1 /*
2 * linux/drivers/ide/ide-floppy.c Version 0.99 Feb 24 2002
3 *
4 * Copyright (C) 1996 - 1999 Gadi Oxman <gadio@netvision.net.il>
5 * Copyright (C) 2000 - 2002 Paul Bristow <paul@paulbristow.net>
6 */
7
8 /*
9 * IDE ATAPI floppy driver.
10 *
11 * The driver currently doesn't have any fancy features, just the bare
12 * minimum read/write support.
13 *
14 * This driver supports the following IDE floppy drives:
15 *
16 * LS-120/240 SuperDisk
17 * Iomega Zip 100/250
18 * Iomega PC Card Clik!/PocketZip
19 *
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.
22 *
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
81 */
82
83 #define IDEFLOPPY_VERSION "0.99.newide"
84
85 #include <linux/config.h>
86 #include <linux/module.h>
87 #include <linux/types.h>
88 #include <linux/string.h>
89 #include <linux/kernel.h>
90 #include <linux/delay.h>
91 #include <linux/timer.h>
92 #include <linux/mm.h>
93 #include <linux/interrupt.h>
94 #include <linux/major.h>
95 #include <linux/errno.h>
96 #include <linux/genhd.h>
97 #include <linux/slab.h>
98 #include <linux/cdrom.h>
99 #include <linux/ide.h>
100
101 #include <asm/byteorder.h>
102 #include <asm/irq.h>
103 #include <asm/uaccess.h>
104 #include <asm/io.h>
105 #include <asm/unaligned.h>
106 #include <asm/bitops.h>
107
108 /*
109 * The following are used to debug the driver.
110 */
111 #define IDEFLOPPY_DEBUG_LOG 0
112 #define IDEFLOPPY_DEBUG_INFO 0
113 #define IDEFLOPPY_DEBUG_BUGS 1
114
115 /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
116 #define IDEFLOPPY_DEBUG( fmt, args... )
117
118
119 /*
120 * Some drives require a longer irq timeout.
121 */
122 #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
123
124 /*
125 * After each failed packet command we issue a request sense command
126 * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times.
127 */
128 #define IDEFLOPPY_MAX_PC_RETRIES 3
129
130 /*
131 * With each packet command, we allocate a buffer of
132 * IDEFLOPPY_PC_BUFFER_SIZE bytes.
133 */
134 #define IDEFLOPPY_PC_BUFFER_SIZE 256
135
136 /*
137 * In various places in the driver, we need to allocate storage
138 * for packet commands and requests, which will remain valid while
139 * we leave the driver to wait for an interrupt or a timeout event.
140 */
141 #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
142
143 /*
144 * Our view of a packet command.
145 */
146 typedef struct idefloppy_packet_command_s {
147 u8 c[12]; /* Actual packet bytes */
148 int retries; /* On each retry, we increment retries */
149 int error; /* Error code */
150 int request_transfer; /* Bytes to transfer */
151 int actually_transferred; /* Bytes actually transferred */
152 int buffer_size; /* Size of our data buffer */
153 char *b_data; /* Pointer which runs on the buffers */
154 int b_count; /* Missing/Available data on the current buffer */
155 struct request *rq; /* The corresponding request */
156 u8 *buffer; /* Data buffer */
157 u8 *current_position; /* Pointer into the above buffer */
158 void (*callback) (ide_drive_t *); /* Called when this packet command is completed */
159 u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */
160 unsigned long flags; /* Status/Action bit flags: long for set_bit */
161 } idefloppy_pc_t;
162
163 /*
164 * Packet command flag bits.
165 */
166 #define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */
167 #define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */
168 #define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */
169 #define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */
170 #define PC_WRITING 5 /* Data direction */
171
172 #define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */
173
174 /*
175 * Removable Block Access Capabilities Page
176 */
177 typedef struct {
178 #if defined(__LITTLE_ENDIAN_BITFIELD)
179 unsigned page_code :6; /* Page code - Should be 0x1b */
180 unsigned reserved1_6 :1; /* Reserved */
181 unsigned ps :1; /* Should be 0 */
182 #elif defined(__BIG_ENDIAN_BITFIELD)
183 unsigned ps :1; /* Should be 0 */
184 unsigned reserved1_6 :1; /* Reserved */
185 unsigned page_code :6; /* Page code - Should be 0x1b */
186 #else
187 #error "Bitfield endianness not defined! Check your byteorder.h"
188 #endif
189 u8 page_length; /* Page Length - Should be 0xa */
190 #if defined(__LITTLE_ENDIAN_BITFIELD)
191 unsigned reserved2 :6;
192 unsigned srfp :1; /* Supports reporting progress of format */
193 unsigned sflp :1; /* System floppy type device */
194 unsigned tlun :3; /* Total logical units supported by the device */
195 unsigned reserved3 :3;
196 unsigned sml :1; /* Single / Multiple lun supported */
197 unsigned ncd :1; /* Non cd optical device */
198 #elif defined(__BIG_ENDIAN_BITFIELD)
199 unsigned sflp :1; /* System floppy type device */
200 unsigned srfp :1; /* Supports reporting progress of format */
201 unsigned reserved2 :6;
202 unsigned ncd :1; /* Non cd optical device */
203 unsigned sml :1; /* Single / Multiple lun supported */
204 unsigned reserved3 :3;
205 unsigned tlun :3; /* Total logical units supported by the device */
206 #else
207 #error "Bitfield endianness not defined! Check your byteorder.h"
208 #endif
209 u8 reserved[8];
210 } idefloppy_capabilities_page_t;
211
212 /*
213 * Flexible disk page.
214 */
215 typedef struct {
216 #if defined(__LITTLE_ENDIAN_BITFIELD)
217 unsigned page_code :6; /* Page code - Should be 0x5 */
218 unsigned reserved1_6 :1; /* Reserved */
219 unsigned ps :1; /* The device is capable of saving the page */
220 #elif defined(__BIG_ENDIAN_BITFIELD)
221 unsigned ps :1; /* The device is capable of saving the page */
222 unsigned reserved1_6 :1; /* Reserved */
223 unsigned page_code :6; /* Page code - Should be 0x5 */
224 #else
225 #error "Bitfield endianness not defined! Check your byteorder.h"
226 #endif
227 u8 page_length; /* Page Length - Should be 0x1e */
228 u16 transfer_rate; /* In kilobits per second */
229 u8 heads, sectors; /* Number of heads, Number of sectors per track */
230 u16 sector_size; /* Byes per sector */
231 u16 cyls; /* Number of cylinders */
232 u8 reserved10[10];
233 u8 motor_delay; /* Motor off delay */
234 u8 reserved21[7];
235 u16 rpm; /* Rotations per minute */
236 u8 reserved30[2];
237 } idefloppy_flexible_disk_page_t;
238
239 /*
240 * Format capacity
241 */
242 typedef struct {
243 u8 reserved[3];
244 u8 length; /* Length of the following descriptors in bytes */
245 } idefloppy_capacity_header_t;
246
247 typedef struct {
248 u32 blocks; /* Number of blocks */
249 #if defined(__LITTLE_ENDIAN_BITFIELD)
250 unsigned dc :2; /* Descriptor Code */
251 unsigned reserved :6;
252 #elif defined(__BIG_ENDIAN_BITFIELD)
253 unsigned reserved :6;
254 unsigned dc :2; /* Descriptor Code */
255 #else
256 #error "Bitfield endianness not defined! Check your byteorder.h"
257 #endif
258 u8 length_msb; /* Block Length (MSB)*/
259 u16 length; /* Block Length */
260 } idefloppy_capacity_descriptor_t;
261
262 #define CAPACITY_INVALID 0x00
263 #define CAPACITY_UNFORMATTED 0x01
264 #define CAPACITY_CURRENT 0x02
265 #define CAPACITY_NO_CARTRIDGE 0x03
266
267 /*
268 * Most of our global data which we need to save even as we leave the
269 * driver due to an interrupt or a timer event is stored in a variable
270 * of type idefloppy_floppy_t, defined below.
271 */
272 typedef struct {
273 ide_drive_t *drive;
274
275 /* Current packet command */
276 idefloppy_pc_t *pc;
277 /* Last failed packet command */
278 idefloppy_pc_t *failed_pc;
279 /* Packet command stack */
280 idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK];
281 /* Next free packet command storage space */
282 int pc_stack_index;
283 struct request rq_stack[IDEFLOPPY_PC_STACK];
284 /* We implement a circular array */
285 int rq_stack_index;
286
287 /*
288 * Last error information
289 */
290 u8 sense_key, asc, ascq;
291 /* delay this long before sending packet command */
292 u8 ticks;
293 int progress_indication;
294
295 /*
296 * Device information
297 */
298 /* Current format */
299 int blocks, block_size, bs_factor;
300 /* Last format capacity */
301 idefloppy_capacity_descriptor_t capacity;
302 /* Copy of the flexible disk page */
303 idefloppy_flexible_disk_page_t flexible_disk_page;
304 /* Write protect */
305 int wp;
306 /* Supports format progress report */
307 int srfp;
308 /* Status/Action flags */
309 unsigned long flags;
310 } idefloppy_floppy_t;
311
312 #define IDEFLOPPY_TICKS_DELAY 3 /* default delay for ZIP 100 */
313
314 /*
315 * Floppy flag bits values.
316 */
317 #define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */
318 #define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */
319 #define IDEFLOPPY_USE_READ12 2 /* Use READ12/WRITE12 or READ10/WRITE10 */
320 #define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */
321 #define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */
322 #define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */
323
324 /*
325 * ATAPI floppy drive packet commands
326 */
327 #define IDEFLOPPY_FORMAT_UNIT_CMD 0x04
328 #define IDEFLOPPY_INQUIRY_CMD 0x12
329 #define IDEFLOPPY_MODE_SELECT_CMD 0x55
330 #define IDEFLOPPY_MODE_SENSE_CMD 0x5a
331 #define IDEFLOPPY_READ10_CMD 0x28
332 #define IDEFLOPPY_READ12_CMD 0xa8
333 #define IDEFLOPPY_READ_CAPACITY_CMD 0x23
334 #define IDEFLOPPY_REQUEST_SENSE_CMD 0x03
335 #define IDEFLOPPY_PREVENT_REMOVAL_CMD 0x1e
336 #define IDEFLOPPY_SEEK_CMD 0x2b
337 #define IDEFLOPPY_START_STOP_CMD 0x1b
338 #define IDEFLOPPY_TEST_UNIT_READY_CMD 0x00
339 #define IDEFLOPPY_VERIFY_CMD 0x2f
340 #define IDEFLOPPY_WRITE10_CMD 0x2a
341 #define IDEFLOPPY_WRITE12_CMD 0xaa
342 #define IDEFLOPPY_WRITE_VERIFY_CMD 0x2e
343
344 /*
345 * Defines for the mode sense command
346 */
347 #define MODE_SENSE_CURRENT 0x00
348 #define MODE_SENSE_CHANGEABLE 0x01
349 #define MODE_SENSE_DEFAULT 0x02
350 #define MODE_SENSE_SAVED 0x03
351
352 /*
353 * IOCTLs used in low-level formatting.
