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30#include "hw.h"
31#include "fdc.h"
32#include "qemu/error-report.h"
33#include "qemu/timer.h"
34#include "isa.h"
35#include "sysbus.h"
36#include "qdev-addr.h"
37#include "sysemu/blockdev.h"
38#include "sysemu/sysemu.h"
39#include "qemu/log.h"
40
41
42
43
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
54
55typedef enum FDriveRate {
56 FDRIVE_RATE_500K = 0x00,
57 FDRIVE_RATE_300K = 0x01,
58 FDRIVE_RATE_250K = 0x02,
59 FDRIVE_RATE_1M = 0x03,
60} FDriveRate;
61
62typedef 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
70static const FDFormat fd_formats[] = {
71
72
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
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
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
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
101 { FDRIVE_DRV_120, 9, 80, 1, FDRIVE_RATE_250K, },
102 { FDRIVE_DRV_120, 11, 80, 1, FDRIVE_RATE_250K, },
103
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
109 { FDRIVE_DRV_120, 8, 40, 1, FDRIVE_RATE_250K, },
110 { FDRIVE_DRV_120, 8, 40, 0, FDRIVE_RATE_250K, },
111
112 { FDRIVE_DRV_144, 9, 80, 0, FDRIVE_RATE_250K, },
113
114 { FDRIVE_DRV_NONE, -1, -1, 0, 0, },
115};
116
117static void pick_geometry(BlockDriverState *bs, 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 bdrv_get_geometry(bs, &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
166#define FD_SECTOR_LEN 512
167#define FD_SECTOR_SC 2
168#define FD_RESET_SENSEI_COUNT 4
169
170typedef struct FDCtrl FDCtrl;
171
172
173typedef enum FDiskFlags {
174 FDISK_DBL_SIDES = 0x01,
175} FDiskFlags;
176
177typedef struct FDrive {
178 FDCtrl *fdctrl;
179 BlockDriverState *bs;
180
181 FDriveType drive;
182 uint8_t perpendicular;
183
184 uint8_t head;
185 uint8_t track;
186 uint8_t sect;
187
188 FDiskFlags flags;
189 uint8_t last_sect;
190 uint8_t max_track;
191 uint16_t bps;
192 uint8_t ro;
193 uint8_t media_changed;
194 uint8_t media_rate;
195} FDrive;
196
197static void fd_init(FDrive *drv)
198{
199
200 drv->drive = FDRIVE_DRV_NONE;
201 drv->perpendicular = 0;
202
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
209static 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
216static 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
223
224
225
226
227
228
229static 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->bs != NULL && bdrv_is_inserted(drv->bs)) {
265 drv->media_changed = 0;
266 }
267 ret = 1;
268 }
269 drv->track = track;
270 drv->sect = sect;
271 }
272
273 if (drv->bs == NULL || !bdrv_is_inserted(drv->bs)) {
274 ret = 2;
275 }
276
277 return ret;
278}
279
280
281static void fd_recalibrate(FDrive *drv)
282{
283 FLOPPY_DPRINTF("recalibrate\n");
284 fd_seek(drv, 0, 0, 1, 1);
285}
286
287
288static 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->bs != NULL) {
296 ro = bdrv_is_read_only(drv->bs);
297 pick_geometry(drv->bs, &nb_heads, &max_track,
298 &last_sect, drv->drive, &drive, &rate);
299 if (!bdrv_is_inserted(drv->bs)) {
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
325
326static void fdctrl_reset(FDCtrl *fdctrl, int do_irq);
327static void fdctrl_reset_fifo(FDCtrl *fdctrl);
328static int fdctrl_transfer_handler (void *opaque, int nchan,
329 int dma_pos, int dma_len);
330static void fdctrl_raise_irq(FDCtrl *fdctrl);
331static FDrive *get_cur_drv(FDCtrl *fdctrl);
332
333static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl);
334static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl);
335static uint32_t fdctrl_read_dor(FDCtrl *fdctrl);
336static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value);
337static uint32_t fdctrl_read_tape(FDCtrl *fdctrl);
338static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value);
339static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl);
340static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value);
341static uint32_t fdctrl_read_data(FDCtrl *fdctrl);
342static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value);
343static uint32_t fdctrl_read_dir(FDCtrl *fdctrl);
344static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value);
345
346enum {
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
355enum {
356 FD_STATE_MULTI = 0x01,
357 FD_STATE_FORMAT = 0x02,
358};
359
360enum {
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
372enum {
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
405enum {
406 FD_CONFIG_PRETRK = 0xff,
407 FD_CONFIG_FIFOTHR = 0x0f,
408 FD_CONFIG_POLL = 0x10,
409 FD_CONFIG_EFIFO = 0x20,
410 FD_CONFIG_EIS = 0x40,
411};
412
413enum {
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
424enum {
425 FD_SR1_MA = 0x01,
426 FD_SR1_NW = 0x02,
427 FD_SR1_EC = 0x80,
428};
429
430enum {
431 FD_SR2_SNS = 0x04,
432 FD_SR2_SEH = 0x08,
433};
434
435enum {
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
446enum {
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
455enum {
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
469enum {
470#if MAX_FD == 4
471 FD_TDR_BOOTSEL = 0x0c,
472#else
473 FD_TDR_BOOTSEL = 0x04,
474#endif
475};
476
477enum {
478 FD_DSR_DRATEMASK= 0x03,
479 FD_DSR_PWRDOWN = 0x40,
480 FD_DSR_SWRESET = 0x80,
481};
482
483enum {
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
494enum {
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
501struct FDCtrl {
502 MemoryRegion iomem;
503 qemu_irq irq;
504
505 QEMUTimer *result_timer;
506 int dma_chann;
507
508 uint8_t version;
509
510 uint8_t sra;
511 uint8_t srb;
512 uint8_t dor;
513 uint8_t dor_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
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;
529
530
531 uint8_t precomp_trk;
532 uint8_t config;
533 uint8_t lock;
534
535 uint8_t pwrd;
536
537 uint8_t num_floppies;
538
539 int sun4m;
540 FDrive drives[MAX_FD];
541 int reset_sensei;
542 uint32_t check_media_rate;
543
544 uint8_t timer0;
545 uint8_t timer1;
546};
547
548typedef struct FDCtrlSysBus {
549 SysBusDevice busdev;
550 struct FDCtrl state;
551} FDCtrlSysBus;
552
553typedef struct FDCtrlISABus {
554 ISADevice busdev;
555 uint32_t iobase;
556 uint32_t irq;
557 uint32_t dma;
558 struct FDCtrl state;
559 int32_t bootindexA;
560 int32_t bootindexB;
561} FDCtrlISABus;
562
563static uint32_t fdctrl_read (void *opaque, uint32_t reg)
564{
565 FDCtrl *fdctrl = opaque;
566 uint32_t retval;
567
568 reg &= 7;
569 switch (reg) {
570 case FD_REG_SRA:
571 retval = fdctrl_read_statusA(fdctrl);
572 break;
573 case FD_REG_SRB:
574 retval = fdctrl_read_statusB(fdctrl);
575 break;
576 case FD_REG_DOR:
577 retval = fdctrl_read_dor(fdctrl);
578 break;
579 case FD_REG_TDR:
580 retval = fdctrl_read_tape(fdctrl);
581 break;
582 case FD_REG_MSR:
583 retval = fdctrl_read_main_status(fdctrl);
584 break;
