Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
d3f20848 BP |
2 | * IDE ATAPI floppy driver. |
3 | * | |
59bca8cc BZ |
4 | * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> |
5 | * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> | |
6 | * Copyright (C) 2005 Bartlomiej Zolnierkiewicz | |
0571c7a4 | 7 | * |
1da177e4 LT |
8 | * This driver supports the following IDE floppy drives: |
9 | * | |
10 | * LS-120/240 SuperDisk | |
11 | * Iomega Zip 100/250 | |
12 | * Iomega PC Card Clik!/PocketZip | |
13 | * | |
d3f20848 BP |
14 | * For a historical changelog see |
15 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 | |
1da177e4 LT |
16 | */ |
17 | ||
51509eec | 18 | #define DRV_NAME "ide-floppy" |
7b355726 | 19 | #define PFX DRV_NAME ": " |
51509eec | 20 | |
fc6c5bc7 | 21 | #define IDEFLOPPY_VERSION "1.00" |
1da177e4 | 22 | |
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/types.h> | |
25 | #include <linux/string.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/timer.h> | |
29 | #include <linux/mm.h> | |
30 | #include <linux/interrupt.h> | |
31 | #include <linux/major.h> | |
32 | #include <linux/errno.h> | |
33 | #include <linux/genhd.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/cdrom.h> | |
36 | #include <linux/ide.h> | |
3ceca727 | 37 | #include <linux/hdreg.h> |
1da177e4 | 38 | #include <linux/bitops.h> |
cf8b8975 | 39 | #include <linux/mutex.h> |
b98b3409 | 40 | #include <linux/scatterlist.h> |
1da177e4 | 41 | |
89636af2 BZ |
42 | #include <scsi/scsi_ioctl.h> |
43 | ||
1da177e4 | 44 | #include <asm/byteorder.h> |
7e8b163b BP |
45 | #include <linux/irq.h> |
46 | #include <linux/uaccess.h> | |
47 | #include <linux/io.h> | |
1da177e4 LT |
48 | #include <asm/unaligned.h> |
49 | ||
0127854d BZ |
50 | #include "ide-floppy.h" |
51 | ||
0964dbe6 BP |
52 | /* module parameters */ |
53 | static unsigned long debug_mask; | |
54 | module_param(debug_mask, ulong, 0644); | |
55 | ||
f373bd82 | 56 | /* define to see debug info */ |
7b355726 | 57 | #define IDEFLOPPY_DEBUG_LOG 0 |
1da177e4 LT |
58 | |
59 | #if IDEFLOPPY_DEBUG_LOG | |
7b355726 | 60 | #define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, args) |
1da177e4 | 61 | #else |
7b355726 | 62 | #define ide_debug_log(lvl, fmt, args...) do {} while (0) |
1da177e4 LT |
63 | #endif |
64 | ||
1da177e4 | 65 | /* |
0571c7a4 BP |
66 | * After each failed packet command we issue a request sense command and retry |
67 | * the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
1da177e4 LT |
68 | */ |
69 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
70 | ||
194ec0c0 | 71 | /* format capacities descriptor codes */ |
1da177e4 LT |
72 | #define CAPACITY_INVALID 0x00 |
73 | #define CAPACITY_UNFORMATTED 0x01 | |
74 | #define CAPACITY_CURRENT 0x02 | |
75 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
76 | ||
baf08f0b BZ |
77 | /* |
78 | * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit | |
79 | * was apparently being deasserted before the unit was ready to receive data. | |
80 | */ | |
81 | #define IDEFLOPPY_PC_DELAY (HZ/20) /* default delay for ZIP 100 (50ms) */ | |
1da177e4 | 82 | |
0571c7a4 | 83 | /* Error code returned in rq->errors to the higher part of the driver. */ |
1da177e4 LT |
84 | #define IDEFLOPPY_ERROR_GENERAL 101 |
85 | ||
cf8b8975 | 86 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 | 87 | |
08da591e BZ |
88 | static void idefloppy_cleanup_obj(struct kref *); |
89 | ||
1da177e4 LT |
90 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) |
91 | { | |
92 | struct ide_floppy_obj *floppy = NULL; | |
93 | ||
cf8b8975 | 94 | mutex_lock(&idefloppy_ref_mutex); |
5aeddf90 | 95 | floppy = ide_drv_g(disk, ide_floppy_obj); |
08da591e | 96 | if (floppy) { |
d3e33ff5 | 97 | if (ide_device_get(floppy->drive)) |
08da591e | 98 | floppy = NULL; |
d3e33ff5 BZ |
99 | else |
100 | kref_get(&floppy->kref); | |
