2 * IDE ATAPI floppy driver.
4 * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il>
5 * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net>
6 * Copyright (C) 2005 Bartlomiej Zolnierkiewicz
10 * The driver currently doesn't have any fancy features, just the bare
11 * minimum read/write support.
13 * This driver supports the following IDE floppy drives:
15 * LS-120/240 SuperDisk
17 * Iomega PC Card Clik!/PocketZip
19 * For a historical changelog see
20 * Documentation/ide/ChangeLog.ide-floppy.1996-2002
23 #define IDEFLOPPY_VERSION "0.99.newide"
25 #include <linux/module.h>
26 #include <linux/types.h>
27 #include <linux/string.h>
28 #include <linux/kernel.h>
29 #include <linux/delay.h>
30 #include <linux/timer.h>
32 #include <linux/interrupt.h>
33 #include <linux/major.h>
34 #include <linux/errno.h>
35 #include <linux/genhd.h>
36 #include <linux/slab.h>
37 #include <linux/cdrom.h>
38 #include <linux/ide.h>
39 #include <linux/bitops.h>
40 #include <linux/mutex.h>
42 #include <scsi/scsi_ioctl.h>
44 #include <asm/byteorder.h>
46 #include <asm/uaccess.h>
48 #include <asm/unaligned.h>
51 * The following are used to debug the driver.
53 #define IDEFLOPPY_DEBUG_LOG 0
54 #define IDEFLOPPY_DEBUG_INFO 0
55 #define IDEFLOPPY_DEBUG_BUGS 1
57 /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
58 #define IDEFLOPPY_DEBUG( fmt, args... )
60 #if IDEFLOPPY_DEBUG_LOG
61 #define debug_log printk
63 #define debug_log(fmt, args... ) do {} while(0)
68 * Some drives require a longer irq timeout.
70 #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
73 * After each failed packet command we issue a request sense command
74 * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times.
76 #define IDEFLOPPY_MAX_PC_RETRIES 3
79 * With each packet command, we allocate a buffer of
80 * IDEFLOPPY_PC_BUFFER_SIZE bytes.
82 #define IDEFLOPPY_PC_BUFFER_SIZE 256
85 * In various places in the driver, we need to allocate storage
86 * for packet commands and requests, which will remain valid while
87 * we leave the driver to wait for an interrupt or a timeout event.
89 #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
92 * Our view of a packet command.
94 typedef struct idefloppy_packet_command_s
{
95 u8 c
[12]; /* Actual packet bytes */
96 int retries
; /* On each retry, we increment retries */
97 int error
; /* Error code */
98 int request_transfer
; /* Bytes to transfer */
99 int actually_transferred
; /* Bytes actually transferred */
100 int buffer_size
; /* Size of our data buffer */
101 int b_count
; /* Missing/Available data on the current buffer */
102 struct request
*rq
; /* The corresponding request */
103 u8
*buffer
; /* Data buffer */
104 u8
*current_position
; /* Pointer into the above buffer */
105 void (*callback
) (ide_drive_t
*); /* Called when this packet command is completed */
106 u8 pc_buffer
[IDEFLOPPY_PC_BUFFER_SIZE
]; /* Temporary buffer */
107 unsigned long flags
; /* Status/Action bit flags: long for set_bit */
111 * Packet command flag bits.
113 #define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */
114 #define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */
115 #define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */
116 #define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */
117 #define PC_WRITING 5 /* Data direction */
119 #define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */
122 * Removable Block Access Capabilities Page
125 #if defined(__LITTLE_ENDIAN_BITFIELD)
126 unsigned page_code
:6; /* Page code - Should be 0x1b */
127 unsigned reserved1_6
:1; /* Reserved */
128 unsigned ps
:1; /* Should be 0 */
129 #elif defined(__BIG_ENDIAN_BITFIELD)
130 unsigned ps
:1; /* Should be 0 */
131 unsigned reserved1_6
:1; /* Reserved */
132 unsigned page_code
:6; /* Page code - Should be 0x1b */
134 #error "Bitfield endianness not defined! Check your byteorder.h"
136 u8 page_length
; /* Page Length - Should be 0xa */
137 #if defined(__LITTLE_ENDIAN_BITFIELD)
138 unsigned reserved2
:6;
139 unsigned srfp
:1; /* Supports reporting progress of format */
140 unsigned sflp
:1; /* System floppy type device */
141 unsigned tlun
:3; /* Total logical units supported by the device */
142 unsigned reserved3
:3;
143 unsigned sml
:1; /* Single / Multiple lun supported */
144 unsigned ncd
:1; /* Non cd optical device */
145 #elif defined(__BIG_ENDIAN_BITFIELD)
146 unsigned sflp
:1; /* System floppy type device */
147 unsigned srfp
:1; /* Supports reporting progress of format */
148 unsigned reserved2
:6;
149 unsigned ncd
:1; /* Non cd optical device */
150 unsigned sml
:1; /* Single / Multiple lun supported */
151 unsigned reserved3
:3;
152 unsigned tlun
:3; /* Total logical units supported by the device */
154 #error "Bitfield endianness not defined! Check your byteorder.h"
157 } idefloppy_capabilities_page_t
;
160 * Flexible disk page.
163 #if defined(__LITTLE_ENDIAN_BITFIELD)
164 unsigned page_code
:6; /* Page code - Should be 0x5 */
165 unsigned reserved1_6
:1; /* Reserved */
166 unsigned ps
:1; /* The device is capable of saving the page */
167 #elif defined(__BIG_ENDIAN_BITFIELD)
168 unsigned ps
:1; /* The device is capable of saving the page */
169 unsigned reserved1_6
:1; /* Reserved */
170 unsigned page_code
:6; /* Page code - Should be 0x5 */
172 #error "Bitfield endianness not defined! Check your byteorder.h"
174 u8 page_length
; /* Page Length - Should be 0x1e */
175 u16 transfer_rate
; /* In kilobits per second */
176 u8 heads
, sectors
; /* Number of heads, Number of sectors per track */
177 u16 sector_size
; /* Byes per sector */
178 u16 cyls
; /* Number of cylinders */
180 u8 motor_delay
; /* Motor off delay */
182 u16 rpm
; /* Rotations per minute */
184 } idefloppy_flexible_disk_page_t
;
191 u8 length
; /* Length of the following descriptors in bytes */
192 } idefloppy_capacity_header_t
;
195 u32 blocks
; /* Number of blocks */
196 #if defined(__LITTLE_ENDIAN_BITFIELD)
197 unsigned dc
:2; /* Descriptor Code */
198 unsigned reserved
:6;
199 #elif defined(__BIG_ENDIAN_BITFIELD)
200 unsigned reserved
:6;
201 unsigned dc
:2; /* Descriptor Code */
203 #error "Bitfield endianness not defined! Check your byteorder.h"
205 u8 length_msb
; /* Block Length (MSB)*/
206 u16 length
; /* Block Length */
207 } idefloppy_capacity_descriptor_t
;
209 #define CAPACITY_INVALID 0x00
210 #define CAPACITY_UNFORMATTED 0x01
211 #define CAPACITY_CURRENT 0x02
212 #define CAPACITY_NO_CARTRIDGE 0x03
215 * Most of our global data which we need to save even as we leave the
216 * driver due to an interrupt or a timer event is stored in a variable
217 * of type idefloppy_floppy_t, defined below.
219 typedef struct ide_floppy_obj
{
221 ide_driver_t
*driver
;
222 struct gendisk
*disk
;
224 unsigned int openers
; /* protected by BKL for now */
226 /* Current packet command */
228 /* Last failed packet command */
229 idefloppy_pc_t
*failed_pc
;
230 /* Packet command stack */
231 idefloppy_pc_t pc_stack
[IDEFLOPPY_PC_STACK
];
232 /* Next free packet command storage space */
234 struct request rq_stack
[IDEFLOPPY_PC_STACK
];
235 /* We implement a circular array */
239 * Last error information
241 u8 sense_key
, asc
, ascq
;
242 /* delay this long before sending packet command */
244 int progress_indication
;
250 int blocks
, block_size
, bs_factor
;
251 /* Last format capacity */
252 idefloppy_capacity_descriptor_t capacity
;
253 /* Copy of the flexible disk page */
254 idefloppy_flexible_disk_page_t flexible_disk_page
;
257 /* Supports format progress report */
259 /* Status/Action flags */
261 } idefloppy_floppy_t
;
263 #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
266 * Floppy flag bits values.
