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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 | ||
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 | ||
f373bd82 | 49 | /* define to see debug info */ |
1da177e4 | 50 | #define IDEFLOPPY_DEBUG_LOG 0 |
1da177e4 LT |
51 | |
52 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ | |
0571c7a4 | 53 | #define IDEFLOPPY_DEBUG(fmt, args...) |
1da177e4 LT |
54 | |
55 | #if IDEFLOPPY_DEBUG_LOG | |
bcc77d9c BP |
56 | #define debug_log(fmt, args...) \ |
57 | printk(KERN_INFO "ide-floppy: " fmt, ## args) | |
1da177e4 | 58 | #else |
0571c7a4 | 59 | #define debug_log(fmt, args...) do {} while (0) |
1da177e4 LT |
60 | #endif |
61 | ||
62 | ||
0571c7a4 | 63 | /* Some drives require a longer irq timeout. */ |
1da177e4 LT |
64 | #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) |
65 | ||
66 | /* | |
0571c7a4 BP |
67 | * After each failed packet command we issue a request sense command and retry |
68 | * the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
1da177e4 LT |
69 | */ |
70 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
71 | ||
194ec0c0 | 72 | /* format capacities descriptor codes */ |
1da177e4 LT |
73 | #define CAPACITY_INVALID 0x00 |
74 | #define CAPACITY_UNFORMATTED 0x01 | |
75 | #define CAPACITY_CURRENT 0x02 | |
76 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
77 | ||
78 | /* | |
0571c7a4 BP |
79 | * Most of our global data which we need to save even as we leave the driver |
80 | * due to an interrupt or a timer event is stored in a variable of type | |
81 | * idefloppy_floppy_t, defined below. | |
1da177e4 LT |
82 | */ |
83 | typedef struct ide_floppy_obj { | |
84 | ide_drive_t *drive; | |
85 | ide_driver_t *driver; | |
86 | struct gendisk *disk; | |
87 | struct kref kref; | |
c94964a4 | 88 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
89 | |
90 | /* Current packet command */ | |
8e555123 | 91 | struct ide_atapi_pc *pc; |
1da177e4 | 92 | /* Last failed packet command */ |
8e555123 | 93 | struct ide_atapi_pc *failed_pc; |
2e8a6f89 BZ |
94 | /* used for blk_{fs,pc}_request() requests */ |
95 | struct ide_atapi_pc queued_pc; | |
394a4c21 | 96 | |
2e8a6f89 | 97 | struct ide_atapi_pc request_sense_pc; |
394a4c21 | 98 | struct request request_sense_rq; |
1da177e4 | 99 | |
0571c7a4 | 100 | /* Last error information */ |
1da177e4 LT |
101 | u8 sense_key, asc, ascq; |
102 | /* delay this long before sending packet command */ | |
103 | u8 ticks; | |
104 | int progress_indication; | |
105 | ||
0571c7a4 | 106 | /* Device information */ |
1da177e4 LT |
107 | /* Current format */ |
108 | int blocks, block_size, bs_factor; | |
194ec0c0 BP |
109 | /* Last format capacity descriptor */ |
110 | u8 cap_desc[8]; | |
1da177e4 | 111 | /* Copy of the flexible disk page */ |
8e81bbba | 112 | u8 flexible_disk_page[32]; |
1da177e4 LT |
113 | } idefloppy_floppy_t; |
114 | ||
c40d3d38 | 115 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 | 116 | |
0571c7a4 | 117 | /* IOCTLs used in low-level formatting. */ |
1da177e4 LT |
118 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 |
119 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 | |
120 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 | |
121 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 | |
122 | ||
0571c7a4 | 123 | /* Error code returned in rq->errors to the higher part of the driver. */ |
1da177e4 LT |
124 | #define IDEFLOPPY_ERROR_GENERAL 101 |
125 | ||
1da177e4 | 126 | /* |
948391d1 BP |
127 | * Pages of the SELECT SENSE / MODE SENSE packet commands. |
128 | * See SFF-8070i spec. | |
1da177e4 LT |
129 | */ |
130 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b | |
131 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 | |
132 | ||
cf8b8975 | 133 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
134 | |
135 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
136 | ||
137 | #define ide_floppy_g(disk) \ | |
138 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
139 | ||
08da591e BZ |
140 | static void idefloppy_cleanup_obj(struct kref *); |
141 | ||
1da177e4 LT |
142 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) |
143 | { | |
144 | struct ide_floppy_obj *floppy = NULL; | |
145 | ||
cf8b8975 | 146 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 | 147 | floppy = ide_floppy_g(disk); |
08da591e | 148 | if (floppy) { |
d3e33ff5 | 149 | if (ide_device_get(floppy->drive)) |
08da591e | 150 | floppy = NULL; |
d3e33ff5 BZ |
151 | else |
152 | kref_get(&floppy->kref); | |
08da591e | 153 | } |
cf8b8975 | 154 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
155 | return floppy; |
156 | } | |
157 | ||
1da177e4 LT |
158 | static void ide_floppy_put(struct ide_floppy_obj *floppy) |
159 | { | |
d3e33ff5 BZ |
160 | ide_drive_t *drive = floppy->drive; |
161 | ||
cf8b8975 | 162 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 163 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
d3e33ff5 | 164 | ide_device_put(drive); |
cf8b8975 | 165 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
166 | } |
167 | ||
1da177e4 | 168 | /* |
0571c7a4 BP |
169 | * Used to finish servicing a request. For read/write requests, we will call |
170 | * ide_end_request to pass to the next buffer. | |
1da177e4 | 171 | */ |
c2b2b293 | 172 | static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
1da177e4 LT |
173 | { |
174 | idefloppy_floppy_t *floppy = drive->driver_data; | |
175 | struct request *rq = HWGROUP(drive)->rq; | |
176 | int error; | |
177 | ||
bcc77d9c | 178 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
179 | |
180 | switch (uptodate) { | |
0571c7a4 BP |
181 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
182 | case 1: error = 0; break; | |
183 | default: error = uptodate; | |
1da177e4 LT |
184 | } |
185 | if (error) | |
186 | floppy->failed_pc = NULL; | |
187 | /* Why does this happen? */ | |
188 | if (!rq) | |
189 | return 0; | |
4aff5e23 | 190 | if (!blk_special_request(rq)) { |
1da177e4 LT |
191 | /* our real local end request function */ |
192 | ide_end_request(drive, uptodate, nsecs); | |
193 | return 0; | |
194 | } | |
195 | rq->errors = error; | |
196 | /* fixme: need to move this local also */ | |
197 | ide_end_drive_cmd(drive, 0, 0); | |
