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.
31 #include "hw/block/fdc.h"
32 #include "qemu/error-report.h"
33 #include "qemu/timer.h"
34 #include "hw/isa/isa.h"
35 #include "hw/sysbus.h"
36 #include "sysemu/blockdev.h"
37 #include "sysemu/sysemu.h"
40 /********************************************************/
41 /* debug Floppy devices */
42 //#define DEBUG_FLOPPY
45 #define FLOPPY_DPRINTF(fmt, ...) \
46 do { printf("FLOPPY: " fmt , ## __VA_ARGS__); } while (0)
48 #define FLOPPY_DPRINTF(fmt, ...)
51 /********************************************************/
52 /* Floppy drive emulation */
54 typedef enum FDriveRate
{
55 FDRIVE_RATE_500K
= 0x00, /* 500 Kbps */
56 FDRIVE_RATE_300K
= 0x01, /* 300 Kbps */
57 FDRIVE_RATE_250K
= 0x02, /* 250 Kbps */
58 FDRIVE_RATE_1M
= 0x03, /* 1 Mbps */
61 typedef struct FDFormat
{
69 static const FDFormat fd_formats
[] = {
70 /* First entry is default format */
71 /* 1.44 MB 3"1/2 floppy disks */
72 { FDRIVE_DRV_144
, 18, 80, 1, FDRIVE_RATE_500K
, },
73 { FDRIVE_DRV_144
, 20, 80, 1, FDRIVE_RATE_500K
, },
74 { FDRIVE_DRV_144
, 21, 80, 1, FDRIVE_RATE_500K
, },
75 { FDRIVE_DRV_144
, 21, 82, 1, FDRIVE_RATE_500K
, },
76 { FDRIVE_DRV_144
, 21, 83, 1, FDRIVE_RATE_500K
, },
77 { FDRIVE_DRV_144
, 22, 80, 1, FDRIVE_RATE_500K
, },
78 { FDRIVE_DRV_144
, 23, 80, 1, FDRIVE_RATE_500K
, },
79 { FDRIVE_DRV_144
, 24, 80, 1, FDRIVE_RATE_500K
, },
80 /* 2.88 MB 3"1/2 floppy disks */
81 { FDRIVE_DRV_288
, 36, 80, 1, FDRIVE_RATE_1M
, },
82 { FDRIVE_DRV_288
, 39, 80, 1, FDRIVE_RATE_1M
, },
83 { FDRIVE_DRV_288
, 40, 80, 1, FDRIVE_RATE_1M
, },
84 { FDRIVE_DRV_288
, 44, 80, 1, FDRIVE_RATE_1M
, },
85 { FDRIVE_DRV_288
, 48, 80, 1, FDRIVE_RATE_1M
, },
86 /* 720 kB 3"1/2 floppy disks */
87 { FDRIVE_DRV_144
, 9, 80, 1, FDRIVE_RATE_250K
, },
88 { FDRIVE_DRV_144
, 10, 80, 1, FDRIVE_RATE_250K
, },
89 { FDRIVE_DRV_144
, 10, 82, 1, FDRIVE_RATE_250K
, },
90 { FDRIVE_DRV_144
, 10, 83, 1, FDRIVE_RATE_250K
, },
91 { FDRIVE_DRV_144
, 13, 80, 1, FDRIVE_RATE_250K
, },
92 { FDRIVE_DRV_144
, 14, 80, 1, FDRIVE_RATE_250K
, },
93 /* 1.2 MB 5"1/4 floppy disks */
94 { FDRIVE_DRV_120
, 15, 80, 1, FDRIVE_RATE_500K
, },
95 { FDRIVE_DRV_120
, 18, 80, 1, FDRIVE_RATE_500K
, },
96 { FDRIVE_DRV_120
, 18, 82, 1, FDRIVE_RATE_500K
, },
97 { FDRIVE_DRV_120
, 18, 83, 1, FDRIVE_RATE_500K
, },
98 { FDRIVE_DRV_120
, 20, 80, 1, FDRIVE_RATE_500K
, },
99 /* 720 kB 5"1/4 floppy disks */
100 { FDRIVE_DRV_120
, 9, 80, 1, FDRIVE_RATE_250K
, },
101 { FDRIVE_DRV_120
, 11, 80, 1, FDRIVE_RATE_250K
, },
102 /* 360 kB 5"1/4 floppy disks */
103 { FDRIVE_DRV_120
, 9, 40, 1, FDRIVE_RATE_300K
, },
104 { FDRIVE_DRV_120
, 9, 40, 0, FDRIVE_RATE_300K
, },
105 { FDRIVE_DRV_120
, 10, 41, 1, FDRIVE_RATE_300K
, },
106 { FDRIVE_DRV_120
, 10, 42, 1, FDRIVE_RATE_300K
, },
107 /* 320 kB 5"1/4 floppy disks */
108 { FDRIVE_DRV_120
, 8, 40, 1, FDRIVE_RATE_250K
, },
109 { FDRIVE_DRV_120
, 8, 40, 0, FDRIVE_RATE_250K
, },
110 /* 360 kB must match 5"1/4 better than 3"1/2... */
111 { FDRIVE_DRV_144
, 9, 80, 0, FDRIVE_RATE_250K
, },
113 { FDRIVE_DRV_NONE
, -1, -1, 0, 0, },
116 static void pick_geometry(BlockDriverState
*bs
, int *nb_heads
,
117 int *max_track
, int *last_sect
,
118 FDriveType drive_in
, FDriveType
*drive
,
121 const FDFormat
*parse
;
122 uint64_t nb_sectors
, size
;
123 int i
, first_match
, match
;
125 bdrv_get_geometry(bs
, &nb_sectors
);
129 parse
= &fd_formats
[i
];
130 if (parse
->drive
== FDRIVE_DRV_NONE
) {
133 if (drive_in
== parse
->drive
||
134 drive_in
== FDRIVE_DRV_NONE
) {
135 size
= (parse
->max_head
+ 1) * parse
->max_track
*
137 if (nb_sectors
== size
) {
141 if (first_match
== -1) {
147 if (first_match
== -1) {
152 parse
= &fd_formats
[match
];
154 *nb_heads
= parse
->max_head
+ 1;
155 *max_track
= parse
->max_track
;
156 *last_sect
= parse
->last_sect
;
157 *drive
= parse
->drive
;
161 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
162 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
164 /* Will always be a fixed parameter for us */
165 #define FD_SECTOR_LEN 512
166 #define FD_SECTOR_SC 2 /* Sector size code */
167 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
169 typedef struct FDCtrl FDCtrl
;
171 /* Floppy disk drive emulation */
172 typedef enum FDiskFlags
{
173 FDISK_DBL_SIDES
= 0x01,
176 typedef struct FDrive
{
178 BlockDriverState
*bs
;
181 uint8_t perpendicular
; /* 2.88 MB access mode */
188 uint8_t last_sect
; /* Nb sector per track */
189 uint8_t max_track
; /* Nb of tracks */
190 uint16_t bps
; /* Bytes per sector */
191 uint8_t ro
; /* Is read-only */
192 uint8_t media_changed
; /* Is media changed */
193 uint8_t media_rate
; /* Data rate of medium */
196 static void fd_init(FDrive
*drv
)
199 drv
->drive
= FDRIVE_DRV_NONE
;
200 drv
->perpendicular
= 0;
206 #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1)
208 static int fd_sector_calc(uint8_t head
, uint8_t track
, uint8_t sect
,
209 uint8_t last_sect
, uint8_t num_sides
)
211 return (((track
* num_sides
) + head
) * last_sect
) + sect
- 1;
214 /* Returns current position, in sectors, for given drive */
215 static int fd_sector(FDrive
*drv
)
217 return fd_sector_calc(drv
->head
, drv
->track
, drv
->sect
, drv
->last_sect
,
221 /* Seek to a new position:
222 * returns 0 if already on right track
223 * returns 1 if track changed
224 * returns 2 if track is invalid
225 * returns 3 if sector is invalid
226 * returns 4 if seek is disabled
228 static int fd_seek(FDrive
*drv
, uint8_t head
, uint8_t track
, uint8_t sect
,
234 if (track
> drv
->max_track
||
235 (head
!= 0 && (drv
->flags
& FDISK_DBL_SIDES
) == 0)) {
236 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
237 head
, track
, sect
, 1,
238 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
239 drv
->max_track
, drv
->last_sect
);
242 if (sect
> drv
->last_sect
) {
243 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
244 head
, track
, sect
, 1,
245 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
246 drv
->max_track
, drv
->last_sect
);
249 sector
= fd_sector_calc(head
, track
, sect
, drv
->last_sect
, NUM_SIDES(drv
));
251 if (sector
!= fd_sector(drv
)) {
254 FLOPPY_DPRINTF("error: no implicit seek %d %02x %02x"
255 " (max=%d %02x %02x)\n",
256 head
, track
, sect
, 1, drv
->max_track
,
262 if (drv
->track
!= track
) {
263 if (drv
->bs
!= NULL
&& bdrv_is_inserted(drv
->bs
)) {
264 drv
->media_changed
= 0;
272 if (drv
->bs
== NULL
|| !bdrv_is_inserted(drv
->bs
)) {
279 /* Set drive back to track 0 */
280 static void fd_recalibrate(FDrive
*drv
)
282 FLOPPY_DPRINTF("recalibrate\n");
283 fd_seek(drv
, 0, 0, 1, 1);
286 /* Revalidate a disk drive after a disk change */
287 static void fd_revalidate(FDrive
*drv
)
289 int nb_heads
, max_track
, last_sect
, ro
;
293 FLOPPY_DPRINTF("revalidate\n");
294 if (drv
->bs
!= NULL
) {
295 ro
= bdrv_is_read_only(drv
->bs
);
296 pick_geometry(drv
->bs
, &nb_heads
, &max_track
,
297 &last_sect
, drv
->drive
, &drive
, &rate
);
298 if (!bdrv_is_inserted(drv
->bs
)) {
299 FLOPPY_DPRINTF("No disk in drive\n");
301 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", nb_heads
,
302 max_track
, last_sect
, ro
? "ro" : "rw");
305 drv
->flags
&= ~FDISK_DBL_SIDES
;
307 drv
->flags
|= FDISK_DBL_SIDES
;
309 drv
->max_track
= max_track
;
310 drv
->last_sect
= last_sect
;
313 drv
->media_rate
= rate
;
315 FLOPPY_DPRINTF("No drive connected\n");
318 drv
->flags
&= ~FDISK_DBL_SIDES
;
322 /********************************************************/
323 /* Intel 82078 floppy disk controller emulation */
325 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
);
326 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
);
327 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
328 int dma_pos
, int dma_len
);
329 static void fdctrl_raise_irq(FDCtrl
*fdctrl
);
