2 * QEMU Floppy disk emulator (Intel 82078)
4 * Copyright (c) 2003, 2007 Jocelyn Mayer
5 * Copyright (c) 2008 Hervé Poussineau
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 * The controller is used in Sun4m systems in a slightly different
27 * way. There are changes in DOR register and DMA is not available.
30 #include "qemu/osdep.h"
32 #include "hw/block/fdc.h"
33 #include "qapi/error.h"
34 #include "qemu/error-report.h"
35 #include "qemu/timer.h"
36 #include "hw/isa/isa.h"
37 #include "hw/sysbus.h"
38 #include "hw/block/block.h"
39 #include "sysemu/block-backend.h"
40 #include "sysemu/blockdev.h"
41 #include "sysemu/sysemu.h"
43 #include "qemu/module.h"
46 /********************************************************/
47 /* debug Floppy devices */
49 #define DEBUG_FLOPPY 0
51 #define FLOPPY_DPRINTF(fmt, ...) \
54 fprintf(stderr, "FLOPPY: " fmt , ## __VA_ARGS__); \
59 /********************************************************/
62 #define TYPE_FLOPPY_BUS "floppy-bus"
63 #define FLOPPY_BUS(obj) OBJECT_CHECK(FloppyBus, (obj), TYPE_FLOPPY_BUS)
65 typedef struct FDCtrl FDCtrl
;
66 typedef struct FDrive FDrive
;
67 static FDrive
*get_drv(FDCtrl
*fdctrl
, int unit
);
69 typedef struct FloppyBus
{
74 static const TypeInfo floppy_bus_info
= {
75 .name
= TYPE_FLOPPY_BUS
,
77 .instance_size
= sizeof(FloppyBus
),
80 static void floppy_bus_create(FDCtrl
*fdc
, FloppyBus
*bus
, DeviceState
*dev
)
82 qbus_create_inplace(bus
, sizeof(FloppyBus
), TYPE_FLOPPY_BUS
, dev
, NULL
);
87 /********************************************************/
88 /* Floppy drive emulation */
90 typedef enum FDriveRate
{
91 FDRIVE_RATE_500K
= 0x00, /* 500 Kbps */
92 FDRIVE_RATE_300K
= 0x01, /* 300 Kbps */
93 FDRIVE_RATE_250K
= 0x02, /* 250 Kbps */
94 FDRIVE_RATE_1M
= 0x03, /* 1 Mbps */
97 typedef enum FDriveSize
{
103 typedef struct FDFormat
{
104 FloppyDriveType drive
;
111 /* In many cases, the total sector size of a format is enough to uniquely
112 * identify it. However, there are some total sector collisions between
113 * formats of different physical size, and these are noted below by
114 * highlighting the total sector size for entries with collisions. */
115 static const FDFormat fd_formats
[] = {
116 /* First entry is default format */
117 /* 1.44 MB 3"1/2 floppy disks */
118 { FLOPPY_DRIVE_TYPE_144
, 18, 80, 1, FDRIVE_RATE_500K
, }, /* 3.5" 2880 */
119 { FLOPPY_DRIVE_TYPE_144
, 20, 80, 1, FDRIVE_RATE_500K
, }, /* 3.5" 3200 */
120 { FLOPPY_DRIVE_TYPE_144
, 21, 80, 1, FDRIVE_RATE_500K
, },
121 { FLOPPY_DRIVE_TYPE_144
, 21, 82, 1, FDRIVE_RATE_500K
, },
122 { FLOPPY_DRIVE_TYPE_144
, 21, 83, 1, FDRIVE_RATE_500K
, },
123 { FLOPPY_DRIVE_TYPE_144
, 22, 80, 1, FDRIVE_RATE_500K
, },
124 { FLOPPY_DRIVE_TYPE_144
, 23, 80, 1, FDRIVE_RATE_500K
, },
125 { FLOPPY_DRIVE_TYPE_144
, 24, 80, 1, FDRIVE_RATE_500K
, },
126 /* 2.88 MB 3"1/2 floppy disks */
127 { FLOPPY_DRIVE_TYPE_288
, 36, 80, 1, FDRIVE_RATE_1M
, },
128 { FLOPPY_DRIVE_TYPE_288
, 39, 80, 1, FDRIVE_RATE_1M
, },
129 { FLOPPY_DRIVE_TYPE_288
, 40, 80, 1, FDRIVE_RATE_1M
, },
130 { FLOPPY_DRIVE_TYPE_288
, 44, 80, 1, FDRIVE_RATE_1M
, },
131 { FLOPPY_DRIVE_TYPE_288
, 48, 80, 1, FDRIVE_RATE_1M
, },
132 /* 720 kB 3"1/2 floppy disks */
133 { FLOPPY_DRIVE_TYPE_144
, 9, 80, 1, FDRIVE_RATE_250K
, }, /* 3.5" 1440 */
134 { FLOPPY_DRIVE_TYPE_144
, 10, 80, 1, FDRIVE_RATE_250K
, },
135 { FLOPPY_DRIVE_TYPE_144
, 10, 82, 1, FDRIVE_RATE_250K
, },
136 { FLOPPY_DRIVE_TYPE_144
, 10, 83, 1, FDRIVE_RATE_250K
, },
137 { FLOPPY_DRIVE_TYPE_144
, 13, 80, 1, FDRIVE_RATE_250K
, },
138 { FLOPPY_DRIVE_TYPE_144
, 14, 80, 1, FDRIVE_RATE_250K
, },
139 /* 1.2 MB 5"1/4 floppy disks */
140 { FLOPPY_DRIVE_TYPE_120
, 15, 80, 1, FDRIVE_RATE_500K
, },
141 { FLOPPY_DRIVE_TYPE_120
, 18, 80, 1, FDRIVE_RATE_500K
, }, /* 5.25" 2880 */
142 { FLOPPY_DRIVE_TYPE_120
, 18, 82, 1, FDRIVE_RATE_500K
, },
143 { FLOPPY_DRIVE_TYPE_120
, 18, 83, 1, FDRIVE_RATE_500K
, },
144 { FLOPPY_DRIVE_TYPE_120
, 20, 80, 1, FDRIVE_RATE_500K
, }, /* 5.25" 3200 */
145 /* 720 kB 5"1/4 floppy disks */
146 { FLOPPY_DRIVE_TYPE_120
, 9, 80, 1, FDRIVE_RATE_250K
, }, /* 5.25" 1440 */
147 { FLOPPY_DRIVE_TYPE_120
, 11, 80, 1, FDRIVE_RATE_250K
, },
148 /* 360 kB 5"1/4 floppy disks */
149 { FLOPPY_DRIVE_TYPE_120
, 9, 40, 1, FDRIVE_RATE_300K
, }, /* 5.25" 720 */
150 { FLOPPY_DRIVE_TYPE_120
, 9, 40, 0, FDRIVE_RATE_300K
, },
151 { FLOPPY_DRIVE_TYPE_120
, 10, 41, 1, FDRIVE_RATE_300K
, },
152 { FLOPPY_DRIVE_TYPE_120
, 10, 42, 1, FDRIVE_RATE_300K
, },
153 /* 320 kB 5"1/4 floppy disks */
154 { FLOPPY_DRIVE_TYPE_120
, 8, 40, 1, FDRIVE_RATE_250K
, },
155 { FLOPPY_DRIVE_TYPE_120
, 8, 40, 0, FDRIVE_RATE_250K
, },
156 /* 360 kB must match 5"1/4 better than 3"1/2... */
157 { FLOPPY_DRIVE_TYPE_144
, 9, 80, 0, FDRIVE_RATE_250K
, }, /* 3.5" 720 */
159 { FLOPPY_DRIVE_TYPE_NONE
, -1, -1, 0, 0, },
162 static FDriveSize
drive_size(FloppyDriveType drive
)
165 case FLOPPY_DRIVE_TYPE_120
:
166 return FDRIVE_SIZE_525
;
167 case FLOPPY_DRIVE_TYPE_144
:
168 case FLOPPY_DRIVE_TYPE_288
:
169 return FDRIVE_SIZE_350
;
171 return FDRIVE_SIZE_UNKNOWN
;
175 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
176 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
178 /* Will always be a fixed parameter for us */
179 #define FD_SECTOR_LEN 512
180 #define FD_SECTOR_SC 2 /* Sector size code */
181 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
183 /* Floppy disk drive emulation */
184 typedef enum FDiskFlags
{
185 FDISK_DBL_SIDES
= 0x01,
193 FloppyDriveType drive
; /* CMOS drive type */
194 uint8_t perpendicular
; /* 2.88 MB access mode */
200 FloppyDriveType disk
; /* Current disk type */
202 uint8_t last_sect
; /* Nb sector per track */
203 uint8_t max_track
; /* Nb of tracks */
204 uint16_t bps
; /* Bytes per sector */
205 uint8_t ro
; /* Is read-only */
206 uint8_t media_changed
; /* Is media changed */
207 uint8_t media_rate
; /* Data rate of medium */
209 bool media_validated
; /* Have we validated the media? */
213 static FloppyDriveType
get_fallback_drive_type(FDrive
*drv
);
215 /* Hack: FD_SEEK is expected to work on empty drives. However, QEMU
216 * currently goes through some pains to keep seeks within the bounds
217 * established by last_sect and max_track. Correcting this is difficult,
218 * as refactoring FDC code tends to expose nasty bugs in the Linux kernel.
220 * For now: allow empty drives to have large bounds so we can seek around,
221 * with the understanding that when a diskette is inserted, the bounds will
222 * properly tighten to match the geometry of that inserted medium.
224 static void fd_empty_seek_hack(FDrive
*drv
)
226 drv
->last_sect
= 0xFF;
227 drv
->max_track
= 0xFF;
230 static void fd_init(FDrive
*drv
)
233 drv
->perpendicular
= 0;
235 drv
->disk
= FLOPPY_DRIVE_TYPE_NONE
;
239 drv
->media_changed
= 1;
242 #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1)
244 static int fd_sector_calc(uint8_t head
, uint8_t track
, uint8_t sect
,
245 uint8_t last_sect
, uint8_t num_sides
)
247 return (((track
* num_sides
) + head
) * last_sect
) + sect
- 1;
250 /* Returns current position, in sectors, for given drive */
251 static int fd_sector(FDrive
*drv
)
253 return fd_sector_calc(drv
->head
, drv
->track
, drv
->sect
, drv
->last_sect
,
257 /* Returns current position, in bytes, for given drive */
258 static int fd_offset(FDrive
*drv
)
260 g_assert(fd_sector(drv
) < INT_MAX
>> BDRV_SECTOR_BITS
);
261 return fd_sector(drv
) << BDRV_SECTOR_BITS
;
264 /* Seek to a new position:
265 * returns 0 if already on right track
266 * returns 1 if track changed
267 * returns 2 if track is invalid
268 * returns 3 if sector is invalid
269 * returns 4 if seek is disabled
271 static int fd_seek(FDrive
*drv
, uint8_t head
, uint8_t track
, uint8_t sect
,
277 if (track
> drv
->max_track
||
278 (head
!= 0 && (drv
->flags
& FDISK_DBL_SIDES
) == 0)) {
279 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
280 head
, track
, sect
, 1,
281 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
282 drv
->max_track
, drv
->last_sect
);
285 if (sect
> drv
->last_sect
) {
286 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
287 head
, track
, sect
, 1,
288 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
289 drv
->max_track
, drv
->last_sect
);
292 sector
= fd_sector_calc(head
, track
, sect
, drv
->last_sect
, NUM_SIDES(drv
));
294 if (sector
!= fd_sector(drv
)) {
297 FLOPPY_DPRINTF("error: no implicit seek %d %02x %02x"
298 " (max=%d %02x %02x)\n",
299 head
, track
, sect
, 1, drv
->max_track
,
305 if (drv
->track
!= track
) {
306 if (drv
->blk
!= NULL
&& blk_is_inserted(drv
->blk
)) {
307 drv
->media_changed
= 0;
315 if (drv
->blk
== NULL
|| !blk_is_inserted(drv
->blk
)) {
322 /* Set drive back to track 0 */
323 static void fd_recalibrate(FDrive
*drv
)
325 FLOPPY_DPRINTF("recalibrate\n");
326 fd_seek(drv
, 0, 0, 1, 1);
330 * Determine geometry based on inserted diskette.
331 * Will not operate on an empty drive.
333 * @return: 0 on success, -1 if the drive is empty.
