2 * QEMU Floppy disk emulator
4 * Copyright (c) 2003 Jocelyn Mayer
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 /********************************************************/
27 /* debug Floppy devices */
28 //#define DEBUG_FLOPPY
31 #define FLOPPY_DPRINTF(fmt, args...) \
32 do { printf("FLOPPY: " fmt , ##args); } while (0)
34 #define FLOPPY_DPRINTF(fmt, args...)
37 #define FLOPPY_ERROR(fmt, args...) \
38 do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
40 /********************************************************/
41 /* Floppy drive emulation */
43 /* Will always be a fixed parameter for us */
44 #define FD_SECTOR_LEN 512
45 #define FD_SECTOR_SC 2 /* Sector size code */
47 /* Floppy disk drive emulation */
48 typedef enum fdisk_type_t {
49 FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */
50 FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */
51 FDRIVE_DISK_720 = 0x03, /* 720 kB disk */
52 FDRIVE_DISK_USER = 0x04, /* User defined geometry */
53 FDRIVE_DISK_NONE = 0x05, /* No disk */
56 typedef enum fdrive_type_t {
57 FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
58 FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
59 FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
60 FDRIVE_DRV_NONE = 0x03, /* No drive connected */
63 typedef enum fdrive_flags_t {
64 FDRIVE_MOTOR_ON = 0x01, /* motor on/off */
65 FDRIVE_REVALIDATE = 0x02, /* Revalidated */
68 typedef enum fdisk_flags_t {
69 FDISK_DBL_SIDES = 0x01,
72 typedef struct fdrive_t {
76 fdrive_flags_t drflags;
77 uint8_t perpendicular; /* 2.88 MB access mode */
82 /* Last operation status */
83 uint8_t dir; /* Direction */
84 uint8_t rw; /* Read/write */
87 uint8_t last_sect; /* Nb sector per track */
88 uint8_t max_track; /* Nb of tracks */
89 uint16_t bps; /* Bytes per sector */
90 uint8_t ro; /* Is read-only */
93 static void fd_init (fdrive_t *drv, BlockDriverState *bs)
98 drv->drive = FDRIVE_DRV_144;
100 drv->drive = FDRIVE_DRV_NONE;
102 drv->perpendicular = 0;
108 static int _fd_sector (uint8_t head, uint8_t track,
109 uint8_t sect, uint8_t last_sect)
111 return (((track * 2) + head) * last_sect) + sect - 1;
114 /* Returns current position, in sectors, for given drive */
115 static int fd_sector (fdrive_t *drv)
117 return _fd_sector(drv->head, drv->track, drv->sect, drv->last_sect);
120 static int fd_seek (fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect,
126 if (track > drv->max_track ||
127 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
128 FLOPPY_ERROR("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
129 head, track, sect, 1,
130 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
131 drv->max_track, drv->last_sect);
134 if (sect > drv->last_sect) {
135 FLOPPY_ERROR("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
136 head, track, sect, 1,
137 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
138 drv->max_track, drv->last_sect);
141 sector = _fd_sector(head, track, sect, drv->last_sect);
143 if (sector != fd_sector(drv)) {
146 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
147 head, track, sect, 1, drv->max_track, drv->last_sect);
152 if (drv->track != track)
161 /* Set drive back to track 0 */
162 static void fd_recalibrate (fdrive_t *drv)
164 FLOPPY_DPRINTF("recalibrate\n");
172 /* Recognize floppy formats */
173 typedef struct fd_format_t {
179 const unsigned char *str;
182 static fd_format_t fd_formats[] = {
183 /* First entry is default format */
184 /* 1.44 MB 3"1/2 floppy disks */
185 { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, "1.44 MB 3\"1/2", },
186 { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, "1.6 MB 3\"1/2", },
187 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, "1.68 MB 3\"1/2", },
188 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, "1.72 MB 3\"1/2", },
189 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, "1.74 MB 3\"1/2", },
190 { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, "1.76 MB 3\"1/2", },
191 { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, "1.84 MB 3\"1/2", },
192 { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, "1.92 MB 3\"1/2", },
193 /* 2.88 MB 3"1/2 floppy disks */
194 { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, "2.88 MB 3\"1/2", },
195 { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, "3.12 MB 3\"1/2", },
196 { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, "3.2 MB 3\"1/2", },
197 { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, "3.52 MB 3\"1/2", },
198 { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, "3.84 MB 3\"1/2", },
199 /* 720 kB 3"1/2 floppy disks */
200 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, "720 kB 3\"1/2", },
201 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, "800 kB 3\"1/2", },
202 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, "820 kB 3\"1/2", },
203 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, "830 kB 3\"1/2", },
204 { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, "1.04 MB 3\"1/2", },
205 { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, "1.12 MB 3\"1/2", },
206 /* 1.2 MB 5"1/4 floppy disks */
