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 idefloppy_request_sense_callback(ide_drive_t
*drive
)
317 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
318 u8
*buf
= floppy
->pc
->buf
;
320 debug_log("Reached %s\n", __func__
);
322 if (!floppy
->pc
->error
) {
323 floppy
->sense_key
= buf
[2] & 0x0F;
324 floppy
->asc
= buf
[12];
325 floppy
->ascq
= buf
[13];
326 floppy
->progress_indication
= buf
[15] & 0x80 ?
327 (u16
)get_unaligned((u16
*)&buf
[16]) : 0x10000;
329 if (floppy
->failed_pc
)
330 debug_log("pc = %x, sense key = %x, asc = %x,"
332 floppy
->failed_pc
->c
[0],
337 debug_log("sense key = %x, asc = %x, ascq = %x\n",
343 idefloppy_end_request(drive
, 1, 0);
345 printk(KERN_ERR
"Error in REQUEST SENSE itself - Aborting"
347 idefloppy_end_request(drive
, 0, 0);
351 /* General packet command callback function. */
352 static void idefloppy_pc_callback(ide_drive_t
*drive
)
354 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
356 debug_log("Reached %s\n", __func__
);
358 idefloppy_end_request(drive
, floppy
->pc
->error
? 0 : 1, 0);
361 static void idefloppy_init_pc(struct ide_atapi_pc
*pc
)
363 memset(pc
->c
, 0, 12);
367 pc
->buf
= pc
->pc_buf
;
368 pc
->buf_size
= IDEFLOPPY_PC_BUFFER_SIZE
;
369 pc
->idefloppy_callback
= &idefloppy_pc_callback
;
372 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc
*pc
)
374 idefloppy_init_pc(pc
);
375 pc
->c
[0] = GPCMD_REQUEST_SENSE
;
378 pc
->idefloppy_callback
= &idefloppy_request_sense_callback
;
382 * Called when an error was detected during the last packet command. We queue a
383 * request sense packet command in the head of the request list.
385 static void idefloppy_retry_pc(ide_drive_t
*drive
)
387 struct ide_atapi_pc
*pc
;
390 (void)ide_read_error(drive
);
391 pc
= idefloppy_next_pc_storage(drive
);
392 rq
= idefloppy_next_rq_storage(drive
);
393 idefloppy_create_request_sense_cmd(pc
);
394 idefloppy_queue_pc_head(drive
, pc
, rq
);
397 /* The usual interrupt handler called during a packet command. */
398 static ide_startstop_t
idefloppy_pc_intr(ide_drive_t
*drive
)
400 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
401 ide_hwif_t
*hwif
= drive
->hwif
;
402 struct ide_atapi_pc
*pc
= floppy
->pc
;
403 struct request
*rq
= pc
->rq
;
404 xfer_func_t
*xferfunc
;
410 debug_log("Reached %s interrupt handler\n", __func__
);
412 if (pc
->flags
& PC_FLAG_DMA_IN_PROGRESS
) {
413 dma_error
= hwif
->dma_ops
->dma_end(drive
);
415 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
416 rq_data_dir(rq
) ? "write" : "read");
417 pc
->flags
|= PC_FLAG_DMA_ERROR
;
419 pc
->xferred
= pc
->req_xfer
;
420 idefloppy_update_buffers(drive
, pc
);
422 debug_log("DMA finished\n");
425 /* Clear the interrupt */
426 stat
= ide_read_status(drive
);
428 /* No more interrupts */
429 if ((stat
& DRQ_STAT
) == 0) {
430 debug_log("Packet command completed, %d bytes transferred\n",
432 pc
->flags
&= ~PC_FLAG_DMA_IN_PROGRESS
;
434 local_irq_enable_in_hardirq();
436 if ((stat
& ERR_STAT
) || (pc
->flags
& PC_FLAG_DMA_ERROR
)) {
438 debug_log("%s: I/O error\n", drive
->name
);
440 if (pc
->c
[0] == GPCMD_REQUEST_SENSE
) {
441 printk(KERN_ERR
"ide-floppy: I/O error in "
442 "request sense command\n");
443 return ide_do_reset(drive
);
445 /* Retry operation */
446 idefloppy_retry_pc(drive
);
447 /* queued, but not started */
451 if (floppy
->failed_pc
== pc
)
452 floppy
->failed_pc
= NULL
;
453 /* Command finished - Call the callback function */
454 pc
->idefloppy_callback(drive
);
458 if (pc
->flags
& PC_FLAG_DMA_IN_PROGRESS
) {
459 pc
->flags
&= ~PC_FLAG_DMA_IN_PROGRESS
;
460 printk(KERN_ERR
