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 IDEFLOPPY_VERSION "1.00"
20 #include <linux/module.h>
21 #include <linux/types.h>
22 #include <linux/string.h>
23 #include <linux/kernel.h>
24 #include <linux/delay.h>
25 #include <linux/timer.h>
27 #include <linux/interrupt.h>
28 #include <linux/major.h>
29 #include <linux/errno.h>
30 #include <linux/genhd.h>
31 #include <linux/slab.h>
32 #include <linux/cdrom.h>
33 #include <linux/ide.h>
34 #include <linux/bitops.h>
35 #include <linux/mutex.h>
37 #include <scsi/scsi_ioctl.h>
39 #include <asm/byteorder.h>
40 #include <linux/irq.h>
41 #include <linux/uaccess.h>
43 #include <asm/unaligned.h>
45 /* define to see debug info */
46 #define IDEFLOPPY_DEBUG_LOG 0
48 /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
49 #define IDEFLOPPY_DEBUG(fmt, args...)
51 #if IDEFLOPPY_DEBUG_LOG
52 #define debug_log(fmt, args...) \
53 printk(KERN_INFO "ide-floppy: " fmt, ## args)
55 #define debug_log(fmt, args...) do {} while (0)
59 /* Some drives require a longer irq timeout. */
60 #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
63 * After each failed packet command we issue a request sense command and retry
64 * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
66 #define IDEFLOPPY_MAX_PC_RETRIES 3
69 * With each packet command, we allocate a buffer of IDEFLOPPY_PC_BUFFER_SIZE
72 #define IDEFLOPPY_PC_BUFFER_SIZE 256
75 * In various places in the driver, we need to allocate storage for packet
76 * commands and requests, which will remain valid while we leave the driver to
77 * wait for an interrupt or a timeout event.
79 #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
81 /* format capacities descriptor codes */
82 #define CAPACITY_INVALID 0x00
83 #define CAPACITY_UNFORMATTED 0x01
84 #define CAPACITY_CURRENT 0x02
85 #define CAPACITY_NO_CARTRIDGE 0x03
88 * Most of our global data which we need to save even as we leave the driver
89 * due to an interrupt or a timer event is stored in a variable of type
90 * idefloppy_floppy_t, defined below.
92 typedef struct ide_floppy_obj
{
97 unsigned int openers
; /* protected by BKL for now */
99 /* Current packet command */
100 struct ide_atapi_pc
*pc
;
101 /* Last failed packet command */
102 struct ide_atapi_pc
*failed_pc
;
103 /* Packet command stack */
104 struct ide_atapi_pc pc_stack
[IDEFLOPPY_PC_STACK
];
105 /* Next free packet command storage space */
107 struct request rq_stack
[IDEFLOPPY_PC_STACK
];
108 /* We implement a circular array */
111 /* Last error information */
112 u8 sense_key
, asc
, ascq
;
113 /* delay this long before sending packet command */
115 int progress_indication
;
117 /* Device information */
119 int blocks
, block_size
, bs_factor
;
120 /* Last format capacity descriptor */
122 /* Copy of the flexible disk page */
123 u8 flexible_disk_page
[32];
126 /* Supports format progress report */
128 } idefloppy_floppy_t
;
130 #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
132 /* Defines for the MODE SENSE command */
133 #define MODE_SENSE_CURRENT 0x00
134 #define MODE_SENSE_CHANGEABLE 0x01
135 #define MODE_SENSE_DEFAULT 0x02
136 #define MODE_SENSE_SAVED 0x03
138 /* IOCTLs used in low-level formatting. */
139 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
140 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
141 #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
142 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
144 /* Error code returned in rq->errors to the higher part of the driver. */
145 #define IDEFLOPPY_ERROR_GENERAL 101
148 * Pages of the SELECT SENSE / MODE SENSE packet commands.
149 * See SFF-8070i spec.
151 #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
152 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
154 static DEFINE_MUTEX(idefloppy_ref_mutex
);
156 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
158 #define ide_floppy_g(disk) \
159 container_of((disk)->private_data, struct ide_floppy_obj, driver)
161 static struct ide_floppy_obj
*ide_floppy_get(struct gendisk
*disk
)
163 struct ide_floppy_obj
*floppy
= NULL
;
165 mutex_lock(&idefloppy_ref_mutex
);
166 floppy
= ide_floppy_g(disk
);
168 kref_get(&floppy
->kref
);
169 mutex_unlock(&idefloppy_ref_mutex
);
173 static void idefloppy_cleanup_obj(struct kref
*);
175 static void ide_floppy_put(struct ide_floppy_obj
*floppy
)
177 mutex_lock(&idefloppy_ref_mutex
);
178 kref_put(&floppy
->kref
, idefloppy_cleanup_obj
);
179 mutex_unlock(&idefloppy_ref_mutex
);
183 * Used to finish servicing a request. For read/write requests, we will call
184 * ide_end_request to pass to the next buffer.
