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Commit | Line | Data |
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1da177e4 | 1 | /* |
d3f20848 BP |
2 | * IDE ATAPI floppy driver. |
3 | * | |
59bca8cc BZ |
4 | * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> |
5 | * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> | |
6 | * Copyright (C) 2005 Bartlomiej Zolnierkiewicz | |
0571c7a4 | 7 | * |
1da177e4 LT |
8 | * This driver supports the following IDE floppy drives: |
9 | * | |
10 | * LS-120/240 SuperDisk | |
11 | * Iomega Zip 100/250 | |
12 | * Iomega PC Card Clik!/PocketZip | |
13 | * | |
d3f20848 BP |
14 | * For a historical changelog see |
15 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 | |
1da177e4 LT |
16 | */ |
17 | ||
fc6c5bc7 | 18 | #define IDEFLOPPY_VERSION "1.00" |
1da177e4 | 19 | |
1da177e4 LT |
20 | #include <linux/module.h> |
21 | #include <linux/types.h> | |
22 | #include <linux/string.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/delay.h> | |
25 | #include <linux/timer.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/interrupt.h> | |
28 | #include <linux/major.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/genhd.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/cdrom.h> | |
33 | #include <linux/ide.h> | |
34 | #include <linux/bitops.h> | |
cf8b8975 | 35 | #include <linux/mutex.h> |
1da177e4 | 36 | |
89636af2 BZ |
37 | #include <scsi/scsi_ioctl.h> |
38 | ||
1da177e4 | 39 | #include <asm/byteorder.h> |
7e8b163b BP |
40 | #include <linux/irq.h> |
41 | #include <linux/uaccess.h> | |
42 | #include <linux/io.h> | |
1da177e4 LT |
43 | #include <asm/unaligned.h> |
44 | ||
f373bd82 | 45 | /* define to see debug info */ |
1da177e4 | 46 | #define IDEFLOPPY_DEBUG_LOG 0 |
1da177e4 LT |
47 | |
48 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ | |
0571c7a4 | 49 | #define IDEFLOPPY_DEBUG(fmt, args...) |
1da177e4 LT |
50 | |
51 | #if IDEFLOPPY_DEBUG_LOG | |
bcc77d9c BP |
52 | #define debug_log(fmt, args...) \ |
53 | printk(KERN_INFO "ide-floppy: " fmt, ## args) | |
1da177e4 | 54 | #else |
0571c7a4 | 55 | #define debug_log(fmt, args...) do {} while (0) |
1da177e4 LT |
56 | #endif |
57 | ||
58 | ||
0571c7a4 | 59 | /* Some drives require a longer irq timeout. */ |
1da177e4 LT |
60 | #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) |
61 | ||
62 | /* | |
0571c7a4 BP |
63 | * After each failed packet command we issue a request sense command and retry |
64 | * the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
1da177e4 LT |
65 | */ |
66 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
67 | ||
68 | /* | |
0571c7a4 BP |
69 | * With each packet command, we allocate a buffer of IDEFLOPPY_PC_BUFFER_SIZE |
70 | * bytes. | |
1da177e4 LT |
71 | */ |
72 | #define IDEFLOPPY_PC_BUFFER_SIZE 256 | |
73 | ||
74 | /* | |
0571c7a4 BP |
75 | * In various places in the driver, we need to allocate storage for packet |
76 | * commands and requests, which will remain valid while we leave the driver to | |
77 | * wait for an interrupt or a timeout event. | |
1da177e4 LT |
78 | */ |
79 | #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES) | |
80 | ||
194ec0c0 | 81 | /* format capacities descriptor codes */ |
1da177e4 LT |
82 | #define CAPACITY_INVALID 0x00 |
83 | #define CAPACITY_UNFORMATTED 0x01 | |
84 | #define CAPACITY_CURRENT 0x02 | |
85 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
86 | ||
87 | /* | |
0571c7a4 BP |
88 | * Most of our global data which we need to save even as we leave the driver |
89 | * due to an interrupt or a timer event is stored in a variable of type | |
90 | * idefloppy_floppy_t, defined below. | |
1da177e4 LT |
91 | */ |
92 | typedef struct ide_floppy_obj { | |
93 | ide_drive_t *drive; | |
94 | ide_driver_t *driver; | |
95 | struct gendisk *disk; | |
96 | struct kref kref; | |
c94964a4 | 97 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
98 | |
99 | /* Current packet command */ | |
8e555123 | 100 | struct ide_atapi_pc *pc; |
1da177e4 | 101 | /* Last failed packet command */ |
8e555123 | 102 | struct ide_atapi_pc *failed_pc; |
1da177e4 | 103 | /* Packet command stack */ |
8e555123 | 104 | struct ide_atapi_pc pc_stack[IDEFLOPPY_PC_STACK]; |
1da177e4 LT |
105 | /* Next free packet command storage space */ |
106 | int pc_stack_index; | |
107 | struct request rq_stack[IDEFLOPPY_PC_STACK]; | |
108 | /* We implement a circular array */ | |
109 | int rq_stack_index; | |
110 | ||
0571c7a4 | 111 | /* Last error information */ |
1da177e4 LT |
112 | u8 sense_key, asc, ascq; |
113 | /* delay this long before sending packet command */ | |
114 | u8 ticks; | |
115 | int progress_indication; | |
116 | ||
0571c7a4 | 117 | /* Device information */ |
1da177e4 LT |
118 | /* Current format */ |
119 | int blocks, block_size, bs_factor; | |
194ec0c0 BP |
120 | /* Last format capacity descriptor */ |
121 | u8 cap_desc[8]; | |
1da177e4 | 122 | /* Copy of the flexible disk page */ |
8e81bbba | 123 | u8 flexible_disk_page[32]; |
1da177e4 LT |
124 | /* Write protect */ |
125 | int wp; | |
126 | /* Supports format progress report */ | |
127 | int srfp; | |
128 | /* Status/Action flags */ | |
129 | unsigned long flags; | |
130 | } idefloppy_floppy_t; | |
131 | ||
c40d3d38 | 132 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 | 133 | |
6e5fa7b8 BP |
134 | /* Floppy flag bits values. */ |
135 | enum { | |
136 | /* DRQ interrupt device */ | |
137 | IDEFLOPPY_FLAG_DRQ_INTERRUPT = (1 << 0), | |
138 | /* Media may have changed */ | |
139 | IDEFLOPPY_FLAG_MEDIA_CHANGED = (1 << 1), | |
140 | /* Format in progress */ | |
141 | IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS = (1 << 2), | |
142 | /* Avoid commands not supported in Clik drive */ | |
143 | IDEFLOPPY_FLAG_CLIK_DRIVE = (1 << 3), | |
144 | /* Requires BH algorithm for packets */ | |
145 | IDEFLOPPY_FLAG_ZIP_DRIVE = (1 << 4), | |
146 | }; | |
1da177e4 | 147 | |
0571c7a4 | 148 | /* Defines for the MODE SENSE command */ |
1da177e4 LT |
149 | #define MODE_SENSE_CURRENT 0x00 |
150 | #define MODE_SENSE_CHANGEABLE 0x01 | |
0571c7a4 | 151 | #define MODE_SENSE_DEFAULT 0x02 |
1da177e4 LT |
152 | #define MODE_SENSE_SAVED 0x03 |
153 | ||
0571c7a4 | 154 | /* IOCTLs used in low-level formatting. */ |
1da177e4 LT |
155 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 |
156 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 | |
157 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 | |
158 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 | |
159 | ||
0571c7a4 | 160 | /* Error code returned in rq->errors to the higher part of the driver. */ |
1da177e4 LT |
161 | #define IDEFLOPPY_ERROR_GENERAL 101 |
162 | ||
1da177e4 | 163 | /* |
948391d1 BP |
164 | * Pages of the SELECT SENSE / MODE SENSE packet commands. |
165 | * See SFF-8070i spec. | |
1da177e4 LT |
166 | */ |
167 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b | |
168 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 | |
169 | ||
cf8b8975 | 170 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
171 | |
172 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
173 | ||
174 | #define ide_floppy_g(disk) \ | |
175 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
176 | ||
177 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) | |
178 | { | |
179 | struct ide_floppy_obj *floppy = NULL; | |
180 | ||
cf8b8975 | 181 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 LT |
182 | floppy = ide_floppy_g(disk); |
183 | if (floppy) | |
184 | kref_get(&floppy->kref); | |
cf8b8975 | 185 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
186 | return floppy; |
187 | } | |
188 | ||
9a24b63d | 189 | static void idefloppy_cleanup_obj(struct kref *); |
1da177e4 LT |
190 | |
191 | static void ide_floppy_put(struct ide_floppy_obj *floppy) | |
192 | { | |
cf8b8975 | 193 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 194 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
cf8b8975 | 195 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
196 | } |
197 | ||
1da177e4 | 198 | /* |
0571c7a4 BP |
199 | * Used to finish servicing a request. For read/write requests, we will call |
200 | * ide_end_request to pass to the next buffer. | |
1da177e4 | 201 | */ |
c2b2b293 | 202 | static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
1da177e4 LT |
203 | { |
204 | idefloppy_floppy_t *floppy = drive->driver_data; | |