268 #define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */
269 #define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */
270 #define IDEFLOPPY_USE_READ12 2 /* Use READ12/WRITE12 or READ10/WRITE10 */
271 #define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */
272 #define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */
273 #define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */
276 * ATAPI floppy drive packet commands
278 #define IDEFLOPPY_FORMAT_UNIT_CMD 0x04
279 #define IDEFLOPPY_INQUIRY_CMD 0x12
280 #define IDEFLOPPY_MODE_SELECT_CMD 0x55
281 #define IDEFLOPPY_MODE_SENSE_CMD 0x5a
282 #define IDEFLOPPY_READ10_CMD 0x28
283 #define IDEFLOPPY_READ12_CMD 0xa8
284 #define IDEFLOPPY_READ_CAPACITY_CMD 0x23
285 #define IDEFLOPPY_REQUEST_SENSE_CMD 0x03
286 #define IDEFLOPPY_PREVENT_REMOVAL_CMD 0x1e
287 #define IDEFLOPPY_SEEK_CMD 0x2b
288 #define IDEFLOPPY_START_STOP_CMD 0x1b
289 #define IDEFLOPPY_TEST_UNIT_READY_CMD 0x00
290 #define IDEFLOPPY_VERIFY_CMD 0x2f
291 #define IDEFLOPPY_WRITE10_CMD 0x2a
292 #define IDEFLOPPY_WRITE12_CMD 0xaa
293 #define IDEFLOPPY_WRITE_VERIFY_CMD 0x2e
296 * Defines for the mode sense command
298 #define MODE_SENSE_CURRENT 0x00
299 #define MODE_SENSE_CHANGEABLE 0x01
300 #define MODE_SENSE_DEFAULT 0x02
301 #define MODE_SENSE_SAVED 0x03
304 * IOCTLs used in low-level formatting.
307 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
308 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
309 #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
310 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
313 * Error codes which are returned in rq->errors to the higher part
316 #define IDEFLOPPY_ERROR_GENERAL 101
319 * The following is used to format the general configuration word of
320 * the ATAPI IDENTIFY DEVICE command.
322 struct idefloppy_id_gcw
{
323 #if defined(__LITTLE_ENDIAN_BITFIELD)
324 unsigned packet_size
:2; /* Packet Size */
325 unsigned reserved234
:3; /* Reserved */
326 unsigned drq_type
:2; /* Command packet DRQ type */
327 unsigned removable
:1; /* Removable media */
328 unsigned device_type
:5; /* Device type */
329 unsigned reserved13
:1; /* Reserved */
330 unsigned protocol
:2; /* Protocol type */
331 #elif defined(__BIG_ENDIAN_BITFIELD)
332 unsigned protocol
:2; /* Protocol type */
333 unsigned reserved13
:1; /* Reserved */
334 unsigned device_type
:5; /* Device type */
335 unsigned removable
:1; /* Removable media */
336 unsigned drq_type
:2; /* Command packet DRQ type */
337 unsigned reserved234
:3; /* Reserved */
338 unsigned packet_size
:2; /* Packet Size */
340 #error "Bitfield endianness not defined! Check your byteorder.h"
345 * INQUIRY packet command - Data Format
348 #if defined(__LITTLE_ENDIAN_BITFIELD)
349 unsigned device_type
:5; /* Peripheral Device Type */
350 unsigned reserved0_765
:3; /* Peripheral Qualifier - Reserved */
351 unsigned reserved1_6t0
:7; /* Reserved */
352 unsigned rmb
:1; /* Removable Medium Bit */
353 unsigned ansi_version
:3; /* ANSI Version */
354 unsigned ecma_version
:3; /* ECMA Version */
355 unsigned iso_version
:2; /* ISO Version */
356 unsigned response_format
:4; /* Response Data Format */
357 unsigned reserved3_45
:2; /* Reserved */
358 unsigned reserved3_6
:1; /* TrmIOP - Reserved */
359 unsigned reserved3_7
:1; /* AENC - Reserved */
360 #elif defined(__BIG_ENDIAN_BITFIELD)
361 unsigned reserved0_765
:3; /* Peripheral Qualifier - Reserved */
362 unsigned device_type
:5; /* Peripheral Device Type */
363 unsigned rmb
:1; /* Removable Medium Bit */
364 unsigned reserved1_6t0
:7; /* Reserved */
365 unsigned iso_version
:2; /* ISO Version */
366 unsigned ecma_version
:3; /* ECMA Version */
367 unsigned ansi_version
:3; /* ANSI Version */
368 unsigned reserved3_7
:1; /* AENC - Reserved */
369 unsigned reserved3_6
:1; /* TrmIOP - Reserved */
370 unsigned reserved3_45
:2; /* Reserved */
371 unsigned response_format
:4; /* Response Data Format */
373 #error "Bitfield endianness not defined! Check your byteorder.h"
375 u8 additional_length
; /* Additional Length (total_length-4) */
376 u8 rsv5
, rsv6
, rsv7
; /* Reserved */
377 u8 vendor_id
[8]; /* Vendor Identification */
378 u8 product_id
[16]; /* Product Identification */
379 u8 revision_level
[4]; /* Revision Level */
380 u8 vendor_specific
[20]; /* Vendor Specific - Optional */
381 u8 reserved56t95
[40]; /* Reserved - Optional */
382 /* Additional information may be returned */
383 } idefloppy_inquiry_result_t
;
386 * REQUEST SENSE packet command result - Data Format.
389 #if defined(__LITTLE_ENDIAN_BITFIELD)
390 unsigned error_code
:7; /* Current error (0x70) */
391 unsigned valid
:1; /* The information field conforms to SFF-8070i */
392 u8 reserved1
:8; /* Reserved */
393 unsigned sense_key
:4; /* Sense Key */
394 unsigned reserved2_4
:1; /* Reserved */
395 unsigned ili
:1; /* Incorrect Length Indicator */
396 unsigned reserved2_67
:2;
397 #elif defined(__BIG_ENDIAN_BITFIELD)
398 unsigned valid
:1; /* The information field conforms to SFF-8070i */
399 unsigned error_code
:7; /* Current error (0x70) */
400 u8 reserved1
:8; /* Reserved */
401 unsigned reserved2_67
:2;
402 unsigned ili
:1; /* Incorrect Length Indicator */
403 unsigned reserved2_4
:1; /* Reserved */
404 unsigned sense_key
:4; /* Sense Key */
406 #error "Bitfield endianness not defined! Check your byteorder.h"
408 u32 information
__attribute__ ((packed
));
409 u8 asl
; /* Additional sense length (n-7) */
410 u32 command_specific
; /* Additional command specific information */
411 u8 asc
; /* Additional Sense Code */
412 u8 ascq
; /* Additional Sense Code Qualifier */
413 u8 replaceable_unit_code
; /* Field Replaceable Unit Code */
415 u8 pad
[2]; /* Padding to 20 bytes */
416 } idefloppy_request_sense_result_t
;
419 * Pages of the SELECT SENSE / MODE SENSE packet commands.
421 #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
422 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
425 * Mode Parameter Header for the MODE SENSE packet command
428 u16 mode_data_length
; /* Length of the following data transfer */
429 u8 medium_type
; /* Medium Type */
430 #if defined(__LITTLE_ENDIAN_BITFIELD)
431 unsigned reserved3
:7;
432 unsigned wp
:1; /* Write protect */
433 #elif defined(__BIG_ENDIAN_BITFIELD)
434 unsigned wp
:1; /* Write protect */
435 unsigned reserved3
:7;
437 #error "Bitfield endianness not defined! Check your byteorder.h"
440 } idefloppy_mode_parameter_header_t
;
442 static DEFINE_MUTEX(idefloppy_ref_mutex
);
444 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
446 #define ide_floppy_g(disk) \
447 container_of((disk)->private_data, struct ide_floppy_obj, driver)
449 static struct ide_floppy_obj
*ide_floppy_get(struct gendisk
*disk
)
451 struct ide_floppy_obj
*floppy
= NULL
;
453 mutex_lock(&idefloppy_ref_mutex
);
454 floppy
= ide_floppy_g(disk
);
456 kref_get(&floppy
->kref
);
457 mutex_unlock(&idefloppy_ref_mutex
);
461 static void ide_floppy_release(struct kref
*);
463 static void ide_floppy_put(struct ide_floppy_obj
*floppy
)
465 mutex_lock(&idefloppy_ref_mutex
);
466 kref_put(&floppy
->kref
, ide_floppy_release
);
467 mutex_unlock(&idefloppy_ref_mutex
);
471 * Too bad. The drive wants to send us data which we are not ready to accept.
472 * Just throw it away.
474 static void idefloppy_discard_data (ide_drive_t
*drive
, unsigned int bcount
)
477 (void) HWIF(drive
)->INB(IDE_DATA_REG
);
480 #if IDEFLOPPY_DEBUG_BUGS
481 static void idefloppy_write_zeros (ide_drive_t
*drive
, unsigned int bcount
)
484 HWIF(drive
)->OUTB(0, IDE_DATA_REG
);
486 #endif /* IDEFLOPPY_DEBUG_BUGS */
490 * idefloppy_do_end_request is used to finish servicing a request.
