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 /* Floppy disk drive emulation */
66 typedef enum FDiskFlags
{
67 FDISK_DBL_SIDES
= 0x01,
70 typedef struct FDrive
{
74 uint8_t perpendicular
; /* 2.88 MB access mode */
81 uint8_t last_sect
; /* Nb sector per track */
82 uint8_t max_track
; /* Nb of tracks */
83 uint16_t bps
; /* Bytes per sector */
84 uint8_t ro
; /* Is read-only */
85 uint8_t media_changed
; /* Is media changed */
88 static void fd_init(FDrive
*drv
)
91 drv
->drive
= FDRIVE_DRV_NONE
;
92 drv
->perpendicular
= 0;
98 static int fd_sector_calc(uint8_t head
, uint8_t track
, uint8_t sect
,
101 return (((track
* 2) + head
) * last_sect
) + sect
- 1;
104 /* Returns current position, in sectors, for given drive */
105 static int fd_sector(FDrive
*drv
)
107 return fd_sector_calc(drv
->head
, drv
->track
, drv
->sect
, drv
->last_sect
);
110 /* Seek to a new position:
111 * returns 0 if already on right track
112 * returns 1 if track changed
113 * returns 2 if track is invalid
114 * returns 3 if sector is invalid
115 * returns 4 if seek is disabled
117 static int fd_seek(FDrive
*drv
, uint8_t head
, uint8_t track
, uint8_t sect
,
123 if (track
> drv
->max_track
||
124 (head
!= 0 && (drv
->flags
& FDISK_DBL_SIDES
) == 0)) {
125 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
126 head
, track
, sect
, 1,
127 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
128 drv
->max_track
, drv
->last_sect
);
131 if (sect
> drv
->last_sect
) {
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 sector
= fd_sector_calc(head
, track
, sect
, drv
->last_sect
);
140 if (sector
!= fd_sector(drv
)) {
143 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
144 head
, track
, sect
, 1, drv
->max_track
, drv
->last_sect
);
149 if (drv
->track
!= track
)
158 /* Set drive back to track 0 */
159 static void fd_recalibrate(FDrive
*drv
)
161 FLOPPY_DPRINTF("recalibrate\n");
167 /* Revalidate a disk drive after a disk change */
168 static void fd_revalidate(FDrive
*drv
)
170 int nb_heads
, max_track
, last_sect
, ro
;
173 FLOPPY_DPRINTF("revalidate\n");
174 if (drv
->bs
!= NULL
&& bdrv_is_inserted(drv
->bs
)) {
175 ro
= bdrv_is_read_only(drv
->bs
);
176 bdrv_get_floppy_geometry_hint(drv
->bs
, &nb_heads
, &max_track
,
177 &last_sect
, drv
->drive
, &drive
);
178 if (nb_heads
!= 0 && max_track
!= 0 && last_sect
!= 0) {
179 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
180 nb_heads
- 1, max_track
, last_sect
);
182 FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", nb_heads
,
183 max_track
, last_sect
, ro
? "ro" : "rw");
186 drv
->flags
&= ~FDISK_DBL_SIDES
;
188 drv
->flags
|= FDISK_DBL_SIDES
;
190 drv
->max_track
= max_track
;
191 drv
->last_sect
= last_sect
;
195 FLOPPY_DPRINTF("No disk in drive\n");
198 drv
->flags
&= ~FDISK_DBL_SIDES
;
202 /********************************************************/
203 /* Intel 82078 floppy disk controller emulation */
205 typedef struct FDCtrl FDCtrl
;
207 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
);
208 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
);
209 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
210 int dma_pos
, int dma_len
);
211 static void fdctrl_raise_irq(FDCtrl
*fdctrl
, uint8_t status0
);
213 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
);
214 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
);
215 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
);
216 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
);
217 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
);
218 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
);
219 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
);
220 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
);
221 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
);
222 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
);
223 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
);
234 FD_STATE_MULTI
= 0x01, /* multi track flag */
235 FD_STATE_FORMAT
= 0x02, /* format flag */
236 FD_STATE_SEEK
= 0x04, /* seek flag */
251 FD_CMD_READ_TRACK
= 0x02,
252 FD_CMD_SPECIFY
= 0x03,
253 FD_CMD_SENSE_DRIVE_STATUS
= 0x04,
256 FD_CMD_RECALIBRATE
= 0x07,
257 FD_CMD_SENSE_INTERRUPT_STATUS
= 0x08,
258 FD_CMD_WRITE_DELETED
= 0x09,
259 FD_CMD_READ_ID
= 0x0a,
260 FD_CMD_READ_DELETED
= 0x0c,
261 FD_CMD_FORMAT_TRACK
= 0x0d,
262 FD_CMD_DUMPREG
= 0x0e,
264 FD_CMD_VERSION
= 0x10,
265 FD_CMD_SCAN_EQUAL
= 0x11,
266 FD_CMD_PERPENDICULAR_MODE
= 0x12,
267 FD_CMD_CONFIGURE
= 0x13,
269 FD_CMD_VERIFY
= 0x16,
270 FD_CMD_POWERDOWN_MODE
= 0x17,
271 FD_CMD_PART_ID
= 0x18,
272 FD_CMD_SCAN_LOW_OR_EQUAL
= 0x19,
273 FD_CMD_SCAN_HIGH_OR_EQUAL
= 0x1d,
275 FD_CMD_OPTION
= 0x33,
276 FD_CMD_RESTORE
= 0x4e,
277 FD_CMD_DRIVE_SPECIFICATION_COMMAND
= 0x8e,
278 FD_CMD_RELATIVE_SEEK_OUT
= 0x8f,
279 FD_CMD_FORMAT_AND_WRITE
= 0xcd,
280 FD_CMD_RELATIVE_SEEK_IN
= 0xcf,
284 FD_CONFIG_PRETRK
= 0xff, /* Pre-compensation set to track 0 */
285 FD_CONFIG_FIFOTHR
= 0x0f, /* FIFO threshold set to 1 byte */
286 FD_CONFIG_POLL
= 0x10, /* Poll enabled */
287 FD_CONFIG_EFIFO
= 0x20, /* FIFO disabled */
288 FD_CONFIG_EIS
= 0x40, /* No implied seeks */
294 FD_SR0_ABNTERM
= 0x40,
295 FD_SR0_INVCMD
= 0x80,
296 FD_SR0_RDYCHG
= 0xc0,
300 FD_SR1_EC
= 0x80, /* End of cylinder */
304 FD_SR2_SNS
= 0x04, /* Scan not satisfied */
305 FD_SR2_SEH
= 0x08, /* Scan equal hit */
316 FD_SRA_INTPEND
= 0x80,
330 FD_DOR_SELMASK
= 0x03,
332 FD_DOR_SELMASK
= 0x01,
334 FD_DOR_nRESET
= 0x04,
336 FD_DOR_MOTEN0
= 0x10,
337 FD_DOR_MOTEN1
= 0x20,
338 FD_DOR_MOTEN2
= 0x40,
339 FD_DOR_MOTEN3
= 0x80,
344 FD_TDR_BOOTSEL
= 0x0c,
346 FD_TDR_BOOTSEL
= 0x04,
351 FD_DSR_DRATEMASK
= 0x03,
352 FD_DSR_PWRDOWN
= 0x40,
353 FD_DSR_SWRESET
= 0x80,
357 FD_MSR_DRV0BUSY
= 0x01,
358 FD_MSR_DRV1BUSY
= 0x02,
359 FD_MSR_DRV2BUSY
= 0x04,
360 FD_MSR_DRV3BUSY
= 0x08,
361 FD_MSR_CMDBUSY
= 0x10,
362 FD_MSR_NONDMA
= 0x20,
368 FD_DIR_DSKCHG
= 0x80,
371 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
372 #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
373 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
377 /* Controller state */
378 QEMUTimer
*result_timer
;
380 /* Controller's identification */
386 uint8_t dor_vmstate
