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Commit | Line | Data |
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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 | 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 | ||
6e5fa7b8 BP |
107 | /* Packet command flag bits. */ |
108 | enum { | |
109 | /* 1 when we prefer to use DMA if possible */ | |
110 | PC_FLAG_DMA_RECOMMENDED = (1 << 0), | |
111 | /* 1 while DMA in progress */ | |
112 | PC_FLAG_DMA_IN_PROGRESS = (1 << 1), | |
113 | /* 1 when encountered problem during DMA */ | |
114 | PC_FLAG_DMA_ERROR = (1 << 2), | |
115 | /* Data direction */ | |
116 | PC_FLAG_WRITING = (1 << 3), | |
117 | /* Suppress error reporting */ | |
118 | PC_FLAG_SUPPRESS_ERROR = (1 << 4), | |
119 | }; | |
1da177e4 | 120 | |
194ec0c0 | 121 | /* format capacities descriptor codes */ |
1da177e4 LT |
122 | #define CAPACITY_INVALID 0x00 |
123 | #define CAPACITY_UNFORMATTED 0x01 | |
124 | #define CAPACITY_CURRENT 0x02 | |
125 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
126 | ||
127 | /* | |
128 | * Most of our global data which we need to save even as we leave the | |
129 | * driver due to an interrupt or a timer event is stored in a variable | |
130 | * of type idefloppy_floppy_t, defined below. | |
131 | */ | |
132 | typedef struct ide_floppy_obj { | |
133 | ide_drive_t *drive; | |
134 | ide_driver_t *driver; | |
135 | struct gendisk *disk; | |
136 | struct kref kref; | |
c94964a4 | 137 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
138 | |
139 | /* Current packet command */ | |
140 | idefloppy_pc_t *pc; | |
141 | /* Last failed packet command */ | |
142 | idefloppy_pc_t *failed_pc; | |
143 | /* Packet command stack */ | |
144 | idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK]; | |
145 | /* Next free packet command storage space */ | |
146 | int pc_stack_index; | |
147 | struct request rq_stack[IDEFLOPPY_PC_STACK]; | |
148 | /* We implement a circular array */ | |
149 | int rq_stack_index; | |
150 | ||
151 | /* | |
152 | * Last error information | |
153 | */ | |
154 | u8 sense_key, asc, ascq; | |
155 | /* delay this long before sending packet command */ | |
156 | u8 ticks; | |
157 | int progress_indication; | |
158 | ||
159 | /* | |
160 | * Device information | |
161 | */ | |
162 | /* Current format */ | |
163 | int blocks, block_size, bs_factor; | |
194ec0c0 BP |
164 | /* Last format capacity descriptor */ |
165 | u8 cap_desc[8]; | |
1da177e4 | 166 | /* Copy of the flexible disk page */ |
8e81bbba | 167 | u8 flexible_disk_page[32]; |
1da177e4 LT |
168 | /* Write protect */ |
169 | int wp; | |
170 | /* Supports format progress report */ | |
171 | int srfp; | |
172 | /* Status/Action flags */ | |
173 | unsigned long flags; | |
174 | } idefloppy_floppy_t; | |
175 | ||
c40d3d38 | 176 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 | 177 | |
6e5fa7b8 BP |
178 | /* Floppy flag bits values. */ |
179 | enum { | |
180 | /* DRQ interrupt device */ | |
181 | IDEFLOPPY_FLAG_DRQ_INTERRUPT = (1 << 0), | |
182 | /* Media may have changed */ | |
183 | IDEFLOPPY_FLAG_MEDIA_CHANGED = (1 << 1), | |
184 | /* Format in progress */ | |
185 | IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS = (1 << 2), | |
186 | /* Avoid commands not supported in Clik drive */ | |
187 | IDEFLOPPY_FLAG_CLIK_DRIVE = (1 << 3), | |
188 | /* Requires BH algorithm for packets */ | |
189 | IDEFLOPPY_FLAG_ZIP_DRIVE = (1 << 4), | |
190 | }; | |
1da177e4 | 191 | |
1da177e4 LT |
192 | /* |
193 | * Defines for the mode sense command | |
194 | */ | |
195 | #define MODE_SENSE_CURRENT 0x00 | |
196 | #define MODE_SENSE_CHANGEABLE 0x01 | |
197 | #define MODE_SENSE_DEFAULT 0x02 | |
198 | #define MODE_SENSE_SAVED 0x03 | |
199 | ||
200 | /* | |
201 | * IOCTLs used in low-level formatting. | |
202 | */ | |
203 | ||
204 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 | |
205 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 | |
206 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 | |
207 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 | |
208 | ||
1da177e4 LT |
209 | /* |
210 | * Error codes which are returned in rq->errors to the higher part | |
211 | * of the driver. | |
212 | */ | |
213 | #define IDEFLOPPY_ERROR_GENERAL 101 | |
214 | ||
215 | /* | |
216 | * The following is used to format the general configuration word of | |
217 | * the ATAPI IDENTIFY DEVICE command. | |
218 | */ | |
219 | struct idefloppy_id_gcw { | |
220 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
221 | unsigned packet_size :2; /* Packet Size */ | |
222 | unsigned reserved234 :3; /* Reserved */ | |
223 | unsigned drq_type :2; /* Command packet DRQ type */ | |
224 | unsigned removable :1; /* Removable media */ | |
225 | unsigned device_type :5; /* Device type */ | |
226 | unsigned reserved13 :1; /* Reserved */ | |
227 | unsigned protocol :2; /* Protocol type */ | |
228 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
229 | unsigned protocol :2; /* Protocol type */ | |
230 | unsigned reserved13 :1; /* Reserved */ | |
231 | unsigned device_type :5; /* Device type */ | |
232 | unsigned removable :1; /* Removable media */ | |
233 | unsigned drq_type :2; /* Command packet DRQ type */ | |
234 | unsigned reserved234 :3; /* Reserved */ | |
235 | unsigned packet_size :2; /* Packet Size */ | |
236 | #else | |
237 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
238 | #endif | |
239 | }; | |
240 | ||
1da177e4 | 241 | /* |
948391d1 BP |
242 | * Pages of the SELECT SENSE / MODE SENSE packet commands. |
243 | * See SFF-8070i spec. | |
1da177e4 LT |
244 | */ |
245 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b | |
246 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 | |
247 | ||
cf8b8975 | 248 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
249 | |
250 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
251 | ||
252 | #define ide_floppy_g(disk) \ | |
253 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
254 | ||
255 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) | |
256 | { | |
257 | struct ide_floppy_obj *floppy = NULL; | |
258 | ||
cf8b8975 | 259 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 LT |
260 | floppy = ide_floppy_g(disk); |
261 | if (floppy) | |
262 | kref_get(&floppy->kref); | |
cf8b8975 | 263 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
264 | return floppy; |
265 | } | |
266 | ||
9a24b63d | 267 | static void idefloppy_cleanup_obj(struct kref *); |
1da177e4 LT |
268 | |
269 | static void ide_floppy_put(struct ide_floppy_obj *floppy) | |
270 | { | |
cf8b8975 | 271 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 272 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
cf8b8975 | 273 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
274 | } |
275 | ||
276 | /* | |
277 | * Too bad. The drive wants to send us data which we are not ready to accept. | |
278 | * Just throw it away. | |
279 | */ | |
280 | static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount) | |
281 | { | |
282 | while (bcount--) | |
283 | (void) HWIF(drive)->INB(IDE_DATA_REG); | |
284 | } | |
285 | ||
0bf399e6 | 286 | static void idefloppy_write_zeros(ide_drive_t *drive, unsigned int bcount) |
1da177e4 LT |
287 | { |
288 | while (bcount--) | |
289 | HWIF(drive)->OUTB(0, IDE_DATA_REG); | |
290 | } | |
1da177e4 LT |
291 | |
292 | ||
293 | /* | |
294 | * idefloppy_do_end_request is used to finish servicing a request. | |
295 | * | |
296 | * For read/write requests, we will call ide_end_request to pass to the | |
297 | * next buffer. | |
298 | */ | |
299 | static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs) | |
300 | { | |
301 | idefloppy_floppy_t *floppy = drive->driver_data; | |
302 | struct request *rq = HWGROUP(drive)->rq; | |
303 | int error; | |
304 | ||
bcc77d9c | 305 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
306 | |
307 | switch (uptodate) { | |
308 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; | |
309 | case 1: error = 0; break; | |
310 | default: error = uptodate; | |
311 | } | |
312 | if (error) | |
313 | floppy->failed_pc = NULL; | |
