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 /* define to see debug info */
50 #define IDEFLOPPY_DEBUG_LOG 0
52 /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
53 #define IDEFLOPPY_DEBUG(fmt, args...)
55 #if IDEFLOPPY_DEBUG_LOG
56 #define debug_log(fmt, args...) \
57 printk(KERN_INFO "ide-floppy: " fmt, ## args)
59 #define debug_log(fmt, args...) do {} while (0)
63 /* Some drives require a longer irq timeout. */
64 #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
67 * After each failed packet command we issue a request sense command and retry
68 * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
70 #define IDEFLOPPY_MAX_PC_RETRIES 3
73 * With each packet command, we allocate a buffer of IDEFLOPPY_PC_BUFFER_SIZE
76 #define IDEFLOPPY_PC_BUFFER_SIZE 256
79 * In various places in the driver, we need to allocate storage for packet
80 * commands, which will remain valid while we leave the driver to wait for
81 * an interrupt or a timeout event.
83 #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
85 /* format capacities descriptor codes */
86 #define CAPACITY_INVALID 0x00
87 #define CAPACITY_UNFORMATTED 0x01
88 #define CAPACITY_CURRENT 0x02
89 #define CAPACITY_NO_CARTRIDGE 0x03
92 * Most of our global data which we need to save even as we leave the driver
93 * due to an interrupt or a timer event is stored in a variable of type
94 * idefloppy_floppy_t, defined below.
96 typedef struct ide_floppy_obj
{
101 unsigned int openers
; /* protected by BKL for now */
103 /* Current packet command */
104 struct ide_atapi_pc
*pc
;
105 /* Last failed packet command */
106 struct ide_atapi_pc
*failed_pc
;
107 /* Packet command stack */
108 struct ide_atapi_pc pc_stack
[IDEFLOPPY_PC_STACK
];
109 /* Next free packet command storage space */
112 struct request request_sense_rq
;
114 /* Last error information */
115 u8 sense_key
, asc
, ascq
;
116 /* delay this long before sending packet command */
118 int progress_indication
;
120 /* Device information */
122 int blocks
, block_size
, bs_factor
;
123 /* Last format capacity descriptor */
125 /* Copy of the flexible disk page */
126 u8 flexible_disk_page
[32];
129 /* Supports format progress report */
131 } idefloppy_floppy_t
;
133 #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
135 /* Defines for the MODE SENSE command */
136 #define MODE_SENSE_CURRENT 0x00
137 #define MODE_SENSE_CHANGEABLE 0x01
138 #define MODE_SENSE_DEFAULT 0x02
139 #define MODE_SENSE_SAVED 0x03
141 /* IOCTLs used in low-level formatting. */
142 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
143 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
144 #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
145 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
147 /* Error code returned in rq->errors to the higher part of the driver. */
148 #define IDEFLOPPY_ERROR_GENERAL 101
151 * Pages of the SELECT SENSE / MODE SENSE packet commands.
152 * See SFF-8070i spec.
154 #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
155 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
157 static DEFINE_MUTEX(idefloppy_ref_mutex
);
159 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
161 #define ide_floppy_g(disk) \
162 container_of((disk)->private_data, struct ide_floppy_obj, driver)
164 static void idefloppy_cleanup_obj(struct kref
*);
166 static struct ide_floppy_obj
*ide_floppy_get(struct gendisk
*disk
)
168 struct ide_floppy_obj
*floppy
= NULL
;
170 mutex_lock(&idefloppy_ref_mutex
);
171 floppy
= ide_floppy_g(disk
);
173 if (ide_device_get(floppy
->drive
))
176 kref_get(&floppy
->kref
);
178 mutex_unlock(&idefloppy_ref_mutex
);
182 static void ide_floppy_put(struct ide_floppy_obj
*floppy
)
184 ide_drive_t
*drive
= floppy
->drive
;
186 mutex_lock(&idefloppy_ref_mutex
);
187 kref_put(&floppy
->kref
, idefloppy_cleanup_obj
);
188 ide_device_put(drive
);
189 mutex_unlock(&idefloppy_ref_mutex
);
193 * Used to finish servicing a request. For read/write requests, we will call
194 * ide_end_request to pass to the next buffer.