207 { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, "1.2 kB 5\"1/4", },
208 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, "1.44 MB 5\"1/4", },
209 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, "1.48 MB 5\"1/4", },
210 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, "1.49 MB 5\"1/4", },
211 { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, "1.6 MB 5\"1/4", },
212 /* 720 kB 5"1/4 floppy disks */
213 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, "720 kB 5\"1/4", },
214 { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, "880 kB 5\"1/4", },
215 /* 360 kB 5"1/4 floppy disks */
216 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, "360 kB 5\"1/4", },
217 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, "180 kB 5\"1/4", },
218 { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, "410 kB 5\"1/4", },
219 { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, "420 kB 5\"1/4", },
220 /* 320 kB 5"1/4 floppy disks */
221 { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, "320 kB 5\"1/4", },
222 { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, "160 kB 5\"1/4", },
223 /* 360 kB must match 5"1/4 better than 3"1/2... */
224 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 0, "360 kB 3\"1/2", },
226 { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, -1, -1, 0, NULL, },
229 /* Revalidate a disk drive after a disk change */
230 static void fd_revalidate (fdrive_t *drv)
233 int64_t nb_sectors, size;
234 int i, first_match, match;
235 int nb_heads, max_track, last_sect, ro;
237 FLOPPY_DPRINTF("revalidate\n");
238 drv->drflags &= ~FDRIVE_REVALIDATE;
239 if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
240 ro = bdrv_is_read_only(drv->bs);
241 bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
242 if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
243 printf("User defined disk (%d %d %d)",
244 nb_heads - 1, max_track, last_sect);
246 bdrv_get_geometry(drv->bs, &nb_sectors);
250 parse = &fd_formats[i];
251 if (parse->drive == FDRIVE_DRV_NONE)
253 if (drv->drive == parse->drive ||
254 drv->drive == FDRIVE_DRV_NONE) {
255 size = (parse->max_head + 1) * parse->max_track *
257 if (nb_sectors == size) {
261 if (first_match == -1)
266 if (first_match == -1)
270 parse = &fd_formats[match];
272 nb_heads = parse->max_head + 1;
273 max_track = parse->max_track;
274 last_sect = parse->last_sect;
275 drv->drive = parse->drive;
276 printf("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
277 nb_heads, max_track, last_sect, ro ? "ro" : "rw");
280 drv->flags &= ~FDISK_DBL_SIDES;
282 drv->flags |= FDISK_DBL_SIDES;
284 drv->max_track = max_track;
285 drv->last_sect = last_sect;
288 printf("No disk in drive\n");
291 drv->flags &= ~FDISK_DBL_SIDES;
293 drv->drflags |= FDRIVE_REVALIDATE;
297 static void fd_start (fdrive_t *drv)
299 drv->drflags |= FDRIVE_MOTOR_ON;
302 static void fd_stop (fdrive_t *drv)
304 drv->drflags &= ~FDRIVE_MOTOR_ON;
307 /* Re-initialise a drives (motor off, repositioned) */
308 static void fd_reset (fdrive_t *drv)
314 /********************************************************/
315 /* Intel 82078 floppy disk controler emulation */
317 static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq);
318 static void fdctrl_reset_fifo (fdctrl_t *fdctrl);
319 static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size);
320 static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status);
322 static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl);
323 static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl);
324 static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value);
325 static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl);
326 static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value);
327 static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl);
328 static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value);
329 static uint32_t fdctrl_read_data (fdctrl_t *fdctrl);
330 static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value);
331 static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl);
334 FD_CTRL_ACTIVE = 0x01,
335 FD_CTRL_RESET = 0x02,
336 FD_CTRL_SLEEP = 0x04,
351 FD_STATE_STATUS = 0x01,
352 FD_STATE_DATA = 0x02,
353 FD_STATE_STATE = 0x03,
354 FD_STATE_MULTI = 0x10,
355 FD_STATE_SEEK = 0x20,
356 FD_STATE_FORMAT = 0x40,
359 #define FD_STATE(state) ((state) & FD_STATE_STATE)
360 #define FD_SET_STATE(state, new_state) \
361 do { (state) = ((state) & ~FD_STATE_STATE) | (new_state); } while (0)
362 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
363 #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
364 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
368 /* Controler's identification */
374 /* Controler state */
380 uint8_t fifo[FD_SECTOR_LEN];
386 /* States kept only to be returned back */
390 /* precompensation */
394 /* Power down config (also with status regB access mode */
400 static uint32_t fdctrl_read (void *opaque, uint32_t reg)
402 fdctrl_t *fdctrl = opaque;
405 switch (reg & 0x07) {
407 retval = fdctrl_read_statusB(fdctrl);
410 retval = fdctrl_read_dor(fdctrl);
413 retval = fdctrl_read_tape(fdctrl);