354 */
355
356 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
357 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
358 #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
359 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
360
361 /*
362 * Special requests for our block device strategy routine.
363 */
364 #define IDEFLOPPY_FIRST_RQ 90
365
366 /*
367 * IDEFLOPPY_PC_RQ is used to queue a packet command in the request queue.
368 */
369 #define IDEFLOPPY_PC_RQ 90
370
371 #define IDEFLOPPY_LAST_RQ 90
372
373 /*
374 * A macro which can be used to check if a given request command
375 * originated in the driver or in the buffer cache layer.
376 */
377 #define IDEFLOPPY_RQ_CMD(cmd) ((cmd >= IDEFLOPPY_FIRST_RQ) && (cmd <= IDEFLOPPY_LAST_RQ))
378
379 /*
380 * Error codes which are returned in rq->errors to the higher part
381 * of the driver.
382 */
383 #define IDEFLOPPY_ERROR_GENERAL 101
384
385 /*
386 * The following is used to format the general configuration word of
387 * the ATAPI IDENTIFY DEVICE command.
388 */
389 struct idefloppy_id_gcw {
390 #if defined(__LITTLE_ENDIAN_BITFIELD)
391 unsigned packet_size :2; /* Packet Size */
392 unsigned reserved234 :3; /* Reserved */
393 unsigned drq_type :2; /* Command packet DRQ type */
394 unsigned removable :1; /* Removable media */
395 unsigned device_type :5; /* Device type */
396 unsigned reserved13 :1; /* Reserved */
397 unsigned protocol :2; /* Protocol type */
398 #elif defined(__BIG_ENDIAN_BITFIELD)
399 unsigned protocol :2; /* Protocol type */
400 unsigned reserved13 :1; /* Reserved */
401 unsigned device_type :5; /* Device type */
402 unsigned removable :1; /* Removable media */
403 unsigned drq_type :2; /* Command packet DRQ type */
404 unsigned reserved234 :3; /* Reserved */
405 unsigned packet_size :2; /* Packet Size */
406 #else
407 #error "Bitfield endianness not defined! Check your byteorder.h"
408 #endif
409 };
410
411 /*
412 * INQUIRY packet command - Data Format
413 */
414 typedef struct {
415 #if defined(__LITTLE_ENDIAN_BITFIELD)
416 unsigned device_type :5; /* Peripheral Device Type */
417 unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
418 unsigned reserved1_6t0 :7; /* Reserved */
419 unsigned rmb :1; /* Removable Medium Bit */
420 unsigned ansi_version :3; /* ANSI Version */
421 unsigned ecma_version :3; /* ECMA Version */
422 unsigned iso_version :2; /* ISO Version */
423 unsigned response_format :4; /* Response Data Format */
424 unsigned reserved3_45 :2; /* Reserved */
425 unsigned reserved3_6 :1; /* TrmIOP - Reserved */
426 unsigned reserved3_7 :1; /* AENC - Reserved */
427 #elif defined(__BIG_ENDIAN_BITFIELD)
428 unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
429 unsigned device_type :5; /* Peripheral Device Type */
430 unsigned rmb :1; /* Removable Medium Bit */
431 unsigned reserved1_6t0 :7; /* Reserved */
432 unsigned iso_version :2; /* ISO Version */
433 unsigned ecma_version :3; /* ECMA Version */
434 unsigned ansi_version :3; /* ANSI Version */
435 unsigned reserved3_7 :1; /* AENC - Reserved */
436 unsigned reserved3_6 :1; /* TrmIOP - Reserved */
437 unsigned reserved3_45 :2; /* Reserved */
438 unsigned response_format :4; /* Response Data Format */
439 #else
440 #error "Bitfield endianness not defined! Check your byteorder.h"
441 #endif
442 u8 additional_length; /* Additional Length (total_length-4) */
443 u8 rsv5, rsv6, rsv7; /* Reserved */
444 u8 vendor_id[8]; /* Vendor Identification */
445 u8 product_id[16]; /* Product Identification */
446 u8 revision_level[4]; /* Revision Level */
447 u8 vendor_specific[20]; /* Vendor Specific - Optional */
448 u8 reserved56t95[40]; /* Reserved - Optional */
449 /* Additional information may be returned */
450 } idefloppy_inquiry_result_t;
451
452 /*
453 * REQUEST SENSE packet command result - Data Format.
454 */
455 typedef struct {
456 #if defined(__LITTLE_ENDIAN_BITFIELD)
457 unsigned error_code :7; /* Current error (0x70) */
458 unsigned valid :1; /* The information field conforms to SFF-8070i */
459 u8 reserved1 :8; /* Reserved */
460 unsigned sense_key :4; /* Sense Key */
461 unsigned reserved2_4 :1; /* Reserved */
462 unsigned ili :1; /* Incorrect Length Indicator */
463 unsigned reserved2_67 :2;
464 #elif defined(__BIG_ENDIAN_BITFIELD)
465 unsigned valid :1; /* The information field conforms to SFF-8070i */
466 unsigned error_code :7; /* Current error (0x70) */
467 u8 reserved1 :8; /* Reserved */
468 unsigned reserved2_67 :2;
469 unsigned ili :1; /* Incorrect Length Indicator */
470 unsigned reserved2_4 :1; /* Reserved */
471 unsigned sense_key :4; /* Sense Key */
472 #else
473 #error "Bitfield endianness not defined! Check your byteorder.h"
474 #endif
475 u32 information __attribute__ ((packed));
476 u8 asl; /* Additional sense length (n-7) */
477 u32 command_specific; /* Additional command specific information */
478 u8 asc; /* Additional Sense Code */
479 u8 ascq; /* Additional Sense Code Qualifier */
480 u8 replaceable_unit_code; /* Field Replaceable Unit Code */
481 u8 sksv[3];
482 u8 pad[2]; /* Padding to 20 bytes */
483 } idefloppy_request_sense_result_t;
484
485 /*
486 * Pages of the SELECT SENSE / MODE SENSE packet commands.
487 */
488 #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
489 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
490
491 /*
492 * Mode Parameter Header for the MODE SENSE packet command
493 */
494 typedef struct {
495 u16 mode_data_length; /* Length of the following data transfer */
496 u8 medium_type; /* Medium Type */
497 #if defined(__LITTLE_ENDIAN_BITFIELD)
498 unsigned reserved3 :7;
499 unsigned wp :1; /* Write protect */
500 #elif defined(__BIG_ENDIAN_BITFIELD)
501 unsigned wp :1; /* Write protect */
502 unsigned reserved3 :7;
503 #else
504 #error "Bitfield endianness not defined! Check your byteorder.h"
505 #endif
506 u8 reserved[4];
507 } idefloppy_mode_parameter_header_t;
508
509 #define IDEFLOPPY_MIN(a,b) ((a)<(b) ? (a):(b))
510 #define IDEFLOPPY_MAX(a,b) ((a)>(b) ? (a):(b))
511
512 /*
513 * Too bad. The drive wants to send us data which we are not ready to accept.
514 * Just throw it away.
515 */
idefloppy_discard_data(ide_drive_t * drive,unsigned int bcount)516 static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount)
517 {
518 while (bcount--)
519 (void) HWIF(drive)->INB(IDE_DATA_REG);
520 }
521
522 #if IDEFLOPPY_DEBUG_BUGS
idefloppy_write_zeros(ide_drive_t * drive,unsigned int bcount)523 static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount)
524 {
525 while (bcount--)
526 HWIF(drive)->OUTB(0, IDE_DATA_REG);
527 }
528 #endif /* IDEFLOPPY_DEBUG_BUGS */
529
530
idefloppy_end_request(ide_drive_t * drive,int uptodate)531 static int idefloppy_end_request (ide_drive_t *drive, int uptodate)
532 {
533 struct request *rq;
534 unsigned long flags;
535 int ret = 1;
536
537 spin_lock_irqsave(&io_request_lock, flags);
538 rq = HWGROUP(drive)->rq;
539
540 /*
541 * decide whether to reenable DMA -- 3 is a random magic for now,
542 * if we DMA timeout more than 3 times, just stay in PIO
543 */
544 if (drive->state == DMA_PIO_RETRY && drive->retry_pio <= 3) {
545 drive->state = 0;
546 HWGROUP(drive)->hwif->ide_dma_on(drive);
547 }
548
549 if (!end_that_request_first(rq, uptodate, drive->name)) {
550 add_blkdev_randomness(MAJOR(rq->rq_dev));
551 blkdev_dequeue_request(rq);
552 HWGROUP(drive)->rq = NULL;
553 end_that_request_last(rq);
554 ret = 0;
555 }
556 spin_unlock_irqrestore(&io_request_lock, flags);
557 return ret;
558 }
559
560 /*
561 * idefloppy_do_end_request is used to finish servicing a request.
562 *
563 * For read/write requests, we will call ide_end_request to pass to the
564 * next buffer.
565 */
idefloppy_do_end_request(ide_drive_t * drive,int uptodate)566 static int idefloppy_do_end_request (ide_drive_t *drive, int uptodate)
567 {
568 idefloppy_floppy_t *floppy = drive->driver_data;
569 struct request *rq = HWGROUP(drive)->rq;
570 int error;
571
572 #if IDEFLOPPY_DEBUG_LOG
573 printk(KERN_INFO "Reached idefloppy_end_request\n");
574 #endif /* IDEFLOPPY_DEBUG_LOG */
575
576 switch (uptodate) {
577 case 0: error = IDEFLOPPY_ERROR_GENERAL; break;
578 case 1: error = 0; break;
579 default: error = uptodate;
580 }
581 if (error)
582 floppy->failed_pc = NULL;
583 /* Why does this happen? */
584 if (!rq)
585 return 0;
586 if (!IDEFLOPPY_RQ_CMD(rq->cmd)) {
587 /* our real local end request function */
588 idefloppy_end_request(drive, uptodate);
589 return 0;
590 }
591 rq->errors = error;
592 /* fixme: need to move this local also */
593 ide_end_drive_cmd(drive, 0, 0);
594 return 0;
595 }
596
idefloppy_input_buffers(ide_drive_t * drive,idefloppy_pc_t * pc,unsigned int bcount)597 static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount)
598 {
599 struct request *rq = pc->rq;
600 struct buffer_head *bh = rq->bh;
601 int count;
602
603 while (bcount) {
604 if (pc->b_count == bh->b_size) {
605 rq->sector += rq->current_nr_sectors;
606 rq->nr_sectors -= rq->current_nr_sectors;
607 idefloppy_do_end_request(drive, 1);
608 if ((bh = rq->bh) != NULL)
609 pc->b_count = 0;
610 }
611 if (bh == NULL) {
612 printk(KERN_ERR "%s: bh == NULL in "
613 "idefloppy_input_buffers, bcount == %d\n",
614 drive->name, bcount);
615 idefloppy_discard_data(drive, bcount);
616 return;
617 }
618 count = IDEFLOPPY_MIN(bh->b_size - pc->b_count, bcount);
619 HWIF(drive)->atapi_input_bytes(drive, bh->b_data + pc->b_count, count);
620 bcount -= count;
621 pc->b_count += count;
622 }
623 }
624
idefloppy_output_buffers(ide_drive_t * drive,idefloppy_pc_t * pc,unsigned int bcount)625 static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount)
626 {
627 struct request *rq = pc->rq;
628 struct buffer_head *bh = rq->bh;
629 int count;
630
631 while (bcount) {
632 if (!pc->b_count) {
633 rq->sector += rq->current_nr_sectors;
634 rq->nr_sectors -= rq->current_nr_sectors;
635 idefloppy_do_end_request(drive, 1);
636 if ((bh = rq->bh) != NULL) {
637 pc->b_data = bh->b_data;
638 pc->b_count = bh->b_size;
639 }
640 }
641 if (bh == NULL) {
642 printk(KERN_ERR "%s: bh == NULL in "
643 "idefloppy_output_buffers, bcount == %d\n",
644 drive->name, bcount);
645 idefloppy_write_zeros (drive, bcount);
646 return;
647 }
648 count = IDEFLOPPY_MIN(pc->b_count, bcount);
649 HWIF(drive)->atapi_output_bytes(drive, pc->b_data, count);
650 bcount -= count;
651 pc->b_data += count;
652 pc->b_count -= count;
653 }
654 }
655
656 #ifdef CONFIG_BLK_DEV_IDEDMA
idefloppy_update_buffers(ide_drive_t * drive,idefloppy_pc_t * pc)657 static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc)
658 {
659 struct request *rq = pc->rq;
660 struct buffer_head *bh = rq->bh;
661
662 while ((bh = rq->bh) != NULL)
663 idefloppy_do_end_request(drive, 1);
664 }
665 #endif /* CONFIG_BLK_DEV_IDEDMA */
666
667 /*
668 * idefloppy_queue_pc_head generates a new packet command request in front
669 * of the request queue, before the current request, so that it will be
670 * processed immediately, on the next pass through the driver.
