]>
Commit | Line | Data |
---|---|---|
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 | 44 | #include <asm/byteorder.h> |
7e8b163b BP |
45 | #include <linux/irq.h> |
46 | #include <linux/uaccess.h> | |
47 | #include <linux/io.h> | |
1da177e4 LT |
48 | #include <asm/unaligned.h> |
49 | ||
f373bd82 | 50 | /* define to see debug info */ |
1da177e4 | 51 | #define IDEFLOPPY_DEBUG_LOG 0 |
1da177e4 LT |
52 | |
53 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ | |
54 | #define IDEFLOPPY_DEBUG( fmt, args... ) | |
55 | ||
56 | #if IDEFLOPPY_DEBUG_LOG | |
bcc77d9c BP |
57 | #define debug_log(fmt, args...) \ |
58 | printk(KERN_INFO "ide-floppy: " fmt, ## args) | |
1da177e4 LT |
59 | #else |
60 | #define debug_log(fmt, args... ) do {} while(0) | |
61 | #endif | |
62 | ||
63 | ||
64 | /* | |
65 | * Some drives require a longer irq timeout. | |
66 | */ | |
67 | #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) | |
68 | ||
69 | /* | |
70 | * After each failed packet command we issue a request sense command | |
71 | * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
72 | */ | |
73 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
74 | ||
75 | /* | |
76 | * With each packet command, we allocate a buffer of | |
77 | * IDEFLOPPY_PC_BUFFER_SIZE bytes. | |
78 | */ | |
79 | #define IDEFLOPPY_PC_BUFFER_SIZE 256 | |
80 | ||
81 | /* | |
82 | * In various places in the driver, we need to allocate storage | |
83 | * for packet commands and requests, which will remain valid while | |
84 | * we leave the driver to wait for an interrupt or a timeout event. | |
85 | */ | |
86 | #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES) | |
87 | ||
88 | /* | |
89 | * Our view of a packet command. | |
90 | */ | |
91 | typedef struct idefloppy_packet_command_s { | |
92 | u8 c[12]; /* Actual packet bytes */ | |
93 | int retries; /* On each retry, we increment retries */ | |
94 | int error; /* Error code */ | |
95 | int request_transfer; /* Bytes to transfer */ | |
96 | int actually_transferred; /* Bytes actually transferred */ | |
97 | int buffer_size; /* Size of our data buffer */ | |
98 | int b_count; /* Missing/Available data on the current buffer */ | |
99 | struct request *rq; /* The corresponding request */ | |
100 | u8 *buffer; /* Data buffer */ | |
101 | u8 *current_position; /* Pointer into the above buffer */ | |
102 | void (*callback) (ide_drive_t *); /* Called when this packet command is completed */ | |
103 | u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */ | |
104 | unsigned long flags; /* Status/Action bit flags: long for set_bit */ | |
105 | } idefloppy_pc_t; | |
106 | ||
107 | /* | |
108 | * Packet command flag bits. | |
109 | */ | |
110 | #define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */ | |
111 | #define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */ | |
112 | #define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */ | |
113 | #define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */ | |
114 | #define PC_WRITING 5 /* Data direction */ | |
115 | ||
116 | #define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */ | |
117 | ||
194ec0c0 | 118 | /* format capacities descriptor codes */ |
1da177e4 LT |
119 | #define CAPACITY_INVALID 0x00 |
120 | #define CAPACITY_UNFORMATTED 0x01 | |
121 | #define CAPACITY_CURRENT 0x02 | |
122 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
123 | ||
124 | /* | |
125 | * Most of our global data which we need to save even as we leave the | |
126 | * driver due to an interrupt or a timer event is stored in a variable | |
127 | * of type idefloppy_floppy_t, defined below. | |
128 | */ | |
129 | typedef struct ide_floppy_obj { | |
130 | ide_drive_t *drive; | |
131 | ide_driver_t *driver; | |
132 | struct gendisk *disk; | |
133 | struct kref kref; | |
c94964a4 | 134 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
135 | |
136 | /* Current packet command */ | |
137 | idefloppy_pc_t *pc; | |
138 | /* Last failed packet command */ | |
139 | idefloppy_pc_t *failed_pc; | |
140 | /* Packet command stack */ | |
141 | idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK]; | |
142 | /* Next free packet command storage space */ | |
143 | int pc_stack_index; | |
144 | struct request rq_stack[IDEFLOPPY_PC_STACK]; | |
145 | /* We implement a circular array */ | |
146 | int rq_stack_index; | |
147 | ||
148 | /* | |
149 | * Last error information | |
150 | */ | |
151 | u8 sense_key, asc, ascq; | |
152 | /* delay this long before sending packet command */ | |
153 | u8 ticks; | |
154 | int progress_indication; | |
155 | ||
156 | /* | |
157 | * Device information | |
158 | */ | |
159 | /* Current format */ | |
160 | int blocks, block_size, bs_factor; | |
194ec0c0 BP |
161 | /* Last format capacity descriptor */ |
162 | u8 cap_desc[8]; | |
1da177e4 | 163 | /* Copy of the flexible disk page */ |
8e81bbba | 164 | u8 flexible_disk_page[32]; |
1da177e4 LT |
165 | /* Write protect */ |
166 | int wp; | |
167 | /* Supports format progress report */ | |
168 | int srfp; | |
169 | /* Status/Action flags */ | |
170 | unsigned long flags; | |
171 | } idefloppy_floppy_t; | |
172 | ||
c40d3d38 | 173 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 LT |
174 | |
175 | /* | |
176 | * Floppy flag bits values. | |
177 | */ | |
178 | #define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */ | |
179 | #define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */ | |
1da177e4 LT |
180 | #define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */ |
181 | #define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */ | |
182 | #define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */ | |
183 | ||
1da177e4 LT |
184 | /* |
185 | * Defines for the mode sense command | |
186 | */ | |
187 | #define MODE_SENSE_CURRENT 0x00 | |
188 | #define MODE_SENSE_CHANGEABLE 0x01 | |
189 | #define MODE_SENSE_DEFAULT 0x02 | |
190 | #define MODE_SENSE_SAVED 0x03 | |
191 | ||
192 | /* | |
193 | * IOCTLs used in low-level formatting. | |
194 | */ | |
195 | ||
196 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 | |
197 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 | |
198 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 | |
199 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 | |
200 | ||
1da177e4 LT |
201 | /* |
202 | * Error codes which are returned in rq->errors to the higher part | |
203 | * of the driver. | |
204 | */ | |
205 | #define IDEFLOPPY_ERROR_GENERAL 101 | |
206 | ||
207 | /* | |
208 | * The following is used to format the general configuration word of | |
209 | * the ATAPI IDENTIFY DEVICE command. | |
210 | */ | |
211 | struct idefloppy_id_gcw { | |
212 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
213 | unsigned packet_size :2; /* Packet Size */ | |
214 | unsigned reserved234 :3; /* Reserved */ | |
215 | unsigned drq_type :2; /* Command packet DRQ type */ | |
216 | unsigned removable :1; /* Removable media */ | |
217 | unsigned device_type :5; /* Device type */ | |
218 | unsigned reserved13 :1; /* Reserved */ | |
219 | unsigned protocol :2; /* Protocol type */ | |
220 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
221 | unsigned protocol :2; /* Protocol type */ | |
222 | unsigned reserved13 :1; /* Reserved */ | |
223 | unsigned device_type :5; /* Device type */ | |
224 | unsigned removable :1; /* Removable media */ | |
225 | unsigned drq_type :2; /* Command packet DRQ type */ | |
226 | unsigned reserved234 :3; /* Reserved */ | |
227 | unsigned packet_size :2; /* Packet Size */ | |
228 | #else | |
229 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
230 | #endif | |
231 | }; | |
232 | ||
1da177e4 | 233 | /* |
948391d1 BP |
234 | * Pages of the SELECT SENSE / MODE SENSE packet commands. |
235 | * See SFF-8070i spec. | |
1da177e4 LT |
236 | */ |
237 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b | |
238 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 | |
239 | ||
cf8b8975 | 240 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
241 | |
242 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
243 | ||
244 | #define ide_floppy_g(disk) \ | |
245 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
246 | ||
247 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) | |
248 | { | |
249 | struct ide_floppy_obj *floppy = NULL; | |
250 | ||
