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"
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 #define FLOPPY_ERROR(fmt, ...) \
52 do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ## __VA_ARGS__); } while (0)
54 /********************************************************/
55 /* Floppy drive emulation */
57 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
58 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
60 /* Will always be a fixed parameter for us */
61 #define FD_SECTOR_LEN 512
62 #define FD_SECTOR_SC 2 /* Sector size code */
63 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
65 typedef struct FDCtrl FDCtrl
;
67 /* Floppy disk drive emulation */
68 typedef enum FDiskFlags
{
69 FDISK_DBL_SIDES
= 0x01,
72 typedef struct FDrive
{
77 uint8_t perpendicular
; /* 2.88 MB access mode */
84 uint8_t last_sect
; /* Nb sector per track */
85 uint8_t max_track
; /* Nb of tracks */
86 uint16_t bps
; /* Bytes per sector */
87 uint8_t ro
; /* Is read-only */
88 uint8_t media_changed
; /* Is media changed */
89 uint8_t media_rate
; /* Data rate of medium */
92 static void fd_init(FDrive
*drv
)
95 drv
->drive
= FDRIVE_DRV_NONE
;
96 drv
->perpendicular
= 0;
102 #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1)
104 static int fd_sector_calc(uint8_t head
, uint8_t track
, uint8_t sect
,
105 uint8_t last_sect
, uint8_t num_sides
)
107 return (((track
* num_sides
) + head
) * last_sect
) + sect
- 1;
110 /* Returns current position, in sectors, for given drive */
111 static int fd_sector(FDrive
*drv
)
113 return fd_sector_calc(drv
->head
, drv
->track
, drv
->sect
, drv
->last_sect
,
117 /* Seek to a new position:
118 * returns 0 if already on right track
119 * returns 1 if track changed
120 * returns 2 if track is invalid
121 * returns 3 if sector is invalid
122 * returns 4 if seek is disabled
124 static int fd_seek(FDrive
*drv
, uint8_t head
, uint8_t track
, uint8_t sect
,
130 if (track
> drv
->max_track
||
131 (head
!= 0 && (drv
->flags
& FDISK_DBL_SIDES
) == 0)) {
132 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
133 head
, track
, sect
, 1,
134 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
135 drv
->max_track
, drv
->last_sect
);
138 if (sect
> drv
->last_sect
) {
139 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
140 head
, track
, sect
, 1,
141 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
142 drv
->max_track
, drv
->last_sect
);
145 sector
= fd_sector_calc(head
, track
, sect
, drv
->last_sect
, NUM_SIDES(drv
));
147 if (sector
!= fd_sector(drv
)) {
150 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
151 head
, track
, sect
, 1, drv
->max_track
, drv
->last_sect
);
156 if (drv
->track
!= track
)
165 /* Set drive back to track 0 */
166 static void fd_recalibrate(FDrive
*drv
)
168 FLOPPY_DPRINTF("recalibrate\n");
174 /* Revalidate a disk drive after a disk change */
175 static void fd_revalidate(FDrive
*drv
)
177 int nb_heads
, max_track
, last_sect
, ro
;
181 FLOPPY_DPRINTF("revalidate\n");
182 if (drv
->bs
!= NULL
&& bdrv_is_inserted(drv
->bs
)) {
183 ro
= bdrv_is_read_only(drv
->bs
);
184 bdrv_get_floppy_geometry_hint(drv
->bs
, &nb_heads
, &max_track
,
185 &last_sect
, drv
->drive
, &drive
, &rate
);
186 if (nb_heads
!= 0 && max_track
!= 0 && last_sect
!= 0) {
187 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
188 nb_heads
- 1, max_track
, last_sect
);
190 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", nb_heads
,
191 max_track
, last_sect
, ro
? "ro" : "rw");
194 drv
->flags
&= ~FDISK_DBL_SIDES
;
196 drv
->flags
|= FDISK_DBL_SIDES
;
198 drv
->max_track
= max_track
;
199 drv
->last_sect
= last_sect
;
202 drv
->media_rate
= rate
;
204 FLOPPY_DPRINTF("No disk in drive\n");
207 drv
->flags
&= ~FDISK_DBL_SIDES
;
211 /********************************************************/
212 /* Intel 82078 floppy disk controller emulation */
214 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
);
215 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
);
216 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
217 int dma_pos
, int dma_len
);
218 static void fdctrl_raise_irq(FDCtrl
*fdctrl
, uint8_t status0
);
219 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
);
221 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
);
222 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
);
223 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
);
224 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
);
225 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
);
226 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
);
227 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
);
228 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
);
229 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
);
230 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
);
231 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
);
232 static void fdctrl_write_ccr(FDCtrl
*fdctrl
, uint32_t value
);
243 FD_STATE_MULTI
= 0x01, /* multi track flag */
244 FD_STATE_FORMAT
= 0x02, /* format flag */
245 FD_STATE_SEEK
= 0x04, /* seek flag */
261 FD_CMD_READ_TRACK
= 0x02,
262 FD_CMD_SPECIFY
= 0x03,
263 FD_CMD_SENSE_DRIVE_STATUS
= 0x04,
266 FD_CMD_RECALIBRATE
= 0x07,
267 FD_CMD_SENSE_INTERRUPT_STATUS
= 0x08,
268 FD_CMD_WRITE_DELETED
= 0x09,
269 FD_CMD_READ_ID
= 0x0a,
270 FD_CMD_READ_DELETED
= 0x0c,
271 FD_CMD_FORMAT_TRACK
= 0x0d,
272 FD_CMD_DUMPREG
= 0x0e,
274 FD_CMD_VERSION
= 0x10,
275 FD_CMD_SCAN_EQUAL
= 0x11,
276 FD_CMD_PERPENDICULAR_MODE
= 0x12,
277 FD_CMD_CONFIGURE
= 0x13,
279 FD_CMD_VERIFY
= 0x16,
280 FD_CMD_POWERDOWN_MODE
= 0x17,
281 FD_CMD_PART_ID
= 0x18,
282 FD_CMD_SCAN_LOW_OR_EQUAL
= 0x19,
283 FD_CMD_SCAN_HIGH_OR_EQUAL
= 0x1d,
285 FD_CMD_OPTION
= 0x33,
286 FD_CMD_RESTORE
= 0x4e,
287 FD_CMD_DRIVE_SPECIFICATION_COMMAND
= 0x8e,
288 FD_CMD_RELATIVE_SEEK_OUT
= 0x8f,
289 FD_CMD_FORMAT_AND_WRITE
= 0xcd,
290 FD_CMD_RELATIVE_SEEK_IN
= 0xcf,
294 FD_CONFIG_PRETRK
= 0xff, /* Pre-compensation set to track 0 */
295 FD_CONFIG_FIFOTHR
= 0x0f, /* FIFO threshold set to 1 byte */
296 FD_CONFIG_POLL
= 0x10, /* Poll enabled */
297 FD_CONFIG_EFIFO
= 0x20, /* FIFO disabled */
