1 /* 2 * QEMU Floppy disk emulator (Intel 82078) 3 * 4 * Copyright (c) 2003, 2007 Jocelyn Mayer 5 * Copyright (c) 2008 Hervé Poussineau 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 /* 26 * The controller is used in Sun4m systems in a slightly different 27 * way. There are changes in DOR register and DMA is not available. 28 */ 29 30 #include "qemu/osdep.h" 31 #include "hw/hw.h" 32 #include "hw/block/fdc.h" 33 #include "qapi/error.h" 34 #include "qemu/error-report.h" 35 #include "qemu/timer.h" 36 #include "hw/isa/isa.h" 37 #include "hw/sysbus.h" 38 #include "hw/block/block.h" 39 #include "sysemu/block-backend.h" 40 #include "sysemu/blockdev.h" 41 #include "sysemu/sysemu.h" 42 #include "qemu/log.h" 43 #include "trace.h" 44 45 /********************************************************/ 46 /* debug Floppy devices */ 47 48 #define DEBUG_FLOPPY 0 49 50 #define FLOPPY_DPRINTF(fmt, ...) \ 51 do { \ 52 if (DEBUG_FLOPPY) { \ 53 fprintf(stderr, "FLOPPY: " fmt , ## __VA_ARGS__); \ 54 } \ 55 } while (0) 56 57 58 /********************************************************/ 59 /* qdev floppy bus */ 60 61 #define TYPE_FLOPPY_BUS "floppy-bus" 62 #define FLOPPY_BUS(obj) OBJECT_CHECK(FloppyBus, (obj), TYPE_FLOPPY_BUS) 63 64 typedef struct FDCtrl FDCtrl; 65 typedef struct FDrive FDrive; 66 static FDrive *get_drv(FDCtrl *fdctrl, int unit); 67 68 typedef struct FloppyBus { 69 BusState bus; 70 FDCtrl *fdc; 71 } FloppyBus; 72 73 static const TypeInfo floppy_bus_info = { 74 .name = TYPE_FLOPPY_BUS, 75 .parent = TYPE_BUS, 76 .instance_size = sizeof(FloppyBus), 77 }; 78 79 static void floppy_bus_create(FDCtrl *fdc, FloppyBus *bus, DeviceState *dev) 80 { 81 qbus_create_inplace(bus, sizeof(FloppyBus), TYPE_FLOPPY_BUS, dev, NULL); 82 bus->fdc = fdc; 83 } 84 85 86 /********************************************************/ 87 /* Floppy drive emulation */ 88 89 typedef enum FDriveRate { 90 FDRIVE_RATE_500K = 0x00, /* 500 Kbps */ 91 FDRIVE_RATE_300K = 0x01, /* 300 Kbps */ 92 FDRIVE_RATE_250K = 0x02, /* 250 Kbps */ 93 FDRIVE_RATE_1M = 0x03, /* 1 Mbps */ 94 } FDriveRate; 95 96 typedef enum FDriveSize { 97 FDRIVE_SIZE_UNKNOWN, 98 FDRIVE_SIZE_350, 99 FDRIVE_SIZE_525, 100 } FDriveSize; 101 102 typedef struct FDFormat { 103 FloppyDriveType drive; 104 uint8_t last_sect; 105 uint8_t max_track; 106 uint8_t max_head; 107 FDriveRate rate; 108 } FDFormat; 109 110 /* In many cases, the total sector size of a format is enough to uniquely 111 * identify it. However, there are some total sector collisions between 112 * formats of different physical size, and these are noted below by 113 * highlighting the total sector size for entries with collisions. */ 114 static const FDFormat fd_formats[] = { 115 /* First entry is default format */ 116 /* 1.44 MB 3"1/2 floppy disks */ 117 { FLOPPY_DRIVE_TYPE_144, 18, 80, 1, FDRIVE_RATE_500K, }, /* 3.5" 2880 */ 118 { FLOPPY_DRIVE_TYPE_144, 20, 80, 1, FDRIVE_RATE_500K, }, /* 3.5" 3200 */ 119 { FLOPPY_DRIVE_TYPE_144, 21, 80, 1, FDRIVE_RATE_500K, }, 120 { FLOPPY_DRIVE_TYPE_144, 21, 82, 1, FDRIVE_RATE_500K, }, 121 { FLOPPY_DRIVE_TYPE_144, 21, 83, 1, FDRIVE_RATE_500K, }, 122 { FLOPPY_DRIVE_TYPE_144, 22, 80, 1, FDRIVE_RATE_500K, }, 123 { FLOPPY_DRIVE_TYPE_144, 23, 80, 1, FDRIVE_RATE_500K, }, 124 { FLOPPY_DRIVE_TYPE_144, 24, 80, 1, FDRIVE_RATE_500K, }, 125 /* 2.88 MB 3"1/2 floppy disks */ 126 { FLOPPY_DRIVE_TYPE_288, 36, 80, 1, FDRIVE_RATE_1M, }, 127 { FLOPPY_DRIVE_TYPE_288, 39, 80, 1, FDRIVE_RATE_1M, }, 128 { FLOPPY_DRIVE_TYPE_288, 40, 80, 1, FDRIVE_RATE_1M, }, 129 { FLOPPY_DRIVE_TYPE_288, 44, 80, 1, FDRIVE_RATE_1M, }, 130 { FLOPPY_DRIVE_TYPE_288, 48, 80, 1, FDRIVE_RATE_1M, }, 131 /* 720 kB 3"1/2 floppy disks */ 132 { FLOPPY_DRIVE_TYPE_144, 9, 80, 1, FDRIVE_RATE_250K, }, /* 3.5" 1440 */ 133 { FLOPPY_DRIVE_TYPE_144, 10, 80, 1, FDRIVE_RATE_250K, }, 134 { FLOPPY_DRIVE_TYPE_144, 10, 82, 1, FDRIVE_RATE_250K, }, 135 { FLOPPY_DRIVE_TYPE_144, 10, 83, 1, FDRIVE_RATE_250K, }, 136 { FLOPPY_DRIVE_TYPE_144, 13, 80, 1, FDRIVE_RATE_250K, }, 137 { FLOPPY_DRIVE_TYPE_144, 14, 80, 1, FDRIVE_RATE_250K, }, 138 /* 1.2 MB 5"1/4 floppy disks */ 139 { FLOPPY_DRIVE_TYPE_120, 15, 80, 1, FDRIVE_RATE_500K, }, 140 { FLOPPY_DRIVE_TYPE_120, 18, 80, 1, FDRIVE_RATE_500K, }, /* 5.25" 2880 */ 141 { FLOPPY_DRIVE_TYPE_120, 18, 82, 1, FDRIVE_RATE_500K, }, 142 { FLOPPY_DRIVE_TYPE_120, 18, 83, 1, FDRIVE_RATE_500K, }, 143 { FLOPPY_DRIVE_TYPE_120, 20, 80, 1, FDRIVE_RATE_500K, }, /* 5.25" 3200 */ 144 /* 720 kB 5"1/4 floppy disks */ 145 { FLOPPY_DRIVE_TYPE_120, 9, 80, 1, FDRIVE_RATE_250K, }, /* 5.25" 1440 */ 146 { FLOPPY_DRIVE_TYPE_120, 11, 80, 1, FDRIVE_RATE_250K, }, 147 /* 360 kB 5"1/4 floppy disks */ 148 { FLOPPY_DRIVE_TYPE_120, 9, 40, 1, FDRIVE_RATE_300K, }, /* 5.25" 720 */ 149 { FLOPPY_DRIVE_TYPE_120, 9, 40, 0, FDRIVE_RATE_300K, }, 150 { FLOPPY_DRIVE_TYPE_120, 10, 41, 1, FDRIVE_RATE_300K, }, 151 { FLOPPY_DRIVE_TYPE_120, 10, 42, 1, FDRIVE_RATE_300K, }, 152 /* 320 kB 5"1/4 floppy disks */ 153 { FLOPPY_DRIVE_TYPE_120, 8, 40, 1, FDRIVE_RATE_250K, }, 154 { FLOPPY_DRIVE_TYPE_120, 8, 40, 0, FDRIVE_RATE_250K, }, 155 /* 360 kB must match 5"1/4 better than 3"1/2... */ 156 { FLOPPY_DRIVE_TYPE_144, 9, 80, 0, FDRIVE_RATE_250K, }, /* 3.5" 720 */ 157 /* end */ 158 { FLOPPY_DRIVE_TYPE_NONE, -1, -1, 0, 0, }, 159 }; 160 161 static FDriveSize drive_size(FloppyDriveType drive) 162 { 163 switch (drive) { 164 case FLOPPY_DRIVE_TYPE_120: 165 return FDRIVE_SIZE_525; 166 case FLOPPY_DRIVE_TYPE_144: 167 case FLOPPY_DRIVE_TYPE_288: 168 return FDRIVE_SIZE_350; 169 default: 170 return FDRIVE_SIZE_UNKNOWN; 171 } 172 } 173 174 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv) 175 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive)) 176 177 /* Will always be a fixed parameter for us */ 178 #define FD_SECTOR_LEN 512 179 #define FD_SECTOR_SC 2 /* Sector size code */ 180 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */ 181 182 /* Floppy disk drive emulation */ 183 typedef enum FDiskFlags { 184 FDISK_DBL_SIDES = 0x01, 185 } FDiskFlags; 186 187 struct FDrive { 188 FDCtrl *fdctrl; 189 BlockBackend *blk; 190 BlockConf *conf; 191 /* Drive status */ 192 FloppyDriveType drive; /* CMOS drive type */ 193 uint8_t perpendicular; /* 2.88 MB access mode */ 194 /* Position */ 195 uint8_t head; 196 uint8_t track; 197 uint8_t sect; 198 /* Media */ 199 FloppyDriveType disk; /* Current disk type */ 200 FDiskFlags flags; 201 uint8_t last_sect; /* Nb sector per track */ 202 uint8_t max_track; /* Nb of tracks */ 203 uint16_t bps; /* Bytes per sector */ 204 uint8_t ro; /* Is read-only */ 205 uint8_t media_changed; /* Is media changed */ 206 uint8_t media_rate; /* Data rate of medium */ 207 208 bool media_validated; /* Have we validated the media? */ 209 }; 210 211 212 static FloppyDriveType get_fallback_drive_type(FDrive *drv); 213 214 /* Hack: FD_SEEK is expected to work on empty drives. However, QEMU 215 * currently goes through some pains to keep seeks within the bounds 216 * established by last_sect and max_track. Correcting this is difficult, 217 * as refactoring FDC code tends to expose nasty bugs in the Linux kernel. 218 * 219 * For now: allow empty drives to have large bounds so we can seek around, 220 * with the understanding that when a diskette is inserted, the bounds will 221 * properly tighten to match the geometry of that inserted medium. 222 */ 223 static void fd_empty_seek_hack(FDrive *drv) 224 { 225 drv->last_sect = 0xFF; 226 drv->max_track = 0xFF; 227 } 228 229 static void fd_init(FDrive *drv) 230 { 231 /* Drive */ 232 drv->perpendicular = 0; 233 /* Disk */ 234 drv->disk = FLOPPY_DRIVE_TYPE_NONE; 235 drv->last_sect = 0; 236 drv->max_track = 0; 237 drv->ro = true; 238 drv->media_changed = 1; 239 } 240 241 #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1) 242 243 static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect, 244 uint8_t last_sect, uint8_t num_sides) 245 { 246 return (((track * num_sides) + head) * last_sect) + sect - 1; 247 } 248 249 /* Returns current position, in sectors, for given drive */ 250 static int fd_sector(FDrive *drv) 251 { 252 return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect, 253 NUM_SIDES(drv)); 254 } 255 256 /* Returns current position, in bytes, for given drive */ 257 static int fd_offset(FDrive *drv) 258 { 259 g_assert(fd_sector(drv) < INT_MAX >> BDRV_SECTOR_BITS); 260 return fd_sector(drv) << BDRV_SECTOR_BITS; 261 } 262 263 /* Seek to a new position: 264 * returns 0 if already on right track 265 * returns 1 if track changed 266 * returns 2 if track is invalid 267 * returns 3 if sector is invalid 268 * returns 4 if seek is disabled 269 */ 270 static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect, 271 int enable_seek) 272 { 273 uint32_t sector; 274 int ret; 275 276 if (track > drv->max_track || 277 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) { 278 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n", 279 head, track, sect, 1, 280 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, 281 drv->max_track, drv->last_sect); 282 return 2; 283 } 284 if (sect > drv->last_sect) { 285 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n", 286 head, track, sect, 1, 287 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, 288 drv->max_track, drv->last_sect); 289 return 3; 290 } 291 sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv)); 292 ret = 0; 293 if (sector != fd_sector(drv)) { 294 #if 0 295 if (!enable_seek) { 296 FLOPPY_DPRINTF("error: no implicit seek %d %02x %02x" 297 " (max=%d %02x %02x)\n", 298 head, track, sect, 1, drv->max_track, 299 drv->last_sect); 300 return 4; 301 } 302 #endif 303 drv->head = head; 304 if (drv->track != track) { 305 if (drv->blk != NULL && blk_is_inserted(drv->blk)) { 306 drv->media_changed = 0; 307 } 308 ret = 1; 309 } 310 drv->track = track; 311 drv->sect = sect; 312 } 313 314 if (drv->blk == NULL || !blk_is_inserted(drv->blk)) { 315 ret = 2; 316 } 317 318 return ret; 319 } 320 321 /* Set drive back to track 0 */ 322 static void fd_recalibrate(FDrive *drv) 323 { 324 FLOPPY_DPRINTF("recalibrate\n"); 325 fd_seek(drv, 0, 0, 1, 1); 326 } 327 328 /** 329 * Determine geometry based on inserted diskette. 330 * Will not operate on an empty drive. 331 * 332 * @return: 0 on success, -1 if the drive is empty. 333 */ 334 static int pick_geometry(FDrive *drv) 335 { 336 BlockBackend *blk = drv->blk; 337 const FDFormat *parse; 338 uint64_t nb_sectors, size; 339 int i; 340 int match, size_match, type_match; 341 bool magic = drv->drive == FLOPPY_DRIVE_TYPE_AUTO; 342 343 /* We can only pick a geometry if we have a diskette. */ 344 if (!drv->blk || !blk_is_inserted(drv->blk) || 345 drv->drive == FLOPPY_DRIVE_TYPE_NONE) 346 { 347 return -1; 348 } 349 350 /* We need to determine the likely geometry of the inserted medium. 351 * In order of preference, we look for: 352 * (1) The same drive type and number of sectors, 353 * (2) The same diskette size and number of sectors, 354 * (3) The same drive type. 355 * 356 * In all cases, matches that occur higher in the drive table will take 357 * precedence over matches that occur later in the table. 