2 * IDE ATAPI floppy driver.
4 * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il>
5 * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net>
6 * Copyright (C) 2005 Bartlomiej Zolnierkiewicz
8 * This driver supports the following IDE floppy drives:
10 * LS-120/240 SuperDisk
12 * Iomega PC Card Clik!/PocketZip
14 * For a historical changelog see
15 * Documentation/ide/ChangeLog.ide-floppy.1996-2002
18 #define DRV_NAME "ide-floppy"
20 #define IDEFLOPPY_VERSION "1.00"
22 #include <linux/module.h>
23 #include <linux/types.h>
24 #include <linux/string.h>
25 #include <linux/kernel.h>
26 #include <linux/delay.h>
27 #include <linux/timer.h>
29 #include <linux/interrupt.h>
30 #include <linux/major.h>
31 #include <linux/errno.h>
32 #include <linux/genhd.h>
33 #include <linux/slab.h>
34 #include <linux/cdrom.h>
35 #include <linux/ide.h>
36 #include <linux/hdreg.h>
37 #include <linux/bitops.h>
38 #include <linux/mutex.h>
39 #include <linux/scatterlist.h>
41 #include <scsi/scsi_ioctl.h>
43 #include <asm/byteorder.h>
44 #include <linux/irq.h>
45 #include <linux/uaccess.h>
47 #include <asm/unaligned.h>
49 #include "ide-floppy.h"
51 /* define to see debug info */
52 #define IDEFLOPPY_DEBUG_LOG 0
54 /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
55 #define IDEFLOPPY_DEBUG(fmt, args...)
57 #if IDEFLOPPY_DEBUG_LOG
58 #define debug_log(fmt, args...) \
59 printk(KERN_INFO "ide-floppy: " fmt, ## args)
61 #define debug_log(fmt, args...) do {} while (0)
65 * After each failed packet command we issue a request sense command and retry
66 * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
68 #define IDEFLOPPY_MAX_PC_RETRIES 3
70 /* format capacities descriptor codes */
71 #define CAPACITY_INVALID 0x00
72 #define CAPACITY_UNFORMATTED 0x01
73 #define CAPACITY_CURRENT 0x02
74 #define CAPACITY_NO_CARTRIDGE 0x03
76 #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
78 /* Error code returned in rq->errors to the higher part of the driver. */
79 #define IDEFLOPPY_ERROR_GENERAL 101
81 static DEFINE_MUTEX(idefloppy_ref_mutex
);
83 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
85 #define ide_floppy_g(disk) \
86 container_of((disk)->private_data, struct ide_floppy_obj, driver)
88 static void idefloppy_cleanup_obj(struct kref
*);
90 static struct ide_floppy_obj
*ide_floppy_get(struct gendisk
*disk
)
92 struct ide_floppy_obj
*floppy
= NULL
;
94 mutex_lock(&idefloppy_ref_mutex
);
95 floppy
= ide_floppy_g(disk
);
97 if (ide_device_get(floppy
->drive
))
100 kref_get(&floppy
->kref
);
102 mutex_unlock(&idefloppy_ref_mutex
);
106 static void ide_floppy_put(struct ide_floppy_obj
*floppy
)
108 ide_drive_t
*drive
= floppy
->drive
;
110 mutex_lock(&idefloppy_ref_mutex
);
111 kref_put(&floppy
->kref
, idefloppy_cleanup_obj
);
112 ide_device_put(drive
);
113 mutex_unlock(&idefloppy_ref_mutex
);
117 * Used to finish servicing a request. For read/write requests, we will call
118 * ide_end_request to pass to the next buffer.