205 | struct request *rq = HWGROUP(drive)->rq; | |
206 | int error; | |
207 | ||
bcc77d9c | 208 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
209 | |
210 | switch (uptodate) { | |
0571c7a4 BP |
211 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
212 | case 1: error = 0; break; | |
213 | default: error = uptodate; | |
1da177e4 LT |
214 | } |
215 | if (error) | |
216 | floppy->failed_pc = NULL; | |
217 | /* Why does this happen? */ | |
218 | if (!rq) | |
219 | return 0; | |
4aff5e23 | 220 | if (!blk_special_request(rq)) { |
1da177e4 LT |
221 | /* our real local end request function */ |
222 | ide_end_request(drive, uptodate, nsecs); | |
223 | return 0; | |
224 | } | |
225 | rq->errors = error; | |
226 | /* fixme: need to move this local also */ | |
227 | ide_end_drive_cmd(drive, 0, 0); | |
228 | return 0; | |
229 | } | |
230 | ||
8e555123 | 231 | static void ide_floppy_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, |
32925e1a | 232 | unsigned int bcount, int direction) |
1da177e4 | 233 | { |
9567b349 | 234 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 235 | struct request *rq = pc->rq; |
5705f702 | 236 | struct req_iterator iter; |
1da177e4 LT |
237 | struct bio_vec *bvec; |
238 | unsigned long flags; | |
5705f702 | 239 | int count, done = 0; |
1da177e4 LT |
240 | char *data; |
241 | ||
5705f702 | 242 | rq_for_each_segment(bvec, rq, iter) { |
6c92e699 JA |
243 | if (!bcount) |
244 | break; | |
1da177e4 | 245 | |
6c92e699 | 246 | count = min(bvec->bv_len, bcount); |
1da177e4 | 247 | |
6c92e699 | 248 | data = bvec_kmap_irq(bvec, &flags); |
32925e1a | 249 | if (direction) |
9567b349 | 250 | hwif->output_data(drive, NULL, data, count); |
32925e1a | 251 | else |
9567b349 | 252 | hwif->input_data(drive, NULL, data, count); |
6c92e699 | 253 | bvec_kunmap_irq(data, &flags); |
1da177e4 | 254 | |
6c92e699 JA |
255 | bcount -= count; |
256 | pc->b_count += count; | |
257 | done += count; | |
1da177e4 LT |
258 | } |
259 | ||
c2b2b293 | 260 | idefloppy_end_request(drive, 1, done >> 9); |
1da177e4 LT |
261 | |
262 | if (bcount) { | |
32925e1a BP |
263 | printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n", |
264 | drive->name, __func__, bcount); | |
9f87abe8 | 265 | ide_pad_transfer(drive, direction, bcount); |
1da177e4 LT |
266 | } |
267 | } | |
268 | ||
8e555123 BP |
269 | static void idefloppy_update_buffers(ide_drive_t *drive, |
270 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
271 | { |
272 | struct request *rq = pc->rq; | |
273 | struct bio *bio = rq->bio; | |
274 | ||
275 | while ((bio = rq->bio) != NULL) | |
c2b2b293 | 276 | idefloppy_end_request(drive, 1, 0); |
1da177e4 LT |
277 | } |
278 | ||
279 | /* | |
0571c7a4 BP |
280 | * Generate a new packet command request in front of the request queue, before |
281 | * the current request so that it will be processed immediately, on the next | |
282 | * pass through the driver. | |
1da177e4 | 283 | */ |
8e555123 | 284 | static void idefloppy_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc, |
0571c7a4 | 285 | struct request *rq) |
1da177e4 LT |
286 | { |
287 | struct ide_floppy_obj *floppy = drive->driver_data; | |
288 | ||
124cafc5 | 289 | blk_rq_init(NULL, rq); |
1da177e4 | 290 | rq->buffer = (char *) pc; |
4aff5e23 | 291 | rq->cmd_type = REQ_TYPE_SPECIAL; |
e8a96aa7 | 292 | rq->cmd_flags |= REQ_PREEMPT; |
1da177e4 LT |
293 | rq->rq_disk = floppy->disk; |
294 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
295 | } | |
296 | ||
8e555123 | 297 | static struct ide_atapi_pc *idefloppy_next_pc_storage(ide_drive_t *drive) |
1da177e4 LT |
298 | { |
299 | idefloppy_floppy_t *floppy = drive->driver_data; | |
300 | ||
301 | if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK) | |
0571c7a4 | 302 | floppy->pc_stack_index = 0; |
1da177e4 LT |
303 | return (&floppy->pc_stack[floppy->pc_stack_index++]); |
304 | } | |
305 | ||
0571c7a4 | 306 | static struct request *idefloppy_next_rq_storage(ide_drive_t *drive) |
1da177e4 LT |
307 | { |
308 | idefloppy_floppy_t *floppy = drive->driver_data; | |
309 | ||
310 | if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) | |
311 | floppy->rq_stack_index = 0; | |
312 | return (&floppy->rq_stack[floppy->rq_stack_index++]); | |
313 | } | |
314 | ||
a6ff2d3b | 315 | static void idefloppy_request_sense_callback(ide_drive_t *drive) |
1da177e4 LT |
316 | { |
317 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 318 | u8 *buf = floppy->pc->buf; |
1da177e4 | 319 | |
bcc77d9c BP |
320 | debug_log("Reached %s\n", __func__); |
321 | ||
1da177e4 | 322 | if (!floppy->pc->error) { |
a6ff2d3b BP |
323 | floppy->sense_key = buf[2] & 0x0F; |
324 | floppy->asc = buf[12]; | |
325 | floppy->ascq = buf[13]; | |
326 | floppy->progress_indication = buf[15] & 0x80 ? | |
327 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
328 | ||
329 | if (floppy->failed_pc) | |
330 | debug_log("pc = %x, sense key = %x, asc = %x," | |
331 | " ascq = %x\n", | |
332 | floppy->failed_pc->c[0], | |
333 | floppy->sense_key, | |
334 | floppy->asc, | |
335 | floppy->ascq); | |
336 | else | |
337 | debug_log("sense key = %x, asc = %x, ascq = %x\n", | |
338 | floppy->sense_key, | |
339 | floppy->asc, | |
340 | floppy->ascq); | |
341 | ||
342 | ||
c2b2b293 | 343 | idefloppy_end_request(drive, 1, 0); |
1da177e4 | 344 | } else { |
a6ff2d3b BP |
345 | printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting" |
346 | " request!\n"); | |
c2b2b293 | 347 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
348 | } |
349 | } | |
350 | ||
0571c7a4 BP |
351 | /* General packet command callback function. */ |
352 | static void idefloppy_pc_callback(ide_drive_t *drive) | |
1da177e4 LT |
353 | { |
354 | idefloppy_floppy_t *floppy = drive->driver_data; | |
bcc77d9c BP |
355 | |
356 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 357 | |
c2b2b293 | 358 | idefloppy_end_request(drive, floppy->pc->error ? 0 : 1, 0); |
1da177e4 LT |
359 | } |
360 | ||
8e555123 | 361 | static void idefloppy_init_pc(struct ide_atapi_pc *pc) |
1da177e4 LT |
362 | { |
363 | memset(pc->c, 0, 12); | |
364 | pc->retries = 0; | |
365 | pc->flags = 0; | |
8e555123 BP |
366 | pc->req_xfer = 0; |
367 | pc->buf = pc->pc_buf; | |
368 | pc->buf_size = IDEFLOPPY_PC_BUFFER_SIZE; | |
369 | pc->idefloppy_callback = &idefloppy_pc_callback; | |
1da177e4 LT |
370 | } |
371 | ||
8e555123 | 372 | static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 373 | { |
30d67099 BP |
374 | idefloppy_init_pc(pc); |
375 | pc->c[0] = GPCMD_REQUEST_SENSE; | |
1da177e4 | 376 | pc->c[4] = 255; |
8e555123 BP |
377 | pc->req_xfer = 18; |
378 | pc->idefloppy_callback = &idefloppy_request_sense_callback; | |
1da177e4 LT |
379 | } |
380 | ||
381 | /* | |
0571c7a4 BP |
382 | * Called when an error was detected during the last packet command. We queue a |
383 | * request sense packet command in the head of the request list. | |
1da177e4 | 384 | */ |
0571c7a4 | 385 | static void idefloppy_retry_pc(ide_drive_t *drive) |
1da177e4 | 386 | { |
8e555123 | 387 | struct ide_atapi_pc *pc; |
1da177e4 | 388 | struct request *rq; |
1da177e4 | 389 | |
64a57fe4 | 390 | (void)ide_read_error(drive); |
1da177e4 LT |
391 | pc = idefloppy_next_pc_storage(drive); |
392 | rq = idefloppy_next_rq_storage(drive); | |
393 | idefloppy_create_request_sense_cmd(pc); | |
394 | idefloppy_queue_pc_head(drive, pc, rq); | |
395 | } | |
396 | ||
0eea6458 | 397 | /* The usual interrupt handler called during a packet command. */ |
52d3ccf7 | 398 | static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) |
1da177e4 LT |
399 | { |
400 | idefloppy_floppy_t *floppy = drive->driver_data; | |
790d1239 | 401 | ide_hwif_t *hwif = drive->hwif; |
8e555123 | 402 | struct ide_atapi_pc *pc = floppy->pc; |
1da177e4 | 403 | struct request *rq = pc->rq; |
0eea6458 | 404 | xfer_func_t *xferfunc; |
1da177e4 | 405 | unsigned int temp; |
d30a7fba | 406 | int dma_error = 0; |
790d1239 | 407 | u16 bcount; |
8e7657ae | 408 | u8 stat, ireason; |
1da177e4 | 409 | |
bcc77d9c | 410 | debug_log("Reached %s interrupt handler\n", __func__); |
1da177e4 | 411 | |
6e5fa7b8 | 412 | if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { |
5e37bdc0 | 413 | dma_error = hwif->dma_ops->dma_end(drive); |
d30a7fba BP |
414 | if (dma_error) { |
415 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
416 | rq_data_dir(rq) ? "write" : "read"); | |
