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8977f3c1
FB		 1/*
2 * QEMU Floppy disk emulator
3 *
4 * Copyright (c) 2003 Jocelyn Mayer
5 *
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:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
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
22 * THE SOFTWARE.
23 */
8977f3c1
FB		 24#include "vl.h"
25
26/********************************************************/
27/* debug Floppy devices */
28//#define DEBUG_FLOPPY
29
30#ifdef DEBUG_FLOPPY
31#define FLOPPY_DPRINTF(fmt, args...) \
32do { printf("FLOPPY: " fmt , ##args); } while (0)
33#else
34#define FLOPPY_DPRINTF(fmt, args...)
35#endif
36
37#define FLOPPY_ERROR(fmt, args...) \
38do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
39
40/********************************************************/
41/* Floppy drive emulation */
42
43/* Will always be a fixed parameter for us */
44#define FD_SECTOR_LEN 512
45#define FD_SECTOR_SC 2 /* Sector size code */
46
47/* Floppy disk drive emulation */
48typedef 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 */
baca51fa
FB		 52 FDRIVE_DISK_USER = 0x04, /* User defined geometry */
53 FDRIVE_DISK_NONE = 0x05, /* No disk */
8977f3c1
FB		 54} fdisk_type_t;
55
56typedef 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 */
61} fdrive_type_t;
62
baca51fa
FB		 63typedef enum fdrive_flags_t {
64 FDRIVE_MOTOR_ON = 0x01, /* motor on/off */
65 FDRIVE_REVALIDATE = 0x02, /* Revalidated */
66} fdrive_flags_t;
67
68typedef enum fdisk_flags_t {
69 FDISK_DBL_SIDES = 0x01,
70} fdisk_flags_t;
71
8977f3c1
FB		 72typedef struct fdrive_t {
73 BlockDriverState *bs;
74 /* Drive status */
75 fdrive_type_t drive;
baca51fa 76 fdrive_flags_t drflags;
8977f3c1 77 uint8_t perpendicular; /* 2.88 MB access mode */
8977f3c1
FB		 78 /* Position */
79 uint8_t head;
80 uint8_t track;
81 uint8_t sect;
82 /* Last operation status */
83 uint8_t dir; /* Direction */
84 uint8_t rw; /* Read/write */
85 /* Media */
baca51fa 86 fdisk_flags_t flags;
8977f3c1
FB		 87 uint8_t last_sect; /* Nb sector per track */
88 uint8_t max_track; /* Nb of tracks */
baca51fa 89 uint16_t bps; /* Bytes per sector */
8977f3c1
FB		 90 uint8_t ro; /* Is read-only */
91} fdrive_t;
92
caed8802 93static void fd_init (fdrive_t *drv, BlockDriverState *bs)
8977f3c1
FB		 94{
95 /* Drive */
caed8802
FB		 96 drv->bs = bs;
97 if (bs)
98 drv->drive = FDRIVE_DRV_144;
99 else
100 drv->drive = FDRIVE_DRV_NONE;
baca51fa 101 drv->drflags = 0;
8977f3c1 102 drv->perpendicular = 0;
8977f3c1 103 /* Disk */
baca51fa 104 drv->last_sect = 0;
8977f3c1
FB		 105 drv->max_track = 0;
106}
107
108static int _fd_sector (uint8_t head, uint8_t track,
109 uint8_t sect, uint8_t last_sect)
110{
111 return (((track * 2) + head) * last_sect) + sect - 1;
112}
113
114/* Returns current position, in sectors, for given drive */
115static int fd_sector (fdrive_t *drv)
116{
117 return _fd_sector(drv->head, drv->track, drv->sect, drv->last_sect);
118}
119
120static int fd_seek (fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect,
121 int enable_seek)
122{
123 uint32_t sector;
baca51fa
FB		 124 int ret;
125
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);
8977f3c1
FB		 132 return 2;
133 }
134 if (sect > drv->last_sect) {
baca51fa
FB		 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);
8977f3c1
FB		 139 return 3;
140 }
141 sector = _fd_sector(head, track, sect, drv->last_sect);
baca51fa 142 ret = 0;
8977f3c1
FB		 143 if (sector != fd_sector(drv)) {
144#if 0
145 if (!enable_seek) {
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);
148 return 4;
149 }
150#endif
151 drv->head = head;
baca51fa
FB		 152 if (drv->track != track)
153 ret = 1;
8977f3c1
FB		 154 drv->track = track;
155 drv->sect = sect;
8977f3c1
FB		 156 }
157
baca51fa 158 return ret;
8977f3c1
FB		 159}
160
161/* Set drive back to track 0 */
162static void fd_recalibrate (fdrive_t *drv)
163{
164 FLOPPY_DPRINTF("recalibrate\n");
165 drv->head = 0;
166 drv->track = 0;
167 drv->sect = 1;
168 drv->dir = 1;
169 drv->rw = 0;
170}
171
a541f297
FB		 172/* Recognize floppy formats */
173typedef struct fd_format_t {
174 fdrive_type_t drive;
175 fdisk_type_t disk;
176 uint8_t last_sect;
177 uint8_t max_track;
178 uint8_t max_head;
179 const unsigned char *str;
180} fd_format_t;
181
182static 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", },
225 /* end */
226 { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, -1, -1, 0, NULL, },
227};
228
8977f3c1 229/* Revalidate a disk drive after a disk change */
caed8802 230static void fd_revalidate (fdrive_t *drv)
8977f3c1 231{
a541f297
FB		 232 fd_format_t *parse;
233 int64_t nb_sectors, size;
234 int i, first_match, match;
baca51fa 235 int nb_heads, max_track, last_sect, ro;
8977f3c1
FB		 236
237 FLOPPY_DPRINTF("revalidate\n");
baca51fa 238 drv->drflags &= ~FDRIVE_REVALIDATE;
a541f297 239 if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
baca51fa 240 ro = bdrv_is_read_only(drv->bs);
a541f297 241 bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
baca51fa 242 if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
baca51fa
FB		 243 printf("User defined disk (%d %d %d)",
244 nb_heads - 1, max_track, last_sect);
a541f297
FB		 245 } else {
246 bdrv_get_geometry(drv->bs, &nb_sectors);
247 match = -1;
248 first_match = -1;
249 for (i = 0;; i++) {
250 parse = &fd_formats[i];
251 if (parse->drive == FDRIVE_DRV_NONE)
252 break;
253 if (drv->drive == parse->drive ||
254 drv->drive == FDRIVE_DRV_NONE) {
255 size = (parse->max_head + 1) * parse->max_track *
256 parse->last_sect;
257 if (nb_sectors == size) {
258 match = i;
259 break;
260 }
261 if (first_match == -1)
262 first_match = i;
263 }
264 }
265 if (match == -1) {
266 if (first_match == -1)
267 match = 1;
268 else
269 match = first_match;
270 parse = &fd_formats[match];
271 }
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");
278 }
baca51fa
FB		 279 if (nb_heads == 1) {
280 drv->flags &= ~FDISK_DBL_SIDES;
281 } else {
282 drv->flags |= FDISK_DBL_SIDES;