671 */
idefloppy_queue_pc_head(ide_drive_t * drive,idefloppy_pc_t * pc,struct request * rq)672 static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq)
673 {
674 ide_init_drive_cmd(rq);
675 rq->buffer = (char *)pc;
676 rq->cmd = IDEFLOPPY_PC_RQ;
677 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
678 }
679
idefloppy_next_pc_storage(ide_drive_t * drive)680 static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive)
681 {
682 idefloppy_floppy_t *floppy = drive->driver_data;
683
684 if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK)
685 floppy->pc_stack_index=0;
686 return (&floppy->pc_stack[floppy->pc_stack_index++]);
687 }
688
idefloppy_next_rq_storage(ide_drive_t * drive)689 static struct request *idefloppy_next_rq_storage (ide_drive_t *drive)
690 {
691 idefloppy_floppy_t *floppy = drive->driver_data;
692
693 if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK)
694 floppy->rq_stack_index = 0;
695 return (&floppy->rq_stack[floppy->rq_stack_index++]);
696 }
697
698 /*
699 * idefloppy_analyze_error is called on each failed packet command retry
700 * to analyze the request sense.
701 */
idefloppy_analyze_error(ide_drive_t * drive,idefloppy_request_sense_result_t * result)702 static void idefloppy_analyze_error (ide_drive_t *drive,idefloppy_request_sense_result_t *result)
703 {
704 idefloppy_floppy_t *floppy = drive->driver_data;
705
706 floppy->sense_key = result->sense_key;
707 floppy->asc = result->asc;
708 floppy->ascq = result->ascq;
709 floppy->progress_indication = result->sksv[0] & 0x80 ?
710 (u16)get_unaligned((u16 *)(result->sksv+1)):0x10000;
711 #if IDEFLOPPY_DEBUG_LOG
712 if (floppy->failed_pc)
713 printk(KERN_INFO "ide-floppy: pc = %x, sense key = %x, "
714 "asc = %x, ascq = %x\n", floppy->failed_pc->c[0],
715 result->sense_key, result->asc, result->ascq);
716 else
717 printk(KERN_INFO "ide-floppy: sense key = %x, asc = %x, "
718 "ascq = %x\n", result->sense_key,
719 result->asc, result->ascq);
720 #endif /* IDEFLOPPY_DEBUG_LOG */
721 }
722
idefloppy_request_sense_callback(ide_drive_t * drive)723 static void idefloppy_request_sense_callback (ide_drive_t *drive)
724 {
725 idefloppy_floppy_t *floppy = drive->driver_data;
726
727 #if IDEFLOPPY_DEBUG_LOG
728 printk(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__);
729 #endif /* IDEFLOPPY_DEBUG_LOG */
730 if (!floppy->pc->error) {
731 idefloppy_analyze_error(drive,(idefloppy_request_sense_result_t *) floppy->pc->buffer);
732 idefloppy_do_end_request(drive, 1);
733 } else {
734 printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting request!\n");
735 idefloppy_do_end_request(drive, 0);
736 }
737 }
738
739 /*
740 * General packet command callback function.
741 */
idefloppy_pc_callback(ide_drive_t * drive)742 static void idefloppy_pc_callback (ide_drive_t *drive)
743 {
744 idefloppy_floppy_t *floppy = drive->driver_data;
745
746 #if IDEFLOPPY_DEBUG_LOG
747 printk (KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__);
748 #endif /* IDEFLOPPY_DEBUG_LOG */
749
750 idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1);
751 }
752
753 /*
754 * idefloppy_init_pc initializes a packet command.
755 */
idefloppy_init_pc(idefloppy_pc_t * pc)756 static void idefloppy_init_pc (idefloppy_pc_t *pc)
757 {
758 memset(pc->c, 0, 12);
759 pc->retries = 0;
760 pc->flags = 0;
761 pc->request_transfer = 0;
762 pc->buffer = pc->pc_buffer;
763 pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE;
764 pc->b_data = NULL;
765 pc->callback = &idefloppy_pc_callback;
766 }
767
idefloppy_create_request_sense_cmd(idefloppy_pc_t * pc)768 static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc)
769 {
770 idefloppy_init_pc(pc);
771 pc->c[0] = IDEFLOPPY_REQUEST_SENSE_CMD;
772 pc->c[4] = 255;
773 pc->request_transfer = 18;
774 pc->callback = &idefloppy_request_sense_callback;
775 }
776
777 /*
778 * idefloppy_retry_pc is called when an error was detected during the
779 * last packet command. We queue a request sense packet command in
780 * the head of the request list.
781 */
idefloppy_retry_pc(ide_drive_t * drive)782 static void idefloppy_retry_pc (ide_drive_t *drive)
783 {
784 idefloppy_pc_t *pc;
785 struct request *rq;
786 atapi_error_t error;
787
788 error.all = HWIF(drive)->INB(IDE_ERROR_REG);
789 pc = idefloppy_next_pc_storage(drive);
790 rq = idefloppy_next_rq_storage(drive);
791 idefloppy_create_request_sense_cmd(pc);
792 idefloppy_queue_pc_head(drive, pc, rq);
793 }
794
795 /*
796 * idefloppy_pc_intr is the usual interrupt handler which will be called
797 * during a packet command.
798 */
idefloppy_pc_intr(ide_drive_t * drive)799 static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive)
800 {
801 idefloppy_floppy_t *floppy = drive->driver_data;
802 atapi_status_t status;
803 atapi_bcount_t bcount;
804 atapi_ireason_t ireason;
805 idefloppy_pc_t *pc = floppy->pc;
806 struct request *rq = pc->rq;
807 unsigned int temp;
808
809 #if IDEFLOPPY_DEBUG_LOG
810 printk(KERN_INFO "ide-floppy: Reached %s interrupt handler\n",
811 __FUNCTION__);
812 #endif /* IDEFLOPPY_DEBUG_LOG */
813
814 #ifdef CONFIG_BLK_DEV_IDEDMA
815 if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
816 if (HWIF(drive)->ide_dma_end(drive)) {
817 set_bit(PC_DMA_ERROR, &pc->flags);
818 } else {
819 pc->actually_transferred = pc->request_transfer;
820 idefloppy_update_buffers(drive, pc);
821 }
822 #if IDEFLOPPY_DEBUG_LOG
823 printk (KERN_INFO "ide-floppy: DMA finished\n");
824 #endif /* IDEFLOPPY_DEBUG_LOG */
825 }
826 #endif /* CONFIG_BLK_DEV_IDEDMA */
827
828 /* Clear the interrupt */
829 status.all = HWIF(drive)->INB(IDE_STATUS_REG);
830
831 if (!status.b.drq) { /* No more interrupts */
832 #if IDEFLOPPY_DEBUG_LOG
833 printk(KERN_INFO "Packet command completed, %d bytes "
834 "transferred\n", pc->actually_transferred);
835 #endif /* IDEFLOPPY_DEBUG_LOG */
836 clear_bit(PC_DMA_IN_PROGRESS, &pc->flags);
837
838 local_irq_enable();
839
840 if (status.b.check || test_bit(PC_DMA_ERROR, &pc->flags)) {
841 /* Error detected */
842 #if IDEFLOPPY_DEBUG_LOG
843 printk(KERN_INFO "ide-floppy: %s: I/O error\n",
844 drive->name);
845 #endif /* IDEFLOPPY_DEBUG_LOG */
846 rq->errors++;
847 if (pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) {
848 printk(KERN_ERR "ide-floppy: I/O error in "
849 "request sense command\n");
850 return ide_do_reset(drive);
851 }
852 /* Retry operation */
853 idefloppy_retry_pc(drive);
854 /* queued, but not started */
855 return ide_stopped;
856 }
857 pc->error = 0;
858 if (floppy->failed_pc == pc)
859 floppy->failed_pc = NULL;
860 /* Command finished - Call the callback function */
861 pc->callback(drive);
862 return ide_stopped;
863 }
864 #ifdef CONFIG_BLK_DEV_IDEDMA
865 if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
866 printk(KERN_ERR "ide-floppy: The floppy wants to issue "
867 "more interrupts in DMA mode\n");
868 (void) HWIF(drive)->ide_dma_off(drive);
869 return ide_do_reset(drive);
870 }
871 #endif /* CONFIG_BLK_DEV_IDEDMA */
872 /* Get the number of bytes to transfer */
873 bcount.b.high = HWIF(drive)->INB(IDE_BCOUNTH_REG);
874 bcount.b.low = HWIF(drive)->INB(IDE_BCOUNTL_REG);
875 /* on this interrupt */
876 ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
877
878 if (ireason.b.cod) {
879 printk(KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n");
880 return ide_do_reset(drive);
881 }
882 if (ireason.b.io == test_bit(PC_WRITING, &pc->flags)) {
883 /* Hopefully, we will never get here */
884 printk(KERN_ERR "ide-floppy: We wanted to %s, ",
885 ireason.b.io ? "Write":"Read");
886 printk(KERN_ERR "but the floppy wants us to %s !\n",
887 ireason.b.io ? "Read":"Write");
888 return ide_do_reset(drive);
889 }
890 if (!test_bit(PC_WRITING, &pc->flags)) {
891 /* Reading - Check that we have enough space */
892 temp = pc->actually_transferred + bcount.all;
893 if (temp > pc->request_transfer) {
894 if (temp > pc->buffer_size) {
895 printk(KERN_ERR "ide-floppy: The floppy wants "
896 "to send us more data than expected "
897 "- discarding data\n");
898 idefloppy_discard_data(drive,bcount.all);
899 if (HWGROUP(drive)->handler != NULL)
900 BUG();
901 ide_set_handler(drive,
902 &idefloppy_pc_intr,
903 IDEFLOPPY_WAIT_CMD,
904 NULL);
905 return ide_started;
906 }
907 #if IDEFLOPPY_DEBUG_LOG
908 printk(KERN_NOTICE "ide-floppy: The floppy wants to "
909 "send us more data than expected - "
910 "allowing transfer\n");
911 #endif /* IDEFLOPPY_DEBUG_LOG */
912 }
913 }
914 if (test_bit(PC_WRITING, &pc->flags)) {
915 if (pc->buffer != NULL)
916 /* Write the current buffer */
917 HWIF(drive)->atapi_output_bytes(drive,
918 pc->current_position,
919 bcount.all);
920 else
921 idefloppy_output_buffers(drive, pc, bcount.all);
922 } else {
923 if (pc->buffer != NULL)
924 /* Read the current buffer */
925 HWIF(drive)->atapi_input_bytes(drive,
926 pc->current_position,
927 bcount.all);
928 else
929 idefloppy_input_buffers(drive, pc, bcount.all);
930 }
931 /* Update the current position */
932 pc->actually_transferred += bcount.all;
933 pc->current_position += bcount.all;
934
935 if (HWGROUP(drive)->handler != NULL)
936 BUG();
937 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); /* And set the interrupt handler again */
938 return ide_started;
939 }
940
941 /*
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
945 */
idefloppy_transfer_pc(ide_drive_t * drive)946 static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive)
947 {
948 ide_startstop_t startstop;
949 idefloppy_floppy_t *floppy = drive->driver_data;
950 atapi_ireason_t ireason;
951
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");
955 return startstop;
956 }
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);
962 }
963 if (HWGROUP(drive)->handler != NULL)
964 BUG();
965 /* Set the interrupt routine */
966 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
967 /* Send the actual packet */
968 HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
969 return ide_started;
970 }
971
972
973 /*
974 * What we have here is a classic case of a top half / bottom half
975 * interrupt service routine. In interrupt mode, the device sends
976 * an interrupt to signal it's ready to receive a packet. However,
977 * we need to delay about 2-3 ticks before issuing the packet or we
978 * gets in trouble.
