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Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
d3f20848 BP |
2 | * IDE ATAPI floppy driver. |
3 | * | |
59bca8cc BZ |
4 | * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> |
5 | * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> | |
6 | * Copyright (C) 2005 Bartlomiej Zolnierkiewicz | |
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 | ||
51509eec BZ |
18 | #define DRV_NAME "ide-floppy" |
19 | ||
fc6c5bc7 | 20 | #define IDEFLOPPY_VERSION "1.00" |
1da177e4 | 21 | |
1da177e4 LT |
22 | #include <linux/module.h> |
23 | #include <linux/types.h> | |
24 | #include <linux/string.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/timer.h> | |
28 | #include <linux/mm.h> | |
29 | #include <linux/interrupt.h> | |
30 | #include <linux/major.h> | |
31 | #include <linux/errno.h> | |
32 | #include <linux/genhd.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/cdrom.h> | |
35 | #include <linux/ide.h> | |
3ceca727 | 36 | #include <linux/hdreg.h> |
1da177e4 | 37 | #include <linux/bitops.h> |
cf8b8975 | 38 | #include <linux/mutex.h> |
b98b3409 | 39 | #include <linux/scatterlist.h> |
1da177e4 | 40 | |
89636af2 BZ |
41 | #include <scsi/scsi_ioctl.h> |
42 | ||
1da177e4 | 43 | #include <asm/byteorder.h> |
7e8b163b BP |
44 | #include <linux/irq.h> |
45 | #include <linux/uaccess.h> | |
46 | #include <linux/io.h> | |
1da177e4 LT |
47 | #include <asm/unaligned.h> |
48 | ||
0127854d BZ |
49 | #include "ide-floppy.h" |
50 | ||
f373bd82 | 51 | /* define to see debug info */ |
1da177e4 | 52 | #define IDEFLOPPY_DEBUG_LOG 0 |
1da177e4 LT |
53 | |
54 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ | |
0571c7a4 | 55 | #define IDEFLOPPY_DEBUG(fmt, args...) |
1da177e4 LT |
56 | |
57 | #if IDEFLOPPY_DEBUG_LOG | |
bcc77d9c BP |
58 | #define debug_log(fmt, args...) \ |
59 | printk(KERN_INFO "ide-floppy: " fmt, ## args) | |
1da177e4 | 60 | #else |
0571c7a4 | 61 | #define debug_log(fmt, args...) do {} while (0) |
1da177e4 LT |
62 | #endif |
63 | ||
1da177e4 | 64 | /* |
0571c7a4 BP |
65 | * After each failed packet command we issue a request sense command and retry |
66 | * the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
1da177e4 LT |
67 | */ |
68 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
69 | ||
194ec0c0 | 70 | /* format capacities descriptor codes */ |
1da177e4 LT |
71 | #define CAPACITY_INVALID 0x00 |
72 | #define CAPACITY_UNFORMATTED 0x01 | |
73 | #define CAPACITY_CURRENT 0x02 | |
74 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
75 | ||
baf08f0b BZ |
76 | /* |
77 | * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit | |
78 | * was apparently being deasserted before the unit was ready to receive data. | |
79 | */ | |
80 | #define IDEFLOPPY_PC_DELAY (HZ/20) /* default delay for ZIP 100 (50ms) */ | |
1da177e4 | 81 | |
0571c7a4 | 82 | /* Error code returned in rq->errors to the higher part of the driver. */ |
1da177e4 LT |
83 | #define IDEFLOPPY_ERROR_GENERAL 101 |
84 | ||
cf8b8975 | 85 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 | 86 | |
08da591e BZ |
87 | static void idefloppy_cleanup_obj(struct kref *); |
88 | ||
1da177e4 LT |
89 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) |
90 | { | |
91 | struct ide_floppy_obj *floppy = NULL; | |
92 | ||
cf8b8975 | 93 | mutex_lock(&idefloppy_ref_mutex); |
5aeddf90 | 94 | floppy = ide_drv_g(disk, ide_floppy_obj); |
08da591e | 95 | if (floppy) { |
d3e33ff5 | 96 | if (ide_device_get(floppy->drive)) |
08da591e | 97 | floppy = NULL; |
d3e33ff5 BZ |
98 | else |
99 | kref_get(&floppy->kref); | |
08da591e | 100 | } |
cf8b8975 | 101 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
102 | return floppy; |
103 | } | |
104 | ||
1da177e4 LT |
105 | static void ide_floppy_put(struct ide_floppy_obj *floppy) |
106 | { | |
d3e33ff5 BZ |
107 | ide_drive_t *drive = floppy->drive; |
108 | ||
cf8b8975 | 109 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 110 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
d3e33ff5 | 111 | ide_device_put(drive); |
cf8b8975 | 112 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
113 | } |
114 | ||
1da177e4 | 115 | /* |
0571c7a4 BP |
116 | * Used to finish servicing a request. For read/write requests, we will call |
117 | * ide_end_request to pass to the next buffer. | |
1da177e4 | 118 | */ |
c2b2b293 | 119 | static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