416 retval = fdctrl_read_main_status(fdctrl);
419 retval = fdctrl_read_data(fdctrl);
422 retval = fdctrl_read_dir(fdctrl);
425 retval = (uint32_t)(-1);
432 static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
434 fdctrl_t *fdctrl = opaque;
436 switch (reg & 0x07) {
438 fdctrl_write_dor(fdctrl, value);
441 fdctrl_write_tape(fdctrl, value);
444 fdctrl_write_rate(fdctrl, value);
447 fdctrl_write_data(fdctrl, value);
454 static void fd_change_cb (void *opaque)
456 fdrive_t *drv = opaque;
458 FLOPPY_DPRINTF("disk change\n");
462 fdctrl_reset_fifo(drv->fdctrl);
463 fdctrl_raise_irq(drv->fdctrl, 0x20);
467 fdctrl_t *fdctrl_init (int irq_lvl, int dma_chann, int mem_mapped,
469 BlockDriverState **fds)
475 FLOPPY_DPRINTF("init controler\n");
476 fdctrl = qemu_mallocz(sizeof(fdctrl_t));
479 fdctrl->version = 0x90; /* Intel 82078 controler */
480 fdctrl->irq_lvl = irq_lvl;
481 fdctrl->dma_chann = dma_chann;
482 fdctrl->io_base = io_base;
483 fdctrl->config = 0x60; /* Implicit seek, polling & FIFO enabled */
484 if (fdctrl->dma_chann != -1) {
486 DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl);
490 for (i = 0; i < 2; i++) {
491 fd_init(&fdctrl->drives[i], fds[i]);
493 bdrv_set_change_cb(fds[i],
494 &fd_change_cb, &fdctrl->drives[i]);
497 fdctrl_reset(fdctrl, 0);
498 fdctrl->state = FD_CTRL_ACTIVE;
500 FLOPPY_ERROR("memory mapped floppy not supported by now !\n");
502 io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write);
503 cpu_register_physical_memory(base, 0x08, io_mem);
506 register_ioport_read(io_base + 0x01, 5, 1, &fdctrl_read, fdctrl);
507 register_ioport_read(io_base + 0x07, 1, 1, &fdctrl_read, fdctrl);
508 register_ioport_write(io_base + 0x01, 5, 1, &fdctrl_write, fdctrl);
509 register_ioport_write(io_base + 0x07, 1, 1, &fdctrl_write, fdctrl);
511 for (i = 0; i < 2; i++) {
512 fd_revalidate(&fdctrl->drives[i]);
518 /* XXX: may change if moved to bdrv */
519 int fdctrl_get_drive_type(fdctrl_t *fdctrl, int drive_num)
521 return fdctrl->drives[drive_num].drive;
524 /* Change IRQ state */
525 static void fdctrl_reset_irq (fdctrl_t *fdctrl)
527 if (fdctrl->state & FD_CTRL_INTR) {
528 pic_set_irq(fdctrl->irq_lvl, 0);
529 fdctrl->state &= ~(FD_CTRL_INTR | FD_CTRL_SLEEP | FD_CTRL_BUSY);
533 static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status)
535 if (~(fdctrl->state & FD_CTRL_INTR)) {
536 pic_set_irq(fdctrl->irq_lvl, 1);
537 fdctrl->state |= FD_CTRL_INTR;
539 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", status);
540 fdctrl->int_status = status;
543 /* Reset controler */
544 static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq)
548 FLOPPY_DPRINTF("reset controler\n");
549 fdctrl_reset_irq(fdctrl);
550 /* Initialise controler */
553 fdctrl->data_pos = 0;
554 fdctrl->data_len = 0;
555 fdctrl->data_state = FD_STATE_CMD;
556 fdctrl->data_dir = FD_DIR_WRITE;
557 for (i = 0; i < MAX_FD; i++)
558 fd_reset(&fdctrl->drives[i]);
559 fdctrl_reset_fifo(fdctrl);
561 fdctrl_raise_irq(fdctrl, 0x20);
564 static inline fdrive_t *drv0 (fdctrl_t *fdctrl)
566 return &fdctrl->drives[fdctrl->bootsel];
569 static inline fdrive_t *drv1 (fdctrl_t *fdctrl)
571 return &fdctrl->drives[1 - fdctrl->bootsel];
574 static fdrive_t *get_cur_drv (fdctrl_t *fdctrl)
576 return fdctrl->cur_drv == 0 ? drv0(fdctrl) : drv1(fdctrl);
579 /* Status B register : 0x01 (read-only) */
580 static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl)
582 fdctrl_reset_irq(fdctrl);
583 FLOPPY_DPRINTF("status register: 0x00\n");
588 /* Digital output register : 0x02 */
589 static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl)
593 /* Drive motors state indicators */
594 if (drv0(fdctrl)->drflags & FDRIVE_MOTOR_ON)
596 if (drv1(fdctrl)->drflags & FDRIVE_MOTOR_ON)
599 retval |= fdctrl->dma_en << 3;
600 /* Reset indicator */
601 retval |= (fdctrl->state & FD_CTRL_RESET) == 0 ? 0x04 : 0;
603 retval |= fdctrl->cur_drv;
604 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
609 static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value)
611 fdctrl_reset_irq(fdctrl);
613 if (fdctrl->state & FD_CTRL_RESET) {
614 if (!(value & 0x04)) {
615 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
619 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
620 /* Drive motors state indicators */
622 fd_start(drv1(fdctrl));
624 fd_stop(drv1(fdctrl));
626 fd_start(drv0(fdctrl));
628 fd_stop(drv0(fdctrl));
631 if (fdctrl->dma_chann != -1)
632 fdctrl->dma_en = 1 - ((value >> 3) & 1);
635 if (!(value & 0x04)) {
636 if (!(fdctrl->state & FD_CTRL_RESET)) {
637 FLOPPY_DPRINTF("controler enter RESET state\n");
638 fdctrl->state |= FD_CTRL_RESET;
639 fdctrl_reset(fdctrl, 1);
642 if (fdctrl->state & FD_CTRL_RESET) {
643 FLOPPY_DPRINTF("controler out of RESET state\n");
644 fdctrl->state &= ~(FD_CTRL_RESET | FD_CTRL_SLEEP);
648 fdctrl->cur_drv = value & 1;
651 /* Tape drive register : 0x03 */
652 static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl)
656 fdctrl_reset_irq(fdctrl);
657 /* Disk boot selection indicator */
658 retval |= fdctrl->bootsel << 2;
659 /* Tape indicators: never allowed */
660 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
