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1da177e4 | 1 | /* |
d3f20848 BP |
2 | * IDE ATAPI floppy driver. |
3 | * | |
59bca8cc BZ |
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 | |
1da177e4 LT |
7 | */ |
8 | ||
9 | /* | |
1da177e4 LT |
10 | * The driver currently doesn't have any fancy features, just the bare |
11 | * minimum read/write support. | |
12 | * | |
13 | * This driver supports the following IDE floppy drives: | |
14 | * | |
15 | * LS-120/240 SuperDisk | |
16 | * Iomega Zip 100/250 | |
17 | * Iomega PC Card Clik!/PocketZip | |
18 | * | |
d3f20848 BP |
19 | * For a historical changelog see |
20 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 | |
1da177e4 LT |
21 | */ |
22 | ||
23 | #define IDEFLOPPY_VERSION "0.99.newide" | |
24 | ||
1da177e4 LT |
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> | |
31 | #include <linux/mm.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> | |
cf8b8975 | 40 | #include <linux/mutex.h> |
1da177e4 | 41 | |
89636af2 BZ |
42 | #include <scsi/scsi_ioctl.h> |
43 | ||
1da177e4 LT |
44 | #include <asm/byteorder.h> |
45 | #include <asm/irq.h> | |
46 | #include <asm/uaccess.h> | |
47 | #include <asm/io.h> | |
48 | #include <asm/unaligned.h> | |
49 | ||
50 | /* | |
51 | * The following are used to debug the driver. | |
52 | */ | |
53 | #define IDEFLOPPY_DEBUG_LOG 0 | |
54 | #define IDEFLOPPY_DEBUG_INFO 0 | |
55 | #define IDEFLOPPY_DEBUG_BUGS 1 | |
56 | ||
57 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ | |
58 | #define IDEFLOPPY_DEBUG( fmt, args... ) | |
59 | ||
60 | #if IDEFLOPPY_DEBUG_LOG | |
61 | #define debug_log printk | |
62 | #else | |
63 | #define debug_log(fmt, args... ) do {} while(0) | |
64 | #endif | |
65 | ||
66 | ||
67 | /* | |
68 | * Some drives require a longer irq timeout. | |
69 | */ | |
70 | #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) | |
71 | ||
72 | /* | |
73 | * After each failed packet command we issue a request sense command | |
74 | * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
75 | */ | |
76 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
77 | ||
78 | /* | |
79 | * With each packet command, we allocate a buffer of | |
80 | * IDEFLOPPY_PC_BUFFER_SIZE bytes. | |
81 | */ | |
82 | #define IDEFLOPPY_PC_BUFFER_SIZE 256 | |
83 | ||
84 | /* | |
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. | |
88 | */ | |
89 | #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES) | |
90 | ||
91 | /* | |
92 | * Our view of a packet command. | |
93 | */ | |
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 */ | |
108 | } idefloppy_pc_t; | |
109 | ||
110 | /* | |
111 | * Packet command flag bits. | |
112 | */ | |
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 */ | |
118 | ||
119 | #define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */ | |
120 | ||
121 | /* | |
122 | * Removable Block Access Capabilities Page | |
123 | */ | |
124 | typedef struct { | |
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 */ | |
133 | #else | |
134 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
135 | #endif | |
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 */ | |
153 | #else | |
154 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
155 | #endif | |
156 | u8 reserved[8]; | |
157 | } idefloppy_capabilities_page_t; | |
158 | ||
159 | /* | |
160 | * Flexible disk page. | |
161 | */ | |
162 | typedef struct { | |
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 */ | |
171 | #else | |
172 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
173 | #endif | |
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 */ | |
179 | u8 reserved10[10]; | |
180 | u8 motor_delay; /* Motor off delay */ | |
181 | u8 reserved21[7]; | |
182 | u16 rpm; /* Rotations per minute */ | |
183 | u8 reserved30[2]; | |
184 | } idefloppy_flexible_disk_page_t; | |
185 | ||
186 | /* | |
187 | * Format capacity | |
188 | */ | |
189 | typedef struct { | |
190 | u8 reserved[3]; | |
191 | u8 length; /* Length of the following descriptors in bytes */ | |
192 | } idefloppy_capacity_header_t; | |
193 | ||
194 | typedef struct { | |
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 */ | |
202 | #else | |
203 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
204 | #endif | |
205 | u8 length_msb; /* Block Length (MSB)*/ | |
206 | u16 length; /* Block Length */ | |
207 | } idefloppy_capacity_descriptor_t; | |
208 | ||
209 | #define CAPACITY_INVALID 0x00 | |
210 | #define CAPACITY_UNFORMATTED 0x01 | |
211 | #define CAPACITY_CURRENT 0x02 | |
212 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
213 | ||
214 | /* | |
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. | |
218 | */ | |
219 | typedef struct ide_floppy_obj { | |
220 | ide_drive_t *drive; | |
221 | ide_driver_t *driver; | |
222 | struct gendisk *disk; | |
223 | struct kref kref; | |
c94964a4 | 224 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
225 | |
226 | /* Current packet command */ | |
227 | idefloppy_pc_t *pc; | |
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 */ | |
233 | int pc_stack_index; | |
234 | struct request rq_stack[IDEFLOPPY_PC_STACK]; | |
235 | /* We implement a circular array */ | |
236 | int rq_stack_index; | |
237 | ||
238 | /* | |
239 | * Last error information | |
240 | */ | |
241 | u8 sense_key, asc, ascq; | |
242 | /* delay this long before sending packet command */ | |
243 | u8 ticks; | |
244 | int progress_indication; | |
245 | ||
246 | /* | |
247 | * Device information | |
248 | */ | |
249 | /* Current format */ | |
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; | |
255 | /* Write protect */ | |
256 | int wp; | |
257 | /* Supports format progress report */ | |
258 | int srfp; | |
259 | /* Status/Action flags */ | |
260 | unsigned long flags; | |
261 | } idefloppy_floppy_t; | |
262 | ||
c40d3d38 | 263 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 LT |
264 | |
265 | /* | |
266 | * Floppy flag bits values. | |
267 | */ | |
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 */ | |
274 | ||
1da177e4 LT |
275 | /* |
276 | * Defines for the mode sense command | |
277 | */ | |
278 | #define MODE_SENSE_CURRENT 0x00 | |
279 | #define MODE_SENSE_CHANGEABLE 0x01 | |
280 | #define MODE_SENSE_DEFAULT 0x02 | |
281 | #define MODE_SENSE_SAVED 0x03 | |
282 | ||
283 | /* | |
284 | * IOCTLs used in low-level formatting. | |
285 | */ | |
286 | ||
287 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 | |
288 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 | |
289 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 | |
290 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 | |
291 | ||
1da177e4 LT |
292 | /* |
293 | * Error codes which are returned in rq->errors to the higher part | |
294 | * of the driver. | |
295 | */ | |
296 | #define IDEFLOPPY_ERROR_GENERAL 101 | |
297 | ||
298 | /* | |
299 | * The following is used to format the general configuration word of | |
300 | * the ATAPI IDENTIFY DEVICE command. | |
301 | */ | |
302 | struct idefloppy_id_gcw { | |
303 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
304 | unsigned packet_size :2; /* Packet Size */ | |
305 | unsigned reserved234 :3; /* Reserved */ | |
306 | unsigned drq_type :2; /* Command packet DRQ type */ | |
307 | unsigned removable :1; /* Removable media */ | |
308 | unsigned device_type :5; /* Device type */ | |
309 | unsigned reserved13 :1; /* Reserved */ | |
310 | unsigned protocol :2; /* Protocol type */ | |
311 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
312 | unsigned protocol :2; /* Protocol type */ | |
313 | unsigned reserved13 :1; /* Reserved */ | |
314 | unsigned device_type :5; /* Device type */ | |
315 | unsigned removable :1; /* Removable media */ | |
316 | unsigned drq_type :2; /* Command packet DRQ type */ | |
317 | unsigned reserved234 :3; /* Reserved */ | |
318 | unsigned packet_size :2; /* Packet Size */ | |
319 | #else | |
320 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
321 | #endif | |
322 | }; | |
323 | ||
324 | /* | |
325 | * INQUIRY packet command - Data Format | |
326 | */ | |
327 | typedef struct { | |
328 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
329 | unsigned device_type :5; /* Peripheral Device Type */ | |
330 | unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */ | |
331 | unsigned reserved1_6t0 :7; /* Reserved */ | |
332 | unsigned rmb :1; /* Removable Medium Bit */ | |
333 | unsigned ansi_version :3; /* ANSI Version */ | |
334 | unsigned ecma_version :3; /* ECMA Version */ | |
335 | unsigned iso_version :2; /* ISO Version */ | |
336 | unsigned response_format :4; /* Response Data Format */ | |
337 | unsigned reserved3_45 :2; /* Reserved */ | |
338 | unsigned reserved3_6 :1; /* TrmIOP - Reserved */ | |
339 | unsigned reserved3_7 :1; /* AENC - Reserved */ | |
340 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
341 | unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */ | |
342 | unsigned device_type :5; /* Peripheral Device Type */ | |
343 | unsigned rmb :1; /* Removable Medium Bit */ | |
344 | unsigned reserved1_6t0 :7; /* Reserved */ | |
345 | unsigned iso_version :2; /* ISO Version */ | |
346 | unsigned ecma_version :3; /* ECMA Version */ | |
347 | unsigned ansi_version :3; /* ANSI Version */ | |
348 | unsigned reserved3_7 :1; /* AENC - Reserved */ | |
349 | unsigned reserved3_6 :1; /* TrmIOP - Reserved */ | |
350 | unsigned reserved3_45 :2; /* Reserved */ | |
