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disable PCI device for PMAC
[qemu.git] / hw / fdc.c
CommitLineData
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 96 drv->bs = bs;
b939777c 97 drv->drive = FDRIVE_DRV_NONE;
baca51fa 98 drv->drflags = 0;
8977f3c1 99 drv->perpendicular = 0;
8977f3c1 100 /* Disk */
baca51fa 101 drv->last_sect = 0;
8977f3c1
FB		 102 drv->max_track = 0;
103}
104
105static int _fd_sector (uint8_t head, uint8_t track,
106 uint8_t sect, uint8_t last_sect)
107{
108 return (((track * 2) + head) * last_sect) + sect - 1;
109}
110
111/* Returns current position, in sectors, for given drive */
112static int fd_sector (fdrive_t *drv)
113{
114 return _fd_sector(drv->head, drv->track, drv->sect, drv->last_sect);
115}
116
117static int fd_seek (fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect,
118 int enable_seek)
119{
120 uint32_t sector;
baca51fa
FB		 121 int ret;
122
123 if (track > drv->max_track ||
124 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
ed5fd2cc
FB		 125 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
126 head, track, sect, 1,
127 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
128 drv->max_track, drv->last_sect);
8977f3c1
FB		 129 return 2;
130 }
131 if (sect > drv->last_sect) {
ed5fd2cc
FB		 132 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
133 head, track, sect, 1,
134 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
135 drv->max_track, drv->last_sect);
8977f3c1
FB		 136 return 3;
137 }
138 sector = _fd_sector(head, track, sect, drv->last_sect);
baca51fa 139 ret = 0;
8977f3c1
FB		 140 if (sector != fd_sector(drv)) {
141#if 0
142 if (!enable_seek) {
143 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
144 head, track, sect, 1, drv->max_track, drv->last_sect);
145 return 4;
146 }
147#endif
148 drv->head = head;
baca51fa
FB		 149 if (drv->track != track)
150 ret = 1;
8977f3c1
FB		 151 drv->track = track;
152 drv->sect = sect;
8977f3c1
FB		 153 }
154
baca51fa 155 return ret;
8977f3c1
FB		 156}
157
158/* Set drive back to track 0 */
159static void fd_recalibrate (fdrive_t *drv)
160{
161 FLOPPY_DPRINTF("recalibrate\n");
162 drv->head = 0;
163 drv->track = 0;
164 drv->sect = 1;
165 drv->dir = 1;
166 drv->rw = 0;
167}
168
a541f297
FB		 169/* Recognize floppy formats */
170typedef struct fd_format_t {
171 fdrive_type_t drive;
172 fdisk_type_t disk;
173 uint8_t last_sect;
174 uint8_t max_track;
175 uint8_t max_head;
176 const unsigned char *str;
177} fd_format_t;
178
179static fd_format_t fd_formats[] = {
180 /* First entry is default format */
181 /* 1.44 MB 3"1/2 floppy disks */
182 { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, "1.44 MB 3\"1/2", },
183 { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, "1.6 MB 3\"1/2", },
184 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, "1.68 MB 3\"1/2", },
185 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, "1.72 MB 3\"1/2", },
186 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, "1.74 MB 3\"1/2", },
187 { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, "1.76 MB 3\"1/2", },
188 { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, "1.84 MB 3\"1/2", },
189 { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, "1.92 MB 3\"1/2", },
190 /* 2.88 MB 3"1/2 floppy disks */
191 { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, "2.88 MB 3\"1/2", },
192 { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, "3.12 MB 3\"1/2", },
193 { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, "3.2 MB 3\"1/2", },
194 { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, "3.52 MB 3\"1/2", },
195 { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, "3.84 MB 3\"1/2", },
196 /* 720 kB 3"1/2 floppy disks */
197 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, "720 kB 3\"1/2", },
198 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, "800 kB 3\"1/2", },
199 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, "820 kB 3\"1/2", },
200 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, "830 kB 3\"1/2", },
201 { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, "1.04 MB 3\"1/2", },
202 { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, "1.12 MB 3\"1/2", },
203 /* 1.2 MB 5"1/4 floppy disks */
204 { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, "1.2 kB 5\"1/4", },
205 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, "1.44 MB 5\"1/4", },
206 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, "1.48 MB 5\"1/4", },
207 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, "1.49 MB 5\"1/4", },
208 { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, "1.6 MB 5\"1/4", },
209 /* 720 kB 5"1/4 floppy disks */
210 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, "720 kB 5\"1/4", },
211 { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, "880 kB 5\"1/4", },
212 /* 360 kB 5"1/4 floppy disks */
213 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, "360 kB 5\"1/4", },
214 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, "180 kB 5\"1/4", },
215 { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, "410 kB 5\"1/4", },
216 { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, "420 kB 5\"1/4", },
217 /* 320 kB 5"1/4 floppy disks */
218 { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, "320 kB 5\"1/4", },
219 { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, "160 kB 5\"1/4", },
220 /* 360 kB must match 5"1/4 better than 3"1/2... */
221 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 0, "360 kB 3\"1/2", },
222 /* end */
223 { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, -1, -1, 0, NULL, },
224};
225
8977f3c1 226/* Revalidate a disk drive after a disk change */
caed8802 227static void fd_revalidate (fdrive_t *drv)
8977f3c1 228{
a541f297
FB		 229 fd_format_t *parse;
230 int64_t nb_sectors, size;
231 int i, first_match, match;
baca51fa 232 int nb_heads, max_track, last_sect, ro;
8977f3c1
FB		 233
234 FLOPPY_DPRINTF("revalidate\n");
baca51fa 235 drv->drflags &= ~FDRIVE_REVALIDATE;
a541f297 236 if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
baca51fa 237 ro = bdrv_is_read_only(drv->bs);
a541f297 238 bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
baca51fa 239 if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
ed5fd2cc
FB		 240 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
241 nb_heads - 1, max_track, last_sect);
a541f297
FB		 242 } else {
243 bdrv_get_geometry(drv->bs, &nb_sectors);
244 match = -1;
245 first_match = -1;
246 for (i = 0;; i++) {
247 parse = &fd_formats[i];
248 if (parse->drive == FDRIVE_DRV_NONE)
249 break;
250 if (drv->drive == parse->drive ||
251 drv->drive == FDRIVE_DRV_NONE) {
252 size = (parse->max_head + 1) * parse->max_track *
253 parse->last_sect;
254 if (nb_sectors == size) {