120 static int idefloppy_end_request(ide_drive_t
*drive
, int uptodate
, int nsecs
)
122 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
123 struct request
*rq
= HWGROUP(drive
)->rq
;
126 debug_log("Reached %s\n", __func__
);
129 case 0: error
= IDEFLOPPY_ERROR_GENERAL
; break;
130 case 1: error
= 0; break;
131 default: error
= uptodate
;
134 floppy
->failed_pc
= NULL
;
135 /* Why does this happen? */
138 if (!blk_special_request(rq
)) {
139 /* our real local end request function */
140 ide_end_request(drive
, uptodate
, nsecs
);
144 /* fixme: need to move this local also */
145 ide_end_drive_cmd(drive
, 0, 0);
149 static void idefloppy_update_buffers(ide_drive_t
*drive
,
150 struct ide_atapi_pc
*pc
)
152 struct request
*rq
= pc
->rq
;
153 struct bio
*bio
= rq
->bio
;
155 while ((bio
= rq
->bio
) != NULL
)
156 idefloppy_end_request(drive
, 1, 0);
159 static void ide_floppy_callback(ide_drive_t
*drive
, int dsc
)
161 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
162 struct ide_atapi_pc
*pc
= drive
->pc
;
163 int uptodate
= pc
->error
? 0 : 1;
165 debug_log("Reached %s\n", __func__
);
167 if (floppy
->failed_pc
== pc
)
168 floppy
->failed_pc
= NULL
;
170 if (pc
->c
[0] == GPCMD_READ_10
|| pc
->c
[0] == GPCMD_WRITE_10
||
171 (pc
->rq
&& blk_pc_request(pc
->rq
)))
172 uptodate
= 1; /* FIXME */
173 else if (pc
->c
[0] == GPCMD_REQUEST_SENSE
) {
177 floppy
->sense_key
= buf
[2] & 0x0F;
178 floppy
->asc
= buf
[12];
179 floppy
->ascq
= buf
[13];
180 floppy
->progress_indication
= buf
[15] & 0x80 ?
181 (u16
)get_unaligned((u16
*)&buf
[16]) : 0x10000;
183 if (floppy
->failed_pc
)
184 debug_log("pc = %x, ", floppy
->failed_pc
->c
[0]);
186 debug_log("sense key = %x, asc = %x, ascq = %x\n",
187 floppy
->sense_key
, floppy
->asc
, floppy
->ascq
);
189 printk(KERN_ERR
"Error in REQUEST SENSE itself - "
190 "Aborting request!\n");
193 idefloppy_end_request(drive
, uptodate
, 0);
196 void ide_floppy_create_request_sense_cmd(struct ide_atapi_pc
*pc
)
199 pc
->c
[0] = GPCMD_REQUEST_SENSE
;
205 * Called when an error was detected during the last packet command. We queue a
206 * request sense packet command in the head of the request list.
208 static void idefloppy_retry_pc(ide_drive_t
*drive
)
210 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
211 struct request
*rq
= &floppy
->request_sense_rq
;
212 struct ide_atapi_pc
*pc
= &floppy
->request_sense_pc
;
214 (void)ide_read_error(drive
);
215 ide_floppy_create_request_sense_cmd(pc
);
216 ide_queue_pc_head(drive
, floppy
->disk
, pc
, rq
);
219 /* The usual interrupt handler called during a packet command. */
220 static ide_startstop_t
idefloppy_pc_intr(ide_drive_t
*drive
)
222 return ide_pc_intr(drive
, idefloppy_pc_intr
, idefloppy_update_buffers
,
223 idefloppy_retry_pc
, ide_io_buffers
);
227 * What we have here is a classic case of a top half / bottom half interrupt
228 * service routine. In interrupt mode, the device sends an interrupt to signal
229 * that it is ready to receive a packet. However, we need to delay about 2-3
230 * ticks before issuing the packet or we gets in trouble.
232 static int idefloppy_transfer_pc(ide_drive_t
*drive
)
234 /* Send the actual packet */
235 drive
->hwif
->tp_ops
->output_data(drive
, NULL
, drive
->pc
->c
, 12);
237 /* Timeout for the packet command */
238 return WAIT_FLOPPY_CMD
;
242 * Called as an interrupt (or directly). When the device says it's ready for a
243 * packet, we schedule the packet transfer to occur about 2-3 ticks later in
246 static ide_startstop_t
idefloppy_start_pc_transfer(ide_drive_t
*drive
)
248 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
249 ide_expiry_t
*expiry
;
250 unsigned int timeout
;
253 * The following delay solves a problem with ATAPI Zip 100 drives
254 * where the Busy flag was apparently being deasserted before the
255 * unit was ready to receive data. This was happening on a
256 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
257 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
258 * used until after the packet is moved in about 50 msec.