335 static int pick_geometry(FDrive
*drv
)
337 BlockBackend
*blk
= drv
->blk
;
338 const FDFormat
*parse
;
339 uint64_t nb_sectors
, size
;
341 int match
, size_match
, type_match
;
342 bool magic
= drv
->drive
== FLOPPY_DRIVE_TYPE_AUTO
;
344 /* We can only pick a geometry if we have a diskette. */
345 if (!drv
->blk
|| !blk_is_inserted(drv
->blk
) ||
346 drv
->drive
== FLOPPY_DRIVE_TYPE_NONE
)
351 /* We need to determine the likely geometry of the inserted medium.
352 * In order of preference, we look for:
353 * (1) The same drive type and number of sectors,
354 * (2) The same diskette size and number of sectors,
355 * (3) The same drive type.
357 * In all cases, matches that occur higher in the drive table will take
358 * precedence over matches that occur later in the table.
360 blk_get_geometry(blk
, &nb_sectors
);
361 match
= size_match
= type_match
= -1;
363 parse
= &fd_formats
[i
];
364 if (parse
->drive
== FLOPPY_DRIVE_TYPE_NONE
) {
367 size
= (parse
->max_head
+ 1) * parse
->max_track
* parse
->last_sect
;
368 if (nb_sectors
== size
) {
369 if (magic
|| parse
->drive
== drv
->drive
) {
370 /* (1) perfect match -- nb_sectors and drive type */
372 } else if (drive_size(parse
->drive
) == drive_size(drv
->drive
)) {
373 /* (2) size match -- nb_sectors and physical medium size */
374 match
= (match
== -1) ? i
: match
;
376 /* This is suspicious -- Did the user misconfigure? */
377 size_match
= (size_match
== -1) ? i
: size_match
;
379 } else if (type_match
== -1) {
380 if ((parse
->drive
== drv
->drive
) ||
381 (magic
&& (parse
->drive
== get_fallback_drive_type(drv
)))) {
382 /* (3) type match -- nb_sectors mismatch, but matches the type
383 * specified explicitly by the user, or matches the fallback
384 * default type when using the drive autodetect mechanism */
390 /* No exact match found */
392 if (size_match
!= -1) {
393 parse
= &fd_formats
[size_match
];
394 FLOPPY_DPRINTF("User requested floppy drive type '%s', "
395 "but inserted medium appears to be a "
396 "%"PRId64
" sector '%s' type\n",
397 FloppyDriveType_str(drv
->drive
),
399 FloppyDriveType_str(parse
->drive
));
401 assert(type_match
!= -1 && "misconfigured fd_format");
404 parse
= &(fd_formats
[match
]);
407 if (parse
->max_head
== 0) {
408 drv
->flags
&= ~FDISK_DBL_SIDES
;
410 drv
->flags
|= FDISK_DBL_SIDES
;
412 drv
->max_track
= parse
->max_track
;
413 drv
->last_sect
= parse
->last_sect
;
414 drv
->disk
= parse
->drive
;
415 drv
->media_rate
= parse
->rate
;
419 static void pick_drive_type(FDrive
*drv
)
421 if (drv
->drive
!= FLOPPY_DRIVE_TYPE_AUTO
) {
425 if (pick_geometry(drv
) == 0) {
426 drv
->drive
= drv
->disk
;
428 drv
->drive
= get_fallback_drive_type(drv
);
431 g_assert(drv
->drive
!= FLOPPY_DRIVE_TYPE_AUTO
);
434 /* Revalidate a disk drive after a disk change */
435 static void fd_revalidate(FDrive
*drv
)
439 FLOPPY_DPRINTF("revalidate\n");
440 if (drv
->blk
!= NULL
) {
441 drv
->ro
= blk_is_read_only(drv
->blk
);
442 if (!blk_is_inserted(drv
->blk
)) {
443 FLOPPY_DPRINTF("No disk in drive\n");
444 drv
->disk
= FLOPPY_DRIVE_TYPE_NONE
;
445 fd_empty_seek_hack(drv
);
446 } else if (!drv
->media_validated
) {
447 rc
= pick_geometry(drv
);
449 FLOPPY_DPRINTF("Could not validate floppy drive media");
451 drv
->media_validated
= true;
452 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n",
453 (drv
->flags
& FDISK_DBL_SIDES
) ? 2 : 1,
454 drv
->max_track
, drv
->last_sect
,
455 drv
->ro
? "ro" : "rw");
459 FLOPPY_DPRINTF("No drive connected\n");
462 drv
->flags
&= ~FDISK_DBL_SIDES
;
463 drv
->drive
= FLOPPY_DRIVE_TYPE_NONE
;
464 drv
->disk
= FLOPPY_DRIVE_TYPE_NONE
;
468 static void fd_change_cb(void *opaque
, bool load
, Error
**errp
)
470 FDrive
*drive
= opaque
;
473 blk_set_perm(drive
->blk
, 0, BLK_PERM_ALL
, &error_abort
);
475 if (!blkconf_apply_backend_options(drive
->conf
,
476 blk_is_read_only(drive
->blk
), false,
482 drive
->media_changed
= 1;
483 drive
->media_validated
= false;
484 fd_revalidate(drive
);
487 static const BlockDevOps fd_block_ops
= {
488 .change_media_cb
= fd_change_cb
,
492 #define TYPE_FLOPPY_DRIVE "floppy"
493 #define FLOPPY_DRIVE(obj) \
494 OBJECT_CHECK(FloppyDrive, (obj), TYPE_FLOPPY_DRIVE)
496 typedef struct FloppyDrive
{
500 FloppyDriveType type
;
503 static Property floppy_drive_properties
[] = {
504 DEFINE_PROP_UINT32("unit", FloppyDrive
, unit
, -1),
505 DEFINE_BLOCK_PROPERTIES(FloppyDrive
, conf
),
506 DEFINE_PROP_SIGNED("drive-type", FloppyDrive
, type
,
507 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
509 DEFINE_PROP_END_OF_LIST(),
512 static void floppy_drive_realize(DeviceState
*qdev
, Error
**errp
)
514 FloppyDrive
*dev
= FLOPPY_DRIVE(qdev
);
515 FloppyBus
*bus
= FLOPPY_BUS(qdev
->parent_bus
);
519 if (dev
->unit
== -1) {
520 for (dev
->unit
= 0; dev
->unit
< MAX_FD
; dev
->unit
++) {
521 drive
= get_drv(bus
->fdc
, dev
->unit
);
528 if (dev
->unit
>= MAX_FD
) {
529 error_setg(errp
, "Can't create floppy unit %d, bus supports "
530 "only %d units", dev
->unit
, MAX_FD
);
534 drive
= get_drv(bus
->fdc
, dev
->unit
);
536 error_setg(errp
, "Floppy unit %d is in use", dev
->unit
);
540 if (!dev
->conf
.blk
) {
541 /* Anonymous BlockBackend for an empty drive */
542 dev
->conf
.blk
= blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL
);
543 ret
= blk_attach_dev(dev
->conf
.blk
, qdev
);
547 blkconf_blocksizes(&dev
->conf
);
548 if (dev
->conf
.logical_block_size
!= 512 ||
549 dev
->conf
.physical_block_size
!= 512)
551 error_setg(errp
, "Physical and logical block size must "
552 "be 512 for floppy");
556 /* rerror/werror aren't supported by fdc and therefore not even registered
557 * with qdev. So set the defaults manually before they are used in
558 * blkconf_apply_backend_options(). */
559 dev
->conf
.rerror
= BLOCKDEV_ON_ERROR_AUTO
;
560 dev
->conf
.werror
= BLOCKDEV_ON_ERROR_AUTO
;
562 if (!blkconf_apply_backend_options(&dev
->conf
,
563 blk_is_read_only(dev
->conf
.blk
),
568 /* 'enospc' is the default for -drive, 'report' is what blk_new() gives us
569 * for empty drives. */
570 if (blk_get_on_error(dev
->conf
.blk
, 0) != BLOCKDEV_ON_ERROR_ENOSPC
&&
571 blk_get_on_error(dev
->conf
.blk
, 0) != BLOCKDEV_ON_ERROR_REPORT
) {
572 error_setg(errp
, "fdc doesn't support drive option werror");
575 if (blk_get_on_error(dev
->conf
.blk
, 1) != BLOCKDEV_ON_ERROR_REPORT
) {
576 error_setg(errp
, "fdc doesn't support drive option rerror");
580 drive
->conf
= &dev
->conf
;
581 drive
->blk
= dev
->conf
.blk
;
582 drive
->fdctrl
= bus
->fdc
;
585 blk_set_dev_ops(drive
->blk
, &fd_block_ops
, drive
);
587 /* Keep 'type' qdev property and FDrive->drive in sync */
588 drive
->drive
= dev
->type
;
589 pick_drive_type(drive
);
590 dev
->type
= drive
->drive
;
592 fd_revalidate(drive
);
595 static void floppy_drive_class_init(ObjectClass
*klass
, void *data
)
597 DeviceClass
*k
= DEVICE_CLASS(klass
);
598 k
->realize
= floppy_drive_realize
;
599 set_bit(DEVICE_CATEGORY_STORAGE
, k
->categories
);
600 k
->bus_type
= TYPE_FLOPPY_BUS
;
601 k
->props
= floppy_drive_properties
;
602 k
->desc
= "virtual floppy drive";
605 static const TypeInfo floppy_drive_info
= {
606 .name
= TYPE_FLOPPY_DRIVE
,
607 .parent
= TYPE_DEVICE
,
608 .instance_size
= sizeof(FloppyDrive
),
609 .class_init
= floppy_drive_class_init
,
612 /********************************************************/
613 /* Intel 82078 floppy disk controller emulation */
615 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
);
616 static void fdctrl_to_command_phase(FDCtrl
*fdctrl
);
617 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
618 int dma_pos
, int dma_len
);
619 static void fdctrl_raise_irq(FDCtrl
*fdctrl
);
620 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
);
622 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
);
623 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
);
624 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
);
625 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
);
626 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
);
627 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
);
628 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
);
629 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
);
630 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
);
631 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
);
632 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
);
633 static void fdctrl_write_ccr(FDCtrl
*fdctrl
, uint32_t value
);
645 FD_STATE_MULTI
= 0x01, /* multi track flag */
646 FD_STATE_FORMAT
= 0x02, /* format flag */
662 FD_CMD_READ_TRACK
= 0x02,
663 FD_CMD_SPECIFY
= 0x03,
664 FD_CMD_SENSE_DRIVE_STATUS
= 0x04,
667 FD_CMD_RECALIBRATE
= 0x07,
668 FD_CMD_SENSE_INTERRUPT_STATUS
= 0x08,
669 FD_CMD_WRITE_DELETED
= 0x09,
670 FD_CMD_READ_ID
= 0x0a,
671 FD_CMD_READ_DELETED
= 0x0c,
672 FD_CMD_FORMAT_TRACK
= 0x0d,
673 FD_CMD_DUMPREG
= 0x0e,
675 FD_CMD_VERSION
= 0x10,
676 FD_CMD_SCAN_EQUAL
= 0x11,
677 FD_CMD_PERPENDICULAR_MODE
= 0x12,
678 FD_CMD_CONFIGURE
= 0x13,
680 FD_CMD_VERIFY
= 0x16,
681 FD_CMD_POWERDOWN_MODE
= 0x17,
682 FD_CMD_PART_ID
= 0x18,
683 FD_CMD_SCAN_LOW_OR_EQUAL
= 0x19,
684 FD_CMD_SCAN_HIGH_OR_EQUAL
= 0x1d,
686 FD_CMD_OPTION
= 0x33,
687 FD_CMD_RESTORE
= 0x4e,
688 FD_CMD_DRIVE_SPECIFICATION_COMMAND
= 0x8e,
689 FD_CMD_RELATIVE_SEEK_OUT
= 0x8f,
690 FD_CMD_FORMAT_AND_WRITE
= 0xcd,
691 FD_CMD_RELATIVE_SEEK_IN
= 0xcf,
695 FD_CONFIG_PRETRK
= 0xff, /* Pre-compensation set to track 0 */
696 FD_CONFIG_FIFOTHR
= 0x0f, /* FIFO threshold set to 1 byte */
697 FD_CONFIG_POLL
= 0x10, /* Poll enabled */
698 FD_CONFIG_EFIFO
= 0x20, /* FIFO disabled */
699 FD_CONFIG_EIS
= 0x40, /* No implied seeks */
708 FD_SR0_ABNTERM
= 0x40,
709 FD_SR0_INVCMD
= 0x80,
710 FD_SR0_RDYCHG
= 0xc0,
714 FD_SR1_MA
= 0x01, /* Missing address mark */
715 FD_SR1_NW
= 0x02, /* Not writable */
716 FD_SR1_EC
= 0x80, /* End of cylinder */
720 FD_SR2_SNS
= 0x04, /* Scan not satisfied */
721 FD_SR2_SEH
= 0x08, /* Scan equal hit */
732 FD_SRA_INTPEND
= 0x80,
746 FD_DOR_SELMASK
= 0x03,
748 FD_DOR_SELMASK
= 0x01,
750 FD_DOR_nRESET
= 0x04,
752 FD_DOR_MOTEN0
= 0x10,
753 FD_DOR_MOTEN1
= 0x20,
754 FD_DOR_MOTEN2
= 0x40,
755 FD_DOR_MOTEN3
= 0x80,
760 FD_TDR_BOOTSEL
= 0x0c,
762 FD_TDR_BOOTSEL
= 0x04,
767 FD_DSR_DRATEMASK
= 0x03,
768 FD_DSR_PWRDOWN
= 0x40,
769 FD_DSR_SWRESET
= 0x80,
773 FD_MSR_DRV0BUSY
= 0x01,
774 FD_MSR_DRV1BUSY
= 0x02,
775 FD_MSR_DRV2BUSY
= 0x04,
776 FD_MSR_DRV3BUSY
= 0x08,
777 FD_MSR_CMDBUSY
= 0x10,
778 FD_MSR_NONDMA
= 0x20,
784 FD_DIR_DSKCHG
= 0x80,
788 * See chapter 5.0 "Controller phases" of the spec:
791 * The host writes a command and its parameters into the FIFO. The command
792 * phase is completed when all parameters for the command have been supplied,
793 * and execution phase is entered.
