filename | src/mem.c |
changeset | 477:9a373f2ff009 |
prev | 466:a6935f46ed78 |
next | 480:d28c2992f5ee |
author | nkeynes |
date | Wed Oct 31 09:10:23 2007 +0000 (16 years ago) |
permissions | -rw-r--r-- |
last change | Add save/restore of render buffers in save states Gzip memory blocks in save states Move front-buffer management back to pvr2 Add screenshot preview when loading save states Various minor fixes and cleanups |
file | annotate | diff | log | raw |
nkeynes@10 | 1 | /** |
nkeynes@477 | 2 | * $Id: mem.c,v 1.18 2007-10-31 09:10:23 nkeynes Exp $ |
nkeynes@10 | 3 | * mem.c is responsible for creating and maintaining the overall system memory |
nkeynes@10 | 4 | * map, as visible from the SH4 processor. |
nkeynes@10 | 5 | * |
nkeynes@10 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@10 | 7 | * |
nkeynes@10 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@10 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@10 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@10 | 11 | * (at your option) any later version. |
nkeynes@10 | 12 | * |
nkeynes@10 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@10 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@10 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@10 | 16 | * GNU General Public License for more details. |
nkeynes@10 | 17 | */ |
nkeynes@35 | 18 | #define MODULE mem_module |
nkeynes@10 | 19 | |
nkeynes@10 | 20 | #include <sys/mman.h> |
nkeynes@19 | 21 | #include <sys/stat.h> |
nkeynes@10 | 22 | #include <assert.h> |
nkeynes@10 | 23 | #include <stdint.h> |
nkeynes@10 | 24 | #include <stdlib.h> |
nkeynes@10 | 25 | #include <stdio.h> |
nkeynes@10 | 26 | #include <unistd.h> |
nkeynes@10 | 27 | #include <fcntl.h> |
nkeynes@10 | 28 | #include <errno.h> |
nkeynes@10 | 29 | #include <string.h> |
nkeynes@10 | 30 | #include <zlib.h> |
nkeynes@10 | 31 | #include "dream.h" |
nkeynes@10 | 32 | #include "mem.h" |
nkeynes@10 | 33 | #include "mmio.h" |
nkeynes@10 | 34 | #include "dreamcast.h" |
nkeynes@10 | 35 | |
nkeynes@10 | 36 | char **page_map = NULL; |
nkeynes@10 | 37 | |
nkeynes@17 | 38 | int mem_load(FILE *f); |
nkeynes@17 | 39 | void mem_save(FILE *f); |
nkeynes@15 | 40 | struct dreamcast_module mem_module = |
nkeynes@23 | 41 | { "MEM", mem_init, mem_reset, NULL, NULL, NULL, mem_save, mem_load }; |
nkeynes@15 | 42 | |
nkeynes@10 | 43 | struct mem_region mem_rgn[MAX_MEM_REGIONS]; |
nkeynes@10 | 44 | struct mmio_region *io_rgn[MAX_IO_REGIONS]; |
nkeynes@10 | 45 | struct mmio_region *P4_io[4096]; |
nkeynes@10 | 46 | |
nkeynes@18 | 47 | int num_io_rgns = 0, num_mem_rgns = 0; |
nkeynes@10 | 48 | |
nkeynes@10 | 49 | void *mem_alloc_pages( int n ) |
nkeynes@10 | 50 | { |
nkeynes@10 | 51 | void *mem = mmap( NULL, n * 4096, |
nkeynes@10 | 52 | PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0 ); |
nkeynes@10 | 53 | if( mem == MAP_FAILED ) { |
nkeynes@10 | 54 | ERROR( "Memory allocation failure! (%s)", strerror(errno) ); |