198 | return 0; | |
199 | } | |
200 | ||
8e555123 BP |
201 | static void idefloppy_update_buffers(ide_drive_t *drive, |
202 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
203 | { |
204 | struct request *rq = pc->rq; | |
205 | struct bio *bio = rq->bio; | |
206 | ||
207 | while ((bio = rq->bio) != NULL) | |
c2b2b293 | 208 | idefloppy_end_request(drive, 1, 0); |
1da177e4 LT |
209 | } |
210 | ||
81f49382 | 211 | static void ide_floppy_callback(ide_drive_t *drive) |
1da177e4 LT |
212 | { |
213 | idefloppy_floppy_t *floppy = drive->driver_data; | |
81f49382 BP |
214 | struct ide_atapi_pc *pc = floppy->pc; |
215 | int uptodate = pc->error ? 0 : 1; | |
1da177e4 | 216 | |
bcc77d9c BP |
217 | debug_log("Reached %s\n", __func__); |
218 | ||
dd2e9a03 BZ |
219 | if (floppy->failed_pc == pc) |
220 | floppy->failed_pc = NULL; | |
221 | ||
81f49382 BP |
222 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
223 | (pc->rq && blk_pc_request(pc->rq))) | |
224 | uptodate = 1; /* FIXME */ | |
225 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
226 | u8 *buf = floppy->pc->buf; | |
a6ff2d3b | 227 | |
81f49382 BP |
228 | if (!pc->error) { |
229 | floppy->sense_key = buf[2] & 0x0F; | |
230 | floppy->asc = buf[12]; | |
231 | floppy->ascq = buf[13]; | |
232 | floppy->progress_indication = buf[15] & 0x80 ? | |
233 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 234 | |
81f49382 BP |
235 | if (floppy->failed_pc) |
236 | debug_log("pc = %x, ", floppy->failed_pc->c[0]); | |
bcc77d9c | 237 | |
81f49382 BP |
238 | debug_log("sense key = %x, asc = %x, ascq = %x\n", |
239 | floppy->sense_key, floppy->asc, floppy->ascq); | |
240 | } else | |
241 | printk(KERN_ERR "Error in REQUEST SENSE itself - " | |
242 | "Aborting request!\n"); | |
243 | } | |
1da177e4 | 244 | |
81f49382 | 245 | idefloppy_end_request(drive, uptodate, 0); |
1da177e4 LT |
246 | } |
247 | ||
8e555123 | 248 | static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 249 | { |
7bf7420a | 250 | ide_init_pc(pc); |
30d67099 | 251 | pc->c[0] = GPCMD_REQUEST_SENSE; |
1da177e4 | 252 | pc->c[4] = 255; |
8e555123 | 253 | pc->req_xfer = 18; |
1da177e4 LT |
254 | } |
255 | ||
256 | /* | |
0571c7a4 BP |
257 | * Called when an error was detected during the last packet command. We queue a |
258 | * request sense packet command in the head of the request list. | |
1da177e4 | 259 | */ |
0571c7a4 | 260 | static void idefloppy_retry_pc(ide_drive_t *drive) |
1da177e4 | 261 | { |
394a4c21 BZ |
262 | struct ide_floppy_obj *floppy = drive->driver_data; |
263 | struct request *rq = &floppy->request_sense_rq; | |
2e8a6f89 | 264 | struct ide_atapi_pc *pc = &floppy->request_sense_pc; |
1da177e4 | 265 | |
64a57fe4 | 266 | (void)ide_read_error(drive); |
1da177e4 | 267 | idefloppy_create_request_sense_cmd(pc); |
7645c151 | 268 | ide_queue_pc_head(drive, floppy->disk, pc, rq); |
1da177e4 LT |
269 | } |
270 | ||
0eea6458 | 271 | /* The usual interrupt handler called during a packet command. */ |
52d3ccf7 | 272 | static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) |
1da177e4 LT |
273 | { |
274 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1da177e4 | 275 | |
646c0cb6 BZ |
276 | return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr, |
277 | IDEFLOPPY_WAIT_CMD, NULL, idefloppy_update_buffers, | |
acaa0f5f | 278 | idefloppy_retry_pc, NULL, ide_io_buffers); |
1da177e4 LT |
279 | } |
280 | ||
1da177e4 | 281 | /* |
0571c7a4 BP |
282 | * What we have here is a classic case of a top half / bottom half interrupt |
283 | * service routine. In interrupt mode, the device sends an interrupt to signal | |
284 | * that it is ready to receive a packet. However, we need to delay about 2-3 | |
285 | * ticks before issuing the packet or we gets in trouble. | |
1da177e4 | 286 | */ |
cbbc4e81 | 287 | static int idefloppy_transfer_pc(ide_drive_t *drive) |
1da177e4 LT |
288 | { |
289 | idefloppy_floppy_t *floppy = drive->driver_data; | |
290 | ||
291 | /* Send the actual packet */ | |
374e042c | 292 | drive->hwif->tp_ops->output_data(drive, NULL, floppy->pc->c, 12); |
9567b349 | 293 | |
1da177e4 LT |
294 | /* Timeout for the packet command */ |
295 | return IDEFLOPPY_WAIT_CMD; | |
296 | } | |
297 | ||
cbbc4e81 BP |
298 | |
299 | /* | |
300 | * Called as an interrupt (or directly). When the device says it's ready for a | |
301 | * packet, we schedule the packet transfer to occur about 2-3 ticks later in | |
302 | * transfer_pc. | |
303 | */ | |
304 | static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive) | |
1da177e4 LT |
305 | { |
306 | idefloppy_floppy_t *floppy = drive->driver_data; | |
6ffb6641 | 307 | struct ide_atapi_pc *pc = floppy->pc; |
0b2eea4c BZ |
308 | ide_expiry_t *expiry; |
309 | unsigned int timeout; | |
1da177e4 | 310 | |
0571c7a4 | 311 | /* |
1da177e4 LT |
312 | * The following delay solves a problem with ATAPI Zip 100 drives |
313 | * where the Busy flag was apparently being deasserted before the | |
314 | * unit was ready to receive data. This was happening on a | |
315 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
316 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
317 | * used until after the packet is moved in about 50 msec. | |
318 | */ | |
ea68d270 | 319 | if (drive->atapi_flags & IDE_AFLAG_ZIP_DRIVE) { |
0b2eea4c | 320 | timeout = floppy->ticks; |
cbbc4e81 | 321 | expiry = &idefloppy_transfer_pc; |
0b2eea4c BZ |
322 | } else { |
323 | timeout = IDEFLOPPY_WAIT_CMD; | |
324 | expiry = NULL; | |
325 | } | |
326 | ||
594c16d8 | 327 | return ide_transfer_pc(drive, pc, idefloppy_pc_intr, timeout, expiry); |
1da177e4 LT |
328 | } |
329 | ||
d652c138 | 330 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
8e555123 | 331 | struct ide_atapi_pc *pc) |
1da177e4 | 332 | { |
d652c138 | 333 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
334 | if (floppy->sense_key == 0x02 && |
335 | floppy->asc == 0x3a && | |
336 | floppy->ascq == 0x00) | |
d652c138 BP |
337 | return; |
338 | ||
339 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
340 | "asc = %2x, ascq = %2x\n", | |
341 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
342 | floppy->asc, floppy->ascq); | |
343 | ||
1da177e4 LT |
344 | } |
345 | ||
0571c7a4 | 346 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 347 | struct ide_atapi_pc *pc) |
