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 /* Status/Action flags */
130 } idefloppy_floppy_t
;
132 #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
134 /* Floppy flag bits values. */
136 /* DRQ interrupt device */
137 IDEFLOPPY_FLAG_DRQ_INTERRUPT
= (1 << 0),
138 /* Media may have changed */
139 IDEFLOPPY_FLAG_MEDIA_CHANGED
= (1 << 1),
140 /* Format in progress */
141 IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
= (1 << 2),
142 /* Avoid commands not supported in Clik drive */
143 IDEFLOPPY_FLAG_CLIK_DRIVE
= (1 << 3),
144 /* Requires BH algorithm for packets */
145 IDEFLOPPY_FLAG_ZIP_DRIVE
= (1 << 4),
148 /* Defines for the MODE SENSE command */
149 #define MODE_SENSE_CURRENT 0x00
150 #define MODE_SENSE_CHANGEABLE 0x01
151 #define MODE_SENSE_DEFAULT 0x02
152 #define MODE_SENSE_SAVED 0x03
154 /* IOCTLs used in low-level formatting. */
155 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
156 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
157 #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
158 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
160 /* Error code returned in rq->errors to the higher part of the driver. */
161 #define IDEFLOPPY_ERROR_GENERAL 101
164 * Pages of the SELECT SENSE / MODE SENSE packet commands.
165 * See SFF-8070i spec.
167 #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
168 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
170 static DEFINE_MUTEX(idefloppy_ref_mutex
);
172 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
174 #define ide_floppy_g(disk) \
175 container_of((disk)->private_data, struct ide_floppy_obj, driver)
177 static struct ide_floppy_obj
*ide_floppy_get(struct gendisk
*disk
)
179 struct ide_floppy_obj
*floppy
= NULL
;
181 mutex_lock(&idefloppy_ref_mutex
);
182 floppy
= ide_floppy_g(disk
);
184 kref_get(&floppy
->kref
);
185 mutex_unlock(&idefloppy_ref_mutex
);
189 static void idefloppy_cleanup_obj(struct kref
*);
191 static void ide_floppy_put(struct ide_floppy_obj
*floppy
)
193 mutex_lock(&idefloppy_ref_mutex
);
194 kref_put(&floppy
->kref
, idefloppy_cleanup_obj
);
195 mutex_unlock(&idefloppy_ref_mutex
);
199 * Used to finish servicing a request. For read/write requests, we will call
200 * ide_end_request to pass to the next buffer.
202 static int idefloppy_end_request(ide_drive_t
*drive
, int uptodate
, int nsecs
)
204 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
205 struct request
*rq
= HWGROUP(drive
)->rq
;
208 debug_log("Reached %s\n", __func__
);
211 case 0: error
= IDEFLOPPY_ERROR_GENERAL
; break;
212 case 1: error
= 0; break;
213 default: error
= uptodate
;
216 floppy
->failed_pc
= NULL
;
217 /* Why does this happen? */
220 if (!blk_special_request(rq
)) {
221 /* our real local end request function */
222 ide_end_request(drive
, uptodate
, nsecs
);
226 /* fixme: need to move this local also */
227 ide_end_drive_cmd(drive
, 0, 0);
231 static void ide_floppy_io_buffers(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
232 unsigned int bcount
, int direction
)
234 ide_hwif_t
*hwif
= drive
->hwif
;
235 struct request
*rq
= pc
->rq
;
236 struct req_iterator iter
;
237 struct bio_vec
*bvec
;
242 rq_for_each_segment(bvec
, rq
, iter
) {
246 count
= min(bvec
->bv_len
, bcount
);
248 data
= bvec_kmap_irq(bvec
, &flags
);
250 hwif
->output_data(drive
, NULL
, data
, count
);
252 hwif
->input_data(drive
, NULL
, data
, count
);
253 bvec_kunmap_irq(data
, &flags
);
256 pc
->b_count
+= count
;
260 idefloppy_end_request(drive
, 1, done
>> 9);
263 printk(KERN_ERR
"%s: leftover data in %s, bcount == %d\n",
264 drive
->name
, __func__
, bcount
);
265 ide_pad_transfer(drive
, direction
, bcount
);
269 static void idefloppy_update_buffers(ide_drive_t
*drive
,
270 struct ide_atapi_pc
*pc
)
272 struct request
*rq
= pc
->rq
;
273 struct bio
*bio
= rq
->bio
;
275 while ((bio
= rq
->bio
) != NULL
)
276 idefloppy_end_request(drive
, 1, 0);
280 * Generate a new packet command request in front of the request queue, before
281 * the current request so that it will be processed immediately, on the next
282 * pass through the driver.
