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
10 * The driver currently doesn't have any fancy features, just the bare
11 * minimum read/write support.
13 * This driver supports the following IDE floppy drives:
15 * LS-120/240 SuperDisk
17 * Iomega PC Card Clik!/PocketZip
19 * For a historical changelog see
20 * Documentation/ide/ChangeLog.ide-floppy.1996-2002
23 #define IDEFLOPPY_VERSION "0.99.newide"
25 #include <linux/module.h>
26 #include <linux/types.h>
27 #include <linux/string.h>
28 #include <linux/kernel.h>
29 #include <linux/delay.h>
30 #include <linux/timer.h>
32 #include <linux/interrupt.h>
33 #include <linux/major.h>
34 #include <linux/errno.h>
35 #include <linux/genhd.h>
36 #include <linux/slab.h>
37 #include <linux/cdrom.h>
38 #include <linux/ide.h>
39 #include <linux/bitops.h>
40 #include <linux/mutex.h>
42 #include <scsi/scsi_ioctl.h>
44 #include <asm/byteorder.h>
45 #include <linux/irq.h>
46 #include <linux/uaccess.h>
48 #include <asm/unaligned.h>
50 /* define to see debug info */
51 #define IDEFLOPPY_DEBUG_LOG 0
53 /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
54 #define IDEFLOPPY_DEBUG( fmt, args... )
56 #if IDEFLOPPY_DEBUG_LOG
57 #define debug_log(fmt, args...) \
58 printk(KERN_INFO "ide-floppy: " fmt, ## args)
60 #define debug_log(fmt, args... ) do {} while(0)
65 * Some drives require a longer irq timeout.
67 #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
70 * After each failed packet command we issue a request sense command
71 * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times.
73 #define IDEFLOPPY_MAX_PC_RETRIES 3
76 * With each packet command, we allocate a buffer of
77 * IDEFLOPPY_PC_BUFFER_SIZE bytes.
79 #define IDEFLOPPY_PC_BUFFER_SIZE 256
82 * In various places in the driver, we need to allocate storage
83 * for packet commands and requests, which will remain valid while
84 * we leave the driver to wait for an interrupt or a timeout event.
86 #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
89 * Our view of a packet command.
91 typedef struct idefloppy_packet_command_s
{
92 u8 c
[12]; /* Actual packet bytes */
93 int retries
; /* On each retry, we increment retries */
94 int error
; /* Error code */
95 int request_transfer
; /* Bytes to transfer */
96 int actually_transferred
; /* Bytes actually transferred */
97 int buffer_size
; /* Size of our data buffer */
98 int b_count
; /* Missing/Available data on the current buffer */
99 struct request
*rq
; /* The corresponding request */
100 u8
*buffer
; /* Data buffer */
101 u8
*current_position
; /* Pointer into the above buffer */
102 void (*callback
) (ide_drive_t
*); /* Called when this packet command is completed */
103 u8 pc_buffer
[IDEFLOPPY_PC_BUFFER_SIZE
]; /* Temporary buffer */
104 unsigned long flags
; /* Status/Action bit flags: long for set_bit */
108 * Packet command flag bits.
110 #define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */
111 #define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */
112 #define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */
113 #define PC_WRITING 5 /* Data direction */
115 #define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */
117 /* format capacities descriptor codes */
118 #define CAPACITY_INVALID 0x00
119 #define CAPACITY_UNFORMATTED 0x01
120 #define CAPACITY_CURRENT 0x02
121 #define CAPACITY_NO_CARTRIDGE 0x03
124 * Most of our global data which we need to save even as we leave the
125 * driver due to an interrupt or a timer event is stored in a variable
126 * of type idefloppy_floppy_t, defined below.
128 typedef struct ide_floppy_obj
{
130 ide_driver_t
*driver
;
131 struct gendisk
*disk
;
133 unsigned int openers
; /* protected by BKL for now */
135 /* Current packet command */
137 /* Last failed packet command */
138 idefloppy_pc_t
*failed_pc
;
139 /* Packet command stack */
140 idefloppy_pc_t pc_stack
[IDEFLOPPY_PC_STACK
];
141 /* Next free packet command storage space */
143 struct request rq_stack
[IDEFLOPPY_PC_STACK
];
144 /* We implement a circular array */
148 * Last error information
150 u8 sense_key
, asc
, ascq
;
151 /* delay this long before sending packet command */
153 int progress_indication
;
159 int blocks
, block_size
, bs_factor
;
160 /* Last format capacity descriptor */
162 /* Copy of the flexible disk page */
163 u8 flexible_disk_page
[32];
166 /* Supports format progress report */
168 /* Status/Action flags */
170 } idefloppy_floppy_t
;
172 #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
175 * Floppy flag bits values.
177 #define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */
178 #define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */
179 #define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */
180 #define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */
181 #define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */
184 * Defines for the mode sense command
186 #define MODE_SENSE_CURRENT 0x00
187 #define MODE_SENSE_CHANGEABLE 0x01
188 #define MODE_SENSE_DEFAULT 0x02
189 #define MODE_SENSE_SAVED 0x03
192 * IOCTLs used in low-level formatting.
195 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
196 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
197 #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
198 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
201 * Error codes which are returned in rq->errors to the higher part
204 #define IDEFLOPPY_ERROR_GENERAL 101
207 * The following is used to format the general configuration word of
208 * the ATAPI IDENTIFY DEVICE command.
210 struct idefloppy_id_gcw
{
211 #if defined(__LITTLE_ENDIAN_BITFIELD)
212 unsigned packet_size
:2; /* Packet Size */
213 unsigned reserved234
:3; /* Reserved */
214 unsigned drq_type
:2; /* Command packet DRQ type */
215 unsigned removable
:1; /* Removable media */
216 unsigned device_type
:5; /* Device type */
217 unsigned reserved13
:1; /* Reserved */
218 unsigned protocol
:2; /* Protocol type */
219 #elif defined(__BIG_ENDIAN_BITFIELD)
220 unsigned protocol
:2; /* Protocol type */
221 unsigned reserved13
:1; /* Reserved */
222 unsigned device_type
:5; /* Device type */
223 unsigned removable
:1; /* Removable media */
224 unsigned drq_type
:2; /* Command packet DRQ type */
225 unsigned reserved234
:3; /* Reserved */
226 unsigned packet_size
:2; /* Packet Size */
228 #error "Bitfield endianness not defined! Check your byteorder.h"
233 * Pages of the SELECT SENSE / MODE SENSE packet commands.
234 * See SFF-8070i spec.