196 static int idefloppy_end_request(ide_drive_t
*drive
, int uptodate
, int nsecs
)
198 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
199 struct request
*rq
= HWGROUP(drive
)->rq
;
202 debug_log("Reached %s\n", __func__
);
205 case 0: error
= IDEFLOPPY_ERROR_GENERAL
; break;
206 case 1: error
= 0; break;
207 default: error
= uptodate
;
210 floppy
->failed_pc
= NULL
;
211 /* Why does this happen? */
214 if (!blk_special_request(rq
)) {
215 /* our real local end request function */
216 ide_end_request(drive
, uptodate
, nsecs
);
220 /* fixme: need to move this local also */
221 ide_end_drive_cmd(drive
, 0, 0);
225 static void ide_floppy_io_buffers(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
226 unsigned int bcount
, int direction
)
228 ide_hwif_t
*hwif
= drive
->hwif
;
229 const struct ide_tp_ops
*tp_ops
= hwif
->tp_ops
;
230 xfer_func_t
*xf
= direction
? tp_ops
->output_data
: tp_ops
->input_data
;
231 struct scatterlist
*sg
= pc
->sg
;
236 count
= min(sg
->length
- pc
->b_count
, bcount
);
237 if (PageHighMem(sg_page(sg
))) {
240 local_irq_save(flags
);
241 buf
= kmap_atomic(sg_page(sg
), KM_IRQ0
) + sg
->offset
;
242 xf(drive
, NULL
, buf
+ pc
->b_count
, count
);
243 kunmap_atomic(buf
- sg
->offset
, KM_IRQ0
);
244 local_irq_restore(flags
);
247 xf(drive
, NULL
, buf
+ pc
->b_count
, count
);
250 pc
->b_count
+= count
;
253 if (pc
->b_count
== sg
->length
) {
256 pc
->sg
= sg
= sg_next(sg
);
261 idefloppy_end_request(drive
, 1, done
>> 9);
264 printk(KERN_ERR
"%s: leftover data in %s, bcount == %d\n",
265 drive
->name
, __func__
, bcount
);
266 ide_pad_transfer(drive
, direction
, bcount
);
270 static void idefloppy_update_buffers(ide_drive_t
*drive
,
271 struct ide_atapi_pc
*pc
)
273 struct request
*rq
= pc
->rq
;
274 struct bio
*bio
= rq
->bio
;
276 while ((bio
= rq
->bio
) != NULL
)
277 idefloppy_end_request(drive
, 1, 0);
281 * Generate a new packet command request in front of the request queue, before
282 * the current request so that it will be processed immediately, on the next
283 * pass through the driver.
285 static void idefloppy_queue_pc_head(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
288 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
290 blk_rq_init(NULL
, rq
);
291 rq
->buffer
= (char *) pc
;
292 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
293 rq
->cmd_flags
|= REQ_PREEMPT
;
294 rq
->rq_disk
= floppy
->disk
;
295 memcpy(rq
->cmd
, pc
->c
, 12);
296 ide_do_drive_cmd(drive
, rq
);
299 static struct ide_atapi_pc
*idefloppy_next_pc_storage(ide_drive_t
*drive
)
301 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
303 if (floppy
->pc_stack_index
== IDEFLOPPY_PC_STACK
)
304 floppy
->pc_stack_index
= 0;
305 return (&floppy
->pc_stack
[floppy
->pc_stack_index
++]);
308 static void ide_floppy_callback(ide_drive_t
*drive
)
310 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
311 struct ide_atapi_pc
*pc
= floppy
->pc
;
312 int uptodate
= pc
->error
? 0 : 1;
314 debug_log("Reached %s\n", __func__
);
316 if (floppy
->failed_pc
== pc
)
317 floppy
->failed_pc
= NULL
;
319 if (pc
->c
[0] == GPCMD_READ_10
|| pc
->c
[0] == GPCMD_WRITE_10
||
320 (pc
->rq
&& blk_pc_request(pc
->rq
)))
321 uptodate
= 1; /* FIXME */
322 else if (pc
->c
[0] == GPCMD_REQUEST_SENSE
) {
323 u8
*buf
= floppy
->pc
->buf
;
326 floppy
->sense_key
= buf
[2] & 0x0F;
327 floppy
->asc
= buf
[12];
328 floppy
->ascq
= buf
[13];
329 floppy
->progress_indication
= buf
[15] & 0x80 ?
330 (u16
)get_unaligned((u16
*)&buf
[16]) : 0x10000;
332 if (floppy
->failed_pc
)
333 debug_log("pc = %x, ", floppy
->failed_pc
->c
[0]);
335 debug_log("sense key = %x, asc = %x, ascq = %x\n",
336 floppy
->sense_key
, floppy
->asc
, floppy
->ascq
);
338 printk(KERN_ERR
"Error in REQUEST SENSE itself - "
339 "Aborting request!\n");
342 idefloppy_end_request(drive
, uptodate
, 0);
345 static void idefloppy_init_pc(struct ide_atapi_pc
*pc
)
347 memset(pc
, 0, sizeof(*pc
));
348 pc
->buf
= pc
->pc_buf
;
349 pc
->buf_size
= IDEFLOPPY_PC_BUFFER_SIZE
;
352 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc
*pc
)
354 idefloppy_init_pc(pc
);
355 pc
->c
[0] = GPCMD_REQUEST_SENSE
;
361 * Called when an error was detected during the last packet command. We queue a
362 * request sense packet command in the head of the request list.