255 match = i;
256 break;
257 }
258 if (first_match == -1)
259 first_match = i;
260 }
261 }
262 if (match == -1) {
263 if (first_match == -1)
264 match = 1;
265 else
266 match = first_match;
267 parse = &fd_formats[match];
268 }
269 nb_heads = parse->max_head + 1;
270 max_track = parse->max_track;
271 last_sect = parse->last_sect;
272 drv->drive = parse->drive;
ed5fd2cc
FB		 273 FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
274 nb_heads, max_track, last_sect, ro ? "ro" : "rw");
a541f297 275 }
baca51fa
FB		 276 if (nb_heads == 1) {
277 drv->flags &= ~FDISK_DBL_SIDES;
278 } else {
279 drv->flags |= FDISK_DBL_SIDES;
280 }
281 drv->max_track = max_track;
282 drv->last_sect = last_sect;
baca51fa 283 drv->ro = ro;
8977f3c1 284 } else {
ed5fd2cc 285 FLOPPY_DPRINTF("No disk in drive\n");
baca51fa
FB		 286 drv->last_sect = 0;
287 drv->max_track = 0;
288 drv->flags &= ~FDISK_DBL_SIDES;
8977f3c1 289 }
baca51fa 290 drv->drflags |= FDRIVE_REVALIDATE;
caed8802
FB		 291}
292
8977f3c1
FB		 293/* Motor control */
294static void fd_start (fdrive_t *drv)
295{
baca51fa 296 drv->drflags |= FDRIVE_MOTOR_ON;
8977f3c1
FB		 297}
298
299static void fd_stop (fdrive_t *drv)
300{
baca51fa 301 drv->drflags &= ~FDRIVE_MOTOR_ON;
8977f3c1
FB		 302}
303
304/* Re-initialise a drives (motor off, repositioned) */
305static void fd_reset (fdrive_t *drv)
306{
307 fd_stop(drv);
308 fd_recalibrate(drv);
309}
310
311/********************************************************/
312/* Intel 82078 floppy disk controler emulation */
313
baca51fa
FB		 314static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq);
315static void fdctrl_reset_fifo (fdctrl_t *fdctrl);
f9e92e97 316static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size);
baca51fa 317static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status);
ed5fd2cc 318static void fdctrl_result_timer(void *opaque);
baca51fa
FB		 319
320static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl);
321static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl);
322static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value);
323static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl);
324static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value);
325static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl);
326static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value);
327static uint32_t fdctrl_read_data (fdctrl_t *fdctrl);
328static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value);
329static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl);
8977f3c1
FB		 330
331enum {
ed5fd2cc 332 FD_CTRL_ACTIVE = 0x01, /* XXX: suppress that */
8977f3c1 333 FD_CTRL_RESET = 0x02,
ed5fd2cc
FB		 334 FD_CTRL_SLEEP = 0x04, /* XXX: suppress that */
335 FD_CTRL_BUSY = 0x08, /* dma transfer in progress */
8977f3c1
FB		 336 FD_CTRL_INTR = 0x10,
337};
338
339enum {
340 FD_DIR_WRITE = 0,
341 FD_DIR_READ = 1,
342 FD_DIR_SCANE = 2,
343 FD_DIR_SCANL = 3,
344 FD_DIR_SCANH = 4,
345};
346
347enum {
348 FD_STATE_CMD = 0x00,
349 FD_STATE_STATUS = 0x01,
350 FD_STATE_DATA = 0x02,
351 FD_STATE_STATE = 0x03,
352 FD_STATE_MULTI = 0x10,
353 FD_STATE_SEEK = 0x20,
baca51fa 354 FD_STATE_FORMAT = 0x40,
8977f3c1
FB		 355};
356
357#define FD_STATE(state) ((state) & FD_STATE_STATE)
baca51fa
FB		 358#define FD_SET_STATE(state, new_state) \
359do { (state) = ((state) & ~FD_STATE_STATE) | (new_state); } while (0)
8977f3c1
FB		 360#define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
361#define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
baca51fa 362#define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
8977f3c1 363
baca51fa
FB		 364struct fdctrl_t {
365 fdctrl_t *fdctrl;
8977f3c1
FB		 366 /* Controler's identification */
367 uint8_t version;
368 /* HW */
369 int irq_lvl;
370 int dma_chann;
baca51fa 371 uint32_t io_base;
8977f3c1 372 /* Controler state */
ed5fd2cc 373 QEMUTimer *result_timer;
8977f3c1
FB		 374 uint8_t state;
375 uint8_t dma_en;
376 uint8_t cur_drv;
377 uint8_t bootsel;
378 /* Command FIFO */
379 uint8_t fifo[FD_SECTOR_LEN];
380 uint32_t data_pos;
381 uint32_t data_len;
382 uint8_t data_state;
383 uint8_t data_dir;
384 uint8_t int_status;
385 /* States kept only to be returned back */
386 /* Timers state */
387 uint8_t timer0;
388 uint8_t timer1;
389 /* precompensation */
390 uint8_t precomp_trk;
391 uint8_t config;
392 uint8_t lock;
393 /* Power down config (also with status regB access mode */
394 uint8_t pwrd;
395 /* Floppy drives */
396 fdrive_t drives[2];
baca51fa
FB		 397};
398
399static uint32_t fdctrl_read (void *opaque, uint32_t reg)
400{
401 fdctrl_t *fdctrl = opaque;
402 uint32_t retval;
403
a541f297
FB		 404 switch (reg & 0x07) {
405 case 0x01:
baca51fa 406 retval = fdctrl_read_statusB(fdctrl);
a541f297
FB		 407 break;
408 case 0x02:
baca51fa 409 retval = fdctrl_read_dor(fdctrl);
a541f297
FB		 410 break;
411 case 0x03:
baca51fa 412 retval = fdctrl_read_tape(fdctrl);
a541f297
FB		 413 break;
414 case 0x04:
baca51fa 415 retval = fdctrl_read_main_status(fdctrl);
a541f297
FB		 416 break;
417 case 0x05:
baca51fa 418 retval = fdctrl_read_data(fdctrl);
a541f297
FB		 419 break;
420 case 0x07:
baca51fa 421 retval = fdctrl_read_dir(fdctrl);
a541f297
FB		 422 break;
423 default:
baca51fa 424 retval = (uint32_t)(-1);
a541f297
FB		 425 break;
426 }
ed5fd2cc 427 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
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
ed5fd2cc
FB		 436 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
437
a541f297
FB		 438 switch (reg & 0x07) {
439 case 0x02:
baca51fa 440 fdctrl_write_dor(fdctrl, value);
a541f297
FB		 441 break;
442 case 0x03:
baca51fa 443 fdctrl_write_tape(fdctrl, value);
a541f297
FB		 444 break;
445 case 0x04:
baca51fa 446 fdctrl_write_rate(fdctrl, value);
a541f297
FB		 447 break;
448 case 0x05:
baca51fa 449 fdctrl_write_data(fdctrl, value);
a541f297
FB		 450 break;
451 default:
452 break;
453 }
baca51fa
FB		 454}
455
456static void fd_change_cb (void *opaque)
457{
458 fdrive_t *drv = opaque;
8977f3c1 459
baca51fa 460 FLOPPY_DPRINTF("disk change\n");
baca51fa
FB		 461 fd_revalidate(drv);
462#if 0
463 fd_recalibrate(drv);
464 fdctrl_reset_fifo(drv->fdctrl);
465 fdctrl_raise_irq(drv->fdctrl, 0x20);
466#endif
467}
8977f3c1 468
baca51fa
FB		 469fdctrl_t *fdctrl_init (int irq_lvl, int dma_chann, int mem_mapped,
470 uint32_t io_base,
471 BlockDriverState **fds)
8977f3c1 472{
baca51fa 473 fdctrl_t *fdctrl;
8977f3c1
FB		 474// int io_mem;
475 int i;
476
477 FLOPPY_DPRINTF("init controler\n");
baca51fa
FB		 478 fdctrl = qemu_mallocz(sizeof(fdctrl_t));
479 if (!fdctrl)
480 return NULL;
ed5fd2cc
FB		 481 fdctrl->result_timer = qemu_new_timer(vm_clock,
482 fdctrl_result_timer, fdctrl);
483
baca51fa
FB		 484 fdctrl->version = 0x90; /* Intel 82078 controler */
