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/block-backend.h" 37 #include "sysemu/blockdev.h" 38 #include "sysemu/sysemu.h" 39 #include "qemu/log.h" 40 41 /********************************************************/ 42 /* debug Floppy devices */ 43 //#define DEBUG_FLOPPY 44 45 #ifdef DEBUG_FLOPPY 46 #define FLOPPY_DPRINTF(fmt, ...) \ 47 do { printf("FLOPPY: " fmt , ## __VA_ARGS__); } while (0) 48 #else 49 #define FLOPPY_DPRINTF(fmt, ...) 50 #endif 51 52 /********************************************************/ 53 /* Floppy drive emulation */ 54 55 typedef enum FDriveRate { 56 FDRIVE_RATE_500K = 0x00, /* 500 Kbps */ 57 FDRIVE_RATE_300K = 0x01, /* 300 Kbps */ 58 FDRIVE_RATE_250K = 0x02, /* 250 Kbps */ 59 FDRIVE_RATE_1M = 0x03, /* 1 Mbps */ 60 } FDriveRate; 61 62 typedef struct FDFormat { 63 FDriveType drive; 64 uint8_t last_sect; 65 uint8_t max_track; 66 uint8_t max_head; 67 FDriveRate rate; 68 } FDFormat; 69 70 static const FDFormat fd_formats[] = { 71 /* First entry is default format */ 72 /* 1.44 MB 3"1/2 floppy disks */ 73 { FDRIVE_DRV_144, 18, 80, 1, FDRIVE_RATE_500K, }, 74 { FDRIVE_DRV_144, 20, 80, 1, FDRIVE_RATE_500K, }, 75 { FDRIVE_DRV_144, 21, 80, 1, FDRIVE_RATE_500K, }, 76 { FDRIVE_DRV_144, 21, 82, 1, FDRIVE_RATE_500K, }, 77 { FDRIVE_DRV_144, 21, 83, 1, FDRIVE_RATE_500K, }, 78 { FDRIVE_DRV_144, 22, 80, 1, FDRIVE_RATE_500K, }, 79 { FDRIVE_DRV_144, 23, 80, 1, FDRIVE_RATE_500K, }, 80 { FDRIVE_DRV_144, 24, 80, 1, FDRIVE_RATE_500K, }, 81 /* 2.88 MB 3"1/2 floppy disks */ 82 { FDRIVE_DRV_288, 36, 80, 1, FDRIVE_RATE_1M, }, 83 { FDRIVE_DRV_288, 39, 80, 1, FDRIVE_RATE_1M, }, 84 { FDRIVE_DRV_288, 40, 80, 1, FDRIVE_RATE_1M, }, 85 { FDRIVE_DRV_288, 44, 80, 1, FDRIVE_RATE_1M, }, 86 { FDRIVE_DRV_288, 48, 80, 1, FDRIVE_RATE_1M, }, 87 /* 720 kB 3"1/2 floppy disks */ 88 { FDRIVE_DRV_144, 9, 80, 1, FDRIVE_RATE_250K, }, 89 { FDRIVE_DRV_144, 10, 80, 1, FDRIVE_RATE_250K, }, 90 { FDRIVE_DRV_144, 10, 82, 1, FDRIVE_RATE_250K, }, 91 { FDRIVE_DRV_144, 10, 83, 1, FDRIVE_RATE_250K, }, 92 { FDRIVE_DRV_144, 13, 80, 1, FDRIVE_RATE_250K, }, 93 { FDRIVE_DRV_144, 14, 80, 1, FDRIVE_RATE_250K, }, 94 /* 1.2 MB 5"1/4 floppy disks */ 95 { FDRIVE_DRV_120, 15, 80, 1, FDRIVE_RATE_500K, }, 96 { FDRIVE_DRV_120, 18, 80, 1, FDRIVE_RATE_500K, }, 97 { FDRIVE_DRV_120, 18, 82, 1, FDRIVE_RATE_500K, }, 98 { FDRIVE_DRV_120, 18, 83, 1, FDRIVE_RATE_500K, }, 99 { FDRIVE_DRV_120, 20, 80, 1, FDRIVE_RATE_500K, }, 100 /* 720 kB 5"1/4 floppy disks */ 101 { FDRIVE_DRV_120, 9, 80, 1, FDRIVE_RATE_250K, }, 102 { FDRIVE_DRV_120, 11, 80, 1, FDRIVE_RATE_250K, }, 103 /* 360 kB 5"1/4 floppy disks */ 104 { FDRIVE_DRV_120, 9, 40, 1, FDRIVE_RATE_300K, }, 105 { FDRIVE_DRV_120, 9, 40, 0, FDRIVE_RATE_300K, }, 106 { FDRIVE_DRV_120, 10, 41, 1, FDRIVE_RATE_300K, }, 107 { FDRIVE_DRV_120, 10, 42, 1, FDRIVE_RATE_300K, }, 108 /* 320 kB 5"1/4 floppy disks */ 109 { FDRIVE_DRV_120, 8, 40, 1, FDRIVE_RATE_250K, }, 110 { FDRIVE_DRV_120, 8, 40, 0, FDRIVE_RATE_250K, }, 111 /* 360 kB must match 5"1/4 better than 3"1/2... */ 112 { FDRIVE_DRV_144, 9, 80, 0, FDRIVE_RATE_250K, }, 113 /* end */ 114 { FDRIVE_DRV_NONE, -1, -1, 0, 0, }, 115 }; 116 117 static void pick_geometry(BlockBackend *blk, int *nb_heads, 118 int *max_track, int *last_sect, 119 FDriveType drive_in, FDriveType *drive, 120 FDriveRate *rate) 121 { 122 const FDFormat *parse; 123 uint64_t nb_sectors, size; 124 int i, first_match, match; 125 126 blk_get_geometry(blk, &nb_sectors); 127 match = -1; 128 first_match = -1; 129 for (i = 0; ; i++) { 130 parse = &fd_formats[i]; 131 if (parse->drive == FDRIVE_DRV_NONE) { 132 break; 133 } 134 if (drive_in == parse->drive || 135 drive_in == FDRIVE_DRV_NONE) { 136 size = (parse->max_head + 1) * parse->max_track * 137 parse->last_sect; 138 if (nb_sectors == size) { 139 match = i; 140 break; 141 } 142 if (first_match == -1) { 143 first_match = i; 144 } 145 } 146 } 147 if (match == -1) { 148 if (first_match == -1) { 149 match = 1; 150 } else { 151 match = first_match; 152 } 153 parse = &fd_formats[match]; 154 } 155 *nb_heads = parse->max_head + 1; 156 *max_track = parse->max_track; 157 *last_sect = parse->last_sect; 158 *drive = parse->drive; 159 *rate = parse->rate; 160 } 161 162 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv) 163 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive)) 164 165 /* Will always be a fixed parameter for us */ 166 #define FD_SECTOR_LEN 512 167 #define FD_SECTOR_SC 2 /* Sector size code */ 168 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */ 169 170 typedef struct FDCtrl FDCtrl; 171 172 /* Floppy disk drive emulation */ 173 typedef enum FDiskFlags { 174 FDISK_DBL_SIDES = 0x01, 175 } FDiskFlags; 176 177 typedef struct FDrive { 178 FDCtrl *fdctrl; 179 BlockBackend *blk; 180 /* Drive status */ 181 FDriveType drive; 182 uint8_t perpendicular; /* 2.88 MB access mode */ 183 /* Position */ 184 uint8_t head; 185 uint8_t track; 186 uint8_t sect; 187 /* Media */ 188 FDiskFlags flags; 189 uint8_t last_sect; /* Nb sector per track */ 190 uint8_t max_track; /* Nb of tracks */ 191 uint16_t bps; /* Bytes per sector */ 192 uint8_t ro; /* Is read-only */ 193 uint8_t media_changed; /* Is media changed */ 194 uint8_t media_rate; /* Data rate of medium */ 195 } FDrive; 196 197 static void fd_init(FDrive *drv) 198 { 199 /* Drive */ 200 drv->drive = FDRIVE_DRV_NONE; 201 drv->perpendicular = 0; 202 /* Disk */ 203 drv->last_sect = 0; 204 drv->max_track = 0; 205 } 206 207 #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1) 208 209 static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect, 210 uint8_t last_sect, uint8_t num_sides) 211 { 212 return (((track * num_sides) + head) * last_sect) + sect - 1; 213 } 214 215 /* Returns current position, in sectors, for given drive */ 216 static int fd_sector(FDrive *drv) 217 { 218 return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect, 219 NUM_SIDES(drv)); 220 } 221 222 /* Seek to a new position: 223 * returns 0 if already on right track 224 * returns 1 if track changed 225 * returns 2 if track is invalid 226 * returns 3 if sector is invalid 227 * returns 4 if seek is disabled 228 */ 229 static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect, 230 int enable_seek) 231 { 232 uint32_t sector; 233 int ret; 234 235 if (track > drv->max_track || 236 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) { 237 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n", 238 head, track, sect, 1, 239 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, 240 drv->max_track, drv->last_sect); 241 return 2; 242 } 243 if (sect > drv->last_sect) { 244 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n", 245 head, track, sect, 1, 246 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, 247 drv->max_track, drv->last_sect); 248 return 3; 249 } 250 sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv)); 251 ret = 0; 252 if (sector != fd_sector(drv)) { 253 #if 0 254 if (!enable_seek) { 255 FLOPPY_DPRINTF("error: no implicit seek %d %02x %02x" 256 " (max=%d %02x %02x)\n", 257 head, track, sect, 1, drv->max_track, 258 drv->last_sect); 259 return 4; 260 } 261 #endif 262 drv->head = head; 263 if (drv->track != track) { 264 if (drv->blk != NULL && blk_is_inserted(drv->blk)) { 265 drv->media_changed = 0; 266 } 267 ret = 1; 268 } 269 drv->track = track; 270 drv->sect = sect; 271 } 272 273 if (drv->blk == NULL || !blk_is_inserted(drv->blk)) { 274 ret = 2; 275 } 276 277 return ret; 278 } 279 280 /* Set drive back to track 0 */ 281 static void fd_recalibrate(FDrive *drv) 282 { 283 FLOPPY_DPRINTF("recalibrate\n"); 284 fd_seek(drv, 0, 0, 1, 1); 285 } 286 287 /* Revalidate a disk drive after a disk change */ 288 static void fd_revalidate(FDrive *drv) 289 { 290 int nb_heads, max_track, last_sect, ro; 291 FDriveType drive; 292 FDriveRate rate; 293 294 FLOPPY_DPRINTF("revalidate\n"); 295 if (drv->blk != NULL) { 296 ro = blk_is_read_only(drv->blk); 297 pick_geometry(drv->blk, &nb_heads, &max_track, 298 &last_sect, drv->drive, &drive, &rate); 299 if (!blk_is_inserted(drv->blk)) { 300 FLOPPY_DPRINTF("No disk in drive\n"); 301 } else { 302 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", nb_heads, 303 max_track, last_sect, ro ? "ro" : "rw"); 304 } 305 if (nb_heads == 1) { 306 drv->flags &= ~FDISK_DBL_SIDES; 307 } else { 308 drv->flags |= FDISK_DBL_SIDES; 309 } 310 drv->max_track = max_track; 311 drv->last_sect = last_sect; 312 drv->ro = ro; 313 drv->drive = drive; 314 drv->media_rate = rate; 315 } else { 316 FLOPPY_DPRINTF("No drive connected\n"); 317 drv->last_sect = 0; 318 drv->max_track = 0; 319 drv->flags &= ~FDISK_DBL_SIDES; 320 } 321 } 322 323 /********************************************************/ 324 /* Intel 82078 floppy disk controller emulation */ 325 326 static