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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 | |
0571c7a4 | 7 | * |
1da177e4 LT |
8 | * This driver supports the following IDE floppy drives: |
9 | * | |
10 | * LS-120/240 SuperDisk | |
11 | * Iomega Zip 100/250 | |
12 | * Iomega PC Card Clik!/PocketZip | |
13 | * | |
d3f20848 BP |
14 | * For a historical changelog see |
15 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 | |
1da177e4 LT |
16 | */ |
17 | ||
fc6c5bc7 | 18 | #define IDEFLOPPY_VERSION "1.00" |
1da177e4 | 19 | |
1da177e4 LT |
20 | #include <linux/module.h> |
21 | #include <linux/types.h> | |
22 | #include <linux/string.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/delay.h> | |
25 | #include <linux/timer.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/interrupt.h> | |
28 | #include <linux/major.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/genhd.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/cdrom.h> | |
33 | #include <linux/ide.h> | |
34 | #include <linux/bitops.h> | |
cf8b8975 | 35 | #include <linux/mutex.h> |
1da177e4 | 36 | |
89636af2 BZ |
37 | #include <scsi/scsi_ioctl.h> |
38 | ||
1da177e4 | 39 | #include <asm/byteorder.h> |
7e8b163b BP |
40 | #include <linux/irq.h> |
41 | #include <linux/uaccess.h> | |
42 | #include <linux/io.h> | |
1da177e4 LT |
43 | #include <asm/unaligned.h> |
44 | ||
f373bd82 | 45 | /* define to see debug info */ |
1da177e4 | 46 | #define IDEFLOPPY_DEBUG_LOG 0 |
1da177e4 LT |
47 | |
48 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ | |
0571c7a4 | 49 | #define IDEFLOPPY_DEBUG(fmt, args...) |
1da177e4 LT |
50 | |
51 | #if IDEFLOPPY_DEBUG_LOG | |
bcc77d9c BP |
52 | #define debug_log(fmt, args...) \ |
53 | printk(KERN_INFO "ide-floppy: " fmt, ## args) | |
1da177e4 | 54 | #else |
0571c7a4 | 55 | #define debug_log(fmt, args...) do {} while (0) |
1da177e4 LT |
56 | #endif |
57 | ||
58 | ||
0571c7a4 | 59 | /* Some drives require a longer irq timeout. */ |
1da177e4 LT |
60 | #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) |
61 | ||
62 | /* | |
0571c7a4 BP |
63 | * After each failed packet command we issue a request sense command and retry |
64 | * the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
1da177e4 LT |
65 | */ |
66 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
67 | ||
68 | /* | |
0571c7a4 BP |
69 | * With each packet command, we allocate a buffer of IDEFLOPPY_PC_BUFFER_SIZE |
70 | * bytes. | |
1da177e4 LT |
71 | */ |
72 | #define IDEFLOPPY_PC_BUFFER_SIZE 256 | |
73 | ||
74 | /* | |
0571c7a4 BP |
75 | * In various places in the driver, we need to allocate storage for packet |
76 | * commands and requests, which will remain valid while we leave the driver to | |
77 | * wait for an interrupt or a timeout event. | |
1da177e4 LT |
78 | */ |
79 | #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES) | |
80 | ||
194ec0c0 | 81 | /* format capacities descriptor codes */ |
1da177e4 LT |
82 | #define CAPACITY_INVALID 0x00 |
83 | #define CAPACITY_UNFORMATTED 0x01 | |
84 | #define CAPACITY_CURRENT 0x02 | |
85 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
86 | ||
87 | /* | |
0571c7a4 BP |
88 | * Most of our global data which we need to save even as we leave the driver |
89 | * due to an interrupt or a timer event is stored in a variable of type | |
90 | * idefloppy_floppy_t, defined below. | |
1da177e4 LT |
91 | */ |
92 | typedef struct ide_floppy_obj { | |
93 | ide_drive_t *drive; | |
94 | ide_driver_t *driver; | |
95 | struct gendisk *disk; | |
96 | struct kref kref; | |
c94964a4 | 97 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
98 | |
99 | /* Current packet command */ | |
8e555123 | 100 | struct ide_atapi_pc *pc; |
1da177e4 | 101 | /* Last failed packet command */ |
8e555123 | 102 | struct ide_atapi_pc *failed_pc; |
1da177e4 | 103 | /* Packet command stack */ |
8e555123 | 104 | struct ide_atapi_pc pc_stack[IDEFLOPPY_PC_STACK]; |
1da177e4 LT |
105 | /* Next free packet command storage space */ |
106 | int pc_stack_index; | |
107 | struct request rq_stack[IDEFLOPPY_PC_STACK]; | |
108 | /* We implement a circular array */ | |
109 | int rq_stack_index; | |
110 | ||
0571c7a4 | 111 | /* Last error information */ |
1da177e4 LT |
112 | u8 sense_key, asc, ascq; |
113 | /* delay this long before sending packet command */ | |
114 | u8 ticks; | |
115 | int progress_indication; | |
116 | ||
0571c7a4 | 117 | /* Device information */ |
1da177e4 LT |
118 | /* Current format */ |
119 | int blocks, block_size, bs_factor; | |
194ec0c0 BP |
120 | /* Last format capacity descriptor */ |
121 | u8 cap_desc[8]; | |
1da177e4 | 122 | /* Copy of the flexible disk page */ |
8e81bbba | 123 | u8 flexible_disk_page[32]; |
1da177e4 LT |
124 | /* Write protect */ |
125 | int wp; | |
126 | /* Supports format progress report */ | |
127 | int srfp; | |
1da177e4 LT |
128 | } idefloppy_floppy_t; |
129 | ||
c40d3d38 | 130 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 | 131 | |
0571c7a4 | 132 | /* Defines for the MODE SENSE command */ |
1da177e4 LT |
133 | #define MODE_SENSE_CURRENT 0x00 |
134 | #define MODE_SENSE_CHANGEABLE 0x01 | |
0571c7a4 | 135 | #define MODE_SENSE_DEFAULT 0x02 |
1da177e4 LT |
136 | #define MODE_SENSE_SAVED 0x03 |
137 | ||
0571c7a4 | 138 | /* IOCTLs used in low-level formatting. */ |
1da177e4 LT |
139 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 |
140 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 | |
141 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 | |
142 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 | |
143 | ||
0571c7a4 | 144 | /* Error code returned in rq->errors to the higher part of the driver. */ |
1da177e4 LT |
145 | #define IDEFLOPPY_ERROR_GENERAL 101 |
146 | ||
1da177e4 | 147 | /* |
948391d1 BP |
148 | * Pages of the SELECT SENSE / MODE SENSE packet commands. |
149 | * See SFF-8070i spec. | |
1da177e4 LT |
150 | */ |
151 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b | |
152 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 | |
153 | ||
cf8b8975 | 154 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
155 | |
156 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
157 | ||
158 | #define ide_floppy_g(disk) \ | |
159 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
160 | ||
08da591e BZ |
161 | static void idefloppy_cleanup_obj(struct kref *); |
162 | ||
1da177e4 LT |
163 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) |
164 | { | |
165 | struct ide_floppy_obj *floppy = NULL; | |
166 | ||
cf8b8975 | 167 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 | 168 | floppy = ide_floppy_g(disk); |
08da591e | 169 | if (floppy) { |
d3e33ff5 | 170 | if (ide_device_get(floppy->drive)) |
08da591e | 171 | floppy = NULL; |
d3e33ff5 BZ |
172 | else |
173 | kref_get(&floppy->kref); | |
08da591e | 174 | } |
cf8b8975 | 175 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
176 | return floppy; |
177 | } | |
178 | ||
1da177e4 LT |
179 | static void ide_floppy_put(struct ide_floppy_obj *floppy) |
180 | { | |
d3e33ff5 BZ |
181 | ide_drive_t *drive = floppy->drive; |
182 | ||