1da177e4 LT |
120 | { |
121 | idefloppy_floppy_t *floppy = drive->driver_data; | |
122 | struct request *rq = HWGROUP(drive)->rq; | |
123 | int error; | |
124 | ||
bcc77d9c | 125 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
126 | |
127 | switch (uptodate) { | |
0571c7a4 BP |
128 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
129 | case 1: error = 0; break; | |
130 | default: error = uptodate; | |
1da177e4 LT |
131 | } |
132 | if (error) | |
133 | floppy->failed_pc = NULL; | |
134 | /* Why does this happen? */ | |
135 | if (!rq) | |
136 | return 0; | |
4aff5e23 | 137 | if (!blk_special_request(rq)) { |
1da177e4 LT |
138 | /* our real local end request function */ |
139 | ide_end_request(drive, uptodate, nsecs); | |
140 | return 0; | |
141 | } | |
142 | rq->errors = error; | |
143 | /* fixme: need to move this local also */ | |
144 | ide_end_drive_cmd(drive, 0, 0); | |
145 | return 0; | |
146 | } | |
147 | ||
8e555123 BP |
148 | static void idefloppy_update_buffers(ide_drive_t *drive, |
149 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
150 | { |
151 | struct request *rq = pc->rq; | |
152 | struct bio *bio = rq->bio; | |
153 | ||
154 | while ((bio = rq->bio) != NULL) | |
c2b2b293 | 155 | idefloppy_end_request(drive, 1, 0); |
1da177e4 LT |
156 | } |
157 | ||
b14c7212 | 158 | static void ide_floppy_callback(ide_drive_t *drive, int dsc) |
1da177e4 LT |
159 | { |
160 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2b9efba4 | 161 | struct ide_atapi_pc *pc = drive->pc; |
81f49382 | 162 | int uptodate = pc->error ? 0 : 1; |
1da177e4 | 163 | |
bcc77d9c BP |
164 | debug_log("Reached %s\n", __func__); |
165 | ||
dd2e9a03 BZ |
166 | if (floppy->failed_pc == pc) |
167 | floppy->failed_pc = NULL; | |
168 | ||
81f49382 BP |
169 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
170 | (pc->rq && blk_pc_request(pc->rq))) | |
171 | uptodate = 1; /* FIXME */ | |
172 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
2b9efba4 | 173 | u8 *buf = pc->buf; |
a6ff2d3b | 174 | |
81f49382 BP |
175 | if (!pc->error) { |
176 | floppy->sense_key = buf[2] & 0x0F; | |
177 | floppy->asc = buf[12]; | |
178 | floppy->ascq = buf[13]; | |
179 | floppy->progress_indication = buf[15] & 0x80 ? | |
180 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 181 | |
81f49382 BP |
182 | if (floppy->failed_pc) |
183 | debug_log("pc = %x, ", floppy->failed_pc->c[0]); | |
bcc77d9c | 184 | |
81f49382 BP |
185 | debug_log("sense key = %x, asc = %x, ascq = %x\n", |
186 | floppy->sense_key, floppy->asc, floppy->ascq); | |
187 | } else | |
188 | printk(KERN_ERR "Error in REQUEST SENSE itself - " | |
189 | "Aborting request!\n"); | |
190 | } | |
1da177e4 | 191 | |
81f49382 | 192 | idefloppy_end_request(drive, uptodate, 0); |
1da177e4 LT |
193 | } |
194 | ||
d652c138 | 195 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
8e555123 | 196 | struct ide_atapi_pc *pc) |
1da177e4 | 197 | { |
d652c138 | 198 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
199 | if (floppy->sense_key == 0x02 && |
200 | floppy->asc == 0x3a && | |
201 | floppy->ascq == 0x00) | |
d652c138 BP |
202 | return; |
203 | ||
204 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
205 | "asc = %2x, ascq = %2x\n", | |
206 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
207 | floppy->asc, floppy->ascq); | |
208 | ||
1da177e4 LT |
209 | } |
210 | ||
0571c7a4 | 211 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 212 | struct ide_atapi_pc *pc) |
1da177e4 LT |
213 | { |
214 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1da177e4 | 215 | |
1da177e4 | 216 | if (floppy->failed_pc == NULL && |
30d67099 | 217 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 | 218 | floppy->failed_pc = pc; |
2b9efba4 | 219 | |
1da177e4 | 220 | /* Set the current packet command */ |
2b9efba4 | 221 | drive->pc = pc; |
1da177e4 | 222 | |
757ced89 | 223 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 224 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
225 | ide_floppy_report_error(floppy, pc); |
226 | /* Giving up */ | |
227 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
228 | ||
1da177e4 | 229 | floppy->failed_pc = NULL; |
b14c7212 | 230 | drive->pc_callback(drive, 0); |
1da177e4 LT |
231 | return ide_stopped; |
232 | } | |
233 | ||
bcc77d9c | 234 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
235 | |
236 | pc->retries++; | |
