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.
32 #include "qemu-error.h"
33 #include "qemu-timer.h"
36 #include "qdev-addr.h"
41 /********************************************************/
42 /* debug Floppy devices */
43 //#define DEBUG_FLOPPY
46 #define FLOPPY_DPRINTF(fmt, ...) \
47 do { printf("FLOPPY: " fmt , ## __VA_ARGS__); } while (0)
49 #define FLOPPY_DPRINTF(fmt, ...)
52 /********************************************************/
53 /* Floppy drive emulation */
55 typedef enum FDriveRate
{
56 FDRIVE_RATE_500K
= 0x00, /* 500 Kbps */
57 FDRIVE_RATE_300K
= 0x01, /* 300 Kbps */
58 FDRIVE_RATE_250K
= 0x02, /* 250 Kbps */
59 FDRIVE_RATE_1M
= 0x03, /* 1 Mbps */
62 typedef struct FDFormat
{
70 static const FDFormat fd_formats
[] = {
71 /* First entry is default format */
72 /* 1.44 MB 3"1/2 floppy disks */
73 { FDRIVE_DRV_144
, 18, 80, 1, FDRIVE_RATE_500K
, },
74 { FDRIVE_DRV_144
, 20, 80, 1, FDRIVE_RATE_500K
, },
75 { FDRIVE_DRV_144
, 21, 80, 1, FDRIVE_RATE_500K
, },
76 { FDRIVE_DRV_144
, 21, 82, 1, FDRIVE_RATE_500K
, },
77 { FDRIVE_DRV_144
, 21, 83, 1, FDRIVE_RATE_500K
, },
78 { FDRIVE_DRV_144
, 22, 80, 1, FDRIVE_RATE_500K
, },
79 { FDRIVE_DRV_144
, 23, 80, 1, FDRIVE_RATE_500K
, },
80 { FDRIVE_DRV_144
, 24, 80, 1, FDRIVE_RATE_500K
, },
81 /* 2.88 MB 3"1/2 floppy disks */
82 { FDRIVE_DRV_288
, 36, 80, 1, FDRIVE_RATE_1M
, },
83 { FDRIVE_DRV_288
, 39, 80, 1, FDRIVE_RATE_1M
, },
84 { FDRIVE_DRV_288
, 40, 80, 1, FDRIVE_RATE_1M
, },
85 { FDRIVE_DRV_288
, 44, 80, 1, FDRIVE_RATE_1M
, },
86 { FDRIVE_DRV_288
, 48, 80, 1, FDRIVE_RATE_1M
, },
87 /* 720 kB 3"1/2 floppy disks */
88 { FDRIVE_DRV_144
, 9, 80, 1, FDRIVE_RATE_250K
, },
89 { FDRIVE_DRV_144
, 10, 80, 1, FDRIVE_RATE_250K
, },
90 { FDRIVE_DRV_144
, 10, 82, 1, FDRIVE_RATE_250K
, },
91 { FDRIVE_DRV_144
, 10, 83, 1, FDRIVE_RATE_250K
, },
92 { FDRIVE_DRV_144
, 13, 80, 1, FDRIVE_RATE_250K
, },
93 { FDRIVE_DRV_144
, 14, 80, 1, FDRIVE_RATE_250K
, },
94 /* 1.2 MB 5"1/4 floppy disks */
95 { FDRIVE_DRV_120
, 15, 80, 1, FDRIVE_RATE_500K
, },
96 { FDRIVE_DRV_120
, 18, 80, 1, FDRIVE_RATE_500K
, },
97 { FDRIVE_DRV_120
, 18, 82, 1, FDRIVE_RATE_500K
, },
98 { FDRIVE_DRV_120
, 18, 83, 1, FDRIVE_RATE_500K
, },
99 { FDRIVE_DRV_120
, 20, 80, 1, FDRIVE_RATE_500K
, },
100 /* 720 kB 5"1/4 floppy disks */
101 { FDRIVE_DRV_120
, 9, 80, 1, FDRIVE_RATE_250K
, },
102 { FDRIVE_DRV_120
, 11, 80, 1, FDRIVE_RATE_250K
, },
103 /* 360 kB 5"1/4 floppy disks */
104 { FDRIVE_DRV_120
, 9, 40, 1, FDRIVE_RATE_300K
, },
105 { FDRIVE_DRV_120
, 9, 40, 0, FDRIVE_RATE_300K
, },
106 { FDRIVE_DRV_120
, 10, 41, 1, FDRIVE_RATE_300K
, },
107 { FDRIVE_DRV_120
, 10, 42, 1, FDRIVE_RATE_300K
, },
108 /* 320 kB 5"1/4 floppy disks */
109 { FDRIVE_DRV_120
, 8, 40, 1, FDRIVE_RATE_250K
, },
110 { FDRIVE_DRV_120
, 8, 40, 0, FDRIVE_RATE_250K
, },
111 /* 360 kB must match 5"1/4 better than 3"1/2... */
112 { FDRIVE_DRV_144
, 9, 80, 0, FDRIVE_RATE_250K
, },
114 { FDRIVE_DRV_NONE
, -1, -1, 0, 0, },
117 static void pick_geometry(BlockDriverState
*bs
, int *nb_heads
,
118 int *max_track
, int *last_sect
,
119 FDriveType drive_in
, FDriveType
*drive
,
122 const FDFormat
*parse
;
123 uint64_t nb_sectors
, size
;
124 int i
, first_match
, match
;
126 bdrv_get_geometry(bs
, &nb_sectors
);
130 parse
= &fd_formats
[i
];
131 if (parse
->drive
== FDRIVE_DRV_NONE
) {
134 if (drive_in
== parse
->drive
||
135 drive_in
== FDRIVE_DRV_NONE
) {
136 size
= (parse
->max_head
+ 1) * parse
->max_track
*
138 if (nb_sectors
== size
) {
142 if (first_match
== -1) {
148 if (first_match
== -1) {
153 parse
= &fd_formats
[match
];
155 *nb_heads
= parse
->max_head
+ 1;
156 *max_track
= parse
->max_track
;
157 *last_sect
= parse
->last_sect
;
158 *drive
= parse
->drive
;
162 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
163 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
165 /* Will always be a fixed parameter for us */
166 #define FD_SECTOR_LEN 512
167 #define FD_SECTOR_SC 2 /* Sector size code */
168 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
170 typedef struct FDCtrl FDCtrl
;
172 /* Floppy disk drive emulation */
173 typedef enum FDiskFlags
{
174 FDISK_DBL_SIDES
= 0x01,
177 typedef struct FDrive
{
179 BlockDriverState
*bs
;
182 uint8_t perpendicular
; /* 2.88 MB access mode */
189 uint8_t last_sect
; /* Nb sector per track */
190 uint8_t max_track
; /* Nb of tracks */
191 uint16_t bps
; /* Bytes per sector */
192 uint8_t ro
; /* Is read-only */
193 uint8_t media_changed
; /* Is media changed */
194 uint8_t media_rate
; /* Data rate of medium */
197 static void fd_init(FDrive
*drv
)
200 drv
->drive
= FDRIVE_DRV_NONE
;
201 drv
->perpendicular
= 0;
207 #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1)
209 static int fd_sector_calc(uint8_t head
, uint8_t track
, uint8_t sect
,
210 uint8_t last_sect
, uint8_t num_sides
)
212 return (((track
* num_sides
) + head
) * last_sect
) + sect
- 1;
215 /* Returns current position, in sectors, for given drive */
216 static int fd_sector(FDrive
*drv
)
218 return fd_sector_calc(drv
->head
, drv
->track
, drv
->sect
, drv
->last_sect
,
222 /* Seek to a new position:
223 * returns 0 if already on right track
224 * returns 1 if track changed
225 * returns 2 if track is invalid
226 * returns 3 if sector is invalid
227 * returns 4 if seek is disabled
229 static int fd_seek(FDrive
*drv
, uint8_t head
, uint8_t track
, uint8_t sect
,
235 if (track
> drv
->max_track
||
236 (head
!= 0 && (drv
->flags
& FDISK_DBL_SIDES
) == 0)) {
237 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
238 head
, track
, sect
, 1,
239 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
240 drv
->max_track
, drv
->last_sect
);
243 if (sect
> drv
->last_sect
) {
244 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
245 head
, track
, sect
, 1,
246 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
247 drv
->max_track
, drv
->last_sect
);
250 sector
= fd_sector_calc(head
, track
, sect
, drv
->last_sect
, NUM_SIDES(drv
));
252 if (sector
!= fd_sector(drv
)) {
255 FLOPPY_DPRINTF("error: no implicit seek %d %02x %02x"
256 " (max=%d %02x %02x)\n",
257 head
, track
, sect
, 1, drv
->max_track
,
263 if (drv
->track
!= track
) {
264 if (drv
->bs
!= NULL
&& bdrv_is_inserted(drv
->bs
)) {
265 drv
->media_changed
= 0;
273 if (drv
->bs
== NULL
|| !bdrv_is_inserted(drv
->bs
)) {
280 /* Set drive back to track 0 */
281 static void fd_recalibrate(FDrive
*drv
)
283 FLOPPY_DPRINTF("recalibrate\n");
284 fd_seek(drv
, 0, 0, 1, 1);
287 /* Revalidate a disk drive after a disk change */
288 static void fd_revalidate(FDrive
*drv
)
290 int nb_heads
, max_track
, last_sect
, ro
;
294 FLOPPY_DPRINTF("revalidate\n");
295 if (drv
->bs
!= NULL
) {
296 ro
= bdrv_is_read_only(drv
->bs
);
297 pick_geometry(drv
->bs
, &nb_heads
, &max_track
,
298 &last_sect
, drv
->drive
, &drive
, &rate
);
299 if (!bdrv_is_inserted(drv
->bs
)) {
300 FLOPPY_DPRINTF("No disk in drive\n");
302 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", nb_heads
,
303 max_track
, last_sect
, ro
? "ro" : "rw");
306 drv
->flags
&= ~FDISK_DBL_SIDES
;
308 drv
->flags
|= FDISK_DBL_SIDES
;
310 drv
->max_track
= max_track
;
311 drv
->last_sect
= last_sect
;
314 drv
->media_rate
= rate
;
316 FLOPPY_DPRINTF("No drive connected\n");
319 drv
->flags
&= ~FDISK_DBL_SIDES
;