314 | /* Why does this happen? */ | |
315 | if (!rq) | |
316 | return 0; | |
4aff5e23 | 317 | if (!blk_special_request(rq)) { |
1da177e4 LT |
318 | /* our real local end request function */ |
319 | ide_end_request(drive, uptodate, nsecs); | |
320 | return 0; | |
321 | } | |
322 | rq->errors = error; | |
323 | /* fixme: need to move this local also */ | |
324 | ide_end_drive_cmd(drive, 0, 0); | |
325 | return 0; | |
326 | } | |
327 | ||
32925e1a BP |
328 | static void ide_floppy_io_buffers(ide_drive_t *drive, idefloppy_pc_t *pc, |
329 | unsigned int bcount, int direction) | |
1da177e4 LT |
330 | { |
331 | struct request *rq = pc->rq; | |
5705f702 | 332 | struct req_iterator iter; |
1da177e4 LT |
333 | struct bio_vec *bvec; |
334 | unsigned long flags; | |
5705f702 | 335 | int count, done = 0; |
1da177e4 LT |
336 | char *data; |
337 | ||
5705f702 | 338 | rq_for_each_segment(bvec, rq, iter) { |
6c92e699 JA |
339 | if (!bcount) |
340 | break; | |
1da177e4 | 341 | |
6c92e699 | 342 | count = min(bvec->bv_len, bcount); |
1da177e4 | 343 | |
6c92e699 | 344 | data = bvec_kmap_irq(bvec, &flags); |
32925e1a BP |
345 | if (direction) |
346 | drive->hwif->atapi_output_bytes(drive, data, count); | |
347 | else | |
348 | drive->hwif->atapi_input_bytes(drive, data, count); | |
6c92e699 | 349 | bvec_kunmap_irq(data, &flags); |
1da177e4 | 350 | |
6c92e699 JA |
351 | bcount -= count; |
352 | pc->b_count += count; | |
353 | done += count; | |
1da177e4 LT |
354 | } |
355 | ||
356 | idefloppy_do_end_request(drive, 1, done >> 9); | |
357 | ||
358 | if (bcount) { | |
32925e1a BP |
359 | printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n", |
360 | drive->name, __func__, bcount); | |
361 | if (direction) | |
362 | idefloppy_write_zeros(drive, bcount); | |
363 | else | |
364 | idefloppy_discard_data(drive, bcount); | |
365 | ||
1da177e4 LT |
366 | } |
367 | } | |
368 | ||
369 | static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc) | |
370 | { | |
371 | struct request *rq = pc->rq; | |
372 | struct bio *bio = rq->bio; | |
373 | ||
374 | while ((bio = rq->bio) != NULL) | |
375 | idefloppy_do_end_request(drive, 1, 0); | |
376 | } | |
377 | ||
378 | /* | |
379 | * idefloppy_queue_pc_head generates a new packet command request in front | |
380 | * of the request queue, before the current request, so that it will be | |
381 | * processed immediately, on the next pass through the driver. | |
382 | */ | |
383 | static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq) | |
384 | { | |
385 | struct ide_floppy_obj *floppy = drive->driver_data; | |
386 | ||
387 | ide_init_drive_cmd(rq); | |
388 | rq->buffer = (char *) pc; | |
4aff5e23 | 389 | rq->cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
390 | rq->rq_disk = floppy->disk; |
391 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
392 | } | |
393 | ||
394 | static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive) | |
395 | { | |
396 | idefloppy_floppy_t *floppy = drive->driver_data; | |
397 | ||
398 | if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK) | |
399 | floppy->pc_stack_index=0; | |
400 | return (&floppy->pc_stack[floppy->pc_stack_index++]); | |
401 | } | |
402 | ||
403 | static struct request *idefloppy_next_rq_storage (ide_drive_t *drive) | |
404 | { | |
405 | idefloppy_floppy_t *floppy = drive->driver_data; | |
406 | ||
407 | if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) | |
408 | floppy->rq_stack_index = 0; | |
409 | return (&floppy->rq_stack[floppy->rq_stack_index++]); | |
410 | } | |
411 | ||
a6ff2d3b | 412 | static void idefloppy_request_sense_callback(ide_drive_t *drive) |
1da177e4 LT |
413 | { |
414 | idefloppy_floppy_t *floppy = drive->driver_data; | |
a6ff2d3b | 415 | u8 *buf = floppy->pc->buffer; |
1da177e4 | 416 | |
bcc77d9c BP |
417 | debug_log("Reached %s\n", __func__); |
418 | ||
1da177e4 | 419 | if (!floppy->pc->error) { |
a6ff2d3b BP |
420 | floppy->sense_key = buf[2] & 0x0F; |
421 | floppy->asc = buf[12]; | |
422 | floppy->ascq = buf[13]; | |
423 | floppy->progress_indication = buf[15] & 0x80 ? | |
424 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
425 | ||
426 | if (floppy->failed_pc) | |
427 | debug_log("pc = %x, sense key = %x, asc = %x," | |
428 | " ascq = %x\n", | |
429 | floppy->failed_pc->c[0], | |
430 | floppy->sense_key, | |
431 | floppy->asc, | |
432 | floppy->ascq); | |
433 | else | |
434 | debug_log("sense key = %x, asc = %x, ascq = %x\n", | |
435 | floppy->sense_key, | |
436 | floppy->asc, | |
437 | floppy->ascq); | |
438 | ||
439 | ||
1da177e4 LT |
440 | idefloppy_do_end_request(drive, 1, 0); |
441 | } else { | |
a6ff2d3b BP |
442 | printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting" |
443 | " request!\n"); | |
1da177e4 LT |
444 | idefloppy_do_end_request(drive, 0, 0); |
445 | } | |
446 | } | |
447 | ||
448 | /* | |
449 | * General packet command callback function. | |
450 | */ | |
451 | static void idefloppy_pc_callback (ide_drive_t *drive) | |
452 | { | |
453 | idefloppy_floppy_t *floppy = drive->driver_data; | |
bcc77d9c BP |
454 | |
455 | debug_log("Reached %s\n", __func__); | |
1da177e4 LT |
456 | |
457 | idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0); | |
458 | } | |
459 | ||
460 | /* | |
461 | * idefloppy_init_pc initializes a packet command. | |
462 | */ | |
463 | static void idefloppy_init_pc (idefloppy_pc_t *pc) | |
464 | { | |
465 | memset(pc->c, 0, 12); | |
466 | pc->retries = 0; | |
467 | pc->flags = 0; | |
468 | pc->request_transfer = 0; | |
469 | pc->buffer = pc->pc_buffer; | |
470 | pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE; | |
471 | pc->callback = &idefloppy_pc_callback; | |
472 | } | |
473 | ||
474 | static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc) | |
475 | { | |
30d67099 BP |
476 | idefloppy_init_pc(pc); |
477 | pc->c[0] = GPCMD_REQUEST_SENSE; | |
1da177e4 LT |
478 | pc->c[4] = 255; |
479 | pc->request_transfer = 18; | |
480 | pc->callback = &idefloppy_request_sense_callback; | |
481 | } | |
482 | ||
483 | /* | |
484 | * idefloppy_retry_pc is called when an error was detected during the | |
485 | * last packet command. We queue a request sense packet command in | |
486 | * the head of the request list. | |
487 | */ | |
488 | static void idefloppy_retry_pc (ide_drive_t *drive) | |
489 | { | |
490 | idefloppy_pc_t *pc; | |
491 | struct request *rq; | |
1da177e4 | 492 | |
0e38a66a | 493 | (void)drive->hwif->INB(IDE_ERROR_REG); |
1da177e4 LT |
494 | pc = idefloppy_next_pc_storage(drive); |
495 | rq = idefloppy_next_rq_storage(drive); | |
496 | idefloppy_create_request_sense_cmd(pc); | |
497 | idefloppy_queue_pc_head(drive, pc, rq); | |
498 | } | |
499 | ||
0eea6458 | 500 | /* The usual interrupt handler called during a packet command. */ |
1da177e4 LT |
501 | static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive) |
502 | { | |
503 | idefloppy_floppy_t *floppy = drive->driver_data; | |
790d1239 | 504 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
505 | idefloppy_pc_t *pc = floppy->pc; |
506 | struct request *rq = pc->rq; | |
0eea6458 | 507 | xfer_func_t *xferfunc; |
1da177e4 | 508 | unsigned int temp; |
d30a7fba | 509 | int dma_error = 0; |
790d1239 | 510 | u16 bcount; |
8e7657ae | 511 | u8 stat, ireason; |
1da177e4 | 512 | |
bcc77d9c | 513 | debug_log("Reached %s interrupt handler\n", __func__); |
1da177e4 | 514 | |
6e5fa7b8 | 515 | if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { |
d30a7fba BP |
516 | dma_error = hwif->ide_dma_end(drive); |
517 | if (dma_error) { | |
518 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
519 | rq_data_dir(rq) ? "write" : "read"); | |
6e5fa7b8 | 520 | pc->flags |= PC_FLAG_DMA_ERROR; |
1da177e4 LT |
521 | } else { |
522 | pc->actually_transferred = pc->request_transfer; | |
523 | idefloppy_update_buffers(drive, pc); | |
524 | } | |
bcc77d9c | 525 | debug_log("DMA finished\n"); |
1da177e4 LT |
526 | } |
527 | ||
528 | /* Clear the interrupt */ | |
22c525b9 | 529 | stat = drive->hwif->INB(IDE_STATUS_REG); |
1da177e4 | 530 | |
22c525b9 | 531 | if ((stat & DRQ_STAT) == 0) { /* No more interrupts */ |