358 */ 359 blk_get_geometry(blk, &nb_sectors); 360 match = size_match = type_match = -1; 361 for (i = 0; ; i++) { 362 parse = &fd_formats[i]; 363 if (parse->drive == FLOPPY_DRIVE_TYPE_NONE) { 364 break; 365 } 366 size = (parse->max_head + 1) * parse->max_track * parse->last_sect; 367 if (nb_sectors == size) { 368 if (magic || parse->drive == drv->drive) { 369 /* (1) perfect match -- nb_sectors and drive type */ 370 goto out; 371 } else if (drive_size(parse->drive) == drive_size(drv->drive)) { 372 /* (2) size match -- nb_sectors and physical medium size */ 373 match = (match == -1) ? i : match; 374 } else { 375 /* This is suspicious -- Did the user misconfigure? */ 376 size_match = (size_match == -1) ? i : size_match; 377 } 378 } else if (type_match == -1) { 379 if ((parse->drive == drv->drive) || 380 (magic && (parse->drive == get_fallback_drive_type(drv)))) { 381 /* (3) type match -- nb_sectors mismatch, but matches the type 382 * specified explicitly by the user, or matches the fallback 383 * default type when using the drive autodetect mechanism */ 384 type_match = i; 385 } 386 } 387 } 388 389 /* No exact match found */ 390 if (match == -1) { 391 if (size_match != -1) { 392 parse = &fd_formats[size_match]; 393 FLOPPY_DPRINTF("User requested floppy drive type '%s', " 394 "but inserted medium appears to be a " 395 "%"PRId64" sector '%s' type\n", 396 FloppyDriveType_str(drv->drive), 397 nb_sectors, 398 FloppyDriveType_str(parse->drive)); 399 } 400 assert(type_match != -1 && "misconfigured fd_format"); 401 match = type_match; 402 } 403 parse = &(fd_formats[match]); 404 405 out: 406 if (parse->max_head == 0) { 407 drv->flags &= ~FDISK_DBL_SIDES; 408 } else { 409 drv->flags |= FDISK_DBL_SIDES; 410 } 411 drv->max_track = parse->max_track; 412 drv->last_sect = parse->last_sect; 413 drv->disk = parse->drive; 414 drv->media_rate = parse->rate; 415 return 0; 416 } 417 418 static void pick_drive_type(FDrive *drv) 419 { 420 if (drv->drive != FLOPPY_DRIVE_TYPE_AUTO) { 421 return; 422 } 423 424 if (pick_geometry(drv) == 0) { 425 drv->drive = drv->disk; 426 } else { 427 drv->drive = get_fallback_drive_type(drv); 428 } 429 430 g_assert(drv->drive != FLOPPY_DRIVE_TYPE_AUTO); 431 } 432 433 /* Revalidate a disk drive after a disk change */ 434 static void fd_revalidate(FDrive *drv) 435 { 436 int rc; 437 438 FLOPPY_DPRINTF("revalidate\n"); 439 if (drv->blk != NULL) { 440 drv->ro = blk_is_read_only(drv->blk); 441 if (!blk_is_inserted(drv->blk)) { 442 FLOPPY_DPRINTF("No disk in drive\n"); 443 drv->disk = FLOPPY_DRIVE_TYPE_NONE; 444 fd_empty_seek_hack(drv); 445 } else if (!drv->media_validated) { 446 rc = pick_geometry(drv); 447 if (rc) { 448 FLOPPY_DPRINTF("Could not validate floppy drive media"); 449 } else { 450 drv->media_validated = true; 451 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", 452 (drv->flags & FDISK_DBL_SIDES) ? 2 : 1, 453 drv->max_track, drv->last_sect, 454 drv->ro ? "ro" : "rw"); 455 } 456 } 457 } else { 458 FLOPPY_DPRINTF("No drive connected\n"); 459 drv->last_sect = 0; 460 drv->max_track = 0; 461 drv->flags &= ~FDISK_DBL_SIDES; 462 drv->drive = FLOPPY_DRIVE_TYPE_NONE; 463 drv->disk = FLOPPY_DRIVE_TYPE_NONE; 464 } 465 } 466 467 static void fd_change_cb(void *opaque, bool load, Error **errp) 468 { 469 FDrive *drive = opaque; 470 471 if (!load) { 472 blk_set_perm(drive->blk, 0, BLK_PERM_ALL, &error_abort); 473 } else { 474 if (!blkconf_apply_backend_options(drive->conf, 475 blk_is_read_only(drive->blk), false, 476 errp)) { 477 return; 478 } 479 } 480 481 drive->media_changed = 1; 482 drive->media_validated = false; 483 fd_revalidate(drive); 484 } 485 486 static const BlockDevOps fd_block_ops = { 487 .change_media_cb = fd_change_cb, 488 }; 489 490 491 #define TYPE_FLOPPY_DRIVE "floppy" 492 #define FLOPPY_DRIVE(obj) \ 493 OBJECT_CHECK(FloppyDrive, (obj), TYPE_FLOPPY_DRIVE) 494 495 typedef struct FloppyDrive { 496 DeviceState qdev; 497 uint32_t unit; 498 BlockConf conf; 499 FloppyDriveType type; 500 } FloppyDrive; 501 502 static Property floppy_drive_properties[] = { 503 DEFINE_PROP_UINT32("unit", FloppyDrive, unit, -1), 504 DEFINE_BLOCK_PROPERTIES(FloppyDrive, conf), 505 DEFINE_PROP_SIGNED("drive-type", FloppyDrive, type, 506 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 507 FloppyDriveType), 508 DEFINE_PROP_END_OF_LIST(), 509 }; 510 511 static void floppy_drive_realize(DeviceState *qdev, Error **errp) 512 { 513 FloppyDrive *dev = FLOPPY_DRIVE(qdev); 514 FloppyBus *bus = FLOPPY_BUS(qdev->parent_bus); 515 FDrive *drive; 516 int ret; 517 518 if (dev->unit == -1) { 519 for (dev->unit = 0; dev->unit < MAX_FD; dev->unit++) { 520 drive = get_drv(bus->fdc, dev->unit); 521 if (!drive->blk) { 522 break; 523 } 524 } 525 } 526 527 if (dev->unit >= MAX_FD) { 528 error_setg(errp, "Can't create floppy unit %d, bus supports " 529 "only %d units", dev->unit, MAX_FD); 530 return; 531 } 532 533 drive = get_drv(bus->fdc, dev->unit); 534 if (drive->blk) { 535 error_setg(errp, "Floppy unit %d is in use", dev->unit); 536 return; 537 } 538 539 if (!dev->conf.blk) { 540 /* Anonymous BlockBackend for an empty drive */ 541 dev->conf.blk = blk_new(0, BLK_PERM_ALL); 542 ret = blk_attach_dev(dev->conf.blk, qdev); 543 assert(ret == 0); 544 } 545 546 blkconf_blocksizes(&dev->conf); 547 if (dev->conf.logical_block_size != 512 || 548 dev->conf.physical_block_size != 512) 549 { 550 error_setg(errp, "Physical and logical block size must " 551 "be 512 for floppy"); 552 return; 553 } 554 555 /* rerror/werror aren't supported by fdc and therefore not even registered 556 * with qdev. So set the defaults manually before they are used in 557 * blkconf_apply_backend_options(). */ 558 dev->conf.rerror = BLOCKDEV_ON_ERROR_AUTO; 559 dev->conf.werror = BLOCKDEV_ON_ERROR_AUTO; 560 561 if (!blkconf_apply_backend_options(&dev->conf, 562 blk_is_read_only(dev->conf.blk), 563 false, errp)) { 564 return; 565 } 566 567 /* 'enospc' is the default for -drive, 'report' is what blk_new() gives us 568 * for empty drives. */ 569 if (blk_get_on_error(dev->conf.blk, 0) != BLOCKDEV_ON_ERROR_ENOSPC && 570 blk_get_on_error(dev->conf.blk, 0) != BLOCKDEV_ON_ERROR_REPORT) { 571 error_setg(errp, "fdc doesn't support drive option werror"); 572 return; 573 } 574 if (blk_get_on_error(dev->conf.blk, 1) != BLOCKDEV_ON_ERROR_REPORT) { 575 error_setg(errp, "fdc doesn't support drive option rerror"); 576 return; 577 } 578 579 drive->conf = &dev->conf; 580 drive->blk = dev->conf.blk; 581 drive->fdctrl = bus->fdc; 582 583 fd_init(drive); 584 blk_set_dev_ops(drive->blk, &fd_block_ops, drive); 585 586 /* Keep 'type' qdev property and FDrive->drive in sync */ 587 drive->drive = dev->type; 588 pick_drive_type(drive); 589 dev->type = drive->drive; 590 591 fd_revalidate(drive); 592 } 593 594 static void floppy_drive_class_init(ObjectClass *klass, void *data) 595 { 596 DeviceClass *k = DEVICE_CLASS(klass); 597 k->realize = floppy_drive_realize; 598 set_bit(DEVICE_CATEGORY_STORAGE, k->categories); 599 k->bus_type = TYPE_FLOPPY_BUS; 600 k->props = floppy_drive_properties; 601 k->desc = "virtual floppy drive"; 602 } 603 604 static const TypeInfo floppy_drive_info = { 605 .name = TYPE_FLOPPY_DRIVE, 606 .parent = TYPE_DEVICE, 607 .instance_size = sizeof(FloppyDrive), 608 .class_init = floppy_drive_class_init, 609 }; 610 611 /********************************************************/ 612 /* Intel 82078 floppy disk controller emulation */ 613 614 static void fdctrl_reset(FDCtrl *fdctrl, int do_irq); 615 static void fdctrl_to_command_phase(FDCtrl *fdctrl); 616 static int fdctrl_transfer_handler (void *opaque, int nchan, 617 int dma_pos, int dma_len); 618 static void fdctrl_raise_irq(FDCtrl *fdctrl); 619 static FDrive *get_cur_drv(FDCtrl *fdctrl); 620 621 static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl); 622 static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl); 623 static uint32_t fdctrl_read_dor(FDCtrl *fdctrl); 624 static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value); 625 static uint32_t fdctrl_read_tape(FDCtrl *fdctrl); 626 static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value); 627 static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl); 628 static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value); 629 static uint32_t fdctrl_read_data(FDCtrl *fdctrl); 630 static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value); 631 static uint32_t fdctrl_read_dir(FDCtrl *fdctrl); 632 static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value); 633 634 enum { 635 FD_DIR_WRITE = 0, 636 FD_DIR_READ = 1, 637 FD_DIR_SCANE = 2, 638 FD_DIR_SCANL = 3, 639 FD_DIR_SCANH = 4, 640 FD_DIR_VERIFY = 5, 641 }; 642 643 enum { 644 FD_STATE_MULTI = 0x01, /* multi track flag */ 645 FD_STATE_FORMAT = 0x02, /* format flag */ 646 }; 647 648 enum { 649 FD_REG_SRA = 0x00, 650 FD_REG_SRB = 0x01, 651 FD_REG_DOR = 0x02, 652 FD_REG_TDR = 0x03, 653 FD_REG_MSR = 0x04, 654 FD_REG_DSR = 0x04, 655 FD_REG_FIFO = 0x05, 656 FD_REG_DIR = 0x07, 657 FD_REG_CCR = 0x07, 658 }; 659 660 enum { 661 FD_CMD_READ_TRACK = 0x02, 662 FD_CMD_SPECIFY = 0x03, 663 FD_CMD_SENSE_DRIVE_STATUS = 0x04, 664 FD_CMD_WRITE = 0x05, 665 FD_CMD_READ = 0x06, 666 FD_CMD_RECALIBRATE = 0x07, 667 FD_CMD_SENSE_INTERRUPT_STATUS = 0x08, 668 FD_CMD_WRITE_DELETED = 0x09, 669 FD_CMD_READ_ID = 0x0a, 670 FD_CMD_READ_DELETED = 0x0c, 671 FD_CMD_FORMAT_TRACK = 0x0d, 672 FD_CMD_DUMPREG = 0x0e, 673 FD_CMD_SEEK = 0x0f, 674 FD_CMD_VERSION = 0x10, 675 FD_CMD_SCAN_EQUAL = 0x11, 676 FD_CMD_PERPENDICULAR_MODE = 0x12, 677 FD_CMD_CONFIGURE = 0x13, 678 FD_CMD_LOCK = 0x14, 679 FD_CMD_VERIFY = 0x16, 680 FD_CMD_POWERDOWN_MODE = 0x17, 681 FD_CMD_PART_ID = 0x18, 682 FD_CMD_SCAN_LOW_OR_EQUAL = 0x19, 683 FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d, 684 FD_CMD_SAVE = 0x2e, 685 FD_CMD_OPTION = 0x33, 686 FD_CMD_RESTORE = 0x4e, 687 FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e, 688 FD_CMD_RELATIVE_SEEK_OUT = 0x8f, 689 FD_CMD_FORMAT_AND_WRITE = 0xcd, 690 FD_CMD_RELATIVE_SEEK_IN = 0xcf, 691 }; 692 693 enum { 694 FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */ 695 FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */ 696 FD_CONFIG_POLL = 0x10, /* Poll enabled */ 697 FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */ 698 FD_CONFIG_EIS = 0x40, /* No implied seeks */ 699 }; 700 701 enum { 702 FD_SR0_DS0 = 0x01, 703 FD_SR0_DS1 = 0x02, 704 FD_SR0_HEAD = 0x04, 705 FD_SR0_EQPMT = 0x10, 706 FD_SR0_SEEK = 0x20, 707 FD_SR0_ABNTERM = 0x40, 708 FD_SR0_INVCMD = 0x80, 709 FD_SR0_RDYCHG = 0xc0, 710 }; 711 712 enum { 713 FD_SR1_MA = 0x01, /* Missing address mark */ 714 FD_SR1_NW = 0x02, /* Not writable */ 715 FD_SR1_EC = 0x80, /* End of cylinder */ 716 }; 717 718 enum { 719 FD_SR2_SNS = 0x04, /* Scan not satisfied */ 720 FD_SR2_SEH = 0x08, /* Scan equal hit */ 721 }; 722 723 enum { 724 FD_SRA_DIR = 0x01, 725 FD_SRA_nWP = 0x02, 726 FD_SRA_nINDX = 0x04, 727 FD_SRA_HDSEL = 0x08, 728 FD_SRA_nTRK0 = 0x10, 729 FD_SRA_STEP = 0x20, 730 FD_SRA_nDRV2 = 0x40, 731 FD_SRA_INTPEND = 0x80, 732 }; 733 734 enum { 735 FD_SRB_MTR0 = 0x01, 736 FD_SRB_MTR1 = 0x02, 737 FD_SRB_WGATE = 0x04, 738 FD_SRB_RDATA = 0x08, 739 FD_SRB_WDATA = 0x10, 740 FD_SRB_DR0 = 0x20, 741 }; 742 743 enum { 744 #if MAX_FD == 4 745 FD_DOR_SELMASK = 0x03, 746 #else 747 FD_DOR_SELMASK = 0x01, 748 #endif 749 FD_DOR_nRESET = 0x04, 750 FD_DOR_DMAEN = 0x08, 751 FD_DOR_MOTEN0 = 0x10, 752 FD_DOR_MOTEN1 = 0x20, 753 FD_DOR_MOTEN2 = 0x40, 754 FD_DOR_MOTEN3 = 0x80, 755 }; 756 757 enum { 758 #if MAX_FD == 4 759 FD_TDR_BOOTSEL = 0x0c, 760 #else 761 FD_TDR_BOOTSEL = 0x04, 762 #endif 763 }; 764 765 enum { 766 FD_DSR_DRATEMASK= 0x03, 767 FD_DSR_PWRDOWN = 0x40, 768 FD_DSR_SWRESET = 0x80, 769 }; 770 771 enum { 772 FD_MSR_DRV0BUSY = 0x01, 773 FD_MSR_DRV1BUSY = 0x02, 774 FD_MSR_DRV2BUSY = 0x04, 775 FD_MSR_DRV3BUSY = 0x08, 776 FD_MSR_CMDBUSY = 0x10, 777 FD_MSR_NONDMA = 0x20, 778 FD_MSR_DIO = 0x40, 779 FD_MSR_RQM = 0x80, 780 }; 781 782 enum { 783 FD_DIR_DSKCHG = 0x80, 784 }; 785 786 /* 787 * See chapter 5.0 "Controller phases" of the spec: 788 * 789 * Command phase: 790 * The host writes a command and its parameters into the FIFO. The command 791 * phase is completed when all parameters for the command have been supplied, 792 * and execution phase is entered. 