485 fdctrl->irq_lvl = irq_lvl;
486 fdctrl->dma_chann = dma_chann;
487 fdctrl->io_base = io_base;
a541f297 488 fdctrl->config = 0x60; /* Implicit seek, polling & FIFO enabled */
baca51fa
FB		 489 if (fdctrl->dma_chann != -1) {
490 fdctrl->dma_en = 1;
491 DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl);
8977f3c1 492 } else {
baca51fa 493 fdctrl->dma_en = 0;
8977f3c1 494 }
baca51fa
FB		 495 for (i = 0; i < 2; i++) {
496 fd_init(&fdctrl->drives[i], fds[i]);
497 if (fds[i]) {
498 bdrv_set_change_cb(fds[i],
499 &fd_change_cb, &fdctrl->drives[i]);
500 }
caed8802 501 }
baca51fa
FB		 502 fdctrl_reset(fdctrl, 0);
503 fdctrl->state = FD_CTRL_ACTIVE;
8977f3c1
FB		 504 if (mem_mapped) {
505 FLOPPY_ERROR("memory mapped floppy not supported by now !\n");
506#if 0
507 io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write);
508 cpu_register_physical_memory(base, 0x08, io_mem);
509#endif
510 } else {
baca51fa
FB		 511 register_ioport_read(io_base + 0x01, 5, 1, &fdctrl_read, fdctrl);
512 register_ioport_read(io_base + 0x07, 1, 1, &fdctrl_read, fdctrl);
513 register_ioport_write(io_base + 0x01, 5, 1, &fdctrl_write, fdctrl);
514 register_ioport_write(io_base + 0x07, 1, 1, &fdctrl_write, fdctrl);
8977f3c1 515 }
a541f297 516 for (i = 0; i < 2; i++) {
baca51fa 517 fd_revalidate(&fdctrl->drives[i]);
8977f3c1 518 }
a541f297 519
baca51fa 520 return fdctrl;
caed8802 521}
8977f3c1 522
baca51fa
FB		 523/* XXX: may change if moved to bdrv */
524int fdctrl_get_drive_type(fdctrl_t *fdctrl, int drive_num)
caed8802 525{
baca51fa 526 return fdctrl->drives[drive_num].drive;
8977f3c1
FB		 527}
528
529/* Change IRQ state */
baca51fa 530static void fdctrl_reset_irq (fdctrl_t *fdctrl)
8977f3c1 531{
ed5fd2cc
FB		 532 FLOPPY_DPRINTF("Reset interrupt\n");
533 pic_set_irq(fdctrl->irq_lvl, 0);
534 fdctrl->state &= ~FD_CTRL_INTR;
8977f3c1
FB		 535}
536
baca51fa 537static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status)
8977f3c1 538{
baca51fa
FB		 539 if (~(fdctrl->state & FD_CTRL_INTR)) {
540 pic_set_irq(fdctrl->irq_lvl, 1);
541 fdctrl->state |= FD_CTRL_INTR;
8977f3c1
FB		 542 }
543 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", status);
baca51fa 544 fdctrl->int_status = status;
8977f3c1
FB		 545}
546
547/* Reset controler */
baca51fa 548static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq)
8977f3c1
FB		 549{
550 int i;
551
552 FLOPPY_DPRINTF("reset controler\n");
baca51fa 553 fdctrl_reset_irq(fdctrl);
8977f3c1 554 /* Initialise controler */
baca51fa 555 fdctrl->cur_drv = 0;
8977f3c1 556 /* FIFO state */
baca51fa
FB		 557 fdctrl->data_pos = 0;
558 fdctrl->data_len = 0;
559 fdctrl->data_state = FD_STATE_CMD;
560 fdctrl->data_dir = FD_DIR_WRITE;
8977f3c1 561 for (i = 0; i < MAX_FD; i++)
baca51fa
FB		 562 fd_reset(&fdctrl->drives[i]);
563 fdctrl_reset_fifo(fdctrl);
8977f3c1 564 if (do_irq)
ed5fd2cc 565 fdctrl_raise_irq(fdctrl, 0xc0);
baca51fa
FB		 566}
567
568static inline fdrive_t *drv0 (fdctrl_t *fdctrl)
569{
570 return &fdctrl->drives[fdctrl->bootsel];
571}
572
573static inline fdrive_t *drv1 (fdctrl_t *fdctrl)
574{
575 return &fdctrl->drives[1 - fdctrl->bootsel];
576}
577
578static fdrive_t *get_cur_drv (fdctrl_t *fdctrl)
579{
580 return fdctrl->cur_drv == 0 ? drv0(fdctrl) : drv1(fdctrl);
8977f3c1
FB		 581}
582
583/* Status B register : 0x01 (read-only) */
baca51fa 584static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl)
8977f3c1 585{
8977f3c1 586 FLOPPY_DPRINTF("status register: 0x00\n");
8977f3c1
FB		 587 return 0;
588}
589
590/* Digital output register : 0x02 */
baca51fa 591static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl)
8977f3c1 592{
8977f3c1
FB		 593 uint32_t retval = 0;
594
8977f3c1 595 /* Drive motors state indicators */
baca51fa
FB		 596 if (drv0(fdctrl)->drflags & FDRIVE_MOTOR_ON)
597 retval |= 1 << 5;
598 if (drv1(fdctrl)->drflags & FDRIVE_MOTOR_ON)
599 retval |= 1 << 4;
8977f3c1 600 /* DMA enable */
baca51fa 601 retval |= fdctrl->dma_en << 3;
8977f3c1 602 /* Reset indicator */
baca51fa 603 retval |= (fdctrl->state & FD_CTRL_RESET) == 0 ? 0x04 : 0;
8977f3c1 604 /* Selected drive */
baca51fa 605 retval |= fdctrl->cur_drv;
8977f3c1
FB		 606 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
607
608 return retval;
609}
610
baca51fa 611static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value)
8977f3c1 612{
8977f3c1 613 /* Reset mode */
baca51fa 614 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1
FB		 615 if (!(value & 0x04)) {
616 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
617 return;
618 }
619 }
620 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
621 /* Drive motors state indicators */
622 if (value & 0x20)
baca51fa 623 fd_start(drv1(fdctrl));
8977f3c1 624 else
baca51fa 625 fd_stop(drv1(fdctrl));
8977f3c1 626 if (value & 0x10)
baca51fa 627 fd_start(drv0(fdctrl));
8977f3c1 628 else
baca51fa 629 fd_stop(drv0(fdctrl));
8977f3c1
FB		 630 /* DMA enable */
631#if 0
baca51fa
FB		 632 if (fdctrl->dma_chann != -1)
633 fdctrl->dma_en = 1 - ((value >> 3) & 1);
8977f3c1
FB		 634#endif
635 /* Reset */
636 if (!(value & 0x04)) {
baca51fa 637 if (!(fdctrl->state & FD_CTRL_RESET)) {
8977f3c1 638 FLOPPY_DPRINTF("controler enter RESET state\n");
baca51fa 639 fdctrl->state |= FD_CTRL_RESET;
8977f3c1
FB		 640 }
641 } else {
baca51fa 642 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1 643 FLOPPY_DPRINTF("controler out of RESET state\n");
fb6cf1d0 644 fdctrl_reset(fdctrl, 1);
baca51fa 645 fdctrl->state &= ~(FD_CTRL_RESET | FD_CTRL_SLEEP);
8977f3c1
FB		 646 }
647 }
648 /* Selected drive */
baca51fa 649 fdctrl->cur_drv = value & 1;
8977f3c1
FB		 650}
651
652/* Tape drive register : 0x03 */
baca51fa 653static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl)
8977f3c1
FB		 654{
655 uint32_t retval = 0;
656
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{
8977f3c1 667 /* Reset mode */
baca51fa 668 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1
FB		 669 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
670 return;
671 }
672 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
673 /* Disk boot selection indicator */
baca51fa 674 fdctrl->bootsel = (value >> 2) & 1;
8977f3c1
FB		 675 /* Tape indicators: never allow */
676}
677
678/* Main status register : 0x04 (read) */
baca51fa 679static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl)
8977f3c1
FB		 680{
681 uint32_t retval = 0;
682
baca51fa
FB		 683 fdctrl->state &= ~(FD_CTRL_SLEEP | FD_CTRL_RESET);
684 if (!(fdctrl->state & FD_CTRL_BUSY)) {
8977f3c1
FB		 685 /* Data transfer allowed */
686 retval |= 0x80;
687 /* Data transfer direction indicator */
baca51fa 688 if (fdctrl->data_dir == FD_DIR_READ)
8977f3c1
FB		 689 retval |= 0x40;
690 }
691 /* Should handle 0x20 for SPECIFY command */
692 /* Command busy indicator */