283 }
284 drv->max_track = max_track;
285 drv->last_sect = last_sect;
baca51fa 286 drv->ro = ro;
8977f3c1 287 } else {
baca51fa 288 printf("No disk in drive\n");
baca51fa
FB		 289 drv->last_sect = 0;
290 drv->max_track = 0;
291 drv->flags &= ~FDISK_DBL_SIDES;
8977f3c1 292 }
baca51fa 293 drv->drflags |= FDRIVE_REVALIDATE;
caed8802
FB		 294}
295
8977f3c1
FB		 296/* Motor control */
297static void fd_start (fdrive_t *drv)
298{
baca51fa 299 drv->drflags |= FDRIVE_MOTOR_ON;
8977f3c1
FB		 300}
301
302static void fd_stop (fdrive_t *drv)
303{
baca51fa 304 drv->drflags &= ~FDRIVE_MOTOR_ON;
8977f3c1
FB		 305}
306
307/* Re-initialise a drives (motor off, repositioned) */
308static void fd_reset (fdrive_t *drv)
309{
310 fd_stop(drv);
311 fd_recalibrate(drv);
312}
313
314/********************************************************/
315/* Intel 82078 floppy disk controler emulation */
316
baca51fa
FB		 317static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq);
318static void fdctrl_reset_fifo (fdctrl_t *fdctrl);
f9e92e97 319static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size);
baca51fa
FB		 320static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status);
321
322static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl);
323static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl);
324static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value);
325static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl);
326static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value);
327static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl);
328static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value);
329static uint32_t fdctrl_read_data (fdctrl_t *fdctrl);
330static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value);
331static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl);
8977f3c1
FB		 332
333enum {
334 FD_CTRL_ACTIVE = 0x01,
335 FD_CTRL_RESET = 0x02,
336 FD_CTRL_SLEEP = 0x04,
337 FD_CTRL_BUSY = 0x08,
338 FD_CTRL_INTR = 0x10,
339};
340
341enum {
342 FD_DIR_WRITE = 0,
343 FD_DIR_READ = 1,
344 FD_DIR_SCANE = 2,
345 FD_DIR_SCANL = 3,
346 FD_DIR_SCANH = 4,
347};
348
349enum {
350 FD_STATE_CMD = 0x00,
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,
baca51fa 356 FD_STATE_FORMAT = 0x40,
8977f3c1
FB		 357};
358
359#define FD_STATE(state) ((state) & FD_STATE_STATE)
baca51fa
FB		 360#define FD_SET_STATE(state, new_state) \
361do { (state) = ((state) & ~FD_STATE_STATE) | (new_state); } while (0)
8977f3c1
FB		 362#define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
363#define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
baca51fa 364#define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
8977f3c1 365
baca51fa
FB		 366struct fdctrl_t {
367 fdctrl_t *fdctrl;
8977f3c1
FB		 368 /* Controler's identification */
369 uint8_t version;
370 /* HW */
371 int irq_lvl;
372 int dma_chann;
baca51fa 373 uint32_t io_base;
8977f3c1
FB		 374 /* Controler state */
375 uint8_t state;
376 uint8_t dma_en;
377 uint8_t cur_drv;
378 uint8_t bootsel;
379 /* Command FIFO */
380 uint8_t fifo[FD_SECTOR_LEN];
381 uint32_t data_pos;
382 uint32_t data_len;
383 uint8_t data_state;
384 uint8_t data_dir;
385 uint8_t int_status;
386 /* States kept only to be returned back */
387 /* Timers state */
388 uint8_t timer0;
389 uint8_t timer1;
390 /* precompensation */
391 uint8_t precomp_trk;
392 uint8_t config;
393 uint8_t lock;
394 /* Power down config (also with status regB access mode */
395 uint8_t pwrd;
396 /* Floppy drives */
397 fdrive_t drives[2];
baca51fa
FB		 398};
399
400static uint32_t fdctrl_read (void *opaque, uint32_t reg)
401{
402 fdctrl_t *fdctrl = opaque;
403 uint32_t retval;
404
a541f297
FB		 405 switch (reg & 0x07) {
406 case 0x01:
baca51fa 407 retval = fdctrl_read_statusB(fdctrl);
a541f297
FB		 408 break;
409 case 0x02:
baca51fa 410 retval = fdctrl_read_dor(fdctrl);
a541f297
FB		 411 break;
412 case 0x03:
baca51fa 413 retval = fdctrl_read_tape(fdctrl);
a541f297
FB		 414 break;
415 case 0x04:
baca51fa 416 retval = fdctrl_read_main_status(fdctrl);
a541f297
FB		 417 break;
418 case 0x05:
baca51fa 419 retval = fdctrl_read_data(fdctrl);
a541f297
FB		 420 break;
421 case 0x07:
baca51fa 422 retval = fdctrl_read_dir(fdctrl);
a541f297
FB		 423 break;
424 default:
baca51fa 425 retval = (uint32_t)(-1);
a541f297
FB		 426 break;
427 }
baca51fa
FB		 428
429 return retval;
430}
431
432static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
433{
434 fdctrl_t *fdctrl = opaque;
435
a541f297
FB		 436 switch (reg & 0x07) {
437 case 0x02:
baca51fa 438 fdctrl_write_dor(fdctrl, value);
a541f297
FB		 439 break;
440 case 0x03:
baca51fa 441 fdctrl_write_tape(fdctrl, value);
a541f297
FB		 442 break;
443 case 0x04:
baca51fa 444 fdctrl_write_rate(fdctrl, value);
a541f297
FB		 445 break;
446 case 0x05:
baca51fa 447 fdctrl_write_data(fdctrl, value);
a541f297
FB		 448 break;
449 default:
450 break;
451 }
baca51fa
FB		 452}
453
454static void fd_change_cb (void *opaque)
455{
456 fdrive_t *drv = opaque;
8977f3c1 457
baca51fa 458 FLOPPY_DPRINTF("disk change\n");
baca51fa
FB		 459 fd_revalidate(drv);
460#if 0
461 fd_recalibrate(drv);
462 fdctrl_reset_fifo(drv->fdctrl);
463 fdctrl_raise_irq(drv->fdctrl, 0x20);
464#endif
465}
8977f3c1 466
baca51fa
FB		 467fdctrl_t *fdctrl_init (int irq_lvl, int dma_chann, int mem_mapped,
468 uint32_t io_base,
469 BlockDriverState **fds)
8977f3c1 470{
baca51fa 471 fdctrl_t *fdctrl;
8977f3c1
FB		 472// int io_mem;
473 int i;
474
475 FLOPPY_DPRINTF("init controler\n");
baca51fa
FB		 476 fdctrl = qemu_mallocz(sizeof(fdctrl_t));
477 if (!fdctrl)
478 return NULL;
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;
a541f297 483 fdctrl->config = 0x60; /* Implicit seek, polling & FIFO enabled */
baca51fa
FB		 484 if (fdctrl->dma_chann != -1) {
485 fdctrl->dma_en = 1;
486 DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl);
8977f3c1 487 } else {
baca51fa 488 fdctrl->dma_en = 0;
8977f3c1 489 }
baca51fa
FB		 490 for (i = 0; i < 2; i++) {