796 * Data transfers, either DMA or non-DMA. For non-DMA transfers, the FIFO
797 * contains the payload now, otherwise it's unused. When all bytes of the
798 * required data have been transferred, the state is switched to either result
799 * phase (if the command produces status bytes) or directly back into the
800 * command phase for the next command.
803 * The host reads out the FIFO, which contains one or more result bytes now.
806 /* Only for migration: reconstruct phase from registers like qemu 2.3 */
807 FD_PHASE_RECONSTRUCT
= 0,
809 FD_PHASE_COMMAND
= 1,
810 FD_PHASE_EXECUTION
= 2,
814 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
815 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
820 /* Controller state */
821 QEMUTimer
*result_timer
;
825 /* Controller's identification */
831 uint8_t dor_vmstate
; /* only used as temp during vmstate */
846 uint8_t eot
; /* last wanted sector */
847 /* States kept only to be returned back */
848 /* precompensation */
852 /* Power down config (also with status regB access mode */
856 uint8_t num_floppies
;
857 FDrive drives
[MAX_FD
];
860 FloppyDriveType type
;
861 } qdev_for_drives
[MAX_FD
];
863 uint32_t check_media_rate
;
864 FloppyDriveType fallback
; /* type=auto failure fallback */
868 PortioList portio_list
;
871 static FloppyDriveType
get_fallback_drive_type(FDrive
*drv
)
873 return drv
->fdctrl
->fallback
;
876 #define TYPE_SYSBUS_FDC "base-sysbus-fdc"
877 #define SYSBUS_FDC(obj) OBJECT_CHECK(FDCtrlSysBus, (obj), TYPE_SYSBUS_FDC)
879 typedef struct FDCtrlSysBus
{
881 SysBusDevice parent_obj
;
887 #define ISA_FDC(obj) OBJECT_CHECK(FDCtrlISABus, (obj), TYPE_ISA_FDC)
889 typedef struct FDCtrlISABus
{
890 ISADevice parent_obj
;
900 static uint32_t fdctrl_read (void *opaque
, uint32_t reg
)
902 FDCtrl
*fdctrl
= opaque
;
908 retval
= fdctrl_read_statusA(fdctrl
);
911 retval
= fdctrl_read_statusB(fdctrl
);
914 retval
= fdctrl_read_dor(fdctrl
);
917 retval
= fdctrl_read_tape(fdctrl
);
920 retval
= fdctrl_read_main_status(fdctrl
);
923 retval
= fdctrl_read_data(fdctrl
);
926 retval
= fdctrl_read_dir(fdctrl
);
929 retval
= (uint32_t)(-1);
932 trace_fdc_ioport_read(reg
, retval
);
937 static void fdctrl_write (void *opaque
, uint32_t reg
, uint32_t value
)
939 FDCtrl
*fdctrl
= opaque
;
942 trace_fdc_ioport_write(reg
, value
);
945 fdctrl_write_dor(fdctrl
, value
);
948 fdctrl_write_tape(fdctrl
, value
);
951 fdctrl_write_rate(fdctrl
, value
);
954 fdctrl_write_data(fdctrl
, value
);
957 fdctrl_write_ccr(fdctrl
, value
);
964 static uint64_t fdctrl_read_mem (void *opaque
, hwaddr reg
,
967 return fdctrl_read(opaque
, (uint32_t)reg
);
970 static void fdctrl_write_mem (void *opaque
, hwaddr reg
,
971 uint64_t value
, unsigned size
)
973 fdctrl_write(opaque
, (uint32_t)reg
, value
);
976 static const MemoryRegionOps fdctrl_mem_ops
= {
977 .read
= fdctrl_read_mem
,
978 .write
= fdctrl_write_mem
,
979 .endianness
= DEVICE_NATIVE_ENDIAN
,
982 static const MemoryRegionOps fdctrl_mem_strict_ops
= {
983 .read
= fdctrl_read_mem
,
984 .write
= fdctrl_write_mem
,
985 .endianness
= DEVICE_NATIVE_ENDIAN
,
987 .min_access_size
= 1,
988 .max_access_size
= 1,
992 static bool fdrive_media_changed_needed(void *opaque
)
994 FDrive
*drive
= opaque
;
996 return (drive
->blk
!= NULL
&& drive
->media_changed
!= 1);
999 static const VMStateDescription vmstate_fdrive_media_changed
= {
1000 .name
= "fdrive/media_changed",
1002 .minimum_version_id
= 1,
1003 .needed
= fdrive_media_changed_needed
,
1004 .fields
= (VMStateField
[]) {
1005 VMSTATE_UINT8(media_changed
, FDrive
),
1006 VMSTATE_END_OF_LIST()
1010 static bool fdrive_media_rate_needed(void *opaque
)
1012 FDrive
*drive
= opaque
;
1014 return drive
->fdctrl
->check_media_rate
;
1017 static const VMStateDescription vmstate_fdrive_media_rate
= {
1018 .name
= "fdrive/media_rate",
1020 .minimum_version_id
= 1,
1021 .needed
= fdrive_media_rate_needed
,
1022 .fields
= (VMStateField
[]) {
1023 VMSTATE_UINT8(media_rate
, FDrive
),
1024 VMSTATE_END_OF_LIST()
1028 static bool fdrive_perpendicular_needed(void *opaque
)
1030 FDrive
*drive
= opaque
;
1032 return drive
->perpendicular
!= 0;
1035 static const VMStateDescription vmstate_fdrive_perpendicular
= {
1036 .name
= "fdrive/perpendicular",
1038 .minimum_version_id
= 1,
1039 .needed
= fdrive_perpendicular_needed
,
1040 .fields
= (VMStateField
[]) {
1041 VMSTATE_UINT8(perpendicular
, FDrive
),
1042 VMSTATE_END_OF_LIST()
1046 static int fdrive_post_load(void *opaque
, int version_id
)
1048 fd_revalidate(opaque
);
1052 static const VMStateDescription vmstate_fdrive
= {
1055 .minimum_version_id
= 1,
1056 .post_load
= fdrive_post_load
,
1057 .fields
= (VMStateField
[]) {
1058 VMSTATE_UINT8(head
, FDrive
),
1059 VMSTATE_UINT8(track
, FDrive
),
1060 VMSTATE_UINT8(sect
, FDrive
),
1061 VMSTATE_END_OF_LIST()
1063 .subsections
= (const VMStateDescription
*[]) {
1064 &vmstate_fdrive_media_changed
,
1065 &vmstate_fdrive_media_rate
,
1066 &vmstate_fdrive_perpendicular
,
1072 * Reconstructs the phase from register values according to the logic that was
1073 * implemented in qemu 2.3. This is the default value that is used if the phase
1074 * subsection is not present on migration.
1076 * Don't change this function to reflect newer qemu versions, it is part of
1077 * the migration ABI.
1079 static int reconstruct_phase(FDCtrl
*fdctrl
)
1081 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1082 return FD_PHASE_EXECUTION
;
1083 } else if ((fdctrl
->msr
& FD_MSR_RQM
) == 0) {
1084 /* qemu 2.3 disabled RQM only during DMA transfers */
1085 return FD_PHASE_EXECUTION
;
1086 } else if (fdctrl
->msr
& FD_MSR_DIO
) {
1087 return FD_PHASE_RESULT
;
1089 return FD_PHASE_COMMAND
;
1093 static int fdc_pre_save(void *opaque
)
1097 s
->dor_vmstate
= s
->dor
| GET_CUR_DRV(s
);
1102 static int fdc_pre_load(void *opaque
)
1105 s
->phase
= FD_PHASE_RECONSTRUCT
;
1109 static int fdc_post_load(void *opaque
, int version_id
)
1113 SET_CUR_DRV(s
, s
->dor_vmstate
& FD_DOR_SELMASK
);
1114 s
->dor
= s
->dor_vmstate
& ~FD_DOR_SELMASK
;
1116 if (s
->phase
== FD_PHASE_RECONSTRUCT
) {
1117 s
->phase
= reconstruct_phase(s
);
1123 static bool fdc_reset_sensei_needed(void *opaque
)
1127 return s
->reset_sensei
!= 0;
1130 static const VMStateDescription vmstate_fdc_reset_sensei
= {
1131 .name
= "fdc/reset_sensei",
1133 .minimum_version_id
= 1,
1134 .needed
= fdc_reset_sensei_needed
,
1135 .fields
= (VMStateField
[]) {
1136 VMSTATE_INT32(reset_sensei
, FDCtrl
),
1137 VMSTATE_END_OF_LIST()
1141 static bool fdc_result_timer_needed(void *opaque
)
1145 return timer_pending(s
->result_timer
);
1148 static const VMStateDescription vmstate_fdc_result_timer
= {
1149 .name
= "fdc/result_timer",
1151 .minimum_version_id
= 1,
1152 .needed
= fdc_result_timer_needed
,
1153 .fields
= (VMStateField
[]) {
1154 VMSTATE_TIMER_PTR(result_timer
, FDCtrl
),
1155 VMSTATE_END_OF_LIST()
1159 static bool fdc_phase_needed(void *opaque
)
1161 FDCtrl
*fdctrl
= opaque
;
1163 return reconstruct_phase(fdctrl
) != fdctrl
->phase
;
1166 static const VMStateDescription vmstate_fdc_phase
= {
1167 .name
= "fdc/phase",
1169 .minimum_version_id
= 1,
1170 .needed
= fdc_phase_needed
,
1171 .fields
= (VMStateField
[]) {
1172 VMSTATE_UINT8(phase
, FDCtrl
),
1173 VMSTATE_END_OF_LIST()
1177 static const VMStateDescription vmstate_fdc
= {
1180 .minimum_version_id
= 2,
1181 .pre_save
= fdc_pre_save
,
1182 .pre_load
= fdc_pre_load
,
1183 .post_load
= fdc_post_load
,
1184 .fields
= (VMStateField
[]) {
1185 /* Controller State */
1186 VMSTATE_UINT8(sra
, FDCtrl
),
1187 VMSTATE_UINT8(srb
, FDCtrl
),
1188 VMSTATE_UINT8(dor_vmstate
, FDCtrl
),
1189 VMSTATE_UINT8(tdr
, FDCtrl
),
1190 VMSTATE_UINT8(dsr
, FDCtrl
),
1191 VMSTATE_UINT8(msr
, FDCtrl
),
1192 VMSTATE_UINT8(status0
, FDCtrl
),
1193 VMSTATE_UINT8(status1
, FDCtrl
),
1194 VMSTATE_UINT8(status2
, FDCtrl
),
1196 VMSTATE_VARRAY_INT32(fifo
, FDCtrl
, fifo_size
, 0, vmstate_info_uint8
,
