2 * linux/drivers/ide/ide-floppy.c Version 0.99 Feb 24 2002
4 * Copyright (C) 1996 - 1999 Gadi Oxman <gadio@netvision.net.il>
5 * Copyright (C) 2000 - 2002 Paul Bristow <paul@paulbristow.net>
9 * IDE ATAPI floppy driver.
11 * The driver currently doesn't have any fancy features, just the bare
12 * minimum read/write support.
14 * This driver supports the following IDE floppy drives:
16 * LS-120/240 SuperDisk
18 * Iomega PC Card Clik!/PocketZip
20 * Many thanks to Lode Leroy <Lode.Leroy@www.ibase.be>, who tested so many
21 * ALPHA patches to this driver on an EASYSTOR LS-120 ATAPI floppy drive.
23 * Ver 0.1 Oct 17 96 Initial test version, mostly based on ide-tape.c.
24 * Ver 0.2 Oct 31 96 Minor changes.
25 * Ver 0.3 Dec 2 96 Fixed error recovery bug.
26 * Ver 0.4 Jan 26 97 Add support for the HDIO_GETGEO ioctl.
27 * Ver 0.5 Feb 21 97 Add partitions support.
28 * Use the minimum of the LBA and CHS capacities.
29 * Avoid hwgroup->rq == NULL on the last irq.
30 * Fix potential null dereferencing with DEBUG_LOG.
31 * Ver 0.8 Dec 7 97 Increase irq timeout from 10 to 50 seconds.
32 * Add media write-protect detection.
33 * Issue START command only if TEST UNIT READY fails.
34 * Add work-around for IOMEGA ZIP revision 21.D.
35 * Remove idefloppy_get_capabilities().
36 * Ver 0.9 Jul 4 99 Fix a bug which might have caused the number of
37 * bytes requested on each interrupt to be zero.
38 * Thanks to <shanos@es.co.nz> for pointing this out.
39 * Ver 0.9.sv Jan 6 01 Sam Varshavchik <mrsam@courier-mta.com>
40 * Implement low level formatting. Reimplemented
41 * IDEFLOPPY_CAPABILITIES_PAGE, since we need the srfp
42 * bit. My LS-120 drive barfs on
43 * IDEFLOPPY_CAPABILITIES_PAGE, but maybe it's just me.
44 * Compromise by not reporting a failure to get this
45 * mode page. Implemented four IOCTLs in order to
46 * implement formatting. IOCTls begin with 0x4600,
47 * 0x46 is 'F' as in Format.
48 * Jan 9 01 Userland option to select format verify.
49 * Added PC_SUPPRESS_ERROR flag - some idefloppy drives
50 * do not implement IDEFLOPPY_CAPABILITIES_PAGE, and
51 * return a sense error. Suppress error reporting in
52 * this particular case in order to avoid spurious
53 * errors in syslog. The culprit is
54 * idefloppy_get_capability_page(), so move it to
55 * idefloppy_begin_format() so that it's not used
56 * unless absolutely necessary.
57 * If drive does not support format progress indication
58 * monitor the dsc bit in the status register.
59 * Also, O_NDELAY on open will allow the device to be
60 * opened without a disk available. This can be used to
61 * open an unformatted disk, or get the device capacity.
62 * Ver 0.91 Dec 11 99 Added IOMEGA Clik! drive support by
63 * <paul@paulbristow.net>
64 * Ver 0.92 Oct 22 00 Paul Bristow became official maintainer for this
65 * driver. Included Powerbook internal zip kludge.
66 * Ver 0.93 Oct 24 00 Fixed bugs for Clik! drive
67 * no disk on insert and disk change now works
68 * Ver 0.94 Oct 27 00 Tidied up to remove strstr(Clik) everywhere
69 * Ver 0.95 Nov 7 00 Brought across to kernel 2.4
70 * Ver 0.96 Jan 7 01 Actually in line with release version of 2.4.0
71 * including set_bit patch from Rusty Russell
72 * Ver 0.97 Jul 22 01 Merge 0.91-0.96 onto 0.9.sv for ac series
73 * Ver 0.97.sv Aug 3 01 Backported from 2.4.7-ac3
74 * Ver 0.98 Oct 26 01 Split idefloppy_transfer_pc into two pieces to
75 * fix a lost interrupt problem. It appears the busy
76 * bit was being deasserted by my IOMEGA ATAPI ZIP 100
77 * drive before the drive was actually ready.
78 * Ver 0.98a Oct 29 01 Expose delay value so we can play.
79 * Ver 0.99 Feb 24 02 Remove duplicate code, modify clik! detection code
80 * to support new PocketZip drives
83 #define IDEFLOPPY_VERSION "0.99.newide"
85 #include <linux/module.h>
86 #include <linux/types.h>
87 #include <linux/string.h>
88 #include <linux/kernel.h>
89 #include <linux/delay.h>
90 #include <linux/timer.h>
92 #include <linux/interrupt.h>
93 #include <linux/major.h>
94 #include <linux/errno.h>
95 #include <linux/genhd.h>
96 #include <linux/slab.h>
97 #include <linux/cdrom.h>
98 #include <linux/ide.h>
99 #include <linux/bitops.h>
100 #include <linux/mutex.h>
102 #include <scsi/scsi_ioctl.h>
104 #include <asm/byteorder.h>
106 #include <asm/uaccess.h>
108 #include <asm/unaligned.h>
111 * The following are used to debug the driver.
113 #define IDEFLOPPY_DEBUG_LOG 0
114 #define IDEFLOPPY_DEBUG_INFO 0
115 #define IDEFLOPPY_DEBUG_BUGS 1
117 /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
118 #define IDEFLOPPY_DEBUG( fmt, args... )
120 #if IDEFLOPPY_DEBUG_LOG
121 #define debug_log printk
123 #define debug_log(fmt, args... ) do {} while(0)
128 * Some drives require a longer irq timeout.
130 #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
133 * After each failed packet command we issue a request sense command
134 * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times.
136 #define IDEFLOPPY_MAX_PC_RETRIES 3
139 * With each packet command, we allocate a buffer of
140 * IDEFLOPPY_PC_BUFFER_SIZE bytes.
142 #define IDEFLOPPY_PC_BUFFER_SIZE 256
145 * In various places in the driver, we need to allocate storage
146 * for packet commands and requests, which will remain valid while
147 * we leave the driver to wait for an interrupt or a timeout event.
149 #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
152 * Our view of a packet command.
154 typedef struct idefloppy_packet_command_s {
155 u8 c[12]; /* Actual packet bytes */
156 int retries; /* On each retry, we increment retries */
157 int error; /* Error code */
158 int request_transfer; /* Bytes to transfer */
159 int actually_transferred; /* Bytes actually transferred */
160 int buffer_size; /* Size of our data buffer */
161 int b_count; /* Missing/Available data on the current buffer */
162 struct request *rq; /* The corresponding request */
163 u8 *buffer; /* Data buffer */
164 u8 *current_position; /* Pointer into the above buffer */
165 void (*callback) (ide_drive_t *); /* Called when this packet command is completed */
166 u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */
167 unsigned long flags; /* Status/Action bit flags: long for set_bit */
171 * Packet command flag bits.
173 #define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */
174 #define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */
175 #define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */
176 #define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */
177 #define PC_WRITING 5 /* Data direction */
179 #define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */
182 * Removable Block Access Capabilities Page
185 #if defined(__LITTLE_ENDIAN_BITFIELD)
186 unsigned page_code :6; /* Page code - Should be 0x1b */
187 unsigned reserved1_6 :1; /* Reserved */
188 unsigned ps :1; /* Should be 0 */
189 #elif defined(__BIG_ENDIAN_BITFIELD)
190 unsigned ps :1; /* Should be 0 */
191 unsigned reserved1_6 :1; /* Reserved */
192 unsigned page_code :6; /* Page code - Should be 0x1b */
194 #error "Bitfield endianness not defined! Check your byteorder.h"
196 u8 page_length; /* Page Length - Should be 0xa */
197 #if defined(__LITTLE_ENDIAN_BITFIELD)
198 unsigned reserved2 :6;
199 unsigned srfp :1; /* Supports reporting progress of format */
200 unsigned sflp :1; /* System floppy type device */
201 unsigned tlun :3; /* Total logical units supported by the device */
202 unsigned reserved3 :3;
203 unsigned sml :1; /* Single / Multiple lun supported */
204 unsigned ncd :1; /* Non cd optical device */
205 #elif defined(__BIG_ENDIAN_BITFIELD)
206 unsigned sflp :1; /* System floppy type device */
207 unsigned srfp :1; /* Supports reporting progress of format */
208 unsigned reserved2 :6;
209 unsigned ncd :1; /* Non cd optical device */
210 unsigned sml :1; /* Single / Multiple lun supported */
211 unsigned reserved3 :3;
212 unsigned tlun :3; /* Total logical units supported by the device */
214 #error "Bitfield endianness not defined! Check your byteorder.h"
217 } idefloppy_capabilities_page_t;
220 * Flexible disk page.
