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 (pc
->c
[0] == GPCMD_READ_10
|| pc
->c
[0] == GPCMD_WRITE_10
||
324 (pc
->rq
&& blk_pc_request(pc
->rq
)))
325 uptodate
= 1; /* FIXME */
326 else if (pc
->c
[0] == GPCMD_REQUEST_SENSE
) {
327 u8
*buf
= floppy
->pc
->buf
;
330 floppy
->sense_key
= buf
[2] & 0x0F;
331 floppy
->asc
= buf
[12];
332 floppy
->ascq
= buf
[13];
333 floppy
->progress_indication
= buf
[15] & 0x80 ?
334 (u16
)get_unaligned((u16
*)&buf
[16]) : 0x10000;
336 if (floppy
->failed_pc
)
337 debug_log("pc = %x, ", floppy
->failed_pc
->c
[0]);
339 debug_log("sense key = %x, asc = %x, ascq = %x\n",
340 floppy
->sense_key
, floppy
->asc
, floppy
->ascq
);
342 printk(KERN_ERR
"Error in REQUEST SENSE itself - "
343 "Aborting request!\n");
346 idefloppy_end_request(drive
, uptodate
, 0);
349 static void idefloppy_init_pc(struct ide_atapi_pc
*pc
)
351 memset(pc
->c
, 0, 12);
355 pc
->buf
= pc
->pc_buf
;
356 pc
->buf_size
= IDEFLOPPY_PC_BUFFER_SIZE
;
357 pc
->callback
= ide_floppy_callback
;
360 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc
*pc
)
362 idefloppy_init_pc(pc
);
363 pc
->c
[0] = GPCMD_REQUEST_SENSE
;
369 * Called when an error was detected during the last packet command. We queue a
370 * request sense packet command in the head of the request list.
372 static void idefloppy_retry_pc(ide_drive_t
*drive
)
374 struct ide_atapi_pc
*pc
;
377 (void)ide_read_error(drive
);
378 pc
= idefloppy_next_pc_storage(drive
);
379 rq
= idefloppy_next_rq_storage(drive
);
380 idefloppy_create_request_sense_cmd(pc
);
381 idefloppy_queue_pc_head(drive
, pc
, rq
);
384 /* The usual interrupt handler called during a packet command. */
385 static ide_startstop_t
idefloppy_pc_intr(ide_drive_t
*drive
)
387 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
388 ide_hwif_t
*hwif
= drive
->hwif
;
389 struct ide_atapi_pc
*pc
= floppy
->pc
;
390 struct request
*rq
= pc
->rq
;
391 xfer_func_t
*xferfunc
;
397 debug_log("Reached %s interrupt handler\n", __func__
);
399 if (pc
->flags
& PC_FLAG_DMA_IN_PROGRESS
) {
400 dma_error
= hwif
->dma_ops
->dma_end(drive
);
402 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
403 rq_data_dir(rq
) ? "write" : "read");
404 pc
->flags
|= PC_FLAG_DMA_ERROR
;
406 pc
->xferred
= pc
->req_xfer
;
407 idefloppy_update_buffers(drive
, pc
);
409 debug_log("DMA finished\n");
412 /* Clear the interrupt */
413 stat
= ide_read_status(drive
);
415 /* No more interrupts */
416 if ((stat
& DRQ_STAT
) == 0) {
417 debug_log("Packet command completed, %d bytes transferred\n",
419 pc
->flags
&= ~PC_FLAG_DMA_IN_PROGRESS
;
421 local_irq_enable_in_hardirq();
423 if ((stat
& ERR_STAT
) || (pc
->flags
& PC_FLAG_DMA_ERROR
)) {
425 debug_log("%s: I/O error\n", drive
->name
);
427 if (pc
->c
[0] == GPCMD_REQUEST_SENSE
) {
428 printk(KERN_ERR
"%s: I/O error in request sense"
429 " command\n", drive
->name
);
430 return ide_do_reset(drive
);
432 /* Retry operation */
433 idefloppy_retry_pc(drive
);
434 /* queued, but not started */
438 if (floppy
->failed_pc
== pc
)
439 floppy
->failed_pc
= NULL
;
440 /* Command finished - Call the callback function */
445 if (pc
->flags
& PC_FLAG_DMA_IN_PROGRESS
) {
446 pc
->flags