492 * For read/write requests, we will call ide_end_request to pass to the
495 static int idefloppy_do_end_request(ide_drive_t
*drive
, int uptodate
, int nsecs
)
497 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
498 struct request
*rq
= HWGROUP(drive
)->rq
;
501 debug_log(KERN_INFO
"Reached idefloppy_end_request\n");
504 case 0: error
= IDEFLOPPY_ERROR_GENERAL
; break;
505 case 1: error
= 0; break;
506 default: error
= uptodate
;
509 floppy
->failed_pc
= NULL
;
510 /* Why does this happen? */
513 if (!blk_special_request(rq
)) {
514 /* our real local end request function */
515 ide_end_request(drive
, uptodate
, nsecs
);
519 /* fixme: need to move this local also */
520 ide_end_drive_cmd(drive
, 0, 0);
524 static void idefloppy_input_buffers (ide_drive_t
*drive
, idefloppy_pc_t
*pc
, unsigned int bcount
)
526 struct request
*rq
= pc
->rq
;
527 struct bio_vec
*bvec
;
528 struct req_iterator iter
;
533 rq_for_each_segment(bvec
, rq
, iter
) {
537 count
= min(bvec
->bv_len
, bcount
);
539 data
= bvec_kmap_irq(bvec
, &flags
);
540 drive
->hwif
->atapi_input_bytes(drive
, data
, count
);
541 bvec_kunmap_irq(data
, &flags
);
544 pc
->b_count
+= count
;
548 idefloppy_do_end_request(drive
, 1, done
>> 9);
551 printk(KERN_ERR
"%s: leftover data in idefloppy_input_buffers, bcount == %d\n", drive
->name
, bcount
);
552 idefloppy_discard_data(drive
, bcount
);
556 static void idefloppy_output_buffers (ide_drive_t
*drive
, idefloppy_pc_t
*pc
, unsigned int bcount
)
558 struct request
*rq
= pc
->rq
;
559 struct req_iterator iter
;
560 struct bio_vec
*bvec
;
565 rq_for_each_segment(bvec
, rq
, iter
) {
569 count
= min(bvec
->bv_len
, bcount
);
571 data
= bvec_kmap_irq(bvec
, &flags
);
572 drive
->hwif
->atapi_output_bytes(drive
, data
, count
);
573 bvec_kunmap_irq(data
, &flags
);
576 pc
->b_count
+= count
;
580 idefloppy_do_end_request(drive
, 1, done
>> 9);
582 #if IDEFLOPPY_DEBUG_BUGS
584 printk(KERN_ERR
"%s: leftover data in idefloppy_output_buffers, bcount == %d\n", drive
->name
, bcount
);
585 idefloppy_write_zeros(drive
, bcount
);
590 static void idefloppy_update_buffers (ide_drive_t
*drive
, idefloppy_pc_t
*pc
)
592 struct request
*rq
= pc
->rq
;
593 struct bio
*bio
= rq
->bio
;
595 while ((bio
= rq
->bio
) != NULL
)
596 idefloppy_do_end_request(drive
, 1, 0);
600 * idefloppy_queue_pc_head generates a new packet command request in front
601 * of the request queue, before the current request, so that it will be
602 * processed immediately, on the next pass through the driver.
604 static void idefloppy_queue_pc_head (ide_drive_t
*drive
,idefloppy_pc_t
*pc
,struct request
*rq
)
606 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
608 ide_init_drive_cmd(rq
);
609 rq
->buffer
= (char *) pc
;
610 rq
->cmd_type
= REQ_TYPE_SPECIAL
;
611 rq
->rq_disk
= floppy
->disk
;
612 (void) ide_do_drive_cmd(drive
, rq
, ide_preempt
);
615 static idefloppy_pc_t
*idefloppy_next_pc_storage (ide_drive_t
*drive
)
617 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
619 if (floppy
->pc_stack_index
== IDEFLOPPY_PC_STACK
)
620 floppy
->pc_stack_index
=0;
621 return (&floppy
->pc_stack
[floppy
->pc_stack_index
++]);
624 static struct request
*idefloppy_next_rq_storage (ide_drive_t
*drive
)
626 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
628 if (floppy
->rq_stack_index
== IDEFLOPPY_PC_STACK
)
629 floppy
->rq_stack_index
= 0;
630 return (&floppy
->rq_stack
[floppy
->rq_stack_index
++]);
634 * idefloppy_analyze_error is called on each failed packet command retry
635 * to analyze the request sense.
637 static void idefloppy_analyze_error (ide_drive_t
*drive
,idefloppy_request_sense_result_t
*result
)
639 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
641 floppy
->sense_key
= result
->sense_key
;
642 floppy
->asc
= result
->asc
;
643 floppy
->ascq
= result
->ascq
;
644 floppy
->progress_indication
= result
->sksv
[0] & 0x80 ?
645 (u16
)get_unaligned((u16
*)(result
->sksv
+1)):0x10000;
646 if (floppy
->failed_pc
)
647 debug_log(KERN_INFO
"ide-floppy: pc = %x, sense key = %x, "
648 "asc = %x, ascq = %x\n", floppy
->failed_pc
->c
[0],
649 result
->sense_key
, result
->asc
, result
->ascq
);
651 debug_log(KERN_INFO
"ide-floppy: sense key = %x, asc = %x, "
652 "ascq = %x\n", result
->sense_key
,
653 result
->asc
, result
->ascq
);
656 static void idefloppy_request_sense_callback (ide_drive_t
*drive
)
658 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
660 debug_log(KERN_INFO
"ide-floppy: Reached %s\n", __FUNCTION__
);
662 if (!floppy
->pc
->error
) {
663 idefloppy_analyze_error(drive
,(idefloppy_request_sense_result_t
*) floppy
->pc
->buffer
);
664 idefloppy_do_end_request(drive
, 1, 0);
666 printk(KERN_ERR
"Error in REQUEST SENSE itself - Aborting request!\n");
667 idefloppy_do_end_request(drive
, 0, 0);
672 * General packet command callback function.
674 static void idefloppy_pc_callback (ide_drive_t
*drive
)
676 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
678 debug_log(KERN_INFO
"ide-floppy: Reached %s\n", __FUNCTION__
);
680 idefloppy_do_end_request(drive
, floppy
->pc
->error
? 0 : 1, 0);
684 * idefloppy_init_pc initializes a packet command.
686 static void idefloppy_init_pc (idefloppy_pc_t
*pc
)
688 memset(pc
->c
, 0, 12);
691 pc
->request_transfer
= 0;
692 pc
->buffer
= pc
->pc_buffer
;
693 pc
->buffer_size
= IDEFLOPPY_PC_BUFFER_SIZE
;
694 pc
->callback
= &idefloppy_pc_callback
;
697 static void idefloppy_create_request_sense_cmd (idefloppy_pc_t
*pc
)
699 idefloppy_init_pc(pc
);
700 pc
->c
[0] = IDEFLOPPY_REQUEST_SENSE_CMD
;
702 pc
->request_transfer
= 18;
703 pc
->callback
= &idefloppy_request_sense_callback
;
707 * idefloppy_retry_pc is called when an error was detected during the
708 * last packet command. We queue a request sense packet command in
709 * the head of the request list.
711 static void idefloppy_retry_pc (ide_drive_t
*drive
)
716 (void)drive
->hwif
->INB(IDE_ERROR_REG
);
717 pc
= idefloppy_next_pc_storage(drive
);
718 rq
= idefloppy_next_rq_storage(drive
);
719 idefloppy_create_request_sense_cmd(pc
);
720 idefloppy_queue_pc_head(drive
, pc
, rq
);
724 * idefloppy_pc_intr is the usual interrupt handler which will be called
725 * during a packet command.