323 /********************************************************/
324 /* Intel 82078 floppy disk controller emulation */
326 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
);
327 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
);
328 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
329 int dma_pos
, int dma_len
);
330 static void fdctrl_raise_irq(FDCtrl
*fdctrl
, uint8_t status0
);
331 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
);
333 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
);
334 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
);
335 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
);
336 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
);
337 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
);
338 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
);
339 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
);
340 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
);
341 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
);
342 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
);
343 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
);
344 static void fdctrl_write_ccr(FDCtrl
*fdctrl
, uint32_t value
);
355 FD_STATE_MULTI
= 0x01, /* multi track flag */
356 FD_STATE_FORMAT
= 0x02, /* format flag */
357 FD_STATE_SEEK
= 0x04, /* seek flag */
373 FD_CMD_READ_TRACK
= 0x02,
374 FD_CMD_SPECIFY
= 0x03,
375 FD_CMD_SENSE_DRIVE_STATUS
= 0x04,
378 FD_CMD_RECALIBRATE
= 0x07,
379 FD_CMD_SENSE_INTERRUPT_STATUS
= 0x08,
380 FD_CMD_WRITE_DELETED
= 0x09,
381 FD_CMD_READ_ID
= 0x0a,
382 FD_CMD_READ_DELETED
= 0x0c,
383 FD_CMD_FORMAT_TRACK
= 0x0d,
384 FD_CMD_DUMPREG
= 0x0e,
386 FD_CMD_VERSION
= 0x10,
387 FD_CMD_SCAN_EQUAL
= 0x11,
388 FD_CMD_PERPENDICULAR_MODE
= 0x12,
389 FD_CMD_CONFIGURE
= 0x13,
391 FD_CMD_VERIFY
= 0x16,
392 FD_CMD_POWERDOWN_MODE
= 0x17,
393 FD_CMD_PART_ID
= 0x18,
394 FD_CMD_SCAN_LOW_OR_EQUAL
= 0x19,
395 FD_CMD_SCAN_HIGH_OR_EQUAL
= 0x1d,
397 FD_CMD_OPTION
= 0x33,
398 FD_CMD_RESTORE
= 0x4e,
399 FD_CMD_DRIVE_SPECIFICATION_COMMAND
= 0x8e,
400 FD_CMD_RELATIVE_SEEK_OUT
= 0x8f,
401 FD_CMD_FORMAT_AND_WRITE
= 0xcd,
402 FD_CMD_RELATIVE_SEEK_IN
= 0xcf,
406 FD_CONFIG_PRETRK
= 0xff, /* Pre-compensation set to track 0 */
407 FD_CONFIG_FIFOTHR
= 0x0f, /* FIFO threshold set to 1 byte */
408 FD_CONFIG_POLL
= 0x10, /* Poll enabled */
409 FD_CONFIG_EFIFO
= 0x20, /* FIFO disabled */
410 FD_CONFIG_EIS
= 0x40, /* No implied seeks */
419 FD_SR0_ABNTERM
= 0x40,
420 FD_SR0_INVCMD
= 0x80,
421 FD_SR0_RDYCHG
= 0xc0,
425 FD_SR1_MA
= 0x01, /* Missing address mark */
426 FD_SR1_NW
= 0x02, /* Not writable */
427 FD_SR1_EC
= 0x80, /* End of cylinder */
431 FD_SR2_SNS
= 0x04, /* Scan not satisfied */
432 FD_SR2_SEH
= 0x08, /* Scan equal hit */
443 FD_SRA_INTPEND
= 0x80,
457 FD_DOR_SELMASK
= 0x03,
459 FD_DOR_SELMASK
= 0x01,
461 FD_DOR_nRESET
= 0x04,
463 FD_DOR_MOTEN0
= 0x10,
464 FD_DOR_MOTEN1
= 0x20,
465 FD_DOR_MOTEN2
= 0x40,
466 FD_DOR_MOTEN3
= 0x80,
471 FD_TDR_BOOTSEL
= 0x0c,
473 FD_TDR_BOOTSEL
= 0x04,
478 FD_DSR_DRATEMASK
= 0x03,
479 FD_DSR_PWRDOWN
= 0x40,
480 FD_DSR_SWRESET
= 0x80,
484 FD_MSR_DRV0BUSY
= 0x01,
485 FD_MSR_DRV1BUSY
= 0x02,
486 FD_MSR_DRV2BUSY
= 0x04,
487 FD_MSR_DRV3BUSY
= 0x08,
488 FD_MSR_CMDBUSY
= 0x10,
489 FD_MSR_NONDMA
= 0x20,
495 FD_DIR_DSKCHG
= 0x80,
498 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
499 #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
500 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
505 /* Controller state */
506 QEMUTimer
*result_timer
;
508 /* Controller's identification */
514 uint8_t dor_vmstate
; /* only used as temp during vmstate */
529 uint8_t eot
; /* last wanted sector */
530 /* States kept only to be returned back */
531 /* precompensation */
535 /* Power down config (also with status regB access mode */
538 uint8_t num_floppies
;
541 FDrive drives
[MAX_FD
];
543 uint32_t check_media_rate
;
549 typedef struct FDCtrlSysBus
{
554 typedef struct FDCtrlISABus
{
564 static uint32_t fdctrl_read (void *opaque
, uint32_t reg
)
566 FDCtrl
*fdctrl
= opaque
;
572 retval
= fdctrl_read_statusA(fdctrl
);
575 retval
= fdctrl_read_statusB(fdctrl
);
578 retval
= fdctrl_read_dor(fdctrl
);
581 retval
= fdctrl_read_tape(fdctrl
);
584 retval
= fdctrl_read_main_status(fdctrl
);
587 retval
= fdctrl_read_data(fdctrl
);
590 retval
= fdctrl_read_dir(fdctrl
);
593 retval
= (uint32_t)(-1);
596 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg
& 7, retval
);
601 static void fdctrl_write (void *opaque
, uint32_t reg
, uint32_t value
)
603 FDCtrl
*fdctrl
= opaque
;
605 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg
& 7, value
);
610 fdctrl_write_dor(fdctrl
, value
);
613 fdctrl_write_tape(fdctrl
, value
);
616 fdctrl_write_rate(fdctrl
, value
);
619 fdctrl_write_data(fdctrl
, value
);
622 fdctrl_write_ccr(fdctrl
, value
);
629 static uint64_t fdctrl_read_mem (void *opaque
, target_phys_addr_t reg
,
632 return fdctrl_read(opaque
, (uint32_t)reg
);
635 static void fdctrl_write_mem (void *opaque
, target_phys_addr_t reg
,
636 uint64_t value
, unsigned size
)
638 fdctrl_write(opaque
, (uint32_t)reg
, value
);
641 static const MemoryRegionOps fdctrl_mem_ops
= {
642 .read
= fdctrl_read_mem
,
643 .write
= fdctrl_write_mem
,
644 .endianness
= DEVICE_NATIVE_ENDIAN
,
647 static const MemoryRegionOps fdctrl_mem_strict_ops
= {
648 .read
= fdctrl_read_mem
,
649 .write
= fdctrl_write_mem
,
650 .endianness
= DEVICE_NATIVE_ENDIAN
,
652 .min_access_size
= 1,
653 .max_access_size
= 1,
657 static bool fdrive_media_changed_needed(void *opaque
)
659 FDrive
*drive
= opaque
;
661 return (drive
->bs
!= NULL
&& drive
->media_changed
!= 1);
664 static const VMStateDescription vmstate_fdrive_media_changed
= {
665 .name
= "fdrive/media_changed",
667 .minimum_version_id
= 1,
668 .minimum_version_id_old
= 1,
669 .fields
= (VMStateField
[]) {
670 VMSTATE_UINT8(media_changed
, FDrive
),
671 VMSTATE_END_OF_LIST()
675 static bool fdrive_media_rate_needed(void *opaque
)
677 FDrive
*drive
= opaque
;
679 return drive
->fdctrl
->check_media_rate
;
682 static const VMStateDescription vmstate_fdrive_media_rate
= {
683 .name
= "fdrive/media_rate",
685 .minimum_version_id
= 1,
686 .minimum_version_id_old
= 1,
687 .fields
= (VMStateField
[]) {
688 VMSTATE_UINT8(media_rate
, FDrive
),
689 VMSTATE_END_OF_LIST()
693 static const VMStateDescription vmstate_fdrive
= {
696 .minimum_version_id
= 1,
697 .minimum_version_id_old
= 1,
698 .fields
= (VMStateField
[]) {
699 VMSTATE_UINT8(head
, FDrive
),
700 VMSTATE_UINT8(track
, FDrive
),
701 VMSTATE_UINT8(sect
, FDrive
),
702 VMSTATE_END_OF_LIST()
704 .subsections
= (VMStateSubsection
[]) {
706 .vmsd
= &vmstate_fdrive_media_changed
,
707 .needed
= &fdrive_media_changed_needed
,
709 .vmsd
= &vmstate_fdrive_media_rate
,
710 .needed
= &fdrive_media_rate_needed
,
717 static void fdc_pre_save(void *opaque
)
721 s
->dor_vmstate
= s
->dor
| GET_CUR_DRV(s
);
724 static int fdc_post_load(void *opaque
, int version_id
)
728 SET_CUR_DRV(s
, s
->dor_vmstate
& FD_DOR_SELMASK
);
729 s
->dor
= s
->dor_vmstate
& ~FD_DOR_SELMASK
;
733 static const VMStateDescription vmstate_fdc
= {
736 .minimum_version_id
= 2,
737 .minimum_version_id_old
= 2,
738 .pre_save
= fdc_pre_save
,
739 .post_load
= fdc_post_load
,
740 .fields
= (VMStateField
[]) {
741 /* Controller State */