236 #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
237 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
239 static DEFINE_MUTEX(idefloppy_ref_mutex
);
241 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
243 #define ide_floppy_g(disk) \
244 container_of((disk)->private_data, struct ide_floppy_obj, driver)
246 static struct ide_floppy_obj
*ide_floppy_get(struct gendisk
*disk
)
248 struct ide_floppy_obj
*floppy
= NULL
;
250 mutex_lock(&idefloppy_ref_mutex
);
251 floppy
= ide_floppy_g(disk
);
253 kref_get(&floppy
->kref
);
254 mutex_unlock(&idefloppy_ref_mutex
);
258 static void idefloppy_cleanup_obj(struct kref
*);
260 static void ide_floppy_put(struct ide_floppy_obj
*floppy
)
262 mutex_lock(&idefloppy_ref_mutex
);
263 kref_put(&floppy
->kref
, idefloppy_cleanup_obj
);
264 mutex_unlock(&idefloppy_ref_mutex
);
268 * Too bad. The drive wants to send us data which we are not ready to accept.
269 * Just throw it away.
271 static void idefloppy_discard_data (ide_drive_t
*drive
, unsigned int bcount
)
274 (void) HWIF(drive
)->INB(IDE_DATA_REG
);
277 static void idefloppy_write_zeros(ide_drive_t
*drive
, unsigned int bcount
)
280 HWIF(drive
)->OUTB(0, IDE_DATA_REG
);
285 * idefloppy_do_end_request is used to finish servicing a request.
287 * For read/write requests, we will call ide_end_request to pass to the
290 static int idefloppy_do_end_request(ide_drive_t
*drive
, int uptodate
, int nsecs
)
292 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
293 struct request
*rq
= HWGROUP(drive
)->rq
;
296 debug_log("Reached %s\n", __func__
);
299 case 0: error
= IDEFLOPPY_ERROR_GENERAL
; break;
300 case 1: error
= 0; break;
301 default: error
= uptodate
;
304 floppy
->failed_pc
= NULL
;
305 /* Why does this happen? */
308 if (!blk_special_request(rq
)) {
309 /* our real local end request function */
310 ide_end_request(drive
, uptodate
, nsecs
);
314 /* fixme: need to move this local also */
315 ide_end_drive_cmd(drive
, 0, 0);
319 static void ide_floppy_io_buffers(ide_drive_t
*drive
, idefloppy_pc_t
*pc
,
320 unsigned int bcount
, int direction
)
322 struct request
*rq
= pc
->rq
;
323 struct req_iterator iter
;
324 struct bio_vec
*bvec
;
329 rq_for_each_segment(bvec
, rq
, iter
) {
333 count
= min(bvec
->bv_len
, bcount
);
335 data
= bvec_kmap_irq(bvec
, &flags
);
337 drive
->hwif
->atapi_output_bytes(drive
, data
, count
);
339 drive
->hwif
->atapi_input_bytes(drive
, data
, count
);
340 bvec_kunmap_irq(data
, &flags
);
343 pc
->b_count
+= count
;
347 idefloppy_do_end_request(drive
, 1, done
>> 9);
350 printk(KERN_ERR
"%s: leftover data in %s, bcount == %d\n",
351 drive
->name
, __func__
, bcount
);
353 idefloppy_write_zeros(drive
, bcount
);
355 idefloppy_discard_data(drive
, bcount
);
360 static void idefloppy_update_buffers (ide_drive_t
*drive
, idefloppy_pc_t
*pc
)
362 struct request
*rq
= pc
->rq
;
363 struct bio
*bio
= rq
->bio
;
365 while ((bio
= rq
->bio
) != NULL
)
366 idefloppy_do_end_request(drive
, 1, 0);
370 * idefloppy_queue_pc_head generates a new packet command request in front
371 * of the request queue, before the current request, so that it will be
372 * processed immediately, on the next pass through the driver.
374 static void idefloppy_queue_pc_head (ide_drive_t
*drive
,idefloppy_pc_t
*pc
,struct request
*rq
)
376 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
378 ide_init_drive_cmd(rq
);
379 rq
->buffer
= (char *) pc
;
380 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
381 rq
->rq_disk
= floppy
->disk
;
382 (void) ide_do_drive_cmd(drive
, rq
, ide_preempt
);
385 static idefloppy_pc_t
*idefloppy_next_pc_storage (ide_drive_t
*drive
)
387 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
389 if (floppy
->pc_stack_index
== IDEFLOPPY_PC_STACK
)
390 floppy
->pc_stack_index
=0;
391 return (&floppy
->pc_stack
[floppy
->pc_stack_index
++]);
394 static struct request
*idefloppy_next_rq_storage (ide_drive_t
*drive
)
396 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
398 if (floppy
->rq_stack_index
== IDEFLOPPY_PC_STACK
)
399 floppy
->rq_stack_index
= 0;
400 return (&floppy
->rq_stack
[floppy
->rq_stack_index
++]);
403 static void idefloppy_request_sense_callback(ide_drive_t
*drive
)
405 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
406 u8
*buf
= floppy
->pc
->buffer
;
408 debug_log("Reached %s\n", __func__
);
410 if (!floppy
->pc
->error
) {
411 floppy
->sense_key
= buf
[2] & 0x0F;
412 floppy
->asc
= buf
[12];
413 floppy
->ascq
= buf
[13];
414 floppy
->progress_indication
= buf
[15] & 0x80 ?
415 (u16
)get_unaligned((u16
*)&buf
[16]) : 0x10000;
417 if (floppy
->failed_pc
)
418 debug_log("pc = %x, sense key = %x, asc = %x,"
420 floppy
->failed_pc
->c
[0],
425 debug_log("sense key = %x, asc = %x, ascq = %x\n",
431 idefloppy_do_end_request(drive
, 1, 0);
433 printk(KERN_ERR
"Error in REQUEST SENSE itself - Aborting"
435 idefloppy_do_end_request(drive
, 0, 0);
440 * General packet command callback function.
442 static void idefloppy_pc_callback (ide_drive_t
*drive
)
444 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
446 debug_log("Reached %s\n", __func__
);
448 idefloppy_do_end_request(drive
, floppy
->pc
->error
? 0 : 1, 0);
452 * idefloppy_init_pc initializes a packet command.
454 static void idefloppy_init_pc (idefloppy_pc_t
*pc
)
456 memset(pc
->c
, 0, 12);
459 pc
->request_transfer
= 0;
460 pc
->buffer
= pc
->pc_buffer
;
461 pc
->buffer_size
= IDEFLOPPY_PC_BUFFER_SIZE
;
462 pc
->callback
= &idefloppy_pc_callback
;
465 static void idefloppy_create_request_sense_cmd (idefloppy_pc_t
*pc
)
467 idefloppy_init_pc(pc
);
468 pc
->c
[0] = GPCMD_REQUEST_SENSE
;
470 pc
->request_transfer
= 18;
471 pc
->callback
= &idefloppy_request_sense_callback
;
475 * idefloppy_retry_pc is called when an error was detected during the
476 * last packet command. We queue a request sense packet command in
477 * the head of the request list.