cf8b8975 | 251 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 LT |
252 | floppy = ide_floppy_g(disk); |
253 | if (floppy) | |
254 | kref_get(&floppy->kref); | |
cf8b8975 | 255 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
256 | return floppy; |
257 | } | |
258 | ||
9a24b63d | 259 | static void idefloppy_cleanup_obj(struct kref *); |
1da177e4 LT |
260 | |
261 | static void ide_floppy_put(struct ide_floppy_obj *floppy) | |
262 | { | |
cf8b8975 | 263 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 264 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
cf8b8975 | 265 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
266 | } |
267 | ||
268 | /* | |
269 | * Too bad. The drive wants to send us data which we are not ready to accept. | |
270 | * Just throw it away. | |
271 | */ | |
272 | static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount) | |
273 | { | |
274 | while (bcount--) | |
275 | (void) HWIF(drive)->INB(IDE_DATA_REG); | |
276 | } | |
277 | ||
0bf399e6 | 278 | static void idefloppy_write_zeros(ide_drive_t *drive, unsigned int bcount) |
1da177e4 LT |
279 | { |
280 | while (bcount--) | |
281 | HWIF(drive)->OUTB(0, IDE_DATA_REG); | |
282 | } | |
1da177e4 LT |
283 | |
284 | ||
285 | /* | |
286 | * idefloppy_do_end_request is used to finish servicing a request. | |
287 | * | |
288 | * For read/write requests, we will call ide_end_request to pass to the | |
289 | * next buffer. | |
290 | */ | |
291 | static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs) | |
292 | { | |
293 | idefloppy_floppy_t *floppy = drive->driver_data; | |
294 | struct request *rq = HWGROUP(drive)->rq; | |
295 | int error; | |
296 | ||
bcc77d9c | 297 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
298 | |
299 | switch (uptodate) { | |
300 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; | |
301 | case 1: error = 0; break; | |
302 | default: error = uptodate; | |
303 | } | |
304 | if (error) | |
305 | floppy->failed_pc = NULL; | |
306 | /* Why does this happen? */ | |
307 | if (!rq) | |
308 | return 0; | |
4aff5e23 | 309 | if (!blk_special_request(rq)) { |
1da177e4 LT |
310 | /* our real local end request function */ |
311 | ide_end_request(drive, uptodate, nsecs); | |
312 | return 0; | |
313 | } | |
314 | rq->errors = error; | |
315 | /* fixme: need to move this local also */ | |
316 | ide_end_drive_cmd(drive, 0, 0); | |
317 | return 0; | |
318 | } | |
319 | ||
32925e1a BP |
320 | static void ide_floppy_io_buffers(ide_drive_t *drive, idefloppy_pc_t *pc, |
321 | unsigned int bcount, int direction) | |
1da177e4 LT |
322 | { |
323 | struct request *rq = pc->rq; | |
5705f702 | 324 | struct req_iterator iter; |
1da177e4 LT |
325 | struct bio_vec *bvec; |
326 | unsigned long flags; | |
5705f702 | 327 | int count, done = 0; |
1da177e4 LT |
328 | char *data; |
329 | ||
5705f702 | 330 | rq_for_each_segment(bvec, rq, iter) { |
6c92e699 JA |
331 | if (!bcount) |
332 | break; | |
1da177e4 | 333 | |
6c92e699 | 334 | count = min(bvec->bv_len, bcount); |
1da177e4 | 335 | |
6c92e699 | 336 | data = bvec_kmap_irq(bvec, &flags); |
32925e1a BP |
337 | if (direction) |
338 | drive->hwif->atapi_output_bytes(drive, data, count); | |
339 | else | |
340 | drive->hwif->atapi_input_bytes(drive, data, count); | |
6c92e699 | 341 | bvec_kunmap_irq(data, &flags); |
1da177e4 | 342 | |
6c92e699 JA |
343 | bcount -= count; |
344 | pc->b_count += count; | |
345 | done += count; | |
1da177e4 LT |
346 | } |
347 | ||
348 | idefloppy_do_end_request(drive, 1, done >> 9); | |
349 | ||
350 | if (bcount) { | |
32925e1a BP |
351 | printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n", |
352 | drive->name, __func__, bcount); | |
353 | if (direction) | |
354 | idefloppy_write_zeros(drive, bcount); | |
355 | else | |
356 | idefloppy_discard_data(drive, bcount); | |
357 | ||
1da177e4 LT |
358 | } |
359 | } | |
360 | ||
361 | static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc) | |
362 | { | |
363 | struct request *rq = pc->rq; | |
364 | struct bio *bio = rq->bio; | |
365 | ||
366 | while ((bio = rq->bio) != NULL) | |
367 | idefloppy_do_end_request(drive, 1, 0); | |
368 | } | |
369 | ||
370 | /* | |
371 | * idefloppy_queue_pc_head generates a new packet command request in front | |
372 | * of the request queue, before the current request, so that it will be | |
373 | * processed immediately, on the next pass through the driver. | |
374 | */ | |
375 | static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq) | |
376 | { | |
377 | struct ide_floppy_obj *floppy = drive->driver_data; | |
378 | ||
379 | ide_init_drive_cmd(rq); | |
380 | rq->buffer = (char *) pc; | |
4aff5e23 | 381 | rq->cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
382 | rq->rq_disk = floppy->disk; |
383 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
384 | } | |
385 | ||
386 | static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive) | |
387 | { | |
388 | idefloppy_floppy_t *floppy = drive->driver_data; | |
389 | ||
390 | if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK) | |
391 | floppy->pc_stack_index=0; | |
392 | return (&floppy->pc_stack[floppy->pc_stack_index++]); | |
393 | } | |
394 | ||
395 | static struct request *idefloppy_next_rq_storage (ide_drive_t *drive) | |
396 | { | |
397 | idefloppy_floppy_t *floppy = drive->driver_data; | |
398 | ||
399 | if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) | |
400 | floppy->rq_stack_index = 0; | |
401 | return (&floppy->rq_stack[floppy->rq_stack_index++]); | |
402 | } | |
403 | ||
a6ff2d3b | 404 | static void idefloppy_request_sense_callback(ide_drive_t *drive) |
1da177e4 LT |
405 | { |
406 | idefloppy_floppy_t *floppy = drive->driver_data; | |
a6ff2d3b | 407 | u8 *buf = floppy->pc->buffer; |
1da177e4 | 408 | |
bcc77d9c BP |
409 | debug_log("Reached %s\n", __func__); |
410 | ||
1da177e4 | 411 | if (!floppy->pc->error) { |
a6ff2d3b BP |
412 | floppy->sense_key = buf[2] & 0x0F; |
413 | floppy->asc = buf[12]; | |
414 | floppy->ascq = buf[13]; | |
415 | floppy->progress_indication = buf[15] & 0x80 ? | |
416 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
417 | ||
418 | if (floppy->failed_pc) | |
419 | debug_log("pc = %x, sense key = %x, asc = %x," | |
420 | " ascq = %x\n", | |
421 | floppy->failed_pc->c[0], | |
422 | floppy->sense_key, | |
423 | floppy->asc, | |
424 | floppy->ascq); | |
425 | else | |
426 | debug_log("sense key = %x, asc = %x, ascq = %x\n", | |
427 | floppy->sense_key, | |
428 | floppy->asc, | |
429 | floppy->ascq); | |
430 | ||
431 | ||
1da177e4 LT |
432 | idefloppy_do_end_request(drive, 1, 0); |
433 | } else { | |
a6ff2d3b BP |
434 | printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting" |
435 | " request!\n"); | |
1da177e4 LT |
436 | idefloppy_do_end_request(drive, 0, 0); |
437 | } | |
438 | } | |
439 | ||
440 | /* | |
441 | * General packet command callback function. | |
442 | */ | |
443 | static void idefloppy_pc_callback (ide_drive_t *drive) | |
444 | { | |
445 | idefloppy_floppy_t *floppy = drive->driver_data; | |
bcc77d9c BP |
446 | |
447 | debug_log("Reached %s\n", __func__); | |
1da177e4 LT |
448 | |
449 | idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0); | |
450 | } | |
451 | ||
452 | /* | |
453 | * idefloppy_init_pc initializes a packet command. | |
454 | */ | |
455 | static void idefloppy_init_pc (idefloppy_pc_t *pc) | |
456 | { | |
457 | memset(pc->c, 0, 12); | |
458 | pc->retries = 0; | |
459 | pc->flags = 0; | |
460 | pc->request_transfer = 0; | |
461 | pc->buffer = pc->pc_buffer; | |
462 | pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE; | |
463 | pc->callback = &idefloppy_pc_callback; | |
464 | } | |
465 | ||
466 | static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc) | |
467 | { | |
30d67099 BP |
468 | idefloppy_init_pc(pc); |
469 | pc->c[0] = GPCMD_REQUEST_SENSE; | |
1da177e4 LT |
470 | pc->c[4] = 255; |
471 | pc->request_transfer = 18; | |
472 | pc->callback = &idefloppy_request_sense_callback; | |
473 | } | |
474 | ||
475 | /* | |
476 | * idefloppy_retry_pc is called when an error was detected during the | |
477 | * last packet command. We queue a request sense packet command in | |
478 | * the head of the request list. | |
479 | */ | |
480 | static void idefloppy_retry_pc (ide_drive_t *drive) | |
481 | { | |
482 | idefloppy_pc_t *pc; | |
483 | struct request *rq; | |