491 fd_init(&fdctrl->drives[i], fds[i]);
492 if (fds[i]) {
493 bdrv_set_change_cb(fds[i],
494 &fd_change_cb, &fdctrl->drives[i]);
495 }
caed8802 496 }
baca51fa
FB		 497 fdctrl_reset(fdctrl, 0);
498 fdctrl->state = FD_CTRL_ACTIVE;
8977f3c1
FB		 499 if (mem_mapped) {
500 FLOPPY_ERROR("memory mapped floppy not supported by now !\n");
501#if 0
502 io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write);
503 cpu_register_physical_memory(base, 0x08, io_mem);
504#endif
505 } else {
baca51fa
FB		 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);
8977f3c1 510 }
a541f297 511 for (i = 0; i < 2; i++) {
baca51fa 512 fd_revalidate(&fdctrl->drives[i]);
8977f3c1 513 }
a541f297 514
baca51fa 515 return fdctrl;
caed8802 516}
8977f3c1 517
baca51fa
FB		 518/* XXX: may change if moved to bdrv */
519int fdctrl_get_drive_type(fdctrl_t *fdctrl, int drive_num)
caed8802 520{
baca51fa 521 return fdctrl->drives[drive_num].drive;
8977f3c1
FB		 522}
523
524/* Change IRQ state */
baca51fa 525static void fdctrl_reset_irq (fdctrl_t *fdctrl)
8977f3c1 526{
baca51fa
FB		 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);
8977f3c1
FB		 530 }
531}
532
baca51fa 533static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status)
8977f3c1 534{
baca51fa
FB		 535 if (~(fdctrl->state & FD_CTRL_INTR)) {
536 pic_set_irq(fdctrl->irq_lvl, 1);
537 fdctrl->state |= FD_CTRL_INTR;
8977f3c1
FB		 538 }
539 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", status);
baca51fa 540 fdctrl->int_status = status;
8977f3c1
FB		 541}
542
543/* Reset controler */
baca51fa 544static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq)
8977f3c1
FB		 545{
546 int i;
547
548 FLOPPY_DPRINTF("reset controler\n");
baca51fa 549 fdctrl_reset_irq(fdctrl);
8977f3c1 550 /* Initialise controler */
baca51fa 551 fdctrl->cur_drv = 0;
8977f3c1 552 /* FIFO state */
baca51fa
FB		 553 fdctrl->data_pos = 0;
554 fdctrl->data_len = 0;
555 fdctrl->data_state = FD_STATE_CMD;
556 fdctrl->data_dir = FD_DIR_WRITE;
8977f3c1 557 for (i = 0; i < MAX_FD; i++)
baca51fa
FB		 558 fd_reset(&fdctrl->drives[i]);
559 fdctrl_reset_fifo(fdctrl);
8977f3c1 560 if (do_irq)
baca51fa
FB		 561 fdctrl_raise_irq(fdctrl, 0x20);
562}
563
564static inline fdrive_t *drv0 (fdctrl_t *fdctrl)
565{
566 return &fdctrl->drives[fdctrl->bootsel];
567}
568
569static inline fdrive_t *drv1 (fdctrl_t *fdctrl)
570{
571 return &fdctrl->drives[1 - fdctrl->bootsel];
572}
573
574static fdrive_t *get_cur_drv (fdctrl_t *fdctrl)
575{
576 return fdctrl->cur_drv == 0 ? drv0(fdctrl) : drv1(fdctrl);
8977f3c1
FB		 577}
578
579/* Status B register : 0x01 (read-only) */
baca51fa 580static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl)
8977f3c1 581{
baca51fa 582 fdctrl_reset_irq(fdctrl);
8977f3c1
FB		 583 FLOPPY_DPRINTF("status register: 0x00\n");
584
585 return 0;
586}
587
588/* Digital output register : 0x02 */
baca51fa 589static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl)
8977f3c1 590{
8977f3c1
FB		 591 uint32_t retval = 0;
592
8977f3c1 593 /* Drive motors state indicators */
baca51fa
FB		 594 if (drv0(fdctrl)->drflags & FDRIVE_MOTOR_ON)
595 retval |= 1 << 5;
596 if (drv1(fdctrl)->drflags & FDRIVE_MOTOR_ON)
597 retval |= 1 << 4;
8977f3c1 598 /* DMA enable */
baca51fa 599 retval |= fdctrl->dma_en << 3;
8977f3c1 600 /* Reset indicator */
baca51fa 601 retval |= (fdctrl->state & FD_CTRL_RESET) == 0 ? 0x04 : 0;
8977f3c1 602 /* Selected drive */
baca51fa 603 retval |= fdctrl->cur_drv;
8977f3c1
FB		 604 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
605
606 return retval;
607}
608
baca51fa 609static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value)
8977f3c1 610{
baca51fa 611 fdctrl_reset_irq(fdctrl);
8977f3c1 612 /* Reset mode */
baca51fa 613 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1
FB		 614 if (!(value & 0x04)) {
615 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
616 return;
617 }
618 }
619 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
620 /* Drive motors state indicators */
621 if (value & 0x20)
baca51fa 622 fd_start(drv1(fdctrl));
8977f3c1 623 else
baca51fa 624 fd_stop(drv1(fdctrl));
8977f3c1 625 if (value & 0x10)
baca51fa 626 fd_start(drv0(fdctrl));
8977f3c1 627 else
baca51fa 628 fd_stop(drv0(fdctrl));
8977f3c1
FB		 629 /* DMA enable */
630#if 0
baca51fa
FB		 631 if (fdctrl->dma_chann != -1)
632 fdctrl->dma_en = 1 - ((value >> 3) & 1);
8977f3c1
FB		 633#endif
634 /* Reset */
635 if (!(value & 0x04)) {
baca51fa 636 if (!(fdctrl->state & FD_CTRL_RESET)) {
8977f3c1 637 FLOPPY_DPRINTF("controler enter RESET state\n");
baca51fa 638 fdctrl->state |= FD_CTRL_RESET;
8977f3c1
FB		 639 }
640 } else {
baca51fa 641 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1 642 FLOPPY_DPRINTF("controler out of RESET state\n");
fb6cf1d0 643 fdctrl_reset(fdctrl, 1);
baca51fa 644 fdctrl->state &= ~(FD_CTRL_RESET | FD_CTRL_SLEEP);
8977f3c1
FB		 645 }
646 }
647 /* Selected drive */
baca51fa 648 fdctrl->cur_drv = value & 1;
8977f3c1
FB		 649}
650
651/* Tape drive register : 0x03 */
baca51fa 652static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl)
8977f3c1
FB		 653{
654 uint32_t retval = 0;
655
baca51fa 656 fdctrl_reset_irq(fdctrl);
8977f3c1 657 /* Disk boot selection indicator */
baca51fa 658 retval |= fdctrl->bootsel << 2;
8977f3c1
FB		 659 /* Tape indicators: never allowed */
660 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
661
662 return retval;
663}
664
baca51fa 665static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value)
8977f3c1 666{
baca51fa 667 fdctrl_reset_irq(fdctrl);
8977f3c1 668 /* Reset mode */
baca51fa 669 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1
FB		 670 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
671 return;
672 }
673 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
674 /* Disk boot selection indicator */
baca51fa 675 fdctrl->bootsel = (value >> 2) & 1;
8977f3c1
FB		 676 /* Tape indicators: never allow */
677}
678
679/* Main status register : 0x04 (read) */