330 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
);
332 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
);
333 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
);
334 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
);
335 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
);
336 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
);
337 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
);
338 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
);
339 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
);
340 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
);
341 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
);
342 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
);
343 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 */
372 FD_CMD_READ_TRACK
= 0x02,
373 FD_CMD_SPECIFY
= 0x03,
374 FD_CMD_SENSE_DRIVE_STATUS
= 0x04,
377 FD_CMD_RECALIBRATE
= 0x07,
378 FD_CMD_SENSE_INTERRUPT_STATUS
= 0x08,
379 FD_CMD_WRITE_DELETED
= 0x09,
380 FD_CMD_READ_ID
= 0x0a,
381 FD_CMD_READ_DELETED
= 0x0c,
382 FD_CMD_FORMAT_TRACK
= 0x0d,
383 FD_CMD_DUMPREG
= 0x0e,
385 FD_CMD_VERSION
= 0x10,
386 FD_CMD_SCAN_EQUAL
= 0x11,
387 FD_CMD_PERPENDICULAR_MODE
= 0x12,
388 FD_CMD_CONFIGURE
= 0x13,
390 FD_CMD_VERIFY
= 0x16,
391 FD_CMD_POWERDOWN_MODE
= 0x17,
392 FD_CMD_PART_ID
= 0x18,
393 FD_CMD_SCAN_LOW_OR_EQUAL
= 0x19,
394 FD_CMD_SCAN_HIGH_OR_EQUAL
= 0x1d,
396 FD_CMD_OPTION
= 0x33,
397 FD_CMD_RESTORE
= 0x4e,
398 FD_CMD_DRIVE_SPECIFICATION_COMMAND
= 0x8e,
399 FD_CMD_RELATIVE_SEEK_OUT
= 0x8f,
400 FD_CMD_FORMAT_AND_WRITE
= 0xcd,
401 FD_CMD_RELATIVE_SEEK_IN
= 0xcf,
405 FD_CONFIG_PRETRK
= 0xff, /* Pre-compensation set to track 0 */
406 FD_CONFIG_FIFOTHR
= 0x0f, /* FIFO threshold set to 1 byte */
407 FD_CONFIG_POLL
= 0x10, /* Poll enabled */
408 FD_CONFIG_EFIFO
= 0x20, /* FIFO disabled */
409 FD_CONFIG_EIS
= 0x40, /* No implied seeks */
418 FD_SR0_ABNTERM
= 0x40,
419 FD_SR0_INVCMD
= 0x80,
420 FD_SR0_RDYCHG
= 0xc0,
424 FD_SR1_MA
= 0x01, /* Missing address mark */
425 FD_SR1_NW
= 0x02, /* Not writable */
426 FD_SR1_EC
= 0x80, /* End of cylinder */
430 FD_SR2_SNS
= 0x04, /* Scan not satisfied */
431 FD_SR2_SEH
= 0x08, /* Scan equal hit */
442 FD_SRA_INTPEND
= 0x80,
456 FD_DOR_SELMASK
= 0x03,
458 FD_DOR_SELMASK
= 0x01,
460 FD_DOR_nRESET
= 0x04,
462 FD_DOR_MOTEN0
= 0x10,
463 FD_DOR_MOTEN1
= 0x20,
464 FD_DOR_MOTEN2
= 0x40,
465 FD_DOR_MOTEN3
= 0x80,
470 FD_TDR_BOOTSEL
= 0x0c,
472 FD_TDR_BOOTSEL
= 0x04,
477 FD_DSR_DRATEMASK
= 0x03,
478 FD_DSR_PWRDOWN
= 0x40,
479 FD_DSR_SWRESET
= 0x80,
483 FD_MSR_DRV0BUSY
= 0x01,
484 FD_MSR_DRV1BUSY
= 0x02,
485 FD_MSR_DRV2BUSY
= 0x04,
486 FD_MSR_DRV3BUSY
= 0x08,
487 FD_MSR_CMDBUSY
= 0x10,
488 FD_MSR_NONDMA
= 0x20,
494 FD_DIR_DSKCHG
= 0x80,
497 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
498 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
503 /* Controller state */
504 QEMUTimer
*result_timer
;
506 /* Controller's identification */
512 uint8_t dor_vmstate
; /* only used as temp during vmstate */
527 uint8_t eot
; /* last wanted sector */
528 /* States kept only to be returned back */
529 /* precompensation */
533 /* Power down config (also with status regB access mode */
536 uint8_t num_floppies
;
539 FDrive drives
[MAX_FD
];
541 uint32_t check_media_rate
;
547 #define TYPE_SYSBUS_FDC "base-sysbus-fdc"
548 #define SYSBUS_FDC(obj) OBJECT_CHECK(FDCtrlSysBus, (obj), TYPE_SYSBUS_FDC)
550 typedef struct FDCtrlSysBus
{
552 SysBusDevice parent_obj
;
558 #define ISA_FDC(obj) OBJECT_CHECK(FDCtrlISABus, (obj), TYPE_ISA_FDC)
560 typedef struct FDCtrlISABus
{
561 ISADevice parent_obj
;
571 static uint32_t fdctrl_read (void *opaque
, uint32_t reg
)
573 FDCtrl
*fdctrl
= opaque
;
579 retval
= fdctrl_read_statusA(fdctrl
);
582 retval
= fdctrl_read_statusB(fdctrl
);
585 retval
= fdctrl_read_dor(fdctrl
);
588 retval
= fdctrl_read_tape(fdctrl
);
591 retval
= fdctrl_read_main_status(fdctrl
);
594 retval
= fdctrl_read_data(fdctrl
);
597 retval
= fdctrl_read_dir(fdctrl
);
600 retval
= (uint32_t)(-1);
603 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg
& 7, retval
);
608 static void fdctrl_write (void *opaque
, uint32_t reg
, uint32_t value
)
610 FDCtrl
*fdctrl
= opaque
;
612 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg
& 7, value
);
617 fdctrl_write_dor(fdctrl
, value
);
620 fdctrl_write_tape(fdctrl
, value
);
623 fdctrl_write_rate(fdctrl
, value
);
626 fdctrl_write_data(fdctrl
, value
);
629 fdctrl_write_ccr(fdctrl
, value
);
636 static uint64_t fdctrl_read_mem (void *opaque
, hwaddr reg
,
639 return fdctrl_read(opaque
, (uint32_t)reg
);
642 static void fdctrl_write_mem (void *opaque
, hwaddr reg
,
643 uint64_t value
, unsigned size
)
645 fdctrl_write(opaque
, (uint32_t)reg
, value
);
648 static const MemoryRegionOps fdctrl_mem_ops
= {
649 .read
= fdctrl_read_mem
,
650 .write
= fdctrl_write_mem
,
651 .endianness
= DEVICE_NATIVE_ENDIAN
,
654 static const MemoryRegionOps fdctrl_mem_strict_ops
= {
655 .read
= fdctrl_read_mem
,
656 .write
= fdctrl_write_mem
,
657 .endianness
= DEVICE_NATIVE_ENDIAN
,
659 .min_access_size
= 1,
660 .max_access_size
= 1,
664 static bool fdrive_media_changed_needed(void *opaque
)
666 FDrive
*drive
= opaque
;
668 return (drive
->bs
!= NULL
&& drive
->media_changed
!= 1);
671 static const VMStateDescription vmstate_fdrive_media_changed
= {
672 .name
= "fdrive/media_changed",
674 .minimum_version_id
= 1,
675 .fields
= (VMStateField
[]) {
676 VMSTATE_UINT8(media_changed
, FDrive
),
677 VMSTATE_END_OF_LIST()
681 static bool fdrive_media_rate_needed(void *opaque
)
683 FDrive
*drive
= opaque
;
685 return drive
->fdctrl
->check_media_rate
;
688 static const VMStateDescription vmstate_fdrive_media_rate
= {
689 .name
= "fdrive/media_rate",
691 .minimum_version_id
= 1,
692 .fields
= (VMStateField
[]) {
693 VMSTATE_UINT8(media_rate
, FDrive
),
694 VMSTATE_END_OF_LIST()
698 static bool fdrive_perpendicular_needed(void *opaque
)
700 FDrive
*drive
= opaque
;
702 return drive
->perpendicular
!= 0;
705 static const VMStateDescription vmstate_fdrive_perpendicular
= {
706 .name
= "fdrive/perpendicular",
708 .minimum_version_id
= 1,
709 .fields
= (VMStateField
[]) {
710 VMSTATE_UINT8(perpendicular
, FDrive
),
711 VMSTATE_END_OF_LIST()
715 static int fdrive_post_load(void *opaque
, int version_id
)
717 fd_revalidate(opaque
);
721 static const VMStateDescription vmstate_fdrive
= {
724 .minimum_version_id
= 1,
725 .post_load
= fdrive_post_load
,
726 .fields
= (VMStateField
[]) {
727 VMSTATE_UINT8(head
, FDrive
),
728 VMSTATE_UINT8(track
, FDrive
),
729 VMSTATE_UINT8(sect
, FDrive
),
730 VMSTATE_END_OF_LIST()
732 .subsections
= (VMStateSubsection
[]) {
734 .vmsd
= &vmstate_fdrive_media_changed
,
735 .needed
= &fdrive_media_changed_needed
,
737 .vmsd
= &vmstate_fdrive_media_rate
,
738 .needed
= &fdrive_media_rate_needed
,
740 .vmsd
= &vmstate_fdrive_perpendicular
,
741 .needed
= &fdrive_perpendicular_needed
,
748 static void fdc_pre_save(void *opaque
)
752 s
->dor_vmstate
= s
->dor
| GET_CUR_DRV(s
);
755 static int fdc_post_load(void *opaque
, int version_id
)
759 SET_CUR_DRV(s
, s
->dor_vmstate
& FD_DOR_SELMASK
);
760 s
->dor
= s
->dor_vmstate
& ~FD_DOR_SELMASK
;
764 static bool fdc_reset_sensei_needed(void *opaque
)
768 return s
->reset_sensei
!= 0;
771 static const VMStateDescription vmstate_fdc_reset_sensei
= {
772 .name
= "fdc/reset_sensei",
774 .minimum_version_id
= 1,
775 .fields
= (VMStateField
[]) {
776 VMSTATE_INT32(reset_sensei
, FDCtrl
),
777 VMSTATE_END_OF_LIST()
781 static bool fdc_result_timer_needed(void *opaque
)
785 return timer_pending(s
->result_timer
);
788 static const VMStateDescription vmstate_fdc_result_timer
= {
789 .name
= "fdc/result_timer",
791 .minimum_version_id
= 1,
792 .fields
= (VMStateField
[]) {
793 VMSTATE_TIMER(result_timer