793 * 794 * Execution phase: 795 * Data transfers, either DMA or non-DMA. For non-DMA transfers, the FIFO 796 * contains the payload now, otherwise it's unused. When all bytes of the 797 * required data have been transferred, the state is switched to either result 798 * phase (if the command produces status bytes) or directly back into the 799 * command phase for the next command. 800 * 801 * Result phase: 802 * The host reads out the FIFO, which contains one or more result bytes now. 803 */ 804 enum { 805 /* Only for migration: reconstruct phase from registers like qemu 2.3 */ 806 FD_PHASE_RECONSTRUCT = 0, 807 808 FD_PHASE_COMMAND = 1, 809 FD_PHASE_EXECUTION = 2, 810 FD_PHASE_RESULT = 3, 811 }; 812 813 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI) 814 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT) 815 816 struct FDCtrl { 817 MemoryRegion iomem; 818 qemu_irq irq; 819 /* Controller state */ 820 QEMUTimer *result_timer; 821 int dma_chann; 822 uint8_t phase; 823 IsaDma *dma; 824 /* Controller's identification */ 825 uint8_t version; 826 /* HW */ 827 uint8_t sra; 828 uint8_t srb; 829 uint8_t dor; 830 uint8_t dor_vmstate; /* only used as temp during vmstate */ 831 uint8_t tdr; 832 uint8_t dsr; 833 uint8_t msr; 834 uint8_t cur_drv; 835 uint8_t status0; 836 uint8_t status1; 837 uint8_t status2; 838 /* Command FIFO */ 839 uint8_t *fifo; 840 int32_t fifo_size; 841 uint32_t data_pos; 842 uint32_t data_len; 843 uint8_t data_state; 844 uint8_t data_dir; 845 uint8_t eot; /* last wanted sector */ 846 /* States kept only to be returned back */ 847 /* precompensation */ 848 uint8_t precomp_trk; 849 uint8_t config; 850 uint8_t lock; 851 /* Power down config (also with status regB access mode */ 852 uint8_t pwrd; 853 /* Floppy drives */ 854 FloppyBus bus; 855 uint8_t num_floppies; 856 FDrive drives[MAX_FD]; 857 struct { 858 BlockBackend *blk; 859 FloppyDriveType type; 860 } qdev_for_drives[MAX_FD]; 861 int reset_sensei; 862 uint32_t check_media_rate; 863 FloppyDriveType fallback; /* type=auto failure fallback */ 864 /* Timers state */ 865 uint8_t timer0; 866 uint8_t timer1; 867 PortioList portio_list; 868 }; 869 870 static FloppyDriveType get_fallback_drive_type(FDrive *drv) 871 { 872 return drv->fdctrl->fallback; 873 } 874 875 #define TYPE_SYSBUS_FDC "base-sysbus-fdc" 876 #define SYSBUS_FDC(obj) OBJECT_CHECK(FDCtrlSysBus, (obj), TYPE_SYSBUS_FDC) 877 878 typedef struct FDCtrlSysBus { 879 /*< private >*/ 880 SysBusDevice parent_obj; 881 /*< public >*/ 882 883 struct FDCtrl state; 884 } FDCtrlSysBus; 885 886 #define ISA_FDC(obj) OBJECT_CHECK(FDCtrlISABus, (obj), TYPE_ISA_FDC) 887 888 typedef struct FDCtrlISABus { 889 ISADevice parent_obj; 890 891 uint32_t iobase; 892 uint32_t irq; 893 uint32_t dma; 894 struct FDCtrl state; 895 int32_t bootindexA; 896 int32_t bootindexB; 897 } FDCtrlISABus; 898 899 static uint32_t fdctrl_read (void *opaque, uint32_t reg) 900 { 901 FDCtrl *fdctrl = opaque; 902 uint32_t retval; 903 904 reg &= 7; 905 switch (reg) { 906 case FD_REG_SRA: 907 retval = fdctrl_read_statusA(fdctrl); 908 break; 909 case FD_REG_SRB: 910 retval = fdctrl_read_statusB(fdctrl); 911 break; 912 case FD_REG_DOR: 913 retval = fdctrl_read_dor(fdctrl); 914 break; 915 case FD_REG_TDR: 916 retval = fdctrl_read_tape(fdctrl); 917 break; 918 case FD_REG_MSR: 919 retval = fdctrl_read_main_status(fdctrl); 920 break; 921 case FD_REG_FIFO: 922 retval = fdctrl_read_data(fdctrl); 923 break; 924 case FD_REG_DIR: 925 retval = fdctrl_read_dir(fdctrl); 926 break; 927 default: 928 retval = (uint32_t)(-1); 929 break; 930 } 931 trace_fdc_ioport_read(reg, retval); 932 933 return retval; 934 } 935 936 static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value) 937 { 938 FDCtrl *fdctrl = opaque; 939 940 reg &= 7; 941 trace_fdc_ioport_write(reg, value); 942 switch (reg) { 943 case FD_REG_DOR: 944 fdctrl_write_dor(fdctrl, value); 945 break; 946 case FD_REG_TDR: 947 fdctrl_write_tape(fdctrl, value); 948 break; 949 case FD_REG_DSR: 950 fdctrl_write_rate(fdctrl, value); 951 break; 952 case FD_REG_FIFO: 953 fdctrl_write_data(fdctrl, value); 954 break; 955 case FD_REG_CCR: 956 fdctrl_write_ccr(fdctrl, value); 957 break; 958 default: 959 break; 960 } 961 } 962 963 static uint64_t fdctrl_read_mem (void *opaque, hwaddr reg, 964 unsigned ize) 965 { 966 return fdctrl_read(opaque, (uint32_t)reg); 967 } 968 969 static void fdctrl_write_mem (void *opaque, hwaddr reg, 970 uint64_t value, unsigned size) 971 { 972 fdctrl_write(opaque, (uint32_t)reg, value); 973 } 974 975 static const MemoryRegionOps fdctrl_mem_ops = { 976 .read = fdctrl_read_mem, 977 .write = fdctrl_write_mem, 978 .endianness = DEVICE_NATIVE_ENDIAN, 979 }; 980 981 static const MemoryRegionOps fdctrl_mem_strict_ops = { 982 .read = fdctrl_read_mem, 983 .write = fdctrl_write_mem, 984 .endianness = DEVICE_NATIVE_ENDIAN, 985 .valid = { 986 .min_access_size = 1, 987 .max_access_size = 1, 988 }, 989 }; 990 991 static bool fdrive_media_changed_needed(void *opaque) 992 { 993 FDrive *drive = opaque; 994 995 return (drive->blk != NULL && drive->media_changed != 1); 996 } 997 998 static const VMStateDescription vmstate_fdrive_media_changed = { 999 .name = "fdrive/media_changed", 1000 .version_id = 1, 1001 .minimum_version_id = 1, 1002 .needed = fdrive_media_changed_needed, 1003 .fields = (VMStateField[]) { 1004 VMSTATE_UINT8(media_changed, FDrive), 1005 VMSTATE_END_OF_LIST() 1006 } 1007 }; 1008 1009 static bool fdrive_media_rate_needed(void *opaque) 1010 { 1011 FDrive *drive = opaque; 1012 1013 return drive->fdctrl->check_media_rate; 1014 } 1015 1016 static const VMStateDescription vmstate_fdrive_media_rate = { 1017 .name = "fdrive/media_rate", 1018 .version_id = 1, 1019 .minimum_version_id = 1, 1020 .needed = fdrive_media_rate_needed, 1021 .fields = (VMStateField[]) { 1022 VMSTATE_UINT8(media_rate, FDrive), 1023 VMSTATE_END_OF_LIST() 1024 } 1025 }; 1026 1027 static bool fdrive_perpendicular_needed(void *opaque) 1028 { 1029 FDrive *drive = opaque; 1030 1031 return drive->perpendicular != 0; 1032 } 1033 1034 static const VMStateDescription vmstate_fdrive_perpendicular = { 1035 .name = "fdrive/perpendicular", 1036 .version_id = 1, 1037 .minimum_version_id = 1, 1038 .needed = fdrive_perpendicular_needed, 1039 .fields = (VMStateField[]) { 1040 VMSTATE_UINT8(perpendicular, FDrive), 1041 VMSTATE_END_OF_LIST() 1042 } 1043 }; 1044 1045 static int fdrive_post_load(void *opaque, int version_id) 1046 { 1047 fd_revalidate(opaque); 1048 return 0; 1049 } 1050 1051 static const VMStateDescription vmstate_fdrive = { 1052 .name = "fdrive", 1053 .version_id = 1, 1054 .minimum_version_id = 1, 1055 .post_load = fdrive_post_load, 1056 .fields = (VMStateField[]) { 1057 VMSTATE_UINT8(head, FDrive), 1058 VMSTATE_UINT8(track, FDrive), 1059 VMSTATE_UINT8(sect, FDrive), 1060 VMSTATE_END_OF_LIST() 1061 }, 1062 .subsections = (const VMStateDescription*[]) { 1063 &vmstate_fdrive_media_changed, 1064 &vmstate_fdrive_media_rate, 1065 &vmstate_fdrive_perpendicular, 1066 NULL 1067 } 1068 }; 1069 1070 /* 1071 * Reconstructs the phase from register values according to the logic that was 1072 * implemented in qemu 2.3. This is the default value that is used if the phase 1073 * subsection is not present on migration. 1074 * 1075 * Don't change this function to reflect newer qemu versions, it is part of 1076 * the migration ABI. 1077 */ 1078 static int reconstruct_phase(FDCtrl *fdctrl) 1079 { 1080 if (fdctrl->msr & FD_MSR_NONDMA) { 1081 return FD_PHASE_EXECUTION; 1082 } else if ((fdctrl->msr & FD_MSR_RQM) == 0) { 1083 /* qemu 2.3 disabled RQM only during DMA transfers */ 1084 return FD_PHASE_EXECUTION; 1085 } else if (fdctrl->msr & FD_MSR_DIO) { 1086 return FD_PHASE_RESULT; 1087 } else { 1088 return FD_PHASE_COMMAND; 1089 } 1090 } 1091 1092 static int fdc_pre_save(void *opaque) 1093 { 1094 FDCtrl *s = opaque; 1095 1096 s->dor_vmstate = s->dor | GET_CUR_DRV(s); 1097 1098 return 0; 1099 } 1100 1101 static int fdc_pre_load(void *opaque) 1102 { 1103 FDCtrl *s = opaque; 1104 s->phase = FD_PHASE_RECONSTRUCT; 1105 return 0; 1106 } 1107 1108 static int fdc_post_load(void *opaque, int version_id) 1109 { 1110 FDCtrl *s = opaque; 1111 1112 SET_CUR_DRV(s, s->dor_vmstate & FD_DOR_SELMASK); 1113 s->dor = s->dor_vmstate & ~FD_DOR_SELMASK; 1114 1115 if (s->phase == FD_PHASE_RECONSTRUCT) { 1116 s->phase = reconstruct_phase(s); 1117 } 1118 1119 return 0; 1120 } 1121 1122 static bool fdc_reset_sensei_needed(void *opaque) 1123 { 1124 FDCtrl *s = opaque; 1125 1126 return s->reset_sensei != 0; 1127 } 1128 1129 static const VMStateDescription vmstate_fdc_reset_sensei = { 1130 .name = "fdc/reset_sensei", 1131 .version_id = 1, 1132 .minimum_version_id = 1, 1133 .needed = fdc_reset_sensei_needed, 1134 .fields = (VMStateField[]) { 1135 VMSTATE_INT32(reset_sensei, FDCtrl), 1136 VMSTATE_END_OF_LIST() 1137 } 1138 }; 1139 1140 static bool fdc_result_timer_needed(void *opaque) 1141 { 1142 FDCtrl *s = opaque; 1143 1144 return timer_pending(s->result_timer); 1145 } 1146 1147 static const VMStateDescription vmstate_fdc_result_timer = { 1148 .name = "fdc/result_timer", 1149 .version_id = 1, 1150 .minimum_version_id = 1, 1151 .needed = fdc_result_timer_needed, 1152 .fields = (VMStateField[]) { 1153 VMSTATE_TIMER_PTR(result_timer, FDCtrl), 1154 VMSTATE_END_OF_LIST() 1155 } 1156 }; 1157 1158 static bool fdc_phase_needed(void *opaque) 1159 { 1160 FDCtrl *fdctrl = opaque; 1161 1162 return reconstruct_phase(fdctrl) != fdctrl->phase; 1163 } 1164 1165 static const VMStateDescription vmstate_fdc_phase = { 1166 .name = "fdc/phase", 1167 .version_id = 1, 1168 .minimum_version_id = 1, 1169 .needed = fdc_phase_needed, 1170 .fields = (VMStateField[]) { 1171 VMSTATE_UINT8(phase, FDCtrl), 1172 VMSTATE_END_OF_LIST() 