186 static int idefloppy_end_request(ide_drive_t
*drive
, int uptodate
, int nsecs
)
188 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
189 struct request
*rq
= HWGROUP(drive
)->rq
;
192 debug_log("Reached %s\n", __func__
);
195 case 0: error
= IDEFLOPPY_ERROR_GENERAL
; break;
196 case 1: error
= 0; break;
197 default: error
= uptodate
;
200 floppy
->failed_pc
= NULL
;
201 /* Why does this happen? */
204 if (!blk_special_request(rq
)) {
205 /* our real local end request function */
206 ide_end_request(drive
, uptodate
, nsecs
);
210 /* fixme: need to move this local also */
211 ide_end_drive_cmd(drive
, 0, 0);
215 static void ide_floppy_io_buffers(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
216 unsigned int bcount
, int direction
)
218 ide_hwif_t
*hwif
= drive
->hwif
;
219 struct request
*rq
= pc
->rq
;
220 struct req_iterator iter
;
221 struct bio_vec
*bvec
;
226 rq_for_each_segment(bvec
, rq
, iter
) {
230 count
= min(bvec
->bv_len
, bcount
);
232 data
= bvec_kmap_irq(bvec
, &flags
);
234 hwif
->tp_ops
->output_data(drive
, NULL
, data
, count
);
236 hwif
->tp_ops
->input_data(drive
, NULL
, data
, count
);
237 bvec_kunmap_irq(data
, &flags
);
240 pc
->b_count
+= count
;
244 idefloppy_end_request(drive
, 1, done
>> 9);
247 printk(KERN_ERR
"%s: leftover data in %s, bcount == %d\n",
248 drive
->name
, __func__
, bcount
);
249 ide_pad_transfer(drive
, direction
, bcount
);
253 static void idefloppy_update_buffers(ide_drive_t
*drive
,
254 struct ide_atapi_pc
*pc
)
256 struct request
*rq
= pc
->rq
;
257 struct bio
*bio
= rq
->bio
;
259 while ((bio
= rq
->bio
) != NULL
)
260 idefloppy_end_request(drive
, 1, 0);
264 * Generate a new packet command request in front of the request queue, before
265 * the current request so that it will be processed immediately, on the next
266 * pass through the driver.
268 static void idefloppy_queue_pc_head(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
271 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
273 blk_rq_init(NULL
, rq
);
274 rq
->buffer
= (char *) pc
;
275 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
276 rq
->cmd_flags
|= REQ_PREEMPT
;
277 rq
->rq_disk
= floppy
->disk
;
278 memcpy(rq
->cmd
, pc
->c
, 12);
279 ide_do_drive_cmd(drive
, rq
);
282 static struct ide_atapi_pc
*idefloppy_next_pc_storage(ide_drive_t
*drive
)
284 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
286 if (floppy
->pc_stack_index
== IDEFLOPPY_PC_STACK
)
287 floppy
->pc_stack_index
= 0;
288 return (&floppy
->pc_stack
[floppy
->pc_stack_index
++]);
291 static struct request
*idefloppy_next_rq_storage(ide_drive_t
*drive
)
293 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
295 if (floppy
->rq_stack_index
== IDEFLOPPY_PC_STACK
)
296 floppy
->rq_stack_index
= 0;
297 return (&floppy
->rq_stack
[floppy
->rq_stack_index
++]);
300 static void ide_floppy_callback(ide_drive_t
*drive
)
302 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
303 struct ide_atapi_pc
*pc
= floppy
->pc
;
304 int uptodate
= pc
->error
? 0 : 1;
306 debug_log("Reached %s\n", __func__
);
308 if (floppy
->failed_pc
== pc
)
309 floppy
->failed_pc
= NULL
;
311 if (pc
->c
[0] == GPCMD_READ_10
|| pc
->c
[0] == GPCMD_WRITE_10
||
312 (pc
->rq
&& blk_pc_request(pc
->rq
)))
313 uptodate
= 1; /* FIXME */
314 else if (pc
->c
[0] == GPCMD_REQUEST_SENSE
) {
315 u8
*buf
= floppy
->pc
->buf
;
318 floppy
->sense_key
= buf
[2] & 0x0F;
319 floppy
->asc
= buf
[12];
320 floppy
->ascq
= buf
[13];
321 floppy
->progress_indication
= buf
[15] & 0x80 ?
322 (u16
)get_unaligned((u16
*)&buf
[16]) : 0x10000;
324 if (floppy
->failed_pc
)
325 debug_log("pc = %x, ", floppy
->failed_pc
->c
[0]);
327 debug_log("sense key = %x, asc = %x, ascq = %x\n",
328 floppy
->sense_key
, floppy
->asc
, floppy
->ascq
);
330 printk(KERN_ERR
"Error in REQUEST SENSE itself - "
331 "Aborting request!\n");
334 idefloppy_end_request(drive
, uptodate
, 0);
337 static void idefloppy_init_pc(struct ide_atapi_pc
*pc
)
339 memset(pc
, 0, sizeof(*pc
));
340 pc
->buf
= pc
->pc_buf
;
341 pc
->buf_size
= IDEFLOPPY_PC_BUFFER_SIZE
;
344 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc
*pc
)
346 idefloppy_init_pc(pc
);
347 pc
->c
[0] = GPCMD_REQUEST_SENSE
;
353 * Called when an error was detected during the last packet command. We queue a
354 * request sense packet command in the head of the request list.
