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-timer.h"
35 #include "qdev-addr.h"
37 /********************************************************/
38 /* debug Floppy devices */
39 //#define DEBUG_FLOPPY
42 #define FLOPPY_DPRINTF(fmt, ...) \
43 do { printf("FLOPPY: " fmt , ## __VA_ARGS__); } while (0)
45 #define FLOPPY_DPRINTF(fmt, ...)
48 #define FLOPPY_ERROR(fmt, ...) \
49 do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ## __VA_ARGS__); } while (0)
51 /********************************************************/
52 /* Floppy drive emulation */
54 #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
55 #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
57 /* Will always be a fixed parameter for us */
58 #define FD_SECTOR_LEN 512
59 #define FD_SECTOR_SC 2 /* Sector size code */
60 #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
62 /* Floppy disk drive emulation */
63 typedef enum FDiskType
{
64 FDRIVE_DISK_288
= 0x01, /* 2.88 MB disk */
65 FDRIVE_DISK_144
= 0x02, /* 1.44 MB disk */
66 FDRIVE_DISK_720
= 0x03, /* 720 kB disk */
67 FDRIVE_DISK_USER
= 0x04, /* User defined geometry */
68 FDRIVE_DISK_NONE
= 0x05, /* No disk */
71 typedef enum FDriveType
{
72 FDRIVE_DRV_144
= 0x00, /* 1.44 MB 3"5 drive */
73 FDRIVE_DRV_288
= 0x01, /* 2.88 MB 3"5 drive */
74 FDRIVE_DRV_120
= 0x02, /* 1.2 MB 5"25 drive */
75 FDRIVE_DRV_NONE
= 0x03, /* No drive connected */
78 typedef enum FDiskFlags
{
79 FDISK_DBL_SIDES
= 0x01,
82 typedef struct FDrive
{
86 uint8_t perpendicular
; /* 2.88 MB access mode */
93 uint8_t last_sect
; /* Nb sector per track */
94 uint8_t max_track
; /* Nb of tracks */
95 uint16_t bps
; /* Bytes per sector */
96 uint8_t ro
; /* Is read-only */
99 static void fd_init(FDrive
*drv
)
102 drv
->drive
= FDRIVE_DRV_NONE
;
103 drv
->perpendicular
= 0;
109 static int fd_sector_calc(uint8_t head
, uint8_t track
, uint8_t sect
,
112 return (((track
* 2) + head
) * last_sect
) + sect
- 1;
115 /* Returns current position, in sectors, for given drive */
116 static int fd_sector(FDrive
*drv
)
118 return fd_sector_calc(drv
->head
, drv
->track
, drv
->sect
, drv
->last_sect
);
121 /* Seek to a new position:
122 * returns 0 if already on right track
123 * returns 1 if track changed
124 * returns 2 if track is invalid
125 * returns 3 if sector is invalid
126 * returns 4 if seek is disabled
128 static int fd_seek(FDrive
*drv
, uint8_t head
, uint8_t track
, uint8_t sect
,
134 if (track
> drv
->max_track
||
135 (head
!= 0 && (drv
->flags
& FDISK_DBL_SIDES
) == 0)) {
136 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
137 head
, track
, sect
, 1,
138 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
139 drv
->max_track
, drv
->last_sect
);
142 if (sect
> drv
->last_sect
) {
143 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
144 head
, track
, sect
, 1,
145 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
146 drv
->max_track
, drv
->last_sect
);
149 sector
= fd_sector_calc(head
, track
, sect
, drv
->last_sect
);
151 if (sector
!= fd_sector(drv
)) {
154 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
155 head
, track
, sect
, 1, drv
->max_track
, drv
->last_sect
);
160 if (drv
->track
!= track
)
169 /* Set drive back to track 0 */
170 static void fd_recalibrate(FDrive
*drv
)
172 FLOPPY_DPRINTF("recalibrate\n");
178 /* Recognize floppy formats */
179 typedef struct FDFormat
{
188 static const FDFormat fd_formats
[] = {
189 /* First entry is default format */
190 /* 1.44 MB 3"1/2 floppy disks */
191 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 18, 80, 1, "1.44 MB 3\"1/2", },
192 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 20, 80, 1, "1.6 MB 3\"1/2", },
193 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 21, 80, 1, "1.68 MB 3\"1/2", },
194 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 21, 82, 1, "1.72 MB 3\"1/2", },
195 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 21, 83, 1, "1.74 MB 3\"1/2", },
196 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 22, 80, 1, "1.76 MB 3\"1/2", },
197 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 23, 80, 1, "1.84 MB 3\"1/2", },
198 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 24, 80, 1, "1.92 MB 3\"1/2", },
199 /* 2.88 MB 3"1/2 floppy disks */
200 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 36, 80, 1, "2.88 MB 3\"1/2", },
201 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 39, 80, 1, "3.12 MB 3\"1/2", },
202 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 40, 80, 1, "3.2 MB 3\"1/2", },
203 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 44, 80, 1, "3.52 MB 3\"1/2", },
204 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 48, 80, 1, "3.84 MB 3\"1/2", },
205 /* 720 kB 3"1/2 floppy disks */
206 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 9, 80, 1, "720 kB 3\"1/2", },
207 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 10, 80, 1, "800 kB 3\"1/2", },
208 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 10, 82, 1, "820 kB 3\"1/2", },
209 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 10, 83, 1, "830 kB 3\"1/2", },
210 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 13, 80, 1, "1.04 MB 3\"1/2", },
211 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 14, 80, 1, "1.12 MB 3\"1/2", },
212 /* 1.2 MB 5"1/4 floppy disks */
213 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 15, 80, 1, "1.2 kB 5\"1/4", },
214 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 18, 80, 1, "1.44 MB 5\"1/4", },
215 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 18, 82, 1, "1.48 MB 5\"1/4", },
216 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 18, 83, 1, "1.49 MB 5\"1/4", },
217 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 20, 80, 1, "1.6 MB 5\"1/4", },
218 /* 720 kB 5"1/4 floppy disks */
219 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 9, 80, 1, "720 kB 5\"1/4", },
220 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 11, 80, 1, "880 kB 5\"1/4", },
221 /* 360 kB 5"1/4 floppy disks */
222 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 9, 40, 1, "360 kB 5\"1/4", },
223 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 9, 40, 0, "180 kB 5\"1/4", },
224 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 10, 41, 1, "410 kB 5\"1/4", },
225 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 10, 42, 1, "420 kB 5\"1/4", },
226 /* 320 kB 5"1/4 floppy disks */
227 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 8, 40, 1, "320 kB 5\"1/4", },
228 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 8, 40, 0, "160 kB 5\"1/4", },
229 /* 360 kB must match 5"1/4 better than 3"1/2... */
230 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 9, 80, 0, "360 kB 3\"1/2", },
232 { FDRIVE_DRV_NONE
, FDRIVE_DISK_NONE
, -1, -1, 0, NULL
, },