1da177e4 LT |
348 | { |
349 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1da177e4 | 350 | |
1da177e4 | 351 | if (floppy->failed_pc == NULL && |
30d67099 | 352 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 LT |
353 | floppy->failed_pc = pc; |
354 | /* Set the current packet command */ | |
355 | floppy->pc = pc; | |
356 | ||
757ced89 | 357 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 358 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
359 | ide_floppy_report_error(floppy, pc); |
360 | /* Giving up */ | |
361 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
362 | ||
1da177e4 | 363 | floppy->failed_pc = NULL; |
2207fa5a | 364 | drive->pc_callback(drive); |
1da177e4 LT |
365 | return ide_stopped; |
366 | } | |
367 | ||
bcc77d9c | 368 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
369 | |
370 | pc->retries++; | |
1da177e4 | 371 | |
cbbc4e81 | 372 | return ide_issue_pc(drive, pc, idefloppy_start_pc_transfer, |
6bf1641c | 373 | IDEFLOPPY_WAIT_CMD, NULL); |
1da177e4 LT |
374 | } |
375 | ||
8e555123 | 376 | static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent) |
1da177e4 | 377 | { |
bcc77d9c | 378 | debug_log("creating prevent removal command, prevent = %d\n", prevent); |
1da177e4 | 379 | |
7bf7420a | 380 | ide_init_pc(pc); |
30d67099 | 381 | pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
1da177e4 LT |
382 | pc->c[4] = prevent; |
383 | } | |
384 | ||
8e555123 | 385 | static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 386 | { |
7bf7420a | 387 | ide_init_pc(pc); |
30d67099 | 388 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
389 | pc->c[7] = 255; |
390 | pc->c[8] = 255; | |
8e555123 | 391 | pc->req_xfer = 255; |
1da177e4 LT |
392 | } |
393 | ||
8e555123 BP |
394 | static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b, |
395 | int l, int flags) | |
1da177e4 | 396 | { |
7bf7420a | 397 | ide_init_pc(pc); |
30d67099 | 398 | pc->c[0] = GPCMD_FORMAT_UNIT; |
1da177e4 LT |
399 | pc->c[1] = 0x17; |
400 | ||
8e555123 BP |
401 | memset(pc->buf, 0, 12); |
402 | pc->buf[1] = 0xA2; | |
1da177e4 LT |
403 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ |
404 | ||
405 | if (flags & 1) /* Verify bit on... */ | |
8e555123 BP |
406 | pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */ |
407 | pc->buf[3] = 8; | |
1da177e4 | 408 | |
8e555123 BP |
409 | put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4])); |
410 | put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8])); | |
411 | pc->buf_size = 12; | |
6e5fa7b8 | 412 | pc->flags |= PC_FLAG_WRITING; |
1da177e4 LT |
413 | } |
414 | ||
0571c7a4 | 415 | /* A mode sense command is used to "sense" floppy parameters. */ |
8e555123 | 416 | static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, |
4de4b9e1 | 417 | u8 page_code) |
1da177e4 | 418 | { |
24a5d703 | 419 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 420 | |
7bf7420a | 421 | ide_init_pc(pc); |
30d67099 | 422 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 | 423 | pc->c[1] = 0; |
4de4b9e1 | 424 | pc->c[2] = page_code; |
1da177e4 LT |
425 | |
426 | switch (page_code) { | |
0571c7a4 BP |
427 | case IDEFLOPPY_CAPABILITIES_PAGE: |
428 | length += 12; | |
429 | break; | |
430 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
431 | length += 32; | |
432 | break; | |
433 | default: | |
434 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1da177e4 LT |
435 | "in create_mode_sense_cmd\n"); |
436 | } | |
8f622430 | 437 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 438 | pc->req_xfer = length; |
1da177e4 LT |
439 | } |
440 | ||
8e555123 | 441 | static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start) |
1da177e4 | 442 | { |
7bf7420a | 443 | ide_init_pc(pc); |
30d67099 | 444 | pc->c[0] = GPCMD_START_STOP_UNIT; |
1da177e4 LT |
445 | pc->c[4] = start; |
446 | } | |
447 | ||
ae7e8ddc | 448 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 449 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 450 | unsigned long sector) |
1da177e4 LT |
451 | { |
452 | int block = sector / floppy->bs_factor; | |
453 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
454 | int cmd = rq_data_dir(rq); | |
455 | ||
ae7e8ddc | 456 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
457 | block, blocks); |
458 | ||
7bf7420a | 459 | ide_init_pc(pc); |
ae7e8ddc BP |
460 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
461 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 462 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 463 | |
20cd93be BP |
464 | memcpy(rq->cmd, pc->c, 12); |
465 | ||
1da177e4 | 466 | pc->rq = rq; |
b98b3409 | 467 | pc->b_count = 0; |
4aff5e23 | 468 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 469 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
470 | pc->buf = NULL; |
471 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
5e331095 | 472 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
473 | } |
474 | ||
0571c7a4 | 475 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 476 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 477 | { |
7bf7420a | 478 | ide_init_pc(pc); |
1da177e4 | 479 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf | 480 | pc->rq = rq; |
b98b3409 | 481 | pc->b_count = 0; |
3d6392cf | 482 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
6e5fa7b8 | 483 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 484 | pc->buf = rq->data; |
3d6392cf | 485 | if (rq->bio) |
5e331095 | 486 | pc->flags |= PC_FLAG_DMA_OK; |
3d6392cf JA |
487 | /* |
488 | * possibly problematic, doesn't look like ide-floppy correctly | |
489 | * handled scattered requests if dma fails... | |
490 | */ | |
8e555123 | 491 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
492 | } |
493 | ||
0571c7a4 BP |
494 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
495 | struct request *rq, sector_t block_s) | |
1da177e4 LT |
496 | { |
497 | idefloppy_floppy_t *floppy = drive->driver_data; | |
b98b3409 | 498 | ide_hwif_t *hwif = drive->hwif; |
8e555123 | 499 | struct ide_atapi_pc *pc; |
1da177e4 LT |
500 | unsigned long block = (unsigned long)block_s; |
501 | ||
b98b3409 BP |
502 | debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n", |