364 static void idefloppy_retry_pc(ide_drive_t
*drive
)
366 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
367 struct request
*rq
= &floppy
->request_sense_rq
;
368 struct ide_atapi_pc
*pc
;
370 (void)ide_read_error(drive
);
371 pc
= idefloppy_next_pc_storage(drive
);
372 idefloppy_create_request_sense_cmd(pc
);
373 idefloppy_queue_pc_head(drive
, pc
, rq
);
376 /* The usual interrupt handler called during a packet command. */
377 static ide_startstop_t
idefloppy_pc_intr(ide_drive_t
*drive
)
379 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
381 return ide_pc_intr(drive
, floppy
->pc
, idefloppy_pc_intr
,
382 IDEFLOPPY_WAIT_CMD
, NULL
, idefloppy_update_buffers
,
383 idefloppy_retry_pc
, NULL
, ide_floppy_io_buffers
);
387 * What we have here is a classic case of a top half / bottom half interrupt
388 * service routine. In interrupt mode, the device sends an interrupt to signal
389 * that it is ready to receive a packet. However, we need to delay about 2-3
390 * ticks before issuing the packet or we gets in trouble.
392 static int idefloppy_transfer_pc(ide_drive_t
*drive
)
394 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
396 /* Send the actual packet */
397 drive
->hwif
->tp_ops
->output_data(drive
, NULL
, floppy
->pc
->c
, 12);
399 /* Timeout for the packet command */
400 return IDEFLOPPY_WAIT_CMD
;
405 * Called as an interrupt (or directly). When the device says it's ready for a
406 * packet, we schedule the packet transfer to occur about 2-3 ticks later in
409 static ide_startstop_t
idefloppy_start_pc_transfer(ide_drive_t
*drive
)
411 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
412 struct ide_atapi_pc
*pc
= floppy
->pc
;
413 ide_expiry_t
*expiry
;
414 unsigned int timeout
;
417 * The following delay solves a problem with ATAPI Zip 100 drives
418 * where the Busy flag was apparently being deasserted before the
419 * unit was ready to receive data. This was happening on a
420 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
421 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
422 * used until after the packet is moved in about 50 msec.
424 if (drive
->atapi_flags
& IDE_AFLAG_ZIP_DRIVE
) {
425 timeout
= floppy
->ticks
;
426 expiry
= &idefloppy_transfer_pc
;
428 timeout
= IDEFLOPPY_WAIT_CMD
;
432 return ide_transfer_pc(drive
, pc
, idefloppy_pc_intr
, timeout
, expiry
);
435 static void ide_floppy_report_error(idefloppy_floppy_t
*floppy
,
436 struct ide_atapi_pc
*pc
)
438 /* supress error messages resulting from Medium not present */
439 if (floppy
->sense_key
== 0x02 &&
440 floppy
->asc
== 0x3a &&
441 floppy
->ascq
== 0x00)
444 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
445 "asc = %2x, ascq = %2x\n",
446 floppy
->drive
->name
, pc
->c
[0], floppy
->sense_key
,
447 floppy
->asc
, floppy
->ascq
);
451 static ide_startstop_t
idefloppy_issue_pc(ide_drive_t
*drive
,
452 struct ide_atapi_pc
*pc
)
454 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
456 if (floppy
->failed_pc
== NULL
&&
457 pc
->c
[0] != GPCMD_REQUEST_SENSE
)
458 floppy
->failed_pc
= pc
;
459 /* Set the current packet command */
462 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
) {
463 if (!(pc
->flags
& PC_FLAG_SUPPRESS_ERROR
))
464 ide_floppy_report_error(floppy
, pc
);
466 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
468 floppy
->failed_pc
= NULL
;
469 drive
->pc_callback(drive
);
473 debug_log("Retry number - %d\n", pc
->retries
);
477 return ide_issue_pc(drive
, pc
, idefloppy_start_pc_transfer
,
478 IDEFLOPPY_WAIT_CMD
, NULL
);
481 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc
*pc
, int prevent
)
483 debug_log("creating prevent removal command, prevent = %d\n", prevent
);
485 idefloppy_init_pc(pc
);
486 pc
->c
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
490 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc
*pc
)
492 idefloppy_init_pc(pc
);
493 pc
->c
[0] = GPCMD_READ_FORMAT_CAPACITIES
;
499 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc
*pc
, int b
,
502 idefloppy_init_pc(pc
);
503 pc
->c
[0] = GPCMD_FORMAT_UNIT
;
506 memset(pc
->buf
, 0, 12);
508 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
510 if (flags
& 1) /* Verify bit on... */
511 pc
->buf
[1] ^= 0x20; /* ... turn off DCRT bit */
514 put_unaligned(cpu_to_be32(b
), (unsigned int *)(&pc
->buf
[4]));
515 put_unaligned(cpu_to_be32(l
), (unsigned int *)(&pc
->buf
[8]));
517 pc
->flags
|= PC_FLAG_WRITING