&= ~PC_FLAG_DMA_IN_PROGRESS
;
447 printk(KERN_ERR
"%s: The device wants to issue more interrupts "
448 "in DMA mode\n", drive
->name
);
450 return ide_do_reset(drive
);
453 /* Get the number of bytes to transfer */
454 bcount
= (hwif
->INB(hwif
->io_ports
.lbah_addr
) << 8) |
455 hwif
->INB(hwif
->io_ports
.lbam_addr
);
456 /* on this interrupt */
457 ireason
= hwif
->INB(hwif
->io_ports
.nsect_addr
);
460 printk(KERN_ERR
"%s: CoD != 0 in %s\n", drive
->name
, __func__
);
461 return ide_do_reset(drive
);
463 if (((ireason
& IO
) == IO
) == !!(pc
->flags
& PC_FLAG_WRITING
)) {
464 /* Hopefully, we will never get here */
465 printk(KERN_ERR
"%s: We wanted to %s, but the device wants us "
466 "to %s!\n", drive
->name
,
467 (ireason
& IO
) ? "Write" : "Read",
468 (ireason
& IO
) ? "Read" : "Write");
469 return ide_do_reset(drive
);
471 if (!(pc
->flags
& PC_FLAG_WRITING
)) {
472 /* Reading - Check that we have enough space */
473 temp
= pc
->xferred
+ bcount
;
474 if (temp
> pc
->req_xfer
) {
475 if (temp
> pc
->buf_size
) {
476 printk(KERN_ERR
"%s: The device wants to send "
477 "us more data than expected - "
480 ide_pad_transfer(drive
, 0, bcount
);
482 ide_set_handler(drive
,
488 debug_log("The device wants to send us more data than "
489 "expected - allowing transfer\n");
492 if (pc
->flags
& PC_FLAG_WRITING
)
493 xferfunc
= hwif
->output_data
;
495 xferfunc
= hwif
->input_data
;
498 xferfunc(drive
, NULL
, pc
->cur_pos
, bcount
);
500 ide_floppy_io_buffers(drive
, pc
, bcount
,
501 !!(pc
->flags
& PC_FLAG_WRITING
));
503 /* Update the current position */
504 pc
->xferred
+= bcount
;
505 pc
->cur_pos
+= bcount
;
507 /* And set the interrupt handler again */
508 ide_set_handler(drive
, &idefloppy_pc_intr
, IDEFLOPPY_WAIT_CMD
, NULL
);
513 * What we have here is a classic case of a top half / bottom half interrupt
514 * service routine. In interrupt mode, the device sends an interrupt to signal
515 * that it is ready to receive a packet. However, we need to delay about 2-3
516 * ticks before issuing the packet or we gets in trouble.
518 * So, follow carefully. transfer_pc1 is called as an interrupt (or directly).
519 * In either case, when the device says it's ready for a packet, we schedule
520 * the packet transfer to occur about 2-3 ticks later in transfer_pc2.
522 static int idefloppy_transfer_pc2(ide_drive_t
*drive
)
524 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
526 /* Send the actual packet */
527 drive
->hwif
->output_data(drive
, NULL
, floppy
->pc
->c
, 12);
529 /* Timeout for the packet command */
530 return IDEFLOPPY_WAIT_CMD
;
533 static ide_startstop_t
idefloppy_transfer_pc1(ide_drive_t
*drive
)
535 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
536 struct ide_atapi_pc
*pc
= floppy
->pc
;
537 ide_expiry_t
*expiry
;
538 unsigned int timeout
;
541 * The following delay solves a problem with ATAPI Zip 100 drives
542 * where the Busy flag was apparently being deasserted before the
543 * unit was ready to receive data. This was happening on a
544 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
545 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
546 * used until after the packet is moved in about 50 msec.