479 static void idefloppy_retry_pc (ide_drive_t
*drive
)
484 (void)drive
->hwif
->INB(IDE_ERROR_REG
);
485 pc
= idefloppy_next_pc_storage(drive
);
486 rq
= idefloppy_next_rq_storage(drive
);
487 idefloppy_create_request_sense_cmd(pc
);
488 idefloppy_queue_pc_head(drive
, pc
, rq
);
491 /* The usual interrupt handler called during a packet command. */
492 static ide_startstop_t
idefloppy_pc_intr (ide_drive_t
*drive
)
494 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
495 ide_hwif_t
*hwif
= drive
->hwif
;
496 idefloppy_pc_t
*pc
= floppy
->pc
;
497 struct request
*rq
= pc
->rq
;
498 xfer_func_t
*xferfunc
;
504 debug_log("Reached %s interrupt handler\n", __func__
);
506 if (test_bit(PC_DMA_IN_PROGRESS
, &pc
->flags
)) {
507 dma_error
= hwif
->ide_dma_end(drive
);
509 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
510 rq_data_dir(rq
) ? "write" : "read");
511 set_bit(PC_DMA_ERROR
, &pc
->flags
);
513 pc
->actually_transferred
= pc
->request_transfer
;
514 idefloppy_update_buffers(drive
, pc
);
516 debug_log("DMA finished\n");
519 /* Clear the interrupt */
520 stat
= drive
->hwif
->INB(IDE_STATUS_REG
);
522 if ((stat
& DRQ_STAT
) == 0) { /* No more interrupts */
523 debug_log("Packet command completed, %d bytes transferred\n",
524 pc
->actually_transferred
);
525 clear_bit(PC_DMA_IN_PROGRESS
, &pc
->flags
);
527 local_irq_enable_in_hardirq();
529 if ((stat
& ERR_STAT
) || test_bit(PC_DMA_ERROR
, &pc
->flags
)) {
531 debug_log("%s: I/O error\n", drive
->name
);
533 if (pc
->c
[0] == GPCMD_REQUEST_SENSE
) {
534 printk(KERN_ERR
"ide-floppy: I/O error in "
535 "request sense command\n");
536 return ide_do_reset(drive
);
538 /* Retry operation */
539 idefloppy_retry_pc(drive
);
540 /* queued, but not started */
544 if (floppy
->failed_pc
== pc
)
545 floppy
->failed_pc
= NULL
;
546 /* Command finished - Call the callback function */
551 if (test_and_clear_bit(PC_DMA_IN_PROGRESS
, &pc
->flags
)) {
552 printk(KERN_ERR
"ide-floppy: The floppy wants to issue "
553 "more interrupts in DMA mode\n");
555 return ide_do_reset(drive
);
558 /* Get the number of bytes to transfer */
559 bcount
= (hwif
->INB(IDE_BCOUNTH_REG
) << 8) |
560 hwif
->INB(IDE_BCOUNTL_REG
);
561 /* on this interrupt */
562 ireason
= hwif
->INB(IDE_IREASON_REG
);
565 printk(KERN_ERR
"ide-floppy: CoD != 0 in %s\n", __func__
);
566 return ide_do_reset(drive
);
568 if (((ireason
& IO
) == IO
) == test_bit(PC_WRITING
, &pc
->flags
)) {
569 /* Hopefully, we will never get here */
570 printk(KERN_ERR
"ide-floppy: We wanted to %s, ",
571 (ireason
& IO
) ? "Write" : "Read");
572 printk(KERN_ERR
"but the floppy wants us to %s !\n",
573 (ireason
& IO
) ? "Read" : "Write");
574 return ide_do_reset(drive
);
576 if (!test_bit(PC_WRITING
, &pc
->flags
)) {
577 /* Reading - Check that we have enough space */
578 temp
= pc
->actually_transferred
+ bcount
;
579 if (temp
> pc
->request_transfer
) {
580 if (temp
> pc
->buffer_size
) {
581 printk(KERN_ERR
"ide-floppy: The floppy wants "
582 "to send us more data than expected "
583 "- discarding data\n");
584 idefloppy_discard_data(drive
, bcount
);
586 ide_set_handler(drive
,
592 debug_log("The floppy wants to send us more data than"
593 " expected - allowing transfer\n");
596 if (test_bit(PC_WRITING
, &pc
->flags
))
597 xferfunc
= hwif
->atapi_output_bytes
;
599 xferfunc
= hwif
->atapi_input_bytes
;
602 xferfunc(drive
, pc
->current_position
, bcount
);
604 ide_floppy_io_buffers(drive
, pc
, bcount
,
605 test_bit(PC_WRITING
, &pc
->flags
));
607 /* Update the current position */
608 pc
->actually_transferred
+= bcount
;
609 pc
->current_position
+= bcount
;
611 /* And set the interrupt handler again */
612 ide_set_handler(drive
, &idefloppy_pc_intr
, IDEFLOPPY_WAIT_CMD
, NULL
);
617 * This is the original routine that did the packet transfer.
618 * It fails at high speeds on the Iomega ZIP drive, so there's a slower version
619 * for that drive below. The algorithm is chosen based on drive type
621 static ide_startstop_t
idefloppy_transfer_pc (ide_drive_t
*drive
)
623 ide_startstop_t startstop
;
624 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
627 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
, BUSY_STAT
, WAIT_READY
)) {
628 printk(KERN_ERR
"ide-floppy: Strange, packet command "
629 "initiated yet DRQ isn't asserted\n");
632 ireason
= drive
->hwif
->INB(IDE_IREASON_REG
);
633 if ((ireason
& CD
) == 0 || (ireason
& IO
)) {
634 printk(KERN_ERR
"ide-floppy: (IO,CoD) != (0,1) while "
635 "issuing a packet command\n");
636 return ide_do_reset(drive
);
639 /* Set the interrupt routine */
640 ide_set_handler(drive
, &idefloppy_pc_intr
, IDEFLOPPY_WAIT_CMD
, NULL
);
641 /* Send the actual packet */
642 HWIF(drive
)->atapi_output_bytes(drive
, floppy
->pc
->c
, 12);
648 * What we have here is a classic case of a top half / bottom half
649 * interrupt service routine. In interrupt mode, the device sends
650 * an interrupt to signal it's ready to receive a packet. However,
651 * we need to delay about 2-3 ticks before issuing the packet or we
654 * So, follow carefully. transfer_pc1 is called as an interrupt (or
655 * directly). In either case, when the device says it's ready for a
656 * packet, we schedule the packet transfer to occur about 2-3 ticks
657 * later in transfer_pc2.