"ide-floppy: The floppy wants to issue "
461 "more interrupts in DMA mode\n");
463 return ide_do_reset(drive
);
466 /* Get the number of bytes to transfer */
467 bcount
= (hwif
->INB(hwif
->io_ports
.lbah_addr
) << 8) |
468 hwif
->INB(hwif
->io_ports
.lbam_addr
);
469 /* on this interrupt */
470 ireason
= hwif
->INB(hwif
->io_ports
.nsect_addr
);
473 printk(KERN_ERR
"ide-floppy: CoD != 0 in %s\n", __func__
);
474 return ide_do_reset(drive
);
476 if (((ireason
& IO
) == IO
) == !!(pc
->flags
& PC_FLAG_WRITING
)) {
477 /* Hopefully, we will never get here */
478 printk(KERN_ERR
"ide-floppy: We wanted to %s, ",
479 (ireason
& IO
) ? "Write" : "Read");
480 printk(KERN_ERR
"but the floppy wants us to %s !\n",
481 (ireason
& IO
) ? "Read" : "Write");
482 return ide_do_reset(drive
);
484 if (!(pc
->flags
& PC_FLAG_WRITING
)) {
485 /* Reading - Check that we have enough space */
486 temp
= pc
->xferred
+ bcount
;
487 if (temp
> pc
->req_xfer
) {
488 if (temp
> pc
->buf_size
) {
489 printk(KERN_ERR
"ide-floppy: The floppy wants "
490 "to send us more data than expected "
491 "- discarding data\n");
492 ide_pad_transfer(drive
, 0, bcount
);
494 ide_set_handler(drive
,
500 debug_log("The floppy wants to send us more data than"
501 " expected - allowing transfer\n");
504 if (pc
->flags
& PC_FLAG_WRITING
)
505 xferfunc
= hwif
->output_data
;
507 xferfunc
= hwif
->input_data
;
510 xferfunc(drive
, NULL
, pc
->cur_pos
, bcount
);
512 ide_floppy_io_buffers(drive
, pc
, bcount
,
513 !!(pc
->flags
& PC_FLAG_WRITING
));
515 /* Update the current position */
516 pc
->xferred
+= bcount
;
517 pc
->cur_pos
+= bcount
;
519 /* And set the interrupt handler again */
520 ide_set_handler(drive
, &idefloppy_pc_intr
, IDEFLOPPY_WAIT_CMD
, NULL
);
525 * What we have here is a classic case of a top half / bottom half interrupt
526 * service routine. In interrupt mode, the device sends an interrupt to signal
527 * that it is ready to receive a packet. However, we need to delay about 2-3
528 * ticks before issuing the packet or we gets in trouble.
530 * So, follow carefully. transfer_pc1 is called as an interrupt (or directly).
531 * In either case, when the device says it's ready for a packet, we schedule
532 * the packet transfer to occur about 2-3 ticks later in transfer_pc2.
534 static int idefloppy_transfer_pc2(ide_drive_t
*drive
)
536 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
538 /* Send the actual packet */
539 drive
->hwif
->output_data(drive
, NULL
, floppy
->pc
->c
, 12);
541 /* Timeout for the packet command */
542 return IDEFLOPPY_WAIT_CMD
;
545 static ide_startstop_t
idefloppy_transfer_pc1(ide_drive_t
*drive
)
547 ide_hwif_t
*hwif
= drive
->hwif
;
548 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
549 ide_expiry_t
*expiry
;
550 unsigned int timeout
;
551 ide_startstop_t startstop
;
554 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
, BUSY_STAT
, WAIT_READY
)) {
555 printk(KERN_ERR
"ide-floppy: Strange, packet command "
556 "initiated yet DRQ isn't asserted\n");
559 ireason
= hwif
->INB(hwif
->io_ports
.nsect_addr
);
560 if ((ireason
& CD
) == 0 || (ireason
& IO
)) {
561 printk(KERN_ERR
"ide-floppy: (IO,CoD) != (0,1) "
562 "while issuing a packet command\n");
563 return ide_do_reset(drive
);
566 * The following delay solves a problem with ATAPI Zip 100 drives
567 * where the Busy flag was apparently being deasserted before the
568 * unit was ready to receive data. This was happening on a
569 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
570 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
571 * used until after the packet is moved in about 50 msec.