1198 VMSTATE_UINT32(data_pos
, FDCtrl
),
1199 VMSTATE_UINT32(data_len
, FDCtrl
),
1200 VMSTATE_UINT8(data_state
, FDCtrl
),
1201 VMSTATE_UINT8(data_dir
, FDCtrl
),
1202 VMSTATE_UINT8(eot
, FDCtrl
),
1203 /* States kept only to be returned back */
1204 VMSTATE_UINT8(timer0
, FDCtrl
),
1205 VMSTATE_UINT8(timer1
, FDCtrl
),
1206 VMSTATE_UINT8(precomp_trk
, FDCtrl
),
1207 VMSTATE_UINT8(config
, FDCtrl
),
1208 VMSTATE_UINT8(lock
, FDCtrl
),
1209 VMSTATE_UINT8(pwrd
, FDCtrl
),
1210 VMSTATE_UINT8_EQUAL(num_floppies
, FDCtrl
, NULL
),
1211 VMSTATE_STRUCT_ARRAY(drives
, FDCtrl
, MAX_FD
, 1,
1212 vmstate_fdrive
, FDrive
),
1213 VMSTATE_END_OF_LIST()
1215 .subsections
= (const VMStateDescription
*[]) {
1216 &vmstate_fdc_reset_sensei
,
1217 &vmstate_fdc_result_timer
,
1223 static void fdctrl_external_reset_sysbus(DeviceState
*d
)
1225 FDCtrlSysBus
*sys
= SYSBUS_FDC(d
);
1226 FDCtrl
*s
= &sys
->state
;
1231 static void fdctrl_external_reset_isa(DeviceState
*d
)
1233 FDCtrlISABus
*isa
= ISA_FDC(d
);
1234 FDCtrl
*s
= &isa
->state
;
1239 static void fdctrl_handle_tc(void *opaque
, int irq
, int level
)
1241 //FDCtrl *s = opaque;
1245 FLOPPY_DPRINTF("TC pulsed\n");
1249 /* Change IRQ state */
1250 static void fdctrl_reset_irq(FDCtrl
*fdctrl
)
1252 fdctrl
->status0
= 0;
1253 if (!(fdctrl
->sra
& FD_SRA_INTPEND
))
1255 FLOPPY_DPRINTF("Reset interrupt\n");
1256 qemu_set_irq(fdctrl
->irq
, 0);
1257 fdctrl
->sra
&= ~FD_SRA_INTPEND
;
1260 static void fdctrl_raise_irq(FDCtrl
*fdctrl
)
1262 if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
1263 qemu_set_irq(fdctrl
->irq
, 1);
1264 fdctrl
->sra
|= FD_SRA_INTPEND
;
1267 fdctrl
->reset_sensei
= 0;
1268 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl
->status0
);
1271 /* Reset controller */
1272 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
)
1276 FLOPPY_DPRINTF("reset controller\n");
1277 fdctrl_reset_irq(fdctrl
);
1278 /* Initialise controller */
1281 if (!fdctrl
->drives
[1].blk
) {
1282 fdctrl
->sra
|= FD_SRA_nDRV2
;
1284 fdctrl
->cur_drv
= 0;
1285 fdctrl
->dor
= FD_DOR_nRESET
;
1286 fdctrl
->dor
|= (fdctrl
->dma_chann
!= -1) ? FD_DOR_DMAEN
: 0;
1287 fdctrl
->msr
= FD_MSR_RQM
;
1288 fdctrl
->reset_sensei
= 0;
1289 timer_del(fdctrl
->result_timer
);
1291 fdctrl
->data_pos
= 0;
1292 fdctrl
->data_len
= 0;
1293 fdctrl
->data_state
= 0;
1294 fdctrl
->data_dir
= FD_DIR_WRITE
;
1295 for (i
= 0; i
< MAX_FD
; i
++)
1296 fd_recalibrate(&fdctrl
->drives
[i
]);
1297 fdctrl_to_command_phase(fdctrl
);
1299 fdctrl
->status0
|= FD_SR0_RDYCHG
;
1300 fdctrl_raise_irq(fdctrl
);
1301 fdctrl
->reset_sensei
= FD_RESET_SENSEI_COUNT
;
1305 static inline FDrive
*drv0(FDCtrl
*fdctrl
)
1307 return &fdctrl
->drives
[(fdctrl
->tdr
& FD_TDR_BOOTSEL
) >> 2];
1310 static inline FDrive
*drv1(FDCtrl
*fdctrl
)
1312 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (1 << 2))
1313 return &fdctrl
->drives
[1];
1315 return &fdctrl
->drives
[0];
1319 static inline FDrive
*drv2(FDCtrl
*fdctrl
)
1321 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (2 << 2))
1322 return &fdctrl
->drives
[2];
1324 return &fdctrl
->drives
[1];
1327 static inline FDrive
*drv3(FDCtrl
*fdctrl
)
1329 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (3 << 2))
1330 return &fdctrl
->drives
[3];
1332 return &fdctrl
->drives
[2];
1336 static FDrive
*get_drv(FDCtrl
*fdctrl
, int unit
)
1339 case 0: return drv0(fdctrl
);
1340 case 1: return drv1(fdctrl
);
1342 case 2: return drv2(fdctrl
);
1343 case 3: return drv3(fdctrl
);
1345 default: return NULL
;
1349 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
)
1351 return get_drv(fdctrl
, fdctrl
->cur_drv
);
1354 /* Status A register : 0x00 (read-only) */
1355 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
)
1357 uint32_t retval
= fdctrl
->sra
;
1359 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval
);
1364 /* Status B register : 0x01 (read-only) */
1365 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
)
1367 uint32_t retval
= fdctrl
->srb
;
1369 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval
);
1374 /* Digital output register : 0x02 */
1375 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
)
1377 uint32_t retval
= fdctrl
->dor
;
1379 /* Selected drive */
1380 retval
|= fdctrl
->cur_drv
;
1381 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval
);
1386 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
)
1388 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value
);
1391 if (value
& FD_DOR_MOTEN0
)
1392 fdctrl
->srb
|= FD_SRB_MTR0
;
1394 fdctrl
->srb
&= ~FD_SRB_MTR0
;
1395 if (value
& FD_DOR_MOTEN1
)
1396 fdctrl
->srb
|= FD_SRB_MTR1
;
1398 fdctrl
->srb
&= ~FD_SRB_MTR1
;
1402 fdctrl
->srb
|= FD_SRB_DR0
;
1404 fdctrl
->srb
&= ~FD_SRB_DR0
;
1407 if (!(value
& FD_DOR_nRESET
)) {
1408 if (fdctrl
->dor
& FD_DOR_nRESET
) {
1409 FLOPPY_DPRINTF("controller enter RESET state\n");
1412 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1413 FLOPPY_DPRINTF("controller out of RESET state\n");
1414 fdctrl_reset(fdctrl
, 1);
1415 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1418 /* Selected drive */
1419 fdctrl
->cur_drv
= value
& FD_DOR_SELMASK
;
1421 fdctrl
->dor
= value
;
1424 /* Tape drive register : 0x03 */
1425 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
)
1427 uint32_t retval
= fdctrl
->tdr
;
1429 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval
);
1434 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
)
1437 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1438 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1441 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value
);
1442 /* Disk boot selection indicator */
1443 fdctrl
->tdr
= value
& FD_TDR_BOOTSEL
;
1444 /* Tape indicators: never allow */
1447 /* Main status register : 0x04 (read) */
1448 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
)
1450 uint32_t retval
= fdctrl
->msr
;
1452 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1453 fdctrl
->dor
|= FD_DOR_nRESET
;
1455 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval
);
1460 /* Data select rate register : 0x04 (write) */
1461 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
)
1464 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1465 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1468 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value
);
1469 /* Reset: autoclear */
1470 if (value
& FD_DSR_SWRESET
) {
1471 fdctrl
->dor
&= ~FD_DOR_nRESET
;
1472 fdctrl_reset(fdctrl
, 1);
1473 fdctrl
->dor
|= FD_DOR_nRESET
;
1475 if (value
& FD_DSR_PWRDOWN
) {
1476 fdctrl_reset(fdctrl
, 1);
1478 fdctrl
->dsr
= value
;
1481 /* Configuration control register: 0x07 (write) */
1482 static void fdctrl_write_ccr(FDCtrl
*fdctrl
, uint32_t value
)
1485 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1486 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1489 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value
);
1491 /* Only the rate selection bits used in AT mode, and we
1492 * store those in the DSR.
1494 fdctrl
->dsr
= (fdctrl
->dsr
& ~FD_DSR_DRATEMASK
) |
1495 (value
& FD_DSR_DRATEMASK
);
1498 static int fdctrl_media_changed(FDrive
*drv
)
1500 return drv
->media_changed
;
1503 /* Digital input register : 0x07 (read-only) */
1504 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
)
1506 uint32_t retval
= 0;
1508 if (fdctrl_media_changed(get_cur_drv(fdctrl
))) {
1509 retval
|= FD_DIR_DSKCHG
;
1512 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval
);
1518 /* Clear the FIFO and update the state for receiving the next command */
1519 static void fdctrl_to_command_phase(FDCtrl
*fdctrl
)
1521 fdctrl
->phase
= FD_PHASE_COMMAND
;
1522 fdctrl
->data_dir
= FD_DIR_WRITE
;
1523 fdctrl
->data_pos
= 0;
1524 fdctrl
->data_len
= 1; /* Accept command byte, adjust for params later */
1525 fdctrl
->msr
&= ~(FD_MSR_CMDBUSY
| FD_MSR_DIO
);
1526 fdctrl
->msr
|= FD_MSR_RQM
;
1529 /* Update the state to allow the guest to read out the command status.
