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 | ||
c40d3d38 | 76 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 | 77 | |
0571c7a4 | 78 | /* Error code returned in rq->errors to the higher part of the driver. */ |
1da177e4 LT |
79 | #define IDEFLOPPY_ERROR_GENERAL 101 |
80 | ||
cf8b8975 | 81 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
82 | |
83 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
84 | ||
85 | #define ide_floppy_g(disk) \ | |
86 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
87 | ||
08da591e BZ |
88 | static void idefloppy_cleanup_obj(struct kref *); |
89 | ||
1da177e4 LT |
90 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) |
91 | { | |
92 | struct ide_floppy_obj *floppy = NULL; | |
93 | ||
cf8b8975 | 94 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 | 95 | floppy = ide_floppy_g(disk); |
08da591e | 96 | if (floppy) { |
d3e33ff5 | 97 | if (ide_device_get(floppy->drive)) |
08da591e | 98 | floppy = NULL; |
d3e33ff5 BZ |
99 | else |
100 | kref_get(&floppy->kref); | |
08da591e | 101 | } |
cf8b8975 | 102 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
103 | return floppy; |
104 | } | |
105 | ||
1da177e4 LT |
106 | static void ide_floppy_put(struct ide_floppy_obj *floppy) |
107 | { | |
d3e33ff5 BZ |
108 | ide_drive_t *drive = floppy->drive; |
109 | ||
cf8b8975 | 110 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 111 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
d3e33ff5 | 112 | ide_device_put(drive); |
cf8b8975 | 113 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
114 | } |
115 | ||
1da177e4 | 116 | /* |
0571c7a4 BP |
117 | * Used to finish servicing a request. For read/write requests, we will call |
118 | * ide_end_request to pass to the next buffer. | |
1da177e4 | 119 | */ |
c2b2b293 | 120 | static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
1da177e4 LT |
121 | { |
122 | idefloppy_floppy_t *floppy = drive->driver_data; | |
123 | struct request *rq = HWGROUP(drive)->rq; | |
124 | int error; | |
125 | ||
bcc77d9c | 126 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
127 | |
128 | switch (uptodate) { | |
0571c7a4 BP |
129 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
130 | case 1: error = 0; break; | |
131 | default: error = uptodate; | |
1da177e4 LT |
132 | } |
133 | if (error) | |
134 | floppy->failed_pc = NULL; | |
135 | /* Why does this happen? */ | |
136 | if (!rq) | |
137 | return 0; | |
4aff5e23 | 138 | if (!blk_special_request(rq)) { |
1da177e4 LT |
139 | /* our real local end request function */ |
140 | ide_end_request(drive, uptodate, nsecs); | |
141 | return 0; | |
142 | } | |
143 | rq->errors = error; | |
144 | /* fixme: need to move this local also */ | |
145 | ide_end_drive_cmd(drive, 0, 0); | |
146 | return 0; | |
147 | } | |
148 | ||
8e555123 BP |
149 | static void idefloppy_update_buffers(ide_drive_t *drive, |
150 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
151 | { |
152 | struct request *rq = pc->rq; | |
153 | struct bio *bio = rq->bio; | |
154 | ||
155 | while ((bio = rq->bio) != NULL) | |
c2b2b293 | 156 | idefloppy_end_request(drive, 1, 0); |
1da177e4 LT |
157 | } |
158 | ||
b14c7212 | 159 | static void ide_floppy_callback(ide_drive_t *drive, int dsc) |
1da177e4 LT |
160 | { |
161 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2b9efba4 | 162 | struct ide_atapi_pc *pc = drive->pc; |
81f49382 | 163 | int uptodate = pc->error ? 0 : 1; |
1da177e4 | 164 | |
bcc77d9c BP |
165 | debug_log("Reached %s\n", __func__); |
166 | ||
dd2e9a03 BZ |
167 | if (floppy->failed_pc == pc) |
168 | floppy->failed_pc = NULL; | |
169 | ||
81f49382 BP |
170 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
171 | (pc->rq && blk_pc_request(pc->rq))) | |
172 | uptodate = 1; /* FIXME */ | |
173 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
2b9efba4 | 174 | u8 *buf = pc->buf; |
a6ff2d3b | 175 | |
81f49382 BP |
176 | if (!pc->error) { |
177 | floppy->sense_key = buf[2] & 0x0F; | |
178 | floppy->asc = buf[12]; | |
179 | floppy->ascq = buf[13]; | |
180 | floppy->progress_indication = buf[15] & 0x80 ? | |
181 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 182 | |
81f49382 BP |
183 | if (floppy->failed_pc) |
184 | debug_log("pc = %x, ", floppy->failed_pc->c[0]); | |
bcc77d9c | 185 | |
81f49382 BP |
186 | debug_log("sense key = %x, asc = %x, ascq = %x\n", |
187 | floppy->sense_key, floppy->asc, floppy->ascq); | |
