Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
d3f20848 BP |
2 | * IDE ATAPI floppy driver. |
3 | * | |
59bca8cc BZ |
4 | * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> |
5 | * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> | |
6 | * Copyright (C) 2005 Bartlomiej Zolnierkiewicz | |
0571c7a4 | 7 | * |
1da177e4 LT |
8 | * This driver supports the following IDE floppy drives: |
9 | * | |
10 | * LS-120/240 SuperDisk | |
11 | * Iomega Zip 100/250 | |
12 | * Iomega PC Card Clik!/PocketZip | |
13 | * | |
d3f20848 BP |
14 | * For a historical changelog see |
15 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 | |
1da177e4 LT |
16 | */ |
17 | ||
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 | 293 | rq->rq_disk = floppy->disk; |
63f5abb0 | 294 | ide_do_drive_cmd(drive, rq); |
1da177e4 LT |
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 | ||
81f49382 | 315 | static void ide_floppy_callback(ide_drive_t *drive) |
1da177e4 LT |
316 | { |
317 | idefloppy_floppy_t *floppy = drive->driver_data; | |
81f49382 BP |
318 | struct ide_atapi_pc *pc = floppy->pc; |
319 | int uptodate = pc->error ? 0 : 1; | |
1da177e4 | 320 | |
bcc77d9c BP |
321 | debug_log("Reached %s\n", __func__); |
322 | ||
81f49382 BP |
323 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
324 | (pc->rq && blk_pc_request(pc->rq))) | |
325 | uptodate = 1; /* FIXME */ | |
326 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
327 | u8 *buf = floppy->pc->buf; | |
a6ff2d3b | 328 | |
81f49382 BP |
329 | if (!pc->error) { |
330 | floppy->sense_key = buf[2] & 0x0F; | |
331 | floppy->asc = buf[12]; | |
332 | floppy->ascq = buf[13]; | |
333 | floppy->progress_indication = buf[15] & 0x80 ? | |
334 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 335 | |
81f49382 BP |
336 | if (floppy->failed_pc) |
337 | debug_log("pc = %x, ", floppy->failed_pc->c[0]); | |
bcc77d9c | 338 | |
81f49382 BP |
339 | debug_log("sense key = %x, asc = %x, ascq = %x\n", |
340 | floppy->sense_key, floppy->asc, floppy->ascq); | |
341 | } else | |
342 | printk(KERN_ERR "Error in REQUEST SENSE itself - " | |
343 | "Aborting request!\n"); | |
344 | } | |
1da177e4 | 345 | |
81f49382 | 346 | idefloppy_end_request(drive, uptodate, 0); |
1da177e4 LT |
347 | } |
348 | ||
8e555123 | 349 | static void idefloppy_init_pc(struct ide_atapi_pc *pc) |
1da177e4 LT |
350 | { |
351 | memset(pc->c, 0, 12); | |
352 | pc->retries = 0; | |
353 | pc->flags = 0; | |
8e555123 BP |
354 | pc->req_xfer = 0; |
355 | pc->buf = pc->pc_buf; | |
356 | pc->buf_size = IDEFLOPPY_PC_BUFFER_SIZE; | |
1b06e92a | 357 | pc->callback = ide_floppy_callback; |
1da177e4 LT |
358 | } |
359 | ||
8e555123 | 360 | static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 361 | { |
30d67099 BP |
362 | idefloppy_init_pc(pc); |
363 | pc->c[0] = GPCMD_REQUEST_SENSE; | |
1da177e4 | 364 | pc->c[4] = 255; |
8e555123 | 365 | pc->req_xfer = 18; |
1da177e4 LT |
366 | } |
367 | ||
368 | /* | |
0571c7a4 BP |
369 | * Called when an error was detected during the last packet command. We queue a |
370 | * request sense packet command in the head of the request list. | |
1da177e4 | 371 | */ |
0571c7a4 | 372 | static void idefloppy_retry_pc(ide_drive_t *drive) |
1da177e4 | 373 | { |
8e555123 | 374 | struct ide_atapi_pc *pc; |
1da177e4 | 375 | struct request *rq; |
1da177e4 | 376 | |
64a57fe4 | 377 | (void)ide_read_error(drive); |
1da177e4 LT |
378 | pc = idefloppy_next_pc_storage(drive); |
379 | rq = idefloppy_next_rq_storage(drive); | |
380 | idefloppy_create_request_sense_cmd(pc); | |
381 | idefloppy_queue_pc_head(drive, pc, rq); | |
382 | } | |
383 | ||
0eea6458 | 384 | /* The usual interrupt handler called during a packet command. */ |
52d3ccf7 | 385 | static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) |
1da177e4 LT |
386 | { |
387 | idefloppy_floppy_t *floppy = drive->driver_data; | |
790d1239 | 388 | ide_hwif_t *hwif = drive->hwif; |
8e555123 | 389 | struct ide_atapi_pc *pc = floppy->pc; |
1da177e4 | 390 | struct request *rq = pc->rq; |
0eea6458 | 391 | xfer_func_t *xferfunc; |
1da177e4 | 392 | unsigned int temp; |
d30a7fba | 393 | int dma_error = 0; |
790d1239 | 394 | u16 bcount; |
8e7657ae | 395 | u8 stat, ireason; |
1da177e4 | 396 | |
bcc77d9c | 397 | debug_log("Reached %s interrupt handler\n", __func__); |
1da177e4 | 398 | |
6e5fa7b8 | 399 | if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { |
5e37bdc0 | 400 | dma_error = hwif->dma_ops->dma_end(drive); |
d30a7fba BP |
401 | if (dma_error) { |
402 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
403 | rq_data_dir(rq) ? "write" : "read"); | |
6e5fa7b8 | 404 | pc->flags |= PC_FLAG_DMA_ERROR; |
1da177e4 | 405 | } else { |
8e555123 | 406 | pc->xferred = pc->req_xfer; |
1da177e4 LT |
407 | idefloppy_update_buffers(drive, pc); |
408 | } | |
bcc77d9c | 409 | debug_log("DMA finished\n"); |
1da177e4 LT |
410 | } |
411 | ||
412 | /* Clear the interrupt */ | |
c47137a9 | 413 | stat = ide_read_status(drive); |
1da177e4 | 414 | |
0571c7a4 BP |
415 | /* No more interrupts */ |
416 | if ((stat & DRQ_STAT) == 0) { | |
bcc77d9c | 417 | debug_log("Packet command completed, %d bytes transferred\n", |
8e555123 | 418 | pc->xferred); |
6e5fa7b8 | 419 | pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; |
1da177e4 | 420 | |
366c7f55 | 421 | local_irq_enable_in_hardirq(); |
1da177e4 | 422 | |
6e5fa7b8 | 423 | if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) { |
1da177e4 | 424 | /* Error detected */ |
bcc77d9c | 425 | debug_log("%s: I/O error\n", drive->name); |
1da177e4 | 426 | rq->errors++; |
30d67099 | 427 | if (pc->c[0] == GPCMD_REQUEST_SENSE) { |
568ca927 BZ |
428 | printk(KERN_ERR "%s: I/O error in request sense" |
429 | " command\n", drive->name); | |
1da177e4 LT |
430 | return ide_do_reset(drive); |
431 | } | |
432 | /* Retry operation */ | |
433 | idefloppy_retry_pc(drive); | |
434 | /* queued, but not started */ | |
435 | return ide_stopped; | |
436 | } | |
437 | pc->error = 0; | |
438 | if (floppy->failed_pc == pc) | |
439 | floppy->failed_pc = NULL; | |
440 | /* Command finished - Call the callback function */ | |
1b06e92a | 441 | pc->callback(drive); |
1da177e4 LT |
442 | return ide_stopped; |
443 | } | |
444 | ||
6e5fa7b8 BP |
445 | if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { |
446 | pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; | |
568ca927 BZ |
447 | printk(KERN_ERR "%s: The device wants to issue more interrupts " |
448 | "in DMA mode\n", drive->name); | |
7469aaf6 | 449 | ide_dma_off(drive); |
1da177e4 LT |
450 | return ide_do_reset(drive); |
451 | } | |
452 | ||
453 | /* Get the number of bytes to transfer */ | |