235 /* Revalidate a disk drive after a disk change */
236 static void fd_revalidate(FDrive
*drv
)
238 const FDFormat
*parse
;
239 uint64_t nb_sectors
, size
;
240 int i
, first_match
, match
;
241 int nb_heads
, max_track
, last_sect
, ro
;
243 FLOPPY_DPRINTF("revalidate\n");
244 if (drv
->bs
!= NULL
&& bdrv_is_inserted(drv
->bs
)) {
245 ro
= bdrv_is_read_only(drv
->bs
);
246 bdrv_get_geometry_hint(drv
->bs
, &nb_heads
, &max_track
, &last_sect
);
247 if (nb_heads
!= 0 && max_track
!= 0 && last_sect
!= 0) {
248 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
249 nb_heads
- 1, max_track
, last_sect
);
251 bdrv_get_geometry(drv
->bs
, &nb_sectors
);
255 parse
= &fd_formats
[i
];
256 if (parse
->drive
== FDRIVE_DRV_NONE
)
258 if (drv
->drive
== parse
->drive
||
259 drv
->drive
== FDRIVE_DRV_NONE
) {
260 size
= (parse
->max_head
+ 1) * parse
->max_track
*
262 if (nb_sectors
== size
) {
266 if (first_match
== -1)
271 if (first_match
== -1)
275 parse
= &fd_formats
[match
];
277 nb_heads
= parse
->max_head
+ 1;
278 max_track
= parse
->max_track
;
279 last_sect
= parse
->last_sect
;
280 drv
->drive
= parse
->drive
;
281 FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse
->str
,
282 nb_heads
, max_track
, last_sect
, ro
? "ro" : "rw");
285 drv
->flags
&= ~FDISK_DBL_SIDES
;
287 drv
->flags
|= FDISK_DBL_SIDES
;
289 drv
->max_track
= max_track
;
290 drv
->last_sect
= last_sect
;
293 FLOPPY_DPRINTF("No disk in drive\n");
296 drv
->flags
&= ~FDISK_DBL_SIDES
;
300 /********************************************************/
301 /* Intel 82078 floppy disk controller emulation */
303 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
);
304 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
);
305 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
306 int dma_pos
, int dma_len
);
307 static void fdctrl_raise_irq(FDCtrl
*fdctrl
, uint8_t status0
);
309 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
);
310 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
);
311 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
);
312 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
);
313 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
);
314 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
);
315 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
);
316 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
);
317 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
);
318 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
);
319 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
);
330 FD_STATE_MULTI
= 0x01, /* multi track flag */
331 FD_STATE_FORMAT
= 0x02, /* format flag */
332 FD_STATE_SEEK
= 0x04, /* seek flag */
347 FD_CMD_READ_TRACK
= 0x02,
348 FD_CMD_SPECIFY
= 0x03,
349 FD_CMD_SENSE_DRIVE_STATUS
= 0x04,
352 FD_CMD_RECALIBRATE
= 0x07,
353 FD_CMD_SENSE_INTERRUPT_STATUS
= 0x08,
354 FD_CMD_WRITE_DELETED
= 0x09,
355 FD_CMD_READ_ID
= 0x0a,
356 FD_CMD_READ_DELETED
= 0x0c,
357 FD_CMD_FORMAT_TRACK
= 0x0d,
358 FD_CMD_DUMPREG
= 0x0e,
360 FD_CMD_VERSION
= 0x10,
361 FD_CMD_SCAN_EQUAL
= 0x11,
362 FD_CMD_PERPENDICULAR_MODE
= 0x12,
363 FD_CMD_CONFIGURE
= 0x13,
365 FD_CMD_VERIFY
= 0x16,
366 FD_CMD_POWERDOWN_MODE
= 0x17,
367 FD_CMD_PART_ID
= 0x18,
368 FD_CMD_SCAN_LOW_OR_EQUAL
= 0x19,
369 FD_CMD_SCAN_HIGH_OR_EQUAL
= 0x1d,
371 FD_CMD_OPTION
= 0x33,
372 FD_CMD_RESTORE
= 0x4e,
373 FD_CMD_DRIVE_SPECIFICATION_COMMAND
= 0x8e,
374 FD_CMD_RELATIVE_SEEK_OUT
= 0x8f,
375 FD_CMD_FORMAT_AND_WRITE
= 0xcd,
376 FD_CMD_RELATIVE_SEEK_IN
= 0xcf,
380 FD_CONFIG_PRETRK
= 0xff, /* Pre-compensation set to track 0 */
381 FD_CONFIG_FIFOTHR
= 0x0f, /* FIFO threshold set to 1 byte */
382 FD_CONFIG_POLL
= 0x10, /* Poll enabled */
383 FD_CONFIG_EFIFO
= 0x20, /* FIFO disabled */
384 FD_CONFIG_EIS
= 0x40, /* No implied seeks */
390 FD_SR0_ABNTERM
= 0x40,
391 FD_SR0_INVCMD
= 0x80,
392 FD_SR0_RDYCHG
= 0xc0,
396 FD_SR1_EC
= 0x80, /* End of cylinder */
400 FD_SR2_SNS
= 0x04, /* Scan not satisfied */
401 FD_SR2_SEH
= 0x08, /* Scan equal hit */
412 FD_SRA_INTPEND
= 0x80,
426 FD_DOR_SELMASK
= 0x03,
428 FD_DOR_SELMASK
= 0x01,
430 FD_DOR_nRESET
= 0x04,
432 FD_DOR_MOTEN0
= 0x10,
433 FD_DOR_MOTEN1
= 0x20,
434 FD_DOR_MOTEN2
= 0x40,
435 FD_DOR_MOTEN3
= 0x80,
440 FD_TDR_BOOTSEL
= 0x0c,
442 FD_TDR_BOOTSEL
= 0x04,
447 FD_DSR_DRATEMASK
= 0x03,
448 FD_DSR_PWRDOWN
= 0x40,
449 FD_DSR_SWRESET
= 0x80,
453 FD_MSR_DRV0BUSY
= 0x01,
454 FD_MSR_DRV1BUSY
= 0x02,
455 FD_MSR_DRV2BUSY
= 0x04,
456 FD_MSR_DRV3BUSY
= 0x08,
457 FD_MSR_CMDBUSY
= 0x10,
458 FD_MSR_NONDMA
= 0x20,
464 FD_DIR_DSKCHG
= 0x80,
467 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
468 #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
469 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
472 /* Controller's identification */
477 /* Controller state */
478 QEMUTimer
*result_timer
;
482 uint8_t dor_vmstate
; /* only used as temp during vmstate */
497 uint8_t eot
; /* last wanted sector */
498 /* States kept only to be returned back */
502 /* precompensation */
506 /* Power down config (also with status regB access mode */
511 uint8_t num_floppies
;
512 FDrive drives
[MAX_FD
];
516 typedef struct FDCtrlSysBus
{
521 typedef struct FDCtrlISABus
{
526 static uint32_t fdctrl_read (void *opaque
, uint32_t reg
)
528 FDCtrl
*fdctrl
= opaque
;
533 retval
= fdctrl_read_statusA(fdctrl
);
536 retval
= fdctrl_read_statusB(fdctrl
);
539 retval
= fdctrl_read_dor(fdctrl
);
542 retval
= fdctrl_read_tape(fdctrl
);
545 retval
= fdctrl_read_main_status(fdctrl
);
548 retval
= fdctrl_read_data(fdctrl
);
551 retval
= fdctrl_read_dir(fdctrl
);
554 retval
= (uint32_t)(-1);
557 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg
& 7, retval
);
562 static void fdctrl_write (void *opaque
, uint32_t reg
, uint32_t value
)
564 FDCtrl
*fdctrl
= opaque
;
566 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg
& 7, value
);
570 fdctrl_write_dor(fdctrl
, value
);
573 fdctrl_write_tape(fdctrl
, value
);
576 fdctrl_write_rate(fdctrl
, value
);
579 fdctrl_write_data(fdctrl
, value
);
586 static uint32_t fdctrl_read_port (void *opaque
, uint32_t reg
)
588 return fdctrl_read(opaque
, reg
& 7);
591 static void fdctrl_write_port (void *opaque
, uint32_t reg
, uint32_t value
)
593 fdctrl_write(opaque
, reg
& 7, value
);
596 static uint32_t fdctrl_read_mem (void *opaque
, target_phys_addr_t reg
)
598 return fdctrl_read(opaque
, (uint32_t)reg
);
601 static void fdctrl_write_mem (void *opaque
,
602 target_phys_addr_t reg
, uint32_t value
)
604 fdctrl_write(opaque
, (uint32_t)reg
, value
);
607 static CPUReadMemoryFunc
* const fdctrl_mem_read
[3] = {
613 static CPUWriteMemoryFunc
* const fdctrl_mem_write
[3] = {
619 static CPUReadMemoryFunc
* const fdctrl_mem_read_strict
[3] = {
625 static CPUWriteMemoryFunc
* const fdctrl_mem_write_strict
[3] = {
631 static const VMStateDescription vmstate_fdrive