nkeynes@10 | 55 | return NULL; |
nkeynes@10 | 56 | } |
nkeynes@10 | 57 | return mem; |
nkeynes@10 | 58 | } |
nkeynes@10 | 59 | |
nkeynes@10 | 60 | |
nkeynes@10 | 61 | void mem_init( void ) |
nkeynes@10 | 62 | { |
nkeynes@10 | 63 | page_map = mmap( NULL, sizeof(char *) * PAGE_TABLE_ENTRIES, |
nkeynes@10 | 64 | PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0 ); |
nkeynes@10 | 65 | if( page_map == MAP_FAILED ) { |
nkeynes@10 | 66 | ERROR( "Unable to allocate page map! (%s)", strerror(errno) ); |
nkeynes@10 | 67 | page_map = NULL; |
nkeynes@10 | 68 | return; |
nkeynes@10 | 69 | } |
nkeynes@10 | 70 | |
nkeynes@10 | 71 | memset( page_map, 0, sizeof(uint32_t) * PAGE_TABLE_ENTRIES ); |
nkeynes@10 | 72 | } |
nkeynes@10 | 73 | |
nkeynes@10 | 74 | void mem_reset( void ) |
nkeynes@10 | 75 | { |
nkeynes@10 | 76 | /* Restore all mmio registers to their initial settings */ |
nkeynes@10 | 77 | int i, j; |
nkeynes@10 | 78 | for( i=1; i<num_io_rgns; i++ ) { |
nkeynes@10 | 79 | for( j=0; io_rgn[i]->ports[j].id != NULL; j++ ) { |
nkeynes@10 | 80 | if( io_rgn[i]->ports[j].def_val != UNDEFINED && |
nkeynes@10 | 81 | io_rgn[i]->ports[j].def_val != *io_rgn[i]->ports[j].val ) { |
nkeynes@10 | 82 | io_rgn[i]->io_write( io_rgn[i]->ports[j].offset, |
nkeynes@10 | 83 | io_rgn[i]->ports[j].def_val ); |
nkeynes@10 | 84 | } |
nkeynes@10 | 85 | } |
nkeynes@10 | 86 | } |
nkeynes@10 | 87 | } |
nkeynes@10 | 88 | |
nkeynes@17 | 89 | void mem_save( FILE *f ) |
nkeynes@17 | 90 | { |
nkeynes@17 | 91 | int i; |
nkeynes@17 | 92 | uint32_t len; |
nkeynes@17 | 93 | |
nkeynes@17 | 94 | /* All memory regions */ |
nkeynes@17 | 95 | fwrite( &num_mem_rgns, sizeof(num_mem_rgns), 1, f ); |
nkeynes@17 | 96 | for( i=0; i<num_mem_rgns; i++ ) { |
nkeynes@17 | 97 | fwrite_string( mem_rgn[i].name, f ); |
nkeynes@17 | 98 | fwrite( &mem_rgn[i].base, sizeof(uint32_t), 1, f ); |
nkeynes@17 | 99 | fwrite( &mem_rgn[i].flags, sizeof(int), 1, f ); |
nkeynes@17 | 100 | fwrite( &mem_rgn[i].size, sizeof(uint32_t), 1, f ); |
nkeynes@18 | 101 | if( mem_rgn[i].flags != MEM_FLAG_ROM ) |
nkeynes@477 | 102 | fwrite_gzip( mem_rgn[i].mem, mem_rgn[i].size, 1, f ); |
nkeynes@17 | 103 | } |
nkeynes@17 | 104 | |
nkeynes@17 | 105 | /* All MMIO regions */ |
nkeynes@17 | 106 | fwrite( &num_io_rgns, sizeof(num_io_rgns), 1, f ); |
nkeynes@17 | 107 | for( i=0; i<num_io_rgns; i++ ) { |
nkeynes@17 | 108 | fwrite_string( io_rgn[i]->id, f ); |
nkeynes@17 | 109 | fwrite( &io_rgn[i]->base, sizeof( uint32_t ), 1, f ); |
nkeynes@18 | 110 | len = 4096; |
nkeynes@18 | 111 | fwrite( &len, sizeof(len), 1, f ); |
nkeynes@477 | 112 | fwrite_gzip( io_rgn[i]->mem, len, 1, f ); |
nkeynes@17 | 113 | } |
nkeynes@17 | 114 | } |
nkeynes@17 | 115 | |
nkeynes@17 | 116 | int mem_load( FILE *f ) |
nkeynes@17 | 117 | { |
nkeynes@17 | 118 | char tmp[64]; |
nkeynes@17 | 119 | uint32_t len; |
nkeynes@18 | 120 | uint32_t base, size; |