4c3032d8 BZ |
454 | bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) | |
455 | hwif->INB(hwif->io_ports.lbam_addr); | |
1da177e4 | 456 | /* on this interrupt */ |
4c3032d8 | 457 | ireason = hwif->INB(hwif->io_ports.nsect_addr); |
1da177e4 | 458 | |
8e7657ae | 459 | if (ireason & CD) { |
568ca927 | 460 | printk(KERN_ERR "%s: CoD != 0 in %s\n", drive->name, __func__); |
1da177e4 LT |
461 | return ide_do_reset(drive); |
462 | } | |
6e5fa7b8 | 463 | if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) { |
1da177e4 | 464 | /* Hopefully, we will never get here */ |
568ca927 BZ |
465 | printk(KERN_ERR "%s: We wanted to %s, but the device wants us " |
466 | "to %s!\n", drive->name, | |
467 | (ireason & IO) ? "Write" : "Read", | |
8e7657ae | 468 | (ireason & IO) ? "Read" : "Write"); |
1da177e4 LT |
469 | return ide_do_reset(drive); |
470 | } | |
6e5fa7b8 | 471 | if (!(pc->flags & PC_FLAG_WRITING)) { |
1da177e4 | 472 | /* Reading - Check that we have enough space */ |
8e555123 BP |
473 | temp = pc->xferred + bcount; |
474 | if (temp > pc->req_xfer) { | |
475 | if (temp > pc->buf_size) { | |
568ca927 BZ |
476 | printk(KERN_ERR "%s: The device wants to send " |
477 | "us more data than expected - " | |
478 | "discarding data\n", | |
479 | drive->name); | |
9f87abe8 | 480 | ide_pad_transfer(drive, 0, bcount); |
0078df2e | 481 | |
1da177e4 LT |
482 | ide_set_handler(drive, |
483 | &idefloppy_pc_intr, | |
484 | IDEFLOPPY_WAIT_CMD, | |
485 | NULL); | |
486 | return ide_started; | |
487 | } | |
568ca927 BZ |
488 | debug_log("The device wants to send us more data than " |
489 | "expected - allowing transfer\n"); | |
1da177e4 LT |
490 | } |
491 | } | |
6e5fa7b8 | 492 | if (pc->flags & PC_FLAG_WRITING) |
9567b349 | 493 | xferfunc = hwif->output_data; |
32925e1a | 494 | else |
9567b349 | 495 | xferfunc = hwif->input_data; |
0eea6458 | 496 | |
8e555123 | 497 | if (pc->buf) |
9567b349 | 498 | xferfunc(drive, NULL, pc->cur_pos, bcount); |
0eea6458 | 499 | else |
32925e1a | 500 | ide_floppy_io_buffers(drive, pc, bcount, |
6e5fa7b8 | 501 | !!(pc->flags & PC_FLAG_WRITING)); |
0eea6458 | 502 | |
1da177e4 | 503 | /* Update the current position */ |
8e555123 BP |
504 | pc->xferred += bcount; |
505 | pc->cur_pos += bcount; | |
1da177e4 | 506 | |
32925e1a BP |
507 | /* And set the interrupt handler again */ |
508 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
1da177e4 LT |
509 | return ide_started; |
510 | } | |
511 | ||
1da177e4 | 512 | /* |
0571c7a4 BP |
513 | * What we have here is a classic case of a top half / bottom half interrupt |
514 | * service routine. In interrupt mode, the device sends an interrupt to signal | |
515 | * that it is ready to receive a packet. However, we need to delay about 2-3 | |
516 | * ticks before issuing the packet or we gets in trouble. | |
1da177e4 | 517 | * |
0571c7a4 BP |
518 | * So, follow carefully. transfer_pc1 is called as an interrupt (or directly). |
519 | * In either case, when the device says it's ready for a packet, we schedule | |
520 | * the packet transfer to occur about 2-3 ticks later in transfer_pc2. | |
1da177e4 | 521 | */ |
0571c7a4 | 522 | static int idefloppy_transfer_pc2(ide_drive_t *drive) |
1da177e4 LT |
523 | { |
524 | idefloppy_floppy_t *floppy = drive->driver_data; | |
525 | ||
526 | /* Send the actual packet */ | |
9567b349 BZ |
527 | drive->hwif->output_data(drive, NULL, floppy->pc->c, 12); |
528 | ||
1da177e4 LT |
529 | /* Timeout for the packet command */ |
530 | return IDEFLOPPY_WAIT_CMD; | |
531 | } | |
532 | ||
0571c7a4 | 533 | static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive) |
1da177e4 | 534 | { |
23579a2a | 535 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 536 | idefloppy_floppy_t *floppy = drive->driver_data; |
0b2eea4c BZ |
537 | ide_expiry_t *expiry; |
538 | unsigned int timeout; | |
1da177e4 | 539 | ide_startstop_t startstop; |
8e7657ae | 540 | u8 ireason; |
1da177e4 LT |
541 | |
542 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
568ca927 BZ |
543 | printk(KERN_ERR "%s: Strange, packet command initiated yet " |
544 | "DRQ isn't asserted\n", drive->name); | |
1da177e4 LT |
545 | return startstop; |
546 | } | |
4c3032d8 | 547 | ireason = hwif->INB(hwif->io_ports.nsect_addr); |
8e7657ae | 548 | if ((ireason & CD) == 0 || (ireason & IO)) { |
568ca927 BZ |
549 | printk(KERN_ERR "%s: (IO,CoD) != (0,1) while issuing " |
550 | "a packet command\n", drive->name); | |
1da177e4 LT |
551 | return ide_do_reset(drive); |
552 | } | |
0571c7a4 | 553 | /* |
1da177e4 LT |
554 | * The following delay solves a problem with ATAPI Zip 100 drives |
555 | * where the Busy flag was apparently being deasserted before the | |
556 | * unit was ready to receive data. This was happening on a | |
557 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
558 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
559 | * used until after the packet is moved in about 50 msec. | |
560 | */ | |
0b2eea4c BZ |
561 | if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) { |
562 | timeout = floppy->ticks; | |
563 | expiry = &idefloppy_transfer_pc2; | |
564 | } else { | |
565 | timeout = IDEFLOPPY_WAIT_CMD; | |
566 | expiry = NULL; | |
567 | } | |
568 | ||
569 | ide_set_handler(drive, &idefloppy_pc_intr, timeout, expiry); | |
570 | ||
571 | if ((floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) == 0) | |
572 | /* Send the actual packet */ | |
573 | hwif->output_data(drive, NULL, floppy->pc->c, 12); | |
0078df2e | 574 | |
1da177e4 LT |
575 | return ide_started; |
576 | } | |
577 | ||
d652c138 | 578 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
8e555123 | 579 | struct ide_atapi_pc *pc) |
1da177e4 | 580 | { |
d652c138 | 581 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
582 | if (floppy->sense_key == 0x02 && |
583 | floppy->asc == 0x3a && | |
584 | floppy->ascq == 0x00) | |
d652c138 BP |
585 | return; |
586 | ||
587 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
588 | "asc = %2x, ascq = %2x\n", | |
589 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
590 | floppy->asc, floppy->ascq); | |
591 | ||
1da177e4 LT |
592 | } |
593 | ||
0571c7a4 | 594 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 595 | struct ide_atapi_pc *pc) |
1da177e4 LT |
596 | { |
597 | idefloppy_floppy_t *floppy = drive->driver_data; | |
598 | ide_hwif_t *hwif = drive->hwif; | |
790d1239 | 599 | u16 bcount; |
e5f9f5a8 | 600 | u8 dma; |
1da177e4 | 601 | |
1da177e4 | 602 | if (floppy->failed_pc == NULL && |
30d67099 | 603 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 LT |
604 | floppy->failed_pc = pc; |
605 | /* Set the current packet command */ | |