351 | unsigned response_format :4; /* Response Data Format */ | |
352 | #else | |
353 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
354 | #endif | |
355 | u8 additional_length; /* Additional Length (total_length-4) */ | |
356 | u8 rsv5, rsv6, rsv7; /* Reserved */ | |
357 | u8 vendor_id[8]; /* Vendor Identification */ | |
358 | u8 product_id[16]; /* Product Identification */ | |
359 | u8 revision_level[4]; /* Revision Level */ | |
360 | u8 vendor_specific[20]; /* Vendor Specific - Optional */ | |
361 | u8 reserved56t95[40]; /* Reserved - Optional */ | |
362 | /* Additional information may be returned */ | |
363 | } idefloppy_inquiry_result_t; | |
364 | ||
365 | /* | |
366 | * REQUEST SENSE packet command result - Data Format. | |
367 | */ | |
368 | typedef struct { | |
369 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
370 | unsigned error_code :7; /* Current error (0x70) */ | |
371 | unsigned valid :1; /* The information field conforms to SFF-8070i */ | |
372 | u8 reserved1 :8; /* Reserved */ | |
373 | unsigned sense_key :4; /* Sense Key */ | |
374 | unsigned reserved2_4 :1; /* Reserved */ | |
375 | unsigned ili :1; /* Incorrect Length Indicator */ | |
376 | unsigned reserved2_67 :2; | |
377 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
378 | unsigned valid :1; /* The information field conforms to SFF-8070i */ | |
379 | unsigned error_code :7; /* Current error (0x70) */ | |
380 | u8 reserved1 :8; /* Reserved */ | |
381 | unsigned reserved2_67 :2; | |
382 | unsigned ili :1; /* Incorrect Length Indicator */ | |
383 | unsigned reserved2_4 :1; /* Reserved */ | |
384 | unsigned sense_key :4; /* Sense Key */ | |
385 | #else | |
386 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
387 | #endif | |
388 | u32 information __attribute__ ((packed)); | |
389 | u8 asl; /* Additional sense length (n-7) */ | |
390 | u32 command_specific; /* Additional command specific information */ | |
391 | u8 asc; /* Additional Sense Code */ | |
392 | u8 ascq; /* Additional Sense Code Qualifier */ | |
393 | u8 replaceable_unit_code; /* Field Replaceable Unit Code */ | |
394 | u8 sksv[3]; | |
395 | u8 pad[2]; /* Padding to 20 bytes */ | |
396 | } idefloppy_request_sense_result_t; | |
397 | ||
398 | /* | |
399 | * Pages of the SELECT SENSE / MODE SENSE packet commands. | |
400 | */ | |
401 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b | |
402 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 | |
403 | ||
404 | /* | |
405 | * Mode Parameter Header for the MODE SENSE packet command | |
406 | */ | |
407 | typedef struct { | |
408 | u16 mode_data_length; /* Length of the following data transfer */ | |
409 | u8 medium_type; /* Medium Type */ | |
410 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
411 | unsigned reserved3 :7; | |
412 | unsigned wp :1; /* Write protect */ | |
413 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
414 | unsigned wp :1; /* Write protect */ | |
415 | unsigned reserved3 :7; | |
416 | #else | |
417 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
418 | #endif | |
419 | u8 reserved[4]; | |
420 | } idefloppy_mode_parameter_header_t; | |
421 | ||
cf8b8975 | 422 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
423 | |
424 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
425 | ||
426 | #define ide_floppy_g(disk) \ | |
427 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
428 | ||
429 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) | |
430 | { | |
431 | struct ide_floppy_obj *floppy = NULL; | |
432 | ||
cf8b8975 | 433 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 LT |
434 | floppy = ide_floppy_g(disk); |
435 | if (floppy) | |
436 | kref_get(&floppy->kref); | |
cf8b8975 | 437 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
438 | return floppy; |
439 | } | |
440 | ||
441 | static void ide_floppy_release(struct kref *); | |
442 | ||
443 | static void ide_floppy_put(struct ide_floppy_obj *floppy) | |
444 | { | |
cf8b8975 | 445 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 | 446 | kref_put(&floppy->kref, ide_floppy_release); |
cf8b8975 | 447 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
448 | } |
449 | ||
450 | /* | |
451 | * Too bad. The drive wants to send us data which we are not ready to accept. | |
452 | * Just throw it away. | |
453 | */ | |
454 | static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount) | |
455 | { | |
456 | while (bcount--) | |
457 | (void) HWIF(drive)->INB(IDE_DATA_REG); | |
458 | } | |
459 | ||
460 | #if IDEFLOPPY_DEBUG_BUGS | |
461 | static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount) | |
462 | { | |
463 | while (bcount--) | |
464 | HWIF(drive)->OUTB(0, IDE_DATA_REG); | |
465 | } | |
466 | #endif /* IDEFLOPPY_DEBUG_BUGS */ | |
467 | ||
468 | ||
469 | /* | |
470 | * idefloppy_do_end_request is used to finish servicing a request. | |
471 | * | |
472 | * For read/write requests, we will call ide_end_request to pass to the | |
473 | * next buffer. | |
474 | */ | |
475 | static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs) | |
476 | { | |
477 | idefloppy_floppy_t *floppy = drive->driver_data; | |
478 | struct request *rq = HWGROUP(drive)->rq; | |
479 | int error; | |
480 | ||
481 | debug_log(KERN_INFO "Reached idefloppy_end_request\n"); | |
482 | ||
483 | switch (uptodate) { | |
484 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; | |
485 | case 1: error = 0; break; | |
486 | default: error = uptodate; | |
487 | } | |
488 | if (error) | |
489 | floppy->failed_pc = NULL; | |
490 | /* Why does this happen? */ | |
491 | if (!rq) | |
492 | return 0; | |
4aff5e23 | 493 | if (!blk_special_request(rq)) { |
1da177e4 LT |
494 | /* our real local end request function */ |
495 | ide_end_request(drive, uptodate, nsecs); | |
496 | return 0; | |
497 | } | |
498 | rq->errors = error; | |
499 | /* fixme: need to move this local also */ | |
500 | ide_end_drive_cmd(drive, 0, 0); | |
501 | return 0; | |
502 | } | |
503 | ||
504 | static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) | |
505 | { | |
506 | struct request *rq = pc->rq; | |
507 | struct bio_vec *bvec; | |
5705f702 | 508 | struct req_iterator iter; |
1da177e4 LT |
509 | unsigned long flags; |
510 | char *data; | |
5705f702 | 511 | int count, done = 0; |
1da177e4 | 512 | |
5705f702 | 513 | rq_for_each_segment(bvec, rq, iter) { |
6c92e699 JA |
514 | if (!bcount) |
515 | break; | |
1da177e4 | 516 | |
6c92e699 | 517 | count = min(bvec->bv_len, bcount); |
1da177e4 | 518 | |
6c92e699 JA |
519 | data = bvec_kmap_irq(bvec, &flags); |
520 | drive->hwif->atapi_input_bytes(drive, data, count); | |
521 | bvec_kunmap_irq(data, &flags); | |
1da177e4 | 522 | |
6c92e699 JA |
523 | bcount -= count; |
524 | pc->b_count += count; | |
525 | done += count; | |
1da177e4 LT |
526 | } |
527 | ||
528 | idefloppy_do_end_request(drive, 1, done >> 9); | |
529 | ||
530 | if (bcount) { | |
531 | printk(KERN_ERR "%s: leftover data in idefloppy_input_buffers, bcount == %d\n", drive->name, bcount); | |
532 | idefloppy_discard_data(drive, bcount); | |
533 | } | |
534 | } | |
535 | ||
536 | static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) | |
537 | { | |
538 | struct request *rq = pc->rq; | |
5705f702 | 539 | struct req_iterator iter; |
1da177e4 LT |
540 | struct bio_vec *bvec; |
541 | unsigned long flags; | |
5705f702 | 542 | int count, done = 0; |
1da177e4 LT |
543 | char *data; |
544 | ||
5705f702 | 545 | rq_for_each_segment(bvec, rq, iter) { |
6c92e699 JA |
546 | if (!bcount) |
547 | break; | |
1da177e4 | 548 | |
6c92e699 | 549 | count = min(bvec->bv_len, bcount); |
1da177e4 | 550 | |
6c92e699 JA |
551 | data = bvec_kmap_irq(bvec, &flags); |
552 | drive->hwif->atapi_output_bytes(drive, data, count); | |
553 | bvec_kunmap_irq(data, &flags); | |
1da177e4 | 554 | |
6c92e699 JA |
555 | bcount -= count; |
556 | pc->b_count += count; | |
557 | done += count; | |
1da177e4 LT |
558 | } |
559 | ||
560 | idefloppy_do_end_request(drive, 1, done >> 9); | |
561 | ||
c7ea4b31 | 562 | #if IDEFLOPPY_DEBUG_BUGS |
1da177e4 LT |
563 | if (bcount) { |
564 | printk(KERN_ERR "%s: leftover data in idefloppy_output_buffers, bcount == %d\n", drive->name, bcount); | |
565 | idefloppy_write_zeros(drive, bcount); | |
566 | } | |
c7ea4b31 | 567 | #endif |
1da177e4 LT |
568 | } |
569 | ||
570 | static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc) | |
571 | { | |
572 | struct request *rq = pc->rq; | |
573 | struct bio *bio = rq->bio; | |
574 | ||
575 | while ((bio = rq->bio) != NULL) | |
576 | idefloppy_do_end_request(drive, 1, 0); | |
577 | } | |
578 | ||
579 | /* | |
580 | * idefloppy_queue_pc_head generates a new packet command request in front | |
581 | * of the request queue, before the current request, so that it will be | |
582 | * processed immediately, on the next pass through the driver. | |
583 | */ | |
584 | static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq) | |
585 | { | |
586 | struct ide_floppy_obj *floppy = drive->driver_data; | |
587 | ||
588 | ide_init_drive_cmd(rq); | |
589 | rq->buffer = (char *) pc; | |
4aff5e23 | 590 | rq->cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
591 | rq->rq_disk = floppy->disk; |
592 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
593 | } | |
594 | ||
595 | static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive) | |
596 | { | |