1da177e4 | 237 | |
baf08f0b | 238 | return ide_issue_pc(drive, WAIT_FLOPPY_CMD, NULL); |
1da177e4 LT |
239 | } |
240 | ||
0127854d | 241 | void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 242 | { |
7bf7420a | 243 | ide_init_pc(pc); |
30d67099 | 244 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
245 | pc->c[7] = 255; |
246 | pc->c[8] = 255; | |
8e555123 | 247 | pc->req_xfer = 255; |
1da177e4 LT |
248 | } |
249 | ||
0571c7a4 | 250 | /* A mode sense command is used to "sense" floppy parameters. */ |
0127854d | 251 | void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
1da177e4 | 252 | { |
24a5d703 | 253 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 254 | |
7bf7420a | 255 | ide_init_pc(pc); |
30d67099 | 256 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 | 257 | pc->c[1] = 0; |
4de4b9e1 | 258 | pc->c[2] = page_code; |
1da177e4 LT |
259 | |
260 | switch (page_code) { | |
0571c7a4 BP |
261 | case IDEFLOPPY_CAPABILITIES_PAGE: |
262 | length += 12; | |
263 | break; | |
264 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
265 | length += 32; | |
266 | break; | |
267 | default: | |
268 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1da177e4 LT |
269 | "in create_mode_sense_cmd\n"); |
270 | } | |
8f622430 | 271 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 272 | pc->req_xfer = length; |
1da177e4 LT |
273 | } |
274 | ||
ae7e8ddc | 275 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 276 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 277 | unsigned long sector) |
1da177e4 LT |
278 | { |
279 | int block = sector / floppy->bs_factor; | |
280 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
281 | int cmd = rq_data_dir(rq); | |
282 | ||
ae7e8ddc | 283 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
284 | block, blocks); |
285 | ||
7bf7420a | 286 | ide_init_pc(pc); |
ae7e8ddc BP |
287 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
288 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 289 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 290 | |
20cd93be BP |
291 | memcpy(rq->cmd, pc->c, 12); |
292 | ||
1da177e4 | 293 | pc->rq = rq; |
b98b3409 | 294 | pc->b_count = 0; |
4aff5e23 | 295 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 296 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
297 | pc->buf = NULL; |
298 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
5e331095 | 299 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
300 | } |
301 | ||
0571c7a4 | 302 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 303 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 304 | { |
7bf7420a | 305 | ide_init_pc(pc); |
1da177e4 | 306 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf | 307 | pc->rq = rq; |
b98b3409 | 308 | pc->b_count = 0; |
3d6392cf | 309 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
6e5fa7b8 | 310 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 311 | pc->buf = rq->data; |
3d6392cf | 312 | if (rq->bio) |
5e331095 | 313 | pc->flags |= PC_FLAG_DMA_OK; |
3d6392cf JA |
314 | /* |
315 | * possibly problematic, doesn't look like ide-floppy correctly | |
316 | * handled scattered requests if dma fails... | |
317 | */ | |
8e555123 | 318 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
319 | } |
320 | ||
0571c7a4 BP |
321 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
322 | struct request *rq, sector_t block_s) | |
1da177e4 LT |
323 | { |
324 | idefloppy_floppy_t *floppy = drive->driver_data; | |
b98b3409 | 325 | ide_hwif_t *hwif = drive->hwif; |
8e555123 | 326 | struct ide_atapi_pc *pc; |
1da177e4 LT |
327 | unsigned long block = (unsigned long)block_s; |
328 | ||
b98b3409 BP |
329 | debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n", |
330 | __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?", | |
331 | rq->cmd[0], rq->cmd_type, rq->errors); | |
332 | ||
333 | debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n", | |
334 | __func__, (long)rq->sector, rq->nr_sectors, | |
335 | rq->current_nr_sectors); | |
1da177e4 LT |
336 | |
337 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
338 | if (floppy->failed_pc) |
339 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
340 | else |
341 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
342 | drive->name); | |
c2b2b293 | 343 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
344 | return ide_stopped; |
345 | } | |
