2 * QEMU Floppy disk emulator (Intel 82078)
4 * Copyright (c) 2003, 2007 Jocelyn Mayer
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 * The controller is used in Sun4m systems in a slightly different
26 * way. There are changes in DOR register and DMA is not available.
31 #include "qemu-timer.h"
34 /********************************************************/
35 /* debug Floppy devices */
36 //#define DEBUG_FLOPPY
39 #define FLOPPY_DPRINTF(fmt, args...) \
40 do { printf("FLOPPY: " fmt , ##args); } while (0)
42 #define FLOPPY_DPRINTF(fmt, args...)
45 #define FLOPPY_ERROR(fmt, args...) \
46 do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
48 /********************************************************/
49 /* Floppy drive emulation */
51 /* Will always be a fixed parameter for us */
52 #define FD_SECTOR_LEN 512
53 #define FD_SECTOR_SC 2 /* Sector size code */
55 /* Floppy disk drive emulation */
56 typedef enum fdisk_type_t
{
57 FDRIVE_DISK_288
= 0x01, /* 2.88 MB disk */
58 FDRIVE_DISK_144
= 0x02, /* 1.44 MB disk */
59 FDRIVE_DISK_720
= 0x03, /* 720 kB disk */
60 FDRIVE_DISK_USER
= 0x04, /* User defined geometry */
61 FDRIVE_DISK_NONE
= 0x05, /* No disk */
64 typedef enum fdrive_type_t
{
65 FDRIVE_DRV_144
= 0x00, /* 1.44 MB 3"5 drive */
66 FDRIVE_DRV_288
= 0x01, /* 2.88 MB 3"5 drive */
67 FDRIVE_DRV_120
= 0x02, /* 1.2 MB 5"25 drive */
68 FDRIVE_DRV_NONE
= 0x03, /* No drive connected */
71 typedef enum fdrive_flags_t
{
72 FDRIVE_MOTOR_ON
= 0x01, /* motor on/off */
75 typedef enum fdisk_flags_t
{
76 FDISK_DBL_SIDES
= 0x01,
79 typedef struct fdrive_t
{
83 fdrive_flags_t drflags
;
84 uint8_t perpendicular
; /* 2.88 MB access mode */
89 /* Last operation status */
90 uint8_t dir
; /* Direction */
91 uint8_t rw
; /* Read/write */
94 uint8_t last_sect
; /* Nb sector per track */
95 uint8_t max_track
; /* Nb of tracks */
96 uint16_t bps
; /* Bytes per sector */
97 uint8_t ro
; /* Is read-only */
100 static void fd_init (fdrive_t
*drv
, BlockDriverState
*bs
)
104 drv
->drive
= FDRIVE_DRV_NONE
;
106 drv
->perpendicular
= 0;
112 static int _fd_sector (uint8_t head
, uint8_t track
,
113 uint8_t sect
, uint8_t last_sect
)
115 return (((track
* 2) + head
) * last_sect
) + sect
- 1;
118 /* Returns current position, in sectors, for given drive */
119 static int fd_sector (fdrive_t
*drv
)
121 return _fd_sector(drv
->head
, drv
->track
, drv
->sect
, drv
->last_sect
);
124 static int fd_seek (fdrive_t
*drv
, uint8_t head
, uint8_t track
, uint8_t sect
,
130 if (track
> drv
->max_track
||
131 (head
!= 0 && (drv
->flags
& FDISK_DBL_SIDES
) == 0)) {
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
);
138 if (sect
> drv
->last_sect
) {
139 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
140 head
, track
, sect
, 1,
141 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
142 drv
->max_track
, drv
->last_sect
);
145 sector
= _fd_sector(head
, track
, sect
, drv
->last_sect
);
147 if (sector
!= fd_sector(drv
)) {
150 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
151 head
, track
, sect
, 1, drv
->max_track
, drv
->last_sect
);
156 if (drv
->track
!= track
)
165 /* Set drive back to track 0 */
166 static void fd_recalibrate (fdrive_t
*drv
)
168 FLOPPY_DPRINTF("recalibrate\n");
176 /* Recognize floppy formats */
177 typedef struct fd_format_t
{
186 static const fd_format_t fd_formats
[] = {
187 /* First entry is default format */
188 /* 1.44 MB 3"1/2 floppy disks */
189 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 18, 80, 1, "1.44 MB 3\"1/2", },
190 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 20, 80, 1, "1.6 MB 3\"1/2", },
191 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 21, 80, 1, "1.68 MB 3\"1/2", },
192 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 21, 82, 1, "1.72 MB 3\"1/2", },
193 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 21, 83, 1, "1.74 MB 3\"1/2", },
194 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 22, 80, 1, "1.76 MB 3\"1/2", },
195 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 23, 80, 1, "1.84 MB 3\"1/2", },
196 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 24, 80, 1, "1.92 MB 3\"1/2", },
197 /* 2.88 MB 3"1/2 floppy disks */
198 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 36, 80, 1, "2.88 MB 3\"1/2", },
199 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 39, 80, 1, "3.12 MB 3\"1/2", },
200 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 40, 80, 1, "3.2 MB 3\"1/2", },
201 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 44, 80, 1, "3.52 MB 3\"1/2", },
202 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 48, 80, 1, "3.84 MB 3\"1/2", },
203 /* 720 kB 3"1/2 floppy disks */
204 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 9, 80, 1, "720 kB 3\"1/2", },
205 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 10, 80, 1, "800 kB 3\"1/2", },
206 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 10, 82, 1, "820 kB 3\"1/2", },
207 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 10, 83, 1, "830 kB 3\"1/2", },
208 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 13, 80, 1, "1.04 MB 3\"1/2", },
209 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 14, 80, 1, "1.12 MB 3\"1/2", },
210 /* 1.2 MB 5"1/4 floppy disks */
211 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 15, 80, 1, "1.2 kB 5\"1/4", },
212 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 18, 80, 1, "1.44 MB 5\"1/4", },
213 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 18, 82, 1, "1.48 MB 5\"1/4", },
214 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 18, 83, 1, "1.49 MB 5\"1/4", },
215 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 20, 80, 1, "1.6 MB 5\"1/4", },
216 /* 720 kB 5"1/4 floppy disks */
217 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 9, 80, 1, "720 kB 5\"1/4", },
218 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 11, 80, 1, "880 kB 5\"1/4", },
219 /* 360 kB 5"1/4 floppy disks */
220 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 9, 40, 1, "360 kB 5\"1/4", },
221 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 9, 40, 0, "180 kB 5\"1/4", },
222 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 10, 41, 1, "410 kB 5\"1/4", },
223 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 10, 42, 1, "420 kB 5\"1/4", },
224 /* 320 kB 5"1/4 floppy disks */
225 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 8, 40, 1, "320 kB 5\"1/4", },
