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 /********************************************************/
36 /* debug Floppy devices */
37 //#define DEBUG_FLOPPY
40 #define FLOPPY_DPRINTF(fmt, args...) \
41 do { printf("FLOPPY: " fmt , ##args); } while (0)
43 #define FLOPPY_DPRINTF(fmt, args...)
46 #define FLOPPY_ERROR(fmt, args...) \
47 do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
49 /********************************************************/
50 /* Floppy drive emulation */
52 /* Will always be a fixed parameter for us */
53 #define FD_SECTOR_LEN 512
54 #define FD_SECTOR_SC 2 /* Sector size code */
56 /* Floppy disk drive emulation */
57 typedef enum fdisk_type_t
{
58 FDRIVE_DISK_288
= 0x01, /* 2.88 MB disk */
59 FDRIVE_DISK_144
= 0x02, /* 1.44 MB disk */
60 FDRIVE_DISK_720
= 0x03, /* 720 kB disk */
61 FDRIVE_DISK_USER
= 0x04, /* User defined geometry */
62 FDRIVE_DISK_NONE
= 0x05, /* No disk */
65 typedef enum fdrive_type_t
{
66 FDRIVE_DRV_144
= 0x00, /* 1.44 MB 3"5 drive */
67 FDRIVE_DRV_288
= 0x01, /* 2.88 MB 3"5 drive */
68 FDRIVE_DRV_120
= 0x02, /* 1.2 MB 5"25 drive */
69 FDRIVE_DRV_NONE
= 0x03, /* No drive connected */
72 typedef enum fdrive_flags_t
{
73 FDRIVE_MOTOR_ON
= 0x01, /* motor on/off */
76 typedef enum fdisk_flags_t
{
77 FDISK_DBL_SIDES
= 0x01,
80 typedef struct fdrive_t
{
84 fdrive_flags_t drflags
;
85 uint8_t perpendicular
; /* 2.88 MB access mode */
90 /* Last operation status */
91 uint8_t dir
; /* Direction */
92 uint8_t rw
; /* Read/write */
95 uint8_t last_sect
; /* Nb sector per track */
96 uint8_t max_track
; /* Nb of tracks */
97 uint16_t bps
; /* Bytes per sector */
98 uint8_t ro
; /* Is read-only */
101 static void fd_init (fdrive_t
*drv
, BlockDriverState
*bs
)
105 drv
->drive
= FDRIVE_DRV_NONE
;
107 drv
->perpendicular
= 0;
113 static int _fd_sector (uint8_t head
, uint8_t track
,
114 uint8_t sect
, uint8_t last_sect
)
116 return (((track
* 2) + head
) * last_sect
) + sect
- 1;
119 /* Returns current position, in sectors, for given drive */
120 static int fd_sector (fdrive_t
*drv
)
122 return _fd_sector(drv
->head
, drv
->track
, drv
->sect
, drv
->last_sect
);
125 static int fd_seek (fdrive_t
*drv
, uint8_t head
, uint8_t track
, uint8_t sect
,
131 if (track
> drv
->max_track
||
132 (head
!= 0 && (drv
->flags
& FDISK_DBL_SIDES
) == 0)) {
133 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
134 head
, track
, sect
, 1,
135 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
136 drv
->max_track
, drv
->last_sect
);
139 if (sect
> drv
->last_sect
) {
140 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
141 head
, track
, sect
, 1,
142 (drv
->flags
& FDISK_DBL_SIDES
) == 0 ? 0 : 1,
143 drv
->max_track
, drv
->last_sect
);
146 sector
= _fd_sector(head
, track
, sect
, drv
->last_sect
);
148 if (sector
!= fd_sector(drv
)) {
151 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
152 head
, track
, sect
, 1, drv
->max_track
, drv
->last_sect
);
157 if (drv
->track
!= track
)
166 /* Set drive back to track 0 */
167 static void fd_recalibrate (fdrive_t
*drv
)
169 FLOPPY_DPRINTF("recalibrate\n");
177 /* Recognize floppy formats */
178 typedef struct fd_format_t
{
187 static const fd_format_t fd_formats
[] = {
188 /* First entry is default format */
189 /* 1.44 MB 3"1/2 floppy disks */
190 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 18, 80, 1, "1.44 MB 3\"1/2", },
191 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 20, 80, 1, "1.6 MB 3\"1/2", },
192 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 21, 80, 1, "1.68 MB 3\"1/2", },
193 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 21, 82, 1, "1.72 MB 3\"1/2", },
194 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 21, 83, 1, "1.74 MB 3\"1/2", },
195 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 22, 80, 1, "1.76 MB 3\"1/2", },
196 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 23, 80, 1, "1.84 MB 3\"1/2", },
197 { FDRIVE_DRV_144
, FDRIVE_DISK_144
, 24, 80, 1, "1.92 MB 3\"1/2", },
198 /* 2.88 MB 3"1/2 floppy disks */
199 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 36, 80, 1, "2.88 MB 3\"1/2", },
200 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 39, 80, 1, "3.12 MB 3\"1/2", },
201 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 40, 80, 1, "3.2 MB 3\"1/2", },
202 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 44, 80, 1, "3.52 MB 3\"1/2", },
203 { FDRIVE_DRV_288
, FDRIVE_DISK_288
, 48, 80, 1, "3.84 MB 3\"1/2", },
204 /* 720 kB 3"1/2 floppy disks */
205 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 9, 80, 1, "720 kB 3\"1/2", },
206 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 10, 80, 1, "800 kB 3\"1/2", },
207 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 10, 82, 1, "820 kB 3\"1/2", },
208 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 10, 83, 1, "830 kB 3\"1/2", },
209 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 13, 80, 1, "1.04 MB 3\"1/2", },
210 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 14, 80, 1, "1.12 MB 3\"1/2", },
211 /* 1.2 MB 5"1/4 floppy disks */
212 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 15, 80, 1, "1.2 kB 5\"1/4", },
213 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 18, 80, 1, "1.44 MB 5\"1/4", },
214 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 18, 82, 1, "1.48 MB 5\"1/4", },
215 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 18, 83, 1, "1.49 MB 5\"1/4", },
216 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 20, 80, 1, "1.6 MB 5\"1/4", },
217 /* 720 kB 5"1/4 floppy disks */
218 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 9, 80, 1, "720 kB 5\"1/4", },
219 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 11, 80, 1, "880 kB 5\"1/4", },
220 /* 360 kB 5"1/4 floppy disks */
221 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 9, 40, 1, "360 kB 5\"1/4", },
222 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 9, 40, 0, "180 kB 5\"1/4", },