1173 } 1174 }; 1175 1176 static const VMStateDescription vmstate_fdc = { 1177 .name = "fdc", 1178 .version_id = 2, 1179 .minimum_version_id = 2, 1180 .pre_save = fdc_pre_save, 1181 .pre_load = fdc_pre_load, 1182 .post_load = fdc_post_load, 1183 .fields = (VMStateField[]) { 1184 /* Controller State */ 1185 VMSTATE_UINT8(sra, FDCtrl), 1186 VMSTATE_UINT8(srb, FDCtrl), 1187 VMSTATE_UINT8(dor_vmstate, FDCtrl), 1188 VMSTATE_UINT8(tdr, FDCtrl), 1189 VMSTATE_UINT8(dsr, FDCtrl), 1190 VMSTATE_UINT8(msr, FDCtrl), 1191 VMSTATE_UINT8(status0, FDCtrl), 1192 VMSTATE_UINT8(status1, FDCtrl), 1193 VMSTATE_UINT8(status2, FDCtrl), 1194 /* Command FIFO */ 1195 VMSTATE_VARRAY_INT32(fifo, FDCtrl, fifo_size, 0, vmstate_info_uint8, 1196 uint8_t), 1197 VMSTATE_UINT32(data_pos, FDCtrl), 1198 VMSTATE_UINT32(data_len, FDCtrl), 1199 VMSTATE_UINT8(data_state, FDCtrl), 1200 VMSTATE_UINT8(data_dir, FDCtrl), 1201 VMSTATE_UINT8(eot, FDCtrl), 1202 /* States kept only to be returned back */ 1203 VMSTATE_UINT8(timer0, FDCtrl), 1204 VMSTATE_UINT8(timer1, FDCtrl), 1205 VMSTATE_UINT8(precomp_trk, FDCtrl), 1206 VMSTATE_UINT8(config, FDCtrl), 1207 VMSTATE_UINT8(lock, FDCtrl), 1208 VMSTATE_UINT8(pwrd, FDCtrl), 1209 VMSTATE_UINT8_EQUAL(num_floppies, FDCtrl, NULL), 1210 VMSTATE_STRUCT_ARRAY(drives, FDCtrl, MAX_FD, 1, 1211 vmstate_fdrive, FDrive), 1212 VMSTATE_END_OF_LIST() 1213 }, 1214 .subsections = (const VMStateDescription*[]) { 1215 &vmstate_fdc_reset_sensei, 1216 &vmstate_fdc_result_timer, 1217 &vmstate_fdc_phase, 1218 NULL 1219 } 1220 }; 1221 1222 static void fdctrl_external_reset_sysbus(DeviceState *d) 1223 { 1224 FDCtrlSysBus *sys = SYSBUS_FDC(d); 1225 FDCtrl *s = &sys->state; 1226 1227 fdctrl_reset(s, 0); 1228 } 1229 1230 static void fdctrl_external_reset_isa(DeviceState *d) 1231 { 1232 FDCtrlISABus *isa = ISA_FDC(d); 1233 FDCtrl *s = &isa->state; 1234 1235 fdctrl_reset(s, 0); 1236 } 1237 1238 static void fdctrl_handle_tc(void *opaque, int irq, int level) 1239 { 1240 //FDCtrl *s = opaque; 1241 1242 if (level) { 1243 // XXX 1244 FLOPPY_DPRINTF("TC pulsed\n"); 1245 } 1246 } 1247 1248 /* Change IRQ state */ 1249 static void fdctrl_reset_irq(FDCtrl *fdctrl) 1250 { 1251 fdctrl->status0 = 0; 1252 if (!(fdctrl->sra & FD_SRA_INTPEND)) 1253 return; 1254 FLOPPY_DPRINTF("Reset interrupt\n"); 1255 qemu_set_irq(fdctrl->irq, 0); 1256 fdctrl->sra &= ~FD_SRA_INTPEND; 1257 } 1258 1259 static void fdctrl_raise_irq(FDCtrl *fdctrl) 1260 { 1261 if (!(fdctrl->sra & FD_SRA_INTPEND)) { 1262 qemu_set_irq(fdctrl->irq, 1); 1263 fdctrl->sra |= FD_SRA_INTPEND; 1264 } 1265 1266 fdctrl->reset_sensei = 0; 1267 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0); 1268 } 1269 1270 /* Reset controller */ 1271 static void fdctrl_reset(FDCtrl *fdctrl, int do_irq) 1272 { 1273 int i; 1274 1275 FLOPPY_DPRINTF("reset controller\n"); 1276 fdctrl_reset_irq(fdctrl); 1277 /* Initialise controller */ 1278 fdctrl->sra = 0; 1279 fdctrl->srb = 0xc0; 1280 if (!fdctrl->drives[1].blk) { 1281 fdctrl->sra |= FD_SRA_nDRV2; 1282 } 1283 fdctrl->cur_drv = 0; 1284 fdctrl->dor = FD_DOR_nRESET; 1285 fdctrl->dor |= (fdctrl->dma_chann != -1) ? FD_DOR_DMAEN : 0; 1286 fdctrl->msr = FD_MSR_RQM; 1287 fdctrl->reset_sensei = 0; 1288 timer_del(fdctrl->result_timer); 1289 /* FIFO state */ 1290 fdctrl->data_pos = 0; 1291 fdctrl->data_len = 0; 1292 fdctrl->data_state = 0; 1293 fdctrl->data_dir = FD_DIR_WRITE; 1294 for (i = 0; i < MAX_FD; i++) 1295 fd_recalibrate(&fdctrl->drives[i]); 1296 fdctrl_to_command_phase(fdctrl); 1297 if (do_irq) { 1298 fdctrl->status0 |= FD_SR0_RDYCHG; 1299 fdctrl_raise_irq(fdctrl); 1300 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT; 1301 } 1302 } 1303 1304 static inline FDrive *drv0(FDCtrl *fdctrl) 1305 { 1306 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2]; 1307 } 1308 1309 static inline FDrive *drv1(FDCtrl *fdctrl) 1310 { 1311 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2)) 1312 return &fdctrl->drives[1]; 1313 else 1314 return &fdctrl->drives[0]; 1315 } 1316 1317 #if MAX_FD == 4 1318 static inline FDrive *drv2(FDCtrl *fdctrl) 1319 { 1320 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2)) 1321 return &fdctrl->drives[2]; 1322 else 1323 return &fdctrl->drives[1]; 1324 } 1325 1326 static inline FDrive *drv3(FDCtrl *fdctrl) 1327 { 1328 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2)) 1329 return &fdctrl->drives[3]; 1330 else 1331 return &fdctrl->drives[2]; 1332 } 1333 #endif 1334 1335 static FDrive *get_drv(FDCtrl *fdctrl, int unit) 1336 { 1337 switch (unit) { 1338 case 0: return drv0(fdctrl); 1339 case 1: return drv1(fdctrl); 1340 #if MAX_FD == 4 1341 case 2: return drv2(fdctrl); 1342 case 3: return drv3(fdctrl); 1343 #endif 1344 default: return NULL; 1345 } 1346 } 1347 1348 static FDrive *get_cur_drv(FDCtrl *fdctrl) 1349 { 1350 return get_drv(fdctrl, fdctrl->cur_drv); 1351 } 1352 1353 /* Status A register : 0x00 (read-only) */ 1354 static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl) 1355 { 1356 uint32_t retval = fdctrl->sra; 1357 1358 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval); 1359 1360 return retval; 1361 } 1362 1363 /* Status B register : 0x01 (read-only) */ 1364 static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl) 1365 { 1366 uint32_t retval = fdctrl->srb; 1367 1368 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval); 1369 1370 return retval; 1371 } 1372 1373 /* Digital output register : 0x02 */ 1374 static uint32_t fdctrl_read_dor(FDCtrl *fdctrl) 1375 { 1376 uint32_t retval = fdctrl->dor; 1377 1378 /* Selected drive */ 1379 retval |= fdctrl->cur_drv; 1380 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval); 1381 1382 return retval; 1383 } 1384 1385 static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value) 1386 { 1387 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value); 1388 1389 /* Motors */ 1390 if (value & FD_DOR_MOTEN0) 1391 fdctrl->srb |= FD_SRB_MTR0; 1392 else 1393 fdctrl->srb &= ~FD_SRB_MTR0; 1394 if (value & FD_DOR_MOTEN1) 1395 fdctrl->srb |= FD_SRB_MTR1; 1396 else 1397 fdctrl->srb &= ~FD_SRB_MTR1; 1398 1399 /* Drive */ 1400 if (value & 1) 1401 fdctrl->srb |= FD_SRB_DR0; 1402 else 1403 fdctrl->srb &= ~FD_SRB_DR0; 1404 1405 /* Reset */ 1406 if (!(value & FD_DOR_nRESET)) { 1407 if (fdctrl->dor & FD_DOR_nRESET) { 1408 FLOPPY_DPRINTF("controller enter RESET state\n"); 1409 } 1410 } else { 1411 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1412 FLOPPY_DPRINTF("controller out of RESET state\n"); 1413 fdctrl_reset(fdctrl, 1); 1414 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1415 } 1416 } 1417 /* Selected drive */ 1418 fdctrl->cur_drv = value & FD_DOR_SELMASK; 1419 1420 fdctrl->dor = value; 1421 } 1422 1423 /* Tape drive register : 0x03 */ 1424 static uint32_t fdctrl_read_tape(FDCtrl *fdctrl) 1425 { 1426 uint32_t retval = fdctrl->tdr; 1427 1428 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval); 1429 1430 return retval; 1431 } 1432 1433 static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value) 1434 { 1435 /* Reset mode */ 1436 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1437 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1438 return; 1439 } 1440 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value); 1441 /* Disk boot selection indicator */ 1442 fdctrl->tdr = value & FD_TDR_BOOTSEL; 1443 /* Tape indicators: never allow */ 1444 } 1445 1446 /* Main status register : 0x04 (read) */ 1447 static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl) 1448 { 1449 uint32_t retval = fdctrl->msr; 1450 1451 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1452 fdctrl->dor |= FD_DOR_nRESET; 1453 1454 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval); 1455 1456 return retval; 1457 } 1458 1459 /* Data select rate register : 0x04 (write) */ 1460 static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value) 1461 { 1462 /* Reset mode */ 1463 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1464 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1465 return; 1466 } 1467 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value); 1468 /* Reset: autoclear */ 1469 if (value & FD_DSR_SWRESET) { 1470 fdctrl->dor &= ~FD_DOR_nRESET; 1471 fdctrl_reset(fdctrl, 1); 1472 fdctrl->dor |= FD_DOR_nRESET; 1473 } 1474 if (value & FD_DSR_PWRDOWN) { 1475 fdctrl_reset(fdctrl, 1); 1476 } 1477 fdctrl->dsr = value; 1478 } 1479 1480 /* Configuration control register: 0x07 (write) */ 1481 static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value) 1482 { 1483 /* Reset mode */ 1484 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1485 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1486 return; 1487 } 1488 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value); 1489 1490 /* Only the rate selection bits used in AT mode, and we 1491 * store those in the DSR. 1492 */ 1493 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) | 1494 (value & FD_DSR_DRATEMASK); 1495 } 1496 1497 static int fdctrl_media_changed(FDrive *drv) 1498 { 1499 return drv->media_changed; 1500 } 1501 1502 /* Digital input register : 0x07 (read-only) */ 1503 static uint32_t fdctrl_read_dir(FDCtrl *fdctrl) 1504 { 1505 uint32_t retval = 0; 1506 1507 if (fdctrl_media_changed(get_cur_drv(fdctrl))) { 1508 retval |= FD_DIR_DSKCHG; 1509 } 1510 if (retval != 0) { 1511 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval); 1512 } 1513 1514 return retval; 1515 } 1516 1517 /* Clear the FIFO and update the state for receiving the next command */ 1518 static void fdctrl_to_command_phase(FDCtrl *fdctrl) 1519 { 1520 fdctrl->phase = FD_PHASE_COMMAND; 1521 fdctrl->data_dir = FD_DIR_WRITE; 1522 fdctrl->data_pos = 0; 1523 fdctrl->data_len = 1; /* Accept command byte, adjust for params later */ 1524 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO); 1525 fdctrl->msr |= FD_MSR_RQM; 1526 } 1527 1528 /* Update the state to allow the guest to read out the command status. 