nkeynes@18 | 121 | int flags; |
nkeynes@17 | 122 | int i; |
nkeynes@17 | 123 | |
nkeynes@17 | 124 | /* All memory regions */ |
nkeynes@18 | 125 | fread( &len, sizeof(len), 1, f ); |
nkeynes@18 | 126 | if( len != num_mem_rgns ) |
nkeynes@18 | 127 | return -1; |
nkeynes@18 | 128 | for( i=0; i<len; i++ ) { |
nkeynes@18 | 129 | fread_string( tmp, sizeof(tmp), f ); |
nkeynes@18 | 130 | fread( &base, sizeof(base), 1, f ); |
nkeynes@18 | 131 | fread( &flags, sizeof(flags), 1, f ); |
nkeynes@18 | 132 | fread( &size, sizeof(size), 1, f ); |
nkeynes@18 | 133 | if( strcmp( mem_rgn[i].name, tmp ) != 0 || |
nkeynes@18 | 134 | base != mem_rgn[i].base || |
nkeynes@18 | 135 | flags != mem_rgn[i].flags || |
nkeynes@18 | 136 | size != mem_rgn[i].size ) { |
nkeynes@18 | 137 | ERROR( "Bad memory region %d %s", i, tmp ); |
nkeynes@18 | 138 | return -1; |
nkeynes@18 | 139 | } |
nkeynes@18 | 140 | if( flags != MEM_FLAG_ROM ) |
nkeynes@477 | 141 | fread_gzip( mem_rgn[i].mem, size, 1, f ); |
nkeynes@18 | 142 | } |
nkeynes@18 | 143 | |
nkeynes@18 | 144 | /* All MMIO regions */ |
nkeynes@18 | 145 | fread( &len, sizeof(len), 1, f ); |
nkeynes@18 | 146 | if( len != num_io_rgns ) |
nkeynes@18 | 147 | return -1; |
nkeynes@18 | 148 | for( i=0; i<len; i++ ) { |
nkeynes@18 | 149 | fread_string( tmp, sizeof(tmp), f ); |
nkeynes@18 | 150 | fread( &base, sizeof(base), 1, f ); |
nkeynes@18 | 151 | fread( &size, sizeof(size), 1, f ); |
nkeynes@18 | 152 | if( strcmp( io_rgn[i]->id, tmp ) != 0 || |
nkeynes@18 | 153 | base != io_rgn[i]->base || |
nkeynes@18 | 154 | size != 4096 ) { |
nkeynes@18 | 155 | ERROR( "Bad MMIO region %d %s", i, tmp ); |
nkeynes@18 | 156 | return -1; |
nkeynes@18 | 157 | } |
nkeynes@477 | 158 | fread_gzip( io_rgn[i]->mem, size, 1, f ); |
nkeynes@18 | 159 | } |
nkeynes@18 | 160 | return 0; |
nkeynes@17 | 161 | } |
nkeynes@17 | 162 | |
nkeynes@50 | 163 | int mem_save_block( const gchar *file, uint32_t start, uint32_t length ) |
nkeynes@19 | 164 | { |
nkeynes@50 | 165 | char *region; |
nkeynes@50 | 166 | int len = 4096, total = 0; |
nkeynes@50 | 167 | uint32_t addr = start; |
nkeynes@50 | 168 | FILE *f = fopen(file,"w"); |
nkeynes@19 | 169 | |
nkeynes@50 | 170 | if( f == NULL ) |
nkeynes@50 | 171 | return errno; |
nkeynes@50 | 172 | |
nkeynes@50 | 173 | while( total < length ) { |
nkeynes@50 | 174 | region = mem_get_region(addr); |
nkeynes@50 | 175 | len = 4096 - (addr & 0x0FFF); |
nkeynes@50 | 176 | if( len > (length-total) ) |
nkeynes@50 | 177 | len = (length-total); |
nkeynes@50 | 178 | if( fwrite( region, len, 1, f ) != 1 ) { |
nkeynes@50 | 179 | ERROR( "Unexpected error: %d %d", len, errno ); |
nkeynes@50 | 180 | break; |
nkeynes@50 | 181 | } |
nkeynes@50 | 182 | |
nkeynes@50 | 183 | addr += len; |
nkeynes@50 | 184 | total += len; |
nkeynes@50 | 185 | } |
nkeynes@50 | 186 | fclose( f ); |
nkeynes@50 | 187 | INFO( "Loaded %d of %d bytes to %08X", total, length, start ); |
