lxdream 0.9.1| filename | src/mmio.h |
| changeset | 1067:d3c00ffccfcd |
| prev | 975:007bf7eb944f |
| prev | 946:d41ee7994db7 |
| author | nkeynes |
| date | Thu Feb 23 15:24:47 2012 +1000 (11 years ago) |
| permissions | -rw-r--r-- |
| last change | Check for existence of glDrawBuffer (assuming that glReadBuffer will follow). Note only need to guard the common code in gl_fbo.c |
| view | annotate | diff | log | raw |
1 /**
2 * $Id$
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 lxdream_mmio_H
20 #define lxdream_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 "mem.h"
33 #define LXDREAM_PAGE_TABLE_ENTRIES 128*1024
34 #define LXDREAM_PAGE_SIZE 4096
35 #define LXDREAM_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 PORT_NOTRACE 16
44 #define UNDEFINED 0xDEADBEEF /* This has to be a value that nothing inits to */
46 struct mmio_region {
47 char *id, *desc;
48 uint32_t base;
49 struct mem_region_fn fn;
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 uint32_t num_io_rgns;
70 #define MMIO_READ( id, r ) *((int32_t *)(mmio_region_##id.mem + (r)))
71 #define MMIO_READF( id, r ) *((float *)(mmio_region_##id.mem + (r)))
72 #define MMIO_WRITE( id, r, v ) *((int32_t *)(mmio_region_##id.mem + (r))) = (v)
73 #define MMIO_ADDR( id, r) ((int32_t *)(mmio_region_##id.mem + (r)))
74 #define MMIO_REG( id, r ) ((int32_t *)(mmio_region_##id.mem + (r)))
75 #define MMIO_REGID( mid, r ) (mmio_region_##mid.index[(r)>>2] != NULL ? \
76 mmio_region_##mid.index[(r)>>2]->id : "<UNDEF>" )
77 #define MMIO_REGDESC( mid, r) (mmio_region_##mid.index[(r)>>2] != NULL ? \
78 mmio_region_##mid.index[(r)>>2]->desc : "Undefined register" )
79 #define MMIO_TRACE( mid ) mmio_region_##mid.trace_flag = 1
80 #define MMIO_NOTRACE( mid ) mmio_region_##mid.trace_flag = 0
82 #define MMIO_REGID_BYNUM( mid, r ) (io_rgn[mid]->index[(r)>>2] != NULL ? \
83 io_rgn[mid]->index[(r)>>2]->id : "<UNDEF>" )
84 #define MMIO_REGDESC_BYNUM( mid, r ) (io_rgn[mid]->index[(r)>>2] != NULL ? \
85 io_rgn[mid]->index[(r)>>2]->desc : "Undefined register" )
86 #define MMIO_NOTRACE_BYNUM( mid, r ) (io_rgn[mid]->index[(r)>>2] != NULL ? \
87 (io_rgn[mid]->index[(r)>>2]->flags & PORT_NOTRACE) : 0 )
88 #define MMIO_NAME_BYNUM( mid ) (io_rgn[mid]->id)
90 #define MMIO_REGID_IOBYNUM( io, r ) (io->index[(r)>>2] != NULL ? \
91 io->index[(r)>>2]->id : "<UNDEF>" )
92 #define MMIO_REGDESC_IOBYNUM( io, r ) (io->index[(r)>>2] != NULL ? \
93 io->index[(r)>>2]->desc : "Undefined register" )
94 #define MMIO_NOTRACE_IOBYNUM( io, r ) (io->index[(r)>>2] != NULL ? \
95 (io->index[(r)>>2]->flags & PORT_NOTRACE) : 0 )
97 #ifdef __cplusplus
98 }
99 #endif
101 #endif
103 #ifdef MMIO_IMPL
105 #ifndef MMIO_IMPL_INCLUDED
106 #define MMIO_IMPL_INCLUDED
107 #undef MMIO_REGION_BEGIN
108 #undef LONG_PORT
109 #undef WORD_PORT
110 #undef BYTE_PORT
111 #undef MMIO_REGION_END
112 #undef MMIO_REGION_LIST_BEGIN
113 #undef MMIO_REGION
114 #undef MMIO_REGION_LIST_END
115 #define MMIO_REGION_BEGIN(b,id,d) struct mmio_region mmio_region_##id = { #id, d, b, {mmio_region_##id##_read, mmio_region_##id##_write,mmio_region_##id##_read_word, mmio_region_##id##_write,mmio_region_##id##_read_byte, mmio_region_##id##_write,NULL, NULL, unmapped_prefetch, mmio_region_##id##_read_byte}, 0, 0, {