baca51fa
FB		 693 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA ||
694 FD_STATE(fdctrl->data_state) == FD_STATE_STATUS)
8977f3c1
FB		 695 retval |= 0x10;
696 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
697
698 return retval;
699}
700
701/* Data select rate register : 0x04 (write) */
baca51fa 702static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value)
8977f3c1 703{
8977f3c1 704 /* Reset mode */
baca51fa 705 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1
FB		 706 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
707 return;
708 }
8977f3c1
FB		 709 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
710 /* Reset: autoclear */
711 if (value & 0x80) {
baca51fa
FB		 712 fdctrl->state |= FD_CTRL_RESET;
713 fdctrl_reset(fdctrl, 1);
714 fdctrl->state &= ~FD_CTRL_RESET;
8977f3c1
FB		 715 }
716 if (value & 0x40) {
baca51fa
FB		 717 fdctrl->state |= FD_CTRL_SLEEP;
718 fdctrl_reset(fdctrl, 1);
8977f3c1
FB		 719 }
720// fdctrl.precomp = (value >> 2) & 0x07;
721}
722
723/* Digital input register : 0x07 (read-only) */
baca51fa 724static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl)
8977f3c1 725{
8977f3c1
FB		 726 uint32_t retval = 0;
727
baca51fa
FB		 728 if (drv0(fdctrl)->drflags & FDRIVE_REVALIDATE ||
729 drv1(fdctrl)->drflags & FDRIVE_REVALIDATE)
8977f3c1
FB		 730 retval |= 0x80;
731 if (retval != 0)
baca51fa
FB		 732 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
733 drv0(fdctrl)->drflags &= ~FDRIVE_REVALIDATE;
734 drv1(fdctrl)->drflags &= ~FDRIVE_REVALIDATE;
8977f3c1
FB		 735
736 return retval;
737}
738
739/* FIFO state control */
baca51fa 740static void fdctrl_reset_fifo (fdctrl_t *fdctrl)
8977f3c1 741{
baca51fa
FB		 742 fdctrl->data_dir = FD_DIR_WRITE;
743 fdctrl->data_pos = 0;
744 FD_SET_STATE(fdctrl->data_state, FD_STATE_CMD);
8977f3c1
FB		 745}
746
747/* Set FIFO status for the host to read */
baca51fa 748static void fdctrl_set_fifo (fdctrl_t *fdctrl, int fifo_len, int do_irq)
8977f3c1 749{
baca51fa
FB		 750 fdctrl->data_dir = FD_DIR_READ;
751 fdctrl->data_len = fifo_len;
752 fdctrl->data_pos = 0;
753 FD_SET_STATE(fdctrl->data_state, FD_STATE_STATUS);
8977f3c1 754 if (do_irq)
baca51fa 755 fdctrl_raise_irq(fdctrl, 0x00);
8977f3c1
FB		 756}
757
758/* Set an error: unimplemented/unknown command */
baca51fa 759static void fdctrl_unimplemented (fdctrl_t *fdctrl)
8977f3c1
FB		 760{
761#if 0
baca51fa
FB		 762 fdrive_t *cur_drv;
763
764 cur_drv = get_cur_drv(fdctrl);
765 fdctrl->fifo[0] = 0x60 | (cur_drv->head << 1) | fdctrl->cur_drv;
766 fdctrl->fifo[1] = 0x00;
767 fdctrl->fifo[2] = 0x00;
768 fdctrl_set_fifo(fdctrl, 3, 1);
8977f3c1 769#else
baca51fa
FB		 770 // fdctrl_reset_fifo(fdctrl);
771 fdctrl->fifo[0] = 0x80;
772 fdctrl_set_fifo(fdctrl, 1, 0);
8977f3c1
FB		 773#endif
774}
775
776/* Callback for transfer end (stop or abort) */
baca51fa
FB		 777static void fdctrl_stop_transfer (fdctrl_t *fdctrl, uint8_t status0,
778 uint8_t status1, uint8_t status2)
8977f3c1 779{
baca51fa 780 fdrive_t *cur_drv;
8977f3c1 781
baca51fa 782 cur_drv = get_cur_drv(fdctrl);
8977f3c1
FB		 783 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
784 status0, status1, status2,
baca51fa
FB		 785 status0 | (cur_drv->head << 1) | fdctrl->cur_drv);
786 fdctrl->fifo[0] = status0 | (cur_drv->head << 1) | fdctrl->cur_drv;
787 fdctrl->fifo[1] = status1;
788 fdctrl->fifo[2] = status2;
789 fdctrl->fifo[3] = cur_drv->track;
790 fdctrl->fifo[4] = cur_drv->head;
791 fdctrl->fifo[5] = cur_drv->sect;
792 fdctrl->fifo[6] = FD_SECTOR_SC;
793 fdctrl->data_dir = FD_DIR_READ;
ed5fd2cc 794 if (fdctrl->state & FD_CTRL_BUSY) {
baca51fa 795 DMA_release_DREQ(fdctrl->dma_chann);
ed5fd2cc
FB		 796 fdctrl->state &= ~FD_CTRL_BUSY;
797 }
baca51fa 798 fdctrl_set_fifo(fdctrl, 7, 1);
8977f3c1
FB		 799}
800
801/* Prepare a data transfer (either DMA or FIFO) */
baca51fa 802static void fdctrl_start_transfer (fdctrl_t *fdctrl, int direction)
8977f3c1 803{
baca51fa 804 fdrive_t *cur_drv;
8977f3c1
FB		 805 uint8_t kh, kt, ks;
806 int did_seek;
807
baca51fa
FB		 808 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
809 cur_drv = get_cur_drv(fdctrl);
810 kt = fdctrl->fifo[2];
811 kh = fdctrl->fifo[3];
812 ks = fdctrl->fifo[4];
8977f3c1 813 FLOPPY_DPRINTF("Start tranfert at %d %d %02x %02x (%d)\n",
baca51fa 814 fdctrl->cur_drv, kh, kt, ks,
8977f3c1
FB		 815 _fd_sector(kh, kt, ks, cur_drv->last_sect));
816 did_seek = 0;
baca51fa 817 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
8977f3c1
FB		 818 case 2:
819 /* sect too big */
baca51fa
FB		 820 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
821 fdctrl->fifo[3] = kt;
822 fdctrl->fifo[4] = kh;
823 fdctrl->fifo[5] = ks;
8977f3c1
FB		 824 return;
825 case 3:
826 /* track too big */
baca51fa
FB		 827 fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
828 fdctrl->fifo[3] = kt;
829 fdctrl->fifo[4] = kh;
830 fdctrl->fifo[5] = ks;
8977f3c1
FB		 831 return;
832 case 4:
833 /* No seek enabled */
baca51fa
FB		 834 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
835 fdctrl->fifo[3] = kt;
836 fdctrl->fifo[4] = kh;
837 fdctrl->fifo[5] = ks;
8977f3c1
FB		 838 return;
839 case 1:
840 did_seek = 1;
841 break;
842 default:
843 break;
844 }
845 /* Set the FIFO state */
baca51fa
FB		 846 fdctrl->data_dir = direction;
847 fdctrl->data_pos = 0;
848 FD_SET_STATE(fdctrl->data_state, FD_STATE_DATA); /* FIFO ready for data */
849 if (fdctrl->fifo[0] & 0x80)
850 fdctrl->data_state |= FD_STATE_MULTI;
851 else
852 fdctrl->data_state &= ~FD_STATE_MULTI;
8977f3c1 853 if (did_seek)
baca51fa
FB		 854 fdctrl->data_state |= FD_STATE_SEEK;
855 else
856 fdctrl->data_state &= ~FD_STATE_SEEK;
857 if (fdctrl->fifo[5] == 00) {
858 fdctrl->data_len = fdctrl->fifo[8];
859 } else {
860 int tmp;
861 fdctrl->data_len = 128 << fdctrl->fifo[5];
862 tmp = (cur_drv->last_sect - ks + 1);
863 if (fdctrl->fifo[0] & 0x80)
864 tmp += cur_drv->last_sect;
865 fdctrl->data_len *= tmp;
866 }
867 if (fdctrl->dma_en) {
8977f3c1
FB		 868 int dma_mode;
869 /* DMA transfer are enabled. Check if DMA channel is well programmed */
baca51fa 870 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
8977f3c1 871 dma_mode = (dma_mode >> 2) & 3;
baca51fa
FB		 872 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
873 dma_mode, direction,
874 (128 << fdctrl->fifo[5]) *
875 (cur_drv->last_sect - ks + 1), fdctrl->data_len);
8977f3c1
FB		 876 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
877 direction == FD_DIR_SCANH) && dma_mode == 0) ||
878 (direction == FD_DIR_WRITE && dma_mode == 2) ||
879 (direction == FD_DIR_READ && dma_mode == 1)) {
880 /* No access is allowed until DMA transfer has completed */
baca51fa 881 fdctrl->state |= FD_CTRL_BUSY;
8977f3c1
FB		 882 /* Now, we just have to wait for the DMA controler to
883 * recall us...