742 VMSTATE_UINT8(sra
, FDCtrl
),
743 VMSTATE_UINT8(srb
, FDCtrl
),
744 VMSTATE_UINT8(dor_vmstate
, FDCtrl
),
745 VMSTATE_UINT8(tdr
, FDCtrl
),
746 VMSTATE_UINT8(dsr
, FDCtrl
),
747 VMSTATE_UINT8(msr
, FDCtrl
),
748 VMSTATE_UINT8(status0
, FDCtrl
),
749 VMSTATE_UINT8(status1
, FDCtrl
),
750 VMSTATE_UINT8(status2
, FDCtrl
),
752 VMSTATE_VARRAY_INT32(fifo
, FDCtrl
, fifo_size
, 0, vmstate_info_uint8
,
754 VMSTATE_UINT32(data_pos
, FDCtrl
),
755 VMSTATE_UINT32(data_len
, FDCtrl
),
756 VMSTATE_UINT8(data_state
, FDCtrl
),
757 VMSTATE_UINT8(data_dir
, FDCtrl
),
758 VMSTATE_UINT8(eot
, FDCtrl
),
759 /* States kept only to be returned back */
760 VMSTATE_UINT8(timer0
, FDCtrl
),
761 VMSTATE_UINT8(timer1
, FDCtrl
),
762 VMSTATE_UINT8(precomp_trk
, FDCtrl
),
763 VMSTATE_UINT8(config
, FDCtrl
),
764 VMSTATE_UINT8(lock
, FDCtrl
),
765 VMSTATE_UINT8(pwrd
, FDCtrl
),
766 VMSTATE_UINT8_EQUAL(num_floppies
, FDCtrl
),
767 VMSTATE_STRUCT_ARRAY(drives
, FDCtrl
, MAX_FD
, 1,
768 vmstate_fdrive
, FDrive
),
769 VMSTATE_END_OF_LIST()
773 static void fdctrl_external_reset_sysbus(DeviceState
*d
)
775 FDCtrlSysBus
*sys
= container_of(d
, FDCtrlSysBus
, busdev
.qdev
);
776 FDCtrl
*s
= &sys
->state
;
781 static void fdctrl_external_reset_isa(DeviceState
*d
)
783 FDCtrlISABus
*isa
= container_of(d
, FDCtrlISABus
, busdev
.qdev
);
784 FDCtrl
*s
= &isa
->state
;
789 static void fdctrl_handle_tc(void *opaque
, int irq
, int level
)
791 //FDCtrl *s = opaque;
795 FLOPPY_DPRINTF("TC pulsed\n");
799 /* Change IRQ state */
800 static void fdctrl_reset_irq(FDCtrl
*fdctrl
)
802 if (!(fdctrl
->sra
& FD_SRA_INTPEND
))
804 FLOPPY_DPRINTF("Reset interrupt\n");
805 qemu_set_irq(fdctrl
->irq
, 0);
806 fdctrl
->sra
&= ~FD_SRA_INTPEND
;
809 static void fdctrl_raise_irq(FDCtrl
*fdctrl
, uint8_t status0
)
812 if (fdctrl
->sun4m
&& (fdctrl
->msr
& FD_MSR_CMDBUSY
)) {
814 fdctrl
->msr
&= ~FD_MSR_CMDBUSY
;
815 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
816 fdctrl
->status0
= status0
;
819 if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
820 qemu_set_irq(fdctrl
->irq
, 1);
821 fdctrl
->sra
|= FD_SRA_INTPEND
;
824 fdctrl
->reset_sensei
= 0;
825 fdctrl
->status0
= status0
;
826 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl
->status0
);
829 /* Reset controller */
830 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
)
834 FLOPPY_DPRINTF("reset controller\n");
835 fdctrl_reset_irq(fdctrl
);
836 /* Initialise controller */
839 if (!fdctrl
->drives
[1].bs
)
840 fdctrl
->sra
|= FD_SRA_nDRV2
;
842 fdctrl
->dor
= FD_DOR_nRESET
;
843 fdctrl
->dor
|= (fdctrl
->dma_chann
!= -1) ? FD_DOR_DMAEN
: 0;
844 fdctrl
->msr
= FD_MSR_RQM
;
846 fdctrl
->data_pos
= 0;
847 fdctrl
->data_len
= 0;
848 fdctrl
->data_state
= 0;
849 fdctrl
->data_dir
= FD_DIR_WRITE
;
850 for (i
= 0; i
< MAX_FD
; i
++)
851 fd_recalibrate(&fdctrl
->drives
[i
]);
852 fdctrl_reset_fifo(fdctrl
);
854 fdctrl_raise_irq(fdctrl
, FD_SR0_RDYCHG
);
855 fdctrl
->reset_sensei
= FD_RESET_SENSEI_COUNT
;
859 static inline FDrive
*drv0(FDCtrl
*fdctrl
)
861 return &fdctrl
->drives
[(fdctrl
->tdr
& FD_TDR_BOOTSEL
) >> 2];
864 static inline FDrive
*drv1(FDCtrl
*fdctrl
)
866 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (1 << 2))
867 return &fdctrl
->drives
[1];
869 return &fdctrl
->drives
[0];
873 static inline FDrive
*drv2(FDCtrl
*fdctrl
)
875 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (2 << 2))
876 return &fdctrl
->drives
[2];
878 return &fdctrl
->drives
[1];
881 static inline FDrive
*drv3(FDCtrl
*fdctrl
)
883 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (3 << 2))
884 return &fdctrl
->drives
[3];
886 return &fdctrl
->drives
[2];
890 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
)
892 switch (fdctrl
->cur_drv
) {
893 case 0: return drv0(fdctrl
);
894 case 1: return drv1(fdctrl
);
896 case 2: return drv2(fdctrl
);
897 case 3: return drv3(fdctrl
);
899 default: return NULL
;
903 /* Status A register : 0x00 (read-only) */
904 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
)
906 uint32_t retval
= fdctrl
->sra
;
908 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval
);
913 /* Status B register : 0x01 (read-only) */
914 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
)
916 uint32_t retval
= fdctrl
->srb
;
918 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval
);
923 /* Digital output register : 0x02 */
924 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
)
926 uint32_t retval
= fdctrl
->dor
;
929 retval
|= fdctrl
->cur_drv
;
930 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval
);
935 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
)
937 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value
);
940 if (value
& FD_DOR_MOTEN0
)
941 fdctrl
->srb
|= FD_SRB_MTR0
;
943 fdctrl
->srb
&= ~FD_SRB_MTR0
;
944 if (value
& FD_DOR_MOTEN1
)
945 fdctrl
->srb
|= FD_SRB_MTR1
;
947 fdctrl
->srb
&= ~FD_SRB_MTR1
;
951 fdctrl
->srb
|= FD_SRB_DR0
;
953 fdctrl
->srb
&= ~FD_SRB_DR0
;
956 if (!(value
& FD_DOR_nRESET
)) {
957 if (fdctrl
->dor
& FD_DOR_nRESET
) {
958 FLOPPY_DPRINTF("controller enter RESET state\n");
961 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
962 FLOPPY_DPRINTF("controller out of RESET state\n");
963 fdctrl_reset(fdctrl
, 1);
964 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
968 fdctrl
->cur_drv
= value
& FD_DOR_SELMASK
;
973 /* Tape drive register : 0x03 */
974 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
)
976 uint32_t retval
= fdctrl
->tdr
;
978 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval
);
983 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
)
986 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
987 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
990 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value
);
991 /* Disk boot selection indicator */
992 fdctrl
->tdr
= value
& FD_TDR_BOOTSEL
;
993 /* Tape indicators: never allow */
996 /* Main status register : 0x04 (read) */
997 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
)
999 uint32_t retval
= fdctrl
->msr
;
1001 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1002 fdctrl
->dor
|= FD_DOR_nRESET
;
1004 /* Sparc mutation */
1005 if (fdctrl
->sun4m
) {
1006 retval
|= FD_MSR_DIO
;
1007 fdctrl_reset_irq(fdctrl
);
1010 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval
);
1015 /* Data select rate register : 0x04 (write) */
1016 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
)
1019 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1020 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1023 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value
);
1024 /* Reset: autoclear */
1025 if (value
& FD_DSR_SWRESET
) {
1026 fdctrl
->dor
&= ~FD_DOR_nRESET
;
1027 fdctrl_reset(fdctrl
, 1);
1028 fdctrl
->dor
|= FD_DOR_nRESET
;
1030 if (value
& FD_DSR_PWRDOWN
) {
1031 fdctrl_reset(fdctrl
, 1);
1033 fdctrl
->dsr
= value
;
1036 /* Configuration control register: 0x07 (write) */
1037 static void fdctrl_write_ccr(FDCtrl
*fdctrl
, uint32_t value
)
1040 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1041 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1044 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value
);
1046 /* Only the rate selection bits used in AT mode, and we
1047 * store those in the DSR.
