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"
31 #include "hw/block/fdc.h"
32 #include "qapi/error.h"
33 #include "qemu/error-report.h"
34 #include "qemu/timer.h"
35 #include "hw/acpi/aml-build.h"
37 #include "hw/isa/isa.h"
38 #include "hw/qdev-properties.h"
39 #include "hw/sysbus.h"
40 #include "migration/vmstate.h"
41 #include "hw/block/block.h"
42 #include "sysemu/block-backend.h"
43 #include "sysemu/blockdev.h"
44 #include "sysemu/sysemu.h"
46 #include "qemu/main-loop.h"
47 #include "qemu/module.h"
49 #include "qom/object.h"
51 /********************************************************/
52 /* debug Floppy devices */
54 #define DEBUG_FLOPPY 0
56 #define FLOPPY_DPRINTF(fmt, ...) \
59 fprintf(stderr, "FLOPPY: " fmt , ## __VA_ARGS__); \
64 /********************************************************/
67 #define TYPE_FLOPPY_BUS "floppy-bus"
68 typedef struct FloppyBus FloppyBus
;
69 DECLARE_INSTANCE_CHECKER(FloppyBus
, FLOPPY_BUS
,
72 typedef struct FDCtrl FDCtrl
;
73 typedef struct FDrive FDrive
;
74 static FDrive
*get_drv(FDCtrl
*fdctrl
, int unit
);
81 static const TypeInfo floppy_bus_info
= {
82 .name
= TYPE_FLOPPY_BUS
,
84 .instance_size
= sizeof(FloppyBus
),
87 static void floppy_bus_create(FDCtrl
*fdc
, FloppyBus
*bus
, DeviceState
*dev
)
89 qbus_create_inplace(bus
, sizeof(FloppyBus
), TYPE_FLOPPY_BUS
, dev
, NULL
);
94 /********************************************************/
95 /* Floppy drive emulation */
97 typedef enum FDriveRate
{
98 FDRIVE_RATE_500K
= 0x00, /* 500 Kbps */
99 FDRIVE_RATE_300K
= 0x01, /* 300 Kbps */
100 FDRIVE_RATE_250K
= 0x02, /* 250 Kbps */
101 FDRIVE_RATE_1M
= 0x03, /* 1 Mbps */
104 typedef enum FDriveSize
{
110 typedef struct FDFormat
{
111 FloppyDriveType drive
;
118 /* In many cases, the total sector size of a format is enough to uniquely
119 * identify it. However, there are some total sector collisions between
120 * formats of different physical size, and these are noted below by
121 * highlighting the total sector size for entries with collisions. */
122 static const FDFormat fd_formats
[] = {
123 /* First entry is default format */
124 /* 1.44 MB 3"1/2 floppy disks */
125 { FLOPPY_DRIVE_TYPE_144
, 18, 80, 1, FDRIVE_RATE_500K
, }, /* 3.5" 2880 */
126 { FLOPPY_DRIVE_TYPE_144
, 20, 80, 1, FDRIVE_RATE_500K
, }, /* 3.5" 3200 */
127 { FLOPPY_DRIVE_TYPE_144
, 21, 80, 1, FDRIVE_RATE_500K
, },
128 { FLOPPY_DRIVE_TYPE_144
, 21, 82, 1, FDRIVE_RATE_500K
, },
129 { FLOPPY_DRIVE_TYPE_144
, 21, 83, 1, FDRIVE_RATE_500K
, },
130 { FLOPPY_DRIVE_TYPE_144
, 22, 80, 1, FDRIVE_RATE_500K
, },
131 { FLOPPY_DRIVE_TYPE_144
, 23, 80, 1, FDRIVE_RATE_500K
, },
132 { FLOPPY_DRIVE_TYPE_144
, 24, 80, 1, FDRIVE_RATE_500K
, },
133 /* 2.88 MB 3"1/2 floppy disks */
134 { FLOPPY_DRIVE_TYPE_288
, 36, 80, 1, FDRIVE_RATE_1M
, },
135 { FLOPPY_DRIVE_TYPE_288
, 39, 80, 1, FDRIVE_RATE_1M
, },
136 { FLOPPY_DRIVE_TYPE_288
, 40, 80, 1, FDRIVE_RATE_1M
, },
137 { FLOPPY_DRIVE_TYPE_288
, 44, 80, 1, FDRIVE_RATE_1M
, },
138 { FLOPPY_DRIVE_TYPE_288
, 48, 80, 1, FDRIVE_RATE_1M
, },
139 /* 720 kB 3"1/2 floppy disks */
140 { FLOPPY_DRIVE_TYPE_144
, 9, 80, 1, FDRIVE_RATE_250K
, }, /* 3.5" 1440 */
141 { FLOPPY_DRIVE_TYPE_144
, 10, 80, 1, FDRIVE_RATE_250K
, },
142 { FLOPPY_DRIVE_TYPE_144
, 10, 82, 1, FDRIVE_RATE_250K
, },
143 { FLOPPY_DRIVE_TYPE_144
, 10, 83, 1, FDRIVE_RATE_250K
, },
144 { FLOPPY_DRIVE_TYPE_144
, 13, 80, 1, FDRIVE_RATE_250K
, },
145 { FLOPPY_DRIVE_TYPE_144
, 14, 80, 1, FDRIVE_RATE_250K
, },
146 /* 1.2 MB 5"1/4 floppy disks */
147 { FLOPPY_DRIVE_TYPE_120
, 15, 80, 1, FDRIVE_RATE_500K
, },
148 { FLOPPY_DRIVE_TYPE_120
, 18, 80, 1, FDRIVE_RATE_500K
, }, /* 5.25" 2880 */
149 { FLOPPY_DRIVE_TYPE_120
, 18, 82, 1, FDRIVE_RATE_500K
, },
150 { FLOPPY_DRIVE_TYPE_120
, 18, 83, 1, FDRIVE_RATE_500K
, },
151 { FLOPPY_DRIVE_TYPE_120
, 20, 80, 1, FDRIVE_RATE_500K
, }, /* 5.25" 3200 */
152 /* 720 kB 5"1/4 floppy disks */
153 { FLOPPY_DRIVE_TYPE_120
, 9, 80, 1, FDRIVE_RATE_250K
, }, /* 5.25" 1440 */
154 { FLOPPY_DRIVE_TYPE_120
, 11, 80, 1, FDRIVE_RATE_250K
, },
155 /* 360 kB 5"1/4 floppy disks */
156 { FLOPPY_DRIVE_TYPE_120
, 9, 40, 1, FDRIVE_RATE_300K
, }, /* 5.25" 720 */
157 { FLOPPY_DRIVE_TYPE_120
, 9, 40, 0, FDRIVE_RATE_300K
, },
158 { FLOPPY_DRIVE_TYPE_120
, 10, 41, 1, FDRIVE_RATE_300K
, },
159 { FLOPPY_DRIVE_TYPE_120
, 10, 42, 1, FDRIVE_RATE_300K
, },
160 /* 320 kB 5"1/4 floppy disks */
161 { FLOPPY_DRIVE_TYPE_120
, 8, 40, 1, FDRIVE_RATE_250K
, },
162 { FLOPPY_DRIVE_TYPE_120
, 8, 40, 0, FDRIVE_RATE_250K
, },
163 /* 360 kB must match 5"1/4 better than 3"1/2... */
164 { FLOPPY_DRIVE_TYPE_144
, 9, 80, 0, FDRIVE_RATE_250K
, }, /* 3.5" 720 */
166 { FLOPPY_DRIVE_TYPE_NONE
, -1, -1, 0, 0, },
169 static FDriveSize
drive_size(FloppyDriveType drive
)
172 case FLOPPY_DRIVE_TYPE_120
:
173 return FDRIVE_SIZE_525
;
174 case FLOPPY_DRIVE_TYPE_144
:
175 case FLOPPY_DRIVE_TYPE_288
:
176 return FDRIVE_SIZE_350
;
178 return FDRIVE_SIZE_UNKNOWN
;
182 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
183 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
185 /* Will always be a fixed parameter for us */
186 #define FD_SECTOR_LEN 512
187 #define FD_SECTOR_SC 2 /* Sector size code */
188 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
190 /* Floppy disk drive emulation */
191 typedef enum FDiskFlags
{
192 FDISK_DBL_SIDES
= 0x01,
200 FloppyDriveType drive
; /* CMOS drive type */
201 uint8_t perpendicular
; /* 2.88 MB access mode */
207 FloppyDriveType disk
; /* Current disk type */
209 uint8_t last_sect
; /* Nb sector per track */
210 uint8_t max_track
; /* Nb of tracks */
211 uint16_t bps
; /* Bytes per sector */
212 uint8_t ro
; /* Is read-only */
213 uint8_t media_changed
; /* Is media changed */
214 uint8_t media_rate
; /* Data rate of medium */
216 bool media_validated
; /* Have we validated the media? */
220 static FloppyDriveType
get_fallback_drive_type(FDrive
*drv
);
222 /* Hack: FD_SEEK is expected to work on empty drives. However, QEMU
223 * currently goes through some pains to keep seeks within the bounds
224 * established by last_sect and max_track. Correcting this is difficult,
225 * as refactoring FDC code tends to expose nasty bugs in the Linux kernel.
227 * For now: allow empty drives to have large bounds so we can seek around,
228 * with the understanding that when a diskette is inserted, the bounds will
229 * properly tighten to match the geometry of that inserted medium.
231 static void fd_empty_seek_hack(FDrive
*drv
)
233 drv
->last_sect
= 0xFF;
234 drv
->max_track
= 0xFF;
237 static void fd_init(FDrive
*drv
)
240 drv
->perpendicular
= 0;
242 drv
->disk
= FLOPPY_DRIVE_TYPE_NONE
;
246 drv
->media_changed
= 1;
249 #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1)
251 static int fd_sector_calc(uint8_t head
, uint8_t track
, uint8_t sect
,
252 uint8_t last_sect
, uint8_t num_sides
)
254 return (((track
* num_sides
) + head
) * last_sect
) + sect
- 1;
257 /* Returns current position, in sectors, for given drive */
258 static int fd_sector(FDrive
*drv
)
260 return fd_sector_calc(drv
->head
, drv
->track
, drv
->sect
, drv
->last_sect
,
264 /* Returns current position, in bytes, for given drive */
265 static int fd_offset(FDrive
*drv
)
267 g_assert(fd_sector(drv
) < INT_MAX
>> BDRV_SECTOR_BITS
);
268 return fd_sector(drv
) << BDRV_SECTOR_BITS
;
271 /* Seek to a new position:
272 * returns 0 if already on right track
273 * returns 1 if track changed
274 * returns 2 if track is invalid
275 * returns 3 if sector is invalid
276 * returns 4 if seek is disabled
278 static int fd_seek(FDrive
*drv
, uint8_t head
, uint8_t track
, uint8_t sect
,
284 if (track
> drv
->max_track
||
285 (head
!= 0 && (drv
->flags
& FDISK_DBL_SIDES
) == 0)) {
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 if (sect
> drv
->last_sect
) {
293 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
294 head
, track
, sect
, 1,
295 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
296 drv
->max_track
, drv
->last_sect
);
299 sector
= fd_sector_calc(head
, track
, sect
, drv
->last_sect
, NUM_SIDES(drv
));
301 if (sector
!= fd_sector(drv
)) {
304 FLOPPY_DPRINTF("error: no implicit seek %d %02x %02x"
305 " (max=%d %02x %02x)\n",
306 head
, track
, sect
, 1, drv
->max_track
,
312 if (drv
->track
!= track
) {
313 if (drv
->blk
!= NULL
&& blk_is_inserted(drv
->blk
)) {
314 drv
->media_changed
= 0;
322 if (drv
->blk
== NULL
|| !blk_is_inserted(drv
->blk
)) {
329 /* Set drive back to track 0 */
330 static void fd_recalibrate(FDrive
*drv
)
332 FLOPPY_DPRINTF("recalibrate\n");
333 fd_seek(drv
, 0, 0, 1, 1);
337 * Determine geometry based on inserted diskette.
338 * Will not operate on an empty drive.
340 * @return: 0 on success, -1 if the drive is empty.