573 if (floppy
->flags
& IDEFLOPPY_FLAG_ZIP_DRIVE
) {
574 timeout
= floppy
->ticks
;
575 expiry
= &idefloppy_transfer_pc2
;
577 timeout
= IDEFLOPPY_WAIT_CMD
;
581 ide_set_handler(drive
, &idefloppy_pc_intr
, timeout
, expiry
);
583 if ((floppy
->flags
& IDEFLOPPY_FLAG_ZIP_DRIVE
) == 0)
584 /* Send the actual packet */
585 hwif
->output_data(drive
, NULL
, floppy
->pc
->c
, 12);
590 static void ide_floppy_report_error(idefloppy_floppy_t
*floppy
,
591 struct ide_atapi_pc
*pc
)
593 /* supress error messages resulting from Medium not present */
594 if (floppy
->sense_key
== 0x02 &&
595 floppy
->asc
== 0x3a &&
596 floppy
->ascq
== 0x00)
599 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
600 "asc = %2x, ascq = %2x\n",
601 floppy
->drive
->name
, pc
->c
[0], floppy
->sense_key
,
602 floppy
->asc
, floppy
->ascq
);
606 static ide_startstop_t
idefloppy_issue_pc(ide_drive_t
*drive
,
607 struct ide_atapi_pc
*pc
)
609 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
610 ide_hwif_t
*hwif
= drive
->hwif
;
614 if (floppy
->failed_pc
== NULL
&&
615 pc
->c
[0] != GPCMD_REQUEST_SENSE
)
616 floppy
->failed_pc
= pc
;
617 /* Set the current packet command */
620 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
) {
621 if (!(pc
->flags
& PC_FLAG_SUPPRESS_ERROR
))
622 ide_floppy_report_error(floppy
, pc
);
624 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
626 floppy
->failed_pc
= NULL
;
627 pc
->idefloppy_callback(drive
);
631 debug_log("Retry number - %d\n", pc
->retries
);
634 /* We haven't transferred any data yet */
636 pc
->cur_pos
= pc
->buf
;
637 bcount
= min(pc
->req_xfer
, 63 * 1024);
639 if (pc
->flags
& PC_FLAG_DMA_ERROR
) {
640 pc
->flags
&= ~PC_FLAG_DMA_ERROR
;
645 if ((pc
->flags
& PC_FLAG_DMA_RECOMMENDED
) && drive
->using_dma
)
646 dma
= !hwif
->dma_ops
->dma_setup(drive
);
648 ide_pktcmd_tf_load(drive
, IDE_TFLAG_OUT_DEVICE
, bcount
, dma
);
651 /* Begin DMA, if necessary */
652 pc
->flags
|= PC_FLAG_DMA_IN_PROGRESS
;
653 hwif
->dma_ops
->dma_start(drive
);
656 if (floppy
->flags
& IDEFLOPPY_FLAG_DRQ_INTERRUPT
) {
657 /* Issue the packet command */
658 ide_execute_command(drive
, WIN_PACKETCMD
,
659 &idefloppy_transfer_pc1
,
664 /* Issue the packet command */
665 ide_execute_pkt_cmd(drive
);
666 return idefloppy_transfer_pc1(drive
);
670 static void idefloppy_rw_callback(ide_drive_t
*drive
)
672 debug_log("Reached %s\n", __func__
);
674 idefloppy_end_request(drive
, 1, 0);
678 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc
*pc
, int prevent
)
680 debug_log("creating prevent removal command, prevent = %d\n", prevent
);
682 idefloppy_init_pc(pc
);
683 pc
->c
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
687 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc
*pc
)
689 idefloppy_init_pc(pc
);
690 pc
->c
[0] = GPCMD_READ_FORMAT_CAPACITIES
;
696 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc
*pc
, int b
,
699 idefloppy_init_pc(pc
);
700 pc
->c
[0] = GPCMD_FORMAT_UNIT
;
703 memset(pc
->buf
, 0, 12);
705 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
707 if (flags
& 1) /* Verify bit on... */
708 pc
->buf
[1] ^= 0x20; /* ... turn off DCRT bit */
711 put_unaligned(cpu_to_be32(b
), (unsigned int *)(&pc
->buf
[4]));
712 put_unaligned(cpu_to_be32(l
), (unsigned int *)(&pc
->buf
[8]));
714 pc
->flags
|= PC_FLAG_WRITING
;
717 /* A mode sense command is used to "sense" floppy parameters. */
718 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc
*pc
,
719 u8 page_code
, u8 type
)
721 u16 length
= 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
723 idefloppy_init_pc(pc
);
724 pc
->c
[0] = GPCMD_MODE_SENSE_10
;
726 pc
->c
[2] = page_code
+ (type
<< 6);
729 case IDEFLOPPY_CAPABILITIES_PAGE
:
732 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
736 printk(KERN_ERR
"ide-floppy: unsupported page code "
737 "in create_mode_sense_cmd\n");
739 put_unaligned(cpu_to_be16(length
), (u16
*) &pc
->c
[7]);
740 pc
->req_xfer
= length
;
743 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc
*pc
, int start
)
745 idefloppy_init_pc(pc
);
746 pc
->c
[0] = GPCMD_START_STOP_UNIT
;
750 static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc
*pc
)
752 idefloppy_init_pc(pc
);
753 pc
->c
[0] = GPCMD_TEST_UNIT_READY
;
756 static void idefloppy_create_rw_cmd(idefloppy_floppy_t
*floppy
,
757 struct ide_atapi_pc
*pc
, struct request
*rq
,
758 unsigned long sector
)
760 int block
= sector
/ floppy
->bs_factor
;
761 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
762 int cmd
= rq_data_dir(rq
);
764 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
767 idefloppy_init_pc(pc
);
768 pc
->c
[0] = cmd
== READ
? GPCMD_READ_10
: GPCMD_WRITE_10
;
769 put_unaligned(cpu_to_be16(blocks
), (unsigned short *)&pc
->c
[7]);
770 put_unaligned(cpu_to_be32(block
), (unsigned int *) &pc
->c
[2]);
772 pc
->idefloppy_callback
= &idefloppy_rw_callback
;
774 pc
->b_count
= cmd
== READ
? 0 : rq
->bio
->bi_size
;
775 if (rq
->cmd_flags
& REQ_RW
)
776 pc
->flags
|= PC_FLAG_WRITING
;
778 pc
->req_xfer
= pc
->buf_size
= blocks
* floppy
->block_size
;
779 pc
->flags
|= PC_FLAG_DMA_RECOMMENDED
;
782 static void idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
,
783 struct ide_atapi_pc
*pc
, struct request
*rq
)
785 idefloppy_init_pc(pc
);
786 pc
->idefloppy_callback
= &idefloppy_rw_callback
;
787 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
789 pc
->b_count
= rq
->data_len
;
790 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
791 pc
->flags
|= PC_FLAG_WRITING
;
794 pc
->flags
|= PC_FLAG_DMA_RECOMMENDED
;
796 * possibly problematic, doesn't look like ide-floppy correctly
797 * handled scattered requests if dma fails...