, FDCtrl
),
794 VMSTATE_END_OF_LIST()
798 static const VMStateDescription vmstate_fdc
= {
801 .minimum_version_id
= 2,
802 .pre_save
= fdc_pre_save
,
803 .post_load
= fdc_post_load
,
804 .fields
= (VMStateField
[]) {
805 /* Controller State */
806 VMSTATE_UINT8(sra
, FDCtrl
),
807 VMSTATE_UINT8(srb
, FDCtrl
),
808 VMSTATE_UINT8(dor_vmstate
, FDCtrl
),
809 VMSTATE_UINT8(tdr
, FDCtrl
),
810 VMSTATE_UINT8(dsr
, FDCtrl
),
811 VMSTATE_UINT8(msr
, FDCtrl
),
812 VMSTATE_UINT8(status0
, FDCtrl
),
813 VMSTATE_UINT8(status1
, FDCtrl
),
814 VMSTATE_UINT8(status2
, FDCtrl
),
816 VMSTATE_VARRAY_INT32(fifo
, FDCtrl
, fifo_size
, 0, vmstate_info_uint8
,
818 VMSTATE_UINT32(data_pos
, FDCtrl
),
819 VMSTATE_UINT32(data_len
, FDCtrl
),
820 VMSTATE_UINT8(data_state
, FDCtrl
),
821 VMSTATE_UINT8(data_dir
, FDCtrl
),
822 VMSTATE_UINT8(eot
, FDCtrl
),
823 /* States kept only to be returned back */
824 VMSTATE_UINT8(timer0
, FDCtrl
),
825 VMSTATE_UINT8(timer1
, FDCtrl
),
826 VMSTATE_UINT8(precomp_trk
, FDCtrl
),
827 VMSTATE_UINT8(config
, FDCtrl
),
828 VMSTATE_UINT8(lock
, FDCtrl
),
829 VMSTATE_UINT8(pwrd
, FDCtrl
),
830 VMSTATE_UINT8_EQUAL(num_floppies
, FDCtrl
),
831 VMSTATE_STRUCT_ARRAY(drives
, FDCtrl
, MAX_FD
, 1,
832 vmstate_fdrive
, FDrive
),
833 VMSTATE_END_OF_LIST()
835 .subsections
= (VMStateSubsection
[]) {
837 .vmsd
= &vmstate_fdc_reset_sensei
,
838 .needed
= fdc_reset_sensei_needed
,
840 .vmsd
= &vmstate_fdc_result_timer
,
841 .needed
= fdc_result_timer_needed
,
848 static void fdctrl_external_reset_sysbus(DeviceState
*d
)
850 FDCtrlSysBus
*sys
= SYSBUS_FDC(d
);
851 FDCtrl
*s
= &sys
->state
;
856 static void fdctrl_external_reset_isa(DeviceState
*d
)
858 FDCtrlISABus
*isa
= ISA_FDC(d
);
859 FDCtrl
*s
= &isa
->state
;
864 static void fdctrl_handle_tc(void *opaque
, int irq
, int level
)
866 //FDCtrl *s = opaque;
870 FLOPPY_DPRINTF("TC pulsed\n");
874 /* Change IRQ state */
875 static void fdctrl_reset_irq(FDCtrl
*fdctrl
)
878 if (!(fdctrl
->sra
& FD_SRA_INTPEND
))
880 FLOPPY_DPRINTF("Reset interrupt\n");
881 qemu_set_irq(fdctrl
->irq
, 0);
882 fdctrl
->sra
&= ~FD_SRA_INTPEND
;
885 static void fdctrl_raise_irq(FDCtrl
*fdctrl
)
888 if (fdctrl
->sun4m
&& (fdctrl
->msr
& FD_MSR_CMDBUSY
)) {
890 fdctrl
->msr
&= ~FD_MSR_CMDBUSY
;
891 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
894 if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
895 qemu_set_irq(fdctrl
->irq
, 1);
896 fdctrl
->sra
|= FD_SRA_INTPEND
;
899 fdctrl
->reset_sensei
= 0;
900 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl
->status0
);
903 /* Reset controller */
904 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
)
908 FLOPPY_DPRINTF("reset controller\n");
909 fdctrl_reset_irq(fdctrl
);
910 /* Initialise controller */
913 if (!fdctrl
->drives
[1].bs
)
914 fdctrl
->sra
|= FD_SRA_nDRV2
;
916 fdctrl
->dor
= FD_DOR_nRESET
;
917 fdctrl
->dor
|= (fdctrl
->dma_chann
!= -1) ? FD_DOR_DMAEN
: 0;
918 fdctrl
->msr
= FD_MSR_RQM
;
919 fdctrl
->reset_sensei
= 0;
920 timer_del(fdctrl
->result_timer
);
922 fdctrl
->data_pos
= 0;
923 fdctrl
->data_len
= 0;
924 fdctrl
->data_state
= 0;
925 fdctrl
->data_dir
= FD_DIR_WRITE
;
926 for (i
= 0; i
< MAX_FD
; i
++)
927 fd_recalibrate(&fdctrl
->drives
[i
]);
928 fdctrl_reset_fifo(fdctrl
);
930 fdctrl
->status0
|= FD_SR0_RDYCHG
;
931 fdctrl_raise_irq(fdctrl
);
932 fdctrl
->reset_sensei
= FD_RESET_SENSEI_COUNT
;
936 static inline FDrive
*drv0(FDCtrl
*fdctrl
)
938 return &fdctrl
->drives
[(fdctrl
->tdr
& FD_TDR_BOOTSEL
) >> 2];
941 static inline FDrive
*drv1(FDCtrl
*fdctrl
)
943 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (1 << 2))
944 return &fdctrl
->drives
[1];
946 return &fdctrl
->drives
[0];
950 static inline FDrive
*drv2(FDCtrl
*fdctrl
)
952 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (2 << 2))
953 return &fdctrl
->drives
[2];
955 return &fdctrl
->drives
[1];
958 static inline FDrive
*drv3(FDCtrl
*fdctrl
)
960 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (3 << 2))
961 return &fdctrl
->drives
[3];
963 return &fdctrl
->drives
[2];
967 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
)
969 switch (fdctrl
->cur_drv
) {
970 case 0: return drv0(fdctrl
);
971 case 1: return drv1(fdctrl
);
973 case 2: return drv2(fdctrl
);
974 case 3: return drv3(fdctrl
);
976 default: return NULL
;
980 /* Status A register : 0x00 (read-only) */
981 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
)
983 uint32_t retval
= fdctrl
->sra
;
985 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval
);
990 /* Status B register : 0x01 (read-only) */
991 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
)
993 uint32_t retval
= fdctrl
->srb
;
995 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval
);
1000 /* Digital output register : 0x02 */
1001 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
)
1003 uint32_t retval
= fdctrl
->dor
;
1005 /* Selected drive */
1006 retval
|= fdctrl
->cur_drv
;
1007 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval
);
1012 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
)
1014 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value
);
1017 if (value
& FD_DOR_MOTEN0
)
1018 fdctrl
->srb
|= FD_SRB_MTR0
;
1020 fdctrl
->srb
&= ~FD_SRB_MTR0
;
1021 if (value
& FD_DOR_MOTEN1
)
1022 fdctrl
->srb
|= FD_SRB_MTR1
;
1024 fdctrl
->srb
&= ~FD_SRB_MTR1
;
1028 fdctrl
->srb
|= FD_SRB_DR0
;
1030 fdctrl
->srb
&= ~FD_SRB_DR0
;
1033 if (!(value
& FD_DOR_nRESET
)) {
1034 if (fdctrl
->dor
& FD_DOR_nRESET
) {
1035 FLOPPY_DPRINTF("controller enter RESET state\n");
1038 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1039 FLOPPY_DPRINTF("controller out of RESET state\n");
1040 fdctrl_reset(fdctrl
, 1);
1041 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1044 /* Selected drive */
1045 fdctrl
->cur_drv
= value
& FD_DOR_SELMASK
;
1047 fdctrl
->dor
= value
;
1050 /* Tape drive register : 0x03 */
1051 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
)
1053 uint32_t retval
= fdctrl
->tdr
;
1055 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval
);
1060 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
)
1063 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1064 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1067 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value
);
1068 /* Disk boot selection indicator */
1069 fdctrl
->tdr
= value
& FD_TDR_BOOTSEL
;
1070 /* Tape indicators: never allow */
1073 /* Main status register : 0x04 (read) */
1074 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
)
1076 uint32_t retval
= fdctrl
->msr
;
1078 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1079 fdctrl
->dor
|= FD_DOR_nRESET
;
1081 /* Sparc mutation */
1082 if (fdctrl
->sun4m
) {
1083 retval
|= FD_MSR_DIO
;
1084 fdctrl_reset_irq(fdctrl
);
1087 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval
);
1092 /* Data select rate register : 0x04 (write) */
1093 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
)
1096 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1097 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1100 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value
);
1101 /* Reset: autoclear */
1102 if (value
& FD_DSR_SWRESET
) {
1103 fdctrl
->dor
&= ~FD_DOR_nRESET
;
1104 fdctrl_reset(fdctrl
, 1);
1105 fdctrl
->dor
|= FD_DOR_nRESET
;
1107 if (value
& FD_DSR_PWRDOWN
) {
1108 fdctrl_reset(fdctrl
, 1);
1110 fdctrl
->dsr
= value
;
1113 /* Configuration control register: 0x07 (write) */
1114 static void fdctrl_write_ccr(FDCtrl
*fdctrl
, uint32_t value
)
1117 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1118 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1121 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value
);
1123 /* Only the rate selection bits used in AT mode, and we
1124 * store those in the DSR.