284 static void idefloppy_queue_pc_head(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
287 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
289 blk_rq_init(NULL
, rq
);
290 rq
->buffer
= (char *) pc
;
291 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
292 rq
->cmd_flags
|= REQ_PREEMPT
;
293 rq
->rq_disk
= floppy
->disk
;
294 ide_do_drive_cmd(drive
, rq
);
297 static struct ide_atapi_pc
*idefloppy_next_pc_storage(ide_drive_t
*drive
)
299 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
301 if (floppy
->pc_stack_index
== IDEFLOPPY_PC_STACK
)
302 floppy
->pc_stack_index
= 0;
303 return (&floppy
->pc_stack
[floppy
->pc_stack_index
++]);
306 static struct request
*idefloppy_next_rq_storage(ide_drive_t
*drive
)
308 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
310 if (floppy
->rq_stack_index
== IDEFLOPPY_PC_STACK
)
311 floppy
->rq_stack_index
= 0;
312 return (&floppy
->rq_stack
[floppy
->rq_stack_index
++]);
315 static void ide_floppy_callback(ide_drive_t
*drive
)
317 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
318 struct ide_atapi_pc
*pc
= floppy
->pc
;
319 int uptodate
= pc
->error
? 0 : 1;
321 debug_log("Reached %s\n", __func__
);
323 if (floppy
->failed_pc
== pc
)
324 floppy
->failed_pc
= NULL
;
326 if (pc
->c
[0] == GPCMD_READ_10
|| pc
->c
[0] == GPCMD_WRITE_10
||
327 (pc
->rq
&& blk_pc_request(pc
->rq
)))
328 uptodate
= 1; /* FIXME */
329 else if (pc
->c
[0] == GPCMD_REQUEST_SENSE
) {
330 u8
*buf
= floppy
->pc
->buf
;
333 floppy
->sense_key
= buf
[2] & 0x0F;
334 floppy
->asc
= buf
[12];
335 floppy
->ascq
= buf
[13];
336 floppy
->progress_indication
= buf
[15] & 0x80 ?
337 (u16
)get_unaligned((u16
*)&buf
[16]) : 0x10000;
339 if (floppy
->failed_pc
)
340 debug_log("pc = %x, ", floppy
->failed_pc
->c
[0]);
342 debug_log("sense key = %x, asc = %x, ascq = %x\n",
343 floppy
->sense_key
, floppy
->asc
, floppy
->ascq
);
345 printk(KERN_ERR
"Error in REQUEST SENSE itself - "
346 "Aborting request!\n");
349 idefloppy_end_request(drive
, uptodate
, 0);
352 static void idefloppy_init_pc(struct ide_atapi_pc
*pc
)
354 memset(pc
->c
, 0, 12);
358 pc
->buf
= pc
->pc_buf
;
359 pc
->buf_size
= IDEFLOPPY_PC_BUFFER_SIZE
;
360 pc
->callback
= ide_floppy_callback
;
363 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc
*pc
)
365 idefloppy_init_pc(pc
);
366 pc
->c
[0] = GPCMD_REQUEST_SENSE
;
372 * Called when an error was detected during the last packet command. We queue a
373 * request sense packet command in the head of the request list.
375 static void idefloppy_retry_pc(ide_drive_t
*drive
)
377 struct ide_atapi_pc
*pc
;
380 (void)ide_read_error(drive
);
381 pc
= idefloppy_next_pc_storage(drive
);
382 rq
= idefloppy_next_rq_storage(drive
);
383 idefloppy_create_request_sense_cmd(pc
);
384 idefloppy_queue_pc_head(drive
, pc
, rq
);
387 /* The usual interrupt handler called during a packet command. */
388 static ide_startstop_t
idefloppy_pc_intr(ide_drive_t
*drive
)
390 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
392 return ide_pc_intr(drive
, floppy
->pc
, idefloppy_pc_intr
,
393 IDEFLOPPY_WAIT_CMD
, NULL
, idefloppy_update_buffers
,
394 idefloppy_retry_pc
, NULL
, ide_floppy_io_buffers
);
398 * What we have here is a classic case of a top half / bottom half interrupt
399 * service routine. In interrupt mode, the device sends an interrupt to signal
400 * that it is ready to receive a packet. However, we need to delay about 2-3
401 * ticks before issuing the packet or we gets in trouble.
403 static int idefloppy_transfer_pc(ide_drive_t
*drive
)
405 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
407 /* Send the actual packet */
408 drive
->hwif
->output_data(drive
, NULL
, floppy
->pc
->c
, 12);
410 /* Timeout for the packet command */
411 return IDEFLOPPY_WAIT_CMD
;
416 * Called as an interrupt (or directly). When the device says it's ready for a
417 * packet, we schedule the packet transfer to occur about 2-3 ticks later in
420 static ide_startstop_t
idefloppy_start_pc_transfer(ide_drive_t
*drive
)
422 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
423 struct ide_atapi_pc
*pc
= floppy
->pc
;
424 ide_expiry_t
*expiry
;
425 unsigned int timeout
;
428 * The following delay solves a problem with ATAPI Zip 100 drives
429 * where the Busy flag was apparently being deasserted before the
430 * unit was ready to receive data. This was happening on a
431 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
432 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
433 * used until after the packet is moved in about 50 msec.