cf8b8975 | 183 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 184 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
d3e33ff5 | 185 | ide_device_put(drive); |
cf8b8975 | 186 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
187 | } |
188 | ||
1da177e4 | 189 | /* |
0571c7a4 BP |
190 | * Used to finish servicing a request. For read/write requests, we will call |
191 | * ide_end_request to pass to the next buffer. | |
1da177e4 | 192 | */ |
c2b2b293 | 193 | static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
1da177e4 LT |
194 | { |
195 | idefloppy_floppy_t *floppy = drive->driver_data; | |
196 | struct request *rq = HWGROUP(drive)->rq; | |
197 | int error; | |
198 | ||
bcc77d9c | 199 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
200 | |
201 | switch (uptodate) { | |
0571c7a4 BP |
202 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
203 | case 1: error = 0; break; | |
204 | default: error = uptodate; | |
1da177e4 LT |
205 | } |
206 | if (error) | |
207 | floppy->failed_pc = NULL; | |
208 | /* Why does this happen? */ | |
209 | if (!rq) | |
210 | return 0; | |
4aff5e23 | 211 | if (!blk_special_request(rq)) { |
1da177e4 LT |
212 | /* our real local end request function */ |
213 | ide_end_request(drive, uptodate, nsecs); | |
214 | return 0; | |
215 | } | |
216 | rq->errors = error; | |
217 | /* fixme: need to move this local also */ | |
218 | ide_end_drive_cmd(drive, 0, 0); | |
219 | return 0; | |
220 | } | |
221 | ||
8e555123 | 222 | static void ide_floppy_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, |
32925e1a | 223 | unsigned int bcount, int direction) |
1da177e4 | 224 | { |
9567b349 | 225 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 226 | struct request *rq = pc->rq; |
5705f702 | 227 | struct req_iterator iter; |
1da177e4 LT |
228 | struct bio_vec *bvec; |
229 | unsigned long flags; | |
5705f702 | 230 | int count, done = 0; |
1da177e4 LT |
231 | char *data; |
232 | ||
5705f702 | 233 | rq_for_each_segment(bvec, rq, iter) { |
6c92e699 JA |
234 | if (!bcount) |
235 | break; | |
1da177e4 | 236 | |
6c92e699 | 237 | count = min(bvec->bv_len, bcount); |
1da177e4 | 238 | |
6c92e699 | 239 | data = bvec_kmap_irq(bvec, &flags); |
32925e1a | 240 | if (direction) |
374e042c | 241 | hwif->tp_ops->output_data(drive, NULL, data, count); |
32925e1a | 242 | else |
374e042c | 243 | hwif->tp_ops->input_data(drive, NULL, data, count); |
6c92e699 | 244 | bvec_kunmap_irq(data, &flags); |
1da177e4 | 245 | |
6c92e699 JA |
246 | bcount -= count; |
247 | pc->b_count += count; | |
248 | done += count; | |
1da177e4 LT |
249 | } |
250 | ||
c2b2b293 | 251 | idefloppy_end_request(drive, 1, done >> 9); |
1da177e4 LT |
252 | |
253 | if (bcount) { | |
32925e1a BP |
254 | printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n", |
255 | drive->name, __func__, bcount); | |
9f87abe8 | 256 | ide_pad_transfer(drive, direction, bcount); |
1da177e4 LT |
257 | } |
258 | } | |
259 | ||
8e555123 BP |
260 | static void idefloppy_update_buffers(ide_drive_t *drive, |
261 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
262 | { |
263 | struct request *rq = pc->rq; | |
264 | struct bio *bio = rq->bio; | |
265 | ||
266 | while ((bio = rq->bio) != NULL) | |
c2b2b293 | 267 | idefloppy_end_request(drive, 1, 0); |
1da177e4 LT |
268 | } |
269 | ||
270 | /* | |
0571c7a4 BP |
271 | * Generate a new packet command request in front of the request queue, before |
272 | * the current request so that it will be processed immediately, on the next | |
273 | * pass through the driver. | |
1da177e4 | 274 | */ |
8e555123 | 275 | static void idefloppy_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc, |
0571c7a4 | 276 | struct request *rq) |
1da177e4 LT |
277 | { |
278 | struct ide_floppy_obj *floppy = drive->driver_data; | |
279 | ||
124cafc5 | 280 | blk_rq_init(NULL, rq); |
1da177e4 | 281 | rq->buffer = (char *) pc; |
4aff5e23 | 282 | rq->cmd_type = REQ_TYPE_SPECIAL; |
e8a96aa7 | 283 | rq->cmd_flags |= REQ_PREEMPT; |
1da177e4 | 284 | rq->rq_disk = floppy->disk; |
20cd93be | 285 | memcpy(rq->cmd, pc->c, 12); |
63f5abb0 | 286 | ide_do_drive_cmd(drive, rq); |
1da177e4 LT |
287 | } |
288 | ||
8e555123 | 289 | static struct ide_atapi_pc *idefloppy_next_pc_storage(ide_drive_t *drive) |
1da177e4 LT |
290 | { |
291 | idefloppy_floppy_t *floppy = drive->driver_data; | |
292 | ||
293 | if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK) | |
0571c7a4 | 294 | floppy->pc_stack_index = 0; |
1da177e4 LT |
295 | return (&floppy->pc_stack[floppy->pc_stack_index++]); |
296 | } | |
297 | ||
0571c7a4 | 298 | static struct request *idefloppy_next_rq_storage(ide_drive_t *drive) |
1da177e4 LT |
299 | { |
300 | idefloppy_floppy_t *floppy = drive->driver_data; | |
301 | ||
302 | if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) | |
303 | floppy->rq_stack_index = 0; | |
304 | return (&floppy->rq_stack[floppy->rq_stack_index++]); | |
305 | } | |
306 | ||
81f49382 | 307 | static void ide_floppy_callback(ide_drive_t *drive) |
1da177e4 LT |
308 | { |
309 | idefloppy_floppy_t *floppy = drive->driver_data; | |
81f49382 BP |
310 | struct ide_atapi_pc *pc = floppy->pc; |
311 | int uptodate = pc->error ? 0 : 1; | |
1da177e4 | 312 | |
bcc77d9c BP |
313 | debug_log("Reached %s\n", __func__); |
314 | ||
dd2e9a03 BZ |
315 | if (floppy->failed_pc == pc) |
316 | floppy->failed_pc = NULL; | |
317 | ||
81f49382 BP |
318 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
319 | (pc->rq && blk_pc_request(pc->rq))) | |
320 | uptodate = 1; /* FIXME */ | |
321 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
322 | u8 *buf = floppy->pc->buf; | |
a6ff2d3b | 323 | |
81f49382 BP |
324 | if (!pc->error) { |
325 | floppy->sense_key = buf[2] & 0x0F; | |
326 | floppy->asc = buf[12]; | |
327 | floppy->ascq = buf[13]; | |
328 | floppy->progress_indication = buf[15] & 0x80 ? | |
329 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 330 | |
81f49382 BP |
331 | if (floppy->failed_pc) |
332 | debug_log("pc = %x, ", floppy->failed_pc->c[0]); | |
bcc77d9c | 333 | |
81f49382 BP |
334 | debug_log("sense key = %x, asc = %x, ascq = %x\n", |
335 | floppy->sense_key, floppy->asc, floppy->ascq); | |
336 | } else | |
337 | printk(KERN_ERR "Error in REQUEST SENSE itself - " | |
338 | "Aborting request!\n"); | |
339 | } | |
1da177e4 | 340 | |
81f49382 | 341 | idefloppy_end_request(drive, uptodate, 0); |
1da177e4 LT |
342 | } |
343 | ||
8e555123 | 344 | static void idefloppy_init_pc(struct ide_atapi_pc *pc) |
1da177e4 | 345 | { |
68dc3575 | 346 | memset(pc, 0, sizeof(*pc)); |
8e555123 BP |
347 | pc->buf = pc->pc_buf; |
348 | pc->buf_size = IDEFLOPPY_PC_BUFFER_SIZE; | |
1da177e4 LT |
349 | } |
350 | ||
8e555123 | 351 | static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 352 | { |
30d67099 BP |
353 | idefloppy_init_pc(pc); |
354 | pc->c[0] = GPCMD_REQUEST_SENSE; | |
1da177e4 | 355 | pc->c[4] = 255; |
8e555123 | 356 | pc->req_xfer = 18; |
1da177e4 LT |
357 | } |
358 | ||
359 | /* | |
0571c7a4 BP |
360 | * Called when an error was detected during the last packet command. We queue a |
361 | * request sense packet command in the head of the request list. | |
1da177e4 | 362 | */ |