503 | __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?", | |
504 | rq->cmd[0], rq->cmd_type, rq->errors); | |
505 | ||
506 | debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n", | |
507 | __func__, (long)rq->sector, rq->nr_sectors, | |
508 | rq->current_nr_sectors); | |
1da177e4 LT |
509 | |
510 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
511 | if (floppy->failed_pc) |
512 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
513 | else |
514 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
515 | drive->name); | |
c2b2b293 | 516 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
517 | return ide_stopped; |
518 | } | |
4aff5e23 | 519 | if (blk_fs_request(rq)) { |
1da177e4 LT |
520 | if (((long)rq->sector % floppy->bs_factor) || |
521 | (rq->nr_sectors % floppy->bs_factor)) { | |
0571c7a4 BP |
522 | printk(KERN_ERR "%s: unsupported r/w request size\n", |
523 | drive->name); | |
c2b2b293 | 524 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
525 | return ide_stopped; |
526 | } | |
2e8a6f89 | 527 | pc = &floppy->queued_pc; |
1da177e4 | 528 | idefloppy_create_rw_cmd(floppy, pc, rq, block); |
4aff5e23 | 529 | } else if (blk_special_request(rq)) { |
8e555123 | 530 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 531 | } else if (blk_pc_request(rq)) { |
2e8a6f89 | 532 | pc = &floppy->queued_pc; |
3d6392cf | 533 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
534 | } else { |
535 | blk_dump_rq_flags(rq, | |
536 | "ide-floppy: unsupported command in queue"); | |
c2b2b293 | 537 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
538 | return ide_stopped; |
539 | } | |
540 | ||
b98b3409 BP |
541 | ide_init_sg_cmd(drive, rq); |
542 | ide_map_sg(drive, rq); | |
543 | ||
544 | pc->sg = hwif->sg_table; | |
545 | pc->sg_cnt = hwif->sg_nents; | |
546 | ||
1da177e4 | 547 | pc->rq = rq; |
5d41893c | 548 | |
1da177e4 LT |
549 | return idefloppy_issue_pc(drive, pc); |
550 | } | |
551 | ||
1da177e4 | 552 | /* |
8e81bbba BP |
553 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
554 | * parameters and use the LBA parameters instead. | |
1da177e4 | 555 | */ |
8e81bbba | 556 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
557 | { |
558 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2ac07d92 | 559 | struct gendisk *disk = floppy->disk; |
8e555123 | 560 | struct ide_atapi_pc pc; |
8e81bbba | 561 | u8 *page; |
1da177e4 | 562 | int capacity, lba_capacity; |
8e81bbba BP |
563 | u16 transfer_rate, sector_size, cyls, rpm; |
564 | u8 heads, sectors; | |
1da177e4 | 565 | |
4de4b9e1 | 566 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
8e81bbba | 567 | |
2ac07d92 | 568 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
8e81bbba BP |
569 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" |
570 | " parameters\n"); | |
1da177e4 LT |
571 | return 1; |
572 | } | |
49cac39e BZ |
573 | |
574 | if (pc.buf[3] & 0x80) | |
575 | drive->atapi_flags |= IDE_AFLAG_WP; | |
576 | else | |
577 | drive->atapi_flags &= ~IDE_AFLAG_WP; | |
578 | ||
579 | set_disk_ro(disk, !!(drive->atapi_flags & IDE_AFLAG_WP)); | |
580 | ||
8e555123 | 581 | page = &pc.buf[8]; |
8e81bbba | 582 | |
85ae98a3 HH |
583 | transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]); |
584 | sector_size = be16_to_cpup((__be16 *)&pc.buf[8 + 6]); | |
585 | cyls = be16_to_cpup((__be16 *)&pc.buf[8 + 8]); | |
586 | rpm = be16_to_cpup((__be16 *)&pc.buf[8 + 28]); | |
8e555123 BP |
587 | heads = pc.buf[8 + 4]; |
588 | sectors = pc.buf[8 + 5]; | |
8e81bbba BP |
589 | |
590 | capacity = cyls * heads * sectors * sector_size; | |
591 | ||
592 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
593 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
594 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
595 | drive->name, capacity / 1024, cyls, heads, |
596 | sectors, transfer_rate / 8, sector_size, rpm); | |
597 | ||
598 | memcpy(&floppy->flexible_disk_page, page, 32); | |
599 | drive->bios_cyl = cyls; | |
600 | drive->bios_head = heads; | |
601 | drive->bios_sect = sectors; | |
1da177e4 | 602 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 603 | |
1da177e4 LT |
604 | if (capacity < lba_capacity) { |
605 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
606 | "bytes, but the drive only handles %d\n", | |
607 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
608 | floppy->blocks = floppy->block_size ? |
609 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
610 | } |
611 | return 0; | |
612 | } | |
613 | ||
948391d1 | 614 | static int idefloppy_get_sfrp_bit(ide_drive_t *drive) |
1da177e4 LT |
615 | { |
616 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 617 | struct ide_atapi_pc pc; |
1da177e4 | 618 | |
49cac39e | 619 | drive->atapi_flags &= ~IDE_AFLAG_SRFP; |
1da177e4 | 620 | |
4de4b9e1 | 621 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE); |
6e5fa7b8 | 622 | pc.flags |= PC_FLAG_SUPPRESS_ERROR; |
4de4b9e1 | 623 | |
2ac07d92 | 624 | if (ide_queue_pc_tail(drive, floppy->disk, &pc)) |
1da177e4 | 625 | return 1; |
1da177e4 | 626 | |
49cac39e BZ |
627 | if (pc.buf[8 + 2] & 0x40) |
628 | drive->atapi_flags |= IDE_AFLAG_SRFP; | |
629 | ||
e3faa248 | 630 | return 0; |
1da177e4 LT |
631 | } |
632 | ||
633 | /* | |
194ec0c0 BP |
634 | * Determine if a media is present in the floppy drive, and if so, its LBA |
635 | * capacity. | |
1da177e4 | 636 | */ |
194ec0c0 | 637 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
638 | { |
639 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2ac07d92 | 640 | struct gendisk *disk = floppy->disk; |
8e555123 | 641 | struct ide_atapi_pc pc; |
194ec0c0 BP |
642 | u8 *cap_desc; |
643 | u8 header_len, desc_cnt; | |
644 | int i, rc = 1, blocks, length; | |
645 | ||
1da177e4 LT |
646 | drive->bios_cyl = 0; |
647 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
648 | floppy->blocks = 0; |
649 | floppy->bs_factor = 1; | |
1da177e4 LT |
650 | set_capacity(floppy->disk, 0); |
651 | ||
652 | idefloppy_create_read_capacity_cmd(&pc); | |
2ac07d92 | 653 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
1da177e4 LT |
654 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); |
655 | return 1; | |
656 | } | |
8e555123 BP |
657 | header_len = pc.buf[3]; |