659 static int idefloppy_transfer_pc2 (ide_drive_t
*drive
)
661 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
663 /* Send the actual packet */
664 HWIF(drive
)->atapi_output_bytes(drive
, floppy
->pc
->c
, 12);
665 /* Timeout for the packet command */
666 return IDEFLOPPY_WAIT_CMD
;
669 static ide_startstop_t
idefloppy_transfer_pc1 (ide_drive_t
*drive
)
671 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
672 ide_startstop_t startstop
;
675 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
, BUSY_STAT
, WAIT_READY
)) {
676 printk(KERN_ERR
"ide-floppy: Strange, packet command "
677 "initiated yet DRQ isn't asserted\n");
680 ireason
= drive
->hwif
->INB(IDE_IREASON_REG
);
681 if ((ireason
& CD
) == 0 || (ireason
& IO
)) {
682 printk(KERN_ERR
"ide-floppy: (IO,CoD) != (0,1) "
683 "while issuing a packet command\n");
684 return ide_do_reset(drive
);
687 * The following delay solves a problem with ATAPI Zip 100 drives
688 * where the Busy flag was apparently being deasserted before the
689 * unit was ready to receive data. This was happening on a
690 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
691 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
692 * used until after the packet is moved in about 50 msec.
695 ide_set_handler(drive
,
696 &idefloppy_pc_intr
, /* service routine for packet command */
697 floppy
->ticks
, /* wait this long before "failing" */
698 &idefloppy_transfer_pc2
); /* fail == transfer_pc2 */
702 static void ide_floppy_report_error(idefloppy_floppy_t
*floppy
,
705 /* supress error messages resulting from Medium not present */
706 if (floppy
->sense_key
== 0x02 &&
707 floppy
->asc
== 0x3a &&
708 floppy
->ascq
== 0x00)
711 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
712 "asc = %2x, ascq = %2x\n",
713 floppy
->drive
->name
, pc
->c
[0], floppy
->sense_key
,
714 floppy
->asc
, floppy
->ascq
);
719 * Issue a packet command
721 static ide_startstop_t
idefloppy_issue_pc (ide_drive_t
*drive
, idefloppy_pc_t
*pc
)
723 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
724 ide_hwif_t
*hwif
= drive
->hwif
;
725 ide_handler_t
*pkt_xfer_routine
;
729 if (floppy
->failed_pc
== NULL
&&
730 pc
->c
[0] != GPCMD_REQUEST_SENSE
)
731 floppy
->failed_pc
= pc
;
732 /* Set the current packet command */
735 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
) {
736 if (!test_bit(PC_SUPPRESS_ERROR
, &pc
->flags
))
737 ide_floppy_report_error(floppy
, pc
);
739 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
741 floppy
->failed_pc
= NULL
;
746 debug_log("Retry number - %d\n", pc
->retries
);
749 /* We haven't transferred any data yet */
750 pc
->actually_transferred
= 0;
751 pc
->current_position
= pc
->buffer
;
752 bcount
= min(pc
->request_transfer
, 63 * 1024);
754 if (test_and_clear_bit(PC_DMA_ERROR
, &pc
->flags
))
759 if (test_bit(PC_DMA_RECOMMENDED
, &pc
->flags
) && drive
->using_dma
)
760 dma
= !hwif
->dma_setup(drive
);
762 ide_pktcmd_tf_load(drive
, IDE_TFLAG_NO_SELECT_MASK
|
763 IDE_TFLAG_OUT_DEVICE
, bcount
, dma
);
765 if (dma
) { /* Begin DMA, if necessary */
766 set_bit(PC_DMA_IN_PROGRESS
, &pc
->flags
);
767 hwif
->dma_start(drive
);
770 /* Can we transfer the packet when we get the interrupt or wait? */
771 if (test_bit(IDEFLOPPY_ZIP_DRIVE
, &floppy
->flags
)) {
773 pkt_xfer_routine
= &idefloppy_transfer_pc1
;
776 pkt_xfer_routine
= &idefloppy_transfer_pc
;
779 if (test_bit (IDEFLOPPY_DRQ_INTERRUPT
, &floppy
->flags
)) {
780 /* Issue the packet command */
781 ide_execute_command(drive
, WIN_PACKETCMD
,
787 /* Issue the packet command */
788 HWIF(drive
)->OUTB(WIN_PACKETCMD
, IDE_COMMAND_REG
);
789 return (*pkt_xfer_routine
) (drive
);
793 static void idefloppy_rw_callback (ide_drive_t
*drive
)
795 debug_log("Reached %s\n", __func__
);
797 idefloppy_do_end_request(drive
, 1, 0);
801 static void idefloppy_create_prevent_cmd (idefloppy_pc_t
*pc
, int prevent
)
803 debug_log("creating prevent removal command, prevent = %d\n", prevent
);
805 idefloppy_init_pc(pc
);
806 pc
->c
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
810 static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t
*pc
)
812 idefloppy_init_pc(pc
);
813 pc
->c
[0] = GPCMD_READ_FORMAT_CAPACITIES
;
816 pc
->request_transfer
= 255;
819 static void idefloppy_create_format_unit_cmd (idefloppy_pc_t
*pc
, int b
, int l
,
822 idefloppy_init_pc(pc
);
823 pc
->c
[0] = GPCMD_FORMAT_UNIT
;
826 memset(pc
->buffer
, 0, 12);
827 pc
->buffer
[1] = 0xA2;
828 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
830 if (flags
& 1) /* Verify bit on... */
831 pc
->buffer
[1] ^= 0x20; /* ... turn off DCRT bit */
834 put_unaligned(cpu_to_be32(b
), (unsigned int *)(&pc
->buffer
[4]));
835 put_unaligned(cpu_to_be32(l
), (unsigned int *)(&pc
->buffer
[8]));
837 set_bit(PC_WRITING
, &pc
->flags
);
841 * A mode sense command is used to "sense" floppy parameters.
