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 ide_hwif_t
*hwif
= drive
->hwif
;
536 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
537 ide_expiry_t
*expiry
;
538 unsigned int timeout
;
539 ide_startstop_t startstop
;
542 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
, BUSY_STAT
, WAIT_READY
)) {
543 printk(KERN_ERR
"%s: Strange, packet command initiated yet "
544 "DRQ isn't asserted\n", drive
->name
);
547 ireason
= hwif
->INB(hwif
->io_ports
.nsect_addr
);
548 if ((ireason
& CD
) == 0 || (ireason
& IO
)) {
549 printk(KERN_ERR
"%s: (IO,CoD) != (0,1) while issuing "
550 "a packet command\n", drive
->name
);
551 return ide_do_reset(drive
);
554 * The following delay solves a problem with ATAPI Zip 100 drives
555 * where the Busy flag was apparently being deasserted before the
556 * unit was ready to receive data. This was happening on a
557 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
558 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
559 * used until after the packet is moved in about 50 msec.
561 if (floppy
->flags
& IDEFLOPPY_FLAG_ZIP_DRIVE
) {
562 timeout
= floppy
->ticks
;
563 expiry
= &idefloppy_transfer_pc2
;
565 timeout
= IDEFLOPPY_WAIT_CMD
;
569 ide_set_handler(drive
, &idefloppy_pc_intr
, timeout
, expiry
);
571 if ((floppy
->flags
& IDEFLOPPY_FLAG_ZIP_DRIVE
) == 0)
572 /* Send the actual packet */
573 hwif
->output_data(drive
, NULL
, floppy
->pc
->c
, 12);
578 static void ide_floppy_report_error(idefloppy_floppy_t
*floppy
,
579 struct ide_atapi_pc
*pc
)
581 /* supress error messages resulting from Medium not present */
582 if (floppy
->sense_key
== 0x02 &&
583 floppy
->asc
== 0x3a &&
584 floppy
->ascq
== 0x00)
587 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
588 "asc = %2x, ascq = %2x\n",
589 floppy
->drive
->name
, pc
->c
[0], floppy
->sense_key
,
590 floppy
->asc
, floppy
->ascq
);
594 static ide_startstop_t
idefloppy_issue_pc(ide_drive_t
*drive
,
595 struct ide_atapi_pc
*pc
)
597 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
598 ide_hwif_t
*hwif
= drive
->hwif
;
602 if (floppy
->failed_pc
== NULL
&&
603 pc
->c
[0] != GPCMD_REQUEST_SENSE
)
604 floppy
->failed_pc
= pc
;
605 /* Set the current packet command */
608 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
) {
609 if (!(pc
->flags
& PC_FLAG_SUPPRESS_ERROR
))
610 ide_floppy_report_error(floppy
, pc
);
612 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
614 floppy
->failed_pc
= NULL
;
619 debug_log("Retry number - %d\n", pc
->retries
);
622 /* We haven't transferred any data yet */
624 pc
->cur_pos
= pc
->buf
;
625 bcount
= min(pc
->req_xfer
, 63 * 1024);
627 if (pc
->flags
& PC_FLAG_DMA_ERROR
) {
628 pc
->flags
&= ~PC_FLAG_DMA_ERROR
;
633 if ((pc
->flags
& PC_FLAG_DMA_OK
) && drive
->using_dma
)
634 dma
= !hwif
->dma_ops
->dma_setup(drive
);
636 ide_pktcmd_tf_load(drive
, IDE_TFLAG_OUT_DEVICE
, bcount
, dma
);
639 /* Begin DMA, if necessary */
640 pc
->flags
|= PC_FLAG_DMA_IN_PROGRESS
;
641 hwif
->dma_ops
->dma_start(drive
);
644 if (floppy
->flags
& IDEFLOPPY_FLAG_DRQ_INTERRUPT
) {
645 /* Issue the packet command */
646 ide_execute_command(drive
, WIN_PACKETCMD
,
647 &idefloppy_transfer_pc1
,