597 | idefloppy_floppy_t *floppy = drive->driver_data; | |
598 | ||
599 | if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK) | |
600 | floppy->pc_stack_index=0; | |
601 | return (&floppy->pc_stack[floppy->pc_stack_index++]); | |
602 | } | |
603 | ||
604 | static struct request *idefloppy_next_rq_storage (ide_drive_t *drive) | |
605 | { | |
606 | idefloppy_floppy_t *floppy = drive->driver_data; | |
607 | ||
608 | if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) | |
609 | floppy->rq_stack_index = 0; | |
610 | return (&floppy->rq_stack[floppy->rq_stack_index++]); | |
611 | } | |
612 | ||
613 | /* | |
614 | * idefloppy_analyze_error is called on each failed packet command retry | |
615 | * to analyze the request sense. | |
616 | */ | |
617 | static void idefloppy_analyze_error (ide_drive_t *drive,idefloppy_request_sense_result_t *result) | |
618 | { | |
619 | idefloppy_floppy_t *floppy = drive->driver_data; | |
620 | ||
621 | floppy->sense_key = result->sense_key; | |
622 | floppy->asc = result->asc; | |
623 | floppy->ascq = result->ascq; | |
624 | floppy->progress_indication = result->sksv[0] & 0x80 ? | |
625 | (u16)get_unaligned((u16 *)(result->sksv+1)):0x10000; | |
626 | if (floppy->failed_pc) | |
627 | debug_log(KERN_INFO "ide-floppy: pc = %x, sense key = %x, " | |
628 | "asc = %x, ascq = %x\n", floppy->failed_pc->c[0], | |
629 | result->sense_key, result->asc, result->ascq); | |
630 | else | |
631 | debug_log(KERN_INFO "ide-floppy: sense key = %x, asc = %x, " | |
632 | "ascq = %x\n", result->sense_key, | |
633 | result->asc, result->ascq); | |
634 | } | |
635 | ||
636 | static void idefloppy_request_sense_callback (ide_drive_t *drive) | |
637 | { | |
638 | idefloppy_floppy_t *floppy = drive->driver_data; | |
639 | ||
640 | debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); | |
641 | ||
642 | if (!floppy->pc->error) { | |
643 | idefloppy_analyze_error(drive,(idefloppy_request_sense_result_t *) floppy->pc->buffer); | |
644 | idefloppy_do_end_request(drive, 1, 0); | |
645 | } else { | |
646 | printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting request!\n"); | |
647 | idefloppy_do_end_request(drive, 0, 0); | |
648 | } | |
649 | } | |
650 | ||
651 | /* | |
652 | * General packet command callback function. | |
653 | */ | |
654 | static void idefloppy_pc_callback (ide_drive_t *drive) | |
655 | { | |
656 | idefloppy_floppy_t *floppy = drive->driver_data; | |
657 | ||
658 | debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); | |
659 | ||
660 | idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0); | |
661 | } | |
662 | ||
663 | /* | |
664 | * idefloppy_init_pc initializes a packet command. | |
665 | */ | |
666 | static void idefloppy_init_pc (idefloppy_pc_t *pc) | |
667 | { | |
668 | memset(pc->c, 0, 12); | |
669 | pc->retries = 0; | |
670 | pc->flags = 0; | |
671 | pc->request_transfer = 0; | |
672 | pc->buffer = pc->pc_buffer; | |
673 | pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE; | |
674 | pc->callback = &idefloppy_pc_callback; | |
675 | } | |
676 | ||
677 | static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc) | |
678 | { | |
30d67099 BP |
679 | idefloppy_init_pc(pc); |
680 | pc->c[0] = GPCMD_REQUEST_SENSE; | |
1da177e4 LT |
681 | pc->c[4] = 255; |
682 | pc->request_transfer = 18; | |
683 | pc->callback = &idefloppy_request_sense_callback; | |
684 | } | |
685 | ||
686 | /* | |
687 | * idefloppy_retry_pc is called when an error was detected during the | |
688 | * last packet command. We queue a request sense packet command in | |
689 | * the head of the request list. | |
690 | */ | |
691 | static void idefloppy_retry_pc (ide_drive_t *drive) | |
692 | { | |
693 | idefloppy_pc_t *pc; | |
694 | struct request *rq; | |
1da177e4 | 695 | |
0e38a66a | 696 | (void)drive->hwif->INB(IDE_ERROR_REG); |
1da177e4 LT |
697 | pc = idefloppy_next_pc_storage(drive); |
698 | rq = idefloppy_next_rq_storage(drive); | |
699 | idefloppy_create_request_sense_cmd(pc); | |
700 | idefloppy_queue_pc_head(drive, pc, rq); | |
701 | } | |
702 | ||
703 | /* | |
704 | * idefloppy_pc_intr is the usual interrupt handler which will be called | |
705 | * during a packet command. | |
706 | */ | |
707 | static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive) | |
708 | { | |
709 | idefloppy_floppy_t *floppy = drive->driver_data; | |
790d1239 | 710 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
711 | idefloppy_pc_t *pc = floppy->pc; |
712 | struct request *rq = pc->rq; | |
713 | unsigned int temp; | |
790d1239 | 714 | u16 bcount; |
8e7657ae | 715 | u8 stat, ireason; |
1da177e4 LT |
716 | |
717 | debug_log(KERN_INFO "ide-floppy: Reached %s interrupt handler\n", | |
718 | __FUNCTION__); | |
719 | ||
720 | if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { | |
721 | if (HWIF(drive)->ide_dma_end(drive)) { | |
722 | set_bit(PC_DMA_ERROR, &pc->flags); | |
723 | } else { | |
724 | pc->actually_transferred = pc->request_transfer; | |
725 | idefloppy_update_buffers(drive, pc); | |
726 | } | |
727 | debug_log(KERN_INFO "ide-floppy: DMA finished\n"); | |
728 | } | |
729 | ||
730 | /* Clear the interrupt */ | |
22c525b9 | 731 | stat = drive->hwif->INB(IDE_STATUS_REG); |
1da177e4 | 732 | |
22c525b9 | 733 | if ((stat & DRQ_STAT) == 0) { /* No more interrupts */ |
1da177e4 LT |
734 | debug_log(KERN_INFO "Packet command completed, %d bytes " |
735 | "transferred\n", pc->actually_transferred); | |
736 | clear_bit(PC_DMA_IN_PROGRESS, &pc->flags); | |
737 | ||
366c7f55 | 738 | local_irq_enable_in_hardirq(); |
1da177e4 | 739 | |
22c525b9 | 740 | if ((stat & ERR_STAT) || test_bit(PC_DMA_ERROR, &pc->flags)) { |
1da177e4 LT |
741 | /* Error detected */ |
742 | debug_log(KERN_INFO "ide-floppy: %s: I/O error\n", | |
743 | drive->name); | |
744 | rq->errors++; | |
30d67099 | 745 | if (pc->c[0] == GPCMD_REQUEST_SENSE) { |
1da177e4 LT |
746 | printk(KERN_ERR "ide-floppy: I/O error in " |
747 | "request sense command\n"); | |
748 | return ide_do_reset(drive); | |
749 | } | |
750 | /* Retry operation */ | |
751 | idefloppy_retry_pc(drive); | |
752 | /* queued, but not started */ | |
753 | return ide_stopped; | |
754 | } | |
755 | pc->error = 0; | |
756 | if (floppy->failed_pc == pc) | |
757 | floppy->failed_pc = NULL; | |
758 | /* Command finished - Call the callback function */ | |
759 | pc->callback(drive); | |
760 | return ide_stopped; | |
761 | } | |
762 | ||
763 | if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { | |
764 | printk(KERN_ERR "ide-floppy: The floppy wants to issue " | |
765 | "more interrupts in DMA mode\n"); | |
7469aaf6 | 766 | ide_dma_off(drive); |
1da177e4 LT |
767 | return ide_do_reset(drive); |
768 | } | |
769 | ||
770 | /* Get the number of bytes to transfer */ | |
790d1239 BZ |
771 | bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) | |
772 | hwif->INB(IDE_BCOUNTL_REG); | |
1da177e4 | 773 | /* on this interrupt */ |
8e7657ae | 774 | ireason = hwif->INB(IDE_IREASON_REG); |
1da177e4 | 775 | |
8e7657ae | 776 | if (ireason & CD) { |
1da177e4 LT |
777 | printk(KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n"); |
778 | return ide_do_reset(drive); | |
779 | } | |
8e7657ae | 780 | if (((ireason & IO) == IO) == test_bit(PC_WRITING, &pc->flags)) { |
1da177e4 LT |
781 | /* Hopefully, we will never get here */ |
782 | printk(KERN_ERR "ide-floppy: We wanted to %s, ", | |
8e7657ae | 783 | (ireason & IO) ? "Write" : "Read"); |
1da177e4 | 784 | printk(KERN_ERR "but the floppy wants us to %s !\n", |
8e7657ae | 785 | (ireason & IO) ? "Read" : "Write"); |
1da177e4 LT |
786 | return ide_do_reset(drive); |
787 | } | |
788 | if (!test_bit(PC_WRITING, &pc->flags)) { | |
789 | /* Reading - Check that we have enough space */ | |
790d1239 | 790 | temp = pc->actually_transferred + bcount; |
1da177e4 LT |
791 | if (temp > pc->request_transfer) { |
792 | if (temp > pc->buffer_size) { | |
793 | printk(KERN_ERR "ide-floppy: The floppy wants " | |
794 | "to send us more data than expected " | |
795 | "- discarding data\n"); | |
790d1239 | 796 | idefloppy_discard_data(drive, bcount); |
125e1874 | 797 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
798 | ide_set_handler(drive, |
799 | &idefloppy_pc_intr, | |
800 | IDEFLOPPY_WAIT_CMD, | |
801 | NULL); | |
802 | return ide_started; | |
803 | } | |
804 | debug_log(KERN_NOTICE "ide-floppy: The floppy wants to " | |
805 | "send us more data than expected - " | |
806 | "allowing transfer\n"); | |
807 | } | |
808 | } | |
809 | if (test_bit(PC_WRITING, &pc->flags)) { | |
810 | if (pc->buffer != NULL) | |
811 | /* Write the current buffer */ | |
790d1239 BZ |
812 | hwif->atapi_output_bytes(drive, pc->current_position, |
813 | bcount); | |
1da177e4 | 814 | else |
790d1239 | 815 | idefloppy_output_buffers(drive, pc, bcount); |
1da177e4 LT |
816 | } else { |
817 | if (pc->buffer != NULL) | |
818 | /* Read the current buffer */ | |
790d1239 BZ |
819 | hwif->atapi_input_bytes(drive, pc->current_position, |
820 | bcount); | |
1da177e4 | 821 | else |
790d1239 | 822 | idefloppy_input_buffers(drive, pc, bcount); |
1da177e4 LT |
823 | } |
824 | /* Update the current position */ | |
790d1239 BZ |
825 | pc->actually_transferred += bcount; |
826 | pc->current_position += bcount; | |
1da177e4 | 827 | |
125e1874 | 828 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
829 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); /* And set the interrupt handler again */ |