226 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 8, 40, 0, "160 kB 5\"1/4", },
227 /* 360 kB must match 5"1/4 better than 3"1/2... */
228 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 9, 80, 0, "360 kB 3\"1/2", },
230 { FDRIVE_DRV_NONE
, FDRIVE_DISK_NONE
, -1, -1, 0, NULL
, },
233 /* Revalidate a disk drive after a disk change */
234 static void fd_revalidate (fdrive_t
*drv
)
236 const fd_format_t
*parse
;
237 uint64_t nb_sectors
, size
;
238 int i
, first_match
, match
;
239 int nb_heads
, max_track
, last_sect
, ro
;
241 FLOPPY_DPRINTF("revalidate\n");
242 if (drv
->bs
!= NULL
&& bdrv_is_inserted(drv
->bs
)) {
243 ro
= bdrv_is_read_only(drv
->bs
);
244 bdrv_get_geometry_hint(drv
->bs
, &nb_heads
, &max_track
, &last_sect
);
245 if (nb_heads
!= 0 && max_track
!= 0 && last_sect
!= 0) {
246 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
247 nb_heads
- 1, max_track
, last_sect
);
249 bdrv_get_geometry(drv
->bs
, &nb_sectors
);
253 parse
= &fd_formats
[i
];
254 if (parse
->drive
== FDRIVE_DRV_NONE
)
256 if (drv
->drive
== parse
->drive
||
257 drv
->drive
== FDRIVE_DRV_NONE
) {
258 size
= (parse
->max_head
+ 1) * parse
->max_track
*
260 if (nb_sectors
== size
) {
264 if (first_match
== -1)
269 if (first_match
== -1)
273 parse
= &fd_formats
[match
];
275 nb_heads
= parse
->max_head
+ 1;
276 max_track
= parse
->max_track
;
277 last_sect
= parse
->last_sect
;
278 drv
->drive
= parse
->drive
;
279 FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse
->str
,
280 nb_heads
, max_track
, last_sect
, ro
? "ro" : "rw");
283 drv
->flags
&= ~FDISK_DBL_SIDES
;
285 drv
->flags
|= FDISK_DBL_SIDES
;
287 drv
->max_track
= max_track
;
288 drv
->last_sect
= last_sect
;
291 FLOPPY_DPRINTF("No disk in drive\n");
294 drv
->flags
&= ~FDISK_DBL_SIDES
;
299 static void fd_start (fdrive_t
*drv
)
301 drv
->drflags
|= FDRIVE_MOTOR_ON
;
304 static void fd_stop (fdrive_t
*drv
)
306 drv
->drflags
&= ~FDRIVE_MOTOR_ON
;
309 /* Re-initialise a drives (motor off, repositioned) */
310 static void fd_reset (fdrive_t
*drv
)
316 /********************************************************/
317 /* Intel 82078 floppy disk controller emulation */
319 static void fdctrl_reset (fdctrl_t
*fdctrl
, int do_irq
);
320 static void fdctrl_reset_fifo (fdctrl_t
*fdctrl
);
321 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
322 int dma_pos
, int dma_len
);
323 static void fdctrl_raise_irq (fdctrl_t
*fdctrl
, uint8_t status
);
324 static void fdctrl_result_timer(void *opaque
);
326 static uint32_t fdctrl_read_statusB (fdctrl_t
*fdctrl
);
327 static uint32_t fdctrl_read_dor (fdctrl_t
*fdctrl
);
328 static void fdctrl_write_dor (fdctrl_t
*fdctrl
, uint32_t value
);
329 static uint32_t fdctrl_read_tape (fdctrl_t
*fdctrl
);
330 static void fdctrl_write_tape (fdctrl_t
*fdctrl
, uint32_t value
);
331 static uint32_t fdctrl_read_main_status (fdctrl_t
*fdctrl
);
332 static void fdctrl_write_rate (fdctrl_t
*fdctrl
, uint32_t value
);
333 static uint32_t fdctrl_read_data (fdctrl_t
*fdctrl
);
334 static void fdctrl_write_data (fdctrl_t
*fdctrl
, uint32_t value
);
335 static uint32_t fdctrl_read_dir (fdctrl_t
*fdctrl
);
338 FD_CTRL_ACTIVE
= 0x01, /* XXX: suppress that */
339 FD_CTRL_RESET
= 0x02,
340 FD_CTRL_SLEEP
= 0x04, /* XXX: suppress that */
341 FD_CTRL_BUSY
= 0x08, /* dma transfer in progress */
355 FD_STATE_STATUS
= 0x01,
356 FD_STATE_DATA
= 0x02,
357 FD_STATE_STATE
= 0x03,
358 FD_STATE_MULTI
= 0x10,
359 FD_STATE_SEEK
= 0x20,
360 FD_STATE_FORMAT
= 0x40,
365 FD_REG_STATUSB
= 0x01,
375 FD_CMD_SPECIFY
= 0x03,
376 FD_CMD_SENSE_DRIVE_STATUS
= 0x04,
377 FD_CMD_RECALIBRATE
= 0x07,
378 FD_CMD_SENSE_INTERRUPT_STATUS
= 0x08,
379 FD_CMD_DUMPREG
= 0x0e,
381 FD_CMD_VERSION
= 0x10,
382 FD_CMD_PERPENDICULAR_MODE
= 0x12,
383 FD_CMD_CONFIGURE
= 0x13,
384 FD_CMD_UNLOCK
= 0x14,
385 FD_CMD_POWERDOWN_MODE
= 0x17,
386 FD_CMD_PART_ID
= 0x18,
388 FD_CMD_OPTION
= 0x33,
389 FD_CMD_READ_TRACK
= 0x42,
392 FD_CMD_WRITE_DELETED
= 0x49,
393 FD_CMD_READ_ID
= 0x4a,
394 FD_CMD_READ_DELETED
= 0x4c,
395 FD_CMD_RESTORE
= 0x4c,
396 FD_CMD_FORMAT_TRACK
= 0x4d,
397 FD_CMD_SCAN_EQUAL
= 0x50,
398 FD_CMD_VERIFY
= 0x56,
399 FD_CMD_SCAN_LOW_OR_EQUAL
= 0x59,
400 FD_CMD_SCAN_HIGH_OR_EQUAL
= 0x5d,
401 FD_CMD_DRIVE_SPECIFICATION_COMMAND
= 0x8e,
402 FD_CMD_RELATIVE_SEEK_OUT
= 0x8f,
404 FD_CMD_FORMAT_AND_WRITE
= 0xcd,
405 FD_CMD_RELATIVE_SEEK_IN
= 0xcf,
409 FD_CONFIG_PRETRK
= 0xff, /* Pre-compensation set to track 0 */
410 FD_CONFIG_FIFOTHR
= 0x0f, /* FIFO threshold set to 1 byte */
411 FD_CONFIG_POLL
= 0x10, /* Poll enabled */
412 FD_CONFIG_EFIFO
= 0x20, /* FIFO disabled */
413 FD_CONFIG_EIS
= 0x40, /* No implied seeks */
419 FD_SR0_ABNTERM
= 0x40,
420 FD_SR0_INVCMD
= 0x80,
421 FD_SR0_RDYCHG
= 0xc0,
425 FD_DOR_SELMASK
= 0x01,
426 FD_DOR_nRESET
= 0x04,
428 FD_DOR_MOTEN0
= 0x10,
429 FD_DOR_MOTEN1
= 0x20,
430 FD_DOR_MOTEN2
= 0x40,
431 FD_DOR_MOTEN3
= 0x80,
435 FD_TDR_BOOTSEL
= 0x0c,
439 FD_DSR_DRATEMASK
= 0x03,
440 FD_DSR_PWRDOWN
= 0x40,
441 FD_DSR_SWRESET
= 0x80,
445 FD_MSR_DRV0BUSY
= 0x01,
446 FD_MSR_DRV1BUSY
= 0x02,
447 FD_MSR_DRV2BUSY
= 0x04,
448 FD_MSR_DRV3BUSY
= 0x08,
449 FD_MSR_CMDBUSY
= 0x10,
450 FD_MSR_NONDMA
= 0x20,
456 FD_DIR_DSKCHG
= 0x80,
459 #define FD_STATE(state) ((state) & FD_STATE_STATE)
460 #define FD_SET_STATE(state, new_state) \
461 do { (state) = ((state) & ~FD_STATE_STATE) | (new_state); } while (0)
462 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
463 #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
464 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
468 /* Controller's identification */
473 target_phys_addr_t io_base
;
474 /* Controller state */
475 QEMUTimer
*result_timer
;
487 uint8_t eot
; /* last wanted sector */
488 /* States kept only to be returned back */
492 /* precompensation */
496 /* Power down config (also with status regB access mode */
504 static uint32_t fdctrl_read (void *opaque
, uint32_t reg
)
506 fdctrl_t
*fdctrl
= opaque
;
509 switch (reg
& 0x07) {
512 // Identify to Linux as S82078B
513 retval
= fdctrl_read_statusB(fdctrl
);
515 retval
= (uint32_t)(-1);
519 retval
= fdctrl_read_statusB(fdctrl
);
522 retval
= fdctrl_read_dor(fdctrl
);
525 retval
= fdctrl_read_tape(fdctrl
);
528 retval
= fdctrl_read_main_status(fdctrl
);
531 retval
= fdctrl_read_data(fdctrl
);
534 retval
= fdctrl_read_dir(fdctrl
);
537 retval
= (uint32_t)(-1);
540 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg
& 7, retval
);
545 static void fdctrl_write (void *opaque
, uint32_t reg
, uint32_t value
)
547 fdctrl_t
*fdctrl
= opaque
;
549 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg
& 7, value
);
551 switch (reg
& 0x07) {
553 fdctrl_write_dor(fdctrl
, value
);
556 fdctrl_write_tape(fdctrl
, value
);
559 fdctrl_write_rate(fdctrl
, value
);
562 fdctrl_write_data(fdctrl
, value
);
569 static uint32_t fdctrl_read_mem (void *opaque
, target_phys_addr_t reg
)
571 return fdctrl_read(opaque
, (uint32_t)reg
);
574 static void fdctrl_write_mem (void *opaque
,
575 target_phys_addr_t reg
, uint32_t value
)
577 fdctrl_write(opaque
, (uint32_t)reg
, value
);
580 static CPUReadMemoryFunc
*fdctrl_mem_read
[3] = {
586 static CPUWriteMemoryFunc
*fdctrl_mem_write
[3] = {
592 static CPUReadMemoryFunc
*fdctrl_mem_read_strict
[3] = {
598 static CPUWriteMemoryFunc
*fdctrl_mem_write_strict
[3] = {
604 static void fd_save (QEMUFile
*f
, fdrive_t
*fd
)
609 qemu_put_8s(f
, &tmp
);
610 qemu_put_8s(f
, &fd
->head
);
611 qemu_put_8s(f
, &fd
->track
);
612 qemu_put_8s(f
, &fd
->sect
);
613 qemu_put_8s(f
, &fd
->dir
);
614 qemu_put_8s(f
, &fd
->rw
);
617 static void fdc_save (QEMUFile
*f
, void *opaque
)
619 fdctrl_t
*s
= opaque
;
621 qemu_put_8s(f
, &s
->state
);
622 qemu_put_8s(f
, &s
->dma_en
);
623 qemu_put_8s(f
, &s
->cur_drv
);
624 qemu_put_8s(f
, &s
->bootsel
);
625 qemu_put_buffer(f
, s
->fifo
, FD_SECTOR_LEN
);
626 qemu_put_be32s(f
, &s
->data_pos
);
627 qemu_put_be32s(f
, &s
->data_len
);
628 qemu_put_8s(f
, &s
->data_state
);
629 qemu_put_8s(f
, &s
->data_dir
);
630 qemu_put_8s(f
, &s
->int_status
);
631 qemu_put_8s(f
, &s
->eot
);
632 qemu_put_8s(f
, &s
->timer0
);
633 qemu_put_8s(f
, &s
->timer1
);
634 qemu_put_8s(f
, &s
->precomp_trk
);
635 qemu_put_8s(f
, &s
->config
);
636 qemu_put_8s(f
, &s
->lock
);
637 qemu_put_8s(f
, &s
->pwrd
);
638 fd_save(f
, &s
->drives
[0]);
639 fd_save(f
, &s
->drives
[1]);
642 static int fd_load (QEMUFile
*f
, fdrive_t
*fd
)
646 qemu_get_8s(f
, &tmp
);
648 qemu_get_8s(f
, &fd
->head
);
649 qemu_get_8s(f
, &fd
->track
);
650 qemu_get_8s(f
, &fd
->sect
);
651 qemu_get_8s(f
, &fd
->dir
);
652 qemu_get_8s(f
, &fd
->rw
);
657 static int fdc_load (QEMUFile
*f
, void *opaque
, int version_id
)
659 fdctrl_t
*s
= opaque
;
665 qemu_get_8s(f
, &s
->state
);
666 qemu_get_8s(f
, &s
->dma_en
);
667 qemu_get_8s(f
, &s
->cur_drv
);
668 qemu_get_8s(f
, &s
->bootsel
);
669 qemu_get_buffer(f
, s
->fifo
, FD_SECTOR_LEN
);
670 qemu_get_be32s(f
, &s
->data_pos
);
671 qemu_get_be32s(f
, &s
->data_len
);
672 qemu_get_8s(f
, &s
->data_state
);
673 qemu_get_8s(f
, &s
->data_dir
);
674 qemu_get_8s(f
, &s
->int_status
);
675 qemu_get_8s(f
, &s
->eot
);
676 qemu_get_8s(f
, &s
->timer0
);
677 qemu_get_8s(f
, &s
->timer1
);
678 qemu_get_8s(f
, &s
->precomp_trk
);
679 qemu_get_8s(f
, &s
->config
);
680 qemu_get_8s(f
, &s
->lock
);
681 qemu_get_8s(f
, &s
->pwrd
);
683 ret
= fd_load(f
, &s
->drives
[0]);
685 ret
= fd_load(f
, &s
->drives
[1]);
690 static void fdctrl_external_reset(void *opaque
)
692 fdctrl_t
*s
= opaque
;
697 static fdctrl_t
*fdctrl_init_common (qemu_irq irq
, int dma_chann
,
698 target_phys_addr_t io_base
,
699 BlockDriverState
**fds
)
704 FLOPPY_DPRINTF("init controller\n");
705 fdctrl
= qemu_mallocz(sizeof(fdctrl_t
));
708 fdctrl
->fifo
= qemu_memalign(512, FD_SECTOR_LEN
);
709 if (fdctrl
->fifo
== NULL
) {
713 fdctrl
->result_timer
= qemu_new_timer(vm_clock
,
714 fdctrl_result_timer
, fdctrl
);
716 fdctrl
->version
= 0x90; /* Intel 82078 controller */
718 fdctrl
->dma_chann
= dma_chann
;
719 fdctrl
->io_base
= io_base
;
720 fdctrl
->config
= FD_CONFIG_EIS
| FD_CONFIG_EFIFO
; /* Implicit seek, polling & FIFO enabled */
721 if (fdctrl
->dma_chann
!= -1) {
723 DMA_register_channel(dma_chann
, &fdctrl_transfer_handler
, fdctrl
);
727 for (i
= 0; i
< MAX_FD
; i
++) {
728 fd_init(&fdctrl
->drives
[i
], fds
[i
]);
730 fdctrl_reset(fdctrl
, 0);
731 fdctrl
->state
= FD_CTRL_ACTIVE
;
732 register_savevm("fdc", io_base
, 1, fdc_save
, fdc_load
, fdctrl
);
733 qemu_register_reset(fdctrl_external_reset
, fdctrl
);
734 for (i
= 0; i
< MAX_FD
; i
++) {
735 fd_revalidate(&fdctrl
->drives
[i
]);
741 fdctrl_t
*fdctrl_init (qemu_irq irq
, int dma_chann
, int mem_mapped
,
742 target_phys_addr_t io_base
,
743 BlockDriverState
**fds
)
748 fdctrl
= fdctrl_init_common(irq
, dma_chann
, io_base
, fds
);
752 io_mem
= cpu_register_io_memory(0, fdctrl_mem_read
, fdctrl_mem_write
,
754 cpu_register_physical_memory(io_base
, 0x08, io_mem
);
756 register_ioport_read((uint32_t)io_base
+ 0x01, 5, 1, &fdctrl_read
,
758 register_ioport_read((uint32_t)io_base
+ 0x07, 1, 1, &fdctrl_read
,
760 register_ioport_write((uint32_t)io_base
+ 0x01, 5, 1, &fdctrl_write
,
762 register_ioport_write((uint32_t)io_base
+ 0x07, 1, 1, &fdctrl_write
,
769 fdctrl_t
*sun4m_fdctrl_init (qemu_irq irq
, target_phys_addr_t io_base
,
770 BlockDriverState
**fds
)
775 fdctrl
= fdctrl_init_common(irq
, 0, io_base
, fds
);
777 io_mem
= cpu_register_io_memory(0, fdctrl_mem_read_strict
,
778 fdctrl_mem_write_strict
,
780 cpu_register_physical_memory(io_base
, 0x08, io_mem
);
785 /* XXX: may change if moved to bdrv */
786 int fdctrl_get_drive_type(fdctrl_t
*fdctrl
, int drive_num
)
788 return fdctrl
->drives
[drive_num
].drive
;
791 /* Change IRQ state */
792 static void fdctrl_reset_irq (fdctrl_t
*fdctrl
)
794 FLOPPY_DPRINTF("Reset interrupt\n");
795 qemu_set_irq(fdctrl
->irq
, 0);
796 fdctrl
->state
&= ~FD_CTRL_INTR
;
799 static void fdctrl_raise_irq (fdctrl_t
*fdctrl
, uint8_t status
)
802 if (fdctrl
->sun4m
&& !fdctrl
->dma_en
) {
803 fdctrl
->state
&= ~FD_CTRL_BUSY
;
804 fdctrl
->int_status
= status
;
807 if (~(fdctrl
->state
& FD_CTRL_INTR
)) {
808 qemu_set_irq(fdctrl
->irq
, 1);
809 fdctrl
->state
|= FD_CTRL_INTR
;
811 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", status
);
812 fdctrl
->int_status
= status
;
815 /* Reset controller */
816 static void fdctrl_reset (fdctrl_t
*fdctrl
, int do_irq
)
820 FLOPPY_DPRINTF("reset controller\n");
821 fdctrl_reset_irq(fdctrl
);
822 /* Initialise controller */
825 fdctrl
->data_pos
= 0;
826 fdctrl
->data_len
= 0;
827 fdctrl
->data_state
= FD_STATE_CMD
;
828 fdctrl
->data_dir
= FD_DIR_WRITE
;
829 for (i
= 0; i
< MAX_FD
; i
++)
830 fd_reset(&fdctrl
->drives
[i
]);
831 fdctrl_reset_fifo(fdctrl
);
833 fdctrl_raise_irq(fdctrl
, FD_SR0_RDYCHG
);
836 static inline fdrive_t
*drv0 (fdctrl_t
*fdctrl