652 /* Issue the packet command */
653 ide_execute_pkt_cmd(drive
);
654 return idefloppy_transfer_pc1(drive
);
658 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc
*pc
, int prevent
)
660 debug_log("creating prevent removal command, prevent = %d\n", prevent
);
662 idefloppy_init_pc(pc
);
663 pc
->c
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
667 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc
*pc
)
669 idefloppy_init_pc(pc
);
670 pc
->c
[0] = GPCMD_READ_FORMAT_CAPACITIES
;
676 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc
*pc
, int b
,
679 idefloppy_init_pc(pc
);
680 pc
->c
[0] = GPCMD_FORMAT_UNIT
;
683 memset(pc
->buf
, 0, 12);
685 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
687 if (flags
& 1) /* Verify bit on... */
688 pc
->buf
[1] ^= 0x20; /* ... turn off DCRT bit */
691 put_unaligned(cpu_to_be32(b
), (unsigned int *)(&pc
->buf
[4]));
692 put_unaligned(cpu_to_be32(l
), (unsigned int *)(&pc
->buf
[8]));
694 pc
->flags
|= PC_FLAG_WRITING
;
697 /* A mode sense command is used to "sense" floppy parameters. */
698 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc
*pc
,
699 u8 page_code
, u8 type
)
701 u16 length
= 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
703 idefloppy_init_pc(pc
);
704 pc
->c
[0] = GPCMD_MODE_SENSE_10
;
706 pc
->c
[2] = page_code
+ (type
<< 6);
709 case IDEFLOPPY_CAPABILITIES_PAGE
:
712 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
716 printk(KERN_ERR
"ide-floppy: unsupported page code "
717 "in create_mode_sense_cmd\n");
719 put_unaligned(cpu_to_be16(length
), (u16
*) &pc
->c
[7]);
720 pc
->req_xfer
= length
;
723 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc
*pc
, int start
)
725 idefloppy_init_pc(pc
);
726 pc
->c
[0] = GPCMD_START_STOP_UNIT
;
730 static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc
*pc
)
732 idefloppy_init_pc(pc
);
733 pc
->c
[0] = GPCMD_TEST_UNIT_READY
;
736 static void idefloppy_create_rw_cmd(idefloppy_floppy_t
*floppy
,
737 struct ide_atapi_pc
*pc
, struct request
*rq
,
738 unsigned long sector
)
740 int block
= sector
/ floppy
->bs_factor
;
741 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
742 int cmd
= rq_data_dir(rq
);
744 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
747 idefloppy_init_pc(pc
);
748 pc
->c
[0] = cmd
== READ
? GPCMD_READ_10
: GPCMD_WRITE_10
;
749 put_unaligned(cpu_to_be16(blocks
), (unsigned short *)&pc
->c
[7]);
750 put_unaligned(cpu_to_be32(block
), (unsigned int *) &pc
->c
[2]);
753 pc
->b_count
= cmd
== READ
? 0 : rq
->bio
->bi_size
;
754 if (rq
->cmd_flags
& REQ_RW
)
755 pc
->flags
|= PC_FLAG_WRITING
;
757 pc
->req_xfer
= pc
->buf_size
= blocks
* floppy
->block_size
;
758 pc
->flags
|= PC_FLAG_DMA_OK
;
761 static void idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
,
762 struct ide_atapi_pc
*pc
, struct request
*rq
)
764 idefloppy_init_pc(pc
);
765 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
767 pc
->b_count
= rq
->data_len
;
768 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
769 pc
->flags
|= PC_FLAG_WRITING
;
772 pc
->flags
|= PC_FLAG_DMA_OK
;
774 * possibly problematic, doesn't look like ide-floppy correctly
775 * handled scattered requests if dma fails...