356 static void idefloppy_retry_pc(ide_drive_t
*drive
)
358 struct ide_atapi_pc
*pc
;
361 (void)ide_read_error(drive
);
362 pc
= idefloppy_next_pc_storage(drive
);
363 rq
= idefloppy_next_rq_storage(drive
);
364 idefloppy_create_request_sense_cmd(pc
);
365 idefloppy_queue_pc_head(drive
, pc
, rq
);
368 /* The usual interrupt handler called during a packet command. */
369 static ide_startstop_t
idefloppy_pc_intr(ide_drive_t
*drive
)
371 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
373 return ide_pc_intr(drive
, floppy
->pc
, idefloppy_pc_intr
,
374 IDEFLOPPY_WAIT_CMD
, NULL
, idefloppy_update_buffers
,
375 idefloppy_retry_pc
, NULL
, ide_floppy_io_buffers
);
379 * What we have here is a classic case of a top half / bottom half interrupt
380 * service routine. In interrupt mode, the device sends an interrupt to signal
381 * that it is ready to receive a packet. However, we need to delay about 2-3
382 * ticks before issuing the packet or we gets in trouble.
384 static int idefloppy_transfer_pc(ide_drive_t
*drive
)
386 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
388 /* Send the actual packet */
389 drive
->hwif
->tp_ops
->output_data(drive
, NULL
, floppy
->pc
->c
, 12);
391 /* Timeout for the packet command */
392 return IDEFLOPPY_WAIT_CMD
;
397 * Called as an interrupt (or directly). When the device says it's ready for a
398 * packet, we schedule the packet transfer to occur about 2-3 ticks later in
401 static ide_startstop_t
idefloppy_start_pc_transfer(ide_drive_t
*drive
)
403 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
404 struct ide_atapi_pc
*pc
= floppy
->pc
;
405 ide_expiry_t
*expiry
;
406 unsigned int timeout
;
409 * The following delay solves a problem with ATAPI Zip 100 drives
410 * where the Busy flag was apparently being deasserted before the
411 * unit was ready to receive data. This was happening on a
412 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
413 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
414 * used until after the packet is moved in about 50 msec.
416 if (drive
->atapi_flags
& IDE_AFLAG_ZIP_DRIVE
) {
417 timeout
= floppy
->ticks
;
418 expiry
= &idefloppy_transfer_pc
;
420 timeout
= IDEFLOPPY_WAIT_CMD
;
424 return ide_transfer_pc(drive
, pc
, idefloppy_pc_intr
, timeout
, expiry
);
427 static void ide_floppy_report_error(idefloppy_floppy_t
*floppy
,
428 struct ide_atapi_pc
*pc
)
430 /* supress error messages resulting from Medium not present */
431 if (floppy
->sense_key
== 0x02 &&
432 floppy
->asc
== 0x3a &&
433 floppy
->ascq
== 0x00)
436 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
437 "asc = %2x, ascq = %2x\n",
438 floppy
->drive
->name
, pc
->c
[0], floppy
->sense_key
,
439 floppy
->asc
, floppy
->ascq
);
443 static ide_startstop_t
idefloppy_issue_pc(ide_drive_t
*drive
,
444 struct ide_atapi_pc
*pc
)
446 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
448 if (floppy
->failed_pc
== NULL
&&
449 pc
->c
[0] != GPCMD_REQUEST_SENSE
)
450 floppy
->failed_pc
= pc
;
451 /* Set the current packet command */
454 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
) {
455 if (!(pc
->flags
& PC_FLAG_SUPPRESS_ERROR
))
456 ide_floppy_report_error(floppy
, pc
);
458 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
460 floppy
->failed_pc
= NULL
;
461 drive
->pc_callback(drive
);
465 debug_log("Retry number - %d\n", pc
->retries
);
469 return ide_issue_pc(drive
, pc
, idefloppy_start_pc_transfer
,
470 IDEFLOPPY_WAIT_CMD
, NULL
);
473 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc
*pc
, int prevent
)
475 debug_log("creating prevent removal command, prevent = %d\n", prevent
);
477 idefloppy_init_pc(pc
);
478 pc
->c
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
482 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc
*pc
)
484 idefloppy_init_pc(pc
);
485 pc
->c
[0] = GPCMD_READ_FORMAT_CAPACITIES
;
491 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc
*pc
, int b
,
494 idefloppy_init_pc(pc
);
495 pc
->c
[0] = GPCMD_FORMAT_UNIT
;
498 memset(pc
->buf
, 0, 12);
500 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
502 if (flags
& 1) /* Verify bit on... */
503 pc
->buf
[1] ^= 0x20; /* ... turn off DCRT bit */
506 put_unaligned(cpu_to_be32(b
), (unsigned int *)(&pc
->buf
[4]));
507 put_unaligned(cpu_to_be32(l
), (unsigned int *)(&pc
->buf
[8]));
509 pc
->flags