298 FD_CONFIG_EIS
= 0x40, /* No implied seeks */
304 FD_SR0_ABNTERM
= 0x40,
305 FD_SR0_INVCMD
= 0x80,
306 FD_SR0_RDYCHG
= 0xc0,
310 FD_SR1_MA
= 0x01, /* Missing address mark */
311 FD_SR1_NW
= 0x02, /* Not writable */
312 FD_SR1_EC
= 0x80, /* End of cylinder */
316 FD_SR2_SNS
= 0x04, /* Scan not satisfied */
317 FD_SR2_SEH
= 0x08, /* Scan equal hit */
328 FD_SRA_INTPEND
= 0x80,
342 FD_DOR_SELMASK
= 0x03,
344 FD_DOR_SELMASK
= 0x01,
346 FD_DOR_nRESET
= 0x04,
348 FD_DOR_MOTEN0
= 0x10,
349 FD_DOR_MOTEN1
= 0x20,
350 FD_DOR_MOTEN2
= 0x40,
351 FD_DOR_MOTEN3
= 0x80,
356 FD_TDR_BOOTSEL
= 0x0c,
358 FD_TDR_BOOTSEL
= 0x04,
363 FD_DSR_DRATEMASK
= 0x03,
364 FD_DSR_PWRDOWN
= 0x40,
365 FD_DSR_SWRESET
= 0x80,
369 FD_MSR_DRV0BUSY
= 0x01,
370 FD_MSR_DRV1BUSY
= 0x02,
371 FD_MSR_DRV2BUSY
= 0x04,
372 FD_MSR_DRV3BUSY
= 0x08,
373 FD_MSR_CMDBUSY
= 0x10,
374 FD_MSR_NONDMA
= 0x20,
380 FD_DIR_DSKCHG
= 0x80,
383 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
384 #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
385 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
390 /* Controller state */
391 QEMUTimer
*result_timer
;
393 /* Controller's identification */
399 uint8_t dor_vmstate
; /* only used as temp during vmstate */
414 uint8_t eot
; /* last wanted sector */
415 /* States kept only to be returned back */
416 /* precompensation */
420 /* Power down config (also with status regB access mode */
423 uint8_t num_floppies
;
426 FDrive drives
[MAX_FD
];
428 uint32_t check_media_rate
;
434 typedef struct FDCtrlSysBus
{
439 typedef struct FDCtrlISABus
{
449 static uint32_t fdctrl_read (void *opaque
, uint32_t reg
)
451 FDCtrl
*fdctrl
= opaque
;
457 retval
= fdctrl_read_statusA(fdctrl
);
460 retval
= fdctrl_read_statusB(fdctrl
);
463 retval
= fdctrl_read_dor(fdctrl
);
466 retval
= fdctrl_read_tape(fdctrl
);
469 retval
= fdctrl_read_main_status(fdctrl
);
472 retval
= fdctrl_read_data(fdctrl
);
475 retval
= fdctrl_read_dir(fdctrl
);
478 retval
= (uint32_t)(-1);
481 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg
& 7, retval
);
486 static void fdctrl_write (void *opaque
, uint32_t reg
, uint32_t value
)
488 FDCtrl
*fdctrl
= opaque
;
490 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg
& 7, value
);
495 fdctrl_write_dor(fdctrl
, value
);
498 fdctrl_write_tape(fdctrl
, value
);
501 fdctrl_write_rate(fdctrl
, value
);
504 fdctrl_write_data(fdctrl
, value
);
507 fdctrl_write_ccr(fdctrl
, value
);
514 static uint64_t fdctrl_read_mem (void *opaque
, target_phys_addr_t reg
,
517 return fdctrl_read(opaque
, (uint32_t)reg
);
520 static void fdctrl_write_mem (void *opaque
, target_phys_addr_t reg
,
521 uint64_t value
, unsigned size
)
523 fdctrl_write(opaque
, (uint32_t)reg
, value
);
526 static const MemoryRegionOps fdctrl_mem_ops
= {
527 .read
= fdctrl_read_mem
,
528 .write
= fdctrl_write_mem
,
529 .endianness
= DEVICE_NATIVE_ENDIAN
,
532 static const MemoryRegionOps fdctrl_mem_strict_ops
= {
533 .read
= fdctrl_read_mem
,
534 .write
= fdctrl_write_mem
,
535 .endianness
= DEVICE_NATIVE_ENDIAN
,
537 .min_access_size
= 1,
538 .max_access_size
= 1,
542 static bool fdrive_media_changed_needed(void *opaque
)
544 FDrive
*drive
= opaque
;
546 return (drive
->bs
!= NULL
&& drive
->media_changed
!= 1);
549 static const VMStateDescription vmstate_fdrive_media_changed
= {
550 .name
= "fdrive/media_changed",
552 .minimum_version_id
= 1,
553 .minimum_version_id_old
= 1,
554 .fields
= (VMStateField
[]) {
555 VMSTATE_UINT8(media_changed
, FDrive
),
556 VMSTATE_END_OF_LIST()
560 static bool fdrive_media_rate_needed(void *opaque
)
562 FDrive
*drive
= opaque
;
564 return drive
->fdctrl
->check_media_rate
;
567 static const VMStateDescription vmstate_fdrive_media_rate
= {
568 .name
= "fdrive/media_rate",
570 .minimum_version_id
= 1,
571 .minimum_version_id_old
= 1,
572 .fields
= (VMStateField
[]) {
573 VMSTATE_UINT8(media_rate
, FDrive
),
574 VMSTATE_END_OF_LIST()
578 static const VMStateDescription vmstate_fdrive
= {
581 .minimum_version_id
= 1,
582 .minimum_version_id_old
= 1,
583 .fields
= (VMStateField
[]) {
584 VMSTATE_UINT8(head
, FDrive
),
585 VMSTATE_UINT8(track
, FDrive
),
586 VMSTATE_UINT8(sect
, FDrive
),
587 VMSTATE_END_OF_LIST()
589 .subsections
= (VMStateSubsection
[]) {
591 .vmsd
= &vmstate_fdrive_media_changed
,
592 .needed
= &fdrive_media_changed_needed
,
594 .vmsd
= &vmstate_fdrive_media_rate
,
595 .needed
= &fdrive_media_rate_needed
,
602 static void fdc_pre_save(void *opaque
)
606 s
->dor_vmstate
= s
->dor
| GET_CUR_DRV(s
);
609 static int fdc_post_load(void *opaque
, int version_id
)
613 SET_CUR_DRV(s
, s
->dor_vmstate
& FD_DOR_SELMASK
);
614 s
->dor
= s
->dor_vmstate
& ~FD_DOR_SELMASK
;
618 static const VMStateDescription vmstate_fdc
= {
621 .minimum_version_id
= 2,
622 .minimum_version_id_old
= 2,
623 .pre_save
= fdc_pre_save
,
624 .post_load
= fdc_post_load
,
625 .fields
= (VMStateField
[]) {
626 /* Controller State */
627 VMSTATE_UINT8(sra
, FDCtrl
),
628 VMSTATE_UINT8(srb
, FDCtrl
),
629 VMSTATE_UINT8(dor_vmstate
, FDCtrl
),
630 VMSTATE_UINT8(tdr
, FDCtrl
),
631 VMSTATE_UINT8(dsr
, FDCtrl
),
632 VMSTATE_UINT8(msr
, FDCtrl
),
633 VMSTATE_UINT8(status0
, FDCtrl
),
634 VMSTATE_UINT8(status1
, FDCtrl
),
635 VMSTATE_UINT8(status2
, FDCtrl
),
637 VMSTATE_VARRAY_INT32(fifo
, FDCtrl
, fifo_size
, 0, vmstate_info_uint8
,
639 VMSTATE_UINT32(data_pos
, FDCtrl
),
640 VMSTATE_UINT32(data_len
, FDCtrl
),
641 VMSTATE_UINT8(data_state
, FDCtrl
),
642 VMSTATE_UINT8(data_dir
, FDCtrl
),
643 VMSTATE_UINT8(eot
, FDCtrl
),
644 /* States kept only to be returned back */
645 VMSTATE_UINT8(timer0
, FDCtrl
),
646 VMSTATE_UINT8(timer1
, FDCtrl
),
647 VMSTATE_UINT8(precomp_trk
, FDCtrl
),
648 VMSTATE_UINT8(config
, FDCtrl
),
649 VMSTATE_UINT8(lock
, FDCtrl
),
650 VMSTATE_UINT8(pwrd
, FDCtrl
),
651 VMSTATE_UINT8_EQUAL(num_floppies
, FDCtrl
),
652 VMSTATE_STRUCT_ARRAY(drives
, FDCtrl
, MAX_FD
, 1,
653 vmstate_fdrive
, FDrive
),
654 VMSTATE_END_OF_LIST()
658 static void fdctrl_external_reset_sysbus(DeviceState
*d
)
660 FDCtrlSysBus
*sys
= container_of(d
, FDCtrlSysBus
, busdev
.qdev
);
661 FDCtrl
*s
= &sys
->state
;
666 static void fdctrl_external_reset_isa(DeviceState