435 if (pc
->flags
& PC_FLAG_ZIP_DRIVE
) {
436 timeout
= floppy
->ticks
;
437 expiry
= &idefloppy_transfer_pc
;
439 timeout
= IDEFLOPPY_WAIT_CMD
;
443 return ide_transfer_pc(drive
, pc
, idefloppy_pc_intr
, timeout
, expiry
);
446 static void ide_floppy_report_error(idefloppy_floppy_t
*floppy
,
447 struct ide_atapi_pc
*pc
)
449 /* supress error messages resulting from Medium not present */
450 if (floppy
->sense_key
== 0x02 &&
451 floppy
->asc
== 0x3a &&
452 floppy
->ascq
== 0x00)
455 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
456 "asc = %2x, ascq = %2x\n",
457 floppy
->drive
->name
, pc
->c
[0], floppy
->sense_key
,
458 floppy
->asc
, floppy
->ascq
);
462 static ide_startstop_t
idefloppy_issue_pc(ide_drive_t
*drive
,
463 struct ide_atapi_pc
*pc
)
465 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
467 if (floppy
->failed_pc
== NULL
&&
468 pc
->c
[0] != GPCMD_REQUEST_SENSE
)
469 floppy
->failed_pc
= pc
;
470 /* Set the current packet command */
473 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
) {
474 if (!(pc
->flags
& PC_FLAG_SUPPRESS_ERROR
))
475 ide_floppy_report_error(floppy
, pc
);
477 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
479 floppy
->failed_pc
= NULL
;
484 debug_log("Retry number - %d\n", pc
->retries
);
488 return ide_issue_pc(drive
, pc
, idefloppy_start_pc_transfer
,
489 IDEFLOPPY_WAIT_CMD
, NULL
);
492 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc
*pc
, int prevent
)
494 debug_log("creating prevent removal command, prevent = %d\n", prevent
);
496 idefloppy_init_pc(pc
);
497 pc
->c
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
501 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc
*pc
)
503 idefloppy_init_pc(pc
);
504 pc
->c
[0] = GPCMD_READ_FORMAT_CAPACITIES
;
510 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc
*pc
, int b
,
513 idefloppy_init_pc(pc
);
514 pc
->c
[0] = GPCMD_FORMAT_UNIT
;
517 memset(pc
->buf
, 0, 12);
519 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
521 if (flags
& 1) /* Verify bit on... */
522 pc
->buf
[1] ^= 0x20; /* ... turn off DCRT bit */
525 put_unaligned(cpu_to_be32(b
), (unsigned int *)(&pc
->buf
[4]));
526 put_unaligned(cpu_to_be32(l
), (unsigned int *)(&pc
->buf
[8]));
528 pc
->flags
|= PC_FLAG_WRITING
;
531 /* A mode sense command is used to "sense" floppy parameters. */
532 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc
*pc
,
533 u8 page_code
, u8 type
)
535 u16 length
= 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
537 idefloppy_init_pc(pc
);
538 pc
->c
[0] = GPCMD_MODE_SENSE_10
;
540 pc
->c
[2] = page_code
+ (type
<< 6);
543 case IDEFLOPPY_CAPABILITIES_PAGE
:
546 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
550 printk(KERN_ERR
"ide-floppy: unsupported page code "
551 "in create_mode_sense_cmd\n");
553 put_unaligned(cpu_to_be16(length
), (u16
*) &pc
->c
[7]);
554 pc
->req_xfer
= length
;
557 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc
*pc
, int start
)
559 idefloppy_init_pc(pc
);
560 pc
->c
[0] = GPCMD_START_STOP_UNIT
;
564 static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc
*pc
)
566 idefloppy_init_pc(pc
);
567 pc
->c
[0] = GPCMD_TEST_UNIT_READY
;
570 static void idefloppy_create_rw_cmd(idefloppy_floppy_t
*floppy
,
571 struct ide_atapi_pc
*pc
, struct request
*rq
,
572 unsigned long sector
)
574 int block
= sector
/ floppy
->bs_factor
;
575 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
576 int cmd
= rq_data_dir(rq
);
578 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
581 idefloppy_init_pc(pc
);
582 pc
->c
[0] = cmd
== READ
? GPCMD_READ_10
: GPCMD_WRITE_10
;
583 put_unaligned(cpu_to_be16(blocks
), (unsigned short *)&pc
->c
[7]);
584 put_unaligned(cpu_to_be32(block
), (unsigned int *) &pc
->c
[2]);
587 pc
->b_count
= cmd
== READ
? 0 : rq
->bio
->bi_size
;
588 if (rq
->cmd_flags
& REQ_RW
)
589 pc
->flags
|= PC_FLAG_WRITING
;
591 pc
->req_xfer
= pc
->buf_size
= blocks
* floppy
->block_size
;
592 pc
->flags
|= PC_FLAG_DMA_OK
;
595 static void idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
,
596 struct ide_atapi_pc
*pc
, struct request
*rq
)
598 idefloppy_init_pc(pc
);
599 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
601 pc
->b_count
= rq
->data_len
;
602 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
603 pc
->flags
|= PC_FLAG_WRITING
;
606 pc
->flags
|= PC_FLAG_DMA_OK
;
608 * possibly problematic, doesn't look like ide-floppy correctly
609 * handled scattered requests if dma fails...