1da177e4 | 484 | |
0e38a66a | 485 | (void)drive->hwif->INB(IDE_ERROR_REG); |
1da177e4 LT |
486 | pc = idefloppy_next_pc_storage(drive); |
487 | rq = idefloppy_next_rq_storage(drive); | |
488 | idefloppy_create_request_sense_cmd(pc); | |
489 | idefloppy_queue_pc_head(drive, pc, rq); | |
490 | } | |
491 | ||
0eea6458 | 492 | /* The usual interrupt handler called during a packet command. */ |
1da177e4 LT |
493 | static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive) |
494 | { | |
495 | idefloppy_floppy_t *floppy = drive->driver_data; | |
790d1239 | 496 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
497 | idefloppy_pc_t *pc = floppy->pc; |
498 | struct request *rq = pc->rq; | |
0eea6458 | 499 | xfer_func_t *xferfunc; |
1da177e4 | 500 | unsigned int temp; |
d30a7fba | 501 | int dma_error = 0; |
790d1239 | 502 | u16 bcount; |
8e7657ae | 503 | u8 stat, ireason; |
1da177e4 | 504 | |
bcc77d9c | 505 | debug_log("Reached %s interrupt handler\n", __func__); |
1da177e4 LT |
506 | |
507 | if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { | |
d30a7fba BP |
508 | dma_error = hwif->ide_dma_end(drive); |
509 | if (dma_error) { | |
510 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
511 | rq_data_dir(rq) ? "write" : "read"); | |
1da177e4 LT |
512 | set_bit(PC_DMA_ERROR, &pc->flags); |
513 | } else { | |
514 | pc->actually_transferred = pc->request_transfer; | |
515 | idefloppy_update_buffers(drive, pc); | |
516 | } | |
bcc77d9c | 517 | debug_log("DMA finished\n"); |
1da177e4 LT |
518 | } |
519 | ||
520 | /* Clear the interrupt */ | |
22c525b9 | 521 | stat = drive->hwif->INB(IDE_STATUS_REG); |
1da177e4 | 522 | |
22c525b9 | 523 | if ((stat & DRQ_STAT) == 0) { /* No more interrupts */ |
bcc77d9c BP |
524 | debug_log("Packet command completed, %d bytes transferred\n", |
525 | pc->actually_transferred); | |
1da177e4 LT |
526 | clear_bit(PC_DMA_IN_PROGRESS, &pc->flags); |
527 | ||
366c7f55 | 528 | local_irq_enable_in_hardirq(); |
1da177e4 | 529 | |
22c525b9 | 530 | if ((stat & ERR_STAT) || test_bit(PC_DMA_ERROR, &pc->flags)) { |
1da177e4 | 531 | /* Error detected */ |
bcc77d9c | 532 | debug_log("%s: I/O error\n", drive->name); |
1da177e4 | 533 | rq->errors++; |
30d67099 | 534 | if (pc->c[0] == GPCMD_REQUEST_SENSE) { |
1da177e4 LT |
535 | printk(KERN_ERR "ide-floppy: I/O error in " |
536 | "request sense command\n"); | |
537 | return ide_do_reset(drive); | |
538 | } | |
539 | /* Retry operation */ | |
540 | idefloppy_retry_pc(drive); | |
541 | /* queued, but not started */ | |
542 | return ide_stopped; | |
543 | } | |
544 | pc->error = 0; | |
545 | if (floppy->failed_pc == pc) | |
546 | floppy->failed_pc = NULL; | |
547 | /* Command finished - Call the callback function */ | |
548 | pc->callback(drive); | |
549 | return ide_stopped; | |
550 | } | |
551 | ||
552 | if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { | |
553 | printk(KERN_ERR "ide-floppy: The floppy wants to issue " | |
554 | "more interrupts in DMA mode\n"); | |
7469aaf6 | 555 | ide_dma_off(drive); |
1da177e4 LT |
556 | return ide_do_reset(drive); |
557 | } | |
558 | ||
559 | /* Get the number of bytes to transfer */ | |
790d1239 BZ |
560 | bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) | |
561 | hwif->INB(IDE_BCOUNTL_REG); | |
1da177e4 | 562 | /* on this interrupt */ |
8e7657ae | 563 | ireason = hwif->INB(IDE_IREASON_REG); |
1da177e4 | 564 | |
8e7657ae | 565 | if (ireason & CD) { |
0eea6458 | 566 | printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__); |
1da177e4 LT |
567 | return ide_do_reset(drive); |
568 | } | |
8e7657ae | 569 | if (((ireason & IO) == IO) == test_bit(PC_WRITING, &pc->flags)) { |
1da177e4 LT |
570 | /* Hopefully, we will never get here */ |
571 | printk(KERN_ERR "ide-floppy: We wanted to %s, ", | |
8e7657ae | 572 | (ireason & IO) ? "Write" : "Read"); |
1da177e4 | 573 | printk(KERN_ERR "but the floppy wants us to %s !\n", |
8e7657ae | 574 | (ireason & IO) ? "Read" : "Write"); |
1da177e4 LT |
575 | return ide_do_reset(drive); |
576 | } | |
577 | if (!test_bit(PC_WRITING, &pc->flags)) { | |
578 | /* Reading - Check that we have enough space */ | |
790d1239 | 579 | temp = pc->actually_transferred + bcount; |
1da177e4 LT |
580 | if (temp > pc->request_transfer) { |
581 | if (temp > pc->buffer_size) { | |
582 | printk(KERN_ERR "ide-floppy: The floppy wants " | |
583 | "to send us more data than expected " | |
584 | "- discarding data\n"); | |
790d1239 | 585 | idefloppy_discard_data(drive, bcount); |
0078df2e | 586 | |
1da177e4 LT |
587 | ide_set_handler(drive, |
588 | &idefloppy_pc_intr, | |
589 | IDEFLOPPY_WAIT_CMD, | |
590 | NULL); | |
591 | return ide_started; | |
592 | } | |
bcc77d9c BP |
593 | debug_log("The floppy wants to send us more data than" |
594 | " expected - allowing transfer\n"); | |
1da177e4 LT |
595 | } |
596 | } | |
32925e1a | 597 | if (test_bit(PC_WRITING, &pc->flags)) |
0eea6458 | 598 | xferfunc = hwif->atapi_output_bytes; |
32925e1a | 599 | else |
0eea6458 | 600 | xferfunc = hwif->atapi_input_bytes; |
0eea6458 BP |
601 | |
602 | if (pc->buffer) | |
603 | xferfunc(drive, pc->current_position, bcount); | |
604 | else | |
32925e1a BP |
605 | ide_floppy_io_buffers(drive, pc, bcount, |
606 | test_bit(PC_WRITING, &pc->flags)); | |
0eea6458 | 607 | |
1da177e4 | 608 | /* Update the current position */ |
790d1239 BZ |
609 | pc->actually_transferred += bcount; |
610 | pc->current_position += bcount; | |
1da177e4 | 611 | |
32925e1a BP |
612 | /* And set the interrupt handler again */ |
613 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
1da177e4 LT |
614 | return ide_started; |
615 | } | |
616 | ||
617 | /* | |
618 | * This is the original routine that did the packet transfer. | |
619 | * It fails at high speeds on the Iomega ZIP drive, so there's a slower version | |
620 | * for that drive below. The algorithm is chosen based on drive type | |
621 | */ | |
622 | static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive) | |
623 | { | |
624 | ide_startstop_t startstop; | |
625 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e7657ae | 626 | u8 ireason; |
1da177e4 LT |
627 | |
628 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
629 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
630 | "initiated yet DRQ isn't asserted\n"); | |
631 | return startstop; | |
632 | } | |
8e7657ae BZ |
633 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
634 | if ((ireason & CD) == 0 || (ireason & IO)) { | |
1da177e4 LT |
635 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while " |
636 | "issuing a packet command\n"); | |
637 | return ide_do_reset(drive); | |
638 | } | |
0078df2e | 639 | |
1da177e4 LT |
640 | /* Set the interrupt routine */ |
641 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
642 | /* Send the actual packet */ | |
643 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
644 | return ide_started; | |
645 | } | |
646 | ||
647 | ||
648 | /* | |
649 | * What we have here is a classic case of a top half / bottom half | |
650 | * interrupt service routine. In interrupt mode, the device sends | |
651 | * an interrupt to signal it's ready to receive a packet. However, | |
652 | * we need to delay about 2-3 ticks before issuing the packet or we | |
653 | * gets in trouble. | |
654 | * | |
655 | * So, follow carefully. transfer_pc1 is called as an interrupt (or | |
656 | * directly). In either case, when the device says it's ready for a | |
657 | * packet, we schedule the packet transfer to occur about 2-3 ticks | |
658 | * later in transfer_pc2. | |
659 | */ | |
660 | static int idefloppy_transfer_pc2 (ide_drive_t *drive) | |
661 | { | |
662 | idefloppy_floppy_t *floppy = drive->driver_data; | |
663 | ||
664 | /* Send the actual packet */ | |
665 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
666 | /* Timeout for the packet command */ | |
667 | return IDEFLOPPY_WAIT_CMD; | |
668 | } | |
669 | ||
670 | static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive) | |
671 | { | |
672 | idefloppy_floppy_t *floppy = drive->driver_data; | |
673 | ide_startstop_t startstop; | |
8e7657ae | 674 | u8 ireason; |
1da177e4 LT |
675 | |
676 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
677 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
678 | "initiated yet DRQ isn't asserted\n"); | |
679 | return startstop; | |
