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 "hw/hw.h" 31 #include "hw/block/fdc.h" 32 #include "qemu/error-report.h" 33 #include "qemu/timer.h" 34 #include "hw/isa/isa.h" 35 #include "hw/sysbus.h" 36 #include "sysemu/blockdev.h" 37 #include "sysemu/sysemu.h" 38 #include "qemu/log.h" 39 40 /********************************************************/ 41 /* debug Floppy devices */ 42 //#define DEBUG_FLOPPY 43 44 #ifdef DEBUG_FLOPPY 45 #define FLOPPY_DPRINTF(fmt, ...) \ 46 do { printf("FLOPPY: " fmt , ## __VA_ARGS__); } while (0) 47 #else 48 #define FLOPPY_DPRINTF(fmt, ...) 49 #endif 50 51 /********************************************************/ 52 /* Floppy drive emulation */ 53 54 typedef enum FDriveRate { 55 FDRIVE_RATE_500K = 0x00, /* 500 Kbps */ 56 FDRIVE_RATE_300K = 0x01, /* 300 Kbps */ 57 FDRIVE_RATE_250K = 0x02, /* 250 Kbps */ 58 FDRIVE_RATE_1M = 0x03, /* 1 Mbps */ 59 } FDriveRate; 60 61 typedef struct FDFormat { 62 FDriveType drive; 63 uint8_t last_sect; 64 uint8_t max_track; 65 uint8_t max_head; 66 FDriveRate rate; 67 } FDFormat; 68 69 static const FDFormat fd_formats[] = { 70 /* First entry is default format */ 71 /* 1.44 MB 3"1/2 floppy disks */ 72 { FDRIVE_DRV_144, 18, 80, 1, FDRIVE_RATE_500K, }, 73 { FDRIVE_DRV_144, 20, 80, 1, FDRIVE_RATE_500K, }, 74 { FDRIVE_DRV_144, 21, 80, 1, FDRIVE_RATE_500K, }, 75 { FDRIVE_DRV_144, 21, 82, 1, FDRIVE_RATE_500K, }, 76 { FDRIVE_DRV_144, 21, 83, 1, FDRIVE_RATE_500K, }, 77 { FDRIVE_DRV_144, 22, 80, 1, FDRIVE_RATE_500K, }, 78 { FDRIVE_DRV_144, 23, 80, 1, FDRIVE_RATE_500K, }, 79 { FDRIVE_DRV_144, 24, 80, 1, FDRIVE_RATE_500K, }, 80 /* 2.88 MB 3"1/2 floppy disks */ 81 { FDRIVE_DRV_288, 36, 80, 1, FDRIVE_RATE_1M, }, 82 { FDRIVE_DRV_288, 39, 80, 1, FDRIVE_RATE_1M, }, 83 { FDRIVE_DRV_288, 40, 80, 1, FDRIVE_RATE_1M, }, 84 { FDRIVE_DRV_288, 44, 80, 1, FDRIVE_RATE_1M, }, 85 { FDRIVE_DRV_288, 48, 80, 1, FDRIVE_RATE_1M, }, 86 /* 720 kB 3"1/2 floppy disks */ 87 { FDRIVE_DRV_144, 9, 80, 1, FDRIVE_RATE_250K, }, 88 { FDRIVE_DRV_144, 10, 80, 1, FDRIVE_RATE_250K, }, 89 { FDRIVE_DRV_144, 10, 82, 1, FDRIVE_RATE_250K, }, 90 { FDRIVE_DRV_144, 10, 83, 1, FDRIVE_RATE_250K, }, 91 { FDRIVE_DRV_144, 13, 80, 1, FDRIVE_RATE_250K, }, 92 { FDRIVE_DRV_144, 14, 80, 1, FDRIVE_RATE_250K, }, 93 /* 1.2 MB 5"1/4 floppy disks */ 94 { FDRIVE_DRV_120, 15, 80, 1, FDRIVE_RATE_500K, }, 95 { FDRIVE_DRV_120, 18, 80, 1, FDRIVE_RATE_500K, }, 96 { FDRIVE_DRV_120, 18, 82, 1, FDRIVE_RATE_500K, }, 97 { FDRIVE_DRV_120, 18, 83, 1, FDRIVE_RATE_500K, }, 98 { FDRIVE_DRV_120, 20, 80, 1, FDRIVE_RATE_500K, }, 99 /* 720 kB 5"1/4 floppy disks */ 100 { FDRIVE_DRV_120, 9, 80, 1, FDRIVE_RATE_250K, }, 101 { FDRIVE_DRV_120, 11, 80, 1, FDRIVE_RATE_250K, }, 102 /* 360 kB 5"1/4 floppy disks */ 103 { FDRIVE_DRV_120, 9, 40, 1, FDRIVE_RATE_300K, }, 104 { FDRIVE_DRV_120, 9, 40, 0, FDRIVE_RATE_300K, }, 105 { FDRIVE_DRV_120, 10, 41, 1, FDRIVE_RATE_300K, }, 106 { FDRIVE_DRV_120, 10, 42, 1, FDRIVE_RATE_300K, }, 107 /* 320 kB 5"1/4 floppy disks */ 108 { FDRIVE_DRV_120, 8, 40, 1, FDRIVE_RATE_250K, }, 109 { FDRIVE_DRV_120, 8, 40, 0, FDRIVE_RATE_250K, }, 110 /* 360 kB must match 5"1/4 better than 3"1/2... */ 111 { FDRIVE_DRV_144, 9, 80, 0, FDRIVE_RATE_250K, }, 112 /* end */ 113 { FDRIVE_DRV_NONE, -1, -1, 0, 0, }, 114 }; 115 116 static void pick_geometry(BlockDriverState *bs, int *nb_heads, 117 int *max_track, int *last_sect, 118 FDriveType drive_in, FDriveType *drive, 119 FDriveRate *rate) 120 { 121 const FDFormat *parse; 122 uint64_t nb_sectors, size; 123 int i, first_match, match; 124 125 bdrv_get_geometry(bs, &nb_sectors); 126 match = -1; 127 first_match = -1; 128 for (i = 0; ; i++) { 129 parse = &fd_formats[i]; 130 if (parse->drive == FDRIVE_DRV_NONE) { 131 break; 132 } 133 if (drive_in == parse->drive || 134 drive_in == FDRIVE_DRV_NONE) { 135 size = (parse->max_head + 1) * parse->max_track * 136 parse->last_sect; 137 if (nb_sectors == size) { 138 match = i; 139 break; 140 } 141 if (first_match == -1) { 142 first_match = i; 143 } 144 } 145 } 146 if (match == -1) { 147 if (first_match == -1) { 148 match = 1; 149 } else { 150 match = first_match; 151 } 152 parse = &fd_formats[match]; 153 } 154 *nb_heads = parse->max_head + 1; 155 *max_track = parse->max_track; 156 *last_sect = parse->last_sect; 157 *drive = parse->drive; 158 *rate = parse->rate; 159 } 160 161 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv) 162 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive)) 163 164 /* Will always be a fixed parameter for us */ 165 #define FD_SECTOR_LEN 512 166 #define FD_SECTOR_SC 2 /* Sector size code */ 167 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */ 168 169 typedef struct FDCtrl FDCtrl; 170 171 /* Floppy disk drive emulation */ 172 typedef enum FDiskFlags { 173 FDISK_DBL_SIDES = 0x01, 174 } FDiskFlags; 175 176 typedef struct FDrive { 177 FDCtrl *fdctrl; 178 BlockDriverState *bs; 179 /* Drive status */ 180 FDriveType drive; 181 uint8_t perpendicular; /* 2.88 MB access mode */ 182 /* Position */ 183 uint8_t head; 184 uint8_t track; 185 uint8_t sect; 186 /* Media */ 187 FDiskFlags flags; 188 uint8_t last_sect; /* Nb sector per track */ 189 uint8_t max_track; /* Nb of tracks */ 190 uint16_t bps; /* Bytes per sector */ 191 uint8_t ro; /* Is read-only */ 192 uint8_t media_changed; /* Is media changed */ 193 uint8_t media_rate; /* Data rate of medium */ 194 } FDrive; 195 196 static void fd_init(FDrive *drv) 197 { 198 /* Drive */ 199 drv->drive = FDRIVE_DRV_NONE; 200 drv->perpendicular = 0; 201 /* Disk */ 202 drv->last_sect = 0; 203 drv->max_track = 0; 204 } 205 206 #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1) 207 208 static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect, 209 uint8_t last_sect, uint8_t num_sides) 210 { 211 return (((track * num_sides) + head) * last_sect) + sect - 1; 212 } 213 214 /* Returns current position, in sectors, for given drive */ 215 static int fd_sector(FDrive *drv) 216 { 217 return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect, 218 NUM_SIDES(drv)); 219 } 220 221 /* Seek to a new position: 222 * returns 0 if already on right track 223 * returns 1 if track changed 224 * returns 2 if track is invalid 225 * returns 3 if sector is invalid 226 * returns 4 if seek is disabled 227 */ 228 static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect, 229 int enable_seek) 230 { 231 uint32_t sector; 232 int ret; 233 234 if (track > drv->max_track || 235 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) { 236 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n", 237 head, track, sect, 1, 238 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, 239 drv->max_track, drv->last_sect); 240 return 2; 241 } 242 if (sect > drv->last_sect) { 243 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n", 244 head, track, sect, 1, 245 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, 246 drv->max_track, drv->last_sect); 247 return 3; 248 } 249 sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv)); 250 ret = 0; 251 if (sector != fd_sector(drv)) { 252 #if 0 253 if (!enable_seek) { 254 FLOPPY_DPRINTF("error: no implicit seek %d %02x %02x" 255 " (max=%d %02x %02x)\n", 256 head, track, sect, 1, drv->max_track, 257 drv->last_sect); 258 return 4; 259 } 260 #endif 261 drv->head = head; 262 if (drv->track != track) { 263 if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) { 264 drv->media_changed = 0; 265 } 266 ret = 1; 267 } 268 drv->track = track; 269 drv->sect = sect; 270 } 271 272 if (drv->bs == NULL || !bdrv_is_inserted(drv->bs)) { 273 ret = 2; 274 } 275 276 return ret; 277 } 278 279 /* Set drive back to track 0 */ 280 static void fd_recalibrate(FDrive *drv) 281 { 282 FLOPPY_DPRINTF("recalibrate\n"); 283 fd_seek(drv, 0, 0, 1, 1); 284 } 285 286 /* Revalidate a disk drive after a disk change */ 287 static void fd_revalidate(FDrive *drv) 288 { 289 int nb_heads, max_track, last_sect, ro; 290 FDriveType drive; 291 FDriveRate rate; 292 293 FLOPPY_DPRINTF("revalidate\n"); 294 if (drv->bs != NULL) { 295 ro = bdrv_is_read_only(drv->bs); 296 pick_geometry(drv->bs, &nb_heads, &max_track, 297 &last_sect, drv->drive, &drive, &rate); 298 if (!bdrv_is_inserted(drv->bs)) { 299 FLOPPY_DPRINTF("No disk in drive\n"); 300 } else { 301 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", nb_heads, 302 max_track, last_sect, ro ? "ro" : "rw"); 303 } 304 if (nb_heads == 1) { 305 drv->flags &= ~FDISK_DBL_SIDES; 306 } else { 307 drv->flags |= FDISK_DBL_SIDES; 308 } 309 drv->max_track = max_track; 310 drv->last_sect = last_sect; 311 drv->ro = ro; 312 drv->drive = drive; 313 drv->media_rate = rate; 314 } else { 315 FLOPPY_DPRINTF("No drive connected\n"); 316 drv->last_sect = 0; 317 drv->max_track = 0; 318 drv->flags &= ~FDISK_DBL_SIDES; 319 } 320 } 321 322 /********************************************************/ 323 /* Intel 82078 floppy disk controller emulation */ 324 325 static void fdctrl_reset(FDCtrl *fdctrl, int do_irq); 326 static void fdctrl_reset_fifo(FDCtrl *fdctrl); 327 static int fdctrl_transfer_handler (void *opaque, int nchan, 328 int dma_pos, int dma_len); 329 static void fdctrl_raise_irq(FDCtrl *fdctrl); 330 static FDrive *get_cur_drv(FDCtrl *fdctrl); 331 332 static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl); 333 static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl); 334 static uint32_t fdctrl_read_dor(FDCtrl *fdctrl); 335 static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value); 336 static uint32_t fdctrl_read_tape(FDCtrl *fdctrl); 337 static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value); 338 static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl); 339 static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value); 340 static uint32_t fdctrl_read_data(FDCtrl *fdctrl); 341 static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value); 342 static uint32_t fdctrl_read_dir(FDCtrl *fdctrl); 343 static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value); 344 345 enum { 346 FD_DIR_WRITE = 0, 347 FD_DIR_READ = 1, 348 FD_DIR_SCANE = 2, 349 FD_DIR_SCANL = 3, 350 FD_DIR_SCANH = 4, 351 FD_DIR_VERIFY = 5, 352 }; 353 354 enum { 355 FD_STATE_MULTI = 0x01, /* multi track flag */ 356 FD_STATE_FORMAT = 0x02, /* format flag */ 357 }; 358 359 enum { 360 FD_REG_SRA = 0x00, 361 FD_REG_SRB = 0x01, 362 FD_REG_DOR = 0x02, 363 FD_REG_TDR = 0x03, 364 FD_REG_MSR = 0x04, 365 FD_REG_DSR = 0x04, 366 FD_REG_FIFO = 0x05, 367 FD_REG_DIR = 0x07, 368 FD_REG_CCR = 0x07, 369 }; 370 371 enum { 372 FD_CMD_READ_TRACK = 0x02, 373 FD_CMD_SPECIFY = 0x03, 374 FD_CMD_SENSE_DRIVE_STATUS = 0x04, 375 FD_CMD_WRITE = 0x05, 376 FD_CMD_READ = 0x06, 377 FD_CMD_RECALIBRATE = 0x07, 378 FD_CMD_SENSE_INTERRUPT_STATUS = 0x08, 379 FD_CMD_WRITE_DELETED = 0x09, 380 FD_CMD_READ_ID = 0x0a, 381 FD_CMD_READ_DELETED = 0x0c, 382 FD_CMD_FORMAT_TRACK = 0x0d, 383 FD_CMD_DUMPREG = 0x0e, 384 FD_CMD_SEEK = 0x0f, 385 FD_CMD_VERSION = 0x10, 386 FD_CMD_SCAN_EQUAL = 0x11, 387 FD_CMD_PERPENDICULAR_MODE = 0x12, 388 FD_CMD_CONFIGURE = 0x13, 389 FD_CMD_LOCK = 0x14, 390 FD_CMD_VERIFY = 0x16, 391 FD_CMD_POWERDOWN_MODE = 0x17, 392 FD_CMD_PART_ID = 0x18, 393 FD_CMD_SCAN_LOW_OR_EQUAL = 0x19, 394 FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d, 395 FD_CMD_SAVE = 0x2e, 396 FD_CMD_OPTION = 0x33, 397 FD_CMD_RESTORE = 0x4e, 398 FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e, 399 FD_CMD_RELATIVE_SEEK_OUT = 0x8f, 400 FD_CMD_FORMAT_AND_WRITE = 0xcd, 401 FD_CMD_RELATIVE_SEEK_IN = 0xcf, 402 }; 403 404 enum { 405 FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */ 406 FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */ 407 FD_CONFIG_POLL = 0x10, /* Poll enabled */ 408 FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */ 409 FD_CONFIG_EIS = 0x40, /* No implied seeks */ 410 }; 411 412 enum { 413 FD_SR0_DS0 = 0x01, 414 FD_SR0_DS1 = 0x02, 415 FD_SR0_HEAD = 0x04, 416 FD_SR0_EQPMT = 0x10, 417 FD_SR0_SEEK = 0x20, 418 FD_SR0_ABNTERM = 0x40, 419 FD_SR0_INVCMD = 0x80, 420 FD_SR0_RDYCHG = 0xc0, 421 }; 422 423 enum { 424 FD_SR1_MA = 0x01, /* Missing address mark */ 425 FD_SR1_NW = 0x02, /* Not writable */ 426 FD_SR1_EC = 0x80, /* End of cylinder */ 427 }; 428 429 enum { 430 FD_SR2_SNS = 0x04, /* Scan not satisfied */ 431 FD_SR2_SEH = 0x08, /* Scan equal hit */ 432 }; 433 434 enum { 435 FD_SRA_DIR = 0x01, 436 FD_SRA_nWP = 0x02, 437 FD_SRA_nINDX = 0x04, 438 FD_SRA_HDSEL = 0x08, 439 FD_SRA_nTRK0 = 0x10, 440 FD_SRA_STEP = 0x20, 441 FD_SRA_nDRV2 = 0x40, 442 FD_SRA_INTPEND = 0x80, 443 }; 444 445 enum { 446 FD_SRB_MTR0 = 0x01, 447 FD_SRB_MTR1 = 0x02, 448 FD_SRB_WGATE = 0x04, 449 FD_SRB_RDATA = 0x08, 450 FD_SRB_WDATA = 0x10, 451 FD_SRB_DR0 = 0x20, 452 }; 453 454 enum { 455 #if MAX_FD == 4 456 FD_DOR_SELMASK = 0x03, 457 #else 458 FD_DOR_SELMASK = 0x01, 459 #endif 460 FD_DOR_nRESET = 0x04, 461 FD_DOR_DMAEN = 0x08, 462 FD_DOR_MOTEN0 = 0x10, 463 FD_DOR_MOTEN1 = 0x20, 464 FD_DOR_MOTEN2 = 0x40, 465 FD_DOR_MOTEN3 = 0x80, 466 }; 467 468 enum { 469 #if MAX_FD == 4 470 FD_TDR_BOOTSEL = 0x0c, 471 #else 472 FD_TDR_BOOTSEL = 0x04, 473 #endif 474 }; 475 476 enum { 477 FD_DSR_DRATEMASK= 0x03, 478 FD_DSR_PWRDOWN = 0x40, 479 FD_DSR_SWRESET = 0x80, 480 }; 481 482 enum { 483 FD_MSR_DRV0BUSY = 0x01, 484 FD_MSR_DRV1BUSY = 0x02, 485 FD_MSR_DRV2BUSY = 0x04, 486 FD_MSR_DRV3BUSY = 0x08, 487 FD_MSR_CMDBUSY = 0x10, 488 FD_MSR_NONDMA = 0x20, 489 FD_MSR_DIO = 0x40, 490 FD_MSR_RQM = 0x80, 491 }; 492 493 enum { 494 FD_DIR_DSKCHG = 0x80, 495 }; 496 497 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI) 498 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT) 499 500 struct FDCtrl { 501 MemoryRegion iomem; 502 qemu_irq irq; 503 /* Controller state */ 504 QEMUTimer *result_timer; 505 int dma_chann; 506 /* Controller's identification */ 507 uint8_t version; 508 /* HW */ 509 uint8_t sra; 510 uint8_t srb; 511 uint8_t dor; 512 uint8_t dor_vmstate; /* only used as temp during vmstate */ 513 uint8_t tdr; 514 uint8_t dsr; 515 uint8_t msr; 516 uint8_t cur_drv; 517 uint8_t status0; 518 uint8_t status1; 519 uint8_t status2; 520 /* Command FIFO */ 521 uint8_t *fifo; 522 int32_t fifo_size; 523 uint32_t data_pos; 524 uint32_t data_len; 525 uint8_t data_state; 526 uint8_t data_dir; 527 uint8_t eot; /* last wanted sector */ 528 /* States kept only to be returned back */ 529 /* precompensation */ 530 uint8_t precomp_trk; 531 uint8_t config; 532 uint8_t lock; 533 /* Power down config (also with status regB access mode */ 534 uint8_t pwrd; 535 /* Floppy drives */ 536 uint8_t num_floppies; 537 /* Sun4m quirks? */ 538 int sun4m; 539 FDrive drives[MAX_FD]; 540 int reset_sensei; 541 uint32_t check_media_rate; 542 /* Timers state */ 543 uint8_t timer0; 544 uint8_t timer1; 545 }; 546 547 #define TYPE_SYSBUS_FDC "base-sysbus-fdc" 548 #define SYSBUS_FDC(obj) OBJECT_CHECK(FDCtrlSysBus, (obj), TYPE_SYSBUS_FDC) 549 550 typedef struct FDCtrlSysBus { 551 /*< private >*/ 552 SysBusDevice parent_obj; 553 /*< public >*/ 554 555 struct FDCtrl state; 556 } FDCtrlSysBus; 557 558 #define ISA_FDC(obj) OBJECT_CHECK(FDCtrlISABus, (obj), TYPE_ISA_FDC) 559 560 typedef struct FDCtrlISABus { 561 ISADevice parent_obj; 562 563 uint32_t iobase; 564 uint32_t irq; 565 uint32_t dma; 566 struct FDCtrl state; 567 int32_t bootindexA; 568 int32_t bootindexB; 569 } FDCtrlISABus; 570 571 static uint32_t fdctrl_read (void *opaque, uint32_t reg) 572 { 573 FDCtrl *fdctrl = opaque; 574 uint32_t retval; 575 576 reg &= 7; 577 switch (reg) { 578 case FD_REG_SRA: 579 retval = fdctrl_read_statusA(fdctrl); 580 break; 581 case FD_REG_SRB: 582 retval = fdctrl_read_statusB(fdctrl); 583 break; 584 case FD_REG_DOR: 585 retval = fdctrl_read_dor(fdctrl); 586 break; 587 case FD_REG_TDR: 588 retval = fdctrl_read_tape(fdctrl); 589 break; 590 case FD_REG_MSR: 591 retval = fdctrl_read_main_status(fdctrl); 592 break; 593 case FD_REG_FIFO: 594 retval = fdctrl_read_data(fdctrl); 595 break; 596 case FD_REG_DIR: 597 retval = fdctrl_read_dir(fdctrl); 598 break; 599 default: 600 retval = (uint32_t)(-1); 601 break; 602 } 603 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval); 604 605 return retval; 606 } 607 608 static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value) 609 { 610 FDCtrl *fdctrl = opaque; 611 612 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value); 613 614 reg &= 7; 615 switch (reg) { 616 case FD_REG_DOR: 617 fdctrl_write_dor(fdctrl, value); 618 break; 619 case FD_REG_TDR: 620 fdctrl_write_tape(fdctrl, value); 621 break; 622 case FD_REG_DSR: 623 fdctrl_write_rate(fdctrl, value); 624 break; 625 case FD_REG_FIFO: 626 fdctrl_write_data(fdctrl, value); 627 break; 628 case FD_REG_CCR: 629 fdctrl_write_ccr(fdctrl, value); 630 break; 631 default: 632 break; 633 } 634 } 635 636 static uint64_t fdctrl_read_mem (void *opaque, hwaddr reg, 637 unsigned ize) 638 { 639 return fdctrl_read(opaque, (uint32_t)reg); 640 } 641 642 static void fdctrl_write_mem (void *opaque, hwaddr reg, 643 uint64_t value, unsigned size) 644 { 645 fdctrl_write(opaque, (uint32_t)reg, value); 646 } 647 648 static const MemoryRegionOps fdctrl_mem_ops = { 649 .read = fdctrl_read_mem, 650 .write = fdctrl_write_mem, 651 .endianness = DEVICE_NATIVE_ENDIAN, 652 }; 653 654 static const MemoryRegionOps fdctrl_mem_strict_ops = { 655 .read = fdctrl_read_mem, 656 .write = fdctrl_write_mem, 657 .endianness = DEVICE_NATIVE_ENDIAN, 658 .valid = { 659 .min_access_size = 1, 660 .max_access_size = 1, 661 }, 662 }; 663 664 static bool fdrive_media_changed_needed(void *opaque) 665 { 666 FDrive *drive = opaque; 667 668 return (drive->bs != NULL && drive->media_changed != 1); 669 } 670 671 static const VMStateDescription vmstate_fdrive_media_changed = { 672 .name = "fdrive/media_changed", 673 .version_id = 1, 674 .minimum_version_id = 1, 675 .minimum_version_id_old = 1, 676 .fields = (VMStateField[]) { 677 VMSTATE_UINT8(media_changed, FDrive), 678 VMSTATE_END_OF_LIST() 679 } 680 }; 681 682 static bool fdrive_media_rate_needed(void *opaque) 683 { 684 FDrive *drive = opaque; 685 686 return drive->fdctrl->check_media_rate; 687 } 688 689 static const VMStateDescription vmstate_fdrive_media_rate = { 690 .name = "fdrive/media_rate", 691 .version_id = 1, 692 .minimum_version_id = 1, 693 .minimum_version_id_old = 1, 694 .fields = (VMStateField[]) { 695 VMSTATE_UINT8(media_rate, FDrive), 696 VMSTATE_END_OF_LIST() 697 } 698 }; 699 700 static const VMStateDescription vmstate_fdrive = { 701 .name = "fdrive", 702 .version_id = 1, 703 .minimum_version_id = 1, 704 .minimum_version_id_old = 1, 705 .fields = (VMStateField[]) { 706 VMSTATE_UINT8(head, FDrive), 707 VMSTATE_UINT8(track, FDrive), 708 VMSTATE_UINT8(sect, FDrive), 709 VMSTATE_END_OF_LIST() 710 }, 711 .subsections = (VMStateSubsection[]) { 712 { 713 .vmsd = &vmstate_fdrive_media_changed, 714 .needed = &fdrive_media_changed_needed, 715 } , { 716 .vmsd = &vmstate_fdrive_media_rate, 717 .needed = &fdrive_media_rate_needed, 718 } , { 719 /* empty */ 720 } 721 } 722 }; 723 724 static void fdc_pre_save(void *opaque) 725 { 726 FDCtrl *s = opaque; 727 728 s->dor_vmstate = s->dor | GET_CUR_DRV(s); 729 } 730 731 static int fdc_post_load(void *opaque, int version_id) 732 { 733 FDCtrl *s = opaque; 734 735 SET_CUR_DRV(s, s->dor_vmstate & FD_DOR_SELMASK); 736 s->dor = s->dor_vmstate & ~FD_DOR_SELMASK; 737 return 0; 738 } 739 740 static const VMStateDescription vmstate_fdc = { 741 .name = "fdc", 742 .version_id = 2, 743 .minimum_version_id = 2, 744 .minimum_version_id_old = 2, 745 .pre_save = fdc_pre_save, 746 .post_load = fdc_post_load, 747 .fields = (VMStateField []) { 748 /* Controller State */ 749 VMSTATE_UINT8(sra, FDCtrl), 750 VMSTATE_UINT8(srb, FDCtrl), 751 VMSTATE_UINT8(dor_vmstate, FDCtrl), 752 VMSTATE_UINT8(tdr, FDCtrl), 753 VMSTATE_UINT8(dsr, FDCtrl), 754 VMSTATE_UINT8(msr, FDCtrl), 755 VMSTATE_UINT8(status0, FDCtrl), 756 VMSTATE_UINT8(status1, FDCtrl), 757 VMSTATE_UINT8(status2, FDCtrl), 758 /* Command FIFO */ 759 VMSTATE_VARRAY_INT32(fifo, FDCtrl, fifo_size, 0, vmstate_info_uint8, 760 uint8_t), 761 VMSTATE_UINT32(data_pos, FDCtrl), 762 VMSTATE_UINT32(data_len, FDCtrl), 763 VMSTATE_UINT8(data_state, FDCtrl), 764 VMSTATE_UINT8(data_dir, FDCtrl), 765 VMSTATE_UINT8(eot, FDCtrl), 766 /* States kept only to be returned back */ 767 VMSTATE_UINT8(timer0, FDCtrl), 768 VMSTATE_UINT8(timer1, FDCtrl), 769 VMSTATE_UINT8(precomp_trk, FDCtrl), 770 VMSTATE_UINT8(config, FDCtrl), 771 VMSTATE_UINT8(lock, FDCtrl), 772 VMSTATE_UINT8(pwrd, FDCtrl), 773 VMSTATE_UINT8_EQUAL(num_floppies, FDCtrl), 774 VMSTATE_STRUCT_ARRAY(drives, FDCtrl, MAX_FD, 1, 775 vmstate_fdrive, FDrive), 776 VMSTATE_END_OF_LIST() 777 } 778 }; 779 780 static void fdctrl_external_reset_sysbus(DeviceState *d) 781 { 782 FDCtrlSysBus *sys = SYSBUS_FDC(d); 783 FDCtrl *s = &sys->state; 784 785 fdctrl_reset(s, 0); 786 } 787 788 static void fdctrl_external_reset_isa(DeviceState *d) 789 { 790 FDCtrlISABus *isa = ISA_FDC(d); 791 FDCtrl *s = &isa->state; 792 793 fdctrl_reset(s, 0); 794 } 795 796 static void fdctrl_handle_tc(void *opaque, int irq, int level) 797 { 798 //FDCtrl *s = opaque; 799 800 if (level) { 801 // XXX 802 FLOPPY_DPRINTF("TC pulsed\n"); 803 } 804 } 805 806 /* Change IRQ state */ 807 static void fdctrl_reset_irq(FDCtrl *fdctrl) 808 { 809 fdctrl->status0 = 0; 810 if (!(fdctrl->sra & FD_SRA_INTPEND)) 811 return; 812 FLOPPY_DPRINTF("Reset interrupt\n"); 813 qemu_set_irq(fdctrl->irq, 0); 814 fdctrl->sra &= ~FD_SRA_INTPEND; 815 } 816 817 static void fdctrl_raise_irq(FDCtrl *fdctrl) 818 { 819 /* Sparc mutation */ 820 if (fdctrl->sun4m && (fdctrl->msr & FD_MSR_CMDBUSY)) { 821 /* XXX: not sure */ 822 fdctrl->msr &= ~FD_MSR_CMDBUSY; 823 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO; 824 return; 825 } 826 if (!(fdctrl->sra & FD_SRA_INTPEND)) { 827 qemu_set_irq(fdctrl->irq, 1); 828 fdctrl->sra |= FD_SRA_INTPEND; 829 } 830 831 fdctrl->reset_sensei = 0; 832 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0); 833 } 834 835 /* Reset controller */ 836 static void fdctrl_reset(FDCtrl *fdctrl, int do_irq) 837 { 838 int i; 839 840 FLOPPY_DPRINTF("reset controller\n"); 841 fdctrl_reset_irq(fdctrl); 842 /* Initialise controller */ 843 fdctrl->sra = 0; 844 fdctrl->srb = 0xc0; 845 if (!fdctrl->drives[1].bs) 846 fdctrl->sra |= FD_SRA_nDRV2; 847 fdctrl->cur_drv = 0; 848 fdctrl->dor = FD_DOR_nRESET; 849 fdctrl->dor |= (fdctrl->dma_chann != -1) ? FD_DOR_DMAEN : 0; 850 fdctrl->msr = FD_MSR_RQM; 851 /* FIFO state */ 852 fdctrl->data_pos = 0; 853 fdctrl->data_len = 0; 854 fdctrl->data_state = 0; 855 fdctrl->data_dir = FD_DIR_WRITE; 856 for (i = 0; i < MAX_FD; i++) 857 fd_recalibrate(&fdctrl->drives[i]); 858 fdctrl_reset_fifo(fdctrl); 859 if (do_irq) { 860 fdctrl->status0 |= FD_SR0_RDYCHG; 861 fdctrl_raise_irq(fdctrl); 862 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT; 863 } 864 } 865 866 static inline FDrive *drv0(FDCtrl *fdctrl) 867 { 868 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2]; 869 } 870 871 static inline FDrive *drv1(FDCtrl *fdctrl) 872 { 873 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2)) 874 return &fdctrl->drives[1]; 875 else 876 return &fdctrl->drives[0]; 877 } 878 879 #if MAX_FD == 4 880 static inline FDrive *drv2(FDCtrl *fdctrl) 881 { 882 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2)) 883 return &fdctrl->drives[2]; 884 else 885 return &fdctrl->drives[1]; 886 } 887 888 static inline FDrive *drv3(FDCtrl *fdctrl) 889 { 890 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2)) 891 return &fdctrl->drives[3]; 892 else 893 return &fdctrl->drives[2]; 894 } 895 #endif 896 897 static FDrive *get_cur_drv(FDCtrl *fdctrl) 898 { 899 switch (fdctrl->cur_drv) { 900 case 0: return drv0(fdctrl); 901 case 1: return drv1(fdctrl); 902 #if MAX_FD == 4 903 case 2: return drv2(fdctrl); 904 case 3: return drv3(fdctrl); 905 #endif 906 default: return NULL; 907 } 908 } 909 910 /* Status A register : 0x00 (read-only) */ 911 static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl) 912 { 913 uint32_t retval = fdctrl->sra; 914 915 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval); 916 917 return retval; 918 } 919 920 /* Status B register : 0x01 (read-only) */ 921 static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl) 922 { 923 uint32_t retval = fdctrl->srb; 924 925 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval); 926 927 return retval; 928 } 929 930 /* Digital output register : 0x02 */ 931 static uint32_t fdctrl_read_dor(FDCtrl *fdctrl) 932 { 933 uint32_t retval = fdctrl->dor; 934 935 /* Selected drive */ 936 retval |= fdctrl->cur_drv; 937 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval); 938 939 return retval; 940 } 941 942 static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value) 943 { 944 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value); 945 946 /* Motors */ 947 if (value & FD_DOR_MOTEN0) 948 fdctrl->srb |= FD_SRB_MTR0; 949 else 950 fdctrl->srb &= ~FD_SRB_MTR0; 951 if (value & FD_DOR_MOTEN1) 952 fdctrl->srb |= FD_SRB_MTR1; 953 else 954 fdctrl->srb &= ~FD_SRB_MTR1; 955 956 /* Drive */ 957 if (value & 1) 958 fdctrl->srb |= FD_SRB_DR0; 959 else 960 fdctrl->srb &= ~FD_SRB_DR0; 961 962 /* Reset */ 963 if (!(value & FD_DOR_nRESET)) { 964 if (fdctrl->dor & FD_DOR_nRESET) { 965 FLOPPY_DPRINTF("controller enter RESET state\n"); 966 } 967 } else { 968 if (!(fdctrl->dor & FD_DOR_nRESET)) { 969 FLOPPY_DPRINTF("controller out of RESET state\n"); 970 fdctrl_reset(fdctrl, 1); 971 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 972 } 973 } 974 /* Selected drive */ 975 fdctrl->cur_drv = value & FD_DOR_SELMASK; 976 977 fdctrl->dor = value; 978 } 979 980 /* Tape drive register : 0x03 */ 981 static uint32_t fdctrl_read_tape(FDCtrl *fdctrl) 982 { 983 uint32_t retval = fdctrl->tdr; 984 985 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval); 986 987 return retval; 988 } 989 990 static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value) 991 { 992 /* Reset mode */ 993 if (!