bcc77d9c BP |
532 | debug_log("Packet command completed, %d bytes transferred\n", |
533 | pc->actually_transferred); | |
6e5fa7b8 | 534 | pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; |
1da177e4 | 535 | |
366c7f55 | 536 | local_irq_enable_in_hardirq(); |
1da177e4 | 537 | |
6e5fa7b8 | 538 | if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) { |
1da177e4 | 539 | /* Error detected */ |
bcc77d9c | 540 | debug_log("%s: I/O error\n", drive->name); |
1da177e4 | 541 | rq->errors++; |
30d67099 | 542 | if (pc->c[0] == GPCMD_REQUEST_SENSE) { |
1da177e4 LT |
543 | printk(KERN_ERR "ide-floppy: I/O error in " |
544 | "request sense command\n"); | |
545 | return ide_do_reset(drive); | |
546 | } | |
547 | /* Retry operation */ | |
548 | idefloppy_retry_pc(drive); | |
549 | /* queued, but not started */ | |
550 | return ide_stopped; | |
551 | } | |
552 | pc->error = 0; | |
553 | if (floppy->failed_pc == pc) | |
554 | floppy->failed_pc = NULL; | |
555 | /* Command finished - Call the callback function */ | |
556 | pc->callback(drive); | |
557 | return ide_stopped; | |
558 | } | |
559 | ||
6e5fa7b8 BP |
560 | if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { |
561 | pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; | |
1da177e4 LT |
562 | printk(KERN_ERR "ide-floppy: The floppy wants to issue " |
563 | "more interrupts in DMA mode\n"); | |
7469aaf6 | 564 | ide_dma_off(drive); |
1da177e4 LT |
565 | return ide_do_reset(drive); |
566 | } | |
567 | ||
568 | /* Get the number of bytes to transfer */ | |
790d1239 BZ |
569 | bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) | |
570 | hwif->INB(IDE_BCOUNTL_REG); | |
1da177e4 | 571 | /* on this interrupt */ |
8e7657ae | 572 | ireason = hwif->INB(IDE_IREASON_REG); |
1da177e4 | 573 | |
8e7657ae | 574 | if (ireason & CD) { |
0eea6458 | 575 | printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__); |
1da177e4 LT |
576 | return ide_do_reset(drive); |
577 | } | |
6e5fa7b8 | 578 | if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) { |
1da177e4 LT |
579 | /* Hopefully, we will never get here */ |
580 | printk(KERN_ERR "ide-floppy: We wanted to %s, ", | |
8e7657ae | 581 | (ireason & IO) ? "Write" : "Read"); |
1da177e4 | 582 | printk(KERN_ERR "but the floppy wants us to %s !\n", |
8e7657ae | 583 | (ireason & IO) ? "Read" : "Write"); |
1da177e4 LT |
584 | return ide_do_reset(drive); |
585 | } | |
6e5fa7b8 | 586 | if (!(pc->flags & PC_FLAG_WRITING)) { |
1da177e4 | 587 | /* Reading - Check that we have enough space */ |
790d1239 | 588 | temp = pc->actually_transferred + bcount; |
1da177e4 LT |
589 | if (temp > pc->request_transfer) { |
590 | if (temp > pc->buffer_size) { | |
591 | printk(KERN_ERR "ide-floppy: The floppy wants " | |
592 | "to send us more data than expected " | |
593 | "- discarding data\n"); | |
790d1239 | 594 | idefloppy_discard_data(drive, bcount); |
0078df2e | 595 | |
1da177e4 LT |
596 | ide_set_handler(drive, |
597 | &idefloppy_pc_intr, | |
598 | IDEFLOPPY_WAIT_CMD, | |
599 | NULL); | |
600 | return ide_started; | |
601 | } | |
bcc77d9c BP |
602 | debug_log("The floppy wants to send us more data than" |
603 | " expected - allowing transfer\n"); | |
1da177e4 LT |
604 | } |
605 | } | |
6e5fa7b8 | 606 | if (pc->flags & PC_FLAG_WRITING) |
0eea6458 | 607 | xferfunc = hwif->atapi_output_bytes; |
32925e1a | 608 | else |
0eea6458 | 609 | xferfunc = hwif->atapi_input_bytes; |
0eea6458 BP |
610 | |
611 | if (pc->buffer) | |
612 | xferfunc(drive, pc->current_position, bcount); | |
613 | else | |
32925e1a | 614 | ide_floppy_io_buffers(drive, pc, bcount, |
6e5fa7b8 | 615 | !!(pc->flags & PC_FLAG_WRITING)); |
0eea6458 | 616 | |
1da177e4 | 617 | /* Update the current position */ |
790d1239 BZ |
618 | pc->actually_transferred += bcount; |
619 | pc->current_position += bcount; | |
1da177e4 | 620 | |
32925e1a BP |
621 | /* And set the interrupt handler again */ |
622 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
1da177e4 LT |
623 | return ide_started; |
624 | } | |
625 | ||
626 | /* | |
627 | * This is the original routine that did the packet transfer. | |
628 | * It fails at high speeds on the Iomega ZIP drive, so there's a slower version | |
629 | * for that drive below. The algorithm is chosen based on drive type | |
630 | */ | |
631 | static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive) | |
632 | { | |
633 | ide_startstop_t startstop; | |
634 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e7657ae | 635 | u8 ireason; |
1da177e4 LT |
636 | |
637 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
638 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
639 | "initiated yet DRQ isn't asserted\n"); | |
640 | return startstop; | |
641 | } | |
8e7657ae BZ |
642 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
643 | if ((ireason & CD) == 0 || (ireason & IO)) { | |
1da177e4 LT |
644 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while " |
645 | "issuing a packet command\n"); | |
646 | return ide_do_reset(drive); | |
647 | } | |
0078df2e | 648 | |
1da177e4 LT |
649 | /* Set the interrupt routine */ |
650 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
651 | /* Send the actual packet */ | |
652 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
653 | return ide_started; | |
654 | } | |
655 | ||
656 | ||
657 | /* | |
658 | * What we have here is a classic case of a top half / bottom half | |
659 | * interrupt service routine. In interrupt mode, the device sends | |
660 | * an interrupt to signal it's ready to receive a packet. However, | |
661 | * we need to delay about 2-3 ticks before issuing the packet or we | |
662 | * gets in trouble. | |
663 | * | |
664 | * So, follow carefully. transfer_pc1 is called as an interrupt (or | |
665 | * directly). In either case, when the device says it's ready for a | |
666 | * packet, we schedule the packet transfer to occur about 2-3 ticks | |
667 | * later in transfer_pc2. | |
668 | */ | |
669 | static int idefloppy_transfer_pc2 (ide_drive_t *drive) | |
670 | { | |
671 | idefloppy_floppy_t *floppy = drive->driver_data; | |
672 | ||
673 | /* Send the actual packet */ | |
674 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
675 | /* Timeout for the packet command */ | |
676 | return IDEFLOPPY_WAIT_CMD; | |
677 | } | |
678 | ||
679 | static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive) | |
680 | { | |
681 | idefloppy_floppy_t *floppy = drive->driver_data; | |
682 | ide_startstop_t startstop; | |
8e7657ae | 683 | u8 ireason; |
1da177e4 LT |
684 | |
685 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
686 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
687 | "initiated yet DRQ isn't asserted\n"); | |
688 | return startstop; | |
689 | } | |
8e7657ae BZ |
690 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
691 | if ((ireason & CD) == 0 || (ireason & IO)) { | |
1da177e4 LT |
692 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) " |
693 | "while issuing a packet command\n"); | |
694 | return ide_do_reset(drive); | |
695 | } | |
696 | /* | |
697 | * The following delay solves a problem with ATAPI Zip 100 drives | |
698 | * where the Busy flag was apparently being deasserted before the | |
699 | * unit was ready to receive data. This was happening on a | |
700 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
701 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
702 | * used until after the packet is moved in about 50 msec. | |
703 | */ | |
0078df2e | 704 | |
1da177e4 LT |
705 | ide_set_handler(drive, |
706 | &idefloppy_pc_intr, /* service routine for packet command */ | |
707 | floppy->ticks, /* wait this long before "failing" */ | |
708 | &idefloppy_transfer_pc2); /* fail == transfer_pc2 */ | |
709 | return ide_started; | |
710 | } | |
711 | ||
d652c138 BP |
712 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
713 | idefloppy_pc_t *pc) | |
1da177e4 | 714 | { |
d652c138 | 715 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
716 | if (floppy->sense_key == 0x02 && |
717 | floppy->asc == 0x3a && | |
718 | floppy->ascq == 0x00) | |