606 | floppy->pc = pc; | |
607 | ||
757ced89 | 608 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 609 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
610 | ide_floppy_report_error(floppy, pc); |
611 | /* Giving up */ | |
612 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
613 | ||
1da177e4 | 614 | floppy->failed_pc = NULL; |
1b06e92a | 615 | pc->callback(drive); |
1da177e4 LT |
616 | return ide_stopped; |
617 | } | |
618 | ||
bcc77d9c | 619 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
620 | |
621 | pc->retries++; | |
622 | /* We haven't transferred any data yet */ | |
8e555123 BP |
623 | pc->xferred = 0; |
624 | pc->cur_pos = pc->buf; | |
625 | bcount = min(pc->req_xfer, 63 * 1024); | |
1da177e4 | 626 | |
6e5fa7b8 BP |
627 | if (pc->flags & PC_FLAG_DMA_ERROR) { |
628 | pc->flags &= ~PC_FLAG_DMA_ERROR; | |
7469aaf6 | 629 | ide_dma_off(drive); |
6e5fa7b8 | 630 | } |
e5f9f5a8 | 631 | dma = 0; |
1da177e4 | 632 | |
6e5fa7b8 | 633 | if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma) |
5e37bdc0 | 634 | dma = !hwif->dma_ops->dma_setup(drive); |
1da177e4 | 635 | |
9a410e79 | 636 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_DEVICE, bcount, dma); |
1da177e4 | 637 | |
0571c7a4 BP |
638 | if (dma) { |
639 | /* Begin DMA, if necessary */ | |
6e5fa7b8 | 640 | pc->flags |= PC_FLAG_DMA_IN_PROGRESS; |
5e37bdc0 | 641 | hwif->dma_ops->dma_start(drive); |
1da177e4 LT |
642 | } |
643 | ||
6e5fa7b8 | 644 | if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) { |
1da177e4 LT |
645 | /* Issue the packet command */ |
646 | ide_execute_command(drive, WIN_PACKETCMD, | |
0b2eea4c | 647 | &idefloppy_transfer_pc1, |
1da177e4 LT |
648 | IDEFLOPPY_WAIT_CMD, |
649 | NULL); | |
650 | return ide_started; | |
651 | } else { | |
652 | /* Issue the packet command */ | |
1fc14258 | 653 | ide_execute_pkt_cmd(drive); |
0b2eea4c | 654 | return idefloppy_transfer_pc1(drive); |
1da177e4 LT |
655 | } |
656 | } | |
657 | ||
8e555123 | 658 | static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent) |
1da177e4 | 659 | { |
bcc77d9c | 660 | debug_log("creating prevent removal command, prevent = %d\n", prevent); |
1da177e4 LT |
661 | |
662 | idefloppy_init_pc(pc); | |
30d67099 | 663 | pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
1da177e4 LT |
664 | pc->c[4] = prevent; |
665 | } | |
666 | ||
8e555123 | 667 | static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 LT |
668 | { |
669 | idefloppy_init_pc(pc); | |
30d67099 | 670 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
671 | pc->c[7] = 255; |
672 | pc->c[8] = 255; | |
8e555123 | 673 | pc->req_xfer = 255; |
1da177e4 LT |
674 | } |
675 | ||
8e555123 BP |
676 | static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b, |
677 | int l, int flags) | |
1da177e4 LT |
678 | { |
679 | idefloppy_init_pc(pc); | |
30d67099 | 680 | pc->c[0] = GPCMD_FORMAT_UNIT; |
1da177e4 LT |
681 | pc->c[1] = 0x17; |
682 | ||
8e555123 BP |
683 | memset(pc->buf, 0, 12); |
684 | pc->buf[1] = 0xA2; | |
1da177e4 LT |
685 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ |
686 | ||
687 | if (flags & 1) /* Verify bit on... */ | |
8e555123 BP |
688 | pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */ |
689 | pc->buf[3] = 8; | |
1da177e4 | 690 | |
8e555123 BP |
691 | put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4])); |
692 | put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8])); | |
693 | pc->buf_size = 12; | |
6e5fa7b8 | 694 | pc->flags |= PC_FLAG_WRITING; |
1da177e4 LT |
695 | } |
696 | ||
0571c7a4 | 697 | /* A mode sense command is used to "sense" floppy parameters. */ |
8e555123 BP |
698 | static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, |
699 | u8 page_code, u8 type) | |
1da177e4 | 700 | { |
24a5d703 | 701 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 702 | |
1da177e4 | 703 | idefloppy_init_pc(pc); |
30d67099 | 704 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 LT |
705 | pc->c[1] = 0; |
706 | pc->c[2] = page_code + (type << 6); | |
707 | ||
708 | switch (page_code) { | |
0571c7a4 BP |
709 | case IDEFLOPPY_CAPABILITIES_PAGE: |
710 | length += 12; | |
711 | break; | |
712 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
713 | length += 32; | |
714 | break; | |
715 | default: | |
716 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1da177e4 LT |
717 | "in create_mode_sense_cmd\n"); |
718 | } | |
8f622430 | 719 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 720 | pc->req_xfer = length; |
1da177e4 LT |
721 | } |
722 | ||
8e555123 | 723 | static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start) |
1da177e4 LT |
724 | { |
725 | idefloppy_init_pc(pc); | |
30d67099 | 726 | pc->c[0] = GPCMD_START_STOP_UNIT; |
1da177e4 LT |
727 | pc->c[4] = start; |
728 | } | |
729 | ||
8e555123 | 730 | static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc *pc) |
1da177e4 LT |
731 | { |
732 | idefloppy_init_pc(pc); | |
30d67099 | 733 | pc->c[0] = GPCMD_TEST_UNIT_READY; |
1da177e4 LT |
734 | } |
735 | ||
ae7e8ddc | 736 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 737 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 738 | unsigned long sector) |
1da177e4 LT |
739 | { |
740 | int block = sector / floppy->bs_factor; | |
741 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
742 | int cmd = rq_data_dir(rq); | |
743 | ||
ae7e8ddc | 744 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
745 | block, blocks); |
746 | ||
747 | idefloppy_init_pc(pc); | |
ae7e8ddc BP |
748 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
749 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 750 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 751 | |
1da177e4 LT |
752 | pc->rq = rq; |
753 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; | |
4aff5e23 | 754 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 755 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
756 | pc->buf = NULL; |
757 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
6e5fa7b8 | 758 | pc->flags |= PC_FLAG_DMA_RECOMMENDED; |
1da177e4 LT |
759 | } |
760 | ||
0571c7a4 | 761 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 762 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 763 | { |
1da177e4 LT |
764 | idefloppy_init_pc(pc); |
765 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); | |
3d6392cf JA |
766 | pc->rq = rq; |
767 | pc->b_count = rq->data_len; | |
768 | if (rq->data_len && rq_data_dir(rq) == WRITE) | |
6e5fa7b8 | 769 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 770 | pc->buf = rq->data; |
3d6392cf | 771 | if (rq->bio) |
6e5fa7b8 | 772 | pc->flags |= PC_FLAG_DMA_RECOMMENDED; |