223 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 10, 41, 1, "410 kB 5\"1/4", },
224 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 10, 42, 1, "420 kB 5\"1/4", },
225 /* 320 kB 5"1/4 floppy disks */
226 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 8, 40, 1, "320 kB 5\"1/4", },
227 { FDRIVE_DRV_120
, FDRIVE_DISK_288
, 8, 40, 0, "160 kB 5\"1/4", },
228 /* 360 kB must match 5"1/4 better than 3"1/2... */
229 { FDRIVE_DRV_144
, FDRIVE_DISK_720
, 9, 80, 0, "360 kB 3\"1/2", },
231 { FDRIVE_DRV_NONE
, FDRIVE_DISK_NONE
, -1, -1, 0, NULL
, },
234 /* Revalidate a disk drive after a disk change */
235 static void fd_revalidate (fdrive_t
*drv
)
237 const fd_format_t
*parse
;
238 uint64_t nb_sectors
, size
;
239 int i
, first_match
, match
;
240 int nb_heads
, max_track
, last_sect
, ro
;
242 FLOPPY_DPRINTF("revalidate\n");
243 if (drv
->bs
!= NULL
&& bdrv_is_inserted(drv
->bs
)) {
244 ro
= bdrv_is_read_only(drv
->bs
);
245 bdrv_get_geometry_hint(drv
->bs
, &nb_heads
, &max_track
, &last_sect
);
246 if (nb_heads
!= 0 && max_track
!= 0 && last_sect
!= 0) {
247 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
248 nb_heads
- 1, max_track
, last_sect
);
250 bdrv_get_geometry(drv
->bs
, &nb_sectors
);
254 parse
= &fd_formats
[i
];
255 if (parse
->drive
== FDRIVE_DRV_NONE
)
257 if (drv
->drive
== parse
->drive
||
258 drv
->drive
== FDRIVE_DRV_NONE
) {
259 size
= (parse
->max_head
+ 1) * parse
->max_track
*
261 if (nb_sectors
== size
) {
265 if (first_match
== -1)
270 if (first_match
== -1)
274 parse
= &fd_formats
[match
];
276 nb_heads
= parse
->max_head
+ 1;
277 max_track
= parse
->max_track
;
278 last_sect
= parse
->last_sect
;
279 drv
->drive
= parse
->drive
;
280 FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse
->str
,
281 nb_heads
, max_track
, last_sect
, ro
? "ro" : "rw");
284 drv
->flags
&= ~FDISK_DBL_SIDES
;
286 drv
->flags
|= FDISK_DBL_SIDES
;
288 drv
->max_track
= max_track
;
289 drv
->last_sect
= last_sect
;
292 FLOPPY_DPRINTF("No disk in drive\n");
295 drv
->flags
&= ~FDISK_DBL_SIDES
;
300 static void fd_start (fdrive_t
*drv
)
302 drv
->drflags
|= FDRIVE_MOTOR_ON
;
305 static void fd_stop (fdrive_t
*drv
)
307 drv
->drflags
&= ~FDRIVE_MOTOR_ON
;
310 /* Re-initialise a drives (motor off, repositioned) */
311 static void fd_reset (fdrive_t
*drv
)
317 /********************************************************/
318 /* Intel 82078 floppy disk controller emulation */
320 static void fdctrl_reset (fdctrl_t
*fdctrl
, int do_irq
);
321 static void fdctrl_reset_fifo (fdctrl_t
*fdctrl
);
322 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
323 int dma_pos
, int dma_len
);
324 static void fdctrl_raise_irq (fdctrl_t
*fdctrl
, uint8_t status
);
326 static uint32_t fdctrl_read_statusB (fdctrl_t
*fdctrl
);
327 static uint32_t fdctrl_read_dor (fdctrl_t
*fdctrl
);
328 static void fdctrl_write_dor (fdctrl_t
*fdctrl
, uint32_t value
);
329 static uint32_t fdctrl_read_tape (fdctrl_t
*fdctrl
);
330 static void fdctrl_write_tape (fdctrl_t
*fdctrl
, uint32_t value
);
331 static uint32_t fdctrl_read_main_status (fdctrl_t
*fdctrl
);
332 static void fdctrl_write_rate (fdctrl_t
*fdctrl
, uint32_t value
);
333 static uint32_t fdctrl_read_data (fdctrl_t
*fdctrl
);
334 static void fdctrl_write_data (fdctrl_t
*fdctrl
, uint32_t value
);
335 static uint32_t fdctrl_read_dir (fdctrl_t
*fdctrl
);
338 FD_CTRL_ACTIVE
= 0x01, /* XXX: suppress that */
339 FD_CTRL_RESET
= 0x02,
340 FD_CTRL_SLEEP
= 0x04, /* XXX: suppress that */
341 FD_CTRL_BUSY
= 0x08, /* dma transfer in progress */
355 FD_STATE_STATUS
= 0x01,
356 FD_STATE_DATA
= 0x02,
357 FD_STATE_STATE
= 0x03,
358 FD_STATE_MULTI
= 0x10,
359 FD_STATE_SEEK
= 0x20,
360 FD_STATE_FORMAT
= 0x40,
365 FD_REG_STATUSB
= 0x01,
375 FD_CMD_READ_TRACK
= 0x02,
376 FD_CMD_SPECIFY
= 0x03,
377 FD_CMD_SENSE_DRIVE_STATUS
= 0x04,
380 FD_CMD_RECALIBRATE
= 0x07,
381 FD_CMD_SENSE_INTERRUPT_STATUS
= 0x08,
382 FD_CMD_WRITE_DELETED
= 0x09,
383 FD_CMD_READ_ID
= 0x0a,
384 FD_CMD_READ_DELETED
= 0x0c,
385 FD_CMD_FORMAT_TRACK
= 0x0d,
386 FD_CMD_DUMPREG
= 0x0e,
388 FD_CMD_VERSION
= 0x10,
389 FD_CMD_SCAN_EQUAL
= 0x11,
390 FD_CMD_PERPENDICULAR_MODE
= 0x12,
391 FD_CMD_CONFIGURE
= 0x13,
393 FD_CMD_VERIFY
= 0x16,
394 FD_CMD_POWERDOWN_MODE
= 0x17,
395 FD_CMD_PART_ID
= 0x18,
396 FD_CMD_SCAN_LOW_OR_EQUAL
= 0x19,
397 FD_CMD_SCAN_HIGH_OR_EQUAL
= 0x1d,
399 FD_CMD_OPTION
= 0x33,
400 FD_CMD_RESTORE
= 0x4c,
401 FD_CMD_DRIVE_SPECIFICATION_COMMAND
= 0x8e,
402 FD_CMD_RELATIVE_SEEK_OUT
= 0x8f,
403 FD_CMD_FORMAT_AND_WRITE
= 0xcd,
404 FD_CMD_RELATIVE_SEEK_IN
= 0xcf,
408 FD_CONFIG_PRETRK
= 0xff, /* Pre-compensation set to track 0 */
409 FD_CONFIG_FIFOTHR
= 0x0f, /* FIFO threshold set to 1 byte */
410 FD_CONFIG_POLL
= 0x10, /* Poll enabled */
411 FD_CONFIG_EFIFO
= 0x20, /* FIFO disabled */
412 FD_CONFIG_EIS
= 0x40, /* No implied seeks */
418 FD_SR0_ABNTERM
= 0x40,
419 FD_SR0_INVCMD
= 0x80,
420 FD_SR0_RDYCHG
= 0xc0,
424 FD_DOR_SELMASK
= 0x01,
425 FD_DOR_nRESET
= 0x04,
427 FD_DOR_MOTEN0
= 0x10,
428 FD_DOR_MOTEN1
= 0x20,
429 FD_DOR_MOTEN2
= 0x40,
430 FD_DOR_MOTEN3
= 0x80,
434 FD_TDR_BOOTSEL
= 0x0c,
438 FD_DSR_DRATEMASK
= 0x03,
439 FD_DSR_PWRDOWN
= 0x40,
440 FD_DSR_SWRESET
= 0x80,
444 FD_MSR_DRV0BUSY
= 0x01,
445 FD_MSR_DRV1BUSY
= 0x02,
446 FD_MSR_DRV2BUSY
= 0x04,
447 FD_MSR_DRV3BUSY
= 0x08,
448 FD_MSR_CMDBUSY
= 0x10,
449 FD_MSR_NONDMA
= 0x20,
455 FD_DIR_DSKCHG
= 0x80,
458 #define FD_STATE(state) ((state) & FD_STATE_STATE)
459 #define FD_SET_STATE(state, new_state) \
460 do { (state) = ((state) & ~FD_STATE_STATE) | (new_state); } while (0)
461 #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
462 #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
463 #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
467 /* Controller's identification */
472 target_phys_addr_t io_base
;
473 /* Controller state */
474 QEMUTimer
*result_timer
;
486 uint8_t eot
; /* last wanted sector */
487 /* States kept only to be returned back */
491 /* precompensation */
495 /* Power down config (also with status regB access mode */