|= PC_FLAG_WRITING
;
512 /* A mode sense command is used to "sense" floppy parameters. */
513 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc
*pc
,
514 u8 page_code
, u8 type
)
516 u16 length
= 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
518 idefloppy_init_pc(pc
);
519 pc
->c
[0] = GPCMD_MODE_SENSE_10
;
521 pc
->c
[2] = page_code
+ (type
<< 6);
524 case IDEFLOPPY_CAPABILITIES_PAGE
:
527 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
531 printk(KERN_ERR
"ide-floppy: unsupported page code "
532 "in create_mode_sense_cmd\n");
534 put_unaligned(cpu_to_be16(length
), (u16
*) &pc
->c
[7]);
535 pc
->req_xfer
= length
;
538 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc
*pc
, int start
)
540 idefloppy_init_pc(pc
);
541 pc
->c
[0] = GPCMD_START_STOP_UNIT
;
545 static void idefloppy_create_rw_cmd(idefloppy_floppy_t
*floppy
,
546 struct ide_atapi_pc
*pc
, struct request
*rq
,
547 unsigned long sector
)
549 int block
= sector
/ floppy
->bs_factor
;
550 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
551 int cmd
= rq_data_dir(rq
);
553 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
556 idefloppy_init_pc(pc
);
557 pc
->c
[0] = cmd
== READ
? GPCMD_READ_10
: GPCMD_WRITE_10
;
558 put_unaligned(cpu_to_be16(blocks
), (unsigned short *)&pc
->c
[7]);
559 put_unaligned(cpu_to_be32(block
), (unsigned int *) &pc
->c
[2]);
561 memcpy(rq
->cmd
, pc
->c
, 12);
564 pc
->b_count
= cmd
== READ
? 0 : rq
->bio
->bi_size
;
565 if (rq
->cmd_flags
& REQ_RW
)
566 pc
->flags
|= PC_FLAG_WRITING
;
568 pc
->req_xfer
= pc
->buf_size
= blocks
* floppy
->block_size
;
569 pc
->flags
|= PC_FLAG_DMA_OK
;
572 static void idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
,
573 struct ide_atapi_pc
*pc
, struct request
*rq
)
575 idefloppy_init_pc(pc
);
576 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
578 pc
->b_count
= rq
->data_len
;
579 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
580 pc
->flags
|= PC_FLAG_WRITING
;
583 pc
->flags
|= PC_FLAG_DMA_OK
;
585 * possibly problematic, doesn't look like ide-floppy correctly
586 * handled scattered requests if dma fails...
588 pc
->req_xfer
= pc
->buf_size
= rq
->data_len
;
591 static ide_startstop_t
idefloppy_do_request(ide_drive_t
*drive
,
592 struct request
*rq
, sector_t block_s
)
594 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
595 struct ide_atapi_pc
*pc
;
596 unsigned long block
= (unsigned long)block_s
;
598 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
599 rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
600 rq
->cmd_type
, rq
->errors
);
601 debug_log("sector: %ld, nr_sectors: %ld, "
602 "current_nr_sectors: %d\n", (long)rq
->sector
,
603 rq
->nr_sectors
, rq
->current_nr_sectors
);
605 if (rq
->errors
>= ERROR_MAX
) {
606 if (floppy
->failed_pc
)
607 ide_floppy_report_error(floppy
, floppy
->failed_pc
);
609 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
611 idefloppy_end_request(drive
, 0, 0);
614 if (blk_fs_request(rq
)) {
615 if (((long)rq
->sector
% floppy
->bs_factor
) ||
616 (rq
->nr_sectors
% floppy
->bs_factor
)) {
617 printk(KERN_ERR
"%s: unsupported r/w request size\n",
619 idefloppy_end_request(drive
, 0, 0);
622 pc
= idefloppy_next_pc_storage(drive
);
623 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
624 } else if (blk_special_request(rq
)) {
625 pc
= (struct ide_atapi_pc
*) rq
->buffer
;
626 } else if (blk_pc_request(rq
)) {
627 pc
= idefloppy_next_pc_storage(drive
);
628 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
630 blk_dump_rq_flags(rq
,
631 "ide-floppy: unsupported command in queue");
632 idefloppy_end_request(drive
, 0, 0);
638 return idefloppy_issue_pc(drive
, pc
);
642 * Add a special packet command request to the tail of the request queue,
643 * and wait for it to be serviced.
645 static int idefloppy_queue_pc_tail(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
)
647 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
651 rq
= blk_get_request(drive
->queue
, READ
, __GFP_WAIT
);
652 rq
->buffer
= (char *) pc
;
653 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
654 memcpy(rq
->cmd
, pc
->c
, 12);
655 error
= blk_execute_rq(drive
->queue
, floppy
->disk
, rq
, 0);
662 * Look at the flexible disk page parameters. We ignore the CHS capacity
663 * parameters and use the LBA parameters instead.