585 case FD_REG_FIFO:
586 retval = fdctrl_read_data(fdctrl);
587 break;
588 case FD_REG_DIR:
589 retval = fdctrl_read_dir(fdctrl);
590 break;
591 default:
592 retval = (uint32_t)(-1);
593 break;
594 }
595 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
596
597 return retval;
598}
599
600static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
601{
602 FDCtrl *fdctrl = opaque;
603
604 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
605
606 reg &= 7;
607 switch (reg) {
608 case FD_REG_DOR:
609 fdctrl_write_dor(fdctrl, value);
610 break;
611 case FD_REG_TDR:
612 fdctrl_write_tape(fdctrl, value);
613 break;
614 case FD_REG_DSR:
615 fdctrl_write_rate(fdctrl, value);
616 break;
617 case FD_REG_FIFO:
618 fdctrl_write_data(fdctrl, value);
619 break;
620 case FD_REG_CCR:
621 fdctrl_write_ccr(fdctrl, value);
622 break;
623 default:
624 break;
625 }
626}
627
628static uint64_t fdctrl_read_mem (void *opaque, hwaddr reg,
629 unsigned ize)
630{
631 return fdctrl_read(opaque, (uint32_t)reg);
632}
633
634static void fdctrl_write_mem (void *opaque, hwaddr reg,
635 uint64_t value, unsigned size)
636{
637 fdctrl_write(opaque, (uint32_t)reg, value);
638}
639
640static const MemoryRegionOps fdctrl_mem_ops = {
641 .read = fdctrl_read_mem,
642 .write = fdctrl_write_mem,
643 .endianness = DEVICE_NATIVE_ENDIAN,
644};
645
646static const MemoryRegionOps fdctrl_mem_strict_ops = {
647 .read = fdctrl_read_mem,
648 .write = fdctrl_write_mem,
649 .endianness = DEVICE_NATIVE_ENDIAN,
650 .valid = {
651 .min_access_size = 1,
652 .max_access_size = 1,
653 },
654};
655
656static bool fdrive_media_changed_needed(void *opaque)
657{
658 FDrive *drive = opaque;
659
660 return (drive->bs != NULL && drive->media_changed != 1);
661}
662
663static const VMStateDescription vmstate_fdrive_media_changed = {
664 .name = "fdrive/media_changed",
665 .version_id = 1,
666 .minimum_version_id = 1,
667 .minimum_version_id_old = 1,
668 .fields = (VMStateField[]) {
669 VMSTATE_UINT8(media_changed, FDrive),
670 VMSTATE_END_OF_LIST()
671 }
672};
673
674static bool fdrive_media_rate_needed(void *opaque)
675{
676 FDrive *drive = opaque;
677
678 return drive->fdctrl->check_media_rate;
679}
680
681static const VMStateDescription vmstate_fdrive_media_rate = {
682 .name = "fdrive/media_rate",
683 .version_id = 1,
684 .minimum_version_id = 1,
685 .minimum_version_id_old = 1,
686 .fields = (VMStateField[]) {
687 VMSTATE_UINT8(media_rate, FDrive),
688 VMSTATE_END_OF_LIST()
689 }
690};
691
692static const VMStateDescription vmstate_fdrive = {
693 .name = "fdrive",
694 .version_id = 1,
695 .minimum_version_id = 1,
696 .minimum_version_id_old = 1,
697 .fields = (VMStateField[]) {
698 VMSTATE_UINT8(head, FDrive),
699 VMSTATE_UINT8(track, FDrive),
700 VMSTATE_UINT8(sect, FDrive),
701 VMSTATE_END_OF_LIST()
702 },
703 .subsections = (VMStateSubsection[]) {
704 {
705 .vmsd = &vmstate_fdrive_media_changed,
706 .needed = &fdrive_media_changed_needed,
707 } , {
708 .vmsd = &vmstate_fdrive_media_rate,
709 .needed = &fdrive_media_rate_needed,
710 } , {
711
712 }
713 }
714};
715
716static void fdc_pre_save(void *opaque)
717{
718 FDCtrl *s = opaque;
719
720 s->dor_vmstate = s->dor | GET_CUR_DRV(s);
721}
722
723static int fdc_post_load(void *opaque, int version_id)
724{
725 FDCtrl *s = opaque;
726
727 SET_CUR_DRV(s, s->dor_vmstate & FD_DOR_SELMASK);
728 s->dor = s->dor_vmstate & ~FD_DOR_SELMASK;
729 return 0;
730}
731
732static const VMStateDescription vmstate_fdc = {
733 .name = "fdc",
734 .version_id = 2,
735 .minimum_version_id = 2,
736 .minimum_version_id_old = 2,
737 .pre_save = fdc_pre_save,
738 .post_load = fdc_post_load,
739 .fields = (VMStateField []) {
740
741 VMSTATE_UINT8(sra, FDCtrl),
742 VMSTATE_UINT8(srb, FDCtrl),
743 VMSTATE_UINT8(dor_vmstate, FDCtrl),
744 VMSTATE_UINT8(tdr, FDCtrl),
745 VMSTATE_UINT8(dsr, FDCtrl),
746 VMSTATE_UINT8(msr, FDCtrl),
747 VMSTATE_UINT8(status0, FDCtrl),
748 VMSTATE_UINT8(status1, FDCtrl),
749 VMSTATE_UINT8(status2, FDCtrl),
750
751 VMSTATE_VARRAY_INT32(fifo, FDCtrl, fifo_size, 0, vmstate_info_uint8,
752 uint8_t),
753 VMSTATE_UINT32(data_pos, FDCtrl),
754 VMSTATE_UINT32(data_len, FDCtrl),
755 VMSTATE_UINT8(data_state, FDCtrl),
756 VMSTATE_UINT8(data_dir, FDCtrl),
757 VMSTATE_UINT8(eot, FDCtrl),
758
759 VMSTATE_UINT8(timer0, FDCtrl),
760 VMSTATE_UINT8(timer1, FDCtrl),
761 VMSTATE_UINT8(precomp_trk, FDCtrl),
762 VMSTATE_UINT8(config, FDCtrl),
763 VMSTATE_UINT8(lock, FDCtrl),
764 VMSTATE_UINT8(pwrd, FDCtrl),
765 VMSTATE_UINT8_EQUAL(num_floppies, FDCtrl),
766 VMSTATE_STRUCT_ARRAY(drives, FDCtrl, MAX_FD, 1,
767 vmstate_fdrive, FDrive),
768 VMSTATE_END_OF_LIST()
769 }
770};
771
772static void fdctrl_external_reset_sysbus(DeviceState *d)
773{
774 FDCtrlSysBus *sys = container_of(d, FDCtrlSysBus, busdev.qdev);
775 FDCtrl *s = &sys->state;
776
777 fdctrl_reset(s, 0);
778}
779
780static void fdctrl_external_reset_isa(DeviceState *d)
781{
782 FDCtrlISABus *isa = container_of(d, FDCtrlISABus, busdev.qdev);
783 FDCtrl *s = &isa->state;
784
785 fdctrl_reset(s, 0);
786}
787
788static void fdctrl_handle_tc(void *opaque, int irq, int level)
789{
790
791
792 if (level) {
793
794 FLOPPY_DPRINTF("TC pulsed\n");
795 }
796}
797
798
799static void fdctrl_reset_irq(FDCtrl *fdctrl)
800{
801 fdctrl->status0 = 0;
802 if (!(fdctrl->sra & FD_SRA_INTPEND))
803 return;
804 FLOPPY_DPRINTF("Reset interrupt\n");
805 qemu_set_irq(fdctrl->irq, 0);
806 fdctrl->sra &= ~FD_SRA_INTPEND;
807}
808
809static void fdctrl_raise_irq(FDCtrl *fdctrl)
810{
811
812 if (fdctrl->sun4m && (fdctrl->msr & FD_MSR_CMDBUSY)) {
813
814 fdctrl->msr &= ~FD_MSR_CMDBUSY;
815 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
816 return;
817 }
818 if (!(fdctrl->sra & FD_SRA_INTPEND)) {
819 qemu_set_irq(fdctrl->irq, 1);
820 fdctrl->sra |= FD_SRA_INTPEND;
821 }
822
823 fdctrl->reset_sensei = 0;
824 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
825}
826
827
828static void fdctrl_reset(FDCtrl *fdctrl, int do_irq)
829{
830 int i;
831
832 FLOPPY_DPRINTF("reset controller\n");
833 fdctrl_reset_irq(fdctrl);
834
835 fdctrl->sra = 0;
836 fdctrl->srb = 0xc0;
837 if (!fdctrl->drives[1].bs)
838 fdctrl->sra |= FD_SRA_nDRV2;
839 fdctrl->cur_drv = 0;
840 fdctrl->dor = FD_DOR_nRESET;
841 fdctrl->dor |= (fdctrl->dma_chann != -1) ? FD_DOR_DMAEN : 0;
842 fdctrl->msr = FD_MSR_RQM;
843
844 fdctrl->data_pos = 0;
845 fdctrl->data_len = 0;
846 fdctrl->data_state = 0;
847 fdctrl->data_dir = FD_DIR_WRITE;
848 for (i = 0; i < MAX_FD; i++)
849 fd_recalibrate(&fdctrl->drives[i]);
850 fdctrl_reset_fifo(fdctrl);
851 if (do_irq) {
852 fdctrl->status0 |= FD_SR0_RDYCHG;
853 fdctrl_raise_irq(fdctrl);
854 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
855 }
856}
857
858static inline FDrive *drv0(FDCtrl *fdctrl)
859{