830 | return ide_started; | |
831 | } | |
832 | ||
833 | /* | |
834 | * This is the original routine that did the packet transfer. | |
835 | * It fails at high speeds on the Iomega ZIP drive, so there's a slower version | |
836 | * for that drive below. The algorithm is chosen based on drive type | |
837 | */ | |
838 | static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive) | |
839 | { | |
840 | ide_startstop_t startstop; | |
841 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e7657ae | 842 | u8 ireason; |
1da177e4 LT |
843 | |
844 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
845 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
846 | "initiated yet DRQ isn't asserted\n"); | |
847 | return startstop; | |
848 | } | |
8e7657ae BZ |
849 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
850 | if ((ireason & CD) == 0 || (ireason & IO)) { | |
1da177e4 LT |
851 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while " |
852 | "issuing a packet command\n"); | |
853 | return ide_do_reset(drive); | |
854 | } | |
125e1874 | 855 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
856 | /* Set the interrupt routine */ |
857 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
858 | /* Send the actual packet */ | |
859 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
860 | return ide_started; | |
861 | } | |
862 | ||
863 | ||
864 | /* | |
865 | * What we have here is a classic case of a top half / bottom half | |
866 | * interrupt service routine. In interrupt mode, the device sends | |
867 | * an interrupt to signal it's ready to receive a packet. However, | |
868 | * we need to delay about 2-3 ticks before issuing the packet or we | |
869 | * gets in trouble. | |
870 | * | |
871 | * So, follow carefully. transfer_pc1 is called as an interrupt (or | |
872 | * directly). In either case, when the device says it's ready for a | |
873 | * packet, we schedule the packet transfer to occur about 2-3 ticks | |
874 | * later in transfer_pc2. | |
875 | */ | |
876 | static int idefloppy_transfer_pc2 (ide_drive_t *drive) | |
877 | { | |
878 | idefloppy_floppy_t *floppy = drive->driver_data; | |
879 | ||
880 | /* Send the actual packet */ | |
881 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
882 | /* Timeout for the packet command */ | |
883 | return IDEFLOPPY_WAIT_CMD; | |
884 | } | |
885 | ||
886 | static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive) | |
887 | { | |
888 | idefloppy_floppy_t *floppy = drive->driver_data; | |
889 | ide_startstop_t startstop; | |
8e7657ae | 890 | u8 ireason; |
1da177e4 LT |
891 | |
892 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
893 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
894 | "initiated yet DRQ isn't asserted\n"); | |
895 | return startstop; | |
896 | } | |
8e7657ae BZ |
897 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
898 | if ((ireason & CD) == 0 || (ireason & IO)) { | |
1da177e4 LT |
899 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) " |
900 | "while issuing a packet command\n"); | |
901 | return ide_do_reset(drive); | |
902 | } | |
903 | /* | |
904 | * The following delay solves a problem with ATAPI Zip 100 drives | |
905 | * where the Busy flag was apparently being deasserted before the | |
906 | * unit was ready to receive data. This was happening on a | |
907 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
908 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
909 | * used until after the packet is moved in about 50 msec. | |
910 | */ | |
125e1874 | 911 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
912 | ide_set_handler(drive, |
913 | &idefloppy_pc_intr, /* service routine for packet command */ | |
914 | floppy->ticks, /* wait this long before "failing" */ | |
915 | &idefloppy_transfer_pc2); /* fail == transfer_pc2 */ | |
916 | return ide_started; | |
917 | } | |
918 | ||
919 | /** | |
920 | * idefloppy_should_report_error() | |
921 | * | |
922 | * Supresses error messages resulting from Medium not present | |
923 | */ | |
924 | static inline int idefloppy_should_report_error(idefloppy_floppy_t *floppy) | |
925 | { | |
926 | if (floppy->sense_key == 0x02 && | |
927 | floppy->asc == 0x3a && | |
928 | floppy->ascq == 0x00) | |
929 | return 0; | |
930 | return 1; | |
931 | } | |
932 | ||
933 | /* | |
934 | * Issue a packet command | |
935 | */ | |
936 | static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc) | |
937 | { | |
938 | idefloppy_floppy_t *floppy = drive->driver_data; | |
939 | ide_hwif_t *hwif = drive->hwif; | |
1da177e4 | 940 | ide_handler_t *pkt_xfer_routine; |
790d1239 | 941 | u16 bcount; |
e5f9f5a8 | 942 | u8 dma; |
1da177e4 | 943 | |
1da177e4 | 944 | if (floppy->failed_pc == NULL && |
30d67099 | 945 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 LT |
946 | floppy->failed_pc = pc; |
947 | /* Set the current packet command */ | |
948 | floppy->pc = pc; | |
949 | ||
950 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES || | |
951 | test_bit(PC_ABORT, &pc->flags)) { | |
952 | /* | |
953 | * We will "abort" retrying a packet command in case | |
954 | * a legitimate error code was received. | |
955 | */ | |
956 | if (!test_bit(PC_ABORT, &pc->flags)) { | |
957 | if (!test_bit(PC_SUPPRESS_ERROR, &pc->flags)) { | |
958 | if (idefloppy_should_report_error(floppy)) | |
959 | printk(KERN_ERR "ide-floppy: %s: I/O error, " | |
960 | "pc = %2x, key = %2x, " | |
961 | "asc = %2x, ascq = %2x\n", | |
962 | drive->name, pc->c[0], | |
963 | floppy->sense_key, | |
964 | floppy->asc, floppy->ascq); | |
965 | } | |
966 | /* Giving up */ | |
967 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
968 | } | |
969 | floppy->failed_pc = NULL; | |
970 | pc->callback(drive); | |
971 | return ide_stopped; | |
972 | } | |
973 | ||
974 | debug_log(KERN_INFO "Retry number - %d\n",pc->retries); | |
975 | ||
976 | pc->retries++; | |
977 | /* We haven't transferred any data yet */ | |
978 | pc->actually_transferred = 0; | |
979 | pc->current_position = pc->buffer; | |
790d1239 | 980 | bcount = min(pc->request_transfer, 63 * 1024); |
1da177e4 | 981 | |
7469aaf6 BZ |
982 | if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) |
983 | ide_dma_off(drive); | |
984 | ||
e5f9f5a8 | 985 | dma = 0; |
1da177e4 LT |
986 | |
987 | if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma) | |
e5f9f5a8 | 988 | dma = !hwif->dma_setup(drive); |
1da177e4 | 989 | |
2fc57388 BZ |
990 | ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK | |
991 | IDE_TFLAG_OUT_DEVICE, bcount, dma); | |
1da177e4 | 992 | |
e5f9f5a8 | 993 | if (dma) { /* Begin DMA, if necessary */ |
1da177e4 LT |
994 | set_bit(PC_DMA_IN_PROGRESS, &pc->flags); |
995 | hwif->dma_start(drive); | |
996 | } | |
997 | ||
998 | /* Can we transfer the packet when we get the interrupt or wait? */ | |
999 | if (test_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) { | |
1000 | /* wait */ | |
1001 | pkt_xfer_routine = &idefloppy_transfer_pc1; | |
1002 | } else { | |
1003 | /* immediate */ | |
1004 | pkt_xfer_routine = &idefloppy_transfer_pc; | |
1005 | } | |
1006 | ||
1007 | if (test_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) { | |
1008 | /* Issue the packet command */ | |
1009 | ide_execute_command(drive, WIN_PACKETCMD, | |
1010 | pkt_xfer_routine, | |
1011 | IDEFLOPPY_WAIT_CMD, | |
1012 | NULL); | |
1013 | return ide_started; | |
1014 | } else { | |
1015 | /* Issue the packet command */ | |
1016 | HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG); | |
1017 | return (*pkt_xfer_routine) (drive); | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | static void idefloppy_rw_callback (ide_drive_t *drive) | |
1022 | { | |
1023 | debug_log(KERN_INFO "ide-floppy: Reached idefloppy_rw_callback\n"); | |
1024 | ||
1025 | idefloppy_do_end_request(drive, 1, 0); | |
1026 | return; | |
1027 | } | |
1028 | ||
1029 | static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent) | |
1030 | { | |
1031 | debug_log(KERN_INFO "ide-floppy: creating prevent removal command, " | |
1032 | "prevent = %d\n", prevent); | |
1033 | ||
1034 | idefloppy_init_pc(pc); | |
30d67099 | 1035 | pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
1da177e4 LT |
1036 | pc->c[4] = prevent; |
1037 | } | |
1038 | ||
1039 | static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc) | |
1040 | { | |
1041 | idefloppy_init_pc(pc); | |
30d67099 | 1042 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
1043 | pc->c[7] = 255; |
1044 | pc->c[8] = 255; | |
1045 | pc->request_transfer = 255; | |
1046 | } | |
1047 | ||
1048 | static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l, | |
1049 | int flags) | |
1050 | { | |
1051 | idefloppy_init_pc(pc); | |
30d67099 | 1052 | pc->c[0] = GPCMD_FORMAT_UNIT; |
1da177e4 LT |
1053 | pc->c[1] = 0x17; |
1054 | ||
1055 | memset(pc->buffer, 0, 12); | |
1056 | pc->buffer[1] = 0xA2; | |
1057 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ | |
1058 | ||
1059 | if (flags & 1) /* Verify bit on... */ | |
1060 | pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */ | |
1061 | pc->buffer[3] = 8; | |
1062 | ||
8f622430 BP |
1063 | put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buffer[4])); |
1064 | put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buffer[8])); | |
1da177e4 LT |
1065 | pc->buffer_size=12; |
1066 | set_bit(PC_WRITING, &pc->flags); | |
1067 | } | |
1068 | ||
1069 | /* | |