0571c7a4 | 363 | static void idefloppy_retry_pc(ide_drive_t *drive) |
1da177e4 | 364 | { |
8e555123 | 365 | struct ide_atapi_pc *pc; |
1da177e4 | 366 | struct request *rq; |
1da177e4 | 367 | |
64a57fe4 | 368 | (void)ide_read_error(drive); |
1da177e4 LT |
369 | pc = idefloppy_next_pc_storage(drive); |
370 | rq = idefloppy_next_rq_storage(drive); | |
371 | idefloppy_create_request_sense_cmd(pc); | |
372 | idefloppy_queue_pc_head(drive, pc, rq); | |
373 | } | |
374 | ||
0eea6458 | 375 | /* The usual interrupt handler called during a packet command. */ |
52d3ccf7 | 376 | static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) |
1da177e4 LT |
377 | { |
378 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1da177e4 | 379 | |
646c0cb6 BZ |
380 | return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr, |
381 | IDEFLOPPY_WAIT_CMD, NULL, idefloppy_update_buffers, | |
382 | idefloppy_retry_pc, NULL, ide_floppy_io_buffers); | |
1da177e4 LT |
383 | } |
384 | ||
1da177e4 | 385 | /* |
0571c7a4 BP |
386 | * What we have here is a classic case of a top half / bottom half interrupt |
387 | * service routine. In interrupt mode, the device sends an interrupt to signal | |
388 | * that it is ready to receive a packet. However, we need to delay about 2-3 | |
389 | * ticks before issuing the packet or we gets in trouble. | |
1da177e4 | 390 | */ |
cbbc4e81 | 391 | static int idefloppy_transfer_pc(ide_drive_t *drive) |
1da177e4 LT |
392 | { |
393 | idefloppy_floppy_t *floppy = drive->driver_data; | |
394 | ||
395 | /* Send the actual packet */ | |
374e042c | 396 | drive->hwif->tp_ops->output_data(drive, NULL, floppy->pc->c, 12); |
9567b349 | 397 | |
1da177e4 LT |
398 | /* Timeout for the packet command */ |
399 | return IDEFLOPPY_WAIT_CMD; | |
400 | } | |
401 | ||
cbbc4e81 BP |
402 | |
403 | /* | |
404 | * Called as an interrupt (or directly). When the device says it's ready for a | |
405 | * packet, we schedule the packet transfer to occur about 2-3 ticks later in | |
406 | * transfer_pc. | |
407 | */ | |
408 | static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive) | |
1da177e4 LT |
409 | { |
410 | idefloppy_floppy_t *floppy = drive->driver_data; | |
6ffb6641 | 411 | struct ide_atapi_pc *pc = floppy->pc; |
0b2eea4c BZ |
412 | ide_expiry_t *expiry; |
413 | unsigned int timeout; | |
1da177e4 | 414 | |
0571c7a4 | 415 | /* |
1da177e4 LT |
416 | * The following delay solves a problem with ATAPI Zip 100 drives |
417 | * where the Busy flag was apparently being deasserted before the | |
418 | * unit was ready to receive data. This was happening on a | |
419 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
420 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
421 | * used until after the packet is moved in about 50 msec. | |
422 | */ | |
ea68d270 | 423 | if (drive->atapi_flags & IDE_AFLAG_ZIP_DRIVE) { |
0b2eea4c | 424 | timeout = floppy->ticks; |
cbbc4e81 | 425 | expiry = &idefloppy_transfer_pc; |
0b2eea4c BZ |
426 | } else { |
427 | timeout = IDEFLOPPY_WAIT_CMD; | |
428 | expiry = NULL; | |
429 | } | |
430 | ||
594c16d8 | 431 | return ide_transfer_pc(drive, pc, idefloppy_pc_intr, timeout, expiry); |
1da177e4 LT |
432 | } |
433 | ||
d652c138 | 434 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
8e555123 | 435 | struct ide_atapi_pc *pc) |
1da177e4 | 436 | { |
d652c138 | 437 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
438 | if (floppy->sense_key == 0x02 && |
439 | floppy->asc == 0x3a && | |
440 | floppy->ascq == 0x00) | |
d652c138 BP |
441 | return; |
442 | ||
443 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
444 | "asc = %2x, ascq = %2x\n", | |
445 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
446 | floppy->asc, floppy->ascq); | |
447 | ||
1da177e4 LT |
448 | } |
449 | ||
0571c7a4 | 450 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 451 | struct ide_atapi_pc *pc) |
1da177e4 LT |
452 | { |
453 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1da177e4 | 454 | |
1da177e4 | 455 | if (floppy->failed_pc == NULL && |
30d67099 | 456 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 LT |
457 | floppy->failed_pc = pc; |
458 | /* Set the current packet command */ | |
459 | floppy->pc = pc; | |
460 | ||
757ced89 | 461 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 462 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
463 | ide_floppy_report_error(floppy, pc); |
464 | /* Giving up */ | |
465 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
466 | ||
1da177e4 | 467 | floppy->failed_pc = NULL; |
2207fa5a | 468 | drive->pc_callback(drive); |
1da177e4 LT |
469 | return ide_stopped; |
470 | } | |
471 | ||
bcc77d9c | 472 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
473 | |
474 | pc->retries++; | |
1da177e4 | 475 | |
cbbc4e81 | 476 | return ide_issue_pc(drive, pc, idefloppy_start_pc_transfer, |
6bf1641c | 477 | IDEFLOPPY_WAIT_CMD, NULL); |
1da177e4 LT |
478 | } |
479 | ||
8e555123 | 480 | static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent) |
1da177e4 | 481 | { |
bcc77d9c | 482 | debug_log("creating prevent removal command, prevent = %d\n", prevent); |
1da177e4 LT |
483 | |
484 | idefloppy_init_pc(pc); | |
30d67099 | 485 | pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
1da177e4 LT |
486 | pc->c[4] = prevent; |
487 | } | |
488 | ||
8e555123 | 489 | static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 LT |
490 | { |
491 | idefloppy_init_pc(pc); | |
30d67099 | 492 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
493 | pc->c[7] = 255; |
494 | pc->c[8] = 255; | |
8e555123 | 495 | pc->req_xfer = 255; |
1da177e4 LT |
496 | } |
497 | ||
8e555123 BP |
498 | static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b, |
499 | int l, int flags) | |
1da177e4 LT |
500 | { |
501 | idefloppy_init_pc(pc); | |
30d67099 | 502 | pc->c[0] = GPCMD_FORMAT_UNIT; |
1da177e4 LT |
503 | pc->c[1] = 0x17; |
504 | ||
8e555123 BP |
505 | memset(pc->buf, 0, 12); |
506 | pc->buf[1] = 0xA2; | |
1da177e4 LT |
507 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ |
508 | ||
509 | if (flags & 1) /* Verify bit on... */ | |
8e555123 BP |
510 | pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */ |
511 | pc->buf[3] = 8; | |
1da177e4 | 512 | |
8e555123 BP |
513 | put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4])); |
514 | put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8])); | |
515 | pc->buf_size = 12; | |
6e5fa7b8 | 516 | pc->flags |= PC_FLAG_WRITING; |
1da177e4 LT |
517 | } |
518 | ||
0571c7a4 | 519 | /* A mode sense command is used to "sense" floppy parameters. */ |
8e555123 BP |
520 | static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, |
521 | u8 page_code, u8 type) | |
1da177e4 | 522 | { |
24a5d703 | 523 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 524 | |
1da177e4 | 525 | idefloppy_init_pc(pc); |
30d67099 | 526 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 LT |
527 | pc->c[1] = 0; |
528 | pc->c[2] = page_code + (type << 6); | |
529 | ||
530 | switch (page_code) { | |
0571c7a4 BP |
531 | case IDEFLOPPY_CAPABILITIES_PAGE: |
532 | length += 12; | |
533 | break; | |