(fdctrl->dor & FD_DOR_nRESET)) { 994 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 995 return; 996 } 997 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value); 998 /* Disk boot selection indicator */ 999 fdctrl->tdr = value & FD_TDR_BOOTSEL; 1000 /* Tape indicators: never allow */ 1001 } 1002 1003 /* Main status register : 0x04 (read) */ 1004 static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl) 1005 { 1006 uint32_t retval = fdctrl->msr; 1007 1008 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1009 fdctrl->dor |= FD_DOR_nRESET; 1010 1011 /* Sparc mutation */ 1012 if (fdctrl->sun4m) { 1013 retval |= FD_MSR_DIO; 1014 fdctrl_reset_irq(fdctrl); 1015 }; 1016 1017 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval); 1018 1019 return retval; 1020 } 1021 1022 /* Data select rate register : 0x04 (write) */ 1023 static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value) 1024 { 1025 /* Reset mode */ 1026 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1027 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1028 return; 1029 } 1030 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value); 1031 /* Reset: autoclear */ 1032 if (value & FD_DSR_SWRESET) { 1033 fdctrl->dor &= ~FD_DOR_nRESET; 1034 fdctrl_reset(fdctrl, 1); 1035 fdctrl->dor |= FD_DOR_nRESET; 1036 } 1037 if (value & FD_DSR_PWRDOWN) { 1038 fdctrl_reset(fdctrl, 1); 1039 } 1040 fdctrl->dsr = value; 1041 } 1042 1043 /* Configuration control register: 0x07 (write) */ 1044 static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value) 1045 { 1046 /* Reset mode */ 1047 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1048 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1049 return; 1050 } 1051 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value); 1052 1053 /* Only the rate selection bits used in AT mode, and we 1054 * store those in the DSR. 1055 */ 1056 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) | 1057 (value & FD_DSR_DRATEMASK); 1058 } 1059 1060 static int fdctrl_media_changed(FDrive *drv) 1061 { 1062 return drv->media_changed; 1063 } 1064 1065 /* Digital input register : 0x07 (read-only) */ 1066 static uint32_t fdctrl_read_dir(FDCtrl *fdctrl) 1067 { 1068 uint32_t retval = 0; 1069 1070 if (fdctrl_media_changed(get_cur_drv(fdctrl))) { 1071 retval |= FD_DIR_DSKCHG; 1072 } 1073 if (retval != 0) { 1074 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval); 1075 } 1076 1077 return retval; 1078 } 1079 1080 /* FIFO state control */ 1081 static void fdctrl_reset_fifo(FDCtrl *fdctrl) 1082 { 1083 fdctrl->data_dir = FD_DIR_WRITE; 1084 fdctrl->data_pos = 0; 1085 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO); 1086 } 1087 1088 /* Set FIFO status for the host to read */ 1089 static void fdctrl_set_fifo(FDCtrl *fdctrl, int fifo_len) 1090 { 1091 fdctrl->data_dir = FD_DIR_READ; 1092 fdctrl->data_len = fifo_len; 1093 fdctrl->data_pos = 0; 1094 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO; 1095 } 1096 1097 /* Set an error: unimplemented/unknown command */ 1098 static void fdctrl_unimplemented(FDCtrl *fdctrl, int direction) 1099 { 1100 qemu_log_mask(LOG_UNIMP, "fdc: unimplemented command 0x%02x\n", 1101 fdctrl->fifo[0]); 1102 fdctrl->fifo[0] = FD_SR0_INVCMD; 1103 fdctrl_set_fifo(fdctrl, 1); 1104 } 1105 1106 /* Seek to next sector 1107 * returns 0 when end of track reached (for DBL_SIDES on head 1) 1108 * otherwise returns 1 1109 */ 1110 static int fdctrl_seek_to_next_sect(FDCtrl *fdctrl, FDrive *cur_drv) 1111 { 1112 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n", 1113 cur_drv->head, cur_drv->track, cur_drv->sect, 1114 fd_sector(cur_drv)); 1115 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an 1116 error in fact */ 1117 uint8_t new_head = cur_drv->head; 1118 uint8_t new_track = cur_drv->track; 1119 uint8_t new_sect = cur_drv->sect; 1120 1121 int ret = 1; 1122 1123 if (new_sect >= cur_drv->last_sect || 1124 new_sect == fdctrl->eot) { 1125 new_sect = 1; 1126 if (FD_MULTI_TRACK(fdctrl->data_state)) { 1127 if (new_head == 0 && 1128 (cur_drv->flags & FDISK_DBL_SIDES) != 0) { 1129 new_head = 1; 1130 } else { 1131 new_head = 0; 1132 new_track++; 1133 fdctrl->status0 |= FD_SR0_SEEK; 1134 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0) { 1135 ret = 0; 1136 } 1137 } 1138 } else { 1139 fdctrl->status0 |= FD_SR0_SEEK; 1140 new_track++; 1141 ret = 0; 1142 } 1143 if (ret == 1) { 1144 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n", 1145 new_head, new_track, new_sect, fd_sector(cur_drv)); 1146 } 1147 } else { 1148 new_sect++; 1149 } 1150 fd_seek(cur_drv, new_head, new_track, new_sect, 1); 1151 return ret; 1152 } 1153 1154 /* Callback for transfer end (stop or abort) */ 1155 static void fdctrl_stop_transfer(FDCtrl *fdctrl, uint8_t status0, 1156 uint8_t status1, uint8_t status2) 1157 { 1158 FDrive *cur_drv; 1159 cur_drv = get_cur_drv(fdctrl); 1160 1161 fdctrl->status0 &= ~(FD_SR0_DS0 | FD_SR0_DS1 | FD_SR0_HEAD); 1162 fdctrl->status0 |= GET_CUR_DRV(fdctrl); 1163 if (cur_drv->head) { 1164 fdctrl->status0 |= FD_SR0_HEAD; 1165 } 1166 fdctrl->status0 |= status0; 1167 1168 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n", 1169 status0, status1, status2, fdctrl->status0); 1170 fdctrl->fifo[0] = fdctrl->status0; 1171 fdctrl->fifo[1] = status1; 1172 fdctrl->fifo[2] = status2; 1173 fdctrl->fifo[3] = cur_drv->track; 1174 fdctrl->fifo[4] = cur_drv->head; 1175 fdctrl->fifo[5] = cur_drv->sect; 1176 fdctrl->fifo[6] = FD_SECTOR_SC; 1177 fdctrl->data_dir = FD_DIR_READ; 1178 if (!(fdctrl->msr & FD_MSR_NONDMA)) { 1179 DMA_release_DREQ(fdctrl->dma_chann); 1180 } 1181 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO; 1182 fdctrl->msr &= ~FD_MSR_NONDMA; 1183 1184 fdctrl_set_fifo(fdctrl, 7); 1185 fdctrl_raise_irq(fdctrl); 1186 } 1187 1188 /* Prepare a data transfer (either DMA or FIFO) */ 1189 static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction) 1190 { 1191 FDrive *cur_drv; 1192 uint8_t kh, kt, ks; 1193 1194 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1195 cur_drv = get_cur_drv(fdctrl); 1196 kt = fdctrl->fifo[2]; 1197 kh = fdctrl->fifo[3]; 1198 ks = fdctrl->fifo[4]; 1199 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n", 1200 GET_CUR_DRV(fdctrl), kh, kt, ks, 1201 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, 1202 NUM_SIDES(cur_drv))); 1203 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) { 1204 case 2: 1205 /* sect too big */ 1206 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1207 fdctrl->fifo[3] = kt; 1208 fdctrl->fifo[4] = kh; 1209 fdctrl->fifo[5] = ks; 1210 return; 1211 case 3: 1212 /* track too big */ 1213 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00); 1214 fdctrl->fifo[3] = kt; 1215 fdctrl->fifo[4] = kh; 1216 fdctrl->fifo[5] = ks; 1217 return; 1218 case 4: 1219 /* No seek enabled */ 1220 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1221 fdctrl->fifo[3] = kt; 1222 fdctrl->fifo[4] = kh; 1223 fdctrl->fifo[5] = ks; 1224 return; 1225 case 1: 1226 fdctrl->status0 |= FD_SR0_SEEK; 1227 break; 1228 default: 1229 break; 1230 } 1231 1232 /* Check the data rate. If the programmed data rate does not match 1233 * the currently inserted medium, the operation has to fail. */ 1234 if (fdctrl->check_media_rate && 1235 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) { 1236 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n", 1237 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate); 1238 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00); 1239 fdctrl->fifo[3] = kt; 1240 fdctrl->fifo[4] = kh; 1241 fdctrl->fifo[5] = ks; 1242 return; 1243 } 1244 1245 /* Set the FIFO state */ 1246 fdctrl->data_dir = direction; 1247 fdctrl->data_pos = 0; 1248 assert(fdctrl->msr & FD_MSR_CMDBUSY); 1249 if (fdctrl->fifo[0] & 0x80) 1250 fdctrl->data_state |= FD_STATE_MULTI; 1251 else 1252 fdctrl->data_state &= ~FD_STATE_MULTI; 1253 if (fdctrl->fifo[5] == 0) { 1254 fdctrl->data_len = fdctrl->fifo[8]; 1255 } else { 1256 int tmp; 1257 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]); 1258 tmp = (fdctrl->fifo[6] - ks + 1); 1259 if (fdctrl->fifo[0] & 0x80) 1260 tmp += fdctrl->fifo[6]; 1261 fdctrl->data_len *= tmp; 1262 } 1263 fdctrl->eot = fdctrl->fifo[6]; 1264 if (fdctrl->dor & FD_DOR_DMAEN) { 1265 int dma_mode; 1266 /* DMA transfer are enabled. Check if DMA channel is well programmed */ 1267 