= {
634 .minimum_version_id
= 1,
635 .minimum_version_id_old
= 1,
636 .fields
= (VMStateField
[]) {
637 VMSTATE_UINT8(head
, FDrive
),
638 VMSTATE_UINT8(track
, FDrive
),
639 VMSTATE_UINT8(sect
, FDrive
),
640 VMSTATE_END_OF_LIST()
644 static void fdc_pre_save(void *opaque
)
648 s
->dor_vmstate
= s
->dor
| GET_CUR_DRV(s
);
651 static int fdc_post_load(void *opaque
, int version_id
)
655 SET_CUR_DRV(s
, s
->dor_vmstate
& FD_DOR_SELMASK
);
656 s
->dor
= s
->dor_vmstate
& ~FD_DOR_SELMASK
;
660 static const VMStateDescription vmstate_fdc
= {
663 .minimum_version_id
= 2,
664 .minimum_version_id_old
= 2,
665 .pre_save
= fdc_pre_save
,
666 .post_load
= fdc_post_load
,
667 .fields
= (VMStateField
[]) {
668 /* Controller State */
669 VMSTATE_UINT8(sra
, FDCtrl
),
670 VMSTATE_UINT8(srb
, FDCtrl
),
671 VMSTATE_UINT8(dor_vmstate
, FDCtrl
),
672 VMSTATE_UINT8(tdr
, FDCtrl
),
673 VMSTATE_UINT8(dsr
, FDCtrl
),
674 VMSTATE_UINT8(msr
, FDCtrl
),
675 VMSTATE_UINT8(status0
, FDCtrl
),
676 VMSTATE_UINT8(status1
, FDCtrl
),
677 VMSTATE_UINT8(status2
, FDCtrl
),
679 VMSTATE_VARRAY_INT32(fifo
, FDCtrl
, fifo_size
, 0, vmstate_info_uint8
,
681 VMSTATE_UINT32(data_pos
, FDCtrl
),
682 VMSTATE_UINT32(data_len
, FDCtrl
),
683 VMSTATE_UINT8(data_state
, FDCtrl
),
684 VMSTATE_UINT8(data_dir
, FDCtrl
),
685 VMSTATE_UINT8(eot
, FDCtrl
),
686 /* States kept only to be returned back */
687 VMSTATE_UINT8(timer0
, FDCtrl
),
688 VMSTATE_UINT8(timer1
, FDCtrl
),
689 VMSTATE_UINT8(precomp_trk
, FDCtrl
),
690 VMSTATE_UINT8(config
, FDCtrl
),
691 VMSTATE_UINT8(lock
, FDCtrl
),
692 VMSTATE_UINT8(pwrd
, FDCtrl
),
693 VMSTATE_UINT8_EQUAL(num_floppies
, FDCtrl
),
694 VMSTATE_STRUCT_ARRAY(drives
, FDCtrl
, MAX_FD
, 1,
695 vmstate_fdrive
, FDrive
),
696 VMSTATE_END_OF_LIST()
700 static void fdctrl_external_reset_sysbus(DeviceState
*d
)
702 FDCtrlSysBus
*sys
= container_of(d
, FDCtrlSysBus
, busdev
.qdev
);
703 FDCtrl
*s
= &sys
->state
;
708 static void fdctrl_external_reset_isa(DeviceState
*d
)
710 FDCtrlISABus
*isa
= container_of(d
, FDCtrlISABus
, busdev
.qdev
);
711 FDCtrl
*s
= &isa
->state
;
716 static void fdctrl_handle_tc(void *opaque
, int irq
, int level
)
718 //FDCtrl *s = opaque;
722 FLOPPY_DPRINTF("TC pulsed\n");
726 /* XXX: may change if moved to bdrv */
727 int fdctrl_get_drive_type(FDCtrl
*fdctrl
, int drive_num
)
729 return fdctrl
->drives
[drive_num
].drive
;
732 /* Change IRQ state */
733 static void fdctrl_reset_irq(FDCtrl
*fdctrl
)
735 if (!(fdctrl
->sra
& FD_SRA_INTPEND
))
737 FLOPPY_DPRINTF("Reset interrupt\n");
738 qemu_set_irq(fdctrl
->irq
, 0);
739 fdctrl
->sra
&= ~FD_SRA_INTPEND
;
742 static void fdctrl_raise_irq(FDCtrl
*fdctrl
, uint8_t status0
)
745 if (fdctrl
->sun4m
&& (fdctrl
->msr
& FD_MSR_CMDBUSY
)) {
747 fdctrl
->msr
&= ~FD_MSR_CMDBUSY
;
748 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
749 fdctrl
->status0
= status0
;
752 if (!(fdctrl
->sra
& FD_SRA_INTPEND
)) {
753 qemu_set_irq(fdctrl
->irq
, 1);
754 fdctrl
->sra
|= FD_SRA_INTPEND
;
756 fdctrl
->reset_sensei
= 0;
757 fdctrl
->status0
= status0
;
758 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl
->status0
);
761 /* Reset controller */
762 static void fdctrl_reset(FDCtrl
*fdctrl
, int do_irq
)
766 FLOPPY_DPRINTF("reset controller\n");
767 fdctrl_reset_irq(fdctrl
);
768 /* Initialise controller */
771 if (!fdctrl
->drives
[1].bs
)
772 fdctrl
->sra
|= FD_SRA_nDRV2
;
774 fdctrl
->dor
= FD_DOR_nRESET
;
775 fdctrl
->dor
|= (fdctrl
->dma_chann
!= -1) ? FD_DOR_DMAEN
: 0;
776 fdctrl
->msr
= FD_MSR_RQM
;
778 fdctrl
->data_pos
= 0;
779 fdctrl
->data_len
= 0;
780 fdctrl
->data_state
= 0;
781 fdctrl
->data_dir
= FD_DIR_WRITE
;
782 for (i
= 0; i
< MAX_FD
; i
++)
783 fd_recalibrate(&fdctrl
->drives
[i
]);
784 fdctrl_reset_fifo(fdctrl
);
786 fdctrl_raise_irq(fdctrl
, FD_SR0_RDYCHG
);
787 fdctrl
->reset_sensei
= FD_RESET_SENSEI_COUNT
;
791 static inline FDrive
*drv0(FDCtrl
*fdctrl
)
793 return &fdctrl
->drives
[(fdctrl
->tdr
& FD_TDR_BOOTSEL
) >> 2];
796 static inline FDrive
*drv1(FDCtrl
*fdctrl
)
798 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (1 << 2))
799 return &fdctrl
->drives
[1];
801 return &fdctrl
->drives
[0];
805 static inline FDrive
*drv2(FDCtrl
*fdctrl
)
807 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (2 << 2))
808 return &fdctrl
->drives
[2];
810 return &fdctrl
->drives
[1];
813 static inline FDrive
*drv3(FDCtrl
*fdctrl
)
815 if ((fdctrl
->tdr
& FD_TDR_BOOTSEL
) < (3 << 2))
816 return &fdctrl
->drives
[3];
818 return &fdctrl
->drives
[2];
822 static FDrive
*get_cur_drv(FDCtrl
*fdctrl
)
824 switch (fdctrl
->cur_drv
) {
825 case 0: return drv0(fdctrl
);
826 case 1: return drv1(fdctrl
);
828 case 2: return drv2(fdctrl
);
829 case 3: return drv3(fdctrl
);
831 default: return NULL
;
835 /* Status A register : 0x00 (read-only) */
836 static uint32_t fdctrl_read_statusA(FDCtrl
*fdctrl
)
838 uint32_t retval
= fdctrl
->sra
;
840 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval
);
845 /* Status B register : 0x01 (read-only) */
846 static uint32_t fdctrl_read_statusB(FDCtrl
*fdctrl
)
848 uint32_t retval
= fdctrl
->srb
;
850 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval
);
855 /* Digital output register : 0x02 */
856 static uint32_t fdctrl_read_dor(FDCtrl
*fdctrl
)
858 uint32_t retval
= fdctrl
->dor
;
861 retval
|= fdctrl
->cur_drv
;
862 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval
);
867 static void fdctrl_write_dor(FDCtrl
*fdctrl
, uint32_t value
)
869 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value
);
872 if (value
& FD_DOR_MOTEN0
)
873 fdctrl
->srb
|= FD_SRB_MTR0
;
875 fdctrl
->srb
&= ~FD_SRB_MTR0
;
876 if (value
& FD_DOR_MOTEN1
)
877 fdctrl
->srb
|= FD_SRB_MTR1
;
879 fdctrl
->srb
&= ~FD_SRB_MTR1
;
883 fdctrl
->srb
|= FD_SRB_DR0
;
885 fdctrl
->srb
&= ~FD_SRB_DR0
;
888 if (!(value
& FD_DOR_nRESET
)) {
889 if (fdctrl
->dor
& FD_DOR_nRESET
) {
890 FLOPPY_DPRINTF("controller enter RESET state\n");
893 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
894 FLOPPY_DPRINTF("controller out of RESET state\n");
895 fdctrl_reset(fdctrl
, 1);
896 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
900 fdctrl
->cur_drv
= value
& FD_DOR_SELMASK
;
905 /* Tape drive register : 0x03 */
906 static uint32_t fdctrl_read_tape(FDCtrl
*fdctrl
)
908 uint32_t retval
= fdctrl
->tdr
;
910 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval
);
915 static void fdctrl_write_tape(FDCtrl
*fdctrl
, uint32_t value
)
918 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
919 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
922 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value
);
923 /* Disk boot selection indicator */
924 fdctrl
->tdr
= value
& FD_TDR_BOOTSEL
;
925 /* Tape indicators: never allow */
928 /* Main status register : 0x04 (read) */