6e5fa7b8 | 417 | pc->flags |= PC_FLAG_DMA_ERROR; |
1da177e4 | 418 | } else { |
8e555123 | 419 | pc->xferred = pc->req_xfer; |
1da177e4 LT |
420 | idefloppy_update_buffers(drive, pc); |
421 | } | |
bcc77d9c | 422 | debug_log("DMA finished\n"); |
1da177e4 LT |
423 | } |
424 | ||
425 | /* Clear the interrupt */ | |
c47137a9 | 426 | stat = ide_read_status(drive); |
1da177e4 | 427 | |
0571c7a4 BP |
428 | /* No more interrupts */ |
429 | if ((stat & DRQ_STAT) == 0) { | |
bcc77d9c | 430 | debug_log("Packet command completed, %d bytes transferred\n", |
8e555123 | 431 | pc->xferred); |
6e5fa7b8 | 432 | pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; |
1da177e4 | 433 | |
366c7f55 | 434 | local_irq_enable_in_hardirq(); |
1da177e4 | 435 | |
6e5fa7b8 | 436 | if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) { |
1da177e4 | 437 | /* Error detected */ |
bcc77d9c | 438 | debug_log("%s: I/O error\n", drive->name); |
1da177e4 | 439 | rq->errors++; |
30d67099 | 440 | if (pc->c[0] == GPCMD_REQUEST_SENSE) { |
1da177e4 LT |
441 | printk(KERN_ERR "ide-floppy: I/O error in " |
442 | "request sense command\n"); | |
443 | return ide_do_reset(drive); | |
444 | } | |
445 | /* Retry operation */ | |
446 | idefloppy_retry_pc(drive); | |
447 | /* queued, but not started */ | |
448 | return ide_stopped; | |
449 | } | |
450 | pc->error = 0; | |
451 | if (floppy->failed_pc == pc) | |
452 | floppy->failed_pc = NULL; | |
453 | /* Command finished - Call the callback function */ | |
8e555123 | 454 | pc->idefloppy_callback(drive); |
1da177e4 LT |
455 | return ide_stopped; |
456 | } | |
457 | ||
6e5fa7b8 BP |
458 | if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { |
459 | pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; | |
1da177e4 LT |
460 | printk(KERN_ERR "ide-floppy: The floppy wants to issue " |
461 | "more interrupts in DMA mode\n"); | |
7469aaf6 | 462 | ide_dma_off(drive); |
1da177e4 LT |
463 | return ide_do_reset(drive); |
464 | } | |
465 | ||
466 | /* Get the number of bytes to transfer */ | |
4c3032d8 BZ |
467 | bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) | |
468 | hwif->INB(hwif->io_ports.lbam_addr); | |
1da177e4 | 469 | /* on this interrupt */ |
4c3032d8 | 470 | ireason = hwif->INB(hwif->io_ports.nsect_addr); |
1da177e4 | 471 | |
8e7657ae | 472 | if (ireason & CD) { |
0eea6458 | 473 | printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__); |
1da177e4 LT |
474 | return ide_do_reset(drive); |
475 | } | |
6e5fa7b8 | 476 | if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) { |
1da177e4 LT |
477 | /* Hopefully, we will never get here */ |
478 | printk(KERN_ERR "ide-floppy: We wanted to %s, ", | |
8e7657ae | 479 | (ireason & IO) ? "Write" : "Read"); |
1da177e4 | 480 | printk(KERN_ERR "but the floppy wants us to %s !\n", |
8e7657ae | 481 | (ireason & IO) ? "Read" : "Write"); |
1da177e4 LT |
482 | return ide_do_reset(drive); |
483 | } | |
6e5fa7b8 | 484 | if (!(pc->flags & PC_FLAG_WRITING)) { |
1da177e4 | 485 | /* Reading - Check that we have enough space */ |
8e555123 BP |
486 | temp = pc->xferred + bcount; |
487 | if (temp > pc->req_xfer) { | |
488 | if (temp > pc->buf_size) { | |
1da177e4 LT |
489 | printk(KERN_ERR "ide-floppy: The floppy wants " |
490 | "to send us more data than expected " | |
491 | "- discarding data\n"); | |
9f87abe8 | 492 | ide_pad_transfer(drive, 0, bcount); |
0078df2e | 493 | |
1da177e4 LT |
494 | ide_set_handler(drive, |
495 | &idefloppy_pc_intr, | |
496 | IDEFLOPPY_WAIT_CMD, | |
497 | NULL); | |
498 | return ide_started; | |
499 | } | |
bcc77d9c BP |
500 | debug_log("The floppy wants to send us more data than" |
501 | " expected - allowing transfer\n"); | |
1da177e4 LT |
502 | } |
503 | } | |
6e5fa7b8 | 504 | if (pc->flags & PC_FLAG_WRITING) |
9567b349 | 505 | xferfunc = hwif->output_data; |
32925e1a | 506 | else |
9567b349 | 507 | xferfunc = hwif->input_data; |
0eea6458 | 508 | |
8e555123 | 509 | if (pc->buf) |
9567b349 | 510 | xferfunc(drive, NULL, pc->cur_pos, bcount); |
0eea6458 | 511 | else |
32925e1a | 512 | ide_floppy_io_buffers(drive, pc, bcount, |
6e5fa7b8 | 513 | !!(pc->flags & PC_FLAG_WRITING)); |
0eea6458 | 514 | |
1da177e4 | 515 | /* Update the current position */ |
8e555123 BP |
516 | pc->xferred += bcount; |
517 | pc->cur_pos += bcount; | |
1da177e4 | 518 | |
32925e1a BP |
519 | /* And set the interrupt handler again */ |
520 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
1da177e4 LT |
521 | return ide_started; |
522 | } | |
523 | ||
524 | /* | |
525 | * This is the original routine that did the packet transfer. | |
526 | * It fails at high speeds on the Iomega ZIP drive, so there's a slower version | |
527 | * for that drive below. The algorithm is chosen based on drive type | |
528 | */ | |
0571c7a4 | 529 | static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive) |
1da177e4 | 530 | { |
23579a2a | 531 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
532 | ide_startstop_t startstop; |
533 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e7657ae | 534 | u8 ireason; |
1da177e4 LT |
535 | |
536 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
537 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
538 | "initiated yet DRQ isn't asserted\n"); | |
539 | return startstop; | |
540 | } | |
4c3032d8 | 541 | ireason = hwif->INB(hwif->io_ports.nsect_addr); |
8e7657ae | 542 | if ((ireason & CD) == 0 || (ireason & IO)) { |
1da177e4 LT |
543 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while " |
544 | "issuing a packet command\n"); | |
545 | return ide_do_reset(drive); | |
546 | } | |
0078df2e | 547 | |
1da177e4 LT |
548 | /* Set the interrupt routine */ |
549 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
9567b349 | 550 | |
1da177e4 | 551 | /* Send the actual packet */ |
9567b349 BZ |
552 | hwif->output_data(drive, NULL, floppy->pc->c, 12); |
553 | ||
1da177e4 LT |
554 | return ide_started; |
555 | } | |
556 | ||
557 | ||
558 | /* | |
0571c7a4 BP |
559 | * What we have here is a classic case of a top half / bottom half interrupt |
560 | * service routine. In interrupt mode, the device sends an interrupt to signal | |
561 | * that it is ready to receive a packet. However, we need to delay about 2-3 | |
562 | * ticks before issuing the packet or we gets in trouble. | |
1da177e4 | 563 | * |
0571c7a4 BP |
564 | * So, follow carefully. transfer_pc1 is called as an interrupt (or directly). |
565 | * In either case, when the device says it's ready for a packet, we schedule | |
566 | * the packet transfer to occur about 2-3 ticks later in transfer_pc2. | |
1da177e4 | 567 | */ |
0571c7a4 | 568 | static int idefloppy_transfer_pc2(ide_drive_t *drive) |
1da177e4 LT |
569 | { |
570 | idefloppy_floppy_t *floppy = drive->driver_data; | |
571 | ||
572 | /* Send the actual packet */ | |
9567b349 BZ |
573 | drive->hwif->output_data(drive, NULL, floppy->pc->c, 12); |
574 | ||
1da177e4 LT |
575 | /* Timeout for the packet command */ |
576 | return IDEFLOPPY_WAIT_CMD; | |
577 | } | |
578 | ||
0571c7a4 | 579 | static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive) |
1da177e4 | 580 | { |
23579a2a | 581 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
582 | idefloppy_floppy_t *floppy = drive->driver_data; |
583 | ide_startstop_t startstop; | |
8e7657ae | 584 | u8 ireason; |
1da177e4 LT |
585 | |
586 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
587 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
588 | "initiated yet DRQ isn't asserted\n"); | |
589 | return startstop; | |
590 | } | |
4c3032d8 | 591 | ireason = hwif->INB(hwif->io_ports.nsect_addr); |
8e7657ae | 592 | if ((ireason & CD) == 0 || (ireason & IO)) { |
1da177e4 LT |
593 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) " |
594 | "while issuing a packet command\n"); | |
595 | return ide_do_reset(drive); | |
596 | } | |
0571c7a4 | 597 | /* |
1da177e4 LT |
598 | * The following delay solves a problem with ATAPI Zip 100 drives |
599 | * where the Busy flag was apparently being deasserted before the | |
600 | * unit was ready to receive data. This was happening on a | |
601 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
602 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
603 | * used until after the packet is moved in about 50 msec. | |
604 | */ | |
0078df2e | 605 | |
0571c7a4 BP |
606 | ide_set_handler(drive, &idefloppy_pc_intr, floppy->ticks, |