1530 * @fifo_len is the number of result bytes to be read out. */
1531 static void fdctrl_to_result_phase(FDCtrl
*fdctrl
, int fifo_len
)
1533 fdctrl
->phase
= FD_PHASE_RESULT
;
1534 fdctrl
->data_dir
= FD_DIR_READ
;
1535 fdctrl
->data_len
= fifo_len
;
1536 fdctrl
->data_pos
= 0;
1537 fdctrl
->msr
|= FD_MSR_CMDBUSY
| FD_MSR_RQM
| FD_MSR_DIO
;
1540 /* Set an error: unimplemented/unknown command */
1541 static void fdctrl_unimplemented(FDCtrl
*fdctrl
, int direction
)
1543 qemu_log_mask(LOG_UNIMP
, "fdc: unimplemented command 0x%02x\n",
1545 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
1546 fdctrl_to_result_phase(fdctrl
, 1);
1549 /* Seek to next sector
1550 * returns 0 when end of track reached (for DBL_SIDES on head 1)
1551 * otherwise returns 1
1553 static int fdctrl_seek_to_next_sect(FDCtrl
*fdctrl
, FDrive
*cur_drv
)
1555 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1556 cur_drv
->head
, cur_drv
->track
, cur_drv
->sect
,
1557 fd_sector(cur_drv
));
1558 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1560 uint8_t new_head
= cur_drv
->head
;
1561 uint8_t new_track
= cur_drv
->track
;
1562 uint8_t new_sect
= cur_drv
->sect
;
1566 if (new_sect
>= cur_drv
->last_sect
||
1567 new_sect
== fdctrl
->eot
) {
1569 if (FD_MULTI_TRACK(fdctrl
->data_state
)) {
1570 if (new_head
== 0 &&
1571 (cur_drv
->flags
& FDISK_DBL_SIDES
) != 0) {
1576 fdctrl
->status0
|= FD_SR0_SEEK
;
1577 if ((cur_drv
->flags
& FDISK_DBL_SIDES
) == 0) {
1582 fdctrl
->status0
|= FD_SR0_SEEK
;
1587 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1588 new_head
, new_track
, new_sect
, fd_sector(cur_drv
));
1593 fd_seek(cur_drv
, new_head
, new_track
, new_sect
, 1);
1597 /* Callback for transfer end (stop or abort) */
1598 static void fdctrl_stop_transfer(FDCtrl
*fdctrl
, uint8_t status0
,
1599 uint8_t status1
, uint8_t status2
)
1602 cur_drv
= get_cur_drv(fdctrl
);
1604 fdctrl
->status0
&= ~(FD_SR0_DS0
| FD_SR0_DS1
| FD_SR0_HEAD
);
1605 fdctrl
->status0
|= GET_CUR_DRV(fdctrl
);
1606 if (cur_drv
->head
) {
1607 fdctrl
->status0
|= FD_SR0_HEAD
;
1609 fdctrl
->status0
|= status0
;
1611 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1612 status0
, status1
, status2
, fdctrl
->status0
);
1613 fdctrl
->fifo
[0] = fdctrl
->status0
;
1614 fdctrl
->fifo
[1] = status1
;
1615 fdctrl
->fifo
[2] = status2
;
1616 fdctrl
->fifo
[3] = cur_drv
->track
;
1617 fdctrl
->fifo
[4] = cur_drv
->head
;
1618 fdctrl
->fifo
[5] = cur_drv
->sect
;
1619 fdctrl
->fifo
[6] = FD_SECTOR_SC
;
1620 fdctrl
->data_dir
= FD_DIR_READ
;
1621 if (fdctrl
->dma_chann
!= -1 && !(fdctrl
->msr
& FD_MSR_NONDMA
)) {
1622 IsaDmaClass
*k
= ISADMA_GET_CLASS(fdctrl
->dma
);
1623 k
->release_DREQ(fdctrl
->dma
, fdctrl
->dma_chann
);
1625 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
1626 fdctrl
->msr
&= ~FD_MSR_NONDMA
;
1628 fdctrl_to_result_phase(fdctrl
, 7);
1629 fdctrl_raise_irq(fdctrl
);
1632 /* Prepare a data transfer (either DMA or FIFO) */
1633 static void fdctrl_start_transfer(FDCtrl
*fdctrl
, int direction
)
1638 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1639 cur_drv
= get_cur_drv(fdctrl
);
1640 kt
= fdctrl
->fifo
[2];
1641 kh
= fdctrl
->fifo
[3];
1642 ks
= fdctrl
->fifo
[4];
1643 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1644 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1645 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1646 NUM_SIDES(cur_drv
)));
1647 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1650 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1651 fdctrl
->fifo
[3] = kt
;
1652 fdctrl
->fifo
[4] = kh
;
1653 fdctrl
->fifo
[5] = ks
;
1657 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1658 fdctrl
->fifo
[3] = kt
;
1659 fdctrl
->fifo
[4] = kh
;
1660 fdctrl
->fifo
[5] = ks
;
1663 /* No seek enabled */
1664 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1665 fdctrl
->fifo
[3] = kt
;
1666 fdctrl
->fifo
[4] = kh
;
1667 fdctrl
->fifo
[5] = ks
;
1670 fdctrl
->status0
|= FD_SR0_SEEK
;
1676 /* Check the data rate. If the programmed data rate does not match
1677 * the currently inserted medium, the operation has to fail. */
1678 if (fdctrl
->check_media_rate
&&
1679 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
1680 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1681 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
1682 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
1683 fdctrl
->fifo
[3] = kt
;
1684 fdctrl
->fifo
[4] = kh
;
1685 fdctrl
->fifo
[5] = ks
;
1689 /* Set the FIFO state */
1690 fdctrl
->data_dir
= direction
;
1691 fdctrl
->data_pos
= 0;
1692 assert(fdctrl
->msr
& FD_MSR_CMDBUSY
);
1693 if (fdctrl
->fifo
[0] & 0x80)
1694 fdctrl
->data_state
|= FD_STATE_MULTI
;
1696 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1697 if (fdctrl
->fifo
[5] == 0) {
1698 fdctrl
->data_len
= fdctrl
->fifo
[8];
1701 fdctrl
->data_len
= 128 << (fdctrl
->fifo
[5] > 7 ? 7 : fdctrl
->fifo
[5]);
1702 tmp
= (fdctrl
->fifo
[6] - ks
+ 1);
1703 if (fdctrl
->fifo
[0] & 0x80)
1704 tmp
+= fdctrl
->fifo
[6];
1705 fdctrl
->data_len
*= tmp
;
1707 fdctrl
->eot
= fdctrl
->fifo
[6];
1708 if (fdctrl
->dor
& FD_DOR_DMAEN
) {
1709 IsaDmaTransferMode dma_mode
;
1710 IsaDmaClass
*k
= ISADMA_GET_CLASS(fdctrl
->dma
);
1712 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1713 dma_mode
= k
->get_transfer_mode(fdctrl
->dma
, fdctrl
->dma_chann
);
1714 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1715 dma_mode
, direction
,
1716 (128 << fdctrl
->fifo
[5]) *
1717 (cur_drv
->last_sect
- ks
+ 1), fdctrl
->data_len
);
1718 switch (direction
) {
1722 dma_mode_ok
= (dma_mode
== ISADMA_TRANSFER_VERIFY
);
1725 dma_mode_ok
= (dma_mode
== ISADMA_TRANSFER_WRITE
);
1728 dma_mode_ok
= (dma_mode
== ISADMA_TRANSFER_READ
);
1734 dma_mode_ok
= false;
1738 /* No access is allowed until DMA transfer has completed */
1739 fdctrl
->msr
&= ~FD_MSR_RQM
;
1740 if (direction
!= FD_DIR_VERIFY
) {
1741 /* Now, we just have to wait for the DMA controller to
1744 k
->hold_DREQ(fdctrl
->dma
, fdctrl
->dma_chann
);
1745 k
->schedule(fdctrl
->dma
);
1747 /* Start transfer */
1748 fdctrl_transfer_handler(fdctrl
, fdctrl
->dma_chann
, 0,
1753 FLOPPY_DPRINTF("bad dma_mode=%d direction=%d\n", dma_mode
,
1757 FLOPPY_DPRINTF("start non-DMA transfer\n");
1758 fdctrl
->msr
|= FD_MSR_NONDMA
| FD_MSR_RQM
;
1759 if (direction
!= FD_DIR_WRITE
)
1760 fdctrl
->msr
|= FD_MSR_DIO
;
1761 /* IO based transfer: calculate len */
1762 fdctrl_raise_irq(fdctrl
);
1765 /* Prepare a transfer of deleted data */
1766 static void fdctrl_start_transfer_del(FDCtrl
*fdctrl
, int direction
)
1768 qemu_log_mask(LOG_UNIMP
, "fdctrl_start_transfer_del() unimplemented\n");
1770 /* We don't handle deleted data,
1771 * so we don't return *ANYTHING*
1773 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1776 /* handlers for DMA transfers */
1777 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
1778 int dma_pos
, int dma_len
)
1782 int len
, start_pos
, rel_pos
;
1783 uint8_t status0
= 0x00, status1
= 0x00, status2
= 0x00;
1787 if (fdctrl
->msr
& FD_MSR_RQM
) {
1788 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1791 k
= ISADMA_GET_CLASS(fdctrl
->dma
);
1792 cur_drv
= get_cur_drv(fdctrl
);
1793 if (fdctrl
->data_dir
== FD_DIR_SCANE
|| fdctrl
->data_dir
== FD_DIR_SCANL
||
1794 fdctrl
->data_dir
== FD_DIR_SCANH
)
1795 status2
= FD_SR2_SNS
;
1796 if (dma_len
> fdctrl
->data_len
)
1797 dma_len
= fdctrl
->data_len
;
1798 if (cur_drv
->blk
== NULL
) {
1799 if (fdctrl
->data_dir
== FD_DIR_WRITE
)
1800 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1802 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1804 goto transfer_error
;
1806 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1807 for (start_pos
= fdctrl
->data_pos
; fdctrl
->data_pos
< dma_len
;) {
1808 len
= dma_len
- fdctrl
->data_pos
;
1809 if (len
+ rel_pos
> FD_SECTOR_LEN
)
1810 len
= FD_SECTOR_LEN
- rel_pos
;
1811 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1812 "(%d-0x%08x 0x%08x)\n", len
, dma_len
, fdctrl
->data_pos
,
1813 fdctrl
->data_len
, GET_CUR_DRV(fdctrl
), cur_drv
->head
,
1814 cur_drv
->track
, cur_drv
->sect
, fd_sector(cur_drv
),
1815 fd_sector(cur_drv
) * FD_SECTOR_LEN
);
1816 if (fdctrl
->data_dir
!= FD_DIR_WRITE
||
1817 len
< FD_SECTOR_LEN
|| rel_pos
!= 0) {
1818 /* READ & SCAN commands and realign to a sector for WRITE */
1819 if (blk_pread(cur_drv
->blk
, fd_offset(cur_drv
),
1820 fdctrl
->fifo
, BDRV_SECTOR_SIZE
) < 0) {
1821 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1822 fd_sector(cur_drv
));
1823 /* Sure, image size is too small... */
1824 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1827 switch (fdctrl
->data_dir
) {
1830 k
->write_memory(fdctrl
->dma
, nchan
, fdctrl
->fifo
+ rel_pos
,
1831 fdctrl
->data_pos
, len
);
1834 /* WRITE commands */
1836 /* Handle readonly medium early, no need to do DMA, touch the
1837 * LED or attempt any writes. A real floppy doesn't attempt
1838 * to write to readonly media either. */
1839 fdctrl_stop_transfer(fdctrl
,
1840 FD_SR0_ABNTERM
| FD_SR0_SEEK
, FD_SR1_NW
,
1842 goto transfer_error
;
1845 k
->read_memory(fdctrl
->dma
, nchan
, fdctrl
->fifo
+ rel_pos
,
1846 fdctrl
->data_pos
, len
);
1847 if (blk_pwrite(cur_drv
->blk
, fd_offset(cur_drv
),
1848 fdctrl
->fifo
, BDRV_SECTOR_SIZE
, 0) < 0) {
1849 FLOPPY_DPRINTF("error writing sector %d\n",
1850 fd_sector(cur_drv
));
1851 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1852 goto transfer_error
;
1856 /* VERIFY commands */
1861 uint8_t tmpbuf
[FD_SECTOR_LEN
];
1863 k
->read_memory(fdctrl
->dma
, nchan
, tmpbuf
, fdctrl
->data_pos
,
1865 ret
= memcmp(tmpbuf
, fdctrl
->fifo
+ rel_pos
, len
);
1867 status2
= FD_SR2_SEH
;
1870 if ((ret
< 0 && fdctrl
->data_dir
== FD_DIR_SCANL
) ||
1871 (ret
> 0 && fdctrl
->data_dir
== FD_DIR_SCANH
)) {
1878 fdctrl
->data_pos
+= len
;
1879 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1881 /* Seek to next sector */
1882 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
))
1887 len
= fdctrl
->data_pos
- start_pos