188 | } else | |
189 | printk(KERN_ERR "Error in REQUEST SENSE itself - " | |
190 | "Aborting request!\n"); | |
191 | } | |
1da177e4 | 192 | |
81f49382 | 193 | idefloppy_end_request(drive, uptodate, 0); |
1da177e4 LT |
194 | } |
195 | ||
0eea6458 | 196 | /* The usual interrupt handler called during a packet command. */ |
52d3ccf7 | 197 | static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) |
1da177e4 | 198 | { |
844b9468 | 199 | return ide_pc_intr(drive, idefloppy_pc_intr, idefloppy_update_buffers, |
6b0da28b | 200 | ide_io_buffers); |
1da177e4 LT |
201 | } |
202 | ||
1da177e4 | 203 | /* |
0571c7a4 BP |
204 | * What we have here is a classic case of a top half / bottom half interrupt |
205 | * service routine. In interrupt mode, the device sends an interrupt to signal | |
206 | * that it is ready to receive a packet. However, we need to delay about 2-3 | |
207 | * ticks before issuing the packet or we gets in trouble. | |
1da177e4 | 208 | */ |
cbbc4e81 | 209 | static int idefloppy_transfer_pc(ide_drive_t *drive) |
1da177e4 | 210 | { |
1da177e4 | 211 | /* Send the actual packet */ |
2b9efba4 | 212 | drive->hwif->tp_ops->output_data(drive, NULL, drive->pc->c, 12); |
9567b349 | 213 | |
1da177e4 | 214 | /* Timeout for the packet command */ |
d6e2955a | 215 | return WAIT_FLOPPY_CMD; |
1da177e4 LT |
216 | } |
217 | ||
cbbc4e81 BP |
218 | /* |
219 | * Called as an interrupt (or directly). When the device says it's ready for a | |
220 | * packet, we schedule the packet transfer to occur about 2-3 ticks later in | |
221 | * transfer_pc. | |
222 | */ | |
223 | static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive) | |
1da177e4 LT |
224 | { |
225 | idefloppy_floppy_t *floppy = drive->driver_data; | |
0b2eea4c BZ |
226 | ide_expiry_t *expiry; |
227 | unsigned int timeout; | |
1da177e4 | 228 | |
0571c7a4 | 229 | /* |
1da177e4 LT |
230 | * The following delay solves a problem with ATAPI Zip 100 drives |
231 | * where the Busy flag was apparently being deasserted before the | |
232 | * unit was ready to receive data. This was happening on a | |
233 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
234 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
235 | * used until after the packet is moved in about 50 msec. | |
236 | */ | |
ea68d270 | 237 | if (drive->atapi_flags & IDE_AFLAG_ZIP_DRIVE) { |
0b2eea4c | 238 | timeout = floppy->ticks; |
cbbc4e81 | 239 | expiry = &idefloppy_transfer_pc; |
0b2eea4c | 240 | } else { |
d6e2955a | 241 | timeout = WAIT_FLOPPY_CMD; |
0b2eea4c BZ |
242 | expiry = NULL; |
243 | } | |
244 | ||
2b9efba4 | 245 | return ide_transfer_pc(drive, idefloppy_pc_intr, timeout, expiry); |
1da177e4 LT |
246 | } |
247 | ||
d652c138 | 248 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
8e555123 | 249 | struct ide_atapi_pc *pc) |
1da177e4 | 250 | { |
d652c138 | 251 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
252 | if (floppy->sense_key == 0x02 && |
253 | floppy->asc == 0x3a && | |
254 | floppy->ascq == 0x00) | |
d652c138 BP |
255 | return; |
256 | ||
257 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
258 | "asc = %2x, ascq = %2x\n", | |
259 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
260 | floppy->asc, floppy->ascq); | |
261 | ||
1da177e4 LT |
262 | } |
263 | ||
0571c7a4 | 264 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 265 | struct ide_atapi_pc *pc) |
1da177e4 LT |
266 | { |
267 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1da177e4 | 268 | |
1da177e4 | 269 | if (floppy->failed_pc == NULL && |
30d67099 | 270 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 | 271 | floppy->failed_pc = pc; |
2b9efba4 | 272 | |
1da177e4 | 273 | /* Set the current packet command */ |
2b9efba4 | 274 | drive->pc = pc; |
1da177e4 | 275 | |
757ced89 | 276 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 277 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
278 | ide_floppy_report_error(floppy, pc); |
279 | /* Giving up */ | |
280 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
281 | ||
1da177e4 | 282 | floppy->failed_pc = NULL; |
b14c7212 | 283 | drive->pc_callback(drive, 0); |
1da177e4 LT |
284 | return ide_stopped; |
285 | } | |
286 | ||
bcc77d9c | 287 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
288 | |
289 | pc->retries++; | |
1da177e4 | 290 | |
2b9efba4 | 291 | return ide_issue_pc(drive, idefloppy_start_pc_transfer, |