860 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
861}
862
863static inline FDrive *drv1(FDCtrl *fdctrl)
864{
865 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
866 return &fdctrl->drives[1];
867 else
868 return &fdctrl->drives[0];
869}
870
871#if MAX_FD == 4
872static inline FDrive *drv2(FDCtrl *fdctrl)
873{
874 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
875 return &fdctrl->drives[2];
876 else
877 return &fdctrl->drives[1];
878}
879
880static inline FDrive *drv3(FDCtrl *fdctrl)
881{
882 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
883 return &fdctrl->drives[3];
884 else
885 return &fdctrl->drives[2];
886}
887#endif
888
889static FDrive *get_cur_drv(FDCtrl *fdctrl)
890{
891 switch (fdctrl->cur_drv) {
892 case 0: return drv0(fdctrl);
893 case 1: return drv1(fdctrl);
894#if MAX_FD == 4
895 case 2: return drv2(fdctrl);
896 case 3: return drv3(fdctrl);
897#endif
898 default: return NULL;
899 }
900}
901
902
903static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl)
904{
905 uint32_t retval = fdctrl->sra;
906
907 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
908
909 return retval;
910}
911
912
913static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl)
914{
915 uint32_t retval = fdctrl->srb;
916
917 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
918
919 return retval;
920}
921
922
923static uint32_t fdctrl_read_dor(FDCtrl *fdctrl)
924{
925 uint32_t retval = fdctrl->dor;
926
927
928 retval |= fdctrl->cur_drv;
929 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
930
931 return retval;
932}
933
934static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value)
935{
936 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
937
938
939 if (value & FD_DOR_MOTEN0)
940 fdctrl->srb |= FD_SRB_MTR0;
941 else
942 fdctrl->srb &= ~FD_SRB_MTR0;
943 if (value & FD_DOR_MOTEN1)
944 fdctrl->srb |= FD_SRB_MTR1;
945 else
946 fdctrl->srb &= ~FD_SRB_MTR1;
947
948
949 if (value & 1)
950 fdctrl->srb |= FD_SRB_DR0;
951 else
952 fdctrl->srb &= ~FD_SRB_DR0;
953
954
955 if (!(value & FD_DOR_nRESET)) {
956 if (fdctrl->dor & FD_DOR_nRESET) {
957 FLOPPY_DPRINTF("controller enter RESET state\n");
958 }
959 } else {
960 if (!(fdctrl->dor & FD_DOR_nRESET)) {
961 FLOPPY_DPRINTF("controller out of RESET state\n");
962 fdctrl_reset(fdctrl, 1);
963 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
964 }
965 }
966
967 fdctrl->cur_drv = value & FD_DOR_SELMASK;
968
969 fdctrl->dor = value;
970}
971
972
973static uint32_t fdctrl_read_tape(FDCtrl *fdctrl)
974{
975 uint32_t retval = fdctrl->tdr;
976
977 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
978
979 return retval;
980}
981
982static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value)
983{
984
985 if (!(fdctrl->dor & FD_DOR_nRESET)) {
986 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
987 return;
988 }
989 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
990
991 fdctrl->tdr = value & FD_TDR_BOOTSEL;
992
993}
994
995
996static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl)
997{
998 uint32_t retval = fdctrl->msr;
999
1000 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1001 fdctrl->dor |= FD_DOR_nRESET;
1002
1003
1004 if (fdctrl->sun4m) {
1005 retval |= FD_MSR_DIO;
1006 fdctrl_reset_irq(fdctrl);
1007 };
1008
1009 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
1010
1011 return retval;
1012}
1013
1014
1015static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value)
1016{
1017
1018 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1019 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1020 return;
1021 }
1022 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
1023
1024 if (value & FD_DSR_SWRESET) {
1025 fdctrl->dor &= ~FD_DOR_nRESET;
1026 fdctrl_reset(fdctrl, 1);
1027 fdctrl->dor |= FD_DOR_nRESET;
1028 }
1029 if (value & FD_DSR_PWRDOWN) {
1030 fdctrl_reset(fdctrl, 1);
1031 }
1032 fdctrl->dsr = value;
1033}
1034
1035
1036static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value)
1037{
1038
1039 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1040 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1041 return;
1042 }
1043 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
1044
1045
1046
1047
1048 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) |
1049 (value & FD_DSR_DRATEMASK);
1050}
1051
1052static int fdctrl_media_changed(FDrive *drv)
1053{
1054 return drv->media_changed;
1055}
1056
1057
1058static uint32_t fdctrl_read_dir(FDCtrl *fdctrl)
1059{
1060 uint32_t retval = 0;
1061
1062 if (fdctrl_media_changed(get_cur_drv(fdctrl))) {
1063 retval |= FD_DIR_DSKCHG;
1064 }
1065 if (retval != 0) {
1066 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1067 }
1068
1069 return retval;
1070}
1071
1072
1073static void fdctrl_reset_fifo(FDCtrl *fdctrl)
1074{
1075 fdctrl->data_dir = FD_DIR_WRITE;
1076 fdctrl->data_pos = 0;
1077 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
1078}
1079
1080
1081static void fdctrl_set_fifo(FDCtrl *fdctrl, int fifo_len)
1082{
1083 fdctrl->data_dir = FD_DIR_READ;
1084 fdctrl->data_len = fifo_len;
1085 fdctrl->data_pos = 0;
1086 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
1087}
1088
1089
1090static void fdctrl_unimplemented(FDCtrl *fdctrl, int direction)
1091{
1092 qemu_log_mask(LOG_UNIMP, "fdc: unimplemented command 0x%02x\n",
1093 fdctrl->fifo[0]);
1094 fdctrl->fifo[0] = FD_SR0_INVCMD;
1095 fdctrl_set_fifo(fdctrl, 1);
1096}
1097
1098
1099
1100
1101
1102static int fdctrl_seek_to_next_sect(FDCtrl *fdctrl, FDrive *cur_drv)
1103{
1104 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1105 cur_drv->head, cur_drv->track, cur_drv->sect,
1106 fd_sector(cur_drv));
1107
1108
1109 uint8_t new_head = cur_drv->head;
1110 uint8_t new_track = cur_drv->track;
1111 uint8_t new_sect = cur_drv->sect;
1112
1113 int ret = 1;
1114
1115 if (new_sect >= cur_drv->last_sect ||
1116 new_sect == fdctrl->eot) {
1117 new_sect = 1;
1118 if (FD_MULTI_TRACK(fdctrl->data_state)) {
1119 if (new_head == 0 &&
1120 (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1121 new_head = 1;
1122 } else {
1123 new_head = 0;
1124 new_track++;
1125 fdctrl->status0 |= FD_SR0_SEEK;
1126 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0) {
1127 ret = 0;
1128 }
1129 }
1130 } else {
1131 fdctrl->status0 |= FD_SR0_SEEK;
1132 new_track++;
1133 ret = 0;
1134 }
1135 if (ret == 1) {
1136 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1137 new_head, new_track, new_sect, fd_sector(cur_drv));
1138 }
1139 } else {
1140 new_sect++;
1141 }
1142 fd_seek(cur_drv, new_head, new_track, new_sect, 1);
1143 return ret;
1144}
1145
1146
1147static void fdctrl_stop_transfer(FDCtrl *fdctrl, uint8_t status0,
1148 uint8_t status1, uint8_t status2)
1149{
1150 FDrive *cur_drv;
1151 cur_drv = get_cur_drv(fdctrl);