void fdctrl_reset(FDCtrl *fdctrl, int do_irq); 327 static void fdctrl_reset_fifo(FDCtrl *fdctrl); 328 static int fdctrl_transfer_handler (void *opaque, int nchan, 329 int dma_pos, int dma_len); 330 static void fdctrl_raise_irq(FDCtrl *fdctrl); 331 static FDrive *get_cur_drv(FDCtrl *fdctrl); 332 333 static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl); 334 static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl); 335 static uint32_t fdctrl_read_dor(FDCtrl *fdctrl); 336 static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value); 337 static uint32_t fdctrl_read_tape(FDCtrl *fdctrl); 338 static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value); 339 static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl); 340 static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value); 341 static uint32_t fdctrl_read_data(FDCtrl *fdctrl); 342 static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value); 343 static uint32_t fdctrl_read_dir(FDCtrl *fdctrl); 344 static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value); 345 346 enum { 347 FD_DIR_WRITE = 0, 348 FD_DIR_READ = 1, 349 FD_DIR_SCANE = 2, 350 FD_DIR_SCANL = 3, 351 FD_DIR_SCANH = 4, 352 FD_DIR_VERIFY = 5, 353 }; 354 355 enum { 356 FD_STATE_MULTI = 0x01, /* multi track flag */ 357 FD_STATE_FORMAT = 0x02, /* format flag */ 358 }; 359 360 enum { 361 FD_REG_SRA = 0x00, 362 FD_REG_SRB = 0x01, 363 FD_REG_DOR = 0x02, 364 FD_REG_TDR = 0x03, 365 FD_REG_MSR = 0x04, 366 FD_REG_DSR = 0x04, 367 FD_REG_FIFO = 0x05, 368 FD_REG_DIR = 0x07, 369 FD_REG_CCR = 0x07, 370 }; 371 372 enum { 373 FD_CMD_READ_TRACK = 0x02, 374 FD_CMD_SPECIFY = 0x03, 375 FD_CMD_SENSE_DRIVE_STATUS = 0x04, 376 FD_CMD_WRITE = 0x05, 377 FD_CMD_READ = 0x06, 378 FD_CMD_RECALIBRATE = 0x07, 379 FD_CMD_SENSE_INTERRUPT_STATUS = 0x08, 380 FD_CMD_WRITE_DELETED = 0x09, 381 FD_CMD_READ_ID = 0x0a, 382 FD_CMD_READ_DELETED = 0x0c, 383 FD_CMD_FORMAT_TRACK = 0x0d, 384 FD_CMD_DUMPREG = 0x0e, 385 FD_CMD_SEEK = 0x0f, 386 FD_CMD_VERSION = 0x10, 387 FD_CMD_SCAN_EQUAL = 0x11, 388 FD_CMD_PERPENDICULAR_MODE = 0x12, 389 FD_CMD_CONFIGURE = 0x13, 390 FD_CMD_LOCK = 0x14, 391 FD_CMD_VERIFY = 0x16, 392 FD_CMD_POWERDOWN_MODE = 0x17, 393 FD_CMD_PART_ID = 0x18, 394 FD_CMD_SCAN_LOW_OR_EQUAL = 0x19, 395 FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d, 396 FD_CMD_SAVE = 0x2e, 397 FD_CMD_OPTION = 0x33, 398 FD_CMD_RESTORE = 0x4e, 399 FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e, 400 FD_CMD_RELATIVE_SEEK_OUT = 0x8f, 401 FD_CMD_FORMAT_AND_WRITE = 0xcd, 402 FD_CMD_RELATIVE_SEEK_IN = 0xcf, 403 }; 404 405 enum { 406 FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */ 407 FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */ 408 FD_CONFIG_POLL = 0x10, /* Poll enabled */ 409 FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */ 410 FD_CONFIG_EIS = 0x40, /* No implied seeks */ 411 }; 412 413 enum { 414 FD_SR0_DS0 = 0x01, 415 FD_SR0_DS1 = 0x02, 416 FD_SR0_HEAD = 0x04, 417 FD_SR0_EQPMT = 0x10, 418 FD_SR0_SEEK = 0x20, 419 FD_SR0_ABNTERM = 0x40, 420 FD_SR0_INVCMD = 0x80, 421 FD_SR0_RDYCHG = 0xc0, 422 }; 423 424 enum { 425 FD_SR1_MA = 0x01, /* Missing address mark */ 426 FD_SR1_NW = 0x02, /* Not writable */ 427 FD_SR1_EC = 0x80, /* End of cylinder */ 428 }; 429 430 enum { 431 FD_SR2_SNS = 0x04, /* Scan not satisfied */ 432 FD_SR2_SEH = 0x08, /* Scan equal hit */ 433 }; 434 435 enum { 436 FD_SRA_DIR = 0x01, 437 FD_SRA_nWP = 0x02, 438 FD_SRA_nINDX = 0x04, 439 FD_SRA_HDSEL = 0x08, 440 FD_SRA_nTRK0 = 0x10, 441 FD_SRA_STEP = 0x20, 442 FD_SRA_nDRV2 = 0x40, 443 FD_SRA_INTPEND = 0x80, 444 }; 445 446 enum { 447 FD_SRB_MTR0 = 0x01, 448 FD_SRB_MTR1 = 0x02, 449 FD_SRB_WGATE = 0x04, 450 FD_SRB_RDATA = 0x08, 451 FD_SRB_WDATA = 0x10, 452 FD_SRB_DR0 = 0x20, 453 }; 454 455 enum { 456 #if MAX_FD == 4 457 FD_DOR_SELMASK = 0x03, 458 #else 459 FD_DOR_SELMASK = 0x01, 460 #endif 461 FD_DOR_nRESET = 0x04, 462 FD_DOR_DMAEN = 0x08, 463 FD_DOR_MOTEN0 = 0x10, 464 FD_DOR_MOTEN1 = 0x20, 465 FD_DOR_MOTEN2 = 0x40, 466 FD_DOR_MOTEN3 = 0x80, 467 }; 468 469 enum { 470 #if MAX_FD == 4 471 FD_TDR_BOOTSEL = 0x0c, 472 #else 473 FD_TDR_BOOTSEL = 0x04, 474 #endif 475 }; 476 477 enum { 478 FD_DSR_DRATEMASK= 0x03, 479 FD_DSR_PWRDOWN = 0x40, 480 FD_DSR_SWRESET = 0x80, 481 }; 482 483 enum { 484 FD_MSR_DRV0BUSY = 0x01, 485 FD_MSR_DRV1BUSY = 0x02, 486 FD_MSR_DRV2BUSY = 0x04, 487 FD_MSR_DRV3BUSY = 0x08, 488 FD_MSR_CMDBUSY = 0x10, 489 FD_MSR_NONDMA = 0x20, 490 FD_MSR_DIO = 0x40, 491 FD_MSR_RQM = 0x80, 492 }; 493 494 enum { 495 FD_DIR_DSKCHG = 0x80, 496 }; 497 498 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI) 499 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT) 500 501 struct FDCtrl { 502 MemoryRegion iomem; 503 qemu_irq irq; 504 /* Controller state */ 505 QEMUTimer *result_timer; 506 int dma_chann; 507 /* Controller's identification */ 508 uint8_t version; 509 /* HW */ 510 uint8_t sra; 511 uint8_t srb; 512 uint8_t dor; 513 uint8_t dor_vmstate; /* only used as temp during vmstate */ 514 uint8_t tdr; 515 uint8_t dsr; 516 uint8_t msr; 517 uint8_t cur_drv; 518 uint8_t status0; 519 uint8_t status1; 520 uint8_t status2; 521 /* Command FIFO */ 522 uint8_t *fifo; 523 int32_t fifo_size; 524 uint32_t data_pos; 525 uint32_t data_len; 526 uint8_t data_state; 527 uint8_t data_dir; 528 uint8_t eot; /* last wanted sector */ 529 /* States kept only to be returned back */ 530 /* precompensation */ 531 uint8_t precomp_trk; 532 uint8_t config; 533 uint8_t lock; 534 /* Power down config (also with status regB access mode */ 535 uint8_t pwrd; 536 /* Floppy drives */ 537 uint8_t num_floppies; 538 /* Sun4m quirks? */ 539 int sun4m; 540 FDrive drives[MAX_FD]; 541 int reset_sensei; 542 uint32_t check_media_rate; 543 /* Timers state */ 544 uint8_t timer0; 545 uint8_t timer1; 546 }; 547 548 #define TYPE_SYSBUS_FDC "base-sysbus-fdc" 549 #define SYSBUS_FDC(obj) OBJECT_CHECK(FDCtrlSysBus, (obj), TYPE_SYSBUS_FDC) 550 551 typedef struct FDCtrlSysBus { 552 /*< private >*/ 553 SysBusDevice parent_obj; 554 /*< public >*/ 555 556 struct FDCtrl state; 557 } FDCtrlSysBus; 558 559 #define ISA_FDC(obj) OBJECT_CHECK(FDCtrlISABus, (obj), TYPE_ISA_FDC) 560 561 typedef struct FDCtrlISABus { 562 ISADevice parent_obj; 563 564 uint32_t iobase; 565 uint32_t irq; 566 uint32_t dma; 567 struct FDCtrl state; 568 int32_t bootindexA; 569 int32_t bootindexB; 570 } FDCtrlISABus; 571 572 static uint32_t fdctrl_read (void *opaque, uint32_t reg) 573 { 574 FDCtrl *fdctrl = opaque; 575 uint32_t retval; 576 577 reg &= 7; 578 switch (reg) { 579 case FD_REG_SRA: 580 retval = fdctrl_read_statusA(fdctrl); 581 break; 582 case FD_REG_SRB: 583 retval = fdctrl_read_statusB(fdctrl); 584 break; 585 case FD_REG_DOR: 586 retval = fdctrl_read_dor(fdctrl); 587 break; 588 case FD_REG_TDR: 589 retval = fdctrl_read_tape(fdctrl); 590 break; 591 case FD_REG_MSR: 592 retval = fdctrl_read_main_status(fdctrl); 593 break; 594 case FD_REG_FIFO: 595 retval = fdctrl_read_data(fdctrl); 596 break; 597 case FD_REG_DIR: 598 retval = fdctrl_read_dir(fdctrl); 599 break; 600 default: 601 retval = (uint32_t)(-1); 602 break; 603 } 604 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval); 605 606 return retval; 607 } 608 609 static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value) 610 { 611 FDCtrl *fdctrl = opaque; 612 613 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value); 614 615 reg &= 7; 616 switch (reg) { 617 case FD_REG_DOR: 618 fdctrl_write_dor(fdctrl, value); 619 break; 620 case FD_REG_TDR: 621 fdctrl_write_tape(fdctrl, value); 622 break; 623 case FD_REG_DSR: 624 fdctrl_write_rate(fdctrl, value); 625 break; 626 case FD_REG_FIFO: 627 fdctrl_write_data(fdctrl, value); 628 break; 629 case FD_REG_CCR: 630 fdctrl_write_ccr(fdctrl, value); 631 break; 632 default: 633 break; 634 } 635 } 636 637 static uint64_t fdctrl_read_mem (void *opaque, hwaddr reg, 638 unsigned ize) 639 { 640 return fdctrl_read(opaque, (uint32_t)reg); 641 } 642 643 static void fdctrl_write_mem (void *opaque, hwaddr reg, 644 uint64_t value, unsigned size) 645 { 646 fdctrl_write(opaque, (uint32_t)reg, value); 647 } 648 649 static const MemoryRegionOps fdctrl_mem_ops = { 650 .read = fdctrl_read_mem, 651 .write = fdctrl_write_mem, 652 .endianness = DEVICE_NATIVE_ENDIAN, 653 }; 654 655 static const MemoryRegionOps fdctrl_mem_strict_ops = { 656 .read = fdctrl_read_mem, 657 .write = fdctrl_write_mem, 658 .endianness = DEVICE_NATIVE_ENDIAN, 659 .valid = { 660 .min_access_size = 1, 661 .max_access_size = 1, 662 }, 663 }; 664 665 static bool fdrive_media_changed_needed(void *opaque) 666 { 667 FDrive *drive = opaque; 668 669 return (drive->blk != NULL && drive->media_changed != 1); 670 } 671 672 static const VMStateDescription vmstate_fdrive_media_changed = { 673 .name = "fdrive/media_changed", 674 .version_id = 1, 675 .minimum_version_id = 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 .fields = (VMStateField[]) { 694 VMSTATE_UINT8(media_rate, FDrive), 695 VMSTATE_END_OF_LIST() 696 } 697 }; 698 699 static bool fdrive_perpendicular_needed(void *opaque) 700 { 701 FDrive *drive = opaque; 702 703 return drive->perpendicular != 0; 704 } 705 706 static const VMStateDescription vmstate_fdrive_perpendicular = { 707 .name = "fdrive/perpendicular", 708 .version_id = 1, 709 .minimum_version_id = 1, 710 .fields = (VMStateField[]) { 711 VMSTATE_UINT8(perpendicular, FDrive), 712 VMSTATE_END_OF_LIST() 713 } 714 }; 715 716 static int fdrive_post_load(void *opaque, int version_id) 717 { 718 fd_revalidate(opaque); 719 return 0; 720 } 721 722 static const VMStateDescription vmstate_fdrive = { 723 .name = "fdrive", 724 .version_id = 1, 725 .minimum_version_id = 1, 726 .post_load = fdrive_post_load, 727 .fields = (VMStateField[]) { 728 VMSTATE_UINT8(head, FDrive), 729 VMSTATE_UINT8(track, FDrive), 730 VMSTATE_UINT8(sect, FDrive), 731 VMSTATE_END_OF_LIST() 732 }, 733 .subsections = (VMStateSubsection[]) { 734 { 735 .vmsd = &vmstate_fdrive_media_changed, 736 .needed = &fdrive_media_changed_needed, 737 } , { 738 .vmsd = &vmstate_fdrive_media_rate, 739 .needed = &fdrive_media_rate_needed, 740 } , { 741 .vmsd = &vmstate_fdrive_perpendicular, 742 .needed = &fdrive_perpendicular_needed, 743 } , { 744 /* empty */ 745 } 746 } 747 }; 748 749 static void fdc_pre_save(void *opaque) 750 { 751 FDCtrl *s = opaque; 752 753 s->dor_vmstate = s->dor | GET_CUR_DRV(s); 754 } 755 756 static int fdc_post_load(void *opaque, int version_id) 757 { 758 FDCtrl *s = opaque; 759 760 SET_CUR_DRV(s, s->dor_vmstate & FD_DOR_SELMASK); 761 s->dor = s->dor_vmstate & ~FD_DOR_SELMASK; 762 return 0; 763 } 764 765 static bool fdc_reset_sensei_needed(void *opaque) 766 { 767 FDCtrl *s = opaque; 768 769 return s->reset_sensei != 0; 770 } 771 772 static const VMStateDescription vmstate_fdc_reset_sensei = { 773 .name = "fdc/reset_sensei", 774 .version_id = 1, 775 .minimum_version_id = 1, 776 .fields = (VMStateField[]) { 777 VMSTATE_INT32(reset_sensei, FDCtrl), 778 VMSTATE_END_OF_LIST() 779 } 780 }; 781 782 static bool fdc_result_timer_needed(void *opaque) 783 { 784 FDCtrl *s = opaque; 785 786 return timer_pending(s->result_timer); 787 } 788 789 static const VMStateDescription vmstate_fdc_result_timer = { 790 .name = "fdc/result_timer", 791 .version_id = 1, 792 .minimum_version_id = 1, 793 .fields = (VMStateField[]) { 794 VMSTATE_TIMER(result_timer, FDCtrl), 795 VMSTATE_END_OF_LIST() 796 } 797 }; 798 799 static const VMStateDescription vmstate_fdc = { 800 .name = "fdc", 801 .version_id = 2, 802 .minimum_version_id = 2, 803 .pre_save = fdc_pre_save, 804 .post_load = fdc_post_load, 805 .fields = (VMStateField[]) { 806 /* Controller State */ 807 VMSTATE_UINT8(sra, FDCtrl), 808 VMSTATE_UINT8(srb, FDCtrl), 809 VMSTATE_UINT8(dor_vmstate, FDCtrl), 810 VMSTATE_UINT8(tdr, FDCtrl), 811 VMSTATE_UINT8(dsr, FDCtrl), 812 VMSTATE_UINT8(msr, FDCtrl), 813 VMSTATE_UINT8(status0, FDCtrl), 814 VMSTATE_UINT8(status1, FDCtrl), 815 VMSTATE_UINT8(status2, FDCtrl), 816 /* Command FIFO */ 817 VMSTATE_VARRAY_INT32(fifo, FDCtrl, fifo_size, 0, vmstate_info_uint8, 818 uint8_t), 819 VMSTATE_UINT32(data_pos, FDCtrl), 820 VMSTATE_UINT32(data_len, FDCtrl), 821 VMSTATE_UINT8(data_state, FDCtrl), 822 VMSTATE_UINT8(data_dir, FDCtrl), 823 VMSTATE_UINT8(eot, FDCtrl), 824 /* States kept only to be returned back */ 825 VMSTATE_UINT8(timer0, FDCtrl), 826 VMSTATE_UINT8(timer1, FDCtrl), 827 VMSTATE_UINT8(precomp_trk, FDCtrl), 828 VMSTATE_UINT8(config, FDCtrl), 829 VMSTATE_UINT8(lock, FDCtrl), 830 VMSTATE_UINT8(pwrd, FDCtrl), 831 VMSTATE_UINT8_EQUAL(num_floppies, FDCtrl), 832 VMSTATE_STRUCT_ARRAY(drives, FDCtrl, MAX_FD, 1, 833 vmstate_fdrive, FDrive), 834 VMSTATE_END_OF_LIST() 835 }, 836 .subsections = (VMStateSubsection[]) { 837 { 838 .vmsd = &vmstate_fdc_reset_sensei, 839 .needed = fdc_reset_sensei_needed, 840 } , { 841 .vmsd = &vmstate_fdc_result_timer, 842 .needed = fdc_result_timer_needed, 843 } , { 844 /* empty */ 845 } 846 } 847 }; 848 849 static void fdctrl_external_reset_sysbus(DeviceState *d) 850 { 851 FDCtrlSysBus *sys = SYSBUS_FDC(d); 852 FDCtrl *s = &sys->state; 853 854 fdctrl_reset(s, 0); 855 } 856 857 static void fdctrl_external_reset_isa(DeviceState *d) 858 { 859 FDCtrlISABus *isa = ISA_FDC(d); 860 FDCtrl *s = &isa->state; 861 862 fdctrl_reset(s, 0); 863 } 864 865 static void fdctrl_handle_tc(void *opaque, int irq, int level) 866 { 867 //FDCtrl *s = opaque; 868 869 if (level) { 870 // XXX 871 FLOPPY_DPRINTF("TC pulsed\n"); 872 } 873 } 874 875 /* Change IRQ state */ 876 static void fdctrl_reset_irq(FDCtrl *fdctrl) 877 { 878 fdctrl->status0 = 0; 879 if (!(fdctrl->sra & FD_SRA_INTPEND)) 880 return; 881 FLOPPY_DPRINTF("Reset interrupt\n"); 882 qemu_set_irq(fdctrl->irq, 0); 883 fdctrl->sra &= ~FD_SRA_INTPEND; 884 } 885 886 static void fdctrl_raise_irq(FDCtrl *fdctrl) 887 { 888 /* Sparc mutation */ 889 if (fdctrl->sun4m && (fdctrl->msr & FD_MSR_CMDBUSY)) { 890 /* XXX: not sure */ 891 fdctrl->msr &= ~FD_MSR_CMDBUSY; 892 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO; 893 return; 894 } 895 if (!(fdctrl->sra & FD_SRA_INTPEND)) { 896 qemu_set_irq(fdctrl->irq, 1); 897 fdctrl->sra |= FD_SRA_INTPEND; 898 } 899 900 fdctrl->reset_sensei = 0; 901 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0); 902 } 903 904 /* Reset controller */ 905 static void fdctrl_reset(FDCtrl *fdctrl, int do_irq) 906 { 907 int i; 908 909 FLOPPY_DPRINTF("reset controller\n"); 910 fdctrl_reset_irq(fdctrl); 911 /* Initialise controller */ 912 fdctrl->sra = 0; 913 fdctrl->srb = 0xc0; 914 if (!fdctrl->drives[1].blk) { 915 fdctrl->sra |= FD_SRA_nDRV2; 916 } 917 fdctrl->cur_drv = 0; 918 fdctrl->dor = FD_DOR_nRESET; 919 fdctrl->dor |= (fdctrl->dma_chann != -1) ? FD_DOR_DMAEN : 0; 920 fdctrl->msr = FD_MSR_RQM; 921 fdctrl->reset_sensei = 0; 922 timer_del(fdctrl->result_timer); 923 /* FIFO state */ 924 fdctrl->data_pos = 0; 925 fdctrl->data_len = 0; 926 fdctrl->data_state = 0; 927 fdctrl->data_dir = FD_DIR_WRITE; 928 for (i = 0; i < MAX_FD; i++) 929 fd_recalibrate(&fdctrl->drives[i]); 930 fdctrl_reset_fifo(fdctrl); 931 if (do_irq) { 932 fdctrl->status0 |= FD_SR0_RDYCHG; 933 fdctrl_raise_irq(fdctrl); 934 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT; 935 } 936 } 937 938 static inline FDrive *drv0(FDCtrl *fdctrl) 939 { 940 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2]; 941 } 942 943 static inline FDrive *drv1(FDCtrl *fdctrl) 944 { 945 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2)) 946 return &fdctrl->drives[1]; 947 else 948 return &fdctrl->drives[0]; 949 } 950 951 #if MAX_FD == 4 952 static inline FDrive *drv2(FDCtrl *fdctrl) 953 { 954 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2)) 955 return &fdctrl->drives[2]; 956 else 957 return &fdctrl->drives[1]; 958 } 959 960 static inline FDrive *drv3(FDCtrl *fdctrl) 961 { 962 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2)) 963 return &fdctrl->drives[3]; 964 else 965 return &fdctrl->drives[2]; 966 } 967 #endif 968 969 static FDrive *get_cur_drv(FDCtrl *fdctrl) 970 { 971 switch (fdctrl->cur_drv) { 972 case 0: return drv0(fdctrl); 973 case 1: return drv1(fdctrl); 974 #if MAX_FD == 4 975 case 2: return drv2(fdctrl); 976 case 3: return drv3(fdctrl); 977 #endif 978 default: return NULL; 979 } 980 } 981 982 /* Status A register : 0x00 (read-only) */ 983 static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl) 984 { 985 uint32_t retval = fdctrl->sra; 986 987 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval); 988 989 return retval; 990 } 991 992 /* Status B register : 0x01 (read-only) */ 993 static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl) 994 { 995 uint32_t retval = fdctrl->srb; 996 997 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval); 998 999 return retval; 1000 } 1001 1002 /* Digital output register : 0x02 */ 1003 static uint32_t fdctrl_read_dor(FDCtrl *fdctrl) 1004 { 1005 uint32_t retval = fdctrl->dor; 1006 1007 /* Selected drive */ 1008 retval |= fdctrl->cur_drv; 1009 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval); 1010 1011 return retval; 1012 } 1013 1014 static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value) 1015 { 1016 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value); 1017 1018 /* Motors */ 1019 if (value & FD_DOR_MOTEN0) 1020 fdctrl->srb |= FD_SRB_MTR0; 1021 else 1022 fdctrl->srb &= ~FD_SRB_MTR0; 1023 if (value & FD_DOR_MOTEN1) 1024 fdctrl->srb |= FD_SRB_MTR1; 1025 else 1026 fdctrl->srb &= ~FD_SRB_MTR1; 1027 1028 /* Drive */ 1029 if (value & 1) 1030 fdctrl->srb |= FD_SRB_DR0; 1031 else 1032 fdctrl->srb &= ~FD_SRB_DR0; 1033 1034 /* Reset */ 1035 if (!