1070 | * A mode sense command is used to "sense" floppy parameters. | |
1071 | */ | |
1072 | static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type) | |
1073 | { | |
1074 | u16 length = sizeof(idefloppy_mode_parameter_header_t); | |
1075 | ||
1076 | idefloppy_init_pc(pc); | |
30d67099 | 1077 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 LT |
1078 | pc->c[1] = 0; |
1079 | pc->c[2] = page_code + (type << 6); | |
1080 | ||
1081 | switch (page_code) { | |
1082 | case IDEFLOPPY_CAPABILITIES_PAGE: | |
1083 | length += 12; | |
1084 | break; | |
1085 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
1086 | length += 32; | |
1087 | break; | |
1088 | default: | |
1089 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1090 | "in create_mode_sense_cmd\n"); | |
1091 | } | |
8f622430 | 1092 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
1da177e4 LT |
1093 | pc->request_transfer = length; |
1094 | } | |
1095 | ||
1096 | static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start) | |
1097 | { | |
1098 | idefloppy_init_pc(pc); | |
30d67099 | 1099 | pc->c[0] = GPCMD_START_STOP_UNIT; |
1da177e4 LT |
1100 | pc->c[4] = start; |
1101 | } | |
1102 | ||
1103 | static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc) | |
1104 | { | |
1105 | idefloppy_init_pc(pc); | |
30d67099 | 1106 | pc->c[0] = GPCMD_TEST_UNIT_READY; |
1da177e4 LT |
1107 | } |
1108 | ||
1109 | static void idefloppy_create_rw_cmd (idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq, unsigned long sector) | |
1110 | { | |
1111 | int block = sector / floppy->bs_factor; | |
1112 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
1113 | int cmd = rq_data_dir(rq); | |
1114 | ||
1115 | debug_log("create_rw1%d_cmd: block == %d, blocks == %d\n", | |
1116 | 2 * test_bit (IDEFLOPPY_USE_READ12, &floppy->flags), | |
1117 | block, blocks); | |
1118 | ||
1119 | idefloppy_init_pc(pc); | |
1120 | if (test_bit(IDEFLOPPY_USE_READ12, &floppy->flags)) { | |
30d67099 | 1121 | pc->c[0] = cmd == READ ? GPCMD_READ_12 : GPCMD_WRITE_12; |
8f622430 | 1122 | put_unaligned(cpu_to_be32(blocks), (unsigned int *) &pc->c[6]); |
1da177e4 | 1123 | } else { |
30d67099 | 1124 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
8f622430 | 1125 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); |
1da177e4 | 1126 | } |
8f622430 | 1127 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
1da177e4 LT |
1128 | pc->callback = &idefloppy_rw_callback; |
1129 | pc->rq = rq; | |
1130 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; | |
4aff5e23 | 1131 | if (rq->cmd_flags & REQ_RW) |
1da177e4 LT |
1132 | set_bit(PC_WRITING, &pc->flags); |
1133 | pc->buffer = NULL; | |
1134 | pc->request_transfer = pc->buffer_size = blocks * floppy->block_size; | |
1135 | set_bit(PC_DMA_RECOMMENDED, &pc->flags); | |
1136 | } | |
1137 | ||
3d6392cf | 1138 | static void |
1da177e4 LT |
1139 | idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq) |
1140 | { | |
1da177e4 | 1141 | idefloppy_init_pc(pc); |
3d6392cf | 1142 | pc->callback = &idefloppy_rw_callback; |
1da177e4 | 1143 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf JA |
1144 | pc->rq = rq; |
1145 | pc->b_count = rq->data_len; | |
1146 | if (rq->data_len && rq_data_dir(rq) == WRITE) | |
1147 | set_bit(PC_WRITING, &pc->flags); | |
1148 | pc->buffer = rq->data; | |
1149 | if (rq->bio) | |
1150 | set_bit(PC_DMA_RECOMMENDED, &pc->flags); | |
1151 | ||
1152 | /* | |
1153 | * possibly problematic, doesn't look like ide-floppy correctly | |
1154 | * handled scattered requests if dma fails... | |
1155 | */ | |
1156 | pc->request_transfer = pc->buffer_size = rq->data_len; | |
1da177e4 LT |
1157 | } |
1158 | ||
1159 | /* | |
1160 | * idefloppy_do_request is our request handling function. | |
1161 | */ | |
1162 | static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, sector_t block_s) | |
1163 | { | |
1164 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1165 | idefloppy_pc_t *pc; | |
1166 | unsigned long block = (unsigned long)block_s; | |
1167 | ||
cdd60262 | 1168 | debug_log(KERN_INFO "dev: %s, flags: %lx, errors: %d\n", |
18cddac3 | 1169 | rq->rq_disk ? rq->rq_disk->disk_name : "?", |
1da177e4 LT |
1170 | rq->flags, rq->errors); |
1171 | debug_log(KERN_INFO "sector: %ld, nr_sectors: %ld, " | |
1172 | "current_nr_sectors: %d\n", (long)rq->sector, | |
1173 | rq->nr_sectors, rq->current_nr_sectors); | |
1174 | ||
1175 | if (rq->errors >= ERROR_MAX) { | |
1176 | if (floppy->failed_pc != NULL) { | |
1177 | if (idefloppy_should_report_error(floppy)) | |
1178 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x," | |
1179 | " key = %2x, asc = %2x, ascq = %2x\n", | |
1180 | drive->name, floppy->failed_pc->c[0], | |
1181 | floppy->sense_key, floppy->asc, floppy->ascq); | |
1182 | } | |
1183 | else | |
1184 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
1185 | drive->name); | |
1186 | idefloppy_do_end_request(drive, 0, 0); | |
1187 | return ide_stopped; | |
1188 | } | |
4aff5e23 | 1189 | if (blk_fs_request(rq)) { |
1da177e4 LT |
1190 | if (((long)rq->sector % floppy->bs_factor) || |
1191 | (rq->nr_sectors % floppy->bs_factor)) { | |
1192 | printk("%s: unsupported r/w request size\n", | |
1193 | drive->name); | |
1194 | idefloppy_do_end_request(drive, 0, 0); | |
1195 | return ide_stopped; | |
1196 | } | |
1197 | pc = idefloppy_next_pc_storage(drive); | |
1198 | idefloppy_create_rw_cmd(floppy, pc, rq, block); | |
4aff5e23 | 1199 | } else if (blk_special_request(rq)) { |
1da177e4 | 1200 | pc = (idefloppy_pc_t *) rq->buffer; |
4aff5e23 | 1201 | } else if (blk_pc_request(rq)) { |
1da177e4 | 1202 | pc = idefloppy_next_pc_storage(drive); |
3d6392cf | 1203 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
1204 | } else { |
1205 | blk_dump_rq_flags(rq, | |
1206 | "ide-floppy: unsupported command in queue"); | |
1207 | idefloppy_do_end_request(drive, 0, 0); | |
1208 | return ide_stopped; | |
1209 | } | |
1210 | ||
1211 | pc->rq = rq; | |
1212 | return idefloppy_issue_pc(drive, pc); | |
1213 | } | |
1214 | ||
1215 | /* | |
1216 | * idefloppy_queue_pc_tail adds a special packet command request to the | |
1217 | * tail of the request queue, and waits for it to be serviced. | |
1218 | */ | |
1219 | static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc) | |
1220 | { | |
1221 | struct ide_floppy_obj *floppy = drive->driver_data; | |
1222 | struct request rq; | |
1223 | ||
1224 | ide_init_drive_cmd (&rq); | |
1225 | rq.buffer = (char *) pc; | |
4aff5e23 | 1226 | rq.cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
1227 | rq.rq_disk = floppy->disk; |
1228 | ||
1229 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
1230 | } | |
1231 | ||
1232 | /* | |
1233 | * Look at the flexible disk page parameters. We will ignore the CHS | |
1234 | * capacity parameters and use the LBA parameters instead. | |
1235 | */ | |
1236 | static int idefloppy_get_flexible_disk_page (ide_drive_t *drive) | |
1237 | { | |
1238 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1239 | idefloppy_pc_t pc; | |
1240 | idefloppy_mode_parameter_header_t *header; | |
1241 | idefloppy_flexible_disk_page_t *page; | |
1242 | int capacity, lba_capacity; | |
1243 | ||
1244 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, MODE_SENSE_CURRENT); | |
1245 | if (idefloppy_queue_pc_tail(drive,&pc)) { | |
1246 | printk(KERN_ERR "ide-floppy: Can't get flexible disk " | |
1247 | "page parameters\n"); | |
1248 | return 1; | |
1249 | } | |
1250 | header = (idefloppy_mode_parameter_header_t *) pc.buffer; | |
1251 | floppy->wp = header->wp; | |
1252 | set_disk_ro(floppy->disk, floppy->wp); | |
1253 | page = (idefloppy_flexible_disk_page_t *) (header + 1); | |
1254 | ||
8f622430 BP |
1255 | page->transfer_rate = be16_to_cpu(page->transfer_rate); |
1256 | page->sector_size = be16_to_cpu(page->sector_size); | |
1257 | page->cyls = be16_to_cpu(page->cyls); | |
1258 | page->rpm = be16_to_cpu(page->rpm); | |
1da177e4 LT |
1259 | capacity = page->cyls * page->heads * page->sectors * page->sector_size; |
1260 | if (memcmp (page, &floppy->flexible_disk_page, sizeof (idefloppy_flexible_disk_page_t))) | |
1261 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " | |
1262 | "%d sector size, %d rpm\n", | |
1263 | drive->name, capacity / 1024, page->cyls, | |
1264 | page->heads, page->sectors, | |
1265 | page->transfer_rate / 8, page->sector_size, page->rpm); | |
1266 | ||
1267 | floppy->flexible_disk_page = *page; | |
1268 | drive->bios_cyl = page->cyls; | |
1269 | drive->bios_head = page->heads; | |
1270 | drive->bios_sect = page->sectors; | |
1271 | lba_capacity = floppy->blocks * floppy->block_size; | |
1272 | if (capacity < lba_capacity) { | |
1273 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
1274 | "bytes, but the drive only handles %d\n", | |
1275 | drive->name, lba_capacity, capacity); | |
1276 | floppy->blocks = floppy->block_size ? capacity / floppy->block_size : 0; | |
1277 | } | |
1278 | return 0; | |
1279 | } | |
1280 | ||
1281 | static int idefloppy_get_capability_page(ide_drive_t *drive) | |
1282 | { | |
1283 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1284 | idefloppy_pc_t pc; | |
1285 | idefloppy_mode_parameter_header_t *header; | |
1286 | idefloppy_capabilities_page_t *page; | |
1287 | ||
1288 | floppy->srfp = 0; | |
1289 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, | |
1290 | MODE_SENSE_CURRENT); | |
1291 | ||