;
520 /* A mode sense command is used to "sense" floppy parameters. */
521 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc
*pc
,
522 u8 page_code
, u8 type
)
524 u16 length
= 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
526 idefloppy_init_pc(pc
);
527 pc
->c
[0] = GPCMD_MODE_SENSE_10
;
529 pc
->c
[2] = page_code
+ (type
<< 6);
532 case IDEFLOPPY_CAPABILITIES_PAGE
:
535 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
539 printk(KERN_ERR
"ide-floppy: unsupported page code "
540 "in create_mode_sense_cmd\n");
542 put_unaligned(cpu_to_be16(length
), (u16
*) &pc
->c
[7]);
543 pc
->req_xfer
= length
;
546 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc
*pc
, int start
)
548 idefloppy_init_pc(pc
);
549 pc
->c
[0] = GPCMD_START_STOP_UNIT
;
553 static void idefloppy_create_rw_cmd(idefloppy_floppy_t
*floppy
,
554 struct ide_atapi_pc
*pc
, struct request
*rq
,
555 unsigned long sector
)
557 int block
= sector
/ floppy
->bs_factor
;
558 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
559 int cmd
= rq_data_dir(rq
);
561 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
564 idefloppy_init_pc(pc
);
565 pc
->c
[0] = cmd
== READ
? GPCMD_READ_10
: GPCMD_WRITE_10
;
566 put_unaligned(cpu_to_be16(blocks
), (unsigned short *)&pc
->c
[7]);
567 put_unaligned(cpu_to_be32(block
), (unsigned int *) &pc
->c
[2]);
569 memcpy(rq
->cmd
, pc
->c
, 12);
573 if (rq
->cmd_flags
& REQ_RW
)
574 pc
->flags
|= PC_FLAG_WRITING
;
576 pc
->req_xfer
= pc
->buf_size
= blocks
* floppy
->block_size
;
577 pc
->flags
|= PC_FLAG_DMA_OK
;
580 static void idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
,
581 struct ide_atapi_pc
*pc
, struct request
*rq
)
583 idefloppy_init_pc(pc
);
584 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
587 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
588 pc
->flags
|= PC_FLAG_WRITING
;
591 pc
->flags
|= PC_FLAG_DMA_OK
;
593 * possibly problematic, doesn't look like ide-floppy correctly
594 * handled scattered requests if dma fails...
596 pc
->req_xfer
= pc
->buf_size
= rq
->data_len
;
599 static ide_startstop_t
idefloppy_do_request(ide_drive_t
*drive
,
600 struct request
*rq
, sector_t block_s
)
602 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
603 ide_hwif_t
*hwif
= drive
->hwif
;
604 struct ide_atapi_pc
*pc
;
605 unsigned long block
= (unsigned long)block_s
;
607 debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n",
608 __func__
, rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
609 rq
->cmd
[0], rq
->cmd_type
, rq
->errors
);
611 debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",
612 __func__
, (long)rq
->sector
, rq
->nr_sectors
,
613 rq
->current_nr_sectors
);
615 if (rq
->errors
>= ERROR_MAX
) {
616 if (floppy
->failed_pc
)
617 ide_floppy_report_error(floppy
, floppy
->failed_pc
);
619 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
621 idefloppy_end_request(drive
, 0, 0);
624 if (blk_fs_request(rq
)) {
625 if (((long)rq
->sector
% floppy
->bs_factor
) ||
626 (rq
->nr_sectors
% floppy
->bs_factor
)) {
627 printk(KERN_ERR
"%s: unsupported r/w request size\n",
629 idefloppy_end_request(drive
, 0, 0);
632 pc
= idefloppy_next_pc_storage(drive
);
633 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
634 } else if (blk_special_request(rq
)) {
635 pc
= (struct ide_atapi_pc
*) rq
->buffer
;
636 } else if (blk_pc_request(rq
)) {
637 pc
= idefloppy_next_pc_storage(drive
);
638 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
640 blk_dump_rq_flags(rq
,
641 "ide-floppy: unsupported command in queue");
642 idefloppy_end_request(drive
, 0, 0);
646 ide_init_sg_cmd(drive
, rq
);
647 ide_map_sg(drive
, rq
);
649 pc
->sg
= hwif
->sg_table
;
650 pc
->sg_cnt
= hwif
->sg_nents
;
654 return idefloppy_issue_pc(drive
, pc
);
658 * Add a special packet command request to the tail of the request queue,
659 * and wait for it to be serviced.
661 static int idefloppy_queue_pc_tail(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
)
663 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
667 rq
= blk_get_request(drive
->queue
, READ
, __GFP_WAIT
);
668 rq
->buffer
= (char *) pc
;
669 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
670 memcpy(rq
->cmd
, pc
->c
, 12);
671 error
= blk_execute_rq(drive
->queue
, floppy
->disk
, rq
, 0);
678 * Look at the flexible disk page parameters. We ignore the CHS capacity
679 * parameters and use the LBA parameters instead.