843 static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t
*pc
, u8 page_code
, u8 type
)
845 u16 length
= 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
847 idefloppy_init_pc(pc
);
848 pc
->c
[0] = GPCMD_MODE_SENSE_10
;
850 pc
->c
[2] = page_code
+ (type
<< 6);
853 case IDEFLOPPY_CAPABILITIES_PAGE
:
856 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
860 printk(KERN_ERR
"ide-floppy: unsupported page code "
861 "in create_mode_sense_cmd\n");
863 put_unaligned(cpu_to_be16(length
), (u16
*) &pc
->c
[7]);
864 pc
->request_transfer
= length
;
867 static void idefloppy_create_start_stop_cmd (idefloppy_pc_t
*pc
, int start
)
869 idefloppy_init_pc(pc
);
870 pc
->c
[0] = GPCMD_START_STOP_UNIT
;
874 static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t
*pc
)
876 idefloppy_init_pc(pc
);
877 pc
->c
[0] = GPCMD_TEST_UNIT_READY
;
880 static void idefloppy_create_rw_cmd(idefloppy_floppy_t
*floppy
,
881 idefloppy_pc_t
*pc
, struct request
*rq
,
882 unsigned long sector
)
884 int block
= sector
/ floppy
->bs_factor
;
885 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
886 int cmd
= rq_data_dir(rq
);
888 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
891 idefloppy_init_pc(pc
);
892 pc
->c
[0] = cmd
== READ
? GPCMD_READ_10
: GPCMD_WRITE_10
;
893 put_unaligned(cpu_to_be16(blocks
), (unsigned short *)&pc
->c
[7]);
894 put_unaligned(cpu_to_be32(block
), (unsigned int *) &pc
->c
[2]);
896 pc
->callback
= &idefloppy_rw_callback
;
898 pc
->b_count
= cmd
== READ
? 0 : rq
->bio
->bi_size
;
899 if (rq
->cmd_flags
& REQ_RW
)
900 set_bit(PC_WRITING
, &pc
->flags
);
902 pc
->request_transfer
= pc
->buffer_size
= blocks
* floppy
->block_size
;
903 set_bit(PC_DMA_RECOMMENDED
, &pc
->flags
);
907 idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
, idefloppy_pc_t
*pc
, struct request
*rq
)
909 idefloppy_init_pc(pc
);
910 pc
->callback
= &idefloppy_rw_callback
;
911 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
913 pc
->b_count
= rq
->data_len
;
914 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
915 set_bit(PC_WRITING
, &pc
->flags
);
916 pc
->buffer
= rq
->data
;
918 set_bit(PC_DMA_RECOMMENDED
, &pc
->flags
);
921 * possibly problematic, doesn't look like ide-floppy correctly
922 * handled scattered requests if dma fails...
924 pc
->request_transfer
= pc
->buffer_size
= rq
->data_len
;
928 * idefloppy_do_request is our request handling function.
930 static ide_startstop_t
idefloppy_do_request (ide_drive_t
*drive
, struct request
*rq
, sector_t block_s
)
932 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
934 unsigned long block
= (unsigned long)block_s
;
936 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
937 rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
938 rq
->cmd_type
, rq
->errors
);
939 debug_log("sector: %ld, nr_sectors: %ld, "
940 "current_nr_sectors: %d\n", (long)rq
->sector
,
941 rq
->nr_sectors
, rq
->current_nr_sectors
);
943 if (rq
->errors
>= ERROR_MAX
) {
944 if (floppy
->failed_pc
)
945 ide_floppy_report_error(floppy
, floppy
->failed_pc
);
947 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
949 idefloppy_do_end_request(drive
, 0, 0);
952 if (blk_fs_request(rq
)) {
953 if (((long)rq
->sector
% floppy
->bs_factor
) ||
954 (rq
->nr_sectors
% floppy
->bs_factor
)) {
955 printk("%s: unsupported r/w request size\n",
957 idefloppy_do_end_request(drive
, 0, 0);
960 pc
= idefloppy_next_pc_storage(drive
);
961 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
962 } else if (blk_special_request(rq
)) {
963 pc
= (idefloppy_pc_t
*) rq
->buffer
;
964 } else if (blk_pc_request(rq
)) {
965 pc
= idefloppy_next_pc_storage(drive
);
966 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
968 blk_dump_rq_flags(rq
,
969 "ide-floppy: unsupported command in queue");
970 idefloppy_do_end_request(drive
, 0, 0);
975 return idefloppy_issue_pc(drive
, pc
);
979 * idefloppy_queue_pc_tail adds a special packet command request to the
980 * tail of the request queue, and waits for it to be serviced.
982 static int idefloppy_queue_pc_tail (ide_drive_t
*drive
,idefloppy_pc_t
*pc
)
984 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
987 ide_init_drive_cmd (&rq
);
988 rq
.buffer
= (char *) pc
;
989 rq
.cmd_type
= REQ_TYPE_SPECIAL
;
990 rq
.rq_disk
= floppy
->disk
;
992 return ide_do_drive_cmd(drive
, &rq
, ide_wait
);
996 * Look at the flexible disk page parameters. We ignore the CHS capacity
997 * parameters and use the LBA parameters instead.
999 static int ide_floppy_get_flexible_disk_page(ide_drive_t
*drive
)
1001 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1004 int capacity
, lba_capacity
;
1005 u16 transfer_rate
, sector_size
, cyls
, rpm
;
1008 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
,
1009 MODE_SENSE_CURRENT
);
1011 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1012 printk(KERN_ERR
"ide-floppy: Can't get flexible disk page"
1016 floppy
->wp
= !!(pc
.buffer
[3] & 0x80);
1017 set_disk_ro(floppy
->disk
, floppy
->wp
);
1018 page
= &pc
.buffer
[8];
1020 transfer_rate
= be16_to_cpu(*(u16
*)&pc
.buffer
[8 + 2]);
1021 sector_size
= be16_to_cpu(*(u16
*)&pc
.buffer
[8 + 6]);
1022 cyls
= be16_to_cpu(*(u16
*)&pc
.buffer
[8 + 8]);
1023 rpm
= be16_to_cpu(*(u16
*)&pc
.buffer
[8 + 28]);
1024 heads
= pc
.buffer
[8 + 4];
1025 sectors
= pc
.buffer
[8 + 5];
1027 capacity
= cyls
* heads
* sectors
* sector_size
;
1029 if (memcmp(page
, &floppy
->flexible_disk_page
, 32))
1030 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
1031 "%d sector size, %d rpm\n",
1032 drive
->name
, capacity
/ 1024, cyls
, heads
,
1033 sectors
, transfer_rate
/ 8, sector_size
, rpm
);
1035 memcpy(&floppy
->flexible_disk_page
, page
, 32);
1036 drive
->bios_cyl
= cyls
;
1037 drive
->bios_head
= heads
;
1038 drive
->bios_sect
= sectors
;
1039 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
1041 if (capacity
< lba_capacity
) {
1042 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
1043 "bytes, but the drive only handles %d\n",
1044 drive
->name
, lba_capacity
, capacity
);
1045 floppy
->blocks
= floppy
->block_size
?