)
838 return &fdctrl
->drives
[fdctrl
->bootsel
];
841 static inline fdrive_t
*drv1 (fdctrl_t
*fdctrl
)
843 return &fdctrl
->drives
[1 - fdctrl
->bootsel
];
846 static fdrive_t
*get_cur_drv (fdctrl_t
*fdctrl
)
848 return fdctrl
->cur_drv
== 0 ? drv0(fdctrl
) : drv1(fdctrl
);
851 /* Status B register : 0x01 (read-only) */
852 static uint32_t fdctrl_read_statusB (fdctrl_t
*fdctrl
)
854 FLOPPY_DPRINTF("status register: 0x00\n");
858 /* Digital output register : 0x02 */
859 static uint32_t fdctrl_read_dor (fdctrl_t
*fdctrl
)
863 /* Drive motors state indicators */
864 if (drv0(fdctrl
)->drflags
& FDRIVE_MOTOR_ON
)
865 retval
|= FD_DOR_MOTEN0
;
866 if (drv1(fdctrl
)->drflags
& FDRIVE_MOTOR_ON
)
867 retval
|= FD_DOR_MOTEN1
;
870 retval
|= FD_DOR_DMAEN
;
871 /* Reset indicator */
872 if (!(fdctrl
->state
& FD_CTRL_RESET
))
873 retval
|= FD_DOR_nRESET
;
875 retval
|= fdctrl
->cur_drv
;
876 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval
);
881 static void fdctrl_write_dor (fdctrl_t
*fdctrl
, uint32_t value
)
884 if (fdctrl
->state
& FD_CTRL_RESET
) {
885 if (!(value
& FD_DOR_nRESET
)) {
886 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
890 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value
);
891 /* Drive motors state indicators */
892 if (value
& FD_DOR_MOTEN1
)
893 fd_start(drv1(fdctrl
));
895 fd_stop(drv1(fdctrl
));
896 if (value
& FD_DOR_MOTEN0
)
897 fd_start(drv0(fdctrl
));
899 fd_stop(drv0(fdctrl
));
902 if (fdctrl
->dma_chann
!= -1)
903 fdctrl
->dma_en
= value
& FD_DOR_DMAEN
? 1 : 0;
906 if (!(value
& FD_DOR_nRESET
)) {
907 if (!(fdctrl
->state
& FD_CTRL_RESET
)) {
908 FLOPPY_DPRINTF("controller enter RESET state\n");
909 fdctrl
->state
|= FD_CTRL_RESET
;
912 if (fdctrl
->state
& FD_CTRL_RESET
) {
913 FLOPPY_DPRINTF("controller out of RESET state\n");
914 fdctrl_reset(fdctrl
, 1);
915 fdctrl
->state
&= ~(FD_CTRL_RESET
| FD_CTRL_SLEEP
);
919 fdctrl
->cur_drv
= value
& FD_DOR_SELMASK
;
922 /* Tape drive register : 0x03 */
923 static uint32_t fdctrl_read_tape (fdctrl_t
*fdctrl
)
927 /* Disk boot selection indicator */
928 retval
|= fdctrl
->bootsel
<< 2;
929 /* Tape indicators: never allowed */
930 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval
);
935 static void fdctrl_write_tape (fdctrl_t
*fdctrl
, uint32_t value
)
938 if (fdctrl
->state
& FD_CTRL_RESET
) {
939 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
942 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value
);
943 /* Disk boot selection indicator */
944 fdctrl
->bootsel
= (value
& FD_TDR_BOOTSEL
) >> 2;
945 /* Tape indicators: never allow */
948 /* Main status register : 0x04 (read) */
949 static uint32_t fdctrl_read_main_status (fdctrl_t
*fdctrl
)
953 fdctrl
->state
&= ~(FD_CTRL_SLEEP
| FD_CTRL_RESET
);
954 if (!(fdctrl
->state
& FD_CTRL_BUSY
)) {
955 /* Data transfer allowed */
956 retval
|= FD_MSR_RQM
;
957 /* Data transfer direction indicator */
958 if (fdctrl
->data_dir
== FD_DIR_READ
)
959 retval
|= FD_MSR_DIO
;
961 /* Should handle FD_MSR_NONDMA for SPECIFY command */
962 /* Command busy indicator */
963 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
||
964 FD_STATE(fdctrl
->data_state
) == FD_STATE_STATUS
)
965 retval
|= FD_MSR_CMDBUSY
;
966 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval
);
971 /* Data select rate register : 0x04 (write) */
972 static void fdctrl_write_rate (fdctrl_t
*fdctrl
, uint32_t value
)
975 if (fdctrl
->state
& FD_CTRL_RESET
) {
976 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
979 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value
);
980 /* Reset: autoclear */
981 if (value
& FD_DSR_SWRESET
) {
982 fdctrl
->state
|= FD_CTRL_RESET
;
983 fdctrl_reset(fdctrl
, 1);
984 fdctrl
->state
&= ~FD_CTRL_RESET
;
986 if (value
& FD_DSR_PWRDOWN
) {
987 fdctrl
->state
|= FD_CTRL_SLEEP
;
988 fdctrl_reset(fdctrl
, 1);
992 static int fdctrl_media_changed(fdrive_t
*drv
)
998 ret
= bdrv_media_changed(drv
->bs
);
1005 /* Digital input register : 0x07 (read-only) */
1006 static uint32_t fdctrl_read_dir (fdctrl_t
*fdctrl
)
1008 uint32_t retval
= 0;
1010 if (fdctrl_media_changed(drv0(fdctrl
)) ||
1011 fdctrl_media_changed(drv1(fdctrl
)))
1012 retval
|= FD_DIR_DSKCHG
;
1014 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval
);
1019 /* FIFO state control */
1020 static void fdctrl_reset_fifo (fdctrl_t
*fdctrl
)
1022 fdctrl
->data_dir
= FD_DIR_WRITE
;
1023 fdctrl
->data_pos
= 0;
1024 FD_SET_STATE(fdctrl
->data_state
, FD_STATE_CMD
);
1027 /* Set FIFO status for the host to read */
1028 static void fdctrl_set_fifo (fdctrl_t
*fdctrl
, int fifo_len
, int do_irq
)
1030 fdctrl
->data_dir
= FD_DIR_READ
;
1031 fdctrl
->data_len
= fifo_len
;
1032 fdctrl
->data_pos
= 0;
1033 FD_SET_STATE(fdctrl
->data_state
, FD_STATE_STATUS
);
1035 fdctrl_raise_irq(fdctrl
, 0x00);
1038 /* Set an error: unimplemented/unknown command */
1039 static void fdctrl_unimplemented (fdctrl_t
*fdctrl
)
1044 cur_drv
= get_cur_drv(fdctrl
);
1045 fdctrl
->fifo
[0] = FD_SR0_ABNTERM
| FD_SR0_SEEK
| (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
1046 fdctrl
->fifo
[1] = 0x00;
1047 fdctrl
->fifo
[2] = 0x00;
1048 fdctrl_set_fifo(fdctrl
, 3, 1);
1050 // fdctrl_reset_fifo(fdctrl);
1051 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
1052 fdctrl_set_fifo(fdctrl
, 1, 0);
1056 /* Callback for transfer end (stop or abort) */
1057 static void fdctrl_stop_transfer (fdctrl_t
*fdctrl
, uint8_t status0
,
1058 uint8_t status1
, uint8_t status2
)
1062 cur_drv
= get_cur_drv(fdctrl
);
1063 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1064 status0
, status1
, status2
,
1065 status0
| (cur_drv
->head
<< 2) | fdctrl
->cur_drv
);
1066 fdctrl
->fifo
[0] = status0
| (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
1067 fdctrl
->fifo
[1] = status1
;
1068 fdctrl
->fifo
[2] = status2
;
1069 fdctrl
->fifo
[3] = cur_drv
->track
;
1070 fdctrl
->fifo
[4] = cur_drv
->head
;
1071 fdctrl
->fifo
[5] = cur_drv
->sect
;
1072 fdctrl
->fifo
[6] = FD_SECTOR_SC
;
1073 fdctrl
->data_dir
= FD_DIR_READ
;
1074 if (fdctrl
->state
& FD_CTRL_BUSY
) {
1075 DMA_release_DREQ(fdctrl
->dma_chann
);
1076 fdctrl
->state
&= ~FD_CTRL_BUSY
;
1078 fdctrl_set_fifo(fdctrl
, 7, 1);
1081 /* Prepare a data transfer (either DMA or FIFO) */
1082 static void fdctrl_start_transfer (fdctrl_t
*fdctrl
, int direction
)
1088 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1089 cur_drv
= get_cur_drv(fdctrl
);