1126 fdctrl
->dsr
= (fdctrl
->dsr
& ~FD_DSR_DRATEMASK
) |
1127 (value
& FD_DSR_DRATEMASK
);
1130 static int fdctrl_media_changed(FDrive
*drv
)
1132 return drv
->media_changed
;
1135 /* Digital input register : 0x07 (read-only) */
1136 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
)
1138 uint32_t retval
= 0;
1140 if (fdctrl_media_changed(get_cur_drv(fdctrl
))) {
1141 retval
|= FD_DIR_DSKCHG
;
1144 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval
);
1150 /* FIFO state control */
1151 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
)
1153 fdctrl
->data_dir
= FD_DIR_WRITE
;
1154 fdctrl
->data_pos
= 0;
1155 fdctrl
->msr
&= ~(FD_MSR_CMDBUSY
| FD_MSR_DIO
);
1158 /* Set FIFO status for the host to read */
1159 static void fdctrl_set_fifo(FDCtrl
*fdctrl
, int fifo_len
)
1161 fdctrl
->data_dir
= FD_DIR_READ
;
1162 fdctrl
->data_len
= fifo_len
;
1163 fdctrl
->data_pos
= 0;
1164 fdctrl
->msr
|= FD_MSR_CMDBUSY
| FD_MSR_RQM
| FD_MSR_DIO
;
1167 /* Set an error: unimplemented/unknown command */
1168 static void fdctrl_unimplemented(FDCtrl
*fdctrl
, int direction
)
1170 qemu_log_mask(LOG_UNIMP
, "fdc: unimplemented command 0x%02x\n",
1172 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
1173 fdctrl_set_fifo(fdctrl
, 1);
1176 /* Seek to next sector
1177 * returns 0 when end of track reached (for DBL_SIDES on head 1)
1178 * otherwise returns 1
1180 static int fdctrl_seek_to_next_sect(FDCtrl
*fdctrl
, FDrive
*cur_drv
)
1182 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1183 cur_drv
->head
, cur_drv
->track
, cur_drv
->sect
,
1184 fd_sector(cur_drv
));
1185 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1187 uint8_t new_head
= cur_drv
->head
;
1188 uint8_t new_track
= cur_drv
->track
;
1189 uint8_t new_sect
= cur_drv
->sect
;
1193 if (new_sect
>= cur_drv
->last_sect
||
1194 new_sect
== fdctrl
->eot
) {
1196 if (FD_MULTI_TRACK(fdctrl
->data_state
)) {
1197 if (new_head
== 0 &&
1198 (cur_drv
->flags
& FDISK_DBL_SIDES
) != 0) {
1203 fdctrl
->status0
|= FD_SR0_SEEK
;
1204 if ((cur_drv
->flags
& FDISK_DBL_SIDES
) == 0) {
1209 fdctrl
->status0
|= FD_SR0_SEEK
;
1214 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1215 new_head
, new_track
, new_sect
, fd_sector(cur_drv
));
1220 fd_seek(cur_drv
, new_head
, new_track
, new_sect
, 1);
1224 /* Callback for transfer end (stop or abort) */
1225 static void fdctrl_stop_transfer(FDCtrl
*fdctrl
, uint8_t status0
,
1226 uint8_t status1
, uint8_t status2
)
1229 cur_drv
= get_cur_drv(fdctrl
);
1231 fdctrl
->status0
&= ~(FD_SR0_DS0
| FD_SR0_DS1
| FD_SR0_HEAD
);
1232 fdctrl
->status0
|= GET_CUR_DRV(fdctrl
);
1233 if (cur_drv
->head
) {
1234 fdctrl
->status0
|= FD_SR0_HEAD
;
1236 fdctrl
->status0
|= status0
;
1238 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1239 status0
, status1
, status2
, fdctrl
->status0
);
1240 fdctrl
->fifo
[0] = fdctrl
->status0
;
1241 fdctrl
->fifo
[1] = status1
;
1242 fdctrl
->fifo
[2] = status2
;
1243 fdctrl
->fifo
[3] = cur_drv
->track
;
1244 fdctrl
->fifo
[4] = cur_drv
->head
;
1245 fdctrl
->fifo
[5] = cur_drv
->sect
;
1246 fdctrl
->fifo
[6] = FD_SECTOR_SC
;
1247 fdctrl
->data_dir
= FD_DIR_READ
;
1248 if (!(fdctrl
->msr
& FD_MSR_NONDMA
)) {
1249 DMA_release_DREQ(fdctrl
->dma_chann
);
1251 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
1252 fdctrl
->msr
&= ~FD_MSR_NONDMA
;
1254 fdctrl_set_fifo(fdctrl
, 7);
1255 fdctrl_raise_irq(fdctrl
);
1258 /* Prepare a data transfer (either DMA or FIFO) */
1259 static void fdctrl_start_transfer(FDCtrl
*fdctrl
, int direction
)
1264 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1265 cur_drv
= get_cur_drv(fdctrl
);
1266 kt
= fdctrl
->fifo
[2];
1267 kh
= fdctrl
->fifo
[3];
1268 ks
= fdctrl
->fifo
[4];
1269 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1270 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1271 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1272 NUM_SIDES(cur_drv
)));
1273 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1276 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1277 fdctrl
->fifo
[3] = kt
;
1278 fdctrl
->fifo
[4] = kh
;
1279 fdctrl
->fifo
[5] = ks
;
1283 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1284 fdctrl
->fifo
[3] = kt
;
1285 fdctrl
->fifo
[4] = kh
;
1286 fdctrl
->fifo
[5] = ks
;
1289 /* No seek enabled */
1290 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1291 fdctrl
->fifo
[3] = kt
;
1292 fdctrl
->fifo
[4] = kh
;
1293 fdctrl
->fifo
[5] = ks
;
1296 fdctrl
->status0
|= FD_SR0_SEEK
;
1302 /* Check the data rate. If the programmed data rate does not match
1303 * the currently inserted medium, the operation has to fail. */
1304 if (fdctrl
->check_media_rate
&&
1305 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
1306 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1307 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
1308 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
1309 fdctrl
->fifo
[3] = kt
;
1310 fdctrl
->fifo
[4] = kh
;
1311 fdctrl
->fifo
[5] = ks
;
1315 /* Set the FIFO state */
1316 fdctrl
->data_dir
= direction
;
1317 fdctrl
->data_pos
= 0;
1318 assert(fdctrl
->msr
& FD_MSR_CMDBUSY
);
1319 if (fdctrl
->fifo
[0] & 0x80)
1320 fdctrl
->data_state
|= FD_STATE_MULTI
;
1322 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1323 if (fdctrl
->fifo
[5] == 0) {
1324 fdctrl
->data_len
= fdctrl
->fifo
[8];
1327 fdctrl
->data_len
= 128 << (fdctrl
->fifo
[5] > 7 ? 7 : fdctrl
->fifo
[5]);
1328 tmp
= (fdctrl
->fifo
[6] - ks
+ 1);
1329 if (fdctrl
->fifo
[0] & 0x80)
1330 tmp
+= fdctrl
->fifo
[6];
1331 fdctrl
->data_len
*= tmp
;
1333 fdctrl
->eot
= fdctrl
->fifo
[6];
1334 if (fdctrl
->dor
& FD_DOR_DMAEN
) {
1336 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1337 dma_mode
= DMA_get_channel_mode(fdctrl
->dma_chann
);
1338 dma_mode
= (dma_mode
>> 2) & 3;
1339 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1340 dma_mode
, direction
,
1341 (128 << fdctrl
->fifo
[5]) *
1342 (cur_drv
->last_sect
- ks
+ 1), fdctrl
->data_len
);
1343 if (((direction
== FD_DIR_SCANE
|| direction
== FD_DIR_SCANL
||
1344 direction
== FD_DIR_SCANH
) && dma_mode
== 0) ||
1345 (direction
== FD_DIR_WRITE
&& dma_mode
== 2) ||
1346 (direction
== FD_DIR_READ
&& dma_mode
== 1) ||
1347 (direction
== FD_DIR_VERIFY
)) {
1348 /* No access is allowed until DMA transfer has completed */
1349 fdctrl
->msr
&= ~FD_MSR_RQM
;
1350 if (direction
!= FD_DIR_VERIFY
) {
1351 /* Now, we just have to wait for the DMA controller to
1354 DMA_hold_DREQ(fdctrl
->dma_chann
);
1355 DMA_schedule(fdctrl
->dma_chann
);
1357 /* Start transfer */
1358 fdctrl_transfer_handler(fdctrl
, fdctrl
->dma_chann
, 0,
1363 FLOPPY_DPRINTF("bad dma_mode=%d direction=%d\n", dma_mode
,
1367 FLOPPY_DPRINTF("start non-DMA transfer\n");
1368 fdctrl
->msr
|= FD_MSR_NONDMA
;
1369 if (direction
!= FD_DIR_WRITE
)
1370 fdctrl
->msr
|= FD_MSR_DIO
;
1371 /* IO based transfer: calculate len */
1372 fdctrl_raise_irq(fdctrl
);
1375 /* Prepare a transfer of deleted data */
1376 static void fdctrl_start_transfer_del(FDCtrl
*fdctrl
, int direction
)
1378 qemu_log_mask(LOG_UNIMP
, "fdctrl_start_transfer_del() unimplemented\n");
1380 /* We don't handle deleted data,
1381 * so we don't return *ANYTHING*
1383 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1386 /* handlers for DMA transfers */
1387 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
1388 int dma_pos
, int dma_len
)
1392 int len
, start_pos
, rel_pos
;
1393 uint8_t status0
= 0x00, status1
= 0x00, status2
= 0x00;
1396 if (fdctrl
->msr
& FD_MSR_RQM
) {
1397 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1400 cur_drv