884 */
baca51fa
FB		 885 DMA_hold_DREQ(fdctrl->dma_chann);
886 DMA_schedule(fdctrl->dma_chann);
8977f3c1 887 return;
baca51fa
FB		 888 } else {
889 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
8977f3c1
FB		 890 }
891 }
892 FLOPPY_DPRINTF("start non-DMA transfer\n");
893 /* IO based transfer: calculate len */
baca51fa 894 fdctrl_raise_irq(fdctrl, 0x00);
8977f3c1
FB		 895
896 return;
897}
898
899/* Prepare a transfer of deleted data */
baca51fa 900static void fdctrl_start_transfer_del (fdctrl_t *fdctrl, int direction)
8977f3c1
FB		 901{
902 /* We don't handle deleted data,
903 * so we don't return *ANYTHING*
904 */
baca51fa 905 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
8977f3c1
FB		 906}
907
908/* handlers for DMA transfers */
f9e92e97 909static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size)
8977f3c1 910{
baca51fa
FB		 911 fdctrl_t *fdctrl;
912 fdrive_t *cur_drv;
913 int len, start_pos, rel_pos;
8977f3c1
FB		 914 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
915
baca51fa 916 fdctrl = opaque;
baca51fa 917 if (!(fdctrl->state & FD_CTRL_BUSY)) {
8977f3c1
FB		 918 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
919 return 0;
920 }
baca51fa
FB		 921 cur_drv = get_cur_drv(fdctrl);
922 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
923 fdctrl->data_dir == FD_DIR_SCANH)
8977f3c1 924 status2 = 0x04;
baca51fa
FB		 925 if (size > fdctrl->data_len)
926 size = fdctrl->data_len;
69e5bc90 927 if (cur_drv->bs == NULL) {
baca51fa
FB		 928 if (fdctrl->data_dir == FD_DIR_WRITE)
929 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
930 else
931 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
932 len = 0;
69e5bc90
FB		 933 goto transfer_error;
934 }
baca51fa
FB		 935 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
936 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < size;) {
937 len = size - fdctrl->data_pos;
938 if (len + rel_pos > FD_SECTOR_LEN)
939 len = FD_SECTOR_LEN - rel_pos;
940 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x %02x "
941 "(%d-0x%08x 0x%08x)\n", len, size, fdctrl->data_pos,
942 fdctrl->data_len, fdctrl->cur_drv, cur_drv->head,
943 cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
944 fd_sector(cur_drv) * 512, addr);
945 if (fdctrl->data_dir != FD_DIR_WRITE ||
946 len < FD_SECTOR_LEN || rel_pos != 0) {
947 /* READ & SCAN commands and realign to a sector for WRITE */
948 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
949 fdctrl->fifo, 1) < 0) {
8977f3c1
FB		 950 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
951 fd_sector(cur_drv));
952 /* Sure, image size is too small... */
baca51fa 953 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
8977f3c1 954 }
8977f3c1 955 }
baca51fa
FB		 956 switch (fdctrl->data_dir) {
957 case FD_DIR_READ:
958 /* READ commands */
959 cpu_physical_memory_write(addr + fdctrl->data_pos,
960 fdctrl->fifo + rel_pos, len);
961 break;
962 case FD_DIR_WRITE:
963 /* WRITE commands */
964 cpu_physical_memory_read(addr + fdctrl->data_pos,
965 fdctrl->fifo + rel_pos, len);
966 if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
967 fdctrl->fifo, 1) < 0) {
968 FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv));
969 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
970 goto transfer_error;
f9e92e97 971 }
baca51fa
FB		 972 break;
973 default:
974 /* SCAN commands */
975 {
976 uint8_t tmpbuf[FD_SECTOR_LEN];
977 int ret;
978 cpu_physical_memory_read(addr + fdctrl->data_pos,
979 tmpbuf, len);
980 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
8977f3c1
FB		 981 if (ret == 0) {
982 status2 = 0x08;
983 goto end_transfer;
984 }
baca51fa
FB		 985 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
986 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
8977f3c1
FB		 987 status2 = 0x00;
988 goto end_transfer;
989 }
990 }
baca51fa 991 break;
8977f3c1 992 }
baca51fa
FB		 993 fdctrl->data_pos += len;
994 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
995 if (rel_pos == 0) {
8977f3c1 996 /* Seek to next sector */
baca51fa
FB		 997 cur_drv->sect++;
998 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
999 cur_drv->head, cur_drv->track, cur_drv->sect,
1000 fd_sector(cur_drv),
1001 fdctrl->data_pos - size);
1002 if (cur_drv->sect > cur_drv->last_sect) {
1003 cur_drv->sect = 1;
1004 if (FD_MULTI_TRACK(fdctrl->data_state)) {
1005 if (cur_drv->head == 0 &&
1006 (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
8977f3c1
FB		 1007 cur_drv->head = 1;
1008 } else {
8977f3c1 1009 cur_drv->head = 0;
baca51fa
FB		 1010 cur_drv->track++;
1011 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1012 break;
8977f3c1
FB		 1013 }
1014 } else {
baca51fa
FB		 1015 cur_drv->track++;
1016 break;
1017 }
1018 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1019 cur_drv->head, cur_drv->track,
1020 cur_drv->sect, fd_sector(cur_drv));
8977f3c1
FB		 1021 }
1022 }
1023 }
1024end_transfer:
baca51fa
FB		 1025 len = fdctrl->data_pos - start_pos;
1026 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1027 fdctrl->data_pos, len, fdctrl->data_len);
1028 if (fdctrl->data_dir == FD_DIR_SCANE ||
1029 fdctrl->data_dir == FD_DIR_SCANL ||
1030 fdctrl->data_dir == FD_DIR_SCANH)
8977f3c1 1031 status2 = 0x08;
baca51fa 1032 if (FD_DID_SEEK(fdctrl->data_state))
8977f3c1 1033 status0 |= 0x20;
baca51fa
FB		 1034 fdctrl->data_len -= len;
1035 // if (fdctrl->data_len == 0)
1036 fdctrl_stop_transfer(fdctrl, status0, status1, status2);
8977f3c1
FB		 1037transfer_error:
1038
baca51fa 1039 return len;
8977f3c1
FB		 1040}
1041
8977f3c1 1042/* Data register : 0x05 */
baca51fa 1043static uint32_t fdctrl_read_data (fdctrl_t *fdctrl)
8977f3c1 1044{
baca51fa 1045 fdrive_t *cur_drv;
8977f3c1
FB		 1046 uint32_t retval = 0;
1047 int pos, len;
1048
baca51fa
FB		 1049 cur_drv = get_cur_drv(fdctrl);
1050 fdctrl->state &= ~FD_CTRL_SLEEP;
1051 if (FD_STATE(fdctrl->data_state) == FD_STATE_CMD) {
8977f3c1
FB		 1052 FLOPPY_ERROR("can't read data in CMD state\n");
1053 return 0;
1054 }
baca51fa
FB		 1055 pos = fdctrl->data_pos;
1056 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
8977f3c1
FB		 1057 pos %= FD_SECTOR_LEN;
1058 if (pos == 0) {
baca51fa 1059 len = fdctrl->data_len - fdctrl->data_pos;
8977f3c1
FB		 1060 if (len > FD_SECTOR_LEN)
1061 len = FD_SECTOR_LEN;
1062 bdrv_read(cur_drv->bs, fd_sector(cur_drv),
baca51fa 1063 fdctrl->fifo, len);
8977f3c1
FB		 1064 }
1065 }
baca51fa
FB		 1066 retval = fdctrl->fifo[pos];
1067 if (++fdctrl->data_pos == fdctrl->data_len) {
1068 fdctrl->data_pos = 0;
8977f3c1
FB		 1069 /* Switch from transfert mode to status mode
1070 * then from status mode to command mode
1071 */
ed5fd2cc 1072 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
baca51fa 1073 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
ed5fd2cc 1074 } else {
baca51fa 1075 fdctrl_reset_fifo(fdctrl);
ed5fd2cc
FB		 1076 fdctrl_reset_irq(fdctrl);
1077 }
8977f3c1
FB		 1078 }
1079 FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1080
1081 return retval;
1082}
1083
baca51fa 1084static void fdctrl_format_sector (fdctrl_t *fdctrl)