08da591e | 101 | } |
cf8b8975 | 102 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
103 | return floppy; |
104 | } | |
105 | ||
1da177e4 LT |
106 | static void ide_floppy_put(struct ide_floppy_obj *floppy) |
107 | { | |
d3e33ff5 BZ |
108 | ide_drive_t *drive = floppy->drive; |
109 | ||
cf8b8975 | 110 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 111 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
d3e33ff5 | 112 | ide_device_put(drive); |
cf8b8975 | 113 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
114 | } |
115 | ||
1da177e4 | 116 | /* |
0571c7a4 BP |
117 | * Used to finish servicing a request. For read/write requests, we will call |
118 | * ide_end_request to pass to the next buffer. | |
1da177e4 | 119 | */ |
c2b2b293 | 120 | static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
1da177e4 LT |
121 | { |
122 | idefloppy_floppy_t *floppy = drive->driver_data; | |
123 | struct request *rq = HWGROUP(drive)->rq; | |
124 | int error; | |
125 | ||
7b355726 | 126 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1da177e4 LT |
127 | |
128 | switch (uptodate) { | |
7b355726 BP |
129 | case 0: |
130 | error = IDEFLOPPY_ERROR_GENERAL; | |
131 | break; | |
132 | ||
133 | case 1: | |
134 | error = 0; | |
135 | break; | |
136 | ||
137 | default: | |
138 | error = uptodate; | |
1da177e4 | 139 | } |
7b355726 | 140 | |
1da177e4 LT |
141 | if (error) |
142 | floppy->failed_pc = NULL; | |
143 | /* Why does this happen? */ | |
144 | if (!rq) | |
145 | return 0; | |
4aff5e23 | 146 | if (!blk_special_request(rq)) { |
1da177e4 LT |
147 | /* our real local end request function */ |
148 | ide_end_request(drive, uptodate, nsecs); | |
149 | return 0; | |
150 | } | |
151 | rq->errors = error; | |
152 | /* fixme: need to move this local also */ | |
153 | ide_end_drive_cmd(drive, 0, 0); | |
154 | return 0; | |
155 | } | |
156 | ||
8e555123 BP |
157 | static void idefloppy_update_buffers(ide_drive_t *drive, |
158 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
159 | { |
160 | struct request *rq = pc->rq; | |
161 | struct bio *bio = rq->bio; | |
162 | ||
163 | while ((bio = rq->bio) != NULL) | |
c2b2b293 | 164 | idefloppy_end_request(drive, 1, 0); |
1da177e4 LT |
165 | } |
166 | ||
b14c7212 | 167 | static void ide_floppy_callback(ide_drive_t *drive, int dsc) |
1da177e4 LT |
168 | { |
169 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2b9efba4 | 170 | struct ide_atapi_pc *pc = drive->pc; |
81f49382 | 171 | int uptodate = pc->error ? 0 : 1; |
1da177e4 | 172 | |
7b355726 | 173 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
bcc77d9c | 174 | |
dd2e9a03 BZ |
175 | if (floppy->failed_pc == pc) |
176 | floppy->failed_pc = NULL; | |
177 | ||
81f49382 BP |
178 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
179 | (pc->rq && blk_pc_request(pc->rq))) | |
180 | uptodate = 1; /* FIXME */ | |
181 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
2b9efba4 | 182 | u8 *buf = pc->buf; |
a6ff2d3b | 183 | |
81f49382 BP |
184 | if (!pc->error) { |
185 | floppy->sense_key = buf[2] & 0x0F; | |
186 | floppy->asc = buf[12]; | |
187 | floppy->ascq = buf[13]; | |
188 | floppy->progress_indication = buf[15] & 0x80 ? | |
189 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 190 | |
81f49382 | 191 | if (floppy->failed_pc) |
7b355726 BP |
192 | ide_debug_log(IDE_DBG_PC, "pc = %x, ", |
193 | floppy->failed_pc->c[0]); | |
bcc77d9c | 194 | |
7b355726 BP |
195 | ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x," |
196 | "ascq = %x\n", floppy->sense_key, | |
197 | floppy->asc, floppy->ascq); | |
81f49382 | 198 | } else |
7b355726 BP |
199 | printk(KERN_ERR PFX "Error in REQUEST SENSE itself - " |
200 | "Aborting request!\n"); | |
81f49382 | 201 | } |
1da177e4 | 202 | |
81f49382 | 203 | idefloppy_end_request(drive, uptodate, 0); |
1da177e4 LT |
204 | } |
205 | ||
d652c138 | 206 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