1090 kt
= fdctrl
->fifo
[2];
1091 kh
= fdctrl
->fifo
[3];
1092 ks
= fdctrl
->fifo
[4];
1093 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1094 fdctrl
->cur_drv
, kh
, kt
, ks
,
1095 _fd_sector(kh
, kt
, ks
, cur_drv
->last_sect
));
1097 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& 0x40)) {
1100 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1101 fdctrl
->fifo
[3] = kt
;
1102 fdctrl
->fifo
[4] = kh
;
1103 fdctrl
->fifo
[5] = ks
;
1107 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x80, 0x00);
1108 fdctrl
->fifo
[3] = kt
;
1109 fdctrl
->fifo
[4] = kh
;
1110 fdctrl
->fifo
[5] = ks
;
1113 /* No seek enabled */
1114 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1115 fdctrl
->fifo
[3] = kt
;
1116 fdctrl
->fifo
[4] = kh
;
1117 fdctrl
->fifo
[5] = ks
;
1125 /* Set the FIFO state */
1126 fdctrl
->data_dir
= direction
;
1127 fdctrl
->data_pos
= 0;
1128 FD_SET_STATE(fdctrl
->data_state
, FD_STATE_DATA
); /* FIFO ready for data */
1129 if (fdctrl
->fifo
[0] & 0x80)
1130 fdctrl
->data_state
|= FD_STATE_MULTI
;
1132 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1134 fdctrl
->data_state
|= FD_STATE_SEEK
;
1136 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1137 if (fdctrl
->fifo
[5] == 00) {
1138 fdctrl
->data_len
= fdctrl
->fifo
[8];
1141 fdctrl
->data_len
= 128 << (fdctrl
->fifo
[5] > 7 ? 7 : fdctrl
->fifo
[5]);
1142 tmp
= (cur_drv
->last_sect
- ks
+ 1);
1143 if (fdctrl
->fifo
[0] & 0x80)
1144 tmp
+= cur_drv
->last_sect
;
1145 fdctrl
->data_len
*= tmp
;
1147 fdctrl
->eot
= fdctrl
->fifo
[6];
1148 if (fdctrl
->dma_en
) {
1150 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1151 dma_mode
= DMA_get_channel_mode(fdctrl
->dma_chann
);
1152 dma_mode
= (dma_mode
>> 2) & 3;
1153 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1154 dma_mode
, direction
,
1155 (128 << fdctrl
->fifo
[5]) *
1156 (cur_drv
->last_sect
- ks
+ 1), fdctrl
->data_len
);
1157 if (((direction
== FD_DIR_SCANE
|| direction
== FD_DIR_SCANL
||
1158 direction
== FD_DIR_SCANH
) && dma_mode
== 0) ||
1159 (direction
== FD_DIR_WRITE
&& dma_mode
== 2) ||
1160 (direction
== FD_DIR_READ
&& dma_mode
== 1)) {
1161 /* No access is allowed until DMA transfer has completed */
1162 fdctrl
->state
|= FD_CTRL_BUSY
;
1163 /* Now, we just have to wait for the DMA controller to
1166 DMA_hold_DREQ(fdctrl
->dma_chann
);
1167 DMA_schedule(fdctrl
->dma_chann
);
1170 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode
, direction
);
1173 FLOPPY_DPRINTF("start non-DMA transfer\n");
1174 /* IO based transfer: calculate len */
1175 fdctrl_raise_irq(fdctrl
, 0x00);
1180 /* Prepare a transfer of deleted data */
1181 static void fdctrl_start_transfer_del (fdctrl_t
*fdctrl
, int direction
)
1183 /* We don't handle deleted data,
1184 * so we don't return *ANYTHING*
1186 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1189 /* handlers for DMA transfers */
1190 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
1191 int dma_pos
, int dma_len
)
1195 int len
, start_pos
, rel_pos
;
1196 uint8_t status0
= 0x00, status1
= 0x00, status2
= 0x00;
1199 if (!(fdctrl
->state
& FD_CTRL_BUSY
)) {
1200 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1203 cur_drv
= get_cur_drv(fdctrl
);
1204 if (fdctrl
->data_dir
== FD_DIR_SCANE
|| fdctrl
->data_dir
== FD_DIR_SCANL
||
1205 fdctrl
->data_dir
== FD_DIR_SCANH
)
1207 if (dma_len
> fdctrl
->data_len
)
1208 dma_len
= fdctrl
->data_len
;
1209 if (cur_drv
->bs
== NULL
) {
1210 if (fdctrl
->data_dir
== FD_DIR_WRITE
)
1211 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1213 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1215 goto transfer_error
;
1217 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1218 for (start_pos
= fdctrl
->data_pos
; fdctrl
->data_pos
< dma_len
;) {
1219 len
= dma_len
- fdctrl
->data_pos
;
1220 if (len
+ rel_pos
> FD_SECTOR_LEN
)
1221 len
= FD_SECTOR_LEN
- rel_pos
;
1222 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1223 "(%d-0x%08x 0x%08x)\n", len
, dma_len
, fdctrl
->data_pos
,
1224 fdctrl
->data_len
, fdctrl
->cur_drv
, cur_drv
->head
,
1225 cur_drv
->track
, cur_drv
->sect
, fd_sector(cur_drv
),
1226 fd_sector(cur_drv
) * FD_SECTOR_LEN
);
1227 if (fdctrl
->data_dir
!= FD_DIR_WRITE
||
1228 len
< FD_SECTOR_LEN
|| rel_pos
!= 0) {
1229 /* READ & SCAN commands and realign to a sector for WRITE */
1230 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
),
1231 fdctrl
->fifo
, 1) < 0) {
1232 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1233 fd_sector(cur_drv
));
1234 /* Sure, image size is too small... */
1235 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1238 switch (fdctrl
->data_dir
) {
1241 DMA_write_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1242 fdctrl
->data_pos
, len
);
1245 /* WRITE commands */
1246 DMA_read_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1247 fdctrl
->data_pos
, len
);
1248 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
),
1249 fdctrl
->fifo
, 1) < 0) {
1250 FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv
));
1251 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1252 goto transfer_error
;
1258 uint8_t tmpbuf
[FD_SECTOR_LEN
];
1260 DMA_read_memory (nchan
, tmpbuf
, fdctrl
->data_pos
, len
);
1261 ret
= memcmp(tmpbuf
, fdctrl
->fifo
+ rel_pos
, len
);
1266 if ((ret
< 0 && fdctrl
->data_dir
== FD_DIR_SCANL
) ||
1267 (ret
> 0 && fdctrl
->data_dir
== FD_DIR_SCANH
)) {
1274 fdctrl
->data_pos
+= len
;
1275 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1277 /* Seek to next sector */
1278 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
1279 cur_drv
->head
, cur_drv
->track
, cur_drv
->sect
,
1281 fdctrl
->data_pos
- len
);
1282 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1284 if (cur_drv
->sect
>= cur_drv
->last_sect
||
1285 cur_drv
->sect
== fdctrl
->eot
) {
1287 if (FD_MULTI_TRACK(fdctrl
->data_state
)) {
1288 if (cur_drv
->head
== 0 &&
1289 (cur_drv
->flags
& FDISK_DBL_SIDES
) != 0) {
1294 if ((cur_drv
->flags
& FDISK_DBL_SIDES
) == 0)
1301 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1302 cur_drv
->head
, cur_drv
->track
,
1303 cur_drv
->sect
, fd_sector(cur_drv
));
1310 len
= fdctrl
->data_pos
- start_pos
;
1311 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1312 fdctrl
->data_pos
, len
, fdctrl
->data_len
);
1313 if (fdctrl
->data_dir
== FD_DIR_SCANE
||
1314 fdctrl
->data_dir
== FD_DIR_SCANL
||
1315 fdctrl
->data_dir