; /* only used as temp during vmstate */
401 uint8_t eot
; /* last wanted sector */
402 /* States kept only to be returned back */
403 /* precompensation */
407 /* Power down config (also with status regB access mode */
410 uint8_t num_floppies
;
413 FDrive drives
[MAX_FD
];
420 typedef struct FDCtrlSysBus
{
425 typedef struct FDCtrlISABus
{
432 static uint32_t fdctrl_read (void *opaque
, uint32_t reg
)
434 FDCtrl
*fdctrl
= opaque
;
440 retval
= fdctrl_read_statusA(fdctrl
);
443 retval
= fdctrl_read_statusB(fdctrl
);
446 retval
= fdctrl_read_dor(fdctrl
);
449 retval
= fdctrl_read_tape(fdctrl
);
452 retval
= fdctrl_read_main_status(fdctrl
);
455 retval
= fdctrl_read_data(fdctrl
);
458 retval
= fdctrl_read_dir(fdctrl
);
461 retval
= (uint32_t)(-1);
464 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg
& 7, retval
);
469 static void fdctrl_write (void *opaque
, uint32_t reg
, uint32_t value
)
471 FDCtrl
*fdctrl
= opaque
;
473 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg
& 7, value
);
478 fdctrl_write_dor(fdctrl
, value
);
481 fdctrl_write_tape(fdctrl
, value
);
484 fdctrl_write_rate(fdctrl
, value
);
487 fdctrl_write_data(fdctrl
, value
);
494 static uint32_t fdctrl_read_mem (void *opaque
, target_phys_addr_t reg
)
496 return fdctrl_read(opaque
, (uint32_t)reg
);
499 static void fdctrl_write_mem (void *opaque
,
500 target_phys_addr_t reg
, uint32_t value
)
502 fdctrl_write(opaque
, (uint32_t)reg
, value
);
505 static CPUReadMemoryFunc
* const fdctrl_mem_read
[3] = {
511 static CPUWriteMemoryFunc
* const fdctrl_mem_write
[3] = {
517 static CPUReadMemoryFunc
* const fdctrl_mem_read_strict
[3] = {
523 static CPUWriteMemoryFunc
* const fdctrl_mem_write_strict
[3] = {
529 static bool fdrive_media_changed_needed(void *opaque
)
531 FDrive
*drive
= opaque
;
533 return (drive
->bs
!= NULL
&& drive
->media_changed
!= 1);
536 static const VMStateDescription vmstate_fdrive_media_changed
= {
537 .name
= "fdrive/media_changed",
539 .minimum_version_id
= 1,
540 .minimum_version_id_old
= 1,
541 .fields
= (VMStateField
[]) {
542 VMSTATE_UINT8(media_changed
, FDrive
),
543 VMSTATE_END_OF_LIST()
547 static const VMStateDescription vmstate_fdrive
= {
550 .minimum_version_id
= 1,
551 .minimum_version_id_old
= 1,
552 .fields
= (VMStateField
[]) {
553 VMSTATE_UINT8(head
, FDrive
),
554 VMSTATE_UINT8(track
, FDrive
),
555 VMSTATE_UINT8(sect
, FDrive
),
556 VMSTATE_END_OF_LIST()
558 .subsections
= (VMStateSubsection
[]) {
560 .vmsd
= &vmstate_fdrive_media_changed
,
561 .needed
= &fdrive_media_changed_needed
,
568 static void fdc_pre_save(void *opaque
)
572 s
->dor_vmstate
= s
->dor
| GET_CUR_DRV(s
);
575 static int fdc_post_load(void *opaque
, int version_id
)
579 SET_CUR_DRV(s
, s
->dor_vmstate
& FD_DOR_SELMASK
);
580 s
->dor
= s
->dor_vmstate
& ~FD_DOR_SELMASK
;
584 static const VMStateDescription vmstate_fdc
= {
587 .minimum_version_id
= 2,
588 .minimum_version_id_old
= 2,
589 .pre_save
= fdc_pre_save
,
590 .post_load
= fdc_post_load
,
591 .fields
= (VMStateField
[]) {
592 /* Controller State */
593 VMSTATE_UINT8(sra
, FDCtrl
),
594 VMSTATE_UINT8(srb
, FDCtrl
),
595 VMSTATE_UINT8(dor_vmstate
, FDCtrl
),
596 VMSTATE_UINT8(tdr
, FDCtrl
),
597 VMSTATE_UINT8(dsr
, FDCtrl
),
598 VMSTATE_UINT8(msr
, FDCtrl
),
599 VMSTATE_UINT8(status0
, FDCtrl
),
600 VMSTATE_UINT8(status1
, FDCtrl
),
601 VMSTATE_UINT8(status2
, FDCtrl
),
603 VMSTATE_VARRAY_INT32(fifo
, FDCtrl
, fifo_size
, 0, vmstate_info_uint8
,
605 VMSTATE_UINT32(data_pos
, FDCtrl
),
606 VMSTATE_UINT32(data_len
, FDCtrl
),
607 VMSTATE_UINT8(data_state
, FDCtrl
),
608 VMSTATE_UINT8(data_dir
, FDCtrl
),
609 VMSTATE_UINT8(eot
, FDCtrl
),
610 /* States kept only to be returned back */
611 VMSTATE_UINT8(timer0
, FDCtrl
),
612 VMSTATE_UINT8(timer1
, FDCtrl
),
613 VMSTATE_UINT8(precomp_trk
, FDCtrl
),
614 VMSTATE_UINT8(config
, FDCtrl
),
615 VMSTATE_UINT8(lock
, FDCtrl
),
616 VMSTATE_UINT8(pwrd
, FDCtrl
),
617 VMSTATE_UINT8_EQUAL(num_floppies
, FDCtrl
),
618 VMSTATE_STRUCT_ARRAY(drives
, FDCtrl
, MAX_FD
, 1,
619 vmstate_fdrive
, FDrive
),
620 VMSTATE_END_OF_LIST()
624 static void fdctrl_external_reset_sysbus(DeviceState
*d
)
626 FDCtrlSysBus
*sys
= container_of(d
, FDCtrlSysBus
, busdev
.qdev
);
627 FDCtrl
*s
= &sys
->state
;
632 static void fdctrl_external_reset_isa(DeviceState
*d
)
634 FDCtrlISABus
*isa
= container_of(d
, FDCtrlISABus
, busdev
.qdev
);
635 FDCtrl
*s
= &isa
->state
;
640 static void fdctrl_handle_tc(void *opaque
, int irq
, int level
)
642 //FDCtrl *s = opaque;
646 FLOPPY_DPRINTF("TC pulsed\n");
650 /* Change IRQ state */
651 static void fdctrl_reset_irq(FDCtrl
*fdctrl
)
653 if (!(fdctrl
->sra
& FD_SRA_INTPEND
))
655 FLOPPY_DPRINTF("Reset interrupt\n");
656 qemu_set_irq(fdctrl
->irq
, 0);
657 fdctrl
->sra
&= ~FD_SRA_INTPEND
;
660 static void fdctrl_raise_irq(FDCtrl
*fdctrl
, uint8_t status0
)
663 if (fdctrl
->sun4m
&& (fdctrl
->msr
& FD_MSR_CMDBUSY
)) {
665 fdctrl
->msr
&= ~FD_MSR_CMDBUSY
;
666 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
667 fdctrl
->status0
= status0
;
670 if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
671 qemu_set_irq(fdctrl
->irq
, 1);
672 fdctrl
->sra
|= FD_SRA_INTPEND
;
674 fdctrl
->reset_sensei
= 0;
675 fdctrl
->status0
= status0
;
676 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl
->status0
);
679 /* Reset controller */
680 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
)
684 FLOPPY_DPRINTF("reset controller\n");
685 fdctrl_reset_irq(fdctrl
);
686 /* Initialise controller */
689 if (!fdctrl
->drives
[1].bs
)
690 fdctrl
->sra
|= FD_SRA_nDRV2
;
692 fdctrl
->dor
= FD_DOR_nRESET
;
693 fdctrl
->dor
|= (fdctrl
->dma_chann
!= -1) ? FD_DOR_DMAEN
: 0;
694 fdctrl
->msr
= FD_MSR_RQM
;
696 fdctrl
->data_pos
= 0;
697 fdctrl
->data_len
= 0;
698 fdctrl
->data_state
= 0;
699 fdctrl
->data_dir
= FD_DIR_WRITE
;
700 for (i
= 0; i
< MAX_FD
; i
++)
701 fd_recalibrate(&fdctrl
->drives
[i
]);
702 fdctrl_reset_fifo(fdctrl
);
704 fdctrl_raise_irq(fdctrl
, FD_SR0_RDYCHG
);
705 fdctrl
->reset_sensei
= FD_RESET_SENSEI_COUNT
;
709 static inline FDrive
*drv0(FDCtrl
*fdctrl
)
711 return &fdctrl
->drives
[(fdctrl
->tdr
& FD_TDR_BOOTSEL
) >> 2];
714 static inline FDrive
*drv1(FDCtrl
*fdctrl
)
716 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (1 << 2))