658 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
659 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
660 | ||
661 | for (i = 0; i < desc_cnt; i++) { | |
662 | unsigned int desc_start = 4 + i*8; | |
663 | ||
85ae98a3 HH |
664 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
665 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 BP |
666 | |
667 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
668 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 669 | |
194ec0c0 BP |
670 | if (i) |
671 | continue; | |
672 | /* | |
673 | * the code below is valid only for the 1st descriptor, ie i=0 | |
674 | */ | |
1da177e4 | 675 | |
8e555123 | 676 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
677 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
678 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 679 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 680 | /* |
1da177e4 LT |
681 | * If it is not a clik drive, break out |
682 | * (maintains previous driver behaviour) | |
683 | */ | |
684 | break; | |
685 | case CAPACITY_CURRENT: | |
686 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 687 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
688 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
689 | "sector size\n", drive->name, | |
690 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
691 | memcpy(&floppy->cap_desc, cap_desc, 8); |
692 | ||
1da177e4 LT |
693 | if (!length || length % 512) { |
694 | printk(KERN_NOTICE "%s: %d bytes block size " | |
695 | "not supported\n", drive->name, length); | |
696 | } else { | |
194ec0c0 BP |
697 | floppy->blocks = blocks; |
698 | floppy->block_size = length; | |
699 | floppy->bs_factor = length / 512; | |
700 | if (floppy->bs_factor != 1) | |
701 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
702 | "512 bytes block size not " |
703 | "fully supported\n", | |
704 | drive->name); | |
194ec0c0 | 705 | rc = 0; |
1da177e4 LT |
706 | } |
707 | break; | |
708 | case CAPACITY_NO_CARTRIDGE: | |
709 | /* | |
710 | * This is a KERN_ERR so it appears on screen | |
711 | * for the user to see | |
712 | */ | |
713 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
714 | break; | |
715 | case CAPACITY_INVALID: | |
716 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
717 | "in drive\n", drive->name); | |
718 | break; | |
719 | } | |
194ec0c0 | 720 | debug_log("Descriptor 0 Code: %d\n", |
8e555123 | 721 | pc.buf[desc_start + 4] & 0x03); |
1da177e4 LT |
722 | } |
723 | ||
724 | /* Clik! disk does not support get_flexible_disk_page */ | |
ea68d270 | 725 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
8e81bbba | 726 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 | 727 | |
2ac07d92 BZ |
728 | set_capacity(disk, floppy->blocks * floppy->bs_factor); |
729 | ||
1da177e4 LT |
730 | return rc; |
731 | } | |
732 | ||
733 | /* | |
194ec0c0 BP |
734 | * Obtain the list of formattable capacities. |
735 | * Very similar to ide_floppy_get_capacity, except that we push the capacity | |
736 | * descriptors to userland, instead of our own structures. | |
737 | * | |
738 | * Userland gives us the following structure: | |
739 | * | |
740 | * struct idefloppy_format_capacities { | |
741 | * int nformats; | |
742 | * struct { | |
743 | * int nblocks; | |
744 | * int blocksize; | |
745 | * } formats[]; | |
746 | * }; | |
747 | * | |
748 | * userland initializes nformats to the number of allocated formats[] records. | |
749 | * On exit we set nformats to the number of records we've actually initialized. | |
750 | */ | |
1da177e4 | 751 | |
194ec0c0 | 752 | static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
1da177e4 | 753 | { |
2ac07d92 | 754 | struct ide_floppy_obj *floppy = drive->driver_data; |
8e555123 | 755 | struct ide_atapi_pc pc; |
194ec0c0 BP |
756 | u8 header_len, desc_cnt; |
757 | int i, blocks, length, u_array_size, u_index; | |
1da177e4 LT |
758 | int __user *argp; |
759 | ||
760 | if (get_user(u_array_size, arg)) | |
e3faa248 | 761 | return -EFAULT; |
1da177e4 LT |
762 | |
763 | if (u_array_size <= 0) | |
e3faa248 | 764 | return -EINVAL; |
1da177e4 LT |
765 | |
766 | idefloppy_create_read_capacity_cmd(&pc); | |
2ac07d92 | 767 | if (ide_queue_pc_tail(drive, floppy->disk, &pc)) { |
1da177e4 | 768 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); |
e3faa248 | 769 | return -EIO; |
194ec0c0 | 770 | } |
e3faa248 | 771 | |
8e555123 | 772 | header_len = pc.buf[3]; |
194ec0c0 | 773 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
1da177e4 LT |
774 | |
775 | u_index = 0; | |
776 | argp = arg + 1; | |
777 | ||
778 | /* | |
194ec0c0 BP |
779 | * We always skip the first capacity descriptor. That's the current |
780 | * capacity. We are interested in the remaining descriptors, the | |
781 | * formattable capacities. | |
782 | */ | |
783 | for (i = 1; i < desc_cnt; i++) { | |
784 | unsigned int desc_start = 4 + i*8; | |
1da177e4 | 785 | |
1da177e4 LT |
786 | if (u_index >= u_array_size) |
787 | break; /* User-supplied buffer too small */ | |
1da177e4 | 788 | |
85ae98a3 HH |
789 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
790 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
1da177e4 LT |
791 | |
792 | if (put_user(blocks, argp)) | |
e3faa248 BZ |
793 | return -EFAULT; |
794 | ||
1da177e4 LT |
795 | ++argp; |
796 | ||
797 | if (put_user(length, argp)) | |
e3faa248 BZ |
798 | return -EFAULT; |
799 | ||
1da177e4 LT |
800 | ++argp; |
801 | ||
802 | ++u_index; | |
803 | } | |
804 | ||
805 | if (put_user(u_index, arg)) | |
e3faa248 BZ |
806 | return -EFAULT; |
807 | ||
808 | return 0; | |
1da177e4 LT |
809 | } |
810 | ||
1da177e4 | 811 | /* |
0571c7a4 BP |
812 | * Get ATAPI_FORMAT_UNIT progress indication. |
813 | * | |
814 | * Userland gives a pointer to an int. The int is set to a progress | |
815 | * indicator 0-65536, with 65536=100%. | |
816 | * | |
817 | * If the drive does not support format progress indication, we just check | |
818 | * the dsc bit, and return either 0 or 65536. | |
819 | */ | |
1da177e4 | 820 | |
d56c99e2 | 821 | static int ide_floppy_get_format_progress(ide_drive_t *drive, int __user *arg) |
1da177e4 LT |
822 | { |
823 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 824 | struct ide_atapi_pc pc; |
1da177e4 LT |