979 *
980 * So, follow carefully. transfer_pc1 is called as an interrupt (or
981 * directly). In either case, when the device says it's ready for a
982 * packet, we schedule the packet transfer to occur about 2-3 ticks
983 * later in transfer_pc2.
984 */
idefloppy_transfer_pc2(ide_drive_t * drive)985 static int idefloppy_transfer_pc2 (ide_drive_t *drive)
986 {
987 idefloppy_floppy_t *floppy = drive->driver_data;
988
989 /* Send the actual packet */
990 HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
991 /* Timeout for the packet command */
992 return IDEFLOPPY_WAIT_CMD;
993 }
994
idefloppy_transfer_pc1(ide_drive_t * drive)995 static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive)
996 {
997 idefloppy_floppy_t *floppy = drive->driver_data;
998 ide_startstop_t startstop;
999 atapi_ireason_t ireason;
1000
1001 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
1002 printk(KERN_ERR "ide-floppy: Strange, packet command "
1003 "initiated yet DRQ isn't asserted\n");
1004 return startstop;
1005 }
1006 ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
1007 if (!ireason.b.cod || ireason.b.io) {
1008 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) "
1009 "while issuing a packet command\n");
1010 return ide_do_reset(drive);
1011 }
1012 /*
1013 * The following delay solves a problem with ATAPI Zip 100 drives
1014 * where the Busy flag was apparently being deasserted before the
1015 * unit was ready to receive data. This was happening on a
1016 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
1017 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
1018 * used until after the packet is moved in about 50 msec.
1019 */
1020 if (HWGROUP(drive)->handler != NULL)
1021 BUG();
1022 ide_set_handler(drive,
1023 &idefloppy_pc_intr, /* service routine for packet command */
1024 floppy->ticks, /* wait this long before "failing" */
1025 &idefloppy_transfer_pc2); /* fail == transfer_pc2 */
1026 return ide_started;
1027 }
1028
1029 /*
1030 * Issue a packet command
1031 */
idefloppy_issue_pc(ide_drive_t * drive,idefloppy_pc_t * pc)1032 static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc)
1033 {
1034 idefloppy_floppy_t *floppy = drive->driver_data;
1035 atapi_feature_t feature;
1036 atapi_bcount_t bcount;
1037 ide_handler_t *pkt_xfer_routine;
1038
1039 #if IDEFLOPPY_DEBUG_BUGS
1040 if (floppy->pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD &&
1041 pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) {
1042 printk(KERN_ERR "ide-floppy: possible ide-floppy.c bug - "
1043 "Two request sense in serial were issued\n");
1044 }
1045 #endif /* IDEFLOPPY_DEBUG_BUGS */
1046
1047 if (floppy->failed_pc == NULL &&
1048 pc->c[0] != IDEFLOPPY_REQUEST_SENSE_CMD)
1049 floppy->failed_pc = pc;
1050 /* Set the current packet command */
1051 floppy->pc = pc;
1052
1053 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES ||
1054 test_bit(PC_ABORT, &pc->flags)) {
1055 /*
1056 * We will "abort" retrying a packet command in case
1057 * a legitimate error code was received.
1058 */
1059 if (!test_bit(PC_ABORT, &pc->flags)) {
1060 if (!test_bit(PC_SUPPRESS_ERROR, &pc->flags)) {
1061 printk(KERN_ERR "ide-floppy: %s: I/O error, "
1062 "pc = %2x, key = %2x, "
1063 "asc = %2x, ascq = %2x\n",
1064 drive->name, pc->c[0],
1065 floppy->sense_key,
1066 floppy->asc, floppy->ascq);
1067 }
1068 /* Giving up */
1069 pc->error = IDEFLOPPY_ERROR_GENERAL;
1070 }
1071 floppy->failed_pc = NULL;
1072 pc->callback(drive);
1073 return ide_stopped;
1074 }
1075 #if IDEFLOPPY_DEBUG_LOG
1076 printk (KERN_INFO "Retry number - %d\n", pc->retries);
1077 #endif /* IDEFLOPPY_DEBUG_LOG */
1078
1079 pc->retries++;
1080 /* We haven't transferred any data yet */
1081 pc->actually_transferred = 0;
1082 pc->current_position = pc->buffer;
1083 bcount.all = IDE_MIN(pc->request_transfer, 63 * 1024);
1084
1085 #ifdef CONFIG_BLK_DEV_IDEDMA
1086 if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) {
1087 (void) HWIF(drive)->ide_dma_off(drive);
1088 }
1089 #endif /* CONFIG_BLK_DEV_IDEDMA */
1090 feature.all = 0;
1091 #ifdef CONFIG_BLK_DEV_IDEDMA
1092 if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma) {
1093 if (test_bit(PC_WRITING, &pc->flags)) {
1094 feature.b.dma = !HWIF(drive)->ide_dma_write(drive);
1095 } else {
1096 feature.b.dma = !HWIF(drive)->ide_dma_read(drive);
1097 }
1098 }
1099 #endif /* CONFIG_BLK_DEV_IDEDMA */
1100
1101 if (IDE_CONTROL_REG)
1102 HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
1103 /* Use PIO/DMA */
1104 HWIF(drive)->OUTB(feature.all, IDE_FEATURE_REG);
1105 HWIF(drive)->OUTB(bcount.b.high, IDE_BCOUNTH_REG);
1106 HWIF(drive)->OUTB(bcount.b.low, IDE_BCOUNTL_REG);
1107 HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG);
1108
1109 #ifdef CONFIG_BLK_DEV_IDEDMA
1110 if (feature.b.dma) { /* Begin DMA, if necessary */
1111 set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
1112 (void) (HWIF(drive)->ide_dma_begin(drive));
1113 }
1114 #endif /* CONFIG_BLK_DEV_IDEDMA */
1115
1116 /* Can we transfer the packet when we get the interrupt or wait? */
1117 if (test_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) {
1118 /* wait */
1119 pkt_xfer_routine = &idefloppy_transfer_pc1;
1120 } else {
1121 /* immediate */
1122 pkt_xfer_routine = &idefloppy_transfer_pc;
1123 }
1124
1125 if (test_bit(IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) {
1126 /* Issue the packet command */
1127 ide_execute_command(drive, WIN_PACKETCMD,
1128 pkt_xfer_routine,
1129 IDEFLOPPY_WAIT_CMD,
1130 NULL);
1131 return ide_started;
1132 } else {
1133 /* Issue the packet command */
1134 HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
1135 return (*pkt_xfer_routine) (drive);
1136 }
1137 }
1138
idefloppy_rw_callback(ide_drive_t * drive)1139 static void idefloppy_rw_callback (ide_drive_t *drive)
1140 {
1141 #if IDEFLOPPY_DEBUG_LOG
1142 printk (KERN_INFO "ide-floppy: Reached idefloppy_rw_callback\n");
1143 #endif /* IDEFLOPPY_DEBUG_LOG */
1144
1145 idefloppy_do_end_request(drive, 1);
1146 return;
1147 }
1148
idefloppy_create_prevent_cmd(idefloppy_pc_t * pc,int prevent)1149 static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent)
1150 {
1151 #if IDEFLOPPY_DEBUG_LOG
1152 printk(KERN_INFO "ide-floppy: creating prevent removal command, "
1153 "prevent = %d\n", prevent);
1154 #endif /* IDEFLOPPY_DEBUG_LOG */
1155
1156 idefloppy_init_pc(pc);
1157 pc->c[0] = IDEFLOPPY_PREVENT_REMOVAL_CMD;
1158 pc->c[4] = prevent;
1159 }
1160
idefloppy_create_read_capacity_cmd(idefloppy_pc_t * pc)1161 static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc)
1162 {
1163 idefloppy_init_pc(pc);
1164 pc->c[0] = IDEFLOPPY_READ_CAPACITY_CMD;
1165 pc->c[7] = 255;
1166 pc->c[8] = 255;
1167 pc->request_transfer = 255;
1168 }
1169
idefloppy_create_format_unit_cmd(idefloppy_pc_t * pc,int b,int l,int flags)1170 static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l,
1171 int flags)
1172 {
1173 idefloppy_init_pc(pc);
1174 pc->c[0] = IDEFLOPPY_FORMAT_UNIT_CMD;
1175 pc->c[1] = 0x17;
1176
1177 memset(pc->buffer, 0, 12);
1178 pc->buffer[1] = 0xA2;
1179 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
1180
1181 if (flags & 1) /* Verify bit on... */
1182 pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */
1183 pc->buffer[3] = 8;
1184
1185 put_unaligned(htonl(b), (unsigned int *)(&pc->buffer[4]));
1186 put_unaligned(htonl(l), (unsigned int *)(&pc->buffer[8]));
1187 pc->buffer_size=12;
1188 set_bit(PC_WRITING, &pc->flags);
1189 }
1190
1191 /*
1192 * A mode sense command is used to "sense" floppy parameters.