1292 | set_bit(PC_SUPPRESS_ERROR, &pc.flags); | |
1293 | if (idefloppy_queue_pc_tail(drive,&pc)) { | |
1294 | return 1; | |
1295 | } | |
1296 | ||
1297 | header = (idefloppy_mode_parameter_header_t *) pc.buffer; | |
1298 | page= (idefloppy_capabilities_page_t *)(header+1); | |
1299 | floppy->srfp = page->srfp; | |
1300 | return (0); | |
1301 | } | |
1302 | ||
1303 | /* | |
1304 | * Determine if a media is present in the floppy drive, and if so, | |
1305 | * its LBA capacity. | |
1306 | */ | |
1307 | static int idefloppy_get_capacity (ide_drive_t *drive) | |
1308 | { | |
1309 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1310 | idefloppy_pc_t pc; | |
1311 | idefloppy_capacity_header_t *header; | |
1312 | idefloppy_capacity_descriptor_t *descriptor; | |
1313 | int i, descriptors, rc = 1, blocks, length; | |
1314 | ||
1315 | drive->bios_cyl = 0; | |
1316 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
1317 | floppy->blocks = 0; |
1318 | floppy->bs_factor = 1; | |
1da177e4 LT |
1319 | set_capacity(floppy->disk, 0); |
1320 | ||
1321 | idefloppy_create_read_capacity_cmd(&pc); | |
1322 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1323 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
1324 | return 1; | |
1325 | } | |
1326 | header = (idefloppy_capacity_header_t *) pc.buffer; | |
1327 | descriptors = header->length / sizeof(idefloppy_capacity_descriptor_t); | |
1328 | descriptor = (idefloppy_capacity_descriptor_t *) (header + 1); | |
1329 | ||
1330 | for (i = 0; i < descriptors; i++, descriptor++) { | |
8f622430 BP |
1331 | blocks = descriptor->blocks = be32_to_cpu(descriptor->blocks); |
1332 | length = descriptor->length = be16_to_cpu(descriptor->length); | |
1da177e4 LT |
1333 | |
1334 | if (!i) | |
1335 | { | |
1336 | switch (descriptor->dc) { | |
1337 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ | |
1338 | case CAPACITY_UNFORMATTED: | |
1339 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) | |
1340 | /* | |
1341 | * If it is not a clik drive, break out | |
1342 | * (maintains previous driver behaviour) | |
1343 | */ | |
1344 | break; | |
1345 | case CAPACITY_CURRENT: | |
1346 | /* Normal Zip/LS-120 disks */ | |
1347 | if (memcmp(descriptor, &floppy->capacity, sizeof (idefloppy_capacity_descriptor_t))) | |
1348 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " | |
1349 | "sector size\n", drive->name, | |
1350 | blocks * length / 1024, blocks, length); | |
1351 | floppy->capacity = *descriptor; | |
1352 | if (!length || length % 512) { | |
1353 | printk(KERN_NOTICE "%s: %d bytes block size " | |
1354 | "not supported\n", drive->name, length); | |
1355 | } else { | |
1356 | floppy->blocks = blocks; | |
1357 | floppy->block_size = length; | |
1358 | if ((floppy->bs_factor = length / 512) != 1) | |
1359 | printk(KERN_NOTICE "%s: warning: non " | |
1360 | "512 bytes block size not " | |
1361 | "fully supported\n", | |
1362 | drive->name); | |
1363 | rc = 0; | |
1364 | } | |
1365 | break; | |
1366 | case CAPACITY_NO_CARTRIDGE: | |
1367 | /* | |
1368 | * This is a KERN_ERR so it appears on screen | |
1369 | * for the user to see | |
1370 | */ | |
1371 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
1372 | break; | |
1373 | case CAPACITY_INVALID: | |
1374 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
1375 | "in drive\n", drive->name); | |
1376 | break; | |
1377 | } | |
1378 | } | |
1379 | if (!i) { | |
1380 | debug_log( "Descriptor 0 Code: %d\n", | |
1381 | descriptor->dc); | |
1382 | } | |
1383 | debug_log( "Descriptor %d: %dkB, %d blocks, %d " | |
1384 | "sector size\n", i, blocks * length / 1024, blocks, | |
1385 | length); | |
1386 | } | |
1387 | ||
1388 | /* Clik! disk does not support get_flexible_disk_page */ | |
1389 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
1390 | (void) idefloppy_get_flexible_disk_page(drive); | |
1391 | } | |
1392 | ||
1393 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); | |
1394 | return rc; | |
1395 | } | |
1396 | ||
1397 | /* | |
1398 | ** Obtain the list of formattable capacities. | |
1399 | ** Very similar to idefloppy_get_capacity, except that we push the capacity | |
1400 | ** descriptors to userland, instead of our own structures. | |
1401 | ** | |
1402 | ** Userland gives us the following structure: | |
1403 | ** | |
1404 | ** struct idefloppy_format_capacities { | |
1405 | ** int nformats; | |
1406 | ** struct { | |
1407 | ** int nblocks; | |
1408 | ** int blocksize; | |
1409 | ** } formats[]; | |
1410 | ** } ; | |
1411 | ** | |
1412 | ** userland initializes nformats to the number of allocated formats[] | |
1413 | ** records. On exit we set nformats to the number of records we've | |
1414 | ** actually initialized. | |
1415 | ** | |
1416 | */ | |
1417 | ||
1418 | static int idefloppy_get_format_capacities(ide_drive_t *drive, int __user *arg) | |
1419 | { | |
1420 | idefloppy_pc_t pc; | |
1421 | idefloppy_capacity_header_t *header; | |
1422 | idefloppy_capacity_descriptor_t *descriptor; | |
1423 | int i, descriptors, blocks, length; | |
1424 | int u_array_size; | |
1425 | int u_index; | |
1426 | int __user *argp; | |
1427 | ||
1428 | if (get_user(u_array_size, arg)) | |
1429 | return (-EFAULT); | |
1430 | ||
1431 | if (u_array_size <= 0) | |
1432 | return (-EINVAL); | |
1433 | ||
1434 | idefloppy_create_read_capacity_cmd(&pc); | |
1435 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1436 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
1437 | return (-EIO); | |
1438 | } | |
1439 | header = (idefloppy_capacity_header_t *) pc.buffer; | |
1440 | descriptors = header->length / | |
1441 | sizeof(idefloppy_capacity_descriptor_t); | |
1442 | descriptor = (idefloppy_capacity_descriptor_t *) (header + 1); | |
1443 | ||
1444 | u_index = 0; | |
1445 | argp = arg + 1; | |
1446 | ||
1447 | /* | |
1448 | ** We always skip the first capacity descriptor. That's the | |
1449 | ** current capacity. We are interested in the remaining descriptors, | |
1450 | ** the formattable capacities. | |
1451 | */ | |
1452 | ||
1453 | for (i=0; i<descriptors; i++, descriptor++) { | |
1454 | if (u_index >= u_array_size) | |
1455 | break; /* User-supplied buffer too small */ | |
1456 | if (i == 0) | |
1457 | continue; /* Skip the first descriptor */ | |
1458 | ||
8f622430 BP |
1459 | blocks = be32_to_cpu(descriptor->blocks); |
1460 | length = be16_to_cpu(descriptor->length); | |
1da177e4 LT |
1461 | |
1462 | if (put_user(blocks, argp)) | |
1463 | return(-EFAULT); | |
1464 | ++argp; | |
1465 | ||
1466 | if (put_user(length, argp)) | |
1467 | return (-EFAULT); | |
1468 | ++argp; | |
1469 | ||
1470 | ++u_index; | |
1471 | } | |
1472 | ||
1473 | if (put_user(u_index, arg)) | |
1474 | return (-EFAULT); | |
1475 | return (0); | |
1476 | } | |
1477 | ||
1478 | /* | |
1479 | ** Send ATAPI_FORMAT_UNIT to the drive. | |
1480 | ** | |
1481 | ** Userland gives us the following structure: | |
1482 | ** | |
1483 | ** struct idefloppy_format_command { | |
1484 | ** int nblocks; | |
1485 | ** int blocksize; | |
1486 | ** int flags; | |
1487 | ** } ; | |
1488 | ** | |
1489 | ** flags is a bitmask, currently, the only defined flag is: | |
1490 | ** | |
1491 | ** 0x01 - verify media after format. | |
1492 | */ | |
1493 | ||
1494 | static int idefloppy_begin_format(ide_drive_t *drive, int __user *arg) | |
1495 | { | |
1496 | int blocks; | |
1497 | int length; | |
1498 | int flags; | |
1499 | idefloppy_pc_t pc; | |
1500 | ||
1501 | if (get_user(blocks, arg) || | |
1502 | get_user(length, arg+1) || | |
1503 | get_user(flags, arg+2)) { | |
1504 | return (-EFAULT); | |
1505 | } | |
1506 | ||
1507 | /* Get the SFRP bit */ | |
1508 | (void) idefloppy_get_capability_page(drive); | |
1509 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); | |
1510 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1511 | return (-EIO); | |
1512 | } | |
1513 | ||
1514 | return (0); | |
1515 | } | |
1516 | ||
1517 | /* | |
1518 | ** Get ATAPI_FORMAT_UNIT progress indication. | |
1519 | ** | |
0779bf2d | 1520 | ** Userland gives a pointer to an int. The int is set to a progress |
1da177e4 LT |
1521 | ** indicator 0-65536, with 65536=100%. |
1522 | ** | |
1523 | ** If the drive does not support format progress indication, we just check | |
1524 | ** the dsc bit, and return either 0 or 65536. | |
1525 | */ | |
1526 | ||
1527 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) | |
1528 | { | |
1529 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1530 | idefloppy_pc_t pc; | |
1531 | int progress_indication = 0x10000; | |
1532 | ||
1533 | if (floppy->srfp) { | |
1534 | idefloppy_create_request_sense_cmd(&pc); | |
1535 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1536 | return (-EIO); | |
1537 | } | |
1538 | ||
1539 | if (floppy->sense_key == 2 && | |
1540 | floppy->asc == 4 && | |
1541 | floppy->ascq == 4) { | |
1542 | progress_indication = floppy->progress_indication; | |
1543 | } | |
1544 | /* Else assume format_unit has finished, and we're | |
1545 | ** at 0x10000 */ | |
1546 | } else { | |
1da177e4 | 1547 | unsigned long flags; |
22c525b9 | 1548 | u8 stat; |
1da177e4 LT |
1549 | |
1550 | local_irq_save(flags); | |
22c525b9 | 1551 | stat = drive->hwif->INB(IDE_STATUS_REG); |
1da177e4 LT |
1552 | local_irq_restore(flags); |
1553 | ||
22c525b9 | 1554 | progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000; |
1da177e4 LT |
1555 | } |
1556 | if (put_user(progress_indication, arg)) | |