825 | int progress_indication = 0x10000; |
826 | ||
49cac39e | 827 | if (drive->atapi_flags & IDE_AFLAG_SRFP) { |
1da177e4 | 828 | idefloppy_create_request_sense_cmd(&pc); |
2ac07d92 | 829 | if (ide_queue_pc_tail(drive, floppy->disk, &pc)) |
e3faa248 | 830 | return -EIO; |
1da177e4 LT |
831 | |
832 | if (floppy->sense_key == 2 && | |
833 | floppy->asc == 4 && | |
0571c7a4 | 834 | floppy->ascq == 4) |
1da177e4 | 835 | progress_indication = floppy->progress_indication; |
0571c7a4 BP |
836 | |
837 | /* Else assume format_unit has finished, and we're at 0x10000 */ | |
1da177e4 | 838 | } else { |
b73c7ee2 | 839 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 840 | unsigned long flags; |
22c525b9 | 841 | u8 stat; |
1da177e4 LT |
842 | |
843 | local_irq_save(flags); | |
374e042c | 844 | stat = hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
845 | local_irq_restore(flags); |
846 | ||
3a7d2484 | 847 | progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000; |
1da177e4 | 848 | } |
e3faa248 | 849 | |
1da177e4 | 850 | if (put_user(progress_indication, arg)) |
e3faa248 | 851 | return -EFAULT; |
1da177e4 | 852 | |
e3faa248 | 853 | return 0; |
1da177e4 LT |
854 | } |
855 | ||
0571c7a4 | 856 | static sector_t idefloppy_capacity(ide_drive_t *drive) |
1da177e4 LT |
857 | { |
858 | idefloppy_floppy_t *floppy = drive->driver_data; | |
859 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
860 | ||
861 | return capacity; | |
862 | } | |
863 | ||
7662d046 | 864 | #ifdef CONFIG_IDE_PROC_FS |
8185d5aa BZ |
865 | ide_devset_rw(bios_cyl, 0, 1023, bios_cyl); |
866 | ide_devset_rw(bios_head, 0, 255, bios_head); | |
867 | ide_devset_rw(bios_sect, 0, 63, bios_sect); | |
868 | ||
869 | static int get_ticks(ide_drive_t *drive) | |
1da177e4 LT |
870 | { |
871 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8185d5aa BZ |
872 | return floppy->ticks; |
873 | } | |
1da177e4 | 874 | |
8185d5aa BZ |
875 | static int set_ticks(ide_drive_t *drive, int arg) |
876 | { | |
877 | idefloppy_floppy_t *floppy = drive->driver_data; | |
878 | floppy->ticks = arg; | |
879 | return 0; | |
1da177e4 | 880 | } |
8185d5aa BZ |
881 | |
882 | IDE_DEVSET(ticks, S_RW, 0, 255, get_ticks, set_ticks); | |
883 | ||
884 | static const struct ide_devset *idefloppy_settings[] = { | |
885 | &ide_devset_bios_cyl, | |
886 | &ide_devset_bios_head, | |
887 | &ide_devset_bios_sect, | |
888 | &ide_devset_ticks, | |
889 | NULL | |
890 | }; | |
7662d046 | 891 | #endif |
1da177e4 | 892 | |
0571c7a4 | 893 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
1da177e4 | 894 | { |
4dde4492 | 895 | u16 *id = drive->id; |
3ad6776c | 896 | u8 gcw[2]; |
1da177e4 | 897 | |
4dde4492 | 898 | *((u16 *)&gcw) = id[ATA_ID_CONFIG]; |
2e8a6f89 | 899 | |
2207fa5a | 900 | drive->pc_callback = ide_floppy_callback; |
3ad6776c BP |
901 | |
902 | if (((gcw[0] & 0x60) >> 5) == 1) | |
ea68d270 | 903 | drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT; |
1da177e4 | 904 | /* |
0571c7a4 BP |
905 | * We used to check revisions here. At this point however I'm giving up. |
906 | * Just assume they are all broken, its easier. | |
1da177e4 | 907 | * |
0571c7a4 BP |
908 | * The actual reason for the workarounds was likely a driver bug after |
909 | * all rather than a firmware bug, and the workaround below used to hide | |
910 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
911 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 912 | */ |
4dde4492 | 913 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
ea68d270 | 914 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 LT |
915 | /* This value will be visible in the /proc/ide/hdx/settings */ |
916 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
917 | blk_queue_max_sectors(drive->queue, 64); | |
918 | } | |
919 | ||
920 | /* | |
0571c7a4 BP |
921 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
922 | * nasty clicking noises without it, so please don't remove this. | |
923 | */ | |
4dde4492 | 924 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
1da177e4 | 925 | blk_queue_max_sectors(drive->queue, 64); |
ea68d270 | 926 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
1da177e4 LT |
927 | } |
928 | ||
194ec0c0 | 929 | (void) ide_floppy_get_capacity(drive); |
1e874f44 BZ |
930 | |
931 | ide_proc_register_driver(drive, floppy->driver); | |
1da177e4 LT |
932 | } |
933 | ||
4031bbe4 | 934 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
935 | { |
936 | idefloppy_floppy_t *floppy = drive->driver_data; | |
937 | struct gendisk *g = floppy->disk; | |
938 | ||
7662d046 | 939 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
940 | |
941 | del_gendisk(g); | |
942 | ||
943 | ide_floppy_put(floppy); | |
1da177e4 LT |
944 | } |
945 | ||
9a24b63d | 946 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 LT |
947 | { |
948 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
949 | ide_drive_t *drive = floppy->drive; | |
950 | struct gendisk *g = floppy->disk; | |
951 | ||
952 | drive->driver_data = NULL; | |
953 | g->private_data = NULL; | |
954 | put_disk(g); | |
955 | kfree(floppy); | |
956 | } | |
957 | ||
ecfd80e4 | 958 | #ifdef CONFIG_IDE_PROC_FS |
0571c7a4 BP |
959 | static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, |
960 | int count, int *eof, void *data) | |
1da177e4 LT |
961 | { |
962 | ide_drive_t*drive = (ide_drive_t *)data; | |
963 | int len; | |
964 | ||
0571c7a4 BP |
965 | len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); |
966 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
967 | } |
968 | ||
969 | static ide_proc_entry_t idefloppy_proc[] = { | |
0571c7a4 BP |
970 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
971 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1da177e4 LT |
972 | { NULL, 0, NULL, NULL } |
973 | }; | |
ecfd80e4 | 974 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 975 | |
4031bbe4 | 976 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 977 | |
1da177e4 | 978 | static ide_driver_t idefloppy_driver = { |
8604affd | 979 | .gen_driver = { |
4ef3b8f4 | 980 | .owner = THIS_MODULE, |
8604affd BZ |
981 | .name = "ide-floppy", |
982 | .bus = &ide_bus_type, | |
8604affd | 983 | }, |
4031bbe4 RK |
984 | .probe = ide_floppy_probe, |
985 | .remove = ide_floppy_remove, | |