d6e2955a | 292 | WAIT_FLOPPY_CMD, NULL); |
1da177e4 LT |
293 | } |
294 | ||
0127854d | 295 | void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 296 | { |
7bf7420a | 297 | ide_init_pc(pc); |
30d67099 | 298 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
299 | pc->c[7] = 255; |
300 | pc->c[8] = 255; | |
8e555123 | 301 | pc->req_xfer = 255; |
1da177e4 LT |
302 | } |
303 | ||
0571c7a4 | 304 | /* A mode sense command is used to "sense" floppy parameters. */ |
0127854d | 305 | void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
1da177e4 | 306 | { |
24a5d703 | 307 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 308 | |
7bf7420a | 309 | ide_init_pc(pc); |
30d67099 | 310 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 | 311 | pc->c[1] = 0; |
4de4b9e1 | 312 | pc->c[2] = page_code; |
1da177e4 LT |
313 | |
314 | switch (page_code) { | |
0571c7a4 BP |
315 | case IDEFLOPPY_CAPABILITIES_PAGE: |
316 | length += 12; | |
317 | break; | |
318 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
319 | length += 32; | |
320 | break; | |
321 | default: | |
322 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1da177e4 LT |
323 | "in create_mode_sense_cmd\n"); |
324 | } | |
8f622430 | 325 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 326 | pc->req_xfer = length; |
1da177e4 LT |
327 | } |
328 | ||
ae7e8ddc | 329 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 330 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 331 | unsigned long sector) |
1da177e4 LT |
332 | { |
333 | int block = sector / floppy->bs_factor; | |
334 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
335 | int cmd = rq_data_dir(rq); | |
336 | ||
ae7e8ddc | 337 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
338 | block, blocks); |
339 | ||
7bf7420a | 340 | ide_init_pc(pc); |
ae7e8ddc BP |
341 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
342 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 343 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 344 | |
20cd93be BP |
345 | memcpy(rq->cmd, pc->c, 12); |
346 | ||
1da177e4 | 347 | pc->rq = rq; |
b98b3409 | 348 | pc->b_count = 0; |
4aff5e23 | 349 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 350 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
351 | pc->buf = NULL; |
352 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
5e331095 | 353 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
354 | } |
355 | ||
0571c7a4 | 356 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 357 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 358 | { |
7bf7420a | 359 | ide_init_pc(pc); |
1da177e4 | 360 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf | 361 | pc->rq = rq; |
b98b3409 | 362 | pc->b_count = 0; |
3d6392cf | 363 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
6e5fa7b8 | 364 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 365 | pc->buf = rq->data; |
3d6392cf | 366 | if (rq->bio) |
5e331095 | 367 | pc->flags |= PC_FLAG_DMA_OK; |
3d6392cf JA |
368 | /* |
369 | * possibly problematic, doesn't look like ide-floppy correctly | |
370 | * handled scattered requests if dma fails... | |
371 | */ | |
8e555123 | 372 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
373 | } |
374 | ||
0571c7a4 BP |
375 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
376 | struct request *rq, sector_t block_s) | |
1da177e4 LT |
377 | { |
378 | idefloppy_floppy_t *floppy = drive->driver_data; | |
b98b3409 | 379 | ide_hwif_t *hwif = drive->hwif; |
8e555123 | 380 | struct ide_atapi_pc *pc; |
1da177e4 LT |
381 | unsigned long block = (unsigned long)block_s; |
382 | ||
b98b3409 BP |
383 | debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n", |
384 | __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?", | |
385 | rq->cmd[0], rq->cmd_type, rq->errors); | |
386 | ||
387 | debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n", | |
388 | __func__, (long)rq->sector, rq->nr_sectors, | |
389 | rq->current_nr_sectors); | |
1da177e4 LT |
390 | |
391 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
392 | if (floppy->failed_pc) |
393 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
394 | else |
395 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
396 | drive->name); | |
c2b2b293 | 397 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
398 | return ide_stopped; |
399 | } | |
4aff5e23 | 400 | if (blk_fs_request(rq)) { |
1da177e4 LT |