799 pc
->req_xfer
= pc
->buf_size
= rq
->data_len
;
802 static ide_startstop_t
idefloppy_do_request(ide_drive_t
*drive
,
803 struct request
*rq
, sector_t block_s
)
805 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
806 struct ide_atapi_pc
*pc
;
807 unsigned long block
= (unsigned long)block_s
;
809 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
810 rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
811 rq
->cmd_type
, rq
->errors
);
812 debug_log("sector: %ld, nr_sectors: %ld, "
813 "current_nr_sectors: %d\n", (long)rq
->sector
,
814 rq
->nr_sectors
, rq
->current_nr_sectors
);
816 if (rq
->errors
>= ERROR_MAX
) {
817 if (floppy
->failed_pc
)
818 ide_floppy_report_error(floppy
, floppy
->failed_pc
);
820 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
822 idefloppy_end_request(drive
, 0, 0);
825 if (blk_fs_request(rq
)) {
826 if (((long)rq
->sector
% floppy
->bs_factor
) ||
827 (rq
->nr_sectors
% floppy
->bs_factor
)) {
828 printk(KERN_ERR
"%s: unsupported r/w request size\n",
830 idefloppy_end_request(drive
, 0, 0);
833 pc
= idefloppy_next_pc_storage(drive
);
834 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
835 } else if (blk_special_request(rq
)) {
836 pc
= (struct ide_atapi_pc
*) rq
->buffer
;
837 } else if (blk_pc_request(rq
)) {
838 pc
= idefloppy_next_pc_storage(drive
);
839 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
841 blk_dump_rq_flags(rq
,
842 "ide-floppy: unsupported command in queue");
843 idefloppy_end_request(drive
, 0, 0);
848 return idefloppy_issue_pc(drive
, pc
);
852 * Add a special packet command request to the tail of the request queue,
853 * and wait for it to be serviced.
855 static int idefloppy_queue_pc_tail(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
)
857 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
861 rq
= blk_get_request(drive
->queue
, READ
, __GFP_WAIT
);
862 rq
->buffer
= (char *) pc
;
863 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
864 error
= blk_execute_rq(drive
->queue
, floppy
->disk
, rq
, 0);
871 * Look at the flexible disk page parameters. We ignore the CHS capacity
872 * parameters and use the LBA parameters instead.
874 static int ide_floppy_get_flexible_disk_page(ide_drive_t
*drive
)
876 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
877 struct ide_atapi_pc pc
;
879 int capacity
, lba_capacity
;
880 u16 transfer_rate
, sector_size
, cyls
, rpm
;
883 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
,
886 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
887 printk(KERN_ERR
"ide-floppy: Can't get flexible disk page"
891 floppy
->wp
= !!(pc
.buf
[3] & 0x80);
892 set_disk_ro(floppy
->disk
, floppy
->wp
);
895 transfer_rate
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 2]);
896 sector_size
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 6]);
897 cyls
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 8]);
898 rpm
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 28]);
899 heads
= pc
.buf
[8 + 4];
900 sectors
= pc
.buf
[8 + 5];
902 capacity
= cyls
* heads
* sectors
* sector_size
;
904 if (memcmp(page
, &floppy
->flexible_disk_page
, 32))
905 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
906 "%d sector size, %d rpm\n",
907 drive
->name
, capacity
/ 1024, cyls
, heads
,
908 sectors
, transfer_rate
/ 8, sector_size
, rpm
);
910 memcpy(&floppy
->flexible_disk_page
, page
, 32);
911 drive
->bios_cyl
= cyls
;
912 drive
->bios_head
= heads
;
913 drive
->bios_sect
= sectors
;
914 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
916 if (capacity
< lba_capacity
) {
917 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
918 "bytes, but the drive only handles %d\n",
919 drive
->name
, lba_capacity
, capacity
);
920 floppy
->blocks
= floppy
->block_size
?
