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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 | /* Write protect */ |
114 | int wp; | |
115 | /* Supports format progress report */ | |
116 | int srfp; | |
1da177e4 LT |
117 | } idefloppy_floppy_t; |
118 | ||
c40d3d38 | 119 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 | 120 | |
0571c7a4 | 121 | /* IOCTLs used in low-level formatting. */ |
1da177e4 LT |
122 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 |
123 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 | |
124 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 | |
125 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 | |
126 | ||
0571c7a4 | 127 | /* Error code returned in rq->errors to the higher part of the driver. */ |
1da177e4 LT |
128 | #define IDEFLOPPY_ERROR_GENERAL 101 |
129 | ||
1da177e4 | 130 | /* |
948391d1 BP |
131 | * Pages of the SELECT SENSE / MODE SENSE packet commands. |
132 | * See SFF-8070i spec. | |
1da177e4 LT |
133 | */ |
134 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b | |
135 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 | |
136 | ||
cf8b8975 | 137 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
138 | |
139 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
140 | ||
141 | #define ide_floppy_g(disk) \ | |
142 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
143 | ||
08da591e BZ |
144 | static void idefloppy_cleanup_obj(struct kref *); |
145 | ||
1da177e4 LT |
146 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) |
147 | { | |
148 | struct ide_floppy_obj *floppy = NULL; | |
149 | ||
cf8b8975 | 150 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 | 151 | floppy = ide_floppy_g(disk); |
08da591e | 152 | if (floppy) { |
d3e33ff5 | 153 | if (ide_device_get(floppy->drive)) |
08da591e | 154 | floppy = NULL; |
d3e33ff5 BZ |
155 | else |
156 | kref_get(&floppy->kref); | |
08da591e | 157 | } |
cf8b8975 | 158 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
159 | return floppy; |
160 | } | |
161 | ||
1da177e4 LT |
162 | static void ide_floppy_put(struct ide_floppy_obj *floppy) |
163 | { | |
d3e33ff5 BZ |
164 | ide_drive_t *drive = floppy->drive; |
165 | ||
cf8b8975 | 166 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 167 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
d3e33ff5 | 168 | ide_device_put(drive); |
cf8b8975 | 169 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
170 | } |
171 | ||
1da177e4 | 172 | /* |
0571c7a4 BP |
173 | * Used to finish servicing a request. For read/write requests, we will call |
174 | * ide_end_request to pass to the next buffer. | |
1da177e4 | 175 | */ |
c2b2b293 | 176 | static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
1da177e4 LT |
177 | { |
178 | idefloppy_floppy_t *floppy = drive->driver_data; | |
179 | struct request *rq = HWGROUP(drive)->rq; | |
180 | int error; | |
181 | ||
bcc77d9c | 182 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
183 | |
184 | switch (uptodate) { | |
0571c7a4 BP |
185 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
186 | case 1: error = 0; break; | |
187 | default: error = uptodate; | |
1da177e4 LT |
188 | } |
189 | if (error) | |
190 | floppy->failed_pc = NULL; | |
191 | /* Why does this happen? */ | |
192 | if (!rq) | |
193 | return 0; | |
4aff5e23 | 194 | if (!blk_special_request(rq)) { |
1da177e4 LT |
195 | /* our real local end request function */ |
196 | ide_end_request(drive, uptodate, nsecs); | |
197 | return 0; | |
198 | } | |
199 | rq->errors = error; | |
200 | /* fixme: need to move this local also */ | |
201 | ide_end_drive_cmd(drive, 0, 0); | |
202 | return 0; | |
203 | } | |
204 | ||
8e555123 BP |
205 | static void idefloppy_update_buffers(ide_drive_t *drive, |
206 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
207 | { |
208 | struct request *rq = pc->rq; | |
209 | struct bio *bio = rq->bio; | |
210 | ||
211 | while ((bio = rq->bio) != NULL) | |
c2b2b293 | 212 | idefloppy_end_request(drive, 1, 0); |
1da177e4 LT |
213 | } |
214 | ||
215 | /* | |
0571c7a4 BP |
216 | * Generate a new packet command request in front of the request queue, before |
217 | * the current request so that it will be processed immediately, on the next | |
218 | * pass through the driver. | |
1da177e4 | 219 | */ |
8e555123 | 220 | static void idefloppy_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc, |
0571c7a4 | 221 | struct request *rq) |
1da177e4 LT |
222 | { |
223 | struct ide_floppy_obj *floppy = drive->driver_data; | |
224 | ||
124cafc5 | 225 | blk_rq_init(NULL, rq); |
1da177e4 | 226 | rq->buffer = (char *) pc; |
4aff5e23 | 227 | rq->cmd_type = REQ_TYPE_SPECIAL; |
e8a96aa7 | 228 | rq->cmd_flags |= REQ_PREEMPT; |
1da177e4 | 229 | rq->rq_disk = floppy->disk; |
20cd93be | 230 | memcpy(rq->cmd, pc->c, 12); |
63f5abb0 | 231 | ide_do_drive_cmd(drive, rq); |
1da177e4 LT |
232 | } |
233 | ||
81f49382 | 234 | static void ide_floppy_callback(ide_drive_t *drive) |
1da177e4 LT |
235 | { |
236 | idefloppy_floppy_t *floppy = drive->driver_data; | |
81f49382 BP |
237 | struct ide_atapi_pc *pc = floppy->pc; |
238 | int uptodate = pc->error ? 0 : 1; | |
1da177e4 | 239 | |
bcc77d9c BP |
240 | debug_log("Reached %s\n", __func__); |
241 | ||
dd2e9a03 BZ |
242 | if (floppy->failed_pc == pc) |
243 | floppy->failed_pc = NULL; | |
244 | ||
81f49382 BP |
245 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
246 | (pc->rq && blk_pc_request(pc->rq))) | |
247 | uptodate = 1; /* FIXME */ | |
248 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
249 | u8 *buf = floppy->pc->buf; | |
a6ff2d3b | 250 | |
81f49382 BP |
251 | if (!pc->error) { |
252 | floppy->sense_key = buf[2] & 0x0F; | |
253 | floppy->asc = buf[12]; | |
254 | floppy->ascq = buf[13]; | |
255 | floppy->progress_indication = buf[15] & 0x80 ? | |
256 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 257 | |
81f49382 BP |
258 | if (floppy->failed_pc) |
259 | debug_log("pc = %x, ", floppy->failed_pc->c[0]); | |
bcc77d9c | 260 | |
81f49382 BP |
261 | debug_log("sense key = %x, asc = %x, ascq = %x\n", |