680 | } | |
8e7657ae BZ |
681 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
682 | if ((ireason & CD) == 0 || (ireason & IO)) { | |
1da177e4 LT |
683 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) " |
684 | "while issuing a packet command\n"); | |
685 | return ide_do_reset(drive); | |
686 | } | |
687 | /* | |
688 | * The following delay solves a problem with ATAPI Zip 100 drives | |
689 | * where the Busy flag was apparently being deasserted before the | |
690 | * unit was ready to receive data. This was happening on a | |
691 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
692 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
693 | * used until after the packet is moved in about 50 msec. | |
694 | */ | |
0078df2e | 695 | |
1da177e4 LT |
696 | ide_set_handler(drive, |
697 | &idefloppy_pc_intr, /* service routine for packet command */ | |
698 | floppy->ticks, /* wait this long before "failing" */ | |
699 | &idefloppy_transfer_pc2); /* fail == transfer_pc2 */ | |
700 | return ide_started; | |
701 | } | |
702 | ||
d652c138 BP |
703 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
704 | idefloppy_pc_t *pc) | |
1da177e4 | 705 | { |
d652c138 | 706 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
707 | if (floppy->sense_key == 0x02 && |
708 | floppy->asc == 0x3a && | |
709 | floppy->ascq == 0x00) | |
d652c138 BP |
710 | return; |
711 | ||
712 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
713 | "asc = %2x, ascq = %2x\n", | |
714 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
715 | floppy->asc, floppy->ascq); | |
716 | ||
1da177e4 LT |
717 | } |
718 | ||
719 | /* | |
720 | * Issue a packet command | |
721 | */ | |
722 | static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc) | |
723 | { | |
724 | idefloppy_floppy_t *floppy = drive->driver_data; | |
725 | ide_hwif_t *hwif = drive->hwif; | |
1da177e4 | 726 | ide_handler_t *pkt_xfer_routine; |
790d1239 | 727 | u16 bcount; |
e5f9f5a8 | 728 | u8 dma; |
1da177e4 | 729 | |
1da177e4 | 730 | if (floppy->failed_pc == NULL && |
30d67099 | 731 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 LT |
732 | floppy->failed_pc = pc; |
733 | /* Set the current packet command */ | |
734 | floppy->pc = pc; | |
735 | ||
736 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES || | |
737 | test_bit(PC_ABORT, &pc->flags)) { | |
738 | /* | |
739 | * We will "abort" retrying a packet command in case | |
740 | * a legitimate error code was received. | |
741 | */ | |
742 | if (!test_bit(PC_ABORT, &pc->flags)) { | |
d652c138 BP |
743 | if (!test_bit(PC_SUPPRESS_ERROR, &pc->flags)) |
744 | ide_floppy_report_error(floppy, pc); | |
1da177e4 LT |
745 | /* Giving up */ |
746 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
747 | } | |
748 | floppy->failed_pc = NULL; | |
749 | pc->callback(drive); | |
750 | return ide_stopped; | |
751 | } | |
752 | ||
bcc77d9c | 753 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
754 | |
755 | pc->retries++; | |
756 | /* We haven't transferred any data yet */ | |
757 | pc->actually_transferred = 0; | |
758 | pc->current_position = pc->buffer; | |
790d1239 | 759 | bcount = min(pc->request_transfer, 63 * 1024); |
1da177e4 | 760 | |
7469aaf6 BZ |
761 | if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) |
762 | ide_dma_off(drive); | |
763 | ||
e5f9f5a8 | 764 | dma = 0; |
1da177e4 LT |
765 | |
766 | if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma) | |
e5f9f5a8 | 767 | dma = !hwif->dma_setup(drive); |
1da177e4 | 768 | |
2fc57388 BZ |
769 | ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK | |
770 | IDE_TFLAG_OUT_DEVICE, bcount, dma); | |
1da177e4 | 771 | |
e5f9f5a8 | 772 | if (dma) { /* Begin DMA, if necessary */ |
1da177e4 LT |
773 | set_bit(PC_DMA_IN_PROGRESS, &pc->flags); |
774 | hwif->dma_start(drive); | |
775 | } | |
776 | ||
777 | /* Can we transfer the packet when we get the interrupt or wait? */ | |
778 | if (test_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) { | |
779 | /* wait */ | |
780 | pkt_xfer_routine = &idefloppy_transfer_pc1; | |
781 | } else { | |
782 | /* immediate */ | |
783 | pkt_xfer_routine = &idefloppy_transfer_pc; | |
784 | } | |
785 | ||
786 | if (test_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) { | |
787 | /* Issue the packet command */ | |
788 | ide_execute_command(drive, WIN_PACKETCMD, | |
789 | pkt_xfer_routine, | |
790 | IDEFLOPPY_WAIT_CMD, | |
791 | NULL); | |
792 | return ide_started; | |
793 | } else { | |
794 | /* Issue the packet command */ | |
795 | HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG); | |
796 | return (*pkt_xfer_routine) (drive); | |
797 | } | |
798 | } | |
799 | ||
800 | static void idefloppy_rw_callback (ide_drive_t *drive) | |
801 | { | |
bcc77d9c | 802 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
803 | |
804 | idefloppy_do_end_request(drive, 1, 0); | |
805 | return; | |
806 | } | |
807 | ||
808 | static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent) | |
809 | { | |
bcc77d9c | 810 | debug_log("creating prevent removal command, prevent = %d\n", prevent); |
1da177e4 LT |
811 | |
812 | idefloppy_init_pc(pc); | |
30d67099 | 813 | pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
1da177e4 LT |
814 | pc->c[4] = prevent; |
815 | } | |
816 | ||
817 | static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc) | |
818 | { | |
819 | idefloppy_init_pc(pc); | |
30d67099 | 820 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
821 | pc->c[7] = 255; |
822 | pc->c[8] = 255; | |
823 | pc->request_transfer = 255; | |
824 | } | |
825 | ||
826 | static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l, | |
827 | int flags) | |
828 | { | |
829 | idefloppy_init_pc(pc); | |
30d67099 | 830 | pc->c[0] = GPCMD_FORMAT_UNIT; |
1da177e4 LT |
831 | pc->c[1] = 0x17; |
832 | ||
833 | memset(pc->buffer, 0, 12); | |
834 | pc->buffer[1] = 0xA2; | |
835 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ | |
836 | ||
837 | if (flags & 1) /* Verify bit on... */ | |
838 | pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */ | |
839 | pc->buffer[3] = 8; | |
840 | ||
8f622430 BP |
841 | put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buffer[4])); |
842 | put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buffer[8])); | |
1da177e4 LT |
843 | pc->buffer_size=12; |
844 | set_bit(PC_WRITING, &pc->flags); | |
845 | } | |
846 | ||
847 | /* | |
848 | * A mode sense command is used to "sense" floppy parameters. | |
849 | */ | |
850 | static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type) | |
851 | { | |
24a5d703 | 852 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
1da177e4 LT |
853 | |
854 | idefloppy_init_pc(pc); | |
30d67099 | 855 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 LT |
856 | pc->c[1] = 0; |
857 | pc->c[2] = page_code + (type << 6); | |
858 | ||
859 | switch (page_code) { | |
860 | case IDEFLOPPY_CAPABILITIES_PAGE: | |
861 | length += 12; | |
862 | break; | |
863 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
864 | length += 32; | |
865 | break; | |
866 | default: | |
867 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
868 | "in create_mode_sense_cmd\n"); | |
869 | } | |
8f622430 | 870 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
1da177e4 LT |
871 | pc->request_transfer = length; |
872 | } | |
873 | ||
874 | static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start) | |
875 | { | |
876 | idefloppy_init_pc(pc); | |
30d67099 | 877 | pc->c[0] = GPCMD_START_STOP_UNIT; |
1da177e4 LT |
878 | pc->c[4] = start; |
879 | } | |
880 | ||
881 | static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc) | |
882 | { | |
883 | idefloppy_init_pc(pc); | |
30d67099 | 884 | pc->c[0] = GPCMD_TEST_UNIT_READY; |
1da177e4 LT |
885 | } |
886 | ||
ae7e8ddc BP |
887 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
888 | idefloppy_pc_t *pc, struct request *rq, | |
889 | unsigned long sector) | |
1da177e4 LT |
890 | { |
891 | int block = sector / floppy->bs_factor; | |
892 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
893 | int cmd = rq_data_dir(rq); | |
894 | ||
ae7e8ddc | 895 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
896 | block, blocks); |
897 | ||
898 | idefloppy_init_pc(pc); | |
ae7e8ddc BP |
899 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