727 static ide_startstop_t
idefloppy_pc_intr (ide_drive_t
*drive
)
729 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
730 ide_hwif_t
*hwif
= drive
->hwif
;
731 idefloppy_pc_t
*pc
= floppy
->pc
;
732 struct request
*rq
= pc
->rq
;
737 debug_log(KERN_INFO
"ide-floppy: Reached %s interrupt handler\n",
740 if (test_bit(PC_DMA_IN_PROGRESS
, &pc
->flags
)) {
741 if (HWIF(drive
)->ide_dma_end(drive
)) {
742 set_bit(PC_DMA_ERROR
, &pc
->flags
);
744 pc
->actually_transferred
= pc
->request_transfer
;
745 idefloppy_update_buffers(drive
, pc
);
747 debug_log(KERN_INFO
"ide-floppy: DMA finished\n");
750 /* Clear the interrupt */
751 stat
= drive
->hwif
->INB(IDE_STATUS_REG
);
753 if ((stat
& DRQ_STAT
) == 0) { /* No more interrupts */
754 debug_log(KERN_INFO
"Packet command completed, %d bytes "
755 "transferred\n", pc
->actually_transferred
);
756 clear_bit(PC_DMA_IN_PROGRESS
, &pc
->flags
);
758 local_irq_enable_in_hardirq();
760 if ((stat
& ERR_STAT
) || test_bit(PC_DMA_ERROR
, &pc
->flags
)) {
762 debug_log(KERN_INFO
"ide-floppy: %s: I/O error\n",
765 if (pc
->c
[0] == IDEFLOPPY_REQUEST_SENSE_CMD
) {
766 printk(KERN_ERR
"ide-floppy: I/O error in "
767 "request sense command\n");
768 return ide_do_reset(drive
);
770 /* Retry operation */
771 idefloppy_retry_pc(drive
);
772 /* queued, but not started */
776 if (floppy
->failed_pc
== pc
)
777 floppy
->failed_pc
= NULL
;
778 /* Command finished - Call the callback function */
783 if (test_and_clear_bit(PC_DMA_IN_PROGRESS
, &pc
->flags
)) {
784 printk(KERN_ERR
"ide-floppy: The floppy wants to issue "
785 "more interrupts in DMA mode\n");
787 return ide_do_reset(drive
);
790 /* Get the number of bytes to transfer */
791 bcount
= (hwif
->INB(IDE_BCOUNTH_REG
) << 8) |
792 hwif
->INB(IDE_BCOUNTL_REG
);
793 /* on this interrupt */
794 ireason
= hwif
->INB(IDE_IREASON_REG
);
797 printk(KERN_ERR
"ide-floppy: CoD != 0 in idefloppy_pc_intr\n");
798 return ide_do_reset(drive
);
800 if (((ireason
& IO
) == IO
) == test_bit(PC_WRITING
, &pc
->flags
)) {
801 /* Hopefully, we will never get here */
802 printk(KERN_ERR
"ide-floppy: We wanted to %s, ",
803 (ireason
& IO
) ? "Write" : "Read");
804 printk(KERN_ERR
"but the floppy wants us to %s !\n",
805 (ireason
& IO
) ? "Read" : "Write");
806 return ide_do_reset(drive
);
808 if (!test_bit(PC_WRITING
, &pc
->flags
)) {
809 /* Reading - Check that we have enough space */
810 temp
= pc
->actually_transferred
+ bcount
;
811 if (temp
> pc
->request_transfer
) {
812 if (temp
> pc
->buffer_size
) {
813 printk(KERN_ERR
"ide-floppy: The floppy wants "
814 "to send us more data than expected "
815 "- discarding data\n");
816 idefloppy_discard_data(drive
, bcount
);
817 BUG_ON(HWGROUP(drive
)->handler
!= NULL
);
818 ide_set_handler(drive
,
824 debug_log(KERN_NOTICE
"ide-floppy: The floppy wants to "
825 "send us more data than expected - "
826 "allowing transfer\n");
829 if (test_bit(PC_WRITING
, &pc
->flags
)) {
830 if (pc
->buffer
!= NULL
)
831 /* Write the current buffer */
832 hwif
->atapi_output_bytes(drive
, pc
->current_position
,
835 idefloppy_output_buffers(drive
, pc
, bcount
);
837 if (pc
->buffer
!= NULL
)
838 /* Read the current buffer */
839 hwif
->atapi_input_bytes(drive
, pc
->current_position
,
842 idefloppy_input_buffers(drive
, pc
, bcount
);
844 /* Update the current position */
845 pc
->actually_transferred
+= bcount
;
846 pc
->current_position
+= bcount
;
848 BUG_ON(HWGROUP(drive
)->handler
!= NULL
);
849 ide_set_handler(drive
, &idefloppy_pc_intr
, IDEFLOPPY_WAIT_CMD
, NULL
); /* And set the interrupt handler again */
854 * This is the original routine that did the packet transfer.
855 * It fails at high speeds on the Iomega ZIP drive, so there's a slower version
856 * for that drive below. The algorithm is chosen based on drive type
858 static ide_startstop_t
idefloppy_transfer_pc (ide_drive_t
*drive
)
860 ide_startstop_t startstop
;
861 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
864 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
, BUSY_STAT
, WAIT_READY
)) {
865 printk(KERN_ERR
"ide-floppy: Strange, packet command "
866 "initiated yet DRQ isn't asserted\n");
869 ireason
= drive
->hwif
->INB(IDE_IREASON_REG
);
870 if ((ireason
& CD
) == 0 || (ireason
& IO
)) {
871 printk(KERN_ERR
"ide-floppy: (IO,CoD) != (0,1) while "
872 "issuing a packet command\n");
873 return ide_do_reset(drive
);
875 BUG_ON(HWGROUP(drive
)->handler
!= NULL
);
876 /* Set the interrupt routine */
877 ide_set_handler(drive
, &idefloppy_pc_intr
, IDEFLOPPY_WAIT_CMD
, NULL
);
878 /* Send the actual packet */
879 HWIF(drive
)->atapi_output_bytes(drive
, floppy
->pc
->c
, 12);
885 * What we have here is a classic case of a top half / bottom half
886 * interrupt service routine. In interrupt mode, the device sends
887 * an interrupt to signal it's ready to receive a packet. However,
888 * we need to delay about 2-3 ticks before issuing the packet or we
891 * So, follow carefully. transfer_pc1 is called as an interrupt (or
892 * directly). In either case, when the device says it's ready for a
893 * packet, we schedule the packet transfer to occur about 2-3 ticks
894 * later in transfer_pc2.
896 static int idefloppy_transfer_pc2 (ide_drive_t
*drive
)
898 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
900 /* Send the actual packet */
901 HWIF(drive
)->atapi_output_bytes(drive
, floppy
->pc
->c
, 12);
902 /* Timeout for the packet command */
903 return IDEFLOPPY_WAIT_CMD
;
906 static ide_startstop_t
idefloppy_transfer_pc1 (ide_drive_t
*drive
)
908 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
909 ide_startstop_t startstop
;
912 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
, BUSY_STAT
, WAIT_READY
)) {
913 printk(KERN_ERR
"ide-floppy: Strange, packet command "
914 "initiated yet DRQ isn't asserted\n");
917 ireason
= drive
->hwif
->INB(IDE_IREASON_REG
);
918 if ((ireason
& CD
) == 0 || (ireason
& IO
)) {
919 printk(KERN_ERR
"ide-floppy: (IO,CoD) != (0,1) "
920 "while issuing a packet command\n");
921 return ide_do_reset(drive
);
924 * The following delay solves a problem with ATAPI Zip 100 drives
925 * where the Busy flag was apparently being deasserted before the
926 * unit was ready to receive data. This was happening on a
927 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
928 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
929 * used until after the packet is moved in about 50 msec.
931 BUG_ON(HWGROUP(drive
)->handler
!= NULL
);
932 ide_set_handler(drive
,
933 &idefloppy_pc_intr
, /* service routine for packet command */
934 floppy
->ticks
, /* wait this long before "failing" */
935 &idefloppy_transfer_pc2
); /* fail == transfer_pc2 */
940 * idefloppy_should_report_error()
942 * Supresses error messages resulting from Medium not present
944 static inline int idefloppy_should_report_error(idefloppy_floppy_t
*floppy
)
946 if (floppy
->sense_key
== 0x02 &&
947 floppy
->asc
== 0x3a &&
948 floppy
->ascq
== 0x00)
954 * Issue a packet command
956 static ide_startstop_t
idefloppy_issue_pc (ide_drive_t
*drive
, idefloppy_pc_t
*pc
)
958 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
959 ide_hwif_t
*hwif
= drive
->hwif
;
960 ide_handler_t
*pkt_xfer_routine
;
964 if (floppy
->failed_pc
== NULL
&&
965 pc
->c
[0] != IDEFLOPPY_REQUEST_SENSE_CMD
)
966 floppy
->failed_pc
= pc
;
967 /* Set the current packet command */
970 if (pc
->retries
> IDEFLOPPY_MAX_PC_RETRIES
||
971 test_bit(PC_ABORT
, &pc
->flags
)) {
973 * We will "abort" retrying a packet command in case
974 * a legitimate error code was received.