= get_cur_drv(fdctrl
);
1401 if (fdctrl
->data_dir
== FD_DIR_SCANE
|| fdctrl
->data_dir
== FD_DIR_SCANL
||
1402 fdctrl
->data_dir
== FD_DIR_SCANH
)
1403 status2
= FD_SR2_SNS
;
1404 if (dma_len
> fdctrl
->data_len
)
1405 dma_len
= fdctrl
->data_len
;
1406 if (cur_drv
->bs
== NULL
) {
1407 if (fdctrl
->data_dir
== FD_DIR_WRITE
)
1408 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1410 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1412 goto transfer_error
;
1414 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1415 for (start_pos
= fdctrl
->data_pos
; fdctrl
->data_pos
< dma_len
;) {
1416 len
= dma_len
- fdctrl
->data_pos
;
1417 if (len
+ rel_pos
> FD_SECTOR_LEN
)
1418 len
= FD_SECTOR_LEN
- rel_pos
;
1419 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1420 "(%d-0x%08x 0x%08x)\n", len
, dma_len
, fdctrl
->data_pos
,
1421 fdctrl
->data_len
, GET_CUR_DRV(fdctrl
), cur_drv
->head
,
1422 cur_drv
->track
, cur_drv
->sect
, fd_sector(cur_drv
),
1423 fd_sector(cur_drv
) * FD_SECTOR_LEN
);
1424 if (fdctrl
->data_dir
!= FD_DIR_WRITE
||
1425 len
< FD_SECTOR_LEN
|| rel_pos
!= 0) {
1426 /* READ & SCAN commands and realign to a sector for WRITE */
1427 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
),
1428 fdctrl
->fifo
, 1) < 0) {
1429 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1430 fd_sector(cur_drv
));
1431 /* Sure, image size is too small... */
1432 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1435 switch (fdctrl
->data_dir
) {
1438 DMA_write_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1439 fdctrl
->data_pos
, len
);
1442 /* WRITE commands */
1444 /* Handle readonly medium early, no need to do DMA, touch the
1445 * LED or attempt any writes. A real floppy doesn't attempt
1446 * to write to readonly media either. */
1447 fdctrl_stop_transfer(fdctrl
,
1448 FD_SR0_ABNTERM
| FD_SR0_SEEK
, FD_SR1_NW
,
1450 goto transfer_error
;
1453 DMA_read_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1454 fdctrl
->data_pos
, len
);
1455 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
),
1456 fdctrl
->fifo
, 1) < 0) {
1457 FLOPPY_DPRINTF("error writing sector %d\n",
1458 fd_sector(cur_drv
));
1459 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1460 goto transfer_error
;
1464 /* VERIFY commands */
1469 uint8_t tmpbuf
[FD_SECTOR_LEN
];
1471 DMA_read_memory (nchan
, tmpbuf
, fdctrl
->data_pos
, len
);
1472 ret
= memcmp(tmpbuf
, fdctrl
->fifo
+ rel_pos
, len
);
1474 status2
= FD_SR2_SEH
;
1477 if ((ret
< 0 && fdctrl
->data_dir
== FD_DIR_SCANL
) ||
1478 (ret
> 0 && fdctrl
->data_dir
== FD_DIR_SCANH
)) {
1485 fdctrl
->data_pos
+= len
;
1486 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1488 /* Seek to next sector */
1489 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
))
1494 len
= fdctrl
->data_pos
- start_pos
;
1495 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1496 fdctrl
->data_pos
, len
, fdctrl
->data_len
);
1497 if (fdctrl
->data_dir
== FD_DIR_SCANE
||
1498 fdctrl
->data_dir
== FD_DIR_SCANL
||
1499 fdctrl
->data_dir
== FD_DIR_SCANH
)
1500 status2
= FD_SR2_SEH
;
1501 fdctrl
->data_len
-= len
;
1502 fdctrl_stop_transfer(fdctrl
, status0
, status1
, status2
);
1508 /* Data register : 0x05 */
1509 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
)
1512 uint32_t retval
= 0;
1515 cur_drv
= get_cur_drv(fdctrl
);
1516 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1517 if (!(fdctrl
->msr
& FD_MSR_RQM
) || !(fdctrl
->msr
& FD_MSR_DIO
)) {
1518 FLOPPY_DPRINTF("error: controller not ready for reading\n");
1521 pos
= fdctrl
->data_pos
;
1522 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1523 pos
%= FD_SECTOR_LEN
;
1525 if (fdctrl
->data_pos
!= 0)
1526 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1527 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1528 fd_sector(cur_drv
));
1531 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1532 FLOPPY_DPRINTF("error getting sector %d\n",
1533 fd_sector(cur_drv
));
1534 /* Sure, image size is too small... */
1535 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1539 retval
= fdctrl
->fifo
[pos
];
1540 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1541 fdctrl
->data_pos
= 0;
1542 /* Switch from transfer mode to status mode
1543 * then from status mode to command mode
1545 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1546 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1548 fdctrl_reset_fifo(fdctrl
);
1549 fdctrl_reset_irq(fdctrl
);
1552 FLOPPY_DPRINTF("data register: 0x%02x\n", retval
);
1557 static void fdctrl_format_sector(FDCtrl
*fdctrl
)
1562 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1563 cur_drv
= get_cur_drv(fdctrl
);
1564 kt
= fdctrl
->fifo
[6];
1565 kh
= fdctrl
->fifo
[7];
1566 ks
= fdctrl
->fifo
[8];
1567 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1568 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1569 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1570 NUM_SIDES(cur_drv
)));
1571 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1574 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1575 fdctrl
->fifo
[3] = kt
;
1576 fdctrl
->fifo
[4] = kh
;
1577 fdctrl
->fifo
[5] = ks
;
1581 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1582 fdctrl
->fifo
[3] = kt
;
1583 fdctrl
->fifo
[4] = kh
;
1584 fdctrl
->fifo
[5] = ks
;
1587 /* No seek enabled */
1588 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1589 fdctrl
->fifo
[3] = kt
;
1590 fdctrl
->fifo
[4] = kh
;
1591 fdctrl
->fifo
[5] = ks
;
1594 fdctrl
->status0
|= FD_SR0_SEEK
;
1599 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1600 if (cur_drv
->bs
== NULL
||
1601 bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1602 FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv
));
1603 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1605 if (cur_drv
->sect
== cur_drv
->last_sect
) {
1606 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1607 /* Last sector done */
1608 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1611 fdctrl
->data_pos
= 0;
1612 fdctrl
->data_len
= 4;
1617 static void fdctrl_handle_lock(FDCtrl
*fdctrl
, int direction
)
1619 fdctrl
->lock
= (fdctrl
->fifo
[0] & 0x80) ? 1 : 0;
1620 fdctrl
->fifo
[0] = fdctrl
->lock
<< 4;
1621 fdctrl_set_fifo(fdctrl
, 1);
1624 static void fdctrl_handle_dumpreg(FDCtrl
*fdctrl
, int direction
)
1626 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1628 /* Drives position */
1629 fdctrl
->fifo
[0] = drv0(fdctrl
)->track
;
1630 fdctrl
->fifo
[1] = drv1(fdctrl
)->track
;
1632 fdctrl
->fifo
[2] = drv2(fdctrl
)->track
;
1633 fdctrl
->fifo
[3] = drv3(fdctrl
)->track
;
1635 fdctrl
->fifo
[2] = 0;
1636 fdctrl
->fifo
[3] = 0;
1639 fdctrl
->fifo
[4] = fdctrl
->timer0
;
1640 fdctrl
->fifo
[5] = (fdctrl
->timer1
<< 1) | (fdctrl
->dor
& FD_DOR_DMAEN
? 1 : 0);
1641 fdctrl
->fifo
[6] = cur_drv
->last_sect
;
1642 fdctrl
->fifo
[7] = (fdctrl
->lock
<< 7) |
1643 (cur_drv
->perpendicular
<< 2);
1644 fdctrl
->fifo
[8] = fdctrl
->config
;
1645 fdctrl
->fifo
[9] = fdctrl
->precomp_trk
;
1646 fdctrl_set_fifo(fdctrl
, 10);
1649 static void fdctrl_handle_version(FDCtrl
*fdctrl
, int direction
)
1651 /* Controller's version */
1652 fdctrl
->fifo
[0] = fdctrl
->version
;
1653 fdctrl_set_fifo(fdctrl
, 1);
1656 static void fdctrl_handle_partid(FDCtrl
*fdctrl
, int direction
)
1658 fdctrl
->fifo
[0] = 0x41; /* Stepping 1 */
1659 fdctrl_set_fifo(fdctrl
, 1);
1662 static void fdctrl_handle_restore(FDCtrl
*fdctrl
, int direction
)
1664 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1666 /* Drives position */