223 #if defined(__LITTLE_ENDIAN_BITFIELD)
224 unsigned page_code :6; /* Page code - Should be 0x5 */
225 unsigned reserved1_6 :1; /* Reserved */
226 unsigned ps :1; /* The device is capable of saving the page */
227 #elif defined(__BIG_ENDIAN_BITFIELD)
228 unsigned ps :1; /* The device is capable of saving the page */
229 unsigned reserved1_6 :1; /* Reserved */
230 unsigned page_code :6; /* Page code - Should be 0x5 */
232 #error "Bitfield endianness not defined! Check your byteorder.h"
234 u8 page_length; /* Page Length - Should be 0x1e */
235 u16 transfer_rate; /* In kilobits per second */
236 u8 heads, sectors; /* Number of heads, Number of sectors per track */
237 u16 sector_size; /* Byes per sector */
238 u16 cyls; /* Number of cylinders */
240 u8 motor_delay; /* Motor off delay */
242 u16 rpm; /* Rotations per minute */
244 } idefloppy_flexible_disk_page_t;
251 u8 length; /* Length of the following descriptors in bytes */
252 } idefloppy_capacity_header_t;
255 u32 blocks; /* Number of blocks */
256 #if defined(__LITTLE_ENDIAN_BITFIELD)
257 unsigned dc :2; /* Descriptor Code */
258 unsigned reserved :6;
259 #elif defined(__BIG_ENDIAN_BITFIELD)
260 unsigned reserved :6;
261 unsigned dc :2; /* Descriptor Code */
263 #error "Bitfield endianness not defined! Check your byteorder.h"
265 u8 length_msb; /* Block Length (MSB)*/
266 u16 length; /* Block Length */
267 } idefloppy_capacity_descriptor_t;
269 #define CAPACITY_INVALID 0x00
270 #define CAPACITY_UNFORMATTED 0x01
271 #define CAPACITY_CURRENT 0x02
272 #define CAPACITY_NO_CARTRIDGE 0x03
275 * Most of our global data which we need to save even as we leave the
276 * driver due to an interrupt or a timer event is stored in a variable
277 * of type idefloppy_floppy_t, defined below.
279 typedef struct ide_floppy_obj {
281 ide_driver_t *driver;
282 struct gendisk *disk;
284 unsigned int openers; /* protected by BKL for now */
286 /* Current packet command */
288 /* Last failed packet command */
289 idefloppy_pc_t *failed_pc;
290 /* Packet command stack */
291 idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK];
292 /* Next free packet command storage space */
294 struct request rq_stack[IDEFLOPPY_PC_STACK];
295 /* We implement a circular array */
299 * Last error information
301 u8 sense_key, asc, ascq;
302 /* delay this long before sending packet command */
304 int progress_indication;
310 int blocks, block_size, bs_factor;
311 /* Last format capacity */
312 idefloppy_capacity_descriptor_t capacity;
313 /* Copy of the flexible disk page */
314 idefloppy_flexible_disk_page_t flexible_disk_page;
317 /* Supports format progress report */
319 /* Status/Action flags */
321 } idefloppy_floppy_t;
323 #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
326 * Floppy flag bits values.
328 #define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */
329 #define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */
330 #define IDEFLOPPY_USE_READ12 2 /* Use READ12/WRITE12 or READ10/WRITE10 */
331 #define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */
332 #define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */
333 #define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */
336 * ATAPI floppy drive packet commands
338 #define IDEFLOPPY_FORMAT_UNIT_CMD 0x04
339 #define IDEFLOPPY_INQUIRY_CMD 0x12
340 #define IDEFLOPPY_MODE_SELECT_CMD 0x55
341 #define IDEFLOPPY_MODE_SENSE_CMD 0x5a
342 #define IDEFLOPPY_READ10_CMD 0x28
343 #define IDEFLOPPY_READ12_CMD 0xa8
344 #define IDEFLOPPY_READ_CAPACITY_CMD 0x23
345 #define IDEFLOPPY_REQUEST_SENSE_CMD 0x03
346 #define IDEFLOPPY_PREVENT_REMOVAL_CMD 0x1e
347 #define IDEFLOPPY_SEEK_CMD 0x2b
348 #define IDEFLOPPY_START_STOP_CMD 0x1b
349 #define IDEFLOPPY_TEST_UNIT_READY_CMD 0x00
350 #define IDEFLOPPY_VERIFY_CMD 0x2f
351 #define IDEFLOPPY_WRITE10_CMD 0x2a
352 #define IDEFLOPPY_WRITE12_CMD 0xaa
353 #define IDEFLOPPY_WRITE_VERIFY_CMD 0x2e
356 * Defines for the mode sense command
358 #define MODE_SENSE_CURRENT 0x00
359 #define MODE_SENSE_CHANGEABLE 0x01
360 #define MODE_SENSE_DEFAULT 0x02
361 #define MODE_SENSE_SAVED 0x03
364 * IOCTLs used in low-level formatting.
367 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
368 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
369 #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
370 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
374 * Special requests for our block device strategy routine.
376 #define IDEFLOPPY_FIRST_RQ 90
379 * IDEFLOPPY_PC_RQ is used to queue a packet command in the request queue.
381 #define IDEFLOPPY_PC_RQ 90
383 #define IDEFLOPPY_LAST_RQ 90
386 * A macro which can be used to check if a given request command
387 * originated in the driver or in the buffer cache layer.
389 #define IDEFLOPPY_RQ_CMD(cmd) ((cmd >= IDEFLOPPY_FIRST_RQ) && (cmd <= IDEFLOPPY_LAST_RQ))
394 * Error codes which are returned in rq->errors to the higher part
397 #define IDEFLOPPY_ERROR_GENERAL 101
400 * The following is used to format the general configuration word of
401 * the ATAPI IDENTIFY DEVICE command.
403 struct idefloppy_id_gcw {
404 #if defined(__LITTLE_ENDIAN_BITFIELD)
405 unsigned packet_size :2; /* Packet Size */
406 unsigned reserved234 :3; /* Reserved */
407 unsigned drq_type :2; /* Command packet DRQ type */
408 unsigned removable :1; /* Removable media */
409 unsigned device_type :5; /* Device type */
410 unsigned reserved13 :1; /* Reserved */
411 unsigned protocol :2; /* Protocol type */
412 #elif defined(__BIG_ENDIAN_BITFIELD)
413 unsigned protocol :2; /* Protocol type */
414 unsigned reserved13 :1; /* Reserved */
415 unsigned device_type :5; /* Device type */
416 unsigned removable :1; /* Removable media */
417 unsigned drq_type :2; /* Command packet DRQ type */
418 unsigned reserved234 :3; /* Reserved */
419 unsigned packet_size :2; /* Packet Size */
421 #error "Bitfield endianness not defined! Check your byteorder.h"
426 * INQUIRY packet command - Data Format
429 #if defined(__LITTLE_ENDIAN_BITFIELD)
430 unsigned device_type :5; /* Peripheral Device Type */
431 unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
432 unsigned reserved1_6t0 :7; /* Reserved */
433 unsigned rmb :1; /* Removable Medium Bit */
434 unsigned ansi_version :3; /* ANSI Version */
435 unsigned ecma_version :3; /* ECMA Version */
436 unsigned iso_version :2; /* ISO Version */
437 unsigned response_format :4; /* Response Data Format */
438 unsigned reserved3_45 :2; /* Reserved */
439 unsigned reserved3_6 :1; /* TrmIOP - Reserved */
440 unsigned reserved3_7 :1; /* AENC - Reserved */
441 #elif defined(__BIG_ENDIAN_BITFIELD)
442 unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
443 unsigned device_type :5; /* Peripheral Device Type */
444 unsigned rmb :1; /* Removable Medium Bit */
445 unsigned reserved1_6t0 :7; /* Reserved */
446 unsigned iso_version :2; /* ISO Version */
447 unsigned ecma_version :3; /* ECMA Version */
448 unsigned ansi_version :3; /* ANSI Version */
449 unsigned reserved3_7 :1; /* AENC - Reserved */
450 unsigned reserved3_6 :1; /* TrmIOP - Reserved */
451 unsigned reserved3_45 :2; /* Reserved */
452 unsigned response_format :4; /* Response Data Format */
454 #error "Bitfield endianness not defined! Check your byteorder.h"
456 u8 additional_length; /* Additional Length (total_length-4) */
457 u8 rsv5, rsv6, rsv7; /* Reserved */
458 u8 vendor_id[8]; /* Vendor Identification */
459 u8 product_id[16]; /* Product Identification */
460 u8 revision_level[4]; /* Revision Level */
461 u8 vendor_specific[20]; /* Vendor Specific - Optional */
462 u8 reserved56t95[40]; /* Reserved - Optional */
463 /* Additional information may be returned */
464 } idefloppy_inquiry_result_t;
467 * REQUEST SENSE packet command result - Data Format.