260 if (drive
->atapi_flags
& IDE_AFLAG_ZIP_DRIVE
) {
261 timeout
= floppy
->ticks
;
262 expiry
= &idefloppy_transfer_pc
;
264 timeout
= WAIT_FLOPPY_CMD
;
268 return ide_transfer_pc(drive
, idefloppy_pc_intr
, timeout
, expiry
);
271 static void ide_floppy_report_error(idefloppy_floppy_t
*floppy
,
272 struct ide_atapi_pc
*pc
)
274 /* supress error messages resulting from Medium not present */
275 if (floppy
->sense_key
== 0x02 &&
276 floppy
->asc
== 0x3a &&
277 floppy
->ascq
== 0x00)
280 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
281 "asc = %2x, ascq = %2x\n",
282 floppy
->drive
->name
, pc
->c
[0], floppy
->sense_key
,
283 floppy
->asc
, floppy
->ascq
);
287 static ide_startstop_t
idefloppy_issue_pc(ide_drive_t
*drive
,
288 struct ide_atapi_pc
*pc
)
290 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
292 if (floppy
->failed_pc
== NULL
&&
293 pc
->c
[0] != GPCMD_REQUEST_SENSE
)
294 floppy
->failed_pc
= pc
;
296 /* Set the current packet command */
299 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
) {
300 if (!(pc
->flags
& PC_FLAG_SUPPRESS_ERROR
))
301 ide_floppy_report_error(floppy
, pc
);
303 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
305 floppy
->failed_pc
= NULL
;
306 drive
->pc_callback(drive
, 0);
310 debug_log("Retry number - %d\n", pc
->retries
);
314 return ide_issue_pc(drive
, idefloppy_start_pc_transfer
,
315 WAIT_FLOPPY_CMD
, NULL
);
318 void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc
*pc
)
321 pc
->c
[0] = GPCMD_READ_FORMAT_CAPACITIES
;
327 /* A mode sense command is used to "sense" floppy parameters. */
328 void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc
*pc
, u8 page_code
)
330 u16 length
= 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
333 pc
->c
[0] = GPCMD_MODE_SENSE_10
;
335 pc
->c
[2] = page_code
;
338 case IDEFLOPPY_CAPABILITIES_PAGE
:
341 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
345 printk(KERN_ERR
"ide-floppy: unsupported page code "
346 "in create_mode_sense_cmd\n");
348 put_unaligned(cpu_to_be16(length
), (u16
*) &pc
->c
[7]);
349 pc
->req_xfer
= length
;
352 static void idefloppy_create_rw_cmd(idefloppy_floppy_t
*floppy
,
353 struct ide_atapi_pc
*pc
, struct request
*rq
,
354 unsigned long sector
)
356 int block
= sector
/ floppy
->bs_factor
;
357 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
358 int cmd
= rq_data_dir(rq
);
360 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
364 pc
->c
[0] = cmd
== READ
? GPCMD_READ_10
: GPCMD_WRITE_10
;
365 put_unaligned(cpu_to_be16(blocks
), (unsigned short *)&pc
->c
[7]);
366 put_unaligned(cpu_to_be32(block
), (unsigned int *) &pc
->c
[2]);
368 memcpy(rq
->cmd
, pc
->c
, 12);
372 if (rq
->cmd_flags
& REQ_RW
)
373 pc
->flags
|= PC_FLAG_WRITING
;
375 pc
->req_xfer
= pc
->buf_size
= blocks
* floppy
->block_size
;
376 pc
->flags
|= PC_FLAG_DMA_OK
;
379 static void idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
,
380 struct ide_atapi_pc
*pc
, struct request
*rq
)
383 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
386 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
387 pc
->flags
|= PC_FLAG_WRITING
;
390 pc
->flags
|= PC_FLAG_DMA_OK
;
392 * possibly problematic, doesn't look like ide-floppy correctly
393 * handled scattered requests if dma fails...