929 static uint32_t fdctrl_read_main_status(FDCtrl
*fdctrl
)
931 uint32_t retval
= fdctrl
->msr
;
933 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
934 fdctrl
->dor
|= FD_DOR_nRESET
;
938 retval
|= FD_MSR_DIO
;
939 fdctrl_reset_irq(fdctrl
);
942 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval
);
947 /* Data select rate register : 0x04 (write) */
948 static void fdctrl_write_rate(FDCtrl
*fdctrl
, uint32_t value
)
951 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
952 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
955 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value
);
956 /* Reset: autoclear */
957 if (value
& FD_DSR_SWRESET
) {
958 fdctrl
->dor
&= ~FD_DOR_nRESET
;
959 fdctrl_reset(fdctrl
, 1);
960 fdctrl
->dor
|= FD_DOR_nRESET
;
962 if (value
& FD_DSR_PWRDOWN
) {
963 fdctrl_reset(fdctrl
, 1);
968 static int fdctrl_media_changed(FDrive
*drv
)
974 ret
= bdrv_media_changed(drv
->bs
);
981 /* Digital input register : 0x07 (read-only) */
982 static uint32_t fdctrl_read_dir(FDCtrl
*fdctrl
)
986 if (fdctrl_media_changed(drv0(fdctrl
))
987 || fdctrl_media_changed(drv1(fdctrl
))
989 || fdctrl_media_changed(drv2(fdctrl
))
990 || fdctrl_media_changed(drv3(fdctrl
))
993 retval
|= FD_DIR_DSKCHG
;
995 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval
);
1001 /* FIFO state control */
1002 static void fdctrl_reset_fifo(FDCtrl
*fdctrl
)
1004 fdctrl
->data_dir
= FD_DIR_WRITE
;
1005 fdctrl
->data_pos
= 0;
1006 fdctrl
->msr
&= ~(FD_MSR_CMDBUSY
| FD_MSR_DIO
);
1009 /* Set FIFO status for the host to read */
1010 static void fdctrl_set_fifo(FDCtrl
*fdctrl
, int fifo_len
, int do_irq
)
1012 fdctrl
->data_dir
= FD_DIR_READ
;
1013 fdctrl
->data_len
= fifo_len
;
1014 fdctrl
->data_pos
= 0;
1015 fdctrl
->msr
|= FD_MSR_CMDBUSY
| FD_MSR_RQM
| FD_MSR_DIO
;
1017 fdctrl_raise_irq(fdctrl
, 0x00);
1020 /* Set an error: unimplemented/unknown command */
1021 static void fdctrl_unimplemented(FDCtrl
*fdctrl
, int direction
)
1023 FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl
->fifo
[0]);
1024 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
1025 fdctrl_set_fifo(fdctrl
, 1, 0);
1028 /* Seek to next sector */
1029 static int fdctrl_seek_to_next_sect(FDCtrl
*fdctrl
, FDrive
*cur_drv
)
1031 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1032 cur_drv
->head
, cur_drv
->track
, cur_drv
->sect
,
1033 fd_sector(cur_drv
));
1034 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1036 if (cur_drv
->sect
>= cur_drv
->last_sect
||
1037 cur_drv
->sect
== fdctrl
->eot
) {
1039 if (FD_MULTI_TRACK(fdctrl
->data_state
)) {
1040 if (cur_drv
->head
== 0 &&
1041 (cur_drv
->flags
& FDISK_DBL_SIDES
) != 0) {
1046 if ((cur_drv
->flags
& FDISK_DBL_SIDES
) == 0)
1053 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1054 cur_drv
->head
, cur_drv
->track
,
1055 cur_drv
->sect
, fd_sector(cur_drv
));
1062 /* Callback for transfer end (stop or abort) */
1063 static void fdctrl_stop_transfer(FDCtrl
*fdctrl
, uint8_t status0
,
1064 uint8_t status1
, uint8_t status2
)
1068 cur_drv
= get_cur_drv(fdctrl
);
1069 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1070 status0
, status1
, status2
,
1071 status0
| (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
));
1072 fdctrl
->fifo
[0] = status0
| (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1073 fdctrl
->fifo
[1] = status1
;
1074 fdctrl
->fifo
[2] = status2
;
1075 fdctrl
->fifo
[3] = cur_drv
->track
;
1076 fdctrl
->fifo
[4] = cur_drv
->head
;
1077 fdctrl
->fifo
[5] = cur_drv
->sect
;
1078 fdctrl
->fifo
[6] = FD_SECTOR_SC
;
1079 fdctrl
->data_dir
= FD_DIR_READ
;
1080 if (!(fdctrl
->msr
& FD_MSR_NONDMA
)) {
1081 DMA_release_DREQ(fdctrl
->dma_chann
);
1083 fdctrl
->msr
|= FD_MSR_RQM
| FD_MSR_DIO
;
1084 fdctrl
->msr
&= ~FD_MSR_NONDMA
;
1085 fdctrl_set_fifo(fdctrl
, 7, 1);
1088 /* Prepare a data transfer (either DMA or FIFO) */
1089 static void fdctrl_start_transfer(FDCtrl
*fdctrl
, int direction
)
1095 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1096 cur_drv
= get_cur_drv(fdctrl
);
1097 kt
= fdctrl
->fifo
[2];
1098 kh
= fdctrl
->fifo
[3];
1099 ks
= fdctrl
->fifo
[4];
1100 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1101 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1102 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
));
1103 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1106 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1107 fdctrl
->fifo
[3] = kt
;
1108 fdctrl
->fifo
[4] = kh
;
1109 fdctrl
->fifo
[5] = ks
;
1113 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1114 fdctrl
->fifo
[3] = kt
;
1115 fdctrl
->fifo
[4] = kh
;
1116 fdctrl
->fifo
[5] = ks
;
1119 /* No seek enabled */
1120 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1121 fdctrl
->fifo
[3] = kt
;
1122 fdctrl
->fifo
[4] = kh
;
1123 fdctrl
->fifo
[5] = ks
;
1132 /* Set the FIFO state */
1133 fdctrl
->data_dir
= direction
;
1134 fdctrl
->data_pos
= 0;
1135 fdctrl
->msr
|= FD_MSR_CMDBUSY
;
1136 if (fdctrl
->fifo
[0] & 0x80)
1137 fdctrl
->data_state
|= FD_STATE_MULTI
;
1139 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1141 fdctrl
->data_state
|= FD_STATE_SEEK
;
1143 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1144 if (fdctrl
->fifo
[5] == 00) {
1145 fdctrl
->data_len
= fdctrl
->fifo
[8];
1148 fdctrl
->data_len
= 128 << (fdctrl
->fifo
[5] > 7 ? 7 : fdctrl
->fifo
[5]);
1149 tmp
= (fdctrl
->fifo
[6] - ks
+ 1);
1150 if (fdctrl
->fifo
[0] & 0x80)
1151 tmp
+= fdctrl
->fifo
[6];
1152 fdctrl
->data_len
*= tmp
;
1154 fdctrl
->eot
= fdctrl
->fifo
[6];
1155 if (fdctrl
->dor
& FD_DOR_DMAEN
) {
1157 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1158 dma_mode
= DMA_get_channel_mode(fdctrl
->dma_chann
);
1159 dma_mode
= (dma_mode
>> 2) & 3;
1160 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1161 dma_mode
, direction
,
1162 (128 << fdctrl
->fifo
[5]) *
1163 (cur_drv
->last_sect
- ks
+ 1), fdctrl
->data_len
);
1164 if (((direction
== FD_DIR_SCANE
|| direction
== FD_DIR_SCANL
||
1165 direction
== FD_DIR_SCANH
) && dma_mode
== 0) ||
1166 (direction
== FD_DIR_WRITE
&& dma_mode
== 2) ||
1167 (direction
== FD_DIR_READ
&& dma_mode
== 1)) {
1168 /* No access is allowed until DMA transfer has completed */
1169 fdctrl
->msr
&= ~FD_MSR_RQM
;
1170 /* Now, we just have to wait for the DMA controller to
1173 DMA_hold_DREQ(fdctrl
->dma_chann
);
1174 DMA_schedule(fdctrl
->dma_chann
);
1177 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode
, direction
);
1180 FLOPPY_DPRINTF("start non-DMA transfer\n");
1181 fdctrl
->msr
|= FD_MSR_NONDMA
;
1182 if (direction
!= FD_DIR_WRITE
)
1183 fdctrl
->msr
|= FD_MSR_DIO
;
1184 /* IO based transfer: calculate len */
1185 fdctrl_raise_irq(fdctrl
, 0x00);
1190 /* Prepare a transfer of deleted data */
1191 static void fdctrl_start_transfer_del(FDCtrl