342 static int pick_geometry(FDrive
*drv
)
344 BlockBackend
*blk
= drv
->blk
;
345 const FDFormat
*parse
;
346 uint64_t nb_sectors
, size
;
348 int match
, size_match
, type_match
;
349 bool magic
= drv
->drive
== FLOPPY_DRIVE_TYPE_AUTO
;
351 /* We can only pick a geometry if we have a diskette. */
352 if (!drv
->blk
|| !blk_is_inserted(drv
->blk
) ||
353 drv
->drive
== FLOPPY_DRIVE_TYPE_NONE
)
358 /* We need to determine the likely geometry of the inserted medium.
359 * In order of preference, we look for:
360 * (1) The same drive type and number of sectors,
361 * (2) The same diskette size and number of sectors,
362 * (3) The same drive type.
364 * In all cases, matches that occur higher in the drive table will take
365 * precedence over matches that occur later in the table.
367 blk_get_geometry(blk
, &nb_sectors
);
368 match
= size_match
= type_match
= -1;
370 parse
= &fd_formats
[i
];
371 if (parse
->drive
== FLOPPY_DRIVE_TYPE_NONE
) {
374 size
= (parse
->max_head
+ 1) * parse
->max_track
* parse
->last_sect
;
375 if (nb_sectors
== size
) {
376 if (magic
|| parse
->drive
== drv
->drive
) {
377 /* (1) perfect match -- nb_sectors and drive type */
379 } else if (drive_size(parse
->drive
) == drive_size(drv
->drive
)) {
380 /* (2) size match -- nb_sectors and physical medium size */
381 match
= (match
== -1) ? i
: match
;
383 /* This is suspicious -- Did the user misconfigure? */
384 size_match
= (size_match
== -1) ? i
: size_match
;
386 } else if (type_match
== -1) {
387 if ((parse
->drive
== drv
->drive
) ||
388 (magic
&& (parse
->drive
== get_fallback_drive_type(drv
)))) {
389 /* (3) type match -- nb_sectors mismatch, but matches the type
390 * specified explicitly by the user, or matches the fallback
391 * default type when using the drive autodetect mechanism */
397 /* No exact match found */
399 if (size_match
!= -1) {
400 parse
= &fd_formats
[size_match
];
401 FLOPPY_DPRINTF("User requested floppy drive type '%s', "
402 "but inserted medium appears to be a "
403 "%"PRId64
" sector '%s' type\n",
404 FloppyDriveType_str(drv
->drive
),
406 FloppyDriveType_str(parse
->drive
));
408 assert(type_match
!= -1 && "misconfigured fd_format");
411 parse
= &(fd_formats
[match
]);
414 if (parse
->max_head
== 0) {
415 drv
->flags
&= ~FDISK_DBL_SIDES
;
417 drv
->flags
|= FDISK_DBL_SIDES
;
419 drv
->max_track
= parse
->max_track
;
420 drv
->last_sect
= parse
->last_sect
;
421 drv
->disk
= parse
->drive
;
422 drv
->media_rate
= parse
->rate
;
426 static void pick_drive_type(FDrive
*drv
)
428 if (drv
->drive
!= FLOPPY_DRIVE_TYPE_AUTO
) {
432 if (pick_geometry(drv
) == 0) {
433 drv
->drive
= drv
->disk
;
435 drv
->drive
= get_fallback_drive_type(drv
);
438 g_assert(drv
->drive
!= FLOPPY_DRIVE_TYPE_AUTO
);
441 /* Revalidate a disk drive after a disk change */
442 static void fd_revalidate(FDrive
*drv
)
446 FLOPPY_DPRINTF("revalidate\n");
447 if (drv
->blk
!= NULL
) {
448 drv
->ro
= blk_is_read_only(drv
->blk
);
449 if (!blk_is_inserted(drv
->blk
)) {
450 FLOPPY_DPRINTF("No disk in drive\n");
451 drv
->disk
= FLOPPY_DRIVE_TYPE_NONE
;
452 fd_empty_seek_hack(drv
);
453 } else if (!drv
->media_validated
) {
454 rc
= pick_geometry(drv
);
456 FLOPPY_DPRINTF("Could not validate floppy drive media");
458 drv
->media_validated
= true;
459 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n",
460 (drv
->flags
& FDISK_DBL_SIDES
) ? 2 : 1,
461 drv
->max_track
, drv
->last_sect
,
462 drv
->ro
? "ro" : "rw");
466 FLOPPY_DPRINTF("No drive connected\n");
469 drv
->flags
&= ~FDISK_DBL_SIDES
;
470 drv
->drive
= FLOPPY_DRIVE_TYPE_NONE
;
471 drv
->disk
= FLOPPY_DRIVE_TYPE_NONE
;
475 static void fd_change_cb(void *opaque
, bool load
, Error
**errp
)
477 FDrive
*drive
= opaque
;
480 blk_set_perm(drive
->blk
, 0, BLK_PERM_ALL
, &error_abort
);
482 if (!blkconf_apply_backend_options(drive
->conf
,
483 blk_is_read_only(drive
->blk
), false,
489 drive
->media_changed
= 1;
490 drive
->media_validated
= false;
491 fd_revalidate(drive
);
494 static const BlockDevOps fd_block_ops
= {
495 .change_media_cb
= fd_change_cb
,
499 #define TYPE_FLOPPY_DRIVE "floppy"
500 typedef struct FloppyDrive FloppyDrive
;
501 DECLARE_INSTANCE_CHECKER(FloppyDrive
, FLOPPY_DRIVE
,
508 FloppyDriveType type
;
511 static Property floppy_drive_properties
[] = {
512 DEFINE_PROP_UINT32("unit", FloppyDrive
, unit
, -1),
513 DEFINE_BLOCK_PROPERTIES(FloppyDrive
, conf
),
514 DEFINE_PROP_SIGNED("drive-type", FloppyDrive
, type
,
515 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
517 DEFINE_PROP_END_OF_LIST(),
520 static void floppy_drive_realize(DeviceState
*qdev
, Error
**errp
)
522 FloppyDrive
*dev
= FLOPPY_DRIVE(qdev
);
523 FloppyBus
*bus
= FLOPPY_BUS(qdev
->parent_bus
);
528 if (dev
->unit
== -1) {
529 for (dev
->unit
= 0; dev
->unit
< MAX_FD
; dev
->unit
++) {
530 drive
= get_drv(bus
->fdc
, dev
->unit
);
537 if (dev
->unit
>= MAX_FD
) {
538 error_setg(errp
, "Can't create floppy unit %d, bus supports "
539 "only %d units", dev
->unit
, MAX_FD
);
543 drive
= get_drv(bus
->fdc
, dev
->unit
);
545 error_setg(errp
, "Floppy unit %d is in use", dev
->unit
);
549 if (!dev
->conf
.blk
) {
550 /* Anonymous BlockBackend for an empty drive */
551 dev
->conf
.blk
= blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL
);
552 ret
= blk_attach_dev(dev
->conf
.blk
, qdev
);
555 /* Don't take write permissions on an empty drive to allow attaching a
556 * read-only node later */
559 read_only
= !blk_bs(dev
->conf
.blk
) || blk_is_read_only(dev
->conf
.blk
);
562 if (!blkconf_blocksizes(&dev
->conf
, errp
)) {
566 if (dev
->conf
.logical_block_size
!= 512 ||
567 dev
->conf
.physical_block_size
!= 512)
569 error_setg(errp
, "Physical and logical block size must "
570 "be 512 for floppy");
574 /* rerror/werror aren't supported by fdc and therefore not even registered
575 * with qdev. So set the defaults manually before they are used in
576 * blkconf_apply_backend_options(). */
577 dev
->conf
.rerror
= BLOCKDEV_ON_ERROR_AUTO
;
578 dev
->conf
.werror
= BLOCKDEV_ON_ERROR_AUTO
;
580 if (!blkconf_apply_backend_options(&dev
->conf
, read_only
, false, errp
)) {
584 /* 'enospc' is the default for -drive, 'report' is what blk_new() gives us
585 * for empty drives. */
586 if (blk_get_on_error(dev
->conf
.blk
, 0) != BLOCKDEV_ON_ERROR_ENOSPC
&&
587 blk_get_on_error(dev
->conf
.blk
, 0) != BLOCKDEV_ON_ERROR_REPORT
) {
588 error_setg(errp
, "fdc doesn't support drive option werror");
591 if (blk_get_on_error(dev
->conf
.blk
, 1) != BLOCKDEV_ON_ERROR_REPORT
) {
592 error_setg(errp
, "fdc doesn't support drive option rerror");
596 drive
->conf
= &dev
->conf
;
597 drive
->blk
= dev
->conf
.blk
;
598 drive
->fdctrl
= bus
->fdc
;
601 blk_set_dev_ops(drive
->blk
, &fd_block_ops
, drive
);
603 /* Keep 'type' qdev property and FDrive->drive in sync */
604 drive
->drive
= dev
->type
;
605 pick_drive_type(drive
);
606 dev
->type
= drive
->drive
;
608 fd_revalidate(drive
);
611 static void floppy_drive_class_init(ObjectClass
*klass
, void *data
)
613 DeviceClass
*k
= DEVICE_CLASS(klass
);
614 k
->realize
= floppy_drive_realize
;
615 set_bit(DEVICE_CATEGORY_STORAGE
, k
->categories
);
616 k
->bus_type
= TYPE_FLOPPY_BUS
;
617 device_class_set_props(k
, floppy_drive_properties
);
618 k
->desc
= "virtual floppy drive";
621 static const TypeInfo floppy_drive_info
= {
622 .name
= TYPE_FLOPPY_DRIVE
,
623 .parent
= TYPE_DEVICE
,
624 .instance_size
= sizeof(FloppyDrive
),
625 .class_init
= floppy_drive_class_init
,
628 /********************************************************/
629 /* Intel 82078 floppy disk controller emulation */
631 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
);
632 static void fdctrl_to_command_phase(FDCtrl
*fdctrl
);
633 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
634 int dma_pos
, int dma_len
);
635 static void fdctrl_raise_irq(FDCtrl
*fdctrl
);
636 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
);
638 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
);
639 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
);
640 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
);
641 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
);
642 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
);
643 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
);
644 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
);
645 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
);
646 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
);
647 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
);
648 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
);
649 static void fdctrl_write_ccr(FDCtrl
*fdctrl
, uint32_t value
);
661 FD_STATE_MULTI
= 0x01, /* multi track flag */
662 FD_STATE_FORMAT
= 0x02, /* format flag */
678 FD_CMD_READ_TRACK
= 0x02,
679 FD_CMD_SPECIFY
= 0x03,
680 FD_CMD_SENSE_DRIVE_STATUS
= 0x04,
683 FD_CMD_RECALIBRATE
= 0x07,
684 FD_CMD_SENSE_INTERRUPT_STATUS
= 0x08,
685 FD_CMD_WRITE_DELETED
= 0x09,
686 FD_CMD_READ_ID
= 0x0a,
687 FD_CMD_READ_DELETED
= 0x0c,
688 FD_CMD_FORMAT_TRACK
= 0x0d,
689 FD_CMD_DUMPREG
= 0x0e,
691 FD_CMD_VERSION
= 0x10,
692 FD_CMD_SCAN_EQUAL
= 0x11,
693 FD_CMD_PERPENDICULAR_MODE
= 0x12,
694 FD_CMD_CONFIGURE
= 0x13,
696 FD_CMD_VERIFY
= 0x16,
697 FD_CMD_POWERDOWN_MODE
= 0x17,
698 FD_CMD_PART_ID
= 0x18,
699 FD_CMD_SCAN_LOW_OR_EQUAL
= 0x19,
700 FD_CMD_SCAN_HIGH_OR_EQUAL
= 0x1d,
702 FD_CMD_OPTION
= 0x33,
703 FD_CMD_RESTORE
= 0x4e,
704 FD_CMD_DRIVE_SPECIFICATION_COMMAND
= 0x8e,
705 FD_CMD_RELATIVE_SEEK_OUT
= 0x8f,
706 FD_CMD_FORMAT_AND_WRITE
= 0xcd,
707 FD_CMD_RELATIVE_SEEK_IN
= 0xcf,
711 FD_CONFIG_PRETRK
= 0xff, /* Pre-compensation set to track 0 */
712 FD_CONFIG_FIFOTHR
= 0x0f, /* FIFO threshold set to 1 byte */
713 FD_CONFIG_POLL
= 0x10, /* Poll enabled */
714 FD_CONFIG_EFIFO
= 0x20, /* FIFO disabled */
715 FD_CONFIG_EIS
= 0x40, /* No implied seeks */
724 FD_SR0_ABNTERM
= 0x40,
725 FD_SR0_INVCMD
= 0x80,
726 FD_SR0_RDYCHG
= 0xc0,
730 FD_SR1_MA
= 0x01, /* Missing address mark */
731 FD_SR1_NW
= 0x02, /* Not writable */
732 FD_SR1_EC
= 0x80, /* End of cylinder */
736 FD_SR2_SNS
= 0x04, /* Scan not satisfied */
737 FD_SR2_SEH
= 0x08, /* Scan equal hit */
748 FD_SRA_INTPEND
= 0x80,
762 FD_DOR_SELMASK
= 0x03,
764 FD_DOR_SELMASK
= 0x01,
766 FD_DOR_nRESET
= 0x04,
768 FD_DOR_MOTEN0
= 0x10,
769 FD_DOR_MOTEN1
= 0x20,
770 FD_DOR_MOTEN2
= 0x40,
771 FD_DOR_MOTEN3
= 0x80,
776 FD_TDR_BOOTSEL
= 0x0c,
778 FD_TDR_BOOTSEL
= 0x04,
783 FD_DSR_DRATEMASK
= 0x03,
784 FD_DSR_PWRDOWN
= 0x40,
785 FD_DSR_SWRESET
= 0x80,
789 FD_MSR_DRV0BUSY
= 0x01,
790 FD_MSR_DRV1BUSY
= 0x02,
791 FD_MSR_DRV2BUSY
= 0x04,
792 FD_MSR_DRV3BUSY
= 0x08,
793 FD_MSR_CMDBUSY
= 0x10,
794 FD_MSR_NONDMA
= 0x20,
800 FD_DIR_DSKCHG
= 0x80,
804 * See chapter 5.0 "Controller phases" of the spec:
807 * The host writes a command and its parameters into the FIFO. The command
808 * phase is completed when all parameters for the command have been supplied,
809 * and execution phase is entered.