777 pc
->req_xfer
= pc
->buf_size
= rq
->data_len
;
780 static ide_startstop_t
idefloppy_do_request(ide_drive_t
*drive
,
781 struct request
*rq
, sector_t block_s
)
783 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
784 struct ide_atapi_pc
*pc
;
785 unsigned long block
= (unsigned long)block_s
;
787 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
788 rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
789 rq
->cmd_type
, rq
->errors
);
790 debug_log("sector: %ld, nr_sectors: %ld, "
791 "current_nr_sectors: %d\n", (long)rq
->sector
,
792 rq
->nr_sectors
, rq
->current_nr_sectors
);
794 if (rq
->errors
>= ERROR_MAX
) {
795 if (floppy
->failed_pc
)
796 ide_floppy_report_error(floppy
, floppy
->failed_pc
);
798 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
800 idefloppy_end_request(drive
, 0, 0);
803 if (blk_fs_request(rq
)) {
804 if (((long)rq
->sector
% floppy
->bs_factor
) ||
805 (rq
->nr_sectors
% floppy
->bs_factor
)) {
806 printk(KERN_ERR
"%s: unsupported r/w request size\n",
808 idefloppy_end_request(drive
, 0, 0);
811 pc
= idefloppy_next_pc_storage(drive
);
812 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
813 } else if (blk_special_request(rq
)) {
814 pc
= (struct ide_atapi_pc
*) rq
->buffer
;
815 } else if (blk_pc_request(rq
)) {
816 pc
= idefloppy_next_pc_storage(drive
);
817 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
819 blk_dump_rq_flags(rq
,
820 "ide-floppy: unsupported command in queue");
821 idefloppy_end_request(drive
, 0, 0);
826 return idefloppy_issue_pc(drive
, pc
);
830 * Add a special packet command request to the tail of the request queue,
831 * and wait for it to be serviced.
833 static int idefloppy_queue_pc_tail(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
)
835 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
839 rq
= blk_get_request(drive
->queue
, READ
, __GFP_WAIT
);
840 rq
->buffer
= (char *) pc
;
841 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
842 error
= blk_execute_rq(drive
->queue
, floppy
->disk
, rq
, 0);
849 * Look at the flexible disk page parameters. We ignore the CHS capacity
850 * parameters and use the LBA parameters instead.
852 static int ide_floppy_get_flexible_disk_page(ide_drive_t
*drive
)
854 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
855 struct ide_atapi_pc pc
;
857 int capacity
, lba_capacity
;
858 u16 transfer_rate
, sector_size
, cyls
, rpm
;
861 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
,
864 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
865 printk(KERN_ERR
"ide-floppy: Can't get flexible disk page"
869 floppy
->wp
= !!(pc
.buf
[3] & 0x80);
870 set_disk_ro(floppy
->disk
, floppy
->wp
);
873 transfer_rate
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 2]);
874 sector_size
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 6]);
875 cyls
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 8]);
876 rpm
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 28]);
877 heads
= pc
.buf
[8 + 4];
878 sectors
= pc
.buf
[8 + 5];
880 capacity
= cyls
* heads
* sectors
* sector_size
;
882 if (memcmp(page
, &floppy
->flexible_disk_page
, 32))
883 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
884 "%d sector size, %d rpm\n",
885 drive
->name
, capacity
/ 1024, cyls
, heads
,
886 sectors
, transfer_rate
/ 8, sector_size
, rpm
);
888 memcpy(&floppy
->flexible_disk_page
, page
, 32);
889 drive
->bios_cyl
= cyls
;
890 drive
->bios_head
= heads
;
891 drive
->bios_sect
= sectors
;
892 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
894 if (capacity
< lba_capacity
) {
895 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
896 "bytes, but the drive only handles %d\n",
897 drive
->name
, lba_capacity
, capacity
);
898 floppy
->blocks
= floppy
->block_size
?