d652c138 BP |
719 | return; |
720 | ||
721 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
722 | "asc = %2x, ascq = %2x\n", | |
723 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
724 | floppy->asc, floppy->ascq); | |
725 | ||
1da177e4 LT |
726 | } |
727 | ||
728 | /* | |
729 | * Issue a packet command | |
730 | */ | |
731 | static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc) | |
732 | { | |
733 | idefloppy_floppy_t *floppy = drive->driver_data; | |
734 | ide_hwif_t *hwif = drive->hwif; | |
1da177e4 | 735 | ide_handler_t *pkt_xfer_routine; |
790d1239 | 736 | u16 bcount; |
e5f9f5a8 | 737 | u8 dma; |
1da177e4 | 738 | |
1da177e4 | 739 | if (floppy->failed_pc == NULL && |
30d67099 | 740 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 LT |
741 | floppy->failed_pc = pc; |
742 | /* Set the current packet command */ | |
743 | floppy->pc = pc; | |
744 | ||
757ced89 | 745 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 746 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
747 | ide_floppy_report_error(floppy, pc); |
748 | /* Giving up */ | |
749 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
750 | ||
1da177e4 LT |
751 | floppy->failed_pc = NULL; |
752 | pc->callback(drive); | |
753 | return ide_stopped; | |
754 | } | |
755 | ||
bcc77d9c | 756 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
757 | |
758 | pc->retries++; | |
759 | /* We haven't transferred any data yet */ | |
760 | pc->actually_transferred = 0; | |
761 | pc->current_position = pc->buffer; | |
790d1239 | 762 | bcount = min(pc->request_transfer, 63 * 1024); |
1da177e4 | 763 | |
6e5fa7b8 BP |
764 | if (pc->flags & PC_FLAG_DMA_ERROR) { |
765 | pc->flags &= ~PC_FLAG_DMA_ERROR; | |
7469aaf6 | 766 | ide_dma_off(drive); |
6e5fa7b8 | 767 | } |
e5f9f5a8 | 768 | dma = 0; |
1da177e4 | 769 | |
6e5fa7b8 | 770 | if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma) |
e5f9f5a8 | 771 | dma = !hwif->dma_setup(drive); |
1da177e4 | 772 | |
2fc57388 BZ |
773 | ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK | |
774 | IDE_TFLAG_OUT_DEVICE, bcount, dma); | |
1da177e4 | 775 | |
e5f9f5a8 | 776 | if (dma) { /* Begin DMA, if necessary */ |
6e5fa7b8 | 777 | pc->flags |= PC_FLAG_DMA_IN_PROGRESS; |
1da177e4 LT |
778 | hwif->dma_start(drive); |
779 | } | |
780 | ||
781 | /* Can we transfer the packet when we get the interrupt or wait? */ | |
6e5fa7b8 | 782 | if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) { |
1da177e4 LT |
783 | /* wait */ |
784 | pkt_xfer_routine = &idefloppy_transfer_pc1; | |
785 | } else { | |
786 | /* immediate */ | |
787 | pkt_xfer_routine = &idefloppy_transfer_pc; | |
788 | } | |
789 | ||
6e5fa7b8 | 790 | if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) { |
1da177e4 LT |
791 | /* Issue the packet command */ |
792 | ide_execute_command(drive, WIN_PACKETCMD, | |
793 | pkt_xfer_routine, | |
794 | IDEFLOPPY_WAIT_CMD, | |
795 | NULL); | |
796 | return ide_started; | |
797 | } else { | |
798 | /* Issue the packet command */ | |
799 | HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG); | |
800 | return (*pkt_xfer_routine) (drive); | |
801 | } | |
802 | } | |
803 | ||
804 | static void idefloppy_rw_callback (ide_drive_t *drive) | |
805 | { | |
bcc77d9c | 806 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
807 | |
808 | idefloppy_do_end_request(drive, 1, 0); | |
809 | return; | |
810 | } | |
811 | ||
812 | static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent) | |
813 | { | |
bcc77d9c | 814 | debug_log("creating prevent removal command, prevent = %d\n", prevent); |
1da177e4 LT |
815 | |
816 | idefloppy_init_pc(pc); | |
30d67099 | 817 | pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
1da177e4 LT |
818 | pc->c[4] = prevent; |
819 | } | |
820 | ||
821 | static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc) | |
822 | { | |
823 | idefloppy_init_pc(pc); | |
30d67099 | 824 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
825 | pc->c[7] = 255; |
826 | pc->c[8] = 255; | |
827 | pc->request_transfer = 255; | |
828 | } | |
829 | ||
830 | static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l, | |
831 | int flags) | |
832 | { | |
833 | idefloppy_init_pc(pc); | |
30d67099 | 834 | pc->c[0] = GPCMD_FORMAT_UNIT; |
1da177e4 LT |
835 | pc->c[1] = 0x17; |
836 | ||
837 | memset(pc->buffer, 0, 12); | |
838 | pc->buffer[1] = 0xA2; | |
839 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ | |
840 | ||
841 | if (flags & 1) /* Verify bit on... */ | |
842 | pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */ | |
843 | pc->buffer[3] = 8; | |
844 | ||
8f622430 BP |
845 | put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buffer[4])); |
846 | put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buffer[8])); | |
1da177e4 | 847 | pc->buffer_size=12; |
6e5fa7b8 | 848 | pc->flags |= PC_FLAG_WRITING; |
1da177e4 LT |
849 | } |
850 | ||
851 | /* | |
852 | * A mode sense command is used to "sense" floppy parameters. | |
853 | */ | |
854 | static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type) | |
855 | { | |
24a5d703 | 856 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
1da177e4 LT |
857 | |
858 | idefloppy_init_pc(pc); | |
30d67099 | 859 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 LT |
860 | pc->c[1] = 0; |
861 | pc->c[2] = page_code + (type << 6); | |
862 | ||
863 | switch (page_code) { | |
864 | case IDEFLOPPY_CAPABILITIES_PAGE: | |
865 | length += 12; | |
866 | break; | |
867 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
868 | length += 32; | |
869 | break; | |
870 | default: | |
871 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
872 | "in create_mode_sense_cmd\n"); | |
873 | } | |
8f622430 | 874 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
1da177e4 LT |
875 | pc->request_transfer = length; |
876 | } | |
877 | ||
878 | static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start) | |
879 | { | |
880 | idefloppy_init_pc(pc); | |
30d67099 | 881 | pc->c[0] = GPCMD_START_STOP_UNIT; |
1da177e4 LT |
882 | pc->c[4] = start; |
883 | } | |
884 | ||
885 | static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc) | |
886 | { | |
887 | idefloppy_init_pc(pc); | |
30d67099 | 888 | pc->c[0] = GPCMD_TEST_UNIT_READY; |
1da177e4 LT |
889 | } |
890 | ||
ae7e8ddc BP |
891 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
892 | idefloppy_pc_t *pc, struct request *rq, | |
893 | unsigned long sector) | |
1da177e4 LT |
894 | { |
895 | int block = sector / floppy->bs_factor; | |
896 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
897 | int cmd = rq_data_dir(rq); | |
898 | ||
ae7e8ddc | 899 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
900 | block, blocks); |
901 | ||
902 | idefloppy_init_pc(pc); | |
ae7e8ddc BP |
903 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
904 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 905 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 906 | |
1da177e4 LT |
907 | pc->callback = &idefloppy_rw_callback; |
908 | pc->rq = rq; | |
909 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; | |
4aff5e23 | 910 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 911 | pc->flags |= PC_FLAG_WRITING; |
1da177e4 LT |
912 | pc->buffer = NULL; |
913 | pc->request_transfer = pc->buffer_size = blocks * floppy->block_size; | |
6e5fa7b8 | 914 | pc->flags |= PC_FLAG_DMA_RECOMMENDED; |
1da177e4 LT |
915 | } |
916 | ||
3d6392cf | 917 | static void |
1da177e4 LT |
918 | idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq) |
919 | { | |
1da177e4 | 920 | idefloppy_init_pc(pc); |
3d6392cf | 921 | pc->callback = &idefloppy_rw_callback; |
1da177e4 | 922 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf JA |
923 | pc->rq = rq; |
924 | pc->b_count = rq->data_len; | |
925 | if (rq->data_len && rq_data_dir(rq) == WRITE) | |
6e5fa7b8 | 926 | pc->flags |= PC_FLAG_WRITING; |
3d6392cf JA |
927 | pc->buffer = rq->data; |
928 | if (rq->bio) | |
6e5fa7b8 | 929 | pc->flags |= PC_FLAG_DMA_RECOMMENDED; |
3d6392cf JA |
930 | /* |
931 | * possibly problematic, doesn't look like ide-floppy correctly | |