717 return &fdctrl
->drives
[1];
719 return &fdctrl
->drives
[0];
723 static inline FDrive
*drv2(FDCtrl
*fdctrl
)
725 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (2 << 2))
726 return &fdctrl
->drives
[2];
728 return &fdctrl
->drives
[1];
731 static inline FDrive
*drv3(FDCtrl
*fdctrl
)
733 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (3 << 2))
734 return &fdctrl
->drives
[3];
736 return &fdctrl
->drives
[2];
740 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
)
742 switch (fdctrl
->cur_drv
) {
743 case 0: return drv0(fdctrl
);
744 case 1: return drv1(fdctrl
);
746 case 2: return drv2(fdctrl
);
747 case 3: return drv3(fdctrl
);
749 default: return NULL
;
753 /* Status A register : 0x00 (read-only) */
754 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
)
756 uint32_t retval
= fdctrl
->sra
;
758 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval
);
763 /* Status B register : 0x01 (read-only) */
764 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
)
766 uint32_t retval
= fdctrl
->srb
;
768 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval
);
773 /* Digital output register : 0x02 */
774 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
)
776 uint32_t retval
= fdctrl
->dor
;
779 retval
|= fdctrl
->cur_drv
;
780 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval
);
785 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
)
787 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value
);
790 if (value
& FD_DOR_MOTEN0
)
791 fdctrl
->srb
|= FD_SRB_MTR0
;
793 fdctrl
->srb
&= ~FD_SRB_MTR0
;
794 if (value
& FD_DOR_MOTEN1
)
795 fdctrl
->srb
|= FD_SRB_MTR1
;
797 fdctrl
->srb
&= ~FD_SRB_MTR1
;
801 fdctrl
->srb
|= FD_SRB_DR0
;
803 fdctrl
->srb
&= ~FD_SRB_DR0
;
806 if (!(value
& FD_DOR_nRESET
)) {
807 if (fdctrl
->dor
& FD_DOR_nRESET
) {
808 FLOPPY_DPRINTF("controller enter RESET state\n");
811 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
812 FLOPPY_DPRINTF("controller out of RESET state\n");
813 fdctrl_reset(fdctrl
, 1);
814 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
818 fdctrl
->cur_drv
= value
& FD_DOR_SELMASK
;
823 /* Tape drive register : 0x03 */
824 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
)
826 uint32_t retval
= fdctrl
->tdr
;
828 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval
);
833 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
)
836 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
837 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
840 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value
);
841 /* Disk boot selection indicator */
842 fdctrl
->tdr
= value
& FD_TDR_BOOTSEL
;
843 /* Tape indicators: never allow */
846 /* Main status register : 0x04 (read) */
847 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
)
849 uint32_t retval
= fdctrl
->msr
;
851 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
852 fdctrl
->dor
|= FD_DOR_nRESET
;
856 retval
|= FD_MSR_DIO
;
857 fdctrl_reset_irq(fdctrl
);
860 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval
);
865 /* Data select rate register : 0x04 (write) */
866 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
)
869 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
870 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
873 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value
);
874 /* Reset: autoclear */
875 if (value
& FD_DSR_SWRESET
) {
876 fdctrl
->dor
&= ~FD_DOR_nRESET
;
877 fdctrl_reset(fdctrl
, 1);
878 fdctrl
->dor
|= FD_DOR_nRESET
;
880 if (value
& FD_DSR_PWRDOWN
) {
881 fdctrl_reset(fdctrl
, 1);
886 static int fdctrl_media_changed(FDrive
*drv
)
892 if (drv
->media_changed
) {
893 drv
->media_changed
= 0;
896 ret
= bdrv_media_changed(drv
->bs
);
898 ret
= 0; /* we don't know, assume no */
907 /* Digital input register : 0x07 (read-only) */
908 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
)
912 if (fdctrl_media_changed(drv0(fdctrl
))
913 || fdctrl_media_changed(drv1(fdctrl
))
915 || fdctrl_media_changed(drv2(fdctrl
))
916 || fdctrl_media_changed(drv3(fdctrl
))
919 retval
|= FD_DIR_DSKCHG
;
921 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval
);
927 /* FIFO state control */
928 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
)
930 fdctrl
->data_dir
= FD_DIR_WRITE
;
931 fdctrl
->data_pos
= 0;
932 fdctrl
->msr
&= ~(FD_MSR_CMDBUSY
| FD_MSR_DIO
);
935 /* Set FIFO status for the host to read */
936 static void fdctrl_set_fifo(FDCtrl
*fdctrl
, int fifo_len
, int do_irq
)
938 fdctrl
->data_dir
= FD_DIR_READ
;
939 fdctrl
->data_len
= fifo_len
;
940 fdctrl
->data_pos
= 0;
941 fdctrl
->msr
|= FD_MSR_CMDBUSY
| FD_MSR_RQM
| FD_MSR_DIO
;
943 fdctrl_raise_irq(fdctrl
, 0x00);
946 /* Set an error: unimplemented/unknown command */
947 static void fdctrl_unimplemented(FDCtrl
*fdctrl
, int direction
)
949 FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl
->fifo
[0]);
950 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
951 fdctrl_set_fifo(fdctrl
, 1, 0);
954 /* Seek to next sector */
955 static int fdctrl_seek_to_next_sect(FDCtrl
*fdctrl
, FDrive
*cur_drv
)
957 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
958 cur_drv
->head
, cur_drv
->track
, cur_drv
->sect
,
960 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
962 if (cur_drv
->sect
>= cur_drv
->last_sect
||
963 cur_drv
->sect
== fdctrl
->eot
) {
965 if (FD_MULTI_TRACK(fdctrl
->data_state
)) {
966 if (cur_drv
->head
== 0 &&
967 (cur_drv
->flags
& FDISK_DBL_SIDES
) != 0) {
972 if ((cur_drv
->flags
& FDISK_DBL_SIDES
) == 0)
979 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
980 cur_drv
->head
, cur_drv
->track
,
981 cur_drv
->sect
, fd_sector(cur_drv
));
988 /* Callback for transfer end (stop or abort) */
989 static void fdctrl_stop_transfer(FDCtrl
*fdctrl
, uint8_t status0
,
990 uint8_t status1
, uint8_t status2
)
994 cur_drv
= get_cur_drv(fdctrl
);
995 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
996 status0
, status1
, status2
,
997 status0
| (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
));
998 fdctrl
->fifo
[0] = status0
| (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
999 fdctrl
->fifo
[1] = status1
;
1000 fdctrl
->fifo
[2] = status2
;
1001 fdctrl