3d6392cf JA |
773 | /* |
774 | * possibly problematic, doesn't look like ide-floppy correctly | |
775 | * handled scattered requests if dma fails... | |
776 | */ | |
8e555123 | 777 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
778 | } |
779 | ||
0571c7a4 BP |
780 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
781 | struct request *rq, sector_t block_s) | |
1da177e4 LT |
782 | { |
783 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 784 | struct ide_atapi_pc *pc; |
1da177e4 LT |
785 | unsigned long block = (unsigned long)block_s; |
786 | ||
bcc77d9c | 787 | debug_log("dev: %s, cmd_type: %x, errors: %d\n", |
18cddac3 | 788 | rq->rq_disk ? rq->rq_disk->disk_name : "?", |
bcc77d9c BP |
789 | rq->cmd_type, rq->errors); |
790 | debug_log("sector: %ld, nr_sectors: %ld, " | |
1da177e4 LT |
791 | "current_nr_sectors: %d\n", (long)rq->sector, |
792 | rq->nr_sectors, rq->current_nr_sectors); | |
793 | ||
794 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
795 | if (floppy->failed_pc) |
796 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
797 | else |
798 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
799 | drive->name); | |
c2b2b293 | 800 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
801 | return ide_stopped; |
802 | } | |
4aff5e23 | 803 | if (blk_fs_request(rq)) { |
1da177e4 LT |
804 | if (((long)rq->sector % floppy->bs_factor) || |
805 | (rq->nr_sectors % floppy->bs_factor)) { | |
0571c7a4 BP |
806 | printk(KERN_ERR "%s: unsupported r/w request size\n", |
807 | drive->name); | |
c2b2b293 | 808 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
809 | return ide_stopped; |
810 | } | |
811 | pc = idefloppy_next_pc_storage(drive); | |
812 | idefloppy_create_rw_cmd(floppy, pc, rq, block); | |
4aff5e23 | 813 | } else if (blk_special_request(rq)) { |
8e555123 | 814 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 815 | } else if (blk_pc_request(rq)) { |
1da177e4 | 816 | pc = idefloppy_next_pc_storage(drive); |
3d6392cf | 817 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
818 | } else { |
819 | blk_dump_rq_flags(rq, | |
820 | "ide-floppy: unsupported command in queue"); | |
c2b2b293 | 821 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
822 | return ide_stopped; |
823 | } | |
824 | ||
825 | pc->rq = rq; | |
826 | return idefloppy_issue_pc(drive, pc); | |
827 | } | |
828 | ||
829 | /* | |
0571c7a4 BP |
830 | * Add a special packet command request to the tail of the request queue, |
831 | * and wait for it to be serviced. | |
1da177e4 | 832 | */ |
8e555123 | 833 | static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc) |
1da177e4 LT |
834 | { |
835 | struct ide_floppy_obj *floppy = drive->driver_data; | |
6fe16238 FT |
836 | struct request *rq; |
837 | int error; | |
1da177e4 | 838 | |
6fe16238 FT |
839 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
840 | rq->buffer = (char *) pc; | |
841 | rq->cmd_type = REQ_TYPE_SPECIAL; | |
842 | error = blk_execute_rq(drive->queue, floppy->disk, rq, 0); | |
843 | blk_put_request(rq); | |
1da177e4 | 844 | |
6fe16238 | 845 | return error; |
1da177e4 LT |
846 | } |
847 | ||
848 | /* | |
8e81bbba BP |
849 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
850 | * parameters and use the LBA parameters instead. | |
1da177e4 | 851 | */ |
8e81bbba | 852 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
853 | { |
854 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 855 | struct ide_atapi_pc pc; |
8e81bbba | 856 | u8 *page; |
1da177e4 | 857 | int capacity, lba_capacity; |
8e81bbba BP |
858 | u16 transfer_rate, sector_size, cyls, rpm; |
859 | u8 heads, sectors; | |
1da177e4 | 860 | |
8e81bbba BP |
861 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, |
862 | MODE_SENSE_CURRENT); | |
863 | ||
864 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
865 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" | |
866 | " parameters\n"); | |
1da177e4 LT |
867 | return 1; |
868 | } | |
8e555123 | 869 | floppy->wp = !!(pc.buf[3] & 0x80); |
1da177e4 | 870 | set_disk_ro(floppy->disk, floppy->wp); |
8e555123 | 871 | page = &pc.buf[8]; |
8e81bbba | 872 | |
8e555123 BP |
873 | transfer_rate = be16_to_cpu(*(u16 *)&pc.buf[8 + 2]); |
874 | sector_size = be16_to_cpu(*(u16 *)&pc.buf[8 + 6]); | |
875 | cyls = be16_to_cpu(*(u16 *)&pc.buf[8 + 8]); | |
876 | rpm = be16_to_cpu(*(u16 *)&pc.buf[8 + 28]); | |
877 | heads = pc.buf[8 + 4]; | |
878 | sectors = pc.buf[8 + 5]; | |
8e81bbba BP |
879 | |
880 | capacity = cyls * heads * sectors * sector_size; | |
881 | ||
882 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
883 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
884 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
885 | drive->name, capacity / 1024, cyls, heads, |
886 | sectors, transfer_rate / 8, sector_size, rpm); | |
887 | ||
888 | memcpy(&floppy->flexible_disk_page, page, 32); | |
889 | drive->bios_cyl = cyls; | |
890 | drive->bios_head = heads; | |
891 | drive->bios_sect = sectors; | |
1da177e4 | 892 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 893 | |
1da177e4 LT |
894 | if (capacity < lba_capacity) { |
895 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
896 | "bytes, but the drive only handles %d\n", | |
897 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
898 | floppy->blocks = floppy->block_size ? |
899 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
900 | } |
901 | return 0; | |
902 | } | |
903 | ||
948391d1 | 904 | static int idefloppy_get_sfrp_bit(ide_drive_t *drive) |
1da177e4 LT |
905 | { |
906 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 907 | struct ide_atapi_pc pc; |
1da177e4 LT |
908 | |
909 | floppy->srfp = 0; | |
910 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, | |
911 | MODE_SENSE_CURRENT); | |
912 | ||
6e5fa7b8 | 913 | pc.flags |= PC_FLAG_SUPPRESS_ERROR; |
948391d1 | 914 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 915 | return 1; |
1da177e4 | 916 | |
8e555123 | 917 | floppy->srfp = pc.buf[8 + 2] & 0x40; |
1da177e4 LT |
918 | return (0); |
919 | } | |
920 | ||
921 | /* | |
194ec0c0 BP |
922 | * Determine if a media is present in the floppy drive, and if so, its LBA |
923 | * capacity. | |
1da177e4 | 924 | */ |
194ec0c0 | 925 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
926 | { |
927 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 928 | struct ide_atapi_pc pc; |
194ec0c0 BP |
929 | u8 *cap_desc; |
930 | u8 header_len, desc_cnt; | |
931 | int i, rc = 1, blocks, length; | |
932 | ||
1da177e4 LT |
933 | drive->bios_cyl = 0; |
934 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
935 | floppy->blocks = 0; |