900 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 901 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 902 | |
1da177e4 LT |
903 | pc->callback = &idefloppy_rw_callback; |
904 | pc->rq = rq; | |
905 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; | |
4aff5e23 | 906 | if (rq->cmd_flags & REQ_RW) |
1da177e4 LT |
907 | set_bit(PC_WRITING, &pc->flags); |
908 | pc->buffer = NULL; | |
909 | pc->request_transfer = pc->buffer_size = blocks * floppy->block_size; | |
910 | set_bit(PC_DMA_RECOMMENDED, &pc->flags); | |
911 | } | |
912 | ||
3d6392cf | 913 | static void |
1da177e4 LT |
914 | idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq) |
915 | { | |
1da177e4 | 916 | idefloppy_init_pc(pc); |
3d6392cf | 917 | pc->callback = &idefloppy_rw_callback; |
1da177e4 | 918 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf JA |
919 | pc->rq = rq; |
920 | pc->b_count = rq->data_len; | |
921 | if (rq->data_len && rq_data_dir(rq) == WRITE) | |
922 | set_bit(PC_WRITING, &pc->flags); | |
923 | pc->buffer = rq->data; | |
924 | if (rq->bio) | |
925 | set_bit(PC_DMA_RECOMMENDED, &pc->flags); | |
926 | ||
927 | /* | |
928 | * possibly problematic, doesn't look like ide-floppy correctly | |
929 | * handled scattered requests if dma fails... | |
930 | */ | |
931 | pc->request_transfer = pc->buffer_size = rq->data_len; | |
1da177e4 LT |
932 | } |
933 | ||
934 | /* | |
935 | * idefloppy_do_request is our request handling function. | |
936 | */ | |
937 | static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, sector_t block_s) | |
938 | { | |
939 | idefloppy_floppy_t *floppy = drive->driver_data; | |
940 | idefloppy_pc_t *pc; | |
941 | unsigned long block = (unsigned long)block_s; | |
942 | ||
bcc77d9c | 943 | debug_log("dev: %s, cmd_type: %x, errors: %d\n", |
18cddac3 | 944 | rq->rq_disk ? rq->rq_disk->disk_name : "?", |
bcc77d9c BP |
945 | rq->cmd_type, rq->errors); |
946 | debug_log("sector: %ld, nr_sectors: %ld, " | |
1da177e4 LT |
947 | "current_nr_sectors: %d\n", (long)rq->sector, |
948 | rq->nr_sectors, rq->current_nr_sectors); | |
949 | ||
950 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
951 | if (floppy->failed_pc) |
952 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
953 | else |
954 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
955 | drive->name); | |
956 | idefloppy_do_end_request(drive, 0, 0); | |
957 | return ide_stopped; | |
958 | } | |
4aff5e23 | 959 | if (blk_fs_request(rq)) { |
1da177e4 LT |
960 | if (((long)rq->sector % floppy->bs_factor) || |
961 | (rq->nr_sectors % floppy->bs_factor)) { | |
962 | printk("%s: unsupported r/w request size\n", | |
963 | drive->name); | |
964 | idefloppy_do_end_request(drive, 0, 0); | |
965 | return ide_stopped; | |
966 | } | |
967 | pc = idefloppy_next_pc_storage(drive); | |
968 | idefloppy_create_rw_cmd(floppy, pc, rq, block); | |
4aff5e23 | 969 | } else if (blk_special_request(rq)) { |
1da177e4 | 970 | pc = (idefloppy_pc_t *) rq->buffer; |
4aff5e23 | 971 | } else if (blk_pc_request(rq)) { |
1da177e4 | 972 | pc = idefloppy_next_pc_storage(drive); |
3d6392cf | 973 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
974 | } else { |
975 | blk_dump_rq_flags(rq, | |
976 | "ide-floppy: unsupported command in queue"); | |
977 | idefloppy_do_end_request(drive, 0, 0); | |
978 | return ide_stopped; | |
979 | } | |
980 | ||
981 | pc->rq = rq; | |
982 | return idefloppy_issue_pc(drive, pc); | |
983 | } | |
984 | ||
985 | /* | |
986 | * idefloppy_queue_pc_tail adds a special packet command request to the | |
987 | * tail of the request queue, and waits for it to be serviced. | |
988 | */ | |
989 | static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc) | |
990 | { | |
991 | struct ide_floppy_obj *floppy = drive->driver_data; | |
992 | struct request rq; | |
993 | ||
994 | ide_init_drive_cmd (&rq); | |
995 | rq.buffer = (char *) pc; | |
4aff5e23 | 996 | rq.cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
997 | rq.rq_disk = floppy->disk; |
998 | ||
999 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
1000 | } | |
1001 | ||
1002 | /* | |
8e81bbba BP |
1003 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
1004 | * parameters and use the LBA parameters instead. | |
1da177e4 | 1005 | */ |
8e81bbba | 1006 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
1007 | { |
1008 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1009 | idefloppy_pc_t pc; | |
8e81bbba | 1010 | u8 *page; |
1da177e4 | 1011 | int capacity, lba_capacity; |
8e81bbba BP |
1012 | u16 transfer_rate, sector_size, cyls, rpm; |
1013 | u8 heads, sectors; | |
1da177e4 | 1014 | |
8e81bbba BP |
1015 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, |
1016 | MODE_SENSE_CURRENT); | |
1017 | ||
1018 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1019 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" | |
1020 | " parameters\n"); | |
1da177e4 LT |
1021 | return 1; |
1022 | } | |
24a5d703 | 1023 | floppy->wp = !!(pc.buffer[3] & 0x80); |
1da177e4 | 1024 | set_disk_ro(floppy->disk, floppy->wp); |
8e81bbba BP |
1025 | page = &pc.buffer[8]; |
1026 | ||
1027 | transfer_rate = be16_to_cpu(*(u16 *)&pc.buffer[8 + 2]); | |
1028 | sector_size = be16_to_cpu(*(u16 *)&pc.buffer[8 + 6]); | |
1029 | cyls = be16_to_cpu(*(u16 *)&pc.buffer[8 + 8]); | |
1030 | rpm = be16_to_cpu(*(u16 *)&pc.buffer[8 + 28]); | |
1031 | heads = pc.buffer[8 + 4]; | |
1032 | sectors = pc.buffer[8 + 5]; | |
1033 | ||
1034 | capacity = cyls * heads * sectors * sector_size; | |
1035 | ||
1036 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
1037 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
1038 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
1039 | drive->name, capacity / 1024, cyls, heads, |
1040 | sectors, transfer_rate / 8, sector_size, rpm); | |
1041 | ||
1042 | memcpy(&floppy->flexible_disk_page, page, 32); | |
1043 | drive->bios_cyl = cyls; | |
1044 | drive->bios_head = heads; | |
1045 | drive->bios_sect = sectors; | |
1da177e4 | 1046 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 1047 | |
1da177e4 LT |
1048 | if (capacity < lba_capacity) { |
1049 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
1050 | "bytes, but the drive only handles %d\n", | |
1051 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
1052 | floppy->blocks = floppy->block_size ? |
1053 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
1054 | } |
1055 | return 0; | |
1056 | } | |
1057 | ||
948391d1 | 1058 | static int idefloppy_get_sfrp_bit(ide_drive_t *drive) |
1da177e4 LT |
1059 | { |
1060 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1061 | idefloppy_pc_t pc; | |
1da177e4 LT |
1062 | |
1063 | floppy->srfp = 0; | |
1064 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, | |
1065 | MODE_SENSE_CURRENT); | |
1066 | ||
1067 | set_bit(PC_SUPPRESS_ERROR, &pc.flags); | |
948391d1 | 1068 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 1069 | return 1; |
1da177e4 | 1070 | |
948391d1 | 1071 | floppy->srfp = pc.buffer[8 + 2] & 0x40; |
1da177e4 LT |
1072 | return (0); |
1073 | } | |
1074 | ||
1075 | /* | |
194ec0c0 BP |
1076 | * Determine if a media is present in the floppy drive, and if so, its LBA |
1077 | * capacity. | |
1da177e4 | 1078 | */ |
194ec0c0 | 1079 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
1080 | { |
1081 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1082 | idefloppy_pc_t pc; | |
194ec0c0 BP |
1083 | u8 *cap_desc; |
1084 | u8 header_len, desc_cnt; | |
1085 | int i, rc = 1, blocks, length; | |
1086 | ||
1da177e4 LT |
1087 | drive->bios_cyl = 0; |
1088 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
1089 | floppy->blocks = 0; |
1090 | floppy->bs_factor = 1; | |
1da177e4 LT |
1091 | set_capacity(floppy->disk, 0); |
1092 | ||
1093 | idefloppy_create_read_capacity_cmd(&pc); | |
1094 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1095 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
1096 | return 1; | |
1097 | } | |
194ec0c0 BP |
1098 | header_len = pc.buffer[3]; |
1099 | cap_desc = &pc.buffer[4]; | |
1100 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ | |
1101 | ||
1102 | for (i = 0; i < desc_cnt; i++) { | |
1103 | unsigned int desc_start = 4 + i*8; | |
1104 | ||
1105 | blocks = be32_to_cpu(*(u32 *)&pc.buffer[desc_start]); | |
1106 | length = be16_to_cpu(*(u16 *)&pc.buffer[desc_start + 6]); | |