976 if (!test_bit(PC_ABORT
, &pc
->flags
)) {
977 if (!test_bit(PC_SUPPRESS_ERROR
, &pc
->flags
)) {
978 if (idefloppy_should_report_error(floppy
))
979 printk(KERN_ERR
"ide-floppy: %s: I/O error, "
980 "pc = %2x, key = %2x, "
981 "asc = %2x, ascq = %2x\n",
982 drive
->name
, pc
->c
[0],
984 floppy
->asc
, floppy
->ascq
);
987 pc
->error
= IDEFLOPPY_ERROR_GENERAL
;
989 floppy
->failed_pc
= NULL
;
994 debug_log(KERN_INFO
"Retry number - %d\n",pc
->retries
);
997 /* We haven't transferred any data yet */
998 pc
->actually_transferred
= 0;
999 pc
->current_position
= pc
->buffer
;
1000 bcount
= min(pc
->request_transfer
, 63 * 1024);
1002 if (test_and_clear_bit(PC_DMA_ERROR
, &pc
->flags
))
1007 if (test_bit(PC_DMA_RECOMMENDED
, &pc
->flags
) && drive
->using_dma
)
1008 dma
= !hwif
->dma_setup(drive
);
1010 ide_pktcmd_tf_load(drive
, IDE_TFLAG_NO_SELECT_MASK
|
1011 IDE_TFLAG_OUT_DEVICE
, bcount
, dma
);
1013 if (dma
) { /* Begin DMA, if necessary */
1014 set_bit(PC_DMA_IN_PROGRESS
, &pc
->flags
);
1015 hwif
->dma_start(drive
);
1018 /* Can we transfer the packet when we get the interrupt or wait? */
1019 if (test_bit(IDEFLOPPY_ZIP_DRIVE
, &floppy
->flags
)) {
1021 pkt_xfer_routine
= &idefloppy_transfer_pc1
;
1024 pkt_xfer_routine
= &idefloppy_transfer_pc
;
1027 if (test_bit (IDEFLOPPY_DRQ_INTERRUPT
, &floppy
->flags
)) {
1028 /* Issue the packet command */
1029 ide_execute_command(drive
, WIN_PACKETCMD
,
1035 /* Issue the packet command */
1036 HWIF(drive
)->OUTB(WIN_PACKETCMD
, IDE_COMMAND_REG
);
1037 return (*pkt_xfer_routine
) (drive
);
1041 static void idefloppy_rw_callback (ide_drive_t
*drive
)
1043 debug_log(KERN_INFO
"ide-floppy: Reached idefloppy_rw_callback\n");
1045 idefloppy_do_end_request(drive
, 1, 0);
1049 static void idefloppy_create_prevent_cmd (idefloppy_pc_t
*pc
, int prevent
)
1051 debug_log(KERN_INFO
"ide-floppy: creating prevent removal command, "
1052 "prevent = %d\n", prevent
);
1054 idefloppy_init_pc(pc
);
1055 pc
->c
[0] = IDEFLOPPY_PREVENT_REMOVAL_CMD
;
1059 static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t
*pc
)
1061 idefloppy_init_pc(pc
);
1062 pc
->c
[0] = IDEFLOPPY_READ_CAPACITY_CMD
;
1065 pc
->request_transfer
= 255;
1068 static void idefloppy_create_format_unit_cmd (idefloppy_pc_t
*pc
, int b
, int l
,
1071 idefloppy_init_pc(pc
);
1072 pc
->c
[0] = IDEFLOPPY_FORMAT_UNIT_CMD
;
1075 memset(pc
->buffer
, 0, 12);
1076 pc
->buffer
[1] = 0xA2;
1077 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
1079 if (flags
& 1) /* Verify bit on... */
1080 pc
->buffer
[1] ^= 0x20; /* ... turn off DCRT bit */
1083 put_unaligned(htonl(b
), (unsigned int *)(&pc
->buffer
[4]));
1084 put_unaligned(htonl(l
), (unsigned int *)(&pc
->buffer
[8]));
1086 set_bit(PC_WRITING
, &pc
->flags
);
1090 * A mode sense command is used to "sense" floppy parameters.
1092 static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t
*pc
, u8 page_code
, u8 type
)
1094 u16 length
= sizeof(idefloppy_mode_parameter_header_t
);
1096 idefloppy_init_pc(pc
);
1097 pc
->c
[0] = IDEFLOPPY_MODE_SENSE_CMD
;
1099 pc
->c
[2] = page_code
+ (type
<< 6);
1101 switch (page_code
) {
1102 case IDEFLOPPY_CAPABILITIES_PAGE
:
1105 case IDEFLOPPY_FLEXIBLE_DISK_PAGE
:
1109 printk(KERN_ERR
"ide-floppy: unsupported page code "
1110 "in create_mode_sense_cmd\n");
1112 put_unaligned(htons(length
), (u16
*) &pc
->c
[7]);
1113 pc
->request_transfer
= length
;
1116 static void idefloppy_create_start_stop_cmd (idefloppy_pc_t
*pc
, int start
)
1118 idefloppy_init_pc(pc
);
1119 pc
->c
[0] = IDEFLOPPY_START_STOP_CMD
;
1123 static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t
*pc
)
1125 idefloppy_init_pc(pc
);
1126 pc
->c
[0] = IDEFLOPPY_TEST_UNIT_READY_CMD
;
1129 static void idefloppy_create_rw_cmd (idefloppy_floppy_t
*floppy
, idefloppy_pc_t
*pc
, struct request
*rq
, unsigned long sector
)
1131 int block
= sector
/ floppy
->bs_factor
;
1132 int blocks
= rq
->nr_sectors
/ floppy
->bs_factor
;
1133 int cmd
= rq_data_dir(rq
);
1135 debug_log("create_rw1%d_cmd: block == %d, blocks == %d\n",
1136 2 * test_bit (IDEFLOPPY_USE_READ12
, &floppy
->flags
),
1139 idefloppy_init_pc(pc
);
1140 if (test_bit(IDEFLOPPY_USE_READ12
, &floppy
->flags
)) {
1141 pc
->c
[0] = cmd
== READ
? IDEFLOPPY_READ12_CMD
: IDEFLOPPY_WRITE12_CMD
;
1142 put_unaligned(htonl(blocks
), (unsigned int *) &pc
->c
[6]);
1144 pc
->c
[0] = cmd
== READ
? IDEFLOPPY_READ10_CMD
: IDEFLOPPY_WRITE10_CMD
;
1145 put_unaligned(htons(blocks
), (unsigned short *) &pc
->c
[7]);
1147 put_unaligned(htonl(block
), (unsigned int *) &pc
->c
[2]);
1148 pc
->callback
= &idefloppy_rw_callback
;
1150 pc
->b_count
= cmd
== READ
? 0 : rq
->bio
->bi_size
;
1151 if (rq
->cmd_flags
& REQ_RW
)
1152 set_bit(PC_WRITING
, &pc
->flags
);
1154 pc
->request_transfer
= pc
->buffer_size
= blocks
* floppy
->block_size
;
1155 set_bit(PC_DMA_RECOMMENDED
, &pc
->flags
);
1159 idefloppy_blockpc_cmd(idefloppy_floppy_t
*floppy
, idefloppy_pc_t
*pc
, struct request
*rq
)
1161 idefloppy_init_pc(pc
);
1162 pc
->callback
= &idefloppy_rw_callback
;
1163 memcpy(pc
->c
, rq
->cmd
, sizeof(pc
->c
));
1165 pc
->b_count
= rq
->data_len
;
1166 if (rq
->data_len
&& rq_data_dir(rq
) == WRITE
)
1167 set_bit(PC_WRITING
, &pc
->flags
);
1168 pc
->buffer
= rq
->data
;
1170 set_bit(PC_DMA_RECOMMENDED
, &pc
->flags
);
1173 * possibly problematic, doesn't look like ide-floppy correctly
1174 * handled scattered requests if dma fails...
1176 pc
->request_transfer
= pc
->buffer_size
= rq
->data_len
;
1180 * idefloppy_do_request is our request handling function.
1182 static ide_startstop_t
idefloppy_do_request (ide_drive_t
*drive
, struct request
*rq
, sector_t block_s
)
1184 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1186 unsigned long block
= (unsigned long)block_s
;
1188 debug_log(KERN_INFO
"dev: %s, flags: %lx, errors: %d\n",
1189 rq
->rq_disk
? rq
->rq_disk
->disk_name
: "?",
1190 rq
->flags
, rq
->errors
);
1191 debug_log(KERN_INFO
"sector: %ld, nr_sectors: %ld, "
1192 "current_nr_sectors: %d\n", (long)rq
->sector
,
1193 rq
->nr_sectors
, rq
->current_nr_sectors
);
1195 if (rq
->errors
>= ERROR_MAX
) {
1196 if (floppy
->failed_pc
!= NULL
) {
1197 if (idefloppy_should_report_error(floppy
))
1198 printk(KERN_ERR
"ide-floppy: %s: I/O error, pc = %2x,"
1199 " key = %2x, asc = %2x, ascq = %2x\n",
1200 drive
->name
, floppy
->failed_pc
->c
[0],
1201 floppy
->sense_key
, floppy
->asc
, floppy
->ascq
);
1204 printk(KERN_ERR
"ide-floppy: %s: I/O error\n",
1206 idefloppy_do_end_request(drive
, 0, 0);
1209 if (blk_fs_request(rq
)) {
1210 if (((long)rq
->sector
% floppy
->bs_factor
) ||
1211 (rq
->nr_sectors
% floppy
->bs_factor
)) {
1212 printk("%s: unsupported r/w request size\n",
1214 idefloppy_do_end_request(drive
, 0, 0);
1217 pc
= idefloppy_next_pc_storage(drive
);
1218 idefloppy_create_rw_cmd(floppy
, pc
, rq
, block
);
1219 } else if (blk_special_request(rq
)) {
1220 pc
= (idefloppy_pc_t
*) rq
->buffer
;
1221 } else if (blk_pc_request(rq
)) {
1222 pc
= idefloppy_next_pc_storage(drive
);
1223 idefloppy_blockpc_cmd(floppy
, pc
, rq
);
1225 blk_dump_rq_flags(rq
,
1226 "ide-floppy: unsupported command in queue");
1227 idefloppy_do_end_request(drive
, 0, 0);
1232 return idefloppy_issue_pc(drive
, pc
);
1236 * idefloppy_queue_pc_tail adds a special packet command request to the
1237 * tail of the request queue, and waits for it to be serviced.