*d
)
668 FDCtrlISABus
*isa
= container_of(d
, FDCtrlISABus
, busdev
.qdev
);
669 FDCtrl
*s
= &isa
->state
;
674 static void fdctrl_handle_tc(void *opaque
, int irq
, int level
)
676 //FDCtrl *s = opaque;
680 FLOPPY_DPRINTF("TC pulsed\n");
684 /* Change IRQ state */
685 static void fdctrl_reset_irq(FDCtrl
*fdctrl
)
687 if (!(fdctrl
->sra
& FD_SRA_INTPEND
))
689 FLOPPY_DPRINTF("Reset interrupt\n");
690 qemu_set_irq(fdctrl
->irq
, 0);
691 fdctrl
->sra
&= ~FD_SRA_INTPEND
;
694 static void fdctrl_raise_irq(FDCtrl
*fdctrl
, uint8_t status0
)
697 if (fdctrl
->sun4m
&& (fdctrl
->msr
& FD_MSR_CMDBUSY
)) {
699 fdctrl
->msr
&= ~FD_MSR_CMDBUSY
;
700 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
701 fdctrl
->status0
= status0
;
704 if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
705 qemu_set_irq(fdctrl
->irq
, 1);
706 fdctrl
->sra
|= FD_SRA_INTPEND
;
708 if (status0
& FD_SR0_SEEK
) {
710 /* A seek clears the disk change line (if a disk is inserted) */
711 cur_drv
= get_cur_drv(fdctrl
);
712 if (cur_drv
->max_track
) {
713 cur_drv
->media_changed
= 0;
717 fdctrl
->reset_sensei
= 0;
718 fdctrl
->status0
= status0
;
719 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl
->status0
);
722 /* Reset controller */
723 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
)
727 FLOPPY_DPRINTF("reset controller\n");
728 fdctrl_reset_irq(fdctrl
);
729 /* Initialise controller */
732 if (!fdctrl
->drives
[1].bs
)
733 fdctrl
->sra
|= FD_SRA_nDRV2
;
735 fdctrl
->dor
= FD_DOR_nRESET
;
736 fdctrl
->dor
|= (fdctrl
->dma_chann
!= -1) ? FD_DOR_DMAEN
: 0;
737 fdctrl
->msr
= FD_MSR_RQM
;
739 fdctrl
->data_pos
= 0;
740 fdctrl
->data_len
= 0;
741 fdctrl
->data_state
= 0;
742 fdctrl
->data_dir
= FD_DIR_WRITE
;
743 for (i
= 0; i
< MAX_FD
; i
++)
744 fd_recalibrate(&fdctrl
->drives
[i
]);
745 fdctrl_reset_fifo(fdctrl
);
747 fdctrl_raise_irq(fdctrl
, FD_SR0_RDYCHG
);
748 fdctrl
->reset_sensei
= FD_RESET_SENSEI_COUNT
;
752 static inline FDrive
*drv0(FDCtrl
*fdctrl
)
754 return &fdctrl
->drives
[(fdctrl
->tdr
& FD_TDR_BOOTSEL
) >> 2];
757 static inline FDrive
*drv1(FDCtrl
*fdctrl
)
759 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (1 << 2))
760 return &fdctrl
->drives
[1];
762 return &fdctrl
->drives
[0];
766 static inline FDrive
*drv2(FDCtrl
*fdctrl
)
768 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (2 << 2))
769 return &fdctrl
->drives
[2];
771 return &fdctrl
->drives
[1];
774 static inline FDrive
*drv3(FDCtrl
*fdctrl
)
776 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (3 << 2))
777 return &fdctrl
->drives
[3];
779 return &fdctrl
->drives
[2];
783 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
)
785 switch (fdctrl
->cur_drv
) {
786 case 0: return drv0(fdctrl
);
787 case 1: return drv1(fdctrl
);
789 case 2: return drv2(fdctrl
);
790 case 3: return drv3(fdctrl
);
792 default: return NULL
;
796 /* Status A register : 0x00 (read-only) */
797 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
)
799 uint32_t retval
= fdctrl
->sra
;
801 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval
);
806 /* Status B register : 0x01 (read-only) */
807 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
)
809 uint32_t retval
= fdctrl
->srb
;
811 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval
);
816 /* Digital output register : 0x02 */
817 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
)
819 uint32_t retval
= fdctrl
->dor
;
822 retval
|= fdctrl
->cur_drv
;
823 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval
);
828 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
)
830 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value
);
833 if (value
& FD_DOR_MOTEN0
)
834 fdctrl
->srb
|= FD_SRB_MTR0
;
836 fdctrl
->srb
&= ~FD_SRB_MTR0
;
837 if (value
& FD_DOR_MOTEN1
)
838 fdctrl
->srb
|= FD_SRB_MTR1
;
840 fdctrl
->srb
&= ~FD_SRB_MTR1
;
844 fdctrl
->srb
|= FD_SRB_DR0
;
846 fdctrl
->srb
&= ~FD_SRB_DR0
;
849 if (!(value
& FD_DOR_nRESET
)) {
850 if (fdctrl
->dor
& FD_DOR_nRESET
) {
851 FLOPPY_DPRINTF("controller enter RESET state\n");
854 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
855 FLOPPY_DPRINTF("controller out of RESET state\n");
856 fdctrl_reset(fdctrl
, 1);
857 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
861 fdctrl
->cur_drv
= value
& FD_DOR_SELMASK
;
866 /* Tape drive register : 0x03 */
867 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
)
869 uint32_t retval
= fdctrl
->tdr
;
871 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval
);
876 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
)
879 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
880 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
883 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value
);
884 /* Disk boot selection indicator */
885 fdctrl
->tdr
= value
& FD_TDR_BOOTSEL
;
886 /* Tape indicators: never allow */
889 /* Main status register : 0x04 (read) */
890 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
)
892 uint32_t retval
= fdctrl
->msr
;
894 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
895 fdctrl
->dor
|= FD_DOR_nRESET
;
899 retval
|= FD_MSR_DIO
;
900 fdctrl_reset_irq(fdctrl
);
903 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval
);
908 /* Data select rate register : 0x04 (write) */
909 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
)
912 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
913 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
916 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value
);
917 /* Reset: autoclear */
918 if (value
& FD_DSR_SWRESET
) {
919 fdctrl
->dor
&= ~FD_DOR_nRESET
;
920 fdctrl_reset(fdctrl
, 1);
921 fdctrl
->dor
|= FD_DOR_nRESET
;
923 if (value
& FD_DSR_PWRDOWN
) {
924 fdctrl_reset(fdctrl
, 1);
929 /* Configuration control register: 0x07 (write) */
930 static void fdctrl_write_ccr(FDCtrl
*fdctrl
, uint32_t value
)
933 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
934 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
937 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value
);
939 /* Only the rate selection bits used in AT mode, and we
940 * store those in the DSR.