*fdctrl
, int direction
)
1193 FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1195 /* We don't handle deleted data,
1196 * so we don't return *ANYTHING*
1198 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1201 /* handlers for DMA transfers */
1202 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
1203 int dma_pos
, int dma_len
)
1207 int len
, start_pos
, rel_pos
;
1208 uint8_t status0
= 0x00, status1
= 0x00, status2
= 0x00;
1211 if (fdctrl
->msr
& FD_MSR_RQM
) {
1212 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1215 cur_drv
= get_cur_drv(fdctrl
);
1216 if (fdctrl
->data_dir
== FD_DIR_SCANE
|| fdctrl
->data_dir
== FD_DIR_SCANL
||
1217 fdctrl
->data_dir
== FD_DIR_SCANH
)
1218 status2
= FD_SR2_SNS
;
1219 if (dma_len
> fdctrl
->data_len
)
1220 dma_len
= fdctrl
->data_len
;
1221 if (cur_drv
->bs
== NULL
) {
1222 if (fdctrl
->data_dir
== FD_DIR_WRITE
)
1223 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1225 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1227 goto transfer_error
;
1229 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1230 for (start_pos
= fdctrl
->data_pos
; fdctrl
->data_pos
< dma_len
;) {
1231 len
= dma_len
- fdctrl
->data_pos
;
1232 if (len
+ rel_pos
> FD_SECTOR_LEN
)
1233 len
= FD_SECTOR_LEN
- rel_pos
;
1234 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1235 "(%d-0x%08x 0x%08x)\n", len
, dma_len
, fdctrl
->data_pos
,
1236 fdctrl
->data_len
, GET_CUR_DRV(fdctrl
), cur_drv
->head
,
1237 cur_drv
->track
, cur_drv
->sect
, fd_sector(cur_drv
),
1238 fd_sector(cur_drv
) * FD_SECTOR_LEN
);
1239 if (fdctrl
->data_dir
!= FD_DIR_WRITE
||
1240 len
< FD_SECTOR_LEN
|| rel_pos
!= 0) {
1241 /* READ & SCAN commands and realign to a sector for WRITE */
1242 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
),
1243 fdctrl
->fifo
, 1) < 0) {
1244 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1245 fd_sector(cur_drv
));
1246 /* Sure, image size is too small... */
1247 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1250 switch (fdctrl
->data_dir
) {
1253 DMA_write_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1254 fdctrl
->data_pos
, len
);
1257 /* WRITE commands */
1258 DMA_read_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1259 fdctrl
->data_pos
, len
);
1260 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
),
1261 fdctrl
->fifo
, 1) < 0) {
1262 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv
));
1263 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1264 goto transfer_error
;
1270 uint8_t tmpbuf
[FD_SECTOR_LEN
];
1272 DMA_read_memory (nchan
, tmpbuf
, fdctrl
->data_pos
, len
);
1273 ret
= memcmp(tmpbuf
, fdctrl
->fifo
+ rel_pos
, len
);
1275 status2
= FD_SR2_SEH
;
1278 if ((ret
< 0 && fdctrl
->data_dir
== FD_DIR_SCANL
) ||
1279 (ret
> 0 && fdctrl
->data_dir
== FD_DIR_SCANH
)) {
1286 fdctrl
->data_pos
+= len
;
1287 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1289 /* Seek to next sector */
1290 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
))
1295 len
= fdctrl
->data_pos
- start_pos
;
1296 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1297 fdctrl
->data_pos
, len
, fdctrl
->data_len
);
1298 if (fdctrl
->data_dir
== FD_DIR_SCANE
||
1299 fdctrl
->data_dir
== FD_DIR_SCANL
||
1300 fdctrl
->data_dir
== FD_DIR_SCANH
)
1301 status2
= FD_SR2_SEH
;
1302 if (FD_DID_SEEK(fdctrl
->data_state
))
1303 status0
|= FD_SR0_SEEK
;
1304 fdctrl
->data_len
-= len
;
1305 fdctrl_stop_transfer(fdctrl
, status0
, status1
, status2
);
1311 /* Data register : 0x05 */
1312 static uint32_t fdctrl_read_data(FDCtrl
*fdctrl
)
1315 uint32_t retval
= 0;
1318 cur_drv
= get_cur_drv(fdctrl
);
1319 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1320 if (!(fdctrl
->msr
& FD_MSR_RQM
) || !(fdctrl
->msr
& FD_MSR_DIO
)) {
1321 FLOPPY_ERROR("controller not ready for reading\n");
1324 pos
= fdctrl
->data_pos
;
1325 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1326 pos
%= FD_SECTOR_LEN
;
1328 if (fdctrl
->data_pos
!= 0)
1329 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1330 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1331 fd_sector(cur_drv
));
1334 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1335 FLOPPY_DPRINTF("error getting sector %d\n",
1336 fd_sector(cur_drv
));
1337 /* Sure, image size is too small... */
1338 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1342 retval
= fdctrl
->fifo
[pos
];
1343 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1344 fdctrl
->data_pos
= 0;
1345 /* Switch from transfer mode to status mode
1346 * then from status mode to command mode
1348 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1349 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1351 fdctrl_reset_fifo(fdctrl
);
1352 fdctrl_reset_irq(fdctrl
);
1355 FLOPPY_DPRINTF("data register: 0x%02x\n", retval
);
1360 static void fdctrl_format_sector(FDCtrl
*fdctrl
)
1365 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1366 cur_drv
= get_cur_drv(fdctrl
);
1367 kt
= fdctrl
->fifo
[6];
1368 kh
= fdctrl
->fifo
[7];
1369 ks
= fdctrl
->fifo
[8];
1370 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1371 GET_CUR_DRV(fdctrl
), kh
, kt
, ks
,
1372 fd_sector_calc(kh
, kt
, ks
, cur_drv
->last_sect
));
1373 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1376 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1377 fdctrl
->fifo
[3] = kt
;
1378 fdctrl
->fifo
[4] = kh
;
1379 fdctrl
->fifo
[5] = ks
;
1383 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, FD_SR1_EC
, 0x00);
1384 fdctrl
->fifo
[3] = kt
;
1385 fdctrl
->fifo
[4] = kh
;
1386 fdctrl
->fifo
[5] = ks
;
1389 /* No seek enabled */
1390 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1391 fdctrl
->fifo
[3] = kt
;
1392 fdctrl
->fifo
[4] = kh
;
1393 fdctrl
->fifo
[5] = ks
;
1396 fdctrl
->data_state
|= FD_STATE_SEEK
;
1401 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1402 if (cur_drv
->bs
== NULL
||
1403 bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1404 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv
));
1405 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1407 if (cur_drv
->sect
== cur_drv
->last_sect
) {
1408 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1409 /* Last sector done */
1410 if (FD_DID_SEEK(fdctrl
->data_state
))
1411 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1413 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1416 fdctrl
->data_pos
= 0;
1417 fdctrl
->data_len
= 4;
1422 static void fdctrl_handle_lock(FDCtrl
*fdctrl
, int direction
)
1424 fdctrl
->lock
= (fdctrl
->fifo
[0] & 0x80) ? 1 : 0;
1425 fdctrl
->fifo
[0] = fdctrl
->lock
<< 4;
1426 fdctrl_set_fifo(fdctrl
, 1, fdctrl
->lock
);
1429 static void fdctrl_handle_dumpreg(FDCtrl
*fdctrl
, int direction
)
1431 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1433 /* Drives position */