534 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
535 | length += 32; | |
536 | break; | |
537 | default: | |
538 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1da177e4 LT |
539 | "in create_mode_sense_cmd\n"); |
540 | } | |
8f622430 | 541 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 542 | pc->req_xfer = length; |
1da177e4 LT |
543 | } |
544 | ||
8e555123 | 545 | static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start) |
1da177e4 LT |
546 | { |
547 | idefloppy_init_pc(pc); | |
30d67099 | 548 | pc->c[0] = GPCMD_START_STOP_UNIT; |
1da177e4 LT |
549 | pc->c[4] = start; |
550 | } | |
551 | ||
ae7e8ddc | 552 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 553 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 554 | unsigned long sector) |
1da177e4 LT |
555 | { |
556 | int block = sector / floppy->bs_factor; | |
557 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
558 | int cmd = rq_data_dir(rq); | |
559 | ||
ae7e8ddc | 560 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
561 | block, blocks); |
562 | ||
563 | idefloppy_init_pc(pc); | |
ae7e8ddc BP |
564 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
565 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 566 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 567 | |
20cd93be BP |
568 | memcpy(rq->cmd, pc->c, 12); |
569 | ||
1da177e4 LT |
570 | pc->rq = rq; |
571 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; | |
4aff5e23 | 572 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 573 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
574 | pc->buf = NULL; |
575 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
5e331095 | 576 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
577 | } |
578 | ||
0571c7a4 | 579 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 580 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 581 | { |
1da177e4 LT |
582 | idefloppy_init_pc(pc); |
583 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); | |
3d6392cf JA |
584 | pc->rq = rq; |
585 | pc->b_count = rq->data_len; | |
586 | if (rq->data_len && rq_data_dir(rq) == WRITE) | |
6e5fa7b8 | 587 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 588 | pc->buf = rq->data; |
3d6392cf | 589 | if (rq->bio) |
5e331095 | 590 | pc->flags |= PC_FLAG_DMA_OK; |
3d6392cf JA |
591 | /* |
592 | * possibly problematic, doesn't look like ide-floppy correctly | |
593 | * handled scattered requests if dma fails... | |
594 | */ | |
8e555123 | 595 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
596 | } |
597 | ||
0571c7a4 BP |
598 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
599 | struct request *rq, sector_t block_s) | |
1da177e4 LT |
600 | { |
601 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 602 | struct ide_atapi_pc *pc; |
1da177e4 LT |
603 | unsigned long block = (unsigned long)block_s; |
604 | ||
bcc77d9c | 605 | debug_log("dev: %s, cmd_type: %x, errors: %d\n", |
18cddac3 | 606 | rq->rq_disk ? rq->rq_disk->disk_name : "?", |
bcc77d9c BP |
607 | rq->cmd_type, rq->errors); |
608 | debug_log("sector: %ld, nr_sectors: %ld, " | |
1da177e4 LT |
609 | "current_nr_sectors: %d\n", (long)rq->sector, |
610 | rq->nr_sectors, rq->current_nr_sectors); | |
611 | ||
612 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
613 | if (floppy->failed_pc) |
614 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
615 | else |
616 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
617 | drive->name); | |
c2b2b293 | 618 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
619 | return ide_stopped; |
620 | } | |
4aff5e23 | 621 | if (blk_fs_request(rq)) { |
1da177e4 LT |
622 | if (((long)rq->sector % floppy->bs_factor) || |
623 | (rq->nr_sectors % floppy->bs_factor)) { | |
0571c7a4 BP |
624 | printk(KERN_ERR "%s: unsupported r/w request size\n", |
625 | drive->name); | |
c2b2b293 | 626 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
627 | return ide_stopped; |
628 | } | |
629 | pc = idefloppy_next_pc_storage(drive); | |
630 | idefloppy_create_rw_cmd(floppy, pc, rq, block); | |
4aff5e23 | 631 | } else if (blk_special_request(rq)) { |
8e555123 | 632 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 633 | } else if (blk_pc_request(rq)) { |
1da177e4 | 634 | pc = idefloppy_next_pc_storage(drive); |
3d6392cf | 635 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
636 | } else { |
637 | blk_dump_rq_flags(rq, | |
638 | "ide-floppy: unsupported command in queue"); | |
c2b2b293 | 639 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
640 | return ide_stopped; |
641 | } | |
642 | ||
643 | pc->rq = rq; | |
5d41893c | 644 | |
1da177e4 LT |
645 | return idefloppy_issue_pc(drive, pc); |
646 | } | |
647 | ||
648 | /* | |
0571c7a4 BP |
649 | * Add a special packet command request to the tail of the request queue, |
650 | * and wait for it to be serviced. | |
1da177e4 | 651 | */ |
8e555123 | 652 | static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc) |
1da177e4 LT |
653 | { |
654 | struct ide_floppy_obj *floppy = drive->driver_data; | |
6fe16238 FT |
655 | struct request *rq; |
656 | int error; | |
1da177e4 | 657 | |
6fe16238 FT |
658 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
659 | rq->buffer = (char *) pc; | |
660 | rq->cmd_type = REQ_TYPE_SPECIAL; | |
20cd93be | 661 | memcpy(rq->cmd, pc->c, 12); |
6fe16238 FT |
662 | error = blk_execute_rq(drive->queue, floppy->disk, rq, 0); |
663 | blk_put_request(rq); | |
1da177e4 | 664 | |
6fe16238 | 665 | return error; |
1da177e4 LT |
666 | } |
667 | ||
668 | /* | |
8e81bbba BP |
669 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
670 | * parameters and use the LBA parameters instead. | |
1da177e4 | 671 | */ |
8e81bbba | 672 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
673 | { |
674 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 675 | struct ide_atapi_pc pc; |
8e81bbba | 676 | u8 *page; |
1da177e4 | 677 | int capacity, lba_capacity; |
8e81bbba BP |
678 | u16 transfer_rate, sector_size, cyls, rpm; |
679 | u8 heads, sectors; | |
1da177e4 | 680 | |
8e81bbba BP |
681 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, |
682 | MODE_SENSE_CURRENT); | |
683 | ||
684 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
685 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" | |
686 | " parameters\n"); | |
1da177e4 LT |
687 | return 1; |
688 | } | |
8e555123 | 689 | floppy->wp = !!(pc.buf[3] & 0x80); |
1da177e4 | 690 | set_disk_ro(floppy->disk, floppy->wp); |
8e555123 | 691 | page = &pc.buf[8]; |
8e81bbba | 692 | |
85ae98a3 HH |
693 | transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]); |
694 | sector_size = be16_to_cpup((__be16 *)&pc.buf[8 + 6]); | |
695 | cyls = be16_to_cpup((__be16 *)&pc.buf[8 + 8]); | |
696 | rpm = be16_to_cpup((__be16 *)&pc.buf[8 + 28]); | |
8e555123 BP |
697 | heads = pc.buf[8 + 4]; |
698 | sectors = pc.buf[8 + 5]; | |
8e81bbba BP |
699 | |
700 | capacity = cyls * heads * sectors * sector_size; | |
701 | ||
702 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
703 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
704 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