395 pc
->req_xfer
= pc
->buf_size
= rq
->data_len
;
398 static ide_startstop_t
idefloppy_do_request(ide_drive_t
*drive
,
399 struct request
*rq
, sector_t block_s
)
401 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
402 ide_hwif_t
*hwif
= drive
->hwif
;
403 struct ide_atapi_pc
*pc
;
404 unsigned long block
= (unsigned long)block_s
;
406 debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n",
407 __func__
, rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
408 rq
->cmd
[0], rq
->cmd_type
, rq
->errors
);
410 debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",
411 __func__
, (long)rq
->sector
, rq
->nr_sectors
,
412 rq
->current_nr_sectors
);
414 if (rq
->errors
>= ERROR_MAX
) {
415 if (floppy
->failed_pc
)
416 ide_floppy_report_error(floppy
, floppy
->failed_pc
);
418 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
420 idefloppy_end_request(drive
, 0, 0);
423 if (blk_fs_request(rq
)) {
424 if (((long)rq
->sector
% floppy
->bs_factor
) ||
425 (rq
->nr_sectors
% floppy
->bs_factor
)) {
426 printk(KERN_ERR
"%s: unsupported r/w request size\n",
428 idefloppy_end_request(drive
, 0, 0);
431 pc
= &floppy
->queued_pc
;
432 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
433 } else if (blk_special_request(rq
)) {
434 pc
= (struct ide_atapi_pc
*) rq
->buffer
;
435 } else if (blk_pc_request(rq
)) {
436 pc
= &floppy
->queued_pc
;
437 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
439 blk_dump_rq_flags(rq
,
440 "ide-floppy: unsupported command in queue");
441 idefloppy_end_request(drive
, 0, 0);
445 ide_init_sg_cmd(drive
, rq
);
446 ide_map_sg(drive
, rq
);
448 pc
->sg
= hwif
->sg_table
;
449 pc
->sg_cnt
= hwif
->sg_nents
;
453 return idefloppy_issue_pc(drive
, pc
);
457 * Look at the flexible disk page parameters. We ignore the CHS capacity
458 * parameters and use the LBA parameters instead.
460 static int ide_floppy_get_flexible_disk_page(ide_drive_t
*drive
)
462 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
463 struct gendisk
*disk
= floppy
->disk
;
464 struct ide_atapi_pc pc
;
466 int capacity
, lba_capacity
;
467 u16 transfer_rate
, sector_size
, cyls
, rpm
;
470 ide_floppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
);
472 if (ide_queue_pc_tail(drive
, disk
, &pc
)) {
473 printk(KERN_ERR
"ide-floppy: Can't get flexible disk page"
478 if (pc
.buf
[3] & 0x80)
479 drive
->atapi_flags
|= IDE_AFLAG_WP
;
481 drive
->atapi_flags
&= ~IDE_AFLAG_WP
;
483 set_disk_ro(disk
, !!(drive
->atapi_flags
& IDE_AFLAG_WP
));
487 transfer_rate
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 2]);
488 sector_size
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 6]);
489 cyls
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 8]);
490 rpm
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 28]);
491 heads
= pc
.buf
[8 + 4];
492 sectors
= pc
.buf
[8 + 5];
494 capacity
= cyls
* heads
* sectors
* sector_size
;
496 if (memcmp(page
, &floppy
->flexible_disk_page
, 32))
497 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
498 "%d sector size, %d rpm\n",
499 drive
->name
, capacity
/ 1024, cyls
, heads
,
500 sectors
, transfer_rate
/ 8, sector_size
, rpm
);
502 memcpy(&floppy
->flexible_disk_page
, page
, 32);
503 drive
->bios_cyl
= cyls
;
504 drive
->bios_head
= heads
;
505 drive
->bios_sect
= sectors
;
506 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
508 if (capacity
< lba_capacity
) {
509 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
510 "bytes, but the drive only handles %d\n",
511 drive
->name
, lba_capacity
, capacity
);
512 floppy
->blocks
= floppy
->block_size
?