932 | * handled scattered requests if dma fails... | |
933 | */ | |
934 | pc->request_transfer = pc->buffer_size = rq->data_len; | |
1da177e4 LT |
935 | } |
936 | ||
937 | /* | |
938 | * idefloppy_do_request is our request handling function. | |
939 | */ | |
940 | static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, sector_t block_s) | |
941 | { | |
942 | idefloppy_floppy_t *floppy = drive->driver_data; | |
943 | idefloppy_pc_t *pc; | |
944 | unsigned long block = (unsigned long)block_s; | |
945 | ||
bcc77d9c | 946 | debug_log("dev: %s, cmd_type: %x, errors: %d\n", |
18cddac3 | 947 | rq->rq_disk ? rq->rq_disk->disk_name : "?", |
bcc77d9c BP |
948 | rq->cmd_type, rq->errors); |
949 | debug_log("sector: %ld, nr_sectors: %ld, " | |
1da177e4 LT |
950 | "current_nr_sectors: %d\n", (long)rq->sector, |
951 | rq->nr_sectors, rq->current_nr_sectors); | |
952 | ||
953 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
954 | if (floppy->failed_pc) |
955 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
956 | else |
957 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
958 | drive->name); | |
959 | idefloppy_do_end_request(drive, 0, 0); | |
960 | return ide_stopped; | |
961 | } | |
4aff5e23 | 962 | if (blk_fs_request(rq)) { |
1da177e4 LT |
963 | if (((long)rq->sector % floppy->bs_factor) || |
964 | (rq->nr_sectors % floppy->bs_factor)) { | |
965 | printk("%s: unsupported r/w request size\n", | |
966 | drive->name); | |
967 | idefloppy_do_end_request(drive, 0, 0); | |
968 | return ide_stopped; | |
969 | } | |
970 | pc = idefloppy_next_pc_storage(drive); | |
971 | idefloppy_create_rw_cmd(floppy, pc, rq, block); | |
4aff5e23 | 972 | } else if (blk_special_request(rq)) { |
1da177e4 | 973 | pc = (idefloppy_pc_t *) rq->buffer; |
4aff5e23 | 974 | } else if (blk_pc_request(rq)) { |
1da177e4 | 975 | pc = idefloppy_next_pc_storage(drive); |
3d6392cf | 976 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
977 | } else { |
978 | blk_dump_rq_flags(rq, | |
979 | "ide-floppy: unsupported command in queue"); | |
980 | idefloppy_do_end_request(drive, 0, 0); | |
981 | return ide_stopped; | |
982 | } | |
983 | ||
984 | pc->rq = rq; | |
985 | return idefloppy_issue_pc(drive, pc); | |
986 | } | |
987 | ||
988 | /* | |
989 | * idefloppy_queue_pc_tail adds a special packet command request to the | |
990 | * tail of the request queue, and waits for it to be serviced. | |
991 | */ | |
992 | static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc) | |
993 | { | |
994 | struct ide_floppy_obj *floppy = drive->driver_data; | |
995 | struct request rq; | |
996 | ||
997 | ide_init_drive_cmd (&rq); | |
998 | rq.buffer = (char *) pc; | |
4aff5e23 | 999 | rq.cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
1000 | rq.rq_disk = floppy->disk; |
1001 | ||
1002 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
1003 | } | |
1004 | ||
1005 | /* | |
8e81bbba BP |
1006 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
1007 | * parameters and use the LBA parameters instead. | |
1da177e4 | 1008 | */ |
8e81bbba | 1009 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
1010 | { |
1011 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1012 | idefloppy_pc_t pc; | |
8e81bbba | 1013 | u8 *page; |
1da177e4 | 1014 | int capacity, lba_capacity; |
8e81bbba BP |
1015 | u16 transfer_rate, sector_size, cyls, rpm; |
1016 | u8 heads, sectors; | |
1da177e4 | 1017 | |
8e81bbba BP |
1018 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, |
1019 | MODE_SENSE_CURRENT); | |
1020 | ||
1021 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1022 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" | |
1023 | " parameters\n"); | |
1da177e4 LT |
1024 | return 1; |
1025 | } | |
24a5d703 | 1026 | floppy->wp = !!(pc.buffer[3] & 0x80); |
1da177e4 | 1027 | set_disk_ro(floppy->disk, floppy->wp); |
8e81bbba BP |
1028 | page = &pc.buffer[8]; |
1029 | ||
1030 | transfer_rate = be16_to_cpu(*(u16 *)&pc.buffer[8 + 2]); | |
1031 | sector_size = be16_to_cpu(*(u16 *)&pc.buffer[8 + 6]); | |
1032 | cyls = be16_to_cpu(*(u16 *)&pc.buffer[8 + 8]); | |
1033 | rpm = be16_to_cpu(*(u16 *)&pc.buffer[8 + 28]); | |
1034 | heads = pc.buffer[8 + 4]; | |
1035 | sectors = pc.buffer[8 + 5]; | |
1036 | ||
1037 | capacity = cyls * heads * sectors * sector_size; | |
1038 | ||
1039 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
1040 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
1041 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
1042 | drive->name, capacity / 1024, cyls, heads, |
1043 | sectors, transfer_rate / 8, sector_size, rpm); | |
1044 | ||
1045 | memcpy(&floppy->flexible_disk_page, page, 32); | |
1046 | drive->bios_cyl = cyls; | |
1047 | drive->bios_head = heads; | |
1048 | drive->bios_sect = sectors; | |
1da177e4 | 1049 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 1050 | |
1da177e4 LT |
1051 | if (capacity < lba_capacity) { |
1052 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
1053 | "bytes, but the drive only handles %d\n", | |
1054 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
1055 | floppy->blocks = floppy->block_size ? |
1056 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
1057 | } |
1058 | return 0; | |
1059 | } | |
1060 | ||
948391d1 | 1061 | static int idefloppy_get_sfrp_bit(ide_drive_t *drive) |
1da177e4 LT |
1062 | { |
1063 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1064 | idefloppy_pc_t pc; | |
1da177e4 LT |
1065 | |
1066 | floppy->srfp = 0; | |
1067 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, | |
1068 | MODE_SENSE_CURRENT); | |
1069 | ||
6e5fa7b8 | 1070 | pc.flags |= PC_FLAG_SUPPRESS_ERROR; |
948391d1 | 1071 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 1072 | return 1; |
1da177e4 | 1073 | |
948391d1 | 1074 | floppy->srfp = pc.buffer[8 + 2] & 0x40; |
1da177e4 LT |
1075 | return (0); |
1076 | } | |
1077 | ||
1078 | /* | |
194ec0c0 BP |
1079 | * Determine if a media is present in the floppy drive, and if so, its LBA |
1080 | * capacity. | |
1da177e4 | 1081 | */ |
194ec0c0 | 1082 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
1083 | { |
1084 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1085 | idefloppy_pc_t pc; | |
194ec0c0 BP |
1086 | u8 *cap_desc; |
1087 | u8 header_len, desc_cnt; | |
1088 | int i, rc = 1, blocks, length; | |
1089 | ||
1da177e4 LT |
1090 | drive->bios_cyl = 0; |
1091 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
1092 | floppy->blocks = 0; |
1093 | floppy->bs_factor = 1; | |
1da177e4 LT |
1094 | set_capacity(floppy->disk, 0); |
1095 | ||
1096 | idefloppy_create_read_capacity_cmd(&pc); | |
1097 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1098 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
1099 | return 1; | |
1100 | } | |
194ec0c0 BP |
1101 | header_len = pc.buffer[3]; |
1102 | cap_desc = &pc.buffer[4]; | |
1103 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ | |
1104 | ||
1105 | for (i = 0; i < desc_cnt; i++) { | |
1106 | unsigned int desc_start = 4 + i*8; | |
1107 | ||
1108 | blocks = be32_to_cpu(*(u32 *)&pc.buffer[desc_start]); | |
1109 | length = be16_to_cpu(*(u16 *)&pc.buffer[desc_start + 6]); | |
1110 | ||
1111 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
1112 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 1113 | |
194ec0c0 BP |
1114 | if (i) |
1115 | continue; | |
1116 | /* | |
1117 | * the code below is valid only for the 1st descriptor, ie i=0 | |
1118 | */ | |
1da177e4 | 1119 | |
194ec0c0 | 1120 | switch (pc.buffer[desc_start + 4] & 0x03) { |
1da177e4 LT |
1121 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
1122 | case CAPACITY_UNFORMATTED: | |
6e5fa7b8 | 1123 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) |
1da177e4 LT |
1124 | /* |
1125 | * If it is not a clik drive, break out | |
1126 | * (maintains previous driver behaviour) | |
1127 | */ | |
1128 | break; | |
1129 | case CAPACITY_CURRENT: | |
1130 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 1131 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
1132 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
1133 | "sector size\n", drive->name, | |