1049 fdctrl
->dsr
= (fdctrl
->dsr
& ~FD_DSR_DRATEMASK
) |
1050 (value
& FD_DSR_DRATEMASK
);
1053 static int fdctrl_media_changed(FDrive
*drv
)
1055 return drv
->media_changed
;
1058 /* Digital input register : 0x07 (read-only) */
1059 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
)
1061 uint32_t retval
= 0;
1063 if (fdctrl_media_changed(get_cur_drv(fdctrl
))) {
1064 retval
|= FD_DIR_DSKCHG
;
1067 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval
);
1073 /* FIFO state control */
1074 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
)
1076 fdctrl
->data_dir
= FD_DIR_WRITE
;
1077 fdctrl
->data_pos
= 0;
1078 fdctrl
->msr
&= ~(FD_MSR_CMDBUSY
| FD_MSR_DIO
);
1081 /* Set FIFO status for the host to read */
1082 static void fdctrl_set_fifo(FDCtrl
*fdctrl
, int fifo_len
, uint8_t status0
)
1084 fdctrl
->data_dir
= FD_DIR_READ
;
1085 fdctrl
->data_len
= fifo_len
;
1086 fdctrl
->data_pos
= 0;
1087 fdctrl
->msr
|= FD_MSR_CMDBUSY
| FD_MSR_RQM
| FD_MSR_DIO
;
1089 fdctrl_raise_irq(fdctrl
, status0
);
1093 /* Set an error: unimplemented/unknown command */
1094 static void fdctrl_unimplemented(FDCtrl
*fdctrl
, int direction
)
1096 qemu_log_mask(LOG_UNIMP
, "fdc: unimplemented command 0x%02x\n",
1098 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
1099 fdctrl_set_fifo(fdctrl
, 1, 0);
1102 /* Seek to next sector
1103 * returns 0 when end of track reached (for DBL_SIDES on head 1)
1104 * otherwise returns 1
1106 static int fdctrl_seek_to_next_sect(FDCtrl
*fdctrl
, FDrive
*cur_drv
)
1108 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1109 cur_drv
->head
, cur_drv
->track
, cur_drv
->sect
,
1110 fd_sector(cur_drv
));
1111 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1113 uint8_t new_head
= cur_drv
->head
;
1114 uint8_t new_track
= cur_drv
->track
;
1115 uint8_t new_sect
= cur_drv
->sect
;
1119 if (new_sect
>= cur_drv
->last_sect
||
1120 new_sect
== fdctrl
->eot
) {
1122 if (FD_MULTI_TRACK(fdctrl
->data_state
)) {
1123 if (new_head
== 0 &&
1124 (cur_drv
->flags
& FDISK_DBL_SIDES
) != 0) {
1129 if ((cur_drv
->flags
& FDISK_DBL_SIDES
) == 0) {
1138 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1139 new_head
, new_track
, new_sect
, fd_sector(cur_drv
));
1144 fd_seek(cur_drv
, new_head
, new_track
, new_sect
, 1);
1148 /* Callback for transfer end (stop or abort) */
1149 static void fdctrl_stop_transfer(FDCtrl
*fdctrl
, uint8_t status0
,
1150 uint8_t status1
, uint8_t status2
)
1154 cur_drv
= get_cur_drv(fdctrl
);
1155 fdctrl
->status0
= status0
| FD_SR0_SEEK
| (cur_drv
->head
<< 2) |
1156 GET_CUR_DRV(fdctrl
);
1158 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1159 status0
, status1
, status2
, fdctrl
->status0
);
1160 fdctrl
->fifo
[0] = fdctrl
->status0
;
1161 fdctrl
->fifo
[1] = status1
;
1162 fdctrl
->fifo
[2] = status2
;
1163 fdctrl
->fifo
[3] = cur_drv
->track
;
1164 fdctrl
->fifo
[4] = cur_drv
->head
;
1165 fdctrl
->fifo
[5] = cur_drv
->sect
;
1166 fdctrl
->fifo
[6] = FD_SECTOR_SC
;
1167 fdctrl
->data_dir
= FD_DIR_READ
;
1168 if (!(fdctrl
->msr
& FD_MSR_NONDMA
)) {
1169 DMA_release_DREQ(fdctrl
->dma_chann
);
1171 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
1172 fdctrl
->msr
&= ~FD_MSR_NONDMA
;
1173 fdctrl_set_fifo(fdctrl
, 7, fdctrl
->status0
);
1176 /* Prepare a data transfer (either DMA or FIFO) */
1177 static void fdctrl_start_transfer(FDCtrl
*fdctrl
, int direction
)
1183 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1184 cur_drv
= get_cur_drv(fdctrl
);
1185 kt
= fdctrl
->fifo
[2];
1186 kh
= fdctrl
->fifo
[3];
1187 ks
= fdctrl
->fifo
[4];
1188 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1189 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1190 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1191 NUM_SIDES(cur_drv
)));
1192 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1195 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1196 fdctrl
->fifo
[3] = kt
;
1197 fdctrl
->fifo
[4] = kh
;
1198 fdctrl
->fifo
[5] = ks
;
1202 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1203 fdctrl
->fifo
[3] = kt
;
1204 fdctrl
->fifo
[4] = kh
;
1205 fdctrl
->fifo
[5] = ks
;
1208 /* No seek enabled */
1209 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1210 fdctrl
->fifo
[3] = kt
;
1211 fdctrl
->fifo
[4] = kh
;
1212 fdctrl
->fifo
[5] = ks
;
1221 /* Check the data rate. If the programmed data rate does not match
1222 * the currently inserted medium, the operation has to fail. */
1223 if (fdctrl
->check_media_rate
&&
1224 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
1225 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1226 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
1227 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
1228 fdctrl
->fifo
[3] = kt
;
1229 fdctrl
->fifo
[4] = kh
;
1230 fdctrl
->fifo
[5] = ks
;
1234 /* Set the FIFO state */
1235 fdctrl
->data_dir
= direction
;
1236 fdctrl
->data_pos
= 0;
1237 fdctrl
->msr
|= FD_MSR_CMDBUSY
;
1238 if (fdctrl
->fifo
[0] & 0x80)
1239 fdctrl
->data_state
|= FD_STATE_MULTI
;
1241 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1243 fdctrl
->data_state
|= FD_STATE_SEEK
;
1245 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1246 if (fdctrl
->fifo
[5] == 00) {
1247 fdctrl
->data_len
= fdctrl
->fifo
[8];
1250 fdctrl
->data_len
= 128 << (fdctrl
->fifo
[5] > 7 ? 7 : fdctrl
->fifo
[5]);
1251 tmp
= (fdctrl
->fifo
[6] - ks
+ 1);
1252 if (fdctrl
->fifo
[0] & 0x80)
1253 tmp
+= fdctrl
->fifo
[6];
1254 fdctrl
->data_len
*= tmp
;
1256 fdctrl
->eot
= fdctrl
->fifo
[6];
1257 if (fdctrl
->dor
& FD_DOR_DMAEN
) {
1259 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1260 dma_mode
= DMA_get_channel_mode(fdctrl
->dma_chann
);
1261 dma_mode
= (dma_mode
>> 2) & 3;
1262 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1263 dma_mode
, direction
,
1264 (128 << fdctrl
->fifo
[5]) *
1265 (cur_drv
->last_sect
- ks
+ 1), fdctrl
->data_len
);
1266 if (((direction
== FD_DIR_SCANE
|| direction
== FD_DIR_SCANL
||
1267 direction
== FD_DIR_SCANH
) && dma_mode
== 0) ||
1268 (direction
== FD_DIR_WRITE
&& dma_mode
== 2) ||
1269 (direction
== FD_DIR_READ
&& dma_mode
== 1)) {
1270 /* No access is allowed until DMA transfer has completed */
1271 fdctrl
->msr
&= ~FD_MSR_RQM
;
1272 /* Now, we just have to wait for the DMA controller to
1275 DMA_hold_DREQ(fdctrl
->dma_chann
);
1276 DMA_schedule(fdctrl
->dma_chann
);
1279 FLOPPY_DPRINTF("bad dma_mode=%d direction=%d\n", dma_mode
,
1283 FLOPPY_DPRINTF("start non-DMA transfer\n");
1284 fdctrl
->msr
|= FD_MSR_NONDMA
;
1285 if (direction
!= FD_DIR_WRITE
)
1286 fdctrl
->msr
|= FD_MSR_DIO
;
1287 /* IO based transfer: calculate len */
