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/block/fdc.h" 32 #include "qapi/error.h" 33 #include "qemu/error-report.h" 34 #include "qemu/timer.h" 35 #include "hw/acpi/aml-build.h" 36 #include "hw/irq.h" 37 #include "hw/isa/isa.h" 38 #include "hw/qdev-properties.h" 39 #include "hw/sysbus.h" 40 #include "migration/vmstate.h" 41 #include "hw/block/block.h" 42 #include "sysemu/block-backend.h" 43 #include "sysemu/blockdev.h" 44 #include "sysemu/sysemu.h" 45 #include "qemu/log.h" 46 #include "qemu/main-loop.h" 47 #include "qemu/module.h" 48 #include "trace.h" 49 50 /********************************************************/ 51 /* debug Floppy devices */ 52 53 #define DEBUG_FLOPPY 0 54 55 #define FLOPPY_DPRINTF(fmt, ...) \ 56 do { \ 57 if (DEBUG_FLOPPY) { \ 58 fprintf(stderr, "FLOPPY: " fmt , ## __VA_ARGS__); \ 59 } \ 60 } while (0) 61 62 63 /********************************************************/ 64 /* qdev floppy bus */ 65 66 #define TYPE_FLOPPY_BUS "floppy-bus" 67 #define FLOPPY_BUS(obj) OBJECT_CHECK(FloppyBus, (obj), TYPE_FLOPPY_BUS) 68 69 typedef struct FDCtrl FDCtrl; 70 typedef struct FDrive FDrive; 71 static FDrive *get_drv(FDCtrl *fdctrl, int unit); 72 73 typedef struct FloppyBus { 74 BusState bus; 75 FDCtrl *fdc; 76 } FloppyBus; 77 78 static const TypeInfo floppy_bus_info = { 79 .name = TYPE_FLOPPY_BUS, 80 .parent = TYPE_BUS, 81 .instance_size = sizeof(FloppyBus), 82 }; 83 84 static void floppy_bus_create(FDCtrl *fdc, FloppyBus *bus, DeviceState *dev) 85 { 86 qbus_create_inplace(bus, sizeof(FloppyBus), TYPE_FLOPPY_BUS, dev, NULL); 87 bus->fdc = fdc; 88 } 89 90 91 /********************************************************/ 92 /* Floppy drive emulation */ 93 94 typedef enum FDriveRate { 95 FDRIVE_RATE_500K = 0x00, /* 500 Kbps */ 96 FDRIVE_RATE_300K = 0x01, /* 300 Kbps */ 97 FDRIVE_RATE_250K = 0x02, /* 250 Kbps */ 98 FDRIVE_RATE_1M = 0x03, /* 1 Mbps */ 99 } FDriveRate; 100 101 typedef enum FDriveSize { 102 FDRIVE_SIZE_UNKNOWN, 103 FDRIVE_SIZE_350, 104 FDRIVE_SIZE_525, 105 } FDriveSize; 106 107 typedef struct FDFormat { 108 FloppyDriveType drive; 109 uint8_t last_sect; 110 uint8_t max_track; 111 uint8_t max_head; 112 FDriveRate rate; 113 } FDFormat; 114 115 /* In many cases, the total sector size of a format is enough to uniquely 116 * identify it. However, there are some total sector collisions between 117 * formats of different physical size, and these are noted below by 118 * highlighting the total sector size for entries with collisions. */ 119 static const FDFormat fd_formats[] = { 120 /* First entry is default format */ 121 /* 1.44 MB 3"1/2 floppy disks */ 122 { FLOPPY_DRIVE_TYPE_144, 18, 80, 1, FDRIVE_RATE_500K, }, /* 3.5" 2880 */ 123 { FLOPPY_DRIVE_TYPE_144, 20, 80, 1, FDRIVE_RATE_500K, }, /* 3.5" 3200 */ 124 { FLOPPY_DRIVE_TYPE_144, 21, 80, 1, FDRIVE_RATE_500K, }, 125 { FLOPPY_DRIVE_TYPE_144, 21, 82, 1, FDRIVE_RATE_500K, }, 126 { FLOPPY_DRIVE_TYPE_144, 21, 83, 1, FDRIVE_RATE_500K, }, 127 { FLOPPY_DRIVE_TYPE_144, 22, 80, 1, FDRIVE_RATE_500K, }, 128 { FLOPPY_DRIVE_TYPE_144, 23, 80, 1, FDRIVE_RATE_500K, }, 129 { FLOPPY_DRIVE_TYPE_144, 24, 80, 1, FDRIVE_RATE_500K, }, 130 /* 2.88 MB 3"1/2 floppy disks */ 131 { FLOPPY_DRIVE_TYPE_288, 36, 80, 1, FDRIVE_RATE_1M, }, 132 { FLOPPY_DRIVE_TYPE_288, 39, 80, 1, FDRIVE_RATE_1M, }, 133 { FLOPPY_DRIVE_TYPE_288, 40, 80, 1, FDRIVE_RATE_1M, }, 134 { FLOPPY_DRIVE_TYPE_288, 44, 80, 1, FDRIVE_RATE_1M, }, 135 { FLOPPY_DRIVE_TYPE_288, 48, 80, 1, FDRIVE_RATE_1M, }, 136 /* 720 kB 3"1/2 floppy disks */ 137 { FLOPPY_DRIVE_TYPE_144, 9, 80, 1, FDRIVE_RATE_250K, }, /* 3.5" 1440 */ 138 { FLOPPY_DRIVE_TYPE_144, 10, 80, 1, FDRIVE_RATE_250K, }, 139 { FLOPPY_DRIVE_TYPE_144, 10, 82, 1, FDRIVE_RATE_250K, }, 140 { FLOPPY_DRIVE_TYPE_144, 10, 83, 1, FDRIVE_RATE_250K, }, 141 { FLOPPY_DRIVE_TYPE_144, 13, 80, 1, FDRIVE_RATE_250K, }, 142 { FLOPPY_DRIVE_TYPE_144, 14, 80, 1, FDRIVE_RATE_250K, }, 143 /* 1.2 MB 5"1/4 floppy disks */ 144 { FLOPPY_DRIVE_TYPE_120, 15, 80, 1, FDRIVE_RATE_500K, }, 145 { FLOPPY_DRIVE_TYPE_120, 18, 80, 1, FDRIVE_RATE_500K, }, /* 5.25" 2880 */ 146 { FLOPPY_DRIVE_TYPE_120, 18, 82, 1, FDRIVE_RATE_500K, }, 147 { FLOPPY_DRIVE_TYPE_120, 18, 83, 1, FDRIVE_RATE_500K, }, 148 { FLOPPY_DRIVE_TYPE_120, 20, 80, 1, FDRIVE_RATE_500K, }, /* 5.25" 3200 */ 149 /* 720 kB 5"1/4 floppy disks */ 150 { FLOPPY_DRIVE_TYPE_120, 9, 80, 1, FDRIVE_RATE_250K, }, /* 5.25" 1440 */ 151 { FLOPPY_DRIVE_TYPE_120, 11, 80, 1, FDRIVE_RATE_250K, }, 152 /* 360 kB 5"1/4 floppy disks */ 153 { FLOPPY_DRIVE_TYPE_120, 9, 40, 1, FDRIVE_RATE_300K, }, /* 5.25" 720 */ 154 { FLOPPY_DRIVE_TYPE_120, 9, 40, 0, FDRIVE_RATE_300K, }, 155 { FLOPPY_DRIVE_TYPE_120, 10, 41, 1, FDRIVE_RATE_300K, }, 156 { FLOPPY_DRIVE_TYPE_120, 10, 42, 1, FDRIVE_RATE_300K, }, 157 /* 320 kB 5"1/4 floppy disks */ 158 { FLOPPY_DRIVE_TYPE_120, 8, 40, 1, FDRIVE_RATE_250K, }, 159 { FLOPPY_DRIVE_TYPE_120, 8, 40, 0, FDRIVE_RATE_250K, }, 160 /* 360 kB must match 5"1/4 better than 3"1/2... */ 161 { FLOPPY_DRIVE_TYPE_144, 9, 80, 0, FDRIVE_RATE_250K, }, /* 3.5" 720 */ 162 /* end */ 163 { FLOPPY_DRIVE_TYPE_NONE, -1, -1, 0, 0, }, 164 }; 165 166 static FDriveSize drive_size(FloppyDriveType drive) 167 { 168 switch (drive) { 169 case FLOPPY_DRIVE_TYPE_120: 170 return FDRIVE_SIZE_525; 171 case FLOPPY_DRIVE_TYPE_144: 172 case FLOPPY_DRIVE_TYPE_288: 173 return FDRIVE_SIZE_350; 174 default: 175 return FDRIVE_SIZE_UNKNOWN; 176 } 177 } 178 179 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv) 180 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive)) 181 182 /* Will always be a fixed parameter for us */ 183 #define FD_SECTOR_LEN 512 184 #define FD_SECTOR_SC 2 /* Sector size code */ 185 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */ 186 187 /* Floppy disk drive emulation */ 188 typedef enum FDiskFlags { 189 FDISK_DBL_SIDES = 0x01, 190 } FDiskFlags; 191 192 struct FDrive { 193 FDCtrl *fdctrl; 194 BlockBackend *blk; 195 BlockConf *conf; 196 /* Drive status */ 197 FloppyDriveType drive; /* CMOS drive type */ 198 uint8_t perpendicular; /* 2.88 MB access mode */ 199 /* Position */ 200 uint8_t head; 201 uint8_t track; 202 uint8_t sect; 203 /* Media */ 204 FloppyDriveType disk; /* Current disk type */ 205 FDiskFlags flags; 206 uint8_t last_sect; /* Nb sector per track */ 207 uint8_t max_track; /* Nb of tracks */ 208 uint16_t bps; /* Bytes per sector */ 209 uint8_t ro; /* Is read-only */ 210 uint8_t media_changed; /* Is media changed */ 211 uint8_t media_rate; /* Data rate of medium */ 212 213 bool media_validated; /* Have we validated the media? */ 214 }; 215 216 217 static FloppyDriveType get_fallback_drive_type(FDrive *drv); 218 219 /* Hack: FD_SEEK is expected to work on empty drives. However, QEMU 220 * currently goes through some pains to keep seeks within the bounds 221 * established by last_sect and max_track. Correcting this is difficult, 222 * as refactoring FDC code tends to expose nasty bugs in the Linux kernel. 223 * 224 * For now: allow empty drives to have large bounds so we can seek around, 225 * with the understanding that when a diskette is inserted, the bounds will 226 * properly tighten to match the geometry of that inserted medium. 227 */ 228 static void fd_empty_seek_hack(FDrive *drv) 229 { 230 drv->last_sect = 0xFF; 231 drv->max_track = 0xFF; 232 } 233 234 static void fd_init(FDrive *drv) 235 { 236 /* Drive */ 237 drv->perpendicular = 0; 238 /* Disk */ 239 drv->disk = FLOPPY_DRIVE_TYPE_NONE; 240 drv->last_sect = 0; 241 drv->max_track = 0; 242 drv->ro = true; 243 drv->media_changed = 1; 244 } 245 246 #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1) 247 248 static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect, 249 uint8_t last_sect, uint8_t num_sides) 250 { 251 return (((track * num_sides) + head) * last_sect) + sect - 1; 252 } 253 254 /* Returns current position, in sectors, for given drive */ 255 static int fd_sector(FDrive *drv) 256 { 257 return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect, 258 NUM_SIDES(drv)); 259 } 260 261 /* Returns current position, in bytes, for given drive */ 262 static int fd_offset(FDrive *drv) 263 { 264 g_assert(fd_sector(drv) < INT_MAX >> BDRV_SECTOR_BITS); 265 return fd_sector(drv) << BDRV_SECTOR_BITS; 266 } 267 268 /* Seek to a new position: 269 * returns 0 if already on right track 270 * returns 1 if track changed 271 * returns 2 if track is invalid 272 * returns 3 if sector is invalid 273 * returns 4 if seek is disabled 274 */ 275 static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect, 276 int enable_seek) 277 { 278 uint32_t sector; 279 int ret; 280 281 if (track > drv->max_track || 282 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) { 283 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n", 284 head, track, sect, 1, 285 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, 286 drv->max_track, drv->last_sect); 287 return 2; 288 } 289 if (sect > drv->last_sect) { 290 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n", 291 head, track, sect, 1, 292 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, 293 drv->max_track, drv->last_sect); 294 return 3; 295 } 296 sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv)); 297 ret = 0; 298 if (sector != fd_sector(drv)) { 299 #if 0 300 if (!enable_seek) { 301 FLOPPY_DPRINTF("error: no implicit seek %d %02x %02x" 302 " (max=%d %02x %02x)\n", 303 head, track, sect, 1, drv->max_track, 304 drv->last_sect); 305 return 4; 306 } 307 #endif 308 drv->head = head; 309 if (drv->track != track) { 310 if (drv->blk != NULL && blk_is_inserted(drv->blk)) { 311 drv->media_changed = 0; 312 } 313 ret = 1; 314 } 315 drv->track = track; 316 drv->sect = sect; 317 } 318 319 if (drv->blk == NULL || !blk_is_inserted(drv->blk)) { 320 ret = 2; 321 } 322 323 return ret; 324 } 325 326 /* Set drive back to track 0 */ 327 static void fd_recalibrate(FDrive *drv) 328 { 329 FLOPPY_DPRINTF("recalibrate\n"); 330 fd_seek(drv, 0, 0, 1, 1); 331 } 332 333 /** 334 * Determine geometry based on inserted diskette. 335 * Will not operate on an empty drive. 336 * 337 * @return: 0 on success, -1 if the drive is empty. 338 */ 339 static int pick_geometry(FDrive *drv) 340 { 341 BlockBackend *blk = drv->blk; 342 const FDFormat *parse; 343 uint64_t nb_sectors, size; 344 int i; 345 int match, size_match, type_match; 346 bool magic = drv->drive == FLOPPY_DRIVE_TYPE_AUTO; 347 348 /* We can only pick a geometry if we have a diskette. */ 349 if (!drv->blk || !blk_is_inserted(drv->blk) || 350 drv->drive == FLOPPY_DRIVE_TYPE_NONE) 351 { 352 return -1; 353 } 354 355 /* We need to determine the likely geometry of the inserted medium. 356 * In order of preference, we look for: 357 * (1) The same drive type and number of sectors, 358 * (2) The same diskette size and number of sectors, 359 * (3) The same drive type. 360 * 361 * In all cases, matches that occur higher in the drive table will take 362 * precedence over matches that occur later in the table. 