611 pc
->req_xfer
= pc
->buf_size
= rq
->data_len
;
614 static ide_startstop_t
idefloppy_do_request(ide_drive_t
*drive
,
615 struct request
*rq
, sector_t block_s
)
617 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
618 struct ide_atapi_pc
*pc
;
619 unsigned long block
= (unsigned long)block_s
;
621 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
622 rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
623 rq
->cmd_type
, rq
->errors
);
624 debug_log("sector: %ld, nr_sectors: %ld, "
625 "current_nr_sectors: %d\n", (long)rq
->sector
,
626 rq
->nr_sectors
, rq
->current_nr_sectors
);
628 if (rq
->errors
>= ERROR_MAX
) {
629 if (floppy
->failed_pc
)
630 ide_floppy_report_error(floppy
, floppy
->failed_pc
);
632 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
634 idefloppy_end_request(drive
, 0, 0);
637 if (blk_fs_request(rq
)) {
638 if (((long)rq
->sector
% floppy
->bs_factor
) ||
639 (rq
->nr_sectors
% floppy
->bs_factor
)) {
640 printk(KERN_ERR
"%s: unsupported r/w request size\n",
642 idefloppy_end_request(drive
, 0, 0);
645 pc
= idefloppy_next_pc_storage(drive
);
646 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
647 } else if (blk_special_request(rq
)) {
648 pc
= (struct ide_atapi_pc
*) rq
->buffer
;
649 } else if (blk_pc_request(rq
)) {
650 pc
= idefloppy_next_pc_storage(drive
);
651 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
653 blk_dump_rq_flags(rq
,
654 "ide-floppy: unsupported command in queue");
655 idefloppy_end_request(drive
, 0, 0);
659 if (floppy
->flags
& IDEFLOPPY_FLAG_DRQ_INTERRUPT
)
660 pc
->flags
|= PC_FLAG_DRQ_INTERRUPT
;
662 if (floppy
->flags
& IDEFLOPPY_FLAG_ZIP_DRIVE
)
663 pc
->flags
|= PC_FLAG_ZIP_DRIVE
;
667 return idefloppy_issue_pc(drive
, pc
);
671 * Add a special packet command request to the tail of the request queue,
672 * and wait for it to be serviced.
674 static int idefloppy_queue_pc_tail(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
)
676 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
680 rq
= blk_get_request(drive
->queue
, READ
, __GFP_WAIT
);
681 rq
->buffer
= (char *) pc
;
682 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
683 error
= blk_execute_rq(drive
->queue
, floppy
->disk
, rq
, 0);
690 * Look at the flexible disk page parameters. We ignore the CHS capacity
691 * parameters and use the LBA parameters instead.
693 static int ide_floppy_get_flexible_disk_page(ide_drive_t
*drive
)
695 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
696 struct ide_atapi_pc pc
;
698 int capacity
, lba_capacity
;
699 u16 transfer_rate
, sector_size
, cyls
, rpm
;
702 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
,
705 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
706 printk(KERN_ERR
"ide-floppy: Can't get flexible disk page"
710 floppy
->wp
= !!(pc
.buf
[3] & 0x80);
711 set_disk_ro(floppy
->disk
, floppy
->wp
);
714 transfer_rate
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 2]);
715 sector_size
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 6]);
716 cyls
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 8]);
717 rpm
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 28]);
718 heads
= pc
.buf
[8 + 4];
719 sectors
= pc
.buf
[8 + 5];
721 capacity
= cyls
* heads
* sectors
* sector_size
;
723 if (memcmp(page
, &floppy
->flexible_disk_page
, 32))
724 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
725 "%d sector size, %d rpm\n",
726 drive
->name
, capacity
/ 1024, cyls
, heads
,
727 sectors
, transfer_rate
/ 8, sector_size
, rpm
);
729 memcpy(&floppy
->flexible_disk_page
, page
, 32);
730 drive
->bios_cyl
= cyls
;
731 drive
->bios_head
= heads
;
732 drive
->bios_sect
= sectors
;
733 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
735 if (capacity
< lba_capacity
) {
736 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
737 "bytes, but the drive only handles %d\n",
738 drive
->name
, lba_capacity
, capacity
);
739 floppy
->blocks
= floppy
->block_size
?