681 static int ide_floppy_get_flexible_disk_page(ide_drive_t
*drive
)
683 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
684 struct ide_atapi_pc pc
;
686 int capacity
, lba_capacity
;
687 u16 transfer_rate
, sector_size
, cyls
, rpm
;
690 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
,
693 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
694 printk(KERN_ERR
"ide-floppy: Can't get flexible disk page"
698 floppy
->wp
= !!(pc
.buf
[3] & 0x80);
699 set_disk_ro(floppy
->disk
, floppy
->wp
);
702 transfer_rate
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 2]);
703 sector_size
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 6]);
704 cyls
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 8]);
705 rpm
= be16_to_cpup((__be16
*)&pc
.buf
[8 + 28]);
706 heads
= pc
.buf
[8 + 4];
707 sectors
= pc
.buf
[8 + 5];
709 capacity
= cyls
* heads
* sectors
* sector_size
;
711 if (memcmp(page
, &floppy
->flexible_disk_page
, 32))
712 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
713 "%d sector size, %d rpm\n",
714 drive
->name
, capacity
/ 1024, cyls
, heads
,
715 sectors
, transfer_rate
/ 8, sector_size
, rpm
);
717 memcpy(&floppy
->flexible_disk_page
, page
, 32);
718 drive
->bios_cyl
= cyls
;
719 drive
->bios_head
= heads
;
720 drive
->bios_sect
= sectors
;
721 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
723 if (capacity
< lba_capacity
) {
724 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
725 "bytes, but the drive only handles %d\n",
726 drive
->name
, lba_capacity
, capacity
);
727 floppy
->blocks
= floppy
->block_size
?
728 capacity
/ floppy
->block_size
: 0;
733 static int idefloppy_get_sfrp_bit(ide_drive_t
*drive
)
735 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
736 struct ide_atapi_pc pc
;
739 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_CAPABILITIES_PAGE
,
742 pc
.flags
|= PC_FLAG_SUPPRESS_ERROR
;
743 if (idefloppy_queue_pc_tail(drive
, &pc
))
746 floppy
->srfp
= pc
.buf
[8 + 2] & 0x40;
751 * Determine if a media is present in the floppy drive, and if so, its LBA
754 static int ide_floppy_get_capacity(ide_drive_t
*drive
)
756 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
757 struct ide_atapi_pc pc
;
759 u8 header_len
, desc_cnt
;
760 int i
, rc
= 1, blocks
, length
;
763 drive
->bios_head
= drive
->bios_sect
= 0;
765 floppy
->bs_factor
= 1;
766 set_capacity(floppy
->disk
, 0);
768 idefloppy_create_read_capacity_cmd(&pc
);
769 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
770 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
773 header_len
= pc
.buf
[3];
774 cap_desc
= &pc
.buf
[4];
775 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
777 for (i
= 0; i
< desc_cnt
; i
++) {
778 unsigned int desc_start
= 4 + i
*8;
780 blocks
= be32_to_cpup((__be32
*)&pc
.buf
[desc_start
]);
781 length
= be16_to_cpup((__be16
*)&pc
.buf
[desc_start
+ 6]);
783 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
784 i
, blocks
* length
/ 1024, blocks
, length
);
789 * the code below is valid only for the 1st descriptor, ie i=0
792 switch (pc
.buf
[desc_start
+ 4] & 0x03) {
793 /* Clik! drive returns this instead of CAPACITY_CURRENT */
794 case CAPACITY_UNFORMATTED
:
795 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
))
797 * If it is not a clik drive, break out
798 * (maintains previous driver behaviour)
801 case CAPACITY_CURRENT
:
802 /* Normal Zip/LS-120 disks */
803 if (memcmp(cap_desc
, &floppy
->cap_desc
, 8))
804 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
805 "sector size\n", drive
->name
,
806 blocks
* length
/ 1024, blocks
, length
);
807 memcpy(&floppy
->cap_desc
, cap_desc
, 8);
809 if (!length
|| length
% 512) {
810 printk(KERN_NOTICE
"%s: %d bytes block size "
811 "not supported\n", drive
->name
, length
);
813 floppy
->blocks
= blocks
;
814 floppy
->block_size
= length
;
815 floppy
->bs_factor
= length
/ 512;
816 if (floppy
->bs_factor
!= 1)
817 printk(KERN_NOTICE
"%s: warning: non "
818 "512 bytes block size not "
824 case CAPACITY_NO_CARTRIDGE
:
826 * This is a KERN_ERR so it appears on screen
827 * for the user to see
829 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
831 case CAPACITY_INVALID
:
832 printk(KERN_ERR
"%s: Invalid capacity for disk "
833 "in drive\n", drive
->name
);
836 debug_log("Descriptor 0 Code: %d\n",
837 pc
.buf
[desc_start
+ 4] & 0x03);
840 /* Clik! disk does not support get_flexible_disk_page */
841 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
))
842 (void) ide_floppy_get_flexible_disk_page(drive
);
844 set_capacity(floppy
->disk
, floppy
->blocks
* floppy
->bs_factor
);
849 * Obtain the list of formattable capacities.
850 * Very similar to ide_floppy_get_capacity, except that we push the capacity
851 * descriptors to userland, instead of our own structures.
853 * Userland gives us the following structure:
855 * struct idefloppy_format_capacities {
863 * userland initializes nformats to the number of allocated formats[] records.
864 * On exit we set nformats to the number of records we've actually initialized.