262 | floppy->sense_key, floppy->asc, floppy->ascq); | |
263 | } else | |
264 | printk(KERN_ERR "Error in REQUEST SENSE itself - " | |
265 | "Aborting request!\n"); | |
266 | } | |
1da177e4 | 267 | |
81f49382 | 268 | idefloppy_end_request(drive, uptodate, 0); |
1da177e4 LT |
269 | } |
270 | ||
8e555123 | 271 | static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 272 | { |
7bf7420a | 273 | ide_init_pc(pc); |
30d67099 | 274 | pc->c[0] = GPCMD_REQUEST_SENSE; |
1da177e4 | 275 | pc->c[4] = 255; |
8e555123 | 276 | pc->req_xfer = 18; |
1da177e4 LT |
277 | } |
278 | ||
279 | /* | |
0571c7a4 BP |
280 | * Called when an error was detected during the last packet command. We queue a |
281 | * request sense packet command in the head of the request list. | |
1da177e4 | 282 | */ |
0571c7a4 | 283 | static void idefloppy_retry_pc(ide_drive_t *drive) |
1da177e4 | 284 | { |
394a4c21 BZ |
285 | struct ide_floppy_obj *floppy = drive->driver_data; |
286 | struct request *rq = &floppy->request_sense_rq; | |
2e8a6f89 | 287 | struct ide_atapi_pc *pc = &floppy->request_sense_pc; |
1da177e4 | 288 | |
64a57fe4 | 289 | (void)ide_read_error(drive); |
1da177e4 LT |
290 | idefloppy_create_request_sense_cmd(pc); |
291 | idefloppy_queue_pc_head(drive, pc, rq); | |
292 | } | |
293 | ||
0eea6458 | 294 | /* The usual interrupt handler called during a packet command. */ |
52d3ccf7 | 295 | static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) |
1da177e4 LT |
296 | { |
297 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1da177e4 | 298 | |
646c0cb6 BZ |
299 | return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr, |
300 | IDEFLOPPY_WAIT_CMD, NULL, idefloppy_update_buffers, | |
acaa0f5f | 301 | idefloppy_retry_pc, NULL, ide_io_buffers); |
1da177e4 LT |
302 | } |
303 | ||
1da177e4 | 304 | /* |
0571c7a4 BP |
305 | * What we have here is a classic case of a top half / bottom half interrupt |
306 | * service routine. In interrupt mode, the device sends an interrupt to signal | |
307 | * that it is ready to receive a packet. However, we need to delay about 2-3 | |
308 | * ticks before issuing the packet or we gets in trouble. | |
1da177e4 | 309 | */ |
cbbc4e81 | 310 | static int idefloppy_transfer_pc(ide_drive_t *drive) |
1da177e4 LT |
311 | { |
312 | idefloppy_floppy_t *floppy = drive->driver_data; | |
313 | ||
314 | /* Send the actual packet */ | |
374e042c | 315 | drive->hwif->tp_ops->output_data(drive, NULL, floppy->pc->c, 12); |
9567b349 | 316 | |
1da177e4 LT |
317 | /* Timeout for the packet command */ |
318 | return IDEFLOPPY_WAIT_CMD; | |
319 | } | |
320 | ||
cbbc4e81 BP |
321 | |
322 | /* | |
323 | * Called as an interrupt (or directly). When the device says it's ready for a | |
324 | * packet, we schedule the packet transfer to occur about 2-3 ticks later in | |
325 | * transfer_pc. | |
326 | */ | |
327 | static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive) | |
1da177e4 LT |
328 | { |
329 | idefloppy_floppy_t *floppy = drive->driver_data; | |
6ffb6641 | 330 | struct ide_atapi_pc *pc = floppy->pc; |
0b2eea4c BZ |
331 | ide_expiry_t *expiry; |
332 | unsigned int timeout; | |
1da177e4 | 333 | |
0571c7a4 | 334 | /* |
1da177e4 LT |
335 | * The following delay solves a problem with ATAPI Zip 100 drives |
336 | * where the Busy flag was apparently being deasserted before the | |
337 | * unit was ready to receive data. This was happening on a | |
338 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
339 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
340 | * used until after the packet is moved in about 50 msec. | |
341 | */ | |
ea68d270 | 342 | if (drive->atapi_flags & IDE_AFLAG_ZIP_DRIVE) { |
0b2eea4c | 343 | timeout = floppy->ticks; |
cbbc4e81 | 344 | expiry = &idefloppy_transfer_pc; |
0b2eea4c BZ |
345 | } else { |
346 | timeout = IDEFLOPPY_WAIT_CMD; | |
347 | expiry = NULL; | |
348 | } | |
349 | ||
594c16d8 | 350 | return ide_transfer_pc(drive, pc, idefloppy_pc_intr, timeout, expiry); |
1da177e4 LT |
351 | } |
352 | ||
d652c138 | 353 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
8e555123 | 354 | struct ide_atapi_pc *pc) |
1da177e4 | 355 | { |
d652c138 | 356 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
357 | if (floppy->sense_key == 0x02 && |
358 | floppy->asc == 0x3a && | |
359 | floppy->ascq == 0x00) | |
d652c138 BP |
360 | return; |
361 | ||
362 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
363 | "asc = %2x, ascq = %2x\n", | |
364 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
365 | floppy->asc, floppy->ascq); | |
366 | ||
1da177e4 LT |
367 | } |
368 | ||
0571c7a4 | 369 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 370 | struct ide_atapi_pc *pc) |
1da177e4 LT |
371 | { |
372 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1da177e4 | 373 | |
1da177e4 | 374 | if (floppy->failed_pc == NULL && |
30d67099 | 375 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 LT |
376 | floppy->failed_pc = pc; |
377 | /* Set the current packet command */ | |
378 | floppy->pc = pc; | |
379 | ||
757ced89 | 380 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 381 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
382 | ide_floppy_report_error(floppy, pc); |
383 | /* Giving up */ | |
384 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
385 | ||
1da177e4 | 386 | floppy->failed_pc = NULL; |
2207fa5a | 387 | drive->pc_callback(drive); |
1da177e4 LT |
388 | return ide_stopped; |
389 | } | |
390 | ||
bcc77d9c | 391 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
392 | |
393 | pc->retries++; | |
1da177e4 | 394 | |
cbbc4e81 | 395 | return ide_issue_pc(drive, pc, idefloppy_start_pc_transfer, |
6bf1641c | 396 | IDEFLOPPY_WAIT_CMD, NULL); |
1da177e4 LT |
397 | } |
398 | ||
8e555123 | 399 | static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent) |
1da177e4 | 400 | { |
bcc77d9c | 401 | debug_log("creating prevent removal command, prevent = %d\n", prevent); |
1da177e4 | 402 | |
7bf7420a | 403 | ide_init_pc(pc); |