740 capacity
/ floppy
->block_size
: 0;
745 static int idefloppy_get_sfrp_bit(ide_drive_t
*drive
)
747 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
748 struct ide_atapi_pc pc
;
751 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_CAPABILITIES_PAGE
,
754 pc
.flags
|= PC_FLAG_SUPPRESS_ERROR
;
755 if (idefloppy_queue_pc_tail(drive
, &pc
))
758 floppy
->srfp
= pc
.buf
[8 + 2] & 0x40;
763 * Determine if a media is present in the floppy drive, and if so, its LBA
766 static int ide_floppy_get_capacity(ide_drive_t
*drive
)
768 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
769 struct ide_atapi_pc pc
;
771 u8 header_len
, desc_cnt
;
772 int i
, rc
= 1, blocks
, length
;
775 drive
->bios_head
= drive
->bios_sect
= 0;
777 floppy
->bs_factor
= 1;
778 set_capacity(floppy
->disk
, 0);
780 idefloppy_create_read_capacity_cmd(&pc
);
781 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
782 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
785 header_len
= pc
.buf
[3];
786 cap_desc
= &pc
.buf
[4];
787 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
789 for (i
= 0; i
< desc_cnt
; i
++) {
790 unsigned int desc_start
= 4 + i
*8;
792 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
793 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
795 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
796 i
, blocks
* length
/ 1024, blocks
, length
);
801 * the code below is valid only for the 1st descriptor, ie i=0
804 switch (pc
.buf
[desc_start
+ 4] & 0x03) {
805 /* Clik! drive returns this instead of CAPACITY_CURRENT */
806 case CAPACITY_UNFORMATTED
:
807 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
809 * If it is not a clik drive, break out
810 * (maintains previous driver behaviour)
813 case CAPACITY_CURRENT
:
814 /* Normal Zip/LS-120 disks */
815 if (memcmp(cap_desc
, &floppy
->cap_desc
, 8))
816 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
817 "sector size\n", drive
->name
,
818 blocks
* length
/ 1024, blocks
, length
);
819 memcpy(&floppy
->cap_desc
, cap_desc
, 8);
821 if (!length
|| length
% 512) {
822 printk(KERN_NOTICE
"%s: %d bytes block size "
823 "not supported\n", drive
->name
, length
);
825 floppy
->blocks
= blocks
;
826 floppy
->block_size
= length
;
827 floppy
->bs_factor
= length
/ 512;
828 if (floppy
->bs_factor
!= 1)
829 printk(KERN_NOTICE
"%s: warning: non "
830 "512 bytes block size not "
836 case CAPACITY_NO_CARTRIDGE
:
838 * This is a KERN_ERR so it appears on screen
839 * for the user to see
841 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
843 case CAPACITY_INVALID
:
844 printk(KERN_ERR
"%s: Invalid capacity for disk "
845 "in drive\n", drive
->name
);
848 debug_log("Descriptor 0 Code: %d\n",
849 pc
.buf
[desc_start
+ 4] & 0x03);
852 /* Clik! disk does not support get_flexible_disk_page */
853 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
854 (void) ide_floppy_get_flexible_disk_page(drive
);
856 set_capacity(floppy
->disk
, floppy
->blocks
* floppy
->bs_factor
);
861 * Obtain the list of formattable capacities.
862 * Very similar to ide_floppy_get_capacity, except that we push the capacity
863 * descriptors to userland, instead of our own structures.
865 * Userland gives us the following structure:
867 * struct idefloppy_format_capacities {
875 * userland initializes nformats to the number of allocated formats[] records.
876 * On exit we set nformats to the number of records we've actually initialized.
879 static int ide_floppy_get_format_capacities(ide_drive_t
*drive
, int __user
*arg
)
881 struct ide_atapi_pc pc
;
882 u8 header_len
, desc_cnt
;
883 int i
, blocks
, length
, u_array_size
, u_index
;
886 if (get_user(u_array_size
, arg
))
889 if (u_array_size
<= 0)
892 idefloppy_create_read_capacity_cmd(&pc
);
893 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
894 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
897 header_len
= pc
.buf
[3];
898 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
904 * We always skip the first capacity descriptor. That's the current
905 * capacity. We are interested in the remaining descriptors, the
906 * formattable capacities.
908 for (i
= 1; i
< desc_cnt
; i
++) {
909 unsigned int desc_start
= 4 + i
*8;
911 if (u_index
>= u_array_size
)
912 break; /* User-supplied buffer too small */
914 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
915 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
917 if (put_user(blocks
, argp
))
921 if (put_user(length
, argp
))
928 if (put_user(u_index
, arg
))
934 * Get ATAPI_FORMAT_UNIT progress indication.