812 * Data transfers, either DMA or non-DMA. For non-DMA transfers, the FIFO
813 * contains the payload now, otherwise it's unused. When all bytes of the
814 * required data have been transferred, the state is switched to either result
815 * phase (if the command produces status bytes) or directly back into the
816 * command phase for the next command.
819 * The host reads out the FIFO, which contains one or more result bytes now.
822 /* Only for migration: reconstruct phase from registers like qemu 2.3 */
823 FD_PHASE_RECONSTRUCT
= 0,
825 FD_PHASE_COMMAND
= 1,
826 FD_PHASE_EXECUTION
= 2,
830 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
831 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
836 /* Controller state */
837 QEMUTimer
*result_timer
;
841 /* Controller's identification */
847 uint8_t dor_vmstate
; /* only used as temp during vmstate */
862 uint8_t eot
; /* last wanted sector */
863 /* States kept only to be returned back */
864 /* precompensation */
868 /* Power down config (also with status regB access mode */
872 uint8_t num_floppies
;
873 FDrive drives
[MAX_FD
];
876 FloppyDriveType type
;
877 } qdev_for_drives
[MAX_FD
];
879 uint32_t check_media_rate
;
880 FloppyDriveType fallback
; /* type=auto failure fallback */
884 PortioList portio_list
;
887 static FloppyDriveType
get_fallback_drive_type(FDrive
*drv
)
889 return drv
->fdctrl
->fallback
;
892 #define TYPE_SYSBUS_FDC "base-sysbus-fdc"
893 typedef struct FDCtrlSysBus FDCtrlSysBus
;
894 DECLARE_INSTANCE_CHECKER(FDCtrlSysBus
, SYSBUS_FDC
,
897 struct FDCtrlSysBus
{
899 SysBusDevice parent_obj
;
905 typedef struct FDCtrlISABus FDCtrlISABus
;
906 DECLARE_INSTANCE_CHECKER(FDCtrlISABus
, ISA_FDC
,
909 struct FDCtrlISABus
{
910 ISADevice parent_obj
;
920 static uint32_t fdctrl_read (void *opaque
, uint32_t reg
)
922 FDCtrl
*fdctrl
= opaque
;
928 retval
= fdctrl_read_statusA(fdctrl
);
931 retval
= fdctrl_read_statusB(fdctrl
);
934 retval
= fdctrl_read_dor(fdctrl
);
937 retval
= fdctrl_read_tape(fdctrl
);
940 retval
= fdctrl_read_main_status(fdctrl
);
943 retval
= fdctrl_read_data(fdctrl
);
946 retval
= fdctrl_read_dir(fdctrl
);
949 retval
= (uint32_t)(-1);
952 trace_fdc_ioport_read(reg
, retval
);
957 static void fdctrl_write (void *opaque
, uint32_t reg
, uint32_t value
)
959 FDCtrl
*fdctrl
= opaque
;
962 trace_fdc_ioport_write(reg
, value
);
965 fdctrl_write_dor(fdctrl
, value
);
968 fdctrl_write_tape(fdctrl
, value
);
971 fdctrl_write_rate(fdctrl
, value
);
974 fdctrl_write_data(fdctrl
, value
);
977 fdctrl_write_ccr(fdctrl
, value
);
984 static uint64_t fdctrl_read_mem (void *opaque
, hwaddr reg
,
987 return fdctrl_read(opaque
, (uint32_t)reg
);
990 static void fdctrl_write_mem (void *opaque
, hwaddr reg
,
991 uint64_t value
, unsigned size
)
993 fdctrl_write(opaque
, (uint32_t)reg
, value
);
996 static const MemoryRegionOps fdctrl_mem_ops
= {
997 .read
= fdctrl_read_mem
,
998 .write
= fdctrl_write_mem
,
999 .endianness
= DEVICE_NATIVE_ENDIAN
,
1002 static const MemoryRegionOps fdctrl_mem_strict_ops
= {
1003 .read
= fdctrl_read_mem
,
1004 .write
= fdctrl_write_mem
,
1005 .endianness
= DEVICE_NATIVE_ENDIAN
,
1007 .min_access_size
= 1,
1008 .max_access_size
= 1,
1012 static bool fdrive_media_changed_needed(void *opaque
)
1014 FDrive
*drive
= opaque
;
1016 return (drive
->blk
!= NULL
&& drive
->media_changed
!= 1);
1019 static const VMStateDescription vmstate_fdrive_media_changed
= {
1020 .name
= "fdrive/media_changed",
1022 .minimum_version_id
= 1,
1023 .needed
= fdrive_media_changed_needed
,
1024 .fields
= (VMStateField
[]) {
1025 VMSTATE_UINT8(media_changed
, FDrive
),
1026 VMSTATE_END_OF_LIST()
1030 static bool fdrive_media_rate_needed(void *opaque
)
1032 FDrive
*drive
= opaque
;
1034 return drive
->fdctrl
->check_media_rate
;
1037 static const VMStateDescription vmstate_fdrive_media_rate
= {
1038 .name
= "fdrive/media_rate",
1040 .minimum_version_id
= 1,
1041 .needed
= fdrive_media_rate_needed
,
1042 .fields
= (VMStateField
[]) {
1043 VMSTATE_UINT8(media_rate
, FDrive
),
1044 VMSTATE_END_OF_LIST()
1048 static bool fdrive_perpendicular_needed(void *opaque
)
1050 FDrive
*drive
= opaque
;
1052 return drive
->perpendicular
!= 0;
1055 static const VMStateDescription vmstate_fdrive_perpendicular
= {
1056 .name
= "fdrive/perpendicular",
1058 .minimum_version_id
= 1,
1059 .needed
= fdrive_perpendicular_needed
,
1060 .fields
= (VMStateField
[]) {
1061 VMSTATE_UINT8(perpendicular
, FDrive
),
1062 VMSTATE_END_OF_LIST()
1066 static int fdrive_post_load(void *opaque
, int version_id
)
1068 fd_revalidate(opaque
);
1072 static const VMStateDescription vmstate_fdrive
= {
1075 .minimum_version_id
= 1,
1076 .post_load
= fdrive_post_load
,
1077 .fields
= (VMStateField
[]) {
1078 VMSTATE_UINT8(head
, FDrive
),
1079 VMSTATE_UINT8(track
, FDrive
),
1080 VMSTATE_UINT8(sect
, FDrive
),
1081 VMSTATE_END_OF_LIST()
1083 .subsections
= (const VMStateDescription
*[]) {
1084 &vmstate_fdrive_media_changed
,
1085 &vmstate_fdrive_media_rate
,
1086 &vmstate_fdrive_perpendicular
,
1092 * Reconstructs the phase from register values according to the logic that was
1093 * implemented in qemu 2.3. This is the default value that is used if the phase
1094 * subsection is not present on migration.
1096 * Don't change this function to reflect newer qemu versions, it is part of
1097 * the migration ABI.