936 | floppy->bs_factor = 1; | |
1da177e4 LT |
937 | set_capacity(floppy->disk, 0); |
938 | ||
939 | idefloppy_create_read_capacity_cmd(&pc); | |
940 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
941 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
942 | return 1; | |
943 | } | |
8e555123 BP |
944 | header_len = pc.buf[3]; |
945 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
946 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
947 | ||
948 | for (i = 0; i < desc_cnt; i++) { | |
949 | unsigned int desc_start = 4 + i*8; | |
950 | ||
8e555123 BP |
951 | blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]); |
952 | length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 BP |
953 | |
954 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
955 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 956 | |
194ec0c0 BP |
957 | if (i) |
958 | continue; | |
959 | /* | |
960 | * the code below is valid only for the 1st descriptor, ie i=0 | |
961 | */ | |
1da177e4 | 962 | |
8e555123 | 963 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
964 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
965 | case CAPACITY_UNFORMATTED: | |
6e5fa7b8 | 966 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) |
0571c7a4 | 967 | /* |
1da177e4 LT |
968 | * If it is not a clik drive, break out |
969 | * (maintains previous driver behaviour) | |
970 | */ | |
971 | break; | |
972 | case CAPACITY_CURRENT: | |
973 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 974 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
975 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
976 | "sector size\n", drive->name, | |
977 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
978 | memcpy(&floppy->cap_desc, cap_desc, 8); |
979 | ||
1da177e4 LT |
980 | if (!length || length % 512) { |
981 | printk(KERN_NOTICE "%s: %d bytes block size " | |
982 | "not supported\n", drive->name, length); | |
983 | } else { | |
194ec0c0 BP |
984 | floppy->blocks = blocks; |
985 | floppy->block_size = length; | |
986 | floppy->bs_factor = length / 512; | |
987 | if (floppy->bs_factor != 1) | |
988 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
989 | "512 bytes block size not " |
990 | "fully supported\n", | |
991 | drive->name); | |
194ec0c0 | 992 | rc = 0; |
1da177e4 LT |
993 | } |
994 | break; | |
995 | case CAPACITY_NO_CARTRIDGE: | |
996 | /* | |
997 | * This is a KERN_ERR so it appears on screen | |
998 | * for the user to see | |
999 | */ | |
1000 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
1001 | break; | |
1002 | case CAPACITY_INVALID: | |
1003 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
1004 | "in drive\n", drive->name); | |
1005 | break; | |
1006 | } | |
194ec0c0 | 1007 | debug_log("Descriptor 0 Code: %d\n", |
8e555123 | 1008 | pc.buf[desc_start + 4] & 0x03); |
1da177e4 LT |
1009 | } |
1010 | ||
1011 | /* Clik! disk does not support get_flexible_disk_page */ | |
6e5fa7b8 | 1012 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) |
8e81bbba | 1013 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 LT |
1014 | |
1015 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); | |
1016 | return rc; | |
1017 | } | |
1018 | ||
1019 | /* | |
194ec0c0 BP |
1020 | * Obtain the list of formattable capacities. |
1021 | * Very similar to ide_floppy_get_capacity, except that we push the capacity | |
1022 | * descriptors to userland, instead of our own structures. | |
1023 | * | |
1024 | * Userland gives us the following structure: | |
1025 | * | |
1026 | * struct idefloppy_format_capacities { | |
1027 | * int nformats; | |
1028 | * struct { | |
1029 | * int nblocks; | |
1030 | * int blocksize; | |
1031 | * } formats[]; | |
1032 | * }; | |
1033 | * | |
1034 | * userland initializes nformats to the number of allocated formats[] records. | |
1035 | * On exit we set nformats to the number of records we've actually initialized. | |
1036 | */ | |
1da177e4 | 1037 | |
194ec0c0 | 1038 | static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
1da177e4 | 1039 | { |
8e555123 | 1040 | struct ide_atapi_pc pc; |
194ec0c0 BP |
1041 | u8 header_len, desc_cnt; |
1042 | int i, blocks, length, u_array_size, u_index; | |
1da177e4 LT |
1043 | int __user *argp; |
1044 | ||
1045 | if (get_user(u_array_size, arg)) | |
1046 | return (-EFAULT); | |
1047 | ||
1048 | if (u_array_size <= 0) | |
1049 | return (-EINVAL); | |
1050 | ||
1051 | idefloppy_create_read_capacity_cmd(&pc); | |
1052 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1053 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
194ec0c0 BP |
1054 | return (-EIO); |
1055 | } | |
8e555123 | 1056 | header_len = pc.buf[3]; |
194ec0c0 | 1057 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
1da177e4 LT |
1058 | |
1059 | u_index = 0; | |
1060 | argp = arg + 1; | |
1061 | ||
1062 | /* | |
194ec0c0 BP |
1063 | * We always skip the first capacity descriptor. That's the current |
1064 | * capacity. We are interested in the remaining descriptors, the | |
1065 | * formattable capacities. | |
1066 | */ | |
1067 | for (i = 1; i < desc_cnt; i++) { | |
1068 | unsigned int desc_start = 4 + i*8; | |
1da177e4 | 1069 | |
1da177e4 LT |
1070 | if (u_index >= u_array_size) |
1071 | break; /* User-supplied buffer too small */ | |
1da177e4 | 1072 | |
8e555123 BP |
1073 | blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]); |
1074 | length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]); | |
1da177e4 LT |
1075 | |
1076 | if (put_user(blocks, argp)) | |
1077 | return(-EFAULT); | |
1078 | ++argp; | |
1079 | ||
1080 | if (put_user(length, argp)) | |
1081 | return (-EFAULT); | |
1082 | ++argp; | |
1083 | ||
1084 | ++u_index; | |
1085 | } | |
1086 | ||
1087 | if (put_user(u_index, arg)) | |
1088 | return (-EFAULT); | |
1089 | return (0); | |
1090 | } | |
1091 | ||
1da177e4 | 1092 | /* |
0571c7a4 BP |
1093 | * Get ATAPI_FORMAT_UNIT progress indication. |
1094 | * | |
1095 | * Userland gives a pointer to an int. The int is set to a progress | |
1096 | * indicator 0-65536, with 65536=100%. | |
1097 | * | |
1098 | * If the drive does not support format progress indication, we just check | |
1099 | * the dsc bit, and return either 0 or 65536. | |
1100 | */ | |
1da177e4 LT |
1101 | |
1102 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) | |
1103 | { | |
1104 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e555123 | 1105 | struct ide_atapi_pc pc; |
1da177e4 LT |
1106 | int progress_indication = 0x10000; |
1107 | ||
1108 | if (floppy->srfp) { | |
1109 | idefloppy_create_request_sense_cmd(&pc); | |
0571c7a4 | 1110 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 1111 | return (-EIO); |
