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
);
266 ide_atapi_write_zeros(drive
, bcount
);
268 ide_atapi_discard_data(drive
, bcount
);
272 static void idefloppy_update_buffers(ide_drive_t
*drive
,
273 struct ide_atapi_pc
*pc
)
275 struct request
*rq
= pc
->rq
;
276 struct bio
*bio
= rq
->bio
;
278 while ((bio
= rq
->bio
) != NULL
)
279 idefloppy_end_request(drive
, 1, 0);
283 * Generate a new packet command request in front of the request queue, before
284 * the current request so that it will be processed immediately, on the next
285 * pass through the driver.
287 static void idefloppy_queue_pc_head(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
,
290 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
292 ide_init_drive_cmd(rq
);
293 rq
->buffer
= (char *) pc
;
294 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
295 rq
->rq_disk
= floppy
->disk
;
296 (void) ide_do_drive_cmd(drive
, rq
, ide_preempt
);
299 static struct ide_atapi_pc
*idefloppy_next_pc_storage(ide_drive_t
*drive
)
301 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
303 if (floppy
->pc_stack_index
== IDEFLOPPY_PC_STACK
)
304 floppy
->pc_stack_index
= 0;
305 return (&floppy
->pc_stack
[floppy
->pc_stack_index
++]);
308 static struct request
*idefloppy_next_rq_storage(ide_drive_t
*drive
)
310 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
312 if (floppy
->rq_stack_index
== IDEFLOPPY_PC_STACK
)
313 floppy
->rq_stack_index
= 0;
314 return (&floppy
->rq_stack
[floppy
->rq_stack_index
++]);
317 static void idefloppy_request_sense_callback(ide_drive_t
*drive
)
319 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
320 u8
*buf
= floppy
->pc
->buf
;
322 debug_log("Reached %s\n", __func__
);
324 if (!floppy
->pc
->error
) {
325 floppy
->sense_key
= buf
[2] & 0x0F;
326 floppy
->asc
= buf
[12];
327 floppy
->ascq
= buf
[13];
328 floppy
->progress_indication
= buf
[15] & 0x80 ?
329 (u16
)get_unaligned((u16
*)&buf
[16]) : 0x10000;
331 if (floppy
->failed_pc
)
332 debug_log("pc = %x, sense key = %x, asc = %x,"
334 floppy
->failed_pc
->c
[0],
339 debug_log("sense key = %x, asc = %x, ascq = %x\n",
345 idefloppy_end_request(drive
, 1, 0);
347 printk(KERN_ERR
"Error in REQUEST SENSE itself - Aborting"
349 idefloppy_end_request(drive
, 0, 0);
353 /* General packet command callback function. */
354 static void idefloppy_pc_callback(ide_drive_t
*drive
)
356 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
358 debug_log("Reached %s\n", __func__
);
360 idefloppy_end_request(drive
, floppy
->pc
->error
? 0 : 1, 0);
363 static void idefloppy_init_pc(struct ide_atapi_pc
*pc
)
365 memset(pc
->c
, 0, 12);
369 pc
->buf
= pc
->pc_buf
;
370 pc
->buf_size
= IDEFLOPPY_PC_BUFFER_SIZE
;
371 pc
->idefloppy_callback
= &idefloppy_pc_callback
;
374 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc
*pc
)
376 idefloppy_init_pc(pc
);
377 pc
->c
[0] = GPCMD_REQUEST_SENSE
;
380 pc
->idefloppy_callback
= &idefloppy_request_sense_callback
;
384 * Called when an error was detected during the last packet command. We queue a
385 * request sense packet command in the head of the request list.
387 static void idefloppy_retry_pc(ide_drive_t
*drive
)
389 struct ide_atapi_pc
*pc
;
392 (void)ide_read_error(drive
);
393 pc
= idefloppy_next_pc_storage(drive
);
394 rq
= idefloppy_next_rq_storage(drive
);
395 idefloppy_create_request_sense_cmd(pc
);
396 idefloppy_queue_pc_head(drive
, pc
, rq
);
399 /* The usual interrupt handler called during a packet command. */
400 static ide_startstop_t
idefloppy_pc_intr(ide_drive_t
*drive
)
402 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
403 ide_hwif_t
*hwif
= drive
->hwif
;
404 struct ide_atapi_pc
*pc
= floppy
->pc
;
405 struct request
*rq
= pc
->rq
;
406 xfer_func_t
*xferfunc
;
412 debug_log("Reached %s interrupt handler\n", __func__
);
414 if (pc
->flags
& PC_FLAG_DMA_IN_PROGRESS
) {
415 dma_error
= hwif
->dma_ops
->dma_end(drive
);
417 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
418 rq_data_dir(rq
) ? "write" : "read");
419 pc
->flags
|= PC_FLAG_DMA_ERROR
;
421 pc
->xferred
= pc
->req_xfer
;
422 idefloppy_update_buffers(drive
, pc
);
424 debug_log("DMA finished\n");
427 /* Clear the interrupt */
428 stat