1239 static int idefloppy_queue_pc_tail (ide_drive_t
*drive
,idefloppy_pc_t
*pc
)
1241 struct ide_floppy_obj
*floppy
= drive
->driver_data
;
1244 ide_init_drive_cmd (&rq
);
1245 rq
.buffer
= (char *) pc
;
1246 rq
.cmd_type
= REQ_TYPE_SPECIAL
;
1247 rq
.rq_disk
= floppy
->disk
;
1249 return ide_do_drive_cmd(drive
, &rq
, ide_wait
);
1253 * Look at the flexible disk page parameters. We will ignore the CHS
1254 * capacity parameters and use the LBA parameters instead.
1256 static int idefloppy_get_flexible_disk_page (ide_drive_t
*drive
)
1258 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1260 idefloppy_mode_parameter_header_t
*header
;
1261 idefloppy_flexible_disk_page_t
*page
;
1262 int capacity
, lba_capacity
;
1264 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_FLEXIBLE_DISK_PAGE
, MODE_SENSE_CURRENT
);
1265 if (idefloppy_queue_pc_tail(drive
,&pc
)) {
1266 printk(KERN_ERR
"ide-floppy: Can't get flexible disk "
1267 "page parameters\n");
1270 header
= (idefloppy_mode_parameter_header_t
*) pc
.buffer
;
1271 floppy
->wp
= header
->wp
;
1272 set_disk_ro(floppy
->disk
, floppy
->wp
);
1273 page
= (idefloppy_flexible_disk_page_t
*) (header
+ 1);
1275 page
->transfer_rate
= ntohs(page
->transfer_rate
);
1276 page
->sector_size
= ntohs(page
->sector_size
);
1277 page
->cyls
= ntohs(page
->cyls
);
1278 page
->rpm
= ntohs(page
->rpm
);
1279 capacity
= page
->cyls
* page
->heads
* page
->sectors
* page
->sector_size
;
1280 if (memcmp (page
, &floppy
->flexible_disk_page
, sizeof (idefloppy_flexible_disk_page_t
)))
1281 printk(KERN_INFO
"%s: %dkB, %d/%d/%d CHS, %d kBps, "
1282 "%d sector size, %d rpm\n",
1283 drive
->name
, capacity
/ 1024, page
->cyls
,
1284 page
->heads
, page
->sectors
,
1285 page
->transfer_rate
/ 8, page
->sector_size
, page
->rpm
);
1287 floppy
->flexible_disk_page
= *page
;
1288 drive
->bios_cyl
= page
->cyls
;
1289 drive
->bios_head
= page
->heads
;
1290 drive
->bios_sect
= page
->sectors
;
1291 lba_capacity
= floppy
->blocks
* floppy
->block_size
;
1292 if (capacity
< lba_capacity
) {
1293 printk(KERN_NOTICE
"%s: The disk reports a capacity of %d "
1294 "bytes, but the drive only handles %d\n",
1295 drive
->name
, lba_capacity
, capacity
);
1296 floppy
->blocks
= floppy
->block_size
? capacity
/ floppy
->block_size
: 0;
1301 static int idefloppy_get_capability_page(ide_drive_t
*drive
)
1303 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1305 idefloppy_mode_parameter_header_t
*header
;
1306 idefloppy_capabilities_page_t
*page
;
1309 idefloppy_create_mode_sense_cmd(&pc
, IDEFLOPPY_CAPABILITIES_PAGE
,
1310 MODE_SENSE_CURRENT
);
1312 set_bit(PC_SUPPRESS_ERROR
, &pc
.flags
);
1313 if (idefloppy_queue_pc_tail(drive
,&pc
)) {
1317 header
= (idefloppy_mode_parameter_header_t
*) pc
.buffer
;
1318 page
= (idefloppy_capabilities_page_t
*)(header
+1);
1319 floppy
->srfp
= page
->srfp
;
1324 * Determine if a media is present in the floppy drive, and if so,
1327 static int idefloppy_get_capacity (ide_drive_t
*drive
)
1329 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1331 idefloppy_capacity_header_t
*header
;
1332 idefloppy_capacity_descriptor_t
*descriptor
;
1333 int i
, descriptors
, rc
= 1, blocks
, length
;
1335 drive
->bios_cyl
= 0;
1336 drive
->bios_head
= drive
->bios_sect
= 0;
1338 floppy
->bs_factor
= 1;
1339 set_capacity(floppy
->disk
, 0);
1341 idefloppy_create_read_capacity_cmd(&pc
);
1342 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1343 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
1346 header
= (idefloppy_capacity_header_t
*) pc
.buffer
;
1347 descriptors
= header
->length
/ sizeof(idefloppy_capacity_descriptor_t
);
1348 descriptor
= (idefloppy_capacity_descriptor_t
*) (header
+ 1);
1350 for (i
= 0; i
< descriptors
; i
++, descriptor
++) {
1351 blocks
= descriptor
->blocks
= ntohl(descriptor
->blocks
);
1352 length
= descriptor
->length
= ntohs(descriptor
->length
);
1356 switch (descriptor
->dc
) {
1357 /* Clik! drive returns this instead of CAPACITY_CURRENT */
1358 case CAPACITY_UNFORMATTED
:
1359 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
))
1361 * If it is not a clik drive, break out
1362 * (maintains previous driver behaviour)
1365 case CAPACITY_CURRENT
:
1366 /* Normal Zip/LS-120 disks */
1367 if (memcmp(descriptor
, &floppy
->capacity
, sizeof (idefloppy_capacity_descriptor_t
)))
1368 printk(KERN_INFO
"%s: %dkB, %d blocks, %d "
1369 "sector size\n", drive
->name
,
1370 blocks
* length
/ 1024, blocks
, length
);
1371 floppy
->capacity
= *descriptor
;
1372 if (!length
|| length
% 512) {
1373 printk(KERN_NOTICE
"%s: %d bytes block size "
1374 "not supported\n", drive
->name
, length
);
1376 floppy
->blocks
= blocks
;
1377 floppy
->block_size
= length
;
1378 if ((floppy
->bs_factor
= length
/ 512) != 1)
1379 printk(KERN_NOTICE
"%s: warning: non "
1380 "512 bytes block size not "
1381 "fully supported\n",
1386 case CAPACITY_NO_CARTRIDGE
:
1388 * This is a KERN_ERR so it appears on screen
1389 * for the user to see
1391 printk(KERN_ERR
"%s: No disk in drive\n", drive
->name
);
1393 case CAPACITY_INVALID
:
1394 printk(KERN_ERR
"%s: Invalid capacity for disk "
1395 "in drive\n", drive
->name
);
1400 debug_log( "Descriptor 0 Code: %d\n",
1403 debug_log( "Descriptor %d: %dkB, %d blocks, %d "
1404 "sector size\n", i
, blocks
* length
/ 1024, blocks
,
1408 /* Clik! disk does not support get_flexible_disk_page */
1409 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
)) {
1410 (void) idefloppy_get_flexible_disk_page(drive
);
1413 set_capacity(floppy
->disk
, floppy
->blocks
* floppy
->bs_factor
);
1418 ** Obtain the list of formattable capacities.
1419 ** Very similar to idefloppy_get_capacity, except that we push the capacity
1420 ** descriptors to userland, instead of our own structures.
1422 ** Userland gives us the following structure:
1424 ** struct idefloppy_format_capacities {
1432 ** userland initializes nformats to the number of allocated formats[]
1433 ** records. On exit we set nformats to the number of records we've
1434 ** actually initialized.
1438 static int idefloppy_get_format_capacities(ide_drive_t
*drive
, int __user
*arg
)
1441 idefloppy_capacity_header_t
*header
;
1442 idefloppy_capacity_descriptor_t
*descriptor
;
1443 int i
, descriptors
, blocks
, length
;
1448 if (get_user(u_array_size
, arg
))
1451 if (u_array_size
<= 0)
1454 idefloppy_create_read_capacity_cmd(&pc
);
1455 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1456 printk(KERN_ERR
"ide-floppy: Can't get floppy parameters\n");
1459 header
= (idefloppy_capacity_header_t
*) pc
.buffer
;
1460 descriptors
= header
->length
/
1461 sizeof(idefloppy_capacity_descriptor_t
);
1462 descriptor
= (idefloppy_capacity_descriptor_t
*) (header
+ 1);
1468 ** We always skip the first capacity descriptor. That's the
1469 ** current capacity. We are interested in the remaining descriptors,
1470 ** the formattable capacities.
1473 for (i
=0; i
<descriptors
; i
++, descriptor
++) {
1474 if (u_index
>= u_array_size
)
1475 break; /* User-supplied buffer too small */
1477 continue; /* Skip the first descriptor */
1479 blocks
= ntohl(descriptor
->blocks
);
1480 length
= ntohs(descriptor
->length
);
1482 if (put_user(blocks
, argp
))
1486 if (put_user(length
, argp
))
1493 if (put_user(u_index
, arg
))
1499 ** Send ATAPI_FORMAT_UNIT to the drive.
1501 ** Userland gives us the following structure:
1503 ** struct idefloppy_format_command {
1509 ** flags is a bitmask, currently, the only defined flag is:
1511 ** 0x01 - verify media after format.