30d67099 | 404 | pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
1da177e4 LT |
405 | pc->c[4] = prevent; |
406 | } | |
407 | ||
8e555123 | 408 | static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 409 | { |
7bf7420a | 410 | ide_init_pc(pc); |
30d67099 | 411 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
412 | pc->c[7] = 255; |
413 | pc->c[8] = 255; | |
8e555123 | 414 | pc->req_xfer = 255; |
1da177e4 LT |
415 | } |
416 | ||
8e555123 BP |
417 | static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b, |
418 | int l, int flags) | |
1da177e4 | 419 | { |
7bf7420a | 420 | ide_init_pc(pc); |
30d67099 | 421 | pc->c[0] = GPCMD_FORMAT_UNIT; |
1da177e4 LT |
422 | pc->c[1] = 0x17; |
423 | ||
8e555123 BP |
424 | memset(pc->buf, 0, 12); |
425 | pc->buf[1] = 0xA2; | |
1da177e4 LT |
426 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ |
427 | ||
428 | if (flags & 1) /* Verify bit on... */ | |
8e555123 BP |
429 | pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */ |
430 | pc->buf[3] = 8; | |
1da177e4 | 431 | |
8e555123 BP |
432 | put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4])); |
433 | put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8])); | |
434 | pc->buf_size = 12; | |
6e5fa7b8 | 435 | pc->flags |= PC_FLAG_WRITING; |
1da177e4 LT |
436 | } |
437 | ||
0571c7a4 | 438 | /* A mode sense command is used to "sense" floppy parameters. */ |
8e555123 | 439 | static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, |
4de4b9e1 | 440 | u8 page_code) |
1da177e4 | 441 | { |
24a5d703 | 442 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 443 | |
7bf7420a | 444 | ide_init_pc(pc); |
30d67099 | 445 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 | 446 | pc->c[1] = 0; |
4de4b9e1 | 447 | pc->c[2] = page_code; |
1da177e4 LT |
448 | |
449 | switch (page_code) { | |
0571c7a4 BP |
450 | case IDEFLOPPY_CAPABILITIES_PAGE: |
451 | length += 12; | |
452 | break; | |
453 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
454 | length += 32; | |
455 | break; | |
456 | default: | |
457 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1da177e4 LT |
458 | "in create_mode_sense_cmd\n"); |
459 | } | |
8f622430 | 460 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 461 | pc->req_xfer = length; |
1da177e4 LT |
462 | } |
463 | ||
8e555123 | 464 | static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start) |
1da177e4 | 465 | { |
7bf7420a | 466 | ide_init_pc(pc); |
30d67099 | 467 | pc->c[0] = GPCMD_START_STOP_UNIT; |
1da177e4 LT |
468 | pc->c[4] = start; |
469 | } | |
470 | ||
ae7e8ddc | 471 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 472 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 473 | unsigned long sector) |
1da177e4 LT |
474 | { |
475 | int block = sector / floppy->bs_factor; | |
476 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
477 | int cmd = rq_data_dir(rq); | |
478 | ||
ae7e8ddc | 479 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
480 | block, blocks); |
481 | ||
7bf7420a | 482 | ide_init_pc(pc); |
ae7e8ddc BP |
483 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
484 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 485 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 486 | |
20cd93be BP |
487 | memcpy(rq->cmd, pc->c, 12); |
488 | ||
1da177e4 | 489 | pc->rq = rq; |
b98b3409 | 490 | pc->b_count = 0; |
4aff5e23 | 491 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 492 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
493 | pc->buf = NULL; |
494 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
5e331095 | 495 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
496 | } |
497 | ||
0571c7a4 | 498 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 499 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 500 | { |
7bf7420a | 501 | ide_init_pc(pc); |
1da177e4 | 502 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf | 503 | pc->rq = rq; |
b98b3409 | 504 | pc->b_count = 0; |
3d6392cf | 505 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
6e5fa7b8 | 506 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 507 | pc->buf = rq->data; |
3d6392cf | 508 | if (rq->bio) |
5e331095 | 509 | pc->flags |= PC_FLAG_DMA_OK; |
3d6392cf JA |
510 | /* |
511 | * possibly problematic, doesn't look like ide-floppy correctly | |
512 | * handled scattered requests if dma fails... | |
513 | */ | |
8e555123 | 514 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
515 | } |
516 | ||
0571c7a4 BP |
517 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
518 | struct request *rq, sector_t block_s) | |
1da177e4 LT |
519 | { |
520 | idefloppy_floppy_t *floppy = drive->driver_data; | |
b98b3409 | 521 | ide_hwif_t *hwif = drive->hwif; |
8e555123 | 522 | struct ide_atapi_pc *pc; |
1da177e4 LT |
523 | unsigned long block = (unsigned long)block_s; |
524 | ||
b98b3409 BP |
525 | debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n", |
526 | __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?", | |
527 | rq->cmd[0], rq->cmd_type, rq->errors); | |
528 | ||
529 | debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n", | |
530 | __func__, (long)rq->sector, rq->nr_sectors, | |
531 | rq->current_nr_sectors); | |
1da177e4 LT |
532 | |
533 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
534 | if (floppy->failed_pc) |
535 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
536 | else |
537 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
538 | drive->name); | |
c2b2b293 | 539 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
540 | return ide_stopped; |
541 | } | |
4aff5e23 | 542 | if (blk_fs_request(rq)) { |
1da177e4 LT |
543 | if (((long)rq->sector % floppy->bs_factor) || |
544 | (rq->nr_sectors % floppy->bs_factor)) { | |
0571c7a4 BP |
545 | printk(KERN_ERR "%s: unsupported r/w request size\n", |
546 | drive->name); | |
c2b2b293 | 547 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
548 | return ide_stopped; |
549 | } | |
2e8a6f89 | 550 | pc = &floppy->queued_pc; |
1da177e4 | 551 | idefloppy_create_rw_cmd(floppy, pc, rq, block); |