baca51fa 680static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl)
8977f3c1
FB		 681{
682 uint32_t retval = 0;
683
baca51fa
FB		 684 fdctrl_reset_irq(fdctrl);
685 fdctrl->state &= ~(FD_CTRL_SLEEP | FD_CTRL_RESET);
686 if (!(fdctrl->state & FD_CTRL_BUSY)) {
8977f3c1
FB		 687 /* Data transfer allowed */
688 retval |= 0x80;
689 /* Data transfer direction indicator */
baca51fa 690 if (fdctrl->data_dir == FD_DIR_READ)
8977f3c1
FB		 691 retval |= 0x40;
692 }
693 /* Should handle 0x20 for SPECIFY command */
694 /* Command busy indicator */
baca51fa
FB		 695 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA ||
696 FD_STATE(fdctrl->data_state) == FD_STATE_STATUS)
8977f3c1
FB		 697 retval |= 0x10;
698 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
699
700 return retval;
701}
702
703/* Data select rate register : 0x04 (write) */
baca51fa 704static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value)
8977f3c1 705{
baca51fa 706 fdctrl_reset_irq(fdctrl);
8977f3c1 707 /* Reset mode */
baca51fa 708 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1
FB		 709 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
710 return;
711 }
8977f3c1
FB		 712 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
713 /* Reset: autoclear */
714 if (value & 0x80) {
baca51fa
FB		 715 fdctrl->state |= FD_CTRL_RESET;
716 fdctrl_reset(fdctrl, 1);
717 fdctrl->state &= ~FD_CTRL_RESET;
8977f3c1
FB		 718 }
719 if (value & 0x40) {
baca51fa
FB		 720 fdctrl->state |= FD_CTRL_SLEEP;
721 fdctrl_reset(fdctrl, 1);
8977f3c1
FB		 722 }
723// fdctrl.precomp = (value >> 2) & 0x07;
724}
725
726/* Digital input register : 0x07 (read-only) */
baca51fa 727static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl)
8977f3c1 728{
8977f3c1
FB		 729 uint32_t retval = 0;
730
baca51fa
FB		 731 fdctrl_reset_irq(fdctrl);
732 if (drv0(fdctrl)->drflags & FDRIVE_REVALIDATE ||
733 drv1(fdctrl)->drflags & FDRIVE_REVALIDATE)
8977f3c1
FB		 734 retval |= 0x80;
735 if (retval != 0)
baca51fa
FB		 736 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
737 drv0(fdctrl)->drflags &= ~FDRIVE_REVALIDATE;
738 drv1(fdctrl)->drflags &= ~FDRIVE_REVALIDATE;
8977f3c1
FB		 739
740 return retval;
741}
742
743/* FIFO state control */
baca51fa 744static void fdctrl_reset_fifo (fdctrl_t *fdctrl)
8977f3c1 745{
baca51fa
FB		 746 fdctrl->data_dir = FD_DIR_WRITE;
747 fdctrl->data_pos = 0;
748 FD_SET_STATE(fdctrl->data_state, FD_STATE_CMD);
8977f3c1
FB		 749}
750
751/* Set FIFO status for the host to read */
baca51fa 752static void fdctrl_set_fifo (fdctrl_t *fdctrl, int fifo_len, int do_irq)
8977f3c1 753{
baca51fa
FB		 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);
8977f3c1 758 if (do_irq)
baca51fa 759 fdctrl_raise_irq(fdctrl, 0x00);
8977f3c1
FB		 760}
761
762/* Set an error: unimplemented/unknown command */
baca51fa 763static void fdctrl_unimplemented (fdctrl_t *fdctrl)
8977f3c1
FB		 764{
765#if 0
baca51fa
FB		 766 fdrive_t *cur_drv;
767
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);
8977f3c1 773#else
baca51fa
FB		 774 // fdctrl_reset_fifo(fdctrl);
775 fdctrl->fifo[0] = 0x80;
776 fdctrl_set_fifo(fdctrl, 1, 0);
8977f3c1
FB		 777#endif
778}
779
780/* Callback for transfer end (stop or abort) */
baca51fa
FB		 781static void fdctrl_stop_transfer (fdctrl_t *fdctrl, uint8_t status0,
782 uint8_t status1, uint8_t status2)
8977f3c1 783{
baca51fa 784 fdrive_t *cur_drv;
8977f3c1 785
baca51fa 786 cur_drv = get_cur_drv(fdctrl);
8977f3c1
FB		 787 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
788 status0, status1, status2,
baca51fa
FB		 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);
8977f3c1
FB		 801}
802
803/* Prepare a data transfer (either DMA or FIFO) */
baca51fa 804static void fdctrl_start_transfer (fdctrl_t *fdctrl, int direction)
8977f3c1 805{
baca51fa 806 fdrive_t *cur_drv;
8977f3c1
FB		 807 uint8_t kh, kt, ks;
808 int did_seek;
809
baca51fa
FB		 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];
8977f3c1 815 FLOPPY_DPRINTF("Start tranfert at %d %d %02x %02x (%d)\n",
baca51fa 816 fdctrl->cur_drv, kh, kt, ks,
8977f3c1
FB		 817 _fd_sector(kh, kt, ks, cur_drv->last_sect));
818 did_seek = 0;
baca51fa 819 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
8977f3c1
FB		 820 case 2:
821 /* sect too big */
baca51fa
FB		 822 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
823 fdctrl->fifo[3] = kt;
824 fdctrl->fifo[4] = kh;
825 fdctrl->fifo[5] = ks;
8977f3c1
FB		 826 return;
827 case 3:
828 /* track too big */
baca51fa
FB		 829 fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
830 fdctrl->fifo[3] = kt;
831 fdctrl->fifo[4] = kh;
832 fdctrl->fifo[5] = ks;
8977f3c1
FB		 833 return;
834 case 4:
835 /* No seek enabled */
baca51fa
FB		 836 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
837 fdctrl->fifo[3] = kt;
838 fdctrl->fifo[4] = kh;
839 fdctrl->fifo[5] = ks;
8977f3c1
FB		 840 return;
841 case 1:
842 did_seek = 1;
843 break;
844 default:
845 break;
846 }
847 /* Set the FIFO state */
baca51fa
FB		 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;
853 else
854 fdctrl->data_state &= ~FD_STATE_MULTI;
8977f3c1 855 if (did_seek)
baca51fa
FB		 856 fdctrl->data_state |= FD_STATE_SEEK;
857 else
858 fdctrl->data_state &= ~FD_STATE_SEEK;
859 if (fdctrl->fifo[5] == 00) {
860 fdctrl->data_len = fdctrl->fifo[8];
861 } else {
862 int tmp;
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;
868 }
869 if (fdctrl->dma_en) {
8977f3c1
FB		 870 int dma_mode;
871 /* DMA transfer are enabled. Check if DMA channel is well programmed */
baca51fa 872 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
8977f3c1 873 dma_mode = (dma_mode >> 2) & 3;
baca51fa
FB		 874 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
875 dma_mode, direction,
876 (128 << fdctrl->fifo[5]) *
877 (cur_drv->last_sect - ks + 1), fdctrl->data_len);
8977f3c1
FB		 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 */
baca51fa 883 fdctrl->state |= FD_CTRL_BUSY;
8977f3c1
FB		 884 /* Now, we just have to wait for the DMA controler to
885 * recall us...