936 * Userland gives a pointer to an int. The int is set to a progress
937 * indicator 0-65536, with 65536=100%.
939 * If the drive does not support format progress indication, we just check
940 * the dsc bit, and return either 0 or 65536.
943 static int idefloppy_get_format_progress(ide_drive_t
*drive
, int __user
*arg
)
945 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
946 struct ide_atapi_pc pc
;
947 int progress_indication
= 0x10000;
950 idefloppy_create_request_sense_cmd(&pc
);
951 if (idefloppy_queue_pc_tail(drive
, &pc
))
954 if (floppy
->sense_key
== 2 &&
957 progress_indication
= floppy
->progress_indication
;
959 /* Else assume format_unit has finished, and we're at 0x10000 */
964 local_irq_save(flags
);
965 stat
= ide_read_status(drive
);
966 local_irq_restore(flags
);
968 progress_indication
= ((stat
& SEEK_STAT
) == 0) ? 0 : 0x10000;
970 if (put_user(progress_indication
, arg
))
976 static sector_t
idefloppy_capacity(ide_drive_t
*drive
)
978 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
979 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
985 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
988 static int idefloppy_identify_device(ide_drive_t
*drive
, struct hd_driveid
*id
)
991 u8 device_type
, protocol
, removable
, drq_type
, packet_size
;
993 *((u16
*) &gcw
) = id
->config
;
995 device_type
= gcw
[1] & 0x1F;
996 removable
= (gcw
[0] & 0x80) >> 7;
997 protocol
= (gcw
[1] & 0xC0) >> 6;
998 drq_type
= (gcw
[0] & 0x60) >> 5;
999 packet_size
= gcw
[0] & 0x03;
1002 /* kludge for Apple PowerBook internal zip */
1003 if (device_type
== 5 &&
1004 !strstr(id
->model
, "CD-ROM") && strstr(id
->model
, "ZIP"))
1009 printk(KERN_ERR
"ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1011 else if (device_type
!= 0)
1012 printk(KERN_ERR
"ide-floppy: Device type (0x%02x) is not set "
1013 "to floppy\n", device_type
);
1014 else if (!removable
)
1015 printk(KERN_ERR
"ide-floppy: The removable flag is not set\n");
1016 else if (drq_type
== 3)
1017 printk(KERN_ERR
"ide-floppy: Sorry, DRQ type (0x%02x) not "
1018 "supported\n", drq_type
);
1019 else if (packet_size
!= 0)
1020 printk(KERN_ERR
"ide-floppy: Packet size (0x%02x) is not 12 "
1021 "bytes\n", packet_size
);
1027 #ifdef CONFIG_IDE_PROC_FS
1028 static void idefloppy_add_settings(ide_drive_t
*drive
)
1030 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1032 ide_add_setting(drive
, "bios_cyl", SETTING_RW
, TYPE_INT
, 0, 1023, 1, 1,
1033 &drive
->bios_cyl
, NULL
);
1034 ide_add_setting(drive
, "bios_head", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1035 &drive
->bios_head
, NULL
);
1036 ide_add_setting(drive
, "bios_sect", SETTING_RW
, TYPE_BYTE
, 0, 63, 1, 1,
1037 &drive
->bios_sect
, NULL
);
1038 ide_add_setting(drive
, "ticks", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1039 &floppy
->ticks
, NULL
);
1042 static inline void idefloppy_add_settings(ide_drive_t
*drive
) { ; }
1045 static void idefloppy_setup(ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
1049 *((u16
*) &gcw
) = drive
->id
->config
;
1050 floppy
->pc
= floppy
->pc_stack
;
1052 if (((gcw
[0] & 0x60) >> 5) == 1)
1053 floppy
->flags
|= IDEFLOPPY_FLAG_DRQ_INTERRUPT
;
1055 * We used to check revisions here. At this point however I'm giving up.
1056 * Just assume they are all broken, its easier.
1058 * The actual reason for the workarounds was likely a driver bug after
1059 * all rather than a firmware bug, and the workaround below used to hide
1060 * it. It should be fixed as of version 1.9, but to be on the safe side
1061 * we'll leave the limitation below for the 2.2.x tree.
1063 if (!strncmp(drive
->id
->model
, "IOMEGA ZIP 100 ATAPI", 20)) {
1064 floppy
->flags
|= IDEFLOPPY_FLAG_ZIP_DRIVE
;
1065 /* This value will be visible in the /proc/ide/hdx/settings */
1066 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
1067 blk_queue_max_sectors(drive
->queue
, 64);
1071 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1072 * nasty clicking noises without it, so please don't remove this.