1107 | ||
1108 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
1109 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 1110 | |
194ec0c0 BP |
1111 | if (i) |
1112 | continue; | |
1113 | /* | |
1114 | * the code below is valid only for the 1st descriptor, ie i=0 | |
1115 | */ | |
1da177e4 | 1116 | |
194ec0c0 | 1117 | switch (pc.buffer[desc_start + 4] & 0x03) { |
1da177e4 LT |
1118 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
1119 | case CAPACITY_UNFORMATTED: | |
1120 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) | |
1121 | /* | |
1122 | * If it is not a clik drive, break out | |
1123 | * (maintains previous driver behaviour) | |
1124 | */ | |
1125 | break; | |
1126 | case CAPACITY_CURRENT: | |
1127 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 1128 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
1129 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
1130 | "sector size\n", drive->name, | |
1131 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
1132 | memcpy(&floppy->cap_desc, cap_desc, 8); |
1133 | ||
1da177e4 LT |
1134 | if (!length || length % 512) { |
1135 | printk(KERN_NOTICE "%s: %d bytes block size " | |
1136 | "not supported\n", drive->name, length); | |
1137 | } else { | |
194ec0c0 BP |
1138 | floppy->blocks = blocks; |
1139 | floppy->block_size = length; | |
1140 | floppy->bs_factor = length / 512; | |
1141 | if (floppy->bs_factor != 1) | |
1142 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
1143 | "512 bytes block size not " |
1144 | "fully supported\n", | |
1145 | drive->name); | |
194ec0c0 | 1146 | rc = 0; |
1da177e4 LT |
1147 | } |
1148 | break; | |
1149 | case CAPACITY_NO_CARTRIDGE: | |
1150 | /* | |
1151 | * This is a KERN_ERR so it appears on screen | |
1152 | * for the user to see | |
1153 | */ | |
1154 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
1155 | break; | |
1156 | case CAPACITY_INVALID: | |
1157 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
1158 | "in drive\n", drive->name); | |
1159 | break; | |
1160 | } | |
194ec0c0 BP |
1161 | debug_log("Descriptor 0 Code: %d\n", |
1162 | pc.buffer[desc_start + 4] & 0x03); | |
1da177e4 LT |
1163 | } |
1164 | ||
1165 | /* Clik! disk does not support get_flexible_disk_page */ | |
194ec0c0 | 1166 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) |
8e81bbba | 1167 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 LT |
1168 | |
1169 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); | |
1170 | return rc; | |
1171 | } | |
1172 | ||
1173 | /* | |
194ec0c0 BP |
1174 | * Obtain the list of formattable capacities. |
1175 | * Very similar to ide_floppy_get_capacity, except that we push the capacity | |
1176 | * descriptors to userland, instead of our own structures. | |
1177 | * | |
1178 | * Userland gives us the following structure: | |
1179 | * | |
1180 | * struct idefloppy_format_capacities { | |
1181 | * int nformats; | |
1182 | * struct { | |
1183 | * int nblocks; | |
1184 | * int blocksize; | |
1185 | * } formats[]; | |
1186 | * }; | |
1187 | * | |
1188 | * userland initializes nformats to the number of allocated formats[] records. | |
1189 | * On exit we set nformats to the number of records we've actually initialized. | |
1190 | */ | |
1da177e4 | 1191 | |
194ec0c0 | 1192 | static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
1da177e4 | 1193 | { |
194ec0c0 BP |
1194 | idefloppy_pc_t pc; |
1195 | u8 header_len, desc_cnt; | |
1196 | int i, blocks, length, u_array_size, u_index; | |
1da177e4 LT |
1197 | int __user *argp; |
1198 | ||
1199 | if (get_user(u_array_size, arg)) | |
1200 | return (-EFAULT); | |
1201 | ||
1202 | if (u_array_size <= 0) | |
1203 | return (-EINVAL); | |
1204 | ||
1205 | idefloppy_create_read_capacity_cmd(&pc); | |
1206 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1207 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
194ec0c0 BP |
1208 | return (-EIO); |
1209 | } | |
1210 | header_len = pc.buffer[3]; | |
1211 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ | |
1da177e4 LT |
1212 | |
1213 | u_index = 0; | |
1214 | argp = arg + 1; | |
1215 | ||
1216 | /* | |
194ec0c0 BP |
1217 | * We always skip the first capacity descriptor. That's the current |
1218 | * capacity. We are interested in the remaining descriptors, the | |
1219 | * formattable capacities. | |
1220 | */ | |
1221 | for (i = 1; i < desc_cnt; i++) { | |
1222 | unsigned int desc_start = 4 + i*8; | |
1da177e4 | 1223 | |
1da177e4 LT |
1224 | if (u_index >= u_array_size) |
1225 | break; /* User-supplied buffer too small */ | |
1da177e4 | 1226 | |
194ec0c0 BP |
1227 | blocks = be32_to_cpu(*(u32 *)&pc.buffer[desc_start]); |
1228 | length = be16_to_cpu(*(u16 *)&pc.buffer[desc_start + 6]); | |
1da177e4 LT |
1229 | |
1230 | if (put_user(blocks, argp)) | |
1231 | return(-EFAULT); | |
1232 | ++argp; | |
1233 | ||
1234 | if (put_user(length, argp)) | |
1235 | return (-EFAULT); | |
1236 | ++argp; | |
1237 | ||
1238 | ++u_index; | |
1239 | } | |
1240 | ||
1241 | if (put_user(u_index, arg)) | |
1242 | return (-EFAULT); | |
1243 | return (0); | |
1244 | } | |
1245 | ||
1da177e4 LT |
1246 | /* |
1247 | ** Get ATAPI_FORMAT_UNIT progress indication. | |
1248 | ** | |
0779bf2d | 1249 | ** Userland gives a pointer to an int. The int is set to a progress |
1da177e4 LT |
1250 | ** indicator 0-65536, with 65536=100%. |
1251 | ** | |
1252 | ** If the drive does not support format progress indication, we just check | |
1253 | ** the dsc bit, and return either 0 or 65536. | |
1254 | */ | |
1255 | ||
1256 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) | |
1257 | { | |
1258 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1259 | idefloppy_pc_t pc; | |
1260 | int progress_indication = 0x10000; | |
1261 | ||
1262 | if (floppy->srfp) { | |
1263 | idefloppy_create_request_sense_cmd(&pc); | |
1264 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1265 | return (-EIO); | |
1266 | } | |
1267 | ||
1268 | if (floppy->sense_key == 2 && | |
1269 | floppy->asc == 4 && | |
1270 | floppy->ascq == 4) { | |
1271 | progress_indication = floppy->progress_indication; | |
1272 | } | |
1273 | /* Else assume format_unit has finished, and we're | |
1274 | ** at 0x10000 */ | |
1275 | } else { | |
1da177e4 | 1276 | unsigned long flags; |
22c525b9 | 1277 | u8 stat; |
1da177e4 LT |
1278 | |
1279 | local_irq_save(flags); | |
22c525b9 | 1280 | stat = drive->hwif->INB(IDE_STATUS_REG); |
1da177e4 LT |
1281 | local_irq_restore(flags); |
1282 | ||
22c525b9 | 1283 | progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000; |
1da177e4 LT |
1284 | } |
1285 | if (put_user(progress_indication, arg)) | |
1286 | return (-EFAULT); | |
1287 | ||
1288 | return (0); | |
1289 | } | |
1290 | ||
1291 | /* | |
1292 | * Return the current floppy capacity. | |
1293 | */ | |
1294 | static sector_t idefloppy_capacity (ide_drive_t *drive) | |
1295 | { | |
1296 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1297 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
1298 | ||
1299 | return capacity; | |
1300 | } | |
1301 | ||
1302 | /* | |
f373bd82 BP |
1303 | * Check whether we can support a drive, based on the ATAPI IDENTIFY command |
1304 | * results. | |
1da177e4 | 1305 | */ |
f373bd82 | 1306 | static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id) |
1da177e4 LT |
1307 | { |
1308 | struct idefloppy_id_gcw gcw; | |
1da177e4 LT |
1309 | |
1310 | *((u16 *) &gcw) = id->config; | |
1311 | ||
1312 | #ifdef CONFIG_PPC | |
1313 | /* kludge for Apple PowerBook internal zip */ | |
1314 | if ((gcw.device_type == 5) && | |
1315 | !strstr(id->model, "CD-ROM") && | |
1316 | strstr(id->model, "ZIP")) | |
f373bd82 | 1317 | gcw.device_type = 0; |
1da177e4 LT |
1318 | #endif |
1319 | ||
1da177e4 | 1320 | if (gcw.protocol != 2) |
f373bd82 BP |
1321 | printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n", |
1322 | gcw.protocol); | |
1da177e4 | 1323 | else if (gcw.device_type != 0) |
f373bd82 BP |
1324 | printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set " |
1325 | "to floppy\n", gcw.device_type); | |
1da177e4 LT |
1326 | else if (!gcw.removable) |
1327 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); | |
1328 | else if (gcw.drq_type == 3) { | |
f373bd82 BP |
1329 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not " |
1330 | "supported\n", gcw.drq_type); | |