1da177e4 LT |
1112 | |
1113 | if (floppy->sense_key == 2 && | |
1114 | floppy->asc == 4 && | |
0571c7a4 | 1115 | floppy->ascq == 4) |
1da177e4 | 1116 | progress_indication = floppy->progress_indication; |
0571c7a4 BP |
1117 | |
1118 | /* Else assume format_unit has finished, and we're at 0x10000 */ | |
1da177e4 | 1119 | } else { |
1da177e4 | 1120 | unsigned long flags; |
22c525b9 | 1121 | u8 stat; |
1da177e4 LT |
1122 | |
1123 | local_irq_save(flags); | |
c47137a9 | 1124 | stat = ide_read_status(drive); |
1da177e4 LT |
1125 | local_irq_restore(flags); |
1126 | ||
22c525b9 | 1127 | progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000; |
1da177e4 LT |
1128 | } |
1129 | if (put_user(progress_indication, arg)) | |
1130 | return (-EFAULT); | |
1131 | ||
1132 | return (0); | |
1133 | } | |
1134 | ||
0571c7a4 | 1135 | static sector_t idefloppy_capacity(ide_drive_t *drive) |
1da177e4 LT |
1136 | { |
1137 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1138 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
1139 | ||
1140 | return capacity; | |
1141 | } | |
1142 | ||
1143 | /* | |
f373bd82 BP |
1144 | * Check whether we can support a drive, based on the ATAPI IDENTIFY command |
1145 | * results. | |
1da177e4 | 1146 | */ |
f373bd82 | 1147 | static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id) |
1da177e4 | 1148 | { |
3ad6776c BP |
1149 | u8 gcw[2]; |
1150 | u8 device_type, protocol, removable, drq_type, packet_size; | |
1da177e4 LT |
1151 | |
1152 | *((u16 *) &gcw) = id->config; | |
1153 | ||
3ad6776c BP |
1154 | device_type = gcw[1] & 0x1F; |
1155 | removable = (gcw[0] & 0x80) >> 7; | |
1156 | protocol = (gcw[1] & 0xC0) >> 6; | |
1157 | drq_type = (gcw[0] & 0x60) >> 5; | |
1158 | packet_size = gcw[0] & 0x03; | |
1159 | ||
1da177e4 LT |
1160 | #ifdef CONFIG_PPC |
1161 | /* kludge for Apple PowerBook internal zip */ | |
3ad6776c BP |
1162 | if (device_type == 5 && |
1163 | !strstr(id->model, "CD-ROM") && strstr(id->model, "ZIP")) | |
1164 | device_type = 0; | |
1da177e4 LT |
1165 | #endif |
1166 | ||
3ad6776c | 1167 | if (protocol != 2) |
f373bd82 | 1168 | printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n", |
3ad6776c BP |
1169 | protocol); |
1170 | else if (device_type != 0) | |
f373bd82 | 1171 | printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set " |
3ad6776c BP |
1172 | "to floppy\n", device_type); |
1173 | else if (!removable) | |
1da177e4 | 1174 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); |
3ad6776c | 1175 | else if (drq_type == 3) |
f373bd82 | 1176 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not " |
3ad6776c BP |
1177 | "supported\n", drq_type); |
1178 | else if (packet_size != 0) | |
f373bd82 | 1179 | printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 " |
3ad6776c BP |
1180 | "bytes\n", packet_size); |
1181 | else | |
1da177e4 LT |
1182 | return 1; |
1183 | return 0; | |
1184 | } | |
1185 | ||
7662d046 | 1186 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1187 | static void idefloppy_add_settings(ide_drive_t *drive) |
1188 | { | |
1189 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1190 | ||
0571c7a4 BP |
1191 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, |
1192 | &drive->bios_cyl, NULL); | |
1193 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, | |
1194 | &drive->bios_head, NULL); | |
1195 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, | |
1196 | &drive->bios_sect, NULL); | |
1197 | ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, | |
1198 | &floppy->ticks, NULL); | |
1da177e4 | 1199 | } |
7662d046 BZ |
1200 | #else |
1201 | static inline void idefloppy_add_settings(ide_drive_t *drive) { ; } | |
1202 | #endif | |
1da177e4 | 1203 | |
0571c7a4 | 1204 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
1da177e4 | 1205 | { |
3ad6776c | 1206 | u8 gcw[2]; |
1da177e4 LT |
1207 | |
1208 | *((u16 *) &gcw) = drive->id->config; | |
1209 | floppy->pc = floppy->pc_stack; | |
3ad6776c BP |
1210 | |
1211 | if (((gcw[0] & 0x60) >> 5) == 1) | |
6e5fa7b8 | 1212 | floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT; |
1da177e4 | 1213 | /* |
0571c7a4 BP |
1214 | * We used to check revisions here. At this point however I'm giving up. |
1215 | * Just assume they are all broken, its easier. | |
1da177e4 | 1216 | * |
0571c7a4 BP |
1217 | * The actual reason for the workarounds was likely a driver bug after |
1218 | * all rather than a firmware bug, and the workaround below used to hide | |
1219 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
1220 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 1221 | */ |
1da177e4 | 1222 | if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { |
6e5fa7b8 | 1223 | floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE; |
1da177e4 LT |
1224 | /* This value will be visible in the /proc/ide/hdx/settings */ |
1225 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
1226 | blk_queue_max_sectors(drive->queue, 64); | |
1227 | } | |
1228 | ||
1229 | /* | |
0571c7a4 BP |
1230 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
1231 | * nasty clicking noises without it, so please don't remove this. | |
1232 | */ | |
1da177e4 LT |
1233 | if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { |
1234 | blk_queue_max_sectors(drive->queue, 64); | |
6e5fa7b8 | 1235 | floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE; |
1da177e4 LT |
1236 | } |
1237 | ||
194ec0c0 | 1238 | (void) ide_floppy_get_capacity(drive); |
1da177e4 LT |
1239 | idefloppy_add_settings(drive); |
1240 | } | |
1241 | ||
4031bbe4 | 1242 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
1243 | { |
1244 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1245 | struct gendisk *g = floppy->disk; | |
1246 | ||
7662d046 | 1247 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
1248 | |
1249 | del_gendisk(g); | |
1250 | ||
1251 | ide_floppy_put(floppy); | |
1da177e4 LT |
1252 | } |
1253 | ||
9a24b63d | 1254 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 LT |
1255 | { |
1256 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
1257 | ide_drive_t *drive = floppy->drive; | |
1258 | struct gendisk *g = floppy->disk; | |
1259 | ||
1260 | drive->driver_data = NULL; | |
1261 | g->private_data = NULL; | |
1262 | put_disk(g); | |
1263 | kfree(floppy); | |
1264 | } | |
1265 | ||
ecfd80e4 | 1266 | #ifdef CONFIG_IDE_PROC_FS |
0571c7a4 BP |
1267 | static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, |
1268 | int count, int *eof, void *data) | |
1da177e4 LT |
1269 | { |
1270 | ide_drive_t*drive = (ide_drive_t *)data; | |
1271 | int len; | |
1272 | ||
0571c7a4 BP |