1667 drv0(fdctrl
)->track
= fdctrl
->fifo
[3];
1668 drv1(fdctrl
)->track
= fdctrl
->fifo
[4];
1670 drv2(fdctrl
)->track
= fdctrl
->fifo
[5];
1671 drv3(fdctrl
)->track
= fdctrl
->fifo
[6];
1674 fdctrl
->timer0
= fdctrl
->fifo
[7];
1675 fdctrl
->timer1
= fdctrl
->fifo
[8];
1676 cur_drv
->last_sect
= fdctrl
->fifo
[9];
1677 fdctrl
->lock
= fdctrl
->fifo
[10] >> 7;
1678 cur_drv
->perpendicular
= (fdctrl
->fifo
[10] >> 2) & 0xF;
1679 fdctrl
->config
= fdctrl
->fifo
[11];
1680 fdctrl
->precomp_trk
= fdctrl
->fifo
[12];
1681 fdctrl
->pwrd
= fdctrl
->fifo
[13];
1682 fdctrl_reset_fifo(fdctrl
);
1685 static void fdctrl_handle_save(FDCtrl
*fdctrl
, int direction
)
1687 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1689 fdctrl
->fifo
[0] = 0;
1690 fdctrl
->fifo
[1] = 0;
1691 /* Drives position */
1692 fdctrl
->fifo
[2] = drv0(fdctrl
)->track
;
1693 fdctrl
->fifo
[3] = drv1(fdctrl
)->track
;
1695 fdctrl
->fifo
[4] = drv2(fdctrl
)->track
;
1696 fdctrl
->fifo
[5] = drv3(fdctrl
)->track
;
1698 fdctrl
->fifo
[4] = 0;
1699 fdctrl
->fifo
[5] = 0;
1702 fdctrl
->fifo
[6] = fdctrl
->timer0
;
1703 fdctrl
->fifo
[7] = fdctrl
->timer1
;
1704 fdctrl
->fifo
[8] = cur_drv
->last_sect
;
1705 fdctrl
->fifo
[9] = (fdctrl
->lock
<< 7) |
1706 (cur_drv
->perpendicular
<< 2);
1707 fdctrl
->fifo
[10] = fdctrl
->config
;
1708 fdctrl
->fifo
[11] = fdctrl
->precomp_trk
;
1709 fdctrl
->fifo
[12] = fdctrl
->pwrd
;
1710 fdctrl
->fifo
[13] = 0;
1711 fdctrl
->fifo
[14] = 0;
1712 fdctrl_set_fifo(fdctrl
, 15);
1715 static void fdctrl_handle_readid(FDCtrl
*fdctrl
, int direction
)
1717 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1719 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1720 timer_mod(fdctrl
->result_timer
,
1721 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) + (get_ticks_per_sec() / 50));
1724 static void fdctrl_handle_format_track(FDCtrl
*fdctrl
, int direction
)
1728 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1729 cur_drv
= get_cur_drv(fdctrl
);
1730 fdctrl
->data_state
|= FD_STATE_FORMAT
;
1731 if (fdctrl
->fifo
[0] & 0x80)
1732 fdctrl
->data_state
|= FD_STATE_MULTI
;
1734 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1736 fdctrl
->fifo
[2] > 7 ? 16384 : 128 << fdctrl
->fifo
[2];
1738 cur_drv
->last_sect
=
1739 cur_drv
->flags
& FDISK_DBL_SIDES
? fdctrl
->fifo
[3] :
1740 fdctrl
->fifo
[3] / 2;
1742 cur_drv
->last_sect
= fdctrl
->fifo
[3];
1744 /* TODO: implement format using DMA expected by the Bochs BIOS
1745 * and Linux fdformat (read 3 bytes per sector via DMA and fill
1746 * the sector with the specified fill byte
1748 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1749 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1752 static void fdctrl_handle_specify(FDCtrl
*fdctrl
, int direction
)
1754 fdctrl
->timer0
= (fdctrl
->fifo
[1] >> 4) & 0xF;
1755 fdctrl
->timer1
= fdctrl
->fifo
[2] >> 1;
1756 if (fdctrl
->fifo
[2] & 1)
1757 fdctrl
->dor
&= ~FD_DOR_DMAEN
;
1759 fdctrl
->dor
|= FD_DOR_DMAEN
;
1760 /* No result back */
1761 fdctrl_reset_fifo(fdctrl
);
1764 static void fdctrl_handle_sense_drive_status(FDCtrl
*fdctrl
, int direction
)
1768 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1769 cur_drv
= get_cur_drv(fdctrl
);
1770 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1771 /* 1 Byte status back */
1772 fdctrl
->fifo
[0] = (cur_drv
->ro
<< 6) |
1773 (cur_drv
->track
== 0 ? 0x10 : 0x00) |
1774 (cur_drv
->head
<< 2) |
1775 GET_CUR_DRV(fdctrl
) |
1777 fdctrl_set_fifo(fdctrl
, 1);
1780 static void fdctrl_handle_recalibrate(FDCtrl
*fdctrl
, int direction
)
1784 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1785 cur_drv
= get_cur_drv(fdctrl
);
1786 fd_recalibrate(cur_drv
);
1787 fdctrl_reset_fifo(fdctrl
);
1788 /* Raise Interrupt */
1789 fdctrl
->status0
|= FD_SR0_SEEK
;
1790 fdctrl_raise_irq(fdctrl
);
1793 static void fdctrl_handle_sense_interrupt_status(FDCtrl
*fdctrl
, int direction
)
1795 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1797 if (fdctrl
->reset_sensei
> 0) {
1799 FD_SR0_RDYCHG
+ FD_RESET_SENSEI_COUNT
- fdctrl
->reset_sensei
;
1800 fdctrl
->reset_sensei
--;
1801 } else if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
1802 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
1803 fdctrl_set_fifo(fdctrl
, 1);
1807 (fdctrl
->status0
& ~(FD_SR0_HEAD
| FD_SR0_DS1
| FD_SR0_DS0
))
1808 | GET_CUR_DRV(fdctrl
);
1811 fdctrl
->fifo
[1] = cur_drv
->track
;
1812 fdctrl_set_fifo(fdctrl
, 2);
1813 fdctrl_reset_irq(fdctrl
);
1814 fdctrl
->status0
= FD_SR0_RDYCHG
;
1817 static void fdctrl_handle_seek(FDCtrl
*fdctrl
, int direction
)
1821 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1822 cur_drv
= get_cur_drv(fdctrl
);
1823 fdctrl_reset_fifo(fdctrl
);
1824 /* The seek command just sends step pulses to the drive and doesn't care if
1825 * there is a medium inserted of if it's banging the head against the drive.
1827 fd_seek(cur_drv
, cur_drv
->head
, fdctrl
->fifo
[2], cur_drv
->sect
, 1);
1828 /* Raise Interrupt */
1829 fdctrl
->status0
|= FD_SR0_SEEK
;
1830 fdctrl_raise_irq(fdctrl
);
1833 static void fdctrl_handle_perpendicular_mode(FDCtrl
*fdctrl
, int direction
)
1835 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1837 if (fdctrl
->fifo
[1] & 0x80)
1838 cur_drv
->perpendicular
= fdctrl
->fifo
[1] & 0x7;
1839 /* No result back */
1840 fdctrl_reset_fifo(fdctrl
);
1843 static void fdctrl_handle_configure(FDCtrl
*fdctrl
, int direction
)
1845 fdctrl
->config
= fdctrl
->fifo
[2];
1846 fdctrl
->precomp_trk
= fdctrl
->fifo
[3];
1847 /* No result back */
1848 fdctrl_reset_fifo(fdctrl
);
1851 static void fdctrl_handle_powerdown_mode(FDCtrl
*fdctrl
, int direction
)
1853 fdctrl
->pwrd
= fdctrl
->fifo
[1];
1854 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1855 fdctrl_set_fifo(fdctrl
, 1);
1858 static void fdctrl_handle_option(FDCtrl
*fdctrl
, int direction
)
1860 /* No result back */
1861 fdctrl_reset_fifo(fdctrl
);
1864 static void fdctrl_handle_drive_specification_command(FDCtrl
*fdctrl
, int direction
)
1866 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1868 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x80) {
1869 /* Command parameters done */
1870 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x40) {
1871 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1872 fdctrl
->fifo
[2] = 0;
1873 fdctrl
->fifo
[3] = 0;
1874 fdctrl_set_fifo(fdctrl
, 4);
1876 fdctrl_reset_fifo(fdctrl
);
1878 } else if (fdctrl
->data_len
> 7) {
1880 fdctrl
->fifo
[0] = 0x80 |
1881 (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1882 fdctrl_set_fifo(fdctrl
, 1);
1886 static void fdctrl_handle_relative_seek_in(FDCtrl
*fdctrl
, int direction
)
1890 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1891 cur_drv
= get_cur_drv(fdctrl
);
1892 if (fdctrl
->fifo
[2] + cur_drv
->track
>= cur_drv
->max_track
) {
1893 fd_seek(cur_drv
, cur_drv
->head
, cur_drv
->max_track
- 1,
1896 fd_seek(cur_drv
, cur_drv
->head
,
1897 cur_drv
->track
+ fdctrl
->fifo
[2], cur_drv
->sect
, 1);
1899 fdctrl_reset_fifo(fdctrl
);
1900 /* Raise Interrupt */
1901 fdctrl
->status0
|= FD_SR0_SEEK
;
1902 fdctrl_raise_irq(fdctrl
);
1905 static void fdctrl_handle_relative_seek_out(FDCtrl
*fdctrl
, int direction
)
1909 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1910 cur_drv
= get_cur_drv(fdctrl
);
1911 if (fdctrl
->fifo
[2] > cur_drv
->track
) {
1912 fd_seek(cur_drv
, cur_drv
->head
, 0, cur_drv
->sect
, 1);
1914 fd_seek(cur_drv
, cur_drv
->head
,
1915 cur_drv
->track
- fdctrl
->fifo
[2], cur_drv
->sect
, 1);
1917 fdctrl_reset_fifo(fdctrl