665 static int ide_floppy_get_flexible_disk_page(ide_drive_t
*drive
)
667 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
668 struct ide_atapi_pc pc
;
670 int capacity
, lba_capacity
;
671 u16 transfer_rate
, sector_size
, cyls
, rpm
;
674 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
,
677 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
678 printk(KERN_ERR
"ide-floppy: Can't get flexible disk page"
682 floppy
->wp
= !!(pc
.buf
[3] & 0x80);
683 set_disk_ro(floppy
->disk
, floppy
->wp
);
686 transfer_rate
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 2]);
687 sector_size
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 6]);
688 cyls
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 8]);
689 rpm
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 28]);
690 heads
= pc
.buf
[8 + 4];
691 sectors
= pc
.buf
[8 + 5];
693 capacity
= cyls
* heads
* sectors
* sector_size
;
695 if (memcmp(page
, &floppy
->flexible_disk_page
, 32))
696 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
697 "%d sector size, %d rpm\n",
698 drive
->name
, capacity
/ 1024, cyls
, heads
,
699 sectors
, transfer_rate
/ 8, sector_size
, rpm
);
701 memcpy(&floppy
->flexible_disk_page
, page
, 32);
702 drive
->bios_cyl
= cyls
;
703 drive
->bios_head
= heads
;
704 drive
->bios_sect
= sectors
;
705 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
707 if (capacity
< lba_capacity
) {
708 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
709 "bytes, but the drive only handles %d\n",
710 drive
->name
, lba_capacity
, capacity
);
711 floppy
->blocks
= floppy
->block_size
?
712 capacity
/ floppy
->block_size
: 0;
717 static int idefloppy_get_sfrp_bit(ide_drive_t
*drive
)
719 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
720 struct ide_atapi_pc pc
;
723 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_CAPABILITIES_PAGE
,
726 pc
.flags
|= PC_FLAG_SUPPRESS_ERROR
;
727 if (idefloppy_queue_pc_tail(drive
, &pc
))
730 floppy
->srfp
= pc
.buf
[8 + 2] & 0x40;
735 * Determine if a media is present in the floppy drive, and if so, its LBA
738 static int ide_floppy_get_capacity(ide_drive_t
*drive
)
740 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
741 struct ide_atapi_pc pc
;
743 u8 header_len
, desc_cnt
;
744 int i
, rc
= 1, blocks
, length
;
747 drive
->bios_head
= drive
->bios_sect
= 0;
749 floppy
->bs_factor
= 1;
750 set_capacity(floppy
->disk
, 0);
752 idefloppy_create_read_capacity_cmd(&pc
);
753 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
754 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
757 header_len
= pc
.buf
[3];
758 cap_desc
= &pc
.buf
[4];
759 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
761 for (i
= 0; i
< desc_cnt
; i
++) {
762 unsigned int desc_start
= 4 + i
*8;
764 blocks
= be32_to_cpup((__be32
*)&pc
.buf
[desc_start
]);
765 length
= be16_to_cpup((__be16
*)&pc
.buf
[desc_start
+ 6]);
767 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
768 i
, blocks
* length
/ 1024, blocks
, length
);
773 * the code below is valid only for the 1st descriptor, ie i=0
776 switch (pc
.buf
[desc_start
+ 4] & 0x03) {
777 /* Clik! drive returns this instead of CAPACITY_CURRENT */
778 case CAPACITY_UNFORMATTED
:
779 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
))
781 * If it is not a clik drive, break out
782 * (maintains previous driver behaviour)
785 case CAPACITY_CURRENT
:
786 /* Normal Zip/LS-120 disks */
787 if (memcmp(cap_desc
, &floppy
->cap_desc
, 8))
788 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
789 "sector size\n", drive
->name
,
790 blocks
* length
/ 1024, blocks
, length
);
791 memcpy(&floppy
->cap_desc
, cap_desc
, 8);
793 if (!length
|| length
% 512) {
794 printk(KERN_NOTICE
"%s: %d bytes block size "
795 "not supported\n", drive
->name
, length
);
797 floppy
->blocks
= blocks
;
798 floppy
->block_size
= length
;
799 floppy
->bs_factor
= length
/ 512;
800 if (floppy
->bs_factor
!= 1)
801 printk(KERN_NOTICE
"%s: warning: non "
802 "512 bytes block size not "
808 case CAPACITY_NO_CARTRIDGE
:
810 * This is a KERN_ERR so it appears on screen
811 * for the user to see
813 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
815 case CAPACITY_INVALID
:
816 printk(KERN_ERR
"%s: Invalid capacity for disk "
817 "in drive\n", drive
->name
);
820 debug_log("Descriptor 0 Code: %d\n",
821 pc
.buf
[desc_start
+ 4] & 0x03);
824 /* Clik! disk does not support get_flexible_disk_page */
825 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
))
826 (void) ide_floppy_get_flexible_disk_page(drive
);
828 set_capacity(floppy
->disk
, floppy
->blocks
* floppy
->bs_factor
);
833 * Obtain the list of formattable capacities.
834 * Very similar to ide_floppy_get_capacity, except that we push the capacity
835 * descriptors to userland, instead of our own structures.
837 * Userland gives us the following structure:
839 * struct idefloppy_format_capacities {
847 * userland initializes nformats to the number of allocated formats[] records.
848 * On exit we set nformats to the number of records we've actually initialized.
851 static int ide_floppy_get_format_capacities(ide_drive_t
*drive
, int __user
*arg
)
853 struct ide_atapi_pc pc
;
854 u8 header_len
, desc_cnt
;
855 int i
, blocks
, length
, u_array_size
, u_index
;
858 if (get_user(u_array_size
, arg
))
861 if (u_array_size
<= 0)
864 idefloppy_create_read_capacity_cmd(&pc
);
865 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
866 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
869 header_len
= pc
.buf
[3];
870 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
876 * We always skip the first capacity descriptor. That's the current
877 * capacity. We are interested in the remaining descriptors, the
878 * formattable capacities.