867 static int ide_floppy_get_format_capacities(ide_drive_t
*drive
, int __user
*arg
)
869 struct ide_atapi_pc pc
;
870 u8 header_len
, desc_cnt
;
871 int i
, blocks
, length
, u_array_size
, u_index
;
874 if (get_user(u_array_size
, arg
))
877 if (u_array_size
<= 0)
880 idefloppy_create_read_capacity_cmd(&pc
);
881 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
882 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
886 header_len
= pc
.buf
[3];
887 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
893 * We always skip the first capacity descriptor. That's the current
894 * capacity. We are interested in the remaining descriptors, the
895 * formattable capacities.
897 for (i
= 1; i
< desc_cnt
; i
++) {
898 unsigned int desc_start
= 4 + i
*8;
900 if (u_index
>= u_array_size
)
901 break; /* User-supplied buffer too small */
903 blocks
= be32_to_cpup((__be32
*)&pc
.buf
[desc_start
]);
904 length
= be16_to_cpup((__be16
*)&pc
.buf
[desc_start
+ 6]);
906 if (put_user(blocks
, argp
))
911 if (put_user(length
, argp
))
919 if (put_user(u_index
, arg
))
926 * Get ATAPI_FORMAT_UNIT progress indication.
928 * Userland gives a pointer to an int. The int is set to a progress
929 * indicator 0-65536, with 65536=100%.
931 * If the drive does not support format progress indication, we just check
932 * the dsc bit, and return either 0 or 65536.
935 static int ide_floppy_get_format_progress(ide_drive_t
*drive
, int __user
*arg
)
937 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
938 struct ide_atapi_pc pc
;
939 int progress_indication
= 0x10000;
942 idefloppy_create_request_sense_cmd(&pc
);
943 if (idefloppy_queue_pc_tail(drive
, &pc
))
946 if (floppy
->sense_key
== 2 &&
949 progress_indication
= floppy
->progress_indication
;
951 /* Else assume format_unit has finished, and we're at 0x10000 */
953 ide_hwif_t
*hwif
= drive
->hwif
;
957 local_irq_save(flags
);
958 stat
= hwif
->tp_ops
->read_status(hwif
);
959 local_irq_restore(flags
);
961 progress_indication
= ((stat
& ATA_DSC
) == 0) ? 0 : 0x10000;
964 if (put_user(progress_indication
, arg
))
970 static sector_t
idefloppy_capacity(ide_drive_t
*drive
)
972 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
973 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
978 #ifdef CONFIG_IDE_PROC_FS
979 ide_devset_rw(bios_cyl
, 0, 1023, bios_cyl
);
980 ide_devset_rw(bios_head
, 0, 255, bios_head
);
981 ide_devset_rw(bios_sect
, 0, 63, bios_sect
);
983 static int get_ticks(ide_drive_t
*drive
)
985 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
986 return floppy
->ticks
;
989 static int set_ticks(ide_drive_t
*drive
, int arg
)
991 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
996 IDE_DEVSET(ticks
, S_RW
, 0, 255, get_ticks
, set_ticks
);
998 static const struct ide_devset
*idefloppy_settings
[] = {
999 &ide_devset_bios_cyl
,
1000 &ide_devset_bios_head
,
1001 &ide_devset_bios_sect
,
1007 static void idefloppy_setup(ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
1009 u16
*id
= drive
->id
;
1012 *((u16
*)&gcw
) = id
[ATA_ID_CONFIG
];
1013 floppy
->pc
= floppy
->pc_stack
;
1014 drive
->pc_callback
= ide_floppy_callback
;
1016 if (((gcw
[0] & 0x60) >> 5) == 1)
1017 drive
->atapi_flags
|= IDE_AFLAG_DRQ_INTERRUPT
;
1019 * We used to check revisions here. At this point however I'm giving up.
1020 * Just assume they are all broken, its easier.
1022 * The actual reason for the workarounds was likely a driver bug after
1023 * all rather than a firmware bug, and the workaround below used to hide
1024 * it. It should be fixed as of version 1.9, but to be on the safe side
1025 * we'll leave the limitation below for the 2.2.x tree.
1027 if (!strncmp((char *)&id
[ATA_ID_PROD
], "IOMEGA ZIP 100 ATAPI", 20)) {
1028 drive
->atapi_flags
|= IDE_AFLAG_ZIP_DRIVE
;
1029 /* This value will be visible in the /proc/ide/hdx/settings */
1030 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
1031 blk_queue_max_sectors(drive
->queue
, 64);
1035 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1036 * nasty clicking noises without it, so please don't remove this.