401 | if (((long)rq->sector % floppy->bs_factor) || |
402 | (rq->nr_sectors % floppy->bs_factor)) { | |
0571c7a4 BP |
403 | printk(KERN_ERR "%s: unsupported r/w request size\n", |
404 | drive->name); | |
c2b2b293 | 405 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
406 | return ide_stopped; |
407 | } | |
2e8a6f89 | 408 | pc = &floppy->queued_pc; |
1da177e4 | 409 | idefloppy_create_rw_cmd(floppy, pc, rq, block); |
4aff5e23 | 410 | } else if (blk_special_request(rq)) { |
8e555123 | 411 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 412 | } else if (blk_pc_request(rq)) { |
2e8a6f89 | 413 | pc = &floppy->queued_pc; |
3d6392cf | 414 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
415 | } else { |
416 | blk_dump_rq_flags(rq, | |
417 | "ide-floppy: unsupported command in queue"); | |
c2b2b293 | 418 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
419 | return ide_stopped; |
420 | } | |
421 | ||
b98b3409 BP |
422 | ide_init_sg_cmd(drive, rq); |
423 | ide_map_sg(drive, rq); | |
424 | ||
425 | pc->sg = hwif->sg_table; | |
426 | pc->sg_cnt = hwif->sg_nents; | |
427 | ||
1da177e4 | 428 | pc->rq = rq; |
5d41893c | 429 | |
1da177e4 LT |
430 | return idefloppy_issue_pc(drive, pc); |
431 | } | |
432 | ||
1da177e4 | 433 | /* |
8e81bbba BP |
434 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
435 | * parameters and use the LBA parameters instead. | |
1da177e4 | 436 | */ |
8e81bbba | 437 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
438 | { |
439 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2ac07d92 | 440 | struct gendisk *disk = floppy->disk; |
8e555123 | 441 | struct ide_atapi_pc pc; |
8e81bbba | 442 | u8 *page; |
1da177e4 | 443 | int capacity, lba_capacity; |
8e81bbba BP |
444 | u16 transfer_rate, sector_size, cyls, rpm; |
445 | u8 heads, sectors; | |
1da177e4 | 446 | |
0127854d | 447 | ide_floppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
8e81bbba | 448 | |
2ac07d92 | 449 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
8e81bbba BP |
450 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" |
451 | " parameters\n"); | |
1da177e4 LT |
452 | return 1; |
453 | } | |
49cac39e BZ |
454 | |
455 | if (pc.buf[3] & 0x80) | |
456 | drive->atapi_flags |= IDE_AFLAG_WP; | |
457 | else | |
458 | drive->atapi_flags &= ~IDE_AFLAG_WP; | |
459 | ||
460 | set_disk_ro(disk, !!(drive->atapi_flags & IDE_AFLAG_WP)); | |
461 | ||
8e555123 | 462 | page = &pc.buf[8]; |
8e81bbba | 463 | |
85ae98a3 HH |
464 | transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]); |
465 | sector_size = be16_to_cpup((__be16 *)&pc.buf[8 + 6]); | |
466 | cyls = be16_to_cpup((__be16 *)&pc.buf[8 + 8]); | |
467 | rpm = be16_to_cpup((__be16 *)&pc.buf[8 + 28]); | |
8e555123 BP |
468 | heads = pc.buf[8 + 4]; |
469 | sectors = pc.buf[8 + 5]; | |
8e81bbba BP |
470 | |
471 | capacity = cyls * heads * sectors * sector_size; | |
472 | ||
473 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
474 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
475 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
476 | drive->name, capacity / 1024, cyls, heads, |
477 | sectors, transfer_rate / 8, sector_size, rpm); | |
478 | ||
479 | memcpy(&floppy->flexible_disk_page, page, 32); | |
480 | drive->bios_cyl = cyls; | |
481 | drive->bios_head = heads; | |
482 | drive->bios_sect = sectors; | |
1da177e4 | 483 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 484 | |
1da177e4 LT |
485 | if (capacity < lba_capacity) { |
486 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
487 | "bytes, but the drive only handles %d\n", | |
488 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
489 | floppy->blocks = floppy->block_size ? |
490 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
491 | } |
492 | return 0; | |
493 | } | |
494 | ||
1da177e4 | 495 | /* |
194ec0c0 BP |
496 | * Determine if a media is present in the floppy drive, and if so, its LBA |
497 | * capacity. | |
1da177e4 | 498 | */ |
194ec0c0 | 499 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
500 | { |
501 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2ac07d92 | 502 | struct gendisk *disk = floppy->disk; |
8e555123 | 503 | struct ide_atapi_pc pc; |
194ec0c0 BP |
504 | u8 *cap_desc; |
505 | u8 header_len, desc_cnt; | |
506 | int i, rc = 1, blocks, length; | |
507 | ||
1da177e4 LT |
508 | drive->bios_cyl = 0; |
509 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