1099 static int reconstruct_phase(FDCtrl
*fdctrl
)
1101 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1102 return FD_PHASE_EXECUTION
;
1103 } else if ((fdctrl
->msr
& FD_MSR_RQM
) == 0) {
1104 /* qemu 2.3 disabled RQM only during DMA transfers */
1105 return FD_PHASE_EXECUTION
;
1106 } else if (fdctrl
->msr
& FD_MSR_DIO
) {
1107 return FD_PHASE_RESULT
;
1109 return FD_PHASE_COMMAND
;
1113 static int fdc_pre_save(void *opaque
)
1117 s
->dor_vmstate
= s
->dor
| GET_CUR_DRV(s
);
1122 static int fdc_pre_load(void *opaque
)
1125 s
->phase
= FD_PHASE_RECONSTRUCT
;
1129 static int fdc_post_load(void *opaque
, int version_id
)
1133 SET_CUR_DRV(s
, s
->dor_vmstate
& FD_DOR_SELMASK
);
1134 s
->dor
= s
->dor_vmstate
& ~FD_DOR_SELMASK
;
1136 if (s
->phase
== FD_PHASE_RECONSTRUCT
) {
1137 s
->phase
= reconstruct_phase(s
);
1143 static bool fdc_reset_sensei_needed(void *opaque
)
1147 return s
->reset_sensei
!= 0;
1150 static const VMStateDescription vmstate_fdc_reset_sensei
= {
1151 .name
= "fdc/reset_sensei",
1153 .minimum_version_id
= 1,
1154 .needed
= fdc_reset_sensei_needed
,
1155 .fields
= (VMStateField
[]) {
1156 VMSTATE_INT32(reset_sensei
, FDCtrl
),
1157 VMSTATE_END_OF_LIST()
1161 static bool fdc_result_timer_needed(void *opaque
)
1165 return timer_pending(s
->result_timer
);
1168 static const VMStateDescription vmstate_fdc_result_timer
= {
1169 .name
= "fdc/result_timer",
1171 .minimum_version_id
= 1,
1172 .needed
= fdc_result_timer_needed
,
1173 .fields
= (VMStateField
[]) {
1174 VMSTATE_TIMER_PTR(result_timer
, FDCtrl
),
1175 VMSTATE_END_OF_LIST()
1179 static bool fdc_phase_needed(void *opaque
)
1181 FDCtrl
*fdctrl
= opaque
;
1183 return reconstruct_phase(fdctrl
) != fdctrl
->phase
;
1186 static const VMStateDescription vmstate_fdc_phase
= {
1187 .name
= "fdc/phase",
1189 .minimum_version_id
= 1,
1190 .needed
= fdc_phase_needed
,
1191 .fields
= (VMStateField
[]) {
1192 VMSTATE_UINT8(phase
, FDCtrl
),
1193 VMSTATE_END_OF_LIST()
1197 static const VMStateDescription vmstate_fdc
= {
1200 .minimum_version_id
= 2,
1201 .pre_save
= fdc_pre_save
,
1202 .pre_load
= fdc_pre_load
,
1203 .post_load
= fdc_post_load
,
1204 .fields
= (VMStateField
[]) {
1205 /* Controller State */
1206 VMSTATE_UINT8(sra
, FDCtrl
),
1207 VMSTATE_UINT8(srb
, FDCtrl
),
1208 VMSTATE_UINT8(dor_vmstate
, FDCtrl
),
1209 VMSTATE_UINT8(tdr
, FDCtrl
),
1210 VMSTATE_UINT8(dsr
, FDCtrl
),
1211 VMSTATE_UINT8(msr
, FDCtrl
),
1212 VMSTATE_UINT8(status0
, FDCtrl
),
1213 VMSTATE_UINT8(status1
, FDCtrl
),
1214 VMSTATE_UINT8(status2
, FDCtrl
),
1216 VMSTATE_VARRAY_INT32(fifo
, FDCtrl
, fifo_size
, 0, vmstate_info_uint8
,
1218 VMSTATE_UINT32(data_pos
, FDCtrl
),
1219 VMSTATE_UINT32(data_len
, FDCtrl
),
1220 VMSTATE_UINT8(data_state
, FDCtrl
),
1221 VMSTATE_UINT8(data_dir
, FDCtrl
),
1222 VMSTATE_UINT8(eot
, FDCtrl
),
1223 /* States kept only to be returned back */
1224 VMSTATE_UINT8(timer0
, FDCtrl
),
1225 VMSTATE_UINT8(timer1
, FDCtrl
),
1226 VMSTATE_UINT8(precomp_trk
, FDCtrl
),
1227 VMSTATE_UINT8(config
, FDCtrl
),
1228 VMSTATE_UINT8(lock
, FDCtrl
),
1229 VMSTATE_UINT8(pwrd
, FDCtrl
),
1230 VMSTATE_UINT8_EQUAL(num_floppies
, FDCtrl
, NULL
),
1231 VMSTATE_STRUCT_ARRAY(drives
, FDCtrl
, MAX_FD
, 1,
1232 vmstate_fdrive
, FDrive
),
1233 VMSTATE_END_OF_LIST()
1235 .subsections
= (const VMStateDescription
*[]) {
1236 &vmstate_fdc_reset_sensei
,
1237 &vmstate_fdc_result_timer
,
1243 static void fdctrl_external_reset_sysbus(DeviceState
*d
)
1245 FDCtrlSysBus
*sys
= SYSBUS_FDC(d
);
1246 FDCtrl
*s
= &sys
->state
;
1251 static void fdctrl_external_reset_isa(DeviceState
*d
)
1253 FDCtrlISABus
*isa
= ISA_FDC(d
);
1254 FDCtrl
*s
= &isa
->state
;
1259 static void fdctrl_handle_tc(void *opaque
, int irq
, int level
)
1261 //FDCtrl *s = opaque;
1265 FLOPPY_DPRINTF("TC pulsed\n");
1269 /* Change IRQ state */
1270 static void fdctrl_reset_irq(FDCtrl
*fdctrl
)
1272 fdctrl
->status0
= 0;
1273 if (!(fdctrl
->sra
& FD_SRA_INTPEND
))
1275 FLOPPY_DPRINTF("Reset interrupt\n");
1276 qemu_set_irq(fdctrl
->irq
, 0);
1277 fdctrl
->sra
&= ~FD_SRA_INTPEND
;
1280 static void fdctrl_raise_irq(FDCtrl
*fdctrl
)
1282 if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
1283 qemu_set_irq(fdctrl
->irq
, 1);
1284 fdctrl
->sra
|= FD_SRA_INTPEND
;
1287 fdctrl
->reset_sensei
= 0;
1288 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl
->status0
);
1291 /* Reset controller */
1292 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
)
1296 FLOPPY_DPRINTF("reset controller\n");
1297 fdctrl_reset_irq(fdctrl
);
1298 /* Initialise controller */
1301 if (!fdctrl
->drives
[1].blk
) {
1302 fdctrl
->sra
|= FD_SRA_nDRV2
;
1304 fdctrl
->cur_drv
= 0;
1305 fdctrl
->dor
= FD_DOR_nRESET
;
1306 fdctrl
->dor
|= (fdctrl
->dma_chann
!= -1) ? FD_DOR_DMAEN
: 0;
1307 fdctrl
->msr
= FD_MSR_RQM
;
1308 fdctrl
->reset_sensei
= 0;
1309 timer_del(fdctrl
->result_timer
);
1311 fdctrl
->data_pos
= 0;
1312 fdctrl
->data_len
= 0;
1313 fdctrl
->data_state
= 0;
1314 fdctrl
->data_dir
= FD_DIR_WRITE
;
1315 for (i
= 0; i
< MAX_FD
; i
++)
1316 fd_recalibrate(&fdctrl
->drives
[i
]);
1317 fdctrl_to_command_phase(fdctrl
);
1319 fdctrl
->status0
|= FD_SR0_RDYCHG
;
1320 fdctrl_raise_irq(fdctrl
);
1321 fdctrl
->reset_sensei
= FD_RESET_SENSEI_COUNT
;
1325 static inline FDrive
*drv0(FDCtrl
*fdctrl
)
1327 return &fdctrl
->drives
[(fdctrl
->tdr
& FD_TDR_BOOTSEL
) >> 2];
1330 static inline FDrive
*drv1(FDCtrl
*fdctrl
)
1332 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (1 << 2))
1333 return &fdctrl
->drives
[1];
1335 return &fdctrl
->drives
[0];
1339 static inline FDrive
*drv2(FDCtrl
*fdctrl
)
1341 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (2 << 2))
1342 return &fdctrl
->drives
[2];
1344 return &fdctrl
->drives
[1];
1347 static inline FDrive
*drv3(FDCtrl
*fdctrl
)
1349 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (3 << 2))
1350 return &fdctrl
->drives
[3];
1352 return &fdctrl
->drives
[2];
1356 static FDrive
*get_drv(FDCtrl
*fdctrl
, int unit
)
1359 case 0: return drv0(fdctrl
);
1360 case 1: return drv1(fdctrl
);
1362 case 2: return drv2(fdctrl
);
1363 case 3: return drv3(fdctrl
);
1365 default: return NULL
;
1369 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
)
1371 return get_drv(fdctrl
, fdctrl
->cur_drv
);
1374 /* Status A register : 0x00 (read-only) */
1375 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
)
1377 uint32_t retval
= fdctrl
->sra
;
1379 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval
);
1384 /* Status B register : 0x01 (read-only) */
1385 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
)
1387 uint32_t retval
= fdctrl
->srb
;
1389 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval
);
1394 /* Digital output register : 0x02 */
1395 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
)
1397 uint32_t retval
= fdctrl
->dor
;
1399 /* Selected drive */
1400 retval
|= fdctrl
->cur_drv
;
1401 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval
);
1406 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
)
1408 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value
);
1411 if (value
& FD_DOR_MOTEN0
)
1412 fdctrl
->srb
|= FD_SRB_MTR0
;
1414 fdctrl
->srb
&= ~FD_SRB_MTR0
;
1415 if (value
& FD_DOR_MOTEN1
)
1416 fdctrl
->srb
|= FD_SRB_MTR1
;
1418 fdctrl
->srb
&= ~FD_SRB_MTR1
;
1422 fdctrl
->srb
|= FD_SRB_DR0
;
1424 fdctrl
->srb
&= ~FD_SRB_DR0
;
1427 if (!(value
& FD_DOR_nRESET
)) {
1428 if (fdctrl
->dor
& FD_DOR_nRESET
) {
1429 FLOPPY_DPRINTF("controller enter RESET state\n");
1432 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1433 FLOPPY_DPRINTF("controller out of RESET state\n");
1434 fdctrl_reset(fdctrl
, 1);
1435 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1438 /* Selected drive */
1439 fdctrl
->cur_drv
= value
& FD_DOR_SELMASK
;
1441 fdctrl
->dor
= value
;
1444 /* Tape drive register : 0x03 */
1445 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
)
1447 uint32_t retval
= fdctrl
->tdr
;
1449 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval
);
1454 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
)
1457 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1458 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1461 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value
);
1462 /* Disk boot selection indicator */
1463 fdctrl
->tdr
= value
& FD_TDR_BOOTSEL
;
1464 /* Tape indicators: never allow */
1467 /* Main status register : 0x04 (read) */
1468 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
)
1470 uint32_t retval
= fdctrl
->msr
;
1472 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1473 fdctrl
->dor
|= FD_DOR_nRESET
;
1475 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval
);
1480 /* Data select rate register : 0x04 (write) */
1481 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
)
1484 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1485 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1488 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value
);
1489 /* Reset: autoclear */
1490 if (value
& FD_DSR_SWRESET
) {
1491 fdctrl
->dor
&= ~FD_DOR_nRESET
;
1492 fdctrl_reset(fdctrl
, 1);
1493 fdctrl
->dor
|= FD_DOR_nRESET
;
1495 if (value
& FD_DSR_PWRDOWN
) {
1496 fdctrl_reset(fdctrl
, 1);
1498 fdctrl
->dsr
= value
;
1501 /* Configuration control register: 0x07 (write) */
1502 static void fdctrl_write_ccr(FDCtrl
*fdctrl
, uint32_t value
)
1505 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1506 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1509 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value
);
1511 /* Only the rate selection bits used in AT mode, and we
1512 * store those in the DSR.
1514 fdctrl
->dsr
= (fdctrl
->dsr
& ~FD_DSR_DRATEMASK
) |
1515 (value
& FD_DSR_DRATEMASK
);
1518 static int fdctrl_media_changed(FDrive
*drv
)
1520 return drv
->media_changed
;
1523 /* Digital input register : 0x07 (read-only) */
1524 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
)
1526 uint32_t retval
= 0;
1528 if (fdctrl_media_changed(get_cur_drv(fdctrl
))) {
1529 retval
|= FD_DIR_DSKCHG
;
1532 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval
);
1538 /* Clear the FIFO and update the state for receiving the next command */
1539 static void fdctrl_to_command_phase(FDCtrl
*fdctrl
)
1541 fdctrl
->phase
= FD_PHASE_COMMAND
;
1542 fdctrl
->data_dir
= FD_DIR_WRITE
;
1543 fdctrl
->data_pos
= 0;
1544 fdctrl
->data_len
= 1; /* Accept command byte, adjust for params later */
1545 fdctrl
->msr
&= ~(FD_MSR_CMDBUSY
| FD_MSR_DIO
);
1546 fdctrl
->msr
|= FD_MSR_RQM
;
1549 /* Update the state to allow the guest to read out the command status.