705 | drive->name, capacity / 1024, cyls, heads, |
706 | sectors, transfer_rate / 8, sector_size, rpm); | |
707 | ||
708 | memcpy(&floppy->flexible_disk_page, page, 32); | |
709 | drive->bios_cyl = cyls; | |
710 | drive->bios_head = heads; | |
711 | drive->bios_sect = sectors; | |
1da177e4 | 712 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 713 | |
1da177e4 LT |
714 | if (capacity < lba_capacity) { |
715 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
716 | "bytes, but the drive only handles %d\n", | |
717 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
718 | floppy->blocks = floppy->block_size ? |
719 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
720 | } |
721 | return 0; | |
722 | } | |
723 | ||
948391d1 | 724 | static int idefloppy_get_sfrp_bit(ide_drive_t *drive) |
1da177e4 LT |
725 | { |
726 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 727 | struct ide_atapi_pc pc; |
1da177e4 LT |
728 | |
729 | floppy->srfp = 0; | |
730 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, | |
731 | MODE_SENSE_CURRENT); | |
732 | ||
6e5fa7b8 | 733 | pc.flags |= PC_FLAG_SUPPRESS_ERROR; |
948391d1 | 734 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 735 | return 1; |
1da177e4 | 736 | |
8e555123 | 737 | floppy->srfp = pc.buf[8 + 2] & 0x40; |
1da177e4 LT |
738 | return (0); |
739 | } | |
740 | ||
741 | /* | |
194ec0c0 BP |
742 | * Determine if a media is present in the floppy drive, and if so, its LBA |
743 | * capacity. | |
1da177e4 | 744 | */ |
194ec0c0 | 745 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
746 | { |
747 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 748 | struct ide_atapi_pc pc; |
194ec0c0 BP |
749 | u8 *cap_desc; |
750 | u8 header_len, desc_cnt; | |
751 | int i, rc = 1, blocks, length; | |
752 | ||
1da177e4 LT |
753 | drive->bios_cyl = 0; |
754 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
755 | floppy->blocks = 0; |
756 | floppy->bs_factor = 1; | |
1da177e4 LT |
757 | set_capacity(floppy->disk, 0); |
758 | ||
759 | idefloppy_create_read_capacity_cmd(&pc); | |
760 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
761 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
762 | return 1; | |
763 | } | |
8e555123 BP |
764 | header_len = pc.buf[3]; |
765 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
766 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
767 | ||
768 | for (i = 0; i < desc_cnt; i++) { | |
769 | unsigned int desc_start = 4 + i*8; | |
770 | ||
85ae98a3 HH |
771 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
772 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 BP |
773 | |
774 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
775 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 776 | |
194ec0c0 BP |
777 | if (i) |
778 | continue; | |
779 | /* | |
780 | * the code below is valid only for the 1st descriptor, ie i=0 | |
781 | */ | |
1da177e4 | 782 | |
8e555123 | 783 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
784 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
785 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 786 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 787 | /* |
1da177e4 LT |
788 | * If it is not a clik drive, break out |
789 | * (maintains previous driver behaviour) | |
790 | */ | |
791 | break; | |
792 | case CAPACITY_CURRENT: | |
793 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 794 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
795 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
796 | "sector size\n", drive->name, | |
797 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
798 | memcpy(&floppy->cap_desc, cap_desc, 8); |
799 | ||
1da177e4 LT |
800 | if (!length || length % 512) { |
801 | printk(KERN_NOTICE "%s: %d bytes block size " | |
802 | "not supported\n", drive->name, length); | |
803 | } else { | |
194ec0c0 BP |
804 | floppy->blocks = blocks; |
805 | floppy->block_size = length; | |
806 | floppy->bs_factor = length / 512; | |
807 | if (floppy->bs_factor != 1) | |
808 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
809 | "512 bytes block size not " |
810 | "fully supported\n", | |
811 | drive->name); | |
194ec0c0 | 812 | rc = 0; |
1da177e4 LT |
813 | } |
814 | break; | |
815 | case CAPACITY_NO_CARTRIDGE: | |
816 | /* | |
817 | * This is a KERN_ERR so it appears on screen | |
818 | * for the user to see | |
819 | */ | |
820 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
821 | break; | |
822 | case CAPACITY_INVALID: | |
823 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
824 | "in drive\n", drive->name); | |
825 | break; | |
826 | } | |
194ec0c0 | 827 | debug_log("Descriptor 0 Code: %d\n", |
8e555123 | 828 | pc.buf[desc_start + 4] & 0x03); |
1da177e4 LT |
829 | } |
830 | ||
831 | /* Clik! disk does not support get_flexible_disk_page */ | |
ea68d270 | 832 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
8e81bbba | 833 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 LT |
834 | |
835 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); | |
836 | return rc; | |
837 | } | |
838 | ||
839 | /* | |
194ec0c0 BP |
840 | * Obtain the list of formattable capacities. |
841 | * Very similar to ide_floppy_get_capacity, except that we push the capacity | |
842 | * descriptors to userland, instead of our own structures. | |
843 | * | |
844 | * Userland gives us the following structure: | |
845 | * | |
846 | * struct idefloppy_format_capacities { | |
847 | * int nformats; | |
848 | * struct { | |
849 | * int nblocks; | |
850 | * int blocksize; | |
851 | * } formats[]; | |
852 | * }; | |
853 | * | |
854 | * userland initializes nformats to the number of allocated formats[] records. | |
855 | * On exit we set nformats to the number of records we've actually initialized. | |
856 | */ | |
1da177e4 | 857 | |
194ec0c0 | 858 | static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
1da177e4 | 859 | { |
8e555123 | 860 | struct ide_atapi_pc pc; |
194ec0c0 BP |
861 | u8 header_len, desc_cnt; |
862 | int i, blocks, length, u_array_size, u_index; | |
1da177e4 LT |
863 | int __user *argp; |
864 | ||
865 | if (get_user(u_array_size, arg)) | |
866 | return (-EFAULT); | |
867 | ||
868 | if (u_array_size <= 0) | |
869 | return (-EINVAL); | |
870 | ||
871 | idefloppy_create_read_capacity_cmd(&pc); | |
872 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
873 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
194ec0c0 BP |
874 | return (-EIO); |
875 | } | |
8e555123 | 876 | header_len = pc.buf[3]; |
194ec0c0 | 877 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
1da177e4 LT |
878 | |
879 | u_index = 0; | |
880 | argp = arg + 1; | |
881 | ||
882 | /* | |
194ec0c0 BP |
883 | * We always skip the first capacity descriptor. That's the current |
884 | * capacity. We are interested in the remaining descriptors, the | |
885 | * formattable capacities. | |
886 | */ | |
887 | for (i = 1; i < desc_cnt; i++) { | |
888 | unsigned int desc_start = 4 + i*8; | |
1da177e4 | 889 | |
1da177e4 LT |
890 | if (u_index >= u_array_size) |
891 | break; /* User-supplied buffer too small */ | |
1da177e4 | 892 | |
85ae98a3 HH |