4aff5e23 | 346 | if (blk_fs_request(rq)) { |
1da177e4 LT |
347 | if (((long)rq->sector % floppy->bs_factor) || |
348 | (rq->nr_sectors % floppy->bs_factor)) { | |
0571c7a4 BP |
349 | printk(KERN_ERR "%s: unsupported r/w request size\n", |
350 | drive->name); | |
c2b2b293 | 351 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
352 | return ide_stopped; |
353 | } | |
2e8a6f89 | 354 | pc = &floppy->queued_pc; |
1da177e4 | 355 | idefloppy_create_rw_cmd(floppy, pc, rq, block); |
4aff5e23 | 356 | } else if (blk_special_request(rq)) { |
8e555123 | 357 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 358 | } else if (blk_pc_request(rq)) { |
2e8a6f89 | 359 | pc = &floppy->queued_pc; |
3d6392cf | 360 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
361 | } else { |
362 | blk_dump_rq_flags(rq, | |
363 | "ide-floppy: unsupported command in queue"); | |
c2b2b293 | 364 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
365 | return ide_stopped; |
366 | } | |
367 | ||
b98b3409 BP |
368 | ide_init_sg_cmd(drive, rq); |
369 | ide_map_sg(drive, rq); | |
370 | ||
371 | pc->sg = hwif->sg_table; | |
372 | pc->sg_cnt = hwif->sg_nents; | |
373 | ||
1da177e4 | 374 | pc->rq = rq; |
5d41893c | 375 | |
1da177e4 LT |
376 | return idefloppy_issue_pc(drive, pc); |
377 | } | |
378 | ||
1da177e4 | 379 | /* |
8e81bbba BP |
380 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
381 | * parameters and use the LBA parameters instead. | |
1da177e4 | 382 | */ |
8e81bbba | 383 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
384 | { |
385 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2ac07d92 | 386 | struct gendisk *disk = floppy->disk; |
8e555123 | 387 | struct ide_atapi_pc pc; |
8e81bbba | 388 | u8 *page; |
1da177e4 | 389 | int capacity, lba_capacity; |
8e81bbba BP |
390 | u16 transfer_rate, sector_size, cyls, rpm; |
391 | u8 heads, sectors; | |
1da177e4 | 392 | |
0127854d | 393 | ide_floppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
8e81bbba | 394 | |
2ac07d92 | 395 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
8e81bbba BP |
396 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" |
397 | " parameters\n"); | |
1da177e4 LT |
398 | return 1; |
399 | } | |
49cac39e BZ |
400 | |
401 | if (pc.buf[3] & 0x80) | |
402 | drive->atapi_flags |= IDE_AFLAG_WP; | |
403 | else | |
404 | drive->atapi_flags &= ~IDE_AFLAG_WP; | |
405 | ||
406 | set_disk_ro(disk, !!(drive->atapi_flags & IDE_AFLAG_WP)); | |
407 | ||
8e555123 | 408 | page = &pc.buf[8]; |
8e81bbba | 409 | |
85ae98a3 HH |
410 | transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]); |
411 | sector_size = be16_to_cpup((__be16 *)&pc.buf[8 + 6]); | |
412 | cyls = be16_to_cpup((__be16 *)&pc.buf[8 + 8]); | |
413 | rpm = be16_to_cpup((__be16 *)&pc.buf[8 + 28]); | |
8e555123 BP |
414 | heads = pc.buf[8 + 4]; |
415 | sectors = pc.buf[8 + 5]; | |
8e81bbba BP |
416 | |
417 | capacity = cyls * heads * sectors * sector_size; | |
418 | ||
419 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
420 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
421 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
422 | drive->name, capacity / 1024, cyls, heads, |
423 | sectors, transfer_rate / 8, sector_size, rpm); | |
424 | ||
425 | memcpy(&floppy->flexible_disk_page, page, 32); | |
426 | drive->bios_cyl = cyls; | |
427 | drive->bios_head = heads; | |
428 | drive->bios_sect = sectors; | |
1da177e4 | 429 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 430 | |
1da177e4 LT |
431 | if (capacity < lba_capacity) { |
432 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
433 | "bytes, but the drive only handles %d\n", | |
434 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
435 | floppy->blocks = floppy->block_size ? |
436 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
437 | } |
438 | return 0; | |
439 | } | |
440 | ||
1da177e4 | 441 | /* |
194ec0c0 BP |
442 | * Determine if a media is present in the floppy drive, and if so, its LBA |
443 | * capacity. | |
1da177e4 | 444 | */ |
194ec0c0 | 445 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
446 | { |
447 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2ac07d92 | 448 | struct gendisk *disk = floppy->disk; |
8e555123 | 449 | struct ide_atapi_pc pc; |
194ec0c0 BP |
450 | u8 *cap_desc; |
451 | u8 header_len, desc_cnt; | |
452 | int i, rc = 1, blocks, length; | |
453 | ||
1da177e4 LT |