1550 * @fifo_len is the number of result bytes to be read out. */
1551 static void fdctrl_to_result_phase(FDCtrl
*fdctrl
, int fifo_len
)
1553 fdctrl
->phase
= FD_PHASE_RESULT
;
1554 fdctrl
->data_dir
= FD_DIR_READ
;
1555 fdctrl
->data_len
= fifo_len
;
1556 fdctrl
->data_pos
= 0;
1557 fdctrl
->msr
|= FD_MSR_CMDBUSY
| FD_MSR_RQM
| FD_MSR_DIO
;
1560 /* Set an error: unimplemented/unknown command */
1561 static void fdctrl_unimplemented(FDCtrl
*fdctrl
, int direction
)
1563 qemu_log_mask(LOG_UNIMP
, "fdc: unimplemented command 0x%02x\n",
1565 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
1566 fdctrl_to_result_phase(fdctrl
, 1);
1569 /* Seek to next sector
1570 * returns 0 when end of track reached (for DBL_SIDES on head 1)
1571 * otherwise returns 1
1573 static int fdctrl_seek_to_next_sect(FDCtrl
*fdctrl
, FDrive
*cur_drv
)
1575 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1576 cur_drv
->head
, cur_drv
->track
, cur_drv
->sect
,
1577 fd_sector(cur_drv
));
1578 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1580 uint8_t new_head
= cur_drv
->head
;
1581 uint8_t new_track
= cur_drv
->track
;
1582 uint8_t new_sect
= cur_drv
->sect
;
1586 if (new_sect
>= cur_drv
->last_sect
||
1587 new_sect
== fdctrl
->eot
) {
1589 if (FD_MULTI_TRACK(fdctrl
->data_state
)) {
1590 if (new_head
== 0 &&
1591 (cur_drv
->flags
& FDISK_DBL_SIDES
) != 0) {
1596 fdctrl
->status0
|= FD_SR0_SEEK
;
1597 if ((cur_drv
->flags
& FDISK_DBL_SIDES
) == 0) {
1602 fdctrl
->status0
|= FD_SR0_SEEK
;
1607 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1608 new_head
, new_track
, new_sect
, fd_sector(cur_drv
));
1613 fd_seek(cur_drv
, new_head
, new_track
, new_sect
, 1);
1617 /* Callback for transfer end (stop or abort) */
1618 static void fdctrl_stop_transfer(FDCtrl
*fdctrl
, uint8_t status0
,
1619 uint8_t status1
, uint8_t status2
)
1622 cur_drv
= get_cur_drv(fdctrl
);
1624 fdctrl
->status0
&= ~(FD_SR0_DS0
| FD_SR0_DS1
| FD_SR0_HEAD
);
1625 fdctrl
->status0
|= GET_CUR_DRV(fdctrl
);
1626 if (cur_drv
->head
) {
1627 fdctrl
->status0
|= FD_SR0_HEAD
;
1629 fdctrl
->status0
|= status0
;
1631 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1632 status0
, status1
, status2
, fdctrl
->status0
);
1633 fdctrl
->fifo
[0] = fdctrl
->status0
;
1634 fdctrl
->fifo
[1] = status1
;
1635 fdctrl
->fifo
[2] = status2
;
1636 fdctrl
->fifo
[3] = cur_drv
->track
;
1637 fdctrl
->fifo
[4] = cur_drv
->head
;
1638 fdctrl
->fifo
[5] = cur_drv
->sect
;
1639 fdctrl
->fifo
[6] = FD_SECTOR_SC
;
1640 fdctrl
->data_dir
= FD_DIR_READ
;
1641 if (fdctrl
->dma_chann
!= -1 && !(fdctrl
->msr
& FD_MSR_NONDMA
)) {
1642 IsaDmaClass
*k
= ISADMA_GET_CLASS(fdctrl
->dma
);
1643 k
->release_DREQ(fdctrl
->dma
, fdctrl
->dma_chann
);
1645 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
1646 fdctrl
->msr
&= ~FD_MSR_NONDMA
;
1648 fdctrl_to_result_phase(fdctrl
, 7);
1649 fdctrl_raise_irq(fdctrl
);
1652 /* Prepare a data transfer (either DMA or FIFO) */
1653 static void fdctrl_start_transfer(FDCtrl
*fdctrl
, int direction
)
1658 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1659 cur_drv
= get_cur_drv(fdctrl
);
1660 kt
= fdctrl
->fifo
[2];
1661 kh
= fdctrl
->fifo
[3];
1662 ks
= fdctrl
->fifo
[4];
1663 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1664 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1665 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1666 NUM_SIDES(cur_drv
)));
1667 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1670 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1671 fdctrl
->fifo
[3] = kt
;
1672 fdctrl
->fifo
[4] = kh
;
1673 fdctrl
->fifo
[5] = ks
;
1677 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1678 fdctrl
->fifo
[3] = kt
;
1679 fdctrl
->fifo
[4] = kh
;
1680 fdctrl
->fifo
[5] = ks
;
1683 /* No seek enabled */
1684 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1685 fdctrl
->fifo
[3] = kt
;
1686 fdctrl
->fifo
[4] = kh
;
1687 fdctrl
->fifo
[5] = ks
;
1690 fdctrl
->status0
|= FD_SR0_SEEK
;
1696 /* Check the data rate. If the programmed data rate does not match
1697 * the currently inserted medium, the operation has to fail. */
1698 if (fdctrl
->check_media_rate
&&
1699 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
1700 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1701 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
1702 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
1703 fdctrl
->fifo
[3] = kt
;
1704 fdctrl
->fifo
[4] = kh
;
1705 fdctrl
->fifo
[5] = ks
;
1709 /* Set the FIFO state */
1710 fdctrl
->data_dir
= direction
;
1711 fdctrl
->data_pos
= 0;
1712 assert(fdctrl
->msr
& FD_MSR_CMDBUSY
);
1713 if (fdctrl
->fifo
[0] & 0x80)
1714 fdctrl
->data_state
|= FD_STATE_MULTI
;
1716 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1717 if (fdctrl
->fifo
[5] == 0) {
1718 fdctrl
->data_len
= fdctrl
->fifo
[8];
1721 fdctrl
->data_len
= 128 << (fdctrl
->fifo
[5] > 7 ? 7 : fdctrl
->fifo
[5]);
1722 tmp
= (fdctrl
->fifo
[6] - ks
+ 1);
1723 if (fdctrl
->fifo
[0] & 0x80)
1724 tmp
+= fdctrl
->fifo
[6];
1725 fdctrl
->data_len
*= tmp
;
1727 fdctrl
->eot
= fdctrl
->fifo
[6];
1728 if (fdctrl
->dor
& FD_DOR_DMAEN
) {
1729 /* DMA transfer is enabled. */
1730 IsaDmaClass
*k
= ISADMA_GET_CLASS(fdctrl
->dma
);
1732 FLOPPY_DPRINTF("direction=%d (%d - %d)\n",
1733 direction
, (128 << fdctrl
->fifo
[5]) *
1734 (cur_drv
->last_sect
- ks
+ 1), fdctrl
->data_len
);
1736 /* No access is allowed until DMA transfer has completed */
1737 fdctrl
->msr
&= ~FD_MSR_RQM
;
1738 if (direction
!= FD_DIR_VERIFY
) {
1740 * Now, we just have to wait for the DMA controller to
1743 k
->hold_DREQ(fdctrl
->dma
, fdctrl
->dma_chann
);
1744 k
->schedule(fdctrl
->dma
);
1746 /* Start transfer */
1747 fdctrl_transfer_handler(fdctrl
, fdctrl
->dma_chann
, 0,
1752 FLOPPY_DPRINTF("start non-DMA transfer\n");
1753 fdctrl
->msr
|= FD_MSR_NONDMA
| FD_MSR_RQM
;
1754 if (direction
!= FD_DIR_WRITE
)
1755 fdctrl
->msr
|= FD_MSR_DIO
;
1756 /* IO based transfer: calculate len */
1757 fdctrl_raise_irq(fdctrl
);
1760 /* Prepare a transfer of deleted data */
1761 static void fdctrl_start_transfer_del(FDCtrl
*fdctrl
, int direction
)
1763 qemu_log_mask(LOG_UNIMP
, "fdctrl_start_transfer_del() unimplemented\n");
1765 /* We don't handle deleted data,
1766 * so we don't return *ANYTHING*
1768 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1771 /* handlers for DMA transfers */
1772 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
1773 int dma_pos
, int dma_len
)
1777 int len
, start_pos
, rel_pos
;
1778 uint8_t status0
= 0x00, status1
= 0x00, status2
= 0x00;
1782 if (fdctrl
->msr
& FD_MSR_RQM
) {
1783 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1786 k
= ISADMA_GET_CLASS(fdctrl
->dma
);
1787 cur_drv
= get_cur_drv(fdctrl
);
1788 if (fdctrl
->data_dir
== FD_DIR_SCANE
|| fdctrl
->data_dir
== FD_DIR_SCANL
||
1789 fdctrl
->data_dir
== FD_DIR_SCANH
)
1790 status2
= FD_SR2_SNS
;
1791 if (dma_len
> fdctrl
->data_len
)
1792 dma_len
= fdctrl
->data_len
;
1793 if (cur_drv
->blk
== NULL
) {
1794 if (fdctrl
->data_dir
== FD_DIR_WRITE
)
1795 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1797 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1799 goto transfer_error
;
1801 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1802 for (start_pos
= fdctrl
->data_pos
; fdctrl
->data_pos
< dma_len
;) {
1803 len
= dma_len
- fdctrl
->data_pos
;
1804 if (len
+ rel_pos
> FD_SECTOR_LEN
)
1805 len
= FD_SECTOR_LEN
- rel_pos
;
1806 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1807 "(%d-0x%08x 0x%08x)\n", len
, dma_len
, fdctrl
->data_pos
,
1808 fdctrl
->data_len
, GET_CUR_DRV(fdctrl
), cur_drv
->head
,
1809 cur_drv
->track
, cur_drv
->sect
, fd_sector(cur_drv
),
1810 fd_sector(cur_drv
) * FD_SECTOR_LEN
);
1811 if (fdctrl
->data_dir
!= FD_DIR_WRITE
||
1812 len
< FD_SECTOR_LEN
|| rel_pos
!= 0) {
1813 /* READ & SCAN commands and realign to a sector for WRITE */
1814 if (blk_pread(cur_drv
->blk
, fd_offset(cur_drv
),
1815 fdctrl
->fifo
, BDRV_SECTOR_SIZE
) < 0) {
1816 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1817 fd_sector(cur_drv
));
1818 /* Sure, image size is too small... */
1819 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1822 switch (fdctrl
->data_dir
) {
1825 k
->write_memory(fdctrl
->dma
, nchan
, fdctrl
->fifo
+ rel_pos
,
1826 fdctrl
->data_pos
, len
);
1829 /* WRITE commands */
1831 /* Handle readonly medium early, no need to do DMA, touch the
1832 * LED or attempt any writes. A real floppy doesn't attempt
1833 * to write to readonly media either. */
1834 fdctrl_stop_transfer(fdctrl
,
1835 FD_SR0_ABNTERM
| FD_SR0_SEEK
, FD_SR1_NW
,
1837 goto transfer_error
;
1840 k
->read_memory(fdctrl
->dma
, nchan
, fdctrl
->fifo
+ rel_pos
,
1841 fdctrl
->data_pos
, len
);
1842 if (blk_pwrite(cur_drv
->blk
, fd_offset(cur_drv
),
1843 fdctrl
->fifo
, BDRV_SECTOR_SIZE
, 0) < 0) {
1844 FLOPPY_DPRINTF("error writing sector %d\n",
1845 fd_sector(cur_drv
));
1846 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1847 goto transfer_error
;
1851 /* VERIFY commands */
1856 uint8_t tmpbuf
[FD_SECTOR_LEN
];
1858 k
->read_memory(fdctrl
->dma
, nchan
, tmpbuf
, fdctrl
->data_pos
,
1860 ret
= memcmp(tmpbuf
, fdctrl
->fifo
+ rel_pos
, len
);
1862 status2
= FD_SR2_SEH
;
1865 if ((ret
< 0 && fdctrl
->data_dir
== FD_DIR_SCANL
) ||
1866 (ret
> 0 && fdctrl
->data_dir
== FD_DIR_SCANH
)) {
1873 fdctrl
->data_pos
+= len
;
1874 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1876 /* Seek to next sector */
1877 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
))
1882 len
= fdctrl
->data_pos
- start_pos
;
1883 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1884 fdctrl
->data_pos
, len
, fdctrl
->data_len
);
1885 if (fdctrl
->data_dir
== FD_DIR_SCANE
||
1886 fdctrl
->data_dir
== FD_DIR_SCANL
||
1887 fdctrl
->data_dir