880 for (i
= 1; i
< desc_cnt
; i
++) {
881 unsigned int desc_start
= 4 + i
*8;
883 if (u_index
>= u_array_size
)
884 break; /* User-supplied buffer too small */
886 blocks
= be32_to_cpup((__be32
*)&pc
.buf
[desc_start
]);
887 length
= be16_to_cpup((__be16
*)&pc
.buf
[desc_start
+ 6]);
889 if (put_user(blocks
, argp
))
893 if (put_user(length
, argp
))
900 if (put_user(u_index
, arg
))
906 * Get ATAPI_FORMAT_UNIT progress indication.
908 * Userland gives a pointer to an int. The int is set to a progress
909 * indicator 0-65536, with 65536=100%.
911 * If the drive does not support format progress indication, we just check
912 * the dsc bit, and return either 0 or 65536.
915 static int idefloppy_get_format_progress(ide_drive_t
*drive
, int __user
*arg
)
917 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
918 struct ide_atapi_pc pc
;
919 int progress_indication
= 0x10000;
922 idefloppy_create_request_sense_cmd(&pc
);
923 if (idefloppy_queue_pc_tail(drive
, &pc
))
926 if (floppy
->sense_key
== 2 &&
929 progress_indication
= floppy
->progress_indication
;
931 /* Else assume format_unit has finished, and we're at 0x10000 */
933 ide_hwif_t
*hwif
= drive
->hwif
;
937 local_irq_save(flags
);
938 stat
= hwif
->tp_ops
->read_status(hwif
);
939 local_irq_restore(flags
);
941 progress_indication
= ((stat
& SEEK_STAT
) == 0) ? 0 : 0x10000;
943 if (put_user(progress_indication
, arg
))
949 static sector_t
idefloppy_capacity(ide_drive_t
*drive
)
951 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
952 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
958 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
961 static int idefloppy_identify_device(ide_drive_t
*drive
, struct hd_driveid
*id
)
964 u8 device_type
, protocol
, removable
, drq_type
, packet_size
;
966 *((u16
*) &gcw
) = id
->config
;
968 device_type
= gcw
[1] & 0x1F;
969 removable
= (gcw
[0] & 0x80) >> 7;
970 protocol
= (gcw
[1] & 0xC0) >> 6;
971 drq_type
= (gcw
[0] & 0x60) >> 5;
972 packet_size
= gcw
[0] & 0x03;
975 /* kludge for Apple PowerBook internal zip */
976 if (device_type
== 5 &&
977 !strstr(id
->model
, "CD-ROM") && strstr(id
->model
, "ZIP"))
982 printk(KERN_ERR
"ide-floppy: Protocol (0x%02x) is not ATAPI\n",
984 else if (device_type
!= 0)
985 printk(KERN_ERR
"ide-floppy: Device type (0x%02x) is not set "
986 "to floppy\n", device_type
);
988 printk(KERN_ERR
"ide-floppy: The removable flag is not set\n");
989 else if (drq_type
== 3)
990 printk(KERN_ERR
"ide-floppy: Sorry, DRQ type (0x%02x) not "
991 "supported\n", drq_type
);
992 else if (packet_size
!= 0)
993 printk(KERN_ERR
"ide-floppy: Packet size (0x%02x) is not 12 "
994 "bytes\n", packet_size
);
1000 #ifdef CONFIG_IDE_PROC_FS
1001 static void idefloppy_add_settings(ide_drive_t
*drive
)
1003 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1005 ide_add_setting(drive
, "bios_cyl", SETTING_RW
, TYPE_INT
, 0, 1023, 1, 1,
1006 &drive
->bios_cyl
, NULL
);
1007 ide_add_setting(drive
, "bios_head", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1008 &drive
->bios_head
, NULL
);
1009 ide_add_setting(drive
, "bios_sect", SETTING_RW
, TYPE_BYTE
, 0, 63, 1, 1,
1010 &drive
->bios_sect
, NULL
);
1011 ide_add_setting(drive
, "ticks", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1012 &floppy
->ticks
, NULL
);
1015 static inline void idefloppy_add_settings(ide_drive_t
*drive
) { ; }
1018 static void idefloppy_setup(ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
1022 *((u16
*) &gcw
) = drive
->id
->config
;
1023 floppy
->pc
= floppy
->pc_stack
;
1024 drive
->pc_callback
= ide_floppy_callback
;
1026 if (((gcw
[0] & 0x60) >> 5) == 1)
1027 drive
->atapi_flags
|= IDE_AFLAG_DRQ_INTERRUPT
;
1029 * We used to check revisions here. At this point however I'm giving up.
1030 * Just assume they are all broken, its easier.
1032 * The actual reason for the workarounds was likely a driver bug after
1033 * all rather than a firmware bug, and the workaround below used to hide
1034 * it. It should be fixed as of version 1.9, but to be on the safe side
1035 * we'll leave the limitation below for the 2.2.x tree.
1037 if (!strncmp(drive
->id
->model
, "IOMEGA ZIP 100 ATAPI", 20)) {
1038 drive
->atapi_flags
|= IDE_AFLAG_ZIP_DRIVE
;
1039 /* This value will be visible in the /proc/ide/hdx/settings */
1040 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
1041 blk_queue_max_sectors(drive
->queue
, 64);
1045 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1046 * nasty clicking noises without it, so please don't remove this.