1529 * @fifo_len is the number of result bytes to be read out. */ 1530 static void fdctrl_to_result_phase(FDCtrl *fdctrl, int fifo_len) 1531 { 1532 fdctrl->phase = FD_PHASE_RESULT; 1533 fdctrl->data_dir = FD_DIR_READ; 1534 fdctrl->data_len = fifo_len; 1535 fdctrl->data_pos = 0; 1536 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO; 1537 } 1538 1539 /* Set an error: unimplemented/unknown command */ 1540 static void fdctrl_unimplemented(FDCtrl *fdctrl, int direction) 1541 { 1542 qemu_log_mask(LOG_UNIMP, "fdc: unimplemented command 0x%02x\n", 1543 fdctrl->fifo[0]); 1544 fdctrl->fifo[0] = FD_SR0_INVCMD; 1545 fdctrl_to_result_phase(fdctrl, 1); 1546 } 1547 1548 /* Seek to next sector 1549 * returns 0 when end of track reached (for DBL_SIDES on head 1) 1550 * otherwise returns 1 1551 */ 1552 static int fdctrl_seek_to_next_sect(FDCtrl *fdctrl, FDrive *cur_drv) 1553 { 1554 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n", 1555 cur_drv->head, cur_drv->track, cur_drv->sect, 1556 fd_sector(cur_drv)); 1557 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an 1558 error in fact */ 1559 uint8_t new_head = cur_drv->head; 1560 uint8_t new_track = cur_drv->track; 1561 uint8_t new_sect = cur_drv->sect; 1562 1563 int ret = 1; 1564 1565 if (new_sect >= cur_drv->last_sect || 1566 new_sect == fdctrl->eot) { 1567 new_sect = 1; 1568 if (FD_MULTI_TRACK(fdctrl->data_state)) { 1569 if (new_head == 0 && 1570 (cur_drv->flags & FDISK_DBL_SIDES) != 0) { 1571 new_head = 1; 1572 } else { 1573 new_head = 0; 1574 new_track++; 1575 fdctrl->status0 |= FD_SR0_SEEK; 1576 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0) { 1577 ret = 0; 1578 } 1579 } 1580 } else { 1581 fdctrl->status0 |= FD_SR0_SEEK; 1582 new_track++; 1583 ret = 0; 1584 } 1585 if (ret == 1) { 1586 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n", 1587 new_head, new_track, new_sect, fd_sector(cur_drv)); 1588 } 1589 } else { 1590 new_sect++; 1591 } 1592 fd_seek(cur_drv, new_head, new_track, new_sect, 1); 1593 return ret; 1594 } 1595 1596 /* Callback for transfer end (stop or abort) */ 1597 static void fdctrl_stop_transfer(FDCtrl *fdctrl, uint8_t status0, 1598 uint8_t status1, uint8_t status2) 1599 { 1600 FDrive *cur_drv; 1601 cur_drv = get_cur_drv(fdctrl); 1602 1603 fdctrl->status0 &= ~(FD_SR0_DS0 | FD_SR0_DS1 | FD_SR0_HEAD); 1604 fdctrl->status0 |= GET_CUR_DRV(fdctrl); 1605 if (cur_drv->head) { 1606 fdctrl->status0 |= FD_SR0_HEAD; 1607 } 1608 fdctrl->status0 |= status0; 1609 1610 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n", 1611 status0, status1, status2, fdctrl->status0); 1612 fdctrl->fifo[0] = fdctrl->status0; 1613 fdctrl->fifo[1] = status1; 1614 fdctrl->fifo[2] = status2; 1615 fdctrl->fifo[3] = cur_drv->track; 1616 fdctrl->fifo[4] = cur_drv->head; 1617 fdctrl->fifo[5] = cur_drv->sect; 1618 fdctrl->fifo[6] = FD_SECTOR_SC; 1619 fdctrl->data_dir = FD_DIR_READ; 1620 if (!(fdctrl->msr & FD_MSR_NONDMA)) { 1621 IsaDmaClass *k = ISADMA_GET_CLASS(fdctrl->dma); 1622 k->release_DREQ(fdctrl->dma, fdctrl->dma_chann); 1623 } 1624 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO; 1625 fdctrl->msr &= ~FD_MSR_NONDMA; 1626 1627 fdctrl_to_result_phase(fdctrl, 7); 1628 fdctrl_raise_irq(fdctrl); 1629 } 1630 1631 /* Prepare a data transfer (either DMA or FIFO) */ 1632 static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction) 1633 { 1634 FDrive *cur_drv; 1635 uint8_t kh, kt, ks; 1636 1637 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1638 cur_drv = get_cur_drv(fdctrl); 1639 kt = fdctrl->fifo[2]; 1640 kh = fdctrl->fifo[3]; 1641 ks = fdctrl->fifo[4]; 1642 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n", 1643 GET_CUR_DRV(fdctrl), kh, kt, ks, 1644 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, 1645 NUM_SIDES(cur_drv))); 1646 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) { 1647 case 2: 1648 /* sect too big */ 1649 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1650 fdctrl->fifo[3] = kt; 1651 fdctrl->fifo[4] = kh; 1652 fdctrl->fifo[5] = ks; 1653 return; 1654 case 3: 1655 /* track too big */ 1656 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00); 1657 fdctrl->fifo[3] = kt; 1658 fdctrl->fifo[4] = kh; 1659 fdctrl->fifo[5] = ks; 1660 return; 1661 case 4: 1662 /* No seek enabled */ 1663 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1664 fdctrl->fifo[3] = kt; 1665 fdctrl->fifo[4] = kh; 1666 fdctrl->fifo[5] = ks; 1667 return; 1668 case 1: 1669 fdctrl->status0 |= FD_SR0_SEEK; 1670 break; 1671 default: 1672 break; 1673 } 1674 1675 /* Check the data rate. If the programmed data rate does not match 1676 * the currently inserted medium, the operation has to fail. */ 1677 if (fdctrl->check_media_rate && 1678 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) { 1679 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n", 1680 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate); 1681 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00); 1682 fdctrl->fifo[3] = kt; 1683 fdctrl->fifo[4] = kh; 1684 fdctrl->fifo[5] = ks; 1685 return; 1686 } 1687 1688 /* Set the FIFO state */ 1689 fdctrl->data_dir = direction; 1690 fdctrl->data_pos = 0; 1691 assert(fdctrl->msr & FD_MSR_CMDBUSY); 1692 if (fdctrl->fifo[0] & 0x80) 1693 fdctrl->data_state |= FD_STATE_MULTI; 1694 else 1695 fdctrl->data_state &= ~FD_STATE_MULTI; 1696 if (fdctrl->fifo[5] == 0) { 1697 fdctrl->data_len = fdctrl->fifo[8]; 1698 } else { 1699 int tmp; 1700 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]); 1701 tmp = (fdctrl->fifo[6] - ks + 1); 1702 if (fdctrl->fifo[0] & 0x80) 1703 tmp += fdctrl->fifo[6]; 1704 fdctrl->data_len *= tmp; 1705 } 1706 fdctrl->eot = fdctrl->fifo[6]; 1707 if (fdctrl->dor & FD_DOR_DMAEN) { 1708 IsaDmaTransferMode dma_mode; 1709 IsaDmaClass *k = ISADMA_GET_CLASS(fdctrl->dma); 1710 bool dma_mode_ok; 1711 /* DMA transfer are enabled. Check if DMA channel is well programmed */ 1712 dma_mode = k->get_transfer_mode(fdctrl->dma, fdctrl->dma_chann); 1713 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n", 1714 dma_mode, direction, 1715 (128 << fdctrl->fifo[5]) * 1716 (cur_drv->last_sect - ks + 1), fdctrl->data_len); 1717 switch (direction) { 1718 case FD_DIR_SCANE: 1719 case FD_DIR_SCANL: 1720 case FD_DIR_SCANH: 1721 dma_mode_ok = (dma_mode == ISADMA_TRANSFER_VERIFY); 1722 break; 1723 case FD_DIR_WRITE: 1724 dma_mode_ok = (dma_mode == ISADMA_TRANSFER_WRITE); 1725 break; 1726 case FD_DIR_READ: 1727 dma_mode_ok = (dma_mode == ISADMA_TRANSFER_READ); 1728 break; 1729 case FD_DIR_VERIFY: 1730 dma_mode_ok = true; 1731 break; 1732 default: 1733 dma_mode_ok = false; 1734 break; 1735 } 1736 if (dma_mode_ok) { 1737 /* No access is allowed until DMA transfer has completed */ 1738 fdctrl->msr &= ~FD_MSR_RQM; 1739 if (direction != FD_DIR_VERIFY) { 1740 /* Now, we just have to wait for the DMA controller to 1741 * recall us... 1742 */ 1743 k->hold_DREQ(fdctrl->dma, fdctrl->dma_chann); 1744 k->schedule(fdctrl->dma); 1745 } else { 1746 /* Start transfer */ 1747 fdctrl_transfer_handler(fdctrl, fdctrl->dma_chann, 0, 1748 fdctrl->data_len); 1749 } 1750 return; 1751 } else { 1752 FLOPPY_DPRINTF("bad dma_mode=%d direction=%d\n", dma_mode, 1753 direction); 1754 } 1755 } 1756 FLOPPY_DPRINTF("start non-DMA transfer\n"); 1757 fdctrl->msr |= FD_MSR_NONDMA | FD_MSR_RQM; 1758 if (direction != FD_DIR_WRITE) 1759 fdctrl->msr |= FD_MSR_DIO; 1760 /* IO based transfer: calculate len */ 1761 fdctrl_raise_irq(fdctrl); 1762 } 1763 1764 /* Prepare a transfer of deleted data */ 1765 static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction) 1766 { 1767 qemu_log_mask(LOG_UNIMP, "fdctrl_start_transfer_del() unimplemented\n"); 1768 1769 /* We don't handle deleted data, 1770 * so we don't return *ANYTHING* 1771 */ 1772 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1773 } 1774 1775 /* handlers for DMA transfers */ 1776 static int fdctrl_transfer_handler (void *opaque, int nchan, 1777 int dma_pos, int dma_len) 1778 { 1779 FDCtrl *fdctrl; 1780 FDrive *cur_drv; 1781 int len, start_pos, rel_pos; 1782 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00; 1783 IsaDmaClass *k; 1784 1785 fdctrl = opaque; 1786 if (fdctrl->msr & FD_MSR_RQM) { 1787 FLOPPY_DPRINTF("Not in DMA transfer mode !\n"); 1788 return 0; 1789 } 1790 k = ISADMA_GET_CLASS(fdctrl->dma); 1791 cur_drv = get_cur_drv(fdctrl); 1792 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL || 1793 fdctrl->data_dir == FD_DIR_SCANH) 1794 status2 = FD_SR2_SNS; 1795 if (dma_len > fdctrl->data_len) 1796 dma_len = fdctrl->data_len; 1797 if (cur_drv->blk == NULL) { 1798 if (fdctrl->data_dir == FD_DIR_WRITE) 1799 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1800 else 1801 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1802 len = 0; 1803 goto transfer_error; 1804 } 1805 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; 1806 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) { 1807 len = dma_len - fdctrl->data_pos; 1808 if (len + rel_pos > FD_SECTOR_LEN) 1809 len = FD_SECTOR_LEN - rel_pos; 1810 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x " 1811 "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos, 1812 fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head, 1813 cur_drv->track, cur_drv->sect, fd_sector(cur_drv), 1814 fd_sector(cur_drv) * FD_SECTOR_LEN); 1815 if (fdctrl->data_dir != FD_DIR_WRITE || 1816 len < FD_SECTOR_LEN || rel_pos != 0) { 1817 /* READ & SCAN commands and realign to a sector for WRITE */ 1818 if (blk_pread(cur_drv->blk, fd_offset(cur_drv), 1819 fdctrl->fifo, BDRV_SECTOR_SIZE) < 0) { 1820 FLOPPY_DPRINTF("Floppy: error getting sector %d\n", 1821 fd_sector(cur_drv)); 1822 /* Sure, image size is too small... */ 1823 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1824 } 1825 } 1826 switch (fdctrl->data_dir) { 1827 case FD_DIR_READ: 1828 /* READ commands */ 1829 k->write_memory(fdctrl->dma, nchan, fdctrl->fifo + rel_pos, 1830 fdctrl->data_pos, len); 1831 break; 1832 case FD_DIR_WRITE: 1833 /* WRITE commands */ 1834 if (cur_drv->ro) { 1835 /* Handle readonly medium early, no need to do DMA, touch the 1836 * LED or attempt any writes. A real floppy doesn't attempt 1837 * to write to readonly media either. */ 1838 fdctrl_stop_transfer(fdctrl, 1839 FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW, 1840 0x00); 1841 goto transfer_error; 1842 } 1843 1844 k->read_memory(fdctrl->dma, nchan, fdctrl->fifo + rel_pos, 1845 fdctrl->data_pos, len); 1846 if (blk_pwrite(cur_drv->blk, fd_offset(cur_drv), 1847 fdctrl->fifo, BDRV_SECTOR_SIZE, 0) < 0) { 1848 FLOPPY_DPRINTF("error writing sector %d\n", 1849 fd_sector(cur_drv)); 1850 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1851 goto transfer_error; 1852 } 1853 break; 1854 case FD_DIR_VERIFY: 1855 /* VERIFY commands */ 1856 break; 1857 default: 1858 /* SCAN commands */ 1859 { 1860 uint8_t tmpbuf[FD_SECTOR_LEN]; 1861 int ret; 1862 k->read_memory(fdctrl->dma, nchan, tmpbuf, fdctrl->data_pos, 1863 len); 1864 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len); 1865 if (ret == 0) { 1866 status2 = FD_SR2_SEH; 1867 goto end_transfer; 1868 } 1869 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) || 1870 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) { 1871 status2 = 0x00; 1872 goto end_transfer; 1873 } 1874 } 1875 break; 1876 } 1877 fdctrl->data_pos += len; 1878 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; 1879 if (rel_pos == 0) { 1880 /* Seek to next sector */ 1881 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) 1882 break; 1883 } 1884 } 1885 end_transfer: 1886 len = fdctrl->data_pos - start_pos; 1887 FLOPPY_DPRINTF("end transfer %d %d %d\n", 1888 fdctrl->data_pos, len, fdctrl->data_len); 1889 if (fdctrl->data_dir == FD_DIR_SCANE || 1890 fdctrl->data_dir == FD_DIR_SCANL || 1891 fdctrl->data_dir == FD_DIR_SCANH) 1892 status2 = FD_SR2_SEH; 1893 fdctrl->data_len -= len; 1894 fdctrl_stop_transfer(fdctrl, status0, status1, status2); 1895 transfer_error: 1896 1897 return len; 1898 } 1899 1900 /* Data register : 0x05 */ 1901 static uint32_t fdctrl_read_data(FDCtrl *fdctrl) 1902 { 1903 FDrive *cur_drv; 1904 uint32_t retval = 0; 1905 uint32_t pos; 1906 1907 cur_drv = get_cur_drv(fdctrl); 1908 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1909 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) { 1910 FLOPPY_DPRINTF("error: controller not ready for reading\n"); 1911 return 0; 1912 } 1913 1914 /* If data_len spans multiple sectors, the current position in the FIFO 1915 * wraps around while fdctrl->data_pos is the real position in the whole 1916 * request. */ 1917 pos = fdctrl->data_pos; 1918 pos %= FD_SECTOR_LEN; 1919 1920 switch (fdctrl->phase) { 1921 case FD_PHASE_EXECUTION: 1922 assert(fdctrl->msr & FD_MSR_NONDMA); 1923 if (pos == 0) { 1924 if (fdctrl->data_pos != 0) 1925 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) { 1926 FLOPPY_DPRINTF("error seeking to next sector %d\n", 1927 fd_sector(cur_drv)); 1928 return 0; 1929 } 1930 if (blk_pread(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo, 1931 BDRV_SECTOR_SIZE) 1932 < 0) { 1933 FLOPPY_DPRINTF("error getting sector %d\n", 1934 fd_sector(cur_drv)); 1935 /* Sure, image size is too small... */ 1936 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1937 } 1938 } 1939 1940 if (++fdctrl->data_pos == fdctrl->data_len) { 1941 fdctrl->msr &= ~FD_MSR_RQM; 1942 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1943 } 1944 break; 1945 1946 case FD_PHASE_RESULT: 1947 assert(!