= ide_read_status(drive
);
430 /* No more interrupts */
431 if ((stat
& DRQ_STAT
) == 0) {
432 debug_log("Packet command completed, %d bytes transferred\n",
434 pc
->flags
&= ~PC_FLAG_DMA_IN_PROGRESS
;
436 local_irq_enable_in_hardirq();
438 if ((stat
& ERR_STAT
) || (pc
->flags
& PC_FLAG_DMA_ERROR
)) {
440 debug_log("%s: I/O error\n", drive
->name
);
442 if (pc
->c
[0] == GPCMD_REQUEST_SENSE
) {
443 printk(KERN_ERR
"ide-floppy: I/O error in "
444 "request sense command\n");
445 return ide_do_reset(drive
);
447 /* Retry operation */
448 idefloppy_retry_pc(drive
);
449 /* queued, but not started */
453 if (floppy
->failed_pc
== pc
)
454 floppy
->failed_pc
= NULL
;
455 /* Command finished - Call the callback function */
456 pc
->idefloppy_callback(drive
);
460 if (pc
->flags
& PC_FLAG_DMA_IN_PROGRESS
) {
461 pc
->flags
&= ~PC_FLAG_DMA_IN_PROGRESS
;
462 printk(KERN_ERR
"ide-floppy: The floppy wants to issue "
463 "more interrupts in DMA mode\n");
465 return ide_do_reset(drive
);
468 /* Get the number of bytes to transfer */
469 bcount
= (hwif
->INB(hwif
->io_ports
.lbah_addr
) << 8) |
470 hwif
->INB(hwif
->io_ports
.lbam_addr
);
471 /* on this interrupt */
472 ireason
= hwif
->INB(hwif
->io_ports
.nsect_addr
);
475 printk(KERN_ERR
"ide-floppy: CoD != 0 in %s\n", __func__
);
476 return ide_do_reset(drive
);
478 if (((ireason
& IO
) == IO
) == !!(pc
->flags
& PC_FLAG_WRITING
)) {
479 /* Hopefully, we will never get here */
480 printk(KERN_ERR
"ide-floppy: We wanted to %s, ",
481 (ireason
& IO
) ? "Write" : "Read");
482 printk(KERN_ERR
"but the floppy wants us to %s !\n",
483 (ireason
& IO
) ? "Read" : "Write");
484 return ide_do_reset(drive
);
486 if (!(pc
->flags
& PC_FLAG_WRITING
)) {
487 /* Reading - Check that we have enough space */
488 temp
= pc
->xferred
+ bcount
;
489 if (temp
> pc
->req_xfer
) {
490 if (temp
> pc
->buf_size
) {
491 printk(KERN_ERR
"ide-floppy: The floppy wants "
492 "to send us more data than expected "
493 "- discarding data\n");
494 ide_atapi_discard_data(drive
, bcount
);
496 ide_set_handler(drive
,
502 debug_log("The floppy wants to send us more data than"
503 " expected - allowing transfer\n");
506 if (pc
->flags
& PC_FLAG_WRITING
)
507 xferfunc
= hwif
->output_data
;
509 xferfunc
= hwif
->input_data
;
512 xferfunc(drive
, NULL
, pc
->cur_pos
, bcount
);
514 ide_floppy_io_buffers(drive
, pc
, bcount
,
515 !!(pc
->flags
& PC_FLAG_WRITING
));
517 /* Update the current position */
518 pc
->xferred
+= bcount
;
519 pc
->cur_pos
+= bcount
;
521 /* And set the interrupt handler again */
522 ide_set_handler(drive
, &idefloppy_pc_intr
, IDEFLOPPY_WAIT_CMD
, NULL
);
527 * This is the original routine that did the packet transfer.
528 * It fails at high speeds on the Iomega ZIP drive, so there's a slower version
529 * for that drive below. The algorithm is chosen based on drive type
531 static ide_startstop_t
idefloppy_transfer_pc(ide_drive_t
*drive
)
533 ide_hwif_t
*hwif
= drive
->hwif
;
534 ide_startstop_t startstop
;
535 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
538 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
, BUSY_STAT
, WAIT_READY
)) {
539 printk(KERN_ERR
"ide-floppy: Strange, packet command "
540 "initiated yet DRQ isn't asserted\n");
543 ireason
= hwif
->INB(hwif
->io_ports
.nsect_addr
);
544 if ((ireason
& CD
) == 0 || (ireason
& IO
)) {
545 printk(KERN_ERR
"ide-floppy: (IO,CoD) != (0,1) while "
546 "issuing a packet command\n");
547 return ide_do_reset(drive
);
550 /* Set the interrupt routine */
551 ide_set_handler(drive
, &idefloppy_pc_intr
, IDEFLOPPY_WAIT_CMD
, NULL
);
553 /* Send the actual packet */
554 hwif
->output_data(drive
, NULL
, floppy
->pc
->c
, 12);
561 * What we have here is a classic case of a top half / bottom half interrupt
562 * service routine. In interrupt mode, the device sends an interrupt to signal
563 * that it is ready to receive a packet. However, we need to delay about 2-3
564 * ticks before issuing the packet or we gets in trouble.
566 * So, follow carefully. transfer_pc1 is called as an interrupt (or directly).
567 * In either case, when the device says it's ready for a packet, we schedule
568 * the packet transfer to occur about 2-3 ticks later in transfer_pc2.