1048 if (strncmp(drive
->id
->model
, "IOMEGA Clik!", 11) == 0) {
1049 blk_queue_max_sectors(drive
->queue
, 64);
1050 drive
->atapi_flags
|= IDE_AFLAG_CLIK_DRIVE
;
1053 (void) ide_floppy_get_capacity(drive
);
1054 idefloppy_add_settings(drive
);
1057 static void ide_floppy_remove(ide_drive_t
*drive
)
1059 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1060 struct gendisk
*g
= floppy
->disk
;
1062 ide_proc_unregister_driver(drive
, floppy
->driver
);
1066 ide_floppy_put(floppy
);
1069 static void idefloppy_cleanup_obj(struct kref
*kref
)
1071 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
1072 ide_drive_t
*drive
= floppy
->drive
;
1073 struct gendisk
*g
= floppy
->disk
;
1075 drive
->driver_data
= NULL
;
1076 g
->private_data
= NULL
;
1081 #ifdef CONFIG_IDE_PROC_FS
1082 static int proc_idefloppy_read_capacity(char *page
, char **start
, off_t off
,
1083 int count
, int *eof
, void *data
)
1085 ide_drive_t
*drive
= (ide_drive_t
*)data
;
1088 len
= sprintf(page
, "%llu\n", (long long)idefloppy_capacity(drive
));
1089 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1092 static ide_proc_entry_t idefloppy_proc
[] = {
1093 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
1094 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
1095 { NULL
, 0, NULL
, NULL
}
1097 #endif /* CONFIG_IDE_PROC_FS */
1099 static int ide_floppy_probe(ide_drive_t
*);
1101 static ide_driver_t idefloppy_driver
= {
1103 .owner
= THIS_MODULE
,
1104 .name
= "ide-floppy",
1105 .bus
= &ide_bus_type
,
1107 .probe
= ide_floppy_probe
,
1108 .remove
= ide_floppy_remove
,
1109 .version
= IDEFLOPPY_VERSION
,
1110 .media
= ide_floppy
,
1111 .supports_dsc_overlap
= 0,
1112 .do_request
= idefloppy_do_request
,
1113 .end_request
= idefloppy_end_request
,
1114 .error
= __ide_error
,
1115 #ifdef CONFIG_IDE_PROC_FS
1116 .proc
= idefloppy_proc
,
1120 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
1122 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1123 struct ide_floppy_obj
*floppy
;
1125 struct ide_atapi_pc pc
;
1128 debug_log("Reached %s\n", __func__
);
1130 floppy
= ide_floppy_get(disk
);
1134 drive
= floppy
->drive
;
1138 if (floppy
->openers
== 1) {
1139 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
1142 idefloppy_init_pc(&pc
);
1143 pc
.c
[0] = GPCMD_TEST_UNIT_READY
;
1145 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1146 idefloppy_create_start_stop_cmd(&pc
, 1);
1147 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1150 if (ide_floppy_get_capacity(drive
)
1151 && (filp
->f_flags
& O_NDELAY
) == 0
1153 * Allow O_NDELAY to open a drive without a disk, or with an
1154 * unreadable disk, so that we can get the format capacity
1155 * of the drive or begin the format - Sam
1159 goto out_put_floppy
;
1162 if (floppy
->wp
&& (filp
->f_mode
& 2)) {
1164 goto out_put_floppy
;
1166 drive
->atapi_flags
|= IDE_AFLAG_MEDIA_CHANGED
;
1167 /* IOMEGA Clik! drives do not support lock/unlock commands */
1168 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
)) {
1169 idefloppy_create_prevent_cmd(&pc
, 1);
1170 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1172 check_disk_change(inode
->i_bdev
);
1173 } else if (drive
->atapi_flags
& IDE_AFLAG_FORMAT_IN_PROGRESS
) {
1175 goto out_put_floppy
;
1181 ide_floppy_put(floppy
);
1185 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
1187 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1188 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1189 ide_drive_t
*drive
= floppy
->drive
;
1190 struct ide_atapi_pc pc
;
1192 debug_log("Reached %s\n", __func__
);
1194 if (floppy
->openers
== 1) {
1195 /* IOMEGA Clik! drives do not support lock/unlock commands */
1196 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
)) {
1197 idefloppy_create_prevent_cmd(&pc
, 0);
1198 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1201 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
1206 ide_floppy_put(floppy
);
1211 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1213 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1214 ide_drive_t
*drive
= floppy
->drive
;
1216 geo
->heads
= drive
->bios_head
;
1217 geo
->sectors
= drive
->bios_sect
;
1218 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
1222 static int ide_floppy_lockdoor(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
1223 unsigned long arg
, unsigned int cmd
)
1225 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1227 if (floppy
->openers
> 1)
1230 /* The IOMEGA Clik! Drive doesn't support this command -
1231 * no room for an eject mechanism */
1232 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
)) {
1233 int prevent
= arg
? 1 : 0;
1235 if (cmd
== CDROMEJECT
)
1238 idefloppy_create_prevent_cmd(pc
, prevent
);
1239 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1242 if (cmd
== CDROMEJECT
) {
1243 idefloppy_create_start_stop_cmd(pc
, 2);
1244 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1250 static int ide_floppy_format_unit(idefloppy_floppy_t
*floppy
,
1253 struct ide_atapi_pc pc
;
1254 ide_drive_t
*drive
= floppy
->drive
;
1255 int blocks
, length
, flags
, err
= 0;
1257 if (floppy
->openers
> 1) {
1258 /* Don't format if someone is using the disk */
1259 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
1263 drive
->atapi_flags
|= IDE_AFLAG_FORMAT_IN_PROGRESS
;
1266 * Send ATAPI_FORMAT_UNIT to the drive.