;
1888 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1889 fdctrl
->data_pos
, len
, fdctrl
->data_len
);
1890 if (fdctrl
->data_dir
== FD_DIR_SCANE
||
1891 fdctrl
->data_dir
== FD_DIR_SCANL
||
1892 fdctrl
->data_dir
== FD_DIR_SCANH
)
1893 status2
= FD_SR2_SEH
;
1894 fdctrl
->data_len
-= len
;
1895 fdctrl_stop_transfer(fdctrl
, status0
, status1
, status2
);
1901 /* Data register : 0x05 */
1902 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
)
1905 uint32_t retval
= 0;
1908 cur_drv
= get_cur_drv(fdctrl
);
1909 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1910 if (!(fdctrl
->msr
& FD_MSR_RQM
) || !(fdctrl
->msr
& FD_MSR_DIO
)) {
1911 FLOPPY_DPRINTF("error: controller not ready for reading\n");
1915 /* If data_len spans multiple sectors, the current position in the FIFO
1916 * wraps around while fdctrl->data_pos is the real position in the whole
1918 pos
= fdctrl
->data_pos
;
1919 pos
%= FD_SECTOR_LEN
;
1921 switch (fdctrl
->phase
) {
1922 case FD_PHASE_EXECUTION
:
1923 assert(fdctrl
->msr
& FD_MSR_NONDMA
);
1925 if (fdctrl
->data_pos
!= 0)
1926 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1927 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1928 fd_sector(cur_drv
));
1931 if (blk_pread(cur_drv
->blk
, fd_offset(cur_drv
), fdctrl
->fifo
,
1934 FLOPPY_DPRINTF("error getting sector %d\n",
1935 fd_sector(cur_drv
));
1936 /* Sure, image size is too small... */
1937 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1941 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1942 fdctrl
->msr
&= ~FD_MSR_RQM
;
1943 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1947 case FD_PHASE_RESULT
:
1948 assert(!(fdctrl
->msr
& FD_MSR_NONDMA
));
1949 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1950 fdctrl
->msr
&= ~FD_MSR_RQM
;
1951 fdctrl_to_command_phase(fdctrl
);
1952 fdctrl_reset_irq(fdctrl
);
1956 case FD_PHASE_COMMAND
:
1961 retval
= fdctrl
->fifo
[pos
];
1962 FLOPPY_DPRINTF("data register: 0x%02x\n", retval
);
1967 static void fdctrl_format_sector(FDCtrl
*fdctrl
)
1972 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1973 cur_drv
= get_cur_drv(fdctrl
);
1974 kt
= fdctrl
->fifo
[6];
1975 kh
= fdctrl
->fifo
[7];
1976 ks
= fdctrl
->fifo
[8];
1977 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1978 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1979 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1980 NUM_SIDES(cur_drv
)));
1981 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1984 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1985 fdctrl
->fifo
[3] = kt
;
1986 fdctrl
->fifo
[4] = kh
;
1987 fdctrl
->fifo
[5] = ks
;
1991 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1992 fdctrl
->fifo
[3] = kt
;
1993 fdctrl
->fifo
[4] = kh
;
1994 fdctrl
->fifo
[5] = ks
;
1997 /* No seek enabled */
1998 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1999 fdctrl
->fifo
[3] = kt
;
2000 fdctrl
->fifo
[4] = kh
;
2001 fdctrl
->fifo
[5] = ks
;
2004 fdctrl
->status0
|= FD_SR0_SEEK
;
2009 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
2010 if (cur_drv
->blk
== NULL
||
2011 blk_pwrite(cur_drv
->blk
, fd_offset(cur_drv
), fdctrl
->fifo
,
2012 BDRV_SECTOR_SIZE
, 0) < 0) {
2013 FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv
));
2014 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
2016 if (cur_drv
->sect
== cur_drv
->last_sect
) {
2017 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
2018 /* Last sector done */
2019 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2022 fdctrl
->data_pos
= 0;
2023 fdctrl
->data_len
= 4;
2028 static void fdctrl_handle_lock(FDCtrl
*fdctrl
, int direction
)
2030 fdctrl
->lock
= (fdctrl
->fifo
[0] & 0x80) ? 1 : 0;
2031 fdctrl
->fifo
[0] = fdctrl
->lock
<< 4;
2032 fdctrl_to_result_phase(fdctrl
, 1);
2035 static void fdctrl_handle_dumpreg(FDCtrl
*fdctrl
, int direction
)
2037 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2039 /* Drives position */
2040 fdctrl
->fifo
[0] = drv0(fdctrl
)->track
;
2041 fdctrl
->fifo
[1] = drv1(fdctrl
)->track
;
2043 fdctrl
->fifo
[2] = drv2(fdctrl
)->track
;
2044 fdctrl
->fifo
[3] = drv3(fdctrl
)->track
;
2046 fdctrl
->fifo
[2] = 0;
2047 fdctrl
->fifo
[3] = 0;
2050 fdctrl
->fifo
[4] = fdctrl
->timer0
;
2051 fdctrl
->fifo
[5] = (fdctrl
->timer1
<< 1) | (fdctrl
->dor
& FD_DOR_DMAEN
? 1 : 0);
2052 fdctrl
->fifo
[6] = cur_drv
->last_sect
;
2053 fdctrl
->fifo
[7] = (fdctrl
->lock
<< 7) |
2054 (cur_drv
->perpendicular
<< 2);
2055 fdctrl
->fifo
[8] = fdctrl
->config
;
2056 fdctrl
->fifo
[9] = fdctrl
->precomp_trk
;
2057 fdctrl_to_result_phase(fdctrl
, 10);
2060 static void fdctrl_handle_version(FDCtrl
*fdctrl
, int direction
)
2062 /* Controller's version */
2063 fdctrl
->fifo
[0] = fdctrl
->version
;
2064 fdctrl_to_result_phase(fdctrl
, 1);
2067 static void fdctrl_handle_partid(FDCtrl
*fdctrl
, int direction
)
2069 fdctrl
->fifo
[0] = 0x41; /* Stepping 1 */
2070 fdctrl_to_result_phase(fdctrl
, 1);
2073 static void fdctrl_handle_restore(FDCtrl
*fdctrl
, int direction
)
2075 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2077 /* Drives position */
2078 drv0(fdctrl
)->track
= fdctrl
->fifo
[3];
2079 drv1(fdctrl
)->track
= fdctrl
->fifo
[4];
2081 drv2(fdctrl
)->track
= fdctrl
->fifo
[5];
2082 drv3(fdctrl
)->track
= fdctrl
->fifo
[6];
2085 fdctrl
->timer0
= fdctrl
->fifo
[7];
2086 fdctrl
->timer1
= fdctrl
->fifo
[8];
2087 cur_drv
->last_sect
= fdctrl
->fifo
[9];
2088 fdctrl
->lock
= fdctrl
->fifo
[10] >> 7;
2089 cur_drv
->perpendicular
= (fdctrl
->fifo
[10] >> 2) & 0xF;
2090 fdctrl
->config
= fdctrl
->fifo
[11];
2091 fdctrl
->precomp_trk
= fdctrl
->fifo
[12];
2092 fdctrl
->pwrd
= fdctrl
->fifo
[13];
2093 fdctrl_to_command_phase(fdctrl
);
2096 static void fdctrl_handle_save(FDCtrl
*fdctrl
, int direction
)
2098 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2100 fdctrl
->fifo
[0] = 0;
2101 fdctrl
->fifo
[1] = 0;
2102 /* Drives position */
2103 fdctrl
->fifo
[2] = drv0(fdctrl
)->track
;
2104 fdctrl
->fifo
[3] = drv1(fdctrl
)->track
;
2106 fdctrl
->fifo
[4] = drv2(fdctrl
)->track
;
2107 fdctrl
->fifo
[5] = drv3(fdctrl
)->track
;
2109 fdctrl
->fifo
[4] = 0;
2110 fdctrl
->fifo
[5] = 0;
2113 fdctrl
->fifo
[6] = fdctrl
->timer0
;
2114 fdctrl
->fifo
[7] = fdctrl
->timer1
;
2115 fdctrl
->fifo
[8] = cur_drv
->last_sect
;
2116 fdctrl
->fifo
[9] = (fdctrl
->lock
<< 7) |
2117 (cur_drv
->perpendicular
<< 2);
2118 fdctrl
->fifo
[10] = fdctrl
->config
;
2119 fdctrl
->fifo
[11] = fdctrl
->precomp_trk
;
2120 fdctrl
->fifo
[12] = fdctrl
->pwrd
;
2121 fdctrl
->fifo
[13] = 0;
2122 fdctrl
->fifo
[14] = 0;
2123 fdctrl_to_result_phase(fdctrl
, 15);
2126 static void fdctrl_handle_readid(FDCtrl
*fdctrl
, int direction
)
2128 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2130 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
2131 timer_mod(fdctrl
->result_timer
, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) +
2132 (NANOSECONDS_PER_SECOND
/ 50));
2135 static void fdctrl_handle_format_track(FDCtrl
*fdctrl
, int direction
)
2139 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2140 cur_drv
= get_cur_drv(fdctrl
);
2141 fdctrl
->data_state
|= FD_STATE_FORMAT
;
2142 if (fdctrl
->fifo
[0] & 0x80)
2143 fdctrl
->data_state
|= FD_STATE_MULTI
;
2145 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
2147 fdctrl
->fifo
[2] > 7 ? 16384 : 128 << fdctrl
->fifo
[2];
2149 cur_drv
->last_sect
=
2150 cur_drv
->flags
& FDISK_DBL_SIDES
? fdctrl
->fifo
[3] :
2151 fdctrl
->fifo
[3] / 2;
2153 cur_drv
->last_sect
= fdctrl
->fifo
[3];
2155 /* TODO: implement format using DMA expected by the Bochs BIOS
2156 * and Linux fdformat (read 3 bytes per sector via DMA and fill
2157 * the sector with the specified fill byte
2159 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
2160 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2163 static void fdctrl_handle_specify(FDCtrl
*fdctrl
, int direction
)
2165 fdctrl
->timer0
= (fdctrl
->fifo
[1] >> 4) & 0xF;
2166 fdctrl
->timer1
= fdctrl
->fifo
[2] >> 1;
2167 if (fdctrl
->fifo
[2] & 1)
2168 fdctrl
->dor
&= ~FD_DOR_DMAEN
;
2170 fdctrl
->dor
|= FD_DOR_DMAEN
;
2171 /* No result back */
2172 fdctrl_to_command_phase(fdctrl
);
2175 static void fdctrl_handle_sense_drive_status(FDCtrl
*fdctrl
, int direction
)
2179 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2180 cur_drv
= get_cur_drv(fdctrl
);
2181 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
2182 /* 1 Byte status back */
2183 fdctrl
->fifo
[0] = (cur_drv
->ro
<< 6) |
2184 (cur_drv
->track
== 0 ? 0x10 : 0x00) |
2185 (cur_drv
->head
<< 2) |
2186 GET_CUR_DRV(fdctrl
) |
2188 fdctrl_to_result_phase(fdctrl
, 1);
2191 static void fdctrl_handle_recalibrate(FDCtrl
*fdctrl
, int direction
)
2195 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2196 cur_drv
= get_cur_drv(fdctrl
);
2197 fd_recalibrate(cur_drv
);
2198 fdctrl_to_command_phase(fdctrl
);
2199 /* Raise Interrupt */
2200 fdctrl
->status0
|= FD_SR0_SEEK
;
2201 fdctrl_raise_irq(fdctrl
);
2204 static void fdctrl_handle_sense_interrupt_status(FDCtrl
*fdctrl
, int direction
)
2206 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2208 if (fdctrl
->reset_sensei
> 0) {
2210 FD_SR0_RDYCHG
+ FD_RESET_SENSEI_COUNT
- fdctrl
->reset_sensei
;
2211 fdctrl
->reset_sensei
--;
2212 } else if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
2213 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
2214 fdctrl_to_result_phase(fdctrl
, 1);
2218 (fdctrl
->status0
& ~(FD_SR0_HEAD
| FD_SR0_DS1
| FD_SR0_DS0
))
2219 | GET_CUR_DRV(fdctrl
);
2222 fdctrl
->fifo
[1] = cur_drv
->track
;
2223 fdctrl_to_result_phase(fdctrl
, 2);
2224 fdctrl_reset_irq(fdctrl
);
2225 fdctrl
->status0
= FD_SR0_RDYCHG
;
2228 static void fdctrl_handle_seek(FDCtrl
*fdctrl
, int direction
)
2232 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2233 cur_drv
= get_cur_drv(fdctrl
);
2234 fdctrl_to_command_phase(fdctrl
);
2235 /* The seek command just sends step pulses to the drive and doesn't care if
2236 * there is a medium inserted of if it's banging the head against the drive.