8e555123 | 207 | struct ide_atapi_pc *pc) |
1da177e4 | 208 | { |
d652c138 | 209 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
210 | if (floppy->sense_key == 0x02 && |
211 | floppy->asc == 0x3a && | |
212 | floppy->ascq == 0x00) | |
d652c138 BP |
213 | return; |
214 | ||
7b355726 | 215 | printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, " |
d652c138 BP |
216 | "asc = %2x, ascq = %2x\n", |
217 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
218 | floppy->asc, floppy->ascq); | |
219 | ||
1da177e4 LT |
220 | } |
221 | ||
0571c7a4 | 222 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 223 | struct ide_atapi_pc *pc) |
1da177e4 LT |
224 | { |
225 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1da177e4 | 226 | |
1da177e4 | 227 | if (floppy->failed_pc == NULL && |
30d67099 | 228 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 | 229 | floppy->failed_pc = pc; |
2b9efba4 | 230 | |
1da177e4 | 231 | /* Set the current packet command */ |
2b9efba4 | 232 | drive->pc = pc; |
1da177e4 | 233 | |
757ced89 | 234 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 235 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
236 | ide_floppy_report_error(floppy, pc); |
237 | /* Giving up */ | |
238 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
239 | ||
1da177e4 | 240 | floppy->failed_pc = NULL; |
b14c7212 | 241 | drive->pc_callback(drive, 0); |
1da177e4 LT |
242 | return ide_stopped; |
243 | } | |
244 | ||
7b355726 | 245 | ide_debug_log(IDE_DBG_FUNC, "%s: Retry #%d\n", __func__, pc->retries); |
1da177e4 LT |
246 | |
247 | pc->retries++; | |
1da177e4 | 248 | |
baf08f0b | 249 | return ide_issue_pc(drive, WAIT_FLOPPY_CMD, NULL); |
1da177e4 LT |
250 | } |
251 | ||
0127854d | 252 | void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 253 | { |
7bf7420a | 254 | ide_init_pc(pc); |
30d67099 | 255 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
256 | pc->c[7] = 255; |
257 | pc->c[8] = 255; | |
8e555123 | 258 | pc->req_xfer = 255; |
1da177e4 LT |
259 | } |
260 | ||
0571c7a4 | 261 | /* A mode sense command is used to "sense" floppy parameters. */ |
0127854d | 262 | void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
1da177e4 | 263 | { |
24a5d703 | 264 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 265 | |
7bf7420a | 266 | ide_init_pc(pc); |
30d67099 | 267 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 | 268 | pc->c[1] = 0; |
4de4b9e1 | 269 | pc->c[2] = page_code; |
1da177e4 LT |
270 | |
271 | switch (page_code) { | |
0571c7a4 BP |
272 | case IDEFLOPPY_CAPABILITIES_PAGE: |
273 | length += 12; | |
274 | break; | |
275 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
276 | length += 32; | |
277 | break; | |
278 | default: | |
7b355726 | 279 | printk(KERN_ERR PFX "unsupported page code in %s\n", __func__); |
1da177e4 | 280 | } |
8f622430 | 281 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 282 | pc->req_xfer = length; |
1da177e4 LT |
283 | } |
284 | ||
7b355726 | 285 | static void idefloppy_create_rw_cmd(ide_drive_t *drive, |
8e555123 | 286 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 287 | unsigned long sector) |
1da177e4 | 288 | { |
7b355726 | 289 | idefloppy_floppy_t *floppy = drive->driver_data; |
1da177e4 LT |
290 | int block = sector / floppy->bs_factor; |
291 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
292 | int cmd = rq_data_dir(rq); | |
293 | ||
7b355726 BP |
294 | ide_debug_log(IDE_DBG_FUNC, "%s: block: %d, blocks: %d\n", __func__, |
295 | block, blocks); | |
1da177e4 | 296 | |
7bf7420a | 297 | ide_init_pc(pc); |
ae7e8ddc BP |
298 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
299 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 300 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 301 | |
20cd93be BP |
302 | memcpy(rq->cmd, pc->c, 12); |
303 | ||
1da177e4 | 304 | pc->rq = rq; |
b