4aff5e23 | 552 | } else if (blk_special_request(rq)) { |
8e555123 | 553 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 554 | } else if (blk_pc_request(rq)) { |
2e8a6f89 | 555 | pc = &floppy->queued_pc; |
3d6392cf | 556 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
557 | } else { |
558 | blk_dump_rq_flags(rq, | |
559 | "ide-floppy: unsupported command in queue"); | |
c2b2b293 | 560 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
561 | return ide_stopped; |
562 | } | |
563 | ||
b98b3409 BP |
564 | ide_init_sg_cmd(drive, rq); |
565 | ide_map_sg(drive, rq); | |
566 | ||
567 | pc->sg = hwif->sg_table; | |
568 | pc->sg_cnt = hwif->sg_nents; | |
569 | ||
1da177e4 | 570 | pc->rq = rq; |
5d41893c | 571 | |
1da177e4 LT |
572 | return idefloppy_issue_pc(drive, pc); |
573 | } | |
574 | ||
575 | /* | |
0571c7a4 BP |
576 | * Add a special packet command request to the tail of the request queue, |
577 | * and wait for it to be serviced. | |
1da177e4 | 578 | */ |
8e555123 | 579 | static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc) |
1da177e4 LT |
580 | { |
581 | struct ide_floppy_obj *floppy = drive->driver_data; | |
6fe16238 FT |
582 | struct request *rq; |
583 | int error; | |
1da177e4 | 584 | |
6fe16238 FT |
585 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
586 | rq->buffer = (char *) pc; | |
587 | rq->cmd_type = REQ_TYPE_SPECIAL; | |
20cd93be | 588 | memcpy(rq->cmd, pc->c, 12); |
6fe16238 FT |
589 | error = blk_execute_rq(drive->queue, floppy->disk, rq, 0); |
590 | blk_put_request(rq); | |
1da177e4 | 591 | |
6fe16238 | 592 | return error; |
1da177e4 LT |
593 | } |
594 | ||
595 | /* | |
8e81bbba BP |
596 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
597 | * parameters and use the LBA parameters instead. | |
1da177e4 | 598 | */ |
8e81bbba | 599 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
600 | { |
601 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 602 | struct ide_atapi_pc pc; |
8e81bbba | 603 | u8 *page; |
1da177e4 | 604 | int capacity, lba_capacity; |
8e81bbba BP |
605 | u16 transfer_rate, sector_size, cyls, rpm; |
606 | u8 heads, sectors; | |
1da177e4 | 607 | |
4de4b9e1 | 608 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
8e81bbba BP |
609 | |
610 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
611 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" | |
612 | " parameters\n"); | |
1da177e4 LT |
613 | return 1; |
614 | } | |
8e555123 | 615 | floppy->wp = !!(pc.buf[3] & 0x80); |
1da177e4 | 616 | set_disk_ro(floppy->disk, floppy->wp); |
8e555123 | 617 | page = &pc.buf[8]; |
8e81bbba | 618 | |
85ae98a3 HH |
619 | transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]); |
620 | sector_size = be16_to_cpup((__be16 *)&pc.buf[8 + 6]); | |
621 | cyls = be16_to_cpup((__be16 *)&pc.buf[8 + 8]); | |
622 | rpm = be16_to_cpup((__be16 *)&pc.buf[8 + 28]); | |
8e555123 BP |
623 | heads = pc.buf[8 + 4]; |
624 | sectors = pc.buf[8 + 5]; | |
8e81bbba BP |
625 | |
626 | capacity = cyls * heads * sectors * sector_size; | |
627 | ||
628 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
629 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
630 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
631 | drive->name, capacity / 1024, cyls, heads, |
632 | sectors, transfer_rate / 8, sector_size, rpm); | |
633 | ||
634 | memcpy(&floppy->flexible_disk_page, page, 32); | |
635 | drive->bios_cyl = cyls; | |
636 | drive->bios_head = heads; | |
637 | drive->bios_sect = sectors; | |
1da177e4 | 638 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 639 | |
1da177e4 LT |
640 | if (capacity < lba_capacity) { |
641 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
642 | "bytes, but the drive only handles %d\n", | |
643 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
644 | floppy->blocks = floppy->block_size ? |
645 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
646 | } |
647 | return 0; | |
648 | } | |
649 | ||
948391d1 | 650 | static int idefloppy_get_sfrp_bit(ide_drive_t *drive) |
1da177e4 LT |
651 | { |
652 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 653 | struct ide_atapi_pc pc; |
1da177e4 LT |
654 | |
655 | floppy->srfp = 0; | |
1da177e4 | 656 | |
4de4b9e1 | 657 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE); |
6e5fa7b8 | 658 | pc.flags |= PC_FLAG_SUPPRESS_ERROR; |
4de4b9e1 | 659 | |
948391d1 | 660 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 661 | return 1; |
1da177e4 | 662 | |
8e555123 | 663 | floppy->srfp = pc.buf[8 + 2] & 0x40; |
e3faa248 | 664 | return 0; |
1da177e4 LT |
665 | } |
666 | ||
667 | /* | |
194ec0c0 BP |
668 | * Determine if a media is present in the floppy drive, and if so, its LBA |
669 | * capacity. | |
1da177e4 | 670 | */ |
194ec0c0 | 671 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
672 | { |
673 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 674 | struct ide_atapi_pc pc; |
194ec0c0 BP |
675 | u8 *cap_desc; |
676 | u8 header_len, desc_cnt; | |
677 | int i, rc = 1, blocks, length; | |
678 | ||
1da177e4 LT |
679 | drive->bios_cyl = 0; |
680 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
681 | floppy->blocks = 0; |
682 | floppy->bs_factor = 1; | |
1da177e4 LT |
683 | set_capacity(floppy->disk, 0); |
684 | ||
685 | idefloppy_create_read_capacity_cmd(&pc); | |
686 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
687 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
688 | return 1; | |
689 | } | |
8e555123 BP |
690 | header_len = pc.buf[3]; |
691 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
692 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
693 | ||
694 | for (i = 0; i < desc_cnt; i++) { | |
695 | unsigned int desc_start = 4 + i*8; | |
696 | ||
85ae98a3 HH |
697 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
698 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 BP |
699 | |
700 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
701 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 702 | |
194ec0c0 BP |
703 | if (i) |
704 | continue; | |
705 | /* | |