921 capacity
/ floppy
->block_size
: 0;
926 static int idefloppy_get_sfrp_bit(ide_drive_t
*drive
)
928 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
929 struct ide_atapi_pc pc
;
932 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_CAPABILITIES_PAGE
,
935 pc
.flags
|= PC_FLAG_SUPPRESS_ERROR
;
936 if (idefloppy_queue_pc_tail(drive
, &pc
))
939 floppy
->srfp
= pc
.buf
[8 + 2] & 0x40;
944 * Determine if a media is present in the floppy drive, and if so, its LBA
947 static int ide_floppy_get_capacity(ide_drive_t
*drive
)
949 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
950 struct ide_atapi_pc pc
;
952 u8 header_len
, desc_cnt
;
953 int i
, rc
= 1, blocks
, length
;
956 drive
->bios_head
= drive
->bios_sect
= 0;
958 floppy
->bs_factor
= 1;
959 set_capacity(floppy
->disk
, 0);
961 idefloppy_create_read_capacity_cmd(&pc
);
962 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
963 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
966 header_len
= pc
.buf
[3];
967 cap_desc
= &pc
.buf
[4];
968 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
970 for (i
= 0; i
< desc_cnt
; i
++) {
971 unsigned int desc_start
= 4 + i
*8;
973 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
974 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
976 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
977 i
, blocks
* length
/ 1024, blocks
, length
);
982 * the code below is valid only for the 1st descriptor, ie i=0
985 switch (pc
.buf
[desc_start
+ 4] & 0x03) {
986 /* Clik! drive returns this instead of CAPACITY_CURRENT */
987 case CAPACITY_UNFORMATTED
:
988 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
990 * If it is not a clik drive, break out
991 * (maintains previous driver behaviour)
994 case CAPACITY_CURRENT
:
995 /* Normal Zip/LS-120 disks */
996 if (memcmp(cap_desc
, &floppy
->cap_desc
, 8))
997 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
998 "sector size\n", drive
->name
,
999 blocks
* length
/ 1024, blocks
, length
);
1000 memcpy(&floppy
->cap_desc
, cap_desc
, 8);
1002 if (!length
|| length
% 512) {
1003 printk(KERN_NOTICE
"%s: %d bytes block size "
1004 "not supported\n", drive
->name
, length
);
1006 floppy
->blocks
= blocks
;
1007 floppy
->block_size
= length
;
1008 floppy
->bs_factor
= length
/ 512;
1009 if (floppy
->bs_factor
!= 1)
1010 printk(KERN_NOTICE
"%s: warning: non "
1011 "512 bytes block size not "
1012 "fully supported\n",
1017 case CAPACITY_NO_CARTRIDGE
:
1019 * This is a KERN_ERR so it appears on screen
1020 * for the user to see
1022 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
1024 case CAPACITY_INVALID
:
1025 printk(KERN_ERR
"%s: Invalid capacity for disk "
1026 "in drive\n", drive
->name
);
1029 debug_log("Descriptor 0 Code: %d\n",
1030 pc
.buf
[desc_start
+ 4] & 0x03);
1033 /* Clik! disk does not support get_flexible_disk_page */
1034 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
1035 (void) ide_floppy_get_flexible_disk_page(drive
);
1037 set_capacity(floppy
->disk
, floppy
->blocks
* floppy
->bs_factor
);
1042 * Obtain the list of formattable capacities.
1043 * Very similar to ide_floppy_get_capacity, except that we push the capacity
1044 * descriptors to userland, instead of our own structures.
1046 * Userland gives us the following structure:
1048 * struct idefloppy_format_capacities {
1056 * userland initializes nformats to the number of allocated formats[] records.
1057 * On exit we set nformats to the number of records we've actually initialized.
1060 static int ide_floppy_get_format_capacities(ide_drive_t
*drive
, int __user
*arg
)
1062 struct ide_atapi_pc pc
;
1063 u8 header_len
, desc_cnt
;
1064 int i
, blocks
, length
, u_array_size
, u_index
;
1067 if (get_user(u_array_size
, arg
))
1070 if (u_array_size
<= 0)
1073 idefloppy_create_read_capacity_cmd(&pc
);
1074 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1075 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
1078 header_len
= pc
.buf
[3];
1079 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
1085 * We always skip the first capacity descriptor. That's the current
1086 * capacity. We are interested in the remaining descriptors, the
1087 * formattable capacities.
1089 for (i
= 1; i
< desc_cnt
; i
++) {
1090 unsigned int desc_start
= 4 + i
*8;
1092 if (u_index
>= u_array_size
)
1093 break; /* User-supplied buffer too small */
1095 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
1096 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
1098 if (put_user(blocks
, argp
))
1102 if (put_user(length
, argp
))
1109 if (put_user(u_index
, arg
))
1115 * Get ATAPI_FORMAT_UNIT progress indication.