1557 | return (-EFAULT); | |
1558 | ||
1559 | return (0); | |
1560 | } | |
1561 | ||
1562 | /* | |
1563 | * Return the current floppy capacity. | |
1564 | */ | |
1565 | static sector_t idefloppy_capacity (ide_drive_t *drive) | |
1566 | { | |
1567 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1568 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
1569 | ||
1570 | return capacity; | |
1571 | } | |
1572 | ||
1573 | /* | |
1574 | * idefloppy_identify_device checks if we can support a drive, | |
1575 | * based on the ATAPI IDENTIFY command results. | |
1576 | */ | |
1577 | static int idefloppy_identify_device (ide_drive_t *drive,struct hd_driveid *id) | |
1578 | { | |
1579 | struct idefloppy_id_gcw gcw; | |
1580 | #if IDEFLOPPY_DEBUG_INFO | |
1da177e4 LT |
1581 | char buffer[80]; |
1582 | #endif /* IDEFLOPPY_DEBUG_INFO */ | |
1583 | ||
1584 | *((u16 *) &gcw) = id->config; | |
1585 | ||
1586 | #ifdef CONFIG_PPC | |
1587 | /* kludge for Apple PowerBook internal zip */ | |
1588 | if ((gcw.device_type == 5) && | |
1589 | !strstr(id->model, "CD-ROM") && | |
1590 | strstr(id->model, "ZIP")) | |
1591 | gcw.device_type = 0; | |
1592 | #endif | |
1593 | ||
1594 | #if IDEFLOPPY_DEBUG_INFO | |
1595 | printk(KERN_INFO "Dumping ATAPI Identify Device floppy parameters\n"); | |
1596 | switch (gcw.protocol) { | |
1597 | case 0: case 1: sprintf(buffer, "ATA");break; | |
1598 | case 2: sprintf(buffer, "ATAPI");break; | |
1599 | case 3: sprintf(buffer, "Reserved (Unknown to ide-floppy)");break; | |
1600 | } | |
1601 | printk(KERN_INFO "Protocol Type: %s\n", buffer); | |
1602 | switch (gcw.device_type) { | |
1603 | case 0: sprintf(buffer, "Direct-access Device");break; | |
1604 | case 1: sprintf(buffer, "Streaming Tape Device");break; | |
1605 | case 2: case 3: case 4: sprintf (buffer, "Reserved");break; | |
1606 | case 5: sprintf(buffer, "CD-ROM Device");break; | |
1607 | case 6: sprintf(buffer, "Reserved"); | |
1608 | case 7: sprintf(buffer, "Optical memory Device");break; | |
1609 | case 0x1f: sprintf(buffer, "Unknown or no Device type");break; | |
1610 | default: sprintf(buffer, "Reserved"); | |
1611 | } | |
1612 | printk(KERN_INFO "Device Type: %x - %s\n", gcw.device_type, buffer); | |
1613 | printk(KERN_INFO "Removable: %s\n",gcw.removable ? "Yes":"No"); | |
1614 | switch (gcw.drq_type) { | |
1615 | case 0: sprintf(buffer, "Microprocessor DRQ");break; | |
1616 | case 1: sprintf(buffer, "Interrupt DRQ");break; | |
1617 | case 2: sprintf(buffer, "Accelerated DRQ");break; | |
1618 | case 3: sprintf(buffer, "Reserved");break; | |
1619 | } | |
1620 | printk(KERN_INFO "Command Packet DRQ Type: %s\n", buffer); | |
1621 | switch (gcw.packet_size) { | |
1622 | case 0: sprintf(buffer, "12 bytes");break; | |
1623 | case 1: sprintf(buffer, "16 bytes");break; | |
1624 | default: sprintf(buffer, "Reserved");break; | |
1625 | } | |
1626 | printk(KERN_INFO "Command Packet Size: %s\n", buffer); | |
1da177e4 LT |
1627 | #endif /* IDEFLOPPY_DEBUG_INFO */ |
1628 | ||
1629 | if (gcw.protocol != 2) | |
1630 | printk(KERN_ERR "ide-floppy: Protocol is not ATAPI\n"); | |
1631 | else if (gcw.device_type != 0) | |
1632 | printk(KERN_ERR "ide-floppy: Device type is not set to floppy\n"); | |
1633 | else if (!gcw.removable) | |
1634 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); | |
1635 | else if (gcw.drq_type == 3) { | |
1636 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type %d not supported\n", gcw.drq_type); | |
1637 | } else if (gcw.packet_size != 0) { | |
1638 | printk(KERN_ERR "ide-floppy: Packet size is not 12 bytes long\n"); | |
1639 | } else | |
1640 | return 1; | |
1641 | return 0; | |
1642 | } | |
1643 | ||
7662d046 | 1644 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1645 | static void idefloppy_add_settings(ide_drive_t *drive) |
1646 | { | |
1647 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1648 | ||
1649 | /* | |
1497943e | 1650 | * drive setting name read/write data type min max mul_factor div_factor data pointer set function |
1da177e4 | 1651 | */ |
1497943e BZ |
1652 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL); |
1653 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); | |
1654 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); | |
1655 | ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL); | |
1da177e4 | 1656 | } |
7662d046 BZ |
1657 | #else |
1658 | static inline void idefloppy_add_settings(ide_drive_t *drive) { ; } | |
1659 | #endif | |
1da177e4 LT |
1660 | |
1661 | /* | |
1662 | * Driver initialization. | |
1663 | */ | |
1664 | static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy) | |
1665 | { | |
1666 | struct idefloppy_id_gcw gcw; | |
1667 | ||
1668 | *((u16 *) &gcw) = drive->id->config; | |
1669 | floppy->pc = floppy->pc_stack; | |
1670 | if (gcw.drq_type == 1) | |
1671 | set_bit(IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags); | |
1672 | /* | |
1673 | * We used to check revisions here. At this point however | |
1674 | * I'm giving up. Just assume they are all broken, its easier. | |
1675 | * | |
1676 | * The actual reason for the workarounds was likely | |
1677 | * a driver bug after all rather than a firmware bug, | |
1678 | * and the workaround below used to hide it. It should | |
1679 | * be fixed as of version 1.9, but to be on the safe side | |
1680 | * we'll leave the limitation below for the 2.2.x tree. | |
1681 | */ | |
1682 | ||
1683 | if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { | |
1684 | set_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags); | |
1685 | /* This value will be visible in the /proc/ide/hdx/settings */ | |
1686 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
1687 | blk_queue_max_sectors(drive->queue, 64); | |
1688 | } | |
1689 | ||
1690 | /* | |
1691 | * Guess what? The IOMEGA Clik! drive also needs the | |
1692 | * above fix. It makes nasty clicking noises without | |
1693 | * it, so please don't remove this. | |
1694 | */ | |
1695 | if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { | |
1696 | blk_queue_max_sectors(drive->queue, 64); | |
1697 | set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags); | |
1698 | } | |
1699 | ||
1700 | ||
1701 | (void) idefloppy_get_capacity(drive); | |
1702 | idefloppy_add_settings(drive); | |
1703 | } | |
1704 | ||
4031bbe4 | 1705 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
1706 | { |
1707 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1708 | struct gendisk *g = floppy->disk; | |
1709 | ||
7662d046 | 1710 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
1711 | |
1712 | del_gendisk(g); | |
1713 | ||
1714 | ide_floppy_put(floppy); | |
1da177e4 LT |
1715 | } |
1716 | ||
1717 | static void ide_floppy_release(struct kref *kref) | |
1718 | { | |
1719 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
1720 | ide_drive_t *drive = floppy->drive; | |
1721 | struct gendisk *g = floppy->disk; | |
1722 | ||
1723 | drive->driver_data = NULL; | |
1724 | g->private_data = NULL; | |
1725 | put_disk(g); | |
1726 | kfree(floppy); | |
1727 | } | |
1728 | ||
ecfd80e4 | 1729 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1730 | static int proc_idefloppy_read_capacity |
1731 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
1732 | { | |
1733 | ide_drive_t*drive = (ide_drive_t *)data; | |
1734 | int len; | |
1735 | ||
1736 | len = sprintf(page,"%llu\n", (long long)idefloppy_capacity(drive)); | |
1737 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
1738 | } | |
1739 | ||
1740 | static ide_proc_entry_t idefloppy_proc[] = { | |
1741 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, | |
1742 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1743 | { NULL, 0, NULL, NULL } | |
1744 | }; | |
ecfd80e4 | 1745 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 1746 | |
4031bbe4 | 1747 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 1748 | |
1da177e4 | 1749 | static ide_driver_t idefloppy_driver = { |
8604affd | 1750 | .gen_driver = { |
4ef3b8f4 | 1751 | .owner = THIS_MODULE, |
8604affd BZ |
1752 | .name = "ide-floppy", |
1753 | .bus = &ide_bus_type, | |
8604affd | 1754 | }, |
4031bbe4 RK |
1755 | .probe = ide_floppy_probe, |
1756 | .remove = ide_floppy_remove, | |
1da177e4 LT |
1757 | .version = IDEFLOPPY_VERSION, |
1758 | .media = ide_floppy, | |
1da177e4 | 1759 | .supports_dsc_overlap = 0, |
1da177e4 LT |
1760 | .do_request = idefloppy_do_request, |
1761 | .end_request = idefloppy_do_end_request, | |
1762 | .error = __ide_error, | |
1763 | .abort = __ide_abort, | |
7662d046 | 1764 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1765 | .proc = idefloppy_proc, |
7662d046 | 1766 | #endif |
1da177e4 LT |
1767 | }; |
1768 | ||
1769 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
1770 | { | |
1771 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1772 | struct ide_floppy_obj *floppy; | |
1773 | ide_drive_t *drive; | |
1774 | idefloppy_pc_t pc; | |
1775 | int ret = 0; | |
1776 | ||
1777 | debug_log(KERN_INFO "Reached idefloppy_open\n"); | |
1778 | ||
1779 | if (!(floppy = ide_floppy_get(disk))) | |
1780 | return -ENXIO; | |
1781 | ||
1782 | drive = floppy->drive; | |
1783 | ||
c94964a4 | 1784 | floppy->openers++; |
1da177e4 | 1785 | |
c94964a4 | 1786 | if (floppy->openers == 1) { |
1da177e4 LT |
1787 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
1788 | /* Just in case */ | |
1789 | ||