->fifo
[3] = cur_drv
->track
;
1002 fdctrl
->fifo
[4] = cur_drv
->head
;
1003 fdctrl
->fifo
[5] = cur_drv
->sect
;
1004 fdctrl
->fifo
[6] = FD_SECTOR_SC
;
1005 fdctrl
->data_dir
= FD_DIR_READ
;
1006 if (!(fdctrl
->msr
& FD_MSR_NONDMA
)) {
1007 DMA_release_DREQ(fdctrl
->dma_chann
);
1009 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
1010 fdctrl
->msr
&= ~FD_MSR_NONDMA
;
1011 fdctrl_set_fifo(fdctrl
, 7, 1);
1014 /* Prepare a data transfer (either DMA or FIFO) */
1015 static void fdctrl_start_transfer(FDCtrl
*fdctrl
, int direction
)
1021 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1022 cur_drv
= get_cur_drv(fdctrl
);
1023 kt
= fdctrl
->fifo
[2];
1024 kh
= fdctrl
->fifo
[3];
1025 ks
= fdctrl
->fifo
[4];
1026 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1027 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1028 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
));
1029 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1032 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1033 fdctrl
->fifo
[3] = kt
;
1034 fdctrl
->fifo
[4] = kh
;
1035 fdctrl
->fifo
[5] = ks
;
1039 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1040 fdctrl
->fifo
[3] = kt
;
1041 fdctrl
->fifo
[4] = kh
;
1042 fdctrl
->fifo
[5] = ks
;
1045 /* No seek enabled */
1046 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1047 fdctrl
->fifo
[3] = kt
;
1048 fdctrl
->fifo
[4] = kh
;
1049 fdctrl
->fifo
[5] = ks
;
1058 /* Set the FIFO state */
1059 fdctrl
->data_dir
= direction
;
1060 fdctrl
->data_pos
= 0;
1061 fdctrl
->msr
|= FD_MSR_CMDBUSY
;
1062 if (fdctrl
->fifo
[0] & 0x80)
1063 fdctrl
->data_state
|= FD_STATE_MULTI
;
1065 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1067 fdctrl
->data_state
|= FD_STATE_SEEK
;
1069 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1070 if (fdctrl
->fifo
[5] == 00) {
1071 fdctrl
->data_len
= fdctrl
->fifo
[8];
1074 fdctrl
->data_len
= 128 << (fdctrl
->fifo
[5] > 7 ? 7 : fdctrl
->fifo
[5]);
1075 tmp
= (fdctrl
->fifo
[6] - ks
+ 1);
1076 if (fdctrl
->fifo
[0] & 0x80)
1077 tmp
+= fdctrl
->fifo
[6];
1078 fdctrl
->data_len
*= tmp
;
1080 fdctrl
->eot
= fdctrl
->fifo
[6];
1081 if (fdctrl
->dor
& FD_DOR_DMAEN
) {
1083 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1084 dma_mode
= DMA_get_channel_mode(fdctrl
->dma_chann
);
1085 dma_mode
= (dma_mode
>> 2) & 3;
1086 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1087 dma_mode
, direction
,
1088 (128 << fdctrl
->fifo
[5]) *
1089 (cur_drv
->last_sect
- ks
+ 1), fdctrl
->data_len
);
1090 if (((direction
== FD_DIR_SCANE
|| direction
== FD_DIR_SCANL
||
1091 direction
== FD_DIR_SCANH
) && dma_mode
== 0) ||
1092 (direction
== FD_DIR_WRITE
&& dma_mode
== 2) ||
1093 (direction
== FD_DIR_READ
&& dma_mode
== 1)) {
1094 /* No access is allowed until DMA transfer has completed */
1095 fdctrl
->msr
&= ~FD_MSR_RQM
;
1096 /* Now, we just have to wait for the DMA controller to
1099 DMA_hold_DREQ(fdctrl
->dma_chann
);
1100 DMA_schedule(fdctrl
->dma_chann
);
1103 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode
, direction
);
1106 FLOPPY_DPRINTF("start non-DMA transfer\n");
1107 fdctrl
->msr
|= FD_MSR_NONDMA
;
1108 if (direction
!= FD_DIR_WRITE
)
1109 fdctrl
->msr
|= FD_MSR_DIO
;
1110 /* IO based transfer: calculate len */
1111 fdctrl_raise_irq(fdctrl
, 0x00);
1116 /* Prepare a transfer of deleted data */
1117 static void fdctrl_start_transfer_del(FDCtrl
*fdctrl
, int direction
)
1119 FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1121 /* We don't handle deleted data,
1122 * so we don't return *ANYTHING*
1124 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1127 /* handlers for DMA transfers */
1128 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
1129 int dma_pos
, int dma_len
)
1133 int len
, start_pos
, rel_pos
;
1134 uint8_t status0
= 0x00, status1
= 0x00, status2
= 0x00;
1137 if (fdctrl
->msr
& FD_MSR_RQM
) {
1138 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1141 cur_drv
= get_cur_drv(fdctrl
);
1142 if (fdctrl
->data_dir
== FD_DIR_SCANE
|| fdctrl
->data_dir
== FD_DIR_SCANL
||
1143 fdctrl
->data_dir
== FD_DIR_SCANH
)
1144 status2
= FD_SR2_SNS
;
1145 if (dma_len
> fdctrl
->data_len
)
1146 dma_len
= fdctrl
->data_len
;
1147 if (cur_drv
->bs
== NULL
) {
1148 if (fdctrl
->data_dir
== FD_DIR_WRITE
)
1149 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1151 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1153 goto transfer_error
;
1155 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1156 for (start_pos
= fdctrl
->data_pos
; fdctrl
->data_pos
< dma_len
;) {
1157 len
= dma_len
- fdctrl
->data_pos
;
1158 if (len
+ rel_pos
> FD_SECTOR_LEN
)
1159 len
= FD_SECTOR_LEN
- rel_pos
;
1160 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1161 "(%d-0x%08x 0x%08x)\n", len
, dma_len
, fdctrl
->data_pos
,
1162 fdctrl
->data_len
, GET_CUR_DRV(fdctrl
), cur_drv
->head
,
1163 cur_drv
->track
, cur_drv
->sect
, fd_sector(cur_drv
),
1164 fd_sector(cur_drv
) * FD_SECTOR_LEN
);
1165 if (fdctrl
->data_dir
!= FD_DIR_WRITE
||
1166 len
< FD_SECTOR_LEN
|| rel_pos
!= 0) {
1167 /* READ & SCAN commands and realign to a sector for WRITE */
1168 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
),
1169 fdctrl
->fifo
, 1) < 0) {
1170 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1171 fd_sector(cur_drv
));
1172 /* Sure, image size is too small... */
1173 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1176 switch (fdctrl
->data_dir
) {
1179 DMA_write_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1180 fdctrl
->data_pos
, len
);
1183 /* WRITE commands */
1184 DMA_read_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1185 fdctrl
->data_pos
, len
);
1186 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
),
1187 fdctrl
->fifo
, 1) < 0) {
1188 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv
));
1189 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1190 goto transfer_error
;
1196 uint8_t tmpbuf
[FD_SECTOR_LEN
];
1198 DMA_read_memory (nchan
, tmpbuf
, fdctrl
->data_pos
, len
);
1199 ret
= memcmp(tmpbuf
, fdctrl
->fifo
+ rel_pos
, len
);
1201 status2
= FD_SR2_SEH
;
1204 if ((ret
< 0 && fdctrl
->data_dir
== FD_DIR_SCANL
) ||
1205 (ret
> 0 && fdctrl
->data_dir