503 static uint32_t fdctrl_read (void *opaque
, uint32_t reg
)
505 fdctrl_t
*fdctrl
= opaque
;
508 switch (reg
& 0x07) {
511 // Identify to Linux as S82078B
512 retval
= fdctrl_read_statusB(fdctrl
);
514 retval
= (uint32_t)(-1);
518 retval
= fdctrl_read_statusB(fdctrl
);
521 retval
= fdctrl_read_dor(fdctrl
);
524 retval
= fdctrl_read_tape(fdctrl
);
527 retval
= fdctrl_read_main_status(fdctrl
);
530 retval
= fdctrl_read_data(fdctrl
);
533 retval
= fdctrl_read_dir(fdctrl
);
536 retval
= (uint32_t)(-1);
539 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg
& 7, retval
);
544 static void fdctrl_write (void *opaque
, uint32_t reg
, uint32_t value
)
546 fdctrl_t
*fdctrl
= opaque
;
548 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg
& 7, value
);
550 switch (reg
& 0x07) {
552 fdctrl_write_dor(fdctrl
, value
);
555 fdctrl_write_tape(fdctrl
, value
);
558 fdctrl_write_rate(fdctrl
, value
);
561 fdctrl_write_data(fdctrl
, value
);
568 static uint32_t fdctrl_read_mem (void *opaque
, target_phys_addr_t reg
)
570 return fdctrl_read(opaque
, (uint32_t)reg
);
573 static void fdctrl_write_mem (void *opaque
,
574 target_phys_addr_t reg
, uint32_t value
)
576 fdctrl_write(opaque
, (uint32_t)reg
, value
);
579 static CPUReadMemoryFunc
*fdctrl_mem_read
[3] = {
585 static CPUWriteMemoryFunc
*fdctrl_mem_write
[3] = {
591 static CPUReadMemoryFunc
*fdctrl_mem_read_strict
[3] = {
597 static CPUWriteMemoryFunc
*fdctrl_mem_write_strict
[3] = {
603 static void fd_save (QEMUFile
*f
, fdrive_t
*fd
)
608 qemu_put_8s(f
, &tmp
);
609 qemu_put_8s(f
, &fd
->head
);
610 qemu_put_8s(f
, &fd
->track
);
611 qemu_put_8s(f
, &fd
->sect
);
612 qemu_put_8s(f
, &fd
->dir
);
613 qemu_put_8s(f
, &fd
->rw
);
616 static void fdc_save (QEMUFile
*f
, void *opaque
)
618 fdctrl_t
*s
= opaque
;
620 qemu_put_8s(f
, &s
->state
);
621 qemu_put_8s(f
, &s
->dma_en
);
622 qemu_put_8s(f
, &s
->cur_drv
);
623 qemu_put_8s(f
, &s
->bootsel
);
624 qemu_put_buffer(f
, s
->fifo
, FD_SECTOR_LEN
);
625 qemu_put_be32s(f
, &s
->data_pos
);
626 qemu_put_be32s(f
, &s
->data_len
);
627 qemu_put_8s(f
, &s
->data_state
);
628 qemu_put_8s(f
, &s
->data_dir
);
629 qemu_put_8s(f
, &s
->int_status
);
630 qemu_put_8s(f
, &s
->eot
);
631 qemu_put_8s(f
, &s
->timer0
);
632 qemu_put_8s(f
, &s
->timer1
);
633 qemu_put_8s(f
, &s
->precomp_trk
);
634 qemu_put_8s(f
, &s
->config
);
635 qemu_put_8s(f
, &s
->lock
);
636 qemu_put_8s(f
, &s
->pwrd
);
637 fd_save(f
, &s
->drives
[0]);
638 fd_save(f
, &s
->drives
[1]);
641 static int fd_load (QEMUFile
*f
, fdrive_t
*fd
)
645 qemu_get_8s(f
, &tmp
);
647 qemu_get_8s(f
, &fd
->head
);
648 qemu_get_8s(f
, &fd
->track
);
649 qemu_get_8s(f
, &fd
->sect
);
650 qemu_get_8s(f
, &fd
->dir
);
651 qemu_get_8s(f
, &fd
->rw
);
656 static int fdc_load (QEMUFile
*f
, void *opaque
, int version_id
)
658 fdctrl_t
*s
= opaque
;
664 qemu_get_8s(f
, &s
->state
);
665 qemu_get_8s(f
, &s
->dma_en
);
666 qemu_get_8s(f
, &s
->cur_drv
);
667 qemu_get_8s(f
, &s
->bootsel
);
668 qemu_get_buffer(f
, s
->fifo
, FD_SECTOR_LEN
);
669 qemu_get_be32s(f
, &s
->data_pos
);
670 qemu_get_be32s(f
, &s
->data_len
);
671 qemu_get_8s(f
, &s
->data_state
);
672 qemu_get_8s(f
, &s
->data_dir
);
673 qemu_get_8s(f
, &s
->int_status
);
674 qemu_get_8s(f
, &s
->eot
);
675 qemu_get_8s(f
, &s
->timer0
);
676 qemu_get_8s(f
, &s
->timer1
);
677 qemu_get_8s(f
, &s
->precomp_trk
);
678 qemu_get_8s(f
, &s
->config
);
679 qemu_get_8s(f
, &s
->lock
);
680 qemu_get_8s(f
, &s
->pwrd
);
682 ret
= fd_load(f
, &s
->drives
[0]);
684 ret
= fd_load(f
, &s
->drives
[1]);
689 static void fdctrl_external_reset(void *opaque
)
691 fdctrl_t
*s
= opaque
;
696 static void fdctrl_handle_tc(void *opaque
, int irq
, int level
)
698 //fdctrl_t *s = opaque;
702 FLOPPY_DPRINTF("TC pulsed\n");
706 /* XXX: may change if moved to bdrv */
707 int fdctrl_get_drive_type(fdctrl_t
*fdctrl
, int drive_num
)
709 return fdctrl
->drives
[drive_num
].drive
;
712 /* Change IRQ state */
713 static void fdctrl_reset_irq (fdctrl_t
*fdctrl
)
715 FLOPPY_DPRINTF("Reset interrupt\n");
716 qemu_set_irq(fdctrl
->irq
, 0);
717 fdctrl
->state
&= ~FD_CTRL_INTR
;
720 static void fdctrl_raise_irq (fdctrl_t
*fdctrl
, uint8_t status
)
723 if (fdctrl
->sun4m
&& !fdctrl
->dma_en
) {
724 fdctrl
->state
&= ~FD_CTRL_BUSY
;
725 fdctrl
->int_status
= status
;
728 if (~(fdctrl
->state
& FD_CTRL_INTR
)) {
729 qemu_set_irq(fdctrl
->irq
, 1);
730 fdctrl
->state
|= FD_CTRL_INTR
;
732 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", status
);
733 fdctrl
->int_status
= status
;
736 /* Reset controller */
737 static void fdctrl_reset (fdctrl_t
*fdctrl
, int do_irq
)
741 FLOPPY_DPRINTF("reset controller\n");
742 fdctrl_reset_irq(fdctrl
);
743 /* Initialise controller */
746 fdctrl
->data_pos
= 0;
747 fdctrl
->data_len
= 0;
748 fdctrl
->data_state
= FD_STATE_CMD
;
749 fdctrl
->data_dir
= FD_DIR_WRITE
;
750 for (i
= 0; i
< MAX_FD
; i
++)
751 fd_reset(&fdctrl
->drives
[i
]);
752 fdctrl_reset_fifo(fdctrl
);
754 fdctrl_raise_irq(fdctrl
, FD_SR0_RDYCHG
);
757 static inline fdrive_t
*drv0 (fdctrl_t
*fdctrl
)
759 return &fdctrl
->drives
[fdctrl
->bootsel
];
762 static inline fdrive_t
*drv1 (fdctrl_t
*fdctrl
)
764 return &fdctrl
->drives
[1 - fdctrl
->bootsel
];
767 static fdrive_t
*get_cur_drv (fdctrl_t
*fdctrl
)
769 return fdctrl
->cur_drv
== 0 ? drv0(fdctrl
) : drv1(fdctrl
);
772 /* Status B register : 0x01 (read-only) */
773 static uint32_t fdctrl_read_statusB (fdctrl_t
*fdctrl
)
775 FLOPPY_DPRINTF("status register: 0x00\n");
779 /* Digital output register : 0x02 */
780 static uint32_t fdctrl_read_dor (fdctrl_t
*fdctrl
)
784 /* Drive motors state indicators */
785 if (drv0(fdctrl
)->drflags
& FDRIVE_MOTOR_ON
)
786 retval
|= FD_DOR_MOTEN0
;
787 if (drv1(fdctrl
)->drflags
& FDRIVE_MOTOR_ON
)
788 retval
|= FD_DOR_MOTEN1
;
791 retval
|= FD_DOR_DMAEN
;
792 /* Reset indicator */
793 if (!(fdctrl
->state
& FD_CTRL_RESET
))
794 retval
|= FD_DOR_nRESET
;
796 retval
|= fdctrl
->cur_drv
;
797 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval
);
802 static void fdctrl_write_dor (fdctrl_t
*fdctrl
, uint32_t value
)
805 if (fdctrl
->state
& FD_CTRL_RESET
) {
806 if (!(value
& FD_DOR_nRESET
)) {
807 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
811 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value
);
812 /* Drive motors state indicators */
813 if (value
& FD_DOR_MOTEN1
)
814 fd_start(drv1(fdctrl
));
816 fd_stop(drv1(fdctrl
));
817 if (value
& FD_DOR_MOTEN0
)
818 fd_start(drv0(fdctrl
));
820 fd_stop(drv0(fdctrl
));
823 if (fdctrl
->dma_chann
!= -1)
824 fdctrl
->dma_en
= value
& FD_DOR_DMAEN
? 1 : 0;
827 if (!(value
& FD_DOR_nRESET
)) {
828 if (!(fdctrl
->state
& FD_CTRL_RESET
)) {
829 FLOPPY_DPRINTF("controller enter RESET state\n");
830 fdctrl
->state
|= FD_CTRL_RESET
;
833 if (fdctrl
->state
& FD_CTRL_RESET
) {
834 FLOPPY_DPRINTF("controller out of RESET state\n");
835 fdctrl_reset(fdctrl
, 1);
836 fdctrl
->state
&= ~(FD_CTRL_RESET
| FD_CTRL_SLEEP
);
840 fdctrl
->cur_drv
= value
& FD_DOR_SELMASK
;
843 /* Tape drive register : 0x03 */
844 static uint32_t fdctrl_read_tape (fdctrl_t
*fdctrl
)
848 /* Disk boot selection indicator */
849 retval
|= fdctrl
->bootsel
<< 2;
850 /* Tape indicators: never allowed */
851 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval
);
856 static void fdctrl_write_tape (fdctrl_t
*fdctrl
, uint32_t value
)
859 if (fdctrl
->state
& FD_CTRL_RESET
) {
860 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
863 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value
);
864 /* Disk boot selection indicator */
865 fdctrl
->bootsel
= (value
& FD_TDR_BOOTSEL
) >> 2;
866 /* Tape indicators: never allow */
869 /* Main status register : 0x04 (read) */
870 static uint32_t fdctrl_read_main_status (fdctrl_t
*fdctrl
)
874 fdctrl
->state
&= ~(FD_CTRL_SLEEP
| FD_CTRL_RESET
);
875 if (!(fdctrl
->state
& FD_CTRL_BUSY
)) {
876 /* Data transfer allowed */
877 retval
|= FD_MSR_RQM
;
878 /* Data transfer direction indicator */
879 if (fdctrl
->data_dir
== FD_DIR_READ
)
880 retval
|= FD_MSR_DIO
;
882 /* Should handle FD_MSR_NONDMA for SPECIFY command */
883 /* Command busy indicator */
884 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
||
885 FD_STATE(fdctrl
->data_state
) == FD_STATE_STATUS
)
886 retval
|= FD_MSR_CMDBUSY
;
887 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval
);
892 /* Data select rate register : 0x04 (write) */
893 static void fdctrl_write_rate (fdctrl_t
*fdctrl
, uint32_t value
)
896 if (fdctrl
->state
& FD_CTRL_RESET
) {
897 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
900 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value
);
901 /* Reset: autoclear */
902 if (value
& FD_DSR_SWRESET
) {
903 fdctrl
->state
|= FD_CTRL_RESET
;
904 fdctrl_reset(fdctrl
, 1);
905 fdctrl
->state
&= ~FD_CTRL_RESET
;
907 if (value
& FD_DSR_PWRDOWN
) {
908 fdctrl
->state
|= FD_CTRL_SLEEP
;
909 fdctrl_reset(fdctrl
, 1);
913 static int fdctrl_media_changed(fdrive_t
*drv
)
919 ret
= bdrv_media_changed(drv
->bs
);
926 /* Digital input register : 0x07 (read-only) */
927 static uint32_t fdctrl_read_dir (fdctrl_t
*fdctrl
)
931 if (fdctrl_media_changed(drv0(fdctrl
)) ||
932 fdctrl_media_changed(drv1(fdctrl
)))
933 retval
|= FD_DIR_DSKCHG
;
935 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval
);
940 /* FIFO state control */
941 static void fdctrl_reset_fifo (fdctrl_t
*fdctrl
)
943 fdctrl
->data_dir
= FD_DIR_WRITE
;
944 fdctrl
->data_pos
= 0;
945 FD_SET_STATE(fdctrl
->data_state
, FD_STATE_CMD
);
948 /* Set FIFO status for the host to read */
949 static void fdctrl_set_fifo (fdctrl_t
*fdctrl
, int fifo_len
, int do_irq
)
951 fdctrl
->data_dir
= FD_DIR_READ
;
952 fdctrl
->data_len
= fifo_len
;
953 fdctrl
->data_pos
= 0;
954 FD_SET_STATE(fdctrl
->data_state
, FD_STATE_STATUS
);
956 fdctrl_raise_irq(fdctrl
, 0x00);
959 /* Set an error: unimplemented/unknown command */
960 static void fdctrl_unimplemented (fdctrl_t
*fdctrl
, int direction
)
965 cur_drv
= get_cur_drv(fdctrl
);
966 fdctrl
->fifo
[0] = FD_SR0_ABNTERM
| FD_SR0_SEEK
| (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
967 fdctrl
->fifo
[1] = 0x00;
968 fdctrl
->fifo
[2] = 0x00;
969 fdctrl_set_fifo(fdctrl
, 3, 1);
971 // fdctrl_reset_fifo(fdctrl);
972 fdctrl
->fifo
[0] = FD_SR0_INVCMD
;
973 fdctrl_set_fifo(fdctrl
, 1, 0);
977 /* Seek to next sector */
978 static int fdctrl_seek_to_next_sect (fdctrl_t
*fdctrl
, fdrive_t
*cur_drv
)
980 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
981 cur_drv
->head
, cur_drv
->track
, cur_drv
->sect
,
983 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
985 if (cur_drv
->sect
>= cur_drv
->last_sect
||
986 cur_drv
->sect
== fdctrl
->eot
) {
988 if (FD_MULTI_TRACK(fdctrl
->data_state
)) {
989 if (cur_drv
->head
== 0 &&
990 (cur_drv
->flags
& FDISK_DBL_SIDES
) != 0) {
995 if ((cur_drv
->flags
& FDISK_DBL_SIDES
) == 0)
1002 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1003 cur_drv
->head
, cur_drv
->track
,
1004 cur_drv
->sect
, fd_sector(cur_drv
));
1011 /* Callback for transfer end (stop or abort) */
1012 static void fdctrl_stop_transfer (fdctrl_t
*fdctrl
, uint8_t status0
,
1013 uint8_t status1
, uint8_t status2
)
1017 cur_drv
= get_cur_drv(fdctrl
);
1018 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1019 status0
, status1
, status2
,
1020 status0
| (cur_drv
->head
<< 2) | fdctrl
->cur_drv
);
1021 fdctrl
->fifo
[0] = status0
| (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
1022 fdctrl
->fifo
[1] = status1
;
1023 fdctrl
->fifo
[2] = status2
;
1024 fdctrl
->fifo
[3] = cur_drv
->track
;
1025 fdctrl
->fifo
[4] = cur_drv
->head
;
1026 fdctrl
->fifo
[5] = cur_drv
->sect
;
1027 fdctrl
->fifo
[6] = FD_SECTOR_SC
;
1028 fdctrl
->data_dir
= FD_DIR_READ
;
1029 if (fdctrl
->state
& FD_CTRL_BUSY
) {
1030 DMA_release_DREQ(fdctrl
->dma_chann
);
1031 fdctrl
->state
&= ~FD_CTRL_BUSY
;
1033 fdctrl_set_fifo(fdctrl
, 7, 1);
1036 /* Prepare a data transfer (either DMA or FIFO) */
1037 static void fdctrl_start_transfer (fdctrl_t
*fdctrl