510 | floppy->blocks = 0; |
511 | floppy->bs_factor = 1; | |
1da177e4 LT |
512 | set_capacity(floppy->disk, 0); |
513 | ||
0127854d | 514 | ide_floppy_create_read_capacity_cmd(&pc); |
2ac07d92 | 515 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
1da177e4 LT |
516 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); |
517 | return 1; | |
518 | } | |
8e555123 BP |
519 | header_len = pc.buf[3]; |
520 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
521 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
522 | ||
523 | for (i = 0; i < desc_cnt; i++) { | |
524 | unsigned int desc_start = 4 + i*8; | |
525 | ||
85ae98a3 HH |
526 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
527 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 BP |
528 | |
529 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
530 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 531 | |
194ec0c0 BP |
532 | if (i) |
533 | continue; | |
534 | /* | |
535 | * the code below is valid only for the 1st descriptor, ie i=0 | |
536 | */ | |
1da177e4 | 537 | |
8e555123 | 538 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
539 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
540 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 541 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 542 | /* |
1da177e4 LT |
543 | * If it is not a clik drive, break out |
544 | * (maintains previous driver behaviour) | |
545 | */ | |
546 | break; | |
547 | case CAPACITY_CURRENT: | |
548 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 549 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
550 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
551 | "sector size\n", drive->name, | |
552 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
553 | memcpy(&floppy->cap_desc, cap_desc, 8); |
554 | ||
1da177e4 LT |
555 | if (!length || length % 512) { |
556 | printk(KERN_NOTICE "%s: %d bytes block size " | |
557 | "not supported\n", drive->name, length); | |
558 | } else { | |
194ec0c0 BP |
559 | floppy->blocks = blocks; |
560 | floppy->block_size = length; | |
561 | floppy->bs_factor = length / 512; | |
562 | if (floppy->bs_factor != 1) | |
563 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
564 | "512 bytes block size not " |
565 | "fully supported\n", | |
566 | drive->name); | |
194ec0c0 | 567 | rc = 0; |
1da177e4 LT |
568 | } |
569 | break; | |
570 | case CAPACITY_NO_CARTRIDGE: | |
571 | /* | |
572 | * This is a KERN_ERR so it appears on screen | |
573 | * for the user to see | |
574 | */ | |
575 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
576 | break; | |
577 | case CAPACITY_INVALID: | |
578 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
579 | "in drive\n", drive->name); | |
580 | break; | |
581 | } | |
194ec0c0 | 582 | debug_log("Descriptor 0 Code: %d\n", |
8e555123 | 583 | pc.buf[desc_start + 4] & 0x03); |
1da177e4 LT |
584 | } |
585 | ||
586 | /* Clik! disk does not support get_flexible_disk_page */ | |
ea68d270 | 587 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
8e81bbba | 588 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 | 589 | |
2ac07d92 BZ |
590 | set_capacity(disk, floppy->blocks * floppy->bs_factor); |
591 | ||
1da177e4 LT |
592 | return rc; |
593 | } | |
594 | ||
0571c7a4 | 595 | static sector_t idefloppy_capacity(ide_drive_t *drive) |
1da177e4 LT |
596 | { |
597 | idefloppy_floppy_t *floppy = drive->driver_data; | |
598 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
599 | ||
600 | return capacity; | |
601 | } | |
602 | ||
7662d046 | 603 | #ifdef CONFIG_IDE_PROC_FS |
92f1f8fd EO |
604 | ide_devset_rw_field(bios_cyl, bios_cyl); |
605 | ide_devset_rw_field(bios_head, bios_head); | |
606 | ide_devset_rw_field(bios_sect, bios_sect); | |
8185d5aa BZ |
607 | |
608 | static int get_ticks(ide_drive_t *drive) | |
1da177e4 LT |
609 | { |
610 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8185d5aa BZ |
611 | return floppy->ticks; |
612 | } | |
1da177e4 | 613 | |
8185d5aa BZ |
614 | static int set_ticks(ide_drive_t *drive, int arg) |
615 | { | |
616 | idefloppy_floppy_t *floppy = drive->driver_data; | |
617 | floppy->ticks = arg; | |
618 | return 0; | |
1da177e4 | 619 | } |
8185d5aa | 620 | |
92f1f8fd | 621 | IDE_DEVSET(ticks, DS_SYNC, get_ticks, set_ticks); |
8185d5aa | 622 | |
92f1f8fd EO |
623 | static const struct ide_proc_devset idefloppy_settings[] = { |