== FD_DIR_SCANH
)
1317 if (FD_DID_SEEK(fdctrl
->data_state
))
1318 status0
|= FD_SR0_SEEK
;
1319 fdctrl
->data_len
-= len
;
1320 // if (fdctrl->data_len == 0)
1321 fdctrl_stop_transfer(fdctrl
, status0
, status1
, status2
);
1327 /* Data register : 0x05 */
1328 static uint32_t fdctrl_read_data (fdctrl_t
*fdctrl
)
1331 uint32_t retval
= 0;
1334 cur_drv
= get_cur_drv(fdctrl
);
1335 fdctrl
->state
&= ~FD_CTRL_SLEEP
;
1336 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_CMD
) {
1337 FLOPPY_ERROR("can't read data in CMD state\n");
1340 pos
= fdctrl
->data_pos
;
1341 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
) {
1342 pos
%= FD_SECTOR_LEN
;
1344 len
= fdctrl
->data_len
- fdctrl
->data_pos
;
1345 if (len
> FD_SECTOR_LEN
)
1346 len
= FD_SECTOR_LEN
;
1347 bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1);
1350 retval
= fdctrl
->fifo
[pos
];
1351 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1352 fdctrl
->data_pos
= 0;
1353 /* Switch from transfer mode to status mode
1354 * then from status mode to command mode
1356 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
) {
1357 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1359 fdctrl_reset_fifo(fdctrl
);
1360 fdctrl_reset_irq(fdctrl
);
1363 FLOPPY_DPRINTF("data register: 0x%02x\n", retval
);
1368 static void fdctrl_format_sector (fdctrl_t
*fdctrl
)
1374 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1375 cur_drv
= get_cur_drv(fdctrl
);
1376 kt
= fdctrl
->fifo
[6];
1377 kh
= fdctrl
->fifo
[7];
1378 ks
= fdctrl
->fifo
[8];
1379 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1380 fdctrl
->cur_drv
, kh
, kt
, ks
,
1381 _fd_sector(kh
, kt
, ks
, cur_drv
->last_sect
));
1383 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1386 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1387 fdctrl
->fifo
[3] = kt
;
1388 fdctrl
->fifo
[4] = kh
;
1389 fdctrl
->fifo
[5] = ks
;
1393 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x80, 0x00);
1394 fdctrl
->fifo
[3] = kt
;
1395 fdctrl
->fifo
[4] = kh
;
1396 fdctrl
->fifo
[5] = ks
;
1399 /* No seek enabled */
1400 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1401 fdctrl
->fifo
[3] = kt
;
1402 fdctrl
->fifo
[4] = kh
;
1403 fdctrl
->fifo
[5] = ks
;
1407 fdctrl
->data_state
|= FD_STATE_SEEK
;
1412 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1413 if (cur_drv
->bs
== NULL
||
1414 bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1415 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv
));
1416 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1418 if (cur_drv
->sect
== cur_drv
->last_sect
) {
1419 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1420 /* Last sector done */
1421 if (FD_DID_SEEK(fdctrl
->data_state
))
1422 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1424 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1427 fdctrl
->data_pos
= 0;
1428 fdctrl
->data_len
= 4;
1433 static void fdctrl_write_data (fdctrl_t
*fdctrl
, uint32_t value
)
1437 cur_drv
= get_cur_drv(fdctrl
);
1439 if (fdctrl
->state
& FD_CTRL_RESET
) {
1440 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1443 fdctrl
->state
&= ~FD_CTRL_SLEEP
;
1444 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_STATUS
) {
1445 FLOPPY_ERROR("can't write data in status mode\n");
1448 /* Is it write command time ? */
1449 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
) {
1450 /* FIFO data write */
1451 fdctrl
->fifo
[fdctrl
->data_pos
++] = value
;
1452 if (fdctrl
->data_pos
% FD_SECTOR_LEN
== (FD_SECTOR_LEN
- 1) ||
1453 fdctrl
->data_pos
== fdctrl
->data_len
) {
1454 bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1);
1456 /* Switch from transfer mode to status mode
1457 * then from status mode to command mode
1459 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
)
1460 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1463 if (fdctrl
->data_pos
== 0) {
1465 switch (value
& 0x5F) {
1468 FLOPPY_DPRINTF("READ command\n");
1469 /* 8 parameters cmd */
1470 fdctrl
->data_len
= 9;
1472 case FD_CMD_READ_DELETED
:
1473 /* READ_DELETED variants */
1474 FLOPPY_DPRINTF("READ_DELETED command\n");
1475 /* 8 parameters cmd */
1476 fdctrl
->data_len
= 9;
1478 case FD_CMD_SCAN_EQUAL
:
1479 /* SCAN_EQUAL variants */
1480 FLOPPY_DPRINTF("SCAN_EQUAL command\n");
1481 /* 8 parameters cmd */
1482 fdctrl
->data_len
= 9;
1485 /* VERIFY variants */
1486 FLOPPY_DPRINTF("VERIFY command\n");
1487 /* 8 parameters cmd */
1488 fdctrl
->data_len
= 9;
1490 case FD_CMD_SCAN_LOW_OR_EQUAL
:
1491 /* SCAN_LOW_OR_EQUAL variants */
1492 FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
1493 /* 8 parameters cmd */
1494 fdctrl
->data_len
= 9;
1496 case FD_CMD_SCAN_HIGH_OR_EQUAL
:
1497 /* SCAN_HIGH_OR_EQUAL variants */
1498 FLOPPY_DPRINTF("SCAN_HIGH_OR_EQUAL command\n");
1499 /* 8 parameters cmd */
1500 fdctrl
->data_len
= 9;
1505 switch (value
& 0x7F) {
1507 /* WRITE variants */
1508 FLOPPY_DPRINTF("WRITE command\n");
1509 /* 8 parameters cmd */
1510 fdctrl
->data_len
= 9;
1512 case FD_CMD_WRITE_DELETED
:
1513 /* WRITE_DELETED variants */
1514 FLOPPY_DPRINTF("WRITE_DELETED command\n");
1515 /* 8 parameters cmd */
1516 fdctrl
->data_len
= 9;
1522 case FD_CMD_SPECIFY
:
1524 FLOPPY_DPRINTF("SPECIFY command\n");
1525 /* 1 parameter cmd */
1526 fdctrl
->data_len
= 3;
1528 case FD_CMD_SENSE_DRIVE_STATUS
:
1529 /* SENSE_DRIVE_STATUS */
1530 FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
1531 /* 1 parameter cmd */
1532 fdctrl
->data_len
= 2;
1534 case FD_CMD_RECALIBRATE
:
1536 FLOPPY_DPRINTF("RECALIBRATE command\n");
1537 /* 1 parameter cmd */
1538 fdctrl
->data_len
= 2;
1540 case FD_CMD_SENSE_INTERRUPT_STATUS
:
1541 /* SENSE_INTERRUPT_STATUS */
1542 FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
1543 fdctrl
->int_status
);
1544 /* No parameters cmd: returns status if no interrupt */
1547 fdctrl
->int_status
| (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
1549 /* XXX: int_status handling is broken for read/write
1550 commands, so we do this hack. It should be suppressed
1553 0x20 | (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
1555 fdctrl
->fifo
[1] = cur_drv
->track
;
1556 fdctrl_set_fifo(fdctrl
, 2, 0);
1557 fdctrl_reset_irq(fdctrl
);
1558 fdctrl
->int_status
= FD_SR0_RDYCHG
;
1560 case FD_CMD_DUMPREG
:
1562 FLOPPY_DPRINTF("DUMPREG command\n");
1563 /* Drives position */
1564 fdctrl
->fifo
[0] = drv0(fdctrl
)->track
;
1565 fdctrl