1514 static int idefloppy_begin_format(ide_drive_t
*drive
, int __user
*arg
)
1521 if (get_user(blocks
, arg
) ||
1522 get_user(length
, arg
+1) ||
1523 get_user(flags
, arg
+2)) {
1527 /* Get the SFRP bit */
1528 (void) idefloppy_get_capability_page(drive
);
1529 idefloppy_create_format_unit_cmd(&pc
, blocks
, length
, flags
);
1530 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1538 ** Get ATAPI_FORMAT_UNIT progress indication.
1540 ** Userland gives a pointer to an int. The int is set to a progress
1541 ** indicator 0-65536, with 65536=100%.
1543 ** If the drive does not support format progress indication, we just check
1544 ** the dsc bit, and return either 0 or 65536.
1547 static int idefloppy_get_format_progress(ide_drive_t
*drive
, int __user
*arg
)
1549 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1551 int progress_indication
= 0x10000;
1554 idefloppy_create_request_sense_cmd(&pc
);
1555 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1559 if (floppy
->sense_key
== 2 &&
1561 floppy
->ascq
== 4) {
1562 progress_indication
= floppy
->progress_indication
;
1564 /* Else assume format_unit has finished, and we're
1567 unsigned long flags
;
1570 local_irq_save(flags
);
1571 stat
= drive
->hwif
->INB(IDE_STATUS_REG
);
1572 local_irq_restore(flags
);
1574 progress_indication
= ((stat
& SEEK_STAT
) == 0) ? 0 : 0x10000;
1576 if (put_user(progress_indication
, arg
))
1583 * Return the current floppy capacity.
1585 static sector_t
idefloppy_capacity (ide_drive_t
*drive
)
1587 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1588 unsigned long capacity
= floppy
->blocks
* floppy
->bs_factor
;
1594 * idefloppy_identify_device checks if we can support a drive,
1595 * based on the ATAPI IDENTIFY command results.
1597 static int idefloppy_identify_device (ide_drive_t
*drive
,struct hd_driveid
*id
)
1599 struct idefloppy_id_gcw gcw
;
1600 #if IDEFLOPPY_DEBUG_INFO
1602 #endif /* IDEFLOPPY_DEBUG_INFO */
1604 *((u16
*) &gcw
) = id
->config
;
1607 /* kludge for Apple PowerBook internal zip */
1608 if ((gcw
.device_type
== 5) &&
1609 !strstr(id
->model
, "CD-ROM") &&
1610 strstr(id
->model
, "ZIP"))
1611 gcw
.device_type
= 0;
1614 #if IDEFLOPPY_DEBUG_INFO
1615 printk(KERN_INFO
"Dumping ATAPI Identify Device floppy parameters\n");
1616 switch (gcw
.protocol
) {
1617 case 0: case 1: sprintf(buffer
, "ATA");break;
1618 case 2: sprintf(buffer
, "ATAPI");break;
1619 case 3: sprintf(buffer
, "Reserved (Unknown to ide-floppy)");break;
1621 printk(KERN_INFO
"Protocol Type: %s\n", buffer
);
1622 switch (gcw
.device_type
) {
1623 case 0: sprintf(buffer
, "Direct-access Device");break;
1624 case 1: sprintf(buffer
, "Streaming Tape Device");break;
1625 case 2: case 3: case 4: sprintf (buffer
, "Reserved");break;
1626 case 5: sprintf(buffer
, "CD-ROM Device");break;
1627 case 6: sprintf(buffer
, "Reserved");
1628 case 7: sprintf(buffer
, "Optical memory Device");break;
1629 case 0x1f: sprintf(buffer
, "Unknown or no Device type");break;
1630 default: sprintf(buffer
, "Reserved");
1632 printk(KERN_INFO
"Device Type: %x - %s\n", gcw
.device_type
, buffer
);
1633 printk(KERN_INFO
"Removable: %s\n",gcw
.removable
? "Yes":"No");
1634 switch (gcw
.drq_type
) {
1635 case 0: sprintf(buffer
, "Microprocessor DRQ");break;
1636 case 1: sprintf(buffer
, "Interrupt DRQ");break;
1637 case 2: sprintf(buffer
, "Accelerated DRQ");break;
1638 case 3: sprintf(buffer
, "Reserved");break;
1640 printk(KERN_INFO
"Command Packet DRQ Type: %s\n", buffer
);
1641 switch (gcw
.packet_size
) {
1642 case 0: sprintf(buffer
, "12 bytes");break;
1643 case 1: sprintf(buffer
, "16 bytes");break;
1644 default: sprintf(buffer
, "Reserved");break;
1646 printk(KERN_INFO
"Command Packet Size: %s\n", buffer
);
1647 #endif /* IDEFLOPPY_DEBUG_INFO */
1649 if (gcw
.protocol
!= 2)
1650 printk(KERN_ERR
"ide-floppy: Protocol is not ATAPI\n");
1651 else if (gcw
.device_type
!= 0)
1652 printk(KERN_ERR
"ide-floppy: Device type is not set to floppy\n");
1653 else if (!gcw
.removable
)
1654 printk(KERN_ERR
"ide-floppy: The removable flag is not set\n");
1655 else if (gcw
.drq_type
== 3) {
1656 printk(KERN_ERR
"ide-floppy: Sorry, DRQ type %d not supported\n", gcw
.drq_type
);
1657 } else if (gcw
.packet_size
!= 0) {
1658 printk(KERN_ERR
"ide-floppy: Packet size is not 12 bytes long\n");
1664 #ifdef CONFIG_IDE_PROC_FS
1665 static void idefloppy_add_settings(ide_drive_t
*drive
)
1667 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1670 * drive setting name read/write data type min max mul_factor div_factor data pointer set function
1672 ide_add_setting(drive
, "bios_cyl", SETTING_RW
, TYPE_INT
, 0, 1023, 1, 1, &drive
->bios_cyl
, NULL
);
1673 ide_add_setting(drive
, "bios_head", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1, &drive
->bios_head
, NULL
);
1674 ide_add_setting(drive
, "bios_sect", SETTING_RW
, TYPE_BYTE
, 0, 63, 1, 1, &drive
->bios_sect
, NULL
);
1675 ide_add_setting(drive
, "ticks", SETTING_RW
, TYPE_BYTE
, 0, 255, 1, 1, &floppy
->ticks
, NULL
);
1678 static inline void idefloppy_add_settings(ide_drive_t
*drive
) { ; }
1682 * Driver initialization.
1684 static void idefloppy_setup (ide_drive_t
*drive
, idefloppy_floppy_t
*floppy
)
1686 struct idefloppy_id_gcw gcw
;
1688 *((u16
*) &gcw
) = drive
->id
->config
;
1689 floppy
->pc
= floppy
->pc_stack
;
1690 if (gcw
.drq_type
== 1)
1691 set_bit(IDEFLOPPY_DRQ_INTERRUPT
, &floppy
->flags
);
1693 * We used to check revisions here. At this point however
1694 * I'm giving up. Just assume they are all broken, its easier.
1696 * The actual reason for the workarounds was likely
1697 * a driver bug after all rather than a firmware bug,
1698 * and the workaround below used to hide it. It should
1699 * be fixed as of version 1.9, but to be on the safe side
1700 * we'll leave the limitation below for the 2.2.x tree.
1703 if (!strncmp(drive
->id
->model
, "IOMEGA ZIP 100 ATAPI", 20)) {
1704 set_bit(IDEFLOPPY_ZIP_DRIVE
, &floppy
->flags
);
1705 /* This value will be visible in the /proc/ide/hdx/settings */
1706 floppy
->ticks
= IDEFLOPPY_TICKS_DELAY
;
1707 blk_queue_max_sectors(drive
->queue
, 64);
1711 * Guess what? The IOMEGA Clik! drive also needs the
1712 * above fix. It makes nasty clicking noises without
1713 * it, so please don't remove this.