(fdctrl->msr & FD_MSR_NONDMA)); 1948 if (++fdctrl->data_pos == fdctrl->data_len) { 1949 fdctrl->msr &= ~FD_MSR_RQM; 1950 fdctrl_to_command_phase(fdctrl); 1951 fdctrl_reset_irq(fdctrl); 1952 } 1953 break; 1954 1955 case FD_PHASE_COMMAND: 1956 default: 1957 abort(); 1958 } 1959 1960 retval = fdctrl->fifo[pos]; 1961 FLOPPY_DPRINTF("data register: 0x%02x\n", retval); 1962 1963 return retval; 1964 } 1965 1966 static void fdctrl_format_sector(FDCtrl *fdctrl) 1967 { 1968 FDrive *cur_drv; 1969 uint8_t kh, kt, ks; 1970 1971 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1972 cur_drv = get_cur_drv(fdctrl); 1973 kt = fdctrl->fifo[6]; 1974 kh = fdctrl->fifo[7]; 1975 ks = fdctrl->fifo[8]; 1976 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n", 1977 GET_CUR_DRV(fdctrl), kh, kt, ks, 1978 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, 1979 NUM_SIDES(cur_drv))); 1980 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) { 1981 case 2: 1982 /* sect too big */ 1983 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1984 fdctrl->fifo[3] = kt; 1985 fdctrl->fifo[4] = kh; 1986 fdctrl->fifo[5] = ks; 1987 return; 1988 case 3: 1989 /* track too big */ 1990 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00); 1991 fdctrl->fifo[3] = kt; 1992 fdctrl->fifo[4] = kh; 1993 fdctrl->fifo[5] = ks; 1994 return; 1995 case 4: 1996 /* No seek enabled */ 1997 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1998 fdctrl->fifo[3] = kt; 1999 fdctrl->fifo[4] = kh; 2000 fdctrl->fifo[5] = ks; 2001 return; 2002 case 1: 2003 fdctrl->status0 |= FD_SR0_SEEK; 2004 break; 2005 default: 2006 break; 2007 } 2008 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 2009 if (cur_drv->blk == NULL || 2010 blk_pwrite(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo, 2011 BDRV_SECTOR_SIZE, 0) < 0) { 2012 FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv)); 2013 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 2014 } else { 2015 if (cur_drv->sect == cur_drv->last_sect) { 2016 fdctrl->data_state &= ~FD_STATE_FORMAT; 2017 /* Last sector done */ 2018 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2019 } else { 2020 /* More to do */ 2021 fdctrl->data_pos = 0; 2022 fdctrl->data_len = 4; 2023 } 2024 } 2025 } 2026 2027 static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction) 2028 { 2029 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0; 2030 fdctrl->fifo[0] = fdctrl->lock << 4; 2031 fdctrl_to_result_phase(fdctrl, 1); 2032 } 2033 2034 static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction) 2035 { 2036 FDrive *cur_drv = get_cur_drv(fdctrl); 2037 2038 /* Drives position */ 2039 fdctrl->fifo[0] = drv0(fdctrl)->track; 2040 fdctrl->fifo[1] = drv1(fdctrl)->track; 2041 #if MAX_FD == 4 2042 fdctrl->fifo[2] = drv2(fdctrl)->track; 2043 fdctrl->fifo[3] = drv3(fdctrl)->track; 2044 #else 2045 fdctrl->fifo[2] = 0; 2046 fdctrl->fifo[3] = 0; 2047 #endif 2048 /* timers */ 2049 fdctrl->fifo[4] = fdctrl->timer0; 2050 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0); 2051 fdctrl->fifo[6] = cur_drv->last_sect; 2052 fdctrl->fifo[7] = (fdctrl->lock << 7) | 2053 (cur_drv->perpendicular << 2); 2054 fdctrl->fifo[8] = fdctrl->config; 2055 fdctrl->fifo[9] = fdctrl->precomp_trk; 2056 fdctrl_to_result_phase(fdctrl, 10); 2057 } 2058 2059 static void fdctrl_handle_version(FDCtrl *fdctrl, int direction) 2060 { 2061 /* Controller's version */ 2062 fdctrl->fifo[0] = fdctrl->version; 2063 fdctrl_to_result_phase(fdctrl, 1); 2064 } 2065 2066 static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction) 2067 { 2068 fdctrl->fifo[0] = 0x41; /* Stepping 1 */ 2069 fdctrl_to_result_phase(fdctrl, 1); 2070 } 2071 2072 static void fdctrl_handle_restore(FDCtrl *fdctrl, int direction) 2073 { 2074 FDrive *cur_drv = get_cur_drv(fdctrl); 2075 2076 /* Drives position */ 2077 drv0(fdctrl)->track = fdctrl->fifo[3]; 2078 drv1(fdctrl)->track = fdctrl->fifo[4]; 2079 #if MAX_FD == 4 2080 drv2(fdctrl)->track = fdctrl->fifo[5]; 2081 drv3(fdctrl)->track = fdctrl->fifo[6]; 2082 #endif 2083 /* timers */ 2084 fdctrl->timer0 = fdctrl->fifo[7]; 2085 fdctrl->timer1 = fdctrl->fifo[8]; 2086 cur_drv->last_sect = fdctrl->fifo[9]; 2087 fdctrl->lock = fdctrl->fifo[10] >> 7; 2088 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF; 2089 fdctrl->config = fdctrl->fifo[11]; 2090 fdctrl->precomp_trk = fdctrl->fifo[12]; 2091 fdctrl->pwrd = fdctrl->fifo[13]; 2092 fdctrl_to_command_phase(fdctrl); 2093 } 2094 2095 static void fdctrl_handle_save(FDCtrl *fdctrl, int direction) 2096 { 2097 FDrive *cur_drv = get_cur_drv(fdctrl); 2098 2099 fdctrl->fifo[0] = 0; 2100 fdctrl->fifo[1] = 0; 2101 /* Drives position */ 2102 fdctrl->fifo[2] = drv0(fdctrl)->track; 2103 fdctrl->fifo[3] = drv1(fdctrl)->track; 2104 #if MAX_FD == 4 2105 fdctrl->fifo[4] = drv2(fdctrl)->track; 2106 fdctrl->fifo[5] = drv3(fdctrl)->track; 2107 #else 2108 fdctrl->fifo[4] = 0; 2109 fdctrl->fifo[5] = 0; 2110 #endif 2111 /* timers */ 2112 fdctrl->fifo[6] = fdctrl->timer0; 2113 fdctrl->fifo[7] = fdctrl->timer1; 2114 fdctrl->fifo[8] = cur_drv->last_sect; 2115 fdctrl->fifo[9] = (fdctrl->lock << 7) | 2116 (cur_drv->perpendicular << 2); 2117 fdctrl->fifo[10] = fdctrl->config; 2118 fdctrl->fifo[11] = fdctrl->precomp_trk; 2119 fdctrl->fifo[12] = fdctrl->pwrd; 2120 fdctrl->fifo[13] = 0; 2121 fdctrl->fifo[14] = 0; 2122 fdctrl_to_result_phase(fdctrl, 15); 2123 } 2124 2125 static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction) 2126 { 2127 FDrive *cur_drv = get_cur_drv(fdctrl); 2128 2129 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; 2130 timer_mod(fdctrl->result_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 2131 (NANOSECONDS_PER_SECOND / 50)); 2132 } 2133 2134 static void fdctrl_handle_format_track(FDCtrl *fdctrl, int direction) 2135 { 2136 FDrive *cur_drv; 2137 2138 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2139 cur_drv = get_cur_drv(fdctrl); 2140 fdctrl->data_state |= FD_STATE_FORMAT; 2141 if (fdctrl->fifo[0] & 0x80) 2142 fdctrl->data_state |= FD_STATE_MULTI; 2143 else 2144 fdctrl->data_state &= ~FD_STATE_MULTI; 2145 cur_drv->bps = 2146 fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2]; 2147 #if 0 2148 cur_drv->last_sect = 2149 cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] : 2150 fdctrl->fifo[3] / 2; 2151 #else 2152 cur_drv->last_sect = fdctrl->fifo[3]; 2153 #endif 2154 /* TODO: implement format using DMA expected by the Bochs BIOS 2155 * and Linux fdformat (read 3 bytes per sector via DMA and fill 2156 * the sector with the specified fill byte 2157 */ 2158 fdctrl->data_state &= ~FD_STATE_FORMAT; 2159 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2160 } 2161 2162 static void fdctrl_handle_specify(FDCtrl *fdctrl, int direction) 2163 { 2164 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF; 2165 fdctrl->timer1 = fdctrl->fifo[2] >> 1; 2166 if (fdctrl->fifo[2] & 1) 2167 fdctrl->dor &= ~FD_DOR_DMAEN; 2168 else 2169 fdctrl->dor |= FD_DOR_DMAEN; 2170 /* No result back */ 2171 fdctrl_to_command_phase(fdctrl); 2172 } 2173 2174 static void fdctrl_handle_sense_drive_status(FDCtrl *fdctrl, int direction) 2175 { 2176 FDrive *cur_drv; 2177 2178 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2179 cur_drv = get_cur_drv(fdctrl); 2180 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; 2181 /* 1 Byte status back */ 2182 fdctrl->fifo[0] = (cur_drv->ro << 6) | 2183 (cur_drv->track == 0 ? 0x10 : 0x00) | 2184 (cur_drv->head << 2) | 2185 GET_CUR_DRV(fdctrl) | 2186 0x28; 2187 fdctrl_to_result_phase(fdctrl, 1); 2188 } 2189 2190 static void fdctrl_handle_recalibrate(FDCtrl *fdctrl, int direction) 2191 { 2192 FDrive *cur_drv; 2193 2194 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2195 cur_drv = get_cur_drv(fdctrl); 2196 fd_recalibrate(cur_drv); 2197 fdctrl_to_command_phase(fdctrl); 2198 /* Raise Interrupt */ 2199 fdctrl->status0 |= FD_SR0_SEEK; 2200 fdctrl_raise_irq(fdctrl); 2201 } 2202 2203 static void fdctrl_handle_sense_interrupt_status(FDCtrl *fdctrl, int direction) 2204 { 2205 FDrive *cur_drv = get_cur_drv(fdctrl); 2206 2207 if (fdctrl->reset_sensei > 0) { 2208 fdctrl->fifo[0] = 2209 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei; 2210 fdctrl->reset_sensei--; 2211 } else if (!(fdctrl->sra & FD_SRA_INTPEND)) { 2212 fdctrl->fifo[0] = FD_SR0_INVCMD; 2213 fdctrl_to_result_phase(fdctrl, 1); 2214 return; 2215 } else { 2216 fdctrl->fifo[0] = 2217 (fdctrl->status0 & ~(FD_SR0_HEAD | FD_SR0_DS1 | FD_SR0_DS0)) 2218 | GET_CUR_DRV(fdctrl); 2219 } 2220 2221 fdctrl->fifo[1] = cur_drv->track; 2222 fdctrl_to_result_phase(fdctrl, 2); 2223 fdctrl_reset_irq(fdctrl); 2224 fdctrl->status0 = FD_SR0_RDYCHG; 2225 } 2226 2227 static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction) 2228 { 2229 FDrive *cur_drv; 2230 2231 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2232 cur_drv = get_cur_drv(fdctrl); 2233 fdctrl_to_command_phase(fdctrl); 2234 /* The seek command just sends step pulses to the drive and doesn't care if 2235 * there is a medium inserted of if it's banging the head against the drive. 