== FD_DIR_SCANH
)) {
1212 fdctrl
->data_pos
+= len
;
1213 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1215 /* Seek to next sector */
1216 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
))
1221 len
= fdctrl
->data_pos
- start_pos
;
1222 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1223 fdctrl
->data_pos
, len
, fdctrl
->data_len
);
1224 if (fdctrl
->data_dir
== FD_DIR_SCANE
||
1225 fdctrl
->data_dir
== FD_DIR_SCANL
||
1226 fdctrl
->data_dir
== FD_DIR_SCANH
)
1227 status2
= FD_SR2_SEH
;
1228 if (FD_DID_SEEK(fdctrl
->data_state
))
1229 status0
|= FD_SR0_SEEK
;
1230 fdctrl
->data_len
-= len
;
1231 fdctrl_stop_transfer(fdctrl
, status0
, status1
, status2
);
1237 /* Data register : 0x05 */
1238 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
)
1241 uint32_t retval
= 0;
1244 cur_drv
= get_cur_drv(fdctrl
);
1245 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1246 if (!(fdctrl
->msr
& FD_MSR_RQM
) || !(fdctrl
->msr
& FD_MSR_DIO
)) {
1247 FLOPPY_ERROR("controller not ready for reading\n");
1250 pos
= fdctrl
->data_pos
;
1251 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1252 pos
%= FD_SECTOR_LEN
;
1254 if (fdctrl
->data_pos
!= 0)
1255 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1256 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1257 fd_sector(cur_drv
));
1260 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1261 FLOPPY_DPRINTF("error getting sector %d\n",
1262 fd_sector(cur_drv
));
1263 /* Sure, image size is too small... */
1264 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1268 retval
= fdctrl
->fifo
[pos
];
1269 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1270 fdctrl
->data_pos
= 0;
1271 /* Switch from transfer mode to status mode
1272 * then from status mode to command mode
1274 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1275 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1277 fdctrl_reset_fifo(fdctrl
);
1278 fdctrl_reset_irq(fdctrl
);
1281 FLOPPY_DPRINTF("data register: 0x%02x\n", retval
);
1286 static void fdctrl_format_sector(FDCtrl
*fdctrl
)
1291 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1292 cur_drv
= get_cur_drv(fdctrl
);
1293 kt
= fdctrl
->fifo
[6];
1294 kh
= fdctrl
->fifo
[7];
1295 ks
= fdctrl
->fifo
[8];
1296 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1297 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1298 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
));
1299 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1302 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1303 fdctrl
->fifo
[3] = kt
;
1304 fdctrl
->fifo
[4] = kh
;
1305 fdctrl
->fifo
[5] = ks
;
1309 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1310 fdctrl
->fifo
[3] = kt
;
1311 fdctrl
->fifo
[4] = kh
;
1312 fdctrl
->fifo
[5] = ks
;
1315 /* No seek enabled */
1316 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1317 fdctrl
->fifo
[3] = kt
;
1318 fdctrl
->fifo
[4] = kh
;
1319 fdctrl
->fifo
[5] = ks
;
1322 fdctrl
->data_state
|= FD_STATE_SEEK
;
1327 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1328 if (cur_drv
->bs
== NULL
||
1329 bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1330 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv
));
1331 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1333 if (cur_drv
->sect
== cur_drv
->last_sect
) {
1334 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1335 /* Last sector done */
1336 if (FD_DID_SEEK(fdctrl
->data_state
))
1337 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1339 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1342 fdctrl
->data_pos
= 0;
1343 fdctrl
->data_len
= 4;
1348 static void fdctrl_handle_lock(FDCtrl
*fdctrl
, int direction
)
1350 fdctrl
->lock
= (fdctrl
->fifo
[0] & 0x80) ? 1 : 0;
1351 fdctrl
->fifo
[0] = fdctrl
->lock
<< 4;
1352 fdctrl_set_fifo(fdctrl
, 1, fdctrl
->lock
);
1355 static void fdctrl_handle_dumpreg(FDCtrl
*fdctrl
, int direction
)
1357 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1359 /* Drives position */
1360 fdctrl
->fifo
[0] = drv0(fdctrl
)->track
;
1361 fdctrl
->fifo
[1] = drv1(fdctrl
)->track
;
1363 fdctrl
->fifo
[2] = drv2(fdctrl
)->track
;
1364 fdctrl
->fifo
[3] = drv3(fdctrl
)->track
;
1366 fdctrl
->fifo
[2] = 0;
1367 fdctrl
->fifo
[3] = 0;
1370 fdctrl
->fifo
[4] = fdctrl
->timer0
;
1371 fdctrl
->fifo
[5] = (fdctrl
->timer1
<< 1) | (fdctrl
->dor
& FD_DOR_DMAEN
? 1 : 0);
1372 fdctrl
->fifo
[6] = cur_drv
->last_sect
;
1373 fdctrl
->fifo
[7] = (fdctrl
->lock
<< 7) |
1374 (cur_drv
->perpendicular
<< 2);
1375 fdctrl
->fifo
[8] = fdctrl
->config
;
1376 fdctrl
->fifo
[9] = fdctrl
->precomp_trk
;
1377 fdctrl_set_fifo(fdctrl
, 10, 0);
1380 static void fdctrl_handle_version(FDCtrl
*fdctrl
, int direction
)
1382 /* Controller's version */
1383 fdctrl
->fifo
[0] = fdctrl
->version
;
1384 fdctrl_set_fifo(fdctrl
, 1, 1);
1387 static void fdctrl_handle_partid(FDCtrl
*fdctrl
, int direction
)
1389 fdctrl
->fifo
[0] = 0x41; /* Stepping 1 */
1390 fdctrl_set_fifo(fdctrl
, 1, 0);
1393 static void fdctrl_handle_restore(FDCtrl
*fdctrl
, int direction
)
1395 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1397 /* Drives position */
1398 drv0(fdctrl
)->track
= fdctrl
->fifo
[3];
1399 drv1(fdctrl
)->track
= fdctrl
->fifo
[4];
1401 drv2(fdctrl
)->track
= fdctrl
->fifo
[5];
1402 drv3(fdctrl
)->track
= fdctrl
->fifo
[6];
1405 fdctrl
->timer0
= fdctrl
->fifo
[7];
1406 fdctrl
->timer1
= fdctrl
->fifo
[8];
1407 cur_drv
->last_sect
= fdctrl
->fifo
[9];
1408 fdctrl
->lock
= fdctrl
->fifo
[10] >> 7;
1409 cur_drv
->perpendicular
= (fdctrl
->fifo
[10] >> 2) & 0xF;
1410 fdctrl
->config
= fdctrl
->fifo
[11];
1411 fdctrl
->precomp_trk
= fdctrl
->fifo
[12];
1412 fdctrl
->pwrd
= fdctrl
->fifo
[13];
1413 fdctrl_reset_fifo(fdctrl
);
1416 static void fdctrl_handle_save(FDCtrl
*fdctrl
, int direction
)
1418 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1420 fdctrl
->fifo
[0] = 0;
1421 fdctrl
->fifo
[1] = 0;
1422 /* Drives position */
1423 fdctrl
->fifo
[2] = drv0(fdctrl
)->track
;
1424 fdctrl
->fifo
[3] = drv1(fdctrl
)->track
;
1426 fdctrl
->fifo
[4] = drv2(fdctrl
)->track
;
1427 fdctrl
->fifo
[5] = drv3(fdctrl
)->track
;
1429 fdctrl
->fifo
[4] = 0;
1430 fdctrl
->fifo
[5] = 0;