454 | drive->bios_cyl = 0; |
455 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
456 | floppy->blocks = 0; |
457 | floppy->bs_factor = 1; | |
1da177e4 LT |
458 | set_capacity(floppy->disk, 0); |
459 | ||
0127854d | 460 | ide_floppy_create_read_capacity_cmd(&pc); |
2ac07d92 | 461 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
1da177e4 LT |
462 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); |
463 | return 1; | |
464 | } | |
8e555123 BP |
465 | header_len = pc.buf[3]; |
466 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
467 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
468 | ||
469 | for (i = 0; i < desc_cnt; i++) { | |
470 | unsigned int desc_start = 4 + i*8; | |
471 | ||
85ae98a3 HH |
472 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
473 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 BP |
474 | |
475 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
476 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 477 | |
194ec0c0 BP |
478 | if (i) |
479 | continue; | |
480 | /* | |
481 | * the code below is valid only for the 1st descriptor, ie i=0 | |
482 | */ | |
1da177e4 | 483 | |
8e555123 | 484 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
485 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
486 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 487 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 488 | /* |
1da177e4 LT |
489 | * If it is not a clik drive, break out |
490 | * (maintains previous driver behaviour) | |
491 | */ | |
492 | break; | |
493 | case CAPACITY_CURRENT: | |
494 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 495 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
496 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
497 | "sector size\n", drive->name, | |
498 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
499 | memcpy(&floppy->cap_desc, cap_desc, 8); |
500 | ||
1da177e4 LT |
501 | if (!length || length % 512) { |
502 | printk(KERN_NOTICE "%s: %d bytes block size " | |
503 | "not supported\n", drive->name, length); | |
504 | } else { | |
194ec0c0 BP |
505 | floppy->blocks = blocks; |
506 | floppy->block_size = length; | |
507 | floppy->bs_factor = length / 512; | |
508 | if (floppy->bs_factor != 1) | |
509 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
510 | "512 bytes block size not " |
511 | "fully supported\n", | |
512 | drive->name); | |
194ec0c0 | 513 | rc = 0; |
1da177e4 LT |
514 | } |
515 | break; | |
516 | case CAPACITY_NO_CARTRIDGE: | |
517 | /* | |
518 | * This is a KERN_ERR so it appears on screen | |
519 | * for the user to see | |
520 | */ | |
521 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
522 | break; | |
523 | case CAPACITY_INVALID: | |
524 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
525 | "in drive\n", drive->name); | |
526 | break; | |
527 | } | |
194ec0c0 | 528 | debug_log("Descriptor 0 Code: %d\n", |
8e555123 | 529 | pc.buf[desc_start + 4] & 0x03); |
1da177e4 LT |
530 | } |
531 | ||
532 | /* Clik! disk does not support get_flexible_disk_page */ | |
ea68d270 | 533 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
8e81bbba | 534 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 | 535 | |
2ac07d92 BZ |
536 | set_capacity(disk, floppy->blocks * floppy->bs_factor); |
537 | ||
1da177e4 LT |
538 | return rc; |
539 | } | |
540 | ||
0571c7a4 | 541 | static sector_t idefloppy_capacity(ide_drive_t *drive) |
1da177e4 LT |
542 | { |
543 | idefloppy_floppy_t *floppy = drive->driver_data; | |
544 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
545 | ||
546 | return capacity; | |
547 | } | |
548 | ||
7662d046 | 549 | #ifdef CONFIG_IDE_PROC_FS |
92f1f8fd EO |
550 | ide_devset_rw_field(bios_cyl, bios_cyl); |
551 | ide_devset_rw_field(bios_head, bios_head); | |
552 | ide_devset_rw_field(bios_sect, bios_sect); | |
baf08f0b | 553 | ide_devset_rw_field(ticks, pc_delay); |
8185d5aa | 554 | |
92f1f8fd EO |
555 | static const struct ide_proc_devset idefloppy_settings[] = { |
556 | IDE_PROC_DEVSET(bios_cyl, 0, 1023), | |
557 | IDE_PROC_DEVSET(bios_head, 0, 255), | |
558 | IDE_PROC_DEVSET(bios_sect, 0, 63), | |
559 | IDE_PROC_DEVSET(ticks, 0, 255), | |
560 | { 0 }, | |
8185d5aa | 561 | }; |
7662d046 | 562 | #endif |
1da177e4 | 563 | |
0571c7a4 | 564 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
1da177e4 | 565 | { |
4dde4492 | 566 | u16 *id = drive->id; |
3ad6776c | 567 | u8 gcw[2]; |