942 fdctrl
->dsr
= (fdctrl
->dsr
& ~FD_DSR_DRATEMASK
) |
943 (value
& FD_DSR_DRATEMASK
);
946 static int fdctrl_media_changed(FDrive
*drv
)
948 return drv
->media_changed
;
951 /* Digital input register : 0x07 (read-only) */
952 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
)
956 if (fdctrl_media_changed(get_cur_drv(fdctrl
))) {
957 retval
|= FD_DIR_DSKCHG
;
960 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval
);
966 /* FIFO state control */
967 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
)
969 fdctrl
->data_dir
= FD_DIR_WRITE
;
970 fdctrl
->data_pos
= 0;
971 fdctrl
->msr
&= ~(FD_MSR_CMDBUSY
| FD_MSR_DIO
);
974 /* Set FIFO status for the host to read */
975 static void fdctrl_set_fifo(FDCtrl
*fdctrl
, int fifo_len
, int do_irq
)
977 fdctrl
->data_dir
= FD_DIR_READ
;
978 fdctrl
->data_len
= fifo_len
;
979 fdctrl
->data_pos
= 0;
980 fdctrl
->msr
|= FD_MSR_CMDBUSY
| FD_MSR_RQM
| FD_MSR_DIO
;
982 fdctrl_raise_irq(fdctrl
, 0x00);
985 /* Set an error: unimplemented/unknown command */
986 static void fdctrl_unimplemented(FDCtrl
*fdctrl
, int direction
)
988 FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl
->fifo
[0]);
989 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
990 fdctrl_set_fifo(fdctrl
, 1, 0);
993 /* Seek to next sector */
994 static int fdctrl_seek_to_next_sect(FDCtrl
*fdctrl
, FDrive
*cur_drv
)
996 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
997 cur_drv
->head
, cur_drv
->track
, cur_drv
->sect
,
999 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1001 if (cur_drv
->sect
>= cur_drv
->last_sect
||
1002 cur_drv
->sect
== fdctrl
->eot
) {
1004 if (FD_MULTI_TRACK(fdctrl
->data_state
)) {
1005 if (cur_drv
->head
== 0 &&
1006 (cur_drv
->flags
& FDISK_DBL_SIDES
) != 0) {
1011 if ((cur_drv
->flags
& FDISK_DBL_SIDES
) == 0)
1018 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1019 cur_drv
->head
, cur_drv
->track
,
1020 cur_drv
->sect
, fd_sector(cur_drv
));
1027 /* Callback for transfer end (stop or abort) */
1028 static void fdctrl_stop_transfer(FDCtrl
*fdctrl
, uint8_t status0
,
1029 uint8_t status1
, uint8_t status2
)
1033 cur_drv
= get_cur_drv(fdctrl
);
1034 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1035 status0
, status1
, status2
,
1036 status0
| (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
));
1037 fdctrl
->fifo
[0] = status0
| (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1038 fdctrl
->fifo
[1] = status1
;
1039 fdctrl
->fifo
[2] = status2
;
1040 fdctrl
->fifo
[3] = cur_drv
->track
;
1041 fdctrl
->fifo
[4] = cur_drv
->head
;
1042 fdctrl
->fifo
[5] = cur_drv
->sect
;
1043 fdctrl
->fifo
[6] = FD_SECTOR_SC
;
1044 fdctrl
->data_dir
= FD_DIR_READ
;
1045 if (!(fdctrl
->msr
& FD_MSR_NONDMA
)) {
1046 DMA_release_DREQ(fdctrl
->dma_chann
);
1048 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
1049 fdctrl
->msr
&= ~FD_MSR_NONDMA
;
1050 fdctrl_set_fifo(fdctrl
, 7, 1);
1053 /* Prepare a data transfer (either DMA or FIFO) */
1054 static void fdctrl_start_transfer(FDCtrl
*fdctrl
, int direction
)
1060 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1061 cur_drv
= get_cur_drv(fdctrl
);
1062 kt
= fdctrl
->fifo
[2];
1063 kh
= fdctrl
->fifo
[3];
1064 ks
= fdctrl
->fifo
[4];
1065 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1066 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1067 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1068 NUM_SIDES(cur_drv
)));
1069 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1072 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1073 fdctrl
->fifo
[3] = kt
;
1074 fdctrl
->fifo
[4] = kh
;
1075 fdctrl
->fifo
[5] = ks
;
1079 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1080 fdctrl
->fifo
[3] = kt
;
1081 fdctrl
->fifo
[4] = kh
;
1082 fdctrl
->fifo
[5] = ks
;
1085 /* No seek enabled */
1086 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1087 fdctrl
->fifo
[3] = kt
;
1088 fdctrl
->fifo
[4] = kh
;
1089 fdctrl
->fifo
[5] = ks
;
1098 /* Check the data rate. If the programmed data rate does not match
1099 * the currently inserted medium, the operation has to fail. */
1100 if (fdctrl
->check_media_rate
&&
1101 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
1102 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1103 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
1104 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
1105 fdctrl
->fifo
[3] = kt
;
1106 fdctrl
->fifo
[4] = kh
;
1107 fdctrl
->fifo
[5] = ks
;
1111 /* Set the FIFO state */
1112 fdctrl
->data_dir
= direction
;
1113 fdctrl
->data_pos
= 0;
1114 fdctrl
->msr
|= FD_MSR_CMDBUSY
;
1115 if (fdctrl
->fifo
[0] & 0x80)
1116 fdctrl
->data_state
|= FD_STATE_MULTI
;
1118 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1120 fdctrl
->data_state
|= FD_STATE_SEEK
;
1122 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1123 if (fdctrl
->fifo
[5] == 00) {
1124 fdctrl
->data_len
= fdctrl
->fifo
[8];
1127 fdctrl
->data_len
= 128 << (fdctrl
->fifo
[5] > 7 ? 7 : fdctrl
->fifo
[5]);
1128 tmp
= (fdctrl
->fifo
[6] - ks
+ 1);
1129 if (fdctrl
->fifo
[0] & 0x80)
1130 tmp
+= fdctrl
->fifo
[6];
1131 fdctrl
->data_len
*= tmp
;
1133 fdctrl
->eot
= fdctrl
->fifo
[6];
1134 if (fdctrl
->dor
& FD_DOR_DMAEN
) {
1136 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1137 dma_mode
= DMA_get_channel_mode(fdctrl
->dma_chann
);
1138 dma_mode
= (dma_mode
>> 2) & 3;
1139 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1140 dma_mode
, direction
,
1141 (128 << fdctrl
->fifo
[5]) *
1142 (cur_drv
->last_sect
- ks
+ 1), fdctrl
->data_len
);
1143 if (((direction
== FD_DIR_SCANE
|| direction
== FD_DIR_SCANL
||
1144 direction
== FD_DIR_SCANH
) && dma_mode
== 0) ||
1145 (direction
== FD_DIR_WRITE
&& dma_mode
== 2) ||
1146 (direction
== FD_DIR_READ
&& dma_mode
== 1)) {
1147 /* No access is allowed until DMA transfer has completed */
1148 fdctrl
->msr
&= ~FD_MSR_RQM
;
1149 /* Now, we just have to wait for the DMA controller to
1152 DMA_hold_DREQ(fdctrl
->dma_chann
);
1153 DMA_schedule(fdctrl
->dma_chann
);
1156 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode
, direction
);
1159 FLOPPY_DPRINTF("start non-DMA transfer\n");
1160 fdctrl
->msr
|= FD_MSR_NONDMA
;
1161 if (direction
!= FD_DIR_WRITE
)
1162 fdctrl
->msr
|= FD_MSR_DIO
;
1163 /* IO based transfer: calculate len */
1164 fdctrl_raise_irq(fdctrl
, 0x00);
1169 /* Prepare a transfer of deleted data */
1170 static void fdctrl_start_transfer_del(FDCtrl
*fdctrl
, int direction
)
1172 FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1174 /* We don't handle deleted data,
1175 * so we don't return *ANYTHING*
1177 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1180 /* handlers for DMA transfers */
1181 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
1182 int dma_pos
, int dma_len
)
1186 int len
, start_pos
, rel_pos
;
1187 uint8_t status0
= 0x00, status1
= 0x00, status2
= 0x00;
1190 if (fdctrl
->msr
& FD_MSR_RQM
) {
1191 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1194 cur_drv
= get_cur_drv(fdctrl
);
1195 if (fdctrl
->data_dir
== FD_DIR_SCANE
|| fdctrl
->data_dir
== FD_DIR_SCANL
||
1196 fdctrl
->data_dir
== FD_DIR_SCANH
)
1197 status2
= FD_SR2_SNS
;
1198 if (dma_len
> fdctrl
->data_len
)