1433 fdctrl
->fifo
[6] = fdctrl
->timer0
;
1434 fdctrl
->fifo
[7] = fdctrl
->timer1
;
1435 fdctrl
->fifo
[8] = cur_drv
->last_sect
;
1436 fdctrl
->fifo
[9] = (fdctrl
->lock
<< 7) |
1437 (cur_drv
->perpendicular
<< 2);
1438 fdctrl
->fifo
[10] = fdctrl
->config
;
1439 fdctrl
->fifo
[11] = fdctrl
->precomp_trk
;
1440 fdctrl
->fifo
[12] = fdctrl
->pwrd
;
1441 fdctrl
->fifo
[13] = 0;
1442 fdctrl
->fifo
[14] = 0;
1443 fdctrl_set_fifo(fdctrl
, 15, 1);
1446 static void fdctrl_handle_readid(FDCtrl
*fdctrl
, int direction
)
1448 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1450 /* XXX: should set main status register to busy */
1451 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1452 qemu_mod_timer(fdctrl
->result_timer
,
1453 qemu_get_clock_ns(vm_clock
) + (get_ticks_per_sec() / 50));
1456 static void fdctrl_handle_format_track(FDCtrl
*fdctrl
, int direction
)
1460 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1461 cur_drv
= get_cur_drv(fdctrl
);
1462 fdctrl
->data_state
|= FD_STATE_FORMAT
;
1463 if (fdctrl
->fifo
[0] & 0x80)
1464 fdctrl
->data_state
|= FD_STATE_MULTI
;
1466 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1467 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1469 fdctrl
->fifo
[2] > 7 ? 16384 : 128 << fdctrl
->fifo
[2];
1471 cur_drv
->last_sect
=
1472 cur_drv
->flags
& FDISK_DBL_SIDES
? fdctrl
->fifo
[3] :
1473 fdctrl
->fifo
[3] / 2;
1475 cur_drv
->last_sect
= fdctrl
->fifo
[3];
1477 /* TODO: implement format using DMA expected by the Bochs BIOS
1478 * and Linux fdformat (read 3 bytes per sector via DMA and fill
1479 * the sector with the specified fill byte
1481 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1482 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1485 static void fdctrl_handle_specify(FDCtrl
*fdctrl
, int direction
)
1487 fdctrl
->timer0
= (fdctrl
->fifo
[1] >> 4) & 0xF;
1488 fdctrl
->timer1
= fdctrl
->fifo
[2] >> 1;
1489 if (fdctrl
->fifo
[2] & 1)
1490 fdctrl
->dor
&= ~FD_DOR_DMAEN
;
1492 fdctrl
->dor
|= FD_DOR_DMAEN
;
1493 /* No result back */
1494 fdctrl_reset_fifo(fdctrl
);
1497 static void fdctrl_handle_sense_drive_status(FDCtrl
*fdctrl
, int direction
)
1501 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1502 cur_drv
= get_cur_drv(fdctrl
);
1503 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1504 /* 1 Byte status back */
1505 fdctrl
->fifo
[0] = (cur_drv
->ro
<< 6) |
1506 (cur_drv
->track
== 0 ? 0x10 : 0x00) |
1507 (cur_drv
->head
<< 2) |
1508 GET_CUR_DRV(fdctrl
) |
1510 fdctrl_set_fifo(fdctrl
, 1, 0);
1513 static void fdctrl_handle_recalibrate(FDCtrl
*fdctrl
, int direction
)
1517 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1518 cur_drv
= get_cur_drv(fdctrl
);
1519 fd_recalibrate(cur_drv
);
1520 fdctrl_reset_fifo(fdctrl
);
1521 /* Raise Interrupt */
1522 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1525 static void fdctrl_handle_sense_interrupt_status(FDCtrl
*fdctrl
, int direction
)
1527 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1529 if(fdctrl
->reset_sensei
> 0) {
1531 FD_SR0_RDYCHG
+ FD_RESET_SENSEI_COUNT
- fdctrl
->reset_sensei
;
1532 fdctrl
->reset_sensei
--;
1534 /* XXX: status0 handling is broken for read/write
1535 commands, so we do this hack. It should be suppressed
1538 FD_SR0_SEEK
| (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1541 fdctrl
->fifo
[1] = cur_drv
->track
;
1542 fdctrl_set_fifo(fdctrl
, 2, 0);
1543 fdctrl_reset_irq(fdctrl
);
1544 fdctrl
->status0
= FD_SR0_RDYCHG
;
1547 static void fdctrl_handle_seek(FDCtrl
*fdctrl
, int direction
)
1551 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1552 cur_drv
= get_cur_drv(fdctrl
);
1553 fdctrl_reset_fifo(fdctrl
);
1554 if (fdctrl
->fifo
[2] > cur_drv
->max_track
) {
1555 fdctrl_raise_irq(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
);
1557 cur_drv
->track
= fdctrl
->fifo
[2];
1558 /* Raise Interrupt */
1559 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1563 static void fdctrl_handle_perpendicular_mode(FDCtrl
*fdctrl
, int direction
)
1565 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1567 if (fdctrl
->fifo
[1] & 0x80)
1568 cur_drv
->perpendicular
= fdctrl
->fifo
[1] & 0x7;
1569 /* No result back */
1570 fdctrl_reset_fifo(fdctrl
);
1573 static void fdctrl_handle_configure(FDCtrl
*fdctrl
, int direction
)
1575 fdctrl
->config
= fdctrl
->fifo
[2];
1576 fdctrl
->precomp_trk
= fdctrl
->fifo
[3];
1577 /* No result back */
1578 fdctrl_reset_fifo(fdctrl
);
1581 static void fdctrl_handle_powerdown_mode(FDCtrl
*fdctrl
, int direction
)
1583 fdctrl
->pwrd
= fdctrl
->fifo
[1];
1584 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1585 fdctrl_set_fifo(fdctrl
, 1, 1);
1588 static void fdctrl_handle_option(FDCtrl
*fdctrl
, int direction
)
1590 /* No result back */
1591 fdctrl_reset_fifo(fdctrl
);
1594 static void fdctrl_handle_drive_specification_command(FDCtrl
*fdctrl
, int direction
)
1596 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1598 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x80) {
1599 /* Command parameters done */
1600 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x40) {
1601 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1602 fdctrl
->fifo
[2] = 0;
1603 fdctrl
->fifo
[3] = 0;
1604 fdctrl_set_fifo(fdctrl
, 4, 1);
1606 fdctrl_reset_fifo(fdctrl
);
1608 } else if (fdctrl
->data_len
> 7) {
1610 fdctrl
->fifo
[0] = 0x80 |
1611 (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1612 fdctrl_set_fifo(fdctrl
, 1, 1);
1616 static void fdctrl_handle_relative_seek_out(FDCtrl
*fdctrl
, int direction
)
1620 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1621 cur_drv
= get_cur_drv(fdctrl
);
1622 if (fdctrl
->fifo
[2] + cur_drv
->track
>= cur_drv
->max_track
) {
1623 cur_drv
->track
= cur_drv
->max_track
- 1;
1625 cur_drv
->track
+= fdctrl
->fifo
[2];
1627 fdctrl_reset_fifo(fdctrl
);
1628 /* Raise Interrupt */
1629 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1632 static void fdctrl_handle_relative_seek_in(FDCtrl
*fdctrl
, int direction
)
1636 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1637 cur_drv
= get_cur_drv(fdctrl
);
1638 if (fdctrl
->fifo
[2] > cur_drv
->track
) {
1641 cur_drv
->track
-= fdctrl
->fifo
[2];
1643 fdctrl_reset_fifo(fdctrl