2236 */ 2237 fd_seek(cur_drv, cur_drv->head, fdctrl->fifo[2], cur_drv->sect, 1); 2238 /* Raise Interrupt */ 2239 fdctrl->status0 |= FD_SR0_SEEK; 2240 fdctrl_raise_irq(fdctrl); 2241 } 2242 2243 static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction) 2244 { 2245 FDrive *cur_drv = get_cur_drv(fdctrl); 2246 2247 if (fdctrl->fifo[1] & 0x80) 2248 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7; 2249 /* No result back */ 2250 fdctrl_to_command_phase(fdctrl); 2251 } 2252 2253 static void fdctrl_handle_configure(FDCtrl *fdctrl, int direction) 2254 { 2255 fdctrl->config = fdctrl->fifo[2]; 2256 fdctrl->precomp_trk = fdctrl->fifo[3]; 2257 /* No result back */ 2258 fdctrl_to_command_phase(fdctrl); 2259 } 2260 2261 static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction) 2262 { 2263 fdctrl->pwrd = fdctrl->fifo[1]; 2264 fdctrl->fifo[0] = fdctrl->fifo[1]; 2265 fdctrl_to_result_phase(fdctrl, 1); 2266 } 2267 2268 static void fdctrl_handle_option(FDCtrl *fdctrl, int direction) 2269 { 2270 /* No result back */ 2271 fdctrl_to_command_phase(fdctrl); 2272 } 2273 2274 static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction) 2275 { 2276 FDrive *cur_drv = get_cur_drv(fdctrl); 2277 uint32_t pos; 2278 2279 pos = fdctrl->data_pos - 1; 2280 pos %= FD_SECTOR_LEN; 2281 if (fdctrl->fifo[pos] & 0x80) { 2282 /* Command parameters done */ 2283 if (fdctrl->fifo[pos] & 0x40) { 2284 fdctrl->fifo[0] = fdctrl->fifo[1]; 2285 fdctrl->fifo[2] = 0; 2286 fdctrl->fifo[3] = 0; 2287 fdctrl_to_result_phase(fdctrl, 4); 2288 } else { 2289 fdctrl_to_command_phase(fdctrl); 2290 } 2291 } else if (fdctrl->data_len > 7) { 2292 /* ERROR */ 2293 fdctrl->fifo[0] = 0x80 | 2294 (cur_drv->head << 2) | GET_CUR_DRV(fdctrl); 2295 fdctrl_to_result_phase(fdctrl, 1); 2296 } 2297 } 2298 2299 static void fdctrl_handle_relative_seek_in(FDCtrl *fdctrl, int direction) 2300 { 2301 FDrive *cur_drv; 2302 2303 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2304 cur_drv = get_cur_drv(fdctrl); 2305 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) { 2306 fd_seek(cur_drv, cur_drv->head, cur_drv->max_track - 1, 2307 cur_drv->sect, 1); 2308 } else { 2309 fd_seek(cur_drv, cur_drv->head, 2310 cur_drv->track + fdctrl->fifo[2], cur_drv->sect, 1); 2311 } 2312 fdctrl_to_command_phase(fdctrl); 2313 /* Raise Interrupt */ 2314 fdctrl->status0 |= FD_SR0_SEEK; 2315 fdctrl_raise_irq(fdctrl); 2316 } 2317 2318 static void fdctrl_handle_relative_seek_out(FDCtrl *fdctrl, int direction) 2319 { 2320 FDrive *cur_drv; 2321 2322 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2323 cur_drv = get_cur_drv(fdctrl); 2324 if (fdctrl->fifo[2] > cur_drv->track) { 2325 fd_seek(cur_drv, cur_drv->head, 0, cur_drv->sect, 1); 2326 } else { 2327 fd_seek(cur_drv, cur_drv->head, 2328 cur_drv->track - fdctrl->fifo[2], cur_drv->sect, 1); 2329 } 2330 fdctrl_to_command_phase(fdctrl); 2331 /* Raise Interrupt */ 2332 fdctrl->status0 |= FD_SR0_SEEK; 2333 fdctrl_raise_irq(fdctrl); 2334 } 2335 2336 /* 2337 * Handlers for the execution phase of each command 2338 */ 2339 typedef struct FDCtrlCommand { 2340 uint8_t value; 2341 uint8_t mask; 2342 const char* name; 2343 int parameters; 2344 void (*handler)(FDCtrl *fdctrl, int direction); 2345 int direction; 2346 } FDCtrlCommand; 2347 2348 static const FDCtrlCommand handlers[] = { 2349 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ }, 2350 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE }, 2351 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek }, 2352 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status }, 2353 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate }, 2354 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track }, 2355 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ }, 2356 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */ 2357 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */ 2358 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ }, 2359 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE }, 2360 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_start_transfer, FD_DIR_VERIFY }, 2361 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL }, 2362 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH }, 2363 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE }, 2364 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid }, 2365 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify }, 2366 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status }, 2367 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode }, 2368 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure }, 2369 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode }, 2370 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option }, 2371 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command }, 2372 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out }, 2373 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented }, 2374 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in }, 2375 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock }, 2376 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg }, 2377 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version }, 2378 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid }, 2379 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */ 2380 { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */ 2381 }; 2382 /* Associate command to an index in the 'handlers' array */ 2383 static uint8_t command_to_handler[256]; 2384 2385 static const FDCtrlCommand *get_command(uint8_t cmd) 2386 { 2387 int idx; 2388 2389 idx = command_to_handler[cmd]; 2390 FLOPPY_DPRINTF("%s command\n", handlers[idx].name); 2391 return &handlers[idx]; 2392 } 2393 2394 static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value) 2395 { 2396 FDrive *cur_drv; 2397 const FDCtrlCommand *cmd; 2398 uint32_t pos; 2399 2400 /* Reset mode */ 2401 if (!(fdctrl->dor & FD_DOR_nRESET)) { 2402 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 2403 return; 2404 } 2405 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) { 2406 FLOPPY_DPRINTF("error: controller not ready for writing\n"); 2407 return; 2408 } 2409 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 2410 2411 FLOPPY_DPRINTF("%s: %02x\n", __func__, value); 2412 2413 /* If data_len spans multiple sectors, the current position in the FIFO 2414 * wraps around while fdctrl->data_pos is the real position in the whole 2415 * request. */ 2416 pos = fdctrl->data_pos++; 2417 pos %= FD_SECTOR_LEN; 2418 fdctrl->fifo[pos] = value; 2419 2420 if (fdctrl->data_pos == fdctrl->data_len) { 2421 fdctrl->msr &= ~FD_MSR_RQM; 2422 } 2423 2424 switch (fdctrl->phase) { 2425 case FD_PHASE_EXECUTION: 2426 /* For DMA requests, RQM should be cleared during execution phase, so 2427 * we would have errored out above. */ 2428 assert(fdctrl->msr & FD_MSR_NONDMA); 2429 2430 /* FIFO data write */ 2431 if (pos == FD_SECTOR_LEN - 1 || 2432 fdctrl->data_pos == fdctrl->data_len) { 2433 cur_drv = get_cur_drv(fdctrl); 2434 if (blk_pwrite(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo, 2435 BDRV_SECTOR_SIZE, 0) < 0) { 2436 FLOPPY_DPRINTF("error writing sector %d\n", 2437 fd_sector(cur_drv)); 2438 break; 2439 } 2440 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) { 2441 FLOPPY_DPRINTF("error seeking to next sector %d\n", 2442 fd_sector(cur_drv)); 2443 break; 2444 } 2445 } 2446 2447 /* Switch to result phase when done with the transfer */ 2448 if (fdctrl->data_pos == fdctrl->data_len) { 2449 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2450 } 2451 break; 2452 2453 case FD_PHASE_COMMAND: 2454 assert(!(fdctrl->msr & FD_MSR_NONDMA)); 2455 assert(fdctrl->data_pos < FD_SECTOR_LEN); 2456 2457 if (pos == 0) { 2458 /* The first byte specifies the command. Now we start reading 2459 * as many parameters as this command requires. */ 2460 cmd = get_command(value); 2461 fdctrl->data_len = cmd->parameters + 1; 2462 if (cmd->parameters) { 2463 fdctrl->msr |= FD_MSR_RQM; 2464 } 2465 fdctrl->msr |= FD_MSR_CMDBUSY; 2466 } 2467 2468 if (fdctrl->data_pos == fdctrl->data_len) { 2469 /* We have all parameters now, execute the command */ 2470 fdctrl->phase = FD_PHASE_EXECUTION; 2471 2472 if (fdctrl->data_state & FD_STATE_FORMAT) { 2473 fdctrl_format_sector(fdctrl); 2474 break; 2475 } 2476 2477 cmd = get_command(fdctrl->fifo[0]); 2478 FLOPPY_DPRINTF("Calling handler for '%s'\n", cmd->name); 2479 cmd->handler(fdctrl, cmd->direction); 2480 } 2481 break; 2482 2483 case FD_PHASE_RESULT: 2484 default: 2485 abort(); 2486 } 2487 } 2488 2489 static void fdctrl_result_timer(void *opaque) 2490 { 2491 FDCtrl *fdctrl = opaque; 2492 FDrive *cur_drv = get_cur_drv(fdctrl); 2493 2494 /* Pretend we are spinning. 2495 * This is needed for Coherent, which uses READ ID to check for 2496 * sector interleaving. 2497 */ 2498 if (cur_drv->last_sect != 0) { 2499 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1; 2500 } 2501 /* READ_ID can't automatically succeed! */ 2502 if (fdctrl->check_media_rate && 2503 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) { 2504 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n", 2505 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate); 2506 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00); 2507 } else { 2508 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2509 } 2510 } 2511 2512 /* Init functions */ 2513 static void fdctrl_connect_drives(FDCtrl *fdctrl, DeviceState *fdc_dev, 2514 Error **errp) 2515 { 2516 unsigned int i; 2517 FDrive *drive; 2518 DeviceState *dev; 2519 BlockBackend *blk; 2520 Error *local_err = NULL; 2521 2522 for (i = 0; i < MAX_FD; i++) { 2523 drive = &fdctrl->drives[i]; 2524 drive->fdctrl = fdctrl; 2525 2526 /* If the drive is not present, we skip creating the qdev device, but 2527 * still have to initialise the controller. */ 2528 blk = fdctrl->qdev_for_drives[i].blk; 2529 if (!blk) { 2530 fd_init(drive); 2531 fd_revalidate(drive); 2532 continue; 2533 } 2534 2535 dev = qdev_create(&fdctrl->bus.bus, "floppy"); 2536 qdev_prop_set_uint32(dev, "unit", i); 2537 qdev_prop_set_enum(dev, "drive-type", fdctrl->qdev_for_drives[i].type); 2538 2539 blk_ref(blk); 2540 blk_detach_dev(blk, fdc_dev); 2541 fdctrl->qdev_for_drives[i].blk = NULL; 2542 qdev_prop_set_drive(dev, "drive", blk, &local_err); 2543 blk_unref(blk); 2544 2545 if (local_err) { 2546 error_propagate(errp, local_err); 2547 return; 2548 } 2549 2550 object_property_set_bool(OBJECT(dev), true, "realized", &local_err); 2551 if (local_err) { 2552 error_propagate(errp, local_err); 2553 return; 2554 } 2555 } 2556 } 2557 2558 ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds) 2559 { 2560 DeviceState *dev; 2561 ISADevice *isadev; 2562 2563 isadev = isa_try_create(bus, TYPE_ISA_FDC); 2564 if (!isadev) { 2565 return NULL; 2566 } 2567 dev = DEVICE(isadev); 2568 2569 if (fds[0]) { 2570 qdev_prop_set_drive(dev, "driveA", blk_by_legacy_dinfo(fds[0]), 2571 &error_fatal); 2572 } 2573 if (fds[1]) { 2574 qdev_prop_set_drive(dev, "driveB", blk_by_legacy_dinfo(fds[1]), 2575 &error_fatal); 2576 } 2577 qdev_init_nofail(dev); 2578 2579 return isadev; 2580 } 2581 2582 void fdctrl_init_sysbus(qemu_irq irq, int dma_chann, 2583 hwaddr mmio_base, DriveInfo **fds) 2584 { 2585 FDCtrl *fdctrl; 2586 DeviceState *dev; 2587 SysBusDevice *sbd; 2588 FDCtrlSysBus *sys; 2589 2590 dev = qdev_create(NULL, "sysbus-fdc"); 2591 sys = SYSBUS_FDC(dev); 2592 fdctrl = &sys->state; 2593 fdctrl->dma_chann = dma_chann; /* FIXME */ 2594 if (fds[0]) { 2595 qdev_prop_set_drive(dev, "driveA", blk_by_legacy_dinfo(fds[0]), 2596 &error_fatal); 2597 } 2598 if (fds[1]) { 2599 