624 | IDE_PROC_DEVSET(bios_cyl, 0, 1023), | |
625 | IDE_PROC_DEVSET(bios_head, 0, 255), | |
626 | IDE_PROC_DEVSET(bios_sect, 0, 63), | |
627 | IDE_PROC_DEVSET(ticks, 0, 255), | |
628 | { 0 }, | |
8185d5aa | 629 | }; |
7662d046 | 630 | #endif |
1da177e4 | 631 | |
0571c7a4 | 632 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
1da177e4 | 633 | { |
4dde4492 | 634 | u16 *id = drive->id; |
3ad6776c | 635 | u8 gcw[2]; |
1da177e4 | 636 | |
4dde4492 | 637 | *((u16 *)&gcw) = id[ATA_ID_CONFIG]; |
2e8a6f89 | 638 | |
2207fa5a | 639 | drive->pc_callback = ide_floppy_callback; |
3ad6776c BP |
640 | |
641 | if (((gcw[0] & 0x60) >> 5) == 1) | |
ea68d270 | 642 | drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT; |
1da177e4 | 643 | /* |
0571c7a4 BP |
644 | * We used to check revisions here. At this point however I'm giving up. |
645 | * Just assume they are all broken, its easier. | |
1da177e4 | 646 | * |
0571c7a4 BP |
647 | * The actual reason for the workarounds was likely a driver bug after |
648 | * all rather than a firmware bug, and the workaround below used to hide | |
649 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
650 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 651 | */ |
4dde4492 | 652 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
ea68d270 | 653 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 LT |
654 | /* This value will be visible in the /proc/ide/hdx/settings */ |
655 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
656 | blk_queue_max_sectors(drive->queue, 64); | |
657 | } | |
658 | ||
659 | /* | |
0571c7a4 BP |
660 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
661 | * nasty clicking noises without it, so please don't remove this. | |
662 | */ | |
4dde4492 | 663 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
1da177e4 | 664 | blk_queue_max_sectors(drive->queue, 64); |
ea68d270 | 665 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
0578042d BZ |
666 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
667 | drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK; | |
1da177e4 LT |
668 | } |
669 | ||
194ec0c0 | 670 | (void) ide_floppy_get_capacity(drive); |
1e874f44 BZ |
671 | |
672 | ide_proc_register_driver(drive, floppy->driver); | |
1da177e4 LT |
673 | } |
674 | ||
4031bbe4 | 675 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
676 | { |
677 | idefloppy_floppy_t *floppy = drive->driver_data; | |
678 | struct gendisk *g = floppy->disk; | |
679 | ||
7662d046 | 680 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
681 | |
682 | del_gendisk(g); | |
683 | ||
684 | ide_floppy_put(floppy); | |
1da177e4 LT |
685 | } |
686 | ||
9a24b63d | 687 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 LT |
688 | { |
689 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
690 | ide_drive_t *drive = floppy->drive; | |
691 | struct gendisk *g = floppy->disk; | |
692 | ||
693 | drive->driver_data = NULL; | |
694 | g->private_data = NULL; | |
695 | put_disk(g); | |
696 | kfree(floppy); | |
697 | } | |
698 | ||
ecfd80e4 | 699 | #ifdef CONFIG_IDE_PROC_FS |
0571c7a4 BP |
700 | static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, |
701 | int count, int *eof, void *data) | |
1da177e4 LT |
702 | { |
703 | ide_drive_t*drive = (ide_drive_t *)data; | |
704 | int len; | |
705 | ||
0571c7a4 BP |
706 | len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); |
707 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
708 | } |
709 | ||
710 | static ide_proc_entry_t idefloppy_proc[] = { | |
0571c7a4 BP |
711 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
712 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1da177e4 LT |
713 | { NULL, 0, NULL, NULL } |
714 | }; | |
ecfd80e4 | 715 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 716 | |
4031bbe4 | 717 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 718 | |
1da177e4 | 719 | static ide_driver_t idefloppy_driver = { |
8604affd | 720 | .gen_driver = { |
4ef3b8f4 | 721 | .owner = THIS_MODULE, |
8604affd BZ |
722 | .name = "ide-floppy", |
723 | .bus = &ide_bus_type, | |
8604affd | 724 | }, |
4031bbe4 RK |
725 | .probe = ide_floppy_probe, |
726 | .remove = ide_floppy_remove, | |
1da177e4 LT |
727 | .version = IDEFLOPPY_VERSION, |
728 | .media = ide_floppy, | |
1da177e4 | 729 | .do_request = idefloppy_do_request, |
c2b2b293 | 730 | .end_request = idefloppy_end_request, |
1da177e4 | 731 | .error = __ide_error, |