1134 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
1135 | memcpy(&floppy->cap_desc, cap_desc, 8); |
1136 | ||
1da177e4 LT |
1137 | if (!length || length % 512) { |
1138 | printk(KERN_NOTICE "%s: %d bytes block size " | |
1139 | "not supported\n", drive->name, length); | |
1140 | } else { | |
194ec0c0 BP |
1141 | floppy->blocks = blocks; |
1142 | floppy->block_size = length; | |
1143 | floppy->bs_factor = length / 512; | |
1144 | if (floppy->bs_factor != 1) | |
1145 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
1146 | "512 bytes block size not " |
1147 | "fully supported\n", | |
1148 | drive->name); | |
194ec0c0 | 1149 | rc = 0; |
1da177e4 LT |
1150 | } |
1151 | break; | |
1152 | case CAPACITY_NO_CARTRIDGE: | |
1153 | /* | |
1154 | * This is a KERN_ERR so it appears on screen | |
1155 | * for the user to see | |
1156 | */ | |
1157 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
1158 | break; | |
1159 | case CAPACITY_INVALID: | |
1160 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
1161 | "in drive\n", drive->name); | |
1162 | break; | |
1163 | } | |
194ec0c0 BP |
1164 | debug_log("Descriptor 0 Code: %d\n", |
1165 | pc.buffer[desc_start + 4] & 0x03); | |
1da177e4 LT |
1166 | } |
1167 | ||
1168 | /* Clik! disk does not support get_flexible_disk_page */ | |
6e5fa7b8 | 1169 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) |
8e81bbba | 1170 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 LT |
1171 | |
1172 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); | |
1173 | return rc; | |
1174 | } | |
1175 | ||
1176 | /* | |
194ec0c0 BP |
1177 | * Obtain the list of formattable capacities. |
1178 | * Very similar to ide_floppy_get_capacity, except that we push the capacity | |
1179 | * descriptors to userland, instead of our own structures. | |
1180 | * | |
1181 | * Userland gives us the following structure: | |
1182 | * | |
1183 | * struct idefloppy_format_capacities { | |
1184 | * int nformats; | |
1185 | * struct { | |
1186 | * int nblocks; | |
1187 | * int blocksize; | |
1188 | * } formats[]; | |
1189 | * }; | |
1190 | * | |
1191 | * userland initializes nformats to the number of allocated formats[] records. | |
1192 | * On exit we set nformats to the number of records we've actually initialized. | |
1193 | */ | |
1da177e4 | 1194 | |
194ec0c0 | 1195 | static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
1da177e4 | 1196 | { |
194ec0c0 BP |
1197 | idefloppy_pc_t pc; |
1198 | u8 header_len, desc_cnt; | |
1199 | int i, blocks, length, u_array_size, u_index; | |
1da177e4 LT |
1200 | int __user *argp; |
1201 | ||
1202 | if (get_user(u_array_size, arg)) | |
1203 | return (-EFAULT); | |
1204 | ||
1205 | if (u_array_size <= 0) | |
1206 | return (-EINVAL); | |
1207 | ||
1208 | idefloppy_create_read_capacity_cmd(&pc); | |
1209 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1210 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
194ec0c0 BP |
1211 | return (-EIO); |
1212 | } | |
1213 | header_len = pc.buffer[3]; | |
1214 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ | |
1da177e4 LT |
1215 | |
1216 | u_index = 0; | |
1217 | argp = arg + 1; | |
1218 | ||
1219 | /* | |
194ec0c0 BP |
1220 | * We always skip the first capacity descriptor. That's the current |
1221 | * capacity. We are interested in the remaining descriptors, the | |
1222 | * formattable capacities. | |
1223 | */ | |
1224 | for (i = 1; i < desc_cnt; i++) { | |
1225 | unsigned int desc_start = 4 + i*8; | |
1da177e4 | 1226 | |
1da177e4 LT |
1227 | if (u_index >= u_array_size) |
1228 | break; /* User-supplied buffer too small */ | |
1da177e4 | 1229 | |
194ec0c0 BP |
1230 | blocks = be32_to_cpu(*(u32 *)&pc.buffer[desc_start]); |
1231 | length = be16_to_cpu(*(u16 *)&pc.buffer[desc_start + 6]); | |
1da177e4 LT |
1232 | |
1233 | if (put_user(blocks, argp)) | |
1234 | return(-EFAULT); | |
1235 | ++argp; | |
1236 | ||
1237 | if (put_user(length, argp)) | |
1238 | return (-EFAULT); | |
1239 | ++argp; | |
1240 | ||
1241 | ++u_index; | |
1242 | } | |
1243 | ||
1244 | if (put_user(u_index, arg)) | |
1245 | return (-EFAULT); | |
1246 | return (0); | |
1247 | } | |
1248 | ||
1da177e4 LT |
1249 | /* |
1250 | ** Get ATAPI_FORMAT_UNIT progress indication. | |
1251 | ** | |
0779bf2d | 1252 | ** Userland gives a pointer to an int. The int is set to a progress |
1da177e4 LT |
1253 | ** indicator 0-65536, with 65536=100%. |
1254 | ** | |
1255 | ** If the drive does not support format progress indication, we just check | |
1256 | ** the dsc bit, and return either 0 or 65536. | |
1257 | */ | |
1258 | ||
1259 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) | |
1260 | { | |
1261 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1262 | idefloppy_pc_t pc; | |
1263 | int progress_indication = 0x10000; | |
1264 | ||
1265 | if (floppy->srfp) { | |
1266 | idefloppy_create_request_sense_cmd(&pc); | |
1267 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1268 | return (-EIO); | |
1269 | } | |
1270 | ||
1271 | if (floppy->sense_key == 2 && | |
1272 | floppy->asc == 4 && | |
1273 | floppy->ascq == 4) { | |
1274 | progress_indication = floppy->progress_indication; | |
1275 | } | |
1276 | /* Else assume format_unit has finished, and we're | |
1277 | ** at 0x10000 */ | |
1278 | } else { | |
1da177e4 | 1279 | unsigned long flags; |
22c525b9 | 1280 | u8 stat; |
1da177e4 LT |
1281 | |
1282 | local_irq_save(flags); | |
22c525b9 | 1283 | stat = drive->hwif->INB(IDE_STATUS_REG); |
1da177e4 LT |
1284 | local_irq_restore(flags); |
1285 | ||
22c525b9 | 1286 | progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000; |
1da177e4 LT |
1287 | } |
1288 | if (put_user(progress_indication, arg)) | |
1289 | return (-EFAULT); | |
1290 | ||
1291 | return (0); | |
1292 | } | |
1293 | ||
1294 | /* | |
1295 | * Return the current floppy capacity. | |
1296 | */ | |
1297 | static sector_t idefloppy_capacity (ide_drive_t *drive) | |
1298 | { | |
1299 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1300 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
1301 | ||
1302 | return capacity; | |
1303 | } | |
1304 | ||
1305 | /* | |
f373bd82 BP |
1306 | * Check whether we can support a drive, based on the ATAPI IDENTIFY command |
1307 | * results. | |
1da177e4 | 1308 | */ |
f373bd82 | 1309 | static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id) |
1da177e4 LT |
1310 | { |
1311 | struct idefloppy_id_gcw gcw; | |
1da177e4 LT |
1312 | |
1313 | *((u16 *) &gcw) = id->config; | |
1314 | ||
1315 | #ifdef CONFIG_PPC | |
1316 | /* kludge for Apple PowerBook internal zip */ | |
1317 | if ((gcw.device_type == 5) && | |
1318 | !strstr(id->model, "CD-ROM") && | |
1319 | strstr(id->model, "ZIP")) | |
f373bd82 | 1320 | gcw.device_type = 0; |
1da177e4 LT |
1321 | #endif |
1322 | ||
1da177e4 | 1323 | if (gcw.protocol != 2) |
f373bd82 BP |
1324 | printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n", |
1325 | gcw.protocol); | |
1da177e4 | 1326 | else if (gcw.device_type != 0) |
f373bd82 BP |
1327 | printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set " |
1328 | "to floppy\n", gcw.device_type); | |
1da177e4 LT |
1329 | else if (!gcw.removable) |
1330 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); | |
1331 | else if (gcw.drq_type == 3) { | |
f373bd82 BP |
1332 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not " |
1333 | "supported\n", gcw.drq_type); | |
1da177e4 | 1334 | } else if (gcw.packet_size != 0) { |
f373bd82 BP |
1335 | printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 " |
1336 | "bytes long\n", gcw.packet_size); | |
1da177e4 LT |
1337 | } else |
1338 | return 1; | |
1339 | return 0; | |
1340 | } | |
1341 | ||
7662d046 | 1342 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1343 | static void idefloppy_add_settings(ide_drive_t *drive) |
1344 | { | |
1345 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1346 | ||
1347 | /* | |
1497943e | 1348 | * drive setting name read/write data type min max mul_factor div_factor data pointer set function |
1da177e4 | 1349 | */ |
1497943e BZ |
1350 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL); |