->fifo
[1] = drv1(fdctrl
)->track
;
1566 fdctrl
->fifo
[2] = 0;
1567 fdctrl
->fifo
[3] = 0;
1569 fdctrl
->fifo
[4] = fdctrl
->timer0
;
1570 fdctrl
->fifo
[5] = (fdctrl
->timer1
<< 1) | fdctrl
->dma_en
;
1571 fdctrl
->fifo
[6] = cur_drv
->last_sect
;
1572 fdctrl
->fifo
[7] = (fdctrl
->lock
<< 7) |
1573 (cur_drv
->perpendicular
<< 2);
1574 fdctrl
->fifo
[8] = fdctrl
->config
;
1575 fdctrl
->fifo
[9] = fdctrl
->precomp_trk
;
1576 fdctrl_set_fifo(fdctrl
, 10, 0);
1580 FLOPPY_DPRINTF("SEEK command\n");
1581 /* 2 parameters cmd */
1582 fdctrl
->data_len
= 3;
1584 case FD_CMD_VERSION
:
1586 FLOPPY_DPRINTF("VERSION command\n");
1587 /* No parameters cmd */
1588 /* Controller's version */
1589 fdctrl
->fifo
[0] = fdctrl
->version
;
1590 fdctrl_set_fifo(fdctrl
, 1, 1);
1592 case FD_CMD_PERPENDICULAR_MODE
:
1593 /* PERPENDICULAR_MODE */
1594 FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
1595 /* 1 parameter cmd */
1596 fdctrl
->data_len
= 2;
1598 case FD_CMD_CONFIGURE
:
1600 FLOPPY_DPRINTF("CONFIGURE command\n");
1601 /* 3 parameters cmd */
1602 fdctrl
->data_len
= 4;
1606 FLOPPY_DPRINTF("UNLOCK command\n");
1607 /* No parameters cmd */
1609 fdctrl
->fifo
[0] = 0;
1610 fdctrl_set_fifo(fdctrl
, 1, 0);
1612 case FD_CMD_POWERDOWN_MODE
:
1613 /* POWERDOWN_MODE */
1614 FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
1615 /* 2 parameters cmd */
1616 fdctrl
->data_len
= 3;
1618 case FD_CMD_PART_ID
:
1620 FLOPPY_DPRINTF("PART_ID command\n");
1621 /* No parameters cmd */
1622 fdctrl
->fifo
[0] = 0x41; /* Stepping 1 */
1623 fdctrl_set_fifo(fdctrl
, 1, 0);
1627 FLOPPY_DPRINTF("SAVE command\n");
1628 /* No parameters cmd */
1629 fdctrl
->fifo
[0] = 0;
1630 fdctrl
->fifo
[1] = 0;
1631 /* Drives position */
1632 fdctrl
->fifo
[2] = drv0(fdctrl
)->track
;
1633 fdctrl
->fifo
[3] = drv1(fdctrl
)->track
;
1634 fdctrl
->fifo
[4] = 0;
1635 fdctrl
->fifo
[5] = 0;
1637 fdctrl
->fifo
[6] = fdctrl
->timer0
;
1638 fdctrl
->fifo
[7] = fdctrl
->timer1
;
1639 fdctrl
->fifo
[8] = cur_drv
->last_sect
;
1640 fdctrl
->fifo
[9] = (fdctrl
->lock
<< 7) |
1641 (cur_drv
->perpendicular
<< 2);
1642 fdctrl
->fifo
[10] = fdctrl
->config
;
1643 fdctrl
->fifo
[11] = fdctrl
->precomp_trk
;
1644 fdctrl
->fifo
[12] = fdctrl
->pwrd
;
1645 fdctrl
->fifo
[13] = 0;
1646 fdctrl
->fifo
[14] = 0;
1647 fdctrl_set_fifo(fdctrl
, 15, 1);
1651 FLOPPY_DPRINTF("OPTION command\n");
1652 /* 1 parameter cmd */
1653 fdctrl
->data_len
= 2;
1655 case FD_CMD_READ_TRACK
:
1657 FLOPPY_DPRINTF("READ_TRACK command\n");
1658 /* 8 parameters cmd */
1659 fdctrl
->data_len
= 9;
1661 case FD_CMD_READ_ID
:
1663 FLOPPY_DPRINTF("READ_ID command\n");
1664 /* 1 parameter cmd */
1665 fdctrl
->data_len
= 2;
1667 case FD_CMD_RESTORE
:
1669 FLOPPY_DPRINTF("RESTORE command\n");
1670 /* 17 parameters cmd */
1671 fdctrl
->data_len
= 18;
1673 case FD_CMD_FORMAT_TRACK
:
1675 FLOPPY_DPRINTF("FORMAT_TRACK command\n");
1676 /* 5 parameters cmd */
1677 fdctrl
->data_len
= 6;
1679 case FD_CMD_DRIVE_SPECIFICATION_COMMAND
:
1680 /* DRIVE_SPECIFICATION_COMMAND */
1681 FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
1682 /* 5 parameters cmd */
1683 fdctrl
->data_len
= 6;
1685 case FD_CMD_RELATIVE_SEEK_OUT
:
1686 /* RELATIVE_SEEK_OUT */
1687 FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
1688 /* 2 parameters cmd */
1689 fdctrl
->data_len
= 3;
1693 FLOPPY_DPRINTF("LOCK command\n");
1694 /* No parameters cmd */
1696 fdctrl
->fifo
[0] = 0x10;
1697 fdctrl_set_fifo(fdctrl
, 1, 1);
1699 case FD_CMD_FORMAT_AND_WRITE
:
1700 /* FORMAT_AND_WRITE */
1701 FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
1702 /* 10 parameters cmd */
1703 fdctrl
->data_len
= 11;
1705 case FD_CMD_RELATIVE_SEEK_IN
:
1706 /* RELATIVE_SEEK_IN */
1707 FLOPPY_DPRINTF("RELATIVE_SEEK_IN command\n");
1708 /* 2 parameters cmd */
1709 fdctrl
->data_len
= 3;
1712 /* Unknown command */
1713 FLOPPY_ERROR("unknown command: 0x%02x\n", value
);
1714 fdctrl_unimplemented(fdctrl
);
1719 FLOPPY_DPRINTF("%s: %02x\n", __func__
, value
);
1720 fdctrl
->fifo
[fdctrl
->data_pos
] = value
;
1721 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1722 /* We now have all parameters
1723 * and will be able to treat the command
1725 if (fdctrl
->data_state
& FD_STATE_FORMAT
) {
1726 fdctrl_format_sector(fdctrl
);
1729 switch (fdctrl
->fifo
[0] & 0x1F) {
1730 case FD_CMD_READ
& 0x1F:
1733 FLOPPY_DPRINTF("treat READ command\n");
1734 fdctrl_start_transfer(fdctrl
, FD_DIR_READ
);
1737 case FD_CMD_READ_DELETED
& 0x1F:
1738 /* READ_DELETED variants */
1739 // FLOPPY_DPRINTF("treat READ_DELETED command\n");
1740 FLOPPY_ERROR("treat READ_DELETED command\n");
1741 fdctrl_start_transfer_del(fdctrl
, FD_DIR_READ
);
1743 case FD_CMD_VERIFY
& 0x1F:
1744 /* VERIFY variants */
1745 // FLOPPY_DPRINTF("treat VERIFY command\n");
1746 FLOPPY_ERROR("treat VERIFY command\n");
1747 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1749 case FD_CMD_SCAN_EQUAL
& 0x1F:
1750 /* SCAN_EQUAL variants */
1751 // FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
1752 FLOPPY_ERROR("treat SCAN_EQUAL command\n");
1753 fdctrl_start_transfer(fdctrl
, FD_DIR_SCANE
);
1755 case FD_CMD_SCAN_LOW_OR_EQUAL
& 0x1F:
1756 /* SCAN_LOW_OR_EQUAL variants */
1757 // FLOPPY_DPRINTF("treat SCAN_LOW_OR_EQUAL command\n");
1758 FLOPPY_ERROR("treat SCAN_LOW_OR_EQUAL command\n");
1759 fdctrl_start_transfer(fdctrl
, FD_DIR_SCANL
);
1761 case FD_CMD_SCAN_HIGH_OR_EQUAL
& 0x1F:
1762 /* SCAN_HIGH_OR_EQUAL variants */
1763 // FLOPPY_DPRINTF("treat SCAN_HIGH_OR_EQUAL command\n");
1764 FLOPPY_ERROR("treat SCAN_HIGH_OR_EQUAL command\n");
1765 fdctrl_start_transfer(fdctrl
, FD_DIR_SCANH
);
1770 switch (fdctrl
->fifo
[0] & 0x3F) {
1771 case FD_CMD_WRITE
& 0x3F:
1772 /* WRITE variants */
1773 FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl
->fifo
[0]);
1774 fdctrl_start_transfer(fdctrl
, FD_DIR_WRITE
);
1776 case FD_CMD_WRITE_DELETED
& 0x3F:
1777 /* WRITE_DELETED variants */
1778 // FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
1779 FLOPPY_ERROR("treat WRITE_DELETED command\n");
1780 fdctrl_start_transfer_del(fdctrl
, FD_DIR_WRITE
);
1785 switch (fdctrl
->fifo
[0]) {
1786 case FD_CMD_SPECIFY
:
1788 FLOPPY_DPRINTF("treat SPECIFY command\n");
1789 fdctrl
->timer0
= (fdctrl
->fifo
[1] >> 4) & 0xF;
1790 fdctrl
->timer1
= fdctrl
->fifo
[2] >> 1;
1791 fdctrl
->dma_en
= 1 - (fdctrl
->fifo
[2] & 1) ;
1792 /* No result back */
1793 fdctrl_reset_fifo(fdctrl