513 capacity
/ floppy
->block_size
: 0;
519 * Determine if a media is present in the floppy drive, and if so, its LBA
522 static int ide_floppy_get_capacity(ide_drive_t
*drive
)
524 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
525 struct gendisk
*disk
= floppy
->disk
;
526 struct ide_atapi_pc pc
;
528 u8 header_len
, desc_cnt
;
529 int i
, rc
= 1, blocks
, length
;
532 drive
->bios_head
= drive
->bios_sect
= 0;
534 floppy
->bs_factor
= 1;
535 set_capacity(floppy
->disk
, 0);
537 ide_floppy_create_read_capacity_cmd(&pc
);
538 if (ide_queue_pc_tail(drive
, disk
, &pc
)) {
539 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
542 header_len
= pc
.buf
[3];
543 cap_desc
= &pc
.buf
[4];
544 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
546 for (i
= 0; i
< desc_cnt
; i
++) {
547 unsigned int desc_start
= 4 + i
*8;
549 blocks
= be32_to_cpup((__be32
*)&pc
.buf
[desc_start
]);
550 length
= be16_to_cpup((__be16
*)&pc
.buf
[desc_start
+ 6]);
552 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
553 i
, blocks
* length
/ 1024, blocks
, length
);
558 * the code below is valid only for the 1st descriptor, ie i=0
561 switch (pc
.buf
[desc_start
+ 4] & 0x03) {
562 /* Clik! drive returns this instead of CAPACITY_CURRENT */
563 case CAPACITY_UNFORMATTED
:
564 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
))
566 * If it is not a clik drive, break out
567 * (maintains previous driver behaviour)
570 case CAPACITY_CURRENT
:
571 /* Normal Zip/LS-120 disks */
572 if (memcmp(cap_desc
, &floppy
->cap_desc
, 8))
573 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
574 "sector size\n", drive
->name
,
575 blocks
* length
/ 1024, blocks
, length
);
576 memcpy(&floppy
->cap_desc
, cap_desc
, 8);
578 if (!length
|| length
% 512) {
579 printk(KERN_NOTICE
"%s: %d bytes block size "
580 "not supported\n", drive
->name
, length
);
582 floppy
->blocks
= blocks
;
583 floppy
->block_size
= length
;
584 floppy
->bs_factor
= length
/ 512;
585 if (floppy
->bs_factor
!= 1)
586 printk(KERN_NOTICE
"%s: warning: non "
587 "512 bytes block size not "
593 case CAPACITY_NO_CARTRIDGE
:
595 * This is a KERN_ERR so it appears on screen
596 * for the user to see
598 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
600 case CAPACITY_INVALID
:
601 printk(KERN_ERR
"%s: Invalid capacity for disk "
602 "in drive\n", drive
->name
);
605 debug_log("Descriptor 0 Code: %d\n",
606 pc
.buf
[desc_start
+ 4] & 0x03);
609 /* Clik! disk does not support get_flexible_disk_page */
610 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
))
611 (void) ide_floppy_get_flexible_disk_page(drive
);
613 set_capacity(disk
, floppy
->blocks
* floppy
->bs_factor
);
618 static sector_t
idefloppy_capacity(ide_drive_t
*drive
)
620 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
621 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
626 #ifdef CONFIG_IDE_PROC_FS
627 ide_devset_rw_field(bios_cyl
, bios_cyl
);
628 ide_devset_rw_field(bios_head
, bios_head
);
629 ide_devset_rw_field(bios_sect
, bios_sect
);
631 static int get_ticks(ide_drive_t
*drive
)
633 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
634 return floppy
->ticks
;
637 static int set_ticks(ide_drive_t
*drive
, int arg
)
639 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
644 IDE_DEVSET(ticks
, DS_SYNC
, get_ticks
, set_ticks
);
646 static const struct ide_proc_devset idefloppy_settings
[] = {
647 IDE_PROC_DEVSET(bios_cyl
, 0, 1023),
648 IDE_PROC_DEVSET(bios_head
, 0, 255),
649 IDE_PROC_DEVSET(bios_sect
, 0, 63),
650 IDE_PROC_DEVSET(ticks
, 0, 255),
655 static void idefloppy_setup(ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
660 *((u16
*)&gcw
) = id
[ATA_ID_CONFIG
];
662 drive
->pc_callback
= ide_floppy_callback
;
664 if (((gcw
[0] & 0x60) >> 5) == 1)
665 drive
->atapi_flags
|= IDE_AFLAG_DRQ_INTERRUPT
;
667 * We used to check revisions here. At this point however I'm giving up.
668 * Just assume they are all broken, its easier.
670 * The actual reason for the workarounds was likely a driver bug after
671 * all rather than a firmware bug, and the workaround below used to hide
672 * it. It should be fixed as of version 1.9, but to be on the safe side
673 * we'll leave the limitation below for the 2.2.x tree.