1152
1153 fdctrl->status0 &= ~(FD_SR0_DS0 | FD_SR0_DS1 | FD_SR0_HEAD);
1154 fdctrl->status0 |= GET_CUR_DRV(fdctrl);
1155 if (cur_drv->head) {
1156 fdctrl->status0 |= FD_SR0_HEAD;
1157 }
1158 fdctrl->status0 |= status0;
1159
1160 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1161 status0, status1, status2, fdctrl->status0);
1162 fdctrl->fifo[0] = fdctrl->status0;
1163 fdctrl->fifo[1] = status1;
1164 fdctrl->fifo[2] = status2;
1165 fdctrl->fifo[3] = cur_drv->track;
1166 fdctrl->fifo[4] = cur_drv->head;
1167 fdctrl->fifo[5] = cur_drv->sect;
1168 fdctrl->fifo[6] = FD_SECTOR_SC;
1169 fdctrl->data_dir = FD_DIR_READ;
1170 if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1171 DMA_release_DREQ(fdctrl->dma_chann);
1172 }
1173 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
1174 fdctrl->msr &= ~FD_MSR_NONDMA;
1175
1176 fdctrl_set_fifo(fdctrl, 7);
1177 fdctrl_raise_irq(fdctrl);
1178}
1179
1180
1181static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
1182{
1183 FDrive *cur_drv;
1184 uint8_t kh, kt, ks;
1185
1186 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1187 cur_drv = get_cur_drv(fdctrl);
1188 kt = fdctrl->fifo[2];
1189 kh = fdctrl->fifo[3];
1190 ks = fdctrl->fifo[4];
1191 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1192 GET_CUR_DRV(fdctrl), kh, kt, ks,
1193 fd_sector_calc(kh, kt, ks, cur_drv->last_sect,
1194 NUM_SIDES(cur_drv)));
1195 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1196 case 2:
1197
1198 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1199 fdctrl->fifo[3] = kt;
1200 fdctrl->fifo[4] = kh;
1201 fdctrl->fifo[5] = ks;
1202 return;
1203 case 3:
1204
1205 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1206 fdctrl->fifo[3] = kt;
1207 fdctrl->fifo[4] = kh;
1208 fdctrl->fifo[5] = ks;
1209 return;
1210 case 4:
1211
1212 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1213 fdctrl->fifo[3] = kt;
1214 fdctrl->fifo[4] = kh;
1215 fdctrl->fifo[5] = ks;
1216 return;
1217 case 1:
1218 fdctrl->status0 |= FD_SR0_SEEK;
1219 break;
1220 default:
1221 break;
1222 }
1223
1224
1225
1226 if (fdctrl->check_media_rate &&
1227 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1228 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1229 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1230 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1231 fdctrl->fifo[3] = kt;
1232 fdctrl->fifo[4] = kh;
1233 fdctrl->fifo[5] = ks;
1234 return;
1235 }
1236
1237
1238 fdctrl->data_dir = direction;
1239 fdctrl->data_pos = 0;
1240 assert(fdctrl->msr & FD_MSR_CMDBUSY);
1241 if (fdctrl->fifo[0] & 0x80)
1242 fdctrl->data_state |= FD_STATE_MULTI;
1243 else
1244 fdctrl->data_state &= ~FD_STATE_MULTI;
1245 if (fdctrl->fifo[5] == 0) {
1246 fdctrl->data_len = fdctrl->fifo[8];
1247 } else {
1248 int tmp;
1249 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1250 tmp = (fdctrl->fifo[6] - ks + 1);
1251 if (fdctrl->fifo[0] & 0x80)
1252 tmp += fdctrl->fifo[6];
1253 fdctrl->data_len *= tmp;
1254 }
1255 fdctrl->eot = fdctrl->fifo[6];
1256 if (fdctrl->dor & FD_DOR_DMAEN) {
1257 int dma_mode;
1258
1259 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1260 dma_mode = (dma_mode >> 2) & 3;
1261 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1262 dma_mode, direction,
1263 (128 << fdctrl->fifo[5]) *
1264 (cur_drv->last_sect - ks + 1), fdctrl->data_len);
1265 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
1266 direction == FD_DIR_SCANH) && dma_mode == 0) ||
1267 (direction == FD_DIR_WRITE && dma_mode == 2) ||
1268 (direction == FD_DIR_READ && dma_mode == 1) ||
1269 (direction == FD_DIR_VERIFY)) {
1270
1271 fdctrl->msr &= ~FD_MSR_RQM;
1272 if (direction != FD_DIR_VERIFY) {
1273
1274
1275
1276 DMA_hold_DREQ(fdctrl->dma_chann);
1277 DMA_schedule(fdctrl->dma_chann);
1278 } else {
1279
1280 fdctrl_transfer_handler(fdctrl, fdctrl->dma_chann, 0,
1281 fdctrl->data_len);
1282 }
1283 return;
1284 } else {
1285 FLOPPY_DPRINTF("bad dma_mode=%d direction=%d\n", dma_mode,
1286 direction);
1287 }
1288 }
1289 FLOPPY_DPRINTF("start non-DMA transfer\n");
1290 fdctrl->msr |= FD_MSR_NONDMA;
1291 if (direction != FD_DIR_WRITE)
1292 fdctrl->msr |= FD_MSR_DIO;
1293
1294 fdctrl_raise_irq(fdctrl);
1295}
1296
1297
1298static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction)
1299{
1300 qemu_log_mask(LOG_UNIMP, "fdctrl_start_transfer_del() unimplemented\n");
1301
1302
1303
1304
1305 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1306}
1307
1308
1309static int fdctrl_transfer_handler (void *opaque, int nchan,
1310 int dma_pos, int dma_len)
1311{
1312 FDCtrl *fdctrl;
1313 FDrive *cur_drv;
1314 int len, start_pos, rel_pos;
1315 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1316
1317 fdctrl = opaque;
1318 if (fdctrl->msr & FD_MSR_RQM) {
1319 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1320 return 0;
1321 }
1322 cur_drv = get_cur_drv(fdctrl);
1323 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
1324 fdctrl->data_dir == FD_DIR_SCANH)
1325 status2 = FD_SR2_SNS;
1326 if (dma_len > fdctrl->data_len)
1327 dma_len = fdctrl->data_len;
1328 if (cur_drv->bs == NULL) {
1329 if (fdctrl->data_dir == FD_DIR_WRITE)
1330 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1331 else
1332 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1333 len = 0;
1334 goto transfer_error;
1335 }
1336 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1337 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
1338 len = dma_len - fdctrl->data_pos;
1339 if (len + rel_pos > FD_SECTOR_LEN)
1340 len = FD_SECTOR_LEN - rel_pos;
1341 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1342 "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
1343 fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1344 cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
1345 fd_sector(cur_drv) * FD_SECTOR_LEN);
1346 if (fdctrl->data_dir != FD_DIR_WRITE ||
1347 len < FD_SECTOR_LEN || rel_pos != 0) {
1348
1349 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
1350 fdctrl->fifo, 1) < 0) {
1351 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1352 fd_sector(cur_drv));
1353
1354 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1355 }
1356 }
1357 switch (fdctrl->data_dir) {
1358 case FD_DIR_READ:
1359
1360 DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
1361 fdctrl->data_pos, len);
1362 break;
1363 case FD_DIR_WRITE:
1364
1365 if (cur_drv->ro) {
1366
1367
1368
1369 fdctrl_stop_transfer(fdctrl,
1370 FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW,
1371 0x00);
1372 goto transfer_error;
1373 }
1374
1375 DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
1376 fdctrl->data_pos, len);
1377 if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
1378 fdctrl->fifo, 1) < 0) {