893 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
894 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
1da177e4 LT |
895 | |
896 | if (put_user(blocks, argp)) | |
897 | return(-EFAULT); | |
898 | ++argp; | |
899 | ||
900 | if (put_user(length, argp)) | |
901 | return (-EFAULT); | |
902 | ++argp; | |
903 | ||
904 | ++u_index; | |
905 | } | |
906 | ||
907 | if (put_user(u_index, arg)) | |
908 | return (-EFAULT); | |
909 | return (0); | |
910 | } | |
911 | ||
1da177e4 | 912 | /* |
0571c7a4 BP |
913 | * Get ATAPI_FORMAT_UNIT progress indication. |
914 | * | |
915 | * Userland gives a pointer to an int. The int is set to a progress | |
916 | * indicator 0-65536, with 65536=100%. | |
917 | * | |
918 | * If the drive does not support format progress indication, we just check | |
919 | * the dsc bit, and return either 0 or 65536. | |
920 | */ | |
1da177e4 LT |
921 | |
922 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) | |
923 | { | |
924 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 925 | struct ide_atapi_pc pc; |
1da177e4 LT |
926 | int progress_indication = 0x10000; |
927 | ||
928 | if (floppy->srfp) { | |
929 | idefloppy_create_request_sense_cmd(&pc); | |
0571c7a4 | 930 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 931 | return (-EIO); |
1da177e4 LT |
932 | |
933 | if (floppy->sense_key == 2 && | |
934 | floppy->asc == 4 && | |
0571c7a4 | 935 | floppy->ascq == 4) |
1da177e4 | 936 | progress_indication = floppy->progress_indication; |
0571c7a4 BP |
937 | |
938 | /* Else assume format_unit has finished, and we're at 0x10000 */ | |
1da177e4 | 939 | } else { |
b73c7ee2 | 940 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 941 | unsigned long flags; |
22c525b9 | 942 | u8 stat; |
1da177e4 LT |
943 | |
944 | local_irq_save(flags); | |
374e042c | 945 | stat = hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
946 | local_irq_restore(flags); |
947 | ||
3a7d2484 | 948 | progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000; |
1da177e4 LT |
949 | } |
950 | if (put_user(progress_indication, arg)) | |
951 | return (-EFAULT); | |
952 | ||
953 | return (0); | |
954 | } | |
955 | ||
0571c7a4 | 956 | static sector_t idefloppy_capacity(ide_drive_t *drive) |
1da177e4 LT |
957 | { |
958 | idefloppy_floppy_t *floppy = drive->driver_data; | |
959 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
960 | ||
961 | return capacity; | |
962 | } | |
963 | ||
964 | /* | |
f373bd82 BP |
965 | * Check whether we can support a drive, based on the ATAPI IDENTIFY command |
966 | * results. | |
1da177e4 | 967 | */ |
4dde4492 | 968 | static int idefloppy_identify_device(ide_drive_t *drive, u16 *id) |
1da177e4 | 969 | { |
3ad6776c BP |
970 | u8 gcw[2]; |
971 | u8 device_type, protocol, removable, drq_type, packet_size; | |
1da177e4 | 972 | |
4dde4492 | 973 | *((u16 *)&gcw) = id[ATA_ID_CONFIG]; |
1da177e4 | 974 | |
3ad6776c BP |
975 | device_type = gcw[1] & 0x1F; |
976 | removable = (gcw[0] & 0x80) >> 7; | |
977 | protocol = (gcw[1] & 0xC0) >> 6; | |
978 | drq_type = (gcw[0] & 0x60) >> 5; | |
979 | packet_size = gcw[0] & 0x03; | |
980 | ||
1da177e4 LT |
981 | #ifdef CONFIG_PPC |
982 | /* kludge for Apple PowerBook internal zip */ | |
3ad6776c | 983 | if (device_type == 5 && |
4dde4492 BZ |
984 | !strstr((char *)&id[ATA_ID_PROD], "CD-ROM") && |
985 | strstr((char *)&id[ATA_ID_PROD], "ZIP")) | |
3ad6776c | 986 | device_type = 0; |
1da177e4 LT |
987 | #endif |
988 | ||
3ad6776c | 989 | if (protocol != 2) |
f373bd82 | 990 | printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n", |
3ad6776c BP |
991 | protocol); |
992 | else if (device_type != 0) | |
f373bd82 | 993 | printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set " |
3ad6776c BP |
994 | "to floppy\n", device_type); |
995 | else if (!removable) | |
1da177e4 | 996 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); |
3ad6776c | 997 | else if (drq_type == 3) |
f373bd82 | 998 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not " |
3ad6776c BP |
999 | "supported\n", drq_type); |
1000 | else if (packet_size != 0) | |
f373bd82 | 1001 | printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 " |
3ad6776c BP |
1002 | "bytes\n", packet_size); |
1003 | else | |
1da177e4 LT |
1004 | return 1; |
1005 | return 0; | |
1006 | } | |
1007 | ||
7662d046 | 1008 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1009 | static void idefloppy_add_settings(ide_drive_t *drive) |
1010 | { | |
1011 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1012 | ||
0571c7a4 BP |
1013 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, |
1014 | &drive->bios_cyl, NULL); | |
1015 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, | |
1016 | &drive->bios_head, NULL); | |
1017 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, | |
1018 | &drive->bios_sect, NULL); | |
1019 | ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, | |
1020 | &floppy->ticks, NULL); | |
1da177e4 | 1021 | } |
7662d046 BZ |
1022 | #else |
1023 | static inline void idefloppy_add_settings(ide_drive_t *drive) { ; } | |
1024 | #endif | |
1da177e4 | 1025 | |
0571c7a4 | 1026 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
1da177e4 | 1027 | { |
4dde4492 | 1028 | u16 *id = drive->id; |
3ad6776c | 1029 | u8 gcw[2]; |
1da177e4 | 1030 | |
4dde4492 | 1031 | *((u16 *)&gcw) = id[ATA_ID_CONFIG]; |
1da177e4 | 1032 | floppy->pc = floppy->pc_stack; |
2207fa5a | 1033 | drive->pc_callback = ide_floppy_callback; |
3ad6776c BP |
1034 | |
1035 | if (((gcw[0] & 0x60) >> 5) == 1) | |
ea68d270 | 1036 | drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT; |
1da177e4 | 1037 | /* |
0571c7a4 BP |
1038 | * We used to check revisions here. At this point however I'm giving up. |
1039 | * Just assume they are all broken, its easier. | |
1da177e4 | 1040 | * |
0571c7a4 BP |
1041 | * The actual reason for the workarounds was likely a driver bug after |
1042 | * all rather than a firmware bug, and the workaround below used to hide | |
1043 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
1044 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 1045 | */ |
4dde4492 | 1046 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
ea68d270 | 1047 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 LT |
1048 | /* This value will be visible in the /proc/ide/hdx/settings */ |
1049 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
1050 | blk_queue_max_sectors(drive->queue, 64); | |
1051 | } | |
1052 | ||
1053 | /* | |
0571c7a4 BP |
1054 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
1055 | * nasty clicking noises without it, so please don't remove this. | |
1056 | */ | |
4dde4492 | 1057 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
1da177e4 | 1058 | blk_queue_max_sectors(drive->queue, 64); |
ea68d270 | 1059 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
1da177e4 LT |
1060 | } |
1061 | ||
194ec0c0 | 1062 | (void) ide_floppy_get_capacity(drive); |
1da177e4 LT |
1063 | idefloppy_add_settings(drive); |
1064 | } | |
1065 | ||
4031bbe4 | 1066 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
1067 | { |