363 */ 364 blk_get_geometry(blk, &nb_sectors); 365 match = size_match = type_match = -1; 366 for (i = 0; ; i++) { 367 parse = &fd_formats[i]; 368 if (parse->drive == FLOPPY_DRIVE_TYPE_NONE) { 369 break; 370 } 371 size = (parse->max_head + 1) * parse->max_track * parse->last_sect; 372 if (nb_sectors == size) { 373 if (magic || parse->drive == drv->drive) { 374 /* (1) perfect match -- nb_sectors and drive type */ 375 goto out; 376 } else if (drive_size(parse->drive) == drive_size(drv->drive)) { 377 /* (2) size match -- nb_sectors and physical medium size */ 378 match = (match == -1) ? i : match; 379 } else { 380 /* This is suspicious -- Did the user misconfigure? */ 381 size_match = (size_match == -1) ? i : size_match; 382 } 383 } else if (type_match == -1) { 384 if ((parse->drive == drv->drive) || 385 (magic && (parse->drive == get_fallback_drive_type(drv)))) { 386 /* (3) type match -- nb_sectors mismatch, but matches the type 387 * specified explicitly by the user, or matches the fallback 388 * default type when using the drive autodetect mechanism */ 389 type_match = i; 390 } 391 } 392 } 393 394 /* No exact match found */ 395 if (match == -1) { 396 if (size_match != -1) { 397 parse = &fd_formats[size_match]; 398 FLOPPY_DPRINTF("User requested floppy drive type '%s', " 399 "but inserted medium appears to be a " 400 "%"PRId64" sector '%s' type\n", 401 FloppyDriveType_str(drv->drive), 402 nb_sectors, 403 FloppyDriveType_str(parse->drive)); 404 } 405 assert(type_match != -1 && "misconfigured fd_format"); 406 match = type_match; 407 } 408 parse = &(fd_formats[match]); 409 410 out: 411 if (parse->max_head == 0) { 412 drv->flags &= ~FDISK_DBL_SIDES; 413 } else { 414 drv->flags |= FDISK_DBL_SIDES; 415 } 416 drv->max_track = parse->max_track; 417 drv->last_sect = parse->last_sect; 418 drv->disk = parse->drive; 419 drv->media_rate = parse->rate; 420 return 0; 421 } 422 423 static void pick_drive_type(FDrive *drv) 424 { 425 if (drv->drive != FLOPPY_DRIVE_TYPE_AUTO) { 426 return; 427 } 428 429 if (pick_geometry(drv) == 0) { 430 drv->drive = drv->disk; 431 } else { 432 drv->drive = get_fallback_drive_type(drv); 433 } 434 435 g_assert(drv->drive != FLOPPY_DRIVE_TYPE_AUTO); 436 } 437 438 /* Revalidate a disk drive after a disk change */ 439 static void fd_revalidate(FDrive *drv) 440 { 441 int rc; 442 443 FLOPPY_DPRINTF("revalidate\n"); 444 if (drv->blk != NULL) { 445 drv->ro = blk_is_read_only(drv->blk); 446 if (!blk_is_inserted(drv->blk)) { 447 FLOPPY_DPRINTF("No disk in drive\n"); 448 drv->disk = FLOPPY_DRIVE_TYPE_NONE; 449 fd_empty_seek_hack(drv); 450 } else if (!drv->media_validated) { 451 rc = pick_geometry(drv); 452 if (rc) { 453 FLOPPY_DPRINTF("Could not validate floppy drive media"); 454 } else { 455 drv->media_validated = true; 456 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", 457 (drv->flags & FDISK_DBL_SIDES) ? 2 : 1, 458 drv->max_track, drv->last_sect, 459 drv->ro ? "ro" : "rw"); 460 } 461 } 462 } else { 463 FLOPPY_DPRINTF("No drive connected\n"); 464 drv->last_sect = 0; 465 drv->max_track = 0; 466 drv->flags &= ~FDISK_DBL_SIDES; 467 drv->drive = FLOPPY_DRIVE_TYPE_NONE; 468 drv->disk = FLOPPY_DRIVE_TYPE_NONE; 469 } 470 } 471 472 static void fd_change_cb(void *opaque, bool load, Error **errp) 473 { 474 FDrive *drive = opaque; 475 476 if (!load) { 477 blk_set_perm(drive->blk, 0, BLK_PERM_ALL, &error_abort); 478 } else { 479 if (!blkconf_apply_backend_options(drive->conf, 480 blk_is_read_only(drive->blk), false, 481 errp)) { 482 return; 483 } 484 } 485 486 drive->media_changed = 1; 487 drive->media_validated = false; 488 fd_revalidate(drive); 489 } 490 491 static const BlockDevOps fd_block_ops = { 492 .change_media_cb = fd_change_cb, 493 }; 494 495 496 #define TYPE_FLOPPY_DRIVE "floppy" 497 #define FLOPPY_DRIVE(obj) \ 498 OBJECT_CHECK(FloppyDrive, (obj), TYPE_FLOPPY_DRIVE) 499 500 typedef struct FloppyDrive { 501 DeviceState qdev; 502 uint32_t unit; 503 BlockConf conf; 504 FloppyDriveType type; 505 } FloppyDrive; 506 507 static Property floppy_drive_properties[] = { 508 DEFINE_PROP_UINT32("unit", FloppyDrive, unit, -1), 509 DEFINE_BLOCK_PROPERTIES(FloppyDrive, conf), 510 DEFINE_PROP_SIGNED("drive-type", FloppyDrive, type, 511 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 512 FloppyDriveType), 513 DEFINE_PROP_END_OF_LIST(), 514 }; 515 516 static void floppy_drive_realize(DeviceState *qdev, Error **errp) 517 { 518 FloppyDrive *dev = FLOPPY_DRIVE(qdev); 519 FloppyBus *bus = FLOPPY_BUS(qdev->parent_bus); 520 FDrive *drive; 521 bool read_only; 522 int ret; 523 524 if (dev->unit == -1) { 525 for (dev->unit = 0; dev->unit < MAX_FD; dev->unit++) { 526 drive = get_drv(bus->fdc, dev->unit); 527 if (!drive->blk) { 528 break; 529 } 530 } 531 } 532 533 if (dev->unit >= MAX_FD) { 534 error_setg(errp, "Can't create floppy unit %d, bus supports " 535 "only %d units", dev->unit, MAX_FD); 536 return; 537 } 538 539 drive = get_drv(bus->fdc, dev->unit); 540 if (drive->blk) { 541 error_setg(errp, "Floppy unit %d is in use", dev->unit); 542 return; 543 } 544 545 if (!dev->conf.blk) { 546 /* Anonymous BlockBackend for an empty drive */ 547 dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); 548 ret = blk_attach_dev(dev->conf.blk, qdev); 549 assert(ret == 0); 550 551 /* Don't take write permissions on an empty drive to allow attaching a 552 * read-only node later */ 553 read_only = true; 554 } else { 555 read_only = !blk_bs(dev->conf.blk) || blk_is_read_only(dev->conf.blk); 556 } 557 558 if (!blkconf_blocksizes(&dev->conf, errp)) { 559 return; 560 } 561 562 if (dev->conf.logical_block_size != 512 || 563 dev->conf.physical_block_size != 512) 564 { 565 error_setg(errp, "Physical and logical block size must " 566 "be 512 for floppy"); 567 return; 568 } 569 570 /* rerror/werror aren't supported by fdc and therefore not even registered 571 * with qdev. So set the defaults manually before they are used in 572 * blkconf_apply_backend_options(). */ 573 dev->conf.rerror = BLOCKDEV_ON_ERROR_AUTO; 574 dev->conf.werror = BLOCKDEV_ON_ERROR_AUTO; 575 576 if (!blkconf_apply_backend_options(&dev->conf, read_only, false, errp)) { 577 return; 578 } 579 580 /* 'enospc' is the default for -drive, 'report' is what blk_new() gives us 581 * for empty drives. */ 582 if (blk_get_on_error(dev->conf.blk, 0) != BLOCKDEV_ON_ERROR_ENOSPC && 583 blk_get_on_error(dev->conf.blk, 0) != BLOCKDEV_ON_ERROR_REPORT) { 584 error_setg(errp, "fdc doesn't support drive option werror"); 585 return; 586 } 587 if (blk_get_on_error(dev->conf.blk, 1) != BLOCKDEV_ON_ERROR_REPORT) { 588 error_setg(errp, "fdc doesn't support drive option rerror"); 589 return; 590 } 591 592 drive->conf = &dev->conf; 593 drive->blk = dev->conf.blk; 594 drive->fdctrl = bus->fdc; 595 596 fd_init(drive); 597 blk_set_dev_ops(drive->blk, &fd_block_ops, drive); 598 599 /* Keep 'type' qdev property and FDrive->drive in sync */ 600 drive->drive = dev->type; 601 pick_drive_type(drive); 602 dev->type = drive->drive; 603 604 fd_revalidate(drive); 605 } 606 607 static void floppy_drive_class_init(ObjectClass *klass, void *data) 608 { 609 DeviceClass *k = DEVICE_CLASS(klass); 610 k->realize = floppy_drive_realize; 611 set_bit(DEVICE_CATEGORY_STORAGE, k->categories); 612 k->bus_type = TYPE_FLOPPY_BUS; 613 device_class_set_props(k, floppy_drive_properties); 614 k->desc = "virtual floppy drive"; 615 } 616 617 static const TypeInfo floppy_drive_info = { 618 .name = TYPE_FLOPPY_DRIVE, 619 .parent = TYPE_DEVICE, 620 .instance_size = sizeof(FloppyDrive), 621 .class_init = floppy_drive_class_init, 622 }; 623 624 /********************************************************/ 625 /* Intel 82078 floppy disk controller emulation */ 626 627 static void fdctrl_reset(FDCtrl *fdctrl, int do_irq); 628 static void fdctrl_to_command_phase(FDCtrl *fdctrl); 629 static int fdctrl_transfer_handler (void *opaque, int nchan, 630 int dma_pos, int dma_len); 631 static void fdctrl_raise_irq(FDCtrl *fdctrl); 632 static FDrive *get_cur_drv(FDCtrl *fdctrl); 633 634 static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl); 635 static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl); 636 static uint32_t fdctrl_read_dor(FDCtrl *fdctrl); 637 static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value); 638 static uint32_t fdctrl_read_tape(FDCtrl *fdctrl); 639 static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value); 640 static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl); 641 static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value); 642 static uint32_t fdctrl_read_data(FDCtrl *fdctrl); 643 static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value); 644 static uint32_t fdctrl_read_dir(FDCtrl *fdctrl); 645 static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value); 646 647 enum { 648 FD_DIR_WRITE = 0, 649 FD_DIR_READ = 1, 650 FD_DIR_SCANE = 2, 651 FD_DIR_SCANL = 3, 652 FD_DIR_SCANH = 4, 653 FD_DIR_VERIFY = 5, 654 }; 655 656 enum { 657 FD_STATE_MULTI = 0x01, /* multi track flag */ 658 FD_STATE_FORMAT = 0x02, /* format flag */ 659 }; 660 661 enum { 662 FD_REG_SRA = 0x00, 663 FD_REG_SRB = 0x01, 664 FD_REG_DOR = 0x02, 665 FD_REG_TDR = 0x03, 666 FD_REG_MSR = 0x04, 667 FD_REG_DSR = 0x04, 668 FD_REG_FIFO = 0x05, 669 FD_REG_DIR = 0x07, 670 FD_REG_CCR = 0x07, 671 }; 672 673 enum { 674 FD_CMD_READ_TRACK = 0x02, 675 FD_CMD_SPECIFY = 0x03, 676 FD_CMD_SENSE_DRIVE_STATUS = 0x04, 677 FD_CMD_WRITE = 0x05, 678 FD_CMD_READ = 0x06, 679 FD_CMD_RECALIBRATE = 0x07, 680 FD_CMD_SENSE_INTERRUPT_STATUS = 0x08, 681 FD_CMD_WRITE_DELETED = 0x09, 682 FD_CMD_READ_ID = 0x0a, 683 FD_CMD_READ_DELETED = 0x0c, 684 FD_CMD_FORMAT_TRACK = 0x0d, 685 FD_CMD_DUMPREG = 0x0e, 686 FD_CMD_SEEK = 0x0f, 687 FD_CMD_VERSION = 0x10, 688 FD_CMD_SCAN_EQUAL = 0x11, 689 FD_CMD_PERPENDICULAR_MODE = 0x12, 690 FD_CMD_CONFIGURE = 0x13, 691 FD_CMD_LOCK = 0x14, 692 FD_CMD_VERIFY = 0x16, 693 FD_CMD_POWERDOWN_MODE = 0x17, 694 FD_CMD_PART_ID = 0x18, 695 FD_CMD_SCAN_LOW_OR_EQUAL = 0x19, 696 FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d, 697 FD_CMD_SAVE = 0x2e, 698 FD_CMD_OPTION = 0x33, 699 FD_CMD_RESTORE = 0x4e, 700 FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e, 701 FD_CMD_RELATIVE_SEEK_OUT = 0x8f, 702 FD_CMD_FORMAT_AND_WRITE = 0xcd, 703 FD_CMD_RELATIVE_SEEK_IN = 0xcf, 704 }; 705 706 enum { 707 FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */ 708 FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */ 709 FD_CONFIG_POLL = 0x10, /* Poll enabled */ 710 FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */ 711 FD_CONFIG_EIS = 0x40, /* No implied seeks */ 712 }; 713 714 enum { 715 FD_SR0_DS0 = 0x01, 716 FD_SR0_DS1 = 0x02, 717 FD_SR0_HEAD = 0x04, 718 FD_SR0_EQPMT = 0x10, 719 FD_SR0_SEEK = 0x20, 720 FD_SR0_ABNTERM = 0x40, 721 FD_SR0_INVCMD = 0x80, 722 FD_SR0_RDYCHG = 0xc0, 723 }; 724 725 enum { 726 FD_SR1_MA = 0x01, /* Missing address mark */ 727 FD_SR1_NW = 0x02, /* Not writable */ 728 FD_SR1_EC = 0x80, /* End of cylinder */ 729 }; 730 731 enum { 732 FD_SR2_SNS = 0x04, /* Scan not satisfied */ 733 FD_SR2_SEH = 0x08, /* Scan equal hit */ 734 }; 735 736 enum { 737 FD_SRA_DIR = 0x01, 738 FD_SRA_nWP = 0x02, 739 FD_SRA_nINDX = 0x04, 740 FD_SRA_HDSEL = 0x08, 741 FD_SRA_nTRK0 = 0x10, 742 FD_SRA_STEP = 0x20, 743 FD_SRA_nDRV2 = 0x40, 744 FD_SRA_INTPEND = 0x80, 745 }; 746 747 enum { 748 FD_SRB_MTR0 = 0x01, 749 FD_SRB_MTR1 = 0x02, 750 FD_SRB_WGATE = 0x04, 751 FD_SRB_RDATA = 0x08, 752 FD_SRB_WDATA = 0x10, 753 FD_SRB_DR0 = 0x20, 754 }; 755 756 enum { 757 #if MAX_FD == 4 758 FD_DOR_SELMASK = 0x03, 759 #else 760 FD_DOR_SELMASK = 0x01, 761 #endif 762 FD_DOR_nRESET = 0x04, 763 FD_DOR_DMAEN = 0x08, 764 FD_DOR_MOTEN0 = 0x10, 765 FD_DOR_MOTEN1 = 0x20, 766 FD_DOR_MOTEN2 = 0x40, 767 FD_DOR_MOTEN3 = 0x80, 768 }; 769 770 enum { 771 #if MAX_FD == 4 772 FD_TDR_BOOTSEL = 0x0c, 773 #else 774 FD_TDR_BOOTSEL = 0x04, 775 #endif 776 }; 777 778 enum { 779 FD_DSR_DRATEMASK= 0x03, 780 FD_DSR_PWRDOWN = 0x40, 781 FD_DSR_SWRESET = 0x80, 782 }; 783 784 enum { 785 FD_MSR_DRV0BUSY = 0x01, 786 FD_MSR_DRV1BUSY = 0x02, 787 FD_MSR_DRV2BUSY = 0x04, 788 FD_MSR_DRV3BUSY = 0x08, 789 FD_MSR_CMDBUSY = 0x10, 790 FD_MSR_NONDMA = 0x20, 791 FD_MSR_DIO = 0x40, 792 FD_MSR_RQM = 0x80, 793 }; 794 795 enum { 796 FD_DIR_DSKCHG = 0x80, 797 }; 798 799 /* 800 * See chapter 5.0 "Controller phases" of the spec: 801 * 802 * Command phase: 803 * The host writes a command and its parameters into the FIFO. The command 804 * phase is completed when all parameters for the command have been supplied, 805 * and execution phase is entered. 