1273 | len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); |
1274 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
1275 | } |
1276 | ||
1277 | static ide_proc_entry_t idefloppy_proc[] = { | |
0571c7a4 BP |
1278 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
1279 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1da177e4 LT |
1280 | { NULL, 0, NULL, NULL } |
1281 | }; | |
ecfd80e4 | 1282 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 1283 | |
4031bbe4 | 1284 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 1285 | |
1da177e4 | 1286 | static ide_driver_t idefloppy_driver = { |
8604affd | 1287 | .gen_driver = { |
4ef3b8f4 | 1288 | .owner = THIS_MODULE, |
8604affd BZ |
1289 | .name = "ide-floppy", |
1290 | .bus = &ide_bus_type, | |
8604affd | 1291 | }, |
4031bbe4 RK |
1292 | .probe = ide_floppy_probe, |
1293 | .remove = ide_floppy_remove, | |
1da177e4 LT |
1294 | .version = IDEFLOPPY_VERSION, |
1295 | .media = ide_floppy, | |
1da177e4 | 1296 | .supports_dsc_overlap = 0, |
1da177e4 | 1297 | .do_request = idefloppy_do_request, |
c2b2b293 | 1298 | .end_request = idefloppy_end_request, |
1da177e4 LT |
1299 | .error = __ide_error, |
1300 | .abort = __ide_abort, | |
7662d046 | 1301 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1302 | .proc = idefloppy_proc, |
7662d046 | 1303 | #endif |
1da177e4 LT |
1304 | }; |
1305 | ||
1306 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
1307 | { | |
1308 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1309 | struct ide_floppy_obj *floppy; | |
1310 | ide_drive_t *drive; | |
8e555123 | 1311 | struct ide_atapi_pc pc; |
1da177e4 LT |
1312 | int ret = 0; |
1313 | ||
bcc77d9c | 1314 | debug_log("Reached %s\n", __func__); |
1da177e4 | 1315 | |
0571c7a4 BP |
1316 | floppy = ide_floppy_get(disk); |
1317 | if (!floppy) | |
1da177e4 LT |
1318 | return -ENXIO; |
1319 | ||
1320 | drive = floppy->drive; | |
1321 | ||
c94964a4 | 1322 | floppy->openers++; |
1da177e4 | 1323 | |
c94964a4 | 1324 | if (floppy->openers == 1) { |
6e5fa7b8 | 1325 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
1326 | /* Just in case */ |
1327 | ||
1328 | idefloppy_create_test_unit_ready_cmd(&pc); | |
1329 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1330 | idefloppy_create_start_stop_cmd(&pc, 1); | |
1331 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1332 | } | |
1333 | ||
194ec0c0 | 1334 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
1335 | && (filp->f_flags & O_NDELAY) == 0 |
1336 | /* | |
0571c7a4 BP |
1337 | * Allow O_NDELAY to open a drive without a disk, or with an |
1338 | * unreadable disk, so that we can get the format capacity | |
1339 | * of the drive or begin the format - Sam | |
1340 | */ | |
1da177e4 | 1341 | ) { |
1da177e4 LT |
1342 | ret = -EIO; |
1343 | goto out_put_floppy; | |
1344 | } | |
1345 | ||
1346 | if (floppy->wp && (filp->f_mode & 2)) { | |
1da177e4 LT |
1347 | ret = -EROFS; |
1348 | goto out_put_floppy; | |
1349 | } | |
6e5fa7b8 | 1350 | floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED; |
1da177e4 | 1351 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
6e5fa7b8 | 1352 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1353 | idefloppy_create_prevent_cmd(&pc, 1); |
1354 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1355 | } | |
1356 | check_disk_change(inode->i_bdev); | |
6e5fa7b8 | 1357 | } else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
1358 | ret = -EBUSY; |
1359 | goto out_put_floppy; | |
1360 | } | |
1361 | return 0; | |
1362 | ||
1363 | out_put_floppy: | |
c94964a4 | 1364 | floppy->openers--; |
1da177e4 LT |
1365 | ide_floppy_put(floppy); |
1366 | return ret; | |
1367 | } | |
1368 | ||
1369 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
1370 | { | |
1371 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1372 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1373 | ide_drive_t *drive = floppy->drive; | |
8e555123 | 1374 | struct ide_atapi_pc pc; |
bcc77d9c BP |
1375 | |
1376 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 1377 | |
c94964a4 | 1378 | if (floppy->openers == 1) { |
1da177e4 | 1379 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
6e5fa7b8 | 1380 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1381 | idefloppy_create_prevent_cmd(&pc, 0); |
1382 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1383 | } | |
1384 | ||
6e5fa7b8 | 1385 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 1386 | } |
c94964a4 BZ |
1387 | |
1388 | floppy->openers--; | |
1da177e4 LT |
1389 | |
1390 | ide_floppy_put(floppy); | |
1391 | ||
1392 | return 0; | |
1393 | } | |
1394 | ||
a885c8c4 CH |
1395 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1396 | { | |
1397 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1398 | ide_drive_t *drive = floppy->drive; | |
1399 | ||
1400 | geo->heads = drive->bios_head; | |
1401 | geo->sectors = drive->bios_sect; | |
1402 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1403 | return 0; | |
1404 | } | |
1405 | ||
8e555123 BP |
1406 | static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy, |
1407 | struct ide_atapi_pc *pc, unsigned long arg, unsigned int cmd) | |
20bf7bda BP |
1408 | { |
1409 | if (floppy->openers > 1) | |
1410 | return -EBUSY; | |
1411 | ||
1412 | /* The IOMEGA Clik! Drive doesn't support this command - | |
1413 | * no room for an eject mechanism */ | |
6e5fa7b8 | 1414 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
20bf7bda BP |
1415 | int prevent = arg ? 1 : 0; |
1416 | ||
1417 | if (cmd == CDROMEJECT) | |
1418 | prevent = 0; | |
1419 | ||
1420 | idefloppy_create_prevent_cmd(pc, prevent); | |
1421 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1422 | } | |
1423 | ||
1424 | if (cmd == CDROMEJECT) { | |
1425 | idefloppy_create_start_stop_cmd(pc, 2); | |
1426 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1427 | } | |
1428 | ||
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | static int ide_floppy_format_unit(idefloppy_floppy_t *floppy, | |
1433 | int __user *arg) | |
1434 | { | |
1435 | int blocks, length, flags, err = 0; | |
8e555123 | 1436 | struct ide_atapi_pc pc; |
20bf7bda BP |
1437 | |
1438 | if (floppy->openers > 1) { | |
1439 | /* Don't format if someone is using the disk */ | |
6e5fa7b8 | 1440 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1441 | return -EBUSY; |
1442 | } | |
1443 | ||
6e5fa7b8 | 1444 | floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1445 | |
1446 | /* | |
1447 | * Send ATAPI_FORMAT_UNIT to the drive. | |
1448 | * | |
1449 | * Userland gives us the following structure: | |
1450 | * | |
1451 | * struct idefloppy_format_command { | |