1074 if (strncmp(drive
->id
->model
, "IOMEGA Clik!", 11) == 0) {
1075 blk_queue_max_sectors(drive
->queue
, 64);
1076 floppy
->flags
|= IDEFLOPPY_FLAG_CLIK_DRIVE
;
1079 (void) ide_floppy_get_capacity(drive
);
1080 idefloppy_add_settings(drive
);
1083 static void ide_floppy_remove(ide_drive_t
*drive
)
1085 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1086 struct gendisk
*g
= floppy
->disk
;
1088 ide_proc_unregister_driver(drive
, floppy
->driver
);
1092 ide_floppy_put(floppy
);
1095 static void idefloppy_cleanup_obj(struct kref
*kref
)
1097 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
1098 ide_drive_t
*drive
= floppy
->drive
;
1099 struct gendisk
*g
= floppy
->disk
;
1101 drive
->driver_data
= NULL
;
1102 g
->private_data
= NULL
;
1107 #ifdef CONFIG_IDE_PROC_FS
1108 static int proc_idefloppy_read_capacity(char *page
, char **start
, off_t off
,
1109 int count
, int *eof
, void *data
)
1111 ide_drive_t
*drive
= (ide_drive_t
*)data
;
1114 len
= sprintf(page
, "%llu\n", (long long)idefloppy_capacity(drive
));
1115 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1118 static ide_proc_entry_t idefloppy_proc
[] = {
1119 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
1120 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
1121 { NULL
, 0, NULL
, NULL
}
1123 #endif /* CONFIG_IDE_PROC_FS */
1125 static int ide_floppy_probe(ide_drive_t
*);
1127 static ide_driver_t idefloppy_driver
= {
1129 .owner
= THIS_MODULE
,
1130 .name
= "ide-floppy",
1131 .bus
= &ide_bus_type
,
1133 .probe
= ide_floppy_probe
,
1134 .remove
= ide_floppy_remove
,
1135 .version
= IDEFLOPPY_VERSION
,
1136 .media
= ide_floppy
,
1137 .supports_dsc_overlap
= 0,
1138 .do_request
= idefloppy_do_request
,
1139 .end_request
= idefloppy_end_request
,
1140 .error
= __ide_error
,
1141 .abort
= __ide_abort
,
1142 #ifdef CONFIG_IDE_PROC_FS
1143 .proc
= idefloppy_proc
,
1147 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
1149 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1150 struct ide_floppy_obj
*floppy
;
1152 struct ide_atapi_pc pc
;
1155 debug_log("Reached %s\n", __func__
);
1157 floppy
= ide_floppy_get(disk
);
1161 drive
= floppy
->drive
;
1165 if (floppy
->openers
== 1) {
1166 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1169 idefloppy_create_test_unit_ready_cmd(&pc
);
1170 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1171 idefloppy_create_start_stop_cmd(&pc
, 1);
1172 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1175 if (ide_floppy_get_capacity(drive
)
1176 && (filp
->f_flags
& O_NDELAY
) == 0
1178 * Allow O_NDELAY to open a drive without a disk, or with an
1179 * unreadable disk, so that we can get the format capacity
1180 * of the drive or begin the format - Sam
1184 goto out_put_floppy
;
1187 if (floppy
->wp
&& (filp
->f_mode
& 2)) {
1189 goto out_put_floppy
;
1191 floppy
->flags
|= IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1192 /* IOMEGA Clik! drives do not support lock/unlock commands */
1193 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1194 idefloppy_create_prevent_cmd(&pc
, 1);
1195 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1197 check_disk_change(inode
->i_bdev
);
1198 } else if (floppy
->flags
& IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
) {
1200 goto out_put_floppy
;
1206 ide_floppy_put(floppy
);
1210 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
1212 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1213 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1214 ide_drive_t
*drive
= floppy
->drive
;
1215 struct ide_atapi_pc pc
;
1217 debug_log("Reached %s\n", __func__
);
1219 if (floppy
->openers
== 1) {
1220 /* IOMEGA Clik! drives do not support lock/unlock commands */
1221 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1222 idefloppy_create_prevent_cmd(&pc
, 0);
1223 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1226 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1231 ide_floppy_put(floppy
);
1236 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1238 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1239 ide_drive_t
*drive
= floppy
->drive
;
1241 geo
->heads
= drive
->bios_head
;
1242 geo
->sectors
= drive
->bios_sect
;
1243 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
1247 static int ide_floppy_lockdoor(idefloppy_floppy_t
*floppy
,
1248 struct ide_atapi_pc
*pc
, unsigned long arg
, unsigned int cmd
)
1250 if (floppy
->openers
> 1)
1253 /* The IOMEGA Clik! Drive doesn't support this command -
1254 * no room for an eject mechanism */
1255 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1256 int prevent
= arg
? 1 : 0;
1258 if (cmd
== CDROMEJECT
)
1261 idefloppy_create_prevent_cmd(pc
, prevent
);
1262 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1265 if (cmd
== CDROMEJECT
) {
1266 idefloppy_create_start_stop_cmd(pc
, 2);
1267 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1273 static int ide_floppy_format_unit(idefloppy_floppy_t
*floppy
,
1276 int blocks
, length
, flags
, err
= 0;
1277 struct ide_atapi_pc pc
;
1279 if (floppy
->openers
> 1) {
1280 /* Don't format if someone is using the disk */
1281 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1285 floppy
->flags
|= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1288 * Send ATAPI_FORMAT_UNIT to the drive.