886 */
baca51fa
FB		 887 DMA_hold_DREQ(fdctrl->dma_chann);
888 DMA_schedule(fdctrl->dma_chann);
8977f3c1 889 return;
baca51fa
FB		 890 } else {
891 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
8977f3c1
FB		 892 }
893 }
894 FLOPPY_DPRINTF("start non-DMA transfer\n");
895 /* IO based transfer: calculate len */
baca51fa 896 fdctrl_raise_irq(fdctrl, 0x00);
8977f3c1
FB		 897
898 return;
899}
900
901/* Prepare a transfer of deleted data */
baca51fa 902static void fdctrl_start_transfer_del (fdctrl_t *fdctrl, int direction)
8977f3c1
FB		 903{
904 /* We don't handle deleted data,
905 * so we don't return *ANYTHING*
906 */
baca51fa 907 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
8977f3c1
FB		 908}
909
910/* handlers for DMA transfers */
f9e92e97 911static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size)
8977f3c1 912{
baca51fa
FB		 913 fdctrl_t *fdctrl;
914 fdrive_t *cur_drv;
915 int len, start_pos, rel_pos;
8977f3c1
FB		 916 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
917
baca51fa
FB		 918 fdctrl = opaque;
919 fdctrl_reset_irq(fdctrl);
920 if (!(fdctrl->state & FD_CTRL_BUSY)) {
8977f3c1
FB		 921 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
922 return 0;
923 }
baca51fa
FB		 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)
8977f3c1 927 status2 = 0x04;
baca51fa
FB		 928 if (size > fdctrl->data_len)
929 size = fdctrl->data_len;
69e5bc90 930 if (cur_drv->bs == NULL) {
baca51fa
FB		 931 if (fdctrl->data_dir == FD_DIR_WRITE)
932 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
933 else
934 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
935 len = 0;
69e5bc90
FB		 936 goto transfer_error;
937 }
baca51fa
FB		 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) {
8977f3c1
FB		 953 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
954 fd_sector(cur_drv));
955 /* Sure, image size is too small... */
baca51fa 956 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
8977f3c1 957 }
8977f3c1 958 }
baca51fa
FB		 959 switch (fdctrl->data_dir) {
960 case FD_DIR_READ:
961 /* READ commands */
962 cpu_physical_memory_write(addr + fdctrl->data_pos,
963 fdctrl->fifo + rel_pos, len);
964 break;
965 case FD_DIR_WRITE:
966 /* WRITE commands */
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);
973 goto transfer_error;
f9e92e97 974 }
baca51fa
FB		 975 break;
976 default:
977 /* SCAN commands */
978 {
979 uint8_t tmpbuf[FD_SECTOR_LEN];
980 int ret;
981 cpu_physical_memory_read(addr + fdctrl->data_pos,
982 tmpbuf, len);
983 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
8977f3c1
FB		 984 if (ret == 0) {
985 status2 = 0x08;
986 goto end_transfer;
987 }
baca51fa
FB		 988 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
989 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
8977f3c1
FB		 990 status2 = 0x00;
991 goto end_transfer;
992 }
993 }
baca51fa 994 break;
8977f3c1 995 }
baca51fa
FB		 996 fdctrl->data_pos += len;
997 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
998 if (rel_pos == 0) {
8977f3c1 999 /* Seek to next sector */
baca51fa
FB		 1000 cur_drv->sect++;
1001 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
1002 cur_drv->head, cur_drv->track, cur_drv->sect,
1003 fd_sector(cur_drv),
1004 fdctrl->data_pos - size);
1005 if (cur_drv->sect > cur_drv->last_sect) {
1006 cur_drv->sect = 1;
1007 if (FD_MULTI_TRACK(fdctrl->data_state)) {
1008 if (cur_drv->head == 0 &&
1009 (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
8977f3c1
FB		 1010 cur_drv->head = 1;
1011 } else {
8977f3c1 1012 cur_drv->head = 0;
baca51fa
FB		 1013 cur_drv->track++;
1014 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1015 break;
8977f3c1
FB		 1016 }
1017 } else {
baca51fa
FB		 1018 cur_drv->track++;
1019 break;
1020 }
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));
8977f3c1
FB		 1024 }
1025 }
1026 }
1027end_transfer:
baca51fa
FB		 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)
8977f3c1 1034 status2 = 0x08;
baca51fa 1035 if (FD_DID_SEEK(fdctrl->data_state))
8977f3c1 1036 status0 |= 0x20;
baca51fa
FB		 1037 fdctrl->data_len -= len;
1038 // if (fdctrl->data_len == 0)
1039 fdctrl_stop_transfer(fdctrl, status0, status1, status2);
8977f3c1
FB		 1040transfer_error:
1041
baca51fa 1042 return len;
8977f3c1
FB		 1043}
1044
8977f3c1 1045/* Data register : 0x05 */
baca51fa 1046static uint32_t fdctrl_read_data (fdctrl_t *fdctrl)
8977f3c1 1047{
baca51fa 1048 fdrive_t *cur_drv;
8977f3c1
FB		 1049 uint32_t retval = 0;
1050 int pos, len;
1051
baca51fa
FB		 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) {
8977f3c1
FB		 1056 FLOPPY_ERROR("can't read data in CMD state\n");
1057 return 0;
1058 }
baca51fa
FB		 1059 pos = fdctrl->data_pos;
1060 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
8977f3c1
FB		 1061 pos %= FD_SECTOR_LEN;
1062 if (pos == 0) {
baca51fa 1063 len = fdctrl->data_len - fdctrl->data_pos;
8977f3c1
FB		 1064 if (len > FD_SECTOR_LEN)
1065 len = FD_SECTOR_LEN;
1066 bdrv_read(cur_drv->bs, fd_sector(cur_drv),
baca51fa 1067 fdctrl->fifo, len);
8977f3c1
FB		 1068 }
1069 }
baca51fa
FB		 1070 retval = fdctrl->fifo[pos];
1071 if (++fdctrl->data_pos == fdctrl->data_len) {
1072 fdctrl->data_pos = 0;
8977f3c1
FB		 1073 /* Switch from transfert mode to status mode
1074 * then from status mode to command mode
1075 */
baca51fa
FB		 1076 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
1077 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
8977f3c1 1078 else
baca51fa 1079 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1080 }
1081 FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1082
1083 return retval;
1084}
1085
baca51fa 1086static void fdctrl_format_sector (fdctrl_t *fdctrl)
8977f3c1 1087{
baca51fa
FB		 1088 fdrive_t *cur_drv;
1089 uint8_t kh, kt, ks;
1090 int did_seek;
8977f3c1 1091
baca51fa
FB		 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));
1100 did_seek = 0;
1101 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
1102 case 2:
1103 /* sect too big */
1104 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
1105 fdctrl->fifo[3] = kt;