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann); 1268 dma_mode = (dma_mode >> 2) & 3; 1269 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n", 1270 dma_mode, direction, 1271 (128 << fdctrl->fifo[5]) * 1272 (cur_drv->last_sect - ks + 1), fdctrl->data_len); 1273 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL || 1274 direction == FD_DIR_SCANH) && dma_mode == 0) || 1275 (direction == FD_DIR_WRITE && dma_mode == 2) || 1276 (direction == FD_DIR_READ && dma_mode == 1) || 1277 (direction == FD_DIR_VERIFY)) { 1278 /* No access is allowed until DMA transfer has completed */ 1279 fdctrl->msr &= ~FD_MSR_RQM; 1280 if (direction != FD_DIR_VERIFY) { 1281 /* Now, we just have to wait for the DMA controller to 1282 * recall us... 1283 */ 1284 DMA_hold_DREQ(fdctrl->dma_chann); 1285 DMA_schedule(fdctrl->dma_chann); 1286 } else { 1287 /* Start transfer */ 1288 fdctrl_transfer_handler(fdctrl, fdctrl->dma_chann, 0, 1289 fdctrl->data_len); 1290 } 1291 return; 1292 } else { 1293 FLOPPY_DPRINTF("bad dma_mode=%d direction=%d\n", dma_mode, 1294 direction); 1295 } 1296 } 1297 FLOPPY_DPRINTF("start non-DMA transfer\n"); 1298 fdctrl->msr |= FD_MSR_NONDMA; 1299 if (direction != FD_DIR_WRITE) 1300 fdctrl->msr |= FD_MSR_DIO; 1301 /* IO based transfer: calculate len */ 1302 fdctrl_raise_irq(fdctrl); 1303 } 1304 1305 /* Prepare a transfer of deleted data */ 1306 static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction) 1307 { 1308 qemu_log_mask(LOG_UNIMP, "fdctrl_start_transfer_del() unimplemented\n"); 1309 1310 /* We don't handle deleted data, 1311 * so we don't return *ANYTHING* 1312 */ 1313 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1314 } 1315 1316 /* handlers for DMA transfers */ 1317 static int fdctrl_transfer_handler (void *opaque, int nchan, 1318 int dma_pos, int dma_len) 1319 { 1320 FDCtrl *fdctrl; 1321 FDrive *cur_drv; 1322 int len, start_pos, rel_pos; 1323 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00; 1324 1325 fdctrl = opaque; 1326 if (fdctrl->msr & FD_MSR_RQM) { 1327 FLOPPY_DPRINTF("Not in DMA transfer mode !\n"); 1328 return 0; 1329 } 1330 cur_drv = get_cur_drv(fdctrl); 1331 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL || 1332 fdctrl->data_dir == FD_DIR_SCANH) 1333 status2 = FD_SR2_SNS; 1334 if (dma_len > fdctrl->data_len) 1335 dma_len = fdctrl->data_len; 1336 if (cur_drv->bs == NULL) { 1337 if (fdctrl->data_dir == FD_DIR_WRITE) 1338 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1339 else 1340 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1341 len = 0; 1342 goto transfer_error; 1343 } 1344 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; 1345 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) { 1346 len = dma_len - fdctrl->data_pos; 1347 if (len + rel_pos > FD_SECTOR_LEN) 1348 len = FD_SECTOR_LEN - rel_pos; 1349 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x " 1350 "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos, 1351 fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head, 1352 cur_drv->track, cur_drv->sect, fd_sector(cur_drv), 1353 fd_sector(cur_drv) * FD_SECTOR_LEN); 1354 if (fdctrl->data_dir != FD_DIR_WRITE || 1355 len < FD_SECTOR_LEN || rel_pos != 0) { 1356 /* READ & SCAN commands and realign to a sector for WRITE */ 1357 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), 1358 fdctrl->fifo, 1) < 0) { 1359 FLOPPY_DPRINTF("Floppy: error getting sector %d\n", 1360 fd_sector(cur_drv)); 1361 /* Sure, image size is too small... */ 1362 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1363 } 1364 } 1365 switch (fdctrl->data_dir) { 1366 case FD_DIR_READ: 1367 /* READ commands */ 1368 DMA_write_memory (nchan, fdctrl->fifo + rel_pos, 1369 fdctrl->data_pos, len); 1370 break; 1371 case FD_DIR_WRITE: 1372 /* WRITE commands */ 1373 if (cur_drv->ro) { 1374 /* Handle readonly medium early, no need to do DMA, touch the 1375 * LED or attempt any writes. A real floppy doesn't attempt 1376 * to write to readonly media either. */ 1377 fdctrl_stop_transfer(fdctrl, 1378 FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW, 1379 0x00); 1380 goto transfer_error; 1381 } 1382 1383 DMA_read_memory (nchan, fdctrl->fifo + rel_pos, 1384 fdctrl->data_pos, len); 1385 if (bdrv_write(cur_drv->bs, fd_sector(cur_drv), 1386 fdctrl->fifo, 1) < 0) { 1387 FLOPPY_DPRINTF("error writing sector %d\n", 1388 fd_sector(cur_drv)); 1389 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1390 goto transfer_error; 1391 } 1392 break; 1393 case FD_DIR_VERIFY: 1394 /* VERIFY commands */ 1395 break; 1396 default: 1397 /* SCAN commands */ 1398 { 1399 uint8_t tmpbuf[FD_SECTOR_LEN]; 1400 int ret; 1401 DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len); 1402 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len); 1403 if (ret == 0) { 1404 status2 = FD_SR2_SEH; 1405 goto end_transfer; 1406 } 1407 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) || 1408 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) { 1409 status2 = 0x00; 1410 goto end_transfer; 1411 } 1412 } 1413 break; 1414 } 1415 fdctrl->data_pos += len; 1416 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; 1417 if (rel_pos == 0) { 1418 /* Seek to next sector */ 1419 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) 1420 break; 1421 } 1422 } 1423 end_transfer: 1424 len = fdctrl->data_pos - start_pos; 1425 FLOPPY_DPRINTF("end transfer %d %d %d\n", 1426 fdctrl->data_pos, len, fdctrl->data_len); 1427 if (fdctrl->data_dir == FD_DIR_SCANE || 1428 fdctrl->data_dir == FD_DIR_SCANL || 1429 fdctrl->data_dir == FD_DIR_SCANH) 1430 status2 = FD_SR2_SEH; 1431 fdctrl->data_len -= len; 1432 fdctrl_stop_transfer(fdctrl, status0, status1, status2); 1433 transfer_error: 1434 1435 return len; 1436 } 1437 1438 /* Data register : 0x05 */ 1439 static uint32_t fdctrl_read_data(FDCtrl *fdctrl) 1440 { 1441 FDrive *cur_drv; 1442 uint32_t retval = 0; 1443 int pos; 1444 1445 cur_drv = get_cur_drv(fdctrl); 1446 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1447 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) { 1448 FLOPPY_DPRINTF("error: controller not ready for reading\n"); 1449 return 0; 1450 } 1451 pos = fdctrl->data_pos; 1452 if (fdctrl->msr & FD_MSR_NONDMA) { 1453 pos %= FD_SECTOR_LEN; 1454 if (pos == 0) { 1455 if (fdctrl->data_pos != 0) 1456 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) { 1457 FLOPPY_DPRINTF("error seeking to next sector %d\n", 1458 fd_sector(cur_drv)); 1459 return 0; 1460 } 1461 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) { 1462 FLOPPY_DPRINTF("error getting sector %d\n", 1463 fd_sector(cur_drv)); 1464 /* Sure, image size is too small... */ 1465 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1466 } 1467 } 1468 } 1469 retval = fdctrl->fifo[pos]; 1470 if (++fdctrl->data_pos == fdctrl->data_len) { 1471 fdctrl->data_pos = 0; 1472 /* Switch from transfer mode to status mode 1473 * then from status mode to command mode 1474 */ 1475 if (fdctrl->msr & FD_MSR_NONDMA) { 1476 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1477 } else { 1478 fdctrl_reset_fifo(fdctrl); 1479 fdctrl_reset_irq(fdctrl); 1480 } 1481 } 1482 FLOPPY_DPRINTF("data register: 0x%02x\n", retval); 1483 1484 return retval; 1485 } 1486 1487 static void fdctrl_format_sector(FDCtrl *fdctrl) 1488 { 1489 FDrive *cur_drv; 1490 uint8_t kh, kt, ks; 1491 1492 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1493 cur_drv = get_cur_drv(fdctrl); 1494 kt = fdctrl->fifo[6]; 1495 kh = fdctrl->fifo[7]; 1496 ks = fdctrl->fifo[8]; 1497 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n", 1498 GET_CUR_DRV(fdctrl), kh, kt, ks, 1499 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, 1500 NUM_SIDES(cur_drv))); 1501 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) { 1502 case 2: 1503 /* sect too big */ 1504 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1505 fdctrl->fifo[3] = kt; 1506 fdctrl->fifo[4] = kh; 1507 fdctrl->fifo[5] = ks; 1508 return; 1509 case 3: 1510 /* track too big */ 1511 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00); 1512 fdctrl->fifo[3] = kt; 1513 fdctrl->fifo[4] = kh; 1514 fdctrl->fifo[5] = ks; 1515 return; 1516 case 4: 1517 /* No seek enabled */ 1518 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1519 fdctrl->fifo[3] = kt; 1520 fdctrl->fifo[4] = kh; 1521 fdctrl->fifo[5] = ks; 1522 return; 1523 case 1: 1524 fdctrl->status0 |= FD_SR0_SEEK; 1525 break; 1526 default: 1527 break; 1528 } 1529 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1530 if (cur_drv->bs == NULL || 1531 bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) { 