1288 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1293 /* Prepare a transfer of deleted data */
1294 static void fdctrl_start_transfer_del(FDCtrl
*fdctrl
, int direction
)
1296 qemu_log_mask(LOG_UNIMP
, "fdctrl_start_transfer_del() unimplemented\n");
1298 /* We don't handle deleted data,
1299 * so we don't return *ANYTHING*
1301 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1304 /* handlers for DMA transfers */
1305 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
1306 int dma_pos
, int dma_len
)
1310 int len
, start_pos
, rel_pos
;
1311 uint8_t status0
= 0x00, status1
= 0x00, status2
= 0x00;
1314 if (fdctrl
->msr
& FD_MSR_RQM
) {
1315 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1318 cur_drv
= get_cur_drv(fdctrl
);
1319 if (fdctrl
->data_dir
== FD_DIR_SCANE
|| fdctrl
->data_dir
== FD_DIR_SCANL
||
1320 fdctrl
->data_dir
== FD_DIR_SCANH
)
1321 status2
= FD_SR2_SNS
;
1322 if (dma_len
> fdctrl
->data_len
)
1323 dma_len
= fdctrl
->data_len
;
1324 if (cur_drv
->bs
== NULL
) {
1325 if (fdctrl
->data_dir
== FD_DIR_WRITE
)
1326 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1328 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1330 goto transfer_error
;
1332 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1333 for (start_pos
= fdctrl
->data_pos
; fdctrl
->data_pos
< dma_len
;) {
1334 len
= dma_len
- fdctrl
->data_pos
;
1335 if (len
+ rel_pos
> FD_SECTOR_LEN
)
1336 len
= FD_SECTOR_LEN
- rel_pos
;
1337 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1338 "(%d-0x%08x 0x%08x)\n", len
, dma_len
, fdctrl
->data_pos
,
1339 fdctrl
->data_len
, GET_CUR_DRV(fdctrl
), cur_drv
->head
,
1340 cur_drv
->track
, cur_drv
->sect
, fd_sector(cur_drv
),
1341 fd_sector(cur_drv
) * FD_SECTOR_LEN
);
1342 if (fdctrl
->data_dir
!= FD_DIR_WRITE
||
1343 len
< FD_SECTOR_LEN
|| rel_pos
!= 0) {
1344 /* READ & SCAN commands and realign to a sector for WRITE */
1345 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
),
1346 fdctrl
->fifo
, 1) < 0) {
1347 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1348 fd_sector(cur_drv
));
1349 /* Sure, image size is too small... */
1350 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1353 switch (fdctrl
->data_dir
) {
1356 DMA_write_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1357 fdctrl
->data_pos
, len
);
1360 /* WRITE commands */
1362 /* Handle readonly medium early, no need to do DMA, touch the
1363 * LED or attempt any writes. A real floppy doesn't attempt
1364 * to write to readonly media either. */
1365 fdctrl_stop_transfer(fdctrl
,
1366 FD_SR0_ABNTERM
| FD_SR0_SEEK
, FD_SR1_NW
,
1368 goto transfer_error
;
1371 DMA_read_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1372 fdctrl
->data_pos
, len
);
1373 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
),
1374 fdctrl
->fifo
, 1) < 0) {
1375 FLOPPY_DPRINTF("error writing sector %d\n",
1376 fd_sector(cur_drv
));
1377 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1378 goto transfer_error
;
1384 uint8_t tmpbuf
[FD_SECTOR_LEN
];
1386 DMA_read_memory (nchan
, tmpbuf
, fdctrl
->data_pos
, len
);
1387 ret
= memcmp(tmpbuf
, fdctrl
->fifo
+ rel_pos
, len
);
1389 status2
= FD_SR2_SEH
;
1392 if ((ret
< 0 && fdctrl
->data_dir
== FD_DIR_SCANL
) ||
1393 (ret
> 0 && fdctrl
->data_dir
== FD_DIR_SCANH
)) {
1400 fdctrl
->data_pos
+= len
;
1401 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1403 /* Seek to next sector */
1404 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
))
1409 len
= fdctrl
->data_pos
- start_pos
;
1410 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1411 fdctrl
->data_pos
, len
, fdctrl
->data_len
);
1412 if (fdctrl
->data_dir
== FD_DIR_SCANE
||
1413 fdctrl
->data_dir
== FD_DIR_SCANL
||
1414 fdctrl
->data_dir
== FD_DIR_SCANH
)
1415 status2
= FD_SR2_SEH
;
1416 if (FD_DID_SEEK(fdctrl
->data_state
))
1417 status0
|= FD_SR0_SEEK
;
1418 fdctrl
->data_len
-= len
;
1419 fdctrl_stop_transfer(fdctrl
, status0
, status1
, status2
);
1425 /* Data register : 0x05 */
1426 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
)
1429 uint32_t retval
= 0;
1432 cur_drv
= get_cur_drv(fdctrl
);
1433 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1434 if (!(fdctrl
->msr
& FD_MSR_RQM
) || !(fdctrl
->msr
& FD_MSR_DIO
)) {
1435 FLOPPY_DPRINTF("error: controller not ready for reading\n");
1438 pos
= fdctrl
->data_pos
;
1439 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1440 pos
%= FD_SECTOR_LEN
;
1442 if (fdctrl
->data_pos
!= 0)
1443 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1444 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1445 fd_sector(cur_drv
));
1448 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1449 FLOPPY_DPRINTF("error getting sector %d\n",
1450 fd_sector(cur_drv
));
1451 /* Sure, image size is too small... */
1452 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1456 retval
= fdctrl
->fifo
[pos
];
1457 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1458 fdctrl
->data_pos
= 0;
1459 /* Switch from transfer mode to status mode
1460 * then from status mode to command mode
1462 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1463 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1465 fdctrl_reset_fifo(fdctrl
);
1466 fdctrl_reset_irq(fdctrl
);
1469 FLOPPY_DPRINTF("data register: 0x%02x\n", retval
);
1474 static void fdctrl_format_sector(FDCtrl
*fdctrl
)
1479 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1480 cur_drv
= get_cur_drv(fdctrl
);
1481 kt
= fdctrl
->fifo
[6];
1482 kh
= fdctrl
->fifo
[7];
1483 ks
= fdctrl
->fifo
[8];
1484 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1485 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1486 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1487 NUM_SIDES(cur_drv
)));
1488 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1491 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1492 fdctrl
->fifo
[3] = kt
;
1493 fdctrl
->fifo
[4] = kh
;
1494 fdctrl
->fifo
[5] = ks
;
1498 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1499 fdctrl
->fifo
[3] = kt
;
1500 fdctrl
->fifo
[4] = kh
;
1501 fdctrl
->fifo
[5] = ks
;
1504 /* No seek enabled */
1505 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1506 fdctrl
->fifo
[3] = kt
;
1507 fdctrl
->fifo
[4] = kh
;
1508 fdctrl
->fifo
[5] = ks
;
1511 fdctrl
->data_state
|= FD_STATE_SEEK
;
1516 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1517 if (cur_drv
->bs
== NULL
||
1518 bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1519 FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv
));
1520 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1522 if (cur_drv
->sect
== cur_drv
->last_sect
) {
1523 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1524 /* Last sector done */