1379 FLOPPY_DPRINTF("error writing sector %d\n",
1380 fd_sector(cur_drv));
1381 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1382 goto transfer_error;
1383 }
1384 break;
1385 case FD_DIR_VERIFY:
1386
1387 break;
1388 default:
1389
1390 {
1391 uint8_t tmpbuf[FD_SECTOR_LEN];
1392 int ret;
1393 DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
1394 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1395 if (ret == 0) {
1396 status2 = FD_SR2_SEH;
1397 goto end_transfer;
1398 }
1399 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
1400 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1401 status2 = 0x00;
1402 goto end_transfer;
1403 }
1404 }
1405 break;
1406 }
1407 fdctrl->data_pos += len;
1408 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1409 if (rel_pos == 0) {
1410
1411 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1412 break;
1413 }
1414 }
1415 end_transfer:
1416 len = fdctrl->data_pos - start_pos;
1417 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1418 fdctrl->data_pos, len, fdctrl->data_len);
1419 if (fdctrl->data_dir == FD_DIR_SCANE ||
1420 fdctrl->data_dir == FD_DIR_SCANL ||
1421 fdctrl->data_dir == FD_DIR_SCANH)
1422 status2 = FD_SR2_SEH;
1423 fdctrl->data_len -= len;
1424 fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1425 transfer_error:
1426
1427 return len;
1428}
1429
1430
1431static uint32_t fdctrl_read_data(FDCtrl *fdctrl)
1432{
1433 FDrive *cur_drv;
1434 uint32_t retval = 0;
1435 int pos;
1436
1437 cur_drv = get_cur_drv(fdctrl);
1438 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1439 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
1440 FLOPPY_DPRINTF("error: controller not ready for reading\n");
1441 return 0;
1442 }
1443 pos = fdctrl->data_pos;
1444 if (fdctrl->msr & FD_MSR_NONDMA) {
1445 pos %= FD_SECTOR_LEN;
1446 if (pos == 0) {
1447 if (fdctrl->data_pos != 0)
1448 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1449 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1450 fd_sector(cur_drv));
1451 return 0;
1452 }
1453 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1454 FLOPPY_DPRINTF("error getting sector %d\n",
1455 fd_sector(cur_drv));
1456
1457 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1458 }
1459 }
1460 }
1461 retval = fdctrl->fifo[pos];
1462 if (++fdctrl->data_pos == fdctrl->data_len) {
1463 fdctrl->data_pos = 0;
1464
1465
1466
1467 if (fdctrl->msr & FD_MSR_NONDMA) {
1468 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1469 } else {
1470 fdctrl_reset_fifo(fdctrl);
1471 fdctrl_reset_irq(fdctrl);
1472 }
1473 }
1474 FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1475
1476 return retval;
1477}
1478
1479static void fdctrl_format_sector(FDCtrl *fdctrl)
1480{
1481 FDrive *cur_drv;
1482 uint8_t kh, kt, ks;
1483
1484 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1485 cur_drv = get_cur_drv(fdctrl);
1486 kt = fdctrl->fifo[6];
1487 kh = fdctrl->fifo[7];
1488 ks = fdctrl->fifo[8];
1489 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1490 GET_CUR_DRV(fdctrl), kh, kt, ks,
1491 fd_sector_calc(kh, kt, ks, cur_drv->last_sect,
1492 NUM_SIDES(cur_drv)));
1493 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1494 case 2:
1495
1496 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1497 fdctrl->fifo[3] = kt;
1498 fdctrl->fifo[4] = kh;
1499 fdctrl->fifo[5] = ks;
1500 return;
1501 case 3:
1502
1503 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1504 fdctrl->fifo[3] = kt;
1505 fdctrl->fifo[4] = kh;
1506 fdctrl->fifo[5] = ks;
1507 return;
1508 case 4:
1509
1510 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1511 fdctrl->fifo[3] = kt;
1512 fdctrl->fifo[4] = kh;
1513 fdctrl->fifo[5] = ks;
1514 return;
1515 case 1:
1516 fdctrl->status0 |= FD_SR0_SEEK;
1517 break;
1518 default:
1519 break;
1520 }
1521 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1522 if (cur_drv->bs == NULL ||
1523 bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1524 FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv));
1525 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1526 } else {
1527 if (cur_drv->sect == cur_drv->last_sect) {
1528 fdctrl->data_state &= ~FD_STATE_FORMAT;
1529
1530 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1531 } else {
1532
1533 fdctrl->data_pos = 0;
1534 fdctrl->data_len = 4;
1535 }
1536 }
1537}
1538
1539static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction)
1540{
1541 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1542 fdctrl->fifo[0] = fdctrl->lock << 4;
1543 fdctrl_set_fifo(fdctrl, 1);
1544}
1545
1546static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction)
1547{
1548 FDrive *cur_drv = get_cur_drv(fdctrl);
1549
1550
1551 fdctrl->fifo[0] = drv0(fdctrl)->track;
1552 fdctrl->fifo[1] = drv1(fdctrl)->track;
1553#if MAX_FD == 4
1554 fdctrl->fifo[2] = drv2(fdctrl)->track;
1555 fdctrl->fifo[3] = drv3(fdctrl)->track;
1556#else
1557 fdctrl->fifo[2] = 0;
1558 fdctrl->fifo[3] = 0;
1559#endif
1560
1561 fdctrl->fifo[4] = fdctrl->timer0;
1562 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1563 fdctrl->fifo[6] = cur_drv->last_sect;
1564 fdctrl->fifo[7] = (fdctrl->lock << 7) |
1565 (cur_drv->perpendicular << 2);
1566 fdctrl->fifo[8] = fdctrl->config;
1567 fdctrl->fifo[9] = fdctrl->precomp_trk;
1568 fdctrl_set_fifo(fdctrl, 10);
1569}
1570
1571static void fdctrl_handle_version(FDCtrl *fdctrl, int direction)
1572{
1573
1574 fdctrl->fifo[0] = fdctrl->version;
1575 fdctrl_set_fifo(fdctrl, 1);
1576}
1577
1578static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction)
1579{
1580 fdctrl->fifo[0] = 0x41;
1581 fdctrl_set_fifo(fdctrl, 1);
1582}
1583
1584static void fdctrl_handle_restore(FDCtrl *fdctrl, int direction)
1585{
1586 FDrive *cur_drv = get_cur_drv(fdctrl);
1587
1588
1589 drv0(fdctrl)->track = fdctrl->fifo[3];
1590 drv1(fdctrl)->track = fdctrl->fifo[4];
1591#if MAX_FD == 4
1592 drv2(fdctrl)->track = fdctrl->fifo[5];
1593 drv3(fdctrl)->track = fdctrl->fifo[6];
1594#endif
1595
1596 fdctrl->timer0 = fdctrl->fifo[7];
1597 fdctrl->timer1 = fdctrl->fifo[8];
1598 cur_drv->last_sect = fdctrl->fifo[9];
1599 fdctrl->lock = fdctrl->fifo[10] >> 7;
1600 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1601 fdctrl->config = fdctrl->fifo[11];
1602 fdctrl->precomp_trk = fdctrl->fifo[12];
1603 fdctrl->pwrd = fdctrl->fifo[13];
1604 fdctrl_reset_fifo(fdctrl);
1605}
1606
1607static void fdctrl_handle_save(FDCtrl *fdctrl, int direction)
1608{
1609 FDrive *cur_drv = get_cur_drv(fdctrl);
1610
1611 fdctrl->fifo[0] = 0;
1612 fdctrl->fifo[1] = 0;
1613
1614 fdctrl->fifo[2] = drv0(fdctrl)->track;
1615 fdctrl->fifo[3] = drv1(fdctrl)->track;
1616#if MAX_FD == 4
1617 fdctrl->fifo[4] = drv2(fdctrl)->track;
1618 fdctrl->fifo[5] = drv3(fdctrl)->track;
1619#else
1620 fdctrl->fifo[4] = 0;