);
1644 /* Raise Interrupt */
1645 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1648 static const struct {
1653 void (*handler
)(FDCtrl
*fdctrl
, int direction
);
1656 { FD_CMD_READ
, 0x1f, "READ", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1657 { FD_CMD_WRITE
, 0x3f, "WRITE", 8, fdctrl_start_transfer
, FD_DIR_WRITE
},
1658 { FD_CMD_SEEK
, 0xff, "SEEK", 2, fdctrl_handle_seek
},
1659 { FD_CMD_SENSE_INTERRUPT_STATUS
, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status
},
1660 { FD_CMD_RECALIBRATE
, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate
},
1661 { FD_CMD_FORMAT_TRACK
, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track
},
1662 { FD_CMD_READ_TRACK
, 0xbf, "READ TRACK", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1663 { FD_CMD_RESTORE
, 0xff, "RESTORE", 17, fdctrl_handle_restore
}, /* part of READ DELETED DATA */
1664 { FD_CMD_SAVE
, 0xff, "SAVE", 0, fdctrl_handle_save
}, /* part of READ DELETED DATA */
1665 { FD_CMD_READ_DELETED
, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_READ
},
1666 { FD_CMD_SCAN_EQUAL
, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANE
},
1667 { FD_CMD_VERIFY
, 0x1f, "VERIFY", 8, fdctrl_unimplemented
},
1668 { FD_CMD_SCAN_LOW_OR_EQUAL
, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANL
},
1669 { FD_CMD_SCAN_HIGH_OR_EQUAL
, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANH
},
1670 { FD_CMD_WRITE_DELETED
, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_WRITE
},
1671 { FD_CMD_READ_ID
, 0xbf, "READ ID", 1, fdctrl_handle_readid
},
1672 { FD_CMD_SPECIFY
, 0xff, "SPECIFY", 2, fdctrl_handle_specify
},
1673 { FD_CMD_SENSE_DRIVE_STATUS
, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status
},
1674 { FD_CMD_PERPENDICULAR_MODE
, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode
},
1675 { FD_CMD_CONFIGURE
, 0xff, "CONFIGURE", 3, fdctrl_handle_configure
},
1676 { FD_CMD_POWERDOWN_MODE
, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode
},
1677 { FD_CMD_OPTION
, 0xff, "OPTION", 1, fdctrl_handle_option
},
1678 { FD_CMD_DRIVE_SPECIFICATION_COMMAND
, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command
},
1679 { FD_CMD_RELATIVE_SEEK_OUT
, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out
},
1680 { FD_CMD_FORMAT_AND_WRITE
, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented
},
1681 { FD_CMD_RELATIVE_SEEK_IN
, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in
},
1682 { FD_CMD_LOCK
, 0x7f, "LOCK", 0, fdctrl_handle_lock
},
1683 { FD_CMD_DUMPREG
, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg
},
1684 { FD_CMD_VERSION
, 0xff, "VERSION", 0, fdctrl_handle_version
},
1685 { FD_CMD_PART_ID
, 0xff, "PART ID", 0, fdctrl_handle_partid
},
1686 { FD_CMD_WRITE
, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer
, FD_DIR_WRITE
}, /* not in specification ; BeOS 4.5 bug */
1687 { 0, 0, "unknown", 0, fdctrl_unimplemented
}, /* default handler */
1689 /* Associate command to an index in the 'handlers' array */
1690 static uint8_t command_to_handler
[256];
1692 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
)
1698 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1699 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1702 if (!(fdctrl
->msr
& FD_MSR_RQM
) || (fdctrl
->msr
& FD_MSR_DIO
)) {
1703 FLOPPY_ERROR("controller not ready for writing\n");
1706 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1707 /* Is it write command time ? */
1708 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1709 /* FIFO data write */
1710 pos
= fdctrl
->data_pos
++;
1711 pos
%= FD_SECTOR_LEN
;
1712 fdctrl
->fifo
[pos
] = value
;
1713 if (pos
== FD_SECTOR_LEN
- 1 ||
1714 fdctrl
->data_pos
== fdctrl
->data_len
) {
1715 cur_drv
= get_cur_drv(fdctrl
);
1716 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1717 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv
));
1720 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1721 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1722 fd_sector(cur_drv
));
1726 /* Switch from transfer mode to status mode
1727 * then from status mode to command mode
1729 if (fdctrl
->data_pos
== fdctrl
->data_len
)
1730 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1733 if (fdctrl
->data_pos
== 0) {
1735 pos
= command_to_handler
[value
& 0xff];
1736 FLOPPY_DPRINTF("%s command\n", handlers
[pos
].name
);
1737 fdctrl
->data_len
= handlers
[pos
].parameters
+ 1;
1740 FLOPPY_DPRINTF("%s: %02x\n", __func__
, value
);
1741 fdctrl
->fifo
[fdctrl
->data_pos
++] = value
;
1742 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
1743 /* We now have all parameters
1744 * and will be able to treat the command
1746 if (fdctrl
->data_state
& FD_STATE_FORMAT
) {
1747 fdctrl_format_sector(fdctrl
);
1751 pos
= command_to_handler
[fdctrl
->fifo
[0] & 0xff];
1752 FLOPPY_DPRINTF("treat %s command\n", handlers
[pos
].name
);
1753 (*handlers
[pos
].handler
)(fdctrl
, handlers
[pos
].direction
);
1757 static void fdctrl_result_timer(void *opaque
)
1759 FDCtrl
*fdctrl
= opaque
;
1760 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1762 /* Pretend we are spinning.
1763 * This is needed for Coherent, which uses READ ID to check for
1764 * sector interleaving.
1766 if (cur_drv
->last_sect
!= 0) {
1767 cur_drv
->sect
= (cur_drv
->sect
% cur_drv
->last_sect
) + 1;
1769 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1772 static void fdctrl_change_cb(void *opaque
, bool load
)
1774 FDrive
*drive
= opaque
;
1776 drive
->media_changed
= 1;
1779 static const BlockDevOps fdctrl_block_ops
= {
1780 .change_media_cb
= fdctrl_change_cb
,
1783 /* Init functions */
1784 static int fdctrl_connect_drives(FDCtrl
*fdctrl
)
1789 for (i
= 0; i
< MAX_FD
; i
++) {
1790 drive
= &fdctrl
->drives
[i
];
1793 if (bdrv_get_on_error(drive
->bs
, 0) != BLOCK_ERR_STOP_ENOSPC
) {
1794 error_report("fdc doesn't support drive option werror");
1797 if (bdrv_get_on_error(drive
->bs
, 1) != BLOCK_ERR_REPORT
) {
1798 error_report("fdc doesn't support drive option rerror");
1804 fd_revalidate(drive
);
1806 drive
->media_changed
= 1;
1807 bdrv_set_dev_ops(drive
->bs
, &fdctrl_block_ops
, drive
);
1813 void fdctrl_init_sysbus(qemu_irq irq
, int dma_chann
,