1525 if (FD_DID_SEEK(fdctrl
->data_state
))
1526 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1528 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1531 fdctrl
->data_pos
= 0;
1532 fdctrl
->data_len
= 4;
1537 static void fdctrl_handle_lock(FDCtrl
*fdctrl
, int direction
)
1539 fdctrl
->lock
= (fdctrl
->fifo
[0] & 0x80) ? 1 : 0;
1540 fdctrl
->fifo
[0] = fdctrl
->lock
<< 4;
1541 fdctrl_set_fifo(fdctrl
, 1, 0);
1544 static void fdctrl_handle_dumpreg(FDCtrl
*fdctrl
, int direction
)
1546 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1548 /* Drives position */
1549 fdctrl
->fifo
[0] = drv0(fdctrl
)->track
;
1550 fdctrl
->fifo
[1] = drv1(fdctrl
)->track
;
1552 fdctrl
->fifo
[2] = drv2(fdctrl
)->track
;
1553 fdctrl
->fifo
[3] = drv3(fdctrl
)->track
;
1555 fdctrl
->fifo
[2] = 0;
1556 fdctrl
->fifo
[3] = 0;
1559 fdctrl
->fifo
[4] = fdctrl
->timer0
;
1560 fdctrl
->fifo
[5] = (fdctrl
->timer1
<< 1) | (fdctrl
->dor
& FD_DOR_DMAEN
? 1 : 0);
1561 fdctrl
->fifo
[6] = cur_drv
->last_sect
;
1562 fdctrl
->fifo
[7] = (fdctrl
->lock
<< 7) |
1563 (cur_drv
->perpendicular
<< 2);
1564 fdctrl
->fifo
[8] = fdctrl
->config
;
1565 fdctrl
->fifo
[9] = fdctrl
->precomp_trk
;
1566 fdctrl_set_fifo(fdctrl
, 10, 0);
1569 static void fdctrl_handle_version(FDCtrl
*fdctrl
, int direction
)
1571 /* Controller's version */
1572 fdctrl
->fifo
[0] = fdctrl
->version
;
1573 fdctrl_set_fifo(fdctrl
, 1, 0);
1576 static void fdctrl_handle_partid(FDCtrl
*fdctrl
, int direction
)
1578 fdctrl
->fifo
[0] = 0x41; /* Stepping 1 */
1579 fdctrl_set_fifo(fdctrl
, 1, 0);
1582 static void fdctrl_handle_restore(FDCtrl
*fdctrl
, int direction
)
1584 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1586 /* Drives position */
1587 drv0(fdctrl
)->track
= fdctrl
->fifo
[3];
1588 drv1(fdctrl
)->track
= fdctrl
->fifo
[4];
1590 drv2(fdctrl
)->track
= fdctrl
->fifo
[5];
1591 drv3(fdctrl
)->track
= fdctrl
->fifo
[6];
1594 fdctrl
->timer0
= fdctrl
->fifo
[7];
1595 fdctrl
->timer1
= fdctrl
->fifo
[8];
1596 cur_drv
->last_sect
= fdctrl
->fifo
[9];
1597 fdctrl
->lock
= fdctrl
->fifo
[10] >> 7;
1598 cur_drv
->perpendicular
= (fdctrl
->fifo
[10] >> 2) & 0xF;
1599 fdctrl
->config
= fdctrl
->fifo
[11];
1600 fdctrl
->precomp_trk
= fdctrl
->fifo
[12];
1601 fdctrl
->pwrd
= fdctrl
->fifo
[13];
1602 fdctrl_reset_fifo(fdctrl
);
1605 static void fdctrl_handle_save(FDCtrl
*fdctrl
, int direction
)
1607 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1609 fdctrl
->fifo
[0] = 0;
1610 fdctrl
->fifo
[1] = 0;
1611 /* Drives position */
1612 fdctrl
->fifo
[2] = drv0(fdctrl
)->track
;
1613 fdctrl
->fifo
[3] = drv1(fdctrl
)->track
;
1615 fdctrl
->fifo
[4] = drv2(fdctrl
)->track
;
1616 fdctrl
->fifo
[5] = drv3(fdctrl
)->track
;
1618 fdctrl
->fifo
[4] = 0;
1619 fdctrl
->fifo
[5] = 0;
1622 fdctrl
->fifo
[6] = fdctrl
->timer0
;
1623 fdctrl
->fifo
[7] = fdctrl
->timer1
;
1624 fdctrl
->fifo
[8] = cur_drv
->last_sect
;
1625 fdctrl
->fifo
[9] = (fdctrl
->lock
<< 7) |
1626 (cur_drv
->perpendicular
<< 2);
1627 fdctrl
->fifo
[10] = fdctrl
->config
;
1628 fdctrl
->fifo
[11] = fdctrl
->precomp_trk
;
1629 fdctrl
->fifo
[12] = fdctrl
->pwrd
;
1630 fdctrl
->fifo
[13] = 0;
1631 fdctrl
->fifo
[14] = 0;
1632 fdctrl_set_fifo(fdctrl
, 15, 0);
1635 static void fdctrl_handle_readid(FDCtrl
*fdctrl
, int direction
)
1637 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1639 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1640 qemu_mod_timer(fdctrl
->result_timer
,
1641 qemu_get_clock_ns(vm_clock
) + (get_ticks_per_sec() / 50));
1644 static void fdctrl_handle_format_track(FDCtrl
*fdctrl
, int direction
)
1648 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1649 cur_drv
= get_cur_drv(fdctrl
);
1650 fdctrl
->data_state
|= FD_STATE_FORMAT
;
1651 if (fdctrl
->fifo
[0] & 0x80)
1652 fdctrl
->data_state
|= FD_STATE_MULTI
;
1654 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1655 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1657 fdctrl
->fifo
[2] > 7 ? 16384 : 128 << fdctrl
->fifo
[2];
1659 cur_drv
->last_sect
=
1660 cur_drv
->flags
& FDISK_DBL_SIDES
? fdctrl
->fifo
[3] :
1661 fdctrl
->fifo
[3] / 2;
1663 cur_drv
->last_sect
= fdctrl
->fifo
[3];
1665 /* TODO: implement format using DMA expected by the Bochs BIOS
1666 * and Linux fdformat (read 3 bytes per sector via DMA and fill
1667 * the sector with the specified fill byte
1669 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1670 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1673 static void fdctrl_handle_specify(FDCtrl
*fdctrl
, int direction
)
1675 fdctrl
->timer0
= (fdctrl
->fifo
[1] >> 4) & 0xF;
1676 fdctrl
->timer1
= fdctrl
->fifo
[2] >> 1;
1677 if (fdctrl
->fifo
[2] & 1)
1678 fdctrl
->dor
&= ~FD_DOR_DMAEN
;
1680 fdctrl
->dor
|= FD_DOR_DMAEN
;
1681 /* No result back */
1682 fdctrl_reset_fifo(fdctrl
);
1685 static void fdctrl_handle_sense_drive_status(FDCtrl
*fdctrl
, int direction
)
1689 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1690 cur_drv
= get_cur_drv(fdctrl
);
1691 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1692 /* 1 Byte status back */
1693 fdctrl
->fifo
[0] = (cur_drv
->ro
<< 6) |
1694 (cur_drv
->track
== 0 ? 0x10 : 0x00) |
1695 (cur_drv
->head
<< 2) |
1696 GET_CUR_DRV(fdctrl
) |
1698 fdctrl_set_fifo(fdctrl
, 1, 0);
1701 static void fdctrl_handle_recalibrate(FDCtrl
*fdctrl
, int direction
)
1705 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1706 cur_drv
= get_cur_drv(fdctrl
);
1707 fd_recalibrate(cur_drv
);
1708 fdctrl_reset_fifo(fdctrl
);
1709 /* Raise Interrupt */
1710 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1713 static void fdctrl_handle_sense_interrupt_status(FDCtrl
*fdctrl
, int direction
)
1715 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1717 if (fdctrl
->reset_sensei
> 0) {
1719 FD_SR0_RDYCHG
+ FD_RESET_SENSEI_COUNT
- fdctrl
->reset_sensei
;
1720 fdctrl
->reset_sensei
--;
1721 } else if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
1722 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
1723 fdctrl_set_fifo(fdctrl
, 1, 0);
1727 (fdctrl
->status0
& ~(FD_SR0_HEAD
| FD_SR0_DS1
| FD_SR0_DS0
))
1728 | GET_CUR_DRV(fdctrl
);
1731 fdctrl
->fifo
[1] = cur_drv
->track
;
1732 fdctrl_set_fifo(fdctrl
, 2, 0);
1733 fdctrl_reset_irq(fdctrl
);
1734 fdctrl
->status0
= FD_SR0_RDYCHG
;
1737 static void fdctrl_handle_seek(FDCtrl
*fdctrl
, int direction
)
1741 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1742 cur_drv
= get_cur_drv(fdctrl
);
1743 fdctrl_reset_fifo(fdctrl
);
1744 /* The seek command just sends step pulses to the drive and doesn't care if
1745 * there is a medium inserted of if it's banging the head against the drive.