1199 dma_len
= fdctrl
->data_len
;
1200 if (cur_drv
->bs
== NULL
) {
1201 if (fdctrl
->data_dir
== FD_DIR_WRITE
)
1202 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1204 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1206 goto transfer_error
;
1208 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1209 for (start_pos
= fdctrl
->data_pos
; fdctrl
->data_pos
< dma_len
;) {
1210 len
= dma_len
- fdctrl
->data_pos
;
1211 if (len
+ rel_pos
> FD_SECTOR_LEN
)
1212 len
= FD_SECTOR_LEN
- rel_pos
;
1213 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1214 "(%d-0x%08x 0x%08x)\n", len
, dma_len
, fdctrl
->data_pos
,
1215 fdctrl
->data_len
, GET_CUR_DRV(fdctrl
), cur_drv
->head
,
1216 cur_drv
->track
, cur_drv
->sect
, fd_sector(cur_drv
),
1217 fd_sector(cur_drv
) * FD_SECTOR_LEN
);
1218 if (fdctrl
->data_dir
!= FD_DIR_WRITE
||
1219 len
< FD_SECTOR_LEN
|| rel_pos
!= 0) {
1220 /* READ & SCAN commands and realign to a sector for WRITE */
1221 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
),
1222 fdctrl
->fifo
, 1) < 0) {
1223 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1224 fd_sector(cur_drv
));
1225 /* Sure, image size is too small... */
1226 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1229 switch (fdctrl
->data_dir
) {
1232 DMA_write_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1233 fdctrl
->data_pos
, len
);
1236 /* WRITE commands */
1238 /* Handle readonly medium early, no need to do DMA, touch the
1239 * LED or attempt any writes. A real floppy doesn't attempt
1240 * to write to readonly media either. */
1241 fdctrl_stop_transfer(fdctrl
,
1242 FD_SR0_ABNTERM
| FD_SR0_SEEK
, FD_SR1_NW
,
1244 goto transfer_error
;
1247 DMA_read_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1248 fdctrl
->data_pos
, len
);
1249 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
),
1250 fdctrl
->fifo
, 1) < 0) {
1251 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv
));
1252 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1253 goto transfer_error
;
1259 uint8_t tmpbuf
[FD_SECTOR_LEN
];
1261 DMA_read_memory (nchan
, tmpbuf
, fdctrl
->data_pos
, len
);
1262 ret
= memcmp(tmpbuf
, fdctrl
->fifo
+ rel_pos
, len
);
1264 status2
= FD_SR2_SEH
;
1267 if ((ret
< 0 && fdctrl
->data_dir
== FD_DIR_SCANL
) ||
1268 (ret
> 0 && fdctrl
->data_dir
== FD_DIR_SCANH
)) {
1275 fdctrl
->data_pos
+= len
;
1276 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1278 /* Seek to next sector */
1279 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
))
1284 len
= fdctrl
->data_pos
- start_pos
;
1285 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1286 fdctrl
->data_pos
, len
, fdctrl
->data_len
);
1287 if (fdctrl
->data_dir
== FD_DIR_SCANE
||
1288 fdctrl
->data_dir
== FD_DIR_SCANL
||
1289 fdctrl
->data_dir
== FD_DIR_SCANH
)
1290 status2
= FD_SR2_SEH
;
1291 if (FD_DID_SEEK(fdctrl
->data_state
))
1292 status0
|= FD_SR0_SEEK
;
1293 fdctrl
->data_len
-= len
;
1294 fdctrl_stop_transfer(fdctrl
, status0
, status1
, status2
);
1300 /* Data register : 0x05 */
1301 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
)
1304 uint32_t retval
= 0;
1307 cur_drv
= get_cur_drv(fdctrl
);
1308 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1309 if (!(fdctrl
->msr
& FD_MSR_RQM
) || !(fdctrl
->msr
& FD_MSR_DIO
)) {
1310 FLOPPY_ERROR("controller not ready for reading\n");
1313 pos
= fdctrl
->data_pos
;
1314 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1315 pos
%= FD_SECTOR_LEN
;
1317 if (fdctrl
->data_pos
!= 0)
1318 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1319 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1320 fd_sector(cur_drv
));
1323 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1324 FLOPPY_DPRINTF("error getting sector %d\n",
1325 fd_sector(cur_drv
));
1326 /* Sure, image size is too small... */
1327 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1331 retval
= fdctrl
->fifo
[pos
];
1332 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1333 fdctrl
->data_pos
= 0;
1334 /* Switch from transfer mode to status mode
1335 * then from status mode to command mode
1337 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1338 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1340 fdctrl_reset_fifo(fdctrl
);
1341 fdctrl_reset_irq(fdctrl
);
1344 FLOPPY_DPRINTF("data register: 0x%02x\n", retval
);
1349 static void fdctrl_format_sector(FDCtrl
*fdctrl
)
1354 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1355 cur_drv
= get_cur_drv(fdctrl
);
1356 kt
= fdctrl
->fifo
[6];
1357 kh
= fdctrl
->fifo
[7];
1358 ks
= fdctrl
->fifo
[8];
1359 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1360 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1361 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
,
1362 NUM_SIDES(cur_drv
)));
1363 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1366 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1367 fdctrl
->fifo
[3] = kt
;
1368 fdctrl
->fifo
[4] = kh
;
1369 fdctrl
->fifo
[5] = ks
;
1373 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1374 fdctrl
->fifo
[3] = kt
;
1375 fdctrl
->fifo
[4] = kh
;
1376 fdctrl
->fifo
[5] = ks
;
1379 /* No seek enabled */
1380 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1381 fdctrl
->fifo
[3] = kt
;
1382 fdctrl
->fifo
[4] = kh
;
1383 fdctrl
->fifo
[5] = ks
;
1386 fdctrl
->data_state
|= FD_STATE_SEEK
;
1391 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1392 if (cur_drv
->bs
== NULL
||
1393 bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1394 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv
));
1395 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1397 if (cur_drv
->sect
== cur_drv
->last_sect
) {
1398 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1399 /* Last sector done */
1400 if (FD_DID_SEEK(fdctrl
->data_state
))
1401 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1403 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1406 fdctrl
->data_pos
= 0;
1407 fdctrl
->data_len
= 4;
1412 static void fdctrl_handle_lock(FDCtrl
*fdctrl
, int direction
)
1414 fdctrl
->lock
= (fdctrl
->fifo
[0] & 0x80) ? 1 : 0;
1415 fdctrl
->fifo
[0] = fdctrl
->lock
<< 4;
1416 fdctrl_set_fifo(fdctrl
, 1, 0);
1419 static void fdctrl_handle_dumpreg(FDCtrl
*fdctrl
, int direction
)
1421 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1423 /* Drives position */
1424 fdctrl
->fifo
[0] = drv0(fdctrl
)->track
;
1425 fdctrl
->fifo
[1] = drv1(fdctrl
)->track
;
1427 fdctrl
->fifo
[2] = drv2(fdctrl
)->track
;
1428 fdctrl
->fifo
[3] = drv3(fdctrl
)->track
;
1430 fdctrl
->fifo
[2] = 0;
1431 fdctrl
->fifo
[3] = 0;
1434 fdctrl
->fifo
[4] = fdctrl
->timer0
;
1435 fdctrl
->fifo
[5] = (fdctrl
->timer1
<< 1) | (fdctrl
->dor
& FD_DOR_DMAEN
? 1 : 0);
1436 fdctrl
->fifo
[6] = cur_drv
->last_sect
;
1437 fdctrl
->fifo
[7] = (fdctrl
->lock
<< 7) |
1438 (cur_drv
->perpendicular
<< 2);
1439 fdctrl
->fifo
[8] = fdctrl
->config
;
1440 fdctrl
->fifo
[9] = fdctrl
->precomp_trk
;
1441 fdctrl_set_fifo(fdctrl
, 10, 0);
1444 static void fdctrl_handle_version(FDCtrl
*fdctrl
, int direction
)
1446 /* Controller's version */
1447 fdctrl
->fifo
[0] = fdctrl
->version
;
1448 fdctrl_set_fifo(fdctrl
, 1, 0);
1451 static void fdctrl_handle_partid(FDCtrl