899 capacity
/ floppy
->block_size
: 0;
904 static int idefloppy_get_sfrp_bit(ide_drive_t
*drive
)
906 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
907 struct ide_atapi_pc pc
;
910 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_CAPABILITIES_PAGE
,
913 pc
.flags
|= PC_FLAG_SUPPRESS_ERROR
;
914 if (idefloppy_queue_pc_tail(drive
, &pc
))
917 floppy
->srfp
= pc
.buf
[8 + 2] & 0x40;
922 * Determine if a media is present in the floppy drive, and if so, its LBA
925 static int ide_floppy_get_capacity(ide_drive_t
*drive
)
927 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
928 struct ide_atapi_pc pc
;
930 u8 header_len
, desc_cnt
;
931 int i
, rc
= 1, blocks
, length
;
934 drive
->bios_head
= drive
->bios_sect
= 0;
936 floppy
->bs_factor
= 1;
937 set_capacity(floppy
->disk
, 0);
939 idefloppy_create_read_capacity_cmd(&pc
);
940 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
941 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
944 header_len
= pc
.buf
[3];
945 cap_desc
= &pc
.buf
[4];
946 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
948 for (i
= 0; i
< desc_cnt
; i
++) {
949 unsigned int desc_start
= 4 + i
*8;
951 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
952 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
954 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
955 i
, blocks
* length
/ 1024, blocks
, length
);
960 * the code below is valid only for the 1st descriptor, ie i=0
963 switch (pc
.buf
[desc_start
+ 4] & 0x03) {
964 /* Clik! drive returns this instead of CAPACITY_CURRENT */
965 case CAPACITY_UNFORMATTED
:
966 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
968 * If it is not a clik drive, break out
969 * (maintains previous driver behaviour)
972 case CAPACITY_CURRENT
:
973 /* Normal Zip/LS-120 disks */
974 if (memcmp(cap_desc
, &floppy
->cap_desc
, 8))
975 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
976 "sector size\n", drive
->name
,
977 blocks
* length
/ 1024, blocks
, length
);
978 memcpy(&floppy
->cap_desc
, cap_desc
, 8);
980 if (!length
|| length
% 512) {
981 printk(KERN_NOTICE
"%s: %d bytes block size "
982 "not supported\n", drive
->name
, length
);
984 floppy
->blocks
= blocks
;
985 floppy
->block_size
= length
;
986 floppy
->bs_factor
= length
/ 512;
987 if (floppy
->bs_factor
!= 1)
988 printk(KERN_NOTICE
"%s: warning: non "
989 "512 bytes block size not "
995 case CAPACITY_NO_CARTRIDGE
:
997 * This is a KERN_ERR so it appears on screen
998 * for the user to see
1000 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
1002 case CAPACITY_INVALID
:
1003 printk(KERN_ERR
"%s: Invalid capacity for disk "
1004 "in drive\n", drive
->name
);
1007 debug_log("Descriptor 0 Code: %d\n",
1008 pc
.buf
[desc_start
+ 4] & 0x03);
1011 /* Clik! disk does not support get_flexible_disk_page */
1012 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
1013 (void) ide_floppy_get_flexible_disk_page(drive
);
1015 set_capacity(floppy
->disk
, floppy
->blocks
* floppy
->bs_factor
);
1020 * Obtain the list of formattable capacities.
1021 * Very similar to ide_floppy_get_capacity, except that we push the capacity
1022 * descriptors to userland, instead of our own structures.
1024 * Userland gives us the following structure:
1026 * struct idefloppy_format_capacities {
1034 * userland initializes nformats to the number of allocated formats[] records.
1035 * On exit we set nformats to the number of records we've actually initialized.
1038 static int ide_floppy_get_format_capacities(ide_drive_t
*drive
, int __user
*arg
)
1040 struct ide_atapi_pc pc
;
1041 u8 header_len
, desc_cnt
;
1042 int i
, blocks
, length
, u_array_size
, u_index
;
1045 if (get_user(u_array_size
, arg
))
1048 if (u_array_size
<= 0)
1051 idefloppy_create_read_capacity_cmd(&pc
);
1052 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1053 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
1056 header_len
= pc
.buf
[3];
1057 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
1063 * We always skip the first capacity descriptor. That's the current
1064 * capacity. We are interested in the remaining descriptors, the
1065 * formattable capacities.