1068 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1069 | struct gendisk *g = floppy->disk; | |
1070 | ||
7662d046 | 1071 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
1072 | |
1073 | del_gendisk(g); | |
1074 | ||
1075 | ide_floppy_put(floppy); | |
1da177e4 LT |
1076 | } |
1077 | ||
9a24b63d | 1078 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 LT |
1079 | { |
1080 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
1081 | ide_drive_t *drive = floppy->drive; | |
1082 | struct gendisk *g = floppy->disk; | |
1083 | ||
1084 | drive->driver_data = NULL; | |
1085 | g->private_data = NULL; | |
1086 | put_disk(g); | |
1087 | kfree(floppy); | |
1088 | } | |
1089 | ||
ecfd80e4 | 1090 | #ifdef CONFIG_IDE_PROC_FS |
0571c7a4 BP |
1091 | static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, |
1092 | int count, int *eof, void *data) | |
1da177e4 LT |
1093 | { |
1094 | ide_drive_t*drive = (ide_drive_t *)data; | |
1095 | int len; | |
1096 | ||
0571c7a4 BP |
1097 | len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); |
1098 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
1099 | } |
1100 | ||
1101 | static ide_proc_entry_t idefloppy_proc[] = { | |
0571c7a4 BP |
1102 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
1103 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1da177e4 LT |
1104 | { NULL, 0, NULL, NULL } |
1105 | }; | |
ecfd80e4 | 1106 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 1107 | |
4031bbe4 | 1108 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 1109 | |
1da177e4 | 1110 | static ide_driver_t idefloppy_driver = { |
8604affd | 1111 | .gen_driver = { |
4ef3b8f4 | 1112 | .owner = THIS_MODULE, |
8604affd BZ |
1113 | .name = "ide-floppy", |
1114 | .bus = &ide_bus_type, | |
8604affd | 1115 | }, |
4031bbe4 RK |
1116 | .probe = ide_floppy_probe, |
1117 | .remove = ide_floppy_remove, | |
1da177e4 LT |
1118 | .version = IDEFLOPPY_VERSION, |
1119 | .media = ide_floppy, | |
1da177e4 | 1120 | .supports_dsc_overlap = 0, |
1da177e4 | 1121 | .do_request = idefloppy_do_request, |
c2b2b293 | 1122 | .end_request = idefloppy_end_request, |
1da177e4 | 1123 | .error = __ide_error, |
7662d046 | 1124 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1125 | .proc = idefloppy_proc, |
7662d046 | 1126 | #endif |
1da177e4 LT |
1127 | }; |
1128 | ||
1129 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
1130 | { | |
1131 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1132 | struct ide_floppy_obj *floppy; | |
1133 | ide_drive_t *drive; | |
8e555123 | 1134 | struct ide_atapi_pc pc; |
1da177e4 LT |
1135 | int ret = 0; |
1136 | ||
bcc77d9c | 1137 | debug_log("Reached %s\n", __func__); |
1da177e4 | 1138 | |
0571c7a4 BP |
1139 | floppy = ide_floppy_get(disk); |
1140 | if (!floppy) | |
1da177e4 LT |
1141 | return -ENXIO; |
1142 | ||
1143 | drive = floppy->drive; | |
1144 | ||
c94964a4 | 1145 | floppy->openers++; |
1da177e4 | 1146 | |
c94964a4 | 1147 | if (floppy->openers == 1) { |
ea68d270 | 1148 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
1149 | /* Just in case */ |
1150 | ||
c96a7df8 BP |
1151 | idefloppy_init_pc(&pc); |
1152 | pc.c[0] = GPCMD_TEST_UNIT_READY; | |
1153 | ||
1da177e4 LT |
1154 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
1155 | idefloppy_create_start_stop_cmd(&pc, 1); | |
1156 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1157 | } | |
1158 | ||
194ec0c0 | 1159 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
1160 | && (filp->f_flags & O_NDELAY) == 0 |
1161 | /* | |
0571c7a4 BP |
1162 | * Allow O_NDELAY to open a drive without a disk, or with an |
1163 | * unreadable disk, so that we can get the format capacity | |
1164 | * of the drive or begin the format - Sam | |
1165 | */ | |
1da177e4 | 1166 | ) { |
1da177e4 LT |
1167 | ret = -EIO; |
1168 | goto out_put_floppy; | |
1169 | } | |
1170 | ||
1171 | if (floppy->wp && (filp->f_mode & 2)) { | |
1da177e4 LT |
1172 | ret = -EROFS; |
1173 | goto out_put_floppy; | |
1174 | } | |
ea68d270 | 1175 | drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED; |
1da177e4 | 1176 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
ea68d270 | 1177 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1178 | idefloppy_create_prevent_cmd(&pc, 1); |
1179 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1180 | } | |
1181 | check_disk_change(inode->i_bdev); | |
ea68d270 | 1182 | } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
1183 | ret = -EBUSY; |
1184 | goto out_put_floppy; | |
1185 | } | |
1186 | return 0; | |
1187 | ||
1188 | out_put_floppy: | |
c94964a4 | 1189 | floppy->openers--; |
1da177e4 LT |
1190 | ide_floppy_put(floppy); |
1191 | return ret; | |
1192 | } | |
1193 | ||
1194 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
1195 | { | |
1196 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1197 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1198 | ide_drive_t *drive = floppy->drive; | |
8e555123 | 1199 | struct ide_atapi_pc pc; |
bcc77d9c BP |
1200 | |
1201 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 1202 | |
c94964a4 | 1203 | if (floppy->openers == 1) { |
1da177e4 | 1204 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
ea68d270 | 1205 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1206 | idefloppy_create_prevent_cmd(&pc, 0); |
1207 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1208 | } | |
1209 | ||
ea68d270 | 1210 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 1211 | } |
c94964a4 BZ |
1212 | |
1213 | floppy->openers--; | |
1da177e4 LT |
1214 | |
1215 | ide_floppy_put(floppy); | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
a885c8c4 CH |
1220 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1221 | { | |
1222 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1223 | ide_drive_t *drive = floppy->drive; | |
1224 | ||
1225 | geo->heads = drive->bios_head; | |
1226 | geo->sectors = drive->bios_sect; | |
1227 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1228 | return 0; | |
1229 | } | |
1230 | ||
ea68d270 BP |
1231 | static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc, |
1232 | unsigned long arg, unsigned int cmd) | |
20bf7bda | 1233 | { |
ea68d270 BP |
1234 | idefloppy_floppy_t *floppy = drive->driver_data; |
1235 | ||
20bf7bda BP |
1236 | if (floppy->openers > 1) |
1237 | return -EBUSY; | |
1238 | ||
1239 | /* The IOMEGA Clik! Drive doesn't support this command - | |
1240 | * no room for an eject mechanism */ | |
ea68d270 | 1241 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) { |
20bf7bda BP |
1242 | int prevent = arg ? 1 : 0; |
1243 | ||
1244 | if (cmd == CDROMEJECT) | |
1245 | prevent = 0; | |
1246 | ||
1247 | idefloppy_create_prevent_cmd(pc, prevent); | |
1248 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1249 | } | |
1250 | ||
1251 | if (cmd == CDROMEJECT) { | |
1252 | idefloppy_create_start_stop_cmd(pc, 2); | |
1253 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1254 | } | |
1255 | ||
1256 | return 0; | |
1257 | } | |
1258 | ||
1259 | static int ide_floppy_format_unit(idefloppy_floppy_t *floppy, | |
1260 | int __user *arg) | |
1261 | { | |
8e555123 | 1262 | struct ide_atapi_pc pc; |