470 #if defined(__LITTLE_ENDIAN_BITFIELD)
471 unsigned error_code :7; /* Current error (0x70) */
472 unsigned valid :1; /* The information field conforms to SFF-8070i */
473 u8 reserved1 :8; /* Reserved */
474 unsigned sense_key :4; /* Sense Key */
475 unsigned reserved2_4 :1; /* Reserved */
476 unsigned ili :1; /* Incorrect Length Indicator */
477 unsigned reserved2_67 :2;
478 #elif defined(__BIG_ENDIAN_BITFIELD)
479 unsigned valid :1; /* The information field conforms to SFF-8070i */
480 unsigned error_code :7; /* Current error (0x70) */
481 u8 reserved1 :8; /* Reserved */
482 unsigned reserved2_67 :2;
483 unsigned ili :1; /* Incorrect Length Indicator */
484 unsigned reserved2_4 :1; /* Reserved */
485 unsigned sense_key :4; /* Sense Key */
487 #error "Bitfield endianness not defined! Check your byteorder.h"
489 u32 information __attribute__ ((packed));
490 u8 asl; /* Additional sense length (n-7) */
491 u32 command_specific; /* Additional command specific information */
492 u8 asc; /* Additional Sense Code */
493 u8 ascq; /* Additional Sense Code Qualifier */
494 u8 replaceable_unit_code; /* Field Replaceable Unit Code */
496 u8 pad[2]; /* Padding to 20 bytes */
497 } idefloppy_request_sense_result_t;
500 * Pages of the SELECT SENSE / MODE SENSE packet commands.
502 #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
503 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
506 * Mode Parameter Header for the MODE SENSE packet command
509 u16 mode_data_length; /* Length of the following data transfer */
510 u8 medium_type; /* Medium Type */
511 #if defined(__LITTLE_ENDIAN_BITFIELD)
512 unsigned reserved3 :7;
513 unsigned wp :1; /* Write protect */
514 #elif defined(__BIG_ENDIAN_BITFIELD)
515 unsigned wp :1; /* Write protect */
516 unsigned reserved3 :7;
518 #error "Bitfield endianness not defined! Check your byteorder.h"
521 } idefloppy_mode_parameter_header_t;
523 static DEFINE_MUTEX(idefloppy_ref_mutex);
525 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
527 #define ide_floppy_g(disk) \
528 container_of((disk)->private_data, struct ide_floppy_obj, driver)
530 static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk)
532 struct ide_floppy_obj *floppy = NULL;
534 mutex_lock(&idefloppy_ref_mutex);
535 floppy = ide_floppy_g(disk);
537 kref_get(&floppy->kref);
538 mutex_unlock(&idefloppy_ref_mutex);
542 static void ide_floppy_release(struct kref *);
544 static void ide_floppy_put(struct ide_floppy_obj *floppy)
546 mutex_lock(&idefloppy_ref_mutex);
547 kref_put(&floppy->kref, ide_floppy_release);
548 mutex_unlock(&idefloppy_ref_mutex);
552 * Too bad. The drive wants to send us data which we are not ready to accept.
553 * Just throw it away.
555 static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount)
558 (void) HWIF(drive)->INB(IDE_DATA_REG);
561 #if IDEFLOPPY_DEBUG_BUGS
562 static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount)
565 HWIF(drive)->OUTB(0, IDE_DATA_REG);
567 #endif /* IDEFLOPPY_DEBUG_BUGS */
571 * idefloppy_do_end_request is used to finish servicing a request.
573 * For read/write requests, we will call ide_end_request to pass to the
576 static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs)
578 idefloppy_floppy_t *floppy = drive->driver_data;
579 struct request *rq = HWGROUP(drive)->rq;
582 debug_log(KERN_INFO "Reached idefloppy_end_request\n");
585 case 0: error = IDEFLOPPY_ERROR_GENERAL; break;
586 case 1: error = 0; break;
587 default: error = uptodate;
590 floppy->failed_pc = NULL;
591 /* Why does this happen? */
594 if (!blk_special_request(rq)) {
595 /* our real local end request function */
596 ide_end_request(drive, uptodate, nsecs);
600 /* fixme: need to move this local also */
601 ide_end_drive_cmd(drive, 0, 0);
605 static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount)
607 struct request *rq = pc->rq;
608 struct bio_vec *bvec;
612 int count, i, done = 0;
614 rq_for_each_bio(bio, rq) {
615 bio_for_each_segment(bvec, bio, i) {
619 count = min(bvec->bv_len, bcount);
621 data = bvec_kmap_irq(bvec, &flags);
622 drive->hwif->atapi_input_bytes(drive, data, count);
623 bvec_kunmap_irq(data, &flags);
626 pc->b_count += count;
631 idefloppy_do_end_request(drive, 1, done >> 9);
634 printk(KERN_ERR "%s: leftover data in idefloppy_input_buffers, bcount == %d\n", drive->name, bcount);
635 idefloppy_discard_data(drive, bcount);
639 static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount)
641 struct request *rq = pc->rq;
643 struct bio_vec *bvec;
645 int count, i, done = 0;
648 rq_for_each_bio(bio, rq) {
649 bio_for_each_segment(bvec, bio, i) {
653 count = min(bvec->bv_len, bcount);
655 data = bvec_kmap_irq(bvec, &flags);
656 drive->hwif->atapi_output_bytes(drive, data, count);
657 bvec_kunmap_irq(data, &flags);
660 pc->b_count += count;
665 idefloppy_do_end_request(drive, 1, done >> 9);
667 #if IDEFLOPPY_DEBUG_BUGS
669 printk(KERN_ERR "%s: leftover data in idefloppy_output_buffers, bcount == %d\n", drive->name, bcount);
670 idefloppy_write_zeros(drive, bcount);
675 static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc)
677 struct request *rq = pc->rq;
678 struct bio *bio = rq->bio;
680 while ((bio = rq->bio) != NULL)
681 idefloppy_do_end_request(drive, 1, 0);
685 * idefloppy_queue_pc_head generates a new packet command request in front
686 * of the request queue, before the current request, so that it will be
687 * processed immediately, on the next pass through the driver.
689 static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq)
691 struct ide_floppy_obj *floppy = drive->driver_data;
693 ide_init_drive_cmd(rq);
694 rq->buffer = (char *) pc;
695 rq->cmd_type = REQ_TYPE_SPECIAL;
696 rq->rq_disk = floppy->disk;
697 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
700 static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive)
702 idefloppy_floppy_t *floppy = drive->driver_data;
704 if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK)
705 floppy->pc_stack_index=0;
706 return (&floppy->pc_stack[floppy->pc_stack_index++]);
709 static struct request *idefloppy_next_rq_storage (ide_drive_t *drive)
711 idefloppy_floppy_t *floppy = drive->driver_data;
713 if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK)
714 floppy->rq_stack_index = 0;
715 return (&floppy->rq_stack[floppy->rq_stack_index++]);
719 * idefloppy_analyze_error is called on each failed packet command retry
720 * to analyze the request sense.
722 static void idefloppy_analyze_error (ide_drive_t *drive,idefloppy_request_sense_result_t *result)
724 idefloppy_floppy_t *floppy = drive->driver_data;
726 floppy->sense_key = result->sense_key;
727 floppy->asc = result->asc;
728 floppy->ascq = result->ascq;
729 floppy->progress_indication = result->sksv[0] & 0x80 ?
730 (u16)get_unaligned((u16 *)(result->sksv+1)):0x10000;
731 if (floppy->failed_pc)
732 debug_log(KERN_INFO "ide-floppy: pc = %x, sense key = %x, "
733 "asc = %x, ascq = %x\n", floppy->failed_pc->c[0],
734 result->sense_key, result->asc, result->ascq);
736 debug_log(KERN_INFO "ide-floppy: sense key = %x, asc = %x, "
737 "ascq = %x\n", result->sense_key,
738 result->asc, result->ascq);
741 static void idefloppy_request_sense_callback (ide_drive_t *drive)
743 idefloppy_floppy_t *floppy = drive->driver_data;
745 debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__);
747 if (!floppy->pc->error) {
748 idefloppy_analyze_error(drive,(idefloppy_request_sense_result_t *) floppy->pc->buffer);
749 idefloppy_do_end_request(drive, 1, 0);
751 printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting request!\n");
752 idefloppy_do_end_request(drive, 0, 0);
757 * General packet command callback function.
759 static void idefloppy_pc_callback (ide_drive_t *drive)
761 idefloppy_floppy_t *floppy = drive->driver_data;
763 debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__);
765 idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0);
769 * idefloppy_init_pc initializes a packet command.