1193 */
idefloppy_create_mode_sense_cmd(idefloppy_pc_t * pc,u8 page_code,u8 type)1194 static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type)
1195 {
1196 u16 length = sizeof(idefloppy_mode_parameter_header_t);
1197
1198 idefloppy_init_pc(pc);
1199 pc->c[0] = IDEFLOPPY_MODE_SENSE_CMD;
1200 pc->c[1] = 0;
1201 pc->c[2] = page_code + (type << 6);
1202
1203 switch (page_code) {
1204 case IDEFLOPPY_CAPABILITIES_PAGE:
1205 length += 12;
1206 break;
1207 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
1208 length += 32;
1209 break;
1210 default:
1211 printk(KERN_ERR "ide-floppy: unsupported page code "
1212 "in create_mode_sense_cmd\n");
1213 }
1214 put_unaligned(htons(length), (u16 *) &pc->c[7]);
1215 pc->request_transfer = length;
1216 }
1217
idefloppy_create_start_stop_cmd(idefloppy_pc_t * pc,int start)1218 static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start)
1219 {
1220 idefloppy_init_pc(pc);
1221 pc->c[0] = IDEFLOPPY_START_STOP_CMD;
1222 pc->c[4] = start;
1223 }
1224
idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t * pc)1225 static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc)
1226 {
1227 idefloppy_init_pc(pc);
1228 pc->c[0] = IDEFLOPPY_TEST_UNIT_READY_CMD;
1229 }
1230
idefloppy_create_rw_cmd(idefloppy_floppy_t * floppy,idefloppy_pc_t * pc,struct request * rq,unsigned long sector)1231 static void idefloppy_create_rw_cmd (idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq, unsigned long sector)
1232 {
1233 int block = sector / floppy->bs_factor;
1234 int blocks = rq->nr_sectors / floppy->bs_factor;
1235
1236 #if IDEFLOPPY_DEBUG_LOG
1237 printk("create_rw1%d_cmd: block == %d, blocks == %d\n",
1238 2 * test_bit(IDEFLOPPY_USE_READ12, &floppy->flags),
1239 block, blocks);
1240 #endif /* IDEFLOPPY_DEBUG_LOG */
1241
1242 idefloppy_init_pc(pc);
1243 if (test_bit(IDEFLOPPY_USE_READ12, &floppy->flags)) {
1244 pc->c[0] = rq->cmd == READ ? IDEFLOPPY_READ12_CMD : IDEFLOPPY_WRITE12_CMD;
1245 put_unaligned(htonl(blocks), (unsigned int *) &pc->c[6]);
1246 } else {
1247 pc->c[0] = rq->cmd == READ ? IDEFLOPPY_READ10_CMD : IDEFLOPPY_WRITE10_CMD;
1248 put_unaligned(htons(blocks), (u16 *) &pc->c[7]);
1249 }
1250 put_unaligned(htonl(block), (unsigned int *) &pc->c[2]);
1251 pc->callback = &idefloppy_rw_callback;
1252 pc->rq = rq;
1253 pc->b_data = rq->buffer;
1254 pc->b_count = rq->cmd == READ ? 0 : rq->bh->b_size;
1255 if (rq->cmd == WRITE)
1256 set_bit(PC_WRITING, &pc->flags);
1257 pc->buffer = NULL;
1258 pc->request_transfer = pc->buffer_size = blocks * floppy->block_size;
1259 set_bit(PC_DMA_RECOMMENDED, &pc->flags);
1260 }
1261
1262 /*
1263 * idefloppy_do_request is our request handling function.
1264 */
idefloppy_do_request(ide_drive_t * drive,struct request * rq,unsigned long block)1265 static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, unsigned long block)
1266 {
1267 idefloppy_floppy_t *floppy = drive->driver_data;
1268 idefloppy_pc_t *pc;
1269
1270 #if IDEFLOPPY_DEBUG_LOG
1271 printk(KERN_INFO "rq_status: %d, rq_dev: %u, cmd: %d, errors: %d\n",
1272 rq->rq_status, (unsigned int) rq->rq_dev, rq->cmd, rq->errors);
1273 printk(KERN_INFO "sector: %ld, nr_sectors: %ld, "
1274 "current_nr_sectors: %ld\n", rq->sector,
1275 rq->nr_sectors, rq->current_nr_sectors);
1276 #endif /* IDEFLOPPY_DEBUG_LOG */
1277
1278 if (rq->errors >= ERROR_MAX) {
1279 if (floppy->failed_pc != NULL)
1280 printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x,"
1281 " key = %2x, asc = %2x, ascq = %2x\n",
1282 drive->name, floppy->failed_pc->c[0],
1283 floppy->sense_key, floppy->asc, floppy->ascq);
1284 else
1285 printk(KERN_ERR "ide-floppy: %s: I/O error\n",
1286 drive->name);
1287 idefloppy_do_end_request(drive, 0);
1288 return ide_stopped;
1289 }
1290 switch (rq->cmd) {
1291 case READ:
1292 case WRITE:
1293 if (rq->sector % floppy->bs_factor ||
1294 rq->nr_sectors % floppy->bs_factor) {
1295 printk("%s: unsupported r/w request size\n",
1296 drive->name);
1297 idefloppy_do_end_request(drive, 0);
1298 return ide_stopped;
1299 }
1300 pc = idefloppy_next_pc_storage(drive);
1301 idefloppy_create_rw_cmd(floppy, pc, rq, block);
1302 break;
1303 case IDEFLOPPY_PC_RQ:
1304 pc = (idefloppy_pc_t *) rq->buffer;
1305 break;
1306 default:
1307 printk(KERN_ERR "ide-floppy: unsupported command %x"
1308 " in request queue\n", rq->cmd);
1309 idefloppy_do_end_request(drive, 0);
1310 return ide_stopped;
1311 }
1312 pc->rq = rq;
1313 return idefloppy_issue_pc(drive, pc);
1314 }
1315
1316 /*
1317 * idefloppy_queue_pc_tail adds a special packet command request to the
1318 * tail of the request queue, and waits for it to be serviced.
1319 */
idefloppy_queue_pc_tail(ide_drive_t * drive,idefloppy_pc_t * pc)1320 static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc)
1321 {
1322 struct request rq;
1323
1324 ide_init_drive_cmd(&rq);
1325 rq.buffer = (char *) pc;
1326 rq.cmd = IDEFLOPPY_PC_RQ;
1327 return ide_do_drive_cmd(drive, &rq, ide_wait);
1328 }
1329
1330 /*
1331 * Look at the flexible disk page parameters. We will ignore the CHS
1332 * capacity parameters and use the LBA parameters instead.
1333 */
idefloppy_get_flexible_disk_page(ide_drive_t * drive)1334 static int idefloppy_get_flexible_disk_page (ide_drive_t *drive)
1335 {
1336 idefloppy_floppy_t *floppy = drive->driver_data;
1337 idefloppy_pc_t pc;
1338 idefloppy_mode_parameter_header_t *header;
1339 idefloppy_flexible_disk_page_t *page;
1340 int capacity, lba_capacity;
1341
1342 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, MODE_SENSE_CURRENT);
1343 if (idefloppy_queue_pc_tail(drive,&pc)) {
1344 printk(KERN_ERR "ide-floppy: Can't get flexible disk "
1345 "page parameters\n");
1346 return 1;
1347 }
1348 header = (idefloppy_mode_parameter_header_t *) pc.buffer;
1349 floppy->wp = header->wp;
1350 page = (idefloppy_flexible_disk_page_t *) (header + 1);
1351
1352 page->transfer_rate = ntohs(page->transfer_rate);
1353 page->sector_size = ntohs(page->sector_size);
1354 page->cyls = ntohs(page->cyls);
1355 page->rpm = ntohs(page->rpm);
1356 capacity = page->cyls * page->heads * page->sectors * page->sector_size;
1357 if (memcmp (page, &floppy->flexible_disk_page, sizeof (idefloppy_flexible_disk_page_t)))
1358 printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, "
1359 "%d sector size, %d rpm\n",
1360 drive->name, capacity / 1024, page->cyls,
1361 page->heads, page->sectors,
1362 page->transfer_rate / 8, page->sector_size, page->rpm);
1363
1364 floppy->flexible_disk_page = *page;
1365 drive->bios_cyl = page->cyls;
1366 drive->bios_head = page->heads;
1367 drive->bios_sect = page->sectors;
1368 lba_capacity = floppy->blocks * floppy->block_size;
1369 if (capacity < lba_capacity) {
1370 printk(KERN_NOTICE "%s: The disk reports a capacity of %d "
1371 "bytes, but the drive only handles %d\n",
1372 drive->name, lba_capacity, capacity);
1373 floppy->blocks = floppy->block_size ? capacity / floppy->block_size : 0;
1374 }
1375 return 0;
1376 }
1377
idefloppy_get_capability_page(ide_drive_t * drive)1378 static int idefloppy_get_capability_page(ide_drive_t *drive)
1379 {
1380 idefloppy_floppy_t *floppy = drive->driver_data;
1381 idefloppy_pc_t pc;
1382 idefloppy_mode_parameter_header_t *header;
1383 idefloppy_capabilities_page_t *page;
1384
1385 floppy->srfp = 0;
1386 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE,
1387 MODE_SENSE_CURRENT);
1388
1389 set_bit(PC_SUPPRESS_ERROR, &pc.flags);
1390 if (idefloppy_queue_pc_tail(drive,&pc)) {
1391 return 1;
1392 }
1393
1394 header = (idefloppy_mode_parameter_header_t *) pc.buffer;
1395 page= (idefloppy_capabilities_page_t *)(header+1);
1396 floppy->srfp = page->srfp;
1397 return (0);
1398 }
1399
1400 /*
1401 * Determine if a media is present in the floppy drive, and if so,
1402 * its LBA capacity.