1117 * Userland gives a pointer to an int. The int is set to a progress
1118 * indicator 0-65536, with 65536=100%.
1120 * If the drive does not support format progress indication, we just check
1121 * the dsc bit, and return either 0 or 65536.
1124 static int idefloppy_get_format_progress(ide_drive_t
*drive
, int __user
*arg
)
1126 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1127 struct ide_atapi_pc pc
;
1128 int progress_indication
= 0x10000;
1131 idefloppy_create_request_sense_cmd(&pc
);
1132 if (idefloppy_queue_pc_tail(drive
, &pc
))
1135 if (floppy
->sense_key
== 2 &&
1138 progress_indication
= floppy
->progress_indication
;
1140 /* Else assume format_unit has finished, and we're at 0x10000 */
1142 unsigned long flags
;
1145 local_irq_save(flags
);
1146 stat
= ide_read_status(drive
);
1147 local_irq_restore(flags
);
1149 progress_indication
= ((stat
& SEEK_STAT
) == 0) ? 0 : 0x10000;
1151 if (put_user(progress_indication
, arg
))
1157 static sector_t
idefloppy_capacity(ide_drive_t
*drive
)
1159 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1160 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
1166 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
1169 static int idefloppy_identify_device(ide_drive_t
*drive
, struct hd_driveid
*id
)
1172 u8 device_type
, protocol
, removable
, drq_type
, packet_size
;
1174 *((u16
*) &gcw
) = id
->config
;
1176 device_type
= gcw
[1] & 0x1F;
1177 removable
= (gcw
[0] & 0x80) >> 7;
1178 protocol
= (gcw
[1] & 0xC0) >> 6;
1179 drq_type
= (gcw
[0] & 0x60) >> 5;
1180 packet_size
= gcw
[0] & 0x03;
1183 /* kludge for Apple PowerBook internal zip */
1184 if (device_type
== 5 &&
1185 !strstr(id
->model
, "CD-ROM") && strstr(id
->model
, "ZIP"))
1190 printk(KERN_ERR
"ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1192 else if (device_type
!= 0)
1193 printk(KERN_ERR
"ide-floppy: Device type (0x%02x) is not set "
1194 "to floppy\n", device_type
);
1195 else if (!removable
)
1196 printk(KERN_ERR
"ide-floppy: The removable flag is not set\n");
1197 else if (drq_type
== 3)
1198 printk(KERN_ERR
"ide-floppy: Sorry, DRQ type (0x%02x) not "
1199 "supported\n", drq_type
);
1200 else if (packet_size
!= 0)
1201 printk(KERN_ERR
"ide-floppy: Packet size (0x%02x) is not 12 "
1202 "bytes\n", packet_size
);
1208 #ifdef CONFIG_IDE_PROC_FS
1209 static void idefloppy_add_settings(ide_drive_t
*drive
)
1211 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1213 ide_add_setting(drive
, "bios_cyl", SETTING_RW
, TYPE_INT
, 0, 1023, 1, 1,
1214 &drive
->bios_cyl
, NULL
);
1215 ide_add_setting(drive
, "bios_head", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1216 &drive
->bios_head
, NULL
);
1217 ide_add_setting(drive
, "bios_sect", SETTING_RW
, TYPE_BYTE
, 0, 63, 1, 1,
1218 &drive
->bios_sect
, NULL
);
1219 ide_add_setting(drive
, "ticks", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1220 &floppy
->ticks
, NULL
);
1223 static inline void idefloppy_add_settings(ide_drive_t
*drive
) { ; }
1226 static void idefloppy_setup(ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
1230 *((u16
*) &gcw
) = drive
->id
->config
;
1231 floppy
->pc
= floppy
->pc_stack
;
1233 if (((gcw
[0] & 0x60) >> 5) == 1)
1234 floppy
->flags
|= IDEFLOPPY_FLAG_DRQ_INTERRUPT
;
1236 * We used to check revisions here. At this point however I'm giving up.
1237 * Just assume they are all broken, its easier.
1239 * The actual reason for the workarounds was likely a driver bug after
1240 * all rather than a firmware bug, and the workaround below used to hide
1241 * it. It should be fixed as of version 1.9, but to be on the safe side
1242 * we'll leave the limitation below for the 2.2.x tree.
1244 if (!strncmp(drive
->id
->model
, "IOMEGA ZIP 100 ATAPI", 20)) {
1245 floppy
->flags
|= IDEFLOPPY_FLAG_ZIP_DRIVE
;
1246 /* This value will be visible in the /proc/ide/hdx/settings */
1247 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
1248 blk_queue_max_sectors(drive
->queue
, 64);
1252 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1253 * nasty clicking noises without it, so please don't remove this.