);
1918 /* Raise Interrupt */
1919 fdctrl
->status0
|= FD_SR0_SEEK
;
1920 fdctrl_raise_irq(fdctrl
);
1923 static const struct {
1928 void (*handler
)(FDCtrl
*fdctrl
, int direction
);
1931 { FD_CMD_READ
, 0x1f, "READ", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1932 { FD_CMD_WRITE
, 0x3f, "WRITE", 8, fdctrl_start_transfer
, FD_DIR_WRITE
},
1933 { FD_CMD_SEEK
, 0xff, "SEEK", 2, fdctrl_handle_seek
},
1934 { FD_CMD_SENSE_INTERRUPT_STATUS
, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status
},
1935 { FD_CMD_RECALIBRATE
, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate
},
1936 { FD_CMD_FORMAT_TRACK
, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track
},
1937 { FD_CMD_READ_TRACK
, 0xbf, "READ TRACK", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1938 { FD_CMD_RESTORE
, 0xff, "RESTORE", 17, fdctrl_handle_restore
}, /* part of READ DELETED DATA */
1939 { FD_CMD_SAVE
, 0xff, "SAVE", 0, fdctrl_handle_save
}, /* part of READ DELETED DATA */
1940 { FD_CMD_READ_DELETED
, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_READ
},
1941 { FD_CMD_SCAN_EQUAL
, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANE
},
1942 { FD_CMD_VERIFY
, 0x1f, "VERIFY", 8, fdctrl_start_transfer
, FD_DIR_VERIFY
},
1943 { FD_CMD_SCAN_LOW_OR_EQUAL
, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANL
},
1944 { FD_CMD_SCAN_HIGH_OR_EQUAL
, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANH
},
1945 { FD_CMD_WRITE_DELETED
, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_WRITE
},
1946 { FD_CMD_READ_ID
, 0xbf, "READ ID", 1, fdctrl_handle_readid
},
1947 { FD_CMD_SPECIFY
, 0xff, "SPECIFY", 2, fdctrl_handle_specify
},
1948 { FD_CMD_SENSE_DRIVE_STATUS
, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status
},
1949 { FD_CMD_PERPENDICULAR_MODE
, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode
},
1950 { FD_CMD_CONFIGURE
, 0xff, "CONFIGURE", 3, fdctrl_handle_configure
},
1951 { FD_CMD_POWERDOWN_MODE
, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode
},
1952 { FD_CMD_OPTION
, 0xff, "OPTION", 1, fdctrl_handle_option
},
1953 { FD_CMD_DRIVE_SPECIFICATION_COMMAND
, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command
},
1954 { FD_CMD_RELATIVE_SEEK_OUT
, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out
},
1955 { FD_CMD_FORMAT_AND_WRITE
, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented
},
1956 { FD_CMD_RELATIVE_SEEK_IN
, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in
},
1957 { FD_CMD_LOCK
, 0x7f, "LOCK", 0, fdctrl_handle_lock
},
1958 { FD_CMD_DUMPREG
, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg
},
1959 { FD_CMD_VERSION
, 0xff, "VERSION", 0, fdctrl_handle_version
},
1960 { FD_CMD_PART_ID
, 0xff, "PART ID", 0, fdctrl_handle_partid
},
1961 { FD_CMD_WRITE
, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer
, FD_DIR_WRITE
}, /* not in specification ; BeOS 4.5 bug */
1962 { 0, 0, "unknown", 0, fdctrl_unimplemented
}, /* default handler */
1964 /* Associate command to an index in the 'handlers' array */
1965 static uint8_t command_to_handler
[256];
1967 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
)
1973 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1974 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1977 if (!(fdctrl
->msr
& FD_MSR_RQM
) || (fdctrl
->msr
& FD_MSR_DIO
)) {
1978 FLOPPY_DPRINTF("error: controller not ready for writing\n");
1981 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1982 /* Is it write command time ? */
1983 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1984 /* FIFO data write */
1985 pos
= fdctrl
->data_pos
++;
1986 pos
%= FD_SECTOR_LEN
;
1987 fdctrl
->fifo
[pos
] = value
;
1988 if (pos
== FD_SECTOR_LEN
- 1 ||
1989 fdctrl
->data_pos
== fdctrl
->data_len
) {
1990 cur_drv
= get_cur_drv(fdctrl
);
1991 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1992 FLOPPY_DPRINTF("error writing sector %d\n",
1993 fd_sector(cur_drv
));
1996 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1997 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1998 fd_sector(cur_drv
));
2002 /* Switch from transfer mode to status mode
2003 * then from status mode to command mode
2005 if (fdctrl
->data_pos
== fdctrl
->data_len
)
2006 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2009 if (fdctrl
->data_pos
== 0) {
2011 pos
= command_to_handler
[value
& 0xff];
2012 FLOPPY_DPRINTF("%s command\n", handlers
[pos
].name
);
2013 fdctrl
->data_len
= handlers
[pos
].parameters
+ 1;
2014 fdctrl
->msr
|= FD_MSR_CMDBUSY
;
2017 FLOPPY_DPRINTF("%s: %02x\n", __func__
, value
);
2018 fdctrl
->fifo
[fdctrl
->data_pos
++] = value
;
2019 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
2020 /* We now have all parameters
2021 * and will be able to treat the command
2023 if (fdctrl
->data_state
& FD_STATE_FORMAT
) {
2024 fdctrl_format_sector(fdctrl
);
2028 pos
= command_to_handler
[fdctrl
->fifo
[0] & 0xff];
2029 FLOPPY_DPRINTF("treat %s command\n", handlers
[pos
].name
);
2030 (*handlers
[pos
].handler
)(fdctrl
, handlers
[pos
].direction
);
2034 static void fdctrl_result_timer(void *opaque
)
2036 FDCtrl
*fdctrl
= opaque
;
2037 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
2039 /* Pretend we are spinning.
2040 * This is needed for Coherent, which uses READ ID to check for
2041 * sector interleaving.
2043 if (cur_drv
->last_sect
!= 0) {
2044 cur_drv
->sect
= (cur_drv
->sect
% cur_drv
->last_sect
) + 1;
2046 /* READ_ID can't automatically succeed! */
2047 if (fdctrl
->check_media_rate
&&
2048 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
2049 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
2050 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
2051 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
2053 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
2057 static void fdctrl_change_cb(void *opaque
, bool load
)
2059 FDrive
*drive
= opaque
;
2061 drive
->media_changed
= 1;
2062 fd_revalidate(drive
);
2065 static const BlockDevOps fdctrl_block_ops
= {
2066 .change_media_cb
= fdctrl_change_cb
,
2069 /* Init functions */
2070 static void fdctrl_connect_drives(FDCtrl
*fdctrl
, Error
**errp
)
2075 for (i
= 0; i
< MAX_FD
; i
++) {
2076 drive
= &fdctrl
->drives
[i
];
2077 drive
->fdctrl
= fdctrl
;
2080 if (bdrv_get_on_error(drive
->bs
, 0) != BLOCKDEV_ON_ERROR_ENOSPC
) {
2081 error_setg(errp
, "fdc doesn't support drive option werror");
2084 if (bdrv_get_on_error(drive
->bs
, 1) != BLOCKDEV_ON_ERROR_REPORT
) {
2085 error_setg(errp
, "fdc doesn't support drive option rerror");
2091 fdctrl_change_cb(drive
, 0);
2093 bdrv_set_dev_ops(drive
->bs
, &fdctrl_block_ops
, drive
);
2098 ISADevice
*fdctrl_init_isa(ISABus
*bus
, DriveInfo
**fds
)
2103 isadev
= isa_try_create(bus
, TYPE_ISA_FDC
);
2107 dev
= DEVICE(isadev
);
2110 qdev_prop_set_drive_nofail(dev
, "driveA", fds
[0]->bdrv
);
2113 qdev_prop_set_drive_nofail(dev
, "driveB", fds
[1]->bdrv
);
2115 qdev_init_nofail(dev
);
2120 void fdctrl_init_sysbus(qemu_irq irq
, int dma_chann
,
2121 hwaddr mmio_base
, DriveInfo
**fds
)
2128 dev
= qdev_create(NULL
, "sysbus-fdc");
2129 sys
= SYSBUS_FDC(dev
);
2130 fdctrl
= &sys
->state
;
2131 fdctrl
->dma_chann
= dma_chann
; /* FIXME */
2133 qdev_prop_set_drive_nofail(dev
, "driveA", fds
[0]->bdrv
);
2136 qdev_prop_set_drive_nofail(dev
, "driveB", fds
[1]->bdrv
);
2138 qdev_init_nofail(dev
);
2139 sbd
= SYS_BUS_DEVICE(dev
);
2140 sysbus_connect_irq(sbd
, 0, irq
);
2141 sysbus_mmio_map(sbd
, 0, mmio_base
);
2144 void sun4m_fdctrl_init(qemu_irq irq
, hwaddr io_base
,
2145 DriveInfo
**fds
, qemu_irq
