bus_defs.h revision 1.6.30.1
1 /* $NetBSD: bus_defs.h,v 1.6.30.1 2020/04/08 14:07:27 martin Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Leo Weppelman. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef _AMIGAPPC_BUS_DEFS_H_ 28 #define _AMIGAPPC_BUS_DEFS_H_ 29 30 /* 31 * Memory addresses (in bus space) 32 */ 33 34 typedef uint32_t bus_addr_t; 35 typedef uint32_t bus_size_t; 36 37 /* 38 * Access methods for bus resources and address space. 39 */ 40 typedef struct bus_space_tag *bus_space_tag_t; 41 typedef u_long bus_space_handle_t; 42 43 struct amigappc_bus_dma_segment; 44 struct amigappc_bus_dma_tag; 45 struct amigappc_bus_dmamap; 46 typedef struct amigappc_bus_dma_segment bus_dma_segment_t; 47 typedef struct amigappc_bus_dma_tag bus_dma_tag_t; 48 typedef struct amigappc_bus_dmamap bus_dmamap_t; 49 50 struct amigappc_bus_dma_tag { 51 int dummy; 52 }; 53 54 struct amigappc_bus_dma_segment { 55 bus_addr_t ds_addr; 56 bus_size_t ds_len; 57 }; 58 59 struct amigappc_bus_dmamap { 60 bus_size_t dm_maxsegsz; 61 bus_size_t dm_mapsize; 62 int dm_nsegs; 63 bus_dma_segment_t *dm_segs; 64 /* TBD */ 65 }; 66 67 /* unpublic, but needed by method implementors */ 68 69 /* 70 * Lazyness macros for function declarations. 71 */ 72 73 #define bsr(what, typ) \ 74 typ (what)(bus_space_handle_t, bus_addr_t) 75 76 #define bsw(what, typ) \ 77 void (what)(bus_space_handle_t, bus_addr_t, unsigned) 78 79 #define bsrm(what, typ) \ 80 void (what)(bus_space_handle_t, bus_size_t, typ *, bus_size_t) 81 82 #define bswm(what, typ) \ 83 void (what)(bus_space_handle_t, bus_size_t, const typ *, bus_size_t) 84 85 #define bssr(what, typ) \ 86 void (what)(bus_space_handle_t, bus_size_t, unsigned, bus_size_t) 87 88 #define bscr(what, typ) \ 89 void (what)(bus_space_handle_t, bus_size_t, \ 90 bus_space_handle_t, bus_size_t, bus_size_t) 91 92 /* 93 * Implementation specific structures. 94 * XXX Don't use outside of bus_space definitions! 95 * XXX maybe this should be encapsuled in a non-global .h file? 96 */ 97 98 struct bus_space_tag { 99 bus_addr_t base; 100 const struct amiga_bus_space_methods *absm; 101 }; 102 103 struct amiga_bus_space_methods { 104 105 /* map, unmap, etc */ 106 107 int (*bsm)(bus_space_tag_t, 108 bus_addr_t, bus_size_t, int, bus_space_handle_t *); 109 110 int (*bsms)(bus_space_handle_t, 111 bus_size_t, bus_size_t, bus_space_handle_t *); 112 113 void (*bsu)(bus_space_handle_t, bus_size_t); 114 115 /* placeholders for currently not implemented alloc and free */ 116 117 void *bsa; 118 void *bsf; 119 120 /* 8 bit methods */ 121 122 bsr(*bsr1, uint8_t); 123 bsw(*bsw1, uint8_t); 124 bsrm(*bsrm1, uint8_t); 125 bswm(*bswm1, uint8_t); 126 bsrm(*bsrr1, uint8_t); 127 bswm(*bswr1, uint8_t); 128 bssr(*bssr1, uint8_t); 129 bscr(*bscr1, uint8_t); 130 131 /* 16bit methods */ 132 133 bsr(*bsr2, uint16_t); 134 bsw(*bsw2, uint16_t); 135 bsr(*bsrs2, uint16_t); 136 bsw(*bsws2, uint16_t); 137 bsrm(*bsrm2, uint16_t); 138 bswm(*bswm2, uint16_t); 139 bsrm(*bsrms2, uint16_t); 140 bswm(*bswms2, uint16_t); 141 bsrm(*bsrr2, uint16_t); 142 bswm(*bswr2, uint16_t); 143 bsrm(*bsrrs2, uint16_t); 144 bswm(*bswrs2, uint16_t); 145 bssr(*bssr2, uint16_t); 146 bscr(*bscr2, uint16_t); 147 148 /* 32bit methods */ 149 150 bsr(*bsr4, uint32_t); 151 bsw(*bsw4, uint32_t); 152 bsr(*bsrs4, uint32_t); 153 bsw(*bsws4, uint32_t); 154 bsrm(*bsrm4, uint32_t); 155 bswm(*bswm4, uint32_t); 156 bsrm(*bsrms4, uint32_t); 157 bswm(*bswms4, uint32_t); 158 bsrm(*bsrr4, uint32_t); 159 bswm(*bswr4, uint32_t); 160 bsrm(*bsrrs4, uint32_t); 161 bswm(*bswrs4, uint32_t); 162 bssr(*bssr4, uint32_t); 163 bscr(*bscr4, uint32_t); 164 }; 165 166 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 167 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 168 169 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) 170 171 #define __BUS_SPACE_HAS_STREAM_METHODS 172 173 extern const struct amiga_bus_space_methods amiga_bus_stride_1; 174 extern const struct amiga_bus_space_methods amiga_bus_stride_1swap; 175 extern const struct amiga_bus_space_methods amiga_bus_stride_1swap_abs; 176 extern const struct amiga_bus_space_methods amiga_bus_stride_2; 177 extern const struct amiga_bus_space_methods amiga_bus_stride_4; 178 extern const struct amiga_bus_space_methods amiga_bus_stride_4swap; 179 extern const struct amiga_bus_space_methods amiga_bus_stride_16; 180 extern const struct amiga_bus_space_methods amiga_bus_stride_0x1000; 181 extern const struct amiga_bus_space_methods amiga_bus_stride_0x4000; 182 183 #endif /* _AMIGAPPC_BUS_DEFS_H_ */ 184
Indexes created Mon Oct 20 20:10:13 GMT 2025