706 | * the code below is valid only for the 1st descriptor, ie i=0 | |
707 | */ | |
1da177e4 | 708 | |
8e555123 | 709 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
710 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
711 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 712 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 713 | /* |
1da177e4 LT |
714 | * If it is not a clik drive, break out |
715 | * (maintains previous driver behaviour) | |
716 | */ | |
717 | break; | |
718 | case CAPACITY_CURRENT: | |
719 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 720 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
721 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
722 | "sector size\n", drive->name, | |
723 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
724 | memcpy(&floppy->cap_desc, cap_desc, 8); |
725 | ||
1da177e4 LT |
726 | if (!length || length % 512) { |
727 | printk(KERN_NOTICE "%s: %d bytes block size " | |
728 | "not supported\n", drive->name, length); | |
729 | } else { | |
194ec0c0 BP |
730 | floppy->blocks = blocks; |
731 | floppy->block_size = length; | |
732 | floppy->bs_factor = length / 512; | |
733 | if (floppy->bs_factor != 1) | |
734 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
735 | "512 bytes block size not " |
736 | "fully supported\n", | |
737 | drive->name); | |
194ec0c0 | 738 | rc = 0; |
1da177e4 LT |
739 | } |
740 | break; | |
741 | case CAPACITY_NO_CARTRIDGE: | |
742 | /* | |
743 | * This is a KERN_ERR so it appears on screen | |
744 | * for the user to see | |
745 | */ | |
746 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
747 | break; | |
748 | case CAPACITY_INVALID: | |
749 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
750 | "in drive\n", drive->name); | |
751 | break; | |
752 | } | |
194ec0c0 | 753 | debug_log("Descriptor 0 Code: %d\n", |
8e555123 | 754 | pc.buf[desc_start + 4] & 0x03); |
1da177e4 LT |
755 | } |
756 | ||
757 | /* Clik! disk does not support get_flexible_disk_page */ | |
ea68d270 | 758 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
8e81bbba | 759 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 LT |
760 | |
761 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); | |
762 | return rc; | |
763 | } | |
764 | ||
765 | /* | |
194ec0c0 BP |
766 | * Obtain the list of formattable capacities. |
767 | * Very similar to ide_floppy_get_capacity, except that we push the capacity | |
768 | * descriptors to userland, instead of our own structures. | |
769 | * | |
770 | * Userland gives us the following structure: | |
771 | * | |
772 | * struct idefloppy_format_capacities { | |
773 | * int nformats; | |
774 | * struct { | |
775 | * int nblocks; | |
776 | * int blocksize; | |
777 | * } formats[]; | |
778 | * }; | |
779 | * | |
780 | * userland initializes nformats to the number of allocated formats[] records. | |
781 | * On exit we set nformats to the number of records we've actually initialized. | |
782 | */ | |
1da177e4 | 783 | |
194ec0c0 | 784 | static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
1da177e4 | 785 | { |
8e555123 | 786 | struct ide_atapi_pc pc; |
194ec0c0 BP |
787 | u8 header_len, desc_cnt; |
788 | int i, blocks, length, u_array_size, u_index; | |
1da177e4 LT |
789 | int __user *argp; |
790 | ||
791 | if (get_user(u_array_size, arg)) | |
e3faa248 | 792 | return -EFAULT; |
1da177e4 LT |
793 | |
794 | if (u_array_size <= 0) | |
e3faa248 | 795 | return -EINVAL; |
1da177e4 LT |
796 | |
797 | idefloppy_create_read_capacity_cmd(&pc); | |
798 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
799 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
e3faa248 | 800 | return -EIO; |
194ec0c0 | 801 | } |
e3faa248 | 802 | |
8e555123 | 803 | header_len = pc.buf[3]; |
194ec0c0 | 804 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
1da177e4 LT |
805 | |
806 | u_index = 0; | |
807 | argp = arg + 1; | |
808 | ||
809 | /* | |
194ec0c0 BP |
810 | * We always skip the first capacity descriptor. That's the current |
811 | * capacity. We are interested in the remaining descriptors, the | |
812 | * formattable capacities. | |
813 | */ | |
814 | for (i = 1; i < desc_cnt; i++) { | |
815 | unsigned int desc_start = 4 + i*8; | |
1da177e4 | 816 | |
1da177e4 LT |
817 | if (u_index >= u_array_size) |
818 | break; /* User-supplied buffer too small */ | |
1da177e4 | 819 | |
85ae98a3 HH |
820 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
821 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
1da177e4 LT |
822 | |
823 | if (put_user(blocks, argp)) | |
e3faa248 BZ |
824 | return -EFAULT; |
825 | ||
1da177e4 LT |
826 | ++argp; |
827 | ||
828 | if (put_user(length, argp)) | |
e3faa248 BZ |
829 | return -EFAULT; |
830 | ||
1da177e4 LT |
831 | ++argp; |
832 | ||
833 | ++u_index; | |
834 | } | |
835 | ||
836 | if (put_user(u_index, arg)) | |
e3faa248 BZ |
837 | return -EFAULT; |
838 | ||
839 | return 0; | |
1da177e4 LT |
840 | } |
841 | ||
1da177e4 | 842 | /* |
0571c7a4 BP |
843 | * Get ATAPI_FORMAT_UNIT progress indication. |
844 | * | |
845 | * Userland gives a pointer to an int. The int is set to a progress | |
846 | * indicator 0-65536, with 65536=100%. | |
847 | * | |
848 | * If the drive does not support format progress indication, we just check | |
849 | * the dsc bit, and return either 0 or 65536. | |
850 | */ | |
1da177e4 | 851 | |
d56c99e2 | 852 | static int ide_floppy_get_format_progress(ide_drive_t *drive, int __user *arg) |
1da177e4 LT |
853 | { |
854 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 855 | struct ide_atapi_pc pc; |
1da177e4 LT |
856 | int progress_indication = 0x10000; |
857 | ||
858 | if (floppy->srfp) { | |
859 | idefloppy_create_request_sense_cmd(&pc); | |
0571c7a4 | 860 | if (idefloppy_queue_pc_tail(drive, &pc)) |
e3faa248 | 861 | return -EIO; |
1da177e4 LT |
862 | |
863 | if (floppy->sense_key == 2 && | |
864 | floppy->asc == 4 && | |
0571c7a4 | 865 | floppy->ascq == 4) |
1da177e4 | 866 | progress_indication = floppy->progress_indication; |
0571c7a4 BP |
867 | |