548 if (pc
->flags
& PC_FLAG_ZIP_DRIVE
) {
549 timeout
= floppy
->ticks
;
550 expiry
= &idefloppy_transfer_pc2
;
552 timeout
= IDEFLOPPY_WAIT_CMD
;
556 return ide_transfer_pc(drive
, pc
, idefloppy_pc_intr
, timeout
, expiry
);
559 static void ide_floppy_report_error(idefloppy_floppy_t
*floppy
,
560 struct ide_atapi_pc
*pc
)
562 /* supress error messages resulting from Medium not present */
563 if (floppy
->sense_key
== 0x02 &&
564 floppy
->asc
== 0x3a &&
565 floppy
->ascq
== 0x00)
568 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
569 "asc = %2x, ascq = %2x\n",
570 floppy
->drive
->name
, pc
->c
[0], floppy
->sense_key
,
571 floppy
->asc
, floppy
->ascq
);
575 static ide_startstop_t
idefloppy_issue_pc(ide_drive_t
*drive
,
576 struct ide_atapi_pc
*pc
)
578 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
580 if (floppy
->failed_pc
== NULL
&&
581 pc
->c
[0] != GPCMD_REQUEST_SENSE
)
582 floppy
->failed_pc
= pc
;
583 /* Set the current packet command */
586 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
) {
587 if (!(pc
->flags
& PC_FLAG_SUPPRESS_ERROR
))
588 ide_floppy_report_error(floppy
, pc
);
590 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
592 floppy
->failed_pc
= NULL
;
597 debug_log("Retry number - %d\n", pc
->retries
);
601 return ide_issue_pc(drive
, pc
, idefloppy_transfer_pc1
,
602 IDEFLOPPY_WAIT_CMD
, NULL
);
605 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc
*pc
, int prevent
)
607 debug_log("creating prevent removal command, prevent = %d\n", prevent
);
609 idefloppy_init_pc(pc
);
610 pc
->c
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
614 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc
*pc
)
616 idefloppy_init_pc(pc
);
617 pc
->c
[0] = GPCMD_READ_FORMAT_CAPACITIES
;
623 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc
*pc
, int b
,
626 idefloppy_init_pc(pc
);
627 pc
->c
[0] = GPCMD_FORMAT_UNIT
;
630 memset(pc
->buf
, 0, 12);
632 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
634 if (flags
& 1) /* Verify bit on... */
635 pc
->buf
[1] ^= 0x20; /* ... turn off DCRT bit */
638 put_unaligned(cpu_to_be32(b
), (unsigned int *)(&pc
->buf
[4]));
639 put_unaligned(cpu_to_be32(l
), (unsigned int *)(&pc
->buf
[8]));
641 pc
->flags
|= PC_FLAG_WRITING
;
644 /* A mode sense command is used to "sense" floppy parameters. */
645 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc
*pc
,
646 u8 page_code
, u8 type
)
648 u16 length
= 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
650 idefloppy_init_pc(pc
);
651 pc
->c
[0] = GPCMD_MODE_SENSE_10
;
653 pc
->c
[2] = page_code
+ (type
<< 6);
656 case IDEFLOPPY_CAPABILITIES_PAGE
:
659 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
663 printk(KERN_ERR
"ide-floppy: unsupported page code "
664 "in create_mode_sense_cmd\n");
666 put_unaligned(cpu_to_be16(length
), (u16
*) &pc
->c
[7]);
667 pc
->req_xfer
= length
;
670 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc
*pc
, int start
)
672 idefloppy_init_pc(pc
);
673 pc
->c
[0] = GPCMD_START_STOP_UNIT
;
677 static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc
*pc
)
679 idefloppy_init_pc(pc
);
680 pc
->c
[0] = GPCMD_TEST_UNIT_READY
;
683 static void idefloppy_create_rw_cmd(idefloppy_floppy_t
*floppy
,
684 struct ide_atapi_pc
*pc
, struct request
*rq
,
685 unsigned long sector
)
687 int block
= sector
/ floppy
->bs_factor
;
688 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
689 int cmd
= rq_data_dir(rq
);
691 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
694 idefloppy_init_pc(pc
);
695 pc
->c
[0] = cmd
== READ
? GPCMD_READ_10
: GPCMD_WRITE_10
;
696 put_unaligned(cpu_to_be16(blocks
), (unsigned short *)&pc
->c
[7]);
697 put_unaligned(cpu_to_be32(block
), (unsigned int *) &pc
->c
[2]);
700 pc
->b_count
= cmd
== READ
? 0 : rq
->bio
->bi_size
;
701 if (rq
->cmd_flags
& REQ_RW
)
702 pc
->flags
|= PC_FLAG_WRITING
;
704 pc
->req_xfer
= pc
->buf_size
= blocks
* floppy
->block_size
;
705 pc
->flags
|= PC_FLAG_DMA_OK
;
708 static void idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
,
709 struct ide_atapi_pc
*pc
, struct request
*rq
)
711 idefloppy_init_pc(pc
);
712 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
714 pc
->b_count
= rq
->data_len
;
715 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
716 pc
->flags
|= PC_FLAG_WRITING
;
719 pc
->flags
|= PC_FLAG_DMA_OK
;
721 * possibly problematic, doesn't look like ide-floppy correctly
722 * handled scattered requests if dma fails...