665 static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value)
667 fdctrl_reset_irq(fdctrl);
669 if (fdctrl->state & FD_CTRL_RESET) {
670 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
673 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
674 /* Disk boot selection indicator */
675 fdctrl->bootsel = (value >> 2) & 1;
676 /* Tape indicators: never allow */
679 /* Main status register : 0x04 (read) */
680 static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl)
684 fdctrl_reset_irq(fdctrl);
685 fdctrl->state &= ~(FD_CTRL_SLEEP | FD_CTRL_RESET);
686 if (!(fdctrl->state & FD_CTRL_BUSY)) {
687 /* Data transfer allowed */
689 /* Data transfer direction indicator */
690 if (fdctrl->data_dir == FD_DIR_READ)
693 /* Should handle 0x20 for SPECIFY command */
694 /* Command busy indicator */
695 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA ||
696 FD_STATE(fdctrl->data_state) == FD_STATE_STATUS)
698 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
703 /* Data select rate register : 0x04 (write) */
704 static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value)
706 fdctrl_reset_irq(fdctrl);
708 if (fdctrl->state & FD_CTRL_RESET) {
709 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
712 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
713 /* Reset: autoclear */
715 fdctrl->state |= FD_CTRL_RESET;
716 fdctrl_reset(fdctrl, 1);
717 fdctrl->state &= ~FD_CTRL_RESET;
720 fdctrl->state |= FD_CTRL_SLEEP;
721 fdctrl_reset(fdctrl, 1);
723 // fdctrl.precomp = (value >> 2) & 0x07;
726 /* Digital input register : 0x07 (read-only) */
727 static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl)
731 fdctrl_reset_irq(fdctrl);
732 if (drv0(fdctrl)->drflags & FDRIVE_REVALIDATE ||
733 drv1(fdctrl)->drflags & FDRIVE_REVALIDATE)
736 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
737 drv0(fdctrl)->drflags &= ~FDRIVE_REVALIDATE;
738 drv1(fdctrl)->drflags &= ~FDRIVE_REVALIDATE;
743 /* FIFO state control */
744 static void fdctrl_reset_fifo (fdctrl_t *fdctrl)
746 fdctrl->data_dir = FD_DIR_WRITE;
747 fdctrl->data_pos = 0;
748 FD_SET_STATE(fdctrl->data_state, FD_STATE_CMD);
751 /* Set FIFO status for the host to read */
752 static void fdctrl_set_fifo (fdctrl_t *fdctrl, int fifo_len, int do_irq)
754 fdctrl->data_dir = FD_DIR_READ;
755 fdctrl->data_len = fifo_len;
756 fdctrl->data_pos = 0;
757 FD_SET_STATE(fdctrl->data_state, FD_STATE_STATUS);
759 fdctrl_raise_irq(fdctrl, 0x00);
762 /* Set an error: unimplemented/unknown command */
763 static void fdctrl_unimplemented (fdctrl_t *fdctrl)
768 cur_drv = get_cur_drv(fdctrl);
769 fdctrl->fifo[0] = 0x60 | (cur_drv->head << 1) | fdctrl->cur_drv;
770 fdctrl->fifo[1] = 0x00;
771 fdctrl->fifo[2] = 0x00;
772 fdctrl_set_fifo(fdctrl, 3, 1);
774 // fdctrl_reset_fifo(fdctrl);
775 fdctrl->fifo[0] = 0x80;
776 fdctrl_set_fifo(fdctrl, 1, 0);
780 /* Callback for transfer end (stop or abort) */
781 static void fdctrl_stop_transfer (fdctrl_t *fdctrl, uint8_t status0,
782 uint8_t status1, uint8_t status2)
786 cur_drv = get_cur_drv(fdctrl);
787 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
788 status0, status1, status2,
789 status0 | (cur_drv->head << 1) | fdctrl->cur_drv);
790 fdctrl->fifo[0] = status0 | (cur_drv->head << 1) | fdctrl->cur_drv;
791 fdctrl->fifo[1] = status1;
792 fdctrl->fifo[2] = status2;
793 fdctrl->fifo[3] = cur_drv->track;
794 fdctrl->fifo[4] = cur_drv->head;
795 fdctrl->fifo[5] = cur_drv->sect;
796 fdctrl->fifo[6] = FD_SECTOR_SC;
797 fdctrl->data_dir = FD_DIR_READ;
798 if (fdctrl->state & FD_CTRL_BUSY)
799 DMA_release_DREQ(fdctrl->dma_chann);
800 fdctrl_set_fifo(fdctrl, 7, 1);
803 /* Prepare a data transfer (either DMA or FIFO) */
804 static void fdctrl_start_transfer (fdctrl_t *fdctrl, int direction)
810 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
811 cur_drv = get_cur_drv(fdctrl);
812 kt = fdctrl->fifo[2];
813 kh = fdctrl->fifo[3];
814 ks = fdctrl->fifo[4];
815 FLOPPY_DPRINTF("Start tranfert at %d %d %02x %02x (%d)\n",
816 fdctrl->cur_drv, kh, kt, ks,
817 _fd_sector(kh, kt, ks, cur_drv->last_sect));
819 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
822 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
823 fdctrl->fifo[3] = kt;
824 fdctrl->fifo[4] = kh;
825 fdctrl->fifo[5] = ks;
829 fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
830 fdctrl->fifo[3] = kt;
831 fdctrl->fifo[4] = kh;
832 fdctrl->fifo[5] = ks;
835 /* No seek enabled */
836 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
837 fdctrl->fifo[3] = kt;
838 fdctrl->fifo[4] = kh;
839 fdctrl->fifo[5] = ks;
847 /* Set the FIFO state */
848 fdctrl->data_dir = direction;
849 fdctrl->data_pos = 0;
850 FD_SET_STATE(fdctrl->data_state, FD_STATE_DATA); /* FIFO ready for data */
851 if (fdctrl->fifo[0] & 0x80)
852 fdctrl->data_state |= FD_STATE_MULTI;
854 fdctrl->data_state &= ~FD_STATE_MULTI;
856 fdctrl->data_state |= FD_STATE_SEEK;
858 fdctrl->data_state &= ~FD_STATE_SEEK;
859 if (fdctrl->fifo[5] == 00) {
860 fdctrl->data_len = fdctrl->fifo[8];
863 fdctrl->data_len = 128 << fdctrl->fifo[5];
864 tmp = (cur_drv->last_sect - ks + 1);
865 if (fdctrl->fifo[0] & 0x80)
866 tmp += cur_drv->last_sect;