, int direction
)
1043 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1044 cur_drv
= get_cur_drv(fdctrl
);
1045 kt
= fdctrl
->fifo
[2];
1046 kh
= fdctrl
->fifo
[3];
1047 ks
= fdctrl
->fifo
[4];
1048 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1049 fdctrl
->cur_drv
, kh
, kt
, ks
,
1050 _fd_sector(kh
, kt
, ks
, cur_drv
->last_sect
));
1052 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& 0x40)) {
1055 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1056 fdctrl
->fifo
[3] = kt
;
1057 fdctrl
->fifo
[4] = kh
;
1058 fdctrl
->fifo
[5] = ks
;
1062 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x80, 0x00);
1063 fdctrl
->fifo
[3] = kt
;
1064 fdctrl
->fifo
[4] = kh
;
1065 fdctrl
->fifo
[5] = ks
;
1068 /* No seek enabled */
1069 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1070 fdctrl
->fifo
[3] = kt
;
1071 fdctrl
->fifo
[4] = kh
;
1072 fdctrl
->fifo
[5] = ks
;
1080 /* Set the FIFO state */
1081 fdctrl
->data_dir
= direction
;
1082 fdctrl
->data_pos
= 0;
1083 FD_SET_STATE(fdctrl
->data_state
, FD_STATE_DATA
); /* FIFO ready for data */
1084 if (fdctrl
->fifo
[0] & 0x80)
1085 fdctrl
->data_state
|= FD_STATE_MULTI
;
1087 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1089 fdctrl
->data_state
|= FD_STATE_SEEK
;
1091 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1092 if (fdctrl
->fifo
[5] == 00) {
1093 fdctrl
->data_len
= fdctrl
->fifo
[8];
1096 fdctrl
->data_len
= 128 << (fdctrl
->fifo
[5] > 7 ? 7 : fdctrl
->fifo
[5]);
1097 tmp
= (cur_drv
->last_sect
- ks
+ 1);
1098 if (fdctrl
->fifo
[0] & 0x80)
1099 tmp
+= cur_drv
->last_sect
;
1100 fdctrl
->data_len
*= tmp
;
1102 fdctrl
->eot
= fdctrl
->fifo
[6];
1103 if (fdctrl
->dma_en
) {
1105 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1106 dma_mode
= DMA_get_channel_mode(fdctrl
->dma_chann
);
1107 dma_mode
= (dma_mode
>> 2) & 3;
1108 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1109 dma_mode
, direction
,
1110 (128 << fdctrl
->fifo
[5]) *
1111 (cur_drv
->last_sect
- ks
+ 1), fdctrl
->data_len
);
1112 if (((direction
== FD_DIR_SCANE
|| direction
== FD_DIR_SCANL
||
1113 direction
== FD_DIR_SCANH
) && dma_mode
== 0) ||
1114 (direction
== FD_DIR_WRITE
&& dma_mode
== 2) ||
1115 (direction
== FD_DIR_READ
&& dma_mode
== 1)) {
1116 /* No access is allowed until DMA transfer has completed */
1117 fdctrl
->state
|= FD_CTRL_BUSY
;
1118 /* Now, we just have to wait for the DMA controller to
1121 DMA_hold_DREQ(fdctrl
->dma_chann
);
1122 DMA_schedule(fdctrl
->dma_chann
);
1125 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode
, direction
);
1128 FLOPPY_DPRINTF("start non-DMA transfer\n");
1129 /* IO based transfer: calculate len */
1130 fdctrl_raise_irq(fdctrl
, 0x00);
1135 /* Prepare a transfer of deleted data */
1136 static void fdctrl_start_transfer_del (fdctrl_t
*fdctrl
, int direction
)
1138 /* We don't handle deleted data,
1139 * so we don't return *ANYTHING*
1141 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1144 /* handlers for DMA transfers */
1145 static int fdctrl_transfer_handler (void *opaque
, int nchan
,
1146 int dma_pos
, int dma_len
)
1150 int len
, start_pos
, rel_pos
;
1151 uint8_t status0
= 0x00, status1
= 0x00, status2
= 0x00;
1154 if (!(fdctrl
->state
& FD_CTRL_BUSY
)) {
1155 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1158 cur_drv
= get_cur_drv(fdctrl
);
1159 if (fdctrl
->data_dir
== FD_DIR_SCANE
|| fdctrl
->data_dir
== FD_DIR_SCANL
||
1160 fdctrl
->data_dir
== FD_DIR_SCANH
)
1162 if (dma_len
> fdctrl
->data_len
)
1163 dma_len
= fdctrl
->data_len
;
1164 if (cur_drv
->bs
== NULL
) {
1165 if (fdctrl
->data_dir
== FD_DIR_WRITE
)
1166 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1168 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1170 goto transfer_error
;
1172 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1173 for (start_pos
= fdctrl
->data_pos
; fdctrl
->data_pos
< dma_len
;) {
1174 len
= dma_len
- fdctrl
->data_pos
;
1175 if (len
+ rel_pos
> FD_SECTOR_LEN
)
1176 len
= FD_SECTOR_LEN
- rel_pos
;
1177 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1178 "(%d-0x%08x 0x%08x)\n", len
, dma_len
, fdctrl
->data_pos
,
1179 fdctrl
->data_len
, fdctrl
->cur_drv
, cur_drv
->head
,
1180 cur_drv
->track
, cur_drv
->sect
, fd_sector(cur_drv
),
1181 fd_sector(cur_drv
) * FD_SECTOR_LEN
);
1182 if (fdctrl
->data_dir
!= FD_DIR_WRITE
||
1183 len
< FD_SECTOR_LEN
|| rel_pos
!= 0) {
1184 /* READ & SCAN commands and realign to a sector for WRITE */
1185 if (bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
),
1186 fdctrl
->fifo
, 1) < 0) {
1187 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1188 fd_sector(cur_drv
));
1189 /* Sure, image size is too small... */
1190 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1193 switch (fdctrl
->data_dir
) {
1196 DMA_write_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1197 fdctrl
->data_pos
, len
);
1200 /* WRITE commands */
1201 DMA_read_memory (nchan
, fdctrl
->fifo
+ rel_pos
,
1202 fdctrl
->data_pos
, len
);
1203 if (bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
),
1204 fdctrl
->fifo
, 1) < 0) {
1205 FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv
));
1206 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1207 goto transfer_error
;
1213 uint8_t tmpbuf
[FD_SECTOR_LEN
];
1215 DMA_read_memory (nchan
, tmpbuf
, fdctrl
->data_pos
, len
);
1216 ret
= memcmp(tmpbuf
, fdctrl
->fifo
+ rel_pos
, len
);
1221 if ((ret
< 0 && fdctrl
->data_dir
== FD_DIR_SCANL
) ||
1222 (ret
> 0 && fdctrl
->data_dir
== FD_DIR_SCANH
)) {
1229 fdctrl
->data_pos
+= len
;
1230 rel_pos
= fdctrl
->data_pos
% FD_SECTOR_LEN
;
1232 /* Seek to next sector */
1233 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
))
1238 len
= fdctrl
->data_pos
- start_pos
;
1239 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1240 fdctrl
->data_pos
, len
, fdctrl
->data_len
);
1241 if (fdctrl
->data_dir
== FD_DIR_SCANE
||
1242 fdctrl
->data_dir
== FD_DIR_SCANL
||
1243 fdctrl
->data_dir
== FD_DIR_SCANH
)