806 * 807 * Execution phase: 808 * Data transfers, either DMA or non-DMA. For non-DMA transfers, the FIFO 809 * contains the payload now, otherwise it's unused. When all bytes of the 810 * required data have been transferred, the state is switched to either result 811 * phase (if the command produces status bytes) or directly back into the 812 * command phase for the next command. 813 * 814 * Result phase: 815 * The host reads out the FIFO, which contains one or more result bytes now. 816 */ 817 enum { 818 /* Only for migration: reconstruct phase from registers like qemu 2.3 */ 819 FD_PHASE_RECONSTRUCT = 0, 820 821 FD_PHASE_COMMAND = 1, 822 FD_PHASE_EXECUTION = 2, 823 FD_PHASE_RESULT = 3, 824 }; 825 826 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI) 827 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT) 828 829 struct FDCtrl { 830 MemoryRegion iomem; 831 qemu_irq irq; 832 /* Controller state */ 833 QEMUTimer *result_timer; 834 int dma_chann; 835 uint8_t phase; 836 IsaDma *dma; 837 /* Controller's identification */ 838 uint8_t version; 839 /* HW */ 840 uint8_t sra; 841 uint8_t srb; 842 uint8_t dor; 843 uint8_t dor_vmstate; /* only used as temp during vmstate */ 844 uint8_t tdr; 845 uint8_t dsr; 846 uint8_t msr; 847 uint8_t cur_drv; 848 uint8_t status0; 849 uint8_t status1; 850 uint8_t status2; 851 /* Command FIFO */ 852 uint8_t *fifo; 853 int32_t fifo_size; 854 uint32_t data_pos; 855 uint32_t data_len; 856 uint8_t data_state; 857 uint8_t data_dir; 858 uint8_t eot; /* last wanted sector */ 859 /* States kept only to be returned back */ 860 /* precompensation */ 861 uint8_t precomp_trk; 862 uint8_t config; 863 uint8_t lock; 864 /* Power down config (also with status regB access mode */ 865 uint8_t pwrd; 866 /* Floppy drives */ 867 FloppyBus bus; 868 uint8_t num_floppies; 869 FDrive drives[MAX_FD]; 870 struct { 871 BlockBackend *blk; 872 FloppyDriveType type; 873 } qdev_for_drives[MAX_FD]; 874 int reset_sensei; 875 uint32_t check_media_rate; 876 FloppyDriveType fallback; /* type=auto failure fallback */ 877 /* Timers state */ 878 uint8_t timer0; 879 uint8_t timer1; 880 PortioList portio_list; 881 }; 882 883 static FloppyDriveType get_fallback_drive_type(FDrive *drv) 884 { 885 return drv->fdctrl->fallback; 886 } 887 888 #define TYPE_SYSBUS_FDC "base-sysbus-fdc" 889 #define SYSBUS_FDC(obj) OBJECT_CHECK(FDCtrlSysBus, (obj), TYPE_SYSBUS_FDC) 890 891 typedef struct FDCtrlSysBus { 892 /*< private >*/ 893 SysBusDevice parent_obj; 894 /*< public >*/ 895 896 struct FDCtrl state; 897 } FDCtrlSysBus; 898 899 #define ISA_FDC(obj) OBJECT_CHECK(FDCtrlISABus, (obj), TYPE_ISA_FDC) 900 901 typedef struct FDCtrlISABus { 902 ISADevice parent_obj; 903 904 uint32_t iobase; 905 uint32_t irq; 906 uint32_t dma; 907 struct FDCtrl state; 908 int32_t bootindexA; 909 int32_t bootindexB; 910 } FDCtrlISABus; 911 912 static uint32_t fdctrl_read (void *opaque, uint32_t reg) 913 { 914 FDCtrl *fdctrl = opaque; 915 uint32_t retval; 916 917 reg &= 7; 918 switch (reg) { 919 case FD_REG_SRA: 920 retval = fdctrl_read_statusA(fdctrl); 921 break; 922 case FD_REG_SRB: 923 retval = fdctrl_read_statusB(fdctrl); 924 break; 925 case FD_REG_DOR: 926 retval = fdctrl_read_dor(fdctrl); 927 break; 928 case FD_REG_TDR: 929 retval = fdctrl_read_tape(fdctrl); 930 break; 931 case FD_REG_MSR: 932 retval = fdctrl_read_main_status(fdctrl); 933 break; 934 case FD_REG_FIFO: 935 retval = fdctrl_read_data(fdctrl); 936 break; 937 case FD_REG_DIR: 938 retval = fdctrl_read_dir(fdctrl); 939 break; 940 default: 941 retval = (uint32_t)(-1); 942 break; 943 } 944 trace_fdc_ioport_read(reg, retval); 945 946 return retval; 947 } 948 949 static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value) 950 { 951 FDCtrl *fdctrl = opaque; 952 953 reg &= 7; 954 trace_fdc_ioport_write(reg, value); 955 switch (reg) { 956 case FD_REG_DOR: 957 fdctrl_write_dor(fdctrl, value); 958 break; 959 case FD_REG_TDR: 960 fdctrl_write_tape(fdctrl, value); 961 break; 962 case FD_REG_DSR: 963 fdctrl_write_rate(fdctrl, value); 964 break; 965 case FD_REG_FIFO: 966 fdctrl_write_data(fdctrl, value); 967 break; 968 case FD_REG_CCR: 969 fdctrl_write_ccr(fdctrl, value); 970 break; 971 default: 972 break; 973 } 974 } 975 976 static uint64_t fdctrl_read_mem (void *opaque, hwaddr reg, 977 unsigned ize) 978 { 979 return fdctrl_read(opaque, (uint32_t)reg); 980 } 981 982 static void fdctrl_write_mem (void *opaque, hwaddr reg, 983 uint64_t value, unsigned size) 984 { 985 fdctrl_write(opaque, (uint32_t)reg, value); 986 } 987 988 static const MemoryRegionOps fdctrl_mem_ops = { 989 .read = fdctrl_read_mem, 990 .write = fdctrl_write_mem, 991 .endianness = DEVICE_NATIVE_ENDIAN, 992 }; 993 994 static const MemoryRegionOps fdctrl_mem_strict_ops = { 995 .read = fdctrl_read_mem, 996 .write = fdctrl_write_mem, 997 .endianness = DEVICE_NATIVE_ENDIAN, 998 .valid = { 999 .min_access_size = 1, 1000 .max_access_size = 1, 1001 }, 1002 }; 1003 1004 static bool fdrive_media_changed_needed(void *opaque) 1005 { 1006 FDrive *drive = opaque; 1007 1008 return (drive->blk != NULL && drive->media_changed != 1); 1009 } 1010 1011 static const VMStateDescription vmstate_fdrive_media_changed = { 1012 .name = "fdrive/media_changed", 1013 .version_id = 1, 1014 .minimum_version_id = 1, 1015 .needed = fdrive_media_changed_needed, 1016 .fields = (VMStateField[]) { 1017 VMSTATE_UINT8(media_changed, FDrive), 1018 VMSTATE_END_OF_LIST() 1019 } 1020 }; 1021 1022 static bool fdrive_media_rate_needed(void *opaque) 1023 { 1024 FDrive *drive = opaque; 1025 1026 return drive->fdctrl->check_media_rate; 1027 } 1028 1029 static const VMStateDescription vmstate_fdrive_media_rate = { 1030 .name = "fdrive/media_rate", 1031 .version_id = 1, 1032 .minimum_version_id = 1, 1033 .needed = fdrive_media_rate_needed, 1034 .fields = (VMStateField[]) { 1035 VMSTATE_UINT8(media_rate, FDrive), 1036 VMSTATE_END_OF_LIST() 1037 } 1038 }; 1039 1040 static bool fdrive_perpendicular_needed(void *opaque) 1041 { 1042 FDrive *drive = opaque; 1043 1044 return drive->perpendicular != 0; 1045 } 1046 1047 static const VMStateDescription vmstate_fdrive_perpendicular = { 1048 .name = "fdrive/perpendicular", 1049 .version_id = 1, 1050 .minimum_version_id = 1, 1051 .needed = fdrive_perpendicular_needed, 1052 .fields = (VMStateField[]) { 1053 VMSTATE_UINT8(perpendicular, FDrive), 1054 VMSTATE_END_OF_LIST() 1055 } 1056 }; 1057 1058 static int fdrive_post_load(void *opaque, int version_id) 1059 { 1060 fd_revalidate(opaque); 1061 return 0; 1062 } 1063 1064 static const VMStateDescription vmstate_fdrive = { 1065 .name = "fdrive", 1066 .version_id = 1, 1067 .minimum_version_id = 1, 1068 .post_load = fdrive_post_load, 1069 .fields = (VMStateField[]) { 1070 VMSTATE_UINT8(head, FDrive), 1071 VMSTATE_UINT8(track, FDrive), 1072 VMSTATE_UINT8(sect, FDrive), 1073 VMSTATE_END_OF_LIST() 1074 }, 1075 .subsections = (const VMStateDescription*[]) { 1076 &vmstate_fdrive_media_changed, 1077 &vmstate_fdrive_media_rate, 1078 &vmstate_fdrive_perpendicular, 1079 NULL 1080 } 1081 }; 1082 1083 /* 1084 * Reconstructs the phase from register values according to the logic that was 1085 * implemented in qemu 2.3. This is the default value that is used if the phase 1086 * subsection is not present on migration. 1087 * 1088 * Don't change this function to reflect newer qemu versions, it is part of 1089 * the migration ABI. 1090 */ 1091 static int reconstruct_phase(FDCtrl *fdctrl) 1092 { 1093 if (fdctrl->msr & FD_MSR_NONDMA) { 1094 return FD_PHASE_EXECUTION; 1095 } else if ((fdctrl->msr & FD_MSR_RQM) == 0) { 1096 /* qemu 2.3 disabled RQM only during DMA transfers */ 1097 return FD_PHASE_EXECUTION; 1098 } else if (fdctrl->msr & FD_MSR_DIO) { 1099 return FD_PHASE_RESULT; 1100 } else { 1101 return FD_PHASE_COMMAND; 1102 } 1103 } 1104 1105 static int fdc_pre_save(void *opaque) 1106 { 1107 FDCtrl *s = opaque; 1108 1109 s->dor_vmstate = s->dor | GET_CUR_DRV(s); 1110 1111 return 0; 1112 } 1113 1114 static int fdc_pre_load(void *opaque) 1115 { 1116 FDCtrl *s = opaque; 1117 s->phase = FD_PHASE_RECONSTRUCT; 1118 return 0; 1119 } 1120 1121 static int fdc_post_load(void *opaque, int version_id) 1122 { 1123 FDCtrl *s = opaque; 1124 1125 SET_CUR_DRV(s, s->dor_vmstate & FD_DOR_SELMASK); 1126 s->dor = s->dor_vmstate & ~FD_DOR_SELMASK; 1127 1128 if (s->phase == FD_PHASE_RECONSTRUCT) { 1129 s->phase = reconstruct_phase(s); 1130 } 1131 1132 return 0; 1133 } 1134 1135 static bool fdc_reset_sensei_needed(void *opaque) 1136 { 1137 FDCtrl *s = opaque; 1138 1139 return s->reset_sensei != 0; 1140 } 1141 1142 static const VMStateDescription vmstate_fdc_reset_sensei = { 1143 .name = "fdc/reset_sensei", 1144 .version_id = 1, 1145 .minimum_version_id = 1, 1146 .needed = fdc_reset_sensei_needed, 1147 .fields = (VMStateField[]) { 1148 VMSTATE_INT32(reset_sensei, FDCtrl), 1149 VMSTATE_END_OF_LIST() 1150 } 1151 }; 1152 1153 static bool fdc_result_timer_needed(void *opaque) 1154 { 1155 FDCtrl *s = opaque; 1156 1157 return timer_pending(s->result_timer); 1158 } 1159 1160 static const VMStateDescription vmstate_fdc_result_timer = { 1161 .name = "fdc/result_timer", 1162 .version_id = 1, 1163 .minimum_version_id = 1, 1164 .needed = fdc_result_timer_needed, 1165 .fields = (VMStateField[]) { 1166 VMSTATE_TIMER_PTR(result_timer, FDCtrl), 1167 VMSTATE_END_OF_LIST() 1168 } 1169 }; 1170 1171 static bool fdc_phase_needed(void *opaque) 1172 { 1173 FDCtrl *fdctrl = opaque; 1174 1175 return reconstruct_phase(fdctrl) != fdctrl->phase; 1176 } 1177 1178 static const VMStateDescription vmstate_fdc_phase = { 1179 .name = "fdc/phase", 1180 .version_id = 1, 1181 .minimum_version_id = 1, 1182 .needed = fdc_phase_needed, 1183 .fields = (VMStateField[]) { 1184 VMSTATE_UINT8(phase, FDCtrl), 1185 VMSTATE_END_OF_LIST() 1186 } 1187 }; 1188 1189 static const VMStateDescription vmstate_fdc = { 1190 .name = "fdc", 1191 .version_id = 2, 1192 .minimum_version_id = 2, 1193 .pre_save = fdc_pre_save, 1194 .pre_load = fdc_pre_load, 1195 .post_load = fdc_post_load, 1196 .fields = (VMStateField[]) { 1197 /* Controller State */ 1198 VMSTATE_UINT8(sra, FDCtrl), 1199 VMSTATE_UINT8(srb, FDCtrl), 1200 VMSTATE_UINT8(dor_vmstate, FDCtrl), 1201 VMSTATE_UINT8(tdr, FDCtrl), 1202 VMSTATE_UINT8(dsr, FDCtrl), 1203 VMSTATE_UINT8(msr, FDCtrl), 1204 VMSTATE_UINT8(status0, FDCtrl), 1205 VMSTATE_UINT8(status1, FDCtrl), 1206 VMSTATE_UINT8(status2, FDCtrl), 1207 /* Command FIFO */ 1208 VMSTATE_VARRAY_INT32(fifo, FDCtrl, fifo_size, 0, vmstate_info_uint8, 1209 uint8_t), 1210 VMSTATE_UINT32(data_pos, FDCtrl), 1211 VMSTATE_UINT32(data_len, FDCtrl), 1212 VMSTATE_UINT8(data_state, FDCtrl), 1213 VMSTATE_UINT8(data_dir, FDCtrl), 1214 VMSTATE_UINT8(eot, FDCtrl), 1215 /* States kept only to be returned back */ 1216 VMSTATE_UINT8(timer0, FDCtrl), 1217 VMSTATE_UINT8(timer1, FDCtrl), 1218 VMSTATE_UINT8(precomp_trk, FDCtrl), 1219 VMSTATE_UINT8(config, FDCtrl), 1220 VMSTATE_UINT8(lock, FDCtrl), 1221 VMSTATE_UINT8(pwrd, FDCtrl), 1222 VMSTATE_UINT8_EQUAL(num_floppies, FDCtrl, NULL), 1223 VMSTATE_STRUCT_ARRAY(drives, FDCtrl, MAX_FD, 1, 1224 vmstate_fdrive, FDrive), 1225 VMSTATE_END_OF_LIST() 1226 }, 1227 .subsections = (const VMStateDescription*[]) { 1228 &vmstate_fdc_reset_sensei, 1229 &vmstate_fdc_result_timer, 1230 &vmstate_fdc_phase, 1231 NULL 1232 } 1233 }; 1234 1235 static void fdctrl_external_reset_sysbus(DeviceState *d) 1236 { 1237 FDCtrlSysBus *sys = SYSBUS_FDC(d); 1238 FDCtrl *s = &sys->state; 1239 1240 fdctrl_reset(s, 0); 1241 } 1242 1243 static void fdctrl_external_reset_isa(DeviceState *d) 1244 { 1245 FDCtrlISABus *isa = ISA_FDC(d); 1246 FDCtrl *s = &isa->state; 1247 1248 fdctrl_reset(s, 0); 1249 } 1250 1251 static void fdctrl_handle_tc(void *opaque, int irq, int level) 1252 { 1253 //FDCtrl *s = opaque; 1254 1255 if (level) { 1256 // XXX 1257 FLOPPY_DPRINTF("TC pulsed\n"); 1258 } 1259 } 1260 1261 /* Change IRQ state */ 1262 static void fdctrl_reset_irq(FDCtrl *fdctrl) 1263 { 1264 fdctrl->status0 = 0; 1265 if (!