607 | &idefloppy_transfer_pc2); | |
1da177e4 LT |
608 | return ide_started; |
609 | } | |
610 | ||
d652c138 | 611 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
8e555123 | 612 | struct ide_atapi_pc *pc) |
1da177e4 | 613 | { |
d652c138 | 614 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
615 | if (floppy->sense_key == 0x02 && |
616 | floppy->asc == 0x3a && | |
617 | floppy->ascq == 0x00) | |
d652c138 BP |
618 | return; |
619 | ||
620 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
621 | "asc = %2x, ascq = %2x\n", | |
622 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
623 | floppy->asc, floppy->ascq); | |
624 | ||
1da177e4 LT |
625 | } |
626 | ||
0571c7a4 | 627 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 628 | struct ide_atapi_pc *pc) |
1da177e4 LT |
629 | { |
630 | idefloppy_floppy_t *floppy = drive->driver_data; | |
631 | ide_hwif_t *hwif = drive->hwif; | |
1da177e4 | 632 | ide_handler_t *pkt_xfer_routine; |
790d1239 | 633 | u16 bcount; |
e5f9f5a8 | 634 | u8 dma; |
1da177e4 | 635 | |
1da177e4 | 636 | if (floppy->failed_pc == NULL && |
30d67099 | 637 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 LT |
638 | floppy->failed_pc = pc; |
639 | /* Set the current packet command */ | |
640 | floppy->pc = pc; | |
641 | ||
757ced89 | 642 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 643 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
644 | ide_floppy_report_error(floppy, pc); |
645 | /* Giving up */ | |
646 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
647 | ||
1da177e4 | 648 | floppy->failed_pc = NULL; |
8e555123 | 649 | pc->idefloppy_callback(drive); |
1da177e4 LT |
650 | return ide_stopped; |
651 | } | |
652 | ||
bcc77d9c | 653 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
654 | |
655 | pc->retries++; | |
656 | /* We haven't transferred any data yet */ | |
8e555123 BP |
657 | pc->xferred = 0; |
658 | pc->cur_pos = pc->buf; | |
659 | bcount = min(pc->req_xfer, 63 * 1024); | |
1da177e4 | 660 | |
6e5fa7b8 BP |
661 | if (pc->flags & PC_FLAG_DMA_ERROR) { |
662 | pc->flags &= ~PC_FLAG_DMA_ERROR; | |
7469aaf6 | 663 | ide_dma_off(drive); |
6e5fa7b8 | 664 | } |
e5f9f5a8 | 665 | dma = 0; |
1da177e4 | 666 | |
6e5fa7b8 | 667 | if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma) |
5e37bdc0 | 668 | dma = !hwif->dma_ops->dma_setup(drive); |
1da177e4 | 669 | |
2fc57388 BZ |
670 | ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK | |
671 | IDE_TFLAG_OUT_DEVICE, bcount, dma); | |
1da177e4 | 672 | |
0571c7a4 BP |
673 | if (dma) { |
674 | /* Begin DMA, if necessary */ | |
6e5fa7b8 | 675 | pc->flags |= PC_FLAG_DMA_IN_PROGRESS; |
5e37bdc0 | 676 | hwif->dma_ops->dma_start(drive); |
1da177e4 LT |
677 | } |
678 | ||
679 | /* Can we transfer the packet when we get the interrupt or wait? */ | |
6e5fa7b8 | 680 | if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) { |
1da177e4 LT |
681 | /* wait */ |
682 | pkt_xfer_routine = &idefloppy_transfer_pc1; | |
683 | } else { | |
684 | /* immediate */ | |
685 | pkt_xfer_routine = &idefloppy_transfer_pc; | |
686 | } | |
8e555123 | 687 | |
6e5fa7b8 | 688 | if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) { |
1da177e4 LT |
689 | /* Issue the packet command */ |
690 | ide_execute_command(drive, WIN_PACKETCMD, | |
691 | pkt_xfer_routine, | |
692 | IDEFLOPPY_WAIT_CMD, | |
693 | NULL); | |
694 | return ide_started; | |
695 | } else { | |
696 | /* Issue the packet command */ | |
1fc14258 | 697 | ide_execute_pkt_cmd(drive); |
1da177e4 LT |
698 | return (*pkt_xfer_routine) (drive); |
699 | } | |
700 | } | |
701 | ||
0571c7a4 | 702 | static void idefloppy_rw_callback(ide_drive_t *drive) |
1da177e4 | 703 | { |
bcc77d9c | 704 | debug_log("Reached %s\n", __func__); |
1da177e4 | 705 | |
c2b2b293 | 706 | idefloppy_end_request(drive, 1, 0); |
1da177e4 LT |
707 | return; |
708 | } | |
709 | ||
8e555123 | 710 | static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent) |
1da177e4 | 711 | { |
bcc77d9c | 712 | debug_log("creating prevent removal command, prevent = %d\n", prevent); |
1da177e4 LT |
713 | |
714 | idefloppy_init_pc(pc); | |
30d67099 | 715 | pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
1da177e4 LT |
716 | pc->c[4] = prevent; |
717 | } | |
718 | ||
8e555123 | 719 | static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 LT |
720 | { |
721 | idefloppy_init_pc(pc); | |
30d67099 | 722 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
723 | pc->c[7] = 255; |
724 | pc->c[8] = 255; | |
8e555123 | 725 | pc->req_xfer = 255; |
1da177e4 LT |
726 | } |
727 | ||
8e555123 BP |
728 | static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b, |
729 | int l, int flags) | |
1da177e4 LT |
730 | { |
731 | idefloppy_init_pc(pc); | |
30d67099 | 732 | pc->c[0] = GPCMD_FORMAT_UNIT; |
1da177e4 LT |
733 | pc->c[1] = 0x17; |
734 | ||
8e555123 BP |
735 | memset(pc->buf, 0, 12); |
736 | pc->buf[1] = 0xA2; | |
1da177e4 LT |
737 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ |
738 | ||
739 | if (flags & 1) /* Verify bit on... */ | |
8e555123 BP |
740 | pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */ |
741 | pc->buf[3] = 8; | |
1da177e4 | 742 | |
8e555123 BP |
743 | put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4])); |
744 | put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8])); | |
745 | pc->buf_size = 12; | |
6e5fa7b8 | 746 | pc->flags |= PC_FLAG_WRITING; |
1da177e4 LT |
747 | } |
748 | ||
0571c7a4 | 749 | /* A mode sense command is used to "sense" floppy parameters. */ |
8e555123 BP |
750 | static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, |
751 | u8 page_code, u8 type) | |
1da177e4 | 752 | { |
24a5d703 | 753 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 754 | |
1da177e4 | 755 | idefloppy_init_pc(pc); |
30d67099 | 756 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 LT |
757 | pc->c[1] = 0; |
758 | pc->c[2] = page_code + (type << 6); | |
759 | ||
760 | switch (page_code) { | |
0571c7a4 BP |
761 | case IDEFLOPPY_CAPABILITIES_PAGE: |
762 | length += 12; | |
763 | break; | |
764 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
765 | length += 32; | |
766 | break; | |
767 | default: | |
768 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1da177e4 LT |
769 | "in create_mode_sense_cmd\n"); |
770 | } | |
8f622430 | 771 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 772 | pc->req_xfer = length; |
1da177e4 LT |
773 | } |
774 | ||
8e555123 | 775 | static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start) |
1da177e4 LT |
776 | { |
777 | idefloppy_init_pc(pc); | |
30d67099 | 778 | pc->c[0] = GPCMD_START_STOP_UNIT; |
1da177e4 LT |
779 | pc->c[4] = start; |
780 | } | |
781 | ||
8e555123 | 782 | static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc *pc) |
1da177e4 LT |
783 | { |
784 | idefloppy_init_pc(pc); | |
30d67099 | 785 | pc->c[0] = GPCMD_TEST_UNIT_READY; |
1da177e4 LT |
786 | } |
787 | ||
ae7e8ddc | 788 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 789 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 790 | unsigned long sector) |
1da177e4 LT |
791 | { |
792 | int block = sector / floppy->bs_factor; | |
793 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
794 | int cmd = rq_data_dir(rq); | |
795 | ||
ae7e8ddc | 796 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
797 | block, blocks); |
798 | ||
799 | idefloppy_init_pc(pc); | |
ae7e8ddc BP |
800 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
801 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 802 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 803 | |
8e555123 | 804 | pc->idefloppy_callback = &idefloppy_rw_callback; |
1da177e4 LT |
805 | pc->rq = rq; |
806 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; | |
4aff5e23 | 807 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 808 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
809 | pc->buf = NULL; |
810 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
6e5fa7b8 | 811 | pc->flags |= PC_FLAG_DMA_RECOMMENDED; |
1da177e4 LT |
812 | } |
813 | ||
0571c7a4 | 814 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 815 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 816 | { |
1da177e4 | 817 | idefloppy_init_pc(pc); |
8e555123 | 818 | pc->idefloppy_callback = &idefloppy_rw_callback; |
1da177e4 | 819 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf JA |