868 | /* Else assume format_unit has finished, and we're at 0x10000 */ | |
1da177e4 | 869 | } else { |
b73c7ee2 | 870 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 871 | unsigned long flags; |
22c525b9 | 872 | u8 stat; |
1da177e4 LT |
873 | |
874 | local_irq_save(flags); | |
374e042c | 875 | stat = hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
876 | local_irq_restore(flags); |
877 | ||
3a7d2484 | 878 | progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000; |
1da177e4 | 879 | } |
e3faa248 | 880 | |
1da177e4 | 881 | if (put_user(progress_indication, arg)) |
e3faa248 | 882 | return -EFAULT; |
1da177e4 | 883 | |
e3faa248 | 884 | return 0; |
1da177e4 LT |
885 | } |
886 | ||
0571c7a4 | 887 | static sector_t idefloppy_capacity(ide_drive_t *drive) |
1da177e4 LT |
888 | { |
889 | idefloppy_floppy_t *floppy = drive->driver_data; | |
890 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
891 | ||
892 | return capacity; | |
893 | } | |
894 | ||
7662d046 | 895 | #ifdef CONFIG_IDE_PROC_FS |
8185d5aa BZ |
896 | ide_devset_rw(bios_cyl, 0, 1023, bios_cyl); |
897 | ide_devset_rw(bios_head, 0, 255, bios_head); | |
898 | ide_devset_rw(bios_sect, 0, 63, bios_sect); | |
899 | ||
900 | static int get_ticks(ide_drive_t *drive) | |
1da177e4 LT |
901 | { |
902 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8185d5aa BZ |
903 | return floppy->ticks; |
904 | } | |
1da177e4 | 905 | |
8185d5aa BZ |
906 | static int set_ticks(ide_drive_t *drive, int arg) |
907 | { | |
908 | idefloppy_floppy_t *floppy = drive->driver_data; | |
909 | floppy->ticks = arg; | |
910 | return 0; | |
1da177e4 | 911 | } |
8185d5aa BZ |
912 | |
913 | IDE_DEVSET(ticks, S_RW, 0, 255, get_ticks, set_ticks); | |
914 | ||
915 | static const struct ide_devset *idefloppy_settings[] = { | |
916 | &ide_devset_bios_cyl, | |
917 | &ide_devset_bios_head, | |
918 | &ide_devset_bios_sect, | |
919 | &ide_devset_ticks, | |
920 | NULL | |
921 | }; | |
7662d046 | 922 | #endif |
1da177e4 | 923 | |
0571c7a4 | 924 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
1da177e4 | 925 | { |
4dde4492 | 926 | u16 *id = drive->id; |
3ad6776c | 927 | u8 gcw[2]; |
1da177e4 | 928 | |
4dde4492 | 929 | *((u16 *)&gcw) = id[ATA_ID_CONFIG]; |
2e8a6f89 | 930 | |
2207fa5a | 931 | drive->pc_callback = ide_floppy_callback; |
3ad6776c BP |
932 | |
933 | if (((gcw[0] & 0x60) >> 5) == 1) | |
ea68d270 | 934 | drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT; |
1da177e4 | 935 | /* |
0571c7a4 BP |
936 | * We used to check revisions here. At this point however I'm giving up. |
937 | * Just assume they are all broken, its easier. | |
1da177e4 | 938 | * |
0571c7a4 BP |
939 | * The actual reason for the workarounds was likely a driver bug after |
940 | * all rather than a firmware bug, and the workaround below used to hide | |
941 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
942 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 943 | */ |
4dde4492 | 944 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
ea68d270 | 945 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 LT |
946 | /* This value will be visible in the /proc/ide/hdx/settings */ |
947 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
948 | blk_queue_max_sectors(drive->queue, 64); | |
949 | } | |
950 | ||
951 | /* | |
0571c7a4 BP |
952 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
953 | * nasty clicking noises without it, so please don't remove this. | |
954 | */ | |
4dde4492 | 955 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
1da177e4 | 956 | blk_queue_max_sectors(drive->queue, 64); |
ea68d270 | 957 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
1da177e4 LT |
958 | } |
959 | ||
194ec0c0 | 960 | (void) ide_floppy_get_capacity(drive); |
1e874f44 BZ |
961 | |
962 | ide_proc_register_driver(drive, floppy->driver); | |
1da177e4 LT |
963 | } |
964 | ||
4031bbe4 | 965 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
966 | { |
967 | idefloppy_floppy_t *floppy = drive->driver_data; | |
968 | struct gendisk *g = floppy->disk; | |
969 | ||
7662d046 | 970 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
971 | |
972 | del_gendisk(g); | |
973 | ||
974 | ide_floppy_put(floppy); | |
1da177e4 LT |
975 | } |
976 | ||
9a24b63d | 977 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 LT |
978 | { |
979 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
980 | ide_drive_t *drive = floppy->drive; | |
981 | struct gendisk *g = floppy->disk; | |
982 | ||
983 | drive->driver_data = NULL; | |
984 | g->private_data = NULL; | |
985 | put_disk(g); | |
986 | kfree(floppy); | |
987 | } | |
988 | ||
ecfd80e4 | 989 | #ifdef CONFIG_IDE_PROC_FS |
0571c7a4 BP |
990 | static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, |
991 | int count, int *eof, void *data) | |
1da177e4 LT |
992 | { |
993 | ide_drive_t*drive = (ide_drive_t *)data; | |
994 | int len; | |
995 | ||
0571c7a4 BP |
996 | len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); |
997 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
998 | } |
999 | ||
1000 | static ide_proc_entry_t idefloppy_proc[] = { | |
0571c7a4 BP |
1001 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
1002 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1da177e4 LT |
1003 | { NULL, 0, NULL, NULL } |
1004 | }; | |
ecfd80e4 | 1005 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 1006 | |
4031bbe4 | 1007 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 1008 | |
1da177e4 | 1009 | static ide_driver_t idefloppy_driver = { |
8604affd | 1010 | .gen_driver = { |
4ef3b8f4 | 1011 | .owner = THIS_MODULE, |
8604affd BZ |
1012 | .name = "ide-floppy", |
1013 | .bus = &ide_bus_type, | |
8604affd | 1014 | }, |
4031bbe4 RK |
1015 | .probe = ide_floppy_probe, |
1016 | .remove = ide_floppy_remove, | |
1da177e4 LT |
1017 | .version = IDEFLOPPY_VERSION, |
1018 | .media = ide_floppy, | |
1da177e4 | 1019 | .do_request = idefloppy_do_request, |
c2b2b293 | 1020 | .end_request = idefloppy_end_request, |
1da177e4 | 1021 | .error = __ide_error, |