1403 */
idefloppy_get_capacity(ide_drive_t * drive)1404 static int idefloppy_get_capacity (ide_drive_t *drive)
1405 {
1406 idefloppy_floppy_t *floppy = drive->driver_data;
1407 idefloppy_pc_t pc;
1408 idefloppy_capacity_header_t *header;
1409 idefloppy_capacity_descriptor_t *descriptor;
1410 int i, descriptors, rc = 1, blocks, length;
1411
1412 drive->bios_cyl = 0;
1413 drive->bios_head = drive->bios_sect = 0;
1414 floppy->blocks = floppy->bs_factor = 0;
1415 drive->part[0].nr_sects = 0;
1416
1417 idefloppy_create_read_capacity_cmd(&pc);
1418 if (idefloppy_queue_pc_tail(drive, &pc)) {
1419 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1420 return 1;
1421 }
1422 header = (idefloppy_capacity_header_t *) pc.buffer;
1423 descriptors = header->length / sizeof(idefloppy_capacity_descriptor_t);
1424 descriptor = (idefloppy_capacity_descriptor_t *) (header + 1);
1425
1426 for (i = 0; i < descriptors; i++, descriptor++) {
1427 blocks = descriptor->blocks = ntohl(descriptor->blocks);
1428 length = descriptor->length = ntohs(descriptor->length);
1429
1430 if (!i)
1431 {
1432 switch (descriptor->dc) {
1433 /* Clik! drive returns this instead of CAPACITY_CURRENT */
1434 case CAPACITY_UNFORMATTED:
1435 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags))
1436 /*
1437 * If it is not a clik drive, break out
1438 * (maintains previous driver behaviour)
1439 */
1440 break;
1441 case CAPACITY_CURRENT:
1442 /* Normal Zip/LS-120 disks */
1443 if (memcmp(descriptor, &floppy->capacity, sizeof (idefloppy_capacity_descriptor_t)))
1444 printk(KERN_INFO "%s: %dkB, %d blocks, %d "
1445 "sector size\n", drive->name,
1446 blocks * length / 1024, blocks, length);
1447 floppy->capacity = *descriptor;
1448 if (!length || length % 512) {
1449 printk(KERN_NOTICE "%s: %d bytes block size "
1450 "not supported\n", drive->name, length);
1451 } else {
1452 floppy->blocks = blocks;
1453 floppy->block_size = length;
1454 if ((floppy->bs_factor = length / 512) != 1)
1455 printk(KERN_NOTICE "%s: warning: non "
1456 "512 bytes block size not "
1457 "fully supported\n",
1458 drive->name);
1459 rc = 0;
1460 }
1461 break;
1462 case CAPACITY_NO_CARTRIDGE:
1463 /*
1464 * This is a KERN_ERR so it appears on screen
1465 * for the user to see
1466 */
1467 printk(KERN_ERR "%s: No disk in drive\n", drive->name);
1468 break;
1469 case CAPACITY_INVALID:
1470 printk(KERN_ERR "%s: Invalid capacity for disk "
1471 "in drive\n", drive->name);
1472 break;
1473 }
1474 }
1475 if (!i) {
1476 IDEFLOPPY_DEBUG( "Descriptor 0 Code: %d\n",
1477 descriptor->dc);
1478 }
1479 IDEFLOPPY_DEBUG( "Descriptor %d: %dkB, %d blocks, %d "
1480 "sector size\n", i, blocks * length / 1024, blocks,
1481 length);
1482 }
1483
1484 /* Clik! disk does not support get_flexible_disk_page */
1485 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
1486 (void) idefloppy_get_flexible_disk_page(drive);
1487 }
1488
1489 drive->part[0].nr_sects = floppy->blocks * floppy->bs_factor;
1490 return rc;
1491 }
1492
1493 /*
1494 ** Obtain the list of formattable capacities.
1495 ** Very similar to idefloppy_get_capacity, except that we push the capacity
1496 ** descriptors to userland, instead of our own structures.
1497 **
1498 ** Userland gives us the following structure:
1499 **
1500 ** struct idefloppy_format_capacities {
1501 ** int nformats;
1502 ** struct {
1503 ** int nblocks;
1504 ** int blocksize;
1505 ** } formats[];
1506 ** } ;
1507 **
1508 ** userland initializes nformats to the number of allocated formats[]
1509 ** records. On exit we set nformats to the number of records we've
1510 ** actually initialized.
1511 **
1512 */
1513
idefloppy_get_format_capacities(ide_drive_t * drive,struct inode * inode,struct file * file,int * arg)1514 static int idefloppy_get_format_capacities (ide_drive_t *drive,
1515 struct inode *inode,
1516 struct file *file,
1517 int *arg) /* Cheater */
1518 {
1519 idefloppy_pc_t pc;
1520 idefloppy_capacity_header_t *header;
1521 idefloppy_capacity_descriptor_t *descriptor;
1522 int i, descriptors, blocks, length;
1523 int u_array_size;
1524 int u_index;
1525 int *argp;
1526
1527 if (get_user(u_array_size, arg))
1528 return (-EFAULT);
1529
1530 if (u_array_size <= 0)
1531 return (-EINVAL);
1532
1533 idefloppy_create_read_capacity_cmd(&pc);
1534 if (idefloppy_queue_pc_tail(drive, &pc)) {
1535 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1536 return (-EIO);
1537 }
1538 header = (idefloppy_capacity_header_t *) pc.buffer;
1539 descriptors = header->length /
1540 sizeof(idefloppy_capacity_descriptor_t);
1541 descriptor = (idefloppy_capacity_descriptor_t *) (header + 1);
1542
1543 u_index = 0;
1544 argp = arg + 1;
1545
1546 /*
1547 ** We always skip the first capacity descriptor. That's the
1548 ** current capacity. We are interested in the remaining descriptors,
1549 ** the formattable capacities.
1550 */
1551
1552 for (i=0; i<descriptors; i++, descriptor++) {
1553 if (u_index >= u_array_size)
1554 break; /* User-supplied buffer too small */
1555 if (i == 0)
1556 continue; /* Skip the first descriptor */
1557
1558 blocks = ntohl(descriptor->blocks);
1559 length = ntohs(descriptor->length);
1560
1561 if (put_user(blocks, argp))
1562 return(-EFAULT);
1563 ++argp;
1564
1565 if (put_user(length, argp))
1566 return (-EFAULT);
1567 ++argp;
1568
1569 ++u_index;
1570 }
1571
1572 if (put_user(u_index, arg))
1573 return (-EFAULT);
1574 return (0);
1575 }
1576
1577 /*
1578 ** Send ATAPI_FORMAT_UNIT to the drive.
1579 **
1580 ** Userland gives us the following structure:
1581 **
1582 ** struct idefloppy_format_command {
1583 ** int nblocks;
1584 ** int blocksize;
1585 ** int flags;
1586 ** } ;
1587 **
1588 ** flags is a bitmask, currently, the only defined flag is:
1589 **
1590 ** 0x01 - verify media after format.
1591 */
1592
idefloppy_begin_format(ide_drive_t * drive,struct inode * inode,struct file * file,int * arg)1593 static int idefloppy_begin_format(ide_drive_t *drive,
1594 struct inode *inode,
1595 struct file *file,
1596 int *arg)
1597 {
1598 int blocks;
1599 int length;
1600 int flags;
1601 idefloppy_pc_t pc;
1602
1603 if (get_user(blocks, arg) ||
1604 get_user(length, arg+1) ||
1605 get_user(flags, arg+2)) {
1606 return (-EFAULT);
1607 }
1608
1609 /* Get the SFRP bit */
1610 (void) idefloppy_get_capability_page(drive);
1611 idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
1612 if (idefloppy_queue_pc_tail(drive, &pc)) {
1613 return (-EIO);
1614 }
1615
1616 return (0);
1617 }
1618
1619 /*
1620 ** Get ATAPI_FORMAT_UNIT progress indication.
1621 **
1622 ** Userland gives a pointer to an int. The int is set to a progresss
1623 ** indicator 0-65536, with 65536=100%.
1624 **
1625 ** If the drive does not support format progress indication, we just check
1626 ** the dsc bit, and return either 0 or 65536.
1627 */
1628
idefloppy_get_format_progress(ide_drive_t * drive,struct inode * inode,struct file * file,int * arg)1629 static int idefloppy_get_format_progress(ide_drive_t *drive,
1630 struct inode *inode,
1631 struct file *file,
1632 int *arg)
1633 {
1634 idefloppy_floppy_t *floppy = drive->driver_data;
1635 idefloppy_pc_t pc;
1636 int progress_indication = 0x10000;
1637
1638 if (floppy->srfp) {
1639 idefloppy_create_request_sense_cmd(&pc);
1640 if (idefloppy_queue_pc_tail(drive, &pc)) {
1641 return (-EIO);
1642 }
1643
1644 if (floppy->sense_key == 2 &&
1645 floppy->asc == 4 &&
1646 floppy->ascq == 4) {
1647 progress_indication = floppy->progress_indication;
1648 }
1649 /* Else assume format_unit has finished, and we're
1650 ** at 0x10000 */
1651 } else {
1652 atapi_status_t status;
1653 unsigned long flags;
1654
1655 local_irq_save(flags);
1656 status.all = HWIF(drive)->INB(IDE_STATUS_REG);
1657 local_irq_restore(flags);
1658
1659 progress_indication = !status.b.dsc ? 0 : 0x10000;
1660 }
1661 if (put_user(progress_indication, arg))
1662 return (-EFAULT);
1663
1664 return (0);
1665 }
1666
1667 /*
1668 * Our special ide-floppy ioctl's.
1669 *
1670 * Currently there aren't any ioctl's.
1671 */
idefloppy_ioctl(ide_drive_t * drive,struct inode * inode,struct file * file,unsigned int cmd,unsigned long arg)1672 static int idefloppy_ioctl (ide_drive_t *drive, struct inode *inode, struct file *file,
1673 unsigned int cmd, unsigned long arg)
1674 {
1675 idefloppy_pc_t pc;
1676 idefloppy_floppy_t *floppy = drive->driver_data;
1677 int prevent = (arg) ? 1 : 0;
1678
1679 switch (cmd) {
1680 case CDROMEJECT:
1681 prevent = 0;
1682 /* fall through */
1683 case CDROM_LOCKDOOR:
1684 if (drive->usage > 1)
1685 return -EBUSY;
1686
1687 /* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */
1688 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
1689 idefloppy_create_prevent_cmd(&pc, prevent);
1690 (void) idefloppy_queue_pc_tail(drive, &pc);
1691 }
1692 if (cmd == CDROMEJECT) {
1693 idefloppy_create_start_stop_cmd(&pc, 2);
1694 (void) idefloppy_queue_pc_tail(drive, &pc);
1695 }
1696 return 0;
1697 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
1698 return (0);
1699 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
1700 return (idefloppy_get_format_capacities(drive, inode, file,
1701 (int *)arg));
1702 case IDEFLOPPY_IOCTL_FORMAT_START:
1703
1704 if (!(file->f_mode & 2))
1705 return (-EPERM);
1706
1707 {
1708 idefloppy_floppy_t *floppy = drive->driver_data;
1709
1710 if (drive->usage > 1) {
1711 /* Don't format if someone is using the disk */
1712
1713 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS,
1714 &floppy->flags);
1715 return -EBUSY;
1716 } else {
1717 int rc;
1718
1719 set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS,
1720 &floppy->flags);
1721
1722 rc=idefloppy_begin_format(drive, inode,
1723 file,
1724 (int *)arg);
1725
1726 if (rc)
1727 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS,
1728 &floppy->flags);
1729 return (rc);
1730
1731 /*
1732 ** Note, the bit will be cleared when the device is
1733 ** closed. This is the cleanest way to handle the
1734 ** situation where the drive does not support
1735 ** format progress reporting.