1245 if (FD_DID_SEEK(fdctrl
->data_state
))
1246 status0
|= FD_SR0_SEEK
;
1247 fdctrl
->data_len
-= len
;
1248 // if (fdctrl->data_len == 0)
1249 fdctrl_stop_transfer(fdctrl
, status0
, status1
, status2
);
1255 /* Data register : 0x05 */
1256 static uint32_t fdctrl_read_data (fdctrl_t
*fdctrl
)
1259 uint32_t retval
= 0;
1262 cur_drv
= get_cur_drv(fdctrl
);
1263 fdctrl
->state
&= ~FD_CTRL_SLEEP
;
1264 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_CMD
) {
1265 FLOPPY_ERROR("can't read data in CMD state\n");
1268 pos
= fdctrl
->data_pos
;
1269 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
) {
1270 pos
%= FD_SECTOR_LEN
;
1272 if (fdctrl
->data_pos
!= 0)
1273 if (!fdctrl_seek_to_next_sect(fdctrl
, cur_drv
)) {
1274 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1275 fd_sector(cur_drv
));
1278 bdrv_read(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1);
1281 retval
= fdctrl
->fifo
[pos
];
1282 if (++fdctrl
->data_pos
== fdctrl
->data_len
) {
1283 fdctrl
->data_pos
= 0;
1284 /* Switch from transfer mode to status mode
1285 * then from status mode to command mode
1287 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
) {
1288 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1290 fdctrl_reset_fifo(fdctrl
);
1291 fdctrl_reset_irq(fdctrl
);
1294 FLOPPY_DPRINTF("data register: 0x%02x\n", retval
);
1299 static void fdctrl_format_sector (fdctrl_t
*fdctrl
)
1305 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1306 cur_drv
= get_cur_drv(fdctrl
);
1307 kt
= fdctrl
->fifo
[6];
1308 kh
= fdctrl
->fifo
[7];
1309 ks
= fdctrl
->fifo
[8];
1310 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1311 fdctrl
->cur_drv
, kh
, kt
, ks
,
1312 _fd_sector(kh
, kt
, ks
, cur_drv
->last_sect
));
1314 switch (fd_seek(cur_drv
, kh
, kt
, ks
, fdctrl
->config
& FD_CONFIG_EIS
)) {
1317 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1318 fdctrl
->fifo
[3] = kt
;
1319 fdctrl
->fifo
[4] = kh
;
1320 fdctrl
->fifo
[5] = ks
;
1324 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x80, 0x00);
1325 fdctrl
->fifo
[3] = kt
;
1326 fdctrl
->fifo
[4] = kh
;
1327 fdctrl
->fifo
[5] = ks
;
1330 /* No seek enabled */
1331 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
, 0x00, 0x00);
1332 fdctrl
->fifo
[3] = kt
;
1333 fdctrl
->fifo
[4] = kh
;
1334 fdctrl
->fifo
[5] = ks
;
1338 fdctrl
->data_state
|= FD_STATE_SEEK
;
1343 memset(fdctrl
->fifo
, 0, FD_SECTOR_LEN
);
1344 if (cur_drv
->bs
== NULL
||
1345 bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1) < 0) {
1346 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv
));
1347 fdctrl_stop_transfer(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
, 0x00, 0x00);
1349 if (cur_drv
->sect
== cur_drv
->last_sect
) {
1350 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1351 /* Last sector done */
1352 if (FD_DID_SEEK(fdctrl
->data_state
))
1353 fdctrl_stop_transfer(fdctrl
, FD_SR0_SEEK
, 0x00, 0x00);
1355 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1358 fdctrl
->data_pos
= 0;
1359 fdctrl
->data_len
= 4;
1364 static void fdctrl_handle_lock (fdctrl_t
*fdctrl
, int direction
)
1366 fdctrl
->lock
= (fdctrl
->fifo
[0] & 0x80) ? 1 : 0;
1367 fdctrl
->fifo
[0] = fdctrl
->lock
<< 4;
1368 fdctrl_set_fifo(fdctrl
, 1, fdctrl
->lock
);
1371 static void fdctrl_handle_dumpreg (fdctrl_t
*fdctrl
, int direction
)
1373 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1375 /* Drives position */
1376 fdctrl
->fifo
[0] = drv0(fdctrl
)->track
;
1377 fdctrl
->fifo
[1] = drv1(fdctrl
)->track
;
1378 fdctrl
->fifo
[2] = 0;
1379 fdctrl
->fifo
[3] = 0;
1381 fdctrl
->fifo
[4] = fdctrl
->timer0
;
1382 fdctrl
->fifo
[5] = (fdctrl
->timer1
<< 1) | fdctrl
->dma_en
;
1383 fdctrl
->fifo
[6] = cur_drv
->last_sect
;
1384 fdctrl
->fifo
[7] = (fdctrl
->lock
<< 7) |
1385 (cur_drv
->perpendicular
<< 2);
1386 fdctrl
->fifo
[8] = fdctrl
->config
;
1387 fdctrl
->fifo
[9] = fdctrl
->precomp_trk
;
1388 fdctrl_set_fifo(fdctrl
, 10, 0);
1391 static void fdctrl_handle_version (fdctrl_t
*fdctrl
, int direction
)
1393 /* Controller's version */
1394 fdctrl
->fifo
[0] = fdctrl
->version
;
1395 fdctrl_set_fifo(fdctrl
, 1, 1);
1398 static void fdctrl_handle_partid (fdctrl_t
*fdctrl
, int direction
)
1400 fdctrl
->fifo
[0] = 0x41; /* Stepping 1 */
1401 fdctrl_set_fifo(fdctrl
, 1, 0);
1404 static void fdctrl_handle_restore (fdctrl_t
*fdctrl
, int direction
)
1406 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1408 /* Drives position */
1409 drv0(fdctrl
)->track
= fdctrl
->fifo
[3];
1410 drv1(fdctrl
)->track
= fdctrl
->fifo
[4];
1412 fdctrl
->timer0
= fdctrl
->fifo
[7];
1413 fdctrl
->timer1
= fdctrl
->fifo
[8];
1414 cur_drv
->last_sect
= fdctrl
->fifo
[9];
1415 fdctrl
->lock
= fdctrl
->fifo
[10] >> 7;
1416 cur_drv
->perpendicular
= (fdctrl
->fifo
[10] >> 2) & 0xF;
1417 fdctrl
->config
= fdctrl
->fifo
[11];
1418 fdctrl
->precomp_trk
= fdctrl
->fifo
[12];
1419 fdctrl
->pwrd
= fdctrl
->fifo
[13];
1420 fdctrl_reset_fifo(fdctrl
);
1423 static void fdctrl_handle_save (fdctrl_t
*fdctrl
, int direction
)
1425 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1427 fdctrl
->fifo
[0] = 0;
1428 fdctrl
->fifo
[1] = 0;
1429 /* Drives position */
1430 fdctrl
->fifo
[2] = drv0(fdctrl
)->track
;
1431 fdctrl
->fifo
[3] = drv1(fdctrl
)->track
;
1432 fdctrl
->fifo
[4] = 0;
1433 fdctrl
->fifo
[5] = 0;
1435 fdctrl
->fifo
[6] = fdctrl
->timer0
;
1436 fdctrl
->fifo
[7] = fdctrl
->timer1
;
1437 fdctrl
->fifo
[8] = cur_drv
->last_sect
;
1438 fdctrl
->fifo
[9] = (fdctrl
->lock
<< 7) |
1439 (cur_drv
->perpendicular
<< 2);
1440 fdctrl
->fifo
[10] = fdctrl
->config
;
1441 fdctrl
->fifo
[11] = fdctrl
->precomp_trk
;
1442 fdctrl
->fifo
[12] = fdctrl
->pwrd
;
1443 fdctrl
->fifo
[13] = 0;
1444 fdctrl
->fifo
[14] = 0;
1445 fdctrl_set_fifo(fdctrl
, 15, 1);
1448 static void fdctrl_handle_readid (fdctrl_t
*fdctrl
, int direction
)
1450 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1452 /* XXX: should set main status register to busy */
1453 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1454 qemu_mod_timer(fdctrl