2238 fd_seek(cur_drv
, cur_drv
->head
, fdctrl
->fifo
[2], cur_drv
->sect
, 1);
2239 /* Raise Interrupt */
2240 fdctrl
->status0
|= FD_SR0_SEEK
;
2241 fdctrl_raise_irq(fdctrl
);
2244 static void fdctrl_handle_perpendicular_mode(FDCtrl
*fdctrl
, int direction
)
2246 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2248 if (fdctrl
->fifo
[1] & 0x80)
2249 cur_drv
->perpendicular
= fdctrl
->fifo
[1] & 0x7;
2250 /* No result back */
2251 fdctrl_to_command_phase(fdctrl
);
2254 static void fdctrl_handle_configure(FDCtrl
*fdctrl
, int direction
)
2256 fdctrl
->config
= fdctrl
->fifo
[2];
2257 fdctrl
->precomp_trk
= fdctrl
->fifo
[3];
2258 /* No result back */
2259 fdctrl_to_command_phase(fdctrl
);
2262 static void fdctrl_handle_powerdown_mode(FDCtrl
*fdctrl
, int direction
)
2264 fdctrl
->pwrd
= fdctrl
->fifo
[1];
2265 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
2266 fdctrl_to_result_phase(fdctrl
, 1);
2269 static void fdctrl_handle_option(FDCtrl
*fdctrl
, int direction
)
2271 /* No result back */
2272 fdctrl_to_command_phase(fdctrl
);
2275 static void fdctrl_handle_drive_specification_command(FDCtrl
*fdctrl
, int direction
)
2277 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2280 pos
= fdctrl
->data_pos
- 1;
2281 pos
%= FD_SECTOR_LEN
;
2282 if (fdctrl
->fifo
[pos
] & 0x80) {
2283 /* Command parameters done */
2284 if (fdctrl
->fifo
[pos
] & 0x40) {
2285 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
2286 fdctrl
->fifo
[2] = 0;
2287 fdctrl
->fifo
[3] = 0;
2288 fdctrl_to_result_phase(fdctrl
, 4);
2290 fdctrl_to_command_phase(fdctrl
);
2292 } else if (fdctrl
->data_len
> 7) {
2294 fdctrl
->fifo
[0] = 0x80 |
2295 (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
2296 fdctrl_to_result_phase(fdctrl
, 1);
2300 static void fdctrl_handle_relative_seek_in(FDCtrl
*fdctrl
, int direction
)
2304 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2305 cur_drv
= get_cur_drv(fdctrl
);
2306 if (fdctrl
->fifo
[2] + cur_drv
->track
>= cur_drv
->max_track
) {
2307 fd_seek(cur_drv
, cur_drv
->head
, cur_drv
->max_track
- 1,
2310 fd_seek(cur_drv
, cur_drv
->head
,
2311 cur_drv
->track
+ fdctrl
->fifo
[2], cur_drv
->sect
, 1);
2313 fdctrl_to_command_phase(fdctrl
);
2314 /* Raise Interrupt */
2315 fdctrl
->status0
|= FD_SR0_SEEK
;
2316 fdctrl_raise_irq(fdctrl
);
2319 static void fdctrl_handle_relative_seek_out(FDCtrl
*fdctrl
, int direction
)
2323 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2324 cur_drv
= get_cur_drv(fdctrl
);
2325 if (fdctrl
->fifo
[2] > cur_drv
->track
) {
2326 fd_seek(cur_drv
, cur_drv
->head
, 0, cur_drv
->sect
, 1);
2328 fd_seek(cur_drv
, cur_drv
->head
,
2329 cur_drv
->track
- fdctrl
->fifo
[2], cur_drv
->sect
, 1);
2331 fdctrl_to_command_phase(fdctrl
);
2332 /* Raise Interrupt */
2333 fdctrl
->status0
|= FD_SR0_SEEK
;
2334 fdctrl_raise_irq(fdctrl
);
2338 * Handlers for the execution phase of each command
2340 typedef struct FDCtrlCommand
{
2345 void (*handler
)(FDCtrl
*fdctrl
, int direction
);
2349 static const FDCtrlCommand handlers
[] = {
2350 { FD_CMD_READ
, 0x1f, "READ", 8, fdctrl_start_transfer
, FD_DIR_READ
},
2351 { FD_CMD_WRITE
, 0x3f, "WRITE", 8, fdctrl_start_transfer
, FD_DIR_WRITE
},
2352 { FD_CMD_SEEK
, 0xff, "SEEK", 2, fdctrl_handle_seek
},
2353 { FD_CMD_SENSE_INTERRUPT_STATUS
, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status
},
2354 { FD_CMD_RECALIBRATE
, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate
},
2355 { FD_CMD_FORMAT_TRACK
, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track
},
2356 { FD_CMD_READ_TRACK
, 0xbf, "READ TRACK", 8, fdctrl_start_transfer
, FD_DIR_READ
},
2357 { FD_CMD_RESTORE
, 0xff, "RESTORE", 17, fdctrl_handle_restore
}, /* part of READ DELETED DATA */
2358 { FD_CMD_SAVE
, 0xff, "SAVE", 0, fdctrl_handle_save
}, /* part of READ DELETED DATA */
2359 { FD_CMD_READ_DELETED
, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_READ
},
2360 { FD_CMD_SCAN_EQUAL
, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANE
},
2361 { FD_CMD_VERIFY
, 0x1f, "VERIFY", 8, fdctrl_start_transfer
, FD_DIR_VERIFY
},
2362 { FD_CMD_SCAN_LOW_OR_EQUAL
, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANL
},
2363 { FD_CMD_SCAN_HIGH_OR_EQUAL
, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANH
},
2364 { FD_CMD_WRITE_DELETED
, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_WRITE
},
2365 { FD_CMD_READ_ID
, 0xbf, "READ ID", 1, fdctrl_handle_readid
},
2366 { FD_CMD_SPECIFY
, 0xff, "SPECIFY", 2, fdctrl_handle_specify
},
2367 { FD_CMD_SENSE_DRIVE_STATUS
, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status
},
2368 { FD_CMD_PERPENDICULAR_MODE
, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode
},
2369 { FD_CMD_CONFIGURE
, 0xff, "CONFIGURE", 3, fdctrl_handle_configure
},
2370 { FD_CMD_POWERDOWN_MODE
, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode
},
2371 { FD_CMD_OPTION
, 0xff, "OPTION", 1, fdctrl_handle_option
},
2372 { FD_CMD_DRIVE_SPECIFICATION_COMMAND
, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command
},
2373 { FD_CMD_RELATIVE_SEEK_OUT
, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out
},
2374 { FD_CMD_FORMAT_AND_WRITE
, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented
},
2375 { FD_CMD_RELATIVE_SEEK_IN
, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in
},
2376 { FD_CMD_LOCK
, 0x7f, "LOCK", 0, fdctrl_handle_lock
},
2377 { FD_CMD_DUMPREG
, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg
},
2378 { FD_CMD_VERSION
, 0xff, "VERSION", 0, fdctrl_handle_version
},
2379 { FD_CMD_PART_ID
, 0xff, "PART ID", 0, fdctrl_handle_partid
},
2380 { FD_CMD_WRITE
, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer
, FD_DIR_WRITE
}, /* not in specification ; BeOS 4.5 bug */
2381 { 0, 0, "unknown", 0, fdctrl_unimplemented
}, /* default handler */
2383 /* Associate command to an index in the 'handlers' array */
2384 static uint8_t command_to_handler
[256];
2386 static const FDCtrlCommand
*get_command(uint8_t cmd
)
2390 idx
= command_to_handler
[cmd
];
2391 FLOPPY_DPRINTF("%s command\n", handlers
[idx
].name
);
2392 return &handlers
[idx
];
2395 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
)
2398 const FDCtrlCommand
*cmd
;
2402 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
2403 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
2406 if (!(fdctrl
->msr
& FD_MSR_RQM
) || (fdctrl
->msr
& FD_MSR_DIO
)) {
2407 FLOPPY_DPRINTF("error: controller not ready for writing\n");
2410 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
2412 FLOPPY_DPRINTF("%s: %02x\n", __func__
, value
);
2414 /* If data_len spans multiple sectors, the current position in the FIFO
2415 * wraps around while fdctrl->data_pos is the real position in the whole
2417 pos
= fdctrl
->data_pos
++;
2418 pos
%= FD_SECTOR_LEN
;
2419 fdctrl
->fifo
[pos
] = value
;
2421 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
2422 fdctrl
->msr
&= ~FD_MSR_RQM
;
2425 switch (fdctrl
->phase
) {
2426 case FD_PHASE_EXECUTION
:
2427 /* For DMA requests, RQM should be cleared during execution phase, so
2428 * we would have errored out above. */
2429 assert(fdctrl
->msr
& FD_MSR_NONDMA
);
2431 /* FIFO data write */
2432 if (pos
== FD_SECTOR_LEN
- 1 ||
2433 fdctrl
->data_pos
== fdctrl
->data_len
) {
2434 cur_drv
= get_cur_drv(fdctrl
);
2435 if (blk_pwrite(cur_drv
->blk
, fd_offset(cur_drv
), fdctrl
->fifo
,
2436 BDRV_SECTOR_SIZE
, 0) < 0) {
2437 FLOPPY_DPRINTF("error writing sector %d\n",
2438 fd_sector(cur_drv
));
2441 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
2442 FLOPPY_DPRINTF("error seeking to next sector %d\n",
2443 fd_sector(cur_drv
));
2448 /* Switch to result phase when done with the transfer */
2449 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
2450 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2454 case FD_PHASE_COMMAND
:
2455 assert(!(fdctrl
->msr
& FD_MSR_NONDMA
));
2456 assert(fdctrl
->data_pos
< FD_SECTOR_LEN
);
2459 /* The first byte specifies the command. Now we start reading
2460 * as many parameters as this command requires. */
2461 cmd
= get_command(value
);
2462 fdctrl
->data_len
= cmd
->parameters
+ 1;
2463 if (cmd
->parameters
) {
2464 fdctrl
->msr
|= FD_MSR_RQM
;
2466 fdctrl
->msr
|= FD_MSR_CMDBUSY
;
2469 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
2470 /* We have all parameters now, execute the command */
2471 fdctrl
->phase
= FD_PHASE_EXECUTION
;
2473 if (fdctrl
->data_state
& FD_STATE_FORMAT
) {
2474 fdctrl_format_sector(fdctrl
);
2478 cmd
= get_command(fdctrl
->fifo
[0]);
2479 FLOPPY_DPRINTF("Calling handler for '%s'\n", cmd
->name
);
2480 cmd
->handler(fdctrl
, cmd
->direction
);
2484 case FD_PHASE_RESULT
:
2490 static void fdctrl_result_timer(void *opaque
)
2492 FDCtrl
*fdctrl
= opaque
;
2493 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2495 /* Pretend we are spinning.
2496 * This is needed for Coherent, which uses READ ID to check for
2497 * sector interleaving.