1736 */
1737 }
1738 }
1739 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
1740 return (idefloppy_get_format_progress(drive, inode, file,
1741 (int *)arg));
1742 }
1743 return -EIO;
1744 }
1745
1746 /*
1747 * Our open/release functions
1748 */
idefloppy_open(struct inode * inode,struct file * filp,ide_drive_t * drive)1749 static int idefloppy_open (struct inode *inode, struct file *filp, ide_drive_t *drive)
1750 {
1751 idefloppy_floppy_t *floppy = drive->driver_data;
1752 idefloppy_pc_t pc;
1753
1754 #if IDEFLOPPY_DEBUG_LOG
1755 printk(KERN_INFO "Reached idefloppy_open\n");
1756 #endif /* IDEFLOPPY_DEBUG_LOG */
1757
1758 MOD_INC_USE_COUNT;
1759 if (drive->usage == 1) {
1760 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
1761 /* Just in case */
1762
1763 idefloppy_create_test_unit_ready_cmd(&pc);
1764 if (idefloppy_queue_pc_tail(drive, &pc)) {
1765 idefloppy_create_start_stop_cmd(&pc, 1);
1766 (void) idefloppy_queue_pc_tail(drive, &pc);
1767 }
1768
1769 if (idefloppy_get_capacity (drive)
1770 && (filp->f_flags & O_NDELAY) == 0
1771 /*
1772 ** Allow O_NDELAY to open a drive without a disk, or with
1773 ** an unreadable disk, so that we can get the format
1774 ** capacity of the drive or begin the format - Sam
1775 */
1776 ) {
1777 drive->usage--;
1778 MOD_DEC_USE_COUNT;
1779 return -EIO;
1780 }
1781
1782 if (floppy->wp && (filp->f_mode & 2)) {
1783 drive->usage--;
1784 MOD_DEC_USE_COUNT;
1785 return -EROFS;
1786 }
1787 set_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags);
1788 /* IOMEGA Clik! drives do not support lock/unlock commands */
1789 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
1790 idefloppy_create_prevent_cmd(&pc, 1);
1791 (void) idefloppy_queue_pc_tail(drive, &pc);
1792 }
1793 check_disk_change(inode->i_rdev);
1794 } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) {
1795 drive->usage--;
1796 MOD_DEC_USE_COUNT;
1797 return -EBUSY;
1798 }
1799 return 0;
1800 }
1801
idefloppy_release(struct inode * inode,struct file * filp,ide_drive_t * drive)1802 static void idefloppy_release (struct inode *inode, struct file *filp, ide_drive_t *drive)
1803 {
1804 idefloppy_pc_t pc;
1805
1806 #if IDEFLOPPY_DEBUG_LOG
1807 printk (KERN_INFO "Reached idefloppy_release\n");
1808 #endif /* IDEFLOPPY_DEBUG_LOG */
1809
1810 if (!drive->usage) {
1811 idefloppy_floppy_t *floppy = drive->driver_data;
1812
1813 invalidate_bdev(inode->i_bdev, 0);
1814
1815 /* IOMEGA Clik! drives do not support lock/unlock commands */
1816 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
1817 idefloppy_create_prevent_cmd(&pc, 0);
1818 (void) idefloppy_queue_pc_tail(drive, &pc);
1819 }
1820
1821 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
1822 }
1823 MOD_DEC_USE_COUNT;
1824 }
1825
1826 /*
1827 * Check media change. Use a simple algorithm for now.
1828 */
idefloppy_media_change(ide_drive_t * drive)1829 static int idefloppy_media_change (ide_drive_t *drive)
1830 {
1831 idefloppy_floppy_t *floppy = drive->driver_data;
1832
1833 return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags);
1834 }
1835
1836 /*
1837 * Revalidate the new media. Should set blk_size[]
1838 */
idefloppy_revalidate(ide_drive_t * drive)1839 static void idefloppy_revalidate (ide_drive_t *drive)
1840 {
1841 grok_partitions(HWIF(drive)->gd, drive->select.b.unit,
1842 1<<PARTN_BITS,
1843 current_capacity(drive));
1844 }
1845
1846 /*
1847 * Return the current floppy capacity to ide.c.
1848 */
idefloppy_capacity(ide_drive_t * drive)1849 static unsigned long idefloppy_capacity (ide_drive_t *drive)
1850 {
1851 idefloppy_floppy_t *floppy = drive->driver_data;
1852 unsigned long capacity = floppy->blocks * floppy->bs_factor;
1853
1854 return capacity;
1855 }
1856
1857 /*
1858 * idefloppy_identify_device checks if we can support a drive,
1859 * based on the ATAPI IDENTIFY command results.
1860 */
idefloppy_identify_device(ide_drive_t * drive,struct hd_driveid * id)1861 static int idefloppy_identify_device (ide_drive_t *drive,struct hd_driveid *id)
1862 {
1863 struct idefloppy_id_gcw gcw;
1864 #if IDEFLOPPY_DEBUG_INFO
1865 u16 mask,i;
1866 char buffer[80];
1867 #endif /* IDEFLOPPY_DEBUG_INFO */
1868
1869 *((u16 *) &gcw) = id->config;
1870
1871 #ifdef CONFIG_PPC
1872 /* kludge for Apple PowerBook internal zip */
1873 if ((gcw.device_type == 5) &&
1874 !strstr(id->model, "CD-ROM") &&
1875 strstr(id->model, "ZIP"))
1876 gcw.device_type = 0;
1877 #endif
1878
1879 #if IDEFLOPPY_DEBUG_INFO
1880 printk(KERN_INFO "Dumping ATAPI Identify Device floppy parameters\n");
1881 switch (gcw.protocol) {
1882 case 0: case 1: sprintf(buffer, "ATA");break;
1883 case 2: sprintf(buffer, "ATAPI");break;
1884 case 3: sprintf(buffer, "Reserved (Unknown to ide-floppy)");break;
1885 }
1886 printk(KERN_INFO "Protocol Type: %s\n", buffer);
1887 switch (gcw.device_type) {
1888 case 0: sprintf(buffer, "Direct-access Device");break;
1889 case 1: sprintf(buffer, "Streaming Tape Device");break;
1890 case 2: case 3: case 4: sprintf (buffer, "Reserved");break;
1891 case 5: sprintf(buffer, "CD-ROM Device");break;
1892 case 6: sprintf(buffer, "Reserved");
1893 case 7: sprintf(buffer, "Optical memory Device");break;
1894 case 0x1f: sprintf(buffer, "Unknown or no Device type");break;
1895 default: sprintf(buffer, "Reserved");
1896 }
1897 printk(KERN_INFO "Device Type: %x - %s\n", gcw.device_type, buffer);
1898 printk(KERN_INFO "Removable: %s\n",gcw.removable ? "Yes":"No");
1899 switch (gcw.drq_type) {
1900 case 0: sprintf(buffer, "Microprocessor DRQ");break;
1901 case 1: sprintf(buffer, "Interrupt DRQ");break;
1902 case 2: sprintf(buffer, "Accelerated DRQ");break;
1903 case 3: sprintf(buffer, "Reserved");break;
1904 }
1905 printk(KERN_INFO "Command Packet DRQ Type: %s\n", buffer);
1906 switch (gcw.packet_size) {
1907 case 0: sprintf(buffer, "12 bytes");break;
1908 case 1: sprintf(buffer, "16 bytes");break;
1909 default: sprintf(buffer, "Reserved");break;
1910 }
1911 printk(KERN_INFO "Command Packet Size: %s\n", buffer);
1912 printk(KERN_INFO "Model: %.40s\n",id->model);
1913 printk(KERN_INFO "Firmware Revision: %.8s\n",id->fw_rev);
1914 printk(KERN_INFO "Serial Number: %.20s\n",id->serial_no);
1915 printk(KERN_INFO "Write buffer size(?): %d bytes\n",id->buf_size*512);
1916 printk(KERN_INFO "DMA: %s",id->capability & 0x01 ? "Yes\n":"No\n");
1917 printk(KERN_INFO "LBA: %s",id->capability & 0x02 ? "Yes\n":"No\n");
1918 printk(KERN_INFO "IORDY can be disabled: %s",id->capability & 0x04 ? "Yes\n":"No\n");
1919 printk(KERN_INFO "IORDY supported: %s",id->capability & 0x08 ? "Yes\n":"Unknown\n");
1920 printk(KERN_INFO "ATAPI overlap supported: %s",id->capability & 0x20 ? "Yes\n":"No\n");
1921 printk(KERN_INFO "PIO Cycle Timing Category: %d\n",id->tPIO);
1922 printk(KERN_INFO "DMA Cycle Timing Category: %d\n",id->tDMA);
1923 printk(KERN_INFO "Single Word DMA supported modes:\n");
1924 for (i=0,mask=1;i<8;i++,mask=mask << 1) {
1925 if (id->dma_1word & mask)
1926 printk(KERN_INFO " Mode %d%s\n", i,
1927 (id->dma_1word & (mask << 8)) ? " (active)" : "");
1928 }
1929 printk(KERN_INFO "Multi Word DMA supported modes:\n");
1930 for (i=0,mask=1;i<8;i++,mask=mask << 1) {
1931 if (id->dma_mword & mask)
1932 printk(KERN_INFO " Mode %d%s\n", i,
1933 (id->dma_mword & (mask << 8)) ? " (active)" : "");
1934 }
1935 if (id->field_valid & 0x0002) {
1936 printk(KERN_INFO "Enhanced PIO Modes: %s\n",
1937 id->eide_pio_modes & 1 ? "Mode 3":"None");
1938 if (id->eide_dma_min == 0)
1939 sprintf(buffer, "Not supported");
1940 else
1941 sprintf(buffer, "%d ns",id->eide_dma_min);
1942 printk(KERN_INFO "Minimum Multi-word DMA cycle per word: %s\n", buffer);
1943 if (id->eide_dma_time == 0)
1944 sprintf(buffer, "Not supported");
1945 else
1946 sprintf(buffer, "%d ns",id->eide_dma_time);
1947 printk(KERN_INFO "Manufacturer\'s Recommended Multi-word cycle: %s\n", buffer);
1948 if (id->eide_pio == 0)
1949 sprintf(buffer, "Not supported");
1950 else
1951 sprintf(buffer, "%d ns",id->eide_pio);
1952 printk(KERN_INFO "Minimum PIO cycle without IORDY: %s\n",
1953 buffer);
1954 if (id->eide_pio_iordy == 0)
1955 sprintf(buffer, "Not supported");
1956 else
1957 sprintf(buffer, "%d ns",id->eide_pio_iordy);
1958 printk(KERN_INFO "Minimum PIO cycle with IORDY: %s\n", buffer);
1959 } else
1960 printk(KERN_INFO "According to the device, fields 64-70 are not valid.\n");
1961 #endif /* IDEFLOPPY_DEBUG_INFO */
1962
1963 if (gcw.protocol != 2)
1964 printk(KERN_ERR "ide-floppy: Protocol is not ATAPI\n");
1965 else if (gcw.device_type != 0)
1966 printk(KERN_ERR "ide-floppy: Device type is not set to floppy\n");
1967 else if (!gcw.removable)
1968 printk(KERN_ERR "ide-floppy: The removable flag is not set\n");
1969 else if (gcw.drq_type == 3) {
1970 printk(KERN_ERR "ide-floppy: Sorry, DRQ type %d not supported\n", gcw.drq_type);
1971 } else if (gcw.packet_size != 0) {
1972 printk(KERN_ERR "ide-floppy: Packet size is not 12 bytes long\n");
1973 } else
1974 return 1;
1975 return 0;
1976 }
1977
idefloppy_add_settings(ide_drive_t * drive)1978 static void idefloppy_add_settings(ide_drive_t *drive)
1979 {
1980 int major = HWIF(drive)->major;
1981 int minor = drive->select.b.unit << PARTN_BITS;
1982 idefloppy_floppy_t *floppy = drive->driver_data;
1983
1984 /*
1985 * drive setting name read/write ioctl ioctl data type min max mul_factor div_factor data pointer set function
1986 */
1987 ide_add_setting(drive, "bios_cyl", SETTING_RW, -1, -1, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL);
1988 ide_add_setting(drive, "bios_head", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
1989 ide_add_setting(drive, "bios_sect", SETTING_RW, -1, -1, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
1990 ide_add_setting(drive, "breada_readahead", SETTING_RW, BLKRAGET, BLKRASET, TYPE_INT, 0, 255, 1, 2, &read_ahead[major], NULL);
1991 ide_add_setting(drive, "file_readahead", SETTING_RW, BLKFRAGET, BLKFRASET, TYPE_INTA, 0, INT_MAX, 1, 1024, &max_readahead[major][minor], NULL);
1992 ide_add_setting(drive, "max_kb_per_request", SETTING_RW, BLKSECTGET, BLKSECTSET, TYPE_INTA, 1, 255, 1, 2, &max_sectors[major][minor], NULL);
1993 ide_add_setting(drive, "ticks", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL);
1994 }
1995
1996 /*
1997 * Driver initialization.