(fdctrl->sra & FD_SRA_INTPEND)) 1266 return; 1267 FLOPPY_DPRINTF("Reset interrupt\n"); 1268 qemu_set_irq(fdctrl->irq, 0); 1269 fdctrl->sra &= ~FD_SRA_INTPEND; 1270 } 1271 1272 static void fdctrl_raise_irq(FDCtrl *fdctrl) 1273 { 1274 if (!(fdctrl->sra & FD_SRA_INTPEND)) { 1275 qemu_set_irq(fdctrl->irq, 1); 1276 fdctrl->sra |= FD_SRA_INTPEND; 1277 } 1278 1279 fdctrl->reset_sensei = 0; 1280 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0); 1281 } 1282 1283 /* Reset controller */ 1284 static void fdctrl_reset(FDCtrl *fdctrl, int do_irq) 1285 { 1286 int i; 1287 1288 FLOPPY_DPRINTF("reset controller\n"); 1289 fdctrl_reset_irq(fdctrl); 1290 /* Initialise controller */ 1291 fdctrl->sra = 0; 1292 fdctrl->srb = 0xc0; 1293 if (!fdctrl->drives[1].blk) { 1294 fdctrl->sra |= FD_SRA_nDRV2; 1295 } 1296 fdctrl->cur_drv = 0; 1297 fdctrl->dor = FD_DOR_nRESET; 1298 fdctrl->dor |= (fdctrl->dma_chann != -1) ? FD_DOR_DMAEN : 0; 1299 fdctrl->msr = FD_MSR_RQM; 1300 fdctrl->reset_sensei = 0; 1301 timer_del(fdctrl->result_timer); 1302 /* FIFO state */ 1303 fdctrl->data_pos = 0; 1304 fdctrl->data_len = 0; 1305 fdctrl->data_state = 0; 1306 fdctrl->data_dir = FD_DIR_WRITE; 1307 for (i = 0; i < MAX_FD; i++) 1308 fd_recalibrate(&fdctrl->drives[i]); 1309 fdctrl_to_command_phase(fdctrl); 1310 if (do_irq) { 1311 fdctrl->status0 |= FD_SR0_RDYCHG; 1312 fdctrl_raise_irq(fdctrl); 1313 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT; 1314 } 1315 } 1316 1317 static inline FDrive *drv0(FDCtrl *fdctrl) 1318 { 1319 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2]; 1320 } 1321 1322 static inline FDrive *drv1(FDCtrl *fdctrl) 1323 { 1324 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2)) 1325 return &fdctrl->drives[1]; 1326 else 1327 return &fdctrl->drives[0]; 1328 } 1329 1330 #if MAX_FD == 4 1331 static inline FDrive *drv2(FDCtrl *fdctrl) 1332 { 1333 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2)) 1334 return &fdctrl->drives[2]; 1335 else 1336 return &fdctrl->drives[1]; 1337 } 1338 1339 static inline FDrive *drv3(FDCtrl *fdctrl) 1340 { 1341 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2)) 1342 return &fdctrl->drives[3]; 1343 else 1344 return &fdctrl->drives[2]; 1345 } 1346 #endif 1347 1348 static FDrive *get_drv(FDCtrl *fdctrl, int unit) 1349 { 1350 switch (unit) { 1351 case 0: return drv0(fdctrl); 1352 case 1: return drv1(fdctrl); 1353 #if MAX_FD == 4 1354 case 2: return drv2(fdctrl); 1355 case 3: return drv3(fdctrl); 1356 #endif 1357 default: return NULL; 1358 } 1359 } 1360 1361 static FDrive *get_cur_drv(FDCtrl *fdctrl) 1362 { 1363 return get_drv(fdctrl, fdctrl->cur_drv); 1364 } 1365 1366 /* Status A register : 0x00 (read-only) */ 1367 static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl) 1368 { 1369 uint32_t retval = fdctrl->sra; 1370 1371 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval); 1372 1373 return retval; 1374 } 1375 1376 /* Status B register : 0x01 (read-only) */ 1377 static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl) 1378 { 1379 uint32_t retval = fdctrl->srb; 1380 1381 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval); 1382 1383 return retval; 1384 } 1385 1386 /* Digital output register : 0x02 */ 1387 static uint32_t fdctrl_read_dor(FDCtrl *fdctrl) 1388 { 1389 uint32_t retval = fdctrl->dor; 1390 1391 /* Selected drive */ 1392 retval |= fdctrl->cur_drv; 1393 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval); 1394 1395 return retval; 1396 } 1397 1398 static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value) 1399 { 1400 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value); 1401 1402 /* Motors */ 1403 if (value & FD_DOR_MOTEN0) 1404 fdctrl->srb |= FD_SRB_MTR0; 1405 else 1406 fdctrl->srb &= ~FD_SRB_MTR0; 1407 if (value & FD_DOR_MOTEN1) 1408 fdctrl->srb |= FD_SRB_MTR1; 1409 else 1410 fdctrl->srb &= ~FD_SRB_MTR1; 1411 1412 /* Drive */ 1413 if (value & 1) 1414 fdctrl->srb |= FD_SRB_DR0; 1415 else 1416 fdctrl->srb &= ~FD_SRB_DR0; 1417 1418 /* Reset */ 1419 if (!(value & FD_DOR_nRESET)) { 1420 if (fdctrl->dor & FD_DOR_nRESET) { 1421 FLOPPY_DPRINTF("controller enter RESET state\n"); 1422 } 1423 } else { 1424 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1425 FLOPPY_DPRINTF("controller out of RESET state\n"); 1426 fdctrl_reset(fdctrl, 1); 1427 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1428 } 1429 } 1430 /* Selected drive */ 1431 fdctrl->cur_drv = value & FD_DOR_SELMASK; 1432 1433 fdctrl->dor = value; 1434 } 1435 1436 /* Tape drive register : 0x03 */ 1437 static uint32_t fdctrl_read_tape(FDCtrl *fdctrl) 1438 { 1439 uint32_t retval = fdctrl->tdr; 1440 1441 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval); 1442 1443 return retval; 1444 } 1445 1446 static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value) 1447 { 1448 /* Reset mode */ 1449 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1450 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1451 return; 1452 } 1453 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value); 1454 /* Disk boot selection indicator */ 1455 fdctrl->tdr = value & FD_TDR_BOOTSEL; 1456 /* Tape indicators: never allow */ 1457 } 1458 1459 /* Main status register : 0x04 (read) */ 1460 static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl) 1461 { 1462 uint32_t retval = fdctrl->msr; 1463 1464 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1465 fdctrl->dor |= FD_DOR_nRESET; 1466 1467 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval); 1468 1469 return retval; 1470 } 1471 1472 /* Data select rate register : 0x04 (write) */ 1473 static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value) 1474 { 1475 /* Reset mode */ 1476 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1477 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1478 return; 1479 } 1480 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value); 1481 /* Reset: autoclear */ 1482 if (value & FD_DSR_SWRESET) { 1483 fdctrl->dor &= ~FD_DOR_nRESET; 1484 fdctrl_reset(fdctrl, 1); 1485 fdctrl->dor |= FD_DOR_nRESET; 1486 } 1487 if (value & FD_DSR_PWRDOWN) { 1488 fdctrl_reset(fdctrl, 1); 1489 } 1490 fdctrl->dsr = value; 1491 } 1492 1493 /* Configuration control register: 0x07 (write) */ 1494 static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value) 1495 { 1496 /* Reset mode */ 1497 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1498 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1499 return; 1500 } 1501 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value); 1502 1503 /* Only the rate selection bits used in AT mode, and we 1504 * store those in the DSR. 1505 */ 1506 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) | 1507 (value & FD_DSR_DRATEMASK); 1508 } 1509 1510 static int fdctrl_media_changed(FDrive *drv) 1511 { 1512 return drv->media_changed; 1513 } 1514 1515 /* Digital input register : 0x07 (read-only) */ 1516 static uint32_t fdctrl_read_dir(FDCtrl *fdctrl) 1517 { 1518 uint32_t retval = 0; 1519 1520 if (fdctrl_media_changed(get_cur_drv(fdctrl))) { 1521 retval |= FD_DIR_DSKCHG; 1522 } 1523 if (retval != 0) { 1524 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval); 1525 } 1526 1527 return retval; 1528 } 1529 1530 /* Clear the FIFO and update the state for receiving the next command */ 1531 static void fdctrl_to_command_phase(FDCtrl *fdctrl) 1532 { 1533 fdctrl->phase = FD_PHASE_COMMAND; 1534 fdctrl->data_dir = FD_DIR_WRITE; 1535 fdctrl->data_pos = 0; 1536 fdctrl->data_len = 1; /* Accept command byte, adjust for params later */ 1537 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO); 1538 fdctrl->msr |= FD_MSR_RQM; 1539 } 1540 1541 /* Update the state to allow the guest to read out the command status. 1542 * @fifo_len is the number of result bytes to be read out. */ 1543 static void fdctrl_to_result_phase(FDCtrl *fdctrl, int fifo_len) 1544 { 1545 fdctrl->phase = FD_PHASE_RESULT; 1546 fdctrl->data_dir = FD_DIR_READ; 1547 fdctrl->data_len = fifo_len; 1548 fdctrl->data_pos = 0; 1549 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO; 1550 } 1551 1552 /* Set an error: unimplemented/unknown command */ 1553 static void fdctrl_unimplemented(FDCtrl *fdctrl, int direction) 1554 { 1555 qemu_log_mask(LOG_UNIMP, "fdc: unimplemented command 0x%02x\n", 1556 fdctrl->fifo[0]); 1557 fdctrl->fifo[0] = FD_SR0_INVCMD; 1558 fdctrl_to_result_phase(fdctrl, 1); 1559 } 1560 1561 /* Seek to next sector 1562 * returns 0 when end of track reached (for DBL_SIDES on head 1) 1563 * otherwise returns 1 1564 */ 1565 static int fdctrl_seek_to_next_sect(FDCtrl *fdctrl, FDrive *cur_drv) 1566 { 1567 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n", 1568 cur_drv->head, cur_drv->track, cur_drv->sect, 1569 fd_sector(cur_drv)); 1570 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an 1571 error in fact */ 1572 uint8_t new_head = cur_drv->head; 1573 uint8_t new_track = cur_drv->track; 1574 uint8_t new_sect = cur_drv->sect; 1575 1576 int ret = 1; 1577 1578 if (new_sect >= cur_drv->last_sect || 1579 new_sect == fdctrl->eot) { 1580 new_sect = 1; 1581 if (FD_MULTI_TRACK(fdctrl->data_state)) { 1582 if (new_head == 0 && 1583 (cur_drv->flags & FDISK_DBL_SIDES) != 0) { 1584 new_head = 1; 1585 } else { 1586 new_head = 0; 1587 new_track++; 1588 fdctrl->status0 |= FD_SR0_SEEK; 1589 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0) { 1590 ret = 0; 1591 } 1592 } 1593 } else { 1594 fdctrl->status0 |= FD_SR0_SEEK; 1595 new_track++; 1596 ret = 0; 1597 } 1598 if (ret == 1) { 1599 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n", 1600 new_head, new_track, new_sect, fd_sector(cur_drv)); 1601 } 1602 } else { 1603 new_sect++; 1604 } 1605 fd_seek(cur_drv, new_head, new_track, new_sect, 1); 1606 return ret; 1607 } 1608 1609 /* Callback for transfer end (stop or abort) */ 1610 static void fdctrl_stop_transfer(FDCtrl *fdctrl, uint8_t status0, 1611 uint8_t status1, uint8_t status2) 1612 { 1613 FDrive *cur_drv; 1614 cur_drv = get_cur_drv(fdctrl); 1615 1616 fdctrl->status0 &= ~(FD_SR0_DS0 | FD_SR0_DS1 | FD_SR0_HEAD); 1617 fdctrl->status0 |= GET_CUR_DRV(fdctrl); 1618 if (cur_drv->head) { 1619 fdctrl->status0 |= FD_SR0_HEAD; 1620 } 1621 fdctrl->status0 |= status0; 1622 1623 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n", 1624 status0, status1, status2, fdctrl->status0); 1625 fdctrl->fifo[0] = fdctrl->status0; 1626 fdctrl->fifo[1] = status1; 1627 fdctrl->fifo[2] = status2; 1628 fdctrl->fifo[3] = cur_drv->track; 1629 fdctrl->fifo[4] = cur_drv->head; 1630 fdctrl->fifo[5] = cur_drv->sect; 1631 fdctrl->fifo[6] = FD_SECTOR_SC; 1632 fdctrl->data_dir = FD_DIR_READ; 1633 if (fdctrl->dma_chann != -1 && !