724 pc
->req_xfer
= pc
->buf_size
= rq
->data_len
;
727 static ide_startstop_t
idefloppy_do_request(ide_drive_t
*drive
,
728 struct request
*rq
, sector_t block_s
)
730 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
731 struct ide_atapi_pc
*pc
;
732 unsigned long block
= (unsigned long)block_s
;
734 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
735 rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
736 rq
->cmd_type
, rq
->errors
);
737 debug_log("sector: %ld, nr_sectors: %ld, "
738 "current_nr_sectors: %d\n", (long)rq
->sector
,
739 rq
->nr_sectors
, rq
->current_nr_sectors
);
741 if (rq
->errors
>= ERROR_MAX
) {
742 if (floppy
->failed_pc
)
743 ide_floppy_report_error(floppy
, floppy
->failed_pc
);
745 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
747 idefloppy_end_request(drive
, 0, 0);
750 if (blk_fs_request(rq
)) {
751 if (((long)rq
->sector
% floppy
->bs_factor
) ||
752 (rq
->nr_sectors
% floppy
->bs_factor
)) {
753 printk(KERN_ERR
"%s: unsupported r/w request size\n",
755 idefloppy_end_request(drive
, 0, 0);
758 pc
= idefloppy_next_pc_storage(drive
);
759 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
760 } else if (blk_special_request(rq
)) {
761 pc
= (struct ide_atapi_pc
*) rq
->buffer
;
762 } else if (blk_pc_request(rq
)) {
763 pc
= idefloppy_next_pc_storage(drive
);
764 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
766 blk_dump_rq_flags(rq
,
767 "ide-floppy: unsupported command in queue");
768 idefloppy_end_request(drive
, 0, 0);
772 if (floppy
->flags
& IDEFLOPPY_FLAG_DRQ_INTERRUPT
)
773 pc
->flags
|= PC_FLAG_DRQ_INTERRUPT
;
775 if (floppy
->flags
& IDEFLOPPY_FLAG_ZIP_DRIVE
)
776 pc
->flags
|= PC_FLAG_ZIP_DRIVE
;
780 return idefloppy_issue_pc(drive
, pc
);
784 * Add a special packet command request to the tail of the request queue,
785 * and wait for it to be serviced.
787 static int idefloppy_queue_pc_tail(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
)
789 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
793 rq
= blk_get_request(drive
->queue
, READ
, __GFP_WAIT
);
794 rq
->buffer
= (char *) pc
;
795 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
796 error
= blk_execute_rq(drive
->queue
, floppy
->disk
, rq
, 0);
803 * Look at the flexible disk page parameters. We ignore the CHS capacity
804 * parameters and use the LBA parameters instead.
806 static int ide_floppy_get_flexible_disk_page(ide_drive_t
*drive
)
808 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
809 struct ide_atapi_pc pc
;
811 int capacity
, lba_capacity
;
812 u16 transfer_rate
, sector_size
, cyls
, rpm
;
815 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
,
818 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
819 printk(KERN_ERR
"ide-floppy: Can't get flexible disk page"
823 floppy
->wp
= !!(pc
.buf
[3] & 0x80);
824 set_disk_ro(floppy
->disk
, floppy
->wp
);
827 transfer_rate
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 2]);
828 sector_size
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 6]);
829 cyls
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 8]);
830 rpm
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 28]);
831 heads
= pc
.buf
[8 + 4];
832 sectors
= pc
.buf
[8 + 5];
834 capacity
= cyls
* heads
* sectors
* sector_size
;
836 if (memcmp(page
, &floppy
->flexible_disk_page
, 32))
837 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
838 "%d sector size, %d rpm\n",
839 drive
->name
, capacity
/ 1024, cyls
, heads
,
840 sectors
, transfer_rate
/ 8, sector_size
, rpm
);
842 memcpy(&floppy
->flexible_disk_page
, page
, 32);
843 drive
->bios_cyl
= cyls
;
844 drive
->bios_head
= heads
;
845 drive
->bios_sect
= sectors
;
846 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
848 if (capacity
< lba_capacity
) {
849 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
850 "bytes, but the drive only handles %d\n",
851 drive
->name
, lba_capacity
, capacity
);
852 floppy
->blocks
= floppy
->block_size
?