1434 fdctrl
->fifo
[0] = drv0(fdctrl
)->track
;
1435 fdctrl
->fifo
[1] = drv1(fdctrl
)->track
;
1437 fdctrl
->fifo
[2] = drv2(fdctrl
)->track
;
1438 fdctrl
->fifo
[3] = drv3(fdctrl
)->track
;
1440 fdctrl
->fifo
[2] = 0;
1441 fdctrl
->fifo
[3] = 0;
1444 fdctrl
->fifo
[4] = fdctrl
->timer0
;
1445 fdctrl
->fifo
[5] = (fdctrl
->timer1
<< 1) | (fdctrl
->dor
& FD_DOR_DMAEN
? 1 : 0);
1446 fdctrl
->fifo
[6] = cur_drv
->last_sect
;
1447 fdctrl
->fifo
[7] = (fdctrl
->lock
<< 7) |
1448 (cur_drv
->perpendicular
<< 2);
1449 fdctrl
->fifo
[8] = fdctrl
->config
;
1450 fdctrl
->fifo
[9] = fdctrl
->precomp_trk
;
1451 fdctrl_set_fifo(fdctrl
, 10, 0);
1454 static void fdctrl_handle_version(FDCtrl
*fdctrl
, int direction
)
1456 /* Controller's version */
1457 fdctrl
->fifo
[0] = fdctrl
->version
;
1458 fdctrl_set_fifo(fdctrl
, 1, 1);
1461 static void fdctrl_handle_partid(FDCtrl
*fdctrl
, int direction
)
1463 fdctrl
->fifo
[0] = 0x41; /* Stepping 1 */
1464 fdctrl_set_fifo(fdctrl
, 1, 0);
1467 static void fdctrl_handle_restore(FDCtrl
*fdctrl
, int direction
)
1469 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1471 /* Drives position */
1472 drv0(fdctrl
)->track
= fdctrl
->fifo
[3];
1473 drv1(fdctrl
)->track
= fdctrl
->fifo
[4];
1475 drv2(fdctrl
)->track
= fdctrl
->fifo
[5];
1476 drv3(fdctrl
)->track
= fdctrl
->fifo
[6];
1479 fdctrl
->timer0
= fdctrl
->fifo
[7];
1480 fdctrl
->timer1
= fdctrl
->fifo
[8];
1481 cur_drv
->last_sect
= fdctrl
->fifo
[9];
1482 fdctrl
->lock
= fdctrl
->fifo
[10] >> 7;
1483 cur_drv
->perpendicular
= (fdctrl
->fifo
[10] >> 2) & 0xF;
1484 fdctrl
->config
= fdctrl
->fifo
[11];
1485 fdctrl
->precomp_trk
= fdctrl
->fifo
[12];
1486 fdctrl
->pwrd
= fdctrl
->fifo
[13];
1487 fdctrl_reset_fifo(fdctrl
);
1490 static void fdctrl_handle_save(FDCtrl
*fdctrl
, int direction
)
1492 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1494 fdctrl
->fifo
[0] = 0;
1495 fdctrl
->fifo
[1] = 0;
1496 /* Drives position */
1497 fdctrl
->fifo
[2] = drv0(fdctrl
)->track
;
1498 fdctrl
->fifo
[3] = drv1(fdctrl
)->track
;
1500 fdctrl
->fifo
[4] = drv2(fdctrl
)->track
;
1501 fdctrl
->fifo
[5] = drv3(fdctrl
)->track
;
1503 fdctrl
->fifo
[4] = 0;
1504 fdctrl
->fifo
[5] = 0;
1507 fdctrl
->fifo
[6] = fdctrl
->timer0
;
1508 fdctrl
->fifo
[7] = fdctrl
->timer1
;
1509 fdctrl
->fifo
[8] = cur_drv
->last_sect
;
1510 fdctrl
->fifo
[9] = (fdctrl
->lock
<< 7) |
1511 (cur_drv
->perpendicular
<< 2);
1512 fdctrl
->fifo
[10] = fdctrl
->config
;
1513 fdctrl
->fifo
[11] = fdctrl
->precomp_trk
;
1514 fdctrl
->fifo
[12] = fdctrl
->pwrd
;
1515 fdctrl
->fifo
[13] = 0;
1516 fdctrl
->fifo
[14] = 0;
1517 fdctrl_set_fifo(fdctrl
, 15, 1);
1520 static void fdctrl_handle_readid(FDCtrl
*fdctrl
, int direction
)
1522 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1524 /* XXX: should set main status register to busy */
1525 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1526 qemu_mod_timer(fdctrl
->result_timer
,
1527 qemu_get_clock(vm_clock
) + (get_ticks_per_sec() / 50));
1530 static void fdctrl_handle_format_track(FDCtrl
*fdctrl
, int direction
)
1534 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1535 cur_drv
= get_cur_drv(fdctrl
);
1536 fdctrl
->data_state
|= FD_STATE_FORMAT
;
1537 if (fdctrl
->fifo
[0] & 0x80)
1538 fdctrl
->data_state
|= FD_STATE_MULTI
;
1540 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1541 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1543 fdctrl
->fifo
[2] > 7 ? 16384 : 128 << fdctrl
->fifo
[2];
1545 cur_drv
->last_sect
=
1546 cur_drv
->flags
& FDISK_DBL_SIDES
? fdctrl
->fifo
[3] :
1547 fdctrl
->fifo
[3] / 2;
1549 cur_drv
->last_sect
= fdctrl
->fifo
[3];
1551 /* TODO: implement format using DMA expected by the Bochs BIOS
1552 * and Linux fdformat (read 3 bytes per sector via DMA and fill
1553 * the sector with the specified fill byte
1555 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1556 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1559 static void fdctrl_handle_specify(FDCtrl
*fdctrl
, int direction
)
1561 fdctrl
->timer0
= (fdctrl
->fifo
[1] >> 4) & 0xF;
1562 fdctrl
->timer1
= fdctrl
->fifo
[2] >> 1;
1563 if (fdctrl
->fifo
[2] & 1)
1564 fdctrl
->dor
&= ~FD_DOR_DMAEN
;
1566 fdctrl
->dor
|= FD_DOR_DMAEN
;
1567 /* No result back */
1568 fdctrl_reset_fifo(fdctrl
);
1571 static void fdctrl_handle_sense_drive_status(FDCtrl
*fdctrl
, int direction
)
1575 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1576 cur_drv
= get_cur_drv(fdctrl
);
1577 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1578 /* 1 Byte status back */
1579 fdctrl
->fifo
[0] = (cur_drv
->ro
<< 6) |
1580 (cur_drv
->track
== 0 ? 0x10 : 0x00) |
1581 (cur_drv
->head
<< 2) |
1582 GET_CUR_DRV(fdctrl
) |
1584 fdctrl_set_fifo(fdctrl
, 1, 0);
1587 static void fdctrl_handle_recalibrate(FDCtrl
*fdctrl
, int direction
)
1591 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1592 cur_drv
= get_cur_drv(fdctrl
);
1593 fd_recalibrate(cur_drv
);
1594 fdctrl_reset_fifo(fdctrl
);
1595 /* Raise Interrupt */
1596 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1599 static void fdctrl_handle_sense_interrupt_status(FDCtrl
*fdctrl
, int direction
)
1601 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1603 if(fdctrl
->reset_sensei
> 0) {
1605 FD_SR0_RDYCHG
+ FD_RESET_SENSEI_COUNT
- fdctrl
->reset_sensei
;
1606 fdctrl
->reset_sensei
--;
1608 /* XXX: status0 handling is broken for read/write
1609 commands, so we do this hack. It should be suppressed
1612 FD_SR0_SEEK
| (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1615 fdctrl
->fifo
[1] = cur_drv
->track
;
1616 fdctrl_set_fifo(fdctrl
, 2, 0);
1617 fdctrl_reset_irq(fdctrl
);
1618 fdctrl
->status0
= FD_SR0_RDYCHG
;
1621 static void fdctrl_handle_seek(FDCtrl
*fdctrl
, int direction
)
1625 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1626 cur_drv
= get_cur_drv(fdctrl
);
1627 fdctrl_reset_fifo(fdctrl
);
1628 if (fdctrl
->fifo
[2] > cur_drv
->max_track
) {
1629 fdctrl_raise_irq(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
);
1631 cur_drv
->track
= fdctrl
->fifo
[2];
1632 /* Raise Interrupt */
1633 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1637 static void fdctrl_handle_perpendicular_mode(FDCtrl
*fdctrl
, int direction
)
1639 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1641 if (fdctrl
->fifo
[1] & 0x80)
1642 cur_drv
->perpendicular
= fdctrl
->fifo
[1] & 0x7;
1643 /* No result back */
1644 fdctrl_reset_fifo(fdctrl
);
1647 static void fdctrl_handle_configure(FDCtrl
*fdctrl
, int direction
)
1649 fdctrl
->config
= fdctrl
->fifo
[2];
1650 fdctrl
->precomp_trk
= fdctrl
->fifo
[3];
1651 /* No result back */
1652 fdctrl_reset_fifo(fdctrl
);
1655 static void fdctrl_handle_powerdown_mode(FDCtrl
*fdctrl
, int direction
)
1657 fdctrl
->pwrd
= fdctrl
->fifo
[1];
