lxdream 0.9.1| filename | src/mmio.h |
| changeset | 31:495e480360d7 |
| prev | 10:c898b37506e0 |
| next | 55:96323c198da3 |
| author | nkeynes |
| date | Mon Dec 26 11:47:15 2005 +0000 (15 years ago) |
| permissions | -rw-r--r-- |
| last change | Add sh4 + arm breakpoints Hook up break button in GUI Enable ARM slice in main loop |
| view | annotate | diff | log | raw |
1 /**
2 * $Id: mmio.h,v 1.2 2005-12-25 08:24:07 nkeynes Exp $
3 *
4 * mmio.h defines a complicated batch of macros used to build up the
5 * memory-mapped I/O regions in a reasonably readable fashion.
6 *
7 * Copyright (c) 2005 Nathan Keynes.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 */
19 #ifndef dream_mmio_H
20 #define dream_mmio_H 1
22 #ifdef __cplusplus
23 extern "C" {
24 #if 0
25 }
26 #endif
27 #endif
29 #include <stdint.h>
30 #include <stdlib.h>
31 #include "sh4core.h"
33 #define PAGE_TABLE_ENTRIES 128*1024
34 #define PAGE_SIZE 4096
35 #define PAGE_BITS 12
37 #define PORT_R 1
38 #define PORT_W 2
39 #define PORT_MEM 4 /* store written value */
40 #define PORT_RW 3
41 #define PORT_MR 5
42 #define PORT_MRW 7
43 #define UNDEFINED 0xDEADBEEF /* This has to be a value that nothing inits to */
45 struct mmio_region {
46 char *id, *desc;
47 uint32_t base;
48 int32_t (*io_read)(uint32_t addr);
49 void (*io_write)(uint32_t addr, uint32_t val);
50 char *mem;
51 char *save_mem; /* Used to compare for gui updates */
52 struct mmio_port {
53 char *id, *desc;
54 int width;
55 uint32_t offset;
56 uint32_t def_val;
57 int flags;
58 uint32_t *val;
59 } ports[80];
60 struct mmio_port **index; /* reverse lookup by address */
61 int trace_flag; /* set to 1 to enable transfer traces */
62 };
64 void register_io_region( struct mmio_region *mmio );
65 void register_io_regions( struct mmio_region **mmiolist );
67 extern struct mmio_region *io_rgn[];
68 extern int num_io_rgns;
70 #define MMIO_READ( id, r ) *((int32_t *)(mmio_region_##id.mem + (r)))
71 #define MMIO_WRITE( id, r, v ) *((int32_t *)(mmio_region_##id.mem + (r))) = (v)
72 #define MMIO_REG( id, r ) ((int32_t *)(mmio_region_##id.mem + (r)))
73 #define MMIO_REGID( mid, r ) (mmio_region_##mid.index[(r)>>2] != NULL ? \
74 mmio_region_##mid.index[(r)>>2]->id : "<UNDEF>" )
75 #define MMIO_REGDESC( mid, r) (mmio_region_##mid.index[(r)>>2] != NULL ? \
76 mmio_region_##mid.index[(r)>>2]->desc : "Undefined register" )
77 #define MMIO_TRACE( mid ) mmio_region_##mid.trace_flag = 1
78 #define MMIO_NOTRACE( mid ) mmio_region_##mid.trace_flag = 0
80 #define MMIO_REGID_BYNUM( mid, r ) (io_rgn[mid]->index[(r)>>2] != NULL ? \
81 io_rgn[mid]->index[(r)>>2]->id : "<UNDEF>" )
82 #define MMIO_REGDESC_BYNUM( mid, r ) (io_rgn[mid]->index[(r)>>2] != NULL ? \
83 io_rgn[mid]->index[(r)>>2]->desc : "Undefined register" )
84 #define MMIO_NAME_BYNUM( mid ) (io_rgn[mid]->id)
86 #ifdef __cplusplus
87 }
88 #endif
90 #endif
92 #ifdef MMIO_IMPL
94 #ifndef MMIO_IMPL_INCLUDED