1046 capacity
/ floppy
->block_size
: 0;
1051 static int idefloppy_get_sfrp_bit(ide_drive_t
*drive
)
1053 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1057 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_CAPABILITIES_PAGE
,
1058 MODE_SENSE_CURRENT
);
1060 set_bit(PC_SUPPRESS_ERROR
, &pc
.flags
);
1061 if (idefloppy_queue_pc_tail(drive
, &pc
))
1064 floppy
->srfp
= pc
.buffer
[8 + 2] & 0x40;
1069 * Determine if a media is present in the floppy drive, and if so, its LBA
1072 static int ide_floppy_get_capacity(ide_drive_t
*drive
)
1074 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1077 u8 header_len
, desc_cnt
;
1078 int i
, rc
= 1, blocks
, length
;
1080 drive
->bios_cyl
= 0;
1081 drive
->bios_head
= drive
->bios_sect
= 0;
1083 floppy
->bs_factor
= 1;
1084 set_capacity(floppy
->disk
, 0);
1086 idefloppy_create_read_capacity_cmd(&pc
);
1087 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1088 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
1091 header_len
= pc
.buffer
[3];
1092 cap_desc
= &pc
.buffer
[4];
1093 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
1095 for (i
= 0; i
< desc_cnt
; i
++) {
1096 unsigned int desc_start
= 4 + i
*8;
1098 blocks
= be32_to_cpu(*(u32
*)&pc
.buffer
[desc_start
]);
1099 length
= be16_to_cpu(*(u16
*)&pc
.buffer
[desc_start
+ 6]);
1101 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
1102 i
, blocks
* length
/ 1024, blocks
, length
);
1107 * the code below is valid only for the 1st descriptor, ie i=0
1110 switch (pc
.buffer
[desc_start
+ 4] & 0x03) {
1111 /* Clik! drive returns this instead of CAPACITY_CURRENT */
1112 case CAPACITY_UNFORMATTED
:
1113 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
))
1115 * If it is not a clik drive, break out
1116 * (maintains previous driver behaviour)
1119 case CAPACITY_CURRENT
:
1120 /* Normal Zip/LS-120 disks */
1121 if (memcmp(cap_desc
, &floppy
->cap_desc
, 8))
1122 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
1123 "sector size\n", drive
->name
,
1124 blocks
* length
/ 1024, blocks
, length
);
1125 memcpy(&floppy
->cap_desc
, cap_desc
, 8);
1127 if (!length
|| length
% 512) {
1128 printk(KERN_NOTICE
"%s: %d bytes block size "
1129 "not supported\n", drive
->name
, length
);
1131 floppy
->blocks
= blocks
;
1132 floppy
->block_size
= length
;
1133 floppy
->bs_factor
= length
/ 512;
1134 if (floppy
->bs_factor
!= 1)
1135 printk(KERN_NOTICE
"%s: warning: non "
1136 "512 bytes block size not "
1137 "fully supported\n",
1142 case CAPACITY_NO_CARTRIDGE
:
1144 * This is a KERN_ERR so it appears on screen
1145 * for the user to see
1147 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
1149 case CAPACITY_INVALID
:
1150 printk(KERN_ERR
"%s: Invalid capacity for disk "
1151 "in drive\n", drive
->name
);
1154 debug_log("Descriptor 0 Code: %d\n",
1155 pc
.buffer
[desc_start
+ 4] & 0x03);
1158 /* Clik! disk does not support get_flexible_disk_page */
1159 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
))
1160 (void) ide_floppy_get_flexible_disk_page(drive
);
1162 set_capacity(floppy
->disk
, floppy
->blocks
* floppy
->bs_factor
);
1167 * Obtain the list of formattable capacities.
1168 * Very similar to ide_floppy_get_capacity, except that we push the capacity
1169 * descriptors to userland, instead of our own structures.
1171 * Userland gives us the following structure:
1173 * struct idefloppy_format_capacities {
1181 * userland initializes nformats to the number of allocated formats[] records.
1182 * On exit we set nformats to the number of records we've actually initialized.
1185 static int ide_floppy_get_format_capacities(ide_drive_t
*drive
, int __user
*arg
)
1188 u8 header_len
, desc_cnt
;
1189 int i
, blocks
, length
, u_array_size
, u_index
;
1192 if (get_user(u_array_size
, arg
))
1195 if (u_array_size
<= 0)
1198 idefloppy_create_read_capacity_cmd(&pc
);
1199 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1200 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
1203 header_len
= pc
.buffer
[3];
1204 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
1210 * We always skip the first capacity descriptor. That's the current
1211 * capacity. We are interested in the remaining descriptors, the
1212 * formattable capacities.
1214 for (i
= 1; i
< desc_cnt
; i
++) {
1215 unsigned int desc_start
= 4 + i
*8;
1217 if (u_index
>= u_array_size
)
1218 break; /* User-supplied buffer too small */
1220 blocks
= be32_to_cpu(*(u32
*)&pc
.buffer
[desc_start
]);
1221 length
= be16_to_cpu(*(u16
*)&pc
.buffer
[desc_start
+ 6]);
1223 if (put_user(blocks
, argp
))
1227 if (put_user(length
, argp
))
1234 if (put_user(u_index
, arg
))
1240 ** Get ATAPI_FORMAT_UNIT progress indication.
1242 ** Userland gives a pointer to an int. The int is set to a progress
1243 ** indicator 0-65536, with 65536=100%.
1245 ** If the drive does not support format progress indication, we just check
1246 ** the dsc bit, and return either 0 or 65536.
1249 static int idefloppy_get_format_progress(ide_drive_t
*drive
, int __user
*arg
)
1251 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1253 int progress_indication
= 0x10000;
1256 idefloppy_create_request_sense_cmd(&pc
);
1257 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1261 if (floppy
->sense_key
== 2 &&
1263 floppy
->ascq
== 4) {
1264 progress_indication
= floppy
->progress_indication
;
1266 /* Else assume format_unit has finished, and we're
1269 unsigned long flags
;
1272 local_irq_save(flags
);
1273 stat
= drive
->hwif
->INB(IDE_STATUS_REG
);
1274 local_irq_restore(flags
);
1276 progress_indication
= ((stat
& SEEK_STAT
) == 0) ? 0 : 0x10000;
1278 if (put_user(progress_indication
, arg
))
1285 * Return the current floppy capacity.