1255 if (strncmp(drive
->id
->model
, "IOMEGA Clik!", 11) == 0) {
1256 blk_queue_max_sectors(drive
->queue
, 64);
1257 floppy
->flags
|= IDEFLOPPY_FLAG_CLIK_DRIVE
;
1260 (void) ide_floppy_get_capacity(drive
);
1261 idefloppy_add_settings(drive
);
1264 static void ide_floppy_remove(ide_drive_t
*drive
)
1266 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1267 struct gendisk
*g
= floppy
->disk
;
1269 ide_proc_unregister_driver(drive
, floppy
->driver
);
1273 ide_floppy_put(floppy
);
1276 static void idefloppy_cleanup_obj(struct kref
*kref
)
1278 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
1279 ide_drive_t
*drive
= floppy
->drive
;
1280 struct gendisk
*g
= floppy
->disk
;
1282 drive
->driver_data
= NULL
;
1283 g
->private_data
= NULL
;
1288 #ifdef CONFIG_IDE_PROC_FS
1289 static int proc_idefloppy_read_capacity(char *page
, char **start
, off_t off
,
1290 int count
, int *eof
, void *data
)
1292 ide_drive_t
*drive
= (ide_drive_t
*)data
;
1295 len
= sprintf(page
, "%llu\n", (long long)idefloppy_capacity(drive
));
1296 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1299 static ide_proc_entry_t idefloppy_proc
[] = {
1300 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
1301 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
1302 { NULL
, 0, NULL
, NULL
}
1304 #endif /* CONFIG_IDE_PROC_FS */
1306 static int ide_floppy_probe(ide_drive_t
*);
1308 static ide_driver_t idefloppy_driver
= {
1310 .owner
= THIS_MODULE
,
1311 .name
= "ide-floppy",
1312 .bus
= &ide_bus_type
,
1314 .probe
= ide_floppy_probe
,
1315 .remove
= ide_floppy_remove
,
1316 .version
= IDEFLOPPY_VERSION
,
1317 .media
= ide_floppy
,
1318 .supports_dsc_overlap
= 0,
1319 .do_request
= idefloppy_do_request
,
1320 .end_request
= idefloppy_end_request
,
1321 .error
= __ide_error
,
1322 .abort
= __ide_abort
,
1323 #ifdef CONFIG_IDE_PROC_FS
1324 .proc
= idefloppy_proc
,
1328 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
1330 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1331 struct ide_floppy_obj
*floppy
;
1333 struct ide_atapi_pc pc
;
1336 debug_log("Reached %s\n", __func__
);
1338 floppy
= ide_floppy_get(disk
);
1342 drive
= floppy
->drive
;
1346 if (floppy
->openers
== 1) {
1347 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1350 idefloppy_create_test_unit_ready_cmd(&pc
);
1351 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1352 idefloppy_create_start_stop_cmd(&pc
, 1);
1353 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1356 if (ide_floppy_get_capacity(drive
)
1357 && (filp
->f_flags
& O_NDELAY
) == 0
1359 * Allow O_NDELAY to open a drive without a disk, or with an
1360 * unreadable disk, so that we can get the format capacity
1361 * of the drive or begin the format - Sam
1365 goto out_put_floppy
;
1368 if (floppy
->wp
&& (filp
->f_mode
& 2)) {
1370 goto out_put_floppy
;
1372 floppy
->flags
|= IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1373 /* IOMEGA Clik! drives do not support lock/unlock commands */
1374 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1375 idefloppy_create_prevent_cmd(&pc
, 1);
1376 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1378 check_disk_change(inode
->i_bdev
);
1379 } else if (floppy
->flags
& IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
) {
1381 goto out_put_floppy
;
1387 ide_floppy_put(floppy
);
1391 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
1393 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1394 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1395 ide_drive_t
*drive
= floppy
->drive
;
1396 struct ide_atapi_pc pc
;
1398 debug_log("Reached %s\n", __func__
);
1400 if (floppy
->openers
== 1) {
1401 /* IOMEGA Clik! drives do not support lock/unlock commands */
1402 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1403 idefloppy_create_prevent_cmd(&pc
, 0);
1404 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1407 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1412 ide_floppy_put(floppy
);
1417 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1419 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1420 ide_drive_t
*drive
= floppy
->drive
;
1422 geo
->heads
= drive
->bios_head
;
1423 geo
->sectors
= drive
->bios_sect
;
1424 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
1428 static int ide_floppy_lockdoor(idefloppy_floppy_t
*floppy
,
1429 struct ide_atapi_pc
*pc
, unsigned long arg
, unsigned int cmd
)
1431 if (floppy
->openers
> 1)
1434 /* The IOMEGA Clik! Drive doesn't support this command -
1435 * no room for an eject mechanism */
1436 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1437 int prevent
= arg
? 1 : 0;
1439 if (cmd
== CDROMEJECT
)
1442 idefloppy_create_prevent_cmd(pc
, prevent
);
1443 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1446 if (cmd
== CDROMEJECT
) {
1447 idefloppy_create_start_stop_cmd(pc
, 2);
1448 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1454 static int ide_floppy_format_unit(idefloppy_floppy_t
*floppy
,
1457 int blocks
, length
, flags
, err
= 0;
1458 struct ide_atapi_pc pc
;
1460 if (floppy
->openers
> 1) {
1461 /* Don't format if someone is using the disk */
1462 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1466 floppy
->flags
|= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1469 * Send ATAPI_FORMAT_UNIT to the drive.