->result_timer
,
1455 qemu_get_clock(vm_clock
) + (ticks_per_sec
/ 50));
1458 static void fdctrl_handle_format_track (fdctrl_t
*fdctrl
, int direction
)
1462 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1463 cur_drv
= get_cur_drv(fdctrl
);
1464 fdctrl
->data_state
|= FD_STATE_FORMAT
;
1465 if (fdctrl
->fifo
[0] & 0x80)
1466 fdctrl
->data_state
|= FD_STATE_MULTI
;
1468 fdctrl
->data_state
&= ~FD_STATE_MULTI
;
1469 fdctrl
->data_state
&= ~FD_STATE_SEEK
;
1471 fdctrl
->fifo
[2] > 7 ? 16384 : 128 << fdctrl
->fifo
[2];
1473 cur_drv
->last_sect
=
1474 cur_drv
->flags
& FDISK_DBL_SIDES
? fdctrl
->fifo
[3] :
1475 fdctrl
->fifo
[3] / 2;
1477 cur_drv
->last_sect
= fdctrl
->fifo
[3];
1479 /* TODO: implement format using DMA expected by the Bochs BIOS
1480 * and Linux fdformat (read 3 bytes per sector via DMA and fill
1481 * the sector with the specified fill byte
1483 fdctrl
->data_state
&= ~FD_STATE_FORMAT
;
1484 fdctrl_stop_transfer(fdctrl
, 0x00, 0x00, 0x00);
1487 static void fdctrl_handle_specify (fdctrl_t
*fdctrl
, int direction
)
1489 fdctrl
->timer0
= (fdctrl
->fifo
[1] >> 4) & 0xF;
1490 fdctrl
->timer1
= fdctrl
->fifo
[2] >> 1;
1491 fdctrl
->dma_en
= 1 - (fdctrl
->fifo
[2] & 1) ;
1492 /* No result back */
1493 fdctrl_reset_fifo(fdctrl
);
1496 static void fdctrl_handle_sense_drive_status (fdctrl_t
*fdctrl
, int direction
)
1500 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1501 cur_drv
= get_cur_drv(fdctrl
);
1502 cur_drv
->head
= (fdctrl
->fifo
[1] >> 2) & 1;
1503 /* 1 Byte status back */
1504 fdctrl
->fifo
[0] = (cur_drv
->ro
<< 6) |
1505 (cur_drv
->track
== 0 ? 0x10 : 0x00) |
1506 (cur_drv
->head
<< 2) |
1509 fdctrl_set_fifo(fdctrl
, 1, 0);
1512 static void fdctrl_handle_recalibrate (fdctrl_t
*fdctrl
, int direction
)
1516 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1517 cur_drv
= get_cur_drv(fdctrl
);
1518 fd_recalibrate(cur_drv
);
1519 fdctrl_reset_fifo(fdctrl
);
1520 /* Raise Interrupt */
1521 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1524 static void fdctrl_handle_sense_interrupt_status (fdctrl_t
*fdctrl
, int direction
)
1526 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1530 fdctrl
->int_status
| (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
1532 /* XXX: int_status handling is broken for read/write
1533 commands, so we do this hack. It should be suppressed
1536 0x20 | (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
1538 fdctrl
->fifo
[1] = cur_drv
->track
;
1539 fdctrl_set_fifo(fdctrl
, 2, 0);
1540 fdctrl_reset_irq(fdctrl
);
1541 fdctrl
->int_status
= FD_SR0_RDYCHG
;
1544 static void fdctrl_handle_seek (fdctrl_t
*fdctrl
, int direction
)
1548 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1549 cur_drv
= get_cur_drv(fdctrl
);
1551 if (fdctrl
->fifo
[2] <= cur_drv
->track
)
1555 fdctrl_reset_fifo(fdctrl
);
1556 if (fdctrl
->fifo
[2] > cur_drv
->max_track
) {
1557 fdctrl_raise_irq(fdctrl
, FD_SR0_ABNTERM
| FD_SR0_SEEK
);
1559 cur_drv
->track
= fdctrl
->fifo
[2];
1560 /* Raise Interrupt */
1561 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1565 static void fdctrl_handle_perpendicular_mode (fdctrl_t
*fdctrl
, int direction
)
1567 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1569 if (fdctrl
->fifo
[1] & 0x80)
1570 cur_drv
->perpendicular
= fdctrl
->fifo
[1] & 0x7;
1571 /* No result back */
1572 fdctrl_reset_fifo(fdctrl
);
1575 static void fdctrl_handle_configure (fdctrl_t
*fdctrl
, int direction
)
1577 fdctrl
->config
= fdctrl
->fifo
[2];
1578 fdctrl
->precomp_trk
= fdctrl
->fifo
[3];
1579 /* No result back */
1580 fdctrl_reset_fifo(fdctrl
);
1583 static void fdctrl_handle_powerdown_mode (fdctrl_t
*fdctrl
, int direction
)
1585 fdctrl
->pwrd
= fdctrl
->fifo
[1];
1586 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1587 fdctrl_set_fifo(fdctrl
, 1, 1);
1590 static void fdctrl_handle_option (fdctrl_t
*fdctrl
, int direction
)
1592 /* No result back */
1593 fdctrl_reset_fifo(fdctrl
);
1596 static void fdctrl_handle_drive_specification_command (fdctrl_t
*fdctrl
, int direction
)
1598 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1600 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x80) {
1601 /* Command parameters done */
1602 if (fdctrl
->fifo
[fdctrl
->data_pos
- 1] & 0x40) {
1603 fdctrl
->fifo
[0] = fdctrl
->fifo
[1];
1604 fdctrl
->fifo
[2] = 0;
1605 fdctrl
->fifo
[3] = 0;
1606 fdctrl_set_fifo(fdctrl
, 4, 1);
1608 fdctrl_reset_fifo(fdctrl
);
1610 } else if (fdctrl
->data_len
> 7) {
1612 fdctrl
->fifo
[0] = 0x80 |
1613 (cur_drv
->head
<< 2) | fdctrl
->cur_drv
;
1614 fdctrl_set_fifo(fdctrl
, 1, 1);
1618 static void fdctrl_handle_relative_seek_out (fdctrl_t
*fdctrl
, int direction
)
1620 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1622 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1623 cur_drv
= get_cur_drv(fdctrl
);
1626 if (fdctrl
->fifo
[2] + cur_drv
->track
>= cur_drv
->max_track
) {
1627 cur_drv
->track
= cur_drv
->max_track
- 1;
1629 cur_drv
->track
+= fdctrl
->fifo
[2];
1631 fdctrl_reset_fifo(fdctrl
);
1632 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1635 static void fdctrl_handle_relative_seek_in (fdctrl_t
*fdctrl
, int direction
)
1637 fdrive_t
*cur_drv
= get_cur_drv(fdctrl
);
1639 fdctrl
->cur_drv
= fdctrl
->fifo
[1] & FD_DOR_SELMASK
;
1640 cur_drv
= get_cur_drv(fdctrl
);
1643 if (fdctrl
->fifo
[2] > cur_drv
->track
) {
1646 cur_drv
->track
-= fdctrl
->fifo
[2];
1648 fdctrl_reset_fifo(fdctrl
);
1649 /* Raise Interrupt */
1650 fdctrl_raise_irq(fdctrl
, FD_SR0_SEEK
);
1653 static const struct {
1658 void (*handler
)(fdctrl_t
*fdctrl
, int direction
);
1661 { FD_CMD_READ
, 0x1f, "READ", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1662 { FD_CMD_WRITE
, 0x3f, "WRITE", 8, fdctrl_start_transfer
, FD_DIR_WRITE
},
1663 { FD_CMD_SEEK
, 0xff, "SEEK", 2, fdctrl_handle_seek
},
1664 { FD_CMD_SENSE_INTERRUPT_STATUS
, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status
},
1665 { FD_CMD_RECALIBRATE
, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate
},
1666 { FD_CMD_FORMAT_TRACK
, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track
},
1667 { FD_CMD_READ_TRACK
, 0xbf, "READ TRACK", 8, fdctrl_start_transfer
, FD_DIR_READ
},
1668 { FD_CMD_RESTORE
, 0xff, "RESTORE", 17, fdctrl_handle_restore
}, /* part of READ DELETED DATA */
1669 { FD_CMD_SAVE
, 0xff, "SAVE", 0, fdctrl_handle_save
}, /* part of READ DELETED DATA */
1670 { FD_CMD_READ_DELETED
, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_READ
},
1671 { FD_CMD_SCAN_EQUAL
, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANE
},
1672 { FD_CMD_VERIFY
, 0x1f, "VERIFY", 8, fdctrl_unimplemented
},
1673 { FD_CMD_SCAN_LOW_OR_EQUAL
, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANL
},
1674 { FD_CMD_SCAN_HIGH_OR_EQUAL
, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer
, FD_DIR_SCANH
},
1675 { FD_CMD_WRITE_DELETED
, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del
, FD_DIR_WRITE
},
1676 { FD_CMD_READ_ID
, 0xbf, "READ ID", 1, fdctrl_handle_readid
},
1677 { FD_CMD_SPECIFY
, 0xff, "SPECIFY", 2, fdctrl_handle_specify
},
1678 { FD_CMD_SENSE_DRIVE_STATUS
, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status
},
1679 { FD_CMD_PERPENDICULAR_MODE
, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode
},
1680 { FD_CMD_CONFIGURE
, 0xff, "CONFIGURE", 3, fdctrl_handle_configure
},
1681 { FD_CMD_POWERDOWN_MODE
, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode
},
1682 { FD_CMD_OPTION
, 0xff, "OPTION", 1, fdctrl_handle_option
},
1683 { FD_CMD_DRIVE_SPECIFICATION_COMMAND
, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command
},
1684 { FD_CMD_RELATIVE_SEEK_OUT
, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out
},
1685 { FD_CMD_FORMAT_AND_WRITE
, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented
},
1686 { FD_CMD_RELATIVE_SEEK_IN
, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in
},
1687 { FD_CMD_LOCK
, 0x7f, "LOCK", 0, fdctrl_handle_lock
},
1688 { FD_CMD_DUMPREG
, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg
},
1689 { FD_CMD_VERSION
, 0xff, "VERSION", 0, fdctrl_handle_version
},
1690 { FD_CMD_PART_ID
, 0xff, "PART ID", 0, fdctrl_handle_partid
},
1691 { FD_CMD_WRITE
, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer
, FD_DIR_WRITE
}, /* not in specification ; BeOS 4.5 bug */
1692 { 0, 0, "unknown", 0, fdctrl_unimplemented
}, /* default handler */
1694 /* Associate command to an index in the 'handlers' array */
1695 static uint8_t command_to_handler
[256];
1697 static void fdctrl_write_data (fdctrl_t
*fdctrl
, uint32_t value
)
1702 cur_drv
= get_cur_drv(fdctrl
);
1704 if (fdctrl
->state
& FD_CTRL_RESET
) {
1705 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1708 fdctrl
->state
&= ~FD_CTRL_SLEEP
;
1709 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_STATUS
) {
1710 FLOPPY_ERROR("can't write data in status mode\n");
1713 /* Is it write command time ? */
1714 if (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
) {
1715 /* FIFO data write */
1716 fdctrl
->fifo
[fdctrl
->data_pos
++] = value
;
1717 if (fdctrl
->data_pos
% FD_SECTOR_LEN
== (FD_SECTOR_LEN
- 1) ||
1718 fdctrl
->data_pos
== fdctrl
->data_len
) {
1719 bdrv_write(cur_drv
->bs
, fd_sector(cur_drv
), fdctrl
->fifo
, 1);
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 (FD_STATE(fdctrl
->data_state
) == FD_STATE_DATA
)
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_t
*fdctrl
= opaque
;
1760 fdrive_t
*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 /* Init functions */
1773 static fdctrl_t
*fdctrl_init_common (qemu_irq irq
, int dma_chann
,
1774 target_phys_addr_t io_base
,
1775 BlockDriverState
**fds
)
1780 /* Fill 'command_to_handler' lookup table */
1781 for (i
= sizeof(handlers
)/sizeof(handlers
[0]) - 1; i
>= 0; i
--) {
1782 for (j
= 0; j
< sizeof(command_to_handler
); j
++) {
1783 if ((j
& handlers
[i
].mask
) == handlers
[i
].value
)
1784 command_to_handler
[j
] = i
;
1788 FLOPPY_DPRINTF("init controller\n");
1789 fdctrl
= qemu_mallocz(sizeof(fdctrl_t
));
1792 fdctrl
->fifo
= qemu_memalign(512, FD_SECTOR_LEN
);
1793 if (fdctrl
->fifo
== NULL
) {
1797 fdctrl
->result_timer
= qemu_new_timer(vm_clock
,
1798 fdctrl_result_timer
, fdctrl
);
1800 fdctrl
->version
= 0x90; /* Intel 82078 controller */
1802 fdctrl
->dma_chann
= dma_chann
;
1803 fdctrl
->io_base
= io_base
;
1804 fdctrl
->config
= FD_CONFIG_EIS
| FD_CONFIG_EFIFO
; /* Implicit seek, polling & FIFO enabled */
1805 if (fdctrl
->dma_chann
!= -1) {
1807 DMA_register_channel(dma_chann
, &fdctrl_transfer_handler
, fdctrl
);
1811 for (i
= 0; i
< MAX_FD
; i
++) {
1812 fd_init(&fdctrl
->drives
[i
], fds
[i
]);
1814 fdctrl_reset(fdctrl
, 0);
1815 fdctrl
->state
= FD_CTRL_ACTIVE
;
1816 register_savevm("fdc", io_base
, 1, fdc_save
, fdc_load
, fdctrl
);
1817 qemu_register_reset(fdctrl_external_reset
, fdctrl
);
1818 for (i
= 0; i
< MAX_FD
; i
++) {
1819 fd_revalidate(&fdctrl
->drives
[i
]);
1825 fdctrl_t
*fdctrl_init (qemu_irq irq
, int dma_chann
, int mem_mapped
,
1826 target_phys_addr_t io_base
,
1827 BlockDriverState
**fds
)
1832 fdctrl
= fdctrl_init_common(irq
, dma_chann
, io_base
, fds
);
1836 io_mem
= cpu_register_io_memory(0, fdctrl_mem_read
, fdctrl_mem_write
,
1838 cpu_register_physical_memory(io_base
, 0x08, io_mem
);
1840 register_ioport_read((uint32_t)io_base
+ 0x01, 5, 1, &fdctrl_read
,
1842 register_ioport_read((uint32_t)io_base
+ 0x07, 1, 1, &fdctrl_read
,
1844 register_ioport_write((uint32_t)io_base
+ 0x01, 5, 1, &fdctrl_write
,
1846 register_ioport_write((uint32_t)io_base
+ 0x07, 1, 1, &fdctrl_write
,
1853 fdctrl_t
*sun4m_fdctrl_init (qemu_irq irq
, target_phys_addr_t io_base
,
1854 BlockDriverState
**fds
, qemu_irq
*fdc_tc
)
1859 fdctrl
= fdctrl_init_common(irq
, 0, io_base
, fds
);
1861 io_mem
= cpu_register_io_memory(0, fdctrl_mem_read_strict
,
1862 fdctrl_mem_write_strict
,
1864 cpu_register_physical_memory(io_base
, 0x08, io_mem
);
1865 *fdc_tc
= *qemu_allocate_irqs(fdctrl_handle_tc
, fdctrl
, 1);