1106 fdctrl->fifo[4] = kh;
1107 fdctrl->fifo[5] = ks;
1108 return;
1109 case 3:
1110 /* track too big */
1111 fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
1112 fdctrl->fifo[3] = kt;
1113 fdctrl->fifo[4] = kh;
1114 fdctrl->fifo[5] = ks;
1115 return;
1116 case 4:
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;
1122 return;
1123 case 1:
1124 did_seek = 1;
1125 fdctrl->data_state |= FD_STATE_SEEK;
1126 break;
1127 default:
1128 break;
1129 }
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);
1135 } else {
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);
1141 else
1142 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1143 } else {
1144 /* More to do */
1145 fdctrl->data_pos = 0;
1146 fdctrl->data_len = 4;
1147 }
1148 }
1149}
1150
1151static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
1152{
1153 fdrive_t *cur_drv;
1154
1155 fdctrl_reset_irq(fdctrl);
1156 cur_drv = get_cur_drv(fdctrl);
8977f3c1 1157 /* Reset mode */
baca51fa 1158 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1
FB		 1159 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
1160 return;
1161 }
baca51fa
FB		 1162 fdctrl->state &= ~FD_CTRL_SLEEP;
1163 if (FD_STATE(fdctrl->data_state) == FD_STATE_STATUS) {
8977f3c1
FB		 1164 FLOPPY_ERROR("can't write data in status mode\n");
1165 return;
1166 }
1167 /* Is it write command time ? */
baca51fa 1168 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
8977f3c1 1169 /* FIFO data write */
baca51fa
FB		 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) {
8977f3c1 1173 bdrv_write(cur_drv->bs, fd_sector(cur_drv),
baca51fa 1174 fdctrl->fifo, FD_SECTOR_LEN);
8977f3c1
FB		 1175 }
1176 /* Switch from transfert mode to status mode
1177 * then from status mode to command mode
1178 */
baca51fa
FB		 1179 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
1180 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
8977f3c1
FB		 1181 return;
1182 }
baca51fa 1183 if (fdctrl->data_pos == 0) {
8977f3c1
FB		 1184 /* Command */
1185 switch (value & 0x5F) {
1186 case 0x46:
1187 /* READ variants */
1188 FLOPPY_DPRINTF("READ command\n");
1189 /* 8 parameters cmd */
baca51fa 1190 fdctrl->data_len = 9;
8977f3c1
FB		 1191 goto enqueue;
1192 case 0x4C:
1193 /* READ_DELETED variants */
1194 FLOPPY_DPRINTF("READ_DELETED command\n");
1195 /* 8 parameters cmd */
baca51fa 1196 fdctrl->data_len = 9;
8977f3c1
FB		 1197 goto enqueue;
1198 case 0x50:
1199 /* SCAN_EQUAL variants */
1200 FLOPPY_DPRINTF("SCAN_EQUAL command\n");
1201 /* 8 parameters cmd */
baca51fa 1202 fdctrl->data_len = 9;
8977f3c1
FB		 1203 goto enqueue;
1204 case 0x56:
1205 /* VERIFY variants */
1206 FLOPPY_DPRINTF("VERIFY command\n");
1207 /* 8 parameters cmd */
baca51fa 1208 fdctrl->data_len = 9;
8977f3c1
FB		 1209 goto enqueue;
1210 case 0x59:
1211 /* SCAN_LOW_OR_EQUAL variants */
1212 FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
1213 /* 8 parameters cmd */
baca51fa 1214 fdctrl->data_len = 9;
8977f3c1
FB		 1215 goto enqueue;
1216 case 0x5D:
1217 /* SCAN_HIGH_OR_EQUAL variants */
1218 FLOPPY_DPRINTF("SCAN_HIGH_OR_EQUAL command\n");
1219 /* 8 parameters cmd */
baca51fa 1220 fdctrl->data_len = 9;
8977f3c1
FB		 1221 goto enqueue;
1222 default:
1223 break;
1224 }
1225 switch (value & 0x7F) {
1226 case 0x45:
1227 /* WRITE variants */
1228 FLOPPY_DPRINTF("WRITE command\n");
1229 /* 8 parameters cmd */
baca51fa 1230 fdctrl->data_len = 9;
8977f3c1
FB		 1231 goto enqueue;
1232 case 0x49:
1233 /* WRITE_DELETED variants */
1234 FLOPPY_DPRINTF("WRITE_DELETED command\n");
1235 /* 8 parameters cmd */
baca51fa 1236 fdctrl->data_len = 9;
8977f3c1
FB		 1237 goto enqueue;
1238 default:
1239 break;
1240 }
1241 switch (value) {
1242 case 0x03:
1243 /* SPECIFY */
1244 FLOPPY_DPRINTF("SPECIFY command\n");
1245 /* 1 parameter cmd */
baca51fa 1246 fdctrl->data_len = 3;
8977f3c1
FB		 1247 goto enqueue;
1248 case 0x04:
1249 /* SENSE_DRIVE_STATUS */
1250 FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
1251 /* 1 parameter cmd */
baca51fa 1252 fdctrl->data_len = 2;
8977f3c1
FB		 1253 goto enqueue;
1254 case 0x07:
1255 /* RECALIBRATE */
1256 FLOPPY_DPRINTF("RECALIBRATE command\n");
1257 /* 1 parameter cmd */
baca51fa 1258 fdctrl->data_len = 2;
8977f3c1
FB		 1259 goto enqueue;
1260 case 0x08:
1261 /* SENSE_INTERRUPT_STATUS */
1262 FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
baca51fa 1263 fdctrl->int_status);
8977f3c1 1264 /* No parameters cmd: returns status if no interrupt */
baca51fa
FB		 1265 fdctrl->fifo[0] =
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;
8977f3c1
FB		 1271 return;
1272 case 0x0E:
1273 /* DUMPREG */
1274 FLOPPY_DPRINTF("DUMPREG command\n");
1275 /* Drives position */
baca51fa
FB		 1276 fdctrl->fifo[0] = drv0(fdctrl)->track;
1277 fdctrl->fifo[1] = drv1(fdctrl)->track;
1278 fdctrl->fifo[2] = 0;
1279 fdctrl->fifo[3] = 0;
8977f3c1 1280 /* timers */
baca51fa
FB		 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) |
8977f3c1 1285 (cur_drv->perpendicular << 2);
baca51fa
FB		 1286 fdctrl->fifo[8] = fdctrl->config;
1287 fdctrl->fifo[9] = fdctrl->precomp_trk;
1288 fdctrl_set_fifo(fdctrl, 10, 0);
8977f3c1
FB		 1289 return;
1290 case 0x0F:
1291 /* SEEK */
1292 FLOPPY_DPRINTF("SEEK command\n");
1293 /* 2 parameters cmd */
baca51fa 1294 fdctrl->data_len = 3;
8977f3c1
FB		 1295 goto enqueue;
1296 case 0x10:
1297 /* VERSION */
1298 FLOPPY_DPRINTF("VERSION command\n");
1299 /* No parameters cmd */
1300 /* Controler's version */
baca51fa
FB		 1301 fdctrl->fifo[0] = fdctrl->version;
1302 fdctrl_set_fifo(fdctrl, 1, 1);
8977f3c1
FB		 1303 return;
1304 case 0x12:
1305 /* PERPENDICULAR_MODE */
1306 FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
1307 /* 1 parameter cmd */
baca51fa 1308 fdctrl->data_len = 2;
8977f3c1
FB		 1309 goto enqueue;
1310 case 0x13:
1311 /* CONFIGURE */
1312 FLOPPY_DPRINTF("CONFIGURE command\n");
1313 /* 3 parameters cmd */
baca51fa 1314 fdctrl->data_len = 4;
8977f3c1
FB		 1315 goto enqueue;
1316 case 0x14:
1317 /* UNLOCK */
1318 FLOPPY_DPRINTF("UNLOCK command\n");
1319 /* No parameters cmd */
