filename | src/gdrom/gdrom.c |
changeset | 1097:d4807997e450 |
prev | 1074:397d77b6e346 |
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author | nkeynes |
date | Sun Jan 31 18:35:06 2010 +1000 (14 years ago) |
permissions | -rw-r--r-- |
last change | Refactor CDROM host support - Completely separate GDROM hardware (in gdrom/gdrom.c) from generic CDROM support (now in drivers/cdrom) - Add concept of 'sector sources' that can be mixed and matched to create cdrom discs (makes support of arbitrary disc types much simpler) |
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nkeynes@138 | 1 | /** |
nkeynes@561 | 2 | * $Id$ |
nkeynes@138 | 3 | * |
nkeynes@138 | 4 | * GD-Rom access functions. |
nkeynes@138 | 5 | * |
nkeynes@138 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@138 | 7 | * |
nkeynes@138 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@138 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@138 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@138 | 11 | * (at your option) any later version. |
nkeynes@138 | 12 | * |
nkeynes@138 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@138 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@138 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@138 | 16 | * GNU General Public License for more details. |
nkeynes@138 | 17 | */ |
nkeynes@138 | 18 | |
nkeynes@138 | 19 | #include <stdio.h> |
nkeynes@1097 | 20 | #include <stdlib.h> |
nkeynes@1097 | 21 | #include <string.h> |
nkeynes@237 | 22 | #include <fcntl.h> |
nkeynes@168 | 23 | #include <errno.h> |
nkeynes@1023 | 24 | #include <ctype.h> |
nkeynes@678 | 25 | #include <glib/gutils.h> |
nkeynes@1074 | 26 | #include <netinet/in.h> |
nkeynes@138 | 27 | #include "gdrom/ide.h" |
nkeynes@138 | 28 | #include "gdrom/gdrom.h" |
nkeynes@143 | 29 | #include "gdrom/packet.h" |
nkeynes@1023 | 30 | #include "bootstrap.h" |
nkeynes@1097 | 31 | #include "drivers/cdrom/cdrom.h" |
nkeynes@138 | 32 | |
nkeynes@1097 | 33 | #define GDROM_LBA_OFFSET 150 |
nkeynes@138 | 34 | |
nkeynes@678 | 35 | DEFINE_HOOK( gdrom_disc_change_hook, gdrom_disc_change_hook_t ) |
nkeynes@678 | 36 | |
nkeynes@1097 | 37 | static void gdrom_fire_disc_changed( cdrom_disc_t disc ) |
nkeynes@678 | 38 | { |
nkeynes@678 | 39 | CALL_HOOKS( gdrom_disc_change_hook, disc, disc == NULL ? NULL : disc->name ); |
nkeynes@678 | 40 | } |
nkeynes@678 | 41 | |
nkeynes@1097 | 42 | gboolean gdrom_disc_read_title( cdrom_disc_t disc, char *title, size_t titlelen ); |
nkeynes@138 | 43 | |
nkeynes@1097 | 44 | struct gdrom_drive { |
nkeynes@1097 | 45 | cdrom_disc_t disc; |
nkeynes@1097 | 46 | int boot_track; |
nkeynes@1097 | 47 | char title[129]; |
nkeynes@1097 | 48 | } gdrom_drive; |
nkeynes@1023 | 49 | |
nkeynes@1097 | 50 | void gdrom_mount_disc( cdrom_disc_t disc ) |
nkeynes@138 | 51 | { |
nkeynes@1097 | 52 | if( disc != gdrom_drive.disc ) { |
nkeynes@1097 | 53 | cdrom_disc_unref(gdrom_drive.disc); |
nkeynes@1097 | 54 | gdrom_drive.disc = disc; |
nkeynes@1097 | 55 | cdrom_disc_ref(disc); |