771 static void idefloppy_init_pc (idefloppy_pc_t *pc)
773 memset(pc->c, 0, 12);
776 pc->request_transfer = 0;
777 pc->buffer = pc->pc_buffer;
778 pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE;
779 pc->callback = &idefloppy_pc_callback;
782 static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc)
784 idefloppy_init_pc(pc);
785 pc->c[0] = IDEFLOPPY_REQUEST_SENSE_CMD;
787 pc->request_transfer = 18;
788 pc->callback = &idefloppy_request_sense_callback;
792 * idefloppy_retry_pc is called when an error was detected during the
793 * last packet command. We queue a request sense packet command in
794 * the head of the request list.
796 static void idefloppy_retry_pc (ide_drive_t *drive)
802 error.all = HWIF(drive)->INB(IDE_ERROR_REG);
803 pc = idefloppy_next_pc_storage(drive);
804 rq = idefloppy_next_rq_storage(drive);
805 idefloppy_create_request_sense_cmd(pc);
806 idefloppy_queue_pc_head(drive, pc, rq);
810 * idefloppy_pc_intr is the usual interrupt handler which will be called
811 * during a packet command.
813 static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive)
815 idefloppy_floppy_t *floppy = drive->driver_data;
816 atapi_status_t status;
817 atapi_bcount_t bcount;
818 atapi_ireason_t ireason;
819 idefloppy_pc_t *pc = floppy->pc;
820 struct request *rq = pc->rq;
823 debug_log(KERN_INFO "ide-floppy: Reached %s interrupt handler\n",
826 if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
827 if (HWIF(drive)->ide_dma_end(drive)) {
828 set_bit(PC_DMA_ERROR, &pc->flags);
830 pc->actually_transferred = pc->request_transfer;
831 idefloppy_update_buffers(drive, pc);
833 debug_log(KERN_INFO "ide-floppy: DMA finished\n");
836 /* Clear the interrupt */
837 status.all = HWIF(drive)->INB(IDE_STATUS_REG);
839 if (!status.b.drq) { /* No more interrupts */
840 debug_log(KERN_INFO "Packet command completed, %d bytes "
841 "transferred\n", pc->actually_transferred);
842 clear_bit(PC_DMA_IN_PROGRESS, &pc->flags);
844 local_irq_enable_in_hardirq();
846 if (status.b.check || test_bit(PC_DMA_ERROR, &pc->flags)) {
848 debug_log(KERN_INFO "ide-floppy: %s: I/O error\n",
851 if (pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) {
852 printk(KERN_ERR "ide-floppy: I/O error in "
853 "request sense command\n");
854 return ide_do_reset(drive);
856 /* Retry operation */
857 idefloppy_retry_pc(drive);
858 /* queued, but not started */
862 if (floppy->failed_pc == pc)
863 floppy->failed_pc = NULL;
864 /* Command finished - Call the callback function */
869 if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
870 printk(KERN_ERR "ide-floppy: The floppy wants to issue "
871 "more interrupts in DMA mode\n");
873 return ide_do_reset(drive);
876 /* Get the number of bytes to transfer */
877 bcount.b.high = HWIF(drive)->INB(IDE_BCOUNTH_REG);
878 bcount.b.low = HWIF(drive)->INB(IDE_BCOUNTL_REG);
879 /* on this interrupt */
880 ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
883 printk(KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n");
884 return ide_do_reset(drive);
886 if (ireason.b.io == test_bit(PC_WRITING, &pc->flags)) {
887 /* Hopefully, we will never get here */
888 printk(KERN_ERR "ide-floppy: We wanted to %s, ",
889 ireason.b.io ? "Write":"Read");
890 printk(KERN_ERR "but the floppy wants us to %s !\n",
891 ireason.b.io ? "Read":"Write");
892 return ide_do_reset(drive);
894 if (!test_bit(PC_WRITING, &pc->flags)) {
895 /* Reading - Check that we have enough space */
896 temp = pc->actually_transferred + bcount.all;
897 if (temp > pc->request_transfer) {
898 if (temp > pc->buffer_size) {
899 printk(KERN_ERR "ide-floppy: The floppy wants "
900 "to send us more data than expected "
901 "- discarding data\n");
902 idefloppy_discard_data(drive,bcount.all);
903 BUG_ON(HWGROUP(drive)->handler != NULL);
904 ide_set_handler(drive,
910 debug_log(KERN_NOTICE "ide-floppy: The floppy wants to "
911 "send us more data than expected - "
912 "allowing transfer\n");
915 if (test_bit(PC_WRITING, &pc->flags)) {
916 if (pc->buffer != NULL)
917 /* Write the current buffer */
918 HWIF(drive)->atapi_output_bytes(drive,
919 pc->current_position,
922 idefloppy_output_buffers(drive, pc, bcount.all);
924 if (pc->buffer != NULL)
925 /* Read the current buffer */
926 HWIF(drive)->atapi_input_bytes(drive,
927 pc->current_position,
930 idefloppy_input_buffers(drive, pc, bcount.all);
932 /* Update the current position */
933 pc->actually_transferred += bcount.all;
934 pc->current_position += bcount.all;
936 BUG_ON(HWGROUP(drive)->handler != NULL);
937 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); /* And set the interrupt handler again */
942 * This is the original routine that did the packet transfer.
943 * It fails at high speeds on the Iomega ZIP drive, so there's a slower version
944 * for that drive below. The algorithm is chosen based on drive type
946 static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive)
948 ide_startstop_t startstop;
949 idefloppy_floppy_t *floppy = drive->driver_data;
950 atapi_ireason_t ireason;
952 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
953 printk(KERN_ERR "ide-floppy: Strange, packet command "
954 "initiated yet DRQ isn't asserted\n");
957 ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
958 if (!ireason.b.cod || ireason.b.io) {
959 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while "
960 "issuing a packet command\n");
961 return ide_do_reset(drive);
963 BUG_ON(HWGROUP(drive)->handler != NULL);
964 /* Set the interrupt routine */
965 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
966 /* Send the actual packet */
967 HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
973 * What we have here is a classic case of a top half / bottom half
974 * interrupt service routine. In interrupt mode, the device sends
975 * an interrupt to signal it's ready to receive a packet. However,
976 * we need to delay about 2-3 ticks before issuing the packet or we
979 * So, follow carefully. transfer_pc1 is called as an interrupt (or
980 * directly). In either case, when the device says it's ready for a
981 * packet, we schedule the packet transfer to occur about 2-3 ticks
982 * later in transfer_pc2.
984 static int idefloppy_transfer_pc2 (ide_drive_t *drive)
986 idefloppy_floppy_t *floppy = drive->driver_data;
988 /* Send the actual packet */
989 HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
990 /* Timeout for the packet command */
991 return IDEFLOPPY_WAIT_CMD;
994 static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive)
996 idefloppy_floppy_t *floppy = drive->driver_data;
997 ide_startstop_t startstop;
998 atapi_ireason_t ireason;
1000 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
1001 printk(KERN_ERR "ide-floppy: Strange, packet command "
1002 "initiated yet DRQ isn't asserted\n");
1005 ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
1006 if (!ireason.b.cod || ireason.b.io) {
1007 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) "
1008 "while issuing a packet command\n");
1009 return ide_do_reset(drive);
1012 * The following delay solves a problem with ATAPI Zip 100 drives
1013 * where the Busy flag was apparently being deasserted before the
1014 * unit was ready to receive data. This was happening on a
1015 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
1016 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
1017 * used until after the packet is moved in about 50 msec.
1019 BUG_ON(HWGROUP(drive)->handler != NULL);
1020 ide_set_handler(drive,
1021 &idefloppy_pc_intr, /* service routine for packet command */
1022 floppy->ticks, /* wait this long before "failing" */
1023 &idefloppy_transfer_pc2); /* fail == transfer_pc2 */
1028 * idefloppy_should_report_error()
1030 * Supresses error messages resulting from Medium not present
1032 static inline int idefloppy_should_report_error(idefloppy_floppy_t *floppy)
1034 if (floppy->sense_key == 0x02 &&
1035 floppy->asc == 0x3a &&
1036 floppy->ascq == 0x00)
1042 * Issue a packet command
1044 static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc)
1046 idefloppy_floppy_t *floppy = drive->driver_data;
1047 ide_hwif_t *hwif = drive->hwif;
1048 atapi_feature_t feature;
1049 atapi_bcount_t bcount;
1050 ide_handler_t *pkt_xfer_routine;
1052 #if 0 /* Accessing floppy->pc is not valid here, the previous pc may be gone
1053 and have lived on another thread's stack; that stack may have become
1054 unmapped meanwhile (CONFIG_DEBUG_PAGEALLOC). */
1055 #if IDEFLOPPY_DEBUG_BUGS
1056 if (floppy->pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD &&
1057 pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) {
1058 printk(KERN_ERR "ide-floppy: possible ide-floppy.c bug - "
1059 "Two request sense in serial were issued\n");
1061 #endif /* IDEFLOPPY_DEBUG_BUGS */
1064 if (floppy->failed_pc == NULL &&
1065 pc->c[0] != IDEFLOPPY_REQUEST_SENSE_CMD)
1066 floppy->failed_pc = pc;
1067 /* Set the current packet command */
1070 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES ||
1071 test_bit(PC_ABORT, &pc->flags)) {
1073 * We will "abort" retrying a packet command in case
1074 * a legitimate error code was received.