1621 fdctrl->fifo[5] = 0;
1622#endif
1623
1624 fdctrl->fifo[6] = fdctrl->timer0;
1625 fdctrl->fifo[7] = fdctrl->timer1;
1626 fdctrl->fifo[8] = cur_drv->last_sect;
1627 fdctrl->fifo[9] = (fdctrl->lock << 7) |
1628 (cur_drv->perpendicular << 2);
1629 fdctrl->fifo[10] = fdctrl->config;
1630 fdctrl->fifo[11] = fdctrl->precomp_trk;
1631 fdctrl->fifo[12] = fdctrl->pwrd;
1632 fdctrl->fifo[13] = 0;
1633 fdctrl->fifo[14] = 0;
1634 fdctrl_set_fifo(fdctrl, 15);
1635}
1636
1637static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction)
1638{
1639 FDrive *cur_drv = get_cur_drv(fdctrl);
1640
1641 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1642 qemu_mod_timer(fdctrl->result_timer,
1643 qemu_get_clock_ns(vm_clock) + (get_ticks_per_sec() / 50));
1644}
1645
1646static void fdctrl_handle_format_track(FDCtrl *fdctrl, int direction)
1647{
1648 FDrive *cur_drv;
1649
1650 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1651 cur_drv = get_cur_drv(fdctrl);
1652 fdctrl->data_state |= FD_STATE_FORMAT;
1653 if (fdctrl->fifo[0] & 0x80)
1654 fdctrl->data_state |= FD_STATE_MULTI;
1655 else
1656 fdctrl->data_state &= ~FD_STATE_MULTI;
1657 cur_drv->bps =
1658 fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
1659#if 0
1660 cur_drv->last_sect =
1661 cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
1662 fdctrl->fifo[3] / 2;
1663#else
1664 cur_drv->last_sect = fdctrl->fifo[3];
1665#endif
1666
1667
1668
1669
1670 fdctrl->data_state &= ~FD_STATE_FORMAT;
1671 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1672}
1673
1674static void fdctrl_handle_specify(FDCtrl *fdctrl, int direction)
1675{
1676 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
1677 fdctrl->timer1 = fdctrl->fifo[2] >> 1;
1678 if (fdctrl->fifo[2] & 1)
1679 fdctrl->dor &= ~FD_DOR_DMAEN;
1680 else
1681 fdctrl->dor |= FD_DOR_DMAEN;
1682
1683 fdctrl_reset_fifo(fdctrl);
1684}
1685
1686static void fdctrl_handle_sense_drive_status(FDCtrl *fdctrl, int direction)
1687{
1688 FDrive *cur_drv;
1689
1690 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1691 cur_drv = get_cur_drv(fdctrl);
1692 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1693
1694 fdctrl->fifo[0] = (cur_drv->ro << 6) |
1695 (cur_drv->track == 0 ? 0x10 : 0x00) |
1696 (cur_drv->head << 2) |
1697 GET_CUR_DRV(fdctrl) |
1698 0x28;
1699 fdctrl_set_fifo(fdctrl, 1);
1700}
1701
1702static void fdctrl_handle_recalibrate(FDCtrl *fdctrl, int direction)
1703{
1704 FDrive *cur_drv;
1705
1706 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1707 cur_drv = get_cur_drv(fdctrl);
1708 fd_recalibrate(cur_drv);
1709 fdctrl_reset_fifo(fdctrl);
1710
1711 fdctrl->status0 |= FD_SR0_SEEK;
1712 fdctrl_raise_irq(fdctrl);
1713}
1714
1715static void fdctrl_handle_sense_interrupt_status(FDCtrl *fdctrl, int direction)
1716{
1717 FDrive *cur_drv = get_cur_drv(fdctrl);
1718
1719 if (fdctrl->reset_sensei > 0) {
1720 fdctrl->fifo[0] =
1721 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
1722 fdctrl->reset_sensei--;
1723 } else if (!(fdctrl->sra & FD_SRA_INTPEND)) {
1724 fdctrl->fifo[0] = FD_SR0_INVCMD;
1725 fdctrl_set_fifo(fdctrl, 1);
1726 return;
1727 } else {
1728 fdctrl->fifo[0] =
1729 (fdctrl->status0 & ~(FD_SR0_HEAD | FD_SR0_DS1 | FD_SR0_DS0))
1730 | GET_CUR_DRV(fdctrl);
1731 }
1732
1733 fdctrl->fifo[1] = cur_drv->track;
1734 fdctrl_set_fifo(fdctrl, 2);
1735 fdctrl_reset_irq(fdctrl);
1736 fdctrl->status0 = FD_SR0_RDYCHG;
1737}
1738
1739static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction)
1740{
1741 FDrive *cur_drv;
1742
1743 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1744 cur_drv = get_cur_drv(fdctrl);
1745 fdctrl_reset_fifo(fdctrl);
1746
1747
1748
1749 fd_seek(cur_drv, cur_drv->head, fdctrl->fifo[2], cur_drv->sect, 1);
1750
1751 fdctrl->status0 |= FD_SR0_SEEK;
1752 fdctrl_raise_irq(fdctrl);
1753}
1754
1755static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction)
1756{
1757 FDrive *cur_drv = get_cur_drv(fdctrl);
1758
1759 if (fdctrl->fifo[1] & 0x80)
1760 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
1761
1762 fdctrl_reset_fifo(fdctrl);
1763}
1764
1765static void fdctrl_handle_configure(FDCtrl *fdctrl, int direction)
1766{
1767 fdctrl->config = fdctrl->fifo[2];
1768 fdctrl->precomp_trk = fdctrl->fifo[3];
1769
1770 fdctrl_reset_fifo(fdctrl);
1771}
1772
1773static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction)
1774{
1775 fdctrl->pwrd = fdctrl->fifo[1];
1776 fdctrl->fifo[0] = fdctrl->fifo[1];
1777 fdctrl_set_fifo(fdctrl, 1);
1778}
1779
1780static void fdctrl_handle_option(FDCtrl *fdctrl, int direction)
1781{
1782
1783 fdctrl_reset_fifo(fdctrl);
1784}
1785
1786static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction)
1787{
1788 FDrive *cur_drv = get_cur_drv(fdctrl);
1789
1790 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
1791
1792 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
1793 fdctrl->fifo[0] = fdctrl->fifo[1];
1794 fdctrl->fifo[2] = 0;
1795 fdctrl->fifo[3] = 0;
1796 fdctrl_set_fifo(fdctrl, 4);
1797 } else {
1798 fdctrl_reset_fifo(fdctrl);
1799 }
1800 } else if (fdctrl->data_len > 7) {
1801
1802 fdctrl->fifo[0] = 0x80 |
1803 (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1804 fdctrl_set_fifo(fdctrl, 1);
1805 }
1806}
1807
1808static void fdctrl_handle_relative_seek_in(FDCtrl *fdctrl, int direction)
1809{
1810 FDrive *cur_drv;
1811
1812 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1813 cur_drv = get_cur_drv(fdctrl);
1814 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
1815 fd_seek(cur_drv, cur_drv->head, cur_drv->max_track - 1,
1816 cur_drv->sect, 1);
1817 } else {
1818 fd_seek(cur_drv, cur_drv->head,
1819 cur_drv->track + fdctrl->fifo[2], cur_drv->sect, 1);
1820 }
1821 fdctrl_reset_fifo(fdctrl);
1822
1823 fdctrl->status0 |= FD_SR0_SEEK;
1824 fdctrl_raise_irq(fdctrl);
1825}
1826
1827static void fdctrl_handle_relative_seek_out(FDCtrl *fdctrl, int direction)
1828{
1829 FDrive *cur_drv;
1830
1831 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1832 cur_drv = get_cur_drv(fdctrl);
1833 if (fdctrl->fifo[2] > cur_drv->track) {
1834 fd_seek(cur_drv, cur_drv->head, 0, cur_drv->sect, 1);
1835 } else {
1836 fd_seek(cur_drv, cur_drv->head,
1837 cur_drv->track - fdctrl->fifo[2], cur_drv->sect, 1);
1838 }
1839 fdctrl_reset_fifo(fdctrl);
1840
1841 fdctrl->status0 |= FD_SR0_SEEK;
1842 fdctrl_raise_irq(fdctrl);
1843}
1844
1845static const struct {
1846 uint8_t value;
1847 uint8_t mask;
1848 const char* name;
1849 int parameters;
1850 void (*handler)(FDCtrl *fdctrl, int direction);
1851 int direction;
1852} handlers[] = {
1853 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
1854 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
1855 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
1856 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