8977f3c1 1085{
baca51fa
FB		 1086 fdrive_t *cur_drv;
1087 uint8_t kh, kt, ks;
1088 int did_seek;
8977f3c1 1089
baca51fa
FB		 1090 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1091 cur_drv = get_cur_drv(fdctrl);
1092 kt = fdctrl->fifo[6];
1093 kh = fdctrl->fifo[7];
1094 ks = fdctrl->fifo[8];
1095 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1096 fdctrl->cur_drv, kh, kt, ks,
1097 _fd_sector(kh, kt, ks, cur_drv->last_sect));
1098 did_seek = 0;
1099 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
1100 case 2:
1101 /* sect too big */
1102 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
1103 fdctrl->fifo[3] = kt;
1104 fdctrl->fifo[4] = kh;
1105 fdctrl->fifo[5] = ks;
1106 return;
1107 case 3:
1108 /* track too big */
1109 fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
1110 fdctrl->fifo[3] = kt;
1111 fdctrl->fifo[4] = kh;
1112 fdctrl->fifo[5] = ks;
1113 return;
1114 case 4:
1115 /* No seek enabled */
1116 fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
1117 fdctrl->fifo[3] = kt;
1118 fdctrl->fifo[4] = kh;
1119 fdctrl->fifo[5] = ks;
1120 return;
1121 case 1:
1122 did_seek = 1;
1123 fdctrl->data_state |= FD_STATE_SEEK;
1124 break;
1125 default:
1126 break;
1127 }
1128 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1129 if (cur_drv->bs == NULL ||
1130 bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1131 FLOPPY_ERROR("formating sector %d\n", fd_sector(cur_drv));
1132 fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
1133 } else {
1134 if (cur_drv->sect == cur_drv->last_sect) {
1135 fdctrl->data_state &= ~FD_STATE_FORMAT;
1136 /* Last sector done */
1137 if (FD_DID_SEEK(fdctrl->data_state))
1138 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
1139 else
1140 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1141 } else {
1142 /* More to do */
1143 fdctrl->data_pos = 0;
1144 fdctrl->data_len = 4;
1145 }
1146 }
1147}
1148
1149static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
1150{
1151 fdrive_t *cur_drv;
1152
baca51fa 1153 cur_drv = get_cur_drv(fdctrl);
8977f3c1 1154 /* Reset mode */
baca51fa 1155 if (fdctrl->state & FD_CTRL_RESET) {
8977f3c1
FB		 1156 FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
1157 return;
1158 }
baca51fa
FB		 1159 fdctrl->state &= ~FD_CTRL_SLEEP;
1160 if (FD_STATE(fdctrl->data_state) == FD_STATE_STATUS) {
8977f3c1
FB		 1161 FLOPPY_ERROR("can't write data in status mode\n");
1162 return;
1163 }
1164 /* Is it write command time ? */
baca51fa 1165 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
8977f3c1 1166 /* FIFO data write */
baca51fa
FB		 1167 fdctrl->fifo[fdctrl->data_pos++] = value;
1168 if (fdctrl->data_pos % FD_SECTOR_LEN == (FD_SECTOR_LEN - 1) ||
1169 fdctrl->data_pos == fdctrl->data_len) {
8977f3c1 1170 bdrv_write(cur_drv->bs, fd_sector(cur_drv),
baca51fa 1171 fdctrl->fifo, FD_SECTOR_LEN);
8977f3c1
FB		 1172 }
1173 /* Switch from transfert mode to status mode
1174 * then from status mode to command mode
1175 */
baca51fa
FB		 1176 if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
1177 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
8977f3c1
FB		 1178 return;
1179 }
baca51fa 1180 if (fdctrl->data_pos == 0) {
8977f3c1
FB		 1181 /* Command */
1182 switch (value & 0x5F) {
1183 case 0x46:
1184 /* READ variants */
1185 FLOPPY_DPRINTF("READ command\n");
1186 /* 8 parameters cmd */
baca51fa 1187 fdctrl->data_len = 9;
8977f3c1
FB		 1188 goto enqueue;
1189 case 0x4C:
1190 /* READ_DELETED variants */
1191 FLOPPY_DPRINTF("READ_DELETED command\n");
1192 /* 8 parameters cmd */
baca51fa 1193 fdctrl->data_len = 9;
8977f3c1
FB		 1194 goto enqueue;
1195 case 0x50:
1196 /* SCAN_EQUAL variants */
1197 FLOPPY_DPRINTF("SCAN_EQUAL command\n");
1198 /* 8 parameters cmd */
baca51fa 1199 fdctrl->data_len = 9;
8977f3c1
FB		 1200 goto enqueue;
1201 case 0x56:
1202 /* VERIFY variants */
1203 FLOPPY_DPRINTF("VERIFY command\n");
1204 /* 8 parameters cmd */
baca51fa 1205 fdctrl->data_len = 9;
8977f3c1
FB		 1206 goto enqueue;
1207 case 0x59:
1208 /* SCAN_LOW_OR_EQUAL variants */
1209 FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
1210 /* 8 parameters cmd */
baca51fa 1211 fdctrl->data_len = 9;
8977f3c1
FB		 1212 goto enqueue;
1213 case 0x5D:
1214 /* SCAN_HIGH_OR_EQUAL variants */
1215 FLOPPY_DPRINTF("SCAN_HIGH_OR_EQUAL command\n");
1216 /* 8 parameters cmd */
baca51fa 1217 fdctrl->data_len = 9;
8977f3c1
FB		 1218 goto enqueue;
1219 default:
1220 break;
1221 }
1222 switch (value & 0x7F) {
1223 case 0x45:
1224 /* WRITE variants */
1225 FLOPPY_DPRINTF("WRITE command\n");
1226 /* 8 parameters cmd */
baca51fa 1227 fdctrl->data_len = 9;
8977f3c1
FB		 1228 goto enqueue;
1229 case 0x49:
1230 /* WRITE_DELETED variants */
1231 FLOPPY_DPRINTF("WRITE_DELETED command\n");
1232 /* 8 parameters cmd */
baca51fa 1233 fdctrl->data_len = 9;
8977f3c1
FB		 1234 goto enqueue;
1235 default:
1236 break;
1237 }
1238 switch (value) {
1239 case 0x03:
1240 /* SPECIFY */
1241 FLOPPY_DPRINTF("SPECIFY command\n");
1242 /* 1 parameter cmd */
baca51fa 1243 fdctrl->data_len = 3;
8977f3c1
FB		 1244 goto enqueue;
1245 case 0x04:
1246 /* SENSE_DRIVE_STATUS */
1247 FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
1248 /* 1 parameter cmd */
baca51fa 1249 fdctrl->data_len = 2;
8977f3c1
FB		 1250 goto enqueue;
1251 case 0x07:
1252 /* RECALIBRATE */
1253 FLOPPY_DPRINTF("RECALIBRATE command\n");
1254 /* 1 parameter cmd */
baca51fa 1255 fdctrl->data_len = 2;
8977f3c1
FB		 1256 goto enqueue;
1257 case 0x08:
1258 /* SENSE_INTERRUPT_STATUS */
1259 FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
baca51fa 1260 fdctrl->int_status);
8977f3c1 1261 /* No parameters cmd: returns status if no interrupt */
baca51fa
FB		 1262 fdctrl->fifo[0] =
1263 fdctrl->int_status | (cur_drv->head << 2) | fdctrl->cur_drv;
1264 fdctrl->fifo[1] = cur_drv->track;
1265 fdctrl_set_fifo(fdctrl, 2, 0);
1266 fdctrl_reset_irq(fdctrl);
1267 fdctrl->int_status = 0xC0;
8977f3c1
FB		 1268 return;
1269 case 0x0E:
1270 /* DUMPREG */
1271 FLOPPY_DPRINTF("DUMPREG command\n");
1272 /* Drives position */
baca51fa
FB		 1273 fdctrl->fifo[0] = drv0(fdctrl)->track;
1274 fdctrl->fifo[1] = drv1(fdctrl)->track;
1275 fdctrl->fifo[2] = 0;
1276 fdctrl->fifo[3] = 0;
8977f3c1 1277 /* timers */
baca51fa
FB		 1278 fdctrl->fifo[4] = fdctrl->timer0;
1279 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | fdctrl->dma_en;
1280 fdctrl->fifo[6] = cur_drv->last_sect;
1281 fdctrl->fifo[7] = (fdctrl->lock << 7) |
8977f3c1 1282 (cur_drv->perpendicular << 2);
baca51fa
FB		 1283 fdctrl->fifo[8] = fdctrl->config;
1284 fdctrl->fifo[9] = fdctrl->precomp_trk;
1285 fdctrl_set_fifo(fdctrl, 10, 0);
8977f3c1
FB		 1286 return;
1287 case 0x0F:
1288 /* SEEK */
1289 FLOPPY_DPRINTF("SEEK command\n");
1290 /* 2 parameters cmd */
baca51fa 1291 fdctrl->data_len = 3;
8977f3c1
FB		 1292 goto enqueue;
1293 case 0x10:
1294 /* VERSION */
1295 FLOPPY_DPRINTF("VERSION command\n");
1296 /* No parameters cmd */
1297 /* Controler's version */
baca51fa
FB		 1298 fdctrl->fifo[0] = fdctrl->version;