1da177e4 LT |
986 | .version = IDEFLOPPY_VERSION, |
987 | .media = ide_floppy, | |
1da177e4 | 988 | .do_request = idefloppy_do_request, |
c2b2b293 | 989 | .end_request = idefloppy_end_request, |
1da177e4 | 990 | .error = __ide_error, |
7662d046 | 991 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 992 | .proc = idefloppy_proc, |
8185d5aa | 993 | .settings = idefloppy_settings, |
7662d046 | 994 | #endif |
1da177e4 LT |
995 | }; |
996 | ||
e996fc8a BZ |
997 | static void ide_floppy_set_media_lock(ide_drive_t *drive, int on) |
998 | { | |
2ac07d92 | 999 | struct ide_floppy_obj *floppy = drive->driver_data; |
e996fc8a BZ |
1000 | struct ide_atapi_pc pc; |
1001 | ||
1002 | /* IOMEGA Clik! drives do not support lock/unlock commands */ | |
1003 | if ((drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE) == 0) { | |
1004 | idefloppy_create_prevent_cmd(&pc, on); | |
2ac07d92 | 1005 | (void)ide_queue_pc_tail(drive, floppy->disk, &pc); |
e996fc8a BZ |
1006 | } |
1007 | } | |
1008 | ||
1da177e4 LT |
1009 | static int idefloppy_open(struct inode *inode, struct file *filp) |
1010 | { | |
1011 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1012 | struct ide_floppy_obj *floppy; | |
1013 | ide_drive_t *drive; | |
8e555123 | 1014 | struct ide_atapi_pc pc; |
1da177e4 LT |
1015 | int ret = 0; |
1016 | ||
bcc77d9c | 1017 | debug_log("Reached %s\n", __func__); |
1da177e4 | 1018 | |
0571c7a4 BP |
1019 | floppy = ide_floppy_get(disk); |
1020 | if (!floppy) | |
1da177e4 LT |
1021 | return -ENXIO; |
1022 | ||
1023 | drive = floppy->drive; | |
1024 | ||
c94964a4 | 1025 | floppy->openers++; |
1da177e4 | 1026 | |
c94964a4 | 1027 | if (floppy->openers == 1) { |
ea68d270 | 1028 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
1029 | /* Just in case */ |
1030 | ||
7bf7420a | 1031 | ide_init_pc(&pc); |
c96a7df8 BP |
1032 | pc.c[0] = GPCMD_TEST_UNIT_READY; |
1033 | ||
2ac07d92 | 1034 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
1da177e4 | 1035 | idefloppy_create_start_stop_cmd(&pc, 1); |
2ac07d92 | 1036 | (void)ide_queue_pc_tail(drive, disk, &pc); |
1da177e4 LT |
1037 | } |
1038 | ||
194ec0c0 | 1039 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
1040 | && (filp->f_flags & O_NDELAY) == 0 |
1041 | /* | |
0571c7a4 BP |
1042 | * Allow O_NDELAY to open a drive without a disk, or with an |
1043 | * unreadable disk, so that we can get the format capacity | |
1044 | * of the drive or begin the format - Sam | |
1045 | */ | |
1da177e4 | 1046 | ) { |
1da177e4 LT |
1047 | ret = -EIO; |
1048 | goto out_put_floppy; | |
1049 | } | |
1050 | ||
49cac39e | 1051 | if ((drive->atapi_flags & IDE_AFLAG_WP) && (filp->f_mode & 2)) { |
1da177e4 LT |
1052 | ret = -EROFS; |
1053 | goto out_put_floppy; | |
1054 | } | |
e996fc8a | 1055 | |
ea68d270 | 1056 | drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED; |
e996fc8a | 1057 | ide_floppy_set_media_lock(drive, 1); |
1da177e4 | 1058 | check_disk_change(inode->i_bdev); |
ea68d270 | 1059 | } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
1060 | ret = -EBUSY; |
1061 | goto out_put_floppy; | |
1062 | } | |
1063 | return 0; | |
1064 | ||
1065 | out_put_floppy: | |
c94964a4 | 1066 | floppy->openers--; |
1da177e4 LT |
1067 | ide_floppy_put(floppy); |
1068 | return ret; | |
1069 | } | |
1070 | ||
1071 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
1072 | { | |
1073 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1074 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1075 | ide_drive_t *drive = floppy->drive; | |
bcc77d9c BP |
1076 | |
1077 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 1078 | |
c94964a4 | 1079 | if (floppy->openers == 1) { |
e996fc8a | 1080 | ide_floppy_set_media_lock(drive, 0); |
ea68d270 | 1081 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 1082 | } |
c94964a4 BZ |
1083 | |
1084 | floppy->openers--; | |
1da177e4 LT |
1085 | |
1086 | ide_floppy_put(floppy); | |
1087 | ||
1088 | return 0; | |
1089 | } | |
1090 | ||
a885c8c4 CH |
1091 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1092 | { | |
1093 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1094 | ide_drive_t *drive = floppy->drive; | |
1095 | ||
1096 | geo->heads = drive->bios_head; | |
1097 | geo->sectors = drive->bios_sect; | |
1098 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1099 | return 0; | |
1100 | } | |
1101 | ||
ea68d270 BP |
1102 | static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc, |
1103 | unsigned long arg, unsigned int cmd) | |
20bf7bda | 1104 | { |
ea68d270 | 1105 | idefloppy_floppy_t *floppy = drive->driver_data; |
e996fc8a | 1106 | int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0; |
ea68d270 | 1107 | |
20bf7bda BP |
1108 | if (floppy->openers > 1) |
1109 | return -EBUSY; | |
1110 | ||
e996fc8a | 1111 | ide_floppy_set_media_lock(drive, prevent); |
20bf7bda BP |
1112 | |
1113 | if (cmd == CDROMEJECT) { | |
1114 | idefloppy_create_start_stop_cmd(pc, 2); | |
2ac07d92 | 1115 | (void)ide_queue_pc_tail(drive, floppy->disk, pc); |
20bf7bda BP |
1116 | } |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | ||
d56c99e2 | 1121 | static int ide_floppy_format_unit(ide_drive_t *drive, int __user *arg) |
20bf7bda | 1122 | { |
d56c99e2 | 1123 | idefloppy_floppy_t *floppy = drive->driver_data; |
8e555123 | 1124 | struct ide_atapi_pc pc; |
ea68d270 | 1125 | int blocks, length, flags, err = 0; |
20bf7bda BP |
1126 | |
1127 | if (floppy->openers > 1) { | |
1128 | /* Don't format if someone is using the disk */ | |
ea68d270 | 1129 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1130 | return -EBUSY; |
1131 | } | |
1132 | ||
ea68d270 | 1133 | drive->atapi_flags |= IDE_AFLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1134 | |
1135 | /* | |
1136 | * Send ATAPI_FORMAT_UNIT to the drive. | |
1137 | * | |
1138 | * Userland gives us the following structure: | |
1139 | * | |
1140 | * struct idefloppy_format_command { | |
1141 | * int nblocks; | |
1142 | * int blocksize; | |
1143 | * int flags; | |
1144 | * } ; | |
1145 | * | |
1146 | * flags is a bitmask, currently, the only defined flag is: | |
1147 | * | |
1148 | * 0x01 - verify media after format. | |
1149 | */ | |
1150 | if (get_user(blocks, arg) || | |
1151 | get_user(length, arg+1) || | |