1da177e4 | 1331 | } else if (gcw.packet_size != 0) { |
f373bd82 BP |
1332 | printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 " |
1333 | "bytes long\n", gcw.packet_size); | |
1da177e4 LT |
1334 | } else |
1335 | return 1; | |
1336 | return 0; | |
1337 | } | |
1338 | ||
7662d046 | 1339 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1340 | static void idefloppy_add_settings(ide_drive_t *drive) |
1341 | { | |
1342 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1343 | ||
1344 | /* | |
1497943e | 1345 | * drive setting name read/write data type min max mul_factor div_factor data pointer set function |
1da177e4 | 1346 | */ |
1497943e BZ |
1347 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL); |
1348 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); | |
1349 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); | |
1350 | ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL); | |
1da177e4 | 1351 | } |
7662d046 BZ |
1352 | #else |
1353 | static inline void idefloppy_add_settings(ide_drive_t *drive) { ; } | |
1354 | #endif | |
1da177e4 LT |
1355 | |
1356 | /* | |
1357 | * Driver initialization. | |
1358 | */ | |
1359 | static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy) | |
1360 | { | |
1361 | struct idefloppy_id_gcw gcw; | |
1362 | ||
1363 | *((u16 *) &gcw) = drive->id->config; | |
1364 | floppy->pc = floppy->pc_stack; | |
1365 | if (gcw.drq_type == 1) | |
1366 | set_bit(IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags); | |
1367 | /* | |
1368 | * We used to check revisions here. At this point however | |
1369 | * I'm giving up. Just assume they are all broken, its easier. | |
1370 | * | |
1371 | * The actual reason for the workarounds was likely | |
1372 | * a driver bug after all rather than a firmware bug, | |
1373 | * and the workaround below used to hide it. It should | |
1374 | * be fixed as of version 1.9, but to be on the safe side | |
1375 | * we'll leave the limitation below for the 2.2.x tree. | |
1376 | */ | |
1377 | ||
1378 | if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { | |
1379 | set_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags); | |
1380 | /* This value will be visible in the /proc/ide/hdx/settings */ | |
1381 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
1382 | blk_queue_max_sectors(drive->queue, 64); | |
1383 | } | |
1384 | ||
1385 | /* | |
1386 | * Guess what? The IOMEGA Clik! drive also needs the | |
1387 | * above fix. It makes nasty clicking noises without | |
1388 | * it, so please don't remove this. | |
1389 | */ | |
1390 | if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { | |
1391 | blk_queue_max_sectors(drive->queue, 64); | |
1392 | set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags); | |
1393 | } | |
1394 | ||
1395 | ||
194ec0c0 | 1396 | (void) ide_floppy_get_capacity(drive); |
1da177e4 LT |
1397 | idefloppy_add_settings(drive); |
1398 | } | |
1399 | ||
4031bbe4 | 1400 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
1401 | { |
1402 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1403 | struct gendisk *g = floppy->disk; | |
1404 | ||
7662d046 | 1405 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
1406 | |
1407 | del_gendisk(g); | |
1408 | ||
1409 | ide_floppy_put(floppy); | |
1da177e4 LT |
1410 | } |
1411 | ||
9a24b63d | 1412 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 LT |
1413 | { |
1414 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
1415 | ide_drive_t *drive = floppy->drive; | |
1416 | struct gendisk *g = floppy->disk; | |
1417 | ||
1418 | drive->driver_data = NULL; | |
1419 | g->private_data = NULL; | |
1420 | put_disk(g); | |
1421 | kfree(floppy); | |
1422 | } | |
1423 | ||
ecfd80e4 | 1424 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1425 | static int proc_idefloppy_read_capacity |
1426 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
1427 | { | |
1428 | ide_drive_t*drive = (ide_drive_t *)data; | |
1429 | int len; | |
1430 | ||
1431 | len = sprintf(page,"%llu\n", (long long)idefloppy_capacity(drive)); | |
1432 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
1433 | } | |
1434 | ||
1435 | static ide_proc_entry_t idefloppy_proc[] = { | |
1436 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, | |
1437 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1438 | { NULL, 0, NULL, NULL } | |
1439 | }; | |
ecfd80e4 | 1440 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 1441 | |
4031bbe4 | 1442 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 1443 | |
1da177e4 | 1444 | static ide_driver_t idefloppy_driver = { |
8604affd | 1445 | .gen_driver = { |
4ef3b8f4 | 1446 | .owner = THIS_MODULE, |
8604affd BZ |
1447 | .name = "ide-floppy", |
1448 | .bus = &ide_bus_type, | |
8604affd | 1449 | }, |
4031bbe4 RK |
1450 | .probe = ide_floppy_probe, |
1451 | .remove = ide_floppy_remove, | |
1da177e4 LT |
1452 | .version = IDEFLOPPY_VERSION, |
1453 | .media = ide_floppy, | |
1da177e4 | 1454 | .supports_dsc_overlap = 0, |
1da177e4 LT |
1455 | .do_request = idefloppy_do_request, |
1456 | .end_request = idefloppy_do_end_request, | |
1457 | .error = __ide_error, | |
1458 | .abort = __ide_abort, | |
7662d046 | 1459 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1460 | .proc = idefloppy_proc, |
7662d046 | 1461 | #endif |
1da177e4 LT |
1462 | }; |
1463 | ||
1464 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
1465 | { | |
1466 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1467 | struct ide_floppy_obj *floppy; | |
1468 | ide_drive_t *drive; | |
1469 | idefloppy_pc_t pc; | |
1470 | int ret = 0; | |
1471 | ||
bcc77d9c | 1472 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
1473 | |
1474 | if (!(floppy = ide_floppy_get(disk))) | |
1475 | return -ENXIO; | |
1476 | ||
1477 | drive = floppy->drive; | |
1478 | ||
c94964a4 | 1479 | floppy->openers++; |
1da177e4 | 1480 | |
c94964a4 | 1481 | if (floppy->openers == 1) { |
1da177e4 LT |
1482 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
1483 | /* Just in case */ | |
1484 | ||
1485 | idefloppy_create_test_unit_ready_cmd(&pc); | |
1486 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1487 | idefloppy_create_start_stop_cmd(&pc, 1); | |
1488 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1489 | } | |
1490 | ||
194ec0c0 | 1491 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
1492 | && (filp->f_flags & O_NDELAY) == 0 |
1493 | /* | |
1494 | ** Allow O_NDELAY to open a drive without a disk, or with | |
1495 | ** an unreadable disk, so that we can get the format | |
1496 | ** capacity of the drive or begin the format - Sam | |
1497 | */ | |
1498 | ) { | |
1da177e4 LT |
1499 | ret = -EIO; |
1500 | goto out_put_floppy; | |
1501 | } | |
1502 | ||
1503 | if (floppy->wp && (filp->f_mode & 2)) { | |
1da177e4 LT |
1504 | ret = -EROFS; |
1505 | goto out_put_floppy; | |
1506 | } | |
1507 | set_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); | |
1508 | /* IOMEGA Clik! drives do not support lock/unlock commands */ | |
1509 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
1510 | idefloppy_create_prevent_cmd(&pc, 1); | |
1511 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1512 | } | |
1513 | check_disk_change(inode->i_bdev); | |
1514 | } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) { | |
1da177e4 LT |
1515 | ret = -EBUSY; |
1516 | goto out_put_floppy; | |
1517 | } | |
1518 | return 0; | |
1519 | ||
1520 | out_put_floppy: | |
c94964a4 | 1521 | floppy->openers--; |
1da177e4 LT |
1522 | ide_floppy_put(floppy); |
1523 | return ret; | |
1524 | } | |
1525 | ||
1526 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
1527 | { | |
1528 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1529 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1530 | ide_drive_t *drive = floppy->drive; | |
1531 | idefloppy_pc_t pc; | |
bcc77d9c BP |
1532 | |
1533 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 1534 | |
c94964a4 | 1535 | if (floppy->openers == 1) { |
1da177e4 LT |
1536 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
1537 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
1538 | idefloppy_create_prevent_cmd(&pc, 0); | |
1539 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1540 | } | |
1541 | ||
1542 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
1543 | } | |
c94964a4 BZ |
1544 | |