820 | pc->rq = rq; |
821 | pc->b_count = rq->data_len; | |
822 | if (rq->data_len && rq_data_dir(rq) == WRITE) | |
6e5fa7b8 | 823 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 824 | pc->buf = rq->data; |
3d6392cf | 825 | if (rq->bio) |
6e5fa7b8 | 826 | pc->flags |= PC_FLAG_DMA_RECOMMENDED; |
3d6392cf JA |
827 | /* |
828 | * possibly problematic, doesn't look like ide-floppy correctly | |
829 | * handled scattered requests if dma fails... | |
830 | */ | |
8e555123 | 831 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
832 | } |
833 | ||
0571c7a4 BP |
834 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
835 | struct request *rq, sector_t block_s) | |
1da177e4 LT |
836 | { |
837 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 838 | struct ide_atapi_pc *pc; |
1da177e4 LT |
839 | unsigned long block = (unsigned long)block_s; |
840 | ||
bcc77d9c | 841 | debug_log("dev: %s, cmd_type: %x, errors: %d\n", |
18cddac3 | 842 | rq->rq_disk ? rq->rq_disk->disk_name : "?", |
bcc77d9c BP |
843 | rq->cmd_type, rq->errors); |
844 | debug_log("sector: %ld, nr_sectors: %ld, " | |
1da177e4 LT |
845 | "current_nr_sectors: %d\n", (long)rq->sector, |
846 | rq->nr_sectors, rq->current_nr_sectors); | |
847 | ||
848 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
849 | if (floppy->failed_pc) |
850 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
851 | else |
852 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
853 | drive->name); | |
c2b2b293 | 854 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
855 | return ide_stopped; |
856 | } | |
4aff5e23 | 857 | if (blk_fs_request(rq)) { |
1da177e4 LT |
858 | if (((long)rq->sector % floppy->bs_factor) || |
859 | (rq->nr_sectors % floppy->bs_factor)) { | |
0571c7a4 BP |
860 | printk(KERN_ERR "%s: unsupported r/w request size\n", |
861 | drive->name); | |
c2b2b293 | 862 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
863 | return ide_stopped; |
864 | } | |
865 | pc = idefloppy_next_pc_storage(drive); | |
866 | idefloppy_create_rw_cmd(floppy, pc, rq, block); | |
4aff5e23 | 867 | } else if (blk_special_request(rq)) { |
8e555123 | 868 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 869 | } else if (blk_pc_request(rq)) { |
1da177e4 | 870 | pc = idefloppy_next_pc_storage(drive); |
3d6392cf | 871 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
872 | } else { |
873 | blk_dump_rq_flags(rq, | |
874 | "ide-floppy: unsupported command in queue"); | |
c2b2b293 | 875 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
876 | return ide_stopped; |
877 | } | |
878 | ||
879 | pc->rq = rq; | |
880 | return idefloppy_issue_pc(drive, pc); | |
881 | } | |
882 | ||
883 | /* | |
0571c7a4 BP |
884 | * Add a special packet command request to the tail of the request queue, |
885 | * and wait for it to be serviced. | |
1da177e4 | 886 | */ |
8e555123 | 887 | static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc) |
1da177e4 LT |
888 | { |
889 | struct ide_floppy_obj *floppy = drive->driver_data; | |
6fe16238 FT |
890 | struct request *rq; |
891 | int error; | |
1da177e4 | 892 | |
6fe16238 FT |
893 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
894 | rq->buffer = (char *) pc; | |
895 | rq->cmd_type = REQ_TYPE_SPECIAL; | |
896 | error = blk_execute_rq(drive->queue, floppy->disk, rq, 0); | |
897 | blk_put_request(rq); | |
1da177e4 | 898 | |
6fe16238 | 899 | return error; |
1da177e4 LT |
900 | } |
901 | ||
902 | /* | |
8e81bbba BP |
903 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
904 | * parameters and use the LBA parameters instead. | |
1da177e4 | 905 | */ |
8e81bbba | 906 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
907 | { |
908 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 909 | struct ide_atapi_pc pc; |
8e81bbba | 910 | u8 *page; |
1da177e4 | 911 | int capacity, lba_capacity; |
8e81bbba BP |
912 | u16 transfer_rate, sector_size, cyls, rpm; |
913 | u8 heads, sectors; | |
1da177e4 | 914 | |
8e81bbba BP |
915 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, |
916 | MODE_SENSE_CURRENT); | |
917 | ||
918 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
919 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" | |
920 | " parameters\n"); | |
1da177e4 LT |
921 | return 1; |
922 | } | |
8e555123 | 923 | floppy->wp = !!(pc.buf[3] & 0x80); |
1da177e4 | 924 | set_disk_ro(floppy->disk, floppy->wp); |
8e555123 | 925 | page = &pc.buf[8]; |
8e81bbba | 926 | |
8e555123 BP |
927 | transfer_rate = be16_to_cpu(*(u16 *)&pc.buf[8 + 2]); |
928 | sector_size = be16_to_cpu(*(u16 *)&pc.buf[8 + 6]); | |
929 | cyls = be16_to_cpu(*(u16 *)&pc.buf[8 + 8]); | |
930 | rpm = be16_to_cpu(*(u16 *)&pc.buf[8 + 28]); | |
931 | heads = pc.buf[8 + 4]; | |
932 | sectors = pc.buf[8 + 5]; | |
8e81bbba BP |
933 | |
934 | capacity = cyls * heads * sectors * sector_size; | |
935 | ||
936 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
937 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
938 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
939 | drive->name, capacity / 1024, cyls, heads, |
940 | sectors, transfer_rate / 8, sector_size, rpm); | |
941 | ||
942 | memcpy(&floppy->flexible_disk_page, page, 32); | |
943 | drive->bios_cyl = cyls; | |
944 | drive->bios_head = heads; | |
945 | drive->bios_sect = sectors; | |
1da177e4 | 946 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 947 | |
1da177e4 LT |
948 | if (capacity < lba_capacity) { |
949 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
950 | "bytes, but the drive only handles %d\n", | |
951 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
952 | floppy->blocks = floppy->block_size ? |
953 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
954 | } |
955 | return 0; | |
956 | } | |
957 | ||
948391d1 | 958 | static int idefloppy_get_sfrp_bit(ide_drive_t *drive) |
1da177e4 LT |
959 | { |
960 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 961 | struct ide_atapi_pc pc; |
1da177e4 LT |
962 | |
963 | floppy->srfp = 0; | |
964 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, | |
965 | MODE_SENSE_CURRENT); | |
966 | ||
6e5fa7b8 | 967 | pc.flags |= PC_FLAG_SUPPRESS_ERROR; |
948391d1 | 968 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 969 | return 1; |
1da177e4 | 970 | |
8e555123 | 971 | floppy->srfp = pc.buf[8 + 2] & 0x40; |
1da177e4 LT |
972 | return (0); |
973 | } | |
974 | ||
975 | /* | |
194ec0c0 BP |
976 | * Determine if a media is present in the floppy drive, and if so, its LBA |
977 | * capacity. | |
1da177e4 | 978 | */ |
194ec0c0 | 979 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
980 | { |
981 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 982 | struct ide_atapi_pc pc; |
194ec0c0 BP |
983 | u8 *cap_desc; |
984 | u8 header_len, desc_cnt; | |
985 | int i, rc = 1, blocks, length; | |
986 | ||
1da177e4 LT |
987 | drive->bios_cyl = 0; |
988 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
989 | floppy->blocks = 0; |
990 | floppy->bs_factor = 1; | |
1da177e4 LT |
991 | set_capacity(floppy->disk, 0); |
992 | ||
993 | idefloppy_create_read_capacity_cmd(&pc); | |
994 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
995 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
996 | return 1; | |
997 | } | |
8e555123 BP |
998 | header_len = pc.buf[3]; |
999 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
1000 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
1001 | ||
1002 | for (i = 0; i < desc_cnt; i++) { | |
1003 | unsigned int desc_start = 4 + i*8; | |
1004 | ||
8e555123 BP |
1005 | blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]); |
1006 | length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 BP |
1007 | |
1008 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
1009 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 1010 | |
194ec0c0 BP |
1011 | if (i) |
1012 | continue; | |
1013 | /* | |
1014 | * the code below is valid only for the 1st descriptor, ie i=0 | |
1015 | */ | |
1da177e4 | 1016 | |
8e555123 | 1017 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
1018 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
1019 | case CAPACITY_UNFORMATTED: | |
6e5fa7b8 | 1020 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) |
0571c7a4 | 1021 | /* |
1da177e4 LT |
1022 | * If it is not a clik drive, break out |
1023 | * (maintains previous driver behaviour) | |
1024 | */ | |
1025 | break; | |