675 if (!strncmp((char *)&id
[ATA_ID_PROD
], "IOMEGA ZIP 100 ATAPI", 20)) {
676 drive
->atapi_flags
|= IDE_AFLAG_ZIP_DRIVE
;
677 /* This value will be visible in the /proc/ide/hdx/settings */
678 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
679 blk_queue_max_sectors(drive
->queue
, 64);
683 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
684 * nasty clicking noises without it, so please don't remove this.
686 if (strncmp((char *)&id
[ATA_ID_PROD
], "IOMEGA Clik!", 11) == 0) {
687 blk_queue_max_sectors(drive
->queue
, 64);
688 drive
->atapi_flags
|= IDE_AFLAG_CLIK_DRIVE
;
689 /* IOMEGA Clik! drives do not support lock/unlock commands */
690 drive
->atapi_flags
|= IDE_AFLAG_NO_DOORLOCK
;
693 (void) ide_floppy_get_capacity(drive
);
695 ide_proc_register_driver(drive
, floppy
->driver
);
698 static void ide_floppy_remove(ide_drive_t
*drive
)
700 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
701 struct gendisk
*g
= floppy
->disk
;
703 ide_proc_unregister_driver(drive
, floppy
->driver
);
707 ide_floppy_put(floppy
);
710 static void idefloppy_cleanup_obj(struct kref
*kref
)
712 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
713 ide_drive_t
*drive
= floppy
->drive
;
714 struct gendisk
*g
= floppy
->disk
;
716 drive
->driver_data
= NULL
;
717 g
->private_data
= NULL
;
722 #ifdef CONFIG_IDE_PROC_FS
723 static int proc_idefloppy_read_capacity(char *page
, char **start
, off_t off
,
724 int count
, int *eof
, void *data
)
726 ide_drive_t
*drive
= (ide_drive_t
*)data
;
729 len
= sprintf(page
, "%llu\n", (long long)idefloppy_capacity(drive
));
730 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
733 static ide_proc_entry_t idefloppy_proc
[] = {
734 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
735 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
736 { NULL
, 0, NULL
, NULL
}
738 #endif /* CONFIG_IDE_PROC_FS */
740 static int ide_floppy_probe(ide_drive_t
*);
742 static ide_driver_t idefloppy_driver
= {
744 .owner
= THIS_MODULE
,
745 .name
= "ide-floppy",
746 .bus
= &ide_bus_type
,
748 .probe
= ide_floppy_probe
,
749 .remove
= ide_floppy_remove
,
750 .version
= IDEFLOPPY_VERSION
,
752 .do_request
= idefloppy_do_request
,
753 .end_request
= idefloppy_end_request
,
754 .error
= __ide_error
,
755 #ifdef CONFIG_IDE_PROC_FS
756 .proc
= idefloppy_proc
,
757 .settings
= idefloppy_settings
,
761 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
763 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
764 struct ide_floppy_obj
*floppy
;
768 debug_log("Reached %s\n", __func__
);
770 floppy
= ide_floppy_get(disk
);
774 drive
= floppy
->drive
;
778 if (floppy
->openers
== 1) {
779 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
782 if (ide_do_test_unit_ready(drive
, disk
))
783 ide_do_start_stop(drive
, disk
, 1);
785 if (ide_floppy_get_capacity(drive
)
786 && (filp
->f_flags
& O_NDELAY
) == 0
788 * Allow O_NDELAY to open a drive without a disk, or with an
789 * unreadable disk, so that we can get the format capacity
790 * of the drive or begin the format - Sam
797 if ((drive
->atapi_flags
& IDE_AFLAG_WP
) && (filp
->f_mode
& 2)) {
802 drive
->atapi_flags
|= IDE_AFLAG_MEDIA_CHANGED
;
803 ide_set_media_lock(drive
, disk
, 1);
804 check_disk_change(inode
->i_bdev
);
805 } else if (drive
->atapi_flags
& IDE_AFLAG_FORMAT_IN_PROGRESS
) {
813 ide_floppy_put(floppy
);
817 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
819 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
820 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
821 ide_drive_t
*drive
= floppy
->drive
;
823 debug_log("Reached %s\n", __func__
);
825 if (floppy
->openers
== 1) {
826 ide_set_media_lock(drive
, disk
, 0);
827 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
832 ide_floppy_put(floppy
);
837 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