1268 * Userland gives us the following structure:
1270 * struct idefloppy_format_command {
1276 * flags is a bitmask, currently, the only defined flag is:
1278 * 0x01 - verify media after format.
1280 if (get_user(blocks
, arg
) ||
1281 get_user(length
, arg
+1) ||
1282 get_user(flags
, arg
+2)) {
1287 (void) idefloppy_get_sfrp_bit(drive
);
1288 idefloppy_create_format_unit_cmd(&pc
, blocks
, length
, flags
);
1290 if (idefloppy_queue_pc_tail(drive
, &pc
))
1295 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
1300 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
1301 unsigned int cmd
, unsigned long arg
)
1303 struct block_device
*bdev
= inode
->i_bdev
;
1304 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1305 ide_drive_t
*drive
= floppy
->drive
;
1306 struct ide_atapi_pc pc
;
1307 void __user
*argp
= (void __user
*)arg
;
1313 case CDROM_LOCKDOOR
:
1314 return ide_floppy_lockdoor(drive
, &pc
, arg
, cmd
);
1315 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED
:
1317 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY
:
1318 return ide_floppy_get_format_capacities(drive
, argp
);
1319 case IDEFLOPPY_IOCTL_FORMAT_START
:
1320 if (!(file
->f_mode
& 2))
1323 return ide_floppy_format_unit(floppy
, (int __user
*)arg
);
1324 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS
:
1325 return idefloppy_get_format_progress(drive
, argp
);
1329 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1330 * and CDROM_SEND_PACKET (legacy) ioctls
1332 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
1333 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
1334 bdev
->bd_disk
, cmd
, argp
);
1339 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
1344 static int idefloppy_media_changed(struct gendisk
*disk
)
1346 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1347 ide_drive_t
*drive
= floppy
->drive
;
1350 /* do not scan partitions twice if this is a removable device */
1351 if (drive
->attach
) {
1355 ret
= !!(drive
->atapi_flags
& IDE_AFLAG_MEDIA_CHANGED
);
1356 drive
->atapi_flags
&= ~IDE_AFLAG_MEDIA_CHANGED
;
1360 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
1362 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1363 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
1367 static struct block_device_operations idefloppy_ops
= {
1368 .owner
= THIS_MODULE
,
1369 .open
= idefloppy_open
,
1370 .release
= idefloppy_release
,
1371 .ioctl
= idefloppy_ioctl
,
1372 .getgeo
= idefloppy_getgeo
,
1373 .media_changed
= idefloppy_media_changed
,
1374 .revalidate_disk
= idefloppy_revalidate_disk
1377 static int ide_floppy_probe(ide_drive_t
*drive
)
1379 idefloppy_floppy_t
*floppy
;
1382 if (!strstr("ide-floppy", drive
->driver_req
))
1384 if (!drive
->present
)
1386 if (drive
->media
!= ide_floppy
)
1388 if (!idefloppy_identify_device(drive
, drive
->id
)) {
1389 printk(KERN_ERR
"ide-floppy: %s: not supported by this version"
1390 " of ide-floppy\n", drive
->name
);
1393 floppy
= kzalloc(sizeof(idefloppy_floppy_t
), GFP_KERNEL
);
1395 printk(KERN_ERR
"ide-floppy: %s: Can't allocate a floppy"
1396 " structure\n", drive
->name
);
1400 g
= alloc_disk(1 << PARTN_BITS
);
1402 goto out_free_floppy
;
1404 ide_init_disk(g
, drive
);
1406 ide_proc_register_driver(drive
, &idefloppy_driver
);
1408 kref_init(&floppy
->kref
);
1410 floppy
->drive
= drive
;
1411 floppy
->driver
= &idefloppy_driver
;
1414 g
->private_data
= &floppy
->driver
;
1416 drive
->driver_data
= floppy
;
1418 idefloppy_setup(drive
, floppy
);
1420 g
->minors
= 1 << PARTN_BITS
;
1421 g
->driverfs_dev
= &drive
->gendev
;
1422 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
1423 g
->fops
= &idefloppy_ops
;
1434 static void __exit
idefloppy_exit(void)
1436 driver_unregister(&idefloppy_driver
.gen_driver
);
1439 static int __init
idefloppy_init(void)
1441 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
1442 return driver_register(&idefloppy_driver
.gen_driver
);
1445 MODULE_ALIAS("ide:*m-floppy*");
1446 module_init(idefloppy_init
);
1447 module_exit(idefloppy_exit
);
1448 MODULE_LICENSE("GPL");
1449 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");