867 fdctrl->data_len *= tmp;
869 if (fdctrl->dma_en) {
871 /* DMA transfer are enabled. Check if DMA channel is well programmed */
872 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
873 dma_mode = (dma_mode >> 2) & 3;
874 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
876 (128 << fdctrl->fifo[5]) *
877 (cur_drv->last_sect - ks + 1), fdctrl->data_len);
878 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
879 direction == FD_DIR_SCANH) && dma_mode == 0) ||
880 (direction == FD_DIR_WRITE && dma_mode == 2) ||
881 (direction == FD_DIR_READ && dma_mode == 1)) {
882 /* No access is allowed until DMA transfer has completed */
883 fdctrl->state |= FD_CTRL_BUSY;
884 /* Now, we just have to wait for the DMA controler to
887 DMA_hold_DREQ(fdctrl->dma_chann);
888 DMA_schedule(fdctrl->dma_chann);
891 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
894 FLOPPY_DPRINTF("start non-DMA transfer\n");
895 /* IO based transfer: calculate len */
896 fdctrl_raise_irq(fdctrl, 0x00);
901 /* Prepare a transfer of deleted data */
902 static void fdctrl_start_transfer_del (fdctrl_t *fdctrl, int direction)
904 /* We don't handle deleted data,
905 * so we don't return *ANYTHING*
907 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
910 /* handlers for DMA transfers */
911 static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size)
915 int len, start_pos, rel_pos;
916 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
919 fdctrl_reset_irq(fdctrl);
920 if (!(fdctrl->state & FD_CTRL_BUSY)) {
921 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
924 cur_drv = get_cur_drv(fdctrl);
925 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
926 fdctrl->data_dir == FD_DIR_SCANH)
928 if (size > fdctrl->data_len)
929 size = fdctrl->data_len;
930 if (cur_drv->bs == NULL) {
931 if (fdctrl->data_dir == FD_DIR_WRITE)
932 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
934 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
938 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
939 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < size;) {
940 len = size - fdctrl->data_pos;
941 if (len + rel_pos > FD_SECTOR_LEN)
942 len = FD_SECTOR_LEN - rel_pos;
943 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x %02x "
944 "(%d-0x%08x 0x%08x)\n", len, size, fdctrl->data_pos,
945 fdctrl->data_len, fdctrl->cur_drv, cur_drv->head,
946 cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
947 fd_sector(cur_drv) * 512, addr);
948 if (fdctrl->data_dir != FD_DIR_WRITE ||
949 len < FD_SECTOR_LEN || rel_pos != 0) {
950 /* READ & SCAN commands and realign to a sector for WRITE */
951 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
952 fdctrl->fifo, 1) < 0) {
953 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
955 /* Sure, image size is too small... */
956 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
959 switch (fdctrl->data_dir) {
962 cpu_physical_memory_write(addr + fdctrl->data_pos,
963 fdctrl->fifo + rel_pos, len);
967 cpu_physical_memory_read(addr + fdctrl->data_pos,
968 fdctrl->fifo + rel_pos, len);
969 if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
970 fdctrl->fifo, 1) < 0) {
971 FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv));
972 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
979 uint8_t tmpbuf[FD_SECTOR_LEN];
981 cpu_physical_memory_read(addr + fdctrl->data_pos,
983 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
988 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
989 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
996 fdctrl->data_pos += len;
997 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
999 /* Seek to next sector */
1001 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
1002 cur_drv->head, cur_drv->track, cur_drv->sect,
1004 fdctrl->data_pos - size);
1005 if (cur_drv->sect > cur_drv->last_sect) {
1007 if (FD_MULTI_TRACK(fdctrl->data_state)) {
1008 if (cur_drv->head == 0 &&
1009 (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1014 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1021 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1022 cur_drv->head, cur_drv->track,
1023 cur_drv->sect, fd_sector(cur_drv));
1028 len = fdctrl->data_pos - start_pos;
1029 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1030 fdctrl->data_pos, len, fdctrl->data_len);
1031 if (fdctrl->data_dir == FD_DIR_SCANE ||
1032 fdctrl->data_dir == FD_DIR_SCANL ||
1033 fdctrl->data_dir == FD_DIR_SCANH)
1035 if (FD_DID_SEEK(fdctrl->data_state))
1037 fdctrl->data_len -= len;
1038 // if (fdctrl->data_len == 0)
1039 fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1045 /* Data register : 0x05 */
1046 static uint32_t fdctrl_read_data (fdctrl_t *fdctrl)
1049 uint32_t retval = 0;
1052 fdctrl_reset_irq(fdctrl);
1053 cur_drv = get_cur_drv(fdctrl);
1054 fdctrl->state &= ~FD_CTRL_SLEEP;
1055 if (FD_STATE(fdctrl->data_state) == FD_STATE_CMD) {
1056 FLOPPY_ERROR("can't read data in CMD state\n");
1059 pos = fdctrl->data_pos;
1060 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
1061 pos %= FD_SECTOR_LEN;
1063 len = fdctrl->data_len - fdctrl->data_pos;
1064 if (len > FD_SECTOR_LEN)