7662d046 | 1022 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1023 | .proc = idefloppy_proc, |
8185d5aa | 1024 | .settings = idefloppy_settings, |
7662d046 | 1025 | #endif |
1da177e4 LT |
1026 | }; |
1027 | ||
e996fc8a BZ |
1028 | static void ide_floppy_set_media_lock(ide_drive_t *drive, int on) |
1029 | { | |
1030 | struct ide_atapi_pc pc; | |
1031 | ||
1032 | /* IOMEGA Clik! drives do not support lock/unlock commands */ | |
1033 | if ((drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE) == 0) { | |
1034 | idefloppy_create_prevent_cmd(&pc, on); | |
1035 | (void)idefloppy_queue_pc_tail(drive, &pc); | |
1036 | } | |
1037 | } | |
1038 | ||
1da177e4 LT |
1039 | static int idefloppy_open(struct inode *inode, struct file *filp) |
1040 | { | |
1041 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1042 | struct ide_floppy_obj *floppy; | |
1043 | ide_drive_t *drive; | |
8e555123 | 1044 | struct ide_atapi_pc pc; |
1da177e4 LT |
1045 | int ret = 0; |
1046 | ||
bcc77d9c | 1047 | debug_log("Reached %s\n", __func__); |
1da177e4 | 1048 | |
0571c7a4 BP |
1049 | floppy = ide_floppy_get(disk); |
1050 | if (!floppy) | |
1da177e4 LT |
1051 | return -ENXIO; |
1052 | ||
1053 | drive = floppy->drive; | |
1054 | ||
c94964a4 | 1055 | floppy->openers++; |
1da177e4 | 1056 | |
c94964a4 | 1057 | if (floppy->openers == 1) { |
ea68d270 | 1058 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
1059 | /* Just in case */ |
1060 | ||
7bf7420a | 1061 | ide_init_pc(&pc); |
c96a7df8 BP |
1062 | pc.c[0] = GPCMD_TEST_UNIT_READY; |
1063 | ||
1da177e4 LT |
1064 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
1065 | idefloppy_create_start_stop_cmd(&pc, 1); | |
1066 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1067 | } | |
1068 | ||
194ec0c0 | 1069 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
1070 | && (filp->f_flags & O_NDELAY) == 0 |
1071 | /* | |
0571c7a4 BP |
1072 | * Allow O_NDELAY to open a drive without a disk, or with an |
1073 | * unreadable disk, so that we can get the format capacity | |
1074 | * of the drive or begin the format - Sam | |
1075 | */ | |
1da177e4 | 1076 | ) { |
1da177e4 LT |
1077 | ret = -EIO; |
1078 | goto out_put_floppy; | |
1079 | } | |
1080 | ||
1081 | if (floppy->wp && (filp->f_mode & 2)) { | |
1da177e4 LT |
1082 | ret = -EROFS; |
1083 | goto out_put_floppy; | |
1084 | } | |
e996fc8a | 1085 | |
ea68d270 | 1086 | drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED; |
e996fc8a | 1087 | ide_floppy_set_media_lock(drive, 1); |
1da177e4 | 1088 | check_disk_change(inode->i_bdev); |
ea68d270 | 1089 | } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
1090 | ret = -EBUSY; |
1091 | goto out_put_floppy; | |
1092 | } | |
1093 | return 0; | |
1094 | ||
1095 | out_put_floppy: | |
c94964a4 | 1096 | floppy->openers--; |
1da177e4 LT |
1097 | ide_floppy_put(floppy); |
1098 | return ret; | |
1099 | } | |
1100 | ||
1101 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
1102 | { | |
1103 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1104 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1105 | ide_drive_t *drive = floppy->drive; | |
bcc77d9c BP |
1106 | |
1107 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 1108 | |
c94964a4 | 1109 | if (floppy->openers == 1) { |
e996fc8a | 1110 | ide_floppy_set_media_lock(drive, 0); |
ea68d270 | 1111 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 1112 | } |
c94964a4 BZ |
1113 | |
1114 | floppy->openers--; | |
1da177e4 LT |
1115 | |
1116 | ide_floppy_put(floppy); | |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | ||
a885c8c4 CH |
1121 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1122 | { | |
1123 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1124 | ide_drive_t *drive = floppy->drive; | |
1125 | ||
1126 | geo->heads = drive->bios_head; | |
1127 | geo->sectors = drive->bios_sect; | |
1128 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1129 | return 0; | |
1130 | } | |
1131 | ||
ea68d270 BP |
1132 | static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc, |
1133 | unsigned long arg, unsigned int cmd) | |
20bf7bda | 1134 | { |
ea68d270 | 1135 | idefloppy_floppy_t *floppy = drive->driver_data; |
e996fc8a | 1136 | int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0; |
ea68d270 | 1137 | |
20bf7bda BP |
1138 | if (floppy->openers > 1) |
1139 | return -EBUSY; | |
1140 | ||
e996fc8a | 1141 | ide_floppy_set_media_lock(drive, prevent); |
20bf7bda BP |
1142 | |
1143 | if (cmd == CDROMEJECT) { | |
1144 | idefloppy_create_start_stop_cmd(pc, 2); | |
1145 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1146 | } | |
1147 | ||
1148 | return 0; | |
1149 | } | |
1150 | ||
d56c99e2 | 1151 | static int ide_floppy_format_unit(ide_drive_t *drive, int __user *arg) |
20bf7bda | 1152 | { |
d56c99e2 | 1153 | idefloppy_floppy_t *floppy = drive->driver_data; |
8e555123 | 1154 | struct ide_atapi_pc pc; |
ea68d270 | 1155 | int blocks, length, flags, err = 0; |
20bf7bda BP |
1156 | |
1157 | if (floppy->openers > 1) { | |
1158 | /* Don't format if someone is using the disk */ | |
ea68d270 | 1159 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1160 | return -EBUSY; |
1161 | } | |
1162 | ||
ea68d270 | 1163 | drive->atapi_flags |= IDE_AFLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1164 | |
1165 | /* | |
1166 | * Send ATAPI_FORMAT_UNIT to the drive. | |
1167 | * | |
1168 | * Userland gives us the following structure: | |
1169 | * | |
1170 | * struct idefloppy_format_command { | |
1171 | * int nblocks; | |
1172 | * int blocksize; | |
1173 | * int flags; | |
1174 | * } ; | |
1175 | * | |
1176 | * flags is a bitmask, currently, the only defined flag is: | |
1177 | * | |
1178 | * 0x01 - verify media after format. | |
1179 | */ | |
1180 | if (get_user(blocks, arg) || | |
1181 | get_user(length, arg+1) || | |
1182 | get_user(flags, arg+2)) { | |
1183 | err = -EFAULT; | |
1184 | goto out; | |
1185 | } | |
1186 | ||
ea68d270 | 1187 | (void) idefloppy_get_sfrp_bit(drive); |
20bf7bda BP |
1188 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); |