1287 static sector_t
idefloppy_capacity (ide_drive_t
*drive
)
1289 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1290 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
1296 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
1299 static int idefloppy_identify_device(ide_drive_t
*drive
, struct hd_driveid
*id
)
1301 struct idefloppy_id_gcw gcw
;
1303 *((u16
*) &gcw
) = id
->config
;
1306 /* kludge for Apple PowerBook internal zip */
1307 if ((gcw
.device_type
== 5) &&
1308 !strstr(id
->model
, "CD-ROM") &&
1309 strstr(id
->model
, "ZIP"))
1310 gcw
.device_type
= 0;
1313 if (gcw
.protocol
!= 2)
1314 printk(KERN_ERR
"ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1316 else if (gcw
.device_type
!= 0)
1317 printk(KERN_ERR
"ide-floppy: Device type (0x%02x) is not set "
1318 "to floppy\n", gcw
.device_type
);
1319 else if (!gcw
.removable
)
1320 printk(KERN_ERR
"ide-floppy: The removable flag is not set\n");
1321 else if (gcw
.drq_type
== 3) {
1322 printk(KERN_ERR
"ide-floppy: Sorry, DRQ type (0x%02x) not "
1323 "supported\n", gcw
.drq_type
);
1324 } else if (gcw
.packet_size
!= 0) {
1325 printk(KERN_ERR
"ide-floppy: Packet size (0x%02x) is not 12 "
1326 "bytes long\n", gcw
.packet_size
);
1332 #ifdef CONFIG_IDE_PROC_FS
1333 static void idefloppy_add_settings(ide_drive_t
*drive
)
1335 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1338 * drive setting name read/write data type min max mul_factor div_factor data pointer set function
1340 ide_add_setting(drive
, "bios_cyl", SETTING_RW
, TYPE_INT
, 0, 1023, 1, 1, &drive
->bios_cyl
, NULL
);
1341 ide_add_setting(drive
, "bios_head", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1, &drive
->bios_head
, NULL
);
1342 ide_add_setting(drive
, "bios_sect", SETTING_RW
, TYPE_BYTE
, 0, 63, 1, 1, &drive
->bios_sect
, NULL
);
1343 ide_add_setting(drive
, "ticks", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1, &floppy
->ticks
, NULL
);
1346 static inline void idefloppy_add_settings(ide_drive_t
*drive
) { ; }
1350 * Driver initialization.
1352 static void idefloppy_setup (ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
1354 struct idefloppy_id_gcw gcw
;
1356 *((u16
*) &gcw
) = drive
->id
->config
;
1357 floppy
->pc
= floppy
->pc_stack
;
1358 if (gcw
.drq_type
== 1)
1359 set_bit(IDEFLOPPY_DRQ_INTERRUPT
, &floppy
->flags
);
1361 * We used to check revisions here. At this point however
1362 * I'm giving up. Just assume they are all broken, its easier.
1364 * The actual reason for the workarounds was likely
1365 * a driver bug after all rather than a firmware bug,
1366 * and the workaround below used to hide it. It should
1367 * be fixed as of version 1.9, but to be on the safe side
1368 * we'll leave the limitation below for the 2.2.x tree.
1371 if (!strncmp(drive
->id
->model
, "IOMEGA ZIP 100 ATAPI", 20)) {
1372 set_bit(IDEFLOPPY_ZIP_DRIVE
, &floppy
->flags
);
1373 /* This value will be visible in the /proc/ide/hdx/settings */
1374 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
1375 blk_queue_max_sectors(drive
->queue
, 64);
1379 * Guess what? The IOMEGA Clik! drive also needs the
1380 * above fix. It makes nasty clicking noises without
1381 * it, so please don't remove this.
1383 if (strncmp(drive
->id
->model
, "IOMEGA Clik!", 11) == 0) {
1384 blk_queue_max_sectors(drive
->queue
, 64);
1385 set_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
);
1389 (void) ide_floppy_get_capacity(drive
);
1390 idefloppy_add_settings(drive
);
1393 static void ide_floppy_remove(ide_drive_t
*drive
)
1395 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1396 struct gendisk
*g
= floppy
->disk
;
1398 ide_proc_unregister_driver(drive
, floppy
->driver
);
1402 ide_floppy_put(floppy
);
1405 static void idefloppy_cleanup_obj(struct kref
*kref
)
1407 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
1408 ide_drive_t
*drive
= floppy
->drive
;
1409 struct gendisk
*g
= floppy
->disk
;
1411 drive
->driver_data
= NULL
;
1412 g
->private_data
= NULL
;
1417 #ifdef CONFIG_IDE_PROC_FS
1418 static int proc_idefloppy_read_capacity
1419 (char *page
, char **start
, off_t off
, int count
, int *eof
, void *data
)
1421 ide_drive_t
*drive
= (ide_drive_t
*)data
;
1424 len
= sprintf(page
,"%llu\n", (long long)idefloppy_capacity(drive
));
1425 PROC_IDE_READ_RETURN(page
,start
,off
,count
,eof
,len
);
1428 static ide_proc_entry_t idefloppy_proc
[] = {
1429 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
1430 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
1431 { NULL
, 0, NULL
, NULL
}
1433 #endif /* CONFIG_IDE_PROC_FS */
1435 static int ide_floppy_probe(ide_drive_t
*);
1437 static ide_driver_t idefloppy_driver
= {
1439 .owner
= THIS_MODULE
,
1440 .name
= "ide-floppy",
1441 .bus
= &ide_bus_type
,
1443 .probe
= ide_floppy_probe
,
1444 .remove
= ide_floppy_remove
,
1445 .version
= IDEFLOPPY_VERSION
,
1446 .media
= ide_floppy
,
1447 .supports_dsc_overlap
= 0,
1448 .do_request
= idefloppy_do_request
,
1449 .end_request
= idefloppy_do_end_request
,
1450 .error
= __ide_error
,
1451 .abort
= __ide_abort
,
1452 #ifdef CONFIG_IDE_PROC_FS
1453 .proc
= idefloppy_proc
,
1457 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
1459 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1460 struct ide_floppy_obj
*floppy
;
1465 debug_log("Reached %s\n", __func__
);
1467 if (!(floppy
= ide_floppy_get(disk
)))
1470 drive
= floppy
->drive
;
1474 if (floppy
->openers
== 1) {
1475 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
);
1478 idefloppy_create_test_unit_ready_cmd(&pc
);
1479 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1480 idefloppy_create_start_stop_cmd(&pc
, 1);
1481 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1484 if (ide_floppy_get_capacity(drive
)
1485 && (filp
->f_flags
& O_NDELAY
) == 0
1487 ** Allow O_NDELAY to open a drive without a disk, or with
1488 ** an unreadable disk, so that we can get the format
1489 ** capacity of the drive or begin the format - Sam
1493 goto out_put_floppy
;
1496 if (floppy
->wp
&& (filp
->f_mode
& 2)) {
1498 goto out_put_floppy
;
1500 set_bit(IDEFLOPPY_MEDIA_CHANGED
, &floppy
->flags
);
1501 /* IOMEGA Clik! drives do not support lock/unlock commands */
1502 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
)) {
1503 idefloppy_create_prevent_cmd(&pc
, 1);