*fdctrl
, int direction
)
1453 fdctrl
->fifo
[0] = 0x41; /* Stepping 1 */
1454 fdctrl_set_fifo(fdctrl
, 1, 0);
1457 static void fdctrl_handle_restore(FDCtrl
*fdctrl
, int direction
)
1459 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1461 /* Drives position */
1462 drv0(fdctrl
)->track
= fdctrl
->fifo
[3];
1463 drv1(fdctrl
)->track
= fdctrl
->fifo
[4];
1465 drv2(fdctrl
)->track
= fdctrl
->fifo
[5];
1466 drv3(fdctrl
)->track
= fdctrl
->fifo
[6];
1469 fdctrl
->timer0
= fdctrl
->fifo
[7];
1470 fdctrl
->timer1
= fdctrl
->fifo
[8];
1471 cur_drv
->last_sect
= fdctrl
->fifo
[9];
1472 fdctrl
->lock
= fdctrl
->fifo
[10] >> 7;
1473 cur_drv
->perpendicular
= (fdctrl
->fifo
[10] >> 2) & 0xF;
1474 fdctrl
->config
= fdctrl
->fifo
[11];
1475 fdctrl
->precomp_trk
= fdctrl
->fifo
[12];
1476 fdctrl
->pwrd
= fdctrl
->fifo
[13];
1477 fdctrl_reset_fifo(fdctrl
);
1480 static void fdctrl_handle_save(FDCtrl
*fdctrl
, int direction
)
1482 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1484 fdctrl
->fifo
[0] = 0;
1485 fdctrl
->fifo
[1] = 0;
1486 /* Drives position */
1487 fdctrl
->fifo
[2] = drv0(fdctrl
)->track
;
1488 fdctrl
->fifo
[3] = drv1(fdctrl
)->track
;
1490 fdctrl
->fifo
[4] = drv2(fdctrl
)->track
;
1491 fdctrl
->fifo
[5] = drv3(fdctrl
)->track
;
1493 fdctrl
->fifo
[4] = 0;
1494 fdctrl
->fifo
[5] = 0;
1497 fdctrl
->fifo
[6] = fdctrl
->timer0
;
1498 fdctrl
->fifo
[7] = fdctrl
->timer1
;
1499 fdctrl
->fifo
[8] = cur_drv
->last_sect
;
1500 fdctrl
->fifo
[9] = (fdctrl
->lock
<< 7) |
1501 (cur_drv
->perpendicular
<< 2);
1502 fdctrl
->fifo
[10] = fdctrl
->config
;
1503 fdctrl
->fifo
[11] = fdctrl
->precomp_trk
;
1504 fdctrl
->fifo
[12] = fdctrl
->pwrd
;
1505 fdctrl
->fifo
[13] = 0;
1506 fdctrl
->fifo
[14] = 0;
1507 fdctrl_set_fifo(fdctrl
, 15, 0);
1510 static void fdctrl_handle_readid(FDCtrl
*fdctrl
, int direction
)
1512 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1514 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1515 qemu_mod_timer(fdctrl
->result_timer
,
1516 qemu_get_clock_ns(vm_clock
) + (get_ticks_per_sec() / 50));
1519 static void fdctrl_handle_format_track(FDCtrl
*fdctrl
, int direction
)
1523 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1524 cur_drv
= get_cur_drv(fdctrl
);
1525 fdctrl
->data_state
|= FD_STATE_FORMAT
;
1526 if (fdctrl
->fifo
[0] & 0x80)
1527 fdctrl
->data_state
|= FD_STATE_MULTI
;
1529 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1530 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1532 fdctrl
->fifo
[2] > 7 ? 16384 : 128 << fdctrl
->fifo
[2];
1534 cur_drv
->last_sect
=
1535 cur_drv
->flags
& FDISK_DBL_SIDES
? fdctrl
->fifo
[3] :
1536 fdctrl
->fifo
[3] / 2;
1538 cur_drv
->last_sect
= fdctrl
->fifo
[3];
1540 /* TODO: implement format using DMA expected by the Bochs BIOS
1541 * and Linux fdformat (read 3 bytes per sector via DMA and fill
1542 * the sector with the specified fill byte
1544 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1545 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1548 static void fdctrl_handle_specify(FDCtrl
*fdctrl
, int direction
)
1550 fdctrl
->timer0
= (fdctrl
->fifo
[1] >> 4) & 0xF;
1551 fdctrl
->timer1
= fdctrl
->fifo
[2] >> 1;
1552 if (fdctrl
->fifo
[2] & 1)
1553 fdctrl
->dor
&= ~FD_DOR_DMAEN
;
1555 fdctrl
->dor
|= FD_DOR_DMAEN
;
1556 /* No result back */
1557 fdctrl_reset_fifo(fdctrl
);
1560 static void fdctrl_handle_sense_drive_status(FDCtrl
*fdctrl
, int direction
)
1564 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1565 cur_drv
= get_cur_drv(fdctrl
);
1566 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1567 /* 1 Byte status back */
1568 fdctrl
->fifo
[0] = (cur_drv
->ro
<< 6) |
1569 (cur_drv
->track
== 0 ? 0x10 : 0x00) |
1570 (cur_drv
->head
<< 2) |
1571 GET_CUR_DRV(fdctrl
) |
1573 fdctrl_set_fifo(fdctrl
, 1, 0);
1576 static void fdctrl_handle_recalibrate(FDCtrl
*fdctrl
, int direction
)
1580 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1581 cur_drv
= get_cur_drv(fdctrl
);
1582 fd_recalibrate(cur_drv
);
1583 fdctrl_reset_fifo(fdctrl
);
1584 /* Raise Interrupt */
1585 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1588 static void fdctrl_handle_sense_interrupt_status(FDCtrl
*fdctrl
, int direction
)
1590 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1592 if(fdctrl
->reset_sensei
> 0) {
1594 FD_SR0_RDYCHG
+ FD_RESET_SENSEI_COUNT
- fdctrl
->reset_sensei
;
1595 fdctrl
->reset_sensei
--;
1597 /* XXX: status0 handling is broken for read/write
1598 commands, so we do this hack. It should be suppressed
1601 FD_SR0_SEEK
| (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1604 fdctrl
->fifo
[1] = cur_drv
->track
;
1605 fdctrl_set_fifo(fdctrl
, 2, 0);
1606 fdctrl_reset_irq(fdctrl
);
1607 fdctrl
->status0
= FD_SR0_RDYCHG
;
1610 static void fdctrl_handle_seek(FDCtrl
*fdctrl
, int direction
)
1614 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1615 cur_drv
= get_cur_drv(fdctrl
);
1616 fdctrl_reset_fifo(fdctrl
);
1617 /* The seek command just sends step pulses to the drive and doesn't care if
1618 * there is a medium inserted of if it's banging the head against the drive.
1620 if (fdctrl
->fifo
[2] > cur_drv
->max_track
) {
1621 cur_drv
->track
= cur_drv
->max_track
;
1623 cur_drv
->track
= fdctrl
->fifo
[2];
1625 /* Raise Interrupt */
1626 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1629 static void fdctrl_handle_perpendicular_mode(FDCtrl
*fdctrl
, int direction
)
1631 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1633 if (fdctrl
->fifo
[1] & 0x80)
1634 cur_drv
->perpendicular
= fdctrl
->fifo
[1] & 0x7;
1635 /* No result back */
1636 fdctrl_reset_fifo(fdctrl
);
1639 static void fdctrl_handle_configure(FDCtrl
*fdctrl
, int direction
)
1641 fdctrl
->config
= fdctrl
->fifo
[2];
1642 fdctrl
->precomp_trk
= fdctrl
->fifo
[3];
1643 /* No result back */
1644 fdctrl_reset_fifo(fdctrl
);
1647 static void fdctrl_handle_powerdown_mode(FDCtrl
*fdctrl
, int direction
)
1649 fdctrl
->pwrd
= fdctrl
->fifo
[1];
1650 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1651 fdctrl_set_fifo(fdctrl
, 1, 0);
1654 static void fdctrl_handle_option(FDCtrl
*fdctrl
, int direction
)
1656 /* No result back */
1657 fdctrl_reset_fifo(fdctrl
);
1660 static void fdctrl_handle_drive_specification_command(FDCtrl
*fdctrl
, int direction
)
1662 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1664 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x80) {
1665 /* Command parameters done */
1666 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x40) {
1667 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1668 fdctrl
->fifo
[2] = 0;
1669 fdctrl
->fifo
[3] = 0;
1670 fdctrl_set_fifo(fdctrl
, 4, 0);
1672 fdctrl_reset_fifo(fdctrl
);
1674 } else if (fdctrl
->data_len
> 7) {
1676 fdctrl
->fifo
[0] = 0x80 |
1677 (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1678 fdctrl_set_fifo(fdctrl
, 1, 0);
1682 static void fdctrl_handle_relative_seek_out(FDCtrl
*fdctrl
, int direction
)
1686 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1687 cur_drv
= get_cur_drv(fdctrl
);
1688 if (fdctrl
->fifo
[2] + cur_drv
->track
>= cur_drv
->max_track
) {
1689 cur_drv
->track
= cur_drv
->max_track
- 1;
1691 cur_drv
->track
+= fdctrl
->fifo
[2];