1747 fd_seek(cur_drv
, cur_drv
->head
, fdctrl
->fifo
[2], cur_drv
->sect
, 1);
1748 /* Raise Interrupt */
1749 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1752 static void fdctrl_handle_perpendicular_mode(FDCtrl
*fdctrl
, int direction
)
1754 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1756 if (fdctrl
->fifo
[1] & 0x80)
1757 cur_drv
->perpendicular
= fdctrl
->fifo
[1] & 0x7;
1758 /* No result back */
1759 fdctrl_reset_fifo(fdctrl
);
1762 static void fdctrl_handle_configure(FDCtrl
*fdctrl
, int direction
)
1764 fdctrl
->config
= fdctrl
->fifo
[2];
1765 fdctrl
->precomp_trk
= fdctrl
->fifo
[3];
1766 /* No result back */
1767 fdctrl_reset_fifo(fdctrl
);
1770 static void fdctrl_handle_powerdown_mode(FDCtrl
*fdctrl
, int direction
)
1772 fdctrl
->pwrd
= fdctrl
->fifo
[1];
1773 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1774 fdctrl_set_fifo(fdctrl
, 1, 0);
1777 static void fdctrl_handle_option(FDCtrl
*fdctrl
, int direction
)
1779 /* No result back */
1780 fdctrl_reset_fifo(fdctrl
);
1783 static void fdctrl_handle_drive_specification_command(FDCtrl
*fdctrl
, int direction
)
1785 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1787 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x80) {
1788 /* Command parameters done */
1789 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x40) {
1790 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1791 fdctrl
->fifo
[2] = 0;
1792 fdctrl
->fifo
[3] = 0;
1793 fdctrl_set_fifo(fdctrl
, 4, 0);
1795 fdctrl_reset_fifo(fdctrl
);
1797 } else if (fdctrl
->data_len
> 7) {
1799 fdctrl
->fifo
[0] = 0x80 |
1800 (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1801 fdctrl_set_fifo(fdctrl
, 1, 0);
1805 static void fdctrl_handle_relative_seek_out(FDCtrl
*fdctrl
, int direction
)
1809 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1810 cur_drv
= get_cur_drv(fdctrl
);
1811 if (fdctrl
->fifo
[2] + cur_drv
->track
>= cur_drv
->max_track
) {
1812 fd_seek(cur_drv
, cur_drv
->head
, cur_drv
->max_track
- 1,
1815 fd_seek(cur_drv
, cur_drv
->head
, fdctrl
->fifo
[2], cur_drv
->sect
, 1);
1817 fdctrl_reset_fifo(fdctrl
);
1818 /* Raise Interrupt */
1819 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1822 static void fdctrl_handle_relative_seek_in(FDCtrl
*fdctrl
, int direction
)
1826 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1827 cur_drv
= get_cur_drv(fdctrl
);
1828 if (fdctrl
->fifo
[2] > cur_drv
->track
) {
1829 fd_seek(cur_drv
, cur_drv
->head
, 0, cur_drv
->sect
, 1);
1831 fd_seek(cur_drv
, cur_drv
->head
, fdctrl
->fifo
[2], cur_drv
->sect
, 1);
1833 fdctrl_reset_fifo(fdctrl
);
1834 /* Raise Interrupt */
1835 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1838 static const struct {
1843 void (*handler
)(FDCtrl
*fdctrl
, int direction
);
1846 { FD_CMD_READ
, 0x1f, "READ", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1847 { FD_CMD_WRITE
, 0x3f, "WRITE", 8, fdctrl_start_transfer
, FD_DIR_WRITE
},
1848 { FD_CMD_SEEK
, 0xff, "SEEK", 2, fdctrl_handle_seek
},
1849 { FD_CMD_SENSE_INTERRUPT_STATUS
, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status
},
1850 { FD_CMD_RECALIBRATE
, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate
},
1851 { FD_CMD_FORMAT_TRACK
, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track
},
1852 { FD_CMD_READ_TRACK
, 0xbf, "READ TRACK", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1853 { FD_CMD_RESTORE
, 0xff, "RESTORE", 17, fdctrl_handle_restore
}, /* part of READ DELETED DATA */
1854 { FD_CMD_SAVE
, 0xff, "SAVE", 0, fdctrl_handle_save
}, /* part of READ DELETED DATA */
1855 { FD_CMD_READ_DELETED
, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_READ
},
1856 { FD_CMD_SCAN_EQUAL
, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANE
},
1857 { FD_CMD_VERIFY
, 0x1f, "VERIFY", 8, fdctrl_unimplemented
},
1858 { FD_CMD_SCAN_LOW_OR_EQUAL
, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANL
},
1859 { FD_CMD_SCAN_HIGH_OR_EQUAL
, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANH
},
1860 { FD_CMD_WRITE_DELETED
, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_WRITE
},
1861 { FD_CMD_READ_ID
, 0xbf, "READ ID", 1, fdctrl_handle_readid
},
1862 { FD_CMD_SPECIFY
, 0xff, "SPECIFY", 2, fdctrl_handle_specify
},
1863 { FD_CMD_SENSE_DRIVE_STATUS
, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status
},
1864 { FD_CMD_PERPENDICULAR_MODE
, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode
},
1865 { FD_CMD_CONFIGURE
, 0xff, "CONFIGURE", 3, fdctrl_handle_configure
},
1866 { FD_CMD_POWERDOWN_MODE
, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode
},
1867 { FD_CMD_OPTION
, 0xff, "OPTION", 1, fdctrl_handle_option
},
1868 { FD_CMD_DRIVE_SPECIFICATION_COMMAND
, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command
},
1869 { FD_CMD_RELATIVE_SEEK_OUT
, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out
},
1870 { FD_CMD_FORMAT_AND_WRITE
, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented
},
1871 { FD_CMD_RELATIVE_SEEK_IN
, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in
},
1872 { FD_CMD_LOCK
, 0x7f, "LOCK", 0, fdctrl_handle_lock
},
1873 { FD_CMD_DUMPREG
, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg
},
1874 { FD_CMD_VERSION
, 0xff, "VERSION", 0, fdctrl_handle_version
},
1875 { FD_CMD_PART_ID
, 0xff, "PART ID", 0, fdctrl_handle_partid
},
1876 { FD_CMD_WRITE
, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer
, FD_DIR_WRITE
}, /* not in specification ; BeOS 4.5 bug */
1877 { 0, 0, "unknown", 0, fdctrl_unimplemented
}, /* default handler */
1879 /* Associate command to an index in the 'handlers' array */
1880 static uint8_t command_to_handler
[256];
1882 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
)
1888 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1889 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1892 if (!(fdctrl
->msr
& FD_MSR_RQM
) || (fdctrl
->msr
& FD_MSR_DIO
)) {
1893 FLOPPY_DPRINTF("error: controller not ready for writing\n");
1896 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1897 /* Is it write command time ? */
1898 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1899 /* FIFO data write */
1900 pos
= fdctrl
->data_pos
++;
1901 pos
%= FD_SECTOR_LEN
;
1902 fdctrl
->fifo
[pos
] = value
;
1903 if (pos
== FD_SECTOR_LEN
- 1 ||
1904 fdctrl
->data_pos
== fdctrl
->data_len
) {
1905 cur_drv
= get_cur_drv(fdctrl
);
1906 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1907 FLOPPY_DPRINTF("error writing sector %d\n",
1908 fd_sector(cur_drv
));
1911 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1912 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1913 fd_sector(cur_drv
));
1917 /* Switch from transfer mode to status mode
1918 * then from status mode to command mode
1920 if (fdctrl
->data_pos
== fdctrl
->data_len
)
1921 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1924 if (fdctrl
->data_pos
== 0) {
1926 pos
= command_to_handler
[value
& 0xff];
1927 FLOPPY_DPRINTF("%s command\n", handlers
[pos
].name
);
1928 fdctrl
->data_len
= handlers
[pos
].parameters
+ 1;
1929 fdctrl
->msr
|= FD_MSR_CMDBUSY
;
1932 FLOPPY_DPRINTF("%s: %02x\n", __func__
, value
);
1933 fdctrl
->fifo
[fdctrl
->data_pos
++] = value
;
1934 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
1935 /* We now have all parameters
1936 * and will be able to treat the command
1938 if (fdctrl
->data_state
& FD_STATE_FORMAT
) {
1939 fdctrl_format_sector(fdctrl
);
1943 pos
= command_to_handler
[fdctrl
->fifo
[0] & 0xff];
1944 FLOPPY_DPRINTF("treat %s command\n", handlers
[pos
].name
);
1945 (*handlers
[pos
].handler
)(fdctrl
, handlers
[pos
].direction
);
1949 static void fdctrl_result_timer(void *opaque
)
1951 FDCtrl
*fdctrl
= opaque
;
1952 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1954 /* Pretend we are spinning.
1955 * This is needed for Coherent, which uses READ ID to check for
1956 * sector interleaving.
1958 if (cur_drv
->last_sect
!= 0) {
1959 cur_drv
->sect
= (cur_drv
->sect
% cur_drv
->last_sect
) + 1;
1961 /* READ_ID can't automatically succeed! */
1962 if (fdctrl
->check_media_rate
&&
1963 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
1964 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
1965 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
1966 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
1968 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1972 static void fdctrl_change_cb(void *opaque