(value & FD_DOR_nRESET)) { 1036 if (fdctrl->dor & FD_DOR_nRESET) { 1037 FLOPPY_DPRINTF("controller enter RESET state\n"); 1038 } 1039 } else { 1040 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1041 FLOPPY_DPRINTF("controller out of RESET state\n"); 1042 fdctrl_reset(fdctrl, 1); 1043 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1044 } 1045 } 1046 /* Selected drive */ 1047 fdctrl->cur_drv = value & FD_DOR_SELMASK; 1048 1049 fdctrl->dor = value; 1050 } 1051 1052 /* Tape drive register : 0x03 */ 1053 static uint32_t fdctrl_read_tape(FDCtrl *fdctrl) 1054 { 1055 uint32_t retval = fdctrl->tdr; 1056 1057 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval); 1058 1059 return retval; 1060 } 1061 1062 static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value) 1063 { 1064 /* Reset mode */ 1065 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1066 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1067 return; 1068 } 1069 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value); 1070 /* Disk boot selection indicator */ 1071 fdctrl->tdr = value & FD_TDR_BOOTSEL; 1072 /* Tape indicators: never allow */ 1073 } 1074 1075 /* Main status register : 0x04 (read) */ 1076 static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl) 1077 { 1078 uint32_t retval = fdctrl->msr; 1079 1080 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1081 fdctrl->dor |= FD_DOR_nRESET; 1082 1083 /* Sparc mutation */ 1084 if (fdctrl->sun4m) { 1085 retval |= FD_MSR_DIO; 1086 fdctrl_reset_irq(fdctrl); 1087 }; 1088 1089 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval); 1090 1091 return retval; 1092 } 1093 1094 /* Data select rate register : 0x04 (write) */ 1095 static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value) 1096 { 1097 /* Reset mode */ 1098 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1099 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1100 return; 1101 } 1102 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value); 1103 /* Reset: autoclear */ 1104 if (value & FD_DSR_SWRESET) { 1105 fdctrl->dor &= ~FD_DOR_nRESET; 1106 fdctrl_reset(fdctrl, 1); 1107 fdctrl->dor |= FD_DOR_nRESET; 1108 } 1109 if (value & FD_DSR_PWRDOWN) { 1110 fdctrl_reset(fdctrl, 1); 1111 } 1112 fdctrl->dsr = value; 1113 } 1114 1115 /* Configuration control register: 0x07 (write) */ 1116 static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value) 1117 { 1118 /* Reset mode */ 1119 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1120 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1121 return; 1122 } 1123 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value); 1124 1125 /* Only the rate selection bits used in AT mode, and we 1126 * store those in the DSR. 1127 */ 1128 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) | 1129 (value & FD_DSR_DRATEMASK); 1130 } 1131 1132 static int fdctrl_media_changed(FDrive *drv) 1133 { 1134 return drv->media_changed; 1135 } 1136 1137 /* Digital input register : 0x07 (read-only) */ 1138 static uint32_t fdctrl_read_dir(FDCtrl *fdctrl) 1139 { 1140 uint32_t retval = 0; 1141 1142 if (fdctrl_media_changed(get_cur_drv(fdctrl))) { 1143 retval |= FD_DIR_DSKCHG; 1144 } 1145 if (retval != 0) { 1146 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval); 1147 } 1148 1149 return retval; 1150 } 1151 1152 /* FIFO state control */ 1153 static void fdctrl_reset_fifo(FDCtrl *fdctrl) 1154 { 1155 fdctrl->data_dir = FD_DIR_WRITE; 1156 fdctrl->data_pos = 0; 1157 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO); 1158 } 1159 1160 /* Set FIFO status for the host to read */ 1161 static void fdctrl_set_fifo(FDCtrl *fdctrl, int fifo_len) 1162 { 1163 fdctrl->data_dir = FD_DIR_READ; 1164 fdctrl->data_len = fifo_len; 1165 fdctrl->data_pos = 0; 1166 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO; 1167 } 1168 1169 /* Set an error: unimplemented/unknown command */ 1170 static void fdctrl_unimplemented(FDCtrl *fdctrl, int direction) 1171 { 1172 qemu_log_mask(LOG_UNIMP, "fdc: unimplemented command 0x%02x\n", 1173 fdctrl->fifo[0]); 1174 fdctrl->fifo[0] = FD_SR0_INVCMD; 1175 fdctrl_set_fifo(fdctrl, 1); 1176 } 1177 1178 /* Seek to next sector 1179 * returns 0 when end of track reached (for DBL_SIDES on head 1) 1180 * otherwise returns 1 1181 */ 1182 static int fdctrl_seek_to_next_sect(FDCtrl *fdctrl, FDrive *cur_drv) 1183 { 1184 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n", 1185 cur_drv->head, cur_drv->track, cur_drv->sect, 1186 fd_sector(cur_drv)); 1187 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an 1188 error in fact */ 1189 uint8_t new_head = cur_drv->head; 1190 uint8_t new_track = cur_drv->track; 1191 uint8_t new_sect = cur_drv->sect; 1192 1193 int ret = 1; 1194 1195 if (new_sect >= cur_drv->last_sect || 1196 new_sect == fdctrl->eot) { 1197 new_sect = 1; 1198 if (FD_MULTI_TRACK(fdctrl->data_state)) { 1199 if (new_head == 0 && 1200 (cur_drv->flags & FDISK_DBL_SIDES) != 0) { 1201 new_head = 1; 1202 } else { 1203 new_head = 0; 1204 new_track++; 1205 fdctrl->status0 |= FD_SR0_SEEK; 1206 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0) { 1207 ret = 0; 1208 } 1209 } 1210 } else { 1211 fdctrl->status0 |= FD_SR0_SEEK; 1212 new_track++; 1213 ret = 0; 1214 } 1215 if (ret == 1) { 1216 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n", 1217 new_head, new_track, new_sect, fd_sector(cur_drv)); 1218 } 1219 } else { 1220 new_sect++; 1221 } 1222 fd_seek(cur_drv, new_head, new_track, new_sect, 1); 1223 return ret; 1224 } 1225 1226 /* Callback for transfer end (stop or abort) */ 1227 static void fdctrl_stop_transfer(FDCtrl *fdctrl, uint8_t status0, 1228 uint8_t status1, uint8_t status2) 1229 { 1230 FDrive *cur_drv; 1231 cur_drv = get_cur_drv(fdctrl); 1232 1233 fdctrl->status0 &= ~(FD_SR0_DS0 | FD_SR0_DS1 | FD_SR0_HEAD); 1234 fdctrl->status0 |= GET_CUR_DRV(fdctrl); 1235 if (cur_drv->head) { 1236 fdctrl->status0 |= FD_SR0_HEAD; 1237 } 1238 fdctrl->status0 |= status0; 1239 1240 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n", 1241 status0, status1, status2, fdctrl->status0); 1242 fdctrl->fifo[0] = fdctrl->status0; 1243 fdctrl->fifo[1] = status1; 1244 fdctrl->fifo[2] = status2; 1245 fdctrl->fifo[3] = cur_drv->track; 1246 fdctrl->fifo[4] = cur_drv->head; 1247 fdctrl->fifo[5] = cur_drv->sect; 1248 fdctrl->fifo[6] = FD_SECTOR_SC; 1249 fdctrl->data_dir = FD_DIR_READ; 1250 if (!(fdctrl->msr & FD_MSR_NONDMA)) { 1251 DMA_release_DREQ(fdctrl->dma_chann); 1252 } 1253 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO; 1254 fdctrl->msr &= ~FD_MSR_NONDMA; 1255 1256 fdctrl_set_fifo(fdctrl, 7); 1257 fdctrl_raise_irq(fdctrl); 1258 } 1259 1260 /* Prepare a data transfer (either DMA or FIFO) */ 1261 static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction) 1262 { 1263 FDrive *cur_drv; 1264 uint8_t kh, kt, ks; 1265 1266 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1267 cur_drv = get_cur_drv(fdctrl); 1268 kt = fdctrl->fifo[2]; 1269 kh = fdctrl->fifo[3]; 1270 ks = fdctrl->fifo[4]; 1271 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n", 1272 GET_CUR_DRV(fdctrl), kh, kt, ks, 1273 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, 1274 NUM_SIDES(cur_drv))); 1275 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) { 1276 case 2: 1277 /* sect too big */ 1278 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1279 fdctrl->fifo[3] = kt; 1280 fdctrl->fifo[4] = kh; 1281 fdctrl->fifo[5] = ks; 1282 return; 1283 case 3: 1284 /* track too big */ 1285 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00); 1286 fdctrl->fifo[3] = kt; 1287 fdctrl->fifo[4] = kh; 1288 fdctrl->fifo[5] = ks; 1289 return; 1290 case 4: 1291 /* No seek enabled */ 1292 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1293 fdctrl->fifo[3] = kt; 1294 fdctrl->fifo[4] = kh; 1295 fdctrl->fifo[5] = ks; 1296 return; 1297 case 1: 1298 fdctrl->status0 |= FD_SR0_SEEK; 1299 break; 1300 default: 1301 break; 1302 } 1303 1304 /* Check the data rate. If the programmed data rate does not match 1305 * the currently inserted medium, the operation has to fail. */ 1306 if (fdctrl->check_media_rate && 1307 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) { 1308 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n", 1309 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate); 1310 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00); 1311 fdctrl->fifo[3] = kt; 1312 fdctrl->fifo[4] = kh; 1313 fdctrl->fifo[5] = ks; 1314 return; 1315 } 1316 1317 /* Set the FIFO state */ 1318 fdctrl->data_dir = direction; 1319 fdctrl->data_pos = 0; 1320 assert(fdctrl->msr & FD_MSR_CMDBUSY); 1321 if (fdctrl->fifo[0] & 0x80) 1322 fdctrl->data_state |= FD_STATE_MULTI; 1323 else 1324 fdctrl->data_state &= ~FD_STATE_MULTI; 1325 if (fdctrl->fifo[5] == 0) { 1326 fdctrl->data_len = fdctrl->fifo[8]; 1327 } else { 1328 int tmp; 1329 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]); 1330 tmp = (fdctrl->fifo[6] - ks + 1); 1331 if (fdctrl->fifo[0] & 0x80) 1332 tmp += fdctrl->fifo[6]; 1333 fdctrl->data_len *= tmp; 1334 } 1335 fdctrl->eot = fdctrl->fifo[6]; 1336 if (fdctrl->dor & FD_DOR_DMAEN) { 1337 int dma_mode; 1338 /* DMA transfer are enabled. Check if DMA channel is well programmed */ 1339 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann); 1340 dma_mode = (dma_mode >> 2) & 3; 1341 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n", 1342 dma_mode, direction, 1343 (128 << fdctrl->fifo[5]) * 1344 (cur_drv->last_sect - ks + 1), fdctrl->data_len); 1345 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL || 1346 direction == FD_DIR_SCANH) && dma_mode == 0) || 1347 (direction == FD_DIR_WRITE && dma_mode == 2) || 1348 (direction == FD_DIR_READ && dma_mode == 1) || 1349 (direction == FD_DIR_VERIFY)) { 1350 /* No access is allowed until DMA transfer has completed */ 1351 fdctrl->msr &= ~FD_MSR_RQM; 1352 if (direction != FD_DIR_VERIFY) { 1353 /* Now, we just have to wait for the DMA controller to 1354 * recall us... 1355 */ 1356 DMA_hold_DREQ(fdctrl->dma_chann); 1357 DMA_schedule(fdctrl->dma_chann); 1358 } else { 1359 /* Start transfer */ 1360 fdctrl_transfer_handler(fdctrl, fdctrl->dma_chann, 0, 1361 fdctrl->data_len); 1362 } 1363 return; 1364 } else { 1365 FLOPPY_DPRINTF("bad dma_mode=%d direction=%d\n", dma_mode, 1366 direction); 1367 } 1368 } 1369 FLOPPY_DPRINTF("start non-DMA transfer\n"); 1370 fdctrl->msr |= FD_MSR_NONDMA; 1371 if (direction != FD_DIR_WRITE) 1372 fdctrl->msr |= FD_MSR_DIO; 1373 /* IO based transfer: calculate len */ 1374 fdctrl_raise_irq(fdctrl); 1375 } 1376 1377 /* Prepare a transfer of deleted data */ 1378 static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction) 1379 { 1380 qemu_log_mask(LOG_UNIMP, "fdctrl_start_transfer_del() unimplemented\n"); 1381 1382 /* We don't handle deleted data, 1383 * so we don't return *ANYTHING* 1384 */ 1385 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1386 } 1387 1388 /* handlers for DMA transfers */ 1389 static int fdctrl_transfer_handler (void *opaque, int nchan, 1390 int dma_pos, int dma_len) 1391 { 1392 FDCtrl *fdctrl; 1393 FDrive *cur_drv; 1394 int len, start_pos, rel_pos; 1395 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00; 1396 1397 fdctrl = opaque; 1398 if (fdctrl->msr & FD_MSR_RQM) { 1399 FLOPPY_DPRINTF("Not in DMA transfer mode !\n"); 1400 return 0; 1401 } 1402 cur_drv = get_cur_drv(fdctrl); 1403 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL || 1404 fdctrl->data_dir == FD_DIR_SCANH) 1405 status2 = FD_SR2_SNS; 1406 if (dma_len > fdctrl->data_len) 1407 dma_len = fdctrl->data_len; 1408 if (cur_drv->blk == NULL) { 1409 if (fdctrl->data_dir == FD_DIR_WRITE) 1410 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1411 else 1412 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1413 len = 0; 1414 goto transfer_error; 1415 } 1416 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; 1417 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) { 1418 len = dma_len - fdctrl->data_pos; 1419 if (len + rel_pos > FD_SECTOR_LEN) 1420 len = FD_SECTOR_LEN - rel_pos; 1421 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x " 1422 "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos, 1423 fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head, 1424 cur_drv->track, cur_drv->sect, fd_sector(cur_drv), 1425 fd_sector(cur_drv) * FD_SECTOR_LEN); 1426 if (fdctrl->data_dir != FD_DIR_WRITE || 1427 len < FD_SECTOR_LEN || rel_pos != 0) { 1428 /* READ & SCAN commands and realign to a sector for WRITE */ 1429 if (blk_read(cur_drv->blk, fd_sector(cur_drv), 1430 fdctrl->fifo, 1) < 0) { 1431 FLOPPY_DPRINTF("Floppy: error getting sector %d\n", 1432 fd_sector(cur_drv)); 1433 /* Sure, image size is too small... */ 1434 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1435 } 1436 } 1437 switch (fdctrl->data_dir) { 1438 case FD_DIR_READ: 1439 /* READ commands */ 1440 DMA_write_memory (nchan, fdctrl->fifo + rel_pos, 1441 fdctrl->data_pos, len); 1442 break; 1443 case FD_DIR_WRITE: 1444 /* WRITE commands */ 1445 if (cur_drv->ro) { 1446 /* Handle readonly medium early, no need to do DMA, touch the 1447 * LED or attempt any writes. A real floppy doesn't attempt 1448 * to write to readonly media either. */ 1449 fdctrl_stop_transfer(fdctrl, 1450 FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW, 1451 0x00); 1452 goto transfer_error; 1453 } 1454 1455 DMA_read_memory (nchan, fdctrl->fifo + rel_pos, 1456 fdctrl->data_pos, len); 1457 if (blk_write(cur_drv->blk, fd_sector(cur_drv), 1458 fdctrl->fifo, 1) < 0) { 1459 FLOPPY_DPRINTF("error writing sector %d\n", 1460 fd_sector(cur_drv)); 1461 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1462 goto transfer_error; 1463 } 1464 break; 1465 case FD_DIR_VERIFY: 1466 /* VERIFY commands */ 1467 break; 1468 default: 1469 /* SCAN commands */ 1470 { 1471 uint8_t tmpbuf[FD_SECTOR_LEN]; 1472 int ret; 1473 DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len); 1474 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len); 1475 if (ret == 0) { 1476 status2 = FD_SR2_SEH; 1477 goto end_transfer; 1478 } 1479 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) || 1480 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) { 1481 status2 = 0x00; 1482 goto end_transfer; 1483 } 1484 } 1485 break; 1486 } 1487 fdctrl->data_pos += len; 1488 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; 1489 if (rel_pos == 0) { 1490 /* Seek to next sector */ 1491 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) 1492 break; 1493 } 1494 } 1495 end_transfer: 1496 len = fdctrl->data_pos - start_pos; 1497 FLOPPY_DPRINTF("end transfer %d %d %d\n", 1498 fdctrl->data_pos, len, fdctrl->data_len); 1499 if (fdctrl->data_dir == FD_DIR_SCANE || 1500 fdctrl->data_dir == FD_DIR_SCANL || 1501 fdctrl->data_dir == FD_DIR_SCANH) 1502 status2 = FD_SR2_SEH; 1503 fdctrl->data_len -= len; 1504 fdctrl_stop_transfer(fdctrl, status0, status1, status2); 1505 transfer_error: 1506 1507 return len; 1508 } 1509 1510 /* Data register : 0x05 */ 1511 static uint32_t fdctrl_read_data(FDCtrl *fdctrl) 1512 { 1513 FDrive *cur_drv; 1514 uint32_t retval = 0; 1515 int pos; 1516 1517 cur_drv = get_cur_drv(fdctrl); 1518 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1519 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) { 1520 FLOPPY_DPRINTF("error: controller not ready for reading\n"); 1521 return 0; 1522 } 1523 pos = fdctrl->data_pos; 1524 if (fdctrl->msr & FD_MSR_NONDMA) { 1525 pos %= FD_SECTOR_LEN; 1526 if (pos == 0) { 1527 if (fdctrl->data_pos != 0) 1528 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) { 1529 FLOPPY_DPRINTF("error seeking to next sector %d\n", 1530 fd_sector(cur_drv)); 1531 return 0; 1532 } 1533 if (blk_read(cur_drv->blk, fd_sector(cur_drv), fdctrl->fifo, 1) 1534 < 0) { 1535 FLOPPY_DPRINTF("error getting sector %d\n", 1536 fd_sector(cur_drv)); 1537 /* Sure, image size is too small... */ 1538 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1539 } 1540 } 1541 } 1542 retval = fdctrl->fifo[pos]; 1543 if (++fdctrl->data_pos == fdctrl->data_len) { 1544 fdctrl->data_pos = 0; 1545 /* Switch from transfer mode to status mode 1546 * then from status mode to command mode 1547 */ 1548 if (fdctrl->msr & FD_MSR_NONDMA) { 1549 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1550 } else { 1551 fdctrl_reset_fifo(fdctrl); 1552 fdctrl_reset_irq(fdctrl); 1553 } 1554 } 1555 FLOPPY_DPRINTF("data register: 0x%02x\n", retval); 1556 1557 return retval; 1558 } 1559 1560 static void fdctrl_format_sector(FDCtrl *fdctrl) 1561 { 1562 FDrive *cur_drv; 1563 uint8_t kh, kt, ks; 1564 1565 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1566 cur_drv = get_cur_drv(fdctrl); 1567 kt = fdctrl->fifo[6]; 1568 kh = fdctrl->fifo[7]; 1569 ks = fdctrl->fifo[8]; 1570 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n", 1571 GET_CUR_DRV(fdctrl), kh, kt, ks, 1572 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, 1573 NUM_SIDES(cur_drv))); 1574 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) { 1575 case 2: 1576 /* sect too big */ 1577 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1578 fdctrl->fifo[3] = kt; 1579 fdctrl->fifo[4] = kh; 1580 fdctrl->fifo[5] = ks; 1581 return; 1582 case 3: 1583 /* track too big */ 1584 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00); 1585 fdctrl->fifo[3] = kt; 1586 fdctrl->fifo[4] = kh; 1587 fdctrl->fifo[5] = ks; 1588 return; 1589 case 4: 1590 /* No seek enabled */ 1591 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00); 