qdev_prop_set_drive(dev, "driveB", blk_by_legacy_dinfo(fds[1]), 2600 &error_fatal); 2601 } 2602 qdev_init_nofail(dev); 2603 sbd = SYS_BUS_DEVICE(dev); 2604 sysbus_connect_irq(sbd, 0, irq); 2605 sysbus_mmio_map(sbd, 0, mmio_base); 2606 } 2607 2608 void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base, 2609 DriveInfo **fds, qemu_irq *fdc_tc) 2610 { 2611 DeviceState *dev; 2612 FDCtrlSysBus *sys; 2613 2614 dev = qdev_create(NULL, "SUNW,fdtwo"); 2615 if (fds[0]) { 2616 qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(fds[0]), 2617 &error_fatal); 2618 } 2619 qdev_init_nofail(dev); 2620 sys = SYSBUS_FDC(dev); 2621 sysbus_connect_irq(SYS_BUS_DEVICE(sys), 0, irq); 2622 sysbus_mmio_map(SYS_BUS_DEVICE(sys), 0, io_base); 2623 *fdc_tc = qdev_get_gpio_in(dev, 0); 2624 } 2625 2626 static void fdctrl_realize_common(DeviceState *dev, FDCtrl *fdctrl, 2627 Error **errp) 2628 { 2629 int i, j; 2630 static int command_tables_inited = 0; 2631 2632 if (fdctrl->fallback == FLOPPY_DRIVE_TYPE_AUTO) { 2633 error_setg(errp, "Cannot choose a fallback FDrive type of 'auto'"); 2634 } 2635 2636 /* Fill 'command_to_handler' lookup table */ 2637 if (!command_tables_inited) { 2638 command_tables_inited = 1; 2639 for (i = ARRAY_SIZE(handlers) - 1; i >= 0; i--) { 2640 for (j = 0; j < sizeof(command_to_handler); j++) { 2641 if ((j & handlers[i].mask) == handlers[i].value) { 2642 command_to_handler[j] = i; 2643 } 2644 } 2645 } 2646 } 2647 2648 FLOPPY_DPRINTF("init controller\n"); 2649 fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN); 2650 fdctrl->fifo_size = 512; 2651 fdctrl->result_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, 2652 fdctrl_result_timer, fdctrl); 2653 2654 fdctrl->version = 0x90; /* Intel 82078 controller */ 2655 fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */ 2656 fdctrl->num_floppies = MAX_FD; 2657 2658 if (fdctrl->dma_chann != -1) { 2659 IsaDmaClass *k; 2660 assert(fdctrl->dma); 2661 k = ISADMA_GET_CLASS(fdctrl->dma); 2662 k->register_channel(fdctrl->dma, fdctrl->dma_chann, 2663 &fdctrl_transfer_handler, fdctrl); 2664 } 2665 2666 floppy_bus_create(fdctrl, &fdctrl->bus, dev); 2667 fdctrl_connect_drives(fdctrl, dev, errp); 2668 } 2669 2670 static const MemoryRegionPortio fdc_portio_list[] = { 2671 { 1, 5, 1, .read = fdctrl_read, .write = fdctrl_write }, 2672 { 7, 1, 1, .read = fdctrl_read, .write = fdctrl_write }, 2673 PORTIO_END_OF_LIST(), 2674 }; 2675 2676 static void isabus_fdc_realize(DeviceState *dev, Error **errp) 2677 { 2678 ISADevice *isadev = ISA_DEVICE(dev); 2679 FDCtrlISABus *isa = ISA_FDC(dev); 2680 FDCtrl *fdctrl = &isa->state; 2681 Error *err = NULL; 2682 2683 isa_register_portio_list(isadev, &fdctrl->portio_list, 2684 isa->iobase, fdc_portio_list, fdctrl, 2685 "fdc"); 2686 2687 isa_init_irq(isadev, &fdctrl->irq, isa->irq); 2688 fdctrl->dma_chann = isa->dma; 2689 if (fdctrl->dma_chann != -1) { 2690 fdctrl->dma = isa_get_dma(isa_bus_from_device(isadev), isa->dma); 2691 if (!fdctrl->dma) { 2692 error_setg(errp, "ISA controller does not support DMA"); 2693 return; 2694 } 2695 } 2696 2697 qdev_set_legacy_instance_id(dev, isa->iobase, 2); 2698 fdctrl_realize_common(dev, fdctrl, &err); 2699 if (err != NULL) { 2700 error_propagate(errp, err); 2701 return; 2702 } 2703 } 2704 2705 static void sysbus_fdc_initfn(Object *obj) 2706 { 2707 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 2708 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2709 FDCtrl *fdctrl = &sys->state; 2710 2711 fdctrl->dma_chann = -1; 2712 2713 memory_region_init_io(&fdctrl->iomem, obj, &fdctrl_mem_ops, fdctrl, 2714 "fdc", 0x08); 2715 sysbus_init_mmio(sbd, &fdctrl->iomem); 2716 } 2717 2718 static void sun4m_fdc_initfn(Object *obj) 2719 { 2720 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 2721 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2722 FDCtrl *fdctrl = &sys->state; 2723 2724 fdctrl->dma_chann = -1; 2725 2726 memory_region_init_io(&fdctrl->iomem, obj, &fdctrl_mem_strict_ops, 2727 fdctrl, "fdctrl", 0x08); 2728 sysbus_init_mmio(sbd, &fdctrl->iomem); 2729 } 2730 2731 static void sysbus_fdc_common_initfn(Object *obj) 2732 { 2733 DeviceState *dev = DEVICE(obj); 2734 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 2735 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2736 FDCtrl *fdctrl = &sys->state; 2737 2738 qdev_set_legacy_instance_id(dev, 0 /* io */, 2); /* FIXME */ 2739 2740 sysbus_init_irq(sbd, &fdctrl->irq); 2741 qdev_init_gpio_in(dev, fdctrl_handle_tc, 1); 2742 } 2743 2744 static void sysbus_fdc_common_realize(DeviceState *dev, Error **errp) 2745 { 2746 FDCtrlSysBus *sys = SYSBUS_FDC(dev); 2747 FDCtrl *fdctrl = &sys->state; 2748 2749 fdctrl_realize_common(dev, fdctrl, errp); 2750 } 2751 2752 FloppyDriveType isa_fdc_get_drive_type(ISADevice *fdc, int i) 2753 { 2754 FDCtrlISABus *isa = ISA_FDC(fdc); 2755 2756 return isa->state.drives[i].drive; 2757 } 2758 2759 void isa_fdc_get_drive_max_chs(FloppyDriveType type, 2760 uint8_t *maxc, uint8_t *maxh, uint8_t *maxs) 2761 { 2762 const FDFormat *fdf; 2763 2764 *maxc = *maxh = *maxs = 0; 2765 for (fdf = fd_formats; fdf->drive != FLOPPY_DRIVE_TYPE_NONE; fdf++) { 2766 if (fdf->drive != type) { 2767 continue; 2768 } 2769 if (*maxc < fdf->max_track) { 2770 *maxc = fdf->max_track; 2771 } 2772 if (*maxh < fdf->max_head) { 2773 *maxh = fdf->max_head; 2774 } 2775 if (*maxs < fdf->last_sect) { 2776 *maxs = fdf->last_sect; 2777 } 2778 } 2779 (*maxc)--; 2780 } 2781 2782 static const VMStateDescription vmstate_isa_fdc ={ 2783 .name = "fdc", 2784 .version_id = 2, 2785 .minimum_version_id = 2, 2786 .fields = (VMStateField[]) { 2787 VMSTATE_STRUCT(state, FDCtrlISABus, 0, vmstate_fdc, FDCtrl), 2788 VMSTATE_END_OF_LIST() 2789 } 2790 }; 2791 2792 static Property isa_fdc_properties[] = { 2793 DEFINE_PROP_UINT32("iobase", FDCtrlISABus, iobase, 0x3f0), 2794 DEFINE_PROP_UINT32("irq", FDCtrlISABus, irq, 6), 2795 DEFINE_PROP_UINT32("dma", FDCtrlISABus, dma, 2), 2796 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.qdev_for_drives[0].blk), 2797 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.qdev_for_drives[1].blk), 2798 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus, state.check_media_rate, 2799 0, true), 2800 DEFINE_PROP_SIGNED("fdtypeA", FDCtrlISABus, state.qdev_for_drives[0].type, 2801 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2802 FloppyDriveType), 2803 DEFINE_PROP_SIGNED("fdtypeB", FDCtrlISABus, state.qdev_for_drives[1].type, 2804 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2805 FloppyDriveType), 2806 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus, state.fallback, 2807 FLOPPY_DRIVE_TYPE_288, qdev_prop_fdc_drive_type, 2808 FloppyDriveType), 2809 DEFINE_PROP_END_OF_LIST(), 2810 }; 2811 2812 static void isabus_fdc_class_init(ObjectClass *klass, void *data) 2813 { 2814 DeviceClass *dc = DEVICE_CLASS(klass); 2815 2816 dc->realize = isabus_fdc_realize; 2817 dc->fw_name = "fdc"; 2818 dc->reset = fdctrl_external_reset_isa; 2819 dc->vmsd = &vmstate_isa_fdc; 2820 dc->props = isa_fdc_properties; 2821 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2822 } 2823 2824 static void isabus_fdc_instance_init(Object *obj) 2825 { 2826 FDCtrlISABus *isa = ISA_FDC(obj); 2827 2828 device_add_bootindex_property(obj, &isa->bootindexA, 2829 "bootindexA", "/floppy@0", 2830 DEVICE(obj), NULL); 2831 device_add_bootindex_property(obj, &isa->bootindexB, 2832 "bootindexB", "/floppy@1", 2833 DEVICE(obj), NULL); 2834 } 2835 2836 static const TypeInfo isa_fdc_info = { 2837 .name = TYPE_ISA_FDC, 2838 .parent = TYPE_ISA_DEVICE, 2839 .instance_size = sizeof(FDCtrlISABus), 2840 .class_init = isabus_fdc_class_init, 2841 .instance_init = isabus_fdc_instance_init, 2842 }; 2843 2844 static const VMStateDescription vmstate_sysbus_fdc ={ 2845 .name = "fdc", 2846 .version_id = 2, 2847 .minimum_version_id = 2, 2848 .fields = (VMStateField[]) { 2849 VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl), 2850 VMSTATE_END_OF_LIST() 2851 } 2852 }; 2853 2854 static Property sysbus_fdc_properties[] = { 2855 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.qdev_for_drives[0].blk), 2856 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.qdev_for_drives[1].blk), 2857 DEFINE_PROP_SIGNED("fdtypeA", FDCtrlSysBus, state.qdev_for_drives[0].type, 2858 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2859 FloppyDriveType), 2860 DEFINE_PROP_SIGNED("fdtypeB", FDCtrlSysBus, state.qdev_for_drives[1].type, 2861 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2862 FloppyDriveType), 2863 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus, state.fallback, 2864 FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type, 2865 FloppyDriveType), 2866 DEFINE_PROP_END_OF_LIST(), 2867 }; 2868 2869 static void sysbus_fdc_class_init(ObjectClass *klass, void *data) 2870 { 2871 DeviceClass *dc = DEVICE_CLASS(klass); 2872 2873 dc->props = sysbus_fdc_properties; 2874 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2875 } 2876 2877 static const TypeInfo sysbus_fdc_info = { 2878 .name = "sysbus-fdc", 2879 .parent = TYPE_SYSBUS_FDC, 2880 .instance_init = sysbus_fdc_initfn, 2881 .class_init = sysbus_fdc_class_init, 2882 }; 2883 2884 static Property sun4m_fdc_properties[] = { 2885 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.qdev_for_drives[0].blk), 2886 DEFINE_PROP_SIGNED("fdtype", FDCtrlSysBus, state.qdev_for_drives[0].type, 2887 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2888 FloppyDriveType), 2889 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus, state.fallback, 2890 FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type, 2891 FloppyDriveType), 2892 DEFINE_PROP_END_OF_LIST(), 2893 }; 2894 2895 static void sun4m_fdc_class_init(ObjectClass *klass, void *data) 2896 { 2897 DeviceClass *dc = DEVICE_CLASS(klass); 2898 2899 dc->props = sun4m_fdc_properties; 2900 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2901 } 2902 2903 static const TypeInfo sun4m_fdc_info = { 2904 .name = "SUNW,fdtwo", 2905 .parent = TYPE_SYSBUS_FDC, 2906 .instance_init = sun4m_fdc_initfn, 2907 .class_init = sun4m_fdc_class_init, 2908 }; 2909 2910 static void sysbus_fdc_common_class_init(ObjectClass *klass, void *data) 2911 { 2912 DeviceClass *dc = DEVICE_CLASS(klass); 2913 2914 dc->realize = sysbus_fdc_common_realize; 2915 dc->reset = fdctrl_external_reset_sysbus; 2916 dc->vmsd = &vmstate_sysbus_fdc; 2917 } 2918 2919 static const TypeInfo sysbus_fdc_type_info = { 2920 .name = TYPE_SYSBUS_FDC, 2921 .parent = TYPE_SYS_BUS_DEVICE, 2922 .instance_size = sizeof(FDCtrlSysBus), 2923 .instance_init = sysbus_fdc_common_initfn, 2924 .abstract = true, 2925 .class_init = sysbus_fdc_common_class_init, 2926 }; 2927 2928 static void fdc_register_types(void) 2929 { 2930 type_register_static(&isa_fdc_info); 2931 type_register_static(&sysbus_fdc_type_info); 2932 type_register_static(&sysbus_fdc_info); 2933 type_register_static(&sun4m_fdc_info); 2934 type_register_static(&floppy_bus_info); 2935 type_register_static(&floppy_drive_info); 2936 } 2937 2938 type_init(fdc_register_types) 2939