(fdctrl->msr & FD_MSR_NONDMA)) { 1634 IsaDmaClass *k = ISADMA_GET_CLASS(fdctrl->dma); 1635 k->release_DREQ(fdctrl->dma, fdctrl->dma_chann); 1636 } 1637 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO; 1638 fdctrl->msr &= ~FD_MSR_NONDMA; 1639 1640 fdctrl_to_result_phase(fdctrl, 7); 1641 fdctrl_raise_irq(fdctrl); 1642 } 1643 1644 /* Prepare a data transfer (either DMA or FIFO) */ 1645 static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction) 1646 { 1647 FDrive *cur_drv; 1648 uint8_t kh, kt, ks; 1649 1650 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1651 cur_drv = get_cur_drv(fdctrl); 1652 kt = fdctrl->fifo[2]; 1653 kh = fdctrl->fifo[3]; 1654 ks = fdctrl->fifo[4]; 1655 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n", 1656 GET_CUR_DRV(fdctrl), kh, kt, ks, 1657 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, 1658 NUM_SIDES(cur_drv))); 1659 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) { 1660 case 2: 1661 /* sect too big */ 1662 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1663 fdctrl->fifo[3] = kt; 1664 fdctrl->fifo[4] = kh; 1665 fdctrl->fifo[5] = ks; 1666 return; 1667 case 3: 1668 /* track too big */ 1669 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00); 1670 fdctrl->fifo[3] = kt; 1671 fdctrl->fifo[4] = kh; 1672 fdctrl->fifo[5] = ks; 1673 return; 1674 case 4: 1675 /* No seek enabled */ 1676 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1677 fdctrl->fifo[3] = kt; 1678 fdctrl->fifo[4] = kh; 1679 fdctrl->fifo[5] = ks; 1680 return; 1681 case 1: 1682 fdctrl->status0 |= FD_SR0_SEEK; 1683 break; 1684 default: 1685 break; 1686 } 1687 1688 /* Check the data rate. If the programmed data rate does not match 1689 * the currently inserted medium, the operation has to fail. */ 1690 if (fdctrl->check_media_rate && 1691 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) { 1692 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n", 1693 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate); 1694 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00); 1695 fdctrl->fifo[3] = kt; 1696 fdctrl->fifo[4] = kh; 1697 fdctrl->fifo[5] = ks; 1698 return; 1699 } 1700 1701 /* Set the FIFO state */ 1702 fdctrl->data_dir = direction; 1703 fdctrl->data_pos = 0; 1704 assert(fdctrl->msr & FD_MSR_CMDBUSY); 1705 if (fdctrl->fifo[0] & 0x80) 1706 fdctrl->data_state |= FD_STATE_MULTI; 1707 else 1708 fdctrl->data_state &= ~FD_STATE_MULTI; 1709 if (fdctrl->fifo[5] == 0) { 1710 fdctrl->data_len = fdctrl->fifo[8]; 1711 } else { 1712 int tmp; 1713 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]); 1714 tmp = (fdctrl->fifo[6] - ks + 1); 1715 if (fdctrl->fifo[0] & 0x80) 1716 tmp += fdctrl->fifo[6]; 1717 fdctrl->data_len *= tmp; 1718 } 1719 fdctrl->eot = fdctrl->fifo[6]; 1720 if (fdctrl->dor & FD_DOR_DMAEN) { 1721 /* DMA transfer is enabled. */ 1722 IsaDmaClass *k = ISADMA_GET_CLASS(fdctrl->dma); 1723 1724 FLOPPY_DPRINTF("direction=%d (%d - %d)\n", 1725 direction, (128 << fdctrl->fifo[5]) * 1726 (cur_drv->last_sect - ks + 1), fdctrl->data_len); 1727 1728 /* No access is allowed until DMA transfer has completed */ 1729 fdctrl->msr &= ~FD_MSR_RQM; 1730 if (direction != FD_DIR_VERIFY) { 1731 /* 1732 * Now, we just have to wait for the DMA controller to 1733 * recall us... 1734 */ 1735 k->hold_DREQ(fdctrl->dma, fdctrl->dma_chann); 1736 k->schedule(fdctrl->dma); 1737 } else { 1738 /* Start transfer */ 1739 fdctrl_transfer_handler(fdctrl, fdctrl->dma_chann, 0, 1740 fdctrl->data_len); 1741 } 1742 return; 1743 } 1744 FLOPPY_DPRINTF("start non-DMA transfer\n"); 1745 fdctrl->msr |= FD_MSR_NONDMA | FD_MSR_RQM; 1746 if (direction != FD_DIR_WRITE) 1747 fdctrl->msr |= FD_MSR_DIO; 1748 /* IO based transfer: calculate len */ 1749 fdctrl_raise_irq(fdctrl); 1750 } 1751 1752 /* Prepare a transfer of deleted data */ 1753 static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction) 1754 { 1755 qemu_log_mask(LOG_UNIMP, "fdctrl_start_transfer_del() unimplemented\n"); 1756 1757 /* We don't handle deleted data, 1758 * so we don't return *ANYTHING* 1759 */ 1760 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1761 } 1762 1763 /* handlers for DMA transfers */ 1764 static int fdctrl_transfer_handler (void *opaque, int nchan, 1765 int dma_pos, int dma_len) 1766 { 1767 FDCtrl *fdctrl; 1768 FDrive *cur_drv; 1769 int len, start_pos, rel_pos; 1770 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00; 1771 IsaDmaClass *k; 1772 1773 fdctrl = opaque; 1774 if (fdctrl->msr & FD_MSR_RQM) { 1775 FLOPPY_DPRINTF("Not in DMA transfer mode !\n"); 1776 return 0; 1777 } 1778 k = ISADMA_GET_CLASS(fdctrl->dma); 1779 cur_drv = get_cur_drv(fdctrl); 1780 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL || 1781 fdctrl->data_dir == FD_DIR_SCANH) 1782 status2 = FD_SR2_SNS; 1783 if (dma_len > fdctrl->data_len) 1784 dma_len = fdctrl->data_len; 1785 if (cur_drv->blk == NULL) { 1786 if (fdctrl->data_dir == FD_DIR_WRITE) 1787 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1788 else 1789 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1790 len = 0; 1791 goto transfer_error; 1792 } 1793 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; 1794 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) { 1795 len = dma_len - fdctrl->data_pos; 1796 if (len + rel_pos > FD_SECTOR_LEN) 1797 len = FD_SECTOR_LEN - rel_pos; 1798 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x " 1799 "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos, 1800 fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head, 1801 cur_drv->track, cur_drv->sect, fd_sector(cur_drv), 1802 fd_sector(cur_drv) * FD_SECTOR_LEN); 1803 if (fdctrl->data_dir != FD_DIR_WRITE || 1804 len < FD_SECTOR_LEN || rel_pos != 0) { 1805 /* READ & SCAN commands and realign to a sector for WRITE */ 1806 if (blk_pread(cur_drv->blk, fd_offset(cur_drv), 1807 fdctrl->fifo, BDRV_SECTOR_SIZE) < 0) { 1808 FLOPPY_DPRINTF("Floppy: error getting sector %d\n", 1809 fd_sector(cur_drv)); 1810 /* Sure, image size is too small... */ 1811 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1812 } 1813 } 1814 switch (fdctrl->data_dir) { 1815 case FD_DIR_READ: 1816 /* READ commands */ 1817 k->write_memory(fdctrl->dma, nchan, fdctrl->fifo + rel_pos, 1818 fdctrl->data_pos, len); 1819 break; 1820 case FD_DIR_WRITE: 1821 /* WRITE commands */ 1822 if (cur_drv->ro) { 1823 /* Handle readonly medium early, no need to do DMA, touch the 1824 * LED or attempt any writes. A real floppy doesn't attempt 1825 * to write to readonly media either. */ 1826 fdctrl_stop_transfer(fdctrl, 1827 FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW, 1828 0x00); 1829 goto transfer_error; 1830 } 1831 1832 k->read_memory(fdctrl->dma, nchan, fdctrl->fifo + rel_pos, 1833 fdctrl->data_pos, len); 1834 if (blk_pwrite(cur_drv->blk, fd_offset(cur_drv), 1835 fdctrl->fifo, BDRV_SECTOR_SIZE, 0) < 0) { 1836 FLOPPY_DPRINTF("error writing sector %d\n", 1837 fd_sector(cur_drv)); 1838 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1839 goto transfer_error; 1840 } 1841 break; 1842 case FD_DIR_VERIFY: 1843 /* VERIFY commands */ 1844 break; 1845 default: 1846 /* SCAN commands */ 1847 { 1848 uint8_t tmpbuf[FD_SECTOR_LEN]; 1849 int ret; 1850 k->read_memory(fdctrl->dma, nchan, tmpbuf, fdctrl->data_pos, 1851 len); 1852 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len); 1853 if (ret == 0) { 1854 status2 = FD_SR2_SEH; 1855 goto end_transfer; 1856 } 1857 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) || 1858 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) { 1859 status2 = 0x00; 1860 goto end_transfer; 1861 } 1862 } 1863 break; 1864 } 1865 fdctrl->data_pos += len; 1866 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; 1867 if (rel_pos == 0) { 1868 /* Seek to next sector */ 1869 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) 1870 break; 1871 } 1872 } 1873 end_transfer: 1874 len = fdctrl->data_pos - start_pos; 1875 FLOPPY_DPRINTF("end transfer %d %d %d\n", 1876 fdctrl->data_pos, len, fdctrl->data_len); 1877 if (fdctrl->data_dir == FD_DIR_SCANE || 1878 fdctrl->data_dir == FD_DIR_SCANL || 1879 fdctrl->data_dir == FD_DIR_SCANH) 1880 status2 = FD_SR2_SEH; 1881 fdctrl->data_len -= len; 1882 fdctrl_stop_transfer(fdctrl, status0, status1, status2); 1883 transfer_error: 1884 1885 return len; 1886 } 1887 1888 /* Data register : 0x05 */ 1889 static uint32_t fdctrl_read_data(FDCtrl *fdctrl) 1890 { 1891 FDrive *cur_drv; 1892 uint32_t retval = 0; 1893 uint32_t pos; 1894 1895 cur_drv = get_cur_drv(fdctrl); 1896 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1897 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) { 1898 FLOPPY_DPRINTF("error: controller not ready for reading\n"); 1899 return 0; 1900 } 1901 1902 /* If data_len spans multiple sectors, the current position in the FIFO 1903 * wraps around while fdctrl->data_pos is the real position in the whole 1904 * request. */ 1905 pos = fdctrl->data_pos; 1906 pos %= FD_SECTOR_LEN; 1907 1908 switch (fdctrl->phase) { 1909 case FD_PHASE_EXECUTION: 1910 assert(fdctrl->msr & FD_MSR_NONDMA); 1911 if (pos == 0) { 1912 if (fdctrl->data_pos != 0) 1913 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) { 1914 FLOPPY_DPRINTF("error seeking to next sector %d\n", 1915 fd_sector(cur_drv)); 1916 return 0; 1917 } 1918 if (blk_pread(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo, 1919 BDRV_SECTOR_SIZE) 1920 < 0) { 1921 FLOPPY_DPRINTF("error getting sector %d\n", 1922 fd_sector(cur_drv)); 1923 /* Sure, image size is too small... */ 1924 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1925 } 1926 } 1927 1928 if (++fdctrl->data_pos == fdctrl->data_len) { 1929 fdctrl->msr &= ~FD_MSR_RQM; 1930 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1931 } 1932 break; 1933 1934 case FD_PHASE_RESULT: 1935 assert(!