570 static int idefloppy_transfer_pc2(ide_drive_t
*drive
)
572 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
574 /* Send the actual packet */
575 drive
->hwif
->output_data(drive
, NULL
, floppy
->pc
->c
, 12);
577 /* Timeout for the packet command */
578 return IDEFLOPPY_WAIT_CMD
;
581 static ide_startstop_t
idefloppy_transfer_pc1(ide_drive_t
*drive
)
583 ide_hwif_t
*hwif
= drive
->hwif
;
584 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
585 ide_startstop_t startstop
;
588 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
, BUSY_STAT
, WAIT_READY
)) {
589 printk(KERN_ERR
"ide-floppy: Strange, packet command "
590 "initiated yet DRQ isn't asserted\n");
593 ireason
= hwif
->INB(hwif
->io_ports
.nsect_addr
);
594 if ((ireason
& CD
) == 0 || (ireason
& IO
)) {
595 printk(KERN_ERR
"ide-floppy: (IO,CoD) != (0,1) "
596 "while issuing a packet command\n");
597 return ide_do_reset(drive
);
600 * The following delay solves a problem with ATAPI Zip 100 drives
601 * where the Busy flag was apparently being deasserted before the
602 * unit was ready to receive data. This was happening on a
603 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
604 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
605 * used until after the packet is moved in about 50 msec.
608 ide_set_handler(drive
, &idefloppy_pc_intr
, floppy
->ticks
,
609 &idefloppy_transfer_pc2
);
613 static void ide_floppy_report_error(idefloppy_floppy_t
*floppy
,
614 struct ide_atapi_pc
*pc
)
616 /* supress error messages resulting from Medium not present */
617 if (floppy
->sense_key
== 0x02 &&
618 floppy
->asc
== 0x3a &&
619 floppy
->ascq
== 0x00)
622 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
623 "asc = %2x, ascq = %2x\n",
624 floppy
->drive
->name
, pc
->c
[0], floppy
->sense_key
,
625 floppy
->asc
, floppy
->ascq
);
629 static ide_startstop_t
idefloppy_issue_pc(ide_drive_t
*drive
,
630 struct ide_atapi_pc
*pc
)
632 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
633 ide_hwif_t
*hwif
= drive
->hwif
;
634 ide_handler_t
*pkt_xfer_routine
;
638 if (floppy
->failed_pc
== NULL
&&
639 pc
->c
[0] != GPCMD_REQUEST_SENSE
)
640 floppy
->failed_pc
= pc
;
641 /* Set the current packet command */
644 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
) {
645 if (!(pc
->flags
& PC_FLAG_SUPPRESS_ERROR
))
646 ide_floppy_report_error(floppy
, pc
);
648 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
650 floppy
->failed_pc
= NULL
;
651 pc
->idefloppy_callback(drive
);
655 debug_log("Retry number - %d\n", pc
->retries
);
658 /* We haven't transferred any data yet */
660 pc
->cur_pos
= pc
->buf
;
661 bcount
= min(pc
->req_xfer
, 63 * 1024);
663 if (pc
->flags
& PC_FLAG_DMA_ERROR
) {
664 pc
->flags
&= ~PC_FLAG_DMA_ERROR
;
669 if ((pc
->flags
& PC_FLAG_DMA_RECOMMENDED
) && drive
->using_dma
)
670 dma
= !hwif
->dma_ops
->dma_setup(drive
);
672 ide_pktcmd_tf_load(drive
, IDE_TFLAG_NO_SELECT_MASK
|
673 IDE_TFLAG_OUT_DEVICE
, bcount
, dma
);
676 /* Begin DMA, if necessary */
677 pc
->flags
|= PC_FLAG_DMA_IN_PROGRESS
;
678 hwif
->dma_ops
->dma_start(drive
);
681 /* Can we transfer the packet when we get the interrupt or wait? */
682 if (floppy
->flags
& IDEFLOPPY_FLAG_ZIP_DRIVE
) {
684 pkt_xfer_routine
= &idefloppy_transfer_pc1
;
687 pkt_xfer_routine
= &idefloppy_transfer_pc
;
690 if (floppy
->flags
& IDEFLOPPY_FLAG_DRQ_INTERRUPT
) {
691 /* Issue the packet command */
692 ide_execute_command(drive
, WIN_PACKETCMD
,
698 /* Issue the packet command */
699 hwif
->OUTBSYNC(drive
, WIN_PACKETCMD
,
700 hwif
->io_ports
.command_addr
);
701 return (*pkt_xfer_routine
) (drive
);
705 static void idefloppy_rw_callback(ide_drive_t
*drive
)
707 debug_log("Reached %s\n", __func__
);
709 idefloppy_end_request(drive
, 1, 0);
713 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc
*pc
, int prevent
)
715 debug_log("creating prevent removal command, prevent = %d\n", prevent
);
717 idefloppy_init_pc(pc
);
718 pc
->c
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
722 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc
*pc
)
724 idefloppy_init_pc(pc
);
725 pc
->c
[0] = GPCMD_READ_FORMAT_CAPACITIES
;
731 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc
*pc
, int b
,
734 idefloppy_init_pc(pc
);
735 pc
->c
[0] = GPCMD_FORMAT_UNIT
;
738 memset(pc
->buf
, 0, 12);
740 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
742 if (flags
& 1) /* Verify bit on... */
743 pc
->buf
[1] ^= 0x20; /* ... turn off DCRT bit */
746 put_unaligned(cpu_to_be32(b
), (unsigned int *)(&pc
->buf
[4]));