nkeynes@1097 | 56 | gdrom_disc_read_title( disc, gdrom_drive.title, sizeof(gdrom_drive.title) ); |
nkeynes@678 | 57 | gdrom_fire_disc_changed( disc ); |
nkeynes@678 | 58 | } |
nkeynes@138 | 59 | } |
nkeynes@138 | 60 | |
nkeynes@433 | 61 | gboolean gdrom_mount_image( const gchar *filename ) |
nkeynes@138 | 62 | { |
nkeynes@1097 | 63 | cdrom_disc_t disc = cdrom_disc_open(filename, NULL); |
nkeynes@695 | 64 | if( disc != NULL ) { |
nkeynes@678 | 65 | gdrom_mount_disc( disc ); |
nkeynes@678 | 66 | return TRUE; |
nkeynes@433 | 67 | } |
nkeynes@433 | 68 | return FALSE; |
nkeynes@138 | 69 | } |
nkeynes@138 | 70 | |
nkeynes@138 | 71 | void gdrom_unmount_disc( ) |
nkeynes@138 | 72 | { |
nkeynes@1097 | 73 | if( gdrom_drive.disc != NULL ) { |
nkeynes@1097 | 74 | cdrom_disc_unref(gdrom_drive.disc); |
nkeynes@678 | 75 | gdrom_fire_disc_changed(NULL); |
nkeynes@1097 | 76 | gdrom_drive.disc = NULL; |
nkeynes@138 | 77 | } |
nkeynes@138 | 78 | } |
nkeynes@138 | 79 | |
nkeynes@1097 | 80 | cdrom_disc_t gdrom_get_current_disc() |
nkeynes@464 | 81 | { |
nkeynes@1097 | 82 | return gdrom_drive.disc; |
nkeynes@464 | 83 | } |
nkeynes@613 | 84 | |
nkeynes@678 | 85 | const gchar *gdrom_get_current_disc_name() |
nkeynes@678 | 86 | { |
nkeynes@1097 | 87 | if( gdrom_drive.disc == NULL ) { |
nkeynes@678 | 88 | return NULL; |
nkeynes@678 | 89 | } else { |
nkeynes@1097 | 90 | return gdrom_drive.disc->name; |
nkeynes@678 | 91 | } |
nkeynes@678 | 92 | } |
nkeynes@678 | 93 | |
nkeynes@837 | 94 | const gchar *gdrom_get_current_disc_title() |
nkeynes@837 | 95 | { |
nkeynes@1097 | 96 | if( gdrom_drive.disc == NULL || gdrom_drive.title[0] == '\0' ) { |
nkeynes@837 | 97 | return NULL; |
nkeynes@837 | 98 | } else { |
nkeynes@1097 | 99 | return gdrom_drive.title; |
nkeynes@837 | 100 | } |
nkeynes@837 | 101 | } |
nkeynes@837 | 102 | |
nkeynes@1097 | 103 | #define CHECK_DISC() do { \ |
nkeynes@1097 | 104 | if( gdrom_drive.disc == NULL || gdrom_drive.disc->disc_type == CDROM_DISC_NONE ) { return CDROM_ERROR_NODISC; } \ |
nkeynes@1097 | 105 | } while(0) |
nkeynes@1097 | 106 | |
nkeynes@1097 | 107 | cdrom_error_t gdrom_check_media( ) |
nkeynes@613 | 108 | { |
nkeynes@1097 | 109 | CHECK_DISC(); |
nkeynes@1097 | 110 | return CDROM_ERROR_OK; |
nkeynes@613 | 111 | } |
nkeynes@837 | 112 | |
nkeynes@1097 | 113 | cdrom_error_t gdrom_read_toc( unsigned char *buf ) |
nkeynes@1023 | 114 | { |
nkeynes@1023 | 115 | struct gdrom_toc { |
nkeynes@1023 | 116 | uint32_t track[99]; |
nkeynes@1023 | 117 | uint32_t first, last, leadout; |
nkeynes@1023 | 118 | }; |
nkeynes@1023 | 119 | |
nkeynes@1023 | 120 | struct gdrom_toc *toc = (struct gdrom_toc *)buf; |
nkeynes@1023 | 121 | int i; |
nkeynes@1023 | 122 | |
nkeynes@1097 | 123 | CHECK_DISC(); |
nkeynes@1097 | 124 | cdrom_disc_t disc = gdrom_drive.disc; |
nkeynes@1023 | 125 | |
nkeynes@1023 | 126 | for( i=0; i<disc->track_count; i++ ) { |
nkeynes@1097 | 127 | toc->track[i] = htonl( disc->track[i].lba+GDROM_LBA_OFFSET ) | disc->track[i].flags; |
nkeynes@1023 | 128 | } |