(fdctrl->msr & FD_MSR_NONDMA)); 1936 if (++fdctrl->data_pos == fdctrl->data_len) { 1937 fdctrl->msr &= ~FD_MSR_RQM; 1938 fdctrl_to_command_phase(fdctrl); 1939 fdctrl_reset_irq(fdctrl); 1940 } 1941 break; 1942 1943 case FD_PHASE_COMMAND: 1944 default: 1945 abort(); 1946 } 1947 1948 retval = fdctrl->fifo[pos]; 1949 FLOPPY_DPRINTF("data register: 0x%02x\n", retval); 1950 1951 return retval; 1952 } 1953 1954 static void fdctrl_format_sector(FDCtrl *fdctrl) 1955 { 1956 FDrive *cur_drv; 1957 uint8_t kh, kt, ks; 1958 1959 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1960 cur_drv = get_cur_drv(fdctrl); 1961 kt = fdctrl->fifo[6]; 1962 kh = fdctrl->fifo[7]; 1963 ks = fdctrl->fifo[8]; 1964 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n", 1965 GET_CUR_DRV(fdctrl), kh, kt, ks, 1966 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, 1967 NUM_SIDES(cur_drv))); 1968 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) { 1969 case 2: 1970 /* sect too big */ 1971 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1972 fdctrl->fifo[3] = kt; 1973 fdctrl->fifo[4] = kh; 1974 fdctrl->fifo[5] = ks; 1975 return; 1976 case 3: 1977 /* track too big */ 1978 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00); 1979 fdctrl->fifo[3] = kt; 1980 fdctrl->fifo[4] = kh; 1981 fdctrl->fifo[5] = ks; 1982 return; 1983 case 4: 1984 /* No seek enabled */ 1985 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1986 fdctrl->fifo[3] = kt; 1987 fdctrl->fifo[4] = kh; 1988 fdctrl->fifo[5] = ks; 1989 return; 1990 case 1: 1991 fdctrl->status0 |= FD_SR0_SEEK; 1992 break; 1993 default: 1994 break; 1995 } 1996 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1997 if (cur_drv->blk == NULL || 1998 blk_pwrite(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo, 1999 BDRV_SECTOR_SIZE, 0) < 0) { 2000 FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv)); 2001 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 2002 } else { 2003 if (cur_drv->sect == cur_drv->last_sect) { 2004 fdctrl->data_state &= ~FD_STATE_FORMAT; 2005 /* Last sector done */ 2006 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2007 } else { 2008 /* More to do */ 2009 fdctrl->data_pos = 0; 2010 fdctrl->data_len = 4; 2011 } 2012 } 2013 } 2014 2015 static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction) 2016 { 2017 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0; 2018 fdctrl->fifo[0] = fdctrl->lock << 4; 2019 fdctrl_to_result_phase(fdctrl, 1); 2020 } 2021 2022 static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction) 2023 { 2024 FDrive *cur_drv = get_cur_drv(fdctrl); 2025 2026 /* Drives position */ 2027 fdctrl->fifo[0] = drv0(fdctrl)->track; 2028 fdctrl->fifo[1] = drv1(fdctrl)->track; 2029 #if MAX_FD == 4 2030 fdctrl->fifo[2] = drv2(fdctrl)->track; 2031 fdctrl->fifo[3] = drv3(fdctrl)->track; 2032 #else 2033 fdctrl->fifo[2] = 0; 2034 fdctrl->fifo[3] = 0; 2035 #endif 2036 /* timers */ 2037 fdctrl->fifo[4] = fdctrl->timer0; 2038 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0); 2039 fdctrl->fifo[6] = cur_drv->last_sect; 2040 fdctrl->fifo[7] = (fdctrl->lock << 7) | 2041 (cur_drv->perpendicular << 2); 2042 fdctrl->fifo[8] = fdctrl->config; 2043 fdctrl->fifo[9] = fdctrl->precomp_trk; 2044 fdctrl_to_result_phase(fdctrl, 10); 2045 } 2046 2047 static void fdctrl_handle_version(FDCtrl *fdctrl, int direction) 2048 { 2049 /* Controller's version */ 2050 fdctrl->fifo[0] = fdctrl->version; 2051 fdctrl_to_result_phase(fdctrl, 1); 2052 } 2053 2054 static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction) 2055 { 2056 fdctrl->fifo[0] = 0x41; /* Stepping 1 */ 2057 fdctrl_to_result_phase(fdctrl, 1); 2058 } 2059 2060 static void fdctrl_handle_restore(FDCtrl *fdctrl, int direction) 2061 { 2062 FDrive *cur_drv = get_cur_drv(fdctrl); 2063 2064 /* Drives position */ 2065 drv0(fdctrl)->track = fdctrl->fifo[3]; 2066 drv1(fdctrl)->track = fdctrl->fifo[4]; 2067 #if MAX_FD == 4 2068 drv2(fdctrl)->track = fdctrl->fifo[5]; 2069 drv3(fdctrl)->track = fdctrl->fifo[6]; 2070 #endif 2071 /* timers */ 2072 fdctrl->timer0 = fdctrl->fifo[7]; 2073 fdctrl->timer1 = fdctrl->fifo[8]; 2074 cur_drv->last_sect = fdctrl->fifo[9]; 2075 fdctrl->lock = fdctrl->fifo[10] >> 7; 2076 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF; 2077 fdctrl->config = fdctrl->fifo[11]; 2078 fdctrl->precomp_trk = fdctrl->fifo[12]; 2079 fdctrl->pwrd = fdctrl->fifo[13]; 2080 fdctrl_to_command_phase(fdctrl); 2081 } 2082 2083 static void fdctrl_handle_save(FDCtrl *fdctrl, int direction) 2084 { 2085 FDrive *cur_drv = get_cur_drv(fdctrl); 2086 2087 fdctrl->fifo[0] = 0; 2088 fdctrl->fifo[1] = 0; 2089 /* Drives position */ 2090 fdctrl->fifo[2] = drv0(fdctrl)->track; 2091 fdctrl->fifo[3] = drv1(fdctrl)->track; 2092 #if MAX_FD == 4 2093 fdctrl->fifo[4] = drv2(fdctrl)->track; 2094 fdctrl->fifo[5] = drv3(fdctrl)->track; 2095 #else 2096 fdctrl->fifo[4] = 0; 2097 fdctrl->fifo[5] = 0; 2098 #endif 2099 /* timers */ 2100 fdctrl->fifo[6] = fdctrl->timer0; 2101 fdctrl->fifo[7] = fdctrl->timer1; 2102 fdctrl->fifo[8] = cur_drv->last_sect; 2103 fdctrl->fifo[9] = (fdctrl->lock << 7) | 2104 (cur_drv->perpendicular << 2); 2105 fdctrl->fifo[10] = fdctrl->config; 2106 fdctrl->fifo[11] = fdctrl->precomp_trk; 2107 fdctrl->fifo[12] = fdctrl->pwrd; 2108 fdctrl->fifo[13] = 0; 2109 fdctrl->fifo[14] = 0; 2110 fdctrl_to_result_phase(fdctrl, 15); 2111 } 2112 2113 static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction) 2114 { 2115 FDrive *cur_drv = get_cur_drv(fdctrl); 2116 2117 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; 2118 timer_mod(fdctrl->result_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 2119 (NANOSECONDS_PER_SECOND / 50)); 2120 } 2121 2122 static void fdctrl_handle_format_track(FDCtrl *fdctrl, int direction) 2123 { 2124 FDrive *cur_drv; 2125 2126 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2127 cur_drv = get_cur_drv(fdctrl); 2128 fdctrl->data_state |= FD_STATE_FORMAT; 2129 if (fdctrl->fifo[0] & 0x80) 2130 fdctrl->data_state |= FD_STATE_MULTI; 2131 else 2132 fdctrl->data_state &= ~FD_STATE_MULTI; 2133 cur_drv->bps = 2134 fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2]; 2135 #if 0 2136 cur_drv->last_sect = 2137 cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] : 2138 fdctrl->fifo[3] / 2; 2139 #else 2140 cur_drv->last_sect = fdctrl->fifo[3]; 2141 #endif 2142 /* TODO: implement format using DMA expected by the Bochs BIOS 2143 * and Linux fdformat (read 3 bytes per sector via DMA and fill 2144 * the sector with the specified fill byte 2145 */ 2146 fdctrl->data_state &= ~FD_STATE_FORMAT; 2147 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2148 } 2149 2150 static void fdctrl_handle_specify(FDCtrl *fdctrl, int direction) 2151 { 2152 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF; 2153 fdctrl->timer1 = fdctrl->fifo[2] >> 1; 2154 if (fdctrl->fifo[2] & 1) 2155 fdctrl->dor &= ~FD_DOR_DMAEN; 2156 else 2157 fdctrl->dor |= FD_DOR_DMAEN; 2158 /* No result back */ 2159 fdctrl_to_command_phase(fdctrl); 2160 } 2161 2162 static void fdctrl_handle_sense_drive_status(FDCtrl *fdctrl, int direction) 2163 { 2164 FDrive *cur_drv; 2165 2166 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2167 cur_drv = get_cur_drv(fdctrl); 2168 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; 2169 /* 1 Byte status back */ 2170 fdctrl->fifo[0] = (cur_drv->ro << 6) | 2171 (cur_drv->track == 0 ? 0x10 : 0x00) | 2172 (cur_drv->head << 2) | 2173 GET_CUR_DRV(fdctrl) | 2174 0x28; 2175 fdctrl_to_result_phase(fdctrl, 1); 2176 } 2177 2178 static void fdctrl_handle_recalibrate(FDCtrl *fdctrl, int direction) 2179 { 2180 FDrive *cur_drv; 2181 2182 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2183 cur_drv = get_cur_drv(fdctrl); 2184 fd_recalibrate(cur_drv); 2185 fdctrl_to_command_phase(fdctrl); 2186 /* Raise Interrupt */ 2187 fdctrl->status0 |= FD_SR0_SEEK; 2188 fdctrl_raise_irq(fdctrl); 2189 } 2190 2191 static void fdctrl_handle_sense_interrupt_status(FDCtrl *fdctrl, int direction) 2192 { 2193 FDrive *cur_drv = get_cur_drv(fdctrl); 2194 2195 if (fdctrl->reset_sensei > 0) { 2196 fdctrl->fifo[0] = 2197 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei; 2198 fdctrl->reset_sensei--; 2199 } else if (!(fdctrl->sra & FD_SRA_INTPEND)) { 2200 fdctrl->fifo[0] = FD_SR0_INVCMD; 2201 fdctrl_to_result_phase(fdctrl, 1); 2202 return; 2203 } else { 2204 fdctrl->fifo[0] = 2205 (fdctrl->status0 & ~(FD_SR0_HEAD | FD_SR0_DS1 | FD_SR0_DS0)) 2206 | GET_CUR_DRV(fdctrl); 2207 } 2208 2209 fdctrl->fifo[1] = cur_drv->track; 2210 fdctrl_to_result_phase(fdctrl, 2); 2211 fdctrl_reset_irq(fdctrl); 2212 fdctrl->status0 = FD_SR0_RDYCHG; 2213 } 2214 2215 static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction) 2216 { 2217 FDrive *cur_drv; 2218 2219 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2220 cur_drv = get_cur_drv(fdctrl); 2221 fdctrl_to_command_phase(fdctrl); 2222 /* The seek command just sends step pulses to the drive and doesn't care if 2223 * there is a medium inserted of if it's banging the head against the drive. 2224 */ 2225 fd_seek(cur_drv, cur_drv->head, fdctrl->fifo[2], cur_drv->sect, 1); 2226 /* Raise Interrupt */ 2227 fdctrl->status0 |= FD_SR0_SEEK; 2228 fdctrl_raise_irq(fdctrl); 2229 } 2230 2231 static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction) 2232 { 2233 FDrive *cur_drv = get_cur_drv(fdctrl); 2234 2235 if (fdctrl->fifo[1] & 0x80) 2236 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7; 2237 /* No result back */ 2238 fdctrl_to_command_phase(fdctrl); 2239 } 2240 2241 static void fdctrl_handle_configure(FDCtrl *fdctrl, int direction) 2242 { 2243 fdctrl->config = fdctrl->fifo[2]; 2244 fdctrl->precomp_trk = fdctrl->fifo[3]; 2245 /* No result back */ 2246 fdctrl_to_command_phase(fdctrl); 2247 } 2248 2249 static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction) 2250 { 2251 fdctrl->pwrd = fdctrl->fifo[1]; 2252 fdctrl->fifo[0] = fdctrl->fifo[1]; 2253 fdctrl_to_result_phase(fdctrl, 1); 2254 } 2255 2256 static void fdctrl_handle_option(FDCtrl *fdctrl, int direction) 2257 { 2258 /* No result back */ 2259 fdctrl_to_command_phase(fdctrl); 2260 } 2261 2262 static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction) 2263 { 2264 FDrive *cur_drv = get_cur_drv(fdctrl); 2265 uint32_t pos; 2266 2267 pos = fdctrl->data_pos - 1; 2268 pos %= FD_SECTOR_LEN; 2269 if (fdctrl->fifo[pos] & 0x80) { 2270 /* Command parameters done */ 2271 if (fdctrl->fifo[pos] & 0x40) { 2272 fdctrl->fifo[0] = fdctrl->fifo[1]; 2273 fdctrl->fifo[2] = 0; 2274 fdctrl->fifo[3] = 0; 2275 fdctrl_to_result_phase(fdctrl, 4); 2276 } else { 2277 fdctrl_to_command_phase(fdctrl); 2278 } 2279 } else if (fdctrl->data_len > 7) { 2280 /* ERROR */ 2281 fdctrl->fifo[0] = 0x80 | 2282 (cur_drv->head << 2) | GET_CUR_DRV(fdctrl); 2283 fdctrl_to_result_phase(fdctrl, 1); 2284 } 2285 } 2286 2287 static void fdctrl_handle_relative_seek_in(FDCtrl *fdctrl, int direction) 2288 { 2289 FDrive *cur_drv; 2290 2291 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2292 cur_drv = get_cur_drv(fdctrl); 2293 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) { 2294 fd_seek(cur_drv, cur_drv->head, cur_drv->max_track - 1, 2295 cur_drv->sect, 1); 2296 } else { 2297 fd_seek(cur_drv, cur_drv->head, 2298 cur_drv->track + fdctrl->fifo[2], cur_drv->sect, 1); 2299 } 2300 fdctrl_to_command_phase(fdctrl); 2301 /* Raise Interrupt */ 2302 fdctrl->status0 |= FD_SR0_SEEK; 2303 fdctrl_raise_irq(fdctrl); 2304 } 2305 2306 static void fdctrl_handle_relative_seek_out(FDCtrl *fdctrl, int direction) 2307 { 2308 FDrive *cur_drv; 2309 2310 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 2311 cur_drv = get_cur_drv(fdctrl); 2312 if (fdctrl->fifo[2] > cur_drv->track) { 2313 fd_seek(cur_drv, cur_drv->head, 0, cur_drv->sect, 1); 2314 } else { 2315 fd_seek(cur_drv, cur_drv->head, 2316 cur_drv->track - fdctrl->fifo[2], cur_drv->sect, 1); 2317 } 2318 fdctrl_to_command_phase(fdctrl); 2319 /* Raise Interrupt */ 2320 fdctrl->status0 |= FD_SR0_SEEK; 2321 fdctrl_raise_irq(fdctrl); 2322 } 2323 2324 /* 2325 * Handlers for the execution phase of each command 2326 */ 2327 typedef struct FDCtrlCommand { 2328 uint8_t value; 2329 uint8_t mask; 2330 const char* name; 2331 int parameters; 2332 void (*handler)(FDCtrl *fdctrl, int direction); 2333 int direction; 2334 } FDCtrlCommand; 2335 2336 static const FDCtrlCommand handlers[] = { 2337 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ }, 2338 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE }, 2339 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek }, 2340 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status }, 2341 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate }, 2342 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track }, 2343 