1693 fdctrl_reset_fifo(fdctrl
);
1694 /* Raise Interrupt */
1695 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1698 static void fdctrl_handle_relative_seek_in(FDCtrl
*fdctrl
, int direction
)
1702 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1703 cur_drv
= get_cur_drv(fdctrl
);
1704 if (fdctrl
->fifo
[2] > cur_drv
->track
) {
1707 cur_drv
->track
-= fdctrl
->fifo
[2];
1709 fdctrl_reset_fifo(fdctrl
);
1710 /* Raise Interrupt */
1711 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1714 static const struct {
1719 void (*handler
)(FDCtrl
*fdctrl
, int direction
);
1722 { FD_CMD_READ
, 0x1f, "READ", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1723 { FD_CMD_WRITE
, 0x3f, "WRITE", 8, fdctrl_start_transfer
, FD_DIR_WRITE
},
1724 { FD_CMD_SEEK
, 0xff, "SEEK", 2, fdctrl_handle_seek
},
1725 { FD_CMD_SENSE_INTERRUPT_STATUS
, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status
},
1726 { FD_CMD_RECALIBRATE
, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate
},
1727 { FD_CMD_FORMAT_TRACK
, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track
},
1728 { FD_CMD_READ_TRACK
, 0xbf, "READ TRACK", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1729 { FD_CMD_RESTORE
, 0xff, "RESTORE", 17, fdctrl_handle_restore
}, /* part of READ DELETED DATA */
1730 { FD_CMD_SAVE
, 0xff, "SAVE", 0, fdctrl_handle_save
}, /* part of READ DELETED DATA */
1731 { FD_CMD_READ_DELETED
, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_READ
},
1732 { FD_CMD_SCAN_EQUAL
, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANE
},
1733 { FD_CMD_VERIFY
, 0x1f, "VERIFY", 8, fdctrl_unimplemented
},
1734 { FD_CMD_SCAN_LOW_OR_EQUAL
, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANL
},
1735 { FD_CMD_SCAN_HIGH_OR_EQUAL
, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANH
},
1736 { FD_CMD_WRITE_DELETED
, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_WRITE
},
1737 { FD_CMD_READ_ID
, 0xbf, "READ ID", 1, fdctrl_handle_readid
},
1738 { FD_CMD_SPECIFY
, 0xff, "SPECIFY", 2, fdctrl_handle_specify
},
1739 { FD_CMD_SENSE_DRIVE_STATUS
, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status
},
1740 { FD_CMD_PERPENDICULAR_MODE
, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode
},
1741 { FD_CMD_CONFIGURE
, 0xff, "CONFIGURE", 3, fdctrl_handle_configure
},
1742 { FD_CMD_POWERDOWN_MODE
, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode
},
1743 { FD_CMD_OPTION
, 0xff, "OPTION", 1, fdctrl_handle_option
},
1744 { FD_CMD_DRIVE_SPECIFICATION_COMMAND
, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command
},
1745 { FD_CMD_RELATIVE_SEEK_OUT
, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out
},
1746 { FD_CMD_FORMAT_AND_WRITE
, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented
},
1747 { FD_CMD_RELATIVE_SEEK_IN
, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in
},
1748 { FD_CMD_LOCK
, 0x7f, "LOCK", 0, fdctrl_handle_lock
},
1749 { FD_CMD_DUMPREG
, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg
},
1750 { FD_CMD_VERSION
, 0xff, "VERSION", 0, fdctrl_handle_version
},
1751 { FD_CMD_PART_ID
, 0xff, "PART ID", 0, fdctrl_handle_partid
},
1752 { FD_CMD_WRITE
, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer
, FD_DIR_WRITE
}, /* not in specification ; BeOS 4.5 bug */
1753 { 0, 0, "unknown", 0, fdctrl_unimplemented
}, /* default handler */
1755 /* Associate command to an index in the 'handlers' array */
1756 static uint8_t command_to_handler
[256];
1758 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
)
1764 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1765 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1768 if (!(fdctrl
->msr
& FD_MSR_RQM
) || (fdctrl
->msr
& FD_MSR_DIO
)) {
1769 FLOPPY_ERROR("controller not ready for writing\n");
1772 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1773 /* Is it write command time ? */
1774 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1775 /* FIFO data write */
1776 pos
= fdctrl
->data_pos
++;
1777 pos
%= FD_SECTOR_LEN
;
1778 fdctrl
->fifo
[pos
] = value
;
1779 if (pos
== FD_SECTOR_LEN
- 1 ||
1780 fdctrl
->data_pos
== fdctrl
->data_len
) {
1781 cur_drv
= get_cur_drv(fdctrl
);
1782 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1783 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv
));
1786 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1787 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1788 fd_sector(cur_drv
));
1792 /* Switch from transfer mode to status mode
1793 * then from status mode to command mode
1795 if (fdctrl
->data_pos
== fdctrl
->data_len
)
1796 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1799 if (fdctrl
->data_pos
== 0) {
1801 pos
= command_to_handler
[value
& 0xff];
1802 FLOPPY_DPRINTF("%s command\n", handlers
[pos
].name
);
1803 fdctrl
->data_len
= handlers
[pos
].parameters
+ 1;
1804 fdctrl
->msr
|= FD_MSR_CMDBUSY
;
1807 FLOPPY_DPRINTF("%s: %02x\n", __func__
, value
);
1808 fdctrl
->fifo
[fdctrl
->data_pos
++] = value
;
1809 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
1810 /* We now have all parameters
1811 * and will be able to treat the command
1813 if (fdctrl
->data_state
& FD_STATE_FORMAT
) {
1814 fdctrl_format_sector(fdctrl
);
1818 pos
= command_to_handler
[fdctrl
->fifo
[0] & 0xff];
1819 FLOPPY_DPRINTF("treat %s command\n", handlers
[pos
].name
);
1820 (*handlers
[pos
].handler
)(fdctrl
, handlers
[pos
].direction
);
1824 static void fdctrl_result_timer(void *opaque
)
1826 FDCtrl
*fdctrl
= opaque
;
1827 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1829 /* Pretend we are spinning.
1830 * This is needed for Coherent, which uses READ ID to check for
1831 * sector interleaving.
1833 if (cur_drv
->last_sect
!= 0) {
1834 cur_drv
->sect
= (cur_drv
->sect
% cur_drv
->last_sect
) + 1;
1836 /* READ_ID can't automatically succeed! */
1837 if (fdctrl
->check_media_rate
&&
1838 (fdctrl
->dsr
& FD_DSR_DRATEMASK
) != cur_drv
->media_rate
) {
1839 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
1840 fdctrl
->dsr
& FD_DSR_DRATEMASK
, cur_drv
->media_rate
);
1841 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_MA
, 0x00);
1843 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1847 static void fdctrl_change_cb(void *opaque
, bool load
)
1849 FDrive
*drive
= opaque
;
1851 drive
->media_changed
= 1;
1852 fd_revalidate(drive
);
1855 static const BlockDevOps fdctrl_block_ops
= {
1856 .change_media_cb
= fdctrl_change_cb
,
1859 /* Init functions */
1860 static int fdctrl_connect_drives(FDCtrl
*fdctrl
)
1865 for (i
= 0; i
< MAX_FD
; i
++) {
1866 drive
= &fdctrl
->drives
[i
];
1867 drive
->fdctrl
= fdctrl
;
1870 if (bdrv_get_on_error(drive
->bs
, 0) != BLOCK_ERR_STOP_ENOSPC
) {
1871 error_report("fdc doesn't support drive option werror");
1874 if (bdrv_get_on_error(drive
->bs
, 1) != BLOCK_ERR_REPORT
) {
1875 error_report("fdc doesn't support drive option rerror");
1881 fd_revalidate(drive
);
1883 bdrv_set_dev_ops(drive
->bs
, &fdctrl_block_ops
, drive
);
1889 void fdctrl_init_sysbus(qemu_irq irq
, int dma_chann
,
1890 target_phys_addr_t mmio_base
, DriveInfo
**fds
)
1896 dev
= qdev_create(NULL
, "sysbus-fdc");
1897 sys
= DO_UPCAST(FDCtrlSysBus
, busdev
.qdev
, dev
);
1898 fdctrl
= &sys
->state