1532 FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv)); 1533 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1534 } else { 1535 if (cur_drv->sect == cur_drv->last_sect) { 1536 fdctrl->data_state &= ~FD_STATE_FORMAT; 1537 /* Last sector done */ 1538 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1539 } else { 1540 /* More to do */ 1541 fdctrl->data_pos = 0; 1542 fdctrl->data_len = 4; 1543 } 1544 } 1545 } 1546 1547 static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction) 1548 { 1549 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0; 1550 fdctrl->fifo[0] = fdctrl->lock << 4; 1551 fdctrl_set_fifo(fdctrl, 1); 1552 } 1553 1554 static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction) 1555 { 1556 FDrive *cur_drv = get_cur_drv(fdctrl); 1557 1558 /* Drives position */ 1559 fdctrl->fifo[0] = drv0(fdctrl)->track; 1560 fdctrl->fifo[1] = drv1(fdctrl)->track; 1561 #if MAX_FD == 4 1562 fdctrl->fifo[2] = drv2(fdctrl)->track; 1563 fdctrl->fifo[3] = drv3(fdctrl)->track; 1564 #else 1565 fdctrl->fifo[2] = 0; 1566 fdctrl->fifo[3] = 0; 1567 #endif 1568 /* timers */ 1569 fdctrl->fifo[4] = fdctrl->timer0; 1570 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0); 1571 fdctrl->fifo[6] = cur_drv->last_sect; 1572 fdctrl->fifo[7] = (fdctrl->lock << 7) | 1573 (cur_drv->perpendicular << 2); 1574 fdctrl->fifo[8] = fdctrl->config; 1575 fdctrl->fifo[9] = fdctrl->precomp_trk; 1576 fdctrl_set_fifo(fdctrl, 10); 1577 } 1578 1579 static void fdctrl_handle_version(FDCtrl *fdctrl, int direction) 1580 { 1581 /* Controller's version */ 1582 fdctrl->fifo[0] = fdctrl->version; 1583 fdctrl_set_fifo(fdctrl, 1); 1584 } 1585 1586 static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction) 1587 { 1588 fdctrl->fifo[0] = 0x41; /* Stepping 1 */ 1589 fdctrl_set_fifo(fdctrl, 1); 1590 } 1591 1592 static void fdctrl_handle_restore(FDCtrl *fdctrl, int direction) 1593 { 1594 FDrive *cur_drv = get_cur_drv(fdctrl); 1595 1596 /* Drives position */ 1597 drv0(fdctrl)->track = fdctrl->fifo[3]; 1598 drv1(fdctrl)->track = fdctrl->fifo[4]; 1599 #if MAX_FD == 4 1600 drv2(fdctrl)->track = fdctrl->fifo[5]; 1601 drv3(fdctrl)->track = fdctrl->fifo[6]; 1602 #endif 1603 /* timers */ 1604 fdctrl->timer0 = fdctrl->fifo[7]; 1605 fdctrl->timer1 = fdctrl->fifo[8]; 1606 cur_drv->last_sect = fdctrl->fifo[9]; 1607 fdctrl->lock = fdctrl->fifo[10] >> 7; 1608 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF; 1609 fdctrl->config = fdctrl->fifo[11]; 1610 fdctrl->precomp_trk = fdctrl->fifo[12]; 1611 fdctrl->pwrd = fdctrl->fifo[13]; 1612 fdctrl_reset_fifo(fdctrl); 1613 } 1614 1615 static void fdctrl_handle_save(FDCtrl *fdctrl, int direction) 1616 { 1617 FDrive *cur_drv = get_cur_drv(fdctrl); 1618 1619 fdctrl->fifo[0] = 0; 1620 fdctrl->fifo[1] = 0; 1621 /* Drives position */ 1622 fdctrl->fifo[2] = drv0(fdctrl)->track; 1623 fdctrl->fifo[3] = drv1(fdctrl)->track; 1624 #if MAX_FD == 4 1625 fdctrl->fifo[4] = drv2(fdctrl)->track; 1626 fdctrl->fifo[5] = drv3(fdctrl)->track; 1627 #else 1628 fdctrl->fifo[4] = 0; 1629 fdctrl->fifo[5] = 0; 1630 #endif 1631 /* timers */ 1632 fdctrl->fifo[6] = fdctrl->timer0; 1633 fdctrl->fifo[7] = fdctrl->timer1; 1634 fdctrl->fifo[8] = cur_drv->last_sect; 1635 fdctrl->fifo[9] = (fdctrl->lock << 7) | 1636 (cur_drv->perpendicular << 2); 1637 fdctrl->fifo[10] = fdctrl->config; 1638 fdctrl->fifo[11] = fdctrl->precomp_trk; 1639 fdctrl->fifo[12] = fdctrl->pwrd; 1640 fdctrl->fifo[13] = 0; 1641 fdctrl->fifo[14] = 0; 1642 fdctrl_set_fifo(fdctrl, 15); 1643 } 1644 1645 static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction) 1646 { 1647 FDrive *cur_drv = get_cur_drv(fdctrl); 1648 1649 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; 1650 timer_mod(fdctrl->result_timer, 1651 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + (get_ticks_per_sec() / 50)); 1652 } 1653 1654 static void fdctrl_handle_format_track(FDCtrl *fdctrl, int direction) 1655 { 1656 FDrive *cur_drv; 1657 1658 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1659 cur_drv = get_cur_drv(fdctrl); 1660 fdctrl->data_state |= FD_STATE_FORMAT; 1661 if (fdctrl->fifo[0] & 0x80) 1662 fdctrl->data_state |= FD_STATE_MULTI; 1663 else 1664 fdctrl->data_state &= ~FD_STATE_MULTI; 1665 cur_drv->bps = 1666 fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2]; 1667 #if 0 1668 cur_drv->last_sect = 1669 cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] : 1670 fdctrl->fifo[3] / 2; 1671 #else 1672 cur_drv->last_sect = fdctrl->fifo[3]; 1673 #endif 1674 /* TODO: implement format using DMA expected by the Bochs BIOS 1675 * and Linux fdformat (read 3 bytes per sector via DMA and fill 1676 * the sector with the specified fill byte 1677 */ 1678 fdctrl->data_state &= ~FD_STATE_FORMAT; 1679 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1680 } 1681 1682 static void fdctrl_handle_specify(FDCtrl *fdctrl, int direction) 1683 { 1684 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF; 1685 fdctrl->timer1 = fdctrl->fifo[2] >> 1; 1686 if (fdctrl->fifo[2] & 1) 1687 fdctrl->dor &= ~FD_DOR_DMAEN; 1688 else 1689 fdctrl->dor |= FD_DOR_DMAEN; 1690 /* No result back */ 1691 fdctrl_reset_fifo(fdctrl); 1692 } 1693 1694 static void fdctrl_handle_sense_drive_status(FDCtrl *fdctrl, int direction) 1695 { 1696 FDrive *cur_drv; 1697 1698 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1699 cur_drv = get_cur_drv(fdctrl); 1700 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; 1701 /* 1 Byte status back */ 1702 fdctrl->fifo[0] = (cur_drv->ro << 6) | 1703 (cur_drv->track == 0 ? 0x10 : 0x00) | 1704 (cur_drv->head << 2) | 1705 GET_CUR_DRV(fdctrl) | 1706 0x28; 1707 fdctrl_set_fifo(fdctrl, 1); 1708 } 1709 1710 static void fdctrl_handle_recalibrate(FDCtrl *fdctrl, int direction) 1711 { 1712 FDrive *cur_drv; 1713 1714 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1715 cur_drv = get_cur_drv(fdctrl); 1716 fd_recalibrate(cur_drv); 1717 fdctrl_reset_fifo(fdctrl); 1718 /* Raise Interrupt */ 1719 fdctrl->status0 |= FD_SR0_SEEK; 1720 fdctrl_raise_irq(fdctrl); 1721 } 1722 1723 static void fdctrl_handle_sense_interrupt_status(FDCtrl *fdctrl, int direction) 1724 { 1725 FDrive *cur_drv = get_cur_drv(fdctrl); 1726 1727 if (fdctrl->reset_sensei > 0) { 1728 fdctrl->fifo[0] = 1729 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei; 1730 fdctrl->reset_sensei--; 1731 } else if (!(fdctrl->sra & FD_SRA_INTPEND)) { 1732 fdctrl->fifo[0] = FD_SR0_INVCMD; 1733 fdctrl_set_fifo(fdctrl, 1); 1734 return; 1735 } else { 1736 fdctrl->fifo[0] = 1737 (fdctrl->status0 & ~(FD_SR0_HEAD | FD_SR0_DS1 | FD_SR0_DS0)) 1738 | GET_CUR_DRV(fdctrl); 1739 } 1740 1741 fdctrl->fifo[1] = cur_drv->track; 1742 fdctrl_set_fifo(fdctrl, 2); 1743 fdctrl_reset_irq(fdctrl); 1744 fdctrl->status0 = FD_SR0_RDYCHG; 1745 } 1746 1747 static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction) 1748 { 1749 FDrive *cur_drv; 1750 1751 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1752 cur_drv = get_cur_drv(fdctrl); 1753 fdctrl_reset_fifo(fdctrl); 1754 /* The seek command just sends step pulses to the drive and doesn't care if 1755 * there is a medium inserted of if it's banging the head against the drive. 1756 */ 1757 fd_seek(cur_drv, cur_drv->head, fdctrl->fifo[2], cur_drv->sect, 1); 1758 /* Raise Interrupt */ 1759 fdctrl->status0 |= FD_SR0_SEEK; 1760 fdctrl_raise_irq(fdctrl); 1761 } 1762 1763 static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction) 1764 { 1765 FDrive *cur_drv = get_cur_drv(fdctrl); 1766 1767 if (fdctrl->fifo[1] & 0x80) 1768 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7; 1769 /* No result back */ 1770 fdctrl_reset_fifo(fdctrl); 1771 } 1772 1773 static void fdctrl_handle_configure(FDCtrl *fdctrl, int direction) 1774 { 1775 fdctrl->config = fdctrl->fifo[2]; 1776 fdctrl->precomp_trk = fdctrl->fifo[3]; 1777 /* No result back */ 1778 fdctrl_reset_fifo(fdctrl); 1779 } 1780 1781 static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction) 1782 { 1783 fdctrl->pwrd = fdctrl->fifo[1]; 1784 fdctrl->fifo[0] = fdctrl->fifo[1]; 1785 fdctrl_set_fifo(fdctrl, 1); 1786 } 1787 1788 static void fdctrl_handle_option(FDCtrl *fdctrl, int direction) 1789 { 1790 /* No result back */ 1791 fdctrl_reset_fifo(fdctrl); 1792 } 1793 1794 static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction) 1795 { 1796 FDrive *cur_drv = get_cur_drv(fdctrl); 1797 1798 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) { 1799 /* Command parameters done */ 1800 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) { 1801 fdctrl->fifo[0] = fdctrl->fifo[1]; 1802 fdctrl->fifo[2] = 