1065 len = FD_SECTOR_LEN;
1066 bdrv_read(cur_drv->bs, fd_sector(cur_drv),
1070 retval = fdctrl->fifo[pos];
1071 if (++fdctrl->data_pos == fdctrl->data_len) {
1072 fdctrl->data_pos = 0;
1073 /* Switch from transfert mode to status mode
1074 * then from status mode to command mode
1076 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
1077 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
1079 fdctrl_reset_fifo(fdctrl);
1081 FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1086 static void fdctrl_format_sector (fdctrl_t *fdctrl)
1092 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1093 cur_drv = get_cur_drv(fdctrl);
1094 kt = fdctrl->fifo[6];
1095 kh = fdctrl->fifo[7];
1096 ks = fdctrl->fifo[8];
1097 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1098 fdctrl->cur_drv, kh, kt, ks,
1099 _fd_sector(kh, kt, ks, cur_drv->last_sect));
1101 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
1104 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
1105 fdctrl->fifo[3] = kt;
1106 fdctrl->fifo[4] = kh;
1107 fdctrl->fifo[5] = ks;
1111 fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
1112 fdctrl->fifo[3] = kt;
1113 fdctrl->fifo[4] = kh;
1114 fdctrl->fifo[5] = ks;
1117 /* No seek enabled */
1118 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
1119 fdctrl->fifo[3] = kt;
1120 fdctrl->fifo[4] = kh;
1121 fdctrl->fifo[5] = ks;
1125 fdctrl->data_state |= FD_STATE_SEEK;
1130 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1131 if (cur_drv->bs == NULL ||
1132 bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1133 FLOPPY_ERROR("formating sector %d\n", fd_sector(cur_drv));
1134 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
1136 if (cur_drv->sect == cur_drv->last_sect) {
1137 fdctrl->data_state &= ~FD_STATE_FORMAT;
1138 /* Last sector done */
1139 if (FD_DID_SEEK(fdctrl->data_state))
1140 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
1142 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1145 fdctrl->data_pos = 0;
1146 fdctrl->data_len = 4;
1151 static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
1155 fdctrl_reset_irq(fdctrl);
1156 cur_drv = get_cur_drv(fdctrl);
1158 if (fdctrl->state & FD_CTRL_RESET) {
1159 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
1162 fdctrl->state &= ~FD_CTRL_SLEEP;
1163 if (FD_STATE(fdctrl->data_state) == FD_STATE_STATUS) {
1164 FLOPPY_ERROR("can't write data in status mode\n");
1167 /* Is it write command time ? */
1168 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
1169 /* FIFO data write */
1170 fdctrl->fifo[fdctrl->data_pos++] = value;
1171 if (fdctrl->data_pos % FD_SECTOR_LEN == (FD_SECTOR_LEN - 1) ||
1172 fdctrl->data_pos == fdctrl->data_len) {
1173 bdrv_write(cur_drv->bs, fd_sector(cur_drv),
1174 fdctrl->fifo, FD_SECTOR_LEN);
1176 /* Switch from transfert mode to status mode
1177 * then from status mode to command mode
1179 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
1180 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
1183 if (fdctrl->data_pos == 0) {
1185 switch (value & 0x5F) {
1188 FLOPPY_DPRINTF("READ command\n");
1189 /* 8 parameters cmd */
1190 fdctrl->data_len = 9;
1193 /* READ_DELETED variants */
1194 FLOPPY_DPRINTF("READ_DELETED command\n");
1195 /* 8 parameters cmd */
1196 fdctrl->data_len = 9;
1199 /* SCAN_EQUAL variants */
1200 FLOPPY_DPRINTF("SCAN_EQUAL command\n");
1201 /* 8 parameters cmd */
1202 fdctrl->data_len = 9;
1205 /* VERIFY variants */
1206 FLOPPY_DPRINTF("VERIFY command\n");
1207 /* 8 parameters cmd */
1208 fdctrl->data_len = 9;
1211 /* SCAN_LOW_OR_EQUAL variants */
1212 FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
1213 /* 8 parameters cmd */
1214 fdctrl->data_len = 9;
1217 /* SCAN_HIGH_OR_EQUAL variants */
1218 FLOPPY_DPRINTF("SCAN_HIGH_OR_EQUAL command\n");
1219 /* 8 parameters cmd */
1220 fdctrl->data_len = 9;
1225 switch (value & 0x7F) {
1227 /* WRITE variants */
1228 FLOPPY_DPRINTF("WRITE command\n");
1229 /* 8 parameters cmd */
1230 fdctrl->data_len = 9;
1233 /* WRITE_DELETED variants */
1234 FLOPPY_DPRINTF("WRITE_DELETED command\n");
1235 /* 8 parameters cmd */
1236 fdctrl->data_len = 9;
1244 FLOPPY_DPRINTF("SPECIFY command\n");
1245 /* 1 parameter cmd */
1246 fdctrl->data_len = 3;
1249 /* SENSE_DRIVE_STATUS */
1250 FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
1251 /* 1 parameter cmd */
1252 fdctrl->data_len = 2;
1256 FLOPPY_DPRINTF("RECALIBRATE command\n");
1257 /* 1 parameter cmd */
1258 fdctrl->data_len = 2;
1261 /* SENSE_INTERRUPT_STATUS */
1262 FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
1263 fdctrl->int_status);
1264 /* No parameters cmd: returns status if no interrupt */
1266 fdctrl->int_status | (cur_drv->head << 2) | fdctrl->cur_drv;
1267 fdctrl->fifo[1] = cur_drv->track;
1268 fdctrl_set_fifo(fdctrl, 2, 0);
1269 fdctrl_reset_irq(fdctrl);
1270 fdctrl->int_status = 0xC0;
1274 FLOPPY_DPRINTF("DUMPREG command\n");
1275 /* Drives position */
1276 fdctrl->fifo[0] = drv0(fdctrl)->track;
1277 fdctrl->fifo[1] = drv1(fdctrl)->track;
1278 fdctrl->fifo[2] = 0;
1279 fdctrl->fifo[3] = 0;
1281 fdctrl->fifo[4] = fdctrl->timer0;
1282 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | fdctrl->dma_en;