;
1899 fdctrl
->dma_chann
= dma_chann
; /* FIXME */
1901 qdev_prop_set_drive_nofail(dev
, "driveA", fds
[0]->bdrv
);
1904 qdev_prop_set_drive_nofail(dev
, "driveB", fds
[1]->bdrv
);
1906 qdev_init_nofail(dev
);
1907 sysbus_connect_irq(&sys
->busdev
, 0, irq
);
1908 sysbus_mmio_map(&sys
->busdev
, 0, mmio_base
);
1911 void sun4m_fdctrl_init(qemu_irq irq
, target_phys_addr_t io_base
,
1912 DriveInfo
**fds
, qemu_irq
*fdc_tc
)
1917 dev
= qdev_create(NULL
, "SUNW,fdtwo");
1919 qdev_prop_set_drive_nofail(dev
, "drive", fds
[0]->bdrv
);
1921 qdev_init_nofail(dev
);
1922 sys
= DO_UPCAST(FDCtrlSysBus
, busdev
.qdev
, dev
);
1923 sysbus_connect_irq(&sys
->busdev
, 0, irq
);
1924 sysbus_mmio_map(&sys
->busdev
, 0, io_base
);
1925 *fdc_tc
= qdev_get_gpio_in(dev
, 0);
1928 static int fdctrl_init_common(FDCtrl
*fdctrl
)
1931 static int command_tables_inited
= 0;
1933 /* Fill 'command_to_handler' lookup table */
1934 if (!command_tables_inited
) {
1935 command_tables_inited
= 1;
1936 for (i
= ARRAY_SIZE(handlers
) - 1; i
>= 0; i
--) {
1937 for (j
= 0; j
< sizeof(command_to_handler
); j
++) {
1938 if ((j
& handlers
[i
].mask
) == handlers
[i
].value
) {
1939 command_to_handler
[j
] = i
;
1945 FLOPPY_DPRINTF("init controller\n");
1946 fdctrl
->fifo
= qemu_memalign(512, FD_SECTOR_LEN
);
1947 fdctrl
->fifo_size
= 512;
1948 fdctrl
->result_timer
= qemu_new_timer_ns(vm_clock
,
1949 fdctrl_result_timer
, fdctrl
);
1951 fdctrl
->version
= 0x90; /* Intel 82078 controller */
1952 fdctrl
->config
= FD_CONFIG_EIS
| FD_CONFIG_EFIFO
; /* Implicit seek, polling & FIFO enabled */
1953 fdctrl
->num_floppies
= MAX_FD
;
1955 if (fdctrl
->dma_chann
!= -1)
1956 DMA_register_channel(fdctrl
->dma_chann
, &fdctrl_transfer_handler
, fdctrl
);
1957 return fdctrl_connect_drives(fdctrl
);
1960 static const MemoryRegionPortio fdc_portio_list
[] = {
1961 { 1, 5, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
1962 { 7, 1, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
1963 PORTIO_END_OF_LIST(),
1966 static int isabus_fdc_init1(ISADevice
*dev
)
1968 FDCtrlISABus
*isa
= DO_UPCAST(FDCtrlISABus
, busdev
, dev
);
1969 FDCtrl
*fdctrl
= &isa
->state
;
1972 isa_register_portio_list(dev
, isa
->iobase
, fdc_portio_list
, fdctrl
, "fdc");
1974 isa_init_irq(&isa
->busdev
, &fdctrl
->irq
, isa
->irq
);
1975 fdctrl
->dma_chann
= isa
->dma
;
1977 qdev_set_legacy_instance_id(&dev
->qdev
, isa
->iobase
, 2);
1978 ret
= fdctrl_init_common(fdctrl
);
1980 add_boot_device_path(isa
->bootindexA
, &dev
->qdev
, "/floppy@0");
1981 add_boot_device_path(isa
->bootindexB
, &dev
->qdev
, "/floppy@1");
1986 static int sysbus_fdc_init1(SysBusDevice
*dev
)
1988 FDCtrlSysBus
*sys
= DO_UPCAST(FDCtrlSysBus
, busdev
, dev
);
1989 FDCtrl
*fdctrl
= &sys
->state
;
1992 memory_region_init_io(&fdctrl
->iomem
, &fdctrl_mem_ops
, fdctrl
, "fdc", 0x08);
1993 sysbus_init_mmio(dev
, &fdctrl
->iomem
);
1994 sysbus_init_irq(dev
, &fdctrl
->irq
);
1995 qdev_init_gpio_in(&dev
->qdev
, fdctrl_handle_tc
, 1);
1996 fdctrl
->dma_chann
= -1;
1998 qdev_set_legacy_instance_id(&dev
->qdev
, 0 /* io */, 2); /* FIXME */
1999 ret
= fdctrl_init_common(fdctrl
);
2004 static int sun4m_fdc_init1(SysBusDevice
*dev
)
2006 FDCtrl
*fdctrl
= &(FROM_SYSBUS(FDCtrlSysBus
, dev
)->state
);
2008 memory_region_init_io(&fdctrl
->iomem
, &fdctrl_mem_strict_ops
, fdctrl
,
2010 sysbus_init_mmio(dev
, &fdctrl
->iomem
);
2011 sysbus_init_irq(dev
, &fdctrl
->irq
);
2012 qdev_init_gpio_in(&dev
->qdev
, fdctrl_handle_tc
, 1);
2015 qdev_set_legacy_instance_id(&dev
->qdev
, 0 /* io */, 2); /* FIXME */
2016 return fdctrl_init_common(fdctrl
);
2019 void fdc_get_bs(BlockDriverState
*bs
[], ISADevice
*dev
)
2021 FDCtrlISABus
*isa
= DO_UPCAST(FDCtrlISABus
, busdev
, dev
);
2022 FDCtrl
*fdctrl
= &isa
->state
;
2025 for (i
= 0; i
< MAX_FD
; i
++) {
2026 bs
[i
] = fdctrl
->drives
[i
].bs
;
2031 static const VMStateDescription vmstate_isa_fdc
={
2034 .minimum_version_id
= 2,
2035 .fields
= (VMStateField
[]) {
2036 VMSTATE_STRUCT(state
, FDCtrlISABus
, 0, vmstate_fdc
, FDCtrl
),
2037 VMSTATE_END_OF_LIST()
2041 static Property isa_fdc_properties
[] = {
2042 DEFINE_PROP_HEX32("iobase", FDCtrlISABus
, iobase
, 0x3f0),
2043 DEFINE_PROP_UINT32("irq", FDCtrlISABus
, irq
, 6),
2044 DEFINE_PROP_UINT32("dma", FDCtrlISABus
, dma
, 2),
2045 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus
, state
.drives
[0].bs
),
2046 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus
, state
.drives
[1].bs
),
2047 DEFINE_PROP_INT32("bootindexA", FDCtrlISABus
, bootindexA
, -1),
2048 DEFINE_PROP_INT32("bootindexB", FDCtrlISABus
, bootindexB
, -1),
2049 DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus
, state
.check_media_rate
,
2051 DEFINE_PROP_END_OF_LIST(),
2054 static void isabus_fdc_class_init1(ObjectClass
*klass
, void *data
)
2056 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2057 ISADeviceClass
*ic
= ISA_DEVICE_CLASS(klass
);
2058 ic
->init
= isabus_fdc_init1
;
2059 dc
->fw_name
= "fdc";
2061 dc
->reset
= fdctrl_external_reset_isa
;
2062 dc
->vmsd
= &vmstate_isa_fdc
;
2063 dc
->props
= isa_fdc_properties
;
2066 static TypeInfo isa_fdc_info
= {
2068 .parent
= TYPE_ISA_DEVICE
,
2069 .instance_size
= sizeof(FDCtrlISABus
),
2070 .class_init
= isabus_fdc_class_init1
,
2073 static const VMStateDescription vmstate_sysbus_fdc
={
2076 .minimum_version_id
= 2,
2077 .fields
= (VMStateField
[]) {
2078 VMSTATE_STRUCT(state
, FDCtrlSysBus
, 0, vmstate_fdc
, FDCtrl
),
2079 VMSTATE_END_OF_LIST()
2083 static Property sysbus_fdc_properties
[] = {
2084 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus
, state
.drives
[0].bs
),
2085 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus
, state
.drives
[1].bs
),
2086 DEFINE_PROP_END_OF_LIST(),
2089 static void sysbus_fdc_class_init(ObjectClass
*klass
, void *data
)
2091 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2092 SysBusDeviceClass
*k
= SYS_BUS_DEVICE_CLASS(klass
);
2094 k
->init
= sysbus_fdc_init1
;
2095 dc
->reset
= fdctrl_external_reset_sysbus
;
2096 dc
->vmsd
= &vmstate_sysbus_fdc
;
2097 dc
->props
= sysbus_fdc_properties
;
2100 static TypeInfo sysbus_fdc_info
= {
2101 .name
= "sysbus-fdc",
2102 .parent
= TYPE_SYS_BUS_DEVICE
,
2103 .instance_size
= sizeof(FDCtrlSysBus
),
2104 .class_init
= sysbus_fdc_class_init
,
2107 static Property sun4m_fdc_properties
[] = {
2108 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus
, state
.drives
[0].bs
),
2109 DEFINE_PROP_END_OF_LIST(),
2112 static void sun4m_fdc_class_init(ObjectClass
*klass
, void *data
)
2114 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2115 SysBusDeviceClass
*k
= SYS_BUS_DEVICE_CLASS(klass
);
2117 k
->init
= sun4m_fdc_init1
;
2118 dc
->reset
= fdctrl_external_reset_sysbus
;
2119 dc
->vmsd
= &vmstate_sysbus_fdc
;
2120 dc
->props
= sun4m_fdc_properties
;
2123 static TypeInfo sun4m_fdc_info
= {
2124 .name
= "SUNW,fdtwo",
2125 .parent
= TYPE_SYS_BUS_DEVICE
,
2126 .instance_size
= sizeof(FDCtrlSysBus
),
2127 .class_init
= sun4m_fdc_class_init
,
2130 static void fdc_register_types(void)
2132 type_register_static(&isa_fdc_info
);
2133 type_register_static(&sysbus_fdc_info
);
2134 type_register_static(&sun4m_fdc_info
);
2137 type_init(fdc_register_types
)