nkeynes@50 | 188 | return 0; |
nkeynes@19 | 189 | } |
nkeynes@19 | 190 | |
nkeynes@19 | 191 | int mem_load_block( const gchar *file, uint32_t start, uint32_t length ) |
nkeynes@19 | 192 | { |
nkeynes@19 | 193 | char *region; |
nkeynes@19 | 194 | int len = 4096, total = 0; |
nkeynes@19 | 195 | uint32_t addr = start; |
nkeynes@19 | 196 | struct stat st; |
nkeynes@19 | 197 | FILE *f = fopen(file,"r"); |
nkeynes@19 | 198 | |
nkeynes@180 | 199 | if( f == NULL ) { |
nkeynes@180 | 200 | ERROR( "Unable to load file '%s': %s", file, strerror(errno) ); |
nkeynes@180 | 201 | return -1; |
nkeynes@180 | 202 | } |
nkeynes@19 | 203 | fstat( fileno(f), &st ); |
nkeynes@72 | 204 | if( length == 0 || length == -1 || length > st.st_size ) |
nkeynes@19 | 205 | length = st.st_size; |
nkeynes@19 | 206 | |
nkeynes@19 | 207 | while( total < length ) { |
nkeynes@19 | 208 | region = mem_get_region(addr); |
nkeynes@19 | 209 | len = 4096 - (addr & 0x0FFF); |
nkeynes@19 | 210 | if( len > (length-total) ) |
nkeynes@19 | 211 | len = (length-total); |
nkeynes@19 | 212 | if( fread( region, len, 1, f ) != 1 ) { |
nkeynes@19 | 213 | ERROR( "Unexpected error: %d %d", len, errno ); |
nkeynes@19 | 214 | break; |
nkeynes@19 | 215 | } |
nkeynes@19 | 216 | |
nkeynes@19 | 217 | addr += len; |
nkeynes@19 | 218 | total += len; |
nkeynes@19 | 219 | } |
nkeynes@19 | 220 | fclose( f ); |
nkeynes@19 | 221 | INFO( "Loaded %d of %d bytes to %08X", total, length, start ); |
nkeynes@19 | 222 | return 0; |
nkeynes@19 | 223 | } |
nkeynes@19 | 224 | |
nkeynes@10 | 225 | struct mem_region *mem_map_region( void *mem, uint32_t base, uint32_t size, |
nkeynes@422 | 226 | const char *name, int flags, uint32_t repeat_offset, |
nkeynes@146 | 227 | uint32_t repeat_until ) |
nkeynes@10 | 228 | { |
nkeynes@10 | 229 | int i; |
nkeynes@10 | 230 | mem_rgn[num_mem_rgns].base = base; |
nkeynes@10 | 231 | mem_rgn[num_mem_rgns].size = size; |
nkeynes@10 | 232 | mem_rgn[num_mem_rgns].flags = flags; |
nkeynes@10 | 233 | mem_rgn[num_mem_rgns].name = name; |
nkeynes@10 | 234 | mem_rgn[num_mem_rgns].mem = mem; |
nkeynes@10 | 235 | num_mem_rgns++; |
nkeynes@10 | 236 | |
nkeynes@146 | 237 | do { |
nkeynes@146 | 238 | for( i=0; i<size>>PAGE_BITS; i++ ) |
nkeynes@146 | 239 | page_map[(base>>PAGE_BITS)+i] = mem + (i<<PAGE_BITS); |
nkeynes@146 | 240 | base += repeat_offset; |
nkeynes@146 | 241 | } while( base <= repeat_until ); |
nkeynes@10 | 242 | |
nkeynes@10 | 243 | return &mem_rgn[num_mem_rgns-1]; |
nkeynes@10 | 244 | } |
nkeynes@10 | 245 | |
nkeynes@422 | 246 | void *mem_create_ram_region( uint32_t base, uint32_t size, const char *name ) |
nkeynes@10 | 247 | { |
nkeynes@146 | 248 | return mem_create_repeating_ram_region( base, size, name, size, base ); |
nkeynes@146 | 249 | } |
nkeynes@146 | 250 | |
nkeynes@422 | 251 | void *mem_create_repeating_ram_region( uint32_t base, uint32_t size, const char *name, |