1299 fdctrl_set_fifo(fdctrl, 1, 1);
8977f3c1
FB		 1300 return;
1301 case 0x12:
1302 /* PERPENDICULAR_MODE */
1303 FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
1304 /* 1 parameter cmd */
baca51fa 1305 fdctrl->data_len = 2;
8977f3c1
FB		 1306 goto enqueue;
1307 case 0x13:
1308 /* CONFIGURE */
1309 FLOPPY_DPRINTF("CONFIGURE command\n");
1310 /* 3 parameters cmd */
baca51fa 1311 fdctrl->data_len = 4;
8977f3c1
FB		 1312 goto enqueue;
1313 case 0x14:
1314 /* UNLOCK */
1315 FLOPPY_DPRINTF("UNLOCK command\n");
1316 /* No parameters cmd */
baca51fa
FB		 1317 fdctrl->lock = 0;
1318 fdctrl->fifo[0] = 0;
1319 fdctrl_set_fifo(fdctrl, 1, 0);
8977f3c1
FB		 1320 return;
1321 case 0x17:
1322 /* POWERDOWN_MODE */
1323 FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
1324 /* 2 parameters cmd */
baca51fa 1325 fdctrl->data_len = 3;
8977f3c1
FB		 1326 goto enqueue;
1327 case 0x18:
1328 /* PART_ID */
1329 FLOPPY_DPRINTF("PART_ID command\n");
1330 /* No parameters cmd */
baca51fa
FB		 1331 fdctrl->fifo[0] = 0x41; /* Stepping 1 */
1332 fdctrl_set_fifo(fdctrl, 1, 0);
8977f3c1
FB		 1333 return;
1334 case 0x2C:
1335 /* SAVE */
1336 FLOPPY_DPRINTF("SAVE command\n");
1337 /* No parameters cmd */
baca51fa
FB		 1338 fdctrl->fifo[0] = 0;
1339 fdctrl->fifo[1] = 0;
8977f3c1 1340 /* Drives position */
baca51fa
FB		 1341 fdctrl->fifo[2] = drv0(fdctrl)->track;
1342 fdctrl->fifo[3] = drv1(fdctrl)->track;
1343 fdctrl->fifo[4] = 0;
1344 fdctrl->fifo[5] = 0;
8977f3c1 1345 /* timers */
baca51fa
FB		 1346 fdctrl->fifo[6] = fdctrl->timer0;
1347 fdctrl->fifo[7] = fdctrl->timer1;
1348 fdctrl->fifo[8] = cur_drv->last_sect;
1349 fdctrl->fifo[9] = (fdctrl->lock << 7) |
8977f3c1 1350 (cur_drv->perpendicular << 2);
baca51fa
FB		 1351 fdctrl->fifo[10] = fdctrl->config;
1352 fdctrl->fifo[11] = fdctrl->precomp_trk;
1353 fdctrl->fifo[12] = fdctrl->pwrd;
1354 fdctrl->fifo[13] = 0;
1355 fdctrl->fifo[14] = 0;
1356 fdctrl_set_fifo(fdctrl, 15, 1);
8977f3c1
FB		 1357 return;
1358 case 0x33:
1359 /* OPTION */
1360 FLOPPY_DPRINTF("OPTION command\n");
1361 /* 1 parameter cmd */
baca51fa 1362 fdctrl->data_len = 2;
8977f3c1
FB		 1363 goto enqueue;
1364 case 0x42:
1365 /* READ_TRACK */
1366 FLOPPY_DPRINTF("READ_TRACK command\n");
1367 /* 8 parameters cmd */
baca51fa 1368 fdctrl->data_len = 9;
8977f3c1
FB		 1369 goto enqueue;
1370 case 0x4A:
1371 /* READ_ID */
1372 FLOPPY_DPRINTF("READ_ID command\n");
1373 /* 1 parameter cmd */
baca51fa 1374 fdctrl->data_len = 2;
8977f3c1
FB		 1375 goto enqueue;
1376 case 0x4C:
1377 /* RESTORE */
1378 FLOPPY_DPRINTF("RESTORE command\n");
1379 /* 17 parameters cmd */
baca51fa 1380 fdctrl->data_len = 18;
8977f3c1
FB		 1381 goto enqueue;
1382 case 0x4D:
1383 /* FORMAT_TRACK */
1384 FLOPPY_DPRINTF("FORMAT_TRACK command\n");
1385 /* 5 parameters cmd */
baca51fa 1386 fdctrl->data_len = 6;
8977f3c1
FB		 1387 goto enqueue;
1388 case 0x8E:
1389 /* DRIVE_SPECIFICATION_COMMAND */
1390 FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
1391 /* 5 parameters cmd */
baca51fa 1392 fdctrl->data_len = 6;
8977f3c1
FB		 1393 goto enqueue;
1394 case 0x8F:
1395 /* RELATIVE_SEEK_OUT */
1396 FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
1397 /* 2 parameters cmd */
baca51fa 1398 fdctrl->data_len = 3;
8977f3c1
FB		 1399 goto enqueue;
1400 case 0x94:
1401 /* LOCK */
1402 FLOPPY_DPRINTF("LOCK command\n");
1403 /* No parameters cmd */
baca51fa
FB		 1404 fdctrl->lock = 1;
1405 fdctrl->fifo[0] = 0x10;
1406 fdctrl_set_fifo(fdctrl, 1, 1);
8977f3c1
FB		 1407 return;
1408 case 0xCD:
1409 /* FORMAT_AND_WRITE */
1410 FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
1411 /* 10 parameters cmd */
baca51fa 1412 fdctrl->data_len = 11;
8977f3c1
FB		 1413 goto enqueue;
1414 case 0xCF:
1415 /* RELATIVE_SEEK_IN */
1416 FLOPPY_DPRINTF("RELATIVE_SEEK_IN command\n");
1417 /* 2 parameters cmd */
baca51fa 1418 fdctrl->data_len = 3;
8977f3c1
FB		 1419 goto enqueue;
1420 default:
1421 /* Unknown command */
1422 FLOPPY_ERROR("unknown command: 0x%02x\n", value);
baca51fa 1423 fdctrl_unimplemented(fdctrl);
8977f3c1
FB		 1424 return;
1425 }
1426 }
1427enqueue:
baca51fa
FB		 1428 FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
1429 fdctrl->fifo[fdctrl->data_pos] = value;
1430 if (++fdctrl->data_pos == fdctrl->data_len) {
8977f3c1
FB		 1431 /* We now have all parameters
1432 * and will be able to treat the command
1433 */
baca51fa
FB		 1434 if (fdctrl->data_state & FD_STATE_FORMAT) {
1435 fdctrl_format_sector(fdctrl);
1436 return;
1437 }
1438 switch (fdctrl->fifo[0] & 0x1F) {
8977f3c1
FB		 1439 case 0x06:
1440 {
1441 /* READ variants */
1442 FLOPPY_DPRINTF("treat READ command\n");
baca51fa 1443 fdctrl_start_transfer(fdctrl, FD_DIR_READ);
8977f3c1
FB		 1444 return;
1445 }
1446 case 0x0C:
1447 /* READ_DELETED variants */
1448// FLOPPY_DPRINTF("treat READ_DELETED command\n");
1449 FLOPPY_ERROR("treat READ_DELETED command\n");
baca51fa 1450 fdctrl_start_transfer_del(fdctrl, FD_DIR_READ);
8977f3c1
FB		 1451 return;
1452 case 0x16:
1453 /* VERIFY variants */
1454// FLOPPY_DPRINTF("treat VERIFY command\n");
1455 FLOPPY_ERROR("treat VERIFY command\n");
baca51fa 1456 fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
8977f3c1
FB		 1457 return;
1458 case 0x10:
1459 /* SCAN_EQUAL variants */
1460// FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
1461 FLOPPY_ERROR("treat SCAN_EQUAL command\n");
baca51fa 1462 fdctrl_start_transfer(fdctrl, FD_DIR_SCANE);
8977f3c1
FB		 1463 return;
1464 case 0x19:
1465 /* SCAN_LOW_OR_EQUAL variants */
1466// FLOPPY_DPRINTF("treat SCAN_LOW_OR_EQUAL command\n");
1467 FLOPPY_ERROR("treat SCAN_LOW_OR_EQUAL command\n");
baca51fa 1468 fdctrl_start_transfer(fdctrl, FD_DIR_SCANL);
8977f3c1
FB		 1469 return;
1470 case 0x1D:
1471 /* SCAN_HIGH_OR_EQUAL variants */
1472// FLOPPY_DPRINTF("treat SCAN_HIGH_OR_EQUAL command\n");
1473 FLOPPY_ERROR("treat SCAN_HIGH_OR_EQUAL command\n");
baca51fa 1474 fdctrl_start_transfer(fdctrl, FD_DIR_SCANH);
8977f3c1
FB		 1475 return;
1476 default:
1477 break;
1478 }
baca51fa 1479 switch (fdctrl->fifo[0] & 0x3F) {
8977f3c1
FB		 1480 case 0x05:
1481 /* WRITE variants */
baca51fa
FB		 1482 FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl->fifo[0]);
1483 fdctrl_start_transfer(fdctrl, FD_DIR_WRITE);
8977f3c1
FB		 1484 return;
1485 case 0x09:
1486 /* WRITE_DELETED variants */
1487// FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
1488 FLOPPY_ERROR("treat WRITE_DELETED command\n");
baca51fa 1489 fdctrl_start_transfer_del(fdctrl, FD_DIR_WRITE);
8977f3c1
FB		 1490 return;
1491 default:
1492 break;
1493 }
baca51fa 1494 switch (fdctrl->fifo[0]) {
8977f3c1
FB		 1495 case 0x03:
1496 /* SPECIFY */
1497 FLOPPY_DPRINTF("treat SPECIFY command\n");
baca51fa 1498 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
e309de25 1499 fdctrl->timer1 = fdctrl->fifo[2] >> 1;
baca51fa 1500 fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ;
8977f3c1 1501 /* No result back */
baca51fa 1502 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1503 break;
1504 case 0x04:
1505 /* SENSE_DRIVE_STATUS */