1076 if (!test_bit(PC_ABORT, &pc->flags)) {
1077 if (!test_bit(PC_SUPPRESS_ERROR, &pc->flags)) {
1078 if (idefloppy_should_report_error(floppy))
1079 printk(KERN_ERR "ide-floppy: %s: I/O error, "
1080 "pc = %2x, key = %2x, "
1081 "asc = %2x, ascq = %2x\n",
1082 drive->name, pc->c[0],
1084 floppy->asc, floppy->ascq);
1087 pc->error = IDEFLOPPY_ERROR_GENERAL;
1089 floppy->failed_pc = NULL;
1090 pc->callback(drive);
1094 debug_log(KERN_INFO "Retry number - %d\n",pc->retries);
1097 /* We haven't transferred any data yet */
1098 pc->actually_transferred = 0;
1099 pc->current_position = pc->buffer;
1100 bcount.all = min(pc->request_transfer, 63 * 1024);
1102 if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags))
1107 if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
1108 feature.b.dma = !hwif->dma_setup(drive);
1110 if (IDE_CONTROL_REG)
1111 HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
1113 HWIF(drive)->OUTB(feature.all, IDE_FEATURE_REG);
1114 HWIF(drive)->OUTB(bcount.b.high, IDE_BCOUNTH_REG);
1115 HWIF(drive)->OUTB(bcount.b.low, IDE_BCOUNTL_REG);
1116 HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG);
1118 if (feature.b.dma) { /* Begin DMA, if necessary */
1119 set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
1120 hwif->dma_start(drive);
1123 /* Can we transfer the packet when we get the interrupt or wait? */
1124 if (test_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) {
1126 pkt_xfer_routine = &idefloppy_transfer_pc1;
1129 pkt_xfer_routine = &idefloppy_transfer_pc;
1132 if (test_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) {
1133 /* Issue the packet command */
1134 ide_execute_command(drive, WIN_PACKETCMD,
1140 /* Issue the packet command */
1141 HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
1142 return (*pkt_xfer_routine) (drive);
1146 static void idefloppy_rw_callback (ide_drive_t *drive)
1148 debug_log(KERN_INFO "ide-floppy: Reached idefloppy_rw_callback\n");
1150 idefloppy_do_end_request(drive, 1, 0);
1154 static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent)
1156 debug_log(KERN_INFO "ide-floppy: creating prevent removal command, "
1157 "prevent = %d\n", prevent);
1159 idefloppy_init_pc(pc);
1160 pc->c[0] = IDEFLOPPY_PREVENT_REMOVAL_CMD;
1164 static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc)
1166 idefloppy_init_pc(pc);
1167 pc->c[0] = IDEFLOPPY_READ_CAPACITY_CMD;
1170 pc->request_transfer = 255;
1173 static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l,
1176 idefloppy_init_pc(pc);
1177 pc->c[0] = IDEFLOPPY_FORMAT_UNIT_CMD;
1180 memset(pc->buffer, 0, 12);
1181 pc->buffer[1] = 0xA2;
1182 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
1184 if (flags & 1) /* Verify bit on... */
1185 pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */
1188 put_unaligned(htonl(b), (unsigned int *)(&pc->buffer[4]));
1189 put_unaligned(htonl(l), (unsigned int *)(&pc->buffer[8]));
1191 set_bit(PC_WRITING, &pc->flags);
1195 * A mode sense command is used to "sense" floppy parameters.
1197 static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type)
1199 u16 length = sizeof(idefloppy_mode_parameter_header_t);
1201 idefloppy_init_pc(pc);
1202 pc->c[0] = IDEFLOPPY_MODE_SENSE_CMD;
1204 pc->c[2] = page_code + (type << 6);
1206 switch (page_code) {
1207 case IDEFLOPPY_CAPABILITIES_PAGE:
1210 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
1214 printk(KERN_ERR "ide-floppy: unsupported page code "
1215 "in create_mode_sense_cmd\n");
1217 put_unaligned(htons(length), (u16 *) &pc->c[7]);
1218 pc->request_transfer = length;
1221 static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start)
1223 idefloppy_init_pc(pc);
1224 pc->c[0] = IDEFLOPPY_START_STOP_CMD;
1228 static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc)
1230 idefloppy_init_pc(pc);
1231 pc->c[0] = IDEFLOPPY_TEST_UNIT_READY_CMD;
1234 static void idefloppy_create_rw_cmd (idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq, unsigned long sector)
1236 int block = sector / floppy->bs_factor;
1237 int blocks = rq->nr_sectors / floppy->bs_factor;
1238 int cmd = rq_data_dir(rq);
1240 debug_log("create_rw1%d_cmd: block == %d, blocks == %d\n",
1241 2 * test_bit (IDEFLOPPY_USE_READ12, &floppy->flags),
1244 idefloppy_init_pc(pc);
1245 if (test_bit(IDEFLOPPY_USE_READ12, &floppy->flags)) {
1246 pc->c[0] = cmd == READ ? IDEFLOPPY_READ12_CMD : IDEFLOPPY_WRITE12_CMD;
1247 put_unaligned(htonl(blocks), (unsigned int *) &pc->c[6]);
1249 pc->c[0] = cmd == READ ? IDEFLOPPY_READ10_CMD : IDEFLOPPY_WRITE10_CMD;
1250 put_unaligned(htons(blocks), (unsigned short *) &pc->c[7]);
1252 put_unaligned(htonl(block), (unsigned int *) &pc->c[2]);
1253 pc->callback = &idefloppy_rw_callback;
1255 pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
1256 if (rq->cmd_flags & REQ_RW)
1257 set_bit(PC_WRITING, &pc->flags);
1259 pc->request_transfer = pc->buffer_size = blocks * floppy->block_size;
1260 set_bit(PC_DMA_RECOMMENDED, &pc->flags);
1264 idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq)
1266 idefloppy_init_pc(pc);
1267 pc->callback = &idefloppy_rw_callback;
1268 memcpy(pc->c, rq->cmd, sizeof(pc->c));
1270 pc->b_count = rq->data_len;
1271 if (rq->data_len && rq_data_dir(rq) == WRITE)
1272 set_bit(PC_WRITING, &pc->flags);
1273 pc->buffer = rq->data;
1275 set_bit(PC_DMA_RECOMMENDED, &pc->flags);
1278 * possibly problematic, doesn't look like ide-floppy correctly
1279 * handled scattered requests if dma fails...
1281 pc->request_transfer = pc->buffer_size = rq->data_len;
1285 * idefloppy_do_request is our request handling function.
1287 static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, sector_t block_s)
1289 idefloppy_floppy_t *floppy = drive->driver_data;
1291 unsigned long block = (unsigned long)block_s;
1293 debug_log(KERN_INFO "dev: %s, flags: %lx, errors: %d\n",
1294 rq->rq_disk ? rq->rq_disk->disk_name : "?",
1295 rq->flags, rq->errors);
1296 debug_log(KERN_INFO "sector: %ld, nr_sectors: %ld, "
1297 "current_nr_sectors: %d\n", (long)rq->sector,
1298 rq->nr_sectors, rq->current_nr_sectors);
1300 if (rq->errors >= ERROR_MAX) {
1301 if (floppy->failed_pc != NULL) {
1302 if (idefloppy_should_report_error(floppy))
1303 printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x,"
1304 " key = %2x, asc = %2x, ascq = %2x\n",
1305 drive->name, floppy->failed_pc->c[0],
1306 floppy->sense_key, floppy->asc, floppy->ascq);
1309 printk(KERN_ERR "ide-floppy: %s: I/O error\n",
1311 idefloppy_do_end_request(drive, 0, 0);
1314 if (blk_fs_request(rq)) {
1315 if (((long)rq->sector % floppy->bs_factor) ||
1316 (rq->nr_sectors % floppy->bs_factor)) {
1317 printk("%s: unsupported r/w request size\n",
1319 idefloppy_do_end_request(drive, 0, 0);
1322 pc = idefloppy_next_pc_storage(drive);
1323 idefloppy_create_rw_cmd(floppy, pc, rq, block);
1324 } else if (blk_special_request(rq)) {
1325 pc = (idefloppy_pc_t *) rq->buffer;
1326 } else if (blk_pc_request(rq)) {
1327 pc = idefloppy_next_pc_storage(drive);
1328 idefloppy_blockpc_cmd(floppy, pc, rq);
1330 blk_dump_rq_flags(rq,
1331 "ide-floppy: unsupported command in queue");
1332 idefloppy_do_end_request(drive, 0, 0);
1337 return idefloppy_issue_pc(drive, pc);
1341 * idefloppy_queue_pc_tail adds a special packet command request to the
1342 * tail of the request queue, and waits for it to be serviced.