747 put_unaligned(cpu_to_be32(l
), (unsigned int *)(&pc
->buf
[8]));
749 pc
->flags
|= PC_FLAG_WRITING
;
752 /* A mode sense command is used to "sense" floppy parameters. */
753 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc
*pc
,
754 u8 page_code
, u8 type
)
756 u16 length
= 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
758 idefloppy_init_pc(pc
);
759 pc
->c
[0] = GPCMD_MODE_SENSE_10
;
761 pc
->c
[2] = page_code
+ (type
<< 6);
764 case IDEFLOPPY_CAPABILITIES_PAGE
:
767 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
771 printk(KERN_ERR
"ide-floppy: unsupported page code "
772 "in create_mode_sense_cmd\n");
774 put_unaligned(cpu_to_be16(length
), (u16
*) &pc
->c
[7]);
775 pc
->req_xfer
= length
;
778 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc
*pc
, int start
)
780 idefloppy_init_pc(pc
);
781 pc
->c
[0] = GPCMD_START_STOP_UNIT
;
785 static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc
*pc
)
787 idefloppy_init_pc(pc
);
788 pc
->c
[0] = GPCMD_TEST_UNIT_READY
;
791 static void idefloppy_create_rw_cmd(idefloppy_floppy_t
*floppy
,
792 struct ide_atapi_pc
*pc
, struct request
*rq
,
793 unsigned long sector
)
795 int block
= sector
/ floppy
->bs_factor
;
796 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
797 int cmd
= rq_data_dir(rq
);
799 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
802 idefloppy_init_pc(pc
);
803 pc
->c
[0] = cmd
== READ
? GPCMD_READ_10
: GPCMD_WRITE_10
;
804 put_unaligned(cpu_to_be16(blocks
), (unsigned short *)&pc
->c
[7]);
805 put_unaligned(cpu_to_be32(block
), (unsigned int *) &pc
->c
[2]);
807 pc
->idefloppy_callback
= &idefloppy_rw_callback
;
809 pc
->b_count
= cmd
== READ
? 0 : rq
->bio
->bi_size
;
810 if (rq
->cmd_flags
& REQ_RW
)
811 pc
->flags
|= PC_FLAG_WRITING
;
813 pc
->req_xfer
= pc
->buf_size
= blocks
* floppy
->block_size
;
814 pc
->flags
|= PC_FLAG_DMA_RECOMMENDED
;
817 static void idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
,
818 struct ide_atapi_pc
*pc
, struct request
*rq
)
820 idefloppy_init_pc(pc
);
821 pc
->idefloppy_callback
= &idefloppy_rw_callback
;
822 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
824 pc
->b_count
= rq
->data_len
;
825 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
826 pc
->flags
|= PC_FLAG_WRITING
;
829 pc
->flags
|= PC_FLAG_DMA_RECOMMENDED
;
831 * possibly problematic, doesn't look like ide-floppy correctly
832 * handled scattered requests if dma fails...
834 pc
->req_xfer
= pc
->buf_size
= rq
->data_len
;
837 static ide_startstop_t
idefloppy_do_request(ide_drive_t
*drive
,
838 struct request
*rq
, sector_t block_s
)
840 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
841 struct ide_atapi_pc
*pc
;
842 unsigned long block
= (unsigned long)block_s
;
844 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
845 rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
846 rq
->cmd_type
, rq
->errors
);
847 debug_log("sector: %ld, nr_sectors: %ld, "
848 "current_nr_sectors: %d\n", (long)rq
->sector
,
849 rq
->nr_sectors
, rq
->current_nr_sectors
);
851 if (rq
->errors
>= ERROR_MAX
) {
852 if (floppy
->failed_pc
)
853 ide_floppy_report_error(floppy
, floppy
->failed_pc
);
855 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
857 idefloppy_end_request(drive
, 0, 0);
860 if (blk_fs_request(rq
)) {
861 if (((long)rq
->sector
% floppy
->bs_factor
) ||
862 (rq
->nr_sectors
% floppy
->bs_factor
)) {
863 printk(KERN_ERR
"%s: unsupported r/w request size\n",
865 idefloppy_end_request(drive
, 0, 0);
868 pc
= idefloppy_next_pc_storage(drive
);
869 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
870 } else if (blk_special_request(rq
)) {
871 pc
= (struct ide_atapi_pc
*) rq
->buffer
;
872 } else if (blk_pc_request(rq
)) {
873 pc
= idefloppy_next_pc_storage(drive
);
874 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
876 blk_dump_rq_flags(rq
,
877 "ide-floppy: unsupported command in queue");
878 idefloppy_end_request(drive
, 0, 0);
883 return idefloppy_issue_pc(drive
, pc
);
887 * Add a special packet command request to the tail of the request queue,
888 * and wait for it to be serviced.
890 static int idefloppy_queue_pc_tail(ide_drive_t
*drive
, struct ide_atapi_pc
*pc
)
892 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
895 ide_init_drive_cmd(&rq
);
896 rq
.buffer
= (char *) pc
;
897 rq
.cmd_type
= REQ_TYPE_SPECIAL
;
898 rq
.rq_disk
= floppy
->disk
;
900 return ide_do_drive_cmd(drive
, &rq
, ide_wait
);
904 * Look at the flexible disk page parameters. We ignore the CHS capacity
905 * parameters and use the LBA parameters instead.