95 #define MMIO_IMPL_INCLUDED
96 #undef MMIO_REGION_BEGIN
97 #undef LONG_PORT
98 #undef WORD_PORT
99 #undef BYTE_PORT
100 #undef MMIO_REGION_END
101 #undef MMIO_REGION_LIST_BEGIN
102 #undef MMIO_REGION
103 #undef MMIO_REGION_LIST_END
104 #define MMIO_REGION_BEGIN(b,id,d) struct mmio_region mmio_region_##id = { #id, d, b, mmio_region_##id##_read, mmio_region_##id##_write, 0, 0, {
105 #define LONG_PORT( o,id,f,def,d ) { #id, d, 32, o, def, f },
106 #define WORD_PORT( o,id,f,def,d ) { #id, d, 16, o, def, f },
107 #define BYTE_PORT( o,id,f,def,d ) { #id, d, 8, o, def, f },
108 #define MMIO_REGION_END {NULL, NULL, 0, 0, 0, 0} } };
109 #define MMIO_REGION_LIST_BEGIN(id) struct mmio_region *mmio_list_##id[] = {
110 #define MMIO_REGION( id ) &mmio_region_##id,
111 #define MMIO_REGION_LIST_END NULL};
113 /* Stub defines for modules we haven't got to yet, or ones which don't
114 * actually need any direct code on read and/or write
115 */
116 #define MMIO_REGION_READ_STUBFN( id ) \
117 int32_t mmio_region_##id##_read( uint32_t reg ) { \
118 int32_t val = MMIO_READ( id, reg ); \
119 WARN( "Read from unimplemented module %s (%03X => %08X) [%s: %s]",\
120 #id, reg, val, MMIO_REGID(id,reg), MMIO_REGDESC(id,reg) ); \
121 return val; \
122 }
123 #define MMIO_REGION_WRITE_STUBFN( id ) \
124 void mmio_region_##id##_write( uint32_t reg, uint32_t val ) { \
125 WARN( "Write to unimplemented module %s (%03X <= %08X) [%s: %s]", \
126 #id, reg, val, MMIO_REGID(id,reg), MMIO_REGDESC(id,reg) ); \
127 MMIO_WRITE( id, reg, val ); \
128 }
129 #define MMIO_REGION_STUBFNS( id ) \
130 MMIO_REGION_READ_STUBFN( id ) \
131 MMIO_REGION_WRITE_STUBFN( id )
132 #define MMIO_REGION_READ_DEFFN( id ) \
133 int32_t mmio_region_##id##_read( uint32_t reg ) { \
134 return MMIO_READ( id, reg ); \
135 }
136 #define MMIO_REGION_WRITE_DEFFN( id ) \
137 void mmio_region_##id##_write( uint32_t reg, uint32_t val ) { \
138 MMIO_WRITE( id, reg, val ); \
139 }
140 #define MMIO_REGION_DEFFNS( id ) \
141 MMIO_REGION_READ_DEFFN( id ) \
142 MMIO_REGION_WRITE_DEFFN( id )
143 #endif
145 #define MMIO_REGION_WRITE_FN( id, reg, val ) \
146 void mmio_region_##id##_write( uint32_t reg, uint32_t val )
148 #define MMIO_REGION_READ_FN( id, reg ) \
149 int32_t mmio_region_##id##_read( uint32_t reg )
151 #else
153 #ifndef MMIO_IFACE_INCLUDED
154 #define MMIO_IFACE_INCLUDED
155 #define MMIO_REGION_BEGIN(b,id,d) \
156 extern struct mmio_region mmio_region_##id; \
157 int32_t mmio_region_##id##_read(uint32_t); \
158 void mmio_region_##id##_write(uint32_t, uint32_t); \
159 enum mmio_region_##id##_port_t {
160 #define LONG_PORT( o,id,f,def,d ) id = o,
161 #define WORD_PORT( o,id,f,def,d ) id = o,
162 #define BYTE_PORT( o,id,f,def,d ) id = o,
163 #define MMIO_REGION_END };
164 #define MMIO_REGION_LIST_BEGIN(id) extern struct mmio_region *mmio_list_##id[];
165 #define MMIO_REGION( id )
166 #define MMIO_REGION_LIST_END
167 #endif
169 #endif
.