0; 1803 fdctrl->fifo[3] = 0; 1804 fdctrl_set_fifo(fdctrl, 4); 1805 } else { 1806 fdctrl_reset_fifo(fdctrl); 1807 } 1808 } else if (fdctrl->data_len > 7) { 1809 /* ERROR */ 1810 fdctrl->fifo[0] = 0x80 | 1811 (cur_drv->head << 2) | GET_CUR_DRV(fdctrl); 1812 fdctrl_set_fifo(fdctrl, 1); 1813 } 1814 } 1815 1816 static void fdctrl_handle_relative_seek_in(FDCtrl *fdctrl, int direction) 1817 { 1818 FDrive *cur_drv; 1819 1820 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1821 cur_drv = get_cur_drv(fdctrl); 1822 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) { 1823 fd_seek(cur_drv, cur_drv->head, cur_drv->max_track - 1, 1824 cur_drv->sect, 1); 1825 } else { 1826 fd_seek(cur_drv, cur_drv->head, 1827 cur_drv->track + fdctrl->fifo[2], cur_drv->sect, 1); 1828 } 1829 fdctrl_reset_fifo(fdctrl); 1830 /* Raise Interrupt */ 1831 fdctrl->status0 |= FD_SR0_SEEK; 1832 fdctrl_raise_irq(fdctrl); 1833 } 1834 1835 static void fdctrl_handle_relative_seek_out(FDCtrl *fdctrl, int direction) 1836 { 1837 FDrive *cur_drv; 1838 1839 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1840 cur_drv = get_cur_drv(fdctrl); 1841 if (fdctrl->fifo[2] > cur_drv->track) { 1842 fd_seek(cur_drv, cur_drv->head, 0, cur_drv->sect, 1); 1843 } else { 1844 fd_seek(cur_drv, cur_drv->head, 1845 cur_drv->track - fdctrl->fifo[2], cur_drv->sect, 1); 1846 } 1847 fdctrl_reset_fifo(fdctrl); 1848 /* Raise Interrupt */ 1849 fdctrl->status0 |= FD_SR0_SEEK; 1850 fdctrl_raise_irq(fdctrl); 1851 } 1852 1853 static const struct { 1854 uint8_t value; 1855 uint8_t mask; 1856 const char* name; 1857 int parameters; 1858 void (*handler)(FDCtrl *fdctrl, int direction); 1859 int direction; 1860 } handlers[] = { 1861 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ }, 1862 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE }, 1863 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek }, 1864 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status }, 1865 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate }, 1866 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track }, 1867 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ }, 1868 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */ 1869 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */ 1870 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ }, 1871 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE }, 1872 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_start_transfer, FD_DIR_VERIFY }, 1873 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL }, 1874 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH }, 1875 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE }, 1876 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid }, 1877 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify }, 1878 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status }, 1879 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode }, 1880 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure }, 1881 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode }, 1882 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option }, 1883 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command }, 1884 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out }, 1885 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented }, 1886 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in }, 1887 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock }, 1888 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg }, 1889 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version }, 1890 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid }, 1891 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */ 1892 { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */ 1893 }; 1894 /* Associate command to an index in the 'handlers' array */ 1895 static uint8_t command_to_handler[256]; 1896 1897 static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value) 1898 { 1899 FDrive *cur_drv; 1900 int pos; 1901 1902 /* Reset mode */ 1903 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1904 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1905 return; 1906 } 1907 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) { 1908 FLOPPY_DPRINTF("error: controller not ready for writing\n"); 1909 return; 1910 } 1911 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1912 /* Is it write command time ? */ 1913 if (fdctrl->msr & FD_MSR_NONDMA) { 1914 /* FIFO data write */ 1915 pos = fdctrl->data_pos++; 1916 pos %= FD_SECTOR_LEN; 1917 fdctrl->fifo[pos] = value; 1918 if (pos == FD_SECTOR_LEN - 1 || 1919 fdctrl->data_pos == fdctrl->data_len) { 1920 cur_drv = get_cur_drv(fdctrl); 1921 if (bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) { 1922 FLOPPY_DPRINTF("error writing sector %d\n", 1923 fd_sector(cur_drv)); 1924 return; 1925 } 1926 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) { 1927 FLOPPY_DPRINTF("error seeking to next sector %d\n", 1928 fd_sector(cur_drv)); 1929 return; 1930 } 1931 } 1932 /* Switch from transfer mode to status mode 1933 * then from status mode to command mode 1934 */ 1935 if (fdctrl->data_pos == fdctrl->data_len) 1936 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1937 return; 1938 } 1939 if (fdctrl->data_pos == 0) { 1940 /* Command */ 1941 pos = command_to_handler[value & 0xff]; 1942 FLOPPY_DPRINTF("%s command\n", handlers[pos].name); 1943 fdctrl->data_len = handlers[pos].parameters + 1; 1944 fdctrl->msr |= FD_MSR_CMDBUSY; 1945 } 1946 1947 FLOPPY_DPRINTF("%s: %02x\n", __func__, value); 1948 fdctrl->fifo[fdctrl->data_pos++] = value; 1949 if (fdctrl->data_pos == fdctrl->data_len) { 1950 /* We now have all parameters 1951 * and will be able to treat the command 1952 */ 1953 if (fdctrl->data_state & FD_STATE_FORMAT) { 1954 fdctrl_format_sector(fdctrl); 1955 return; 1956 } 1957 1958 pos = command_to_handler[fdctrl->fifo[0] & 0xff]; 1959 FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name); 1960 (*handlers[pos].handler)(fdctrl, handlers[pos].direction); 1961 } 1962 } 1963 1964 static void fdctrl_result_timer(void *opaque) 1965 { 1966 FDCtrl *fdctrl = opaque; 1967 FDrive *cur_drv = get_cur_drv(fdctrl); 1968 1969 /* Pretend we are spinning. 1970 * This is needed for Coherent, which uses READ ID to check for 1971 * sector interleaving. 1972 */ 1973 if (cur_drv->last_sect != 0) { 1974 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1; 1975 } 1976 /* READ_ID can't automatically succeed! */ 1977 if (fdctrl->check_media_rate && 1978 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) { 1979 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n", 1980 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate); 1981 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00); 1982 } else { 1983 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1984 } 1985 } 1986 1987 static void fdctrl_change_cb(void *opaque, bool load) 1988 { 1989 FDrive *drive = opaque; 1990 1991 drive->media_changed = 1; 1992 fd_revalidate(drive); 1993 } 1994 1995 static const BlockDevOps fdctrl_block_ops = { 1996 .change_media_cb = fdctrl_change_cb, 1997 }; 1998 1999 /* Init functions */ 2000 static void fdctrl_connect_drives(FDCtrl *fdctrl, Error **errp) 2001 { 2002 unsigned int i; 2003 FDrive *drive; 2004 2005 for (i = 0; i < MAX_FD; i++) { 2006 drive = &fdctrl->drives[i]; 2007 drive->fdctrl = fdctrl; 2008 2009 if (drive->bs) { 2010 if (bdrv_get_on_error(drive->bs, 0) != BLOCKDEV_ON_ERROR_ENOSPC) { 2011 error_setg(errp, "fdc doesn't support drive option werror"); 2012 return; 2013 } 2014 if (bdrv_get_on_error(drive->bs, 1) != BLOCKDEV_ON_ERROR_REPORT) { 2015 error_setg(errp, "fdc doesn't support drive option rerror"); 2016 return; 2017 } 2018 } 2019 2020 fd_init(drive); 2021 fdctrl_change_cb(drive, 0); 2022 if (drive->bs) { 2023 bdrv_set_dev_ops(drive->bs, &fdctrl_block_ops, drive); 2024 } 2025 } 2026 } 2027 2028 ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds) 2029 { 2030 DeviceState *dev; 2031 ISADevice *isadev; 2032 2033 isadev = isa_try_create(bus, TYPE_ISA_FDC); 2034 if (!isadev) { 2035 return NULL; 2036 } 2037 dev = DEVICE(isadev); 2038 2039 if (fds[0]) { 2040 qdev_prop_set_drive_nofail(dev, "driveA", fds[0]->bdrv); 2041 } 2042 if (fds[1]) { 2043 qdev_prop_set_drive_nofail(dev, "driveB", fds[1]->bdrv); 2044 } 2045 qdev_init_nofail(dev); 2046 2047 return isadev; 2048 } 2049 2050 void fdctrl_init_sysbus(qemu_irq irq, int dma_chann, 2051 hwaddr mmio_base, DriveInfo **fds) 2052 { 2053 FDCtrl *fdctrl; 2054 DeviceState *dev; 2055 SysBusDevice *sbd; 2056 FDCtrlSysBus *sys; 2057 2058 dev = qdev_create(NULL, "sysbus-fdc"); 2059 sys = SYSBUS_FDC(dev); 2060 fdctrl = &sys->state; 2061 fdctrl->dma_chann = dma_chann; /* FIXME */ 2062 if (fds[0]) { 2063 qdev_prop_set_drive_nofail(dev, "driveA", fds[0]->bdrv); 2064 } 2065 if (fds[1]) { 2066 qdev_prop_set_drive_nofail(dev, "driveB", fds[1]->bdrv); 2067 } 2068 qdev_init_nofail(dev); 2069 sbd = SYS_BUS_DEVICE(dev); 2070 sysbus_connect_irq(sbd, 0, irq); 2071 sysbus_mmio_map(sbd, 0, mmio_base); 2072 } 2073 2074 void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base, 2075 DriveInfo **fds, qemu_irq *fdc_tc) 2076 { 2077 DeviceState *dev; 2078 FDCtrlSysBus *sys; 2079 2080 dev = qdev_create(NULL, "SUNW,fdtwo"); 2081 if (fds[0]) { 2082 qdev_prop_set_drive_nofail(dev, "drive", fds[0]->bdrv); 2083 } 2084 qdev_init_nofail(dev); 2085 sys = SYSBUS_FDC(dev); 2086 sysbus_connect_irq(SYS_BUS_DEVICE(sys), 0, irq); 2087 sysbus_mmio_map(SYS_BUS_DEVICE(sys), 0, io_base); 2088 *fdc_tc = qdev_get_gpio_in(dev, 0); 2089 } 2090 2091 static void fdctrl_realize_common(FDCtrl *fdctrl, Error **errp) 2092 { 2093 int i, j; 2094 static int command_tables_inited = 0; 2095 2096 /* Fill 'command_to_handler' lookup table */ 2097 if (!command_tables_inited) { 2098 command_tables_inited = 1; 2099 for (i = ARRAY_SIZE(handlers) - 1; i >= 0; i--) { 2100 for (j = 0; j < sizeof(command_to_handler); j++) { 2101 if ((j & handlers[i].mask) == handlers[i].value) { 2102 command_to_handler[j] = i; 2103 } 2104 } 2105 } 2106 } 2107 2108 FLOPPY_DPRINTF("init controller\n"); 2109 fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN); 2110 fdctrl->fifo_size = 512; 2111 fdctrl->result_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, 2112 fdctrl_result_timer, fdctrl); 2113 2114 fdctrl->version = 0x90; /* Intel 82078 controller */ 2115 fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */ 2116 fdctrl->num_floppies = MAX_FD; 2117 2118 if (fdctrl->dma_chann != -1) { 2119 DMA_register_channel(fdctrl->dma_chann, &fdctrl_transfer_handler, fdctrl); 2120 } 2121 fdctrl_connect_drives(fdctrl, errp); 2122 } 2123 2124 static const MemoryRegionPortio fdc_portio_list[] = { 2125 { 1, 5, 1, .read = fdctrl_read, .write = fdctrl_write }, 2126 { 7, 1, 1, .read = fdctrl_read, .write = fdctrl_write }, 2127 PORTIO_END_OF_LIST(), 2128 }; 2129 2130 static void isabus_fdc_realize(DeviceState *dev, Error **errp) 2131 { 2132 ISADevice *isadev = ISA_DEVICE(dev); 2133 FDCtrlISABus *isa = ISA_FDC(dev); 2134 FDCtrl *fdctrl = &isa->state; 2135 Error *err = NULL; 2136 2137 isa_register_portio_list(isadev, isa->iobase, fdc_portio_list, fdctrl, 2138 "fdc"); 2139 2140 isa_init_irq(isadev, &fdctrl->irq, isa->irq); 2141 fdctrl->dma_chann = isa->dma; 2142 2143 qdev_set_legacy_instance_id(dev, isa->iobase, 2); 2144 fdctrl_realize_common(fdctrl, &err); 2145 if (err != NULL) { 2146 error_propagate(errp, err); 2147 return; 2148 } 2149 2150 add_boot_device_path(isa->bootindexA, dev, "/floppy@0"); 2151 add_boot_device_path(isa->bootindexB, dev, "/floppy@1"); 2152 } 2153 2154 static void sysbus_fdc_initfn(Object *obj) 2155 { 2156 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 2157 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2158 FDCtrl *fdctrl = &sys->state; 2159 2160 fdctrl->dma_chann = -1; 2161 2162 memory_region_init_io(&fdctrl->iomem, obj, &fdctrl_mem_ops, fdctrl, 2163 "fdc", 0x08); 2164 sysbus_init_mmio(sbd, &fdctrl->iomem); 2165 } 2166 2167 static void sun4m_fdc_initfn(Object *obj) 2168 { 2169 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 2170 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2171 FDCtrl *fdctrl = &sys->state; 2172 2173 fdctrl->sun4m = 1; 2174 2175 memory_region_init_io(&fdctrl->iomem, obj, &fdctrl_mem_strict_ops, 2176 fdctrl, "fdctrl", 0x08); 2177 sysbus_init_mmio(sbd, &fdctrl->iomem); 2178 } 2179 2180 static void sysbus_fdc_common_initfn(Object *obj) 2181 { 2182 DeviceState *dev = DEVICE(obj); 2183 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 2184 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2185 FDCtrl *fdctrl = &sys->state; 2186 2187 qdev_set_legacy_instance_id(dev, 0 /* io */, 2); /* FIXME */ 2188 2189 sysbus_init_irq(sbd, &fdctrl->irq); 2190 qdev_init_gpio_in(dev, fdctrl_handle_tc, 1); 2191 } 2192 2193 static void sysbus_fdc_common_realize(DeviceState *dev, Error **errp) 2194 { 2195 FDCtrlSysBus *sys = SYSBUS_FDC(dev); 2196 FDCtrl *fdctrl = &sys->state; 2197 2198 fdctrl_realize_common(fdctrl, errp); 2199 } 2200 2201 FDriveType isa_fdc_get_drive_type(ISADevice *fdc, int i) 2202 { 2203 FDCtrlISABus *isa = ISA_FDC(fdc); 2204 2205 return isa->state.drives[i].drive; 2206 } 2207 2208 static const VMStateDescription vmstate_isa_fdc ={ 2209 .name = "fdc", 2210 .version_id = 2, 2211 .minimum_version_id = 2, 2212 .fields = (VMStateField []) { 2213 VMSTATE_STRUCT(state, FDCtrlISABus, 0, vmstate_fdc, FDCtrl), 2214 VMSTATE_END_OF_LIST() 2215 } 2216 }; 2217 2218 static Property isa_fdc_properties[] = { 2219 DEFINE_PROP_UINT32("iobase", FDCtrlISABus, iobase, 0x3f0), 2220 DEFINE_PROP_UINT32("irq", FDCtrlISABus, irq, 6), 2221 DEFINE_PROP_UINT32("dma", FDCtrlISABus, dma, 2), 2222 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].bs), 2223 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].bs), 2224 DEFINE_PROP_INT32("bootindexA", FDCtrlISABus, bootindexA, -1), 2225 DEFINE_PROP_INT32("bootindexB", FDCtrlISABus, bootindexB, -1), 2226 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus, state.check_media_rate, 2227 0, true), 2228 DEFINE_PROP_END_OF_LIST(), 2229 }; 2230 2231 static void isabus_fdc_class_init(ObjectClass *klass, void *data) 2232 { 2233 DeviceClass *dc = DEVICE_CLASS(klass); 2234 2235 dc->realize = isabus_fdc_realize; 2236 dc->fw_name = "fdc"; 2237 dc->reset = fdctrl_external_reset_isa; 2238 dc->vmsd = &vmstate_isa_fdc; 2239 dc->props = isa_fdc_properties; 2240 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2241 } 2242 2243 static const TypeInfo isa_fdc_info = { 2244 .name = TYPE_ISA_FDC, 2245 .parent = TYPE_ISA_DEVICE, 2246 .instance_size = sizeof(FDCtrlISABus), 2247 .class_init = isabus_fdc_class_init, 2248 }; 2249 2250 static const VMStateDescription vmstate_sysbus_fdc ={ 2251 .name = "fdc", 2252 .version_id = 2, 2253 .minimum_version_id = 2, 2254 .fields = (VMStateField []) { 2255 VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl), 2256 VMSTATE_END_OF_LIST() 2257 } 2258 }; 2259 2260 static Property sysbus_fdc_properties[] = { 2261 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].bs), 2262 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].bs), 2263 DEFINE_PROP_END_OF_LIST(), 2264 }; 2265 2266 static void sysbus_fdc_class_init(ObjectClass *klass, void *data) 2267 { 2268 DeviceClass *dc = DEVICE_CLASS(klass); 2269 2270 dc->props = sysbus_fdc_properties; 2271 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2272 } 2273 2274 static const TypeInfo sysbus_fdc_info = { 2275 .name = "sysbus-fdc", 2276 .parent = TYPE_SYSBUS_FDC, 2277 .instance_init = sysbus_fdc_initfn, 2278 .class_init = sysbus_fdc_class_init, 2279 }; 2280 2281 static Property sun4m_fdc_properties[] = { 2282 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].bs), 2283 DEFINE_PROP_END_OF_LIST(), 2284 }; 2285 2286 static void sun4m_fdc_class_init(ObjectClass *klass, void *data) 2287 { 2288 DeviceClass *dc = DEVICE_CLASS(klass); 2289 2290 dc->props = sun4m_fdc_properties; 2291 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2292 } 2293 2294 static const TypeInfo sun4m_fdc_info = { 2295 .name = "SUNW,fdtwo", 2296 .parent = TYPE_SYSBUS_FDC, 2297 .instance_init = sun4m_fdc_initfn, 2298 .class_init = sun4m_fdc_class_init, 2299 }; 2300 2301 static void sysbus_fdc_common_class_init(ObjectClass *klass, void *data) 2302 { 2303 DeviceClass *dc = DEVICE_CLASS(klass); 2304 2305 dc->realize = sysbus_fdc_common_realize; 2306 dc->reset = fdctrl_external_reset_sysbus; 2307 dc->vmsd = &vmstate_sysbus_fdc; 2308 } 2309 2310 static const TypeInfo sysbus_fdc_type_info = { 2311 .name = TYPE_SYSBUS_FDC, 2312 .parent = TYPE_SYS_BUS_DEVICE, 2313 .instance_size = sizeof(FDCtrlSysBus), 2314 .instance_init = sysbus_fdc_common_initfn, 2315 .abstract = true, 2316 .class_init = sysbus_fdc_common_class_init, 2317 }; 2318 2319 static void fdc_register_types(void) 2320 { 2321 type_register_static(&isa_fdc_info); 2322 type_register_static(&sysbus_fdc_type_info); 2323 type_register_static(&sysbus_fdc_info); 2324 type_register_static(&sun4m_fdc_info); 2325 } 2326 2327 type_init(fdc_register_types) 2328