1504 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1506 check_disk_change(inode
->i_bdev
);
1507 } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
)) {
1509 goto out_put_floppy
;
1515 ide_floppy_put(floppy
);
1519 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
1521 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1522 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1523 ide_drive_t
*drive
= floppy
->drive
;
1526 debug_log("Reached %s\n", __func__
);
1528 if (floppy
->openers
== 1) {
1529 /* IOMEGA Clik! drives do not support lock/unlock commands */
1530 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
)) {
1531 idefloppy_create_prevent_cmd(&pc
, 0);
1532 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1535 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
);
1540 ide_floppy_put(floppy
);
1545 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1547 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1548 ide_drive_t
*drive
= floppy
->drive
;
1550 geo
->heads
= drive
->bios_head
;
1551 geo
->sectors
= drive
->bios_sect
;
1552 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
1556 static int ide_floppy_lockdoor(idefloppy_floppy_t
*floppy
, idefloppy_pc_t
*pc
,
1557 unsigned long arg
, unsigned int cmd
)
1559 if (floppy
->openers
> 1)
1562 /* The IOMEGA Clik! Drive doesn't support this command -
1563 * no room for an eject mechanism */
1564 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
)) {
1565 int prevent
= arg
? 1 : 0;
1567 if (cmd
== CDROMEJECT
)
1570 idefloppy_create_prevent_cmd(pc
, prevent
);
1571 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1574 if (cmd
== CDROMEJECT
) {
1575 idefloppy_create_start_stop_cmd(pc
, 2);
1576 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1582 static int ide_floppy_format_unit(idefloppy_floppy_t
*floppy
,
1585 int blocks
, length
, flags
, err
= 0;
1588 if (floppy
->openers
> 1) {
1589 /* Don't format if someone is using the disk */
1590 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
);
1594 set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
);
1597 * Send ATAPI_FORMAT_UNIT to the drive.
1599 * Userland gives us the following structure:
1601 * struct idefloppy_format_command {
1607 * flags is a bitmask, currently, the only defined flag is:
1609 * 0x01 - verify media after format.
1611 if (get_user(blocks
, arg
) ||
1612 get_user(length
, arg
+1) ||
1613 get_user(flags
, arg
+2)) {
1618 (void) idefloppy_get_sfrp_bit(floppy
->drive
);
1619 idefloppy_create_format_unit_cmd(&pc
, blocks
, length
, flags
);
1621 if (idefloppy_queue_pc_tail(floppy
->drive
, &pc
))
1626 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
);
1631 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
1632 unsigned int cmd
, unsigned long arg
)
1634 struct block_device
*bdev
= inode
->i_bdev
;
1635 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1636 ide_drive_t
*drive
= floppy
->drive
;
1638 void __user
*argp
= (void __user
*)arg
;
1644 case CDROM_LOCKDOOR
:
1645 return ide_floppy_lockdoor(floppy
, &pc
, arg
, cmd
);
1646 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED
:
1648 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY
:
1649 return ide_floppy_get_format_capacities(drive
, argp
);
1650 case IDEFLOPPY_IOCTL_FORMAT_START
:
1651 if (!(file
->f_mode
& 2))
1654 return ide_floppy_format_unit(floppy
, (int __user
*)arg
);
1655 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS
:
1656 return idefloppy_get_format_progress(drive
, argp
);
1660 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1661 * and CDROM_SEND_PACKET (legacy) ioctls
1663 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
1664 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
1665 bdev
->bd_disk
, cmd
, argp
);
1670 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
1675 static int idefloppy_media_changed(struct gendisk
*disk
)
1677 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1678 ide_drive_t
*drive
= floppy
->drive
;
1680 /* do not scan partitions twice if this is a removable device */
1681 if (drive
->attach
) {
1685 return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED
, &floppy
->flags
);
1688 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
1690 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1691 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
1695 static struct block_device_operations idefloppy_ops
= {
1696 .owner
= THIS_MODULE
,
1697 .open
= idefloppy_open
,
1698 .release
= idefloppy_release
,
1699 .ioctl
= idefloppy_ioctl
,
1700 .getgeo
= idefloppy_getgeo
,
1701 .media_changed
= idefloppy_media_changed
,
1702 .revalidate_disk
= idefloppy_revalidate_disk
1705 static int ide_floppy_probe(ide_drive_t
*drive
)
1707 idefloppy_floppy_t
*floppy
;
1710 if (!strstr("ide-floppy", drive
->driver_req
))
1712 if (!drive
->present
)
1714 if (drive
->media
!= ide_floppy
)
1716 if (!idefloppy_identify_device (drive
, drive
->id
)) {
1717 printk (KERN_ERR
"ide-floppy: %s: not supported by this version of ide-floppy\n", drive
->name
);
1721 printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive
->name
);
1724 if ((floppy
= kzalloc(sizeof (idefloppy_floppy_t
), GFP_KERNEL
)) == NULL
) {
1725 printk (KERN_ERR
"ide-floppy: %s: Can't allocate a floppy structure\n", drive
->name
);
1729 g
= alloc_disk(1 << PARTN_BITS
);
1731 goto out_free_floppy
;
1733 ide_init_disk(g
, drive
);
1735 ide_proc_register_driver(drive
, &idefloppy_driver
);
1737 kref_init(&floppy
->kref
);
1739 floppy
->drive
= drive
;
1740 floppy
->driver
= &idefloppy_driver
;
1743 g
->private_data
= &floppy
->driver
;
1745 drive
->driver_data
= floppy
;
1747 idefloppy_setup (drive
, floppy
);
1749 g
->minors
= 1 << PARTN_BITS
;
1750 g
->driverfs_dev
= &drive
->gendev
;
1751 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
1752 g
->fops
= &idefloppy_ops
;
1763 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
1765 static void __exit
idefloppy_exit (void)
1767 driver_unregister(&idefloppy_driver
.gen_driver
);
1770 static int __init
idefloppy_init(void)
1772 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
1773 return driver_register(&idefloppy_driver
.gen_driver
);
1776 MODULE_ALIAS("ide:*m-floppy*");
1777 module_init(idefloppy_init
);
1778 module_exit(idefloppy_exit
);
1779 MODULE_LICENSE("GPL");