853 capacity
/ floppy
->block_size
: 0;
858 static int idefloppy_get_sfrp_bit(ide_drive_t
*drive
)
860 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
861 struct ide_atapi_pc pc
;
864 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_CAPABILITIES_PAGE
,
867 pc
.flags
|= PC_FLAG_SUPPRESS_ERROR
;
868 if (idefloppy_queue_pc_tail(drive
, &pc
))
871 floppy
->srfp
= pc
.buf
[8 + 2] & 0x40;
876 * Determine if a media is present in the floppy drive, and if so, its LBA
879 static int ide_floppy_get_capacity(ide_drive_t
*drive
)
881 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
882 struct ide_atapi_pc pc
;
884 u8 header_len
, desc_cnt
;
885 int i
, rc
= 1, blocks
, length
;
888 drive
->bios_head
= drive
->bios_sect
= 0;
890 floppy
->bs_factor
= 1;
891 set_capacity(floppy
->disk
, 0);
893 idefloppy_create_read_capacity_cmd(&pc
);
894 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
895 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
898 header_len
= pc
.buf
[3];
899 cap_desc
= &pc
.buf
[4];
900 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
902 for (i
= 0; i
< desc_cnt
; i
++) {
903 unsigned int desc_start
= 4 + i
*8;
905 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
906 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
908 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
909 i
, blocks
* length
/ 1024, blocks
, length
);
914 * the code below is valid only for the 1st descriptor, ie i=0
917 switch (pc
.buf
[desc_start
+ 4] & 0x03) {
918 /* Clik! drive returns this instead of CAPACITY_CURRENT */
919 case CAPACITY_UNFORMATTED
:
920 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
922 * If it is not a clik drive, break out
923 * (maintains previous driver behaviour)
926 case CAPACITY_CURRENT
:
927 /* Normal Zip/LS-120 disks */
928 if (memcmp(cap_desc
, &floppy
->cap_desc
, 8))
929 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
930 "sector size\n", drive
->name
,
931 blocks
* length
/ 1024, blocks
, length
);
932 memcpy(&floppy
->cap_desc
, cap_desc
, 8);
934 if (!length
|| length
% 512) {
935 printk(KERN_NOTICE
"%s: %d bytes block size "
936 "not supported\n", drive
->name
, length
);
938 floppy
->blocks
= blocks
;
939 floppy
->block_size
= length
;
940 floppy
->bs_factor
= length
/ 512;
941 if (floppy
->bs_factor
!= 1)
942 printk(KERN_NOTICE
"%s: warning: non "
943 "512 bytes block size not "
949 case CAPACITY_NO_CARTRIDGE
:
951 * This is a KERN_ERR so it appears on screen
952 * for the user to see
954 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
956 case CAPACITY_INVALID
:
957 printk(KERN_ERR
"%s: Invalid capacity for disk "
958 "in drive\n", drive
->name
);
961 debug_log("Descriptor 0 Code: %d\n",
962 pc
.buf
[desc_start
+ 4] & 0x03);
965 /* Clik! disk does not support get_flexible_disk_page */
966 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
967 (void) ide_floppy_get_flexible_disk_page(drive
);
969 set_capacity(floppy
->disk
, floppy
->blocks
* floppy
->bs_factor
);
974 * Obtain the list of formattable capacities.
975 * Very similar to ide_floppy_get_capacity, except that we push the capacity
976 * descriptors to userland, instead of our own structures.
978 * Userland gives us the following structure:
980 * struct idefloppy_format_capacities {
988 * userland initializes nformats to the number of allocated formats[] records.
989 * On exit we set nformats to the number of records we've actually initialized.
992 static int ide_floppy_get_format_capacities(ide_drive_t
*drive
, int __user
*arg
)
994 struct ide_atapi_pc pc
;
995 u8 header_len
, desc_cnt
;
996 int i
, blocks
, length
, u_array_size
, u_index
;
999 if (get_user(u_array_size
, arg
))
1002 if (u_array_size
<= 0)
1005 idefloppy_create_read_capacity_cmd(&pc
);
1006 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1007 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
1010 header_len
= pc
.buf
[3];
1011 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
1017 * We always skip the first capacity descriptor. That's the current
1018 * capacity. We are interested in the remaining descriptors, the
1019 * formattable capacities.
1021 for (i
= 1; i
< desc_cnt
; i
++) {
1022 unsigned int desc_start
= 4 + i
*8;
1024 if (u_index
>= u_array_size
)
1025 break; /* User-supplied buffer too small */
1027 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
1028 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
1030 if (put_user(blocks
, argp
))
1034 if (put_user(length
, argp
))
1041 if (put_user(u_index
, arg
))
1047 * Get ATAPI_FORMAT_UNIT progress indication.
1049 * Userland gives a pointer to an int. The int is set to a progress
1050 * indicator 0-65536, with 65536=100%.
1052 * If the drive does not support format progress indication, we just check
1053 * the dsc bit, and return either 0 or 65536.