1067 for (i
= 1; i
< desc_cnt
; i
++) {
1068 unsigned int desc_start
= 4 + i
*8;
1070 if (u_index
>= u_array_size
)
1071 break; /* User-supplied buffer too small */
1073 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
1074 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
1076 if (put_user(blocks
, argp
))
1080 if (put_user(length
, argp
))
1087 if (put_user(u_index
, arg
))
1093 * Get ATAPI_FORMAT_UNIT progress indication.
1095 * Userland gives a pointer to an int. The int is set to a progress
1096 * indicator 0-65536, with 65536=100%.
1098 * If the drive does not support format progress indication, we just check
1099 * the dsc bit, and return either 0 or 65536.
1102 static int idefloppy_get_format_progress(ide_drive_t
*drive
, int __user
*arg
)
1104 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1105 struct ide_atapi_pc pc
;
1106 int progress_indication
= 0x10000;
1109 idefloppy_create_request_sense_cmd(&pc
);
1110 if (idefloppy_queue_pc_tail(drive
, &pc
))
1113 if (floppy
->sense_key
== 2 &&
1116 progress_indication
= floppy
->progress_indication
;
1118 /* Else assume format_unit has finished, and we're at 0x10000 */
1120 unsigned long flags
;
1123 local_irq_save(flags
);
1124 stat
= ide_read_status(drive
);
1125 local_irq_restore(flags
);
1127 progress_indication
= ((stat
& SEEK_STAT
) == 0) ? 0 : 0x10000;
1129 if (put_user(progress_indication
, arg
))
1135 static sector_t
idefloppy_capacity(ide_drive_t
*drive
)
1137 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1138 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
1144 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
1147 static int idefloppy_identify_device(ide_drive_t
*drive
, struct hd_driveid
*id
)
1150 u8 device_type
, protocol
, removable
, drq_type
, packet_size
;
1152 *((u16
*) &gcw
) = id
->config
;
1154 device_type
= gcw
[1] & 0x1F;
1155 removable
= (gcw
[0] & 0x80) >> 7;
1156 protocol
= (gcw
[1] & 0xC0) >> 6;
1157 drq_type
= (gcw
[0] & 0x60) >> 5;
1158 packet_size
= gcw
[0] & 0x03;
1161 /* kludge for Apple PowerBook internal zip */
1162 if (device_type
== 5 &&
1163 !strstr(id
->model
, "CD-ROM") && strstr(id
->model
, "ZIP"))
1168 printk(KERN_ERR
"ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1170 else if (device_type
!= 0)
1171 printk(KERN_ERR
"ide-floppy: Device type (0x%02x) is not set "
1172 "to floppy\n", device_type
);
1173 else if (!removable
)
1174 printk(KERN_ERR
"ide-floppy: The removable flag is not set\n");
1175 else if (drq_type
== 3)
1176 printk(KERN_ERR
"ide-floppy: Sorry, DRQ type (0x%02x) not "
1177 "supported\n", drq_type
);
1178 else if (packet_size
!= 0)
1179 printk(KERN_ERR
"ide-floppy: Packet size (0x%02x) is not 12 "
1180 "bytes\n", packet_size
);
1186 #ifdef CONFIG_IDE_PROC_FS
1187 static void idefloppy_add_settings(ide_drive_t
*drive
)
1189 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1191 ide_add_setting(drive
, "bios_cyl", SETTING_RW
, TYPE_INT
, 0, 1023, 1, 1,
1192 &drive
->bios_cyl
, NULL
);
1193 ide_add_setting(drive
, "bios_head", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1194 &drive
->bios_head
, NULL
);
1195 ide_add_setting(drive
, "bios_sect", SETTING_RW
, TYPE_BYTE
, 0, 63, 1, 1,
1196 &drive
->bios_sect
, NULL
);
1197 ide_add_setting(drive
, "ticks", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1198 &floppy
->ticks
, NULL
);
1201 static inline void idefloppy_add_settings(ide_drive_t
*drive
) { ; }
1204 static void idefloppy_setup(ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
1208 *((u16
*) &gcw
) = drive
->id
->config
;
1209 floppy
->pc
= floppy
->pc_stack
;
1211 if (((gcw
[0] & 0x60) >> 5) == 1)
1212 floppy
->flags
|= IDEFLOPPY_FLAG_DRQ_INTERRUPT
;
1214 * We used to check revisions here. At this point however I'm giving up.
