1 /* $NetBSD: bus_defs.h,v 1.8 2020/03/06 02:31:13 christos 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 #define PRIxBUSADDR "x" 38 #define PRIxBUSSIZE "x" 39 #define PRIuBUSSIZE "u" 40 /* 41 * Access methods for bus resources and address space. 42 */ 43 typedef struct bus_space_tag *bus_space_tag_t; 44 typedef u_long bus_space_handle_t; 45 46 #define PRIxBSH "lx" 47 48 struct amigappc_bus_dma_segment; 49 struct amigappc_bus_dma_tag; 50 struct amigappc_bus_dmamap; 51 typedef struct amigappc_bus_dma_segment bus_dma_segment_t; 52 typedef struct amigappc_bus_dma_tag bus_dma_tag_t; 53 typedef struct amigappc_bus_dmamap bus_dmamap_t; 54 55 struct amigappc_bus_dma_tag { 56 int dummy; 57 }; 58 59 struct amigappc_bus_dma_segment { 60 bus_addr_t ds_addr; 61 bus_size_t ds_len; 62 }; 63 64 struct amigappc_bus_dmamap { 65 bus_size_t dm_maxsegsz; 66 bus_size_t dm_mapsize; 67 int dm_nsegs; 68 bus_dma_segment_t *dm_segs; 69 /* TBD */ 70 }; 71 72 /* unpublic, but needed by method implementors */ 73 74 /* 75 * Lazyness macros for function declarations. 76 */ 77 78 #define bsr(what, typ) \ 79 typ (what)(bus_space_handle_t, bus_addr_t) 80 81 #define bsw(what, typ) \ 82 void (what)(bus_space_handle_t, bus_addr_t, unsigned) 83 84 #define bsrm(what, typ) \ 85 void (what)(bus_space_handle_t, bus_size_t, typ *, bus_size_t) 86 87 #define bswm(what, typ) \ 88 void (what)(bus_space_handle_t, bus_size_t, const typ *, bus_size_t) 89 90 #define bssr(what, typ) \ 91 void (what)(bus_space_handle_t, bus_size_t, unsigned, bus_size_t) 92 93 #define bscr(what, typ) \ 94 void (what)(bus_space_handle_t, bus_size_t, \ 95 bus_space_handle_t, bus_size_t, bus_size_t) 96 97 /* 98 * Implementation specific structures. 99 * XXX Don't use outside of bus_space definitions! 100 * XXX maybe this should be encapsuled in a non-global .h file? 101 */ 102 103 struct bus_space_tag { 104 bus_addr_t base; 105 const struct amiga_bus_space_methods *absm; 106 }; 107 108 struct amiga_bus_space_methods { 109 110 /* map, unmap, etc */ 111 112 int (*bsm)(bus_space_tag_t, 113 bus_addr_t, bus_size_t, int, bus_space_handle_t *); 114 115 int (*bsms)(bus_space_handle_t, 116 bus_size_t, bus_size_t, bus_space_handle_t *); 117 118 void (*bsu)(bus_space_handle_t, bus_size_t); 119 120 /* placeholders for currently not implemented alloc and free */ 121 122 void *bsa; 123 void *bsf; 124 125 /* 8 bit methods */ 126 127 bsr(*bsr1, uint8_t); 128 bsw(*bsw1, uint8_t); 129 bsrm(*bsrm1, uint8_t); 130 bswm(*bswm1, uint8_t); 131 bsrm(*bsrr1, uint8_t); 132 bswm(*bswr1, uint8_t); 133 bssr(*bssr1, uint8_t); 134 bscr(*bscr1, uint8_t); 135 136 /* 16bit methods */ 137 138 bsr(*bsr2, uint16_t); 139 bsw(*bsw2, uint16_t); 140 bsr(*bsrs2, uint16_t); 141 bsw(*bsws2, uint16_t); 142 bsrm(*bsrm2, uint16_t); 143 bswm(*bswm2, uint16_t); 144 bsrm(*bsrms2, uint16_t); 145 bswm(*bswms2, uint16_t); 146 bsrm(*bsrr2, uint16_t); 147 bswm(*bswr2, uint16_t); 148 bsrm(*bsrrs2, uint16_t); 149 bswm(*bswrs2, uint16_t); 150 bssr(*bssr2, uint16_t); 151 bscr(*bscr2, uint16_t); 152 153 /* 32bit methods */ 154 155 bsr(*bsr4, uint32_t); 156 bsw(*bsw4, uint32_t); 157 bsr(*bsrs4, uint32_t); 158 bsw(*bsws4, uint32_t); 159 bsrm(*bsrm4, uint32_t); 160 bswm(*bswm4, uint32_t); 161 bsrm(*bsrms4, uint32_t); 162 bswm(*bswms4, uint32_t); 163 bsrm(*bsrr4, uint32_t); 164 bswm(*bswr4, uint32_t); 165 bsrm(*bsrrs4, uint32_t); 166 bswm(*bswrs4, uint32_t); 167 bssr(*bssr4, uint32_t); 168 bscr(*bscr4, uint32_t); 169 }; 170 171 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 172 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 173 174 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) 175 176 #define __BUS_SPACE_HAS_STREAM_METHODS 177 178 extern const struct amiga_bus_space_methods amiga_bus_stride_1; 179 extern const struct amiga_bus_space_methods amiga_bus_stride_1swap; 180 extern const struct amiga_bus_space_methods amiga_bus_stride_1swap_abs; 181 extern const struct amiga_bus_space_methods amiga_bus_stride_2; 182 extern const struct amiga_bus_space_methods amiga_bus_stride_4; 183 extern const struct amiga_bus_space_methods amiga_bus_stride_4swap; 184 extern const struct amiga_bus_space_methods amiga_bus_stride_16; 185 extern const struct amiga_bus_space_methods amiga_bus_stride_0x1000; 186 extern const struct amiga_bus_space_methods amiga_bus_stride_0x4000; 187 188 #endif /* _AMIGAPPC_BUS_DEFS_H_ */ 189