1344 static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc)
1346 struct ide_floppy_obj *floppy = drive->driver_data;
1349 ide_init_drive_cmd (&rq);
1350 rq.buffer = (char *) pc;
1351 rq.cmd_type = REQ_TYPE_SPECIAL;
1352 rq.rq_disk = floppy->disk;
1354 return ide_do_drive_cmd(drive, &rq, ide_wait);
1358 * Look at the flexible disk page parameters. We will ignore the CHS
1359 * capacity parameters and use the LBA parameters instead.
1361 static int idefloppy_get_flexible_disk_page (ide_drive_t *drive)
1363 idefloppy_floppy_t *floppy = drive->driver_data;
1365 idefloppy_mode_parameter_header_t *header;
1366 idefloppy_flexible_disk_page_t *page;
1367 int capacity, lba_capacity;
1369 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, MODE_SENSE_CURRENT);
1370 if (idefloppy_queue_pc_tail(drive,&pc)) {
1371 printk(KERN_ERR "ide-floppy: Can't get flexible disk "
1372 "page parameters\n");
1375 header = (idefloppy_mode_parameter_header_t *) pc.buffer;
1376 floppy->wp = header->wp;
1377 set_disk_ro(floppy->disk, floppy->wp);
1378 page = (idefloppy_flexible_disk_page_t *) (header + 1);
1380 page->transfer_rate = ntohs(page->transfer_rate);
1381 page->sector_size = ntohs(page->sector_size);
1382 page->cyls = ntohs(page->cyls);
1383 page->rpm = ntohs(page->rpm);
1384 capacity = page->cyls * page->heads * page->sectors * page->sector_size;
1385 if (memcmp (page, &floppy->flexible_disk_page, sizeof (idefloppy_flexible_disk_page_t)))
1386 printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, "
1387 "%d sector size, %d rpm\n",
1388 drive->name, capacity / 1024, page->cyls,
1389 page->heads, page->sectors,
1390 page->transfer_rate / 8, page->sector_size, page->rpm);
1392 floppy->flexible_disk_page = *page;
1393 drive->bios_cyl = page->cyls;
1394 drive->bios_head = page->heads;
1395 drive->bios_sect = page->sectors;
1396 lba_capacity = floppy->blocks * floppy->block_size;
1397 if (capacity < lba_capacity) {
1398 printk(KERN_NOTICE "%s: The disk reports a capacity of %d "
1399 "bytes, but the drive only handles %d\n",
1400 drive->name, lba_capacity, capacity);
1401 floppy->blocks = floppy->block_size ? capacity / floppy->block_size : 0;
1406 static int idefloppy_get_capability_page(ide_drive_t *drive)
1408 idefloppy_floppy_t *floppy = drive->driver_data;
1410 idefloppy_mode_parameter_header_t *header;
1411 idefloppy_capabilities_page_t *page;
1414 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE,
1415 MODE_SENSE_CURRENT);
1417 set_bit(PC_SUPPRESS_ERROR, &pc.flags);
1418 if (idefloppy_queue_pc_tail(drive,&pc)) {
1422 header = (idefloppy_mode_parameter_header_t *) pc.buffer;
1423 page= (idefloppy_capabilities_page_t *)(header+1);
1424 floppy->srfp = page->srfp;
1429 * Determine if a media is present in the floppy drive, and if so,
1432 static int idefloppy_get_capacity (ide_drive_t *drive)
1434 idefloppy_floppy_t *floppy = drive->driver_data;
1436 idefloppy_capacity_header_t *header;
1437 idefloppy_capacity_descriptor_t *descriptor;
1438 int i, descriptors, rc = 1, blocks, length;
1440 drive->bios_cyl = 0;
1441 drive->bios_head = drive->bios_sect = 0;
1443 floppy->bs_factor = 1;
1444 set_capacity(floppy->disk, 0);
1446 idefloppy_create_read_capacity_cmd(&pc);
1447 if (idefloppy_queue_pc_tail(drive, &pc)) {
1448 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1451 header = (idefloppy_capacity_header_t *) pc.buffer;
1452 descriptors = header->length / sizeof(idefloppy_capacity_descriptor_t);
1453 descriptor = (idefloppy_capacity_descriptor_t *) (header + 1);
1455 for (i = 0; i < descriptors; i++, descriptor++) {
1456 blocks = descriptor->blocks = ntohl(descriptor->blocks);
1457 length = descriptor->length = ntohs(descriptor->length);
1461 switch (descriptor->dc) {
1462 /* Clik! drive returns this instead of CAPACITY_CURRENT */
1463 case CAPACITY_UNFORMATTED:
1464 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags))
1466 * If it is not a clik drive, break out
1467 * (maintains previous driver behaviour)
1470 case CAPACITY_CURRENT:
1471 /* Normal Zip/LS-120 disks */
1472 if (memcmp(descriptor, &floppy->capacity, sizeof (idefloppy_capacity_descriptor_t)))
1473 printk(KERN_INFO "%s: %dkB, %d blocks, %d "
1474 "sector size\n", drive->name,
1475 blocks * length / 1024, blocks, length);
1476 floppy->capacity = *descriptor;
1477 if (!length || length % 512) {
1478 printk(KERN_NOTICE "%s: %d bytes block size "
1479 "not supported\n", drive->name, length);
1481 floppy->blocks = blocks;
1482 floppy->block_size = length;
1483 if ((floppy->bs_factor = length / 512) != 1)
1484 printk(KERN_NOTICE "%s: warning: non "
1485 "512 bytes block size not "
1486 "fully supported\n",
1491 case CAPACITY_NO_CARTRIDGE:
1493 * This is a KERN_ERR so it appears on screen
1494 * for the user to see
1496 printk(KERN_ERR "%s: No disk in drive\n", drive->name);
1498 case CAPACITY_INVALID:
1499 printk(KERN_ERR "%s: Invalid capacity for disk "
1500 "in drive\n", drive->name);
1505 debug_log( "Descriptor 0 Code: %d\n",
1508 debug_log( "Descriptor %d: %dkB, %d blocks, %d "
1509 "sector size\n", i, blocks * length / 1024, blocks,
1513 /* Clik! disk does not support get_flexible_disk_page */
1514 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
1515 (void) idefloppy_get_flexible_disk_page(drive);
1518 set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
1523 ** Obtain the list of formattable capacities.
1524 ** Very similar to idefloppy_get_capacity, except that we push the capacity
1525 ** descriptors to userland, instead of our own structures.
1527 ** Userland gives us the following structure:
1529 ** struct idefloppy_format_capacities {
1537 ** userland initializes nformats to the number of allocated formats[]
1538 ** records. On exit we set nformats to the number of records we've
1539 ** actually initialized.
1543 static int idefloppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
1546 idefloppy_capacity_header_t *header;
1547 idefloppy_capacity_descriptor_t *descriptor;
1548 int i, descriptors, blocks, length;
1553 if (get_user(u_array_size, arg))
1556 if (u_array_size <= 0)
1559 idefloppy_create_read_capacity_cmd(&pc);
1560 if (idefloppy_queue_pc_tail(drive, &pc)) {
1561 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1564 header = (idefloppy_capacity_header_t *) pc.buffer;
1565 descriptors = header->length /
1566 sizeof(idefloppy_capacity_descriptor_t);
1567 descriptor = (idefloppy_capacity_descriptor_t *) (header + 1);
1573 ** We always skip the first capacity descriptor. That's the
1574 ** current capacity. We are interested in the remaining descriptors,
1575 ** the formattable capacities.
1578 for (i=0; i<descriptors; i++, descriptor++) {
1579 if (u_index >= u_array_size)
1580 break; /* User-supplied buffer too small */
1582 continue; /* Skip the first descriptor */
1584 blocks = ntohl(descriptor->blocks);
1585 length = ntohs(descriptor->length);
1587 if (put_user(blocks, argp))
1591 if (put_user(length, argp))
1598 if (put_user(u_index, arg))
1604 ** Send ATAPI_FORMAT_UNIT to the drive.
1606 ** Userland gives us the following structure:
1608 ** struct idefloppy_format_command {
1614 ** flags is a bitmask, currently, the only defined flag is:
1616 ** 0x01 - verify media after format.
1619 static int idefloppy_begin_format(ide_drive_t *drive, int __user *arg)
1626 if (get_user(blocks, arg) ||
1627 get_user(length, arg+1) ||
1628 get_user(flags, arg+2)) {
1632 /* Get the SFRP bit */
1633 (void) idefloppy_get_capability_page(drive);
1634 idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
1635 if (idefloppy_queue_pc_tail(drive, &pc)) {
1643 ** Get ATAPI_FORMAT_UNIT progress indication.
1645 ** Userland gives a pointer to an int. The int is set to a progress
1646 ** indicator 0-65536, with 65536=100%.
1648 ** If the drive does not support format progress indication, we just check
1649 ** the dsc bit, and return either 0 or 65536.