116 #define LONG_PORT( o,id,f,def,d ) { #id, d, 32, o, def, f },
117 #define WORD_PORT( o,id,f,def,d ) { #id, d, 16, o, def, f },
118 #define BYTE_PORT( o,id,f,def,d ) { #id, d, 8, o, def, f },
119 #define MMIO_REGION_END {NULL, NULL, 0, 0, 0, 0} } };
120 #define MMIO_REGION_LIST_BEGIN(id) struct mmio_region *mmio_list_##id[] = {
121 #define MMIO_REGION( id ) &mmio_region_##id,
122 #define MMIO_REGION_LIST_END NULL};
124 /* Stub defines for modules we haven't got to yet, or ones which don't
125 * actually need any direct code on read and/or write
126 */
127 #define MMIO_REGION_READ_STUBFN( id ) \
128 int32_t FASTCALL mmio_region_##id##_read( uint32_t reg ) { \
129 reg = reg & 0xFFF; \
130 int32_t val = MMIO_READ( id, reg ); \
131 WARN( "Read from unimplemented module %s (%03X => %08X) [%s: %s]",\
132 #id, reg, val, MMIO_REGID(id,reg), MMIO_REGDESC(id,reg) ); \
133 return val; \
134 }
135 #define MMIO_REGION_WRITE_STUBFN( id ) \
136 void FASTCALL mmio_region_##id##_write( uint32_t reg, uint32_t val ) { \
137 reg = reg & 0xFFF; \
138 WARN( "Write to unimplemented module %s (%03X <= %08X) [%s: %s]", \
139 #id, reg, val, MMIO_REGID(id,reg), MMIO_REGDESC(id,reg) ); \
140 MMIO_WRITE( id, reg, val ); \
141 }
142 #define MMIO_REGION_STUBFNS( id ) \
143 MMIO_REGION_READ_STUBFN( id ) \
144 MMIO_REGION_WRITE_STUBFN( id )
145 #define MMIO_REGION_READ_DEFFN( id ) \
146 int32_t FASTCALL mmio_region_##id##_read( uint32_t reg ) { \
147 return MMIO_READ( id, reg&0xFFF ); \
148 }
149 #define MMIO_REGION_WRITE_DEFFN( id ) \
150 void FASTCALL mmio_region_##id##_write( uint32_t reg, uint32_t val ) { \
151 MMIO_WRITE( id, reg&0xFFF, val ); \
152 }
153 #define MMIO_REGION_DEFFNS( id ) \
154 MMIO_REGION_READ_DEFFN( id ) \
155 MMIO_REGION_WRITE_DEFFN( id )
157 #endif
159 #else
161 #ifndef MMIO_IFACE_INCLUDED
162 #define MMIO_IFACE_INCLUDED
163 #define MMIO_REGION_BEGIN(b,id,d) \
164 extern struct mmio_region mmio_region_##id; \
165 int32_t FASTCALL mmio_region_##id##_read(uint32_t); \
166 int32_t FASTCALL mmio_region_##id##_read_word(uint32_t); \
167 int32_t FASTCALL mmio_region_##id##_read_byte(uint32_t); \
168 void FASTCALL mmio_region_##id##_write(uint32_t, uint32_t); \
169 enum mmio_region_##id##_port_t {
170 #define LONG_PORT( o,id,f,def,d ) id = o,
171 #define WORD_PORT( o,id,f,def,d ) id = o,
172 #define BYTE_PORT( o,id,f,def,d ) id = o,
173 #define MMIO_REGION_END };
174 #define MMIO_REGION_LIST_BEGIN(id) extern struct mmio_region *mmio_list_##id[];
175 #define MMIO_REGION( id )
176 #define MMIO_REGION_LIST_END
177 #endif
179 #define MMIO_REGION_WRITE_FN( id, reg, val ) \
180 void FASTCALL mmio_region_##id##_write( uint32_t reg, uint32_t val )
182 #define MMIO_REGION_READ_FN( id, reg ) \
183 int32_t FASTCALL mmio_region_##id##_read( uint32_t reg )
185 #define MMIO_REGION_READ_DEFSUBFNS( id ) \
186 int32_t FASTCALL mmio_region_##id##_read_word( uint32_t reg ) { return SIGNEXT16(mmio_region_##id##_read(reg)); } \
187 int32_t FASTCALL mmio_region_##id##_read_byte( uint32_t reg ) { return SIGNEXT8(mmio_region_##id##_read(reg)); }
190 #endif
.