1351 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); | |
1352 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); | |
1353 | ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL); | |
1da177e4 | 1354 | } |
7662d046 BZ |
1355 | #else |
1356 | static inline void idefloppy_add_settings(ide_drive_t *drive) { ; } | |
1357 | #endif | |
1da177e4 LT |
1358 | |
1359 | /* | |
1360 | * Driver initialization. | |
1361 | */ | |
1362 | static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy) | |
1363 | { | |
1364 | struct idefloppy_id_gcw gcw; | |
1365 | ||
1366 | *((u16 *) &gcw) = drive->id->config; | |
1367 | floppy->pc = floppy->pc_stack; | |
1368 | if (gcw.drq_type == 1) | |
6e5fa7b8 | 1369 | floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT; |
1da177e4 LT |
1370 | /* |
1371 | * We used to check revisions here. At this point however | |
1372 | * I'm giving up. Just assume they are all broken, its easier. | |
1373 | * | |
1374 | * The actual reason for the workarounds was likely | |
1375 | * a driver bug after all rather than a firmware bug, | |
1376 | * and the workaround below used to hide it. It should | |
1377 | * be fixed as of version 1.9, but to be on the safe side | |
1378 | * we'll leave the limitation below for the 2.2.x tree. | |
1379 | */ | |
1380 | ||
1381 | if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { | |
6e5fa7b8 | 1382 | floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE; |
1da177e4 LT |
1383 | /* This value will be visible in the /proc/ide/hdx/settings */ |
1384 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
1385 | blk_queue_max_sectors(drive->queue, 64); | |
1386 | } | |
1387 | ||
1388 | /* | |
1389 | * Guess what? The IOMEGA Clik! drive also needs the | |
1390 | * above fix. It makes nasty clicking noises without | |
1391 | * it, so please don't remove this. | |
1392 | */ | |
1393 | if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { | |
1394 | blk_queue_max_sectors(drive->queue, 64); | |
6e5fa7b8 | 1395 | floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE; |
1da177e4 LT |
1396 | } |
1397 | ||
1398 | ||
194ec0c0 | 1399 | (void) ide_floppy_get_capacity(drive); |
1da177e4 LT |
1400 | idefloppy_add_settings(drive); |
1401 | } | |
1402 | ||
4031bbe4 | 1403 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
1404 | { |
1405 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1406 | struct gendisk *g = floppy->disk; | |
1407 | ||
7662d046 | 1408 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
1409 | |
1410 | del_gendisk(g); | |
1411 | ||
1412 | ide_floppy_put(floppy); | |
1da177e4 LT |
1413 | } |
1414 | ||
9a24b63d | 1415 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 LT |
1416 | { |
1417 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
1418 | ide_drive_t *drive = floppy->drive; | |
1419 | struct gendisk *g = floppy->disk; | |
1420 | ||
1421 | drive->driver_data = NULL; | |
1422 | g->private_data = NULL; | |
1423 | put_disk(g); | |
1424 | kfree(floppy); | |
1425 | } | |
1426 | ||
ecfd80e4 | 1427 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1428 | static int proc_idefloppy_read_capacity |
1429 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
1430 | { | |
1431 | ide_drive_t*drive = (ide_drive_t *)data; | |
1432 | int len; | |
1433 | ||
1434 | len = sprintf(page,"%llu\n", (long long)idefloppy_capacity(drive)); | |
1435 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
1436 | } | |
1437 | ||
1438 | static ide_proc_entry_t idefloppy_proc[] = { | |
1439 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, | |
1440 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1441 | { NULL, 0, NULL, NULL } | |
1442 | }; | |
ecfd80e4 | 1443 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 1444 | |
4031bbe4 | 1445 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 1446 | |
1da177e4 | 1447 | static ide_driver_t idefloppy_driver = { |
8604affd | 1448 | .gen_driver = { |
4ef3b8f4 | 1449 | .owner = THIS_MODULE, |
8604affd BZ |
1450 | .name = "ide-floppy", |
1451 | .bus = &ide_bus_type, | |
8604affd | 1452 | }, |
4031bbe4 RK |
1453 | .probe = ide_floppy_probe, |
1454 | .remove = ide_floppy_remove, | |
1da177e4 LT |
1455 | .version = IDEFLOPPY_VERSION, |
1456 | .media = ide_floppy, | |
1da177e4 | 1457 | .supports_dsc_overlap = 0, |
1da177e4 LT |
1458 | .do_request = idefloppy_do_request, |
1459 | .end_request = idefloppy_do_end_request, | |
1460 | .error = __ide_error, | |
1461 | .abort = __ide_abort, | |
7662d046 | 1462 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1463 | .proc = idefloppy_proc, |
7662d046 | 1464 | #endif |
1da177e4 LT |
1465 | }; |
1466 | ||
1467 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
1468 | { | |
1469 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1470 | struct ide_floppy_obj *floppy; | |
1471 | ide_drive_t *drive; | |
1472 | idefloppy_pc_t pc; | |
1473 | int ret = 0; | |
1474 | ||
bcc77d9c | 1475 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
1476 | |
1477 | if (!(floppy = ide_floppy_get(disk))) | |
1478 | return -ENXIO; | |
1479 | ||
1480 | drive = floppy->drive; | |
1481 | ||
c94964a4 | 1482 | floppy->openers++; |
1da177e4 | 1483 | |
c94964a4 | 1484 | if (floppy->openers == 1) { |
6e5fa7b8 | 1485 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
1486 | /* Just in case */ |
1487 | ||
1488 | idefloppy_create_test_unit_ready_cmd(&pc); | |
1489 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1490 | idefloppy_create_start_stop_cmd(&pc, 1); | |
1491 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1492 | } | |
1493 | ||
194ec0c0 | 1494 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
1495 | && (filp->f_flags & O_NDELAY) == 0 |
1496 | /* | |
1497 | ** Allow O_NDELAY to open a drive without a disk, or with | |
1498 | ** an unreadable disk, so that we can get the format | |
1499 | ** capacity of the drive or begin the format - Sam | |
1500 | */ | |
1501 | ) { | |
1da177e4 LT |
1502 | ret = -EIO; |
1503 | goto out_put_floppy; | |
1504 | } | |
1505 | ||
1506 | if (floppy->wp && (filp->f_mode & 2)) { | |
1da177e4 LT |
1507 | ret = -EROFS; |
1508 | goto out_put_floppy; | |
1509 | } | |
6e5fa7b8 | 1510 | floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED; |
1da177e4 | 1511 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
6e5fa7b8 | 1512 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1513 | idefloppy_create_prevent_cmd(&pc, 1); |
1514 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1515 | } | |
1516 | check_disk_change(inode->i_bdev); | |
6e5fa7b8 | 1517 | } else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
1518 | ret = -EBUSY; |
1519 | goto out_put_floppy; | |
1520 | } | |
1521 | return 0; | |
1522 | ||
1523 | out_put_floppy: | |
c94964a4 | 1524 | floppy->openers--; |
1da177e4 LT |
1525 | ide_floppy_put(floppy); |
1526 | return ret; | |
1527 | } | |
1528 | ||
1529 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
1530 | { | |
1531 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1532 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1533 | ide_drive_t *drive = floppy->drive; | |
1534 | idefloppy_pc_t pc; | |
bcc77d9c BP |
1535 | |
1536 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 1537 | |
c94964a4 | 1538 | if (floppy->openers == 1) { |
1da177e4 | 1539 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
6e5fa7b8 | 1540 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1541 | idefloppy_create_prevent_cmd(&pc, 0); |
1542 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1543 | } | |
1544 | ||
6e5fa7b8 | 1545 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 1546 | } |
c94964a4 BZ |
1547 | |
1548 | floppy->openers--; | |
1da177e4 LT |
1549 | |
1550 | ide_floppy_put(floppy); | |
1551 | ||
1552 | return 0; | |
1553 | } | |
1554 | ||
a885c8c4 CH |
1555 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1556 | { | |
1557 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1558 | ide_drive_t *drive = floppy->drive; | |
1559 | ||
1560 | geo->heads = drive->bios_head; | |
1561 | geo->sectors = drive->bios_sect; | |