1026 | case CAPACITY_CURRENT: | |
1027 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 1028 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
1029 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
1030 | "sector size\n", drive->name, | |
1031 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
1032 | memcpy(&floppy->cap_desc, cap_desc, 8); |
1033 | ||
1da177e4 LT |
1034 | if (!length || length % 512) { |
1035 | printk(KERN_NOTICE "%s: %d bytes block size " | |
1036 | "not supported\n", drive->name, length); | |
1037 | } else { | |
194ec0c0 BP |
1038 | floppy->blocks = blocks; |
1039 | floppy->block_size = length; | |
1040 | floppy->bs_factor = length / 512; | |
1041 | if (floppy->bs_factor != 1) | |
1042 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
1043 | "512 bytes block size not " |
1044 | "fully supported\n", | |
1045 | drive->name); | |
194ec0c0 | 1046 | rc = 0; |
1da177e4 LT |
1047 | } |
1048 | break; | |
1049 | case CAPACITY_NO_CARTRIDGE: | |
1050 | /* | |
1051 | * This is a KERN_ERR so it appears on screen | |
1052 | * for the user to see | |
1053 | */ | |
1054 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
1055 | break; | |
1056 | case CAPACITY_INVALID: | |
1057 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
1058 | "in drive\n", drive->name); | |
1059 | break; | |
1060 | } | |
194ec0c0 | 1061 | debug_log("Descriptor 0 Code: %d\n", |
8e555123 | 1062 | pc.buf[desc_start + 4] & 0x03); |
1da177e4 LT |
1063 | } |
1064 | ||
1065 | /* Clik! disk does not support get_flexible_disk_page */ | |
6e5fa7b8 | 1066 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) |
8e81bbba | 1067 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 LT |
1068 | |
1069 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); | |
1070 | return rc; | |
1071 | } | |
1072 | ||
1073 | /* | |
194ec0c0 BP |
1074 | * Obtain the list of formattable capacities. |
1075 | * Very similar to ide_floppy_get_capacity, except that we push the capacity | |
1076 | * descriptors to userland, instead of our own structures. | |
1077 | * | |
1078 | * Userland gives us the following structure: | |
1079 | * | |
1080 | * struct idefloppy_format_capacities { | |
1081 | * int nformats; | |
1082 | * struct { | |
1083 | * int nblocks; | |
1084 | * int blocksize; | |
1085 | * } formats[]; | |
1086 | * }; | |
1087 | * | |
1088 | * userland initializes nformats to the number of allocated formats[] records. | |
1089 | * On exit we set nformats to the number of records we've actually initialized. | |
1090 | */ | |
1da177e4 | 1091 | |
194ec0c0 | 1092 | static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
1da177e4 | 1093 | { |
8e555123 | 1094 | struct ide_atapi_pc pc; |
194ec0c0 BP |
1095 | u8 header_len, desc_cnt; |
1096 | int i, blocks, length, u_array_size, u_index; | |
1da177e4 LT |
1097 | int __user *argp; |
1098 | ||
1099 | if (get_user(u_array_size, arg)) | |
1100 | return (-EFAULT); | |
1101 | ||
1102 | if (u_array_size <= 0) | |
1103 | return (-EINVAL); | |
1104 | ||
1105 | idefloppy_create_read_capacity_cmd(&pc); | |
1106 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1107 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
194ec0c0 BP |
1108 | return (-EIO); |
1109 | } | |
8e555123 | 1110 | header_len = pc.buf[3]; |
194ec0c0 | 1111 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
1da177e4 LT |
1112 | |
1113 | u_index = 0; | |
1114 | argp = arg + 1; | |
1115 | ||
1116 | /* | |
194ec0c0 BP |
1117 | * We always skip the first capacity descriptor. That's the current |
1118 | * capacity. We are interested in the remaining descriptors, the | |
1119 | * formattable capacities. | |
1120 | */ | |
1121 | for (i = 1; i < desc_cnt; i++) { | |
1122 | unsigned int desc_start = 4 + i*8; | |
1da177e4 | 1123 | |
1da177e4 LT |
1124 | if (u_index >= u_array_size) |
1125 | break; /* User-supplied buffer too small */ | |
1da177e4 | 1126 | |
8e555123 BP |
1127 | blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]); |
1128 | length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]); | |
1da177e4 LT |
1129 | |
1130 | if (put_user(blocks, argp)) | |
1131 | return(-EFAULT); | |
1132 | ++argp; | |
1133 | ||
1134 | if (put_user(length, argp)) | |
1135 | return (-EFAULT); | |
1136 | ++argp; | |
1137 | ||
1138 | ++u_index; | |
1139 | } | |
1140 | ||
1141 | if (put_user(u_index, arg)) | |
1142 | return (-EFAULT); | |
1143 | return (0); | |
1144 | } | |
1145 | ||
1da177e4 | 1146 | /* |
0571c7a4 BP |
1147 | * Get ATAPI_FORMAT_UNIT progress indication. |
1148 | * | |
1149 | * Userland gives a pointer to an int. The int is set to a progress | |
1150 | * indicator 0-65536, with 65536=100%. | |
1151 | * | |
1152 | * If the drive does not support format progress indication, we just check | |
1153 | * the dsc bit, and return either 0 or 65536. | |
1154 | */ | |
1da177e4 LT |
1155 | |
1156 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) | |
1157 | { | |
1158 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 1159 | struct ide_atapi_pc pc; |
1da177e4 LT |
1160 | int progress_indication = 0x10000; |
1161 | ||
1162 | if (floppy->srfp) { | |
1163 | idefloppy_create_request_sense_cmd(&pc); | |
0571c7a4 | 1164 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 1165 | return (-EIO); |
1da177e4 LT |
1166 | |
1167 | if (floppy->sense_key == 2 && | |
1168 | floppy->asc == 4 && | |
0571c7a4 | 1169 | floppy->ascq == 4) |
1da177e4 | 1170 | progress_indication = floppy->progress_indication; |
0571c7a4 BP |
1171 | |
1172 | /* Else assume format_unit has finished, and we're at 0x10000 */ | |
1da177e4 | 1173 | } else { |
1da177e4 | 1174 | unsigned long flags; |
22c525b9 | 1175 | u8 stat; |
1da177e4 LT |
1176 | |
1177 | local_irq_save(flags); | |
c47137a9 | 1178 | stat = ide_read_status(drive); |
1da177e4 LT |
1179 | local_irq_restore(flags); |
1180 | ||
22c525b9 | 1181 | progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000; |
1da177e4 LT |
1182 | } |
1183 | if (put_user(progress_indication, arg)) | |
1184 | return (-EFAULT); | |
1185 | ||
1186 | return (0); | |
1187 | } | |
1188 | ||
0571c7a4 | 1189 | static sector_t idefloppy_capacity(ide_drive_t *drive) |
1da177e4 LT |
1190 | { |
1191 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1192 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
1193 | ||
1194 | return capacity; | |
1195 | } | |
1196 | ||
1197 | /* | |
f373bd82 BP |
1198 | * Check whether we can support a drive, based on the ATAPI IDENTIFY command |
1199 | * results. | |
1da177e4 | 1200 | */ |
f373bd82 | 1201 | static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id) |
1da177e4 | 1202 | { |
3ad6776c BP |
1203 | u8 gcw[2]; |
1204 | u8 device_type, protocol, removable, drq_type, packet_size; | |
1da177e4 LT |
1205 | |
1206 | *((u16 *) &gcw) = id->config; | |
1207 | ||
3ad6776c BP |
1208 | device_type = gcw[1] & 0x1F; |
1209 | removable = (gcw[0] & 0x80) >> 7; | |
1210 | protocol = (gcw[1] & 0xC0) >> 6; | |
1211 | drq_type = (gcw[0] & 0x60) >> 5; | |
1212 | packet_size = gcw[0] & 0x03; | |
1213 | ||
1da177e4 LT |
1214 | #ifdef CONFIG_PPC |
1215 | /* kludge for Apple PowerBook internal zip */ | |
3ad6776c BP |
1216 | if (device_type == 5 && |
1217 | !strstr(id->model, "CD-ROM") && strstr(id->model, "ZIP")) | |
1218 | device_type = 0; | |
1da177e4 LT |
1219 | #endif |
1220 | ||
3ad6776c | 1221 | if (protocol != 2) |
f373bd82 | 1222 | printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n", |
3ad6776c BP |
1223 | protocol); |
1224 | else if (device_type != 0) | |
f373bd82 | 1225 | printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set " |
3ad6776c BP |
1226 | "to floppy\n", device_type); |
1227 | else if (!removable) | |
1da177e4 | 1228 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); |
3ad6776c | 1229 | else if (drq_type == 3) |
f373bd82 | 1230 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not " |
3ad6776c BP |
1231 | "supported\n", drq_type); |
1232 | else if (packet_size != 0) | |
f373bd82 | 1233 | printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 " |
3ad6776c BP |
1234 | "bytes\n", packet_size); |
1235 | else | |
1da177e4 LT |
1236 | return 1; |
1237 | return 0; | |
1238 | } | |
1239 | ||
7662d046 | 1240 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1241 | static void idefloppy_add_settings(ide_drive_t *drive) |
1242 | { | |
1243 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1244 | ||