1283 fdctrl->fifo[6] = cur_drv->last_sect;
1284 fdctrl->fifo[7] = (fdctrl->lock << 7) |
1285 (cur_drv->perpendicular << 2);
1286 fdctrl->fifo[8] = fdctrl->config;
1287 fdctrl->fifo[9] = fdctrl->precomp_trk;
1288 fdctrl_set_fifo(fdctrl, 10, 0);
1292 FLOPPY_DPRINTF("SEEK command\n");
1293 /* 2 parameters cmd */
1294 fdctrl->data_len = 3;
1298 FLOPPY_DPRINTF("VERSION command\n");
1299 /* No parameters cmd */
1300 /* Controler's version */
1301 fdctrl->fifo[0] = fdctrl->version;
1302 fdctrl_set_fifo(fdctrl, 1, 1);
1305 /* PERPENDICULAR_MODE */
1306 FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
1307 /* 1 parameter cmd */
1308 fdctrl->data_len = 2;
1312 FLOPPY_DPRINTF("CONFIGURE command\n");
1313 /* 3 parameters cmd */
1314 fdctrl->data_len = 4;
1318 FLOPPY_DPRINTF("UNLOCK command\n");
1319 /* No parameters cmd */
1321 fdctrl->fifo[0] = 0;
1322 fdctrl_set_fifo(fdctrl, 1, 0);
1325 /* POWERDOWN_MODE */
1326 FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
1327 /* 2 parameters cmd */
1328 fdctrl->data_len = 3;
1332 FLOPPY_DPRINTF("PART_ID command\n");
1333 /* No parameters cmd */
1334 fdctrl->fifo[0] = 0x41; /* Stepping 1 */
1335 fdctrl_set_fifo(fdctrl, 1, 0);
1339 FLOPPY_DPRINTF("SAVE command\n");
1340 /* No parameters cmd */
1341 fdctrl->fifo[0] = 0;
1342 fdctrl->fifo[1] = 0;
1343 /* Drives position */
1344 fdctrl->fifo[2] = drv0(fdctrl)->track;
1345 fdctrl->fifo[3] = drv1(fdctrl)->track;
1346 fdctrl->fifo[4] = 0;
1347 fdctrl->fifo[5] = 0;
1349 fdctrl->fifo[6] = fdctrl->timer0;
1350 fdctrl->fifo[7] = fdctrl->timer1;
1351 fdctrl->fifo[8] = cur_drv->last_sect;
1352 fdctrl->fifo[9] = (fdctrl->lock << 7) |
1353 (cur_drv->perpendicular << 2);
1354 fdctrl->fifo[10] = fdctrl->config;
1355 fdctrl->fifo[11] = fdctrl->precomp_trk;
1356 fdctrl->fifo[12] = fdctrl->pwrd;
1357 fdctrl->fifo[13] = 0;
1358 fdctrl->fifo[14] = 0;
1359 fdctrl_set_fifo(fdctrl, 15, 1);
1363 FLOPPY_DPRINTF("OPTION command\n");
1364 /* 1 parameter cmd */
1365 fdctrl->data_len = 2;
1369 FLOPPY_DPRINTF("READ_TRACK command\n");
1370 /* 8 parameters cmd */
1371 fdctrl->data_len = 9;
1375 FLOPPY_DPRINTF("READ_ID command\n");
1376 /* 1 parameter cmd */
1377 fdctrl->data_len = 2;
1381 FLOPPY_DPRINTF("RESTORE command\n");
1382 /* 17 parameters cmd */
1383 fdctrl->data_len = 18;
1387 FLOPPY_DPRINTF("FORMAT_TRACK command\n");
1388 /* 5 parameters cmd */
1389 fdctrl->data_len = 6;
1392 /* DRIVE_SPECIFICATION_COMMAND */
1393 FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
1394 /* 5 parameters cmd */
1395 fdctrl->data_len = 6;
1398 /* RELATIVE_SEEK_OUT */
1399 FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
1400 /* 2 parameters cmd */
1401 fdctrl->data_len = 3;
1405 FLOPPY_DPRINTF("LOCK command\n");
1406 /* No parameters cmd */
1408 fdctrl->fifo[0] = 0x10;
1409 fdctrl_set_fifo(fdctrl, 1, 1);
1412 /* FORMAT_AND_WRITE */
1413 FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
1414 /* 10 parameters cmd */
1415 fdctrl->data_len = 11;
1418 /* RELATIVE_SEEK_IN */
1419 FLOPPY_DPRINTF("RELATIVE_SEEK_IN command\n");
1420 /* 2 parameters cmd */
1421 fdctrl->data_len = 3;
1424 /* Unknown command */
1425 FLOPPY_ERROR("unknown command: 0x%02x\n", value);
1426 fdctrl_unimplemented(fdctrl);
1431 FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
1432 fdctrl->fifo[fdctrl->data_pos] = value;
1433 if (++fdctrl->data_pos == fdctrl->data_len) {
1434 /* We now have all parameters
1435 * and will be able to treat the command
1437 if (fdctrl->data_state & FD_STATE_FORMAT) {
1438 fdctrl_format_sector(fdctrl);
1441 switch (fdctrl->fifo[0] & 0x1F) {
1445 FLOPPY_DPRINTF("treat READ command\n");
1446 fdctrl_start_transfer(fdctrl, FD_DIR_READ);
1450 /* READ_DELETED variants */
1451 // FLOPPY_DPRINTF("treat READ_DELETED command\n");
1452 FLOPPY_ERROR("treat READ_DELETED command\n");
1453 fdctrl_start_transfer_del(fdctrl, FD_DIR_READ);
1456 /* VERIFY variants */
1457 // FLOPPY_DPRINTF("treat VERIFY command\n");
1458 FLOPPY_ERROR("treat VERIFY command\n");
1459 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
1462 /* SCAN_EQUAL variants */
1463 // FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
1464 FLOPPY_ERROR("treat SCAN_EQUAL command\n");
1465 fdctrl_start_transfer(fdctrl, FD_DIR_SCANE);
1468 /* SCAN_LOW_OR_EQUAL variants */
1469 // FLOPPY_DPRINTF("treat SCAN_LOW_OR_EQUAL command\n");
1470 FLOPPY_ERROR("treat SCAN_LOW_OR_EQUAL command\n");
1471 fdctrl_start_transfer(fdctrl, FD_DIR_SCANL);
1474 /* SCAN_HIGH_OR_EQUAL variants */
1475 // FLOPPY_DPRINTF("treat SCAN_HIGH_OR_EQUAL command\n");
1476 FLOPPY_ERROR("treat SCAN_HIGH_OR_EQUAL command\n");
1477 fdctrl_start_transfer(fdctrl, FD_DIR_SCANH);
1482 switch (fdctrl->fifo[0] & 0x3F) {
1484 /* WRITE variants */
1485 FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl->fifo[0]);
1486 fdctrl_start_transfer(fdctrl, FD_DIR_WRITE);
1489 /* WRITE_DELETED variants */
1490 // FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
1491 FLOPPY_ERROR("treat WRITE_DELETED command\n");
1492 fdctrl_start_transfer_del(fdctrl, FD_DIR_WRITE);
1497 switch (fdctrl->fifo[0]) {
1500 FLOPPY_DPRINTF("treat SPECIFY command\n");