nkeynes@1023 | 129 | toc->first = 0x0100 | disc->track[0].flags; |
nkeynes@1023 | 130 | toc->last = (disc->track_count<<8) | disc->track[i-1].flags; |
nkeynes@1097 | 131 | toc->leadout = htonl(disc->leadout+GDROM_LBA_OFFSET) | |
nkeynes@1023 | 132 | disc->track[i-1].flags; |
nkeynes@1023 | 133 | for( ;i<99; i++ ) |
nkeynes@1023 | 134 | toc->track[i] = 0xFFFFFFFF; |
nkeynes@1023 | 135 | return PKT_ERR_OK; |
nkeynes@1023 | 136 | } |
nkeynes@1023 | 137 | |
nkeynes@1097 | 138 | cdrom_error_t gdrom_read_session( int session, unsigned char *buf ) |
nkeynes@1023 | 139 | { |
nkeynes@1097 | 140 | cdrom_lba_t lba; |
nkeynes@1097 | 141 | CHECK_DISC(); |
nkeynes@1023 | 142 | |
nkeynes@1023 | 143 | buf[0] = 0x01; /* Disc status? */ |
nkeynes@1023 | 144 | buf[1] = 0; |
nkeynes@1023 | 145 | |
nkeynes@1097 | 146 | |
nkeynes@1023 | 147 | if( session == 0 ) { |
nkeynes@1097 | 148 | buf[2] = gdrom_drive.disc->session_count; |
nkeynes@1097 | 149 | lba = gdrom_drive.disc->leadout + GDROM_LBA_OFFSET; |
nkeynes@1023 | 150 | } else { |
nkeynes@1097 | 151 | cdrom_track_t track = cdrom_disc_get_session( gdrom_drive.disc, session ); |
nkeynes@1097 | 152 | if( track == NULL ) |
nkeynes@1097 | 153 | return CDROM_ERROR_BADFIELD; |
nkeynes@1097 | 154 | |
nkeynes@1097 | 155 | buf[2] = track->trackno; |
nkeynes@1097 | 156 | lba = track->lba + GDROM_LBA_OFFSET; |
nkeynes@1023 | 157 | } |
nkeynes@1097 | 158 | buf[3] = (lba >> 16) & 0xFF; |
nkeynes@1097 | 159 | buf[4] = (lba >> 8) & 0xFF; |
nkeynes@1097 | 160 | buf[5] = lba & 0xFF; |
nkeynes@1097 | 161 | return CDROM_ERROR_OK; |
nkeynes@1023 | 162 | } |
nkeynes@1023 | 163 | |
nkeynes@1097 | 164 | cdrom_error_t gdrom_read_short_status( cdrom_lba_t lba, unsigned char *buf ) |
nkeynes@1023 | 165 | { |
nkeynes@1097 | 166 | cdrom_lba_t real_lba = lba - GDROM_LBA_OFFSET; |
nkeynes@1097 | 167 | CHECK_DISC(); |
nkeynes@1023 | 168 | |
nkeynes@1097 | 169 | cdrom_track_t track = cdrom_disc_get_track_by_lba( gdrom_drive.disc, real_lba ); |
nkeynes@1097 | 170 | if( track == NULL ) { |
nkeynes@1097 | 171 | track = cdrom_disc_get_track( gdrom_drive.disc, 1 ); |
nkeynes@1097 | 172 | if( track == NULL ) |
nkeynes@1097 | 173 | return CDROM_ERROR_NODISC; |
nkeynes@1023 | 174 | lba = 150; |
nkeynes@1023 | 175 | } |
nkeynes@1097 | 176 | uint32_t offset = real_lba - track->lba; |
nkeynes@1023 | 177 | buf[0] = 0x00; |
nkeynes@1023 | 178 | buf[1] = 0x15; /* audio status ? */ |
nkeynes@1023 | 179 | buf[2] = 0x00; |
nkeynes@1023 | 180 | buf[3] = 0x0E; |
nkeynes@1023 | 181 | buf[4] = track->flags; |
nkeynes@1097 | 182 | buf[5] = track->trackno; |
nkeynes@1023 | 183 | buf[6] = 0x01; /* ?? */ |
nkeynes@1023 | 184 | buf[7] = (offset >> 16) & 0xFF; |
nkeynes@1023 | 185 | buf[8] = (offset >> 8) & 0xFF; |
nkeynes@1023 | 186 | buf[9] = offset & 0xFF; |
nkeynes@1023 | 187 | buf[10] = 0; |
nkeynes@1023 | 188 | buf[11] = (lba >> 16) & 0xFF; |
nkeynes@1023 | 189 | buf[12] = (lba >> 8) & 0xFF; |
nkeynes@1023 | 190 | buf[13] = lba & 0xFF; |
nkeynes@1023 | 191 | return PKT_ERR_OK; |