907 static int ide_floppy_get_flexible_disk_page(ide_drive_t
*drive
)
909 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
910 struct ide_atapi_pc pc
;
912 int capacity
, lba_capacity
;
913 u16 transfer_rate
, sector_size
, cyls
, rpm
;
916 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
,
919 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
920 printk(KERN_ERR
"ide-floppy: Can't get flexible disk page"
924 floppy
->wp
= !!(pc
.buf
[3] & 0x80);
925 set_disk_ro(floppy
->disk
, floppy
->wp
);
928 transfer_rate
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 2]);
929 sector_size
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 6]);
930 cyls
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 8]);
931 rpm
= be16_to_cpu(*(u16
*)&pc
.buf
[8 + 28]);
932 heads
= pc
.buf
[8 + 4];
933 sectors
= pc
.buf
[8 + 5];
935 capacity
= cyls
* heads
* sectors
* sector_size
;
937 if (memcmp(page
, &floppy
->flexible_disk_page
, 32))
938 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
939 "%d sector size, %d rpm\n",
940 drive
->name
, capacity
/ 1024, cyls
, heads
,
941 sectors
, transfer_rate
/ 8, sector_size
, rpm
);
943 memcpy(&floppy
->flexible_disk_page
, page
, 32);
944 drive
->bios_cyl
= cyls
;
945 drive
->bios_head
= heads
;
946 drive
->bios_sect
= sectors
;
947 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
949 if (capacity
< lba_capacity
) {
950 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
951 "bytes, but the drive only handles %d\n",
952 drive
->name
, lba_capacity
, capacity
);
953 floppy
->blocks
= floppy
->block_size
?
954 capacity
/ floppy
->block_size
: 0;
959 static int idefloppy_get_sfrp_bit(ide_drive_t
*drive
)
961 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
962 struct ide_atapi_pc pc
;
965 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_CAPABILITIES_PAGE
,
968 pc
.flags
|= PC_FLAG_SUPPRESS_ERROR
;
969 if (idefloppy_queue_pc_tail(drive
, &pc
))
972 floppy
->srfp
= pc
.buf
[8 + 2] & 0x40;
977 * Determine if a media is present in the floppy drive, and if so, its LBA
980 static int ide_floppy_get_capacity(ide_drive_t
*drive
)
982 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
983 struct ide_atapi_pc pc
;
985 u8 header_len
, desc_cnt
;
986 int i
, rc
= 1, blocks
, length
;
989 drive
->bios_head
= drive
->bios_sect
= 0;
991 floppy
->bs_factor
= 1;
992 set_capacity(floppy
->disk
, 0);
994 idefloppy_create_read_capacity_cmd(&pc
);
995 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
996 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
999 header_len
= pc
.buf
[3];
1000 cap_desc
= &pc
.buf
[4];
1001 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
1003 for (i
= 0; i
< desc_cnt
; i
++) {
1004 unsigned int desc_start
= 4 + i
*8;
1006 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
1007 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
1009 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
1010 i
, blocks
* length
/ 1024, blocks
, length
);
1015 * the code below is valid only for the 1st descriptor, ie i=0
1018 switch (pc
.buf
[desc_start
+ 4] & 0x03) {
1019 /* Clik! drive returns this instead of CAPACITY_CURRENT */
1020 case CAPACITY_UNFORMATTED
:
1021 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
1023 * If it is not a clik drive, break out
1024 * (maintains previous driver behaviour)
1027 case CAPACITY_CURRENT
:
1028 /* Normal Zip/LS-120 disks */
1029 if (memcmp(cap_desc
, &floppy
->cap_desc
, 8))
1030 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
1031 "sector size\n", drive
->name
,
1032 blocks
* length
/ 1024, blocks
, length
);
1033 memcpy(&floppy
->cap_desc
, cap_desc
, 8);
1035 if (!length
|| length
% 512) {
1036 printk(KERN_NOTICE
"%s: %d bytes block size "
1037 "not supported\n", drive
->name
, length
);
1039 floppy
->blocks
= blocks
;
1040 floppy
->block_size
= length
;
1041 floppy
->bs_factor
= length
/ 512;
1042 if (floppy
->bs_factor
!= 1)
1043 printk(KERN_NOTICE
"%s: warning: non "
1044 "512 bytes block size not "
1045 "fully supported\n",
1050 case CAPACITY_NO_CARTRIDGE
:
1052 * This is a KERN_ERR so it appears on screen
1053 * for the user to see
1055 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
1057 case CAPACITY_INVALID
:
1058 printk(KERN_ERR
"%s: Invalid capacity for disk "
1059 "in drive\n", drive
->name
);
1062 debug_log("Descriptor 0 Code: %d\n",
1063 pc
.buf
[desc_start
+ 4] & 0x03);
1066 /* Clik! disk does not support get_flexible_disk_page */
1067 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
))
1068 (void) ide_floppy_get_flexible_disk_page(drive
);
1070 set_capacity(floppy
->disk
, floppy
->blocks
* floppy
->bs_factor
);
1075 * Obtain the list of formattable capacities.
1076 * Very similar to ide_floppy_get_capacity, except that we push the capacity
1077 * descriptors to userland, instead of our own structures.
1079 * Userland gives us the following structure:
1081 * struct idefloppy_format_capacities {
1089 * userland initializes nformats to the number of allocated formats[] records.
1090 * On exit we set nformats to the number of records we've actually initialized.