baca51fa
FB		 1320 fdctrl->lock = 0;
1321 fdctrl->fifo[0] = 0;
1322 fdctrl_set_fifo(fdctrl, 1, 0);
8977f3c1
FB		 1323 return;
1324 case 0x17:
1325 /* POWERDOWN_MODE */
1326 FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
1327 /* 2 parameters cmd */
baca51fa 1328 fdctrl->data_len = 3;
8977f3c1
FB		 1329 goto enqueue;
1330 case 0x18:
1331 /* PART_ID */
1332 FLOPPY_DPRINTF("PART_ID command\n");
1333 /* No parameters cmd */
baca51fa
FB		 1334 fdctrl->fifo[0] = 0x41; /* Stepping 1 */
1335 fdctrl_set_fifo(fdctrl, 1, 0);
8977f3c1
FB		 1336 return;
1337 case 0x2C:
1338 /* SAVE */
1339 FLOPPY_DPRINTF("SAVE command\n");
1340 /* No parameters cmd */
baca51fa
FB		 1341 fdctrl->fifo[0] = 0;
1342 fdctrl->fifo[1] = 0;
8977f3c1 1343 /* Drives position */
baca51fa
FB		 1344 fdctrl->fifo[2] = drv0(fdctrl)->track;
1345 fdctrl->fifo[3] = drv1(fdctrl)->track;
1346 fdctrl->fifo[4] = 0;
1347 fdctrl->fifo[5] = 0;
8977f3c1 1348 /* timers */
baca51fa
FB		 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) |
8977f3c1 1353 (cur_drv->perpendicular << 2);
baca51fa
FB		 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);
8977f3c1
FB		 1360 return;
1361 case 0x33:
1362 /* OPTION */
1363 FLOPPY_DPRINTF("OPTION command\n");
1364 /* 1 parameter cmd */
baca51fa 1365 fdctrl->data_len = 2;
8977f3c1
FB		 1366 goto enqueue;
1367 case 0x42:
1368 /* READ_TRACK */
1369 FLOPPY_DPRINTF("READ_TRACK command\n");
1370 /* 8 parameters cmd */
baca51fa 1371 fdctrl->data_len = 9;
8977f3c1
FB		 1372 goto enqueue;
1373 case 0x4A:
1374 /* READ_ID */
1375 FLOPPY_DPRINTF("READ_ID command\n");
1376 /* 1 parameter cmd */
baca51fa 1377 fdctrl->data_len = 2;
8977f3c1
FB		 1378 goto enqueue;
1379 case 0x4C:
1380 /* RESTORE */
1381 FLOPPY_DPRINTF("RESTORE command\n");
1382 /* 17 parameters cmd */
baca51fa 1383 fdctrl->data_len = 18;
8977f3c1
FB		 1384 goto enqueue;
1385 case 0x4D:
1386 /* FORMAT_TRACK */
1387 FLOPPY_DPRINTF("FORMAT_TRACK command\n");
1388 /* 5 parameters cmd */
baca51fa 1389 fdctrl->data_len = 6;
8977f3c1
FB		 1390 goto enqueue;
1391 case 0x8E:
1392 /* DRIVE_SPECIFICATION_COMMAND */
1393 FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
1394 /* 5 parameters cmd */
baca51fa 1395 fdctrl->data_len = 6;
8977f3c1
FB		 1396 goto enqueue;
1397 case 0x8F:
1398 /* RELATIVE_SEEK_OUT */
1399 FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
1400 /* 2 parameters cmd */
baca51fa 1401 fdctrl->data_len = 3;
8977f3c1
FB		 1402 goto enqueue;
1403 case 0x94:
1404 /* LOCK */
1405 FLOPPY_DPRINTF("LOCK command\n");
1406 /* No parameters cmd */
baca51fa
FB		 1407 fdctrl->lock = 1;
1408 fdctrl->fifo[0] = 0x10;
1409 fdctrl_set_fifo(fdctrl, 1, 1);
8977f3c1
FB		 1410 return;
1411 case 0xCD:
1412 /* FORMAT_AND_WRITE */
1413 FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
1414 /* 10 parameters cmd */
baca51fa 1415 fdctrl->data_len = 11;
8977f3c1
FB		 1416 goto enqueue;
1417 case 0xCF:
1418 /* RELATIVE_SEEK_IN */
1419 FLOPPY_DPRINTF("RELATIVE_SEEK_IN command\n");
1420 /* 2 parameters cmd */
baca51fa 1421 fdctrl->data_len = 3;
8977f3c1
FB		 1422 goto enqueue;
1423 default:
1424 /* Unknown command */
1425 FLOPPY_ERROR("unknown command: 0x%02x\n", value);
baca51fa 1426 fdctrl_unimplemented(fdctrl);
8977f3c1
FB		 1427 return;
1428 }
1429 }
1430enqueue:
baca51fa
FB		 1431 FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
1432 fdctrl->fifo[fdctrl->data_pos] = value;
1433 if (++fdctrl->data_pos == fdctrl->data_len) {
8977f3c1
FB		 1434 /* We now have all parameters
1435 * and will be able to treat the command
1436 */
baca51fa
FB		 1437 if (fdctrl->data_state & FD_STATE_FORMAT) {
1438 fdctrl_format_sector(fdctrl);
1439 return;
1440 }
1441 switch (fdctrl->fifo[0] & 0x1F) {
8977f3c1
FB		 1442 case 0x06:
1443 {
1444 /* READ variants */
1445 FLOPPY_DPRINTF("treat READ command\n");
baca51fa 1446 fdctrl_start_transfer(fdctrl, FD_DIR_READ);
8977f3c1
FB		 1447 return;
1448 }
1449 case 0x0C:
1450 /* READ_DELETED variants */
1451// FLOPPY_DPRINTF("treat READ_DELETED command\n");
1452 FLOPPY_ERROR("treat READ_DELETED command\n");
baca51fa 1453 fdctrl_start_transfer_del(fdctrl, FD_DIR_READ);
8977f3c1
FB		 1454 return;
1455 case 0x16:
1456 /* VERIFY variants */
1457// FLOPPY_DPRINTF("treat VERIFY command\n");
1458 FLOPPY_ERROR("treat VERIFY command\n");
baca51fa 1459 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
8977f3c1
FB		 1460 return;
1461 case 0x10:
1462 /* SCAN_EQUAL variants */
1463// FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
1464 FLOPPY_ERROR("treat SCAN_EQUAL command\n");
baca51fa 1465 fdctrl_start_transfer(fdctrl, FD_DIR_SCANE);
8977f3c1
FB		 1466 return;
1467 case 0x19:
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");
baca51fa 1471 fdctrl_start_transfer(fdctrl, FD_DIR_SCANL);
8977f3c1
FB		 1472 return;
1473 case 0x1D:
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");
baca51fa 1477 fdctrl_start_transfer(fdctrl, FD_DIR_SCANH);
8977f3c1
FB		 1478 return;
1479 default:
1480 break;
1481 }
baca51fa 1482 switch (fdctrl->fifo[0] & 0x3F) {
8977f3c1
FB		 1483 case 0x05:
1484 /* WRITE variants */
baca51fa
FB		 1485 FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl->fifo[0]);
1486 fdctrl_start_transfer(fdctrl, FD_DIR_WRITE);
8977f3c1
FB		 1487 return;
1488 case 0x09:
1489 /* WRITE_DELETED variants */
1490// FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
1491 FLOPPY_ERROR("treat WRITE_DELETED command\n");
baca51fa 1492 fdctrl_start_transfer_del(fdctrl, FD_DIR_WRITE);
8977f3c1
FB		 1493 return;
1494 default:
1495 break;
1496 }
baca51fa 1497 switch (fdctrl->fifo[0]) {
8977f3c1
FB		 1498 case 0x03:
1499 /* SPECIFY */
1500 FLOPPY_DPRINTF("treat SPECIFY command\n");
baca51fa
FB		 1501 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
1502 fdctrl->timer1 = fdctrl->fifo[1] >> 1;
1503 fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ;
8977f3c1 1504 /* No result back */
baca51fa 1505 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1506 break;
1507 case 0x04:
1508 /* SENSE_DRIVE_STATUS */