nkeynes@1023 | 192 | } |
nkeynes@1023 | 193 | |
nkeynes@1097 | 194 | int gdrom_get_drive_status( ) |
nkeynes@1023 | 195 | { |
nkeynes@1097 | 196 | if( gdrom_drive.disc == NULL ) { |
nkeynes@1097 | 197 | return CDROM_DISC_NONE; |
nkeynes@1023 | 198 | } |
nkeynes@1023 | 199 | |
nkeynes@1097 | 200 | if( cdrom_disc_check_media(gdrom_drive.disc) == CDROM_DISC_NONE ) { |
nkeynes@1097 | 201 | return CDROM_DISC_NONE; |
nkeynes@1023 | 202 | } else { |
nkeynes@1097 | 203 | return gdrom_drive.disc->disc_type | IDE_DISC_READY; |
nkeynes@1023 | 204 | } |
nkeynes@1023 | 205 | } |
nkeynes@1023 | 206 | |
nkeynes@1097 | 207 | cdrom_error_t gdrom_play_audio( cdrom_lba_t lba, cdrom_count_t count ) |
nkeynes@1097 | 208 | { |
nkeynes@1097 | 209 | CHECK_DISC(); |
nkeynes@1097 | 210 | if( gdrom_drive.disc->play_audio ) { |
nkeynes@1097 | 211 | return gdrom_drive.disc->play_audio( gdrom_drive.disc, lba - GDROM_LBA_OFFSET, count ); |
nkeynes@1097 | 212 | } |
nkeynes@1097 | 213 | return CDROM_ERROR_BADFIELD; |
nkeynes@1097 | 214 | } |
nkeynes@1097 | 215 | |
nkeynes@1097 | 216 | /* Parse CD read */ |
nkeynes@1097 | 217 | #define READ_CD_MODE(x) ((x)&0x0E) |
nkeynes@1097 | 218 | #define READ_CD_MODE_ANY 0x00 |
nkeynes@1097 | 219 | #define READ_CD_MODE_CDDA 0x02 |
nkeynes@1097 | 220 | #define READ_CD_MODE_1 0x04 |
nkeynes@1097 | 221 | #define READ_CD_MODE_2 0x06 |
nkeynes@1097 | 222 | #define READ_CD_MODE_2_FORM_1 0x08 |
nkeynes@1097 | 223 | #define READ_CD_MODE_2_FORM_2 0x0A |
nkeynes@1097 | 224 | |
nkeynes@1097 | 225 | #define READ_CD_CHANNELS(x) ((x)&0xF0) |
nkeynes@1097 | 226 | #define READ_CD_HEADER(x) ((x)&0x80) |
nkeynes@1097 | 227 | #define READ_CD_SUBHEAD(x) ((x)&0x40) |
nkeynes@1097 | 228 | #define READ_CD_DATA(x) ((x)&0x20) |
nkeynes@1097 | 229 | #define READ_CD_RAW(x) ((x)&0x10) |
nkeynes@1097 | 230 | |
nkeynes@1097 | 231 | |
nkeynes@1097 | 232 | cdrom_error_t gdrom_read_cd( cdrom_lba_t lba, cdrom_count_t count, |
nkeynes@1097 | 233 | unsigned mode, unsigned char *buf, size_t *length ) |
nkeynes@1097 | 234 | { |
nkeynes@1097 | 235 | cdrom_lba_t real_lba = lba - 150; |
nkeynes@1097 | 236 | cdrom_read_mode_t real_mode = 0; |
nkeynes@1097 | 237 | |
nkeynes@1097 | 238 | CHECK_DISC(); |
nkeynes@1097 | 239 | |
nkeynes@1097 | 240 | /* Translate GDROM read mode into standard MMC read mode */ |
nkeynes@1097 | 241 | if( READ_CD_RAW(mode) ) { |
nkeynes@1097 | 242 | real_mode = CDROM_READ_RAW; |
nkeynes@1097 | 243 | } else { |
nkeynes@1097 | 244 | if( READ_CD_HEADER(mode) ) { |
nkeynes@1097 | 245 | real_mode = CDROM_READ_HEADER|CDROM_READ_SYNC; |
nkeynes@1097 | 246 | } |
nkeynes@1097 | 247 | if( READ_CD_SUBHEAD(mode) ) { |
nkeynes@1097 | 248 | real_mode |= CDROM_READ_SUBHEADER; |
nkeynes@1097 | 249 | } |
nkeynes@1097 | 250 | if( READ_CD_DATA(mode) ) { |
nkeynes@1097 | 251 | real_mode |= CDROM_READ_DATA; |
nkeynes@1097 | 252 | } |
nkeynes@1097 | 253 | } |
nkeynes@1097 | 254 | |
nkeynes@1097 | 255 | if( READ_CD_MODE(mode) == 0x0C ) |
nkeynes@1097 | 256 | real_mode |= CDROM_READ_MODE2; |