1215 * Just assume they are all broken, its easier.
1217 * The actual reason for the workarounds was likely a driver bug after
1218 * all rather than a firmware bug, and the workaround below used to hide
1219 * it. It should be fixed as of version 1.9, but to be on the safe side
1220 * we'll leave the limitation below for the 2.2.x tree.
1222 if (!strncmp(drive
->id
->model
, "IOMEGA ZIP 100 ATAPI", 20)) {
1223 floppy
->flags
|= IDEFLOPPY_FLAG_ZIP_DRIVE
;
1224 /* This value will be visible in the /proc/ide/hdx/settings */
1225 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
1226 blk_queue_max_sectors(drive
->queue
, 64);
1230 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1231 * nasty clicking noises without it, so please don't remove this.
1233 if (strncmp(drive
->id
->model
, "IOMEGA Clik!", 11) == 0) {
1234 blk_queue_max_sectors(drive
->queue
, 64);
1235 floppy
->flags
|= IDEFLOPPY_FLAG_CLIK_DRIVE
;
1238 (void) ide_floppy_get_capacity(drive
);
1239 idefloppy_add_settings(drive
);
1242 static void ide_floppy_remove(ide_drive_t
*drive
)
1244 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1245 struct gendisk
*g
= floppy
->disk
;
1247 ide_proc_unregister_driver(drive
, floppy
->driver
);
1251 ide_floppy_put(floppy
);
1254 static void idefloppy_cleanup_obj(struct kref
*kref
)
1256 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
1257 ide_drive_t
*drive
= floppy
->drive
;
1258 struct gendisk
*g
= floppy
->disk
;
1260 drive
->driver_data
= NULL
;
1261 g
->private_data
= NULL
;
1266 #ifdef CONFIG_IDE_PROC_FS
1267 static int proc_idefloppy_read_capacity(char *page
, char **start
, off_t off
,
1268 int count
, int *eof
, void *data
)
1270 ide_drive_t
*drive
= (ide_drive_t
*)data
;
1273 len
= sprintf(page
, "%llu\n", (long long)idefloppy_capacity(drive
));
1274 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1277 static ide_proc_entry_t idefloppy_proc
[] = {
1278 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
1279 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
1280 { NULL
, 0, NULL
, NULL
}
1282 #endif /* CONFIG_IDE_PROC_FS */
1284 static int ide_floppy_probe(ide_drive_t
*);
1286 static ide_driver_t idefloppy_driver
= {
1288 .owner
= THIS_MODULE
,
1289 .name
= "ide-floppy",
1290 .bus
= &ide_bus_type
,
1292 .probe
= ide_floppy_probe
,
1293 .remove
= ide_floppy_remove
,
1294 .version
= IDEFLOPPY_VERSION
,
1295 .media
= ide_floppy
,
1296 .supports_dsc_overlap
= 0,
1297 .do_request
= idefloppy_do_request
,
1298 .end_request
= idefloppy_end_request
,
1299 .error
= __ide_error
,
1300 .abort
= __ide_abort
,
1301 #ifdef CONFIG_IDE_PROC_FS
1302 .proc
= idefloppy_proc
,
1306 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
1308 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1309 struct ide_floppy_obj
*floppy
;
1311 struct ide_atapi_pc pc
;
1314 debug_log("Reached %s\n", __func__
);
1316 floppy
= ide_floppy_get(disk
);
1320 drive
= floppy
->drive
;
1324 if (floppy
->openers
== 1) {
1325 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1328 idefloppy_create_test_unit_ready_cmd(&pc
);
1329 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1330 idefloppy_create_start_stop_cmd(&pc