1038 if (strncmp((char *)&id
[ATA_ID_PROD
], "IOMEGA Clik!", 11) == 0) {
1039 blk_queue_max_sectors(drive
->queue
, 64);
1040 drive
->atapi_flags
|= IDE_AFLAG_CLIK_DRIVE
;
1043 (void) ide_floppy_get_capacity(drive
);
1045 ide_proc_register_driver(drive
, floppy
->driver
);
1048 static void ide_floppy_remove(ide_drive_t
*drive
)
1050 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1051 struct gendisk
*g
= floppy
->disk
;
1053 ide_proc_unregister_driver(drive
, floppy
->driver
);
1057 ide_floppy_put(floppy
);
1060 static void idefloppy_cleanup_obj(struct kref
*kref
)
1062 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
1063 ide_drive_t
*drive
= floppy
->drive
;
1064 struct gendisk
*g
= floppy
->disk
;
1066 drive
->driver_data
= NULL
;
1067 g
->private_data
= NULL
;
1072 #ifdef CONFIG_IDE_PROC_FS
1073 static int proc_idefloppy_read_capacity(char *page
, char **start
, off_t off
,
1074 int count
, int *eof
, void *data
)
1076 ide_drive_t
*drive
= (ide_drive_t
*)data
;
1079 len
= sprintf(page
, "%llu\n", (long long)idefloppy_capacity(drive
));
1080 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1083 static ide_proc_entry_t idefloppy_proc
[] = {
1084 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
1085 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
1086 { NULL
, 0, NULL
, NULL
}
1088 #endif /* CONFIG_IDE_PROC_FS */
1090 static int ide_floppy_probe(ide_drive_t
*);
1092 static ide_driver_t idefloppy_driver
= {
1094 .owner
= THIS_MODULE
,
1095 .name
= "ide-floppy",
1096 .bus
= &ide_bus_type
,
1098 .probe
= ide_floppy_probe
,
1099 .remove
= ide_floppy_remove
,
1100 .version
= IDEFLOPPY_VERSION
,
1101 .media
= ide_floppy
,
1102 .do_request
= idefloppy_do_request
,
1103 .end_request
= idefloppy_end_request
,
1104 .error
= __ide_error
,
1105 #ifdef CONFIG_IDE_PROC_FS
1106 .proc
= idefloppy_proc
,
1107 .settings
= idefloppy_settings
,
1111 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
1113 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1114 struct ide_floppy_obj
*floppy
;
1116 struct ide_atapi_pc pc
;
1119 debug_log("Reached %s\n", __func__
);
1121 floppy
= ide_floppy_get(disk
);
1125 drive
= floppy
->drive
;
1129 if (floppy
->openers
== 1) {
1130 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
1133 idefloppy_init_pc(&pc
);
1134 pc
.c
[0] = GPCMD_TEST_UNIT_READY
;
1136 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1137 idefloppy_create_start_stop_cmd(&pc
, 1);
1138 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1141 if (ide_floppy_get_capacity(drive
)
1142 && (filp
->f_flags
& O_NDELAY
) == 0
1144 * Allow O_NDELAY to open a drive without a disk, or with an
1145 * unreadable disk, so that we can get the format capacity
1146 * of the drive or begin the format - Sam
1150 goto out_put_floppy
;
1153 if (floppy
->wp
&& (filp
->f_mode
& 2)) {
1155 goto out_put_floppy
;
1157 drive
->atapi_flags
|= IDE_AFLAG_MEDIA_CHANGED
;
1158 /* IOMEGA Clik! drives do not support lock/unlock commands */
1159 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
)) {
1160 idefloppy_create_prevent_cmd(&pc
, 1);
1161 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1163 check_disk_change(inode
->i_bdev
);
1164 } else if (drive
->atapi_flags
& IDE_AFLAG_FORMAT_IN_PROGRESS
) {
1166 goto out_put_floppy
;
1172 ide_floppy_put(floppy
);
1176 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
1178 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1179 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1180 ide_drive_t
*drive
= floppy
->drive
;
1181 struct ide_atapi_pc pc
;
1183 debug_log("Reached %s\n", __func__
);
1185 if (floppy
->openers
== 1) {
1186 /* IOMEGA Clik! drives do not support lock/unlock commands */
1187 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
)) {
1188 idefloppy_create_prevent_cmd(&pc
, 0);
1189 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1192 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
1197 ide_floppy_put(floppy
);
1202 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1204 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1205 ide_drive_t
*drive
= floppy
->drive
;
1207 geo
->heads
= drive
->bios_head
;
1208 geo
->sectors
= drive
->bios_sect
;
1209 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
1213 static int ide_floppy_lockdoor(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
1214 unsigned long arg
, unsigned int cmd
)
1216 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1218 if (floppy
->openers
> 1)
1221 /* The IOMEGA Clik! Drive doesn't support this command -
1222 * no room for an eject mechanism */
1223 if (!(drive
->atapi_flags
& IDE_AFLAG_CLIK_DRIVE
)) {
1224 int prevent
= arg
? 1 : 0;
1226 if (cmd
== CDROMEJECT
)
1229 idefloppy_create_prevent_cmd(pc
, prevent
);
1230 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1233 if (cmd
== CDROMEJECT
) {
1234 idefloppy_create_start_stop_cmd(pc
, 2);
1235 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1241 static int ide_floppy_format_unit(ide_drive_t
*drive
, int __user
*arg
)
1243 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1244 struct ide_atapi_pc pc
;
1245 int blocks
, length
, flags
, err
= 0;
1247 if (floppy
->openers
> 1) {
1248 /* Don't format if someone is using the disk */
1249 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
1253 drive
->atapi_flags
|= IDE_AFLAG_FORMAT_IN_PROGRESS
;
1256 * Send ATAPI_FORMAT_UNIT to the drive.