1da177e4 | 568 | |
4dde4492 | 569 | *((u16 *)&gcw) = id[ATA_ID_CONFIG]; |
2e8a6f89 | 570 | |
85e39035 BZ |
571 | drive->pc_callback = ide_floppy_callback; |
572 | drive->pc_update_buffers = idefloppy_update_buffers; | |
573 | drive->pc_io_buffers = ide_io_buffers; | |
3ad6776c BP |
574 | |
575 | if (((gcw[0] & 0x60) >> 5) == 1) | |
ea68d270 | 576 | drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT; |
1da177e4 | 577 | /* |
0571c7a4 BP |
578 | * We used to check revisions here. At this point however I'm giving up. |
579 | * Just assume they are all broken, its easier. | |
1da177e4 | 580 | * |
0571c7a4 BP |
581 | * The actual reason for the workarounds was likely a driver bug after |
582 | * all rather than a firmware bug, and the workaround below used to hide | |
583 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
584 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 585 | */ |
4dde4492 | 586 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
ea68d270 | 587 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 | 588 | /* This value will be visible in the /proc/ide/hdx/settings */ |
baf08f0b | 589 | drive->pc_delay = IDEFLOPPY_PC_DELAY; |
1da177e4 LT |
590 | blk_queue_max_sectors(drive->queue, 64); |
591 | } | |
592 | ||
593 | /* | |
0571c7a4 BP |
594 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
595 | * nasty clicking noises without it, so please don't remove this. | |
596 | */ | |
4dde4492 | 597 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
1da177e4 | 598 | blk_queue_max_sectors(drive->queue, 64); |
ea68d270 | 599 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
0578042d BZ |
600 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
601 | drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK; | |
1da177e4 LT |
602 | } |
603 | ||
194ec0c0 | 604 | (void) ide_floppy_get_capacity(drive); |
1e874f44 BZ |
605 | |
606 | ide_proc_register_driver(drive, floppy->driver); | |
1da177e4 LT |
607 | } |
608 | ||
4031bbe4 | 609 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
610 | { |
611 | idefloppy_floppy_t *floppy = drive->driver_data; | |
612 | struct gendisk *g = floppy->disk; | |
613 | ||
7662d046 | 614 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
615 | |
616 | del_gendisk(g); | |
617 | ||
618 | ide_floppy_put(floppy); | |
1da177e4 LT |
619 | } |
620 | ||
9a24b63d | 621 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 | 622 | { |
5aeddf90 | 623 | struct ide_floppy_obj *floppy = to_ide_drv(kref, ide_floppy_obj); |
1da177e4 LT |
624 | ide_drive_t *drive = floppy->drive; |
625 | struct gendisk *g = floppy->disk; | |
626 | ||
627 | drive->driver_data = NULL; | |
628 | g->private_data = NULL; | |
629 | put_disk(g); | |
630 | kfree(floppy); | |
631 | } | |
632 | ||
ecfd80e4 | 633 | #ifdef CONFIG_IDE_PROC_FS |
0571c7a4 BP |
634 | static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, |
635 | int count, int *eof, void *data) | |
1da177e4 LT |
636 | { |
637 | ide_drive_t*drive = (ide_drive_t *)data; | |
638 | int len; | |
639 | ||
0571c7a4 BP |
640 | len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); |
641 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
642 | } |
643 | ||
644 | static ide_proc_entry_t idefloppy_proc[] = { | |
0571c7a4 BP |
645 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
646 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1da177e4 LT |
647 | { NULL, 0, NULL, NULL } |
648 | }; | |
ecfd80e4 | 649 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 650 | |
4031bbe4 | 651 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 652 | |
1da177e4 | 653 | static ide_driver_t idefloppy_driver = { |
8604affd | 654 | .gen_driver = { |
4ef3b8f4 | 655 | .owner = THIS_MODULE, |
8604affd BZ |
656 | .name = "ide-floppy", |
657 | .bus = &ide_bus_type, | |
8604affd | 658 | }, |
4031bbe4 RK |
659 | .probe = ide_floppy_probe, |
660 | .remove = ide_floppy_remove, | |
1da177e4 LT |
661 | .version = IDEFLOPPY_VERSION, |
662 | .media = ide_floppy, | |
1da177e4 | 663 | .do_request = idefloppy_do_request, |
c2b2b293 | 664 | .end_request = idefloppy_end_request, |
1da177e4 | 665 | .error = __ide_error, |
7662d046 | 666 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 667 | .proc = idefloppy_proc, |
8185d5aa | 668 | .settings = idefloppy_settings, |
7662d046 | 669 | #endif |
1da177e4 LT |
670 | }; |
671 | ||