ea68d270 BP |
1263 | ide_drive_t *drive = floppy->drive; |
1264 | int blocks, length, flags, err = 0; | |
20bf7bda BP |
1265 | |
1266 | if (floppy->openers > 1) { | |
1267 | /* Don't format if someone is using the disk */ | |
ea68d270 | 1268 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1269 | return -EBUSY; |
1270 | } | |
1271 | ||
ea68d270 | 1272 | drive->atapi_flags |= IDE_AFLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1273 | |
1274 | /* | |
1275 | * Send ATAPI_FORMAT_UNIT to the drive. | |
1276 | * | |
1277 | * Userland gives us the following structure: | |
1278 | * | |
1279 | * struct idefloppy_format_command { | |
1280 | * int nblocks; | |
1281 | * int blocksize; | |
1282 | * int flags; | |
1283 | * } ; | |
1284 | * | |
1285 | * flags is a bitmask, currently, the only defined flag is: | |
1286 | * | |
1287 | * 0x01 - verify media after format. | |
1288 | */ | |
1289 | if (get_user(blocks, arg) || | |
1290 | get_user(length, arg+1) || | |
1291 | get_user(flags, arg+2)) { | |
1292 | err = -EFAULT; | |
1293 | goto out; | |
1294 | } | |
1295 | ||
ea68d270 | 1296 | (void) idefloppy_get_sfrp_bit(drive); |
20bf7bda BP |
1297 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); |
1298 | ||
ea68d270 | 1299 | if (idefloppy_queue_pc_tail(drive, &pc)) |
20bf7bda BP |
1300 | err = -EIO; |
1301 | ||
1302 | out: | |
1303 | if (err) | |
ea68d270 | 1304 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1305 | return err; |
1306 | } | |
1307 | ||
1308 | ||
1da177e4 LT |
1309 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
1310 | unsigned int cmd, unsigned long arg) | |
1311 | { | |
1312 | struct block_device *bdev = inode->i_bdev; | |
1313 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1314 | ide_drive_t *drive = floppy->drive; | |
8e555123 | 1315 | struct ide_atapi_pc pc; |
1da177e4 | 1316 | void __user *argp = (void __user *)arg; |
07203f64 | 1317 | int err; |
1da177e4 LT |
1318 | |
1319 | switch (cmd) { | |
1320 | case CDROMEJECT: | |
1da177e4 LT |
1321 | /* fall through */ |
1322 | case CDROM_LOCKDOOR: | |
ea68d270 | 1323 | return ide_floppy_lockdoor(drive, &pc, arg, cmd); |
1da177e4 LT |
1324 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: |
1325 | return 0; | |
1326 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
194ec0c0 | 1327 | return ide_floppy_get_format_capacities(drive, argp); |
1da177e4 | 1328 | case IDEFLOPPY_IOCTL_FORMAT_START: |
1da177e4 LT |
1329 | if (!(file->f_mode & 2)) |
1330 | return -EPERM; | |
1331 | ||
20bf7bda | 1332 | return ide_floppy_format_unit(floppy, (int __user *)arg); |
1da177e4 LT |
1333 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: |
1334 | return idefloppy_get_format_progress(drive, argp); | |
1335 | } | |
89636af2 BZ |
1336 | |
1337 | /* | |
1338 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
1339 | * and CDROM_SEND_PACKET (legacy) ioctls | |
1340 | */ | |
1341 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
1342 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
1343 | bdev->bd_disk, cmd, argp); | |
1344 | else | |
1345 | err = -ENOTTY; | |
1346 | ||
1347 | if (err == -ENOTTY) | |
1348 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1349 | ||
1350 | return err; | |
1da177e4 LT |
1351 | } |
1352 | ||
1353 | static int idefloppy_media_changed(struct gendisk *disk) | |
1354 | { | |
1355 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1356 | ide_drive_t *drive = floppy->drive; | |
6e5fa7b8 | 1357 | int ret; |
1da177e4 LT |
1358 | |
1359 | /* do not scan partitions twice if this is a removable device */ | |
1360 | if (drive->attach) { | |
1361 | drive->attach = 0; | |
1362 | return 0; | |
1363 | } | |
ea68d270 BP |
1364 | ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED); |
1365 | drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED; | |
6e5fa7b8 | 1366 | return ret; |
1da177e4 LT |
1367 | } |
1368 | ||
1369 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
1370 | { | |
1371 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1372 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
1373 | return 0; | |
1374 | } | |
1375 | ||
1376 | static struct block_device_operations idefloppy_ops = { | |
52d3ccf7 PC |
1377 | .owner = THIS_MODULE, |
1378 | .open = idefloppy_open, | |
1379 | .release = idefloppy_release, | |
1380 | .ioctl = idefloppy_ioctl, | |
1381 | .getgeo = idefloppy_getgeo, | |
1382 | .media_changed = idefloppy_media_changed, | |
1383 | .revalidate_disk = idefloppy_revalidate_disk | |
1da177e4 LT |
1384 | }; |
1385 | ||
4031bbe4 | 1386 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
1387 | { |
1388 | idefloppy_floppy_t *floppy; | |
1389 | struct gendisk *g; | |
1390 | ||
1391 | if (!strstr("ide-floppy", drive->driver_req)) | |
1392 | goto failed; | |
1393 | if (!drive->present) | |
1394 | goto failed; | |
1395 | if (drive->media != ide_floppy) | |
1396 | goto failed; | |
0571c7a4 BP |
1397 | if (!idefloppy_identify_device(drive, drive->id)) { |
1398 | printk(KERN_ERR "ide-floppy: %s: not supported by this version" | |
1399 | " of ide-floppy\n", drive->name); | |
1da177e4 LT |
1400 | goto failed; |
1401 | } | |
0571c7a4 BP |
1402 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
1403 | if (!floppy) { | |
1404 | printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" | |
1405 | " structure\n", drive->name); | |
1da177e4 LT |
1406 | goto failed; |
1407 | } | |
1408 | ||
1409 | g = alloc_disk(1 << PARTN_BITS); | |
1410 | if (!g) | |
1411 | goto out_free_floppy; | |
1412 | ||
1413 | ide_init_disk(g, drive); | |
1414 | ||
7662d046 | 1415 | ide_proc_register_driver(drive, &idefloppy_driver); |
1da177e4 | 1416 | |
1da177e4 LT |
1417 | kref_init(&floppy->kref); |
1418 | ||
1419 | floppy->drive = drive; | |
1420 | floppy->driver = &idefloppy_driver; | |
1421 | floppy->disk = g; | |
1422 | ||
1423 | g->private_data = &floppy->driver; | |
1424 | ||
1425 | drive->driver_data = floppy; | |
1426 | ||
0571c7a4 | 1427 | idefloppy_setup(drive, floppy); |
8604affd | 1428 | |
1da177e4 LT |
1429 | g->minors = 1 << PARTN_BITS; |
1430 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
1431 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
1432 | g->fops = &idefloppy_ops; | |
1433 | drive->attach = 1; | |
1434 | add_disk(g); | |
1435 | return 0; | |
1436 | ||
1da177e4 LT |
1437 | out_free_floppy: |
1438 | kfree(floppy); | |
1439 | failed: | |
8604affd | 1440 | return -ENODEV; |
1da177e4 LT |
1441 | } |
1442 | ||
0571c7a4 | 1443 | static void __exit idefloppy_exit(void) |
1da177e4 | 1444 | { |
8604affd | 1445 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1446 | } |
1447 | ||
17514e8a | 1448 | static int __init idefloppy_init(void) |
1da177e4 LT |
1449 | { |
1450 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 1451 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1452 | } |
1453 | ||
263756ec | 1454 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
1455 | module_init(idefloppy_init); |
1456 | module_exit(idefloppy_exit); | |
1457 | MODULE_LICENSE("GPL"); | |
0571c7a4 BP |
1458 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
1459 |