== FD_DIR_SCANH
)
1888 status2
= FD_SR2_SEH
;
1889 fdctrl
->data_len
-= len
;
1890 fdctrl_stop_transfer(fdctrl
, status0
, status1
, status2
);
1896 /* Data register : 0x05 */
1897 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
)
1900 uint32_t retval
= 0;
1903 cur_drv
= get_cur_drv(fdctrl
);
1904 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1905 if (!(fdctrl
->msr
& FD_MSR_RQM
) || !(fdctrl
->msr
& FD_MSR_DIO
)) {
1906 FLOPPY_DPRINTF("error: controller not ready for reading\n");
1910 /* If data_len spans multiple sectors, the current position in the FIFO
1911 * wraps around while fdctrl->data_pos is the real position in the whole
1913 pos
= fdctrl
->data_pos
;
1914 pos
%= FD_SECTOR_LEN
;
1916 switch (fdctrl
->phase
) {
1917 case FD_PHASE_EXECUTION
:
1918 assert(fdctrl
->msr
& FD_MSR_NONDMA
);
1920 if (fdctrl
->data_pos
!= 0)
1921 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1922 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1923 fd_sector(cur_drv
));
1926 if (blk_pread(cur_drv
->blk
, fd_offset(cur_drv
), fdctrl
->fifo
,
1929 FLOPPY_DPRINTF("error getting sector %d\n",
1930 fd_sector(cur_drv
));
1931 /* Sure, image size is too small... */
1932 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1936 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1937 fdctrl
->msr
&= ~FD_MSR_RQM
;
1938 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1942 case FD_PHASE_RESULT
:
1943 assert(!(fdctrl
->msr
& FD_MSR_NONDMA
));
1944 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1945 fdctrl
->msr
&= ~FD_MSR_RQM
;
1946 fdctrl_to_command_phase(fdctrl
);
1947 fdctrl_reset_irq(fdctrl
);
1951 case FD_PHASE_COMMAND
:
1956 retval
= fdctrl
->fifo
[pos
];
1957 FLOPPY_DPRINTF("data register: 0x%02x\n", retval
);
1962 static void fdctrl_format_sector(FDCtrl
*fdctrl
)
1967 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1968 cur_drv
= get_cur_drv(fdctrl
);
1969 kt
= fdctrl
->fifo
[6];
1970 kh
= fdctrl
->fifo
[7];
1971 ks
= fdctrl
->fifo
[8];
1972 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1973 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1974 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1975 NUM_SIDES(cur_drv
)));
1976 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1979 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1980 fdctrl
->fifo
[3] = kt
;
1981 fdctrl
->fifo
[4] = kh
;
1982 fdctrl
->fifo
[5] = ks
;
1986 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1987 fdctrl
->fifo
[3] = kt
;
1988 fdctrl
->fifo
[4] = kh
;
1989 fdctrl
->fifo
[5] = ks
;
1992 /* No seek enabled */
1993 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1994 fdctrl
->fifo
[3] = kt
;
1995 fdctrl
->fifo
[4] = kh
;
1996 fdctrl
->fifo
[5] = ks
;
1999 fdctrl
->status0
|= FD_SR0_SEEK
;
2004 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
2005 if (cur_drv
->blk
== NULL
||
2006 blk_pwrite(cur_drv
->blk
, fd_offset(cur_drv
), fdctrl
->fifo
,
2007 BDRV_SECTOR_SIZE
, 0) < 0) {
2008 FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv
));
2009 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
2011 if (cur_drv
->sect
== cur_drv
->last_sect
) {
2012 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
2013 /* Last sector done */
2014 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2017 fdctrl
->data_pos
= 0;
2018 fdctrl
->data_len
= 4;
2023 static void fdctrl_handle_lock(FDCtrl
*fdctrl
, int direction
)
2025 fdctrl
->lock
= (fdctrl
->fifo
[0] & 0x80) ? 1 : 0;
2026 fdctrl
->fifo
[0] = fdctrl
->lock
<< 4;
2027 fdctrl_to_result_phase(fdctrl
, 1);
2030 static void fdctrl_handle_dumpreg(FDCtrl
*fdctrl
, int direction
)
2032 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2034 /* Drives position */
2035 fdctrl
->fifo
[0] = drv0(fdctrl
)->track
;
2036 fdctrl
->fifo
[1] = drv1(fdctrl
)->track
;
2038 fdctrl
->fifo
[2] = drv2(fdctrl
)->track
;
2039 fdctrl
->fifo
[3] = drv3(fdctrl
)->track
;
2041 fdctrl
->fifo
[2] = 0;
2042 fdctrl
->fifo
[3] = 0;
2045 fdctrl
->fifo
[4] = fdctrl
->timer0
;
2046 fdctrl
->fifo
[5] = (fdctrl
->timer1
<< 1) | (fdctrl
->dor
& FD_DOR_DMAEN
? 1 : 0);
2047 fdctrl
->fifo
[6] = cur_drv
->last_sect
;
2048 fdctrl
->fifo
[7] = (fdctrl
->lock
<< 7) |
2049 (cur_drv
->perpendicular
<< 2);
2050 fdctrl
->fifo
[8] = fdctrl
->config
;
2051 fdctrl
->fifo
[9] = fdctrl
->precomp_trk
;
2052 fdctrl_to_result_phase(fdctrl
, 10);
2055 static void fdctrl_handle_version(FDCtrl
*fdctrl
, int direction
)
2057 /* Controller's version */
2058 fdctrl
->fifo
[0] = fdctrl
->version
;
2059 fdctrl_to_result_phase(fdctrl
, 1);
2062 static void fdctrl_handle_partid(FDCtrl
*fdctrl
, int direction
)
2064 fdctrl
->fifo
[0] = 0x41; /* Stepping 1 */
2065 fdctrl_to_result_phase(fdctrl
, 1);
2068 static void fdctrl_handle_restore(FDCtrl
*fdctrl
, int direction
)
2070 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2072 /* Drives position */
2073 drv0(fdctrl
)->track
= fdctrl
->fifo
[3];
2074 drv1(fdctrl
)->track
= fdctrl
->fifo
[4];
2076 drv2(fdctrl
)->track
= fdctrl
->fifo
[5];
2077 drv3(fdctrl
)->track
= fdctrl
->fifo
[6];
2080 fdctrl
->timer0
= fdctrl
->fifo
[7];
2081 fdctrl
->timer1
= fdctrl
->fifo
[8];
2082 cur_drv
->last_sect
= fdctrl
->fifo
[9];
2083 fdctrl
->lock
= fdctrl
->fifo
[10] >> 7;
2084 cur_drv
->perpendicular
= (fdctrl
->fifo
[10] >> 2) & 0xF;
2085 fdctrl
->config
= fdctrl
->fifo
[11];
2086 fdctrl
->precomp_trk
= fdctrl
->fifo
[12];
2087 fdctrl
->pwrd
= fdctrl
->fifo
[13];
2088 fdctrl_to_command_phase(fdctrl
);
2091 static void fdctrl_handle_save(FDCtrl
*fdctrl
, int direction
)
2093 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2095 fdctrl
->fifo
[0] = 0;
2096 fdctrl
->fifo
[1] = 0;
2097 /* Drives position */
2098 fdctrl
->fifo
[2] = drv0(fdctrl
)->track
;
2099 fdctrl
->fifo
[3] = drv1(fdctrl
)->track
;
2101 fdctrl
->fifo
[4] = drv2(fdctrl
)->track
;
2102 fdctrl
->fifo
[5] = drv3(fdctrl
)->track
;
2104 fdctrl
->fifo
[4] = 0;
2105 fdctrl
->fifo
[5] = 0;
2108 fdctrl
->fifo
[6] = fdctrl
->timer0
;
2109 fdctrl
->fifo
[7] = fdctrl
->timer1
;
2110 fdctrl
->fifo
[8] = cur_drv
->last_sect
;
2111 fdctrl
->fifo
[9] = (fdctrl
->lock
<< 7) |
2112 (cur_drv
->perpendicular
<< 2);
2113 fdctrl
->fifo
[10] = fdctrl
->config
;
2114 fdctrl
->fifo
[11] = fdctrl
->precomp_trk
;
2115 fdctrl
->fifo
[12] = fdctrl
->pwrd
;
2116 fdctrl
->fifo
[13] = 0;
2117 fdctrl
->fifo
[14] = 0;
2118 fdctrl_to_result_phase(fdctrl
, 15);
2121 static void fdctrl_handle_readid(FDCtrl
*fdctrl
, int direction
)
2123 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2125 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
2126 timer_mod(fdctrl
->result_timer
, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) +
2127 (NANOSECONDS_PER_SECOND
/ 50));
2130 static void fdctrl_handle_format_track(FDCtrl
*fdctrl
, int direction
)
2134 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2135 cur_drv
= get_cur_drv(fdctrl
);
2136 fdctrl
->data_state
|= FD_STATE_FORMAT
;
2137 if (fdctrl
->fifo
[0] & 0x80)
2138 fdctrl
->data_state
|= FD_STATE_MULTI
;
2140 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
2142 fdctrl
->fifo
[2] > 7 ? 16384 : 128 << fdctrl
->fifo
[2];
2144 cur_drv
->last_sect
=
2145 cur_drv
->flags
& FDISK_DBL_SIDES
? fdctrl
->fifo
[3] :
2146 fdctrl
->fifo
[3] / 2;
2148 cur_drv
->last_sect
= fdctrl
->fifo
[3];
2150 /* TODO: implement format using DMA expected by the Bochs BIOS
2151 * and Linux fdformat (read 3 bytes per sector via DMA and fill
2152 * the sector with the specified fill byte
2154 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
2155 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2158 static void fdctrl_handle_specify(FDCtrl
*fdctrl
, int direction
)
2160 fdctrl
->timer0
= (fdctrl
->fifo
[1] >> 4) & 0xF;
2161 fdctrl
->timer1
= fdctrl
->fifo
[2] >> 1;
2162 if (fdctrl
->fifo
[2] & 1)
2163 fdctrl
->dor
&= ~FD_DOR_DMAEN
;
2165 fdctrl
->dor
|= FD_DOR_DMAEN
;
2166 /* No result back */
2167 fdctrl_to_command_phase(fdctrl
);
2170 static void fdctrl_handle_sense_drive_status(FDCtrl
*fdctrl
, int direction
)
2174 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2175 cur_drv
= get_cur_drv(fdctrl
);
2176 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
2177 /* 1 Byte status back */
2178 fdctrl
->fifo
[0] = (cur_drv
->ro
<< 6) |
2179 (cur_drv
->track
== 0 ? 0x10 : 0x00) |
2180 (cur_drv
->head
<< 2) |
2181 GET_CUR_DRV(fdctrl
) |
2183 fdctrl_to_result_phase(fdctrl
, 1);
2186 static void fdctrl_handle_recalibrate(FDCtrl
*fdctrl
, int direction
)
2190 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2191 cur_drv
= get_cur_drv(fdctrl
);
2192 fd_recalibrate(cur_drv
);
2193 fdctrl_to_command_phase(fdctrl
);
2194 /* Raise Interrupt */
2195 fdctrl
->status0
|= FD_SR0_SEEK
;
2196 fdctrl_raise_irq(fdctrl
);
2199 static void fdctrl_handle_sense_interrupt_status(FDCtrl
*fdctrl
, int direction
)
2201 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2203 if (fdctrl
->reset_sensei
> 0) {
2205 FD_SR0_RDYCHG
+ FD_RESET_SENSEI_COUNT
- fdctrl
->reset_sensei
;
2206 fdctrl
->reset_sensei
--;
2207 } else if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
2208 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
2209 fdctrl_to_result_phase(fdctrl
, 1);
2213 (fdctrl
->status0
& ~(FD_SR0_HEAD
| FD_SR0_DS1
| FD_SR0_DS0
))
2214 | GET_CUR_DRV(fdctrl
);
2217 fdctrl
->fifo
[1] = cur_drv
->track
;
2218 fdctrl_to_result_phase(fdctrl
, 2);
2219 fdctrl_reset_irq(fdctrl
);
2220 fdctrl
->status0
= FD_SR0_RDYCHG
;
2223 static void fdctrl_handle_seek(FDCtrl
*fdctrl
, int direction
)
2227 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2228 cur_drv
= get_cur_drv(fdctrl
);
2229 fdctrl_to_command_phase(fdctrl
);
2230 /* The seek command just sends step pulses to the drive and doesn't care if
2231 * there is a medium inserted of if it's banging the head against the drive.