1592 fdctrl->fifo[3] = kt; 1593 fdctrl->fifo[4] = kh; 1594 fdctrl->fifo[5] = ks; 1595 return; 1596 case 1: 1597 fdctrl->status0 |= FD_SR0_SEEK; 1598 break; 1599 default: 1600 break; 1601 } 1602 memset(fdctrl->fifo, 0, FD_SECTOR_LEN); 1603 if (cur_drv->blk == NULL || 1604 blk_write(cur_drv->blk, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) { 1605 FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv)); 1606 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00); 1607 } else { 1608 if (cur_drv->sect == cur_drv->last_sect) { 1609 fdctrl->data_state &= ~FD_STATE_FORMAT; 1610 /* Last sector done */ 1611 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1612 } else { 1613 /* More to do */ 1614 fdctrl->data_pos = 0; 1615 fdctrl->data_len = 4; 1616 } 1617 } 1618 } 1619 1620 static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction) 1621 { 1622 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0; 1623 fdctrl->fifo[0] = fdctrl->lock << 4; 1624 fdctrl_set_fifo(fdctrl, 1); 1625 } 1626 1627 static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction) 1628 { 1629 FDrive *cur_drv = get_cur_drv(fdctrl); 1630 1631 /* Drives position */ 1632 fdctrl->fifo[0] = drv0(fdctrl)->track; 1633 fdctrl->fifo[1] = drv1(fdctrl)->track; 1634 #if MAX_FD == 4 1635 fdctrl->fifo[2] = drv2(fdctrl)->track; 1636 fdctrl->fifo[3] = drv3(fdctrl)->track; 1637 #else 1638 fdctrl->fifo[2] = 0; 1639 fdctrl->fifo[3] = 0; 1640 #endif 1641 /* timers */ 1642 fdctrl->fifo[4] = fdctrl->timer0; 1643 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0); 1644 fdctrl->fifo[6] = cur_drv->last_sect; 1645 fdctrl->fifo[7] = (fdctrl->lock << 7) | 1646 (cur_drv->perpendicular << 2); 1647 fdctrl->fifo[8] = fdctrl->config; 1648 fdctrl->fifo[9] = fdctrl->precomp_trk; 1649 fdctrl_set_fifo(fdctrl, 10); 1650 } 1651 1652 static void fdctrl_handle_version(FDCtrl *fdctrl, int direction) 1653 { 1654 /* Controller's version */ 1655 fdctrl->fifo[0] = fdctrl->version; 1656 fdctrl_set_fifo(fdctrl, 1); 1657 } 1658 1659 static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction) 1660 { 1661 fdctrl->fifo[0] = 0x41; /* Stepping 1 */ 1662 fdctrl_set_fifo(fdctrl, 1); 1663 } 1664 1665 static void fdctrl_handle_restore(FDCtrl *fdctrl, int direction) 1666 { 1667 FDrive *cur_drv = get_cur_drv(fdctrl); 1668 1669 /* Drives position */ 1670 drv0(fdctrl)->track = fdctrl->fifo[3]; 1671 drv1(fdctrl)->track = fdctrl->fifo[4]; 1672 #if MAX_FD == 4 1673 drv2(fdctrl)->track = fdctrl->fifo[5]; 1674 drv3(fdctrl)->track = fdctrl->fifo[6]; 1675 #endif 1676 /* timers */ 1677 fdctrl->timer0 = fdctrl->fifo[7]; 1678 fdctrl->timer1 = fdctrl->fifo[8]; 1679 cur_drv->last_sect = fdctrl->fifo[9]; 1680 fdctrl->lock = fdctrl->fifo[10] >> 7; 1681 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF; 1682 fdctrl->config = fdctrl->fifo[11]; 1683 fdctrl->precomp_trk = fdctrl->fifo[12]; 1684 fdctrl->pwrd = fdctrl->fifo[13]; 1685 fdctrl_reset_fifo(fdctrl); 1686 } 1687 1688 static void fdctrl_handle_save(FDCtrl *fdctrl, int direction) 1689 { 1690 FDrive *cur_drv = get_cur_drv(fdctrl); 1691 1692 fdctrl->fifo[0] = 0; 1693 fdctrl->fifo[1] = 0; 1694 /* Drives position */ 1695 fdctrl->fifo[2] = drv0(fdctrl)->track; 1696 fdctrl->fifo[3] = drv1(fdctrl)->track; 1697 #if MAX_FD == 4 1698 fdctrl->fifo[4] = drv2(fdctrl)->track; 1699 fdctrl->fifo[5] = drv3(fdctrl)->track; 1700 #else 1701 fdctrl->fifo[4] = 0; 1702 fdctrl->fifo[5] = 0; 1703 #endif 1704 /* timers */ 1705 fdctrl->fifo[6] = fdctrl->timer0; 1706 fdctrl->fifo[7] = fdctrl->timer1; 1707 fdctrl->fifo[8] = cur_drv->last_sect; 1708 fdctrl->fifo[9] = (fdctrl->lock << 7) | 1709 (cur_drv->perpendicular << 2); 1710 fdctrl->fifo[10] = fdctrl->config; 1711 fdctrl->fifo[11] = fdctrl->precomp_trk; 1712 fdctrl->fifo[12] = fdctrl->pwrd; 1713 fdctrl->fifo[13] = 0; 1714 fdctrl->fifo[14] = 0; 1715 fdctrl_set_fifo(fdctrl, 15); 1716 } 1717 1718 static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction) 1719 { 1720 FDrive *cur_drv = get_cur_drv(fdctrl); 1721 1722 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; 1723 timer_mod(fdctrl->result_timer, 1724 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + (get_ticks_per_sec() / 50)); 1725 } 1726 1727 static void fdctrl_handle_format_track(FDCtrl *fdctrl, int direction) 1728 { 1729 FDrive *cur_drv; 1730 1731 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1732 cur_drv = get_cur_drv(fdctrl); 1733 fdctrl->data_state |= FD_STATE_FORMAT; 1734 if (fdctrl->fifo[0] & 0x80) 1735 fdctrl->data_state |= FD_STATE_MULTI; 1736 else 1737 fdctrl->data_state &= ~FD_STATE_MULTI; 1738 cur_drv->bps = 1739 fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2]; 1740 #if 0 1741 cur_drv->last_sect = 1742 cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] : 1743 fdctrl->fifo[3] / 2; 1744 #else 1745 cur_drv->last_sect = fdctrl->fifo[3]; 1746 #endif 1747 /* TODO: implement format using DMA expected by the Bochs BIOS 1748 * and Linux fdformat (read 3 bytes per sector via DMA and fill 1749 * the sector with the specified fill byte 1750 */ 1751 fdctrl->data_state &= ~FD_STATE_FORMAT; 1752 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 1753 } 1754 1755 static void fdctrl_handle_specify(FDCtrl *fdctrl, int direction) 1756 { 1757 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF; 1758 fdctrl->timer1 = fdctrl->fifo[2] >> 1; 1759 if (fdctrl->fifo[2] & 1) 1760 fdctrl->dor &= ~FD_DOR_DMAEN; 1761 else 1762 fdctrl->dor |= FD_DOR_DMAEN; 1763 /* No result back */ 1764 fdctrl_reset_fifo(fdctrl); 1765 } 1766 1767 static void fdctrl_handle_sense_drive_status(FDCtrl *fdctrl, int direction) 1768 { 1769 FDrive *cur_drv; 1770 1771 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1772 cur_drv = get_cur_drv(fdctrl); 1773 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; 1774 /* 1 Byte status back */ 1775 fdctrl->fifo[0] = (cur_drv->ro << 6) | 1776 (cur_drv->track == 0 ? 0x10 : 0x00) | 1777 (cur_drv->head << 2) | 1778 GET_CUR_DRV(fdctrl) | 1779 0x28; 1780 fdctrl_set_fifo(fdctrl, 1); 1781 } 1782 1783 static void fdctrl_handle_recalibrate(FDCtrl *fdctrl, int direction) 1784 { 1785 FDrive *cur_drv; 1786 1787 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1788 cur_drv = get_cur_drv(fdctrl); 1789 fd_recalibrate(cur_drv); 1790 fdctrl_reset_fifo(fdctrl); 1791 /* Raise Interrupt */ 1792 fdctrl->status0 |= FD_SR0_SEEK; 1793 fdctrl_raise_irq(fdctrl); 1794 } 1795 1796 static void fdctrl_handle_sense_interrupt_status(FDCtrl *fdctrl, int direction) 1797 { 1798 FDrive *cur_drv = get_cur_drv(fdctrl); 1799 1800 if (fdctrl->reset_sensei > 0) { 1801 fdctrl->fifo[0] = 1802 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei; 1803 fdctrl->reset_sensei--; 1804 } else if (!(fdctrl->sra & FD_SRA_INTPEND)) { 1805 fdctrl->fifo[0] = FD_SR0_INVCMD; 1806 fdctrl_set_fifo(fdctrl, 1); 1807 return; 1808 } else { 1809 fdctrl->fifo[0] = 1810 (fdctrl->status0 & ~(FD_SR0_HEAD | FD_SR0_DS1 | FD_SR0_DS0)) 1811 | GET_CUR_DRV(fdctrl); 1812 } 1813 1814 fdctrl->fifo[1] = cur_drv->track; 1815 fdctrl_set_fifo(fdctrl, 2); 1816 fdctrl_reset_irq(fdctrl); 1817 fdctrl->status0 = FD_SR0_RDYCHG; 1818 } 1819 1820 static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction) 1821 { 1822 FDrive *cur_drv; 1823 1824 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1825 cur_drv = get_cur_drv(fdctrl); 1826 fdctrl_reset_fifo(fdctrl); 1827 /* The seek command just sends step pulses to the drive and doesn't care if 1828 * there is a medium inserted of if it's banging the head against the drive. 