1056 static int idefloppy_get_format_progress(ide_drive_t
*drive
, int __user
*arg
)
1058 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1059 struct ide_atapi_pc pc
;
1060 int progress_indication
= 0x10000;
1063 idefloppy_create_request_sense_cmd(&pc
);
1064 if (idefloppy_queue_pc_tail(drive
, &pc
))
1067 if (floppy
->sense_key
== 2 &&
1070 progress_indication
= floppy
->progress_indication
;
1072 /* Else assume format_unit has finished, and we're at 0x10000 */
1074 unsigned long flags
;
1077 local_irq_save(flags
);
1078 stat
= ide_read_status(drive
);
1079 local_irq_restore(flags
);
1081 progress_indication
= ((stat
& SEEK_STAT
) == 0) ? 0 : 0x10000;
1083 if (put_user(progress_indication
, arg
))
1089 static sector_t
idefloppy_capacity(ide_drive_t
*drive
)
1091 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1092 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
1098 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
1101 static int idefloppy_identify_device(ide_drive_t
*drive
, struct hd_driveid
*id
)
1104 u8 device_type
, protocol
, removable
, drq_type
, packet_size
;
1106 *((u16
*) &gcw
) = id
->config
;
1108 device_type
= gcw
[1] & 0x1F;
1109 removable
= (gcw
[0] & 0x80) >> 7;
1110 protocol
= (gcw
[1] & 0xC0) >> 6;
1111 drq_type
= (gcw
[0] & 0x60) >> 5;
1112 packet_size
= gcw
[0] & 0x03;
1115 /* kludge for Apple PowerBook internal zip */
1116 if (device_type
== 5 &&
1117 !strstr(id
->model
, "CD-ROM") && strstr(id
->model
, "ZIP"))
1122 printk(KERN_ERR
"ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1124 else if (device_type
!= 0)
1125 printk(KERN_ERR
"ide-floppy: Device type (0x%02x) is not set "
1126 "to floppy\n", device_type
);
1127 else if (!removable
)
1128 printk(KERN_ERR
"ide-floppy: The removable flag is not set\n");
1129 else if (drq_type
== 3)
1130 printk(KERN_ERR
"ide-floppy: Sorry, DRQ type (0x%02x) not "
1131 "supported\n", drq_type
);
1132 else if (packet_size
!= 0)
1133 printk(KERN_ERR
"ide-floppy: Packet size (0x%02x) is not 12 "
1134 "bytes\n", packet_size
);
1140 #ifdef CONFIG_IDE_PROC_FS
1141 static void idefloppy_add_settings(ide_drive_t
*drive
)
1143 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1145 ide_add_setting(drive
, "bios_cyl", SETTING_RW
, TYPE_INT
, 0, 1023, 1, 1,
1146 &drive
->bios_cyl
, NULL
);
1147 ide_add_setting(drive
, "bios_head", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1148 &drive
->bios_head
, NULL
);
1149 ide_add_setting(drive
, "bios_sect", SETTING_RW
, TYPE_BYTE
, 0, 63, 1, 1,
1150 &drive
->bios_sect
, NULL
);
1151 ide_add_setting(drive
, "ticks", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1152 &floppy
->ticks
, NULL
);
1155 static inline void idefloppy_add_settings(ide_drive_t
*drive
) { ; }
1158 static void idefloppy_setup(ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
1162 *((u16
*) &gcw
) = drive
->id
->config
;
1163 floppy
->pc
= floppy
->pc_stack
;
1165 if (((gcw
[0] & 0x60) >> 5) == 1)
1166 floppy
->flags
|= IDEFLOPPY_FLAG_DRQ_INTERRUPT
;
1168 * We used to check revisions here. At this point however I'm giving up.
1169 * Just assume they are all broken, its easier.
1171 * The actual reason for the workarounds was likely a driver bug after
1172 * all rather than a firmware bug, and the workaround below used to hide
1173 * it. It should be fixed as of version 1.9, but to be on the safe side
1174 * we'll leave the limitation below for the 2.2.x tree.
1176 if (!strncmp(drive
->id
->model
, "IOMEGA ZIP 100 ATAPI", 20)) {
1177 floppy
->flags
|= IDEFLOPPY_FLAG_ZIP_DRIVE
;
1178 /* This value will be visible in the /proc/ide/hdx/settings */
1179 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
1180 blk_queue_max_sectors(drive
->queue
, 64);
1184 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1185 * nasty clicking noises without it, so please don't remove this.