1506 FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
baca51fa
FB		 1507 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1508 cur_drv = get_cur_drv(fdctrl);
1509 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
8977f3c1 1510 /* 1 Byte status back */
baca51fa 1511 fdctrl->fifo[0] = (cur_drv->ro << 6) |
8977f3c1 1512 (cur_drv->track == 0 ? 0x10 : 0x00) |
baca51fa
FB		 1513 fdctrl->cur_drv;
1514 fdctrl_set_fifo(fdctrl, 1, 0);
8977f3c1
FB		 1515 break;
1516 case 0x07:
1517 /* RECALIBRATE */
1518 FLOPPY_DPRINTF("treat RECALIBRATE command\n");
baca51fa
FB		 1519 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1520 cur_drv = get_cur_drv(fdctrl);
8977f3c1 1521 fd_recalibrate(cur_drv);
baca51fa 1522 fdctrl_reset_fifo(fdctrl);
8977f3c1 1523 /* Raise Interrupt */
baca51fa 1524 fdctrl_raise_irq(fdctrl, 0x20);
8977f3c1
FB		 1525 break;
1526 case 0x0F:
1527 /* SEEK */
1528 FLOPPY_DPRINTF("treat SEEK command\n");
baca51fa
FB		 1529 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1530 cur_drv = get_cur_drv(fdctrl);
1531 fd_start(cur_drv);
1532 if (fdctrl->fifo[2] <= cur_drv->track)
8977f3c1
FB		 1533 cur_drv->dir = 1;
1534 else
1535 cur_drv->dir = 0;
baca51fa
FB		 1536 fdctrl_reset_fifo(fdctrl);
1537 if (fdctrl->fifo[2] > cur_drv->max_track) {
1538 fdctrl_raise_irq(fdctrl, 0x60);
8977f3c1 1539 } else {
baca51fa 1540 cur_drv->track = fdctrl->fifo[2];
8977f3c1 1541 /* Raise Interrupt */
baca51fa 1542 fdctrl_raise_irq(fdctrl, 0x20);
8977f3c1
FB		 1543 }
1544 break;
1545 case 0x12:
1546 /* PERPENDICULAR_MODE */
1547 FLOPPY_DPRINTF("treat PERPENDICULAR_MODE command\n");
baca51fa
FB		 1548 if (fdctrl->fifo[1] & 0x80)
1549 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
8977f3c1 1550 /* No result back */
baca51fa 1551 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1552 break;
1553 case 0x13:
1554 /* CONFIGURE */
1555 FLOPPY_DPRINTF("treat CONFIGURE command\n");
baca51fa
FB		 1556 fdctrl->config = fdctrl->fifo[2];
1557 fdctrl->precomp_trk = fdctrl->fifo[3];
8977f3c1 1558 /* No result back */
baca51fa 1559 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1560 break;
1561 case 0x17:
1562 /* POWERDOWN_MODE */
1563 FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
baca51fa
FB		 1564 fdctrl->pwrd = fdctrl->fifo[1];
1565 fdctrl->fifo[0] = fdctrl->fifo[1];
1566 fdctrl_set_fifo(fdctrl, 1, 1);
8977f3c1
FB		 1567 break;
1568 case 0x33:
1569 /* OPTION */
1570 FLOPPY_DPRINTF("treat OPTION command\n");
1571 /* No result back */
baca51fa 1572 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1573 break;
1574 case 0x42:
1575 /* READ_TRACK */
1576// FLOPPY_DPRINTF("treat READ_TRACK command\n");
1577 FLOPPY_ERROR("treat READ_TRACK command\n");
baca51fa 1578 fdctrl_start_transfer(fdctrl, FD_DIR_READ);
8977f3c1
FB		 1579 break;
1580 case 0x4A:
1581 /* READ_ID */
baca51fa 1582 FLOPPY_DPRINTF("treat READ_ID command\n");
ed5fd2cc
FB		 1583 /* XXX: should set main status register to busy */
1584 qemu_mod_timer(fdctrl->result_timer,
1585 qemu_get_clock(vm_clock) + (ticks_per_sec / 50));
8977f3c1
FB		 1586 break;
1587 case 0x4C:
1588 /* RESTORE */
1589 FLOPPY_DPRINTF("treat RESTORE command\n");
1590 /* Drives position */
baca51fa
FB		 1591 drv0(fdctrl)->track = fdctrl->fifo[3];
1592 drv1(fdctrl)->track = fdctrl->fifo[4];
8977f3c1 1593 /* timers */
baca51fa
FB		 1594 fdctrl->timer0 = fdctrl->fifo[7];
1595 fdctrl->timer1 = fdctrl->fifo[8];
1596 cur_drv->last_sect = fdctrl->fifo[9];
1597 fdctrl->lock = fdctrl->fifo[10] >> 7;
1598 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1599 fdctrl->config = fdctrl->fifo[11];
1600 fdctrl->precomp_trk = fdctrl->fifo[12];
1601 fdctrl->pwrd = fdctrl->fifo[13];
1602 fdctrl_reset_fifo(fdctrl);
8977f3c1
FB		 1603 break;
1604 case 0x4D:
1605 /* FORMAT_TRACK */
baca51fa
FB		 1606 FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
1607 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1608 cur_drv = get_cur_drv(fdctrl);
1609 fdctrl->data_state |= FD_STATE_FORMAT;
1610 if (fdctrl->fifo[0] & 0x80)
1611 fdctrl->data_state |= FD_STATE_MULTI;
1612 else
1613 fdctrl->data_state &= ~FD_STATE_MULTI;
1614 fdctrl->data_state &= ~FD_STATE_SEEK;
1615 cur_drv->bps =
1616 fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
1617#if 0
1618 cur_drv->last_sect =
1619 cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
1620 fdctrl->fifo[3] / 2;
1621#else
1622 cur_drv->last_sect = fdctrl->fifo[3];
1623#endif
1624 /* Bochs BIOS is buggy and don't send format informations
1625 * for each sector. So, pretend all's done right now...
1626 */
1627 fdctrl->data_state &= ~FD_STATE_FORMAT;
1628 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
8977f3c1
FB		 1629 break;
1630 case 0x8E:
1631 /* DRIVE_SPECIFICATION_COMMAND */
1632 FLOPPY_DPRINTF("treat DRIVE_SPECIFICATION_COMMAND command\n");
baca51fa 1633 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
8977f3c1 1634 /* Command parameters done */
baca51fa
FB		 1635 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
1636 fdctrl->fifo[0] = fdctrl->fifo[1];
1637 fdctrl->fifo[2] = 0;
1638 fdctrl->fifo[3] = 0;
1639 fdctrl_set_fifo(fdctrl, 4, 1);
8977f3c1 1640 } else {
baca51fa 1641 fdctrl_reset_fifo(fdctrl);
8977f3c1 1642 }
baca51fa 1643 } else if (fdctrl->data_len > 7) {
8977f3c1 1644 /* ERROR */
baca51fa
FB		 1645 fdctrl->fifo[0] = 0x80 |
1646 (cur_drv->head << 2) | fdctrl->cur_drv;
1647 fdctrl_set_fifo(fdctrl, 1, 1);
8977f3c1
FB		 1648 }
1649 break;
1650 case 0x8F:
1651 /* RELATIVE_SEEK_OUT */
1652 FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
baca51fa
FB		 1653 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1654 cur_drv = get_cur_drv(fdctrl);
1655 fd_start(cur_drv);
8977f3c1 1656 cur_drv->dir = 0;
baca51fa
FB		 1657 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
1658 cur_drv->track = cur_drv->max_track - 1;
1659 } else {
1660 cur_drv->track += fdctrl->fifo[2];
8977f3c1 1661 }
baca51fa
FB		 1662 fdctrl_reset_fifo(fdctrl);
1663 fdctrl_raise_irq(fdctrl, 0x20);
8977f3c1
FB		 1664 break;
1665 case 0xCD:
1666 /* FORMAT_AND_WRITE */
1667// FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
1668 FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
baca51fa 1669 fdctrl_unimplemented(fdctrl);
8977f3c1
FB		 1670 break;
1671 case 0xCF:
1672 /* RELATIVE_SEEK_IN */
1673 FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
baca51fa
FB		 1674 fdctrl->cur_drv = fdctrl->fifo[1] & 1;
1675 cur_drv = get_cur_drv(fdctrl);
1676 fd_start(cur_drv);
8977f3c1 1677 cur_drv->dir = 1;
baca51fa
FB		 1678 if (fdctrl->fifo[2] > cur_drv->track) {
1679 cur_drv->track = 0;
1680 } else {
1681 cur_drv->track -= fdctrl->fifo[2];
8977f3c1 1682 }
baca51fa
FB		 1683 fdctrl_reset_fifo(fdctrl);
1684 /* Raise Interrupt */
1685 fdctrl_raise_irq(fdctrl, 0x20);
8977f3c1
FB		 1686 break;
1687 }
1688 }
1689}
ed5fd2cc
FB		 1690
1691static void fdctrl_result_timer(void *opaque)
1692{
1693 fdctrl_t *fdctrl = opaque;
1694 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1695}
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