1829 */ 1830 fd_seek(cur_drv, cur_drv->head, fdctrl->fifo[2], cur_drv->sect, 1); 1831 /* Raise Interrupt */ 1832 fdctrl->status0 |= FD_SR0_SEEK; 1833 fdctrl_raise_irq(fdctrl); 1834 } 1835 1836 static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction) 1837 { 1838 FDrive *cur_drv = get_cur_drv(fdctrl); 1839 1840 if (fdctrl->fifo[1] & 0x80) 1841 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7; 1842 /* No result back */ 1843 fdctrl_reset_fifo(fdctrl); 1844 } 1845 1846 static void fdctrl_handle_configure(FDCtrl *fdctrl, int direction) 1847 { 1848 fdctrl->config = fdctrl->fifo[2]; 1849 fdctrl->precomp_trk = fdctrl->fifo[3]; 1850 /* No result back */ 1851 fdctrl_reset_fifo(fdctrl); 1852 } 1853 1854 static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction) 1855 { 1856 fdctrl->pwrd = fdctrl->fifo[1]; 1857 fdctrl->fifo[0] = fdctrl->fifo[1]; 1858 fdctrl_set_fifo(fdctrl, 1); 1859 } 1860 1861 static void fdctrl_handle_option(FDCtrl *fdctrl, int direction) 1862 { 1863 /* No result back */ 1864 fdctrl_reset_fifo(fdctrl); 1865 } 1866 1867 static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction) 1868 { 1869 FDrive *cur_drv = get_cur_drv(fdctrl); 1870 1871 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) { 1872 /* Command parameters done */ 1873 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) { 1874 fdctrl->fifo[0] = fdctrl->fifo[1]; 1875 fdctrl->fifo[2] = 0; 1876 fdctrl->fifo[3] = 0; 1877 fdctrl_set_fifo(fdctrl, 4); 1878 } else { 1879 fdctrl_reset_fifo(fdctrl); 1880 } 1881 } else if (fdctrl->data_len > 7) { 1882 /* ERROR */ 1883 fdctrl->fifo[0] = 0x80 | 1884 (cur_drv->head << 2) | GET_CUR_DRV(fdctrl); 1885 fdctrl_set_fifo(fdctrl, 1); 1886 } 1887 } 1888 1889 static void fdctrl_handle_relative_seek_in(FDCtrl *fdctrl, int direction) 1890 { 1891 FDrive *cur_drv; 1892 1893 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1894 cur_drv = get_cur_drv(fdctrl); 1895 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) { 1896 fd_seek(cur_drv, cur_drv->head, cur_drv->max_track - 1, 1897 cur_drv->sect, 1); 1898 } else { 1899 fd_seek(cur_drv, cur_drv->head, 1900 cur_drv->track + fdctrl->fifo[2], cur_drv->sect, 1); 1901 } 1902 fdctrl_reset_fifo(fdctrl); 1903 /* Raise Interrupt */ 1904 fdctrl->status0 |= FD_SR0_SEEK; 1905 fdctrl_raise_irq(fdctrl); 1906 } 1907 1908 static void fdctrl_handle_relative_seek_out(FDCtrl *fdctrl, int direction) 1909 { 1910 FDrive *cur_drv; 1911 1912 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK); 1913 cur_drv = get_cur_drv(fdctrl); 1914 if (fdctrl->fifo[2] > cur_drv->track) { 1915 fd_seek(cur_drv, cur_drv->head, 0, cur_drv->sect, 1); 1916 } else { 1917 fd_seek(cur_drv, cur_drv->head, 1918 cur_drv->track - fdctrl->fifo[2], cur_drv->sect, 1); 1919 } 1920 fdctrl_reset_fifo(fdctrl); 1921 /* Raise Interrupt */ 1922 fdctrl->status0 |= FD_SR0_SEEK; 1923 fdctrl_raise_irq(fdctrl); 1924 } 1925 1926 static const struct { 1927 uint8_t value; 1928 uint8_t mask; 1929 const char* name; 1930 int parameters; 1931 void (*handler)(FDCtrl *fdctrl, int direction); 1932 int direction; 1933 } handlers[] = { 1934 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ }, 1935 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE }, 1936 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek }, 1937 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status }, 1938 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate }, 1939 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track }, 1940 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ }, 1941 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */ 1942 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */ 1943 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ }, 1944 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE }, 1945 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_start_transfer, FD_DIR_VERIFY }, 1946 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL }, 1947 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH }, 1948 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE }, 1949 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid }, 1950 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify }, 1951 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status }, 1952 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode }, 1953 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure }, 1954 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode }, 1955 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option }, 1956 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command }, 1957 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out }, 1958 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented }, 1959 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in }, 1960 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock }, 1961 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg }, 1962 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version }, 1963 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid }, 1964 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */ 1965 { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */ 1966 }; 1967 /* Associate command to an index in the 'handlers' array */ 1968 static uint8_t command_to_handler[256]; 1969 1970 static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value) 1971 { 1972 FDrive *cur_drv; 1973 int pos; 1974 1975 /* Reset mode */ 1976 if (!(fdctrl->dor & FD_DOR_nRESET)) { 1977 FLOPPY_DPRINTF("Floppy controller in RESET state !\n"); 1978 return; 1979 } 1980 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) { 1981 FLOPPY_DPRINTF("error: controller not ready for writing\n"); 1982 return; 1983 } 1984 fdctrl->dsr &= ~FD_DSR_PWRDOWN; 1985 /* Is it write command time ? */ 1986 if (fdctrl->msr & FD_MSR_NONDMA) { 1987 /* FIFO data write */ 1988 pos = fdctrl->data_pos++; 1989 pos %= FD_SECTOR_LEN; 1990 fdctrl->fifo[pos] = value; 1991 if (pos == FD_SECTOR_LEN - 1 || 1992 fdctrl->data_pos == fdctrl->data_len) { 1993 cur_drv = get_cur_drv(fdctrl); 1994 if (blk_write(cur_drv->blk, fd_sector(cur_drv), fdctrl->fifo, 1) 1995 < 0) { 1996 FLOPPY_DPRINTF("error writing sector %d\n", 1997 fd_sector(cur_drv)); 1998 return; 1999 } 2000 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) { 2001 FLOPPY_DPRINTF("error seeking to next sector %d\n", 2002 fd_sector(cur_drv)); 2003 return; 2004 } 2005 } 2006 /* Switch from transfer mode to status mode 2007 * then from status mode to command mode 2008 */ 2009 if (fdctrl->data_pos == fdctrl->data_len) 2010 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2011 return; 2012 } 2013 if (fdctrl->data_pos == 0) { 2014 /* Command */ 2015 pos = command_to_handler[value & 0xff]; 2016 FLOPPY_DPRINTF("%s command\n", handlers[pos].name); 2017 fdctrl->data_len = handlers[pos].parameters + 1; 2018 fdctrl->msr |= FD_MSR_CMDBUSY; 2019 } 2020 2021 FLOPPY_DPRINTF("%s: %02x\n", __func__, value); 2022 fdctrl->fifo[fdctrl->data_pos++] = value; 2023 if (fdctrl->data_pos == fdctrl->data_len) { 2024 /* We now have all parameters 2025 * and will be able to treat the command 2026 */ 2027 if (fdctrl->data_state & FD_STATE_FORMAT) { 2028 fdctrl_format_sector(fdctrl); 2029 return; 2030 } 2031 2032 pos = command_to_handler[fdctrl->fifo[0] & 0xff]; 2033 FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name); 2034 (*handlers[pos].handler)(fdctrl, handlers[pos].direction); 2035 } 2036 } 2037 2038 static void fdctrl_result_timer(void *opaque) 2039 { 2040 FDCtrl *fdctrl = opaque; 2041 FDrive *cur_drv = get_cur_drv(fdctrl); 2042 2043 /* Pretend we are spinning. 2044 * This is needed for Coherent, which uses READ ID to check for 2045 * sector interleaving. 2046 */ 2047 if (cur_drv->last_sect != 0) { 2048 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1; 2049 } 2050 /* READ_ID can't automatically succeed! */ 2051 if (fdctrl->check_media_rate && 2052 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) { 2053 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n", 2054 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate); 2055 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00); 2056 } else { 2057 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); 2058 } 2059 } 2060 2061 static void fdctrl_change_cb(void *opaque, bool load) 2062 { 2063 FDrive *drive = opaque; 2064 2065 drive->media_changed = 1; 2066 fd_revalidate(drive); 2067 } 2068 2069 static const BlockDevOps fdctrl_block_ops = { 2070 .change_media_cb = fdctrl_change_cb, 2071 }; 2072 2073 /* Init functions */ 2074 static void fdctrl_connect_drives(FDCtrl *fdctrl, Error **errp) 2075 { 2076 unsigned int i; 2077 FDrive *drive; 2078 2079 for (i = 0; i < MAX_FD; i++) { 2080 drive = &fdctrl->drives[i]; 2081 drive->fdctrl = fdctrl; 2082 2083 if (drive->blk) { 2084 if (blk_get_on_error(drive->blk, 0) != BLOCKDEV_ON_ERROR_ENOSPC) { 2085 error_setg(errp, "fdc doesn't support drive option werror"); 2086 return; 2087 } 2088 if (blk_get_on_error(drive->blk, 1) != BLOCKDEV_ON_ERROR_REPORT) { 2089 error_setg(errp, "fdc doesn't support drive option rerror"); 2090 return; 2091 } 2092 } 2093 2094 fd_init(drive); 2095 fdctrl_change_cb(drive, 0); 2096 if (drive->blk) { 2097 blk_set_dev_ops(drive->blk, &fdctrl_block_ops, drive); 2098 } 2099 } 2100 } 2101 2102 ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds) 2103 { 2104 DeviceState *dev; 2105 ISADevice *isadev; 2106 2107 isadev = isa_try_create(bus, TYPE_ISA_FDC); 2108 if (!isadev) { 2109 return NULL; 2110 } 2111 dev = DEVICE(isadev); 2112 2113 if (fds[0]) { 2114 qdev_prop_set_drive_nofail(dev, "driveA", blk_by_legacy_dinfo(fds[0])); 2115 } 2116 if (fds[1]) { 2117 qdev_prop_set_drive_nofail(dev, "driveB", blk_by_legacy_dinfo(fds[1])); 2118 } 2119 qdev_init_nofail(dev); 2120 2121 return isadev; 2122 } 2123 2124 void fdctrl_init_sysbus(qemu_irq irq, int dma_chann, 2125 hwaddr mmio_base, DriveInfo **fds) 2126 { 2127 FDCtrl *fdctrl; 