1715 if (strncmp(drive
->id
->model
, "IOMEGA Clik!", 11) == 0) {
1716 blk_queue_max_sectors(drive
->queue
, 64);
1717 set_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
);
1721 (void) idefloppy_get_capacity(drive
);
1722 idefloppy_add_settings(drive
);
1725 static void ide_floppy_remove(ide_drive_t
*drive
)
1727 idefloppy_floppy_t
*floppy
= drive
->driver_data
;
1728 struct gendisk
*g
= floppy
->disk
;
1730 ide_proc_unregister_driver(drive
, floppy
->driver
);
1734 ide_floppy_put(floppy
);
1737 static void ide_floppy_release(struct kref
*kref
)
1739 struct ide_floppy_obj
*floppy
= to_ide_floppy(kref
);
1740 ide_drive_t
*drive
= floppy
->drive
;
1741 struct gendisk
*g
= floppy
->disk
;
1743 drive
->driver_data
= NULL
;
1744 g
->private_data
= NULL
;
1749 #ifdef CONFIG_IDE_PROC_FS
1750 static int proc_idefloppy_read_capacity
1751 (char *page
, char **start
, off_t off
, int count
, int *eof
, void *data
)
1753 ide_drive_t
*drive
= (ide_drive_t
*)data
;
1756 len
= sprintf(page
,"%llu\n", (long long)idefloppy_capacity(drive
));
1757 PROC_IDE_READ_RETURN(page
,start
,off
,count
,eof
,len
);
1760 static ide_proc_entry_t idefloppy_proc
[] = {
1761 { "capacity", S_IFREG
|S_IRUGO
, proc_idefloppy_read_capacity
, NULL
},
1762 { "geometry", S_IFREG
|S_IRUGO
, proc_ide_read_geometry
, NULL
},
1763 { NULL
, 0, NULL
, NULL
}
1765 #endif /* CONFIG_IDE_PROC_FS */
1767 static int ide_floppy_probe(ide_drive_t
*);
1769 static ide_driver_t idefloppy_driver
= {
1771 .owner
= THIS_MODULE
,
1772 .name
= "ide-floppy",
1773 .bus
= &ide_bus_type
,
1775 .probe
= ide_floppy_probe
,
1776 .remove
= ide_floppy_remove
,
1777 .version
= IDEFLOPPY_VERSION
,
1778 .media
= ide_floppy
,
1779 .supports_dsc_overlap
= 0,
1780 .do_request
= idefloppy_do_request
,
1781 .end_request
= idefloppy_do_end_request
,
1782 .error
= __ide_error
,
1783 .abort
= __ide_abort
,
1784 #ifdef CONFIG_IDE_PROC_FS
1785 .proc
= idefloppy_proc
,
1789 static int idefloppy_open(struct inode
*inode
, struct file
*filp
)
1791 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1792 struct ide_floppy_obj
*floppy
;
1797 debug_log(KERN_INFO
"Reached idefloppy_open\n");
1799 if (!(floppy
= ide_floppy_get(disk
)))
1802 drive
= floppy
->drive
;
1806 if (floppy
->openers
== 1) {
1807 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
);
1810 idefloppy_create_test_unit_ready_cmd(&pc
);
1811 if (idefloppy_queue_pc_tail(drive
, &pc
)) {
1812 idefloppy_create_start_stop_cmd(&pc
, 1);
1813 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1816 if (idefloppy_get_capacity (drive
)
1817 && (filp
->f_flags
& O_NDELAY
) == 0
1819 ** Allow O_NDELAY to open a drive without a disk, or with
1820 ** an unreadable disk, so that we can get the format
1821 ** capacity of the drive or begin the format - Sam
1825 goto out_put_floppy
;
1828 if (floppy
->wp
&& (filp
->f_mode
& 2)) {
1830 goto out_put_floppy
;
1832 set_bit(IDEFLOPPY_MEDIA_CHANGED
, &floppy
->flags
);
1833 /* IOMEGA Clik! drives do not support lock/unlock commands */
1834 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
)) {
1835 idefloppy_create_prevent_cmd(&pc
, 1);
1836 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1838 check_disk_change(inode
->i_bdev
);
1839 } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
)) {
1841 goto out_put_floppy
;
1847 ide_floppy_put(floppy
);
1851 static int idefloppy_release(struct inode
*inode
, struct file
*filp
)
1853 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1854 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1855 ide_drive_t
*drive
= floppy
->drive
;
1858 debug_log(KERN_INFO
"Reached idefloppy_release\n");
1860 if (floppy
->openers
== 1) {
1861 /* IOMEGA Clik! drives do not support lock/unlock commands */
1862 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
)) {
1863 idefloppy_create_prevent_cmd(&pc
, 0);
1864 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1867 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
);
1872 ide_floppy_put(floppy
);
1877 static int idefloppy_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1879 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1880 ide_drive_t
*drive
= floppy
->drive
;
1882 geo
->heads
= drive
->bios_head
;
1883 geo
->sectors
= drive
->bios_sect
;
1884 geo
->cylinders
= (u16
)drive
->bios_cyl
; /* truncate */
1888 static int idefloppy_ioctl(struct inode
*inode
, struct file
*file
,
1889 unsigned int cmd
, unsigned long arg
)
1891 struct block_device
*bdev
= inode
->i_bdev
;
1892 struct ide_floppy_obj
*floppy
= ide_floppy_g(bdev
->bd_disk
);
1893 ide_drive_t
*drive
= floppy
->drive
;
1894 void __user
*argp
= (void __user
*)arg
;
1896 int prevent
= (arg
) ? 1 : 0;
1903 case CDROM_LOCKDOOR
:
1904 if (floppy
->openers
> 1)
1907 /* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */
1908 if (!test_bit(IDEFLOPPY_CLIK_DRIVE
, &floppy
->flags
)) {
1909 idefloppy_create_prevent_cmd(&pc
, prevent
);
1910 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1912 if (cmd
== CDROMEJECT
) {
1913 idefloppy_create_start_stop_cmd(&pc
, 2);
1914 (void) idefloppy_queue_pc_tail(drive
, &pc
);
1917 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED
:
1919 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY
:
1920 return idefloppy_get_format_capacities(drive
, argp
);
1921 case IDEFLOPPY_IOCTL_FORMAT_START
:
1923 if (!(file
->f_mode
& 2))
1926 if (floppy
->openers
> 1) {
1927 /* Don't format if someone is using the disk */
1929 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
,
1934 set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
);
1936 err
= idefloppy_begin_format(drive
, argp
);
1938 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS
, &floppy
->flags
);
1941 ** Note, the bit will be cleared when the device is
1942 ** closed. This is the cleanest way to handle the
1943 ** situation where the drive does not support
1944 ** format progress reporting.
1946 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS
:
1947 return idefloppy_get_format_progress(drive
, argp
);
1951 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1952 * and CDROM_SEND_PACKET (legacy) ioctls
1954 if (cmd
!= CDROM_SEND_PACKET
&& cmd
!= SCSI_IOCTL_SEND_COMMAND
)
1955 err
= scsi_cmd_ioctl(file
, bdev
->bd_disk
->queue
,
1956 bdev
->bd_disk
, cmd
, argp
);
1961 err
= generic_ide_ioctl(drive
, file
, bdev
, cmd
, arg
);
1966 static int idefloppy_media_changed(struct gendisk
*disk
)
1968 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1969 ide_drive_t
*drive
= floppy
->drive
;
1971 /* do not scan partitions twice if this is a removable device */
1972 if (drive
->attach
) {
1976 return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED
, &floppy
->flags
);
1979 static int idefloppy_revalidate_disk(struct gendisk
*disk
)
1981 struct ide_floppy_obj
*floppy
= ide_floppy_g(disk
);
1982 set_capacity(disk
, idefloppy_capacity(floppy
->drive
));
1986 static struct block_device_operations idefloppy_ops
= {
1987 .owner
= THIS_MODULE
,
1988 .open
= idefloppy_open
,
1989 .release
= idefloppy_release
,
1990 .ioctl
= idefloppy_ioctl
,
1991 .getgeo
= idefloppy_getgeo
,
1992 .media_changed
= idefloppy_media_changed
,
1993 .revalidate_disk
= idefloppy_revalidate_disk
1996 static int ide_floppy_probe(ide_drive_t
*drive
)
1998 idefloppy_floppy_t
*floppy
;
2001 if (!strstr("ide-floppy", drive
->driver_req
))
2003 if (!drive
->present
)
2005 if (drive
->media
!= ide_floppy
)
2007 if (!idefloppy_identify_device (drive
, drive
->id
)) {
2008 printk (KERN_ERR
"ide-floppy: %s: not supported by this version of ide-floppy\n", drive
->name
);
2012 printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive
->name
);
2015 if ((floppy
= kzalloc(sizeof (idefloppy_floppy_t
), GFP_KERNEL
)) == NULL
) {
2016 printk (KERN_ERR
"ide-floppy: %s: Can't allocate a floppy structure\n", drive
->name
);
2020 g
= alloc_disk(1 << PARTN_BITS
);
2022 goto out_free_floppy
;
2024 ide_init_disk(g
, drive
);
2026 ide_proc_register_driver(drive
, &idefloppy_driver
);
2028 kref_init(&floppy
->kref
);
2030 floppy
->drive
= drive
;
2031 floppy
->driver
= &idefloppy_driver
;
2034 g
->private_data
= &floppy
->driver
;
2036 drive
->driver_data
= floppy
;
2038 idefloppy_setup (drive
, floppy
);
2040 g
->minors
= 1 << PARTN_BITS
;
2041 g
->driverfs_dev
= &drive
->gendev
;
2042 g
->flags
= drive
->removable
? GENHD_FL_REMOVABLE
: 0;
2043 g
->fops
= &idefloppy_ops
;
2054 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
2056 static void __exit
idefloppy_exit (void)
2058 driver_unregister(&idefloppy_driver
.gen_driver
);
2061 static int __init
idefloppy_init(void)
2063 printk("ide-floppy driver " IDEFLOPPY_VERSION
"\n");
2064 return driver_register(&idefloppy_driver
.gen_driver
);
2067 MODULE_ALIAS("ide:*m-floppy*");
2068 module_init(idefloppy_init
);
2069 module_exit(idefloppy_exit
);
2070 MODULE_LICENSE("GPL");