0571c7a4 BP |
1245 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, |
1246 | &drive->bios_cyl, NULL); | |
1247 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, | |
1248 | &drive->bios_head, NULL); | |
1249 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, | |
1250 | &drive->bios_sect, NULL); | |
1251 | ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, | |
1252 | &floppy->ticks, NULL); | |
1da177e4 | 1253 | } |
7662d046 BZ |
1254 | #else |
1255 | static inline void idefloppy_add_settings(ide_drive_t *drive) { ; } | |
1256 | #endif | |
1da177e4 | 1257 | |
0571c7a4 | 1258 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
1da177e4 | 1259 | { |
3ad6776c | 1260 | u8 gcw[2]; |
1da177e4 LT |
1261 | |
1262 | *((u16 *) &gcw) = drive->id->config; | |
1263 | floppy->pc = floppy->pc_stack; | |
3ad6776c BP |
1264 | |
1265 | if (((gcw[0] & 0x60) >> 5) == 1) | |
6e5fa7b8 | 1266 | floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT; |
1da177e4 | 1267 | /* |
0571c7a4 BP |
1268 | * We used to check revisions here. At this point however I'm giving up. |
1269 | * Just assume they are all broken, its easier. | |
1da177e4 | 1270 | * |
0571c7a4 BP |
1271 | * The actual reason for the workarounds was likely a driver bug after |
1272 | * all rather than a firmware bug, and the workaround below used to hide | |
1273 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
1274 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 1275 | */ |
1da177e4 | 1276 | if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { |
6e5fa7b8 | 1277 | floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE; |
1da177e4 LT |
1278 | /* This value will be visible in the /proc/ide/hdx/settings */ |
1279 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
1280 | blk_queue_max_sectors(drive->queue, 64); | |
1281 | } | |
1282 | ||
1283 | /* | |
0571c7a4 BP |
1284 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
1285 | * nasty clicking noises without it, so please don't remove this. | |
1286 | */ | |
1da177e4 LT |
1287 | if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { |
1288 | blk_queue_max_sectors(drive->queue, 64); | |
6e5fa7b8 | 1289 | floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE; |
1da177e4 LT |
1290 | } |
1291 | ||
194ec0c0 | 1292 | (void) ide_floppy_get_capacity(drive); |
1da177e4 LT |
1293 | idefloppy_add_settings(drive); |
1294 | } | |
1295 | ||
4031bbe4 | 1296 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
1297 | { |
1298 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1299 | struct gendisk *g = floppy->disk; | |
1300 | ||
7662d046 | 1301 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
1302 | |
1303 | del_gendisk(g); | |
1304 | ||
1305 | ide_floppy_put(floppy); | |
1da177e4 LT |
1306 | } |
1307 | ||
9a24b63d | 1308 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 LT |
1309 | { |
1310 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
1311 | ide_drive_t *drive = floppy->drive; | |
1312 | struct gendisk *g = floppy->disk; | |
1313 | ||
1314 | drive->driver_data = NULL; | |
1315 | g->private_data = NULL; | |
1316 | put_disk(g); | |
1317 | kfree(floppy); | |
1318 | } | |
1319 | ||
ecfd80e4 | 1320 | #ifdef CONFIG_IDE_PROC_FS |
0571c7a4 BP |
1321 | static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, |
1322 | int count, int *eof, void *data) | |
1da177e4 LT |
1323 | { |
1324 | ide_drive_t*drive = (ide_drive_t *)data; | |
1325 | int len; | |
1326 | ||
0571c7a4 BP |
1327 | len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); |
1328 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
1329 | } |
1330 | ||
1331 | static ide_proc_entry_t idefloppy_proc[] = { | |
0571c7a4 BP |
1332 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
1333 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1da177e4 LT |
1334 | { NULL, 0, NULL, NULL } |
1335 | }; | |
ecfd80e4 | 1336 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 1337 | |
4031bbe4 | 1338 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 1339 | |
1da177e4 | 1340 | static ide_driver_t idefloppy_driver = { |
8604affd | 1341 | .gen_driver = { |
4ef3b8f4 | 1342 | .owner = THIS_MODULE, |
8604affd BZ |
1343 | .name = "ide-floppy", |
1344 | .bus = &ide_bus_type, | |
8604affd | 1345 | }, |
4031bbe4 RK |
1346 | .probe = ide_floppy_probe, |
1347 | .remove = ide_floppy_remove, | |
1da177e4 LT |
1348 | .version = IDEFLOPPY_VERSION, |
1349 | .media = ide_floppy, | |
1da177e4 | 1350 | .supports_dsc_overlap = 0, |
1da177e4 | 1351 | .do_request = idefloppy_do_request, |
c2b2b293 | 1352 | .end_request = idefloppy_end_request, |
1da177e4 LT |
1353 | .error = __ide_error, |
1354 | .abort = __ide_abort, | |
7662d046 | 1355 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1356 | .proc = idefloppy_proc, |
7662d046 | 1357 | #endif |
1da177e4 LT |
1358 | }; |
1359 | ||
1360 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
1361 | { | |
1362 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1363 | struct ide_floppy_obj *floppy; | |
1364 | ide_drive_t *drive; | |
8e555123 | 1365 | struct ide_atapi_pc pc; |
1da177e4 LT |
1366 | int ret = 0; |
1367 | ||
bcc77d9c | 1368 | debug_log("Reached %s\n", __func__); |
1da177e4 | 1369 | |
0571c7a4 BP |
1370 | floppy = ide_floppy_get(disk); |
1371 | if (!floppy) | |
1da177e4 LT |
1372 | return -ENXIO; |
1373 | ||
1374 | drive = floppy->drive; | |
1375 | ||
c94964a4 | 1376 | floppy->openers++; |
1da177e4 | 1377 | |
c94964a4 | 1378 | if (floppy->openers == 1) { |
6e5fa7b8 | 1379 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
1380 | /* Just in case */ |
1381 | ||
1382 | idefloppy_create_test_unit_ready_cmd(&pc); | |
1383 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1384 | idefloppy_create_start_stop_cmd(&pc, 1); | |
1385 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1386 | } | |
1387 | ||
194ec0c0 | 1388 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
1389 | && (filp->f_flags & O_NDELAY) == 0 |
1390 | /* | |
0571c7a4 BP |
1391 | * Allow O_NDELAY to open a drive without a disk, or with an |
1392 | * unreadable disk, so that we can get the format capacity | |
1393 | * of the drive or begin the format - Sam | |
1394 | */ | |
1da177e4 | 1395 | ) { |
1da177e4 LT |
1396 | ret = -EIO; |
1397 | goto out_put_floppy; | |
1398 | } | |
1399 | ||
1400 | if (floppy->wp && (filp->f_mode & 2)) { | |
1da177e4 LT |
1401 | ret = -EROFS; |
1402 | goto out_put_floppy; | |
1403 | } | |
6e5fa7b8 | 1404 | floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED; |
1da177e4 | 1405 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
6e5fa7b8 | 1406 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1407 | idefloppy_create_prevent_cmd(&pc, 1); |
1408 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1409 | } | |
1410 | check_disk_change(inode->i_bdev); | |
6e5fa7b8 | 1411 | } else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
1412 | ret = -EBUSY; |
1413 | goto out_put_floppy; | |
1414 | } | |
1415 | return 0; | |
1416 | ||
1417 | out_put_floppy: | |
c94964a4 | 1418 | floppy->openers--; |
1da177e4 LT |
1419 | ide_floppy_put(floppy); |
1420 | return ret; | |
1421 | } | |
1422 | ||
1423 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
1424 | { | |
1425 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1426 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1427 | ide_drive_t *drive = floppy->drive; | |
8e555123 | 1428 | struct ide_atapi_pc pc; |
bcc77d9c BP |
1429 | |
1430 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 1431 | |
c94964a4 | 1432 | if (floppy->openers == 1) { |
1da177e4 | 1433 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
6e5fa7b8 | 1434 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1435 | idefloppy_create_prevent_cmd(&pc, 0); |
1436 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1437 | } | |
1438 | ||
6e5fa7b8 | 1439 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 1440 | } |
c94964a4 BZ |
1441 | |
1442 | floppy->openers--; | |
1da177e4 LT |
1443 | |
1444 | ide_floppy_put(floppy); | |
1445 | ||
1446 | return 0; | |
1447 | } | |
1448 | ||
a885c8c4 CH |
1449 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1450 | { | |
1451 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1452 | ide_drive_t *drive = floppy->drive; | |
1453 | ||
1454 | geo->heads = drive->bios_head; | |