1187 if (strncmp(drive
->id
->model
, "IOMEGA Clik!", 11) == 0) {
1188 blk_queue_max_sectors(drive
->queue
, 64);
1189 floppy
->flags
|= IDEFLOPPY_FLAG_CLIK_DRIVE
;
1192 (void) ide_floppy_get_capacity(drive
);
1193 idefloppy_add_settings(drive
);
1196 static void ide_floppy_remove(ide_drive_t
*drive
)
1198 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1199 struct gendisk
*g
= floppy
->disk
;
1201 ide_proc_unregister_driver(drive
, floppy
->driver
);
1205 ide_floppy_put(floppy
);
1208 static void idefloppy_cleanup_obj(struct kref
*kref
)
1210 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
1211 ide_drive_t
*drive
= floppy
->drive
;
1212 struct gendisk
*g
= floppy
->disk
;
1214 drive
->driver_data
= NULL
;
1215 g
->private_data
= NULL
;
1220 #ifdef CONFIG_IDE_PROC_FS
1221 static int proc_idefloppy_read_capacity(char *page
, char **start
, off_t off
,
1222 int count
, int *eof
, void *data
)
1224 ide_drive_t
*drive
= (ide_drive_t
*)data
;
1227 len
= sprintf(page
, "%llu\n", (long long)idefloppy_capacity(drive
));
1228 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1231 static ide_proc_entry_t idefloppy_proc
[] = {
1232 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
1233 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
1234 { NULL
, 0, NULL
, NULL
}
1236 #endif /* CONFIG_IDE_PROC_FS */
1238 static int ide_floppy_probe(ide_drive_t
*);
1240 static ide_driver_t idefloppy_driver
= {
1242 .owner
= THIS_MODULE
,
1243 .name
= "ide-floppy",
1244 .bus
= &ide_bus_type
,
1246 .probe
= ide_floppy_probe
,
1247 .remove
= ide_floppy_remove
,
1248 .version
= IDEFLOPPY_VERSION
,
1249 .media
= ide_floppy
,
1250 .supports_dsc_overlap
= 0,
1251 .do_request
= idefloppy_do_request
,
1252 .end_request
= idefloppy_end_request
,
1253 .error
= __ide_error
,
1254 .abort
= __ide_abort
,
1255 #ifdef CONFIG_IDE_PROC_FS
1256 .proc
= idefloppy_proc
,
1260 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
1262 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1263 struct ide_floppy_obj
*floppy
;
1265 struct ide_atapi_pc pc
;
1268 debug_log("Reached %s\n", __func__
);
1270 floppy
= ide_floppy_get(disk
);
1274 drive
= floppy
->drive
;
1278 if (floppy
->openers
== 1) {
1279 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1282 idefloppy_create_test_unit_ready_cmd(&pc
);
1283 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1284 idefloppy_create_start_stop_cmd(&pc
, 1);
1285 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1288 if (ide_floppy_get_capacity(drive
)
1289 && (filp
->f_flags
& O_NDELAY
) == 0
1291 * Allow O_NDELAY to open a drive without a disk, or with an
1292 * unreadable disk, so that we can get the format capacity
1293 * of the drive or begin the format - Sam
1297 goto out_put_floppy
;
1300 if (floppy
->wp
&& (filp
->f_mode
& 2)) {
1302 goto out_put_floppy
;
1304 floppy
->flags
|= IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1305 /* IOMEGA Clik! drives do not support lock/unlock commands */
1306 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1307 idefloppy_create_prevent_cmd(&pc
, 1);
1308 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1310 check_disk_change(inode
->i_bdev
);
1311 } else if (floppy
->flags
& IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
) {
1313 goto out_put_floppy
;
1319 ide_floppy_put(floppy
);
1323 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
1325 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1326 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1327 ide_drive_t
*drive
= floppy
->drive
;
1328 struct ide_atapi_pc pc
;
1330 debug_log("Reached %s\n", __func__
);
1332 if (floppy
->openers
== 1) {
1333 /* IOMEGA Clik! drives do not support lock/unlock commands */
1334 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1335 idefloppy_create_prevent_cmd(&pc
, 0);
1336 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1339 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1344 ide_floppy_put(floppy
);
1349 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1351 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1352 ide_drive_t
*drive
= floppy
->drive
;
1354 geo
->heads
= drive
->bios_head
;
1355 geo
->sectors
= drive
->bios_sect
;
1356 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
1360 static int ide_floppy_lockdoor(idefloppy_floppy_t
*floppy
,
1361 struct ide_atapi_pc
*pc
, unsigned long arg
, unsigned int cmd
)
1363 if (floppy
->openers
> 1)
1366 /* The IOMEGA Clik! Drive doesn't support this command -
1367 * no room for an eject mechanism */
1368 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1369 int prevent
= arg
? 1 : 0;
1371 if (cmd
== CDROMEJECT
)
1374 idefloppy_create_prevent_cmd(pc
, prevent
);
1375 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1378 if (cmd
== CDROMEJECT
) {
1379 idefloppy_create_start_stop_cmd(pc
, 2);
1380 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1386 static int ide_floppy_format_unit(idefloppy_floppy_t
*floppy
,
1389 int blocks
, length
, flags
, err
= 0;
1390 struct ide_atapi_pc pc
;
1392 if (floppy
->openers
> 1) {
1393 /* Don't format if someone is using the disk */
1394 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1398 floppy
->flags
|= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1401 * Send ATAPI_FORMAT_UNIT to the drive.