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ }, 2344 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */ 2345 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */ 2346 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ }, 2347 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE }, 2348 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_start_transfer, FD_DIR_VERIFY }, 2349 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL }, 2350 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH }, 2351 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE }, 2352 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid }, 2353 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify }, 2354 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status }, 2355 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode }, 2356 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure }, 2357 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode }, 2358 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option }, 2359 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command }, 2360 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out }, 2361 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented }, 2362 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in }, 2363 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock }, 2364 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg }, 2365 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version }, 2366 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid }, 2367 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */ 2368 { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */ 2369 }; 2370 /* Associate command to an index in the 'handlers' array */ 2371 static uint8_t command_to_handler[256]; 2372 2373 static const FDCtrlCommand *get_command(uint8_t cmd) 2374 { 2375 int idx; 2376 2377 idx = command_to_handler[cmd]; 2378 FLOPPY_DPRINTF("%s command\n", handlers[idx].name); 2379 return &handlers[idx]; 2380 } 2381 2382 static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value) 2383 { 2384 FDrive *cur_drv; 2385 const FDCtrlCommand *cmd; 2386 uint32_t pos; 2387 2388 /* Reset mode */ 2389 if (!(fdctrl->dor & FD_DOR_nRESET)) { 2390 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 2391 return; 2392 } 2393 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) { 2394 FLOPPY_DPRINTF("error: controller not ready for writing\n"); 2395 return; 2396 } 2397 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 2398 2399 FLOPPY_DPRINTF("%s: %02x\n", __func__, value); 2400 2401 /* If data_len spans multiple sectors, the current position in the FIFO 2402 * wraps around while fdctrl->data_pos is the real position in the whole 2403 * request. */ 2404 pos = fdctrl->data_pos++; 2405 pos %= FD_SECTOR_LEN; 2406 fdctrl->fifo[pos] = value; 2407 2408 if (fdctrl->data_pos == fdctrl->data_len) { 2409 fdctrl->msr &= ~FD_MSR_RQM; 2410 } 2411 2412 switch (fdctrl->phase) { 2413 case FD_PHASE_EXECUTION: 2414 /* For DMA requests, RQM should be cleared during execution phase, so 2415 * we would have errored out above. */ 2416 assert(fdctrl->msr & FD_MSR_NONDMA); 2417 2418 /* FIFO data write */ 2419 if (pos == FD_SECTOR_LEN - 1 || 2420 fdctrl->data_pos == fdctrl->data_len) { 2421 cur_drv = get_cur_drv(fdctrl); 2422 if (blk_pwrite(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo, 2423 BDRV_SECTOR_SIZE, 0) < 0) { 2424 FLOPPY_DPRINTF("error writing sector %d\n", 2425 fd_sector(cur_drv)); 2426 break; 2427 } 2428 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) { 2429 FLOPPY_DPRINTF("error seeking to next sector %d\n", 2430 fd_sector(cur_drv)); 2431 break; 2432 } 2433 } 2434 2435 /* Switch to result phase when done with the transfer */ 2436 if (fdctrl->data_pos == fdctrl->data_len) { 2437 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2438 } 2439 break; 2440 2441 case FD_PHASE_COMMAND: 2442 assert(!(fdctrl->msr & FD_MSR_NONDMA)); 2443 assert(fdctrl->data_pos < FD_SECTOR_LEN); 2444 2445 if (pos == 0) { 2446 /* The first byte specifies the command. Now we start reading 2447 * as many parameters as this command requires. */ 2448 cmd = get_command(value); 2449 fdctrl->data_len = cmd->parameters + 1; 2450 if (cmd->parameters) { 2451 fdctrl->msr |= FD_MSR_RQM; 2452 } 2453 fdctrl->msr |= FD_MSR_CMDBUSY; 2454 } 2455 2456 if (fdctrl->data_pos == fdctrl->data_len) { 2457 /* We have all parameters now, execute the command */ 2458 fdctrl->phase = FD_PHASE_EXECUTION; 2459 2460 if (fdctrl->data_state & FD_STATE_FORMAT) { 2461 fdctrl_format_sector(fdctrl); 2462 break; 2463 } 2464 2465 cmd = get_command(fdctrl->fifo[0]); 2466 FLOPPY_DPRINTF("Calling handler for '%s'\n", cmd->name); 2467 cmd->handler(fdctrl, cmd->direction); 2468 } 2469 break; 2470 2471 case FD_PHASE_RESULT: 2472 default: 2473 abort(); 2474 } 2475 } 2476 2477 static void fdctrl_result_timer(void *opaque) 2478 { 2479 FDCtrl *fdctrl = opaque; 2480 FDrive *cur_drv = get_cur_drv(fdctrl); 2481 2482 /* Pretend we are spinning. 2483 * This is needed for Coherent, which uses READ ID to check for 2484 * sector interleaving. 2485 */ 2486 if (cur_drv->last_sect != 0) { 2487 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1; 2488 } 2489 /* READ_ID can't automatically succeed! */ 2490 if (fdctrl->check_media_rate && 2491 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) { 2492 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n", 2493 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate); 2494 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00); 2495 } else { 2496 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2497 } 2498 } 2499 2500 /* Init functions */ 2501 2502 static void fdctrl_init_drives(FloppyBus *bus, DriveInfo **fds) 2503 { 2504 DeviceState *dev; 2505 int i; 2506 2507 for (i = 0; i < MAX_FD; i++) { 2508 if (fds[i]) { 2509 dev = qdev_new("floppy"); 2510 qdev_prop_set_uint32(dev, "unit", i); 2511 qdev_prop_set_enum(dev, "drive-type", FLOPPY_DRIVE_TYPE_AUTO); 2512 qdev_prop_set_drive_err(dev, "drive", blk_by_legacy_dinfo(fds[i]), 2513 &error_fatal); 2514 qdev_realize_and_unref(dev, &bus->bus, &error_fatal); 2515 } 2516 } 2517 } 2518 2519 void isa_fdc_init_drives(ISADevice *fdc, DriveInfo **fds) 2520 { 2521 fdctrl_init_drives(&ISA_FDC(fdc)->state.bus, fds); 2522 } 2523 2524 static void fdctrl_connect_drives(FDCtrl *fdctrl, DeviceState *fdc_dev, 2525 Error **errp) 2526 { 2527 unsigned int i; 2528 FDrive *drive; 2529 DeviceState *dev; 2530 BlockBackend *blk; 2531 bool ok; 2532 const char *fdc_name, *drive_suffix; 2533 2534 for (i = 0; i < MAX_FD; i++) { 2535 drive = &fdctrl->drives[i]; 2536 drive->fdctrl = fdctrl; 2537 2538 /* If the drive is not present, we skip creating the qdev device, but 2539 * still have to initialise the controller. */ 2540 blk = fdctrl->qdev_for_drives[i].blk; 2541 if (!blk) { 2542 fd_init(drive); 2543 fd_revalidate(drive); 2544 continue; 2545 } 2546 2547 fdc_name = object_get_typename(OBJECT(fdc_dev)); 2548 drive_suffix = !strcmp(fdc_name, "SUNW,fdtwo") ? "" : i ? "B" : "A"; 2549 warn_report("warning: property %s.drive%s is deprecated", 2550 fdc_name, drive_suffix); 2551 error_printf("Use -device floppy,unit=%d,drive=... instead.\n", i); 2552 2553 dev = qdev_new("floppy"); 2554 qdev_prop_set_uint32(dev, "unit", i); 2555 qdev_prop_set_enum(dev, "drive-type", fdctrl->qdev_for_drives[i].type); 2556 2557 /* 2558 * Hack alert: we move the backend from the floppy controller 2559 * device to the floppy device. We first need to detach the 2560 * controller, or else floppy_create()'s qdev_prop_set_drive() 2561 * will die when it attaches floppy device. We also need to 2562 * take another reference so that blk_detach_dev() doesn't 2563 * free blk while we still need it. 2564 * 2565 * The hack is probably a bad idea. 2566 */ 2567 blk_ref(blk); 2568 blk_detach_dev(blk, fdc_dev); 2569 fdctrl->qdev_for_drives[i].blk = NULL; 2570 ok = qdev_prop_set_drive_err(dev, "drive", blk, errp); 2571 blk_unref(blk); 2572 if (!ok) { 2573 return; 2574 } 2575 2576 if (!qdev_realize_and_unref(dev, &fdctrl->bus.bus, errp)) { 2577 return; 2578 } 2579 } 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_new("sysbus-fdc"); 2591 sys = SYSBUS_FDC(dev); 2592 fdctrl = &sys->state; 2593 fdctrl->dma_chann = dma_chann; /* FIXME */ 2594 sbd = SYS_BUS_DEVICE(dev); 2595 sysbus_realize_and_unref(sbd, &error_fatal); 2596 sysbus_connect_irq(sbd, 0, irq); 2597 sysbus_mmio_map(sbd, 0, mmio_base); 2598 2599 fdctrl_init_drives(&sys->state.bus, fds); 2600 } 2601 2602 void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base, 2603 DriveInfo **fds, qemu_irq *fdc_tc) 2604 { 2605 DeviceState *dev; 2606 FDCtrlSysBus *sys; 2607 2608 dev = qdev_new("SUNW,fdtwo"); 2609 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 2610 sys = SYSBUS_FDC(dev); 2611 sysbus_connect_irq(SYS_BUS_DEVICE(sys), 0, irq); 2612 sysbus_mmio_map(SYS_BUS_DEVICE(sys), 0, io_base); 2613 *fdc_tc = qdev_get_gpio_in(dev, 0); 2614 2615 fdctrl_init_drives(&sys->state.bus, fds); 2616 } 2617 2618 static void fdctrl_realize_common(DeviceState *dev, FDCtrl *fdctrl, 2619 Error **errp) 2620 { 2621 int i, j; 2622 static int command_tables_inited = 0; 2623 2624 if (fdctrl->fallback == FLOPPY_DRIVE_TYPE_AUTO) { 2625 error_setg(errp, "Cannot choose a fallback FDrive type of 'auto'"); 2626 return; 2627 } 2628 2629 /* Fill 'command_to_handler' lookup table */ 2630 if (!command_tables_inited) { 2631 command_tables_inited = 1; 2632 for (i = ARRAY_SIZE(handlers) - 1; i >= 0; i--) { 2633 for (j = 0; j < sizeof(command_to_handler); j++) { 2634 if ((j & handlers[i].mask) == handlers[i].value) { 2635 command_to_handler[j] = i; 2636 } 2637 } 2638 } 2639 } 2640 2641 FLOPPY_DPRINTF("init controller\n"); 2642 fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN); 2643 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 2644 fdctrl->fifo_size = 512; 2645 fdctrl->result_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, 2646 fdctrl_result_timer, fdctrl); 2647 2648 fdctrl->version = 0x90; /* Intel 82078 controller */ 2649 fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */ 2650 fdctrl->num_floppies = MAX_FD; 2651 2652 if (fdctrl->dma_chann != -1) { 2653 IsaDmaClass *k; 2654 assert(fdctrl->dma); 2655 k = ISADMA_GET_CLASS(fdctrl->dma); 2656 k->register_channel(fdctrl->dma, fdctrl->dma_chann, 2657 &fdctrl_transfer_handler, fdctrl); 2658 } 2659 2660 floppy_bus_create(fdctrl, &fdctrl->bus, dev); 2661 fdctrl_connect_drives(fdctrl, dev, errp); 2662 } 2663 2664 static const MemoryRegionPortio fdc_portio_list[] = { 2665 { 1, 5, 1, .read = fdctrl_read, .write = fdctrl_write }, 2666 { 7, 1, 1, .read = fdctrl_read, .write = fdctrl_write }, 2667 PORTIO_END_OF_LIST(), 2668 }; 2669 2670 static void isabus_fdc_realize(DeviceState *dev, Error **errp) 2671 { 2672 ISADevice *isadev = ISA_DEVICE(dev); 2673 FDCtrlISABus *isa = ISA_FDC(dev); 2674 FDCtrl *fdctrl = &isa->state; 2675 Error *err = NULL; 2676 2677 isa_register_portio_list(isadev, &fdctrl->portio_list, 2678 isa->iobase, fdc_portio_list, fdctrl, 2679 "fdc"); 2680 2681 isa_init_irq(isadev, &fdctrl->irq, isa->irq); 2682 fdctrl->dma_chann = isa->dma; 2683 if (fdctrl->dma_chann != -1) { 2684 fdctrl->dma = isa_get_dma(isa_bus_from_device(isadev), isa->dma); 2685 if (!fdctrl->dma) { 2686 error_setg(errp, "ISA controller does not support DMA"); 2687 return; 2688 } 2689 } 2690 2691 