1093 static int ide_floppy_get_format_capacities(ide_drive_t
*drive
, int __user
*arg
)
1095 struct ide_atapi_pc pc
;
1096 u8 header_len
, desc_cnt
;
1097 int i
, blocks
, length
, u_array_size
, u_index
;
1100 if (get_user(u_array_size
, arg
))
1103 if (u_array_size
<= 0)
1106 idefloppy_create_read_capacity_cmd(&pc
);
1107 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1108 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
1111 header_len
= pc
.buf
[3];
1112 desc_cnt
= header_len
/ 8; /* capacity descriptor of 8 bytes */
1118 * We always skip the first capacity descriptor. That's the current
1119 * capacity. We are interested in the remaining descriptors, the
1120 * formattable capacities.
1122 for (i
= 1; i
< desc_cnt
; i
++) {
1123 unsigned int desc_start
= 4 + i
*8;
1125 if (u_index
>= u_array_size
)
1126 break; /* User-supplied buffer too small */
1128 blocks
= be32_to_cpu(*(u32
*)&pc
.buf
[desc_start
]);
1129 length
= be16_to_cpu(*(u16
*)&pc
.buf
[desc_start
+ 6]);
1131 if (put_user(blocks
, argp
))
1135 if (put_user(length
, argp
))
1142 if (put_user(u_index
, arg
))
1148 * Get ATAPI_FORMAT_UNIT progress indication.
1150 * Userland gives a pointer to an int. The int is set to a progress
1151 * indicator 0-65536, with 65536=100%.
1153 * If the drive does not support format progress indication, we just check
1154 * the dsc bit, and return either 0 or 65536.
1157 static int idefloppy_get_format_progress(ide_drive_t
*drive
, int __user
*arg
)
1159 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1160 struct ide_atapi_pc pc
;
1161 int progress_indication
= 0x10000;
1164 idefloppy_create_request_sense_cmd(&pc
);
1165 if (idefloppy_queue_pc_tail(drive
, &pc
))
1168 if (floppy
->sense_key
== 2 &&
1171 progress_indication
= floppy
->progress_indication
;
1173 /* Else assume format_unit has finished, and we're at 0x10000 */
1175 unsigned long flags
;
1178 local_irq_save(flags
);
1179 stat
= ide_read_status(drive
);
1180 local_irq_restore(flags
);
1182 progress_indication
= ((stat
& SEEK_STAT
) == 0) ? 0 : 0x10000;
1184 if (put_user(progress_indication
, arg
))
1190 static sector_t
idefloppy_capacity(ide_drive_t
*drive
)
1192 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1193 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
1199 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
1202 static int idefloppy_identify_device(ide_drive_t
*drive
, struct hd_driveid
*id
)
1205 u8 device_type
, protocol
, removable
, drq_type
, packet_size
;
1207 *((u16
*) &gcw
) = id
->config
;
1209 device_type
= gcw
[1] & 0x1F;
1210 removable
= (gcw
[0] & 0x80) >> 7;
1211 protocol
= (gcw
[1] & 0xC0) >> 6;
1212 drq_type
= (gcw
[0] & 0x60) >> 5;
1213 packet_size
= gcw
[0] & 0x03;
1216 /* kludge for Apple PowerBook internal zip */
1217 if (device_type
== 5 &&
1218 !strstr(id
->model
, "CD-ROM") && strstr(id
->model
, "ZIP"))
1223 printk(KERN_ERR
"ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1225 else if (device_type
!= 0)
1226 printk(KERN_ERR
"ide-floppy: Device type (0x%02x) is not set "
1227 "to floppy\n", device_type
);
1228 else if (!removable
)
1229 printk(KERN_ERR
"ide-floppy: The removable flag is not set\n");
1230 else if (drq_type
== 3)
1231 printk(KERN_ERR
"ide-floppy: Sorry, DRQ type (0x%02x) not "
1232 "supported\n", drq_type
);
1233 else if (packet_size
!= 0)
1234 printk(KERN_ERR
"ide-floppy: Packet size (0x%02x) is not 12 "
1235 "bytes\n", packet_size
);
1241 #ifdef CONFIG_IDE_PROC_FS
1242 static void idefloppy_add_settings(ide_drive_t
*drive
)
1244 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1246 ide_add_setting(drive
, "bios_cyl", SETTING_RW
, TYPE_INT
, 0, 1023, 1, 1,
1247 &drive
->bios_cyl
, NULL
);
1248 ide_add_setting(drive
, "bios_head", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1249 &drive
->bios_head
, NULL
);
1250 ide_add_setting(drive
, "bios_sect", SETTING_RW
, TYPE_BYTE
, 0, 63, 1, 1,
1251 &drive
->bios_sect
, NULL
);
1252 ide_add_setting(drive
, "ticks", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1,
1253 &floppy
->ticks
, NULL
);
1256 static inline void idefloppy_add_settings(ide_drive_t
*drive
) { ; }
1259 static void idefloppy_setup(ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
1263 *((u16
*) &gcw
) = drive
->id
->config
;
1264 floppy
->pc
= floppy
->pc_stack
;
1266 if (((gcw
[0] & 0x60) >> 5) == 1)
1267 floppy
->flags
|= IDEFLOPPY_FLAG_DRQ_INTERRUPT
;
1269 * We used to check revisions here. At this point however I'm giving up.
1270 * Just assume they are all broken, its easier.
1272 * The actual reason for the workarounds was likely a driver bug after
1273 * all rather than a firmware bug, and the workaround below used to hide
1274 * it. It should be fixed as of version 1.9, but to be on the safe side
1275 * we'll leave the limitation below for the 2.2.x tree.