1452 | * int nblocks; | |
1453 | * int blocksize; | |
1454 | * int flags; | |
1455 | * } ; | |
1456 | * | |
1457 | * flags is a bitmask, currently, the only defined flag is: | |
1458 | * | |
1459 | * 0x01 - verify media after format. | |
1460 | */ | |
1461 | if (get_user(blocks, arg) || | |
1462 | get_user(length, arg+1) || | |
1463 | get_user(flags, arg+2)) { | |
1464 | err = -EFAULT; | |
1465 | goto out; | |
1466 | } | |
1467 | ||
1468 | (void) idefloppy_get_sfrp_bit(floppy->drive); | |
1469 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); | |
1470 | ||
1471 | if (idefloppy_queue_pc_tail(floppy->drive, &pc)) | |
1472 | err = -EIO; | |
1473 | ||
1474 | out: | |
1475 | if (err) | |
6e5fa7b8 | 1476 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1477 | return err; |
1478 | } | |
1479 | ||
1480 | ||
1da177e4 LT |
1481 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
1482 | unsigned int cmd, unsigned long arg) | |
1483 | { | |
1484 | struct block_device *bdev = inode->i_bdev; | |
1485 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1486 | ide_drive_t *drive = floppy->drive; | |
8e555123 | 1487 | struct ide_atapi_pc pc; |
1da177e4 | 1488 | void __user *argp = (void __user *)arg; |
07203f64 | 1489 | int err; |
1da177e4 LT |
1490 | |
1491 | switch (cmd) { | |
1492 | case CDROMEJECT: | |
1da177e4 LT |
1493 | /* fall through */ |
1494 | case CDROM_LOCKDOOR: | |
20bf7bda | 1495 | return ide_floppy_lockdoor(floppy, &pc, arg, cmd); |
1da177e4 LT |
1496 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: |
1497 | return 0; | |
1498 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
194ec0c0 | 1499 | return ide_floppy_get_format_capacities(drive, argp); |
1da177e4 | 1500 | case IDEFLOPPY_IOCTL_FORMAT_START: |
1da177e4 LT |
1501 | if (!(file->f_mode & 2)) |
1502 | return -EPERM; | |
1503 | ||
20bf7bda | 1504 | return ide_floppy_format_unit(floppy, (int __user *)arg); |
1da177e4 LT |
1505 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: |
1506 | return idefloppy_get_format_progress(drive, argp); | |
1507 | } | |
89636af2 BZ |
1508 | |
1509 | /* | |
1510 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
1511 | * and CDROM_SEND_PACKET (legacy) ioctls | |
1512 | */ | |
1513 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
1514 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
1515 | bdev->bd_disk, cmd, argp); | |
1516 | else | |
1517 | err = -ENOTTY; | |
1518 | ||
1519 | if (err == -ENOTTY) | |
1520 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1521 | ||
1522 | return err; | |
1da177e4 LT |
1523 | } |
1524 | ||
1525 | static int idefloppy_media_changed(struct gendisk *disk) | |
1526 | { | |
1527 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1528 | ide_drive_t *drive = floppy->drive; | |
6e5fa7b8 | 1529 | int ret; |
1da177e4 LT |
1530 | |
1531 | /* do not scan partitions twice if this is a removable device */ | |
1532 | if (drive->attach) { | |
1533 | drive->attach = 0; | |
1534 | return 0; | |
1535 | } | |
6e5fa7b8 BP |
1536 | ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED); |
1537 | floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED; | |
1538 | return ret; | |
1da177e4 LT |
1539 | } |
1540 | ||
1541 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
1542 | { | |
1543 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1544 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
1545 | return 0; | |
1546 | } | |
1547 | ||
1548 | static struct block_device_operations idefloppy_ops = { | |
52d3ccf7 PC |
1549 | .owner = THIS_MODULE, |
1550 | .open = idefloppy_open, | |
1551 | .release = idefloppy_release, | |
1552 | .ioctl = idefloppy_ioctl, | |
1553 | .getgeo = idefloppy_getgeo, | |
1554 | .media_changed = idefloppy_media_changed, | |
1555 | .revalidate_disk = idefloppy_revalidate_disk | |
1da177e4 LT |
1556 | }; |
1557 | ||
4031bbe4 | 1558 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
1559 | { |
1560 | idefloppy_floppy_t *floppy; | |
1561 | struct gendisk *g; | |
1562 | ||
1563 | if (!strstr("ide-floppy", drive->driver_req)) | |
1564 | goto failed; | |
1565 | if (!drive->present) | |
1566 | goto failed; | |
1567 | if (drive->media != ide_floppy) | |
1568 | goto failed; | |
0571c7a4 BP |
1569 | if (!idefloppy_identify_device(drive, drive->id)) { |
1570 | printk(KERN_ERR "ide-floppy: %s: not supported by this version" | |
1571 | " of ide-floppy\n", drive->name); | |
1da177e4 LT |
1572 | goto failed; |
1573 | } | |
1574 | if (drive->scsi) { | |
0571c7a4 BP |
1575 | printk(KERN_INFO "ide-floppy: passing drive %s to ide-scsi" |
1576 | " emulation.\n", drive->name); | |
1da177e4 LT |
1577 | goto failed; |
1578 | } | |
0571c7a4 BP |
1579 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
1580 | if (!floppy) { | |
1581 | printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" | |
1582 | " structure\n", drive->name); | |
1da177e4 LT |
1583 | goto failed; |
1584 | } | |
1585 | ||
1586 | g = alloc_disk(1 << PARTN_BITS); | |
1587 | if (!g) | |
1588 | goto out_free_floppy; | |
1589 | ||
1590 | ide_init_disk(g, drive); | |
1591 | ||
7662d046 | 1592 | ide_proc_register_driver(drive, &idefloppy_driver); |
1da177e4 | 1593 | |
1da177e4 LT |
1594 | kref_init(&floppy->kref); |
1595 | ||
1596 | floppy->drive = drive; | |
1597 | floppy->driver = &idefloppy_driver; | |
1598 | floppy->disk = g; | |
1599 | ||
1600 | g->private_data = &floppy->driver; | |
1601 | ||
1602 | drive->driver_data = floppy; | |
1603 | ||
0571c7a4 | 1604 | idefloppy_setup(drive, floppy); |
8604affd | 1605 | |
1da177e4 LT |
1606 | g->minors = 1 << PARTN_BITS; |
1607 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
1608 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
1609 | g->fops = &idefloppy_ops; | |
1610 | drive->attach = 1; | |
1611 | add_disk(g); | |
1612 | return 0; | |
1613 | ||
1da177e4 LT |
1614 | out_free_floppy: |
1615 | kfree(floppy); | |
1616 | failed: | |
8604affd | 1617 | return -ENODEV; |
1da177e4 LT |
1618 | } |
1619 | ||
0571c7a4 | 1620 | static void __exit idefloppy_exit(void) |
1da177e4 | 1621 | { |
8604affd | 1622 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1623 | } |
1624 | ||
17514e8a | 1625 | static int __init idefloppy_init(void) |
1da177e4 LT |
1626 | { |
1627 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 1628 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1629 | } |
1630 | ||
263756ec | 1631 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
1632 | module_init(idefloppy_init); |
1633 | module_exit(idefloppy_exit); | |
1634 | MODULE_LICENSE("GPL"); | |
0571c7a4 BP |
1635 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
1636 |