672 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
673 | { | |
674 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
675 | struct ide_floppy_obj *floppy; | |
676 | ide_drive_t *drive; | |
1da177e4 LT |
677 | int ret = 0; |
678 | ||
bcc77d9c | 679 | debug_log("Reached %s\n", __func__); |
1da177e4 | 680 | |
0571c7a4 BP |
681 | floppy = ide_floppy_get(disk); |
682 | if (!floppy) | |
1da177e4 LT |
683 | return -ENXIO; |
684 | ||
685 | drive = floppy->drive; | |
686 | ||
c94964a4 | 687 | floppy->openers++; |
1da177e4 | 688 | |
c94964a4 | 689 | if (floppy->openers == 1) { |
ea68d270 | 690 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
691 | /* Just in case */ |
692 | ||
de699ad5 | 693 | if (ide_do_test_unit_ready(drive, disk)) |
0c8a6c7a | 694 | ide_do_start_stop(drive, disk, 1); |
1da177e4 | 695 | |
194ec0c0 | 696 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
697 | && (filp->f_flags & O_NDELAY) == 0 |
698 | /* | |
0571c7a4 BP |
699 | * Allow O_NDELAY to open a drive without a disk, or with an |
700 | * unreadable disk, so that we can get the format capacity | |
701 | * of the drive or begin the format - Sam | |
702 | */ | |
1da177e4 | 703 | ) { |
1da177e4 LT |
704 | ret = -EIO; |
705 | goto out_put_floppy; | |
706 | } | |
707 | ||
49cac39e | 708 | if ((drive->atapi_flags & IDE_AFLAG_WP) && (filp->f_mode & 2)) { |
1da177e4 LT |
709 | ret = -EROFS; |
710 | goto out_put_floppy; | |
711 | } | |
e996fc8a | 712 | |
ea68d270 | 713 | drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED; |
0578042d | 714 | ide_set_media_lock(drive, disk, 1); |
1da177e4 | 715 | check_disk_change(inode->i_bdev); |
ea68d270 | 716 | } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
717 | ret = -EBUSY; |
718 | goto out_put_floppy; | |
719 | } | |
720 | return 0; | |
721 | ||
722 | out_put_floppy: | |
c94964a4 | 723 | floppy->openers--; |
1da177e4 LT |
724 | ide_floppy_put(floppy); |
725 | return ret; | |
726 | } | |
727 | ||
728 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
729 | { | |
730 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
5aeddf90 | 731 | struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); |
1da177e4 | 732 | ide_drive_t *drive = floppy->drive; |
bcc77d9c BP |
733 | |
734 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 735 | |
c94964a4 | 736 | if (floppy->openers == 1) { |
0578042d | 737 | ide_set_media_lock(drive, disk, 0); |
ea68d270 | 738 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 739 | } |
c94964a4 BZ |
740 | |
741 | floppy->openers--; | |
1da177e4 LT |
742 | |
743 | ide_floppy_put(floppy); | |
744 | ||
745 | return 0; | |
746 | } | |
747 | ||
a885c8c4 CH |
748 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
749 | { | |
5aeddf90 BP |
750 | struct ide_floppy_obj *floppy = ide_drv_g(bdev->bd_disk, |
751 | ide_floppy_obj); | |
a885c8c4 CH |
752 | ide_drive_t *drive = floppy->drive; |
753 | ||
754 | geo->heads = drive->bios_head; | |
755 | geo->sectors = drive->bios_sect; | |
756 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
757 | return 0; | |
758 | } | |
759 | ||
ea68d270 BP |
760 | static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc, |
761 | unsigned long arg, unsigned int cmd) | |
20bf7bda | 762 | { |
ea68d270 | 763 | idefloppy_floppy_t *floppy = drive->driver_data; |
0578042d | 764 | struct gendisk *disk = floppy->disk; |
e996fc8a | 765 | int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0; |
ea68d270 | 766 | |
20bf7bda BP |
767 | if (floppy->openers > 1) |
768 | return -EBUSY; | |
769 | ||
0578042d | 770 | ide_set_media_lock(drive, disk, prevent); |
20bf7bda | 771 | |
0c8a6c7a BZ |
772 | if (cmd == CDROMEJECT) |
773 | ide_do_start_stop(drive, disk, 2); | |
20bf7bda BP |
774 | |
775 | return 0; | |
776 | } | |
777 | ||
1da177e4 LT |
778 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
779 | unsigned int cmd, unsigned long arg) | |
780 | { | |
781 | struct block_device *bdev = inode->i_bdev; | |
5aeddf90 BP |
782 | struct ide_floppy_obj *floppy = ide_drv_g(bdev->bd_disk, |
783 | ide_floppy_obj); | |
1da177e4 | 784 | ide_drive_t *drive = floppy->drive; |
8e555123 | 785 | struct ide_atapi_pc pc; |
1da177e4 | 786 | void __user *argp = (void __user *)arg; |
07203f64 | 787 | int err; |
1da177e4 | 788 | |
d56c99e2 | 789 | if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) |
ea68d270 | 790 | return ide_floppy_lockdoor(drive, &pc, arg, cmd); |