1258 * Userland gives us the following structure:
1260 * struct idefloppy_format_command {
1266 * flags is a bitmask, currently, the only defined flag is:
1268 * 0x01 - verify media after format.
1270 if (get_user(blocks
, arg
) ||
1271 get_user(length
, arg
+1) ||
1272 get_user(flags
, arg
+2)) {
1277 (void) idefloppy_get_sfrp_bit(drive
);
1278 idefloppy_create_format_unit_cmd(&pc
, blocks
, length
, flags
);
1280 if (idefloppy_queue_pc_tail(drive
, &pc
))
1285 drive
->atapi_flags
&= ~IDE_AFLAG_FORMAT_IN_PROGRESS
;
1289 static int ide_floppy_format_ioctl(ide_drive_t
*drive
, struct file
*file
,
1290 unsigned int cmd
, void __user
*argp
)
1293 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED
:
1295 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY
:
1296 return ide_floppy_get_format_capacities(drive
, argp
);
1297 case IDEFLOPPY_IOCTL_FORMAT_START
:
1298 if (!(file
->f_mode
& 2))
1300 return ide_floppy_format_unit(drive
, (int __user
*)argp
);
1301 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS
:
1302 return ide_floppy_get_format_progress(drive
, argp
);
1308 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
1309 unsigned int cmd
, unsigned long arg
)
1311 struct block_device
*bdev
= inode
->i_bdev
;
1312 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1313 ide_drive_t
*drive
= floppy
->drive
;
1314 struct ide_atapi_pc pc
;
1315 void __user
*argp
= (void __user
*)arg
;
1318 if (cmd
== CDROMEJECT
|| cmd
== CDROM_LOCKDOOR
)
1319 return ide_floppy_lockdoor(drive
, &pc
, arg
, cmd
);
1321 err
= ide_floppy_format_ioctl(drive
, file
, cmd
, argp
);
1326 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1327 * and CDROM_SEND_PACKET (legacy) ioctls
1329 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
1330 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
1331 bdev
->bd_disk
, cmd
, argp
);
1334 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
1339 static int idefloppy_media_changed(struct gendisk
*disk
)
1341 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1342 ide_drive_t
*drive
= floppy
->drive
;
1345 /* do not scan partitions twice if this is a removable device */
1346 if (drive
->attach
) {
1350 ret
= !!(drive
->atapi_flags
& IDE_AFLAG_MEDIA_CHANGED
);
1351 drive
->atapi_flags
&= ~IDE_AFLAG_MEDIA_CHANGED
;
1355 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
1357 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1358 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
1362 static struct block_device_operations idefloppy_ops
= {
1363 .owner
= THIS_MODULE
,
1364 .open
= idefloppy_open
,
1365 .release
= idefloppy_release
,
1366 .ioctl
= idefloppy_ioctl
,
1367 .getgeo
= idefloppy_getgeo
,
1368 .media_changed
= idefloppy_media_changed
,
1369 .revalidate_disk
= idefloppy_revalidate_disk
1372 static int ide_floppy_probe(ide_drive_t
*drive
)
1374 idefloppy_floppy_t
*floppy
;
1377 if (!strstr("ide-floppy", drive
->driver_req
))
1380 if (drive
->media
!= ide_floppy
)
1383 if (!ide_check_atapi_device(drive
, DRV_NAME
)) {
1384 printk(KERN_ERR
"ide-floppy: %s: not supported by this version"
1385 " of ide-floppy\n", drive
->name
);
1388 floppy
= kzalloc(sizeof(idefloppy_floppy_t
), GFP_KERNEL
);
1390 printk(KERN_ERR
"ide-floppy: %s: Can't allocate a floppy"
1391 " structure\n", drive
->name
);
1395 g
= alloc_disk(1 << PARTN_BITS
);
1397 goto out_free_floppy
;
1399 ide_init_disk(g
, drive
);
1401 kref_init(&floppy
->kref
);
1403 floppy
->drive
= drive
;
1404 floppy
->driver
= &idefloppy_driver
;
1407 g
->private_data
= &floppy
->driver
;
1409 drive
->driver_data
= floppy
;
1411 idefloppy_setup(drive
, floppy
);
1413 g
->minors
= 1 << PARTN_BITS
;
1414 g
->driverfs_dev
= &drive
->gendev
;
1415 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
1416 g
->fops
= &idefloppy_ops
;
1427 static void __exit
idefloppy_exit(void)
1429 driver_unregister(&idefloppy_driver
.gen_driver
);
1432 static int __init
idefloppy_init(void)
1434 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
1435 return driver_register(&idefloppy_driver
.gen_driver
);
1438 MODULE_ALIAS("ide:*m-floppy*");
1439 module_init(idefloppy_init
);
1440 module_exit(idefloppy_exit
);
1441 MODULE_LICENSE("GPL");
1442 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");