h, o, p, c) #define bus_space_write_region_stream_2(t, h, o, p, c) \ dbsm(bswrs2, t, h, o, p, c) #define bus_space_set_region_2(t, h, o, v, c) dbss(bssr2, t, h, o, v, c) #define bus_space_copy_region_2(t, h, o, g, q, c) dbss(bscr2, t, h, o, g, q, c) /* 4: Fake 32-bit macros */ #define bus_space_read_4(t, h, o) \ (panic("bus_space_read_4 not implemented"), 0) #define bus_space_write_4(t, h, o, v) \ panic("bus_space_write_4 not implemented") #define bus_space_read_stream_4(t, h, o) \ (panic("bus_space_read_stream_4 not implemented"), 0) #define bus_space_write_stream_4(t, h, o, v) \ panic("bus_space_read_stream_4 not implemented") #define bus_space_read_multi_4(t, h, o, p, c) \ panic("bus_space_read_multi_4 not implemented") #define bus_space_write_multi_4(t, h, o, p, c) \ panic("bus_space_write_multi_4 not implemented") #define bus_space_read_multi_stream_4(t, h, o, p, c) \ panic("bus_space_read_multi_stream_4 not implemented") #define bus_space_write_multi_stream_4(t, h, o, p, c) \ panic("bus_space_write_multi_stream_4 not implemented") /* * 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) #define __BUS_SPACE_HAS_STREAM_METHODS extern const struct amiga_bus_space_methods amiga_bus_stride_1; extern const struct amiga_bus_space_methods amiga_bus_stride_2; extern const struct amiga_bus_space_methods amiga_bus_stride_4; extern const struct amiga_bus_space_methods amiga_bus_stride_4swap; extern const struct amiga_bus_space_methods amiga_bus_stride_16; #endif /* _AMIGA_BUS_H_ */