nkeynes@146 | 252 | uint32_t repeat_offset, uint32_t repeat_until ) |
nkeynes@146 | 253 | { |
nkeynes@10 | 254 | char *mem; |
nkeynes@10 | 255 | |
nkeynes@10 | 256 | assert( (base&0xFFFFF000) == base ); /* must be page aligned */ |
nkeynes@10 | 257 | assert( (size&0x00000FFF) == 0 ); |
nkeynes@10 | 258 | assert( num_mem_rgns < MAX_MEM_REGIONS ); |
nkeynes@10 | 259 | assert( page_map != NULL ); |
nkeynes@10 | 260 | |
nkeynes@10 | 261 | mem = mem_alloc_pages( size>>PAGE_BITS ); |
nkeynes@10 | 262 | |
nkeynes@146 | 263 | mem_map_region( mem, base, size, name, MEM_FLAG_RAM, repeat_offset, repeat_until ); |
nkeynes@146 | 264 | |
nkeynes@10 | 265 | return mem; |
nkeynes@10 | 266 | } |
nkeynes@10 | 267 | |
nkeynes@466 | 268 | void *mem_load_rom( const gchar *file, uint32_t base, uint32_t size, uint32_t crc, |
nkeynes@466 | 269 | const gchar *region_name ) |
nkeynes@10 | 270 | { |
nkeynes@180 | 271 | char *mem; |
nkeynes@10 | 272 | int fd; |
nkeynes@10 | 273 | uint32_t calc_crc; |
nkeynes@461 | 274 | |
nkeynes@461 | 275 | mem = mem_get_region(base); |
nkeynes@461 | 276 | if( mem == NULL ) { |
nkeynes@461 | 277 | mem = mmap( NULL, size, PROT_WRITE|PROT_READ, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0 ); |
nkeynes@461 | 278 | if( mem == MAP_FAILED ) { |
nkeynes@461 | 279 | ERROR( "Unable to allocate ROM memory: %s (%s)", file, strerror(errno) ); |
nkeynes@461 | 280 | return NULL; |
nkeynes@461 | 281 | } |
nkeynes@461 | 282 | mem_map_region( mem, base, size, file, MEM_FLAG_ROM, size, base ); |
nkeynes@461 | 283 | } else { |
nkeynes@461 | 284 | mprotect( mem, size, PROT_READ|PROT_WRITE ); |
nkeynes@10 | 285 | } |
nkeynes@461 | 286 | |
nkeynes@461 | 287 | mem_load_block( file, base, size ); |
nkeynes@461 | 288 | mprotect( mem, size, PROT_READ ); |
nkeynes@10 | 289 | |
nkeynes@10 | 290 | /* CRC check */ |
nkeynes@422 | 291 | calc_crc = crc32(0L, (unsigned char *)mem, size); |
nkeynes@10 | 292 | if( calc_crc != crc ) { |
nkeynes@10 | 293 | WARN( "Bios CRC Mismatch in %s: %08X (expected %08X)", |
nkeynes@10 | 294 | file, calc_crc, crc); |
nkeynes@10 | 295 | } |
nkeynes@18 | 296 | |
nkeynes@10 | 297 | return mem; |
nkeynes@10 | 298 | } |
nkeynes@10 | 299 | |
nkeynes@422 | 300 | char *mem_get_region_by_name( const char *name ) |
nkeynes@10 | 301 | { |
nkeynes@10 | 302 | int i; |
nkeynes@10 | 303 | for( i=0; i<num_mem_rgns; i++ ) { |
nkeynes@10 | 304 | if( strcmp( mem_rgn[i].name, name ) == 0 ) |
nkeynes@10 | 305 | return mem_rgn[i].mem; |
nkeynes@10 | 306 | } |
nkeynes@10 | 307 | return NULL; |
nkeynes@10 | 308 | } |
nkeynes@10 | 309 | |
nkeynes@10 | 310 | void register_io_region( struct mmio_region *io ) |
nkeynes@10 | 311 | { |
nkeynes@10 | 312 | int i; |
nkeynes@10 | 313 | |
nkeynes@10 | 314 | assert(io); |
nkeynes@10 | 315 | io->mem = mem_alloc_pages(2); |
nkeynes@10 | 316 | io->save_mem = io->mem + PAGE_SIZE; |
nkeynes@10 | 317 | io->index = (struct mmio_port **)malloc(1024*sizeof(struct mmio_port *)); |