1658 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1659 fdctrl_set_fifo(fdctrl
, 1, 1);
1662 static void fdctrl_handle_option(FDCtrl
*fdctrl
, int direction
)
1664 /* No result back */
1665 fdctrl_reset_fifo(fdctrl
);
1668 static void fdctrl_handle_drive_specification_command(FDCtrl
*fdctrl
, int direction
)
1670 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1672 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x80) {
1673 /* Command parameters done */
1674 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x40) {
1675 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1676 fdctrl
->fifo
[2] = 0;
1677 fdctrl
->fifo
[3] = 0;
1678 fdctrl_set_fifo(fdctrl
, 4, 1);
1680 fdctrl_reset_fifo(fdctrl
);
1682 } else if (fdctrl
->data_len
> 7) {
1684 fdctrl
->fifo
[0] = 0x80 |
1685 (cur_drv
->head
<< 2) | GET_CUR_DRV(fdctrl
);
1686 fdctrl_set_fifo(fdctrl
, 1, 1);
1690 static void fdctrl_handle_relative_seek_out(FDCtrl
*fdctrl
, int direction
)
1694 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1695 cur_drv
= get_cur_drv(fdctrl
);
1696 if (fdctrl
->fifo
[2] + cur_drv
->track
>= cur_drv
->max_track
) {
1697 cur_drv
->track
= cur_drv
->max_track
- 1;
1699 cur_drv
->track
+= fdctrl
->fifo
[2];
1701 fdctrl_reset_fifo(fdctrl
);
1702 /* Raise Interrupt */
1703 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1706 static void fdctrl_handle_relative_seek_in(FDCtrl
*fdctrl
, int direction
)
1710 SET_CUR_DRV(fdctrl
, fdctrl
->fifo
[1] & FD_DOR_SELMASK
);
1711 cur_drv
= get_cur_drv(fdctrl
);
1712 if (fdctrl
->fifo
[2] > cur_drv
->track
) {
1715 cur_drv
->track
-= fdctrl
->fifo
[2];
1717 fdctrl_reset_fifo(fdctrl
);
1718 /* Raise Interrupt */
1719 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1722 static const struct {
1727 void (*handler
)(FDCtrl
*fdctrl
, int direction
);
1730 { FD_CMD_READ
, 0x1f, "READ", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1731 { FD_CMD_WRITE
, 0x3f, "WRITE", 8, fdctrl_start_transfer
, FD_DIR_WRITE
},
1732 { FD_CMD_SEEK
, 0xff, "SEEK", 2, fdctrl_handle_seek
},
1733 { FD_CMD_SENSE_INTERRUPT_STATUS
, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status
},
1734 { FD_CMD_RECALIBRATE
, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate
},
1735 { FD_CMD_FORMAT_TRACK
, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track
},
1736 { FD_CMD_READ_TRACK
, 0xbf, "READ TRACK", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1737 { FD_CMD_RESTORE
, 0xff, "RESTORE", 17, fdctrl_handle_restore
}, /* part of READ DELETED DATA */
1738 { FD_CMD_SAVE
, 0xff, "SAVE", 0, fdctrl_handle_save
}, /* part of READ DELETED DATA */
1739 { FD_CMD_READ_DELETED
, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_READ
},
1740 { FD_CMD_SCAN_EQUAL
, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANE
},
1741 { FD_CMD_VERIFY
, 0x1f, "VERIFY", 8, fdctrl_unimplemented
},
1742 { FD_CMD_SCAN_LOW_OR_EQUAL
, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANL
},
1743 { FD_CMD_SCAN_HIGH_OR_EQUAL
, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANH
},
1744 { FD_CMD_WRITE_DELETED
, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_WRITE
},
1745 { FD_CMD_READ_ID
, 0xbf, "READ ID", 1, fdctrl_handle_readid
},
1746 { FD_CMD_SPECIFY
, 0xff, "SPECIFY", 2, fdctrl_handle_specify
},
1747 { FD_CMD_SENSE_DRIVE_STATUS
, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status
},
1748 { FD_CMD_PERPENDICULAR_MODE
, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode
},
1749 { FD_CMD_CONFIGURE
, 0xff, "CONFIGURE", 3, fdctrl_handle_configure
},
1750 { FD_CMD_POWERDOWN_MODE
, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode
},
1751 { FD_CMD_OPTION
, 0xff, "OPTION", 1, fdctrl_handle_option
},
1752 { FD_CMD_DRIVE_SPECIFICATION_COMMAND
, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command
},
1753 { FD_CMD_RELATIVE_SEEK_OUT
, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out
},
1754 { FD_CMD_FORMAT_AND_WRITE
, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented
},
1755 { FD_CMD_RELATIVE_SEEK_IN
, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in
},
1756 { FD_CMD_LOCK
, 0x7f, "LOCK", 0, fdctrl_handle_lock
},
1757 { FD_CMD_DUMPREG
, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg
},
1758 { FD_CMD_VERSION
, 0xff, "VERSION", 0, fdctrl_handle_version
},
1759 { FD_CMD_PART_ID
, 0xff, "PART ID", 0, fdctrl_handle_partid
},
1760 { FD_CMD_WRITE
, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer
, FD_DIR_WRITE
}, /* not in specification ; BeOS 4.5 bug */
1761 { 0, 0, "unknown", 0, fdctrl_unimplemented
}, /* default handler */
1763 /* Associate command to an index in the 'handlers' array */
1764 static uint8_t command_to_handler
[256];
1766 static void fdctrl_write_data(FDCtrl
*fdctrl
, uint32_t value
)
1772 if (!(fdctrl
->dor
& FD_DOR_nRESET
)) {
1773 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1776 if (!(fdctrl
->msr
& FD_MSR_RQM
) || (fdctrl
->msr
& FD_MSR_DIO
)) {
1777 FLOPPY_ERROR("controller not ready for writing\n");
1780 fdctrl
->dsr
&= ~FD_DSR_PWRDOWN
;
1781 /* Is it write command time ? */
1782 if (fdctrl
->msr
& FD_MSR_NONDMA
) {
1783 /* FIFO data write */
1784 pos
= fdctrl
->data_pos
++;
1785 pos
%= FD_SECTOR_LEN
;
1786 fdctrl
->fifo
[pos
] = value
;
1787 if (pos
== FD_SECTOR_LEN
- 1 ||
1788 fdctrl
->data_pos
== fdctrl
->data_len
) {
1789 cur_drv
= get_cur_drv(fdctrl
);
1790 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1791 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv
));
1794 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1795 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1796 fd_sector(cur_drv
));
1800 /* Switch from transfer mode to status mode
1801 * then from status mode to command mode
1803 if (fdctrl
->data_pos
== fdctrl
->data_len
)
1804 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1807 if (fdctrl
->data_pos
== 0) {
1809 pos
= command_to_handler
[value
& 0xff];
1810 FLOPPY_DPRINTF("%s command\n", handlers
[pos
].name
);
1811 fdctrl
->data_len
= handlers
[pos
].parameters
+ 1;
1814 FLOPPY_DPRINTF("%s: %02x\n", __func__
, value
);
1815 fdctrl
->fifo
[fdctrl
->data_pos
++] = value
;
1816 if (fdctrl
->data_pos
== fdctrl
->data_len
) {
1817 /* We now have all parameters
1818 * and will be able to treat the command
1820 if (fdctrl
->data_state
& FD_STATE_FORMAT
) {
1821 fdctrl_format_sector(fdctrl
);
1825 pos
= command_to_handler
[fdctrl
->fifo
[0] & 0xff];
1826 FLOPPY_DPRINTF("treat %s command\n", handlers
[pos
].name
);
1827 (*handlers
[pos
].handler
)(fdctrl
, handlers
[pos
].direction
);
1831 static void fdctrl_result_timer(void *opaque
)
1833 FDCtrl
*fdctrl
= opaque
;
1834 FDrive
*cur_drv
= get_cur_drv(fdctrl
);
1836 /* Pretend we are spinning.
1837 * This is needed for Coherent, which uses READ ID to check for
1838 * sector interleaving.