, 1);
1331 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1334 if (ide_floppy_get_capacity(drive
)
1335 && (filp
->f_flags
& O_NDELAY
) == 0
1337 * Allow O_NDELAY to open a drive without a disk, or with an
1338 * unreadable disk, so that we can get the format capacity
1339 * of the drive or begin the format - Sam
1343 goto out_put_floppy
;
1346 if (floppy
->wp
&& (filp
->f_mode
& 2)) {
1348 goto out_put_floppy
;
1350 floppy
->flags
|= IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1351 /* IOMEGA Clik! drives do not support lock/unlock commands */
1352 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1353 idefloppy_create_prevent_cmd(&pc
, 1);
1354 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1356 check_disk_change(inode
->i_bdev
);
1357 } else if (floppy
->flags
& IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
) {
1359 goto out_put_floppy
;
1365 ide_floppy_put(floppy
);
1369 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
1371 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1372 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1373 ide_drive_t
*drive
= floppy
->drive
;
1374 struct ide_atapi_pc pc
;
1376 debug_log("Reached %s\n", __func__
);
1378 if (floppy
->openers
== 1) {
1379 /* IOMEGA Clik! drives do not support lock/unlock commands */
1380 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1381 idefloppy_create_prevent_cmd(&pc
, 0);
1382 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1385 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1390 ide_floppy_put(floppy
);
1395 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1397 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1398 ide_drive_t
*drive
= floppy
->drive
;
1400 geo
->heads
= drive
->bios_head
;
1401 geo
->sectors
= drive
->bios_sect
;
1402 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
1406 static int ide_floppy_lockdoor(idefloppy_floppy_t
*floppy
,
1407 struct ide_atapi_pc
*pc
, unsigned long arg
, unsigned int cmd
)
1409 if (floppy
->openers
> 1)
1412 /* The IOMEGA Clik! Drive doesn't support this command -
1413 * no room for an eject mechanism */
1414 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1415 int prevent
= arg
? 1 : 0;
1417 if (cmd
== CDROMEJECT
)
1420 idefloppy_create_prevent_cmd(pc
, prevent
);
1421 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1424 if (cmd
== CDROMEJECT
) {
1425 idefloppy_create_start_stop_cmd(pc
, 2);
1426 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1432 static int ide_floppy_format_unit(idefloppy_floppy_t
*floppy
,
1435 int blocks
, length
, flags
, err
= 0;
1436 struct ide_atapi_pc pc
;
1438 if (floppy
->openers
> 1) {
1439 /* Don't format if someone is using the disk */
1440 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1444 floppy
->flags
|= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1447 * Send ATAPI_FORMAT_UNIT to the drive.
1449 * Userland gives us the following structure:
1451 * struct idefloppy_format_command {
1457 * flags is a bitmask, currently, the only defined flag is:
1459 * 0x01 - verify media after format.