1277 if (!strncmp(drive
->id
->model
, "IOMEGA ZIP 100 ATAPI", 20)) {
1278 floppy
->flags
|= IDEFLOPPY_FLAG_ZIP_DRIVE
;
1279 /* This value will be visible in the /proc/ide/hdx/settings */
1280 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
1281 blk_queue_max_sectors(drive
->queue
, 64);
1285 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1286 * nasty clicking noises without it, so please don't remove this.
1288 if (strncmp(drive
->id
->model
, "IOMEGA Clik!", 11) == 0) {
1289 blk_queue_max_sectors(drive
->queue
, 64);
1290 floppy
->flags
|= IDEFLOPPY_FLAG_CLIK_DRIVE
;
1293 (void) ide_floppy_get_capacity(drive
);
1294 idefloppy_add_settings(drive
);
1297 static void ide_floppy_remove(ide_drive_t
*drive
)
1299 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1300 struct gendisk
*g
= floppy
->disk
;
1302 ide_proc_unregister_driver(drive
, floppy
->driver
);
1306 ide_floppy_put(floppy
);
1309 static void idefloppy_cleanup_obj(struct kref
*kref
)
1311 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
1312 ide_drive_t
*drive
= floppy
->drive
;
1313 struct gendisk
*g
= floppy
->disk
;
1315 drive
->driver_data
= NULL
;
1316 g
->private_data
= NULL
;
1321 #ifdef CONFIG_IDE_PROC_FS
1322 static int proc_idefloppy_read_capacity(char *page
, char **start
, off_t off
,
1323 int count
, int *eof
, void *data
)
1325 ide_drive_t
*drive
= (ide_drive_t
*)data
;
1328 len
= sprintf(page
, "%llu\n", (long long)idefloppy_capacity(drive
));
1329 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1332 static ide_proc_entry_t idefloppy_proc
[] = {
1333 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
1334 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
1335 { NULL
, 0, NULL
, NULL
}
1337 #endif /* CONFIG_IDE_PROC_FS */
1339 static int ide_floppy_probe(ide_drive_t
*);
1341 static ide_driver_t idefloppy_driver
= {
1343 .owner
= THIS_MODULE
,
1344 .name
= "ide-floppy",
1345 .bus
= &ide_bus_type
,
1347 .probe
= ide_floppy_probe
,
1348 .remove
= ide_floppy_remove
,
1349 .version
= IDEFLOPPY_VERSION
,
1350 .media
= ide_floppy
,
1351 .supports_dsc_overlap
= 0,
1352 .do_request
= idefloppy_do_request
,
1353 .end_request
= idefloppy_end_request
,
1354 .error
= __ide_error
,
1355 .abort
= __ide_abort
,
1356 #ifdef CONFIG_IDE_PROC_FS
1357 .proc
= idefloppy_proc
,
1361 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
1363 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1364 struct ide_floppy_obj
*floppy
;
1366 struct ide_atapi_pc pc
;
1369 debug_log("Reached %s\n", __func__
);
1371 floppy
= ide_floppy_get(disk
);
1375 drive
= floppy
->drive
;
1379 if (floppy
->openers
== 1) {
1380 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1383 idefloppy_create_test_unit_ready_cmd(&pc
);
1384 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1385 idefloppy_create_start_stop_cmd(&pc
, 1);
1386 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1389 if (ide_floppy_get_capacity(drive
)
1390 && (filp
->f_flags
& O_NDELAY
) == 0
1392 * Allow O_NDELAY to open a drive without a disk, or with an
1393 * unreadable disk, so that we can get the format capacity
1394 * of the drive or begin the format - Sam
1398 goto out_put_floppy
;
1401 if (floppy
->wp
&& (filp
->f_mode
& 2)) {
1403 goto out_put_floppy
;
1405 floppy
->flags
|= IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1406 /* IOMEGA Clik! drives do not support lock/unlock commands */
1407 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1408 idefloppy_create_prevent_cmd(&pc
, 1);
1409 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1411 check_disk_change(inode
->i_bdev
);
1412 } else if (floppy
->flags
& IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
) {
1414 goto out_put_floppy
;
1420 ide_floppy_put(floppy
);
1424 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
1426 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1427 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1428 ide_drive_t
*drive
= floppy
->drive
;
1429 struct ide_atapi_pc pc
;
1431 debug_log("Reached %s\n", __func__
);
1433 if (floppy
->openers
== 1) {
1434 /* IOMEGA Clik! drives do not support lock/unlock commands */
1435 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1436 idefloppy_create_prevent_cmd(&pc
, 0);
1437 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1440 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1445 ide_floppy_put(floppy
);
1450 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1452 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1453 ide_drive_t
*drive
= floppy
->drive
;
1455 geo
->heads
= drive
->bios_head
;
1456 geo
->sectors
= drive
->bios_sect
;
1457 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
1461 static int ide_floppy_lockdoor(idefloppy_floppy_t
*floppy
,
1462 struct ide_atapi_pc
*pc
, unsigned long arg
, unsigned int cmd
)
1464 if (floppy
->openers
> 1)
1467 /* The IOMEGA Clik! Drive doesn't support this command -
1468 * no room for an eject mechanism */
1469 if (!(floppy
->flags
& IDEFLOPPY_FLAG_CLIK_DRIVE
)) {
1470 int prevent
= arg
? 1 : 0;
1472 if (cmd
== CDROMEJECT
)
1475 idefloppy_create_prevent_cmd(pc
, prevent
);
1476 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1479 if (cmd
== CDROMEJECT
) {
1480 idefloppy_create_start_stop_cmd(pc
, 2);
1481 (void) idefloppy_queue_pc_tail(floppy
->drive
, pc
);
1487 static int ide_floppy_format_unit(idefloppy_floppy_t
*floppy
,
1490 int blocks
, length
, flags
, err
= 0;
1491 struct ide_atapi_pc pc
;
1493 if (floppy
->openers
> 1) {
1494 /* Don't format if someone is using the disk */
1495 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1499 floppy
->flags
|= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1502 * Send ATAPI_FORMAT_UNIT to the drive.