*fdc_tc
)
2150 dev
= qdev_create(NULL
, "SUNW,fdtwo");
2152 qdev_prop_set_drive_nofail(dev
, "drive", fds
[0]->bdrv
);
2154 qdev_init_nofail(dev
);
2155 sys
= SYSBUS_FDC(dev
);
2156 sysbus_connect_irq(SYS_BUS_DEVICE(sys
), 0, irq
);
2157 sysbus_mmio_map(SYS_BUS_DEVICE(sys
), 0, io_base
);
2158 *fdc_tc
= qdev_get_gpio_in(dev
, 0);
2161 static void fdctrl_realize_common(FDCtrl
*fdctrl
, Error
**errp
)
2164 static int command_tables_inited
= 0;
2166 /* Fill 'command_to_handler' lookup table */
2167 if (!command_tables_inited
) {
2168 command_tables_inited
= 1;
2169 for (i
= ARRAY_SIZE(handlers
) - 1; i
>= 0; i
--) {
2170 for (j
= 0; j
< sizeof(command_to_handler
); j
++) {
2171 if ((j
& handlers
[i
].mask
) == handlers
[i
].value
) {
2172 command_to_handler
[j
] = i
;
2178 FLOPPY_DPRINTF("init controller\n");
2179 fdctrl
->fifo
= qemu_memalign(512, FD_SECTOR_LEN
);
2180 fdctrl
->fifo_size
= 512;
2181 fdctrl
->result_timer
= timer_new_ns(QEMU_CLOCK_VIRTUAL
,
2182 fdctrl_result_timer
, fdctrl
);
2184 fdctrl
->version
= 0x90; /* Intel 82078 controller */
2185 fdctrl
->config
= FD_CONFIG_EIS
| FD_CONFIG_EFIFO
; /* Implicit seek, polling & FIFO enabled */
2186 fdctrl
->num_floppies
= MAX_FD
;
2188 if (fdctrl
->dma_chann
!= -1) {
2189 DMA_register_channel(fdctrl
->dma_chann
, &fdctrl_transfer_handler
, fdctrl
);
2191 fdctrl_connect_drives(fdctrl
, errp
);
2194 static const MemoryRegionPortio fdc_portio_list
[] = {
2195 { 1, 5, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
2196 { 7, 1, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
2197 PORTIO_END_OF_LIST(),
2200 static void isabus_fdc_realize(DeviceState
*dev
, Error
**errp
)
2202 ISADevice
*isadev
= ISA_DEVICE(dev
);
2203 FDCtrlISABus
*isa
= ISA_FDC(dev
);
2204 FDCtrl
*fdctrl
= &isa
->state
;
2207 isa_register_portio_list(isadev
, isa
->iobase
, fdc_portio_list
, fdctrl
,
2210 isa_init_irq(isadev
, &fdctrl
->irq
, isa
->irq
);
2211 fdctrl
->dma_chann
= isa
->dma
;
2213 qdev_set_legacy_instance_id(dev
, isa
->iobase
, 2);
2214 fdctrl_realize_common(fdctrl
, &err
);
2216 error_propagate(errp
, err
);
2220 add_boot_device_path(isa
->bootindexA
, dev
, "/floppy@0");
2221 add_boot_device_path(isa
->bootindexB
, dev
, "/floppy@1");
2224 static void sysbus_fdc_initfn(Object
*obj
)
2226 SysBusDevice
*sbd
= SYS_BUS_DEVICE(obj
);
2227 FDCtrlSysBus
*sys
= SYSBUS_FDC(obj
);
2228 FDCtrl
*fdctrl
= &sys
->state
;
2230 fdctrl
->dma_chann
= -1;
2232 memory_region_init_io(&fdctrl
->iomem
, obj
, &fdctrl_mem_ops
, fdctrl
,
2234 sysbus_init_mmio(sbd
, &fdctrl
->iomem
);
2237 static void sun4m_fdc_initfn(Object
*obj
)
2239 SysBusDevice
*sbd
= SYS_BUS_DEVICE(obj
);
2240 FDCtrlSysBus
*sys
= SYSBUS_FDC(obj
);
2241 FDCtrl
*fdctrl
= &sys
->state
;
2245 memory_region_init_io(&fdctrl
->iomem
, obj
, &fdctrl_mem_strict_ops
,
2246 fdctrl
, "fdctrl", 0x08);
2247 sysbus_init_mmio(sbd
, &fdctrl
->iomem
);
2250 static void sysbus_fdc_common_initfn(Object
*obj
)
2252 DeviceState
*dev
= DEVICE(obj
);
2253 SysBusDevice
*sbd
= SYS_BUS_DEVICE(dev
);
2254 FDCtrlSysBus
*sys
= SYSBUS_FDC(obj
);
2255 FDCtrl
*fdctrl
= &sys
->state
;
2257 qdev_set_legacy_instance_id(dev
, 0 /* io */, 2); /* FIXME */
2259 sysbus_init_irq(sbd
, &fdctrl
->irq
);
2260 qdev_init_gpio_in(dev
, fdctrl_handle_tc
, 1);
2263 static void sysbus_fdc_common_realize(DeviceState
*dev
, Error
**errp
)
2265 FDCtrlSysBus
*sys
= SYSBUS_FDC(dev
);
2266 FDCtrl
*fdctrl
= &sys
->state
;
2268 fdctrl_realize_common(fdctrl
, errp
);
2271 FDriveType
isa_fdc_get_drive_type(ISADevice
*fdc
, int i
)
2273 FDCtrlISABus
*isa
= ISA_FDC(fdc
);
2275 return isa
->state
.drives
[i
].drive
;
2278 static const VMStateDescription vmstate_isa_fdc
={
2281 .minimum_version_id
= 2,
2282 .fields
= (VMStateField
[]) {
2283 VMSTATE_STRUCT(state
, FDCtrlISABus
, 0, vmstate_fdc
, FDCtrl
),
2284 VMSTATE_END_OF_LIST()
2288 static Property isa_fdc_properties
[] = {
2289 DEFINE_PROP_UINT32("iobase", FDCtrlISABus
, iobase
, 0x3f0),
2290 DEFINE_PROP_UINT32("irq", FDCtrlISABus
, irq
, 6),
2291 DEFINE_PROP_UINT32("dma", FDCtrlISABus
, dma
, 2),
2292 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus
, state
.drives
[0].bs
),
2293 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus
, state
.drives
[1].bs
),
2294 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus
, state
.check_media_rate
,
2296 DEFINE_PROP_END_OF_LIST(),
2299 static void isabus_fdc_class_init(ObjectClass
*klass
, void *data
)
2301 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2303 dc
->realize
= isabus_fdc_realize
;
2304 dc
->fw_name
= "fdc";
2305 dc
->reset
= fdctrl_external_reset_isa
;
2306 dc
->vmsd
= &vmstate_isa_fdc
;
2307 dc
->props
= isa_fdc_properties
;
2308 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
2311 static void isabus_fdc_instance_init(Object
*obj
)
2313 FDCtrlISABus
*isa
= ISA_FDC(obj
);
2315 device_add_bootindex_property(obj
, &isa
->bootindexA
,
2316 "bootindexA", "/floppy@0",
2318 device_add_bootindex_property(obj
, &isa
->bootindexB
,
2319 "bootindexB", "/floppy@1",
2323 static const TypeInfo isa_fdc_info
= {
2324 .name
= TYPE_ISA_FDC
,
2325 .parent
= TYPE_ISA_DEVICE
,
2326 .instance_size
= sizeof(FDCtrlISABus
),
2327 .class_init
= isabus_fdc_class_init
,
2328 .instance_init
= isabus_fdc_instance_init
,
2331 static const VMStateDescription vmstate_sysbus_fdc
={
2334 .minimum_version_id
= 2,
2335 .fields
= (VMStateField
[]) {
2336 VMSTATE_STRUCT(state
, FDCtrlSysBus
, 0, vmstate_fdc
, FDCtrl
),
2337 VMSTATE_END_OF_LIST()
2341 static Property sysbus_fdc_properties
[] = {
2342 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus
, state
.drives
[0].bs
),
2343 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus
, state
.drives
[1].bs
),
2344 DEFINE_PROP_END_OF_LIST(),
2347 static void sysbus_fdc_class_init(ObjectClass
*klass
, void *data
)
2349 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2351 dc
->props
= sysbus_fdc_properties
;
2352 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
2355 static const TypeInfo sysbus_fdc_info
= {
2356 .name
= "sysbus-fdc",
2357 .parent
= TYPE_SYSBUS_FDC
,
2358 .instance_init
= sysbus_fdc_initfn
,
2359 .class_init
= sysbus_fdc_class_init
,
2362 static Property sun4m_fdc_properties
[] = {
2363 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus
, state
.drives
[0].bs
),
2364 DEFINE_PROP_END_OF_LIST(),
2367 static void sun4m_fdc_class_init(ObjectClass
*klass
, void *data
)
2369 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2371 dc
->props
= sun4m_fdc_properties
;
2372 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
2375 static const TypeInfo sun4m_fdc_info
= {
2376 .name
= "SUNW,fdtwo",
2377 .parent
= TYPE_SYSBUS_FDC
,
2378 .instance_init
= sun4m_fdc_initfn
,
2379 .class_init
= sun4m_fdc_class_init
,
2382 static void sysbus_fdc_common_class_init(ObjectClass
*klass
, void *data
)
2384 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2386 dc
->realize
= sysbus_fdc_common_realize
;
2387 dc
->reset
= fdctrl_external_reset_sysbus
;
2388 dc
->vmsd
= &vmstate_sysbus_fdc
;
2391 static const TypeInfo sysbus_fdc_type_info
= {
2392 .name
= TYPE_SYSBUS_FDC
,
2393 .parent
= TYPE_SYS_BUS_DEVICE
,
2394 .instance_size
= sizeof(FDCtrlSysBus
),
2395 .instance_init
= sysbus_fdc_common_initfn
,
2397 .class_init
= sysbus_fdc_common_class_init
,
2400 static void fdc_register_types(void)
2402 type_register_static(&isa_fdc_info
);
2403 type_register_static(&sysbus_fdc_type_info
);
2404 type_register_static(&sysbus_fdc_info
);
2405 type_register_static(&sun4m_fdc_info
);
2408 type_init(fdc_register_types
)