1562 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1563 | return 0; | |
1564 | } | |
1565 | ||
20bf7bda BP |
1566 | static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, |
1567 | unsigned long arg, unsigned int cmd) | |
1568 | { | |
1569 | if (floppy->openers > 1) | |
1570 | return -EBUSY; | |
1571 | ||
1572 | /* The IOMEGA Clik! Drive doesn't support this command - | |
1573 | * no room for an eject mechanism */ | |
6e5fa7b8 | 1574 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
20bf7bda BP |
1575 | int prevent = arg ? 1 : 0; |
1576 | ||
1577 | if (cmd == CDROMEJECT) | |
1578 | prevent = 0; | |
1579 | ||
1580 | idefloppy_create_prevent_cmd(pc, prevent); | |
1581 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1582 | } | |
1583 | ||
1584 | if (cmd == CDROMEJECT) { | |
1585 | idefloppy_create_start_stop_cmd(pc, 2); | |
1586 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1587 | } | |
1588 | ||
1589 | return 0; | |
1590 | } | |
1591 | ||
1592 | static int ide_floppy_format_unit(idefloppy_floppy_t *floppy, | |
1593 | int __user *arg) | |
1594 | { | |
1595 | int blocks, length, flags, err = 0; | |
1596 | idefloppy_pc_t pc; | |
1597 | ||
1598 | if (floppy->openers > 1) { | |
1599 | /* Don't format if someone is using the disk */ | |
6e5fa7b8 | 1600 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1601 | return -EBUSY; |
1602 | } | |
1603 | ||
6e5fa7b8 | 1604 | floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1605 | |
1606 | /* | |
1607 | * Send ATAPI_FORMAT_UNIT to the drive. | |
1608 | * | |
1609 | * Userland gives us the following structure: | |
1610 | * | |
1611 | * struct idefloppy_format_command { | |
1612 | * int nblocks; | |
1613 | * int blocksize; | |
1614 | * int flags; | |
1615 | * } ; | |
1616 | * | |
1617 | * flags is a bitmask, currently, the only defined flag is: | |
1618 | * | |
1619 | * 0x01 - verify media after format. | |
1620 | */ | |
1621 | if (get_user(blocks, arg) || | |
1622 | get_user(length, arg+1) || | |
1623 | get_user(flags, arg+2)) { | |
1624 | err = -EFAULT; | |
1625 | goto out; | |
1626 | } | |
1627 | ||
1628 | (void) idefloppy_get_sfrp_bit(floppy->drive); | |
1629 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); | |
1630 | ||
1631 | if (idefloppy_queue_pc_tail(floppy->drive, &pc)) | |
1632 | err = -EIO; | |
1633 | ||
1634 | out: | |
1635 | if (err) | |
6e5fa7b8 | 1636 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1637 | return err; |
1638 | } | |
1639 | ||
1640 | ||
1da177e4 LT |
1641 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
1642 | unsigned int cmd, unsigned long arg) | |
1643 | { | |
1644 | struct block_device *bdev = inode->i_bdev; | |
1645 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1646 | ide_drive_t *drive = floppy->drive; | |
20bf7bda | 1647 | idefloppy_pc_t pc; |
1da177e4 | 1648 | void __user *argp = (void __user *)arg; |
07203f64 | 1649 | int err; |
1da177e4 LT |
1650 | |
1651 | switch (cmd) { | |
1652 | case CDROMEJECT: | |
1da177e4 LT |
1653 | /* fall through */ |
1654 | case CDROM_LOCKDOOR: | |
20bf7bda | 1655 | return ide_floppy_lockdoor(floppy, &pc, arg, cmd); |
1da177e4 LT |
1656 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: |
1657 | return 0; | |
1658 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
194ec0c0 | 1659 | return ide_floppy_get_format_capacities(drive, argp); |
1da177e4 | 1660 | case IDEFLOPPY_IOCTL_FORMAT_START: |
1da177e4 LT |
1661 | if (!(file->f_mode & 2)) |
1662 | return -EPERM; | |
1663 | ||
20bf7bda | 1664 | return ide_floppy_format_unit(floppy, (int __user *)arg); |
1da177e4 LT |
1665 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: |
1666 | return idefloppy_get_format_progress(drive, argp); | |
1667 | } | |
89636af2 BZ |
1668 | |
1669 | /* | |
1670 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
1671 | * and CDROM_SEND_PACKET (legacy) ioctls | |
1672 | */ | |
1673 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
1674 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
1675 | bdev->bd_disk, cmd, argp); | |
1676 | else | |
1677 | err = -ENOTTY; | |
1678 | ||
1679 | if (err == -ENOTTY) | |
1680 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1681 | ||
1682 | return err; | |
1da177e4 LT |
1683 | } |
1684 | ||
1685 | static int idefloppy_media_changed(struct gendisk *disk) | |
1686 | { | |
1687 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1688 | ide_drive_t *drive = floppy->drive; | |
6e5fa7b8 | 1689 | int ret; |
1da177e4 LT |
1690 | |
1691 | /* do not scan partitions twice if this is a removable device */ | |
1692 | if (drive->attach) { | |
1693 | drive->attach = 0; | |
1694 | return 0; | |
1695 | } | |
6e5fa7b8 BP |
1696 | ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED); |
1697 | floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED; | |
1698 | return ret; | |
1da177e4 LT |
1699 | } |
1700 | ||
1701 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
1702 | { | |
1703 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1704 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | static struct block_device_operations idefloppy_ops = { | |
1709 | .owner = THIS_MODULE, | |
1710 | .open = idefloppy_open, | |
1711 | .release = idefloppy_release, | |
1712 | .ioctl = idefloppy_ioctl, | |
a885c8c4 | 1713 | .getgeo = idefloppy_getgeo, |
1da177e4 LT |
1714 | .media_changed = idefloppy_media_changed, |
1715 | .revalidate_disk= idefloppy_revalidate_disk | |
1716 | }; | |
1717 | ||
4031bbe4 | 1718 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
1719 | { |
1720 | idefloppy_floppy_t *floppy; | |
1721 | struct gendisk *g; | |
1722 | ||
1723 | if (!strstr("ide-floppy", drive->driver_req)) | |
1724 | goto failed; | |
1725 | if (!drive->present) | |
1726 | goto failed; | |
1727 | if (drive->media != ide_floppy) | |
1728 | goto failed; | |
1729 | if (!idefloppy_identify_device (drive, drive->id)) { | |
1730 | printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name); | |
1731 | goto failed; | |
1732 | } | |
1733 | if (drive->scsi) { | |
1734 | printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name); | |
1735 | goto failed; | |
1736 | } | |
5cbded58 | 1737 | if ((floppy = kzalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) { |
1da177e4 LT |
1738 | printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name); |
1739 | goto failed; | |
1740 | } | |
1741 | ||
1742 | g = alloc_disk(1 << PARTN_BITS); | |
1743 | if (!g) | |
1744 | goto out_free_floppy; | |
1745 | ||
1746 | ide_init_disk(g, drive); | |
1747 | ||
7662d046 | 1748 | ide_proc_register_driver(drive, &idefloppy_driver); |
1da177e4 | 1749 | |
1da177e4 LT |
1750 | kref_init(&floppy->kref); |
1751 | ||
1752 | floppy->drive = drive; | |
1753 | floppy->driver = &idefloppy_driver; | |
1754 | floppy->disk = g; | |
1755 | ||
1756 | g->private_data = &floppy->driver; | |
1757 | ||
1758 | drive->driver_data = floppy; | |
1759 | ||
1da177e4 | 1760 | idefloppy_setup (drive, floppy); |
8604affd | 1761 | |
1da177e4 LT |
1762 | g->minors = 1 << PARTN_BITS; |
1763 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
1764 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
1765 | g->fops = &idefloppy_ops; | |
1766 | drive->attach = 1; | |
1767 | add_disk(g); | |
1768 | return 0; | |
1769 | ||
1da177e4 LT |
1770 | out_free_floppy: |
1771 | kfree(floppy); | |
1772 | failed: | |
8604affd | 1773 | return -ENODEV; |
1da177e4 LT |
1774 | } |
1775 | ||
1776 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); | |
1777 | ||
1778 | static void __exit idefloppy_exit (void) | |
1779 | { | |
8604affd | 1780 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1781 | } |
1782 | ||
17514e8a | 1783 | static int __init idefloppy_init(void) |
1da177e4 LT |
1784 | { |
1785 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 1786 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1787 | } |
1788 | ||
263756ec | 1789 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
1790 | module_init(idefloppy_init); |
1791 | module_exit(idefloppy_exit); | |
1792 | MODULE_LICENSE("GPL"); |