1152 | get_user(flags, arg+2)) { | |
1153 | err = -EFAULT; | |
1154 | goto out; | |
1155 | } | |
1156 | ||
ea68d270 | 1157 | (void) idefloppy_get_sfrp_bit(drive); |
20bf7bda BP |
1158 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); |
1159 | ||
2ac07d92 | 1160 | if (ide_queue_pc_tail(drive, floppy->disk, &pc)) |
20bf7bda BP |
1161 | err = -EIO; |
1162 | ||
1163 | out: | |
1164 | if (err) | |
ea68d270 | 1165 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1166 | return err; |
1167 | } | |
1168 | ||
d56c99e2 BZ |
1169 | static int ide_floppy_format_ioctl(ide_drive_t *drive, struct file *file, |
1170 | unsigned int cmd, void __user *argp) | |
1171 | { | |
1172 | switch (cmd) { | |
1173 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: | |
1174 | return 0; | |
1175 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
1176 | return ide_floppy_get_format_capacities(drive, argp); | |
1177 | case IDEFLOPPY_IOCTL_FORMAT_START: | |
1178 | if (!(file->f_mode & 2)) | |
1179 | return -EPERM; | |
1180 | return ide_floppy_format_unit(drive, (int __user *)argp); | |
1181 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: | |
1182 | return ide_floppy_get_format_progress(drive, argp); | |
1183 | default: | |
1184 | return -ENOTTY; | |
1185 | } | |
1186 | } | |
20bf7bda | 1187 | |
1da177e4 LT |
1188 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
1189 | unsigned int cmd, unsigned long arg) | |
1190 | { | |
1191 | struct block_device *bdev = inode->i_bdev; | |
1192 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1193 | ide_drive_t *drive = floppy->drive; | |
8e555123 | 1194 | struct ide_atapi_pc pc; |
1da177e4 | 1195 | void __user *argp = (void __user *)arg; |
07203f64 | 1196 | int err; |
1da177e4 | 1197 | |
d56c99e2 | 1198 | if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) |
ea68d270 | 1199 | return ide_floppy_lockdoor(drive, &pc, arg, cmd); |
1da177e4 | 1200 | |
d56c99e2 BZ |
1201 | err = ide_floppy_format_ioctl(drive, file, cmd, argp); |
1202 | if (err != -ENOTTY) | |
1203 | return err; | |
89636af2 BZ |
1204 | |
1205 | /* | |
1206 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
1207 | * and CDROM_SEND_PACKET (legacy) ioctls | |
1208 | */ | |
1209 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
1210 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
1211 | bdev->bd_disk, cmd, argp); | |
89636af2 BZ |
1212 | |
1213 | if (err == -ENOTTY) | |
1214 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1215 | ||
1216 | return err; | |
1da177e4 LT |
1217 | } |
1218 | ||
1219 | static int idefloppy_media_changed(struct gendisk *disk) | |
1220 | { | |
1221 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1222 | ide_drive_t *drive = floppy->drive; | |
6e5fa7b8 | 1223 | int ret; |
1da177e4 LT |
1224 | |
1225 | /* do not scan partitions twice if this is a removable device */ | |
1226 | if (drive->attach) { | |
1227 | drive->attach = 0; | |
1228 | return 0; | |
1229 | } | |
ea68d270 BP |
1230 | ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED); |
1231 | drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED; | |
6e5fa7b8 | 1232 | return ret; |
1da177e4 LT |
1233 | } |
1234 | ||
1235 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
1236 | { | |
1237 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1238 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | static struct block_device_operations idefloppy_ops = { | |
52d3ccf7 PC |
1243 | .owner = THIS_MODULE, |
1244 | .open = idefloppy_open, | |
1245 | .release = idefloppy_release, | |
1246 | .ioctl = idefloppy_ioctl, | |
1247 | .getgeo = idefloppy_getgeo, | |
1248 | .media_changed = idefloppy_media_changed, | |
1249 | .revalidate_disk = idefloppy_revalidate_disk | |
1da177e4 LT |
1250 | }; |
1251 | ||
4031bbe4 | 1252 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
1253 | { |
1254 | idefloppy_floppy_t *floppy; | |
1255 | struct gendisk *g; | |
1256 | ||
1257 | if (!strstr("ide-floppy", drive->driver_req)) | |
1258 | goto failed; | |
2a924662 | 1259 | |
1da177e4 LT |
1260 | if (drive->media != ide_floppy) |
1261 | goto failed; | |
2a924662 | 1262 | |
51509eec | 1263 | if (!ide_check_atapi_device(drive, DRV_NAME)) { |
0571c7a4 BP |
1264 | printk(KERN_ERR "ide-floppy: %s: not supported by this version" |
1265 | " of ide-floppy\n", drive->name); | |
1da177e4 LT |
1266 | goto failed; |
1267 | } | |
0571c7a4 BP |
1268 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
1269 | if (!floppy) { | |
1270 | printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" | |
1271 | " structure\n", drive->name); | |
1da177e4 LT |
1272 | goto failed; |
1273 | } | |
1274 | ||
1275 | g = alloc_disk(1 << PARTN_BITS); | |
1276 | if (!g) | |
1277 | goto out_free_floppy; | |
1278 | ||
1279 | ide_init_disk(g, drive); | |
1280 | ||
1da177e4 LT |
1281 | kref_init(&floppy->kref); |
1282 | ||
1283 | floppy->drive = drive; | |
1284 | floppy->driver = &idefloppy_driver; | |
1285 | floppy->disk = g; | |
1286 | ||
1287 | g->private_data = &floppy->driver; | |
1288 | ||
1289 | drive->driver_data = floppy; | |
1290 | ||
0571c7a4 | 1291 | idefloppy_setup(drive, floppy); |
8604affd | 1292 | |
1da177e4 LT |
1293 | g->minors = 1 << PARTN_BITS; |
1294 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
1295 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
1296 | g->fops = &idefloppy_ops; | |
1297 | drive->attach = 1; | |
1298 | add_disk(g); | |
1299 | return 0; | |
1300 | ||
1da177e4 LT |
1301 | out_free_floppy: |
1302 | kfree(floppy); | |
1303 | failed: | |
8604affd | 1304 | return -ENODEV; |
1da177e4 LT |
1305 | } |
1306 | ||
0571c7a4 | 1307 | static void __exit idefloppy_exit(void) |
1da177e4 | 1308 | { |
8604affd | 1309 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1310 | } |
1311 | ||
17514e8a | 1312 | static int __init idefloppy_init(void) |
1da177e4 LT |
1313 | { |
1314 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 1315 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1316 | } |
1317 | ||
263756ec | 1318 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
1319 | module_init(idefloppy_init); |
1320 | module_exit(idefloppy_exit); | |
1321 | MODULE_LICENSE("GPL"); | |
0571c7a4 BP |
1322 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
1323 |