qdev_set_legacy_instance_id(dev, isa->iobase, 2); 2692 fdctrl_realize_common(dev, fdctrl, &err); 2693 if (err != NULL) { 2694 error_propagate(errp, err); 2695 return; 2696 } 2697 } 2698 2699 static void sysbus_fdc_initfn(Object *obj) 2700 { 2701 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 2702 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2703 FDCtrl *fdctrl = &sys->state; 2704 2705 fdctrl->dma_chann = -1; 2706 2707 memory_region_init_io(&fdctrl->iomem, obj, &fdctrl_mem_ops, fdctrl, 2708 "fdc", 0x08); 2709 sysbus_init_mmio(sbd, &fdctrl->iomem); 2710 } 2711 2712 static void sun4m_fdc_initfn(Object *obj) 2713 { 2714 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 2715 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2716 FDCtrl *fdctrl = &sys->state; 2717 2718 fdctrl->dma_chann = -1; 2719 2720 memory_region_init_io(&fdctrl->iomem, obj, &fdctrl_mem_strict_ops, 2721 fdctrl, "fdctrl", 0x08); 2722 sysbus_init_mmio(sbd, &fdctrl->iomem); 2723 } 2724 2725 static void sysbus_fdc_common_initfn(Object *obj) 2726 { 2727 DeviceState *dev = DEVICE(obj); 2728 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 2729 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2730 FDCtrl *fdctrl = &sys->state; 2731 2732 qdev_set_legacy_instance_id(dev, 0 /* io */, 2); /* FIXME */ 2733 2734 sysbus_init_irq(sbd, &fdctrl->irq); 2735 qdev_init_gpio_in(dev, fdctrl_handle_tc, 1); 2736 } 2737 2738 static void sysbus_fdc_common_realize(DeviceState *dev, Error **errp) 2739 { 2740 FDCtrlSysBus *sys = SYSBUS_FDC(dev); 2741 FDCtrl *fdctrl = &sys->state; 2742 2743 fdctrl_realize_common(dev, fdctrl, errp); 2744 } 2745 2746 FloppyDriveType isa_fdc_get_drive_type(ISADevice *fdc, int i) 2747 { 2748 FDCtrlISABus *isa = ISA_FDC(fdc); 2749 2750 return isa->state.drives[i].drive; 2751 } 2752 2753 static void isa_fdc_get_drive_max_chs(FloppyDriveType type, uint8_t *maxc, 2754 uint8_t *maxh, uint8_t *maxs) 2755 { 2756 const FDFormat *fdf; 2757 2758 *maxc = *maxh = *maxs = 0; 2759 for (fdf = fd_formats; fdf->drive != FLOPPY_DRIVE_TYPE_NONE; fdf++) { 2760 if (fdf->drive != type) { 2761 continue; 2762 } 2763 if (*maxc < fdf->max_track) { 2764 *maxc = fdf->max_track; 2765 } 2766 if (*maxh < fdf->max_head) { 2767 *maxh = fdf->max_head; 2768 } 2769 if (*maxs < fdf->last_sect) { 2770 *maxs = fdf->last_sect; 2771 } 2772 } 2773 (*maxc)--; 2774 } 2775 2776 static Aml *build_fdinfo_aml(int idx, FloppyDriveType type) 2777 { 2778 Aml *dev, *fdi; 2779 uint8_t maxc, maxh, maxs; 2780 2781 isa_fdc_get_drive_max_chs(type, &maxc, &maxh, &maxs); 2782 2783 dev = aml_device("FLP%c", 'A' + idx); 2784 2785 aml_append(dev, aml_name_decl("_ADR", aml_int(idx))); 2786 2787 fdi = aml_package(16); 2788 aml_append(fdi, aml_int(idx)); /* Drive Number */ 2789 aml_append(fdi, 2790 aml_int(cmos_get_fd_drive_type(type))); /* Device Type */ 2791 /* 2792 * the values below are the limits of the drive, and are thus independent 2793 * of the inserted media 2794 */ 2795 aml_append(fdi, aml_int(maxc)); /* Maximum Cylinder Number */ 2796 aml_append(fdi, aml_int(maxs)); /* Maximum Sector Number */ 2797 aml_append(fdi, aml_int(maxh)); /* Maximum Head Number */ 2798 /* 2799 * SeaBIOS returns the below values for int 0x13 func 0x08 regardless of 2800 * the drive type, so shall we 2801 */ 2802 aml_append(fdi, aml_int(0xAF)); /* disk_specify_1 */ 2803 aml_append(fdi, aml_int(0x02)); /* disk_specify_2 */ 2804 aml_append(fdi, aml_int(0x25)); /* disk_motor_wait */ 2805 aml_append(fdi, aml_int(0x02)); /* disk_sector_siz */ 2806 aml_append(fdi, aml_int(0x12)); /* disk_eot */ 2807 aml_append(fdi, aml_int(0x1B)); /* disk_rw_gap */ 2808 aml_append(fdi, aml_int(0xFF)); /* disk_dtl */ 2809 aml_append(fdi, aml_int(0x6C)); /* disk_formt_gap */ 2810 aml_append(fdi, aml_int(0xF6)); /* disk_fill */ 2811 aml_append(fdi, aml_int(0x0F)); /* disk_head_sttl */ 2812 aml_append(fdi, aml_int(0x08)); /* disk_motor_strt */ 2813 2814 aml_append(dev, aml_name_decl("_FDI", fdi)); 2815 return dev; 2816 } 2817 2818 int cmos_get_fd_drive_type(FloppyDriveType fd0) 2819 { 2820 int val; 2821 2822 switch (fd0) { 2823 case FLOPPY_DRIVE_TYPE_144: 2824 /* 1.44 Mb 3"5 drive */ 2825 val = 4; 2826 break; 2827 case FLOPPY_DRIVE_TYPE_288: 2828 /* 2.88 Mb 3"5 drive */ 2829 val = 5; 2830 break; 2831 case FLOPPY_DRIVE_TYPE_120: 2832 /* 1.2 Mb 5"5 drive */ 2833 val = 2; 2834 break; 2835 case FLOPPY_DRIVE_TYPE_NONE: 2836 default: 2837 val = 0; 2838 break; 2839 } 2840 return val; 2841 } 2842 2843 static void fdc_isa_build_aml(ISADevice *isadev, Aml *scope) 2844 { 2845 Aml *dev; 2846 Aml *crs; 2847 int i; 2848 2849 #define ACPI_FDE_MAX_FD 4 2850 uint32_t fde_buf[5] = { 2851 0, 0, 0, 0, /* presence of floppy drives #0 - #3 */ 2852 cpu_to_le32(2) /* tape presence (2 == never present) */ 2853 }; 2854 2855 crs = aml_resource_template(); 2856 aml_append(crs, aml_io(AML_DECODE16, 0x03F2, 0x03F2, 0x00, 0x04)); 2857 aml_append(crs, aml_io(AML_DECODE16, 0x03F7, 0x03F7, 0x00, 0x01)); 2858 aml_append(crs, aml_irq_no_flags(6)); 2859 aml_append(crs, 2860 aml_dma(AML_COMPATIBILITY, AML_NOTBUSMASTER, AML_TRANSFER8, 2)); 2861 2862 dev = aml_device("FDC0"); 2863 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0700"))); 2864 aml_append(dev, aml_name_decl("_CRS", crs)); 2865 2866 for (i = 0; i < MIN(MAX_FD, ACPI_FDE_MAX_FD); i++) { 2867 FloppyDriveType type = isa_fdc_get_drive_type(isadev, i); 2868 2869 if (type < FLOPPY_DRIVE_TYPE_NONE) { 2870 fde_buf[i] = cpu_to_le32(1); /* drive present */ 2871 aml_append(dev, build_fdinfo_aml(i, type)); 2872 } 2873 } 2874 aml_append(dev, aml_name_decl("_FDE", 2875 aml_buffer(sizeof(fde_buf), (uint8_t *)fde_buf))); 2876 2877 aml_append(scope, dev); 2878 } 2879 2880 static const VMStateDescription vmstate_isa_fdc ={ 2881 .name = "fdc", 2882 .version_id = 2, 2883 .minimum_version_id = 2, 2884 .fields = (VMStateField[]) { 2885 VMSTATE_STRUCT(state, FDCtrlISABus, 0, vmstate_fdc, FDCtrl), 2886 VMSTATE_END_OF_LIST() 2887 } 2888 }; 2889 2890 static Property isa_fdc_properties[] = { 2891 DEFINE_PROP_UINT32("iobase", FDCtrlISABus, iobase, 0x3f0), 2892 DEFINE_PROP_UINT32("irq", FDCtrlISABus, irq, 6), 2893 DEFINE_PROP_UINT32("dma", FDCtrlISABus, dma, 2), 2894 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.qdev_for_drives[0].blk), 2895 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.qdev_for_drives[1].blk), 2896 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus, state.check_media_rate, 2897 0, true), 2898 DEFINE_PROP_SIGNED("fdtypeA", FDCtrlISABus, state.qdev_for_drives[0].type, 2899 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2900 FloppyDriveType), 2901 DEFINE_PROP_SIGNED("fdtypeB", FDCtrlISABus, state.qdev_for_drives[1].type, 2902 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2903 FloppyDriveType), 2904 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus, state.fallback, 2905 FLOPPY_DRIVE_TYPE_288, qdev_prop_fdc_drive_type, 2906 FloppyDriveType), 2907 DEFINE_PROP_END_OF_LIST(), 2908 }; 2909 2910 static void isabus_fdc_class_init(ObjectClass *klass, void *data) 2911 { 2912 DeviceClass *dc = DEVICE_CLASS(klass); 2913 ISADeviceClass *isa = ISA_DEVICE_CLASS(klass); 2914 2915 dc->realize = isabus_fdc_realize; 2916 dc->fw_name = "fdc"; 2917 dc->reset = fdctrl_external_reset_isa; 2918 dc->vmsd = &vmstate_isa_fdc; 2919 isa->build_aml = fdc_isa_build_aml; 2920 device_class_set_props(dc, isa_fdc_properties); 2921 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2922 } 2923 2924 static void isabus_fdc_instance_init(Object *obj) 2925 { 2926 FDCtrlISABus *isa = ISA_FDC(obj); 2927 2928 device_add_bootindex_property(obj, &isa->bootindexA, 2929 "bootindexA", "/floppy@0", 2930 DEVICE(obj)); 2931 device_add_bootindex_property(obj, &isa->bootindexB, 2932 "bootindexB", "/floppy@1", 2933 DEVICE(obj)); 2934 } 2935 2936 static const TypeInfo isa_fdc_info = { 2937 .name = TYPE_ISA_FDC, 2938 .parent = TYPE_ISA_DEVICE, 2939 .instance_size = sizeof(FDCtrlISABus), 2940 .class_init = isabus_fdc_class_init, 2941 .instance_init = isabus_fdc_instance_init, 2942 }; 2943 2944 static const VMStateDescription vmstate_sysbus_fdc ={ 2945 .name = "fdc", 2946 .version_id = 2, 2947 .minimum_version_id = 2, 2948 .fields = (VMStateField[]) { 2949 VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl), 2950 VMSTATE_END_OF_LIST() 2951 } 2952 }; 2953 2954 static Property sysbus_fdc_properties[] = { 2955 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.qdev_for_drives[0].blk), 2956 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.qdev_for_drives[1].blk), 2957 DEFINE_PROP_SIGNED("fdtypeA", FDCtrlSysBus, state.qdev_for_drives[0].type, 2958 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2959 FloppyDriveType), 2960 DEFINE_PROP_SIGNED("fdtypeB", FDCtrlSysBus, state.qdev_for_drives[1].type, 2961 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2962 FloppyDriveType), 2963 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus, state.fallback, 2964 FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type, 2965 FloppyDriveType), 2966 DEFINE_PROP_END_OF_LIST(), 2967 }; 2968 2969 static void sysbus_fdc_class_init(ObjectClass *klass, void *data) 2970 { 2971 DeviceClass *dc = DEVICE_CLASS(klass); 2972 2973 device_class_set_props(dc, sysbus_fdc_properties); 2974 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2975 } 2976 2977 static const TypeInfo sysbus_fdc_info = { 2978 .name = "sysbus-fdc", 2979 .parent = TYPE_SYSBUS_FDC, 2980 .instance_init = sysbus_fdc_initfn, 2981 .class_init = sysbus_fdc_class_init, 2982 }; 2983 2984 static Property sun4m_fdc_properties[] = { 2985 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.qdev_for_drives[0].blk), 2986 DEFINE_PROP_SIGNED("fdtype", FDCtrlSysBus, state.qdev_for_drives[0].type, 2987 FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, 2988 FloppyDriveType), 2989 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus, state.fallback, 2990 FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type, 2991 FloppyDriveType), 2992 DEFINE_PROP_END_OF_LIST(), 2993 }; 2994 2995 static void sun4m_fdc_class_init(ObjectClass *klass, void *data) 2996 { 2997 DeviceClass *dc = DEVICE_CLASS(klass); 2998 2999 device_class_set_props(dc, sun4m_fdc_properties); 3000 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 3001 } 3002 3003 static const TypeInfo sun4m_fdc_info = { 3004 .name = "SUNW,fdtwo", 3005 .parent = TYPE_SYSBUS_FDC, 3006 .instance_init = sun4m_fdc_initfn, 3007 .class_init = sun4m_fdc_class_init, 3008 }; 3009 3010 static void sysbus_fdc_common_class_init(ObjectClass *klass, void *data) 3011 { 3012 DeviceClass *dc = DEVICE_CLASS(klass); 3013 3014 dc->realize = sysbus_fdc_common_realize; 3015 dc->reset = fdctrl_external_reset_sysbus; 3016 dc->vmsd = &vmstate_sysbus_fdc; 3017 } 3018 3019 static const TypeInfo sysbus_fdc_type_info = { 3020 .name = TYPE_SYSBUS_FDC, 3021 .parent = TYPE_SYS_BUS_DEVICE, 3022 .instance_size = sizeof(FDCtrlSysBus), 3023 .instance_init = sysbus_fdc_common_initfn, 3024 .abstract = true, 3025 .class_init = sysbus_fdc_common_class_init, 3026 }; 3027 3028 static void fdc_register_types(void) 3029 { 3030 type_register_static(&isa_fdc_info); 3031 type_register_static(&sysbus_fdc_type_info); 3032 type_register_static(&sysbus_fdc_info); 3033 type_register_static(&sun4m_fdc_info); 3034 type_register_static(&floppy_bus_info); 3035 type_register_static(&floppy_drive_info); 3036 } 3037 3038 type_init(fdc_register_types) 3039