1504 * Userland gives us the following structure:
1506 * struct idefloppy_format_command {
1512 * flags is a bitmask, currently, the only defined flag is:
1514 * 0x01 - verify media after format.
1516 if (get_user(blocks
, arg
) ||
1517 get_user(length
, arg
+1) ||
1518 get_user(flags
, arg
+2)) {
1523 (void) idefloppy_get_sfrp_bit(floppy
->drive
);
1524 idefloppy_create_format_unit_cmd(&pc
, blocks
, length
, flags
);
1526 if (idefloppy_queue_pc_tail(floppy
->drive
, &pc
))
1531 floppy
->flags
&= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS
;
1536 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
1537 unsigned int cmd
, unsigned long arg
)
1539 struct block_device
*bdev
= inode
->i_bdev
;
1540 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1541 ide_drive_t
*drive
= floppy
->drive
;
1542 struct ide_atapi_pc pc
;
1543 void __user
*argp
= (void __user
*)arg
;
1549 case CDROM_LOCKDOOR
:
1550 return ide_floppy_lockdoor(floppy
, &pc
, arg
, cmd
);
1551 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED
:
1553 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY
:
1554 return ide_floppy_get_format_capacities(drive
, argp
);
1555 case IDEFLOPPY_IOCTL_FORMAT_START
:
1556 if (!(file
->f_mode
& 2))
1559 return ide_floppy_format_unit(floppy
, (int __user
*)arg
);
1560 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS
:
1561 return idefloppy_get_format_progress(drive
, argp
);
1565 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1566 * and CDROM_SEND_PACKET (legacy) ioctls
1568 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
1569 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
1570 bdev
->bd_disk
, cmd
, argp
);
1575 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
1580 static int idefloppy_media_changed(struct gendisk
*disk
)
1582 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1583 ide_drive_t
*drive
= floppy
->drive
;
1586 /* do not scan partitions twice if this is a removable device */
1587 if (drive
->attach
) {
1591 ret
= !!(floppy
->flags
& IDEFLOPPY_FLAG_MEDIA_CHANGED
);
1592 floppy
->flags
&= ~IDEFLOPPY_FLAG_MEDIA_CHANGED
;
1596 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
1598 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1599 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
1603 static struct block_device_operations idefloppy_ops
= {
1604 .owner
= THIS_MODULE
,
1605 .open
= idefloppy_open
,
1606 .release
= idefloppy_release
,
1607 .ioctl
= idefloppy_ioctl
,
1608 .getgeo
= idefloppy_getgeo
,
1609 .media_changed
= idefloppy_media_changed
,
1610 .revalidate_disk
= idefloppy_revalidate_disk
1613 static int ide_floppy_probe(ide_drive_t
*drive
)
1615 idefloppy_floppy_t
*floppy
;
1618 if (!strstr("ide-floppy", drive
->driver_req
))
1620 if (!drive
->present
)
1622 if (drive
->media
!= ide_floppy
)
1624 if (!idefloppy_identify_device(drive
, drive
->id
)) {
1625 printk(KERN_ERR
"ide-floppy: %s: not supported by this version"
1626 " of ide-floppy\n", drive
->name
);
1630 printk(KERN_INFO
"ide-floppy: passing drive %s to ide-scsi"
1631 " emulation.\n", drive
->name
);
1634 floppy
= kzalloc(sizeof(idefloppy_floppy_t
), GFP_KERNEL
);
1636 printk(KERN_ERR
"ide-floppy: %s: Can't allocate a floppy"
1637 " structure\n", drive
->name
);
1641 g
= alloc_disk(1 << PARTN_BITS
);
1643 goto out_free_floppy
;
1645 ide_init_disk(g
, drive
);
1647 ide_proc_register_driver(drive
, &idefloppy_driver
);
1649 kref_init(&floppy
->kref
);
1651 floppy
->drive
= drive
;
1652 floppy
->driver
= &idefloppy_driver
;
1655 g
->private_data
= &floppy
->driver
;
1657 drive
->driver_data
= floppy
;
1659 idefloppy_setup(drive
, floppy
);
1661 g
->minors
= 1 << PARTN_BITS
;
1662 g
->driverfs_dev
= &drive
->gendev
;
1663 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
1664 g
->fops
= &idefloppy_ops
;
1675 static void __exit
idefloppy_exit(void)
1677 driver_unregister(&idefloppy_driver
.gen_driver
);
1680 static int __init
idefloppy_init(void)
1682 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
1683 return driver_register(&idefloppy_driver
.gen_driver
);
1686 MODULE_ALIAS("ide:*m-floppy*");
1687 module_init(idefloppy_init
);
1688 module_exit(idefloppy_exit
);
1689 MODULE_LICENSE("GPL");
1690 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");