1998 */
idefloppy_setup(ide_drive_t * drive,idefloppy_floppy_t * floppy)1999 static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy)
2000 {
2001 struct idefloppy_id_gcw gcw;
2002 int major = HWIF(drive)->major, i;
2003 int minor = drive->select.b.unit << PARTN_BITS;
2004
2005 *((u16 *) &gcw) = drive->id->config;
2006 drive->driver_data = floppy;
2007 drive->ready_stat = 0;
2008 memset(floppy, 0, sizeof(idefloppy_floppy_t));
2009 floppy->drive = drive;
2010 floppy->pc = floppy->pc_stack;
2011 if (gcw.drq_type == 1)
2012 set_bit(IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags);
2013 /*
2014 * We used to check revisions here. At this point however
2015 * I'm giving up. Just assume they are all broken, its easier.
2016 *
2017 * The actual reason for the workarounds was likely
2018 * a driver bug after all rather than a firmware bug,
2019 * and the workaround below used to hide it. It should
2020 * be fixed as of version 1.9, but to be on the safe side
2021 * we'll leave the limitation below for the 2.2.x tree.
2022 */
2023
2024 if (strcmp(drive->id->model, "IOMEGA ZIP 100 ATAPI") == 0) {
2025 set_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags);
2026 /* This value will be visible in the /proc/ide/hdx/settings */
2027 floppy->ticks = IDEFLOPPY_TICKS_DELAY;
2028 for (i = 0; i < 1 << PARTN_BITS; i++)
2029 max_sectors[major][minor + i] = 64;
2030 }
2031
2032 /*
2033 * Guess what? The IOMEGA Clik! drive also needs the
2034 * above fix. It makes nasty clicking noises without
2035 * it, so please don't remove this.
2036 */
2037 if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
2038 for (i = 0; i < 1 << PARTN_BITS; i++)
2039 max_sectors[major][minor + i] = 64;
2040 set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags);
2041 }
2042
2043
2044 (void) idefloppy_get_capacity(drive);
2045 idefloppy_add_settings(drive);
2046 for (i = 0; i < MAX_DRIVES; ++i) {
2047 ide_hwif_t *hwif = HWIF(drive);
2048
2049 if (drive != &hwif->drives[i]) continue;
2050 hwif->gd->de_arr[i] = drive->de;
2051 if (drive->removable)
2052 hwif->gd->flags[i] |= GENHD_FL_REMOVABLE;
2053 break;
2054 }
2055 }
2056
idefloppy_cleanup(ide_drive_t * drive)2057 static int idefloppy_cleanup (ide_drive_t *drive)
2058 {
2059 idefloppy_floppy_t *floppy = drive->driver_data;
2060
2061 if (ide_unregister_subdriver(drive))
2062 return 1;
2063
2064 drive->driver_data = NULL;
2065 kfree(floppy);
2066 return 0;
2067 }
2068
2069 #ifdef CONFIG_PROC_FS
2070
2071 static ide_proc_entry_t idefloppy_proc[] = {
2072 { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
2073 { NULL, 0, NULL, NULL }
2074 };
2075
2076 #else
2077
2078 #define idefloppy_proc NULL
2079
2080 #endif /* CONFIG_PROC_FS */
2081
2082 int idefloppy_init (void);
2083 int idefloppy_attach(ide_drive_t *drive);
2084
2085 /*
2086 * IDE subdriver functions, registered with ide.c
2087 */
2088 static ide_driver_t idefloppy_driver = {
2089 name: "ide-floppy",
2090 version: IDEFLOPPY_VERSION,
2091 media: ide_floppy,
2092 busy: 0,
2093 supports_dma: 1,
2094 supports_dsc_overlap: 0,
2095 cleanup: idefloppy_cleanup,
2096 standby: NULL,
2097 suspend: NULL,
2098 resume: NULL,
2099 flushcache: NULL,
2100 do_request: idefloppy_do_request,
2101 end_request: idefloppy_do_end_request,
2102 sense: NULL,
2103 error: NULL,
2104 ioctl: idefloppy_ioctl,
2105 open: idefloppy_open,
2106 release: idefloppy_release,
2107 media_change: idefloppy_media_change,
2108 revalidate: idefloppy_revalidate,
2109 pre_reset: NULL,
2110 capacity: idefloppy_capacity,
2111 special: NULL,
2112 proc: idefloppy_proc,
2113 init: idefloppy_init,
2114 attach: idefloppy_attach,
2115 ata_prebuilder: NULL,
2116 atapi_prebuilder: NULL,
2117 };
2118
2119 static ide_module_t idefloppy_module = {
2120 IDE_DRIVER_MODULE,
2121 idefloppy_init,
2122 &idefloppy_driver,
2123 NULL
2124 };
2125
idefloppy_attach(ide_drive_t * drive)2126 int idefloppy_attach (ide_drive_t *drive)
2127 {
2128 idefloppy_floppy_t *floppy;
2129 int ret = 0;
2130
2131 MOD_INC_USE_COUNT;
2132 if (!idefloppy_identify_device(drive, drive->id)) {
2133 printk(KERN_ERR "ide-floppy: %s: not supported by this "
2134 "version of ide-floppy\n", drive->name);
2135 ret = 1;
2136 goto bye_game_over;
2137 }
2138 if (drive->scsi) {
2139 printk("ide-floppy: passing drive %s to ide-scsi "
2140 "emulation.\n", drive->name);
2141 ret = 1;
2142 goto bye_game_over;
2143 }
2144 if ((floppy = (idefloppy_floppy_t *) kmalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) {
2145 printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy "
2146 "structure\n", drive->name);
2147 ret = 1;
2148 goto bye_game_over;
2149 }
2150 if (ide_register_subdriver(drive,
2151 &idefloppy_driver, IDE_SUBDRIVER_VERSION)) {
2152 printk(KERN_ERR "ide-floppy: %s: Failed to register the "
2153 "driver with ide.c\n", drive->name);
2154 kfree(floppy);
2155 ret = 1;
2156 goto bye_game_over;
2157 }
2158 DRIVER(drive)->busy++;
2159 idefloppy_setup(drive, floppy);
2160 DRIVER(drive)->busy--;
2161
2162 bye_game_over:
2163 MOD_DEC_USE_COUNT;
2164 return ret;
2165 }
2166
2167 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
2168
idefloppy_exit(void)2169 static void __exit idefloppy_exit (void)
2170 {
2171 ide_drive_t *drive;
2172 int failed = 0;
2173
2174 while ((drive = ide_scan_devices(ide_floppy, idefloppy_driver.name,
2175 &idefloppy_driver, failed)) != NULL) {
2176 if (idefloppy_cleanup(drive)) {
2177 printk("%s: cleanup_module() called while still "
2178 "busy\n", drive->name);
2179 failed++;
2180 }
2181 /* We must remove proc entries defined in this module.
2182 Otherwise we oops while accessing these entries */
2183 #ifdef CONFIG_PROC_FS
2184 if (drive->proc)
2185 ide_remove_proc_entries(drive->proc, idefloppy_proc);
2186 #endif
2187 }
2188 ide_unregister_module(&idefloppy_module);
2189 }
2190
idefloppy_init(void)2191 int idefloppy_init (void)
2192 {
2193 #ifdef CLASSIC_BUILTINS_METHOD
2194 ide_drive_t *drive;
2195 idefloppy_floppy_t *floppy;
2196 int failed = 0;
2197
2198 #endif /* CLASSIC_BUILTINS_METHOD */
2199 MOD_INC_USE_COUNT;
2200 #ifdef CLASSIC_BUILTINS_METHOD
2201 while ((drive = ide_scan_devices(ide_floppy,
2202 idefloppy_driver.name, NULL, failed++)) != NULL) {
2203 if (!idefloppy_identify_device(drive, drive->id)) {
2204 printk(KERN_ERR "ide-floppy: %s: not supported by "
2205 "this version of ide-floppy\n", drive->name);
2206 continue;
2207 }
2208 if (drive->scsi) {
2209 printk("ide-floppy: passing drive %s to ide-scsi "
2210 "emulation.\n", drive->name);
2211 continue;
2212 }
2213 if ((floppy = (idefloppy_floppy_t *) kmalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) {
2214 printk(KERN_ERR "ide-floppy: %s: Can't allocate a "
2215 "floppy structure\n", drive->name);
2216 continue;
2217 }
2218 if (ide_register_subdriver(drive,
2219 &idefloppy_driver, IDE_SUBDRIVER_VERSION)) {
2220 printk(KERN_ERR "ide-floppy: %s: Failed to register "
2221 "the driver with ide.c\n", drive->name);
2222 kfree(floppy);
2223 continue;
2224 }
2225 DRIVER(drive)->busy++;
2226 idefloppy_setup(drive, floppy);
2227 DRIVER(drive)->busy--;
2228 failed--;
2229 }
2230 #endif /* CLASSIC_BUILTINS_METHOD */
2231 ide_register_module(&idefloppy_module);
2232 MOD_DEC_USE_COUNT;
2233 return 0;
2234 }
2235
2236 module_init(idefloppy_init);
2237 module_exit(idefloppy_exit);
2238 MODULE_LICENSE("GPL");
2239