1652 static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg)
1654 idefloppy_floppy_t *floppy = drive->driver_data;
1656 int progress_indication = 0x10000;
1659 idefloppy_create_request_sense_cmd(&pc);
1660 if (idefloppy_queue_pc_tail(drive, &pc)) {
1664 if (floppy->sense_key == 2 &&
1666 floppy->ascq == 4) {
1667 progress_indication = floppy->progress_indication;
1669 /* Else assume format_unit has finished, and we're
1672 atapi_status_t status;
1673 unsigned long flags;
1675 local_irq_save(flags);
1676 status.all = HWIF(drive)->INB(IDE_STATUS_REG);
1677 local_irq_restore(flags);
1679 progress_indication = !status.b.dsc ? 0 : 0x10000;
1681 if (put_user(progress_indication, arg))
1688 * Return the current floppy capacity.
1690 static sector_t idefloppy_capacity (ide_drive_t *drive)
1692 idefloppy_floppy_t *floppy = drive->driver_data;
1693 unsigned long capacity = floppy->blocks * floppy->bs_factor;
1699 * idefloppy_identify_device checks if we can support a drive,
1700 * based on the ATAPI IDENTIFY command results.
1702 static int idefloppy_identify_device (ide_drive_t *drive,struct hd_driveid *id)
1704 struct idefloppy_id_gcw gcw;
1705 #if IDEFLOPPY_DEBUG_INFO
1708 #endif /* IDEFLOPPY_DEBUG_INFO */
1710 *((u16 *) &gcw) = id->config;
1713 /* kludge for Apple PowerBook internal zip */
1714 if ((gcw.device_type == 5) &&
1715 !strstr(id->model, "CD-ROM") &&
1716 strstr(id->model, "ZIP"))
1717 gcw.device_type = 0;
1720 #if IDEFLOPPY_DEBUG_INFO
1721 printk(KERN_INFO "Dumping ATAPI Identify Device floppy parameters\n");
1722 switch (gcw.protocol) {
1723 case 0: case 1: sprintf(buffer, "ATA");break;
1724 case 2: sprintf(buffer, "ATAPI");break;
1725 case 3: sprintf(buffer, "Reserved (Unknown to ide-floppy)");break;
1727 printk(KERN_INFO "Protocol Type: %s\n", buffer);
1728 switch (gcw.device_type) {
1729 case 0: sprintf(buffer, "Direct-access Device");break;
1730 case 1: sprintf(buffer, "Streaming Tape Device");break;
1731 case 2: case 3: case 4: sprintf (buffer, "Reserved");break;
1732 case 5: sprintf(buffer, "CD-ROM Device");break;
1733 case 6: sprintf(buffer, "Reserved");
1734 case 7: sprintf(buffer, "Optical memory Device");break;
1735 case 0x1f: sprintf(buffer, "Unknown or no Device type");break;
1736 default: sprintf(buffer, "Reserved");
1738 printk(KERN_INFO "Device Type: %x - %s\n", gcw.device_type, buffer);
1739 printk(KERN_INFO "Removable: %s\n",gcw.removable ? "Yes":"No");
1740 switch (gcw.drq_type) {
1741 case 0: sprintf(buffer, "Microprocessor DRQ");break;
1742 case 1: sprintf(buffer, "Interrupt DRQ");break;
1743 case 2: sprintf(buffer, "Accelerated DRQ");break;
1744 case 3: sprintf(buffer, "Reserved");break;
1746 printk(KERN_INFO "Command Packet DRQ Type: %s\n", buffer);
1747 switch (gcw.packet_size) {
1748 case 0: sprintf(buffer, "12 bytes");break;
1749 case 1: sprintf(buffer, "16 bytes");break;
1750 default: sprintf(buffer, "Reserved");break;
1752 printk(KERN_INFO "Command Packet Size: %s\n", buffer);
1753 printk(KERN_INFO "Model: %.40s\n",id->model);
1754 printk(KERN_INFO "Firmware Revision: %.8s\n",id->fw_rev);
1755 printk(KERN_INFO "Serial Number: %.20s\n",id->serial_no);
1756 printk(KERN_INFO "Write buffer size(?): %d bytes\n",id->buf_size*512);
1757 printk(KERN_INFO "DMA: %s",id->capability & 0x01 ? "Yes\n":"No\n");
1758 printk(KERN_INFO "LBA: %s",id->capability & 0x02 ? "Yes\n":"No\n");
1759 printk(KERN_INFO "IORDY can be disabled: %s",id->capability & 0x04 ? "Yes\n":"No\n");
1760 printk(KERN_INFO "IORDY supported: %s",id->capability & 0x08 ? "Yes\n":"Unknown\n");
1761 printk(KERN_INFO "ATAPI overlap supported: %s",id->capability & 0x20 ? "Yes\n":"No\n");
1762 printk(KERN_INFO "PIO Cycle Timing Category: %d\n",id->tPIO);
1763 printk(KERN_INFO "DMA Cycle Timing Category: %d\n",id->tDMA);
1764 printk(KERN_INFO "Single Word DMA supported modes:\n");
1765 for (i=0,mask=1;i<8;i++,mask=mask << 1) {
1766 if (id->dma_1word & mask)
1767 printk(KERN_INFO " Mode %d%s\n", i,
1768 (id->dma_1word & (mask << 8)) ? " (active)" : "");
1770 printk(KERN_INFO "Multi Word DMA supported modes:\n");
1771 for (i=0,mask=1;i<8;i++,mask=mask << 1) {
1772 if (id->dma_mword & mask)
1773 printk(KERN_INFO " Mode %d%s\n", i,
1774 (id->dma_mword & (mask << 8)) ? " (active)" : "");
1776 if (id->field_valid & 0x0002) {
1777 printk(KERN_INFO "Enhanced PIO Modes: %s\n",
1778 id->eide_pio_modes & 1 ? "Mode 3":"None");
1779 if (id->eide_dma_min == 0)
1780 sprintf(buffer, "Not supported");
1782 sprintf(buffer, "%d ns",id->eide_dma_min);
1783 printk(KERN_INFO "Minimum Multi-word DMA cycle per word: %s\n", buffer);
1784 if (id->eide_dma_time == 0)
1785 sprintf(buffer, "Not supported");
1787 sprintf(buffer, "%d ns",id->eide_dma_time);
1788 printk(KERN_INFO "Manufacturer\'s Recommended Multi-word cycle: %s\n", buffer);
1789 if (id->eide_pio == 0)
1790 sprintf(buffer, "Not supported");
1792 sprintf(buffer, "%d ns",id->eide_pio);
1793 printk(KERN_INFO "Minimum PIO cycle without IORDY: %s\n",
1795 if (id->eide_pio_iordy == 0)
1796 sprintf(buffer, "Not supported");
1798 sprintf(buffer, "%d ns",id->eide_pio_iordy);
1799 printk(KERN_INFO "Minimum PIO cycle with IORDY: %s\n", buffer);
1801 printk(KERN_INFO "According to the device, fields 64-70 are not valid.\n");
1802 #endif /* IDEFLOPPY_DEBUG_INFO */
1804 if (gcw.protocol != 2)
1805 printk(KERN_ERR "ide-floppy: Protocol is not ATAPI\n");
1806 else if (gcw.device_type != 0)
1807 printk(KERN_ERR "ide-floppy: Device type is not set to floppy\n");
1808 else if (!gcw.removable)
1809 printk(KERN_ERR "ide-floppy: The removable flag is not set\n");
1810 else if (gcw.drq_type == 3) {
1811 printk(KERN_ERR "ide-floppy: Sorry, DRQ type %d not supported\n", gcw.drq_type);
1812 } else if (gcw.packet_size != 0) {
1813 printk(KERN_ERR "ide-floppy: Packet size is not 12 bytes long\n");
1819 #ifdef CONFIG_IDE_PROC_FS
1820 static void idefloppy_add_settings(ide_drive_t *drive)
1822 idefloppy_floppy_t *floppy = drive->driver_data;
1825 * drive setting name read/write data type min max mul_factor div_factor data pointer set function
1827 ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL);
1828 ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
1829 ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
1830 ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL);
1833 static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
1837 * Driver initialization.
1839 static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy)
1841 struct idefloppy_id_gcw gcw;
1843 *((u16 *) &gcw) = drive->id->config;
1844 floppy->pc = floppy->pc_stack;
1845 if (gcw.drq_type == 1)
1846 set_bit(IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags);
1848 * We used to check revisions here. At this point however
1849 * I'm giving up. Just assume they are all broken, its easier.
1851 * The actual reason for the workarounds was likely
1852 * a driver bug after all rather than a firmware bug,
1853 * and the workaround below used to hide it. It should
1854 * be fixed as of version 1.9, but to be on the safe side
1855 * we'll leave the limitation below for the 2.2.x tree.