1501 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
1502 fdctrl->timer1 = fdctrl->fifo[1] >> 1;
1503 fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ;
1504 /* No result back */
1505 fdctrl_reset_fifo(fdctrl);
1508 /* SENSE_DRIVE_STATUS */
1509 FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
1510 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1511 cur_drv = get_cur_drv(fdctrl);
1512 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1513 /* 1 Byte status back */
1514 fdctrl->fifo[0] = (cur_drv->ro << 6) |
1515 (cur_drv->track == 0 ? 0x10 : 0x00) |
1517 fdctrl_set_fifo(fdctrl, 1, 0);
1521 FLOPPY_DPRINTF("treat RECALIBRATE command\n");
1522 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1523 cur_drv = get_cur_drv(fdctrl);
1524 fd_recalibrate(cur_drv);
1525 fdctrl_reset_fifo(fdctrl);
1526 /* Raise Interrupt */
1527 fdctrl_raise_irq(fdctrl, 0x20);
1531 FLOPPY_DPRINTF("treat SEEK command\n");
1532 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1533 cur_drv = get_cur_drv(fdctrl);
1535 if (fdctrl->fifo[2] <= cur_drv->track)
1539 fdctrl_reset_fifo(fdctrl);
1540 if (fdctrl->fifo[2] > cur_drv->max_track) {
1541 fdctrl_raise_irq(fdctrl, 0x60);
1543 cur_drv->track = fdctrl->fifo[2];
1544 /* Raise Interrupt */
1545 fdctrl_raise_irq(fdctrl, 0x20);
1549 /* PERPENDICULAR_MODE */
1550 FLOPPY_DPRINTF("treat PERPENDICULAR_MODE command\n");
1551 if (fdctrl->fifo[1] & 0x80)
1552 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
1553 /* No result back */
1554 fdctrl_reset_fifo(fdctrl);
1558 FLOPPY_DPRINTF("treat CONFIGURE command\n");
1559 fdctrl->config = fdctrl->fifo[2];
1560 fdctrl->precomp_trk = fdctrl->fifo[3];
1561 /* No result back */
1562 fdctrl_reset_fifo(fdctrl);
1565 /* POWERDOWN_MODE */
1566 FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
1567 fdctrl->pwrd = fdctrl->fifo[1];
1568 fdctrl->fifo[0] = fdctrl->fifo[1];
1569 fdctrl_set_fifo(fdctrl, 1, 1);
1573 FLOPPY_DPRINTF("treat OPTION command\n");
1574 /* No result back */
1575 fdctrl_reset_fifo(fdctrl);
1579 // FLOPPY_DPRINTF("treat READ_TRACK command\n");
1580 FLOPPY_ERROR("treat READ_TRACK command\n");
1581 fdctrl_start_transfer(fdctrl, FD_DIR_READ);
1585 FLOPPY_DPRINTF("treat READ_ID command\n");
1586 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1590 FLOPPY_DPRINTF("treat RESTORE command\n");
1591 /* Drives position */
1592 drv0(fdctrl)->track = fdctrl->fifo[3];
1593 drv1(fdctrl)->track = fdctrl->fifo[4];
1595 fdctrl->timer0 = fdctrl->fifo[7];
1596 fdctrl->timer1 = fdctrl->fifo[8];
1597 cur_drv->last_sect = fdctrl->fifo[9];
1598 fdctrl->lock = fdctrl->fifo[10] >> 7;
1599 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1600 fdctrl->config = fdctrl->fifo[11];
1601 fdctrl->precomp_trk = fdctrl->fifo[12];
1602 fdctrl->pwrd = fdctrl->fifo[13];
1603 fdctrl_reset_fifo(fdctrl);
1607 FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
1608 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1609 cur_drv = get_cur_drv(fdctrl);
1610 fdctrl->data_state |= FD_STATE_FORMAT;
1611 if (fdctrl->fifo[0] & 0x80)
1612 fdctrl->data_state |= FD_STATE_MULTI;
1614 fdctrl->data_state &= ~FD_STATE_MULTI;
1615 fdctrl->data_state &= ~FD_STATE_SEEK;
1617 fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
1619 cur_drv->last_sect =
1620 cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
1621 fdctrl->fifo[3] / 2;
1623 cur_drv->last_sect = fdctrl->fifo[3];
1625 /* Bochs BIOS is buggy and don't send format informations
1626 * for each sector. So, pretend all's done right now...
1628 fdctrl->data_state &= ~FD_STATE_FORMAT;
1629 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1632 /* DRIVE_SPECIFICATION_COMMAND */
1633 FLOPPY_DPRINTF("treat DRIVE_SPECIFICATION_COMMAND command\n");
1634 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
1635 /* Command parameters done */
1636 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
1637 fdctrl->fifo[0] = fdctrl->fifo[1];
1638 fdctrl->fifo[2] = 0;
1639 fdctrl->fifo[3] = 0;
1640 fdctrl_set_fifo(fdctrl, 4, 1);
1642 fdctrl_reset_fifo(fdctrl);
1644 } else if (fdctrl->data_len > 7) {
1646 fdctrl->fifo[0] = 0x80 |
1647 (cur_drv->head << 2) | fdctrl->cur_drv;
1648 fdctrl_set_fifo(fdctrl, 1, 1);
1652 /* RELATIVE_SEEK_OUT */
1653 FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
1654 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1655 cur_drv = get_cur_drv(fdctrl);
1658 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
1659 cur_drv->track = cur_drv->max_track - 1;
1661 cur_drv->track += fdctrl->fifo[2];
1663 fdctrl_reset_fifo(fdctrl);
1664 fdctrl_raise_irq(fdctrl, 0x20);
1667 /* FORMAT_AND_WRITE */
1668 // FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
1669 FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
1670 fdctrl_unimplemented(fdctrl);
1673 /* RELATIVE_SEEK_IN */
1674 FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
1675 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1676 cur_drv = get_cur_drv(fdctrl);
1679 if (fdctrl->fifo[2] > cur_drv->track) {
1682 cur_drv->track -= fdctrl->fifo[2];
1684 fdctrl_reset_fifo(fdctrl);
1685 /* Raise Interrupt */
1686 fdctrl_raise_irq(fdctrl, 0x20);