, bool load
)
1974 FDrive
*drive
= opaque
;
1976 drive
->media_changed
= 1;
1977 fd_revalidate(drive
);
1980 static const BlockDevOps fdctrl_block_ops
= {
1981 .change_media_cb
= fdctrl_change_cb
,
1984 /* Init functions */
1985 static int fdctrl_connect_drives(FDCtrl
*fdctrl
)
1990 for (i
= 0; i
< MAX_FD
; i
++) {
1991 drive
= &fdctrl
->drives
[i
];
1992 drive
->fdctrl
= fdctrl
;
1995 if (bdrv_get_on_error(drive
->bs
, 0) != BLOCK_ERR_STOP_ENOSPC
) {
1996 error_report("fdc doesn't support drive option werror");
1999 if (bdrv_get_on_error(drive
->bs
, 1) != BLOCK_ERR_REPORT
) {
2000 error_report("fdc doesn't support drive option rerror");
2006 fdctrl_change_cb(drive
, 0);
2008 bdrv_set_dev_ops(drive
->bs
, &fdctrl_block_ops
, drive
);
2014 ISADevice
*fdctrl_init_isa(ISABus
*bus
, DriveInfo
**fds
)
2018 dev
= isa_try_create(bus
, "isa-fdc");
2024 qdev_prop_set_drive_nofail(&dev
->qdev
, "driveA", fds
[0]->bdrv
);
2027 qdev_prop_set_drive_nofail(&dev
->qdev
, "driveB", fds
[1]->bdrv
);
2029 qdev_init_nofail(&dev
->qdev
);
2034 void fdctrl_init_sysbus(qemu_irq irq
, int dma_chann
,
2035 target_phys_addr_t mmio_base
, DriveInfo
**fds
)
2041 dev
= qdev_create(NULL
, "sysbus-fdc");
2042 sys
= DO_UPCAST(FDCtrlSysBus
, busdev
.qdev
, dev
);
2043 fdctrl
= &sys
->state
;
2044 fdctrl
->dma_chann
= dma_chann
; /* FIXME */
2046 qdev_prop_set_drive_nofail(dev
, "driveA", fds
[0]->bdrv
);
2049 qdev_prop_set_drive_nofail(dev
, "driveB", fds
[1]->bdrv
);
2051 qdev_init_nofail(dev
);
2052 sysbus_connect_irq(&sys
->busdev
, 0, irq
);
2053 sysbus_mmio_map(&sys
->busdev
, 0, mmio_base
);
2056 void sun4m_fdctrl_init(qemu_irq irq
, target_phys_addr_t io_base
,
2057 DriveInfo
**fds
, qemu_irq
*fdc_tc
)
2062 dev
= qdev_create(NULL
, "SUNW,fdtwo");
2064 qdev_prop_set_drive_nofail(dev
, "drive", fds
[0]->bdrv
);
2066 qdev_init_nofail(dev
);
2067 sys
= DO_UPCAST(FDCtrlSysBus
, busdev
.qdev
, dev
);
2068 sysbus_connect_irq(&sys
->busdev
, 0, irq
);
2069 sysbus_mmio_map(&sys
->busdev
, 0, io_base
);
2070 *fdc_tc
= qdev_get_gpio_in(dev
, 0);
2073 static int fdctrl_init_common(FDCtrl
*fdctrl
)
2076 static int command_tables_inited
= 0;
2078 /* Fill 'command_to_handler' lookup table */
2079 if (!command_tables_inited
) {
2080 command_tables_inited
= 1;
2081 for (i
= ARRAY_SIZE(handlers
) - 1; i
>= 0; i
--) {
2082 for (j
= 0; j
< sizeof(command_to_handler
); j
++) {
2083 if ((j
& handlers
[i
].mask
) == handlers
[i
].value
) {
2084 command_to_handler
[j
] = i
;
2090 FLOPPY_DPRINTF("init controller\n");
2091 fdctrl
->fifo
= qemu_memalign(512, FD_SECTOR_LEN
);
2092 fdctrl
->fifo_size
= 512;
2093 fdctrl
->result_timer
= qemu_new_timer_ns(vm_clock
,
2094 fdctrl_result_timer
, fdctrl
);
2096 fdctrl
->version
= 0x90; /* Intel 82078 controller */
2097 fdctrl
->config
= FD_CONFIG_EIS
| FD_CONFIG_EFIFO
; /* Implicit seek, polling & FIFO enabled */
2098 fdctrl
->num_floppies
= MAX_FD
;
2100 if (fdctrl
->dma_chann
!= -1)
2101 DMA_register_channel(fdctrl
->dma_chann
, &fdctrl_transfer_handler
, fdctrl
);
2102 return fdctrl_connect_drives(fdctrl
);
2105 static const MemoryRegionPortio fdc_portio_list
[] = {
2106 { 1, 5, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
2107 { 7, 1, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
2108 PORTIO_END_OF_LIST(),
2111 static int isabus_fdc_init1(ISADevice
*dev
)
2113 FDCtrlISABus
*isa
= DO_UPCAST(FDCtrlISABus
, busdev
, dev
);
2114 FDCtrl
*fdctrl
= &isa
->state
;
2117 isa_register_portio_list(dev
, isa
->iobase
, fdc_portio_list
, fdctrl
, "fdc");
2119 isa_init_irq(&isa
->busdev
, &fdctrl
->irq
, isa
->irq
);
2120 fdctrl
->dma_chann
= isa
->dma
;
2122 qdev_set_legacy_instance_id(&dev
->qdev
, isa
->iobase
, 2);
2123 ret
= fdctrl_init_common(fdctrl
);
2125 add_boot_device_path(isa
->bootindexA
, &dev
->qdev
, "/floppy@0");
2126 add_boot_device_path(isa
->bootindexB
, &dev
->qdev
, "/floppy@1");
2131 static int sysbus_fdc_init1(SysBusDevice
*dev
)
2133 FDCtrlSysBus
*sys
= DO_UPCAST(FDCtrlSysBus
, busdev
, dev
);
2134 FDCtrl
*fdctrl
= &sys
->state
;
2137 memory_region_init_io(&fdctrl
->iomem
, &fdctrl_mem_ops
, fdctrl
, "fdc", 0x08);
2138 sysbus_init_mmio(dev
, &fdctrl
->iomem
);
2139 sysbus_init_irq(dev
, &fdctrl
->irq
);
2140 qdev_init_gpio_in(&dev
->qdev
, fdctrl_handle_tc
, 1);
2141 fdctrl
->dma_chann
= -1;
2143 qdev_set_legacy_instance_id(&dev
->qdev
, 0 /* io */, 2); /* FIXME */
2144 ret
= fdctrl_init_common(fdctrl
);
2149 static int sun4m_fdc_init1(SysBusDevice
*dev
)
2151 FDCtrl
*fdctrl
= &(FROM_SYSBUS(FDCtrlSysBus
, dev
)->state
);
2153 memory_region_init_io(&fdctrl
->iomem
, &fdctrl_mem_strict_ops
, fdctrl
,
2155 sysbus_init_mmio(dev
, &fdctrl
->iomem
);
2156 sysbus_init_irq(dev
, &fdctrl
->irq
);
2157 qdev_init_gpio_in(&dev
->qdev
, fdctrl_handle_tc
, 1);
2160 qdev_set_legacy_instance_id(&dev
->qdev
, 0 /* io */, 2); /* FIXME */
2161 return fdctrl_init_common(fdctrl
);
2164 FDriveType
isa_fdc_get_drive_type(ISADevice
*fdc
, int i
)
2166 FDCtrlISABus
*isa
= DO_UPCAST(FDCtrlISABus
, busdev
, fdc
);
2168 return isa
->state
.drives
[i
].drive
;
2171 static const VMStateDescription vmstate_isa_fdc
={
2174 .minimum_version_id
= 2,
2175 .fields
= (VMStateField
[]) {
2176 VMSTATE_STRUCT(state
, FDCtrlISABus
, 0, vmstate_fdc
, FDCtrl
),
2177 VMSTATE_END_OF_LIST()
2181 static Property isa_fdc_properties
[] = {
2182 DEFINE_PROP_HEX32("iobase", FDCtrlISABus
, iobase
, 0x3f0),
2183 DEFINE_PROP_UINT32("irq", FDCtrlISABus
, irq
, 6),
2184 DEFINE_PROP_UINT32("dma", FDCtrlISABus
, dma
, 2),
2185 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus
, state
.drives
[0].bs
),
2186 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus
, state
.drives
[1].bs
),
2187 DEFINE_PROP_INT32("bootindexA", FDCtrlISABus
, bootindexA
, -1),
2188 DEFINE_PROP_INT32("bootindexB", FDCtrlISABus
, bootindexB
, -1),
2189 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus
, state
.check_media_rate
,
2191 DEFINE_PROP_END_OF_LIST(),
2194 static void isabus_fdc_class_init1(ObjectClass
*klass
, void *data
)
2196 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2197 ISADeviceClass
*ic
= ISA_DEVICE_CLASS(klass
);
2198 ic
->init
= isabus_fdc_init1
;
2199 dc
->fw_name
= "fdc";
2201 dc
->reset
= fdctrl_external_reset_isa
;
2202 dc
->vmsd
= &vmstate_isa_fdc
;
2203 dc
->props
= isa_fdc_properties
;
2206 static TypeInfo isa_fdc_info
= {
2208 .parent
= TYPE_ISA_DEVICE
,
2209 .instance_size
= sizeof(FDCtrlISABus
),
2210 .class_init
= isabus_fdc_class_init1
,
2213 static const VMStateDescription vmstate_sysbus_fdc
={
2216 .minimum_version_id
= 2,
2217 .fields
= (VMStateField
[]) {
2218 VMSTATE_STRUCT(state
, FDCtrlSysBus
, 0, vmstate_fdc
, FDCtrl
),
2219 VMSTATE_END_OF_LIST()
2223 static Property sysbus_fdc_properties
[] = {
2224 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus
, state
.drives
[0].bs
),
2225 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus
, state
.drives
[1].bs
),
2226 DEFINE_PROP_END_OF_LIST(),
2229 static void sysbus_fdc_class_init(ObjectClass
*klass
, void *data
)
2231 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2232 SysBusDeviceClass
*k
= SYS_BUS_DEVICE_CLASS(klass
);
2234 k
->init
= sysbus_fdc_init1
;
2235 dc
->reset
= fdctrl_external_reset_sysbus
;
2236 dc
->vmsd
= &vmstate_sysbus_fdc
;
2237 dc
->props
= sysbus_fdc_properties
;
2240 static TypeInfo sysbus_fdc_info
= {
2241 .name
= "sysbus-fdc",
2242 .parent
= TYPE_SYS_BUS_DEVICE
,
2243 .instance_size
= sizeof(FDCtrlSysBus
),
2244 .class_init
= sysbus_fdc_class_init
,
2247 static Property sun4m_fdc_properties
[] = {
2248 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus
, state
.drives
[0].bs
),
2249 DEFINE_PROP_END_OF_LIST(),
2252 static void sun4m_fdc_class_init(ObjectClass
*klass
, void *data
)
2254 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2255 SysBusDeviceClass
*k
= SYS_BUS_DEVICE_CLASS(klass
);
2257 k
->init
= sun4m_fdc_init1
;
2258 dc
->reset
= fdctrl_external_reset_sysbus
;
2259 dc
->vmsd
= &vmstate_sysbus_fdc
;
2260 dc
->props
= sun4m_fdc_properties
;
2263 static TypeInfo sun4m_fdc_info
= {
2264 .name
= "SUNW,fdtwo",
2265 .parent
= TYPE_SYS_BUS_DEVICE
,
2266 .instance_size
= sizeof(FDCtrlSysBus
),
2267 .class_init
= sun4m_fdc_class_init
,
2270 static void fdc_register_types(void)
2272 type_register_static(&isa_fdc_info
);
2273 type_register_static(&sysbus_fdc_info
);
2274 type_register_static(&sun4m_fdc_info
);
2277 type_init(fdc_register_types
)