nkeynes@41 | 318 | io->trace_flag = 0; |
nkeynes@10 | 319 | memset( io->index, 0, 1024*sizeof(struct mmio_port *) ); |
nkeynes@10 | 320 | for( i=0; io->ports[i].id != NULL; i++ ) { |
nkeynes@10 | 321 | io->ports[i].val = (uint32_t *)(io->mem + io->ports[i].offset); |
nkeynes@10 | 322 | *io->ports[i].val = io->ports[i].def_val; |
nkeynes@10 | 323 | io->index[io->ports[i].offset>>2] = &io->ports[i]; |
nkeynes@10 | 324 | } |
nkeynes@10 | 325 | memcpy( io->save_mem, io->mem, PAGE_SIZE ); |
nkeynes@10 | 326 | if( (io->base & 0xFF000000) == 0xFF000000 ) { |
nkeynes@10 | 327 | /* P4 area (on-chip I/O channels */ |
nkeynes@10 | 328 | P4_io[(io->base&0x1FFFFFFF)>>19] = io; |
nkeynes@10 | 329 | } else { |
nkeynes@10 | 330 | page_map[io->base>>12] = (char *)num_io_rgns; |
nkeynes@10 | 331 | } |
nkeynes@10 | 332 | io_rgn[num_io_rgns] = io; |
nkeynes@10 | 333 | num_io_rgns++; |
nkeynes@10 | 334 | } |
nkeynes@10 | 335 | |
nkeynes@10 | 336 | void register_io_regions( struct mmio_region **io ) |
nkeynes@10 | 337 | { |
nkeynes@10 | 338 | while( *io ) register_io_region( *io++ ); |
nkeynes@10 | 339 | } |
nkeynes@10 | 340 | |
nkeynes@10 | 341 | int mem_has_page( uint32_t addr ) |
nkeynes@10 | 342 | { |
nkeynes@10 | 343 | char *page = page_map[ (addr & 0x1FFFFFFF) >> 12 ]; |
nkeynes@10 | 344 | return page != NULL; |
nkeynes@10 | 345 | } |
nkeynes@10 | 346 | |
nkeynes@10 | 347 | char *mem_get_page( uint32_t addr ) |
nkeynes@10 | 348 | { |
nkeynes@10 | 349 | char *page = page_map[ (addr & 0x1FFFFFFF) >> 12 ]; |
nkeynes@10 | 350 | return page; |
nkeynes@10 | 351 | } |
nkeynes@10 | 352 | |
nkeynes@10 | 353 | char *mem_get_region( uint32_t addr ) |
nkeynes@10 | 354 | { |
nkeynes@10 | 355 | char *page = page_map[ (addr & 0x1FFFFFFF) >> 12 ]; |
nkeynes@10 | 356 | if( ((uint32_t)page) < MAX_IO_REGIONS ) { /* IO Region */ |
nkeynes@10 | 357 | return NULL; |
nkeynes@10 | 358 | } else { |
nkeynes@10 | 359 | return page+(addr&0xFFF); |
nkeynes@10 | 360 | } |
nkeynes@10 | 361 | } |
nkeynes@11 | 362 | |
nkeynes@156 | 363 | struct mmio_region *mem_get_io_region( uint32_t addr ) |
nkeynes@156 | 364 | { |
nkeynes@156 | 365 | if( addr > 0xFF000000 ) { |
nkeynes@156 | 366 | return P4_io[(addr&0x00FFFFFF)>>12]; |
nkeynes@156 | 367 | } |
nkeynes@156 | 368 | char *page = page_map[(addr&0x1FFFFFFF)>>12]; |
nkeynes@156 | 369 | if( ((uint32_t)page) < MAX_IO_REGIONS ) { |
nkeynes@156 | 370 | return io_rgn[(uint32_t)page]; |
nkeynes@156 | 371 | } else { |
nkeynes@156 | 372 | return NULL; |
nkeynes@156 | 373 | } |
nkeynes@156 | 374 | } |
nkeynes@156 | 375 | |
nkeynes@156 | 376 | void mem_set_trace( uint32_t addr, int flag ) |
nkeynes@156 | 377 | { |
nkeynes@156 | 378 | struct mmio_region *region = mem_get_io_region(addr); |
nkeynes@156 | 379 | if( region != NULL ) |
nkeynes@156 | 380 | region->trace_flag = flag; |
nkeynes@156 | 381 | } |
nkeynes@156 | 382 |
.