1471 * Userland gives us the following structure:
1473 * struct idefloppy_format_command {
1479 * flags is a bitmask, currently, the only defined flag is:
1481 * 0x01 - verify media after format.
1483 if (get_user(blocks
, arg
) ||
1484 get_user(length
, arg
+1) ||
1485 get_user(flags
, arg
+2)) {
1490 (void) idefloppy_get_sfrp_bit(floppy
->drive
);
1491 idefloppy_create_format_unit_cmd(&pc
, blocks
, length
, flags
);
1493 if (idefloppy_queue_pc_tail(floppy
->drive
, &pc
))
1498 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1503 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
1504 unsigned int cmd
, unsigned long arg
)
1506 struct block_device
*bdev
= inode
->i_bdev
;
1507 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1508 ide_drive_t
*drive
= floppy
->drive
;
1509 struct ide_atapi_pc pc
;
1510 void __user
*argp
= (void __user
*)arg
;
1516 case CDROM_LOCKDOOR
:
1517 return ide_floppy_lockdoor(floppy
, &pc
, arg
, cmd
);
1518 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED
:
1520 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY
:
1521 return ide_floppy_get_format_capacities(drive
, argp
);
1522 case IDEFLOPPY_IOCTL_FORMAT_START
:
1523 if (!(file
->f_mode
& 2))
1526 return ide_floppy_format_unit(floppy
, (int __user
*)arg
);
1527 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS
:
1528 return idefloppy_get_format_progress(drive
, argp
);
1532 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1533 * and CDROM_SEND_PACKET (legacy) ioctls
1535 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
1536 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
1537 bdev
->bd_disk
, cmd
, argp
);
1542 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
1547 static int idefloppy_media_changed(struct gendisk
*disk
)
1549 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1550 ide_drive_t
*drive
= floppy
->drive
;
1553 /* do not scan partitions twice if this is a removable device */
1554 if (drive
->attach
) {
1558 ret
= !!(floppy
->flags
& IDEFLOPPY_FLAG_MEDIA_CHANGED
);
1559 floppy
->flags
&= ~IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1563 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
1565 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1566 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
1570 static struct block_device_operations idefloppy_ops
= {
1571 .owner
= THIS_MODULE
,
1572 .open
= idefloppy_open
,
1573 .release
= idefloppy_release
,
1574 .ioctl
= idefloppy_ioctl
,
1575 .getgeo
= idefloppy_getgeo
,
1576 .media_changed
= idefloppy_media_changed
,
1577 .revalidate_disk
= idefloppy_revalidate_disk
1580 static int ide_floppy_probe(ide_drive_t
*drive
)
1582 idefloppy_floppy_t
*floppy
;
1585 if (!strstr("ide-floppy", drive
->driver_req
))
1587 if (!drive
->present
)
1589 if (drive
->media
!= ide_floppy
)
1591 if (!idefloppy_identify_device(drive
, drive
->id
)) {
1592 printk(KERN_ERR
"ide-floppy: %s: not supported by this version"
1593 " of ide-floppy\n", drive
->name
);
1597 printk(KERN_INFO
"ide-floppy: passing drive %s to ide-scsi"
1598 " emulation.\n", drive
->name
);
1601 floppy
= kzalloc(sizeof(idefloppy_floppy_t
), GFP_KERNEL
);
1603 printk(KERN_ERR
"ide-floppy: %s: Can't allocate a floppy"
1604 " structure\n", drive
->name
);
1608 g
= alloc_disk(1 << PARTN_BITS
);
1610 goto out_free_floppy
;
1612 ide_init_disk(g
, drive
);
1614 ide_proc_register_driver(drive
, &idefloppy_driver
);
1616 kref_init(&floppy
->kref
);
1618 floppy
->drive
= drive
;
1619 floppy
->driver
= &idefloppy_driver
;
1622 g
->private_data
= &floppy
->driver
;
1624 drive
->driver_data
= floppy
;
1626 idefloppy_setup(drive
, floppy
);
1628 g
->minors
= 1 << PARTN_BITS
;
1629 g
->driverfs_dev
= &drive
->gendev
;
1630 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
1631 g
->fops
= &idefloppy_ops
;
1642 static void __exit
idefloppy_exit(void)
1644 driver_unregister(&idefloppy_driver
.gen_driver
);
1647 static int __init
idefloppy_init(void)
1649 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
1650 return driver_register(&idefloppy_driver
.gen_driver
);
1653 MODULE_ALIAS("ide:*m-floppy*");
1654 module_init(idefloppy_init
);
1655 module_exit(idefloppy_exit
);
1656 MODULE_LICENSE("GPL");
1657 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");