839 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
840 ide_drive_t
*drive
= floppy
->drive
;
842 geo
->heads
= drive
->bios_head
;
843 geo
->sectors
= drive
->bios_sect
;
844 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
848 static int ide_floppy_lockdoor(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
849 unsigned long arg
, unsigned int cmd
)
851 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
852 struct gendisk
*disk
= floppy
->disk
;
853 int prevent
= (arg
&& cmd
!= CDROMEJECT
) ? 1 : 0;
855 if (floppy
->openers
> 1)
858 ide_set_media_lock(drive
, disk
, prevent
);
860 if (cmd
== CDROMEJECT
)
861 ide_do_start_stop(drive
, disk
, 2);
866 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
867 unsigned int cmd
, unsigned long arg
)
869 struct block_device
*bdev
= inode
->i_bdev
;
870 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
871 ide_drive_t
*drive
= floppy
->drive
;
872 struct ide_atapi_pc pc
;
873 void __user
*argp
= (void __user
*)arg
;
876 if (cmd
== CDROMEJECT
|| cmd
== CDROM_LOCKDOOR
)
877 return ide_floppy_lockdoor(drive
, &pc
, arg
, cmd
);
879 err
= ide_floppy_format_ioctl(drive
, file
, cmd
, argp
);
884 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
885 * and CDROM_SEND_PACKET (legacy) ioctls
887 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
888 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
889 bdev
->bd_disk
, cmd
, argp
);
892 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
897 static int idefloppy_media_changed(struct gendisk
*disk
)
899 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
900 ide_drive_t
*drive
= floppy
->drive
;
903 /* do not scan partitions twice if this is a removable device */
908 ret
= !!(drive
->atapi_flags
& IDE_AFLAG_MEDIA_CHANGED
);
909 drive
->atapi_flags
&= ~IDE_AFLAG_MEDIA_CHANGED
;
913 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
915 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
916 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
920 static struct block_device_operations idefloppy_ops
= {
921 .owner
= THIS_MODULE
,
922 .open
= idefloppy_open
,
923 .release
= idefloppy_release
,
924 .ioctl
= idefloppy_ioctl
,
925 .getgeo
= idefloppy_getgeo
,
926 .media_changed
= idefloppy_media_changed
,
927 .revalidate_disk
= idefloppy_revalidate_disk
930 static int ide_floppy_probe(ide_drive_t
*drive
)
932 idefloppy_floppy_t
*floppy
;
935 if (!strstr("ide-floppy", drive
->driver_req
))
938 if (drive
->media
!= ide_floppy
)
941 if (!ide_check_atapi_device(drive
, DRV_NAME
)) {
942 printk(KERN_ERR
"ide-floppy: %s: not supported by this version"
943 " of ide-floppy\n", drive
->name
);
946 floppy
= kzalloc(sizeof(idefloppy_floppy_t
), GFP_KERNEL
);
948 printk(KERN_ERR
"ide-floppy: %s: Can't allocate a floppy"
949 " structure\n", drive
->name
);
953 g
= alloc_disk(1 << PARTN_BITS
);
955 goto out_free_floppy
;
957 ide_init_disk(g
, drive
);
959 kref_init(&floppy
->kref
);
961 floppy
->drive
= drive
;
962 floppy
->driver
= &idefloppy_driver
;
965 g
->private_data
= &floppy
->driver
;
967 drive
->driver_data
= floppy
;
969 idefloppy_setup(drive
, floppy
);
971 g
->minors
= 1 << PARTN_BITS
;
972 g
->driverfs_dev
= &drive
->gendev
;
973 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
974 g
->fops
= &idefloppy_ops
;
985 static void __exit
idefloppy_exit(void)
987 driver_unregister(&idefloppy_driver
.gen_driver
);
990 static int __init
idefloppy_init(void)
992 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
993 return driver_register(&idefloppy_driver
.gen_driver
);
996 MODULE_ALIAS("ide:*m-floppy*");
997 MODULE_ALIAS("ide-floppy");
998 module_init(idefloppy_init
);
999 module_exit(idefloppy_exit
);
1000 MODULE_LICENSE("GPL");
1001 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");