2499 if (cur_drv
->last_sect
!= 0) {
2500 cur_drv
->sect
= (cur_drv
->sect
% cur_drv
->last_sect
) + 1;
2502 /* READ_ID can't automatically succeed! */
2503 if (fdctrl
->check_media_rate
&&
2504 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
2505 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
2506 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
2507 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
2509 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2513 /* Init functions */
2514 static void fdctrl_connect_drives(FDCtrl
*fdctrl
, DeviceState
*fdc_dev
,
2521 Error
*local_err
= NULL
;
2523 for (i
= 0; i
< MAX_FD
; i
++) {
2524 drive
= &fdctrl
->drives
[i
];
2525 drive
->fdctrl
= fdctrl
;
2527 /* If the drive is not present, we skip creating the qdev device, but
2528 * still have to initialise the controller. */
2529 blk
= fdctrl
->qdev_for_drives
[i
].blk
;
2532 fd_revalidate(drive
);
2536 dev
= qdev_create(&fdctrl
->bus
.bus
, "floppy");
2537 qdev_prop_set_uint32(dev
, "unit", i
);
2538 qdev_prop_set_enum(dev
, "drive-type", fdctrl
->qdev_for_drives
[i
].type
);
2541 blk_detach_dev(blk
, fdc_dev
);
2542 fdctrl
->qdev_for_drives
[i
].blk
= NULL
;
2543 qdev_prop_set_drive(dev
, "drive", blk
, &local_err
);
2547 error_propagate(errp
, local_err
);
2551 object_property_set_bool(OBJECT(dev
), true, "realized", &local_err
);
2553 error_propagate(errp
, local_err
);
2559 ISADevice
*fdctrl_init_isa(ISABus
*bus
, DriveInfo
**fds
)
2564 isadev
= isa_try_create(bus
, TYPE_ISA_FDC
);
2568 dev
= DEVICE(isadev
);
2571 qdev_prop_set_drive(dev
, "driveA", blk_by_legacy_dinfo(fds
[0]),
2575 qdev_prop_set_drive(dev
, "driveB", blk_by_legacy_dinfo(fds
[1]),
2578 qdev_init_nofail(dev
);
2583 void fdctrl_init_sysbus(qemu_irq irq
, int dma_chann
,
2584 hwaddr mmio_base
, DriveInfo
**fds
)
2591 dev
= qdev_create(NULL
, "sysbus-fdc");
2592 sys
= SYSBUS_FDC(dev
);
2593 fdctrl
= &sys
->state
;
2594 fdctrl
->dma_chann
= dma_chann
; /* FIXME */
2596 qdev_prop_set_drive(dev
, "driveA", blk_by_legacy_dinfo(fds
[0]),
2600 qdev_prop_set_drive(dev
, "driveB", blk_by_legacy_dinfo(fds
[1]),
2603 qdev_init_nofail(dev
);
2604 sbd
= SYS_BUS_DEVICE(dev
);
2605 sysbus_connect_irq(sbd
, 0, irq
);
2606 sysbus_mmio_map(sbd
, 0, mmio_base
);
2609 void sun4m_fdctrl_init(qemu_irq irq
, hwaddr io_base
,
2610 DriveInfo
**fds
, qemu_irq
*fdc_tc
)
2615 dev
= qdev_create(NULL
, "SUNW,fdtwo");
2617 qdev_prop_set_drive(dev
, "drive", blk_by_legacy_dinfo(fds
[0]),
2620 qdev_init_nofail(dev
);
2621 sys
= SYSBUS_FDC(dev
);
2622 sysbus_connect_irq(SYS_BUS_DEVICE(sys
), 0, irq
);
2623 sysbus_mmio_map(SYS_BUS_DEVICE(sys
), 0, io_base
);
2624 *fdc_tc
= qdev_get_gpio_in(dev
, 0);
2627 static void fdctrl_realize_common(DeviceState
*dev
, FDCtrl
*fdctrl
,
2631 static int command_tables_inited
= 0;
2633 if (fdctrl
->fallback
== FLOPPY_DRIVE_TYPE_AUTO
) {
2634 error_setg(errp
, "Cannot choose a fallback FDrive type of 'auto'");
2637 /* Fill 'command_to_handler' lookup table */
2638 if (!command_tables_inited
) {
2639 command_tables_inited
= 1;
2640 for (i
= ARRAY_SIZE(handlers
) - 1; i
>= 0; i
--) {
2641 for (j
= 0; j
< sizeof(command_to_handler
); j
++) {
2642 if ((j
& handlers
[i
].mask
) == handlers
[i
].value
) {
2643 command_to_handler
[j
] = i
;
2649 FLOPPY_DPRINTF("init controller\n");
2650 fdctrl
->fifo
= qemu_memalign(512, FD_SECTOR_LEN
);
2651 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
2652 fdctrl
->fifo_size
= 512;
2653 fdctrl
->result_timer
= timer_new_ns(QEMU_CLOCK_VIRTUAL
,
2654 fdctrl_result_timer
, fdctrl
);
2656 fdctrl
->version
= 0x90; /* Intel 82078 controller */
2657 fdctrl
->config
= FD_CONFIG_EIS
| FD_CONFIG_EFIFO
; /* Implicit seek, polling & FIFO enabled */
2658 fdctrl
->num_floppies
= MAX_FD
;
2660 if (fdctrl
->dma_chann
!= -1) {
2662 assert(fdctrl
->dma
);
2663 k
= ISADMA_GET_CLASS(fdctrl
->dma
);
2664 k
->register_channel(fdctrl
->dma
, fdctrl
->dma_chann
,
2665 &fdctrl_transfer_handler
, fdctrl
);
2668 floppy_bus_create(fdctrl
, &fdctrl
->bus
, dev
);
2669 fdctrl_connect_drives(fdctrl
, dev
, errp
);
2672 static const MemoryRegionPortio fdc_portio_list
[] = {
2673 { 1, 5, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
2674 { 7, 1, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
2675 PORTIO_END_OF_LIST(),
2678 static void isabus_fdc_realize(DeviceState
*dev
, Error
**errp
)
2680 ISADevice
*isadev
= ISA_DEVICE(dev
);
2681 FDCtrlISABus
*isa
= ISA_FDC(dev
);
2682 FDCtrl
*fdctrl
= &isa
->state
;
2685 isa_register_portio_list(isadev
, &fdctrl
->portio_list
,
2686 isa
->iobase
, fdc_portio_list
, fdctrl
,
2689 isa_init_irq(isadev
, &fdctrl
->irq
, isa
->irq
);
2690 fdctrl
->dma_chann
= isa
->dma
;
2691 if (fdctrl
->dma_chann
!= -1) {
2692 fdctrl
->dma
= isa_get_dma(isa_bus_from_device(isadev
), isa
->dma
);
2694 error_setg(errp
, "ISA controller does not support DMA");
2699 qdev_set_legacy_instance_id(dev
, isa
->iobase
, 2);
2700 fdctrl_realize_common(dev
, fdctrl
, &err
);
2702 error_propagate(errp
, err
);
2707 static void sysbus_fdc_initfn(Object
*obj
)
2709 SysBusDevice
*sbd
= SYS_BUS_DEVICE(obj
);
2710 FDCtrlSysBus
*sys
= SYSBUS_FDC(obj
);
2711 FDCtrl
*fdctrl
= &sys
->state
;
2713 fdctrl
->dma_chann
= -1;
2715 memory_region_init_io(&fdctrl
->iomem
, obj
, &fdctrl_mem_ops
, fdctrl
,
2717 sysbus_init_mmio(sbd
, &fdctrl
->iomem
);
2720 static void sun4m_fdc_initfn(Object
*obj
)
2722 SysBusDevice
*sbd
= SYS_BUS_DEVICE(obj
);
2723 FDCtrlSysBus
*sys
= SYSBUS_FDC(obj
);
2724 FDCtrl
*fdctrl
= &sys
->state
;
2726 fdctrl
->dma_chann
= -1;
2728 memory_region_init_io(&fdctrl
->iomem
, obj
, &fdctrl_mem_strict_ops
,
2729 fdctrl
, "fdctrl", 0x08);
2730 sysbus_init_mmio(sbd
, &fdctrl
->iomem
);
2733 static void sysbus_fdc_common_initfn(Object
*obj
)
2735 DeviceState
*dev
= DEVICE(obj
);
2736 SysBusDevice
*sbd
= SYS_BUS_DEVICE(dev
);
2737 FDCtrlSysBus
*sys
= SYSBUS_FDC(obj
);
2738 FDCtrl
*fdctrl
= &sys
->state
;
2740 qdev_set_legacy_instance_id(dev
, 0 /* io */, 2); /* FIXME */
2742 sysbus_init_irq(sbd
, &fdctrl
->irq
);
2743 qdev_init_gpio_in(dev
, fdctrl_handle_tc
, 1);
2746 static void sysbus_fdc_common_realize(DeviceState
*dev
, Error
**errp
)
2748 FDCtrlSysBus
*sys
= SYSBUS_FDC(dev
);
2749 FDCtrl
*fdctrl
= &sys
->state
;
2751 fdctrl_realize_common(dev
, fdctrl
, errp
);
2754 FloppyDriveType
isa_fdc_get_drive_type(ISADevice
*fdc
, int i
)
2756 FDCtrlISABus
*isa
= ISA_FDC(fdc
);
2758 return isa
->state
.drives
[i
].drive
;
2761 void isa_fdc_get_drive_max_chs(FloppyDriveType type
,
2762 uint8_t *maxc
, uint8_t *maxh
, uint8_t *maxs
)
2764 const FDFormat
*fdf
;
2766 *maxc
= *maxh
= *maxs
= 0;
2767 for (fdf
= fd_formats
; fdf
->drive
!= FLOPPY_DRIVE_TYPE_NONE
; fdf
++) {
2768 if (fdf
->drive
!= type
) {
2771 if (*maxc
< fdf
->max_track
) {
2772 *maxc
= fdf
->max_track
;
2774 if (*maxh
< fdf
->max_head
) {
2775 *maxh
= fdf
->max_head
;
2777 if (*maxs
< fdf
->last_sect
) {
2778 *maxs
= fdf
->last_sect
;
2784 static const VMStateDescription vmstate_isa_fdc
={
2787 .minimum_version_id
= 2,
2788 .fields
= (VMStateField
[]) {
2789 VMSTATE_STRUCT(state
, FDCtrlISABus
, 0, vmstate_fdc
, FDCtrl
),
2790 VMSTATE_END_OF_LIST()
2794 static Property isa_fdc_properties
[] = {
2795 DEFINE_PROP_UINT32("iobase", FDCtrlISABus
, iobase
, 0x3f0),
2796 DEFINE_PROP_UINT32("irq", FDCtrlISABus
, irq
, 6),
2797 DEFINE_PROP_UINT32("dma", FDCtrlISABus
, dma
, 2),
2798 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus
, state
.qdev_for_drives
[0].blk
),
2799 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus
, state
.qdev_for_drives
[1].blk
),
2800 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus
, state
.check_media_rate
,
2802 DEFINE_PROP_SIGNED("fdtypeA", FDCtrlISABus
, state
.qdev_for_drives
[0].type
,
2803 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2805 DEFINE_PROP_SIGNED("fdtypeB", FDCtrlISABus
, state
.qdev_for_drives
[1].type
,
2806 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2808 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus
, state
.fallback
,
2809 FLOPPY_DRIVE_TYPE_288
, qdev_prop_fdc_drive_type
,
2811 DEFINE_PROP_END_OF_LIST(),
2814 static void isabus_fdc_class_init(ObjectClass
*klass
, void *data
)
2816 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2818 dc
->realize
= isabus_fdc_realize
;
2819 dc
->fw_name
= "fdc";
2820 dc
->reset
= fdctrl_external_reset_isa
;
2821 dc
->vmsd
= &vmstate_isa_fdc
;
2822 dc
->props
= isa_fdc_properties
;
2823 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
2826 static void isabus_fdc_instance_init(Object
*obj
)
2828 FDCtrlISABus
*isa
= ISA_FDC(obj
);
2830 device_add_bootindex_property(obj
, &isa
->bootindexA
,
2831 "bootindexA", "/floppy@0",
2833 device_add_bootindex_property(obj
, &isa
->bootindexB
,
2834 "bootindexB", "/floppy@1",
2838 static const TypeInfo isa_fdc_info
= {
2839 .name
= TYPE_ISA_FDC
,
2840 .parent
= TYPE_ISA_DEVICE
,
2841 .instance_size
= sizeof(FDCtrlISABus
),
2842 .class_init
= isabus_fdc_class_init
,
2843 .instance_init
= isabus_fdc_instance_init
,
2846 static const VMStateDescription vmstate_sysbus_fdc
={
2849 .minimum_version_id
= 2,
2850 .fields
= (VMStateField
[]) {
2851 VMSTATE_STRUCT(state
, FDCtrlSysBus
, 0, vmstate_fdc
, FDCtrl
),
2852 VMSTATE_END_OF_LIST()
2856 static Property sysbus_fdc_properties
[] = {
2857 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus
, state
.qdev_for_drives
[0].blk
),
2858 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus
, state
.qdev_for_drives
[1].blk
),
2859 DEFINE_PROP_SIGNED("fdtypeA", FDCtrlSysBus
, state
.qdev_for_drives
[0].type
,
2860 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2862 DEFINE_PROP_SIGNED("fdtypeB", FDCtrlSysBus
, state
.qdev_for_drives
[1].type
,
2863 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2865 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus
, state
.fallback
,
2866 FLOPPY_DRIVE_TYPE_144
, qdev_prop_fdc_drive_type
,
2868 DEFINE_PROP_END_OF_LIST(),
2871 static void sysbus_fdc_class_init(ObjectClass
*klass
, void *data
)
2873 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2875 dc
->props
= sysbus_fdc_properties
;
2876 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
2879 static const TypeInfo sysbus_fdc_info
= {
2880 .name
= "sysbus-fdc",
2881 .parent
= TYPE_SYSBUS_FDC
,
2882 .instance_init
= sysbus_fdc_initfn
,
2883 .class_init
= sysbus_fdc_class_init
,
2886 static Property sun4m_fdc_properties
[] = {
2887 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus
, state
.qdev_for_drives
[0].blk
),
2888 DEFINE_PROP_SIGNED("fdtype", FDCtrlSysBus
, state
.qdev_for_drives
[0].type
,
2889 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2891 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus
, state
.fallback
,
2892 FLOPPY_DRIVE_TYPE_144
, qdev_prop_fdc_drive_type
,
2894 DEFINE_PROP_END_OF_LIST(),
2897 static void sun4m_fdc_class_init(ObjectClass
*klass
, void *data
)
2899 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2901 dc
->props
= sun4m_fdc_properties
;
2902 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
2905 static const TypeInfo sun4m_fdc_info
= {
2906 .name
= "SUNW,fdtwo",
2907 .parent
= TYPE_SYSBUS_FDC
,
2908 .instance_init
= sun4m_fdc_initfn
,
2909 .class_init
= sun4m_fdc_class_init
,
2912 static void sysbus_fdc_common_class_init(ObjectClass
*klass
, void *data
)
2914 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2916 dc
->realize
= sysbus_fdc_common_realize
;
2917 dc
->reset
= fdctrl_external_reset_sysbus
;
2918 dc
->vmsd
= &vmstate_sysbus_fdc
;
2921 static const TypeInfo sysbus_fdc_type_info
= {
2922 .name
= TYPE_SYSBUS_FDC
,
2923 .parent
= TYPE_SYS_BUS_DEVICE
,
2924 .instance_size
= sizeof(FDCtrlSysBus
),
2925 .instance_init
= sysbus_fdc_common_initfn
,
2927 .class_init
= sysbus_fdc_common_class_init
,
2930 static void fdc_register_types(void)
2932 type_register_static(&isa_fdc_info
);
2933 type_register_static(&sysbus_fdc_type_info
);
2934 type_register_static(&sysbus_fdc_info
);
2935 type_register_static(&sun4m_fdc_info
);
2936 type_register_static(&floppy_bus_info
);
2937 type_register_static(&floppy_drive_info
);
2940 type_init(fdc_register_types
)