2233 fd_seek(cur_drv
, cur_drv
->head
, fdctrl
->fifo
[2], cur_drv
->sect
, 1);
2234 /* Raise Interrupt */
2235 fdctrl
->status0
|= FD_SR0_SEEK
;
2236 fdctrl_raise_irq(fdctrl
);
2239 static void fdctrl_handle_perpendicular_mode(FDCtrl
*fdctrl
, int direction
)
2241 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2243 if (fdctrl
->fifo
[1] & 0x80)
2244 cur_drv
->perpendicular
= fdctrl
->fifo
[1] & 0x7;
2245 /* No result back */
2246 fdctrl_to_command_phase(fdctrl
);
2249 static void fdctrl_handle_configure(FDCtrl
*fdctrl
, int direction
)
2251 fdctrl
->config
= fdctrl
->fifo
[2];
2252 fdctrl
->precomp_trk
= fdctrl
->fifo
[3];
2253 /* No result back */
2254 fdctrl_to_command_phase(fdctrl
);
2257 static void fdctrl_handle_powerdown_mode(FDCtrl
*fdctrl
, int direction
)
2259 fdctrl
->pwrd
= fdctrl
->fifo
[1];
2260 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
2261 fdctrl_to_result_phase(fdctrl
, 1);
2264 static void fdctrl_handle_option(FDCtrl
*fdctrl
, int direction
)
2266 /* No result back */
2267 fdctrl_to_command_phase(fdctrl
);
2270 static void fdctrl_handle_drive_specification_command(FDCtrl
*fdctrl
, int direction
)
2272 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2275 pos
= fdctrl
->data_pos
- 1;
2276 pos
%= FD_SECTOR_LEN
;
2277 if (fdctrl
->fifo
[pos
] & 0x80) {
2278 /* Command parameters done */
2279 if (fdctrl
->fifo
[pos
] & 0x40) {
2280 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
2281 fdctrl
->fifo
[2] = 0;
2282 fdctrl
->fifo
[3] = 0;
2283 fdctrl_to_result_phase(fdctrl
, 4);
2285 fdctrl_to_command_phase(fdctrl
);
2287 } else if (fdctrl
->data_len
> 7) {
2289 fdctrl
->fifo
[0] = 0x80 |
2290 (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
2291 fdctrl_to_result_phase(fdctrl
, 1);
2295 static void fdctrl_handle_relative_seek_in(FDCtrl
*fdctrl
, int direction
)
2299 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2300 cur_drv
= get_cur_drv(fdctrl
);
2301 if (fdctrl
->fifo
[2] + cur_drv
->track
>= cur_drv
->max_track
) {
2302 fd_seek(cur_drv
, cur_drv
->head
, cur_drv
->max_track
- 1,
2305 fd_seek(cur_drv
, cur_drv
->head
,
2306 cur_drv
->track
+ fdctrl
->fifo
[2], cur_drv
->sect
, 1);
2308 fdctrl_to_command_phase(fdctrl
);
2309 /* Raise Interrupt */
2310 fdctrl
->status0
|= FD_SR0_SEEK
;
2311 fdctrl_raise_irq(fdctrl
);
2314 static void fdctrl_handle_relative_seek_out(FDCtrl
*fdctrl
, int direction
)
2318 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
2319 cur_drv
= get_cur_drv(fdctrl
);
2320 if (fdctrl
->fifo
[2] > cur_drv
->track
) {
2321 fd_seek(cur_drv
, cur_drv
->head
, 0, cur_drv
->sect
, 1);
2323 fd_seek(cur_drv
, cur_drv
->head
,
2324 cur_drv
->track
- fdctrl
->fifo
[2], cur_drv
->sect
, 1);
2326 fdctrl_to_command_phase(fdctrl
);
2327 /* Raise Interrupt */
2328 fdctrl
->status0
|= FD_SR0_SEEK
;
2329 fdctrl_raise_irq(fdctrl
);
2333 * Handlers for the execution phase of each command
2335 typedef struct FDCtrlCommand
{
2340 void (*handler
)(FDCtrl
*fdctrl
, int direction
);
2344 static const FDCtrlCommand handlers
[] = {
2345 { FD_CMD_READ
, 0x1f, "READ", 8, fdctrl_start_transfer
, FD_DIR_READ
},
2346 { FD_CMD_WRITE
, 0x3f, "WRITE", 8, fdctrl_start_transfer
, FD_DIR_WRITE
},
2347 { FD_CMD_SEEK
, 0xff, "SEEK", 2, fdctrl_handle_seek
},
2348 { FD_CMD_SENSE_INTERRUPT_STATUS
, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status
},
2349 { FD_CMD_RECALIBRATE
, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate
},
2350 { FD_CMD_FORMAT_TRACK
, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track
},
2351 { FD_CMD_READ_TRACK
, 0xbf, "READ TRACK", 8, fdctrl_start_transfer
, FD_DIR_READ
},
2352 { FD_CMD_RESTORE
, 0xff, "RESTORE", 17, fdctrl_handle_restore
}, /* part of READ DELETED DATA */
2353 { FD_CMD_SAVE
, 0xff, "SAVE", 0, fdctrl_handle_save
}, /* part of READ DELETED DATA */
2354 { FD_CMD_READ_DELETED
, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_READ
},
2355 { FD_CMD_SCAN_EQUAL
, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANE
},
2356 { FD_CMD_VERIFY
, 0x1f, "VERIFY", 8, fdctrl_start_transfer
, FD_DIR_VERIFY
},
2357 { FD_CMD_SCAN_LOW_OR_EQUAL
, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANL
},
2358 { FD_CMD_SCAN_HIGH_OR_EQUAL
, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANH
},
2359 { FD_CMD_WRITE_DELETED
, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_WRITE
},
2360 { FD_CMD_READ_ID
, 0xbf, "READ ID", 1, fdctrl_handle_readid
},
2361 { FD_CMD_SPECIFY
, 0xff, "SPECIFY", 2, fdctrl_handle_specify
},
2362 { FD_CMD_SENSE_DRIVE_STATUS
, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status
},
2363 { FD_CMD_PERPENDICULAR_MODE
, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode
},
2364 { FD_CMD_CONFIGURE
, 0xff, "CONFIGURE", 3, fdctrl_handle_configure
},
2365 { FD_CMD_POWERDOWN_MODE
, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode
},
2366 { FD_CMD_OPTION
, 0xff, "OPTION", 1, fdctrl_handle_option
},
2367 { FD_CMD_DRIVE_SPECIFICATION_COMMAND
, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command
},
2368 { FD_CMD_RELATIVE_SEEK_OUT
, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out
},
2369 { FD_CMD_FORMAT_AND_WRITE
, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented
},
2370 { FD_CMD_RELATIVE_SEEK_IN
, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in
},
2371 { FD_CMD_LOCK
, 0x7f, "LOCK", 0, fdctrl_handle_lock
},
2372 { FD_CMD_DUMPREG
, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg
},
2373 { FD_CMD_VERSION
, 0xff, "VERSION", 0, fdctrl_handle_version
},
2374 { FD_CMD_PART_ID
, 0xff, "PART ID", 0, fdctrl_handle_partid
},
2375 { FD_CMD_WRITE
, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer
, FD_DIR_WRITE
}, /* not in specification ; BeOS 4.5 bug */
2376 { 0, 0, "unknown", 0, fdctrl_unimplemented
}, /* default handler */
2378 /* Associate command to an index in the 'handlers' array */
2379 static uint8_t command_to_handler
[256];
2381 static const FDCtrlCommand
*get_command(uint8_t cmd
)
2385 idx
= command_to_handler
[cmd
];
2386 FLOPPY_DPRINTF("%s command\n", handlers
[idx
].name
);
2387 return &handlers
[idx
];
2390 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
)
2393 const FDCtrlCommand
*cmd
;
2397 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
2398 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
2401 if (!(fdctrl
->msr
& FD_MSR_RQM
) || (fdctrl
->msr
& FD_MSR_DIO
)) {
2402 FLOPPY_DPRINTF("error: controller not ready for writing\n");
2405 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
2407 FLOPPY_DPRINTF("%s: %02x\n", __func__
, value
);
2409 /* If data_len spans multiple sectors, the current position in the FIFO
2410 * wraps around while fdctrl->data_pos is the real position in the whole
2412 pos
= fdctrl
->data_pos
++;
2413 pos
%= FD_SECTOR_LEN
;
2414 fdctrl
->fifo
[pos
] = value
;
2416 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
2417 fdctrl
->msr
&= ~FD_MSR_RQM
;
2420 switch (fdctrl
->phase
) {
2421 case FD_PHASE_EXECUTION
:
2422 /* For DMA requests, RQM should be cleared during execution phase, so
2423 * we would have errored out above. */
2424 assert(fdctrl
->msr
& FD_MSR_NONDMA
);
2426 /* FIFO data write */
2427 if (pos
== FD_SECTOR_LEN
- 1 ||
2428 fdctrl
->data_pos
== fdctrl
->data_len
) {
2429 cur_drv
= get_cur_drv(fdctrl
);
2430 if (blk_pwrite(cur_drv
->blk
, fd_offset(cur_drv
), fdctrl
->fifo
,
2431 BDRV_SECTOR_SIZE
, 0) < 0) {
2432 FLOPPY_DPRINTF("error writing sector %d\n",
2433 fd_sector(cur_drv
));
2436 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
2437 FLOPPY_DPRINTF("error seeking to next sector %d\n",
2438 fd_sector(cur_drv
));
2443 /* Switch to result phase when done with the transfer */
2444 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
2445 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2449 case FD_PHASE_COMMAND
:
2450 assert(!(fdctrl
->msr
& FD_MSR_NONDMA
));
2451 assert(fdctrl
->data_pos
< FD_SECTOR_LEN
);
2454 /* The first byte specifies the command. Now we start reading
2455 * as many parameters as this command requires. */
2456 cmd
= get_command(value
);
2457 fdctrl
->data_len
= cmd
->parameters
+ 1;
2458 if (cmd
->parameters
) {
2459 fdctrl
->msr
|= FD_MSR_RQM
;
2461 fdctrl
->msr
|= FD_MSR_CMDBUSY
;
2464 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
2465 /* We have all parameters now, execute the command */
2466 fdctrl
->phase
= FD_PHASE_EXECUTION
;
2468 if (fdctrl
->data_state
& FD_STATE_FORMAT
) {
2469 fdctrl_format_sector(fdctrl
);
2473 cmd
= get_command(fdctrl
->fifo
[0]);
2474 FLOPPY_DPRINTF("Calling handler for '%s'\n", cmd
->name
);
2475 cmd
->handler(fdctrl
, cmd
->direction
);
2479 case FD_PHASE_RESULT
:
2485 static void fdctrl_result_timer(void *opaque
)
2487 FDCtrl
*fdctrl
= opaque
;
2488 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2490 /* Pretend we are spinning.
2491 * This is needed for Coherent, which uses READ ID to check for
2492 * sector interleaving.
2494 if (cur_drv
->last_sect
!= 0) {
2495 cur_drv
->sect
= (cur_drv
->sect
% cur_drv
->last_sect
) + 1;
2497 /* READ_ID can't automatically succeed! */
2498 if (fdctrl
->check_media_rate
&&
2499 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
2500 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
2501 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
2502 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
2504 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2508 /* Init functions */
2510 static void fdctrl_init_drives(FloppyBus
*bus
, DriveInfo
**fds
)
2515 for (i
= 0; i
< MAX_FD
; i
++) {
2517 dev
= qdev_new("floppy");
2518 qdev_prop_set_uint32(dev
, "unit", i
);
2519 qdev_prop_set_enum(dev
, "drive-type", FLOPPY_DRIVE_TYPE_AUTO
);
2520 qdev_prop_set_drive_err(dev
, "drive", blk_by_legacy_dinfo(fds
[i
]),
2522 qdev_realize_and_unref(dev
, &bus
->bus
, &error_fatal
);
2527 void isa_fdc_init_drives(ISADevice
*fdc
, DriveInfo
**fds
)
2529 fdctrl_init_drives(&ISA_FDC(fdc
)->state
.bus
, fds
);
2532 static void fdctrl_connect_drives(FDCtrl
*fdctrl
, DeviceState
*fdc_dev
,
2540 const char *fdc_name
, *drive_suffix
;
2542 for (i
= 0; i
< MAX_FD
; i
++) {
2543 drive
= &fdctrl
->drives
[i
];
2544 drive
->fdctrl
= fdctrl
;
2546 /* If the drive is not present, we skip creating the qdev device, but
2547 * still have to initialise the controller. */
2548 blk
= fdctrl
->qdev_for_drives
[i
].blk
;
2551 fd_revalidate(drive
);
2555 fdc_name
= object_get_typename(OBJECT(fdc_dev
));
2556 drive_suffix
= !strcmp(fdc_name
, "SUNW,fdtwo") ? "" : i
? "B" : "A";
2557 warn_report("warning: property %s.drive%s is deprecated",
2558 fdc_name
, drive_suffix
);
2559 error_printf("Use -device floppy,unit=%d,drive=... instead.\n", i
);
2561 dev
= qdev_new("floppy");
2562 qdev_prop_set_uint32(dev
, "unit", i
);
2563 qdev_prop_set_enum(dev
, "drive-type", fdctrl
->qdev_for_drives
[i
].type
);
2566 * Hack alert: we move the backend from the floppy controller
2567 * device to the floppy device. We first need to detach the
2568 * controller, or else floppy_create()'s qdev_prop_set_drive()
2569 * will die when it attaches floppy device. We also need to
2570 * take another reference so that blk_detach_dev() doesn't
2571 * free blk while we still need it.
2573 * The hack is probably a bad idea.