1455 | geo->sectors = drive->bios_sect; | |
1456 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1457 | return 0; | |
1458 | } | |
1459 | ||
8e555123 BP |
1460 | static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy, |
1461 | struct ide_atapi_pc *pc, unsigned long arg, unsigned int cmd) | |
20bf7bda BP |
1462 | { |
1463 | if (floppy->openers > 1) | |
1464 | return -EBUSY; | |
1465 | ||
1466 | /* The IOMEGA Clik! Drive doesn't support this command - | |
1467 | * no room for an eject mechanism */ | |
6e5fa7b8 | 1468 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
20bf7bda BP |
1469 | int prevent = arg ? 1 : 0; |
1470 | ||
1471 | if (cmd == CDROMEJECT) | |
1472 | prevent = 0; | |
1473 | ||
1474 | idefloppy_create_prevent_cmd(pc, prevent); | |
1475 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1476 | } | |
1477 | ||
1478 | if (cmd == CDROMEJECT) { | |
1479 | idefloppy_create_start_stop_cmd(pc, 2); | |
1480 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1481 | } | |
1482 | ||
1483 | return 0; | |
1484 | } | |
1485 | ||
1486 | static int ide_floppy_format_unit(idefloppy_floppy_t *floppy, | |
1487 | int __user *arg) | |
1488 | { | |
1489 | int blocks, length, flags, err = 0; | |
8e555123 | 1490 | struct ide_atapi_pc pc; |
20bf7bda BP |
1491 | |
1492 | if (floppy->openers > 1) { | |
1493 | /* Don't format if someone is using the disk */ | |
6e5fa7b8 | 1494 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1495 | return -EBUSY; |
1496 | } | |
1497 | ||
6e5fa7b8 | 1498 | floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1499 | |
1500 | /* | |
1501 | * Send ATAPI_FORMAT_UNIT to the drive. | |
1502 | * | |
1503 | * Userland gives us the following structure: | |
1504 | * | |
1505 | * struct idefloppy_format_command { | |
1506 | * int nblocks; | |
1507 | * int blocksize; | |
1508 | * int flags; | |
1509 | * } ; | |
1510 | * | |
1511 | * flags is a bitmask, currently, the only defined flag is: | |
1512 | * | |
1513 | * 0x01 - verify media after format. | |
1514 | */ | |
1515 | if (get_user(blocks, arg) || | |
1516 | get_user(length, arg+1) || | |
1517 | get_user(flags, arg+2)) { | |
1518 | err = -EFAULT; | |
1519 | goto out; | |
1520 | } | |
1521 | ||
1522 | (void) idefloppy_get_sfrp_bit(floppy->drive); | |
1523 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); | |
1524 | ||
1525 | if (idefloppy_queue_pc_tail(floppy->drive, &pc)) | |
1526 | err = -EIO; | |
1527 | ||
1528 | out: | |
1529 | if (err) | |
6e5fa7b8 | 1530 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1531 | return err; |
1532 | } | |
1533 | ||
1534 | ||
1da177e4 LT |
1535 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
1536 | unsigned int cmd, unsigned long arg) | |
1537 | { | |
1538 | struct block_device *bdev = inode->i_bdev; | |
1539 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1540 | ide_drive_t *drive = floppy->drive; | |
8e555123 | 1541 | struct ide_atapi_pc pc; |
1da177e4 | 1542 | void __user *argp = (void __user *)arg; |
07203f64 | 1543 | int err; |
1da177e4 LT |
1544 | |
1545 | switch (cmd) { | |
1546 | case CDROMEJECT: | |
1da177e4 LT |
1547 | /* fall through */ |
1548 | case CDROM_LOCKDOOR: | |
20bf7bda | 1549 | return ide_floppy_lockdoor(floppy, &pc, arg, cmd); |
1da177e4 LT |
1550 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: |
1551 | return 0; | |
1552 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
194ec0c0 | 1553 | return ide_floppy_get_format_capacities(drive, argp); |
1da177e4 | 1554 | case IDEFLOPPY_IOCTL_FORMAT_START: |
1da177e4 LT |
1555 | if (!(file->f_mode & 2)) |
1556 | return -EPERM; | |
1557 | ||
20bf7bda | 1558 | return ide_floppy_format_unit(floppy, (int __user *)arg); |
1da177e4 LT |
1559 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: |
1560 | return idefloppy_get_format_progress(drive, argp); | |
1561 | } | |
89636af2 BZ |
1562 | |
1563 | /* | |
1564 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
1565 | * and CDROM_SEND_PACKET (legacy) ioctls | |
1566 | */ | |
1567 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
1568 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
1569 | bdev->bd_disk, cmd, argp); | |
1570 | else | |
1571 | err = -ENOTTY; | |
1572 | ||
1573 | if (err == -ENOTTY) | |
1574 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1575 | ||
1576 | return err; | |
1da177e4 LT |
1577 | } |
1578 | ||
1579 | static int idefloppy_media_changed(struct gendisk *disk) | |
1580 | { | |
1581 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1582 | ide_drive_t *drive = floppy->drive; | |
6e5fa7b8 | 1583 | int ret; |
1da177e4 LT |
1584 | |
1585 | /* do not scan partitions twice if this is a removable device */ | |
1586 | if (drive->attach) { | |
1587 | drive->attach = 0; | |
1588 | return 0; | |
1589 | } | |
6e5fa7b8 BP |
1590 | ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED); |
1591 | floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED; | |
1592 | return ret; | |
1da177e4 LT |
1593 | } |
1594 | ||
1595 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
1596 | { | |
1597 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1598 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | static struct block_device_operations idefloppy_ops = { | |
52d3ccf7 PC |
1603 | .owner = THIS_MODULE, |
1604 | .open = idefloppy_open, | |
1605 | .release = idefloppy_release, | |
1606 | .ioctl = idefloppy_ioctl, | |
1607 | .getgeo = idefloppy_getgeo, | |
1608 | .media_changed = idefloppy_media_changed, | |
1609 | .revalidate_disk = idefloppy_revalidate_disk | |
1da177e4 LT |
1610 | }; |
1611 | ||
4031bbe4 | 1612 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
1613 | { |
1614 | idefloppy_floppy_t *floppy; | |
1615 | struct gendisk *g; | |
1616 | ||
1617 | if (!strstr("ide-floppy", drive->driver_req)) | |
1618 | goto failed; | |
1619 | if (!drive->present) | |
1620 | goto failed; | |
1621 | if (drive->media != ide_floppy) | |
1622 | goto failed; | |
0571c7a4 BP |
1623 | if (!idefloppy_identify_device(drive, drive->id)) { |
1624 | printk(KERN_ERR "ide-floppy: %s: not supported by this version" | |
1625 | " of ide-floppy\n", drive->name); | |
1da177e4 LT |
1626 | goto failed; |
1627 | } | |
1628 | if (drive->scsi) { | |
0571c7a4 BP |
1629 | printk(KERN_INFO "ide-floppy: passing drive %s to ide-scsi" |
1630 | " emulation.\n", drive->name); | |
1da177e4 LT |
1631 | goto failed; |
1632 | } | |
0571c7a4 BP |
1633 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
1634 | if (!floppy) { | |
1635 | printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" | |
1636 | " structure\n", drive->name); | |
1da177e4 LT |
1637 | goto failed; |
1638 | } | |
1639 | ||
1640 | g = alloc_disk(1 << PARTN_BITS); | |
1641 | if (!g) | |
1642 | goto out_free_floppy; | |
1643 | ||
1644 | ide_init_disk(g, drive); | |
1645 | ||
7662d046 | 1646 | ide_proc_register_driver(drive, &idefloppy_driver); |
1da177e4 | 1647 | |
1da177e4 LT |
1648 | kref_init(&floppy->kref); |
1649 | ||
1650 | floppy->drive = drive; | |
1651 | floppy->driver = &idefloppy_driver; | |
1652 | floppy->disk = g; | |
1653 | ||
1654 | g->private_data = &floppy->driver; | |
1655 | ||
1656 | drive->driver_data = floppy; | |
1657 | ||
0571c7a4 | 1658 | idefloppy_setup(drive, floppy); |
8604affd | 1659 | |
1da177e4 LT |
1660 | g->minors = 1 << PARTN_BITS; |
1661 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
1662 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
1663 | g->fops = &idefloppy_ops; | |
1664 | drive->attach = 1; | |
1665 | add_disk(g); | |
1666 | return 0; | |
1667 | ||
1da177e4 LT |
1668 | out_free_floppy: |
1669 | kfree(floppy); | |
1670 | failed: | |
8604affd | 1671 | return -ENODEV; |
1da177e4 LT |
1672 | } |
1673 | ||
0571c7a4 | 1674 | static void __exit idefloppy_exit(void) |
1da177e4 | 1675 | { |
8604affd | 1676 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1677 | } |
1678 | ||
17514e8a | 1679 | static int __init idefloppy_init(void) |
1da177e4 LT |
1680 | { |
1681 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 1682 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1683 | } |
1684 | ||
263756ec | 1685 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
1686 | module_init(idefloppy_init); |
1687 | module_exit(idefloppy_exit); | |
1688 | MODULE_LICENSE("GPL"); | |
0571c7a4 BP |
1689 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
1690 |