1461 if (get_user(blocks
, arg
) ||
1462 get_user(length
, arg
+1) ||
1463 get_user(flags
, arg
+2)) {
1468 (void) idefloppy_get_sfrp_bit(floppy
->drive
);
1469 idefloppy_create_format_unit_cmd(&pc
, blocks
, length
, flags
);
1471 if (idefloppy_queue_pc_tail(floppy
->drive
, &pc
))
1476 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1481 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
1482 unsigned int cmd
, unsigned long arg
)
1484 struct block_device
*bdev
= inode
->i_bdev
;
1485 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1486 ide_drive_t
*drive
= floppy
->drive
;
1487 struct ide_atapi_pc pc
;
1488 void __user
*argp
= (void __user
*)arg
;
1494 case CDROM_LOCKDOOR
:
1495 return ide_floppy_lockdoor(floppy
, &pc
, arg
, cmd
);
1496 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED
:
1498 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY
:
1499 return ide_floppy_get_format_capacities(drive
, argp
);
1500 case IDEFLOPPY_IOCTL_FORMAT_START
:
1501 if (!(file
->f_mode
& 2))
1504 return ide_floppy_format_unit(floppy
, (int __user
*)arg
);
1505 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS
:
1506 return idefloppy_get_format_progress(drive
, argp
);
1510 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1511 * and CDROM_SEND_PACKET (legacy) ioctls
1513 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
1514 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
1515 bdev
->bd_disk
, cmd
, argp
);
1520 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
1525 static int idefloppy_media_changed(struct gendisk
*disk
)
1527 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1528 ide_drive_t
*drive
= floppy
->drive
;
1531 /* do not scan partitions twice if this is a removable device */
1532 if (drive
->attach
) {
1536 ret
= !!(floppy
->flags
& IDEFLOPPY_FLAG_MEDIA_CHANGED
);
1537 floppy
->flags
&= ~IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1541 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
1543 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1544 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
1548 static struct block_device_operations idefloppy_ops
= {
1549 .owner
= THIS_MODULE
,
1550 .open
= idefloppy_open
,
1551 .release
= idefloppy_release
,
1552 .ioctl
= idefloppy_ioctl
,
1553 .getgeo
= idefloppy_getgeo
,
1554 .media_changed
= idefloppy_media_changed
,
1555 .revalidate_disk
= idefloppy_revalidate_disk
1558 static int ide_floppy_probe(ide_drive_t
*drive
)
1560 idefloppy_floppy_t
*floppy
;
1563 if (!strstr("ide-floppy", drive
->driver_req
))
1565 if (!drive
->present
)
1567 if (drive
->media
!= ide_floppy
)
1569 if (!idefloppy_identify_device(drive
, drive
->id
)) {
1570 printk(KERN_ERR
"ide-floppy: %s: not supported by this version"
1571 " of ide-floppy\n", drive
->name
);
1575 printk(KERN_INFO
"ide-floppy: passing drive %s to ide-scsi"
1576 " emulation.\n", drive
->name
);
1579 floppy
= kzalloc(sizeof(idefloppy_floppy_t
), GFP_KERNEL
);
1581 printk(KERN_ERR
"ide-floppy: %s: Can't allocate a floppy"
1582 " structure\n", drive
->name
);
1586 g
= alloc_disk(1 << PARTN_BITS
);
1588 goto out_free_floppy
;
1590 ide_init_disk(g
, drive
);
1592 ide_proc_register_driver(drive
, &idefloppy_driver
);
1594 kref_init(&floppy
->kref
);
1596 floppy
->drive
= drive
;
1597 floppy
->driver
= &idefloppy_driver
;
1600 g
->private_data
= &floppy
->driver
;
1602 drive
->driver_data
= floppy
;
1604 idefloppy_setup(drive
, floppy
);
1606 g
->minors
= 1 << PARTN_BITS
;
1607 g
->driverfs_dev
= &drive
->gendev
;
1608 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
1609 g
->fops
= &idefloppy_ops
;
1620 static void __exit
idefloppy_exit(void)
1622 driver_unregister(&idefloppy_driver
.gen_driver
);
1625 static int __init
idefloppy_init(void)
1627 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
1628 return driver_register(&idefloppy_driver
.gen_driver
);
1631 MODULE_ALIAS("ide:*m-floppy*");
1632 module_init(idefloppy_init
);
1633 module_exit(idefloppy_exit
);
1634 MODULE_LICENSE("GPL");
1635 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");