7662d046 | 732 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 733 | .proc = idefloppy_proc, |
8185d5aa | 734 | .settings = idefloppy_settings, |
7662d046 | 735 | #endif |
1da177e4 LT |
736 | }; |
737 | ||
738 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
739 | { | |
740 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
741 | struct ide_floppy_obj *floppy; | |
742 | ide_drive_t *drive; | |
1da177e4 LT |
743 | int ret = 0; |
744 | ||
bcc77d9c | 745 | debug_log("Reached %s\n", __func__); |
1da177e4 | 746 | |
0571c7a4 BP |
747 | floppy = ide_floppy_get(disk); |
748 | if (!floppy) | |
1da177e4 LT |
749 | return -ENXIO; |
750 | ||
751 | drive = floppy->drive; | |
752 | ||
c94964a4 | 753 | floppy->openers++; |
1da177e4 | 754 | |
c94964a4 | 755 | if (floppy->openers == 1) { |
ea68d270 | 756 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
757 | /* Just in case */ |
758 | ||
de699ad5 | 759 | if (ide_do_test_unit_ready(drive, disk)) |
0c8a6c7a | 760 | ide_do_start_stop(drive, disk, 1); |
1da177e4 | 761 | |
194ec0c0 | 762 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
763 | && (filp->f_flags & O_NDELAY) == 0 |
764 | /* | |
0571c7a4 BP |
765 | * Allow O_NDELAY to open a drive without a disk, or with an |
766 | * unreadable disk, so that we can get the format capacity | |
767 | * of the drive or begin the format - Sam | |
768 | */ | |
1da177e4 | 769 | ) { |
1da177e4 LT |
770 | ret = -EIO; |
771 | goto out_put_floppy; | |
772 | } | |
773 | ||
49cac39e | 774 | if ((drive->atapi_flags & IDE_AFLAG_WP) && (filp->f_mode & 2)) { |
1da177e4 LT |
775 | ret = -EROFS; |
776 | goto out_put_floppy; | |
777 | } | |
e996fc8a | 778 | |
ea68d270 | 779 | drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED; |
0578042d | 780 | ide_set_media_lock(drive, disk, 1); |
1da177e4 | 781 | check_disk_change(inode->i_bdev); |
ea68d270 | 782 | } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
783 | ret = -EBUSY; |
784 | goto out_put_floppy; | |
785 | } | |
786 | return 0; | |
787 | ||
788 | out_put_floppy: | |
c94964a4 | 789 | floppy->openers--; |
1da177e4 LT |
790 | ide_floppy_put(floppy); |
791 | return ret; | |
792 | } | |
793 | ||
794 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
795 | { | |
796 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
797 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
798 | ide_drive_t *drive = floppy->drive; | |
bcc77d9c BP |
799 | |
800 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 801 | |
c94964a4 | 802 | if (floppy->openers == 1) { |
0578042d | 803 | ide_set_media_lock(drive, disk, 0); |
ea68d270 | 804 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 805 | } |
c94964a4 BZ |
806 | |
807 | floppy->openers--; | |
1da177e4 LT |
808 | |
809 | ide_floppy_put(floppy); | |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
a885c8c4 CH |
814 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
815 | { | |
816 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
817 | ide_drive_t *drive = floppy->drive; | |
818 | ||
819 | geo->heads = drive->bios_head; | |
820 | geo->sectors = drive->bios_sect; | |
821 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
822 | return 0; | |
823 | } | |
824 | ||
ea68d270 BP |
825 | static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc, |
826 | unsigned long arg, unsigned int cmd) | |
20bf7bda | 827 | { |
ea68d270 | 828 | idefloppy_floppy_t *floppy = drive->driver_data; |
0578042d | 829 | struct gendisk *disk = floppy->disk; |
e996fc8a | 830 | int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0; |
ea68d270 | 831 | |
20bf7bda BP |
832 | if (floppy->openers > 1) |
833 | return -EBUSY; | |
834 | ||
0578042d | 835 | ide_set_media_lock(drive, disk, prevent); |
20bf7bda | 836 | |
0c8a6c7a BZ |
837 | if (cmd == CDROMEJECT) |
838 | ide_do_start_stop(drive, disk, 2); | |
20bf7bda BP |
839 | |
840 | return 0; | |
841 | } | |
842 | ||
1da177e4 LT |
843 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
844 | unsigned int cmd, unsigned long arg) | |
845 | { | |
846 | struct block_device *bdev = inode->i_bdev; | |
847 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
848 | ide_drive_t *drive = floppy->drive; | |
8e555123 | 849 | struct ide_atapi_pc pc; |
1da177e4 | 850 | void __user *argp = (void __user *)arg; |
07203f64 | 851 | int err; |
1da177e4 | 852 | |
d56c99e2 | 853 | if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) |