1858 if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
1859 set_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags);
1860 /* This value will be visible in the /proc/ide/hdx/settings */
1861 floppy->ticks = IDEFLOPPY_TICKS_DELAY;
1862 blk_queue_max_sectors(drive->queue, 64);
1866 * Guess what? The IOMEGA Clik! drive also needs the
1867 * above fix. It makes nasty clicking noises without
1868 * it, so please don't remove this.
1870 if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
1871 blk_queue_max_sectors(drive->queue, 64);
1872 set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags);
1876 (void) idefloppy_get_capacity(drive);
1877 idefloppy_add_settings(drive);
1880 static void ide_floppy_remove(ide_drive_t *drive)
1882 idefloppy_floppy_t *floppy = drive->driver_data;
1883 struct gendisk *g = floppy->disk;
1885 ide_proc_unregister_driver(drive, floppy->driver);
1889 ide_floppy_put(floppy);
1892 static void ide_floppy_release(struct kref *kref)
1894 struct ide_floppy_obj *floppy = to_ide_floppy(kref);
1895 ide_drive_t *drive = floppy->drive;
1896 struct gendisk *g = floppy->disk;
1898 drive->driver_data = NULL;
1899 g->private_data = NULL;
1904 #ifdef CONFIG_IDE_PROC_FS
1905 static int proc_idefloppy_read_capacity
1906 (char *page, char **start, off_t off, int count, int *eof, void *data)
1908 ide_drive_t*drive = (ide_drive_t *)data;
1911 len = sprintf(page,"%llu\n", (long long)idefloppy_capacity(drive));
1912 PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
1915 static ide_proc_entry_t idefloppy_proc[] = {
1916 { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL },
1917 { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
1918 { NULL, 0, NULL, NULL }
1920 #endif /* CONFIG_IDE_PROC_FS */
1922 static int ide_floppy_probe(ide_drive_t *);
1924 static ide_driver_t idefloppy_driver = {
1926 .owner = THIS_MODULE,
1927 .name = "ide-floppy",
1928 .bus = &ide_bus_type,
1930 .probe = ide_floppy_probe,
1931 .remove = ide_floppy_remove,
1932 .version = IDEFLOPPY_VERSION,
1933 .media = ide_floppy,
1934 .supports_dsc_overlap = 0,
1935 .do_request = idefloppy_do_request,
1936 .end_request = idefloppy_do_end_request,
1937 .error = __ide_error,
1938 .abort = __ide_abort,
1939 #ifdef CONFIG_IDE_PROC_FS
1940 .proc = idefloppy_proc,
1944 static int idefloppy_open(struct inode *inode, struct file *filp)
1946 struct gendisk *disk = inode->i_bdev->bd_disk;
1947 struct ide_floppy_obj *floppy;
1952 debug_log(KERN_INFO "Reached idefloppy_open\n");
1954 if (!(floppy = ide_floppy_get(disk)))
1957 drive = floppy->drive;
1961 if (floppy->openers == 1) {
1962 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
1965 idefloppy_create_test_unit_ready_cmd(&pc);
1966 if (idefloppy_queue_pc_tail(drive, &pc)) {
1967 idefloppy_create_start_stop_cmd(&pc, 1);
1968 (void) idefloppy_queue_pc_tail(drive, &pc);
1971 if (idefloppy_get_capacity (drive)
1972 && (filp->f_flags & O_NDELAY) == 0
1974 ** Allow O_NDELAY to open a drive without a disk, or with
1975 ** an unreadable disk, so that we can get the format
1976 ** capacity of the drive or begin the format - Sam
1980 goto out_put_floppy;
1983 if (floppy->wp && (filp->f_mode & 2)) {
1985 goto out_put_floppy;
1987 set_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags);
1988 /* IOMEGA Clik! drives do not support lock/unlock commands */
1989 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
1990 idefloppy_create_prevent_cmd(&pc, 1);
1991 (void) idefloppy_queue_pc_tail(drive, &pc);
1993 check_disk_change(inode->i_bdev);
1994 } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) {
1996 goto out_put_floppy;
2002 ide_floppy_put(floppy);
2006 static int idefloppy_release(struct inode *inode, struct file *filp)
2008 struct gendisk *disk = inode->i_bdev->bd_disk;
2009 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
2010 ide_drive_t *drive = floppy->drive;
2013 debug_log(KERN_INFO "Reached idefloppy_release\n");
2015 if (floppy->openers == 1) {
2016 /* IOMEGA Clik! drives do not support lock/unlock commands */
2017 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
2018 idefloppy_create_prevent_cmd(&pc, 0);
2019 (void) idefloppy_queue_pc_tail(drive, &pc);
2022 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
2027 ide_floppy_put(floppy);
2032 static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
2034 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
2035 ide_drive_t *drive = floppy->drive;
2037 geo->heads = drive->bios_head;
2038 geo->sectors = drive->bios_sect;
2039 geo->cylinders = (u16)drive->bios_cyl; /* truncate */
2043 static int idefloppy_ioctl(struct inode *inode, struct file *file,
2044 unsigned int cmd, unsigned long arg)
2046 struct block_device *bdev = inode->i_bdev;
2047 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
2048 ide_drive_t *drive = floppy->drive;
2049 void __user *argp = (void __user *)arg;
2051 int prevent = (arg) ? 1 : 0;
2058 case CDROM_LOCKDOOR:
2059 if (floppy->openers > 1)
2062 /* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */
2063 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
2064 idefloppy_create_prevent_cmd(&pc, prevent);
2065 (void) idefloppy_queue_pc_tail(drive, &pc);
2067 if (cmd == CDROMEJECT) {
2068 idefloppy_create_start_stop_cmd(&pc, 2);
2069 (void) idefloppy_queue_pc_tail(drive, &pc);
2072 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
2074 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
2075 return idefloppy_get_format_capacities(drive, argp);
2076 case IDEFLOPPY_IOCTL_FORMAT_START:
2078 if (!(file->f_mode & 2))
2081 if (floppy->openers > 1) {
2082 /* Don't format if someone is using the disk */
2084 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS,
2089 set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
2091 err = idefloppy_begin_format(drive, argp);
2093 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
2096 ** Note, the bit will be cleared when the device is
2097 ** closed. This is the cleanest way to handle the
2098 ** situation where the drive does not support
2099 ** format progress reporting.
2101 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
2102 return idefloppy_get_format_progress(drive, argp);
2106 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
2107 * and CDROM_SEND_PACKET (legacy) ioctls
2109 if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
2110 err = scsi_cmd_ioctl(file, bdev->bd_disk->queue,
2111 bdev->bd_disk, cmd, argp);
2116 err = generic_ide_ioctl(drive, file, bdev, cmd, arg);
2121 static int idefloppy_media_changed(struct gendisk *disk)
2123 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
2124 ide_drive_t *drive = floppy->drive;
2126 /* do not scan partitions twice if this is a removable device */
2127 if (drive->attach) {
2131 return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags);
2134 static int idefloppy_revalidate_disk(struct gendisk *disk)
2136 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
2137 set_capacity(disk, idefloppy_capacity(floppy->drive));
2141 static struct block_device_operations idefloppy_ops = {
2142 .owner = THIS_MODULE,
2143 .open = idefloppy_open,
2144 .release = idefloppy_release,
2145 .ioctl = idefloppy_ioctl,
2146 .getgeo = idefloppy_getgeo,
2147 .media_changed = idefloppy_media_changed,
2148 .revalidate_disk= idefloppy_revalidate_disk
2151 static int ide_floppy_probe(ide_drive_t *drive)
2153 idefloppy_floppy_t *floppy;
2156 if (!strstr("ide-floppy", drive->driver_req))
2158 if (!drive->present)
2160 if (drive->media != ide_floppy)
2162 if (!idefloppy_identify_device (drive, drive->id)) {
2163 printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name);
2167 printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name);
2170 if ((floppy = kzalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) {
2171 printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name);
2175 g = alloc_disk(1 << PARTN_BITS);
2177 goto out_free_floppy;
2179 ide_init_disk(g, drive);
2181 ide_proc_register_driver(drive, &idefloppy_driver);
2183 kref_init(&floppy->kref);
2185 floppy->drive = drive;
2186 floppy->driver = &idefloppy_driver;
2189 g->private_data = &floppy->driver;
2191 drive->driver_data = floppy;
2193 idefloppy_setup (drive, floppy);
2195 g->minors = 1 << PARTN_BITS;
2196 g->driverfs_dev = &drive->gendev;
2197 g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
2198 g->fops = &idefloppy_ops;
2209 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
2211 static void __exit idefloppy_exit (void)
2213 driver_unregister(&idefloppy_driver.gen_driver);
2216 static int __init idefloppy_init(void)
2218 printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
2219 return driver_register(&idefloppy_driver.gen_driver);
2222 MODULE_ALIAS("ide:*m-floppy*");
2223 module_init(idefloppy_init);
2224 module_exit(idefloppy_exit);
2225 MODULE_LICENSE("GPL");