nkeynes@1097 | 257 | else |
nkeynes@1097 | 258 | real_mode |= (READ_CD_MODE(mode)<<1); |
nkeynes@1097 | 259 | |
nkeynes@1097 | 260 | return cdrom_disc_read_sectors( gdrom_drive.disc, real_lba, count, real_mode, buf, length ); |
nkeynes@1097 | 261 | } |
nkeynes@1097 | 262 | |
nkeynes@1097 | 263 | void gdrom_run_slice( uint32_t nanosecs ) |
nkeynes@1097 | 264 | { |
nkeynes@1097 | 265 | |
nkeynes@1097 | 266 | } |
nkeynes@1097 | 267 | |
nkeynes@1097 | 268 | |
nkeynes@1097 | 269 | cdrom_track_t gdrom_disc_get_boot_track( cdrom_disc_t disc ) { |
nkeynes@1097 | 270 | int i, boot_track = -1; |
nkeynes@1097 | 271 | if( disc != NULL && disc->track_count > 0 ) { |
nkeynes@1097 | 272 | int last_session = disc->track[disc->track_count-1].sessionno; |
nkeynes@1097 | 273 | if( last_session == 1 ) |
nkeynes@1097 | 274 | return NULL; |
nkeynes@1097 | 275 | for( i=disc->track_count-1; i>=0 && disc->track[i].sessionno == last_session; i-- ) { |
nkeynes@1097 | 276 | if( disc->track[i].flags & TRACK_FLAG_DATA ) { |
nkeynes@1097 | 277 | boot_track = i; |
nkeynes@1097 | 278 | } |
nkeynes@1097 | 279 | } |
nkeynes@1097 | 280 | } |
nkeynes@1097 | 281 | return &disc->track[boot_track]; |
nkeynes@1097 | 282 | } |
nkeynes@1097 | 283 | |
nkeynes@1023 | 284 | /** |
nkeynes@1023 | 285 | * Check the disc for a useable DC bootstrap, and update the disc |
nkeynes@1097 | 286 | * with the title accordingly. Otherwise set the title to the empty string. |
nkeynes@1023 | 287 | * @return TRUE if we found a bootstrap, otherwise FALSE. |
nkeynes@1023 | 288 | */ |
nkeynes@1097 | 289 | gboolean gdrom_disc_read_title( cdrom_disc_t disc, char *title, size_t titlelen ) { |
nkeynes@1097 | 290 | cdrom_track_t boot_track = gdrom_disc_get_boot_track(disc); |
nkeynes@1097 | 291 | int i; |
nkeynes@1097 | 292 | if( boot_track != NULL ) { |
nkeynes@1097 | 293 | unsigned char boot_sector[CDROM_MAX_SECTOR_SIZE]; |
nkeynes@1097 | 294 | size_t length = sizeof(boot_sector); |
nkeynes@1097 | 295 | if( cdrom_disc_read_sectors( disc, boot_track->lba, 1, CDROM_READ_DATA|CDROM_READ_MODE2_FORM1, |
nkeynes@1097 | 296 | boot_sector, &length ) == CDROM_ERROR_OK ) { |
nkeynes@1097 | 297 | if( memcmp( boot_sector, "SEGA SEGAKATANA SEGA ENTERPRISES", 32) == 0 ) { |
nkeynes@1097 | 298 | /* Got magic */ |
nkeynes@1097 | 299 | dc_bootstrap_head_t bootstrap = (dc_bootstrap_head_t)boot_sector; |
nkeynes@1097 | 300 | for( i=128; i>0; i-- ) { |
nkeynes@1097 | 301 | if( !isspace(bootstrap->product_name[i-1]) ) |
nkeynes@1097 | 302 | break; |
nkeynes@1097 | 303 | } |
nkeynes@1097 | 304 | if( i >= titlelen ) |
nkeynes@1097 | 305 | i = (titlelen-1); |
nkeynes@1097 | 306 | memcpy( title, bootstrap->product_name, i ); |
nkeynes@1097 | 307 | title[i] = '\0'; |
nkeynes@1023 | 308 | } |
nkeynes@1097 | 309 | bootstrap_dump(boot_sector, FALSE); |
nkeynes@1097 | 310 | return TRUE; |
nkeynes@1023 | 311 | } |
nkeynes@1023 | 312 | } |
nkeynes@1097 | 313 | title[0] = '\0'; |
nkeynes@1023 | 314 | return FALSE; |
nkeynes@1023 | 315 | } |
nkeynes@1097 | 316 |
.