1189 | ||
ea68d270 | 1190 | if (idefloppy_queue_pc_tail(drive, &pc)) |
20bf7bda BP |
1191 | err = -EIO; |
1192 | ||
1193 | out: | |
1194 | if (err) | |
ea68d270 | 1195 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1196 | return err; |
1197 | } | |
1198 | ||
d56c99e2 BZ |
1199 | static int ide_floppy_format_ioctl(ide_drive_t *drive, struct file *file, |
1200 | unsigned int cmd, void __user *argp) | |
1201 | { | |
1202 | switch (cmd) { | |
1203 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: | |
1204 | return 0; | |
1205 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
1206 | return ide_floppy_get_format_capacities(drive, argp); | |
1207 | case IDEFLOPPY_IOCTL_FORMAT_START: | |
1208 | if (!(file->f_mode & 2)) | |
1209 | return -EPERM; | |
1210 | return ide_floppy_format_unit(drive, (int __user *)argp); | |
1211 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: | |
1212 | return ide_floppy_get_format_progress(drive, argp); | |
1213 | default: | |
1214 | return -ENOTTY; | |
1215 | } | |
1216 | } | |
20bf7bda | 1217 | |
1da177e4 LT |
1218 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
1219 | unsigned int cmd, unsigned long arg) | |
1220 | { | |
1221 | struct block_device *bdev = inode->i_bdev; | |
1222 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1223 | ide_drive_t *drive = floppy->drive; | |
8e555123 | 1224 | struct ide_atapi_pc pc; |
1da177e4 | 1225 | void __user *argp = (void __user *)arg; |
07203f64 | 1226 | int err; |
1da177e4 | 1227 | |
d56c99e2 | 1228 | if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) |
ea68d270 | 1229 | return ide_floppy_lockdoor(drive, &pc, arg, cmd); |
1da177e4 | 1230 | |
d56c99e2 BZ |
1231 | err = ide_floppy_format_ioctl(drive, file, cmd, argp); |
1232 | if (err != -ENOTTY) | |
1233 | return err; | |
89636af2 BZ |
1234 | |
1235 | /* | |
1236 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
1237 | * and CDROM_SEND_PACKET (legacy) ioctls | |
1238 | */ | |
1239 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
1240 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
1241 | bdev->bd_disk, cmd, argp); | |
89636af2 BZ |
1242 | |
1243 | if (err == -ENOTTY) | |
1244 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1245 | ||
1246 | return err; | |
1da177e4 LT |
1247 | } |
1248 | ||
1249 | static int idefloppy_media_changed(struct gendisk *disk) | |
1250 | { | |
1251 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1252 | ide_drive_t *drive = floppy->drive; | |
6e5fa7b8 | 1253 | int ret; |
1da177e4 LT |
1254 | |
1255 | /* do not scan partitions twice if this is a removable device */ | |
1256 | if (drive->attach) { | |
1257 | drive->attach = 0; | |
1258 | return 0; | |
1259 | } | |
ea68d270 BP |
1260 | ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED); |
1261 | drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED; | |
6e5fa7b8 | 1262 | return ret; |
1da177e4 LT |
1263 | } |
1264 | ||
1265 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
1266 | { | |
1267 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1268 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | static struct block_device_operations idefloppy_ops = { | |
52d3ccf7 PC |
1273 | .owner = THIS_MODULE, |
1274 | .open = idefloppy_open, | |
1275 | .release = idefloppy_release, | |
1276 | .ioctl = idefloppy_ioctl, | |
1277 | .getgeo = idefloppy_getgeo, | |
1278 | .media_changed = idefloppy_media_changed, | |
1279 | .revalidate_disk = idefloppy_revalidate_disk | |
1da177e4 LT |
1280 | }; |
1281 | ||
4031bbe4 | 1282 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
1283 | { |
1284 | idefloppy_floppy_t *floppy; | |
1285 | struct gendisk *g; | |
1286 | ||
1287 | if (!strstr("ide-floppy", drive->driver_req)) | |
1288 | goto failed; | |
2a924662 | 1289 | |
1da177e4 LT |
1290 | if (drive->media != ide_floppy) |
1291 | goto failed; | |
2a924662 | 1292 | |
51509eec | 1293 | if (!ide_check_atapi_device(drive, DRV_NAME)) { |
0571c7a4 BP |
1294 | printk(KERN_ERR "ide-floppy: %s: not supported by this version" |
1295 | " of ide-floppy\n", drive->name); | |
1da177e4 LT |
1296 | goto failed; |
1297 | } | |
0571c7a4 BP |
1298 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
1299 | if (!floppy) { | |
1300 | printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" | |
1301 | " structure\n", drive->name); | |
1da177e4 LT |
1302 | goto failed; |
1303 | } | |
1304 | ||
1305 | g = alloc_disk(1 << PARTN_BITS); | |
1306 | if (!g) | |
1307 | goto out_free_floppy; | |
1308 | ||
1309 | ide_init_disk(g, drive); | |
1310 | ||
1da177e4 LT |
1311 | kref_init(&floppy->kref); |
1312 | ||
1313 | floppy->drive = drive; | |
1314 | floppy->driver = &idefloppy_driver; | |
1315 | floppy->disk = g; | |
1316 | ||
1317 | g->private_data = &floppy->driver; | |
1318 | ||
1319 | drive->driver_data = floppy; | |
1320 | ||
0571c7a4 | 1321 | idefloppy_setup(drive, floppy); |
8604affd | 1322 | |
1da177e4 LT |
1323 | g->minors = 1 << PARTN_BITS; |
1324 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
1325 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
1326 | g->fops = &idefloppy_ops; | |
1327 | drive->attach = 1; | |
1328 | add_disk(g); | |
1329 | return 0; | |
1330 | ||
1da177e4 LT |
1331 | out_free_floppy: |
1332 | kfree(floppy); | |
1333 | failed: | |
8604affd | 1334 | return -ENODEV; |
1da177e4 LT |
1335 | } |
1336 | ||
0571c7a4 | 1337 | static void __exit idefloppy_exit(void) |
1da177e4 | 1338 | { |
8604affd | 1339 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1340 | } |
1341 | ||
17514e8a | 1342 | static int __init idefloppy_init(void) |
1da177e4 LT |
1343 | { |
1344 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 1345 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1346 | } |
1347 | ||
263756ec | 1348 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
1349 | module_init(idefloppy_init); |
1350 | module_exit(idefloppy_exit); | |
1351 | MODULE_LICENSE("GPL"); | |
0571c7a4 BP |
1352 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
1353 |