1290 * Userland gives us the following structure:
1292 * struct idefloppy_format_command {
1298 * flags is a bitmask, currently, the only defined flag is:
1300 * 0x01 - verify media after format.
1302 if (get_user(blocks
, arg
) ||
1303 get_user(length
, arg
+1) ||
1304 get_user(flags
, arg
+2)) {
1309 (void) idefloppy_get_sfrp_bit(floppy
->drive
);
1310 idefloppy_create_format_unit_cmd(&pc
, blocks
, length
, flags
);
1312 if (idefloppy_queue_pc_tail(floppy
->drive
, &pc
))
1317 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1322 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
1323 unsigned int cmd
, unsigned long arg
)
1325 struct block_device
*bdev
= inode
->i_bdev
;
1326 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1327 ide_drive_t
*drive
= floppy
->drive
;
1328 struct ide_atapi_pc pc
;
1329 void __user
*argp
= (void __user
*)arg
;
1335 case CDROM_LOCKDOOR
:
1336 return ide_floppy_lockdoor(floppy
, &pc
, arg
, cmd
);
1337 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED
:
1339 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY
:
1340 return ide_floppy_get_format_capacities(drive
, argp
);
1341 case IDEFLOPPY_IOCTL_FORMAT_START
:
1342 if (!(file
->f_mode
& 2))
1345 return ide_floppy_format_unit(floppy
, (int __user
*)arg
);
1346 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS
:
1347 return idefloppy_get_format_progress(drive
, argp
);
1351 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1352 * and CDROM_SEND_PACKET (legacy) ioctls
1354 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
1355 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
1356 bdev
->bd_disk
, cmd
, argp
);
1361 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
1366 static int idefloppy_media_changed(struct gendisk
*disk
)
1368 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1369 ide_drive_t
*drive
= floppy
->drive
;
1372 /* do not scan partitions twice if this is a removable device */
1373 if (drive
->attach
) {
1377 ret
= !!(floppy
->flags
& IDEFLOPPY_FLAG_MEDIA_CHANGED
);
1378 floppy
->flags
&= ~IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1382 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
1384 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1385 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
1389 static struct block_device_operations idefloppy_ops
= {
1390 .owner
= THIS_MODULE
,
1391 .open
= idefloppy_open
,
1392 .release
= idefloppy_release
,
1393 .ioctl
= idefloppy_ioctl
,
1394 .getgeo
= idefloppy_getgeo
,
1395 .media_changed
= idefloppy_media_changed
,
1396 .revalidate_disk
= idefloppy_revalidate_disk
1399 static int ide_floppy_probe(ide_drive_t
*drive
)
1401 idefloppy_floppy_t
*floppy
;
1404 if (!strstr("ide-floppy", drive
->driver_req
))
1406 if (!drive
->present
)
1408 if (drive
->media
!= ide_floppy
)
1410 if (!idefloppy_identify_device(drive
, drive
->id
)) {
1411 printk(KERN_ERR
"ide-floppy: %s: not supported by this version"
1412 " of ide-floppy\n", drive
->name
);
1415 floppy
= kzalloc(sizeof(idefloppy_floppy_t
), GFP_KERNEL
);
1417 printk(KERN_ERR
"ide-floppy: %s: Can't allocate a floppy"
1418 " structure\n", drive
->name
);
1422 g
= alloc_disk(1 << PARTN_BITS
);
1424 goto out_free_floppy
;
1426 ide_init_disk(g
, drive
);
1428 ide_proc_register_driver(drive
, &idefloppy_driver
);
1430 kref_init(&floppy
->kref
);
1432 floppy
->drive
= drive
;
1433 floppy
->driver
= &idefloppy_driver
;
1436 g
->private_data
= &floppy
->driver
;
1438 drive
->driver_data
= floppy
;
1440 idefloppy_setup(drive
, floppy
);
1442 g
->minors
= 1 << PARTN_BITS
;
1443 g
->driverfs_dev
= &drive
->gendev
;
1444 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
1445 g
->fops
= &idefloppy_ops
;
1456 static void __exit
idefloppy_exit(void)
1458 driver_unregister(&idefloppy_driver
.gen_driver
);
1461 static int __init
idefloppy_init(void)
1463 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
1464 return driver_register(&idefloppy_driver
.gen_driver
);
1467 MODULE_ALIAS("ide:*m-floppy*");
1468 module_init(idefloppy_init
);
1469 module_exit(idefloppy_exit
);
1470 MODULE_LICENSE("GPL");
1471 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");