);
1795 case FD_CMD_SENSE_DRIVE_STATUS
:
1796 /* SENSE_DRIVE_STATUS */
1797 FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
1798 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1799 cur_drv
= get_cur_drv(fdctrl
);
1800 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1801 /* 1 Byte status back */
1802 fdctrl
->fifo
[0] = (cur_drv
->ro
<< 6) |
1803 (cur_drv
->track
== 0 ? 0x10 : 0x00) |
1804 (cur_drv
->head
<< 2) |
1807 fdctrl_set_fifo(fdctrl
, 1, 0);
1809 case FD_CMD_RECALIBRATE
:
1811 FLOPPY_DPRINTF("treat RECALIBRATE command\n");
1812 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1813 cur_drv
= get_cur_drv(fdctrl
);
1814 fd_recalibrate(cur_drv
);
1815 fdctrl_reset_fifo(fdctrl
);
1816 /* Raise Interrupt */
1817 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1821 FLOPPY_DPRINTF("treat SEEK command\n");
1822 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1823 cur_drv
= get_cur_drv(fdctrl
);
1825 if (fdctrl
->fifo
[2] <= cur_drv
->track
)
1829 fdctrl_reset_fifo(fdctrl
);
1830 if (fdctrl
->fifo
[2] > cur_drv
->max_track
) {
1831 fdctrl_raise_irq(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
);
1833 cur_drv
->track
= fdctrl
->fifo
[2];
1834 /* Raise Interrupt */
1835 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1838 case FD_CMD_PERPENDICULAR_MODE
:
1839 /* PERPENDICULAR_MODE */
1840 FLOPPY_DPRINTF("treat PERPENDICULAR_MODE command\n");
1841 if (fdctrl
->fifo
[1] & 0x80)
1842 cur_drv
->perpendicular
= fdctrl
->fifo
[1] & 0x7;
1843 /* No result back */
1844 fdctrl_reset_fifo(fdctrl
);
1846 case FD_CMD_CONFIGURE
:
1848 FLOPPY_DPRINTF("treat CONFIGURE command\n");
1849 fdctrl
->config
= fdctrl
->fifo
[2];
1850 fdctrl
->precomp_trk
= fdctrl
->fifo
[3];
1851 /* No result back */
1852 fdctrl_reset_fifo(fdctrl
);
1854 case FD_CMD_POWERDOWN_MODE
:
1855 /* POWERDOWN_MODE */
1856 FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
1857 fdctrl
->pwrd
= fdctrl
->fifo
[1];
1858 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1859 fdctrl_set_fifo(fdctrl
, 1, 1);
1863 FLOPPY_DPRINTF("treat OPTION command\n");
1864 /* No result back */
1865 fdctrl_reset_fifo(fdctrl
);
1867 case FD_CMD_READ_TRACK
:
1869 FLOPPY_DPRINTF("treat READ_TRACK command\n");
1870 FLOPPY_ERROR("treat READ_TRACK command\n");
1871 fdctrl_start_transfer(fdctrl
, FD_DIR_READ
);
1873 case FD_CMD_READ_ID
:
1875 FLOPPY_DPRINTF("treat READ_ID command\n");
1876 /* XXX: should set main status register to busy */
1877 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1878 qemu_mod_timer(fdctrl
->result_timer
,
1879 qemu_get_clock(vm_clock
) + (ticks_per_sec
/ 50));
1881 case FD_CMD_RESTORE
:
1883 FLOPPY_DPRINTF("treat RESTORE command\n");
1884 /* Drives position */
1885 drv0(fdctrl
)->track
= fdctrl
->fifo
[3];
1886 drv1(fdctrl
)->track
= fdctrl
->fifo
[4];
1888 fdctrl
->timer0
= fdctrl
->fifo
[7];
1889 fdctrl
->timer1
= fdctrl
->fifo
[8];
1890 cur_drv
->last_sect
= fdctrl
->fifo
[9];
1891 fdctrl
->lock
= fdctrl
->fifo
[10] >> 7;
1892 cur_drv
->perpendicular
= (fdctrl
->fifo
[10] >> 2) & 0xF;
1893 fdctrl
->config
= fdctrl
->fifo
[11];
1894 fdctrl
->precomp_trk
= fdctrl
->fifo
[12];
1895 fdctrl
->pwrd
= fdctrl
->fifo
[13];
1896 fdctrl_reset_fifo(fdctrl
);
1898 case FD_CMD_FORMAT_TRACK
:
1900 FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
1901 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1902 cur_drv
= get_cur_drv(fdctrl
);
1903 fdctrl
->data_state
|= FD_STATE_FORMAT
;
1904 if (fdctrl
->fifo
[0] & 0x80)
1905 fdctrl
->data_state
|= FD_STATE_MULTI
;
1907 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1908 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1910 fdctrl
->fifo
[2] > 7 ? 16384 : 128 << fdctrl
->fifo
[2];
1912 cur_drv
->last_sect
=
1913 cur_drv
->flags
& FDISK_DBL_SIDES
? fdctrl
->fifo
[3] :
1914 fdctrl
->fifo
[3] / 2;
1916 cur_drv
->last_sect
= fdctrl
->fifo
[3];
1918 /* TODO: implement format using DMA expected by the Bochs BIOS
1919 * and Linux fdformat (read 3 bytes per sector via DMA and fill
1920 * the sector with the specified fill byte
1922 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1923 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1925 case FD_CMD_DRIVE_SPECIFICATION_COMMAND
:
1926 /* DRIVE_SPECIFICATION_COMMAND */
1927 FLOPPY_DPRINTF("treat DRIVE_SPECIFICATION_COMMAND command\n");
1928 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x80) {
1929 /* Command parameters done */
1930 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x40) {
1931 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1932 fdctrl
->fifo
[2] = 0;
1933 fdctrl
->fifo
[3] = 0;
1934 fdctrl_set_fifo(fdctrl
, 4, 1);
1936 fdctrl_reset_fifo(fdctrl
);
1938 } else if (fdctrl
->data_len
> 7) {
1940 fdctrl
->fifo
[0] = 0x80 |
1941 (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
1942 fdctrl_set_fifo(fdctrl
, 1, 1);
1945 case FD_CMD_RELATIVE_SEEK_OUT
:
1946 /* RELATIVE_SEEK_OUT */
1947 FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
1948 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1949 cur_drv
= get_cur_drv(fdctrl
);
1952 if (fdctrl
->fifo
[2] + cur_drv
->track
>= cur_drv
->max_track
) {
1953 cur_drv
->track
= cur_drv
->max_track
- 1;
1955 cur_drv
->track
+= fdctrl
->fifo
[2];
1957 fdctrl_reset_fifo(fdctrl
);
1958 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1960 case FD_CMD_FORMAT_AND_WRITE
:
1961 /* FORMAT_AND_WRITE */
1962 FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
1963 FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
1964 fdctrl_unimplemented(fdctrl
);
1966 case FD_CMD_RELATIVE_SEEK_IN
:
1967 /* RELATIVE_SEEK_IN */
1968 FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
1969 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1970 cur_drv
= get_cur_drv(fdctrl
);
1973 if (fdctrl
->fifo
[2] > cur_drv
->track
) {
1976 cur_drv
->track
-= fdctrl
->fifo
[2];
1978 fdctrl_reset_fifo(fdctrl
);
1979 /* Raise Interrupt */
1980 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1986 static void fdctrl_result_timer(void *opaque
)
1988 fdctrl_t
*fdctrl
= opaque
;
1989 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1991 /* Pretend we are spinning.
1992 * This is needed for Coherent, which uses READ ID to check for
1993 * sector interleaving.
1995 if (cur_drv
->last_sect
!= 0) {
1996 cur_drv
->sect
= (cur_drv
->sect
% cur_drv
->last_sect
) + 1;
1998 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);