1857 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
1858 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
1859 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
1860 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore },
1861 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save },
1862 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
1863 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
1864 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_start_transfer, FD_DIR_VERIFY },
1865 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
1866 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
1867 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
1868 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
1869 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
1870 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
1871 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
1872 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
1873 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
1874 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
1875 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
1876 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
1877 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
1878 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
1879 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
1880 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
1881 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
1882 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
1883 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE },
1884 { 0, 0, "unknown", 0, fdctrl_unimplemented },
1885};
1886
1887static uint8_t command_to_handler[256];
1888
1889static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value)
1890{
1891 FDrive *cur_drv;
1892 int pos;
1893
1894
1895 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1896 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1897 return;
1898 }
1899 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
1900 FLOPPY_DPRINTF("error: controller not ready for writing\n");
1901 return;
1902 }
1903 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1904
1905 if (fdctrl->msr & FD_MSR_NONDMA) {
1906
1907 pos = fdctrl->data_pos++;
1908 pos %= FD_SECTOR_LEN;
1909 fdctrl->fifo[pos] = value;
1910 if (pos == FD_SECTOR_LEN - 1 ||
1911 fdctrl->data_pos == fdctrl->data_len) {
1912 cur_drv = get_cur_drv(fdctrl);
1913 if (bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1914 FLOPPY_DPRINTF("error writing sector %d\n",
1915 fd_sector(cur_drv));
1916 return;
1917 }
1918 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1919 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1920 fd_sector(cur_drv));
1921 return;
1922 }
1923 }
1924
1925
1926
1927 if (fdctrl->data_pos == fdctrl->data_len)
1928 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1929 return;
1930 }
1931 if (fdctrl->data_pos == 0) {
1932
1933 pos = command_to_handler[value & 0xff];
1934 FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
1935 fdctrl->data_len = handlers[pos].parameters + 1;
1936 fdctrl->msr |= FD_MSR_CMDBUSY;
1937 }
1938
1939 FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
1940 fdctrl->fifo[fdctrl->data_pos++] = value;
1941 if (fdctrl->data_pos == fdctrl->data_len) {
1942
1943
1944
1945 if (fdctrl->data_state & FD_STATE_FORMAT) {
1946 fdctrl_format_sector(fdctrl);
1947 return;
1948 }
1949
1950 pos = command_to_handler[fdctrl->fifo[0] & 0xff];
1951 FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
1952 (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
1953 }
1954}
1955
1956static void fdctrl_result_timer(void *opaque)
1957{
1958 FDCtrl *fdctrl = opaque;
1959 FDrive *cur_drv = get_cur_drv(fdctrl);
1960
1961
1962
1963
1964
1965 if (cur_drv->last_sect != 0) {
1966 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
1967 }
1968
1969 if (fdctrl->check_media_rate &&
1970 (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1971 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
1972 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1973 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1974 } else {
1975 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1976 }
1977}
1978
1979static void fdctrl_change_cb(void *opaque, bool load)
1980{
1981 FDrive *drive = opaque;
1982
1983 drive->media_changed = 1;
1984 fd_revalidate(drive);
1985}
1986
1987static const BlockDevOps fdctrl_block_ops = {
1988 .change_media_cb = fdctrl_change_cb,
1989};
1990
1991
1992static int fdctrl_connect_drives(FDCtrl *fdctrl)
1993{
1994 unsigned int i;
1995 FDrive *drive;
1996
1997 for (i = 0; i < MAX_FD; i++) {
1998 drive = &fdctrl->drives[i];
1999 drive->fdctrl = fdctrl;
2000
2001 if (drive->bs) {
2002 if (bdrv_get_on_error(drive->bs, 0) != BLOCKDEV_ON_ERROR_ENOSPC) {
2003 error_report("fdc doesn't support drive option werror");
2004 return -1;
2005 }
2006 if (bdrv_get_on_error(drive->bs, 1) != BLOCKDEV_ON_ERROR_REPORT) {
2007 error_report("fdc doesn't support drive option rerror");
2008 return -1;
2009 }
2010 }
2011
2012 fd_init(drive);
2013 fdctrl_change_cb(drive, 0);
2014 if (drive->bs) {
2015 bdrv_set_dev_ops(drive->bs, &fdctrl_block_ops, drive);
2016 }
2017 }
2018 return 0;
2019}
2020
2021ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds)
2022{
2023 ISADevice *dev;
2024
2025 dev = isa_try_create(bus, "isa-fdc");
2026 if (!dev) {
2027 return NULL;
2028 }
2029
2030 if (fds[0]) {
2031 qdev_prop_set_drive_nofail(&dev->qdev, "driveA", fds[0]->bdrv);
2032 }
2033 if (fds[1]) {
2034 qdev_prop_set_drive_nofail(&dev->qdev, "driveB", fds[1]->bdrv);
2035 }
2036 qdev_init_nofail(&dev->qdev);
2037
2038 return dev;
2039}
2040
2041void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
2042 hwaddr mmio_base, DriveInfo **fds)
2043{
2044 FDCtrl *fdctrl;
2045 DeviceState *dev;
2046 FDCtrlSysBus *sys;
2047
2048 dev = qdev_create(NULL, "sysbus-fdc");
2049 sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
2050 fdctrl = &sys->state;
2051 fdctrl->dma_chann = dma_chann;
2052 if (fds[0]) {
2053 qdev_prop_set_drive_nofail(dev, "driveA", fds[0]->bdrv);
2054 }
2055 if (fds[1]) {
2056 qdev_prop_set_drive_nofail(dev, "driveB", fds[1]->bdrv);
2057 }
2058 qdev_init_nofail(dev);
2059 sysbus_connect_irq(&sys->busdev, 0, irq);
2060 sysbus_mmio_map(&sys->busdev, 0, mmio_base);
2061}
2062
2063void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base,
2064 DriveInfo **fds, qemu_irq *fdc_tc)
2065{
2066 DeviceState *dev;
2067 FDCtrlSysBus *sys;
2068
2069 dev = qdev_create(NULL, "SUNW,fdtwo");
2070 if (fds[0]) {
2071 qdev_prop_set_drive_nofail(dev, "drive", fds[0]->bdrv);
2072 }
2073 qdev_init_nofail(dev);