1790 | idefloppy_create_test_unit_ready_cmd(&pc); | |
1791 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1792 | idefloppy_create_start_stop_cmd(&pc, 1); | |
1793 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1794 | } | |
1795 | ||
1796 | if (idefloppy_get_capacity (drive) | |
1797 | && (filp->f_flags & O_NDELAY) == 0 | |
1798 | /* | |
1799 | ** Allow O_NDELAY to open a drive without a disk, or with | |
1800 | ** an unreadable disk, so that we can get the format | |
1801 | ** capacity of the drive or begin the format - Sam | |
1802 | */ | |
1803 | ) { | |
1da177e4 LT |
1804 | ret = -EIO; |
1805 | goto out_put_floppy; | |
1806 | } | |
1807 | ||
1808 | if (floppy->wp && (filp->f_mode & 2)) { | |
1da177e4 LT |
1809 | ret = -EROFS; |
1810 | goto out_put_floppy; | |
1811 | } | |
1812 | set_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); | |
1813 | /* IOMEGA Clik! drives do not support lock/unlock commands */ | |
1814 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
1815 | idefloppy_create_prevent_cmd(&pc, 1); | |
1816 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1817 | } | |
1818 | check_disk_change(inode->i_bdev); | |
1819 | } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) { | |
1da177e4 LT |
1820 | ret = -EBUSY; |
1821 | goto out_put_floppy; | |
1822 | } | |
1823 | return 0; | |
1824 | ||
1825 | out_put_floppy: | |
c94964a4 | 1826 | floppy->openers--; |
1da177e4 LT |
1827 | ide_floppy_put(floppy); |
1828 | return ret; | |
1829 | } | |
1830 | ||
1831 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
1832 | { | |
1833 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1834 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1835 | ide_drive_t *drive = floppy->drive; | |
1836 | idefloppy_pc_t pc; | |
1837 | ||
1838 | debug_log(KERN_INFO "Reached idefloppy_release\n"); | |
1839 | ||
c94964a4 | 1840 | if (floppy->openers == 1) { |
1da177e4 LT |
1841 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
1842 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
1843 | idefloppy_create_prevent_cmd(&pc, 0); | |
1844 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1845 | } | |
1846 | ||
1847 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
1848 | } | |
c94964a4 BZ |
1849 | |
1850 | floppy->openers--; | |
1da177e4 LT |
1851 | |
1852 | ide_floppy_put(floppy); | |
1853 | ||
1854 | return 0; | |
1855 | } | |
1856 | ||
a885c8c4 CH |
1857 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1858 | { | |
1859 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1860 | ide_drive_t *drive = floppy->drive; | |
1861 | ||
1862 | geo->heads = drive->bios_head; | |
1863 | geo->sectors = drive->bios_sect; | |
1864 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1865 | return 0; | |
1866 | } | |
1867 | ||
1da177e4 LT |
1868 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
1869 | unsigned int cmd, unsigned long arg) | |
1870 | { | |
1871 | struct block_device *bdev = inode->i_bdev; | |
1872 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1873 | ide_drive_t *drive = floppy->drive; | |
1874 | void __user *argp = (void __user *)arg; | |
07203f64 | 1875 | int err; |
1da177e4 LT |
1876 | int prevent = (arg) ? 1 : 0; |
1877 | idefloppy_pc_t pc; | |
1da177e4 LT |
1878 | |
1879 | switch (cmd) { | |
1880 | case CDROMEJECT: | |
1881 | prevent = 0; | |
1882 | /* fall through */ | |
1883 | case CDROM_LOCKDOOR: | |
c94964a4 | 1884 | if (floppy->openers > 1) |
1da177e4 LT |
1885 | return -EBUSY; |
1886 | ||
1887 | /* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */ | |
1888 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
1889 | idefloppy_create_prevent_cmd(&pc, prevent); | |
1890 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1891 | } | |
1892 | if (cmd == CDROMEJECT) { | |
1893 | idefloppy_create_start_stop_cmd(&pc, 2); | |
1894 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1895 | } | |
1896 | return 0; | |
1897 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: | |
1898 | return 0; | |
1899 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
1900 | return idefloppy_get_format_capacities(drive, argp); | |
1901 | case IDEFLOPPY_IOCTL_FORMAT_START: | |
1902 | ||
1903 | if (!(file->f_mode & 2)) | |
1904 | return -EPERM; | |
1905 | ||
c94964a4 | 1906 | if (floppy->openers > 1) { |
1da177e4 LT |
1907 | /* Don't format if someone is using the disk */ |
1908 | ||
1909 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, | |
1910 | &floppy->flags); | |
1911 | return -EBUSY; | |
1912 | } | |
1913 | ||
1914 | set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
1915 | ||
1916 | err = idefloppy_begin_format(drive, argp); | |
1917 | if (err) | |
1918 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
1919 | return err; | |
1920 | /* | |
1921 | ** Note, the bit will be cleared when the device is | |
1922 | ** closed. This is the cleanest way to handle the | |
1923 | ** situation where the drive does not support | |
1924 | ** format progress reporting. | |
1925 | */ | |
1926 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: | |
1927 | return idefloppy_get_format_progress(drive, argp); | |
1928 | } | |
89636af2 BZ |
1929 | |
1930 | /* | |
1931 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
1932 | * and CDROM_SEND_PACKET (legacy) ioctls | |
1933 | */ | |
1934 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
1935 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
1936 | bdev->bd_disk, cmd, argp); | |
1937 | else | |
1938 | err = -ENOTTY; | |
1939 | ||
1940 | if (err == -ENOTTY) | |
1941 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1942 | ||
1943 | return err; | |
1da177e4 LT |
1944 | } |
1945 | ||
1946 | static int idefloppy_media_changed(struct gendisk *disk) | |
1947 | { | |
1948 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1949 | ide_drive_t *drive = floppy->drive; | |
1950 | ||
1951 | /* do not scan partitions twice if this is a removable device */ | |
1952 | if (drive->attach) { | |
1953 | drive->attach = 0; | |
1954 | return 0; | |
1955 | } | |
1956 | return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); | |
1957 | } | |
1958 | ||
1959 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
1960 | { | |
1961 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1962 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
1963 | return 0; | |
1964 | } | |
1965 | ||
1966 | static struct block_device_operations idefloppy_ops = { | |
1967 | .owner = THIS_MODULE, | |
1968 | .open = idefloppy_open, | |
1969 | .release = idefloppy_release, | |
1970 | .ioctl = idefloppy_ioctl, | |
a885c8c4 | 1971 | .getgeo = idefloppy_getgeo, |
1da177e4 LT |
1972 | .media_changed = idefloppy_media_changed, |
1973 | .revalidate_disk= idefloppy_revalidate_disk | |
1974 | }; | |
1975 | ||
4031bbe4 | 1976 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
1977 | { |
1978 | idefloppy_floppy_t *floppy; | |
1979 | struct gendisk *g; | |
1980 | ||
1981 | if (!strstr("ide-floppy", drive->driver_req)) | |
1982 | goto failed; | |
1983 | if (!drive->present) | |
1984 | goto failed; | |
1985 | if (drive->media != ide_floppy) | |
1986 | goto failed; | |
1987 | if (!idefloppy_identify_device (drive, drive->id)) { | |
1988 | printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name); | |
1989 | goto failed; | |
1990 | } | |
1991 | if (drive->scsi) { | |
1992 | printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name); | |
1993 | goto failed; | |
1994 | } | |
5cbded58 | 1995 | if ((floppy = kzalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) { |
1da177e4 LT |
1996 | printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name); |
1997 | goto failed; | |
1998 | } | |
1999 | ||
2000 | g = alloc_disk(1 << PARTN_BITS); | |
2001 | if (!g) | |
2002 | goto out_free_floppy; | |
2003 | ||
2004 | ide_init_disk(g, drive); | |
2005 | ||
7662d046 | 2006 | ide_proc_register_driver(drive, &idefloppy_driver); |
1da177e4 | 2007 | |
1da177e4 LT |
2008 | kref_init(&floppy->kref); |
2009 | ||
2010 | floppy->drive = drive; | |
2011 | floppy->driver = &idefloppy_driver; | |
2012 | floppy->disk = g; | |
2013 | ||
2014 | g->private_data = &floppy->driver; | |
2015 | ||
2016 | drive->driver_data = floppy; | |
2017 | ||
1da177e4 | 2018 | idefloppy_setup (drive, floppy); |
8604affd | 2019 | |
1da177e4 LT |
2020 | g->minors = 1 << PARTN_BITS; |
2021 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
2022 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
2023 | g->fops = &idefloppy_ops; | |
2024 | drive->attach = 1; | |
2025 | add_disk(g); | |
2026 | return 0; | |
2027 | ||
1da177e4 LT |
2028 | out_free_floppy: |
2029 | kfree(floppy); | |
2030 | failed: | |
8604affd | 2031 | return -ENODEV; |
1da177e4 LT |
2032 | } |
2033 | ||
2034 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); | |
2035 | ||
2036 | static void __exit idefloppy_exit (void) | |
2037 | { | |
8604affd | 2038 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
2039 | } |
2040 | ||
17514e8a | 2041 | static int __init idefloppy_init(void) |
1da177e4 LT |
2042 | { |
2043 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 2044 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
2045 | } |
2046 | ||
263756ec | 2047 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
2048 | module_init(idefloppy_init); |
2049 | module_exit(idefloppy_exit); | |
2050 | MODULE_LICENSE("GPL"); |