2128 DeviceState *dev; 2129 SysBusDevice *sbd; 2130 FDCtrlSysBus *sys; 2131 2132 dev = qdev_create(NULL, "sysbus-fdc"); 2133 sys = SYSBUS_FDC(dev); 2134 fdctrl = &sys->state; 2135 fdctrl->dma_chann = dma_chann; /* FIXME */ 2136 if (fds[0]) { 2137 qdev_prop_set_drive_nofail(dev, "driveA", blk_by_legacy_dinfo(fds[0])); 2138 } 2139 if (fds[1]) { 2140 qdev_prop_set_drive_nofail(dev, "driveB", blk_by_legacy_dinfo(fds[1])); 2141 } 2142 qdev_init_nofail(dev); 2143 sbd = SYS_BUS_DEVICE(dev); 2144 sysbus_connect_irq(sbd, 0, irq); 2145 sysbus_mmio_map(sbd, 0, mmio_base); 2146 } 2147 2148 void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base, 2149 DriveInfo **fds, qemu_irq *fdc_tc) 2150 { 2151 DeviceState *dev; 2152 FDCtrlSysBus *sys; 2153 2154 dev = qdev_create(NULL, "SUNW,fdtwo"); 2155 if (fds[0]) { 2156 qdev_prop_set_drive_nofail(dev, "drive", blk_by_legacy_dinfo(fds[0])); 2157 } 2158 qdev_init_nofail(dev); 2159 sys = SYSBUS_FDC(dev); 2160 sysbus_connect_irq(SYS_BUS_DEVICE(sys), 0, irq); 2161 sysbus_mmio_map(SYS_BUS_DEVICE(sys), 0, io_base); 2162 *fdc_tc = qdev_get_gpio_in(dev, 0); 2163 } 2164 2165 static void fdctrl_realize_common(FDCtrl *fdctrl, Error **errp) 2166 { 2167 int i, j; 2168 static int command_tables_inited = 0; 2169 2170 /* Fill 'command_to_handler' lookup table */ 2171 if (!command_tables_inited) { 2172 command_tables_inited = 1; 2173 for (i = ARRAY_SIZE(handlers) - 1; i >= 0; i--) { 2174 for (j = 0; j < sizeof(command_to_handler); j++) { 2175 if ((j & handlers[i].mask) == handlers[i].value) { 2176 command_to_handler[j] = i; 2177 } 2178 } 2179 } 2180 } 2181 2182 FLOPPY_DPRINTF("init controller\n"); 2183 fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN); 2184 fdctrl->fifo_size = 512; 2185 fdctrl->result_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, 2186 fdctrl_result_timer, fdctrl); 2187 2188 fdctrl->version = 0x90; /* Intel 82078 controller */ 2189 fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */ 2190 fdctrl->num_floppies = MAX_FD; 2191 2192 if (fdctrl->dma_chann != -1) { 2193 DMA_register_channel(fdctrl->dma_chann, &fdctrl_transfer_handler, fdctrl); 2194 } 2195 fdctrl_connect_drives(fdctrl, errp); 2196 } 2197 2198 static const MemoryRegionPortio fdc_portio_list[] = { 2199 { 1, 5, 1, .read = fdctrl_read, .write = fdctrl_write }, 2200 { 7, 1, 1, .read = fdctrl_read, .write = fdctrl_write }, 2201 PORTIO_END_OF_LIST(), 2202 }; 2203 2204 static void isabus_fdc_realize(DeviceState *dev, Error **errp) 2205 { 2206 ISADevice *isadev = ISA_DEVICE(dev); 2207 FDCtrlISABus *isa = ISA_FDC(dev); 2208 FDCtrl *fdctrl = &isa->state; 2209 Error *err = NULL; 2210 2211 isa_register_portio_list(isadev, isa->iobase, fdc_portio_list, fdctrl, 2212 "fdc"); 2213 2214 isa_init_irq(isadev, &fdctrl->irq, isa->irq); 2215 fdctrl->dma_chann = isa->dma; 2216 2217 qdev_set_legacy_instance_id(dev, isa->iobase, 2); 2218 fdctrl_realize_common(fdctrl, &err); 2219 if (err != NULL) { 2220 error_propagate(errp, err); 2221 return; 2222 } 2223 } 2224 2225 static void sysbus_fdc_initfn(Object *obj) 2226 { 2227 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 2228 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2229 FDCtrl *fdctrl = &sys->state; 2230 2231 fdctrl->dma_chann = -1; 2232 2233 memory_region_init_io(&fdctrl->iomem, obj, &fdctrl_mem_ops, fdctrl, 2234 "fdc", 0x08); 2235 sysbus_init_mmio(sbd, &fdctrl->iomem); 2236 } 2237 2238 static void sun4m_fdc_initfn(Object *obj) 2239 { 2240 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 2241 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2242 FDCtrl *fdctrl = &sys->state; 2243 2244 fdctrl->sun4m = 1; 2245 2246 memory_region_init_io(&fdctrl->iomem, obj, &fdctrl_mem_strict_ops, 2247 fdctrl, "fdctrl", 0x08); 2248 sysbus_init_mmio(sbd, &fdctrl->iomem); 2249 } 2250 2251 static void sysbus_fdc_common_initfn(Object *obj) 2252 { 2253 DeviceState *dev = DEVICE(obj); 2254 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 2255 FDCtrlSysBus *sys = SYSBUS_FDC(obj); 2256 FDCtrl *fdctrl = &sys->state; 2257 2258 qdev_set_legacy_instance_id(dev, 0 /* io */, 2); /* FIXME */ 2259 2260 sysbus_init_irq(sbd, &fdctrl->irq); 2261 qdev_init_gpio_in(dev, fdctrl_handle_tc, 1); 2262 } 2263 2264 static void sysbus_fdc_common_realize(DeviceState *dev, Error **errp) 2265 { 2266 FDCtrlSysBus *sys = SYSBUS_FDC(dev); 2267 FDCtrl *fdctrl = &sys->state; 2268 2269 fdctrl_realize_common(fdctrl, errp); 2270 } 2271 2272 FDriveType isa_fdc_get_drive_type(ISADevice *fdc, int i) 2273 { 2274 FDCtrlISABus *isa = ISA_FDC(fdc); 2275 2276 return isa->state.drives[i].drive; 2277 } 2278 2279 static const VMStateDescription vmstate_isa_fdc ={ 2280 .name = "fdc", 2281 .version_id = 2, 2282 .minimum_version_id = 2, 2283 .fields = (VMStateField[]) { 2284 VMSTATE_STRUCT(state, FDCtrlISABus, 0, vmstate_fdc, FDCtrl), 2285 VMSTATE_END_OF_LIST() 2286 } 2287 }; 2288 2289 static Property isa_fdc_properties[] = { 2290 DEFINE_PROP_UINT32("iobase", FDCtrlISABus, iobase, 0x3f0), 2291 DEFINE_PROP_UINT32("irq", FDCtrlISABus, irq, 6), 2292 DEFINE_PROP_UINT32("dma", FDCtrlISABus, dma, 2), 2293 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].blk), 2294 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].blk), 2295 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus, state.check_media_rate, 2296 0, true), 2297 DEFINE_PROP_END_OF_LIST(), 2298 }; 2299 2300 static void isabus_fdc_class_init(ObjectClass *klass, void *data) 2301 { 2302 DeviceClass *dc = DEVICE_CLASS(klass); 2303 2304 dc->realize = isabus_fdc_realize; 2305 dc->fw_name = "fdc"; 2306 dc->reset = fdctrl_external_reset_isa; 2307 dc->vmsd = &vmstate_isa_fdc; 2308 dc->props = isa_fdc_properties; 2309 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2310 } 2311 2312 static void isabus_fdc_instance_init(Object *obj) 2313 { 2314 FDCtrlISABus *isa = ISA_FDC(obj); 2315 2316 device_add_bootindex_property(obj, &isa->bootindexA, 2317 "bootindexA", "/floppy@0", 2318 DEVICE(obj), NULL); 2319 device_add_bootindex_property(obj, &isa->bootindexB, 2320 "bootindexB", "/floppy@1", 2321 DEVICE(obj), NULL); 2322 } 2323 2324 static const TypeInfo isa_fdc_info = { 2325 .name = TYPE_ISA_FDC, 2326 .parent = TYPE_ISA_DEVICE, 2327 .instance_size = sizeof(FDCtrlISABus), 2328 .class_init = isabus_fdc_class_init, 2329 .instance_init = isabus_fdc_instance_init, 2330 }; 2331 2332 static const VMStateDescription vmstate_sysbus_fdc ={ 2333 .name = "fdc", 2334 .version_id = 2, 2335 .minimum_version_id = 2, 2336 .fields = (VMStateField[]) { 2337 VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl), 2338 VMSTATE_END_OF_LIST() 2339 } 2340 }; 2341 2342 static Property sysbus_fdc_properties[] = { 2343 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].blk), 2344 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].blk), 2345 DEFINE_PROP_END_OF_LIST(), 2346 }; 2347 2348 static void sysbus_fdc_class_init(ObjectClass *klass, void *data) 2349 { 2350 DeviceClass *dc = DEVICE_CLASS(klass); 2351 2352 dc->props = sysbus_fdc_properties; 2353 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2354 } 2355 2356 static const TypeInfo sysbus_fdc_info = { 2357 .name = "sysbus-fdc", 2358 .parent = TYPE_SYSBUS_FDC, 2359 .instance_init = sysbus_fdc_initfn, 2360 .class_init = sysbus_fdc_class_init, 2361 }; 2362 2363 static Property sun4m_fdc_properties[] = { 2364 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].blk), 2365 DEFINE_PROP_END_OF_LIST(), 2366 }; 2367 2368 static void sun4m_fdc_class_init(ObjectClass *klass, void *data) 2369 { 2370 DeviceClass *dc = DEVICE_CLASS(klass); 2371 2372 dc->props = sun4m_fdc_properties; 2373 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 2374 } 2375 2376 static const TypeInfo sun4m_fdc_info = { 2377 .name = "SUNW,fdtwo", 2378 .parent = TYPE_SYSBUS_FDC, 2379 .instance_init = sun4m_fdc_initfn, 2380 .class_init = sun4m_fdc_class_init, 2381 }; 2382 2383 static void sysbus_fdc_common_class_init(ObjectClass *klass, void *data) 2384 { 2385 DeviceClass *dc = DEVICE_CLASS(klass); 2386 2387 dc->realize = sysbus_fdc_common_realize; 2388 dc->reset = fdctrl_external_reset_sysbus; 2389 dc->vmsd = &vmstate_sysbus_fdc; 2390 } 2391 2392 static const TypeInfo sysbus_fdc_type_info = { 2393 .name = TYPE_SYSBUS_FDC, 2394 .parent = TYPE_SYS_BUS_DEVICE, 2395 .instance_size = sizeof(FDCtrlSysBus), 2396 .instance_init = sysbus_fdc_common_initfn, 2397 .abstract = true, 2398 .class_init = sysbus_fdc_common_class_init, 2399 }; 2400 2401 static void fdc_register_types(void) 2402 { 2403 type_register_static(&isa_fdc_info); 2404 type_register_static(&sysbus_fdc_type_info); 2405 type_register_static(&sysbus_fdc_info); 2406 type_register_static(&sun4m_fdc_info); 2407 } 2408 2409 type_init(fdc_register_types) 2410