1840 if (cur_drv
->last_sect
!= 0) {
1841 cur_drv
->sect
= (cur_drv
->sect
% cur_drv
->last_sect
) + 1;
1843 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1846 /* Init functions */
1847 static void fdctrl_connect_drives(FDCtrl
*fdctrl
)
1851 for (i
= 0; i
< MAX_FD
; i
++) {
1852 fd_init(&fdctrl
->drives
[i
]);
1853 fd_revalidate(&fdctrl
->drives
[i
]);
1857 FDCtrl
*fdctrl_init_isa(DriveInfo
**fds
)
1861 dev
= isa_create("isa-fdc");
1863 qdev_prop_set_drive(&dev
->qdev
, "driveA", fds
[0]->bdrv
);
1866 qdev_prop_set_drive(&dev
->qdev
, "driveB", fds
[1]->bdrv
);
1868 if (qdev_init(&dev
->qdev
) < 0)
1870 return &(DO_UPCAST(FDCtrlISABus
, busdev
, dev
)->state
);
1873 FDCtrl
*fdctrl_init_sysbus(qemu_irq irq
, int dma_chann
,
1874 target_phys_addr_t mmio_base
, DriveInfo
**fds
)
1880 dev
= qdev_create(NULL
, "sysbus-fdc");
1881 sys
= DO_UPCAST(FDCtrlSysBus
, busdev
.qdev
, dev
);
1882 fdctrl
= &sys
->state
;
1883 fdctrl
->dma_chann
= dma_chann
; /* FIXME */
1885 qdev_prop_set_drive(dev
, "driveA", fds
[0]->bdrv
);
1888 qdev_prop_set_drive(dev
, "driveB", fds
[1]->bdrv
);
1890 qdev_init_nofail(dev
);
1891 sysbus_connect_irq(&sys
->busdev
, 0, irq
);
1892 sysbus_mmio_map(&sys
->busdev
, 0, mmio_base
);
1897 FDCtrl
*sun4m_fdctrl_init(qemu_irq irq
, target_phys_addr_t io_base
,
1898 DriveInfo
**fds
, qemu_irq
*fdc_tc
)
1904 dev
= qdev_create(NULL
, "SUNW,fdtwo");
1906 qdev_prop_set_drive(dev
, "drive", fds
[0]->bdrv
);
1908 qdev_init_nofail(dev
);
1909 sys
= DO_UPCAST(FDCtrlSysBus
, busdev
.qdev
, dev
);
1910 fdctrl
= &sys
->state
;
1911 sysbus_connect_irq(&sys
->busdev
, 0, irq
);
1912 sysbus_mmio_map(&sys
->busdev
, 0, io_base
);
1913 *fdc_tc
= qdev_get_gpio_in(dev
, 0);
1918 static int fdctrl_init_common(FDCtrl
*fdctrl
)
1921 static int command_tables_inited
= 0;
1923 /* Fill 'command_to_handler' lookup table */
1924 if (!command_tables_inited
) {
1925 command_tables_inited
= 1;
1926 for (i
= ARRAY_SIZE(handlers
) - 1; i
>= 0; i
--) {
1927 for (j
= 0; j
< sizeof(command_to_handler
); j
++) {
1928 if ((j
& handlers
[i
].mask
) == handlers
[i
].value
) {
1929 command_to_handler
[j
] = i
;
1935 FLOPPY_DPRINTF("init controller\n");
1936 fdctrl
->fifo
= qemu_memalign(512, FD_SECTOR_LEN
);
1937 fdctrl
->fifo_size
= 512;
1938 fdctrl
->result_timer
= qemu_new_timer(vm_clock
,
1939 fdctrl_result_timer
, fdctrl
);
1941 fdctrl
->version
= 0x90; /* Intel 82078 controller */
1942 fdctrl
->config
= FD_CONFIG_EIS
| FD_CONFIG_EFIFO
; /* Implicit seek, polling & FIFO enabled */
1943 fdctrl
->num_floppies
= MAX_FD
;
1945 if (fdctrl
->dma_chann
!= -1)
1946 DMA_register_channel(fdctrl
->dma_chann
, &fdctrl_transfer_handler
, fdctrl
);
1947 fdctrl_connect_drives(fdctrl
);
1952 static int isabus_fdc_init1(ISADevice
*dev
)
1954 FDCtrlISABus
*isa
= DO_UPCAST(FDCtrlISABus
, busdev
, dev
);
1955 FDCtrl
*fdctrl
= &isa
->state
;
1961 register_ioport_read(iobase
+ 0x01, 5, 1,
1962 &fdctrl_read_port
, fdctrl
);
1963 register_ioport_read(iobase
+ 0x07, 1, 1,
1964 &fdctrl_read_port
, fdctrl
);
1965 register_ioport_write(iobase
+ 0x01, 5, 1,
1966 &fdctrl_write_port
, fdctrl
);
1967 register_ioport_write(iobase
+ 0x07, 1, 1,
1968 &fdctrl_write_port
, fdctrl
);
1969 isa_init_irq(&isa
->busdev
, &fdctrl
->irq
, isairq
);
1970 fdctrl
->dma_chann
= dma_chann
;
1972 qdev_set_legacy_instance_id(&dev
->qdev
, iobase
, 2);
1973 ret
= fdctrl_init_common(fdctrl
);
1978 static int sysbus_fdc_init1(SysBusDevice
*dev
)
1980 FDCtrlSysBus
*sys
= DO_UPCAST(FDCtrlSysBus
, busdev
, dev
);
1981 FDCtrl
*fdctrl
= &sys
->state
;
1985 io
= cpu_register_io_memory(fdctrl_mem_read
, fdctrl_mem_write
, fdctrl
);
1986 sysbus_init_mmio(dev
, 0x08, io
);
1987 sysbus_init_irq(dev
, &fdctrl
->irq
);
1988 qdev_init_gpio_in(&dev
->qdev
, fdctrl_handle_tc
, 1);
1989 fdctrl
->dma_chann
= -1;
1991 qdev_set_legacy_instance_id(&dev
->qdev
, io
, 2);
1992 ret
= fdctrl_init_common(fdctrl
);
1997 static int sun4m_fdc_init1(SysBusDevice
*dev
)
1999 FDCtrl
*fdctrl
= &(FROM_SYSBUS(FDCtrlSysBus
, dev
)->state
);
2002 io
= cpu_register_io_memory(fdctrl_mem_read_strict
,
2003 fdctrl_mem_write_strict
, fdctrl
);
2004 sysbus_init_mmio(dev
, 0x08, io
);
2005 sysbus_init_irq(dev
, &fdctrl
->irq
);
2006 qdev_init_gpio_in(&dev
->qdev
, fdctrl_handle_tc
, 1);
2009 qdev_set_legacy_instance_id(&dev
->qdev
, io
, 2);
2010 return fdctrl_init_common(fdctrl
);
2013 static const VMStateDescription vmstate_isa_fdc
={
2016 .minimum_version_id
= 2,
2017 .fields
= (VMStateField
[]) {
2018 VMSTATE_STRUCT(state
, FDCtrlISABus
, 0, vmstate_fdc
, FDCtrl
),
2019 VMSTATE_END_OF_LIST()
2023 static ISADeviceInfo isa_fdc_info
= {
2024 .init
= isabus_fdc_init1
,
2025 .qdev
.name
= "isa-fdc",
2026 .qdev
.size
= sizeof(FDCtrlISABus
),
2028 .qdev
.vmsd
= &vmstate_isa_fdc
,
2029 .qdev
.reset
= fdctrl_external_reset_isa
,
2030 .qdev
.props
= (Property
[]) {
2031 DEFINE_PROP_DRIVE("driveA", FDCtrlISABus
, state
.drives
[0].bs
),
2032 DEFINE_PROP_DRIVE("driveB", FDCtrlISABus
, state
.drives
[1].bs
),
2033 DEFINE_PROP_END_OF_LIST(),
2037 static const VMStateDescription vmstate_sysbus_fdc
={
2040 .minimum_version_id
= 2,
2041 .fields
= (VMStateField
[]) {
2042 VMSTATE_STRUCT(state
, FDCtrlSysBus
, 0, vmstate_fdc
, FDCtrl
),
2043 VMSTATE_END_OF_LIST()
2047 static SysBusDeviceInfo sysbus_fdc_info
= {
2048 .init
= sysbus_fdc_init1
,
2049 .qdev
.name
= "sysbus-fdc",
2050 .qdev
.size
= sizeof(FDCtrlSysBus
),
2051 .qdev
.vmsd
= &vmstate_sysbus_fdc
,
2052 .qdev
.reset
= fdctrl_external_reset_sysbus
,
2053 .qdev
.props
= (Property
[]) {
2054 DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus
, state
.drives
[0].bs
),
2055 DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus
, state
.drives
[1].bs
),
2056 DEFINE_PROP_END_OF_LIST(),
2060 static SysBusDeviceInfo sun4m_fdc_info
= {
2061 .init
= sun4m_fdc_init1
,
2062 .qdev
.name
= "SUNW,fdtwo",
2063 .qdev
.size
= sizeof(FDCtrlSysBus
),
2064 .qdev
.vmsd
= &vmstate_sysbus_fdc
,
2065 .qdev
.reset
= fdctrl_external_reset_sysbus
,
2066 .qdev
.props
= (Property
[]) {
2067 DEFINE_PROP_DRIVE("drive", FDCtrlSysBus
, state
.drives
[0].bs
),
2068 DEFINE_PROP_END_OF_LIST(),
2072 static void fdc_register_devices(void)
2074 isa_qdev_register(&isa_fdc_info
);
2075 sysbus_register_withprop(&sysbus_fdc_info
);
2076 sysbus_register_withprop(&sun4m_fdc_info
);
2079 device_init(fdc_register_devices
)