1814 target_phys_addr_t mmio_base
, DriveInfo
**fds
)
1820 dev
= qdev_create(NULL
, "sysbus-fdc");
1821 sys
= DO_UPCAST(FDCtrlSysBus
, busdev
.qdev
, dev
);
1822 fdctrl
= &sys
->state
;
1823 fdctrl
->dma_chann
= dma_chann
; /* FIXME */
1825 qdev_prop_set_drive_nofail(dev
, "driveA", fds
[0]->bdrv
);
1828 qdev_prop_set_drive_nofail(dev
, "driveB", fds
[1]->bdrv
);
1830 qdev_init_nofail(dev
);
1831 sysbus_connect_irq(&sys
->busdev
, 0, irq
);
1832 sysbus_mmio_map(&sys
->busdev
, 0, mmio_base
);
1835 void sun4m_fdctrl_init(qemu_irq irq
, target_phys_addr_t io_base
,
1836 DriveInfo
**fds
, qemu_irq
*fdc_tc
)
1841 dev
= qdev_create(NULL
, "SUNW,fdtwo");
1843 qdev_prop_set_drive_nofail(dev
, "drive", fds
[0]->bdrv
);
1845 qdev_init_nofail(dev
);
1846 sys
= DO_UPCAST(FDCtrlSysBus
, busdev
.qdev
, dev
);
1847 sysbus_connect_irq(&sys
->busdev
, 0, irq
);
1848 sysbus_mmio_map(&sys
->busdev
, 0, io_base
);
1849 *fdc_tc
= qdev_get_gpio_in(dev
, 0);
1852 static int fdctrl_init_common(FDCtrl
*fdctrl
)
1855 static int command_tables_inited
= 0;
1857 /* Fill 'command_to_handler' lookup table */
1858 if (!command_tables_inited
) {
1859 command_tables_inited
= 1;
1860 for (i
= ARRAY_SIZE(handlers
) - 1; i
>= 0; i
--) {
1861 for (j
= 0; j
< sizeof(command_to_handler
); j
++) {
1862 if ((j
& handlers
[i
].mask
) == handlers
[i
].value
) {
1863 command_to_handler
[j
] = i
;
1869 FLOPPY_DPRINTF("init controller\n");
1870 fdctrl
->fifo
= qemu_memalign(512, FD_SECTOR_LEN
);
1871 fdctrl
->fifo_size
= 512;
1872 fdctrl
->result_timer
= qemu_new_timer_ns(vm_clock
,
1873 fdctrl_result_timer
, fdctrl
);
1875 fdctrl
->version
= 0x90; /* Intel 82078 controller */
1876 fdctrl
->config
= FD_CONFIG_EIS
| FD_CONFIG_EFIFO
; /* Implicit seek, polling & FIFO enabled */
1877 fdctrl
->num_floppies
= MAX_FD
;
1879 if (fdctrl
->dma_chann
!= -1)
1880 DMA_register_channel(fdctrl
->dma_chann
, &fdctrl_transfer_handler
, fdctrl
);
1881 return fdctrl_connect_drives(fdctrl
);
1884 static const MemoryRegionPortio fdc_portio_list
[] = {
1885 { 1, 5, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
1886 { 7, 1, 1, .read
= fdctrl_read
, .write
= fdctrl_write
},
1887 PORTIO_END_OF_LIST(),
1890 static int isabus_fdc_init1(ISADevice
*dev
)
1892 FDCtrlISABus
*isa
= DO_UPCAST(FDCtrlISABus
, busdev
, dev
);
1893 FDCtrl
*fdctrl
= &isa
->state
;
1899 isa_register_portio_list(dev
, iobase
, fdc_portio_list
, fdctrl
, "fdc");
1901 isa_init_irq(&isa
->busdev
, &fdctrl
->irq
, isairq
);
1902 fdctrl
->dma_chann
= dma_chann
;
1904 qdev_set_legacy_instance_id(&dev
->qdev
, iobase
, 2);
1905 ret
= fdctrl_init_common(fdctrl
);
1907 add_boot_device_path(isa
->bootindexA
, &dev
->qdev
, "/floppy@0");
1908 add_boot_device_path(isa
->bootindexB
, &dev
->qdev
, "/floppy@1");
1913 static int sysbus_fdc_init1(SysBusDevice
*dev
)
1915 FDCtrlSysBus
*sys
= DO_UPCAST(FDCtrlSysBus
, busdev
, dev
);
1916 FDCtrl
*fdctrl
= &sys
->state
;
1920 io
= cpu_register_io_memory(fdctrl_mem_read
, fdctrl_mem_write
, fdctrl
,
1921 DEVICE_NATIVE_ENDIAN
);
1922 sysbus_init_mmio(dev
, 0x08, io
);
1923 sysbus_init_irq(dev
, &fdctrl
->irq
);
1924 qdev_init_gpio_in(&dev
->qdev
, fdctrl_handle_tc
, 1);
1925 fdctrl
->dma_chann
= -1;
1927 qdev_set_legacy_instance_id(&dev
->qdev
, io
, 2);
1928 ret
= fdctrl_init_common(fdctrl
);
1933 static int sun4m_fdc_init1(SysBusDevice
*dev
)
1935 FDCtrl
*fdctrl
= &(FROM_SYSBUS(FDCtrlSysBus
, dev
)->state
);
1938 io
= cpu_register_io_memory(fdctrl_mem_read_strict
,
1939 fdctrl_mem_write_strict
, fdctrl
,
1940 DEVICE_NATIVE_ENDIAN
);
1941 sysbus_init_mmio(dev
, 0x08, io
);
1942 sysbus_init_irq(dev
, &fdctrl
->irq
);
1943 qdev_init_gpio_in(&dev
->qdev
, fdctrl_handle_tc
, 1);
1946 qdev_set_legacy_instance_id(&dev
->qdev
, io
, 2);
1947 return fdctrl_init_common(fdctrl
);
1950 void fdc_get_bs(BlockDriverState
*bs
[], ISADevice
*dev
)
1952 FDCtrlISABus
*isa
= DO_UPCAST(FDCtrlISABus
, busdev
, dev
);
1953 FDCtrl
*fdctrl
= &isa
->state
;
1956 for (i
= 0; i
< MAX_FD
; i
++) {
1957 bs
[i
] = fdctrl
->drives
[i
].bs
;
1962 static const VMStateDescription vmstate_isa_fdc
={
1965 .minimum_version_id
= 2,
1966 .fields
= (VMStateField
[]) {
1967 VMSTATE_STRUCT(state
, FDCtrlISABus
, 0, vmstate_fdc
, FDCtrl
),
1968 VMSTATE_END_OF_LIST()
1972 static ISADeviceInfo isa_fdc_info
= {
1973 .init
= isabus_fdc_init1
,
1974 .qdev
.name
= "isa-fdc",
1975 .qdev
.fw_name
= "fdc",
1976 .qdev
.size
= sizeof(FDCtrlISABus
),
1978 .qdev
.vmsd
= &vmstate_isa_fdc
,
1979 .qdev
.reset
= fdctrl_external_reset_isa
,
1980 .qdev
.props
= (Property
[]) {
1981 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus
, state
.drives
[0].bs
),
1982 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus
, state
.drives
[1].bs
),
1983 DEFINE_PROP_INT32("bootindexA", FDCtrlISABus
, bootindexA
, -1),
1984 DEFINE_PROP_INT32("bootindexB", FDCtrlISABus
, bootindexB
, -1),
1985 DEFINE_PROP_END_OF_LIST(),
1989 static const VMStateDescription vmstate_sysbus_fdc
={
1992 .minimum_version_id
= 2,
1993 .fields
= (VMStateField
[]) {
1994 VMSTATE_STRUCT(state
, FDCtrlSysBus
, 0, vmstate_fdc
, FDCtrl
),
1995 VMSTATE_END_OF_LIST()
1999 static SysBusDeviceInfo sysbus_fdc_info
= {
2000 .init
= sysbus_fdc_init1
,
2001 .qdev
.name
= "sysbus-fdc",
2002 .qdev
.size
= sizeof(FDCtrlSysBus
),
2003 .qdev
.vmsd
= &vmstate_sysbus_fdc
,
2004 .qdev
.reset
= fdctrl_external_reset_sysbus
,
2005 .qdev
.props
= (Property
[]) {
2006 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus
, state
.drives
[0].bs
),
2007 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus
, state
.drives
[1].bs
),
2008 DEFINE_PROP_END_OF_LIST(),
2012 static SysBusDeviceInfo sun4m_fdc_info
= {
2013 .init
= sun4m_fdc_init1
,
2014 .qdev
.name
= "SUNW,fdtwo",
2015 .qdev
.size
= sizeof(FDCtrlSysBus
),
2016 .qdev
.vmsd
= &vmstate_sysbus_fdc
,
2017 .qdev
.reset
= fdctrl_external_reset_sysbus
,
2018 .qdev
.props
= (Property
[]) {
2019 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus
, state
.drives
[0].bs
),
2020 DEFINE_PROP_END_OF_LIST(),
2024 static void fdc_register_devices(void)
2026 isa_qdev_register(&isa_fdc_info
);
2027 sysbus_register_withprop(&sysbus_fdc_info
);
2028 sysbus_register_withprop(&sun4m_fdc_info
);
2031 device_init(fdc_register_devices
)