1da177e4 | 791 | |
d56c99e2 BZ |
792 | err = ide_floppy_format_ioctl(drive, file, cmd, argp); |
793 | if (err != -ENOTTY) | |
794 | return err; | |
89636af2 BZ |
795 | |
796 | /* | |
797 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
798 | * and CDROM_SEND_PACKET (legacy) ioctls | |
799 | */ | |
800 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
801 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
802 | bdev->bd_disk, cmd, argp); | |
89636af2 BZ |
803 | |
804 | if (err == -ENOTTY) | |
805 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
806 | ||
807 | return err; | |
1da177e4 LT |
808 | } |
809 | ||
810 | static int idefloppy_media_changed(struct gendisk *disk) | |
811 | { | |
5aeddf90 | 812 | struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); |
1da177e4 | 813 | ide_drive_t *drive = floppy->drive; |
6e5fa7b8 | 814 | int ret; |
1da177e4 LT |
815 | |
816 | /* do not scan partitions twice if this is a removable device */ | |
817 | if (drive->attach) { | |
818 | drive->attach = 0; | |
819 | return 0; | |
820 | } | |
ea68d270 BP |
821 | ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED); |
822 | drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED; | |
6e5fa7b8 | 823 | return ret; |
1da177e4 LT |
824 | } |
825 | ||
826 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
827 | { | |
5aeddf90 | 828 | struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); |
1da177e4 LT |
829 | set_capacity(disk, idefloppy_capacity(floppy->drive)); |
830 | return 0; | |
831 | } | |
832 | ||
833 | static struct block_device_operations idefloppy_ops = { | |
52d3ccf7 PC |
834 | .owner = THIS_MODULE, |
835 | .open = idefloppy_open, | |
836 | .release = idefloppy_release, | |
837 | .ioctl = idefloppy_ioctl, | |
838 | .getgeo = idefloppy_getgeo, | |
839 | .media_changed = idefloppy_media_changed, | |
840 | .revalidate_disk = idefloppy_revalidate_disk | |
1da177e4 LT |
841 | }; |
842 | ||
4031bbe4 | 843 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
844 | { |
845 | idefloppy_floppy_t *floppy; | |
846 | struct gendisk *g; | |
847 | ||
848 | if (!strstr("ide-floppy", drive->driver_req)) | |
849 | goto failed; | |
2a924662 | 850 | |
1da177e4 LT |
851 | if (drive->media != ide_floppy) |
852 | goto failed; | |
2a924662 | 853 | |
51509eec | 854 | if (!ide_check_atapi_device(drive, DRV_NAME)) { |
0571c7a4 BP |
855 | printk(KERN_ERR "ide-floppy: %s: not supported by this version" |
856 | " of ide-floppy\n", drive->name); | |
1da177e4 LT |
857 | goto failed; |
858 | } | |
0571c7a4 BP |
859 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
860 | if (!floppy) { | |
861 | printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" | |
862 | " structure\n", drive->name); | |
1da177e4 LT |
863 | goto failed; |
864 | } | |
865 | ||
866 | g = alloc_disk(1 << PARTN_BITS); | |
867 | if (!g) | |
868 | goto out_free_floppy; | |
869 | ||
870 | ide_init_disk(g, drive); | |
871 | ||
1da177e4 LT |
872 | kref_init(&floppy->kref); |
873 | ||
874 | floppy->drive = drive; | |
875 | floppy->driver = &idefloppy_driver; | |
876 | floppy->disk = g; | |
877 | ||
878 | g->private_data = &floppy->driver; | |
879 | ||
880 | drive->driver_data = floppy; | |
881 | ||
0571c7a4 | 882 | idefloppy_setup(drive, floppy); |
8604affd | 883 | |
1da177e4 LT |
884 | g->minors = 1 << PARTN_BITS; |
885 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
886 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
887 | g->fops = &idefloppy_ops; | |
888 | drive->attach = 1; | |
889 | add_disk(g); | |
890 | return 0; | |
891 | ||
1da177e4 LT |
892 | out_free_floppy: |
893 | kfree(floppy); | |
894 | failed: | |
8604affd | 895 | return -ENODEV; |
1da177e4 LT |
896 | } |
897 | ||
0571c7a4 | 898 | static void __exit idefloppy_exit(void) |
1da177e4 | 899 | { |
8604affd | 900 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
901 | } |
902 | ||
17514e8a | 903 | static int __init idefloppy_init(void) |
1da177e4 LT |
904 | { |
905 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 906 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
907 | } |
908 | ||
263756ec | 909 | MODULE_ALIAS("ide:*m-floppy*"); |
0127854d | 910 | MODULE_ALIAS("ide-floppy"); |
1da177e4 LT |
911 | module_init(idefloppy_init); |
912 | module_exit(idefloppy_exit); | |
913 | MODULE_LICENSE("GPL"); | |
0571c7a4 BP |
914 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
915 |