1545 | floppy->openers--; | |
1da177e4 LT |
1546 | |
1547 | ide_floppy_put(floppy); | |
1548 | ||
1549 | return 0; | |
1550 | } | |
1551 | ||
a885c8c4 CH |
1552 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1553 | { | |
1554 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1555 | ide_drive_t *drive = floppy->drive; | |
1556 | ||
1557 | geo->heads = drive->bios_head; | |
1558 | geo->sectors = drive->bios_sect; | |
1559 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1560 | return 0; | |
1561 | } | |
1562 | ||
20bf7bda BP |
1563 | static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, |
1564 | unsigned long arg, unsigned int cmd) | |
1565 | { | |
1566 | if (floppy->openers > 1) | |
1567 | return -EBUSY; | |
1568 | ||
1569 | /* The IOMEGA Clik! Drive doesn't support this command - | |
1570 | * no room for an eject mechanism */ | |
1571 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
1572 | int prevent = arg ? 1 : 0; | |
1573 | ||
1574 | if (cmd == CDROMEJECT) | |
1575 | prevent = 0; | |
1576 | ||
1577 | idefloppy_create_prevent_cmd(pc, prevent); | |
1578 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1579 | } | |
1580 | ||
1581 | if (cmd == CDROMEJECT) { | |
1582 | idefloppy_create_start_stop_cmd(pc, 2); | |
1583 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1584 | } | |
1585 | ||
1586 | return 0; | |
1587 | } | |
1588 | ||
1589 | static int ide_floppy_format_unit(idefloppy_floppy_t *floppy, | |
1590 | int __user *arg) | |
1591 | { | |
1592 | int blocks, length, flags, err = 0; | |
1593 | idefloppy_pc_t pc; | |
1594 | ||
1595 | if (floppy->openers > 1) { | |
1596 | /* Don't format if someone is using the disk */ | |
1597 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
1598 | return -EBUSY; | |
1599 | } | |
1600 | ||
1601 | set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
1602 | ||
1603 | /* | |
1604 | * Send ATAPI_FORMAT_UNIT to the drive. | |
1605 | * | |
1606 | * Userland gives us the following structure: | |
1607 | * | |
1608 | * struct idefloppy_format_command { | |
1609 | * int nblocks; | |
1610 | * int blocksize; | |
1611 | * int flags; | |
1612 | * } ; | |
1613 | * | |
1614 | * flags is a bitmask, currently, the only defined flag is: | |
1615 | * | |
1616 | * 0x01 - verify media after format. | |
1617 | */ | |
1618 | if (get_user(blocks, arg) || | |
1619 | get_user(length, arg+1) || | |
1620 | get_user(flags, arg+2)) { | |
1621 | err = -EFAULT; | |
1622 | goto out; | |
1623 | } | |
1624 | ||
1625 | (void) idefloppy_get_sfrp_bit(floppy->drive); | |
1626 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); | |
1627 | ||
1628 | if (idefloppy_queue_pc_tail(floppy->drive, &pc)) | |
1629 | err = -EIO; | |
1630 | ||
1631 | out: | |
1632 | if (err) | |
1633 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
1634 | return err; | |
1635 | } | |
1636 | ||
1637 | ||
1da177e4 LT |
1638 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
1639 | unsigned int cmd, unsigned long arg) | |
1640 | { | |
1641 | struct block_device *bdev = inode->i_bdev; | |
1642 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1643 | ide_drive_t *drive = floppy->drive; | |
20bf7bda | 1644 | idefloppy_pc_t pc; |
1da177e4 | 1645 | void __user *argp = (void __user *)arg; |
07203f64 | 1646 | int err; |
1da177e4 LT |
1647 | |
1648 | switch (cmd) { | |
1649 | case CDROMEJECT: | |
1da177e4 LT |
1650 | /* fall through */ |
1651 | case CDROM_LOCKDOOR: | |
20bf7bda | 1652 | return ide_floppy_lockdoor(floppy, &pc, arg, cmd); |
1da177e4 LT |
1653 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: |
1654 | return 0; | |
1655 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
194ec0c0 | 1656 | return ide_floppy_get_format_capacities(drive, argp); |
1da177e4 | 1657 | case IDEFLOPPY_IOCTL_FORMAT_START: |
1da177e4 LT |
1658 | if (!(file->f_mode & 2)) |
1659 | return -EPERM; | |
1660 | ||
20bf7bda | 1661 | return ide_floppy_format_unit(floppy, (int __user *)arg); |
1da177e4 LT |
1662 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: |
1663 | return idefloppy_get_format_progress(drive, argp); | |
1664 | } | |
89636af2 BZ |
1665 | |
1666 | /* | |
1667 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
1668 | * and CDROM_SEND_PACKET (legacy) ioctls | |
1669 | */ | |
1670 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
1671 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
1672 | bdev->bd_disk, cmd, argp); | |
1673 | else | |
1674 | err = -ENOTTY; | |
1675 | ||
1676 | if (err == -ENOTTY) | |
1677 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1678 | ||
1679 | return err; | |
1da177e4 LT |
1680 | } |
1681 | ||
1682 | static int idefloppy_media_changed(struct gendisk *disk) | |
1683 | { | |
1684 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1685 | ide_drive_t *drive = floppy->drive; | |
1686 | ||
1687 | /* do not scan partitions twice if this is a removable device */ | |
1688 | if (drive->attach) { | |
1689 | drive->attach = 0; | |
1690 | return 0; | |
1691 | } | |
1692 | return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); | |
1693 | } | |
1694 | ||
1695 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
1696 | { | |
1697 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1698 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
1699 | return 0; | |
1700 | } | |
1701 | ||
1702 | static struct block_device_operations idefloppy_ops = { | |
1703 | .owner = THIS_MODULE, | |
1704 | .open = idefloppy_open, | |
1705 | .release = idefloppy_release, | |
1706 | .ioctl = idefloppy_ioctl, | |
a885c8c4 | 1707 | .getgeo = idefloppy_getgeo, |
1da177e4 LT |
1708 | .media_changed = idefloppy_media_changed, |
1709 | .revalidate_disk= idefloppy_revalidate_disk | |
1710 | }; | |
1711 | ||
4031bbe4 | 1712 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
1713 | { |
1714 | idefloppy_floppy_t *floppy; | |
1715 | struct gendisk *g; | |
1716 | ||
1717 | if (!strstr("ide-floppy", drive->driver_req)) | |
1718 | goto failed; | |
1719 | if (!drive->present) | |
1720 | goto failed; | |
1721 | if (drive->media != ide_floppy) | |
1722 | goto failed; | |
1723 | if (!idefloppy_identify_device (drive, drive->id)) { | |
1724 | printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name); | |
1725 | goto failed; | |
1726 | } | |
1727 | if (drive->scsi) { | |
1728 | printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name); | |
1729 | goto failed; | |
1730 | } | |
5cbded58 | 1731 | if ((floppy = kzalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) { |
1da177e4 LT |
1732 | printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name); |
1733 | goto failed; | |
1734 | } | |
1735 | ||
1736 | g = alloc_disk(1 << PARTN_BITS); | |
1737 | if (!g) | |
1738 | goto out_free_floppy; | |
1739 | ||
1740 | ide_init_disk(g, drive); | |
1741 | ||
7662d046 | 1742 | ide_proc_register_driver(drive, &idefloppy_driver); |
1da177e4 | 1743 | |
1da177e4 LT |
1744 | kref_init(&floppy->kref); |
1745 | ||
1746 | floppy->drive = drive; | |
1747 | floppy->driver = &idefloppy_driver; | |
1748 | floppy->disk = g; | |
1749 | ||
1750 | g->private_data = &floppy->driver; | |
1751 | ||
1752 | drive->driver_data = floppy; | |
1753 | ||
1da177e4 | 1754 | idefloppy_setup (drive, floppy); |
8604affd | 1755 | |
1da177e4 LT |
1756 | g->minors = 1 << PARTN_BITS; |
1757 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
1758 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
1759 | g->fops = &idefloppy_ops; | |
1760 | drive->attach = 1; | |
1761 | add_disk(g); | |
1762 | return 0; | |
1763 | ||
1da177e4 LT |
1764 | out_free_floppy: |
1765 | kfree(floppy); | |
1766 | failed: | |
8604affd | 1767 | return -ENODEV; |
1da177e4 LT |
1768 | } |
1769 | ||
1770 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); | |
1771 | ||
1772 | static void __exit idefloppy_exit (void) | |
1773 | { | |
8604affd | 1774 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1775 | } |
1776 | ||
17514e8a | 1777 | static int __init idefloppy_init(void) |
1da177e4 LT |
1778 | { |
1779 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 1780 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1781 | } |
1782 | ||
263756ec | 1783 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
1784 | module_init(idefloppy_init); |
1785 | module_exit(idefloppy_exit); | |
1786 | MODULE_LICENSE("GPL"); |