2576 blk_detach_dev(blk
, fdc_dev
);
2577 fdctrl
->qdev_for_drives
[i
].blk
= NULL
;
2578 ok
= qdev_prop_set_drive_err(dev
, "drive", blk
, errp
);
2584 if (!qdev_realize_and_unref(dev
, &fdctrl
->bus
.bus
, errp
)) {
2590 void fdctrl_init_sysbus(qemu_irq irq
, int dma_chann
,
2591 hwaddr mmio_base
, DriveInfo
**fds
)
2598 dev
= qdev_new("sysbus-fdc");
2599 sys
= SYSBUS_FDC(dev
);
2600 fdctrl
= &sys
->state
;
2601 fdctrl
->dma_chann
= dma_chann
; /* FIXME */
2602 sbd
= SYS_BUS_DEVICE(dev
);
2603 sysbus_realize_and_unref(sbd
, &error_fatal
);
2604 sysbus_connect_irq(sbd
, 0, irq
);
2605 sysbus_mmio_map(sbd
, 0, mmio_base
);
2607 fdctrl_init_drives(&sys
->state
.bus
, fds
);
2610 void sun4m_fdctrl_init(qemu_irq irq
, hwaddr io_base
,
2611 DriveInfo
**fds
, qemu_irq
*fdc_tc
)
2616 dev
= qdev_new("SUNW,fdtwo");
2617 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev
), &error_fatal
);
2618 sys
= SYSBUS_FDC(dev
);
2619 sysbus_connect_irq(SYS_BUS_DEVICE(sys
), 0, irq
);
2620 sysbus_mmio_map(SYS_BUS_DEVICE(sys
), 0, io_base
);
2621 *fdc_tc
= qdev_get_gpio_in(dev
, 0);
2623 fdctrl_init_drives(&sys
->state
.bus
, fds
);
2626 static void fdctrl_realize_common(DeviceState
*dev
, FDCtrl
*fdctrl
,
2630 static int command_tables_inited
= 0;
2632 if (fdctrl
->fallback
== FLOPPY_DRIVE_TYPE_AUTO
) {
2633 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 static void isa_fdc_get_drive_max_chs(FloppyDriveType type
, uint8_t *maxc
,
2762 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 Aml
*build_fdinfo_aml(int idx
, FloppyDriveType type
)
2787 uint8_t maxc
, maxh
, maxs
;
2789 isa_fdc_get_drive_max_chs(type
, &maxc
, &maxh
, &maxs
);
2791 dev
= aml_device("FLP%c", 'A' + idx
);
2793 aml_append(dev
, aml_name_decl("_ADR", aml_int(idx
)));
2795 fdi
= aml_package(16);
2796 aml_append(fdi
, aml_int(idx
)); /* Drive Number */
2798 aml_int(cmos_get_fd_drive_type(type
))); /* Device Type */
2800 * the values below are the limits of the drive, and are thus independent
2801 * of the inserted media
2803 aml_append(fdi
, aml_int(maxc
)); /* Maximum Cylinder Number */
2804 aml_append(fdi
, aml_int(maxs
)); /* Maximum Sector Number */
2805 aml_append(fdi
, aml_int(maxh
)); /* Maximum Head Number */
2807 * SeaBIOS returns the below values for int 0x13 func 0x08 regardless of
2808 * the drive type, so shall we
2810 aml_append(fdi
, aml_int(0xAF)); /* disk_specify_1 */
2811 aml_append(fdi
, aml_int(0x02)); /* disk_specify_2 */
2812 aml_append(fdi
, aml_int(0x25)); /* disk_motor_wait */
2813 aml_append(fdi
, aml_int(0x02)); /* disk_sector_siz */
2814 aml_append(fdi
, aml_int(0x12)); /* disk_eot */
2815 aml_append(fdi
, aml_int(0x1B)); /* disk_rw_gap */
2816 aml_append(fdi
, aml_int(0xFF)); /* disk_dtl */
2817 aml_append(fdi
, aml_int(0x6C)); /* disk_formt_gap */
2818 aml_append(fdi
, aml_int(0xF6)); /* disk_fill */
2819 aml_append(fdi
, aml_int(0x0F)); /* disk_head_sttl */
2820 aml_append(fdi
, aml_int(0x08)); /* disk_motor_strt */
2822 aml_append(dev
, aml_name_decl("_FDI", fdi
));
2826 int cmos_get_fd_drive_type(FloppyDriveType fd0
)
2831 case FLOPPY_DRIVE_TYPE_144
:
2832 /* 1.44 Mb 3"5 drive */
2835 case FLOPPY_DRIVE_TYPE_288
:
2836 /* 2.88 Mb 3"5 drive */
2839 case FLOPPY_DRIVE_TYPE_120
:
2840 /* 1.2 Mb 5"5 drive */
2843 case FLOPPY_DRIVE_TYPE_NONE
:
2851 static void fdc_isa_build_aml(ISADevice
*isadev
, Aml
*scope
)
2857 #define ACPI_FDE_MAX_FD 4
2858 uint32_t fde_buf
[5] = {
2859 0, 0, 0, 0, /* presence of floppy drives #0 - #3 */
2860 cpu_to_le32(2) /* tape presence (2 == never present) */
2863 crs
= aml_resource_template();
2864 aml_append(crs
, aml_io(AML_DECODE16
, 0x03F2, 0x03F2, 0x00, 0x04));
2865 aml_append(crs
, aml_io(AML_DECODE16
, 0x03F7, 0x03F7, 0x00, 0x01));
2866 aml_append(crs
, aml_irq_no_flags(6));
2868 aml_dma(AML_COMPATIBILITY
, AML_NOTBUSMASTER
, AML_TRANSFER8
, 2));
2870 dev
= aml_device("FDC0");
2871 aml_append(dev
, aml_name_decl("_HID", aml_eisaid("PNP0700")));
2872 aml_append(dev
, aml_name_decl("_CRS", crs
));
2874 for (i
= 0; i
< MIN(MAX_FD
, ACPI_FDE_MAX_FD
); i
++) {
2875 FloppyDriveType type
= isa_fdc_get_drive_type(isadev
, i
);
2877 if (type
< FLOPPY_DRIVE_TYPE_NONE
) {
2878 fde_buf
[i
] = cpu_to_le32(1); /* drive present */
2879 aml_append(dev
, build_fdinfo_aml(i
, type
));
2882 aml_append(dev
, aml_name_decl("_FDE",
2883 aml_buffer(sizeof(fde_buf
), (uint8_t *)fde_buf
)));
2885 aml_append(scope
, dev
);
2888 static const VMStateDescription vmstate_isa_fdc
={
2891 .minimum_version_id
= 2,
2892 .fields
= (VMStateField
[]) {
2893 VMSTATE_STRUCT(state
, FDCtrlISABus
, 0, vmstate_fdc
, FDCtrl
),
2894 VMSTATE_END_OF_LIST()
2898 static Property isa_fdc_properties
[] = {
2899 DEFINE_PROP_UINT32("iobase", FDCtrlISABus
, iobase
, 0x3f0),
2900 DEFINE_PROP_UINT32("irq", FDCtrlISABus
, irq
, 6),
2901 DEFINE_PROP_UINT32("dma", FDCtrlISABus
, dma
, 2),
2902 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus
, state
.qdev_for_drives
[0].blk
),
2903 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus
, state
.qdev_for_drives
[1].blk
),
2904 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus
, state
.check_media_rate
,
2906 DEFINE_PROP_SIGNED("fdtypeA", FDCtrlISABus
, state
.qdev_for_drives
[0].type
,
2907 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2909 DEFINE_PROP_SIGNED("fdtypeB", FDCtrlISABus
, state
.qdev_for_drives
[1].type
,
2910 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2912 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus
, state
.fallback
,
2913 FLOPPY_DRIVE_TYPE_288
, qdev_prop_fdc_drive_type
,
2915 DEFINE_PROP_END_OF_LIST(),
2918 static void isabus_fdc_class_init(ObjectClass
*klass
, void *data
)
2920 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2921 ISADeviceClass
*isa
= ISA_DEVICE_CLASS(klass
);
2923 dc
->realize
= isabus_fdc_realize
;
2924 dc
->fw_name
= "fdc";
2925 dc
->reset
= fdctrl_external_reset_isa
;
2926 dc
->vmsd
= &vmstate_isa_fdc
;
2927 isa
->build_aml
= fdc_isa_build_aml
;
2928 device_class_set_props(dc
, isa_fdc_properties
);
2929 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
2932 static void isabus_fdc_instance_init(Object
*obj
)
2934 FDCtrlISABus
*isa
= ISA_FDC(obj
);
2936 device_add_bootindex_property(obj
, &isa
->bootindexA
,
2937 "bootindexA", "/floppy@0",
2939 device_add_bootindex_property(obj
, &isa
->bootindexB
,
2940 "bootindexB", "/floppy@1",
2944 static const TypeInfo isa_fdc_info
= {
2945 .name
= TYPE_ISA_FDC
,
2946 .parent
= TYPE_ISA_DEVICE
,
2947 .instance_size
= sizeof(FDCtrlISABus
),
2948 .class_init
= isabus_fdc_class_init
,
2949 .instance_init
= isabus_fdc_instance_init
,
2952 static const VMStateDescription vmstate_sysbus_fdc
={
2955 .minimum_version_id
= 2,
2956 .fields
= (VMStateField
[]) {
2957 VMSTATE_STRUCT(state
, FDCtrlSysBus
, 0, vmstate_fdc
, FDCtrl
),
2958 VMSTATE_END_OF_LIST()
2962 static Property sysbus_fdc_properties
[] = {
2963 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus
, state
.qdev_for_drives
[0].blk
),
2964 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus
, state
.qdev_for_drives
[1].blk
),
2965 DEFINE_PROP_SIGNED("fdtypeA", FDCtrlSysBus
, state
.qdev_for_drives
[0].type
,
2966 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2968 DEFINE_PROP_SIGNED("fdtypeB", FDCtrlSysBus
, state
.qdev_for_drives
[1].type
,
2969 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2971 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus
, state
.fallback
,
2972 FLOPPY_DRIVE_TYPE_144
, qdev_prop_fdc_drive_type
,
2974 DEFINE_PROP_END_OF_LIST(),
2977 static void sysbus_fdc_class_init(ObjectClass
*klass
, void *data
)
2979 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2981 device_class_set_props(dc
, sysbus_fdc_properties
);
2982 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
2985 static const TypeInfo sysbus_fdc_info
= {
2986 .name
= "sysbus-fdc",
2987 .parent
= TYPE_SYSBUS_FDC
,
2988 .instance_init
= sysbus_fdc_initfn
,
2989 .class_init
= sysbus_fdc_class_init
,
2992 static Property sun4m_fdc_properties
[] = {
2993 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus
, state
.qdev_for_drives
[0].blk
),
2994 DEFINE_PROP_SIGNED("fdtype", FDCtrlSysBus
, state
.qdev_for_drives
[0].type
,
2995 FLOPPY_DRIVE_TYPE_AUTO
, qdev_prop_fdc_drive_type
,
2997 DEFINE_PROP_SIGNED("fallback", FDCtrlISABus
, state
.fallback
,
2998 FLOPPY_DRIVE_TYPE_144
, qdev_prop_fdc_drive_type
,
3000 DEFINE_PROP_END_OF_LIST(),
3003 static void sun4m_fdc_class_init(ObjectClass
*klass
, void *data
)
3005 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3007 device_class_set_props(dc
, sun4m_fdc_properties
);
3008 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
3011 static const TypeInfo sun4m_fdc_info
= {
3012 .name
= "SUNW,fdtwo",
3013 .parent
= TYPE_SYSBUS_FDC
,
3014 .instance_init
= sun4m_fdc_initfn
,
3015 .class_init
= sun4m_fdc_class_init
,
3018 static void sysbus_fdc_common_class_init(ObjectClass
*klass
, void *data
)
3020 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3022 dc
->realize
= sysbus_fdc_common_realize
;
3023 dc
->reset
= fdctrl_external_reset_sysbus
;
3024 dc
->vmsd
= &vmstate_sysbus_fdc
;
3027 static const TypeInfo sysbus_fdc_type_info
= {
3028 .name
= TYPE_SYSBUS_FDC
,
3029 .parent
= TYPE_SYS_BUS_DEVICE
,
3030 .instance_size
= sizeof(FDCtrlSysBus
),
3031 .instance_init
= sysbus_fdc_common_initfn
,
3033 .class_init
= sysbus_fdc_common_class_init
,
3036 static void fdc_register_types(void)
3038 type_register_static(&isa_fdc_info
);
3039 type_register_static(&sysbus_fdc_type_info
);
3040 type_register_static(&sysbus_fdc_info
);
3041 type_register_static(&sun4m_fdc_info
);
3042 type_register_static(&floppy_bus_info
);
3043 type_register_static(&floppy_drive_info
);
3046 type_init(fdc_register_types
)