ea68d270 | 854 | return ide_floppy_lockdoor(drive, &pc, arg, cmd); |
1da177e4 | 855 | |
d56c99e2 BZ |
856 | err = ide_floppy_format_ioctl(drive, file, cmd, argp); |
857 | if (err != -ENOTTY) | |
858 | return err; | |
89636af2 BZ |
859 | |
860 | /* | |
861 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
862 | * and CDROM_SEND_PACKET (legacy) ioctls | |
863 | */ | |
864 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
865 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
866 | bdev->bd_disk, cmd, argp); | |
89636af2 BZ |
867 | |
868 | if (err == -ENOTTY) | |
869 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
870 | ||
871 | return err; | |
1da177e4 LT |
872 | } |
873 | ||
874 | static int idefloppy_media_changed(struct gendisk *disk) | |
875 | { | |
876 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
877 | ide_drive_t *drive = floppy->drive; | |
6e5fa7b8 | 878 | int ret; |
1da177e4 LT |
879 | |
880 | /* do not scan partitions twice if this is a removable device */ | |
881 | if (drive->attach) { | |
882 | drive->attach = 0; | |
883 | return 0; | |
884 | } | |
ea68d270 BP |
885 | ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED); |
886 | drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED; | |
6e5fa7b8 | 887 | return ret; |
1da177e4 LT |
888 | } |
889 | ||
890 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
891 | { | |
892 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
893 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
894 | return 0; | |
895 | } | |
896 | ||
897 | static struct block_device_operations idefloppy_ops = { | |
52d3ccf7 PC |
898 | .owner = THIS_MODULE, |
899 | .open = idefloppy_open, | |
900 | .release = idefloppy_release, | |
901 | .ioctl = idefloppy_ioctl, | |
902 | .getgeo = idefloppy_getgeo, | |
903 | .media_changed = idefloppy_media_changed, | |
904 | .revalidate_disk = idefloppy_revalidate_disk | |
1da177e4 LT |
905 | }; |
906 | ||
4031bbe4 | 907 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
908 | { |
909 | idefloppy_floppy_t *floppy; | |
910 | struct gendisk *g; | |
911 | ||
912 | if (!strstr("ide-floppy", drive->driver_req)) | |
913 | goto failed; | |
2a924662 | 914 | |
1da177e4 LT |
915 | if (drive->media != ide_floppy) |
916 | goto failed; | |
2a924662 | 917 | |
51509eec | 918 | if (!ide_check_atapi_device(drive, DRV_NAME)) { |
0571c7a4 BP |
919 | printk(KERN_ERR "ide-floppy: %s: not supported by this version" |
920 | " of ide-floppy\n", drive->name); | |
1da177e4 LT |
921 | goto failed; |
922 | } | |
0571c7a4 BP |
923 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
924 | if (!floppy) { | |
925 | printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" | |
926 | " structure\n", drive->name); | |
1da177e4 LT |
927 | goto failed; |
928 | } | |
929 | ||
930 | g = alloc_disk(1 << PARTN_BITS); | |
931 | if (!g) | |
932 | goto out_free_floppy; | |
933 | ||
934 | ide_init_disk(g, drive); | |
935 | ||
1da177e4 LT |
936 | kref_init(&floppy->kref); |
937 | ||
938 | floppy->drive = drive; | |
939 | floppy->driver = &idefloppy_driver; | |
940 | floppy->disk = g; | |
941 | ||
942 | g->private_data = &floppy->driver; | |
943 | ||
944 | drive->driver_data = floppy; | |
945 | ||
0571c7a4 | 946 | idefloppy_setup(drive, floppy); |
8604affd | 947 | |
1da177e4 LT |
948 | g->minors = 1 << PARTN_BITS; |
949 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
950 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
951 | g->fops = &idefloppy_ops; | |
952 | drive->attach = 1; | |
953 | add_disk(g); | |
954 | return 0; | |
955 | ||
1da177e4 LT |
956 | out_free_floppy: |
957 | kfree(floppy); | |
958 | failed: | |
8604affd | 959 | return -ENODEV; |
1da177e4 LT |
960 | } |
961 | ||
0571c7a4 | 962 | static void __exit idefloppy_exit(void) |
1da177e4 | 963 | { |
8604affd | 964 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
965 | } |
966 | ||
17514e8a | 967 | static int __init idefloppy_init(void) |
1da177e4 LT |
968 | { |
969 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 970 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
971 | } |
972 | ||
263756ec | 973 | MODULE_ALIAS("ide:*m-floppy*"); |
0127854d | 974 | MODULE_ALIAS("ide-floppy"); |
1da177e4 LT |
975 | module_init(idefloppy_init); |
976 | module_exit(idefloppy_exit); | |
977 | MODULE_LICENSE("GPL"); | |
0571c7a4 BP |
978 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
979 |