1403 * Userland gives us the following structure:
1405 * struct idefloppy_format_command {
1411 * flags is a bitmask, currently, the only defined flag is:
1413 * 0x01 - verify media after format.
1415 if (get_user(blocks
, arg
) ||
1416 get_user(length
, arg
+1) ||
1417 get_user(flags
, arg
+2)) {
1422 (void) idefloppy_get_sfrp_bit(floppy
->drive
);
1423 idefloppy_create_format_unit_cmd(&pc
, blocks
, length
, flags
);
1425 if (idefloppy_queue_pc_tail(floppy
->drive
, &pc
))
1430 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1435 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
1436 unsigned int cmd
, unsigned long arg
)
1438 struct block_device
*bdev
= inode
->i_bdev
;
1439 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1440 ide_drive_t
*drive
= floppy
->drive
;
1441 struct ide_atapi_pc pc
;
1442 void __user
*argp
= (void __user
*)arg
;
1448 case CDROM_LOCKDOOR
:
1449 return ide_floppy_lockdoor(floppy
, &pc
, arg
, cmd
);
1450 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED
:
1452 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY
:
1453 return ide_floppy_get_format_capacities(drive
, argp
);
1454 case IDEFLOPPY_IOCTL_FORMAT_START
:
1455 if (!(file
->f_mode
& 2))
1458 return ide_floppy_format_unit(floppy
, (int __user
*)arg
);
1459 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS
:
1460 return idefloppy_get_format_progress(drive
, argp
);
1464 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1465 * and CDROM_SEND_PACKET (legacy) ioctls
1467 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
1468 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
1469 bdev
->bd_disk
, cmd
, argp
);
1474 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
1479 static int idefloppy_media_changed(struct gendisk
*disk
)
1481 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1482 ide_drive_t
*drive
= floppy
->drive
;
1485 /* do not scan partitions twice if this is a removable device */
1486 if (drive
->attach
) {
1490 ret
= !!(floppy
->flags
& IDEFLOPPY_FLAG_MEDIA_CHANGED
);
1491 floppy
->flags
&= ~IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1495 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
1497 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1498 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
1502 static struct block_device_operations idefloppy_ops
= {
1503 .owner
= THIS_MODULE
,
1504 .open
= idefloppy_open
,
1505 .release
= idefloppy_release
,
1506 .ioctl
= idefloppy_ioctl
,
1507 .getgeo
= idefloppy_getgeo
,
1508 .media_changed
= idefloppy_media_changed
,
1509 .revalidate_disk
= idefloppy_revalidate_disk
1512 static int ide_floppy_probe(ide_drive_t
*drive
)
1514 idefloppy_floppy_t
*floppy
;
1517 if (!strstr("ide-floppy", drive
->driver_req
))
1519 if (!drive
->present
)
1521 if (drive
->media
!= ide_floppy
)
1523 if (!idefloppy_identify_device(drive
, drive
->id
)) {
1524 printk(KERN_ERR
"ide-floppy: %s: not supported by this version"
1525 " of ide-floppy\n", drive
->name
);
1528 floppy
= kzalloc(sizeof(idefloppy_floppy_t
), GFP_KERNEL
);
1530 printk(KERN_ERR
"ide-floppy: %s: Can't allocate a floppy"
1531 " structure\n", drive
->name
);
1535 g
= alloc_disk(1 << PARTN_BITS
);
1537 goto out_free_floppy
;
1539 ide_init_disk(g
, drive
);
1541 ide_proc_register_driver(drive
, &idefloppy_driver
);
1543 kref_init(&floppy
->kref
);
1545 floppy
->drive
= drive
;
1546 floppy
->driver
= &idefloppy_driver
;
1549 g
->private_data
= &floppy
->driver
;
1551 drive
->driver_data
= floppy
;
1553 idefloppy_setup(drive
, floppy
);
1555 g
->minors
= 1 << PARTN_BITS
;
1556 g
->driverfs_dev
= &drive
->gendev
;
1557 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
1558 g
->fops
= &idefloppy_ops
;
1569 static void __exit
idefloppy_exit(void)
1571 driver_unregister(&idefloppy_driver
.gen_driver
);
1574 static int __init
idefloppy_init(void)
1576 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
1577 return driver_register(&idefloppy_driver
.gen_driver
);
1580 MODULE_ALIAS("ide:*m-floppy*");
1581 module_init(idefloppy_init
);
1582 module_exit(idefloppy_exit
);
1583 MODULE_LICENSE("GPL");
1584 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");