1509 FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
baca51fa
FB		 1510 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1511 cur_drv = get_cur_drv(fdctrl);
1512 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
8977f3c1 1513 /* 1 Byte status back */
baca51fa 1514 fdctrl->fifo[0] = (cur_drv->ro << 6) |
8977f3c1 1515 (cur_drv->track == 0 ? 0x10 : 0x00) |
baca51fa
FB		 1516 fdctrl->cur_drv;
1517 fdctrl_set_fifo(fdctrl, 1, 0);
8977f3c1
FB		 1518 break;
1519 case 0x07:
1520 /* RECALIBRATE */
1521 FLOPPY_DPRINTF("treat RECALIBRATE command\n");
baca51fa
FB		 1522 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1523 cur_drv = get_cur_drv(fdctrl);
8977f3c1 1524 fd_recalibrate(cur_drv);
baca51fa 1525 fdctrl_reset_fifo(fdctrl);
8977f3c1 1526 /* Raise Interrupt */
baca51fa 1527 fdctrl_raise_irq(fdctrl, 0x20);
8977f3c1
FB		 1528 break;
1529 case 0x0F:
1530 /* SEEK */
1531 FLOPPY_DPRINTF("treat SEEK command\n");
baca51fa
FB		 1532 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1533 cur_drv = get_cur_drv(fdctrl);
1534 fd_start(cur_drv);
1535 if (fdctrl->fifo[2] <= cur_drv->track)
8977f3c1
FB		 1536 cur_drv->dir = 1;
1537 else
1538 cur_drv->dir = 0;
baca51fa
FB		 1539 fdctrl_reset_fifo(fdctrl);
1540 if (fdctrl->fifo[2] > cur_drv->max_track) {
1541 fdctrl_raise_irq(fdctrl, 0x60);
8977f3c1 1542 } else {
baca51fa 1543 cur_drv->track = fdctrl->fifo[2];
8977f3c1 1544 /* Raise Interrupt */
baca51fa 1545 fdctrl_raise_irq(fdctrl, 0x20);
8977f3c1
FB		 1546 }
1547 break;
1548 case 0x12:
1549 /* PERPENDICULAR_MODE */
1550 FLOPPY_DPRINTF("treat PERPENDICULAR_MODE command\n");
baca51fa
FB		 1551 if (fdctrl->fifo[1] & 0x80)
1552 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
8977f3c1 1553 /* No result back */
baca51fa 1554 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1555 break;
1556 case 0x13:
1557 /* CONFIGURE */
1558 FLOPPY_DPRINTF("treat CONFIGURE command\n");
baca51fa
FB		 1559 fdctrl->config = fdctrl->fifo[2];
1560 fdctrl->precomp_trk = fdctrl->fifo[3];
8977f3c1 1561 /* No result back */
baca51fa 1562 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1563 break;
1564 case 0x17:
1565 /* POWERDOWN_MODE */
1566 FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
baca51fa
FB		 1567 fdctrl->pwrd = fdctrl->fifo[1];
1568 fdctrl->fifo[0] = fdctrl->fifo[1];
1569 fdctrl_set_fifo(fdctrl, 1, 1);
8977f3c1
FB		 1570 break;
1571 case 0x33:
1572 /* OPTION */
1573 FLOPPY_DPRINTF("treat OPTION command\n");
1574 /* No result back */
baca51fa 1575 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1576 break;
1577 case 0x42:
1578 /* READ_TRACK */
1579// FLOPPY_DPRINTF("treat READ_TRACK command\n");
1580 FLOPPY_ERROR("treat READ_TRACK command\n");
baca51fa 1581 fdctrl_start_transfer(fdctrl, FD_DIR_READ);
8977f3c1
FB		 1582 break;
1583 case 0x4A:
1584 /* READ_ID */
baca51fa
FB		 1585 FLOPPY_DPRINTF("treat READ_ID command\n");
1586 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
8977f3c1
FB		 1587 break;
1588 case 0x4C:
1589 /* RESTORE */
1590 FLOPPY_DPRINTF("treat RESTORE command\n");
1591 /* Drives position */
baca51fa
FB		 1592 drv0(fdctrl)->track = fdctrl->fifo[3];
1593 drv1(fdctrl)->track = fdctrl->fifo[4];
8977f3c1 1594 /* timers */
baca51fa
FB		 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);
8977f3c1
FB		 1604 break;
1605 case 0x4D:
1606 /* FORMAT_TRACK */
baca51fa
FB		 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;
1613 else
1614 fdctrl->data_state &= ~FD_STATE_MULTI;
1615 fdctrl->data_state &= ~FD_STATE_SEEK;
1616 cur_drv->bps =
1617 fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
1618#if 0
1619 cur_drv->last_sect =
1620 cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
1621 fdctrl->fifo[3] / 2;
1622#else
1623 cur_drv->last_sect = fdctrl->fifo[3];
1624#endif
1625 /* Bochs BIOS is buggy and don't send format informations
1626 * for each sector. So, pretend all's done right now...
1627 */
1628 fdctrl->data_state &= ~FD_STATE_FORMAT;
1629 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
8977f3c1
FB		 1630 break;
1631 case 0x8E:
1632 /* DRIVE_SPECIFICATION_COMMAND */
1633 FLOPPY_DPRINTF("treat DRIVE_SPECIFICATION_COMMAND command\n");
baca51fa 1634 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
8977f3c1 1635 /* Command parameters done */
baca51fa
FB		 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);
8977f3c1 1641 } else {
baca51fa 1642 fdctrl_reset_fifo(fdctrl);
8977f3c1 1643 }
baca51fa 1644 } else if (fdctrl->data_len > 7) {
8977f3c1 1645 /* ERROR */
baca51fa
FB		 1646 fdctrl->fifo[0] = 0x80 |
1647 (cur_drv->head << 2) | fdctrl->cur_drv;
1648 fdctrl_set_fifo(fdctrl, 1, 1);
8977f3c1
FB		 1649 }
1650 break;
1651 case 0x8F:
1652 /* RELATIVE_SEEK_OUT */
1653 FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
baca51fa
FB		 1654 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1655 cur_drv = get_cur_drv(fdctrl);
1656 fd_start(cur_drv);
8977f3c1 1657 cur_drv->dir = 0;
baca51fa
FB		 1658 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
1659 cur_drv->track = cur_drv->max_track - 1;
1660 } else {
1661 cur_drv->track += fdctrl->fifo[2];
8977f3c1 1662 }
baca51fa
FB		 1663 fdctrl_reset_fifo(fdctrl);
1664 fdctrl_raise_irq(fdctrl, 0x20);
8977f3c1
FB		 1665 break;
1666 case 0xCD:
1667 /* FORMAT_AND_WRITE */
1668// FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
1669 FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
baca51fa 1670 fdctrl_unimplemented(fdctrl);
8977f3c1
FB		 1671 break;
1672 case 0xCF:
1673 /* RELATIVE_SEEK_IN */
1674 FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
baca51fa
FB		 1675 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1676 cur_drv = get_cur_drv(fdctrl);
1677 fd_start(cur_drv);
8977f3c1 1678 cur_drv->dir = 1;
baca51fa
FB		 1679 if (fdctrl->fifo[2] > cur_drv->track) {
1680 cur_drv->track = 0;
1681 } else {
1682 cur_drv->track -= fdctrl->fifo[2];
8977f3c1 1683 }
baca51fa
FB		 1684 fdctrl_reset_fifo(fdctrl);
1685 /* Raise Interrupt */
1686 fdctrl_raise_irq(fdctrl, 0x20);
8977f3c1
FB		 1687 break;
1688 }
1689 }
1690}
Qemu copy for testing