2074 sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
2075 sysbus_connect_irq(&sys->busdev, 0, irq);
2076 sysbus_mmio_map(&sys->busdev, 0, io_base);
2077 *fdc_tc = qdev_get_gpio_in(dev, 0);
2078}
2079
2080static int fdctrl_init_common(FDCtrl *fdctrl)
2081{
2082 int i, j;
2083 static int command_tables_inited = 0;
2084
2085
2086 if (!command_tables_inited) {
2087 command_tables_inited = 1;
2088 for (i = ARRAY_SIZE(handlers) - 1; i >= 0; i--) {
2089 for (j = 0; j < sizeof(command_to_handler); j++) {
2090 if ((j & handlers[i].mask) == handlers[i].value) {
2091 command_to_handler[j] = i;
2092 }
2093 }
2094 }
2095 }
2096
2097 FLOPPY_DPRINTF("init controller\n");
2098 fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
2099 fdctrl->fifo_size = 512;
2100 fdctrl->result_timer = qemu_new_timer_ns(vm_clock,
2101 fdctrl_result_timer, fdctrl);
2102
2103 fdctrl->version = 0x90;
2104 fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO;
2105 fdctrl->num_floppies = MAX_FD;
2106
2107 if (fdctrl->dma_chann != -1)
2108 DMA_register_channel(fdctrl->dma_chann, &fdctrl_transfer_handler, fdctrl);
2109 return fdctrl_connect_drives(fdctrl);
2110}
2111
2112static const MemoryRegionPortio fdc_portio_list[] = {
2113 { 1, 5, 1, .read = fdctrl_read, .write = fdctrl_write },
2114 { 7, 1, 1, .read = fdctrl_read, .write = fdctrl_write },
2115 PORTIO_END_OF_LIST(),
2116};
2117
2118static int isabus_fdc_init1(ISADevice *dev)
2119{
2120 FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, dev);
2121 FDCtrl *fdctrl = &isa->state;
2122 int ret;
2123
2124 isa_register_portio_list(dev, isa->iobase, fdc_portio_list, fdctrl, "fdc");
2125
2126 isa_init_irq(&isa->busdev, &fdctrl->irq, isa->irq);
2127 fdctrl->dma_chann = isa->dma;
2128
2129 qdev_set_legacy_instance_id(&dev->qdev, isa->iobase, 2);
2130 ret = fdctrl_init_common(fdctrl);
2131
2132 add_boot_device_path(isa->bootindexA, &dev->qdev, "/floppy@0");
2133 add_boot_device_path(isa->bootindexB, &dev->qdev, "/floppy@1");
2134
2135 return ret;
2136}
2137
2138static int sysbus_fdc_init1(SysBusDevice *dev)
2139{
2140 FDCtrlSysBus *sys = DO_UPCAST(FDCtrlSysBus, busdev, dev);
2141 FDCtrl *fdctrl = &sys->state;
2142 int ret;
2143
2144 memory_region_init_io(&fdctrl->iomem, &fdctrl_mem_ops, fdctrl, "fdc", 0x08);
2145 sysbus_init_mmio(dev, &fdctrl->iomem);
2146 sysbus_init_irq(dev, &fdctrl->irq);
2147 qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
2148 fdctrl->dma_chann = -1;
2149
2150 qdev_set_legacy_instance_id(&dev->qdev, 0 , 2);
2151 ret = fdctrl_init_common(fdctrl);
2152
2153 return ret;
2154}
2155
2156static int sun4m_fdc_init1(SysBusDevice *dev)
2157{
2158 FDCtrl *fdctrl = &(FROM_SYSBUS(FDCtrlSysBus, dev)->state);
2159
2160 memory_region_init_io(&fdctrl->iomem, &fdctrl_mem_strict_ops, fdctrl,
2161 "fdctrl", 0x08);
2162 sysbus_init_mmio(dev, &fdctrl->iomem);
2163 sysbus_init_irq(dev, &fdctrl->irq);
2164 qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
2165
2166 fdctrl->sun4m = 1;
2167 qdev_set_legacy_instance_id(&dev->qdev, 0 , 2);
2168 return fdctrl_init_common(fdctrl);
2169}
2170
2171FDriveType isa_fdc_get_drive_type(ISADevice *fdc, int i)
2172{
2173 FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, fdc);
2174
2175 return isa->state.drives[i].drive;
2176}
2177
2178static const VMStateDescription vmstate_isa_fdc ={
2179 .name = "fdc",
2180 .version_id = 2,
2181 .minimum_version_id = 2,
2182 .fields = (VMStateField []) {
2183 VMSTATE_STRUCT(state, FDCtrlISABus, 0, vmstate_fdc, FDCtrl),
2184 VMSTATE_END_OF_LIST()
2185 }
2186};
2187
2188static Property isa_fdc_properties[] = {
2189 DEFINE_PROP_HEX32("iobase", FDCtrlISABus, iobase, 0x3f0),
2190 DEFINE_PROP_UINT32("irq", FDCtrlISABus, irq, 6),
2191 DEFINE_PROP_UINT32("dma", FDCtrlISABus, dma, 2),
2192 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].bs),
2193 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].bs),
2194 DEFINE_PROP_INT32("bootindexA", FDCtrlISABus, bootindexA, -1),
2195 DEFINE_PROP_INT32("bootindexB", FDCtrlISABus, bootindexB, -1),
2196 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus, state.check_media_rate,
2197 0, true),
2198 DEFINE_PROP_END_OF_LIST(),
2199};
2200
2201static void isabus_fdc_class_init1(ObjectClass *klass, void *data)
2202{
2203 DeviceClass *dc = DEVICE_CLASS(klass);
2204 ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
2205 ic->init = isabus_fdc_init1;
2206 dc->fw_name = "fdc";
2207 dc->no_user = 1;
2208 dc->reset = fdctrl_external_reset_isa;
2209 dc->vmsd = &vmstate_isa_fdc;
2210 dc->props = isa_fdc_properties;
2211}
2212
2213static const TypeInfo isa_fdc_info = {
2214 .name = "isa-fdc",
2215 .parent = TYPE_ISA_DEVICE,
2216 .instance_size = sizeof(FDCtrlISABus),
2217 .class_init = isabus_fdc_class_init1,
2218};
2219
2220static const VMStateDescription vmstate_sysbus_fdc ={
2221 .name = "fdc",
2222 .version_id = 2,
2223 .minimum_version_id = 2,
2224 .fields = (VMStateField []) {
2225 VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl),
2226 VMSTATE_END_OF_LIST()
2227 }
2228};
2229
2230static Property sysbus_fdc_properties[] = {
2231 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].bs),
2232 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].bs),
2233 DEFINE_PROP_END_OF_LIST(),
2234};
2235
2236static void sysbus_fdc_class_init(ObjectClass *klass, void *data)
2237{
2238 DeviceClass *dc = DEVICE_CLASS(klass);
2239 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
2240
2241 k->init = sysbus_fdc_init1;
2242 dc->reset = fdctrl_external_reset_sysbus;
2243 dc->vmsd = &vmstate_sysbus_fdc;
2244 dc->props = sysbus_fdc_properties;
2245}
2246
2247static const TypeInfo sysbus_fdc_info = {
2248 .name = "sysbus-fdc",
2249 .parent = TYPE_SYS_BUS_DEVICE,
2250 .instance_size = sizeof(FDCtrlSysBus),
2251 .class_init = sysbus_fdc_class_init,
2252};
2253
2254static Property sun4m_fdc_properties[] = {
2255 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].bs),
2256 DEFINE_PROP_END_OF_LIST(),
2257};
2258
2259static void sun4m_fdc_class_init(ObjectClass *klass, void *data)
2260{
2261 DeviceClass *dc = DEVICE_CLASS(klass);
2262 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
2263
2264 k->init = sun4m_fdc_init1;
2265 dc->reset = fdctrl_external_reset_sysbus;
2266 dc->vmsd = &vmstate_sysbus_fdc;
2267 dc->props = sun4m_fdc_properties;
2268}
2269
2270static const TypeInfo sun4m_fdc_info = {
2271 .name = "SUNW,fdtwo",
2272 .parent = TYPE_SYS_BUS_DEVICE,
2273 .instance_size = sizeof(FDCtrlSysBus),
2274 .class_init = sun4m_fdc_class_init,
2275};
2276
2277static void fdc_register_types(void)
2278{
2279 type_register_static(&isa_fdc_info);
2280 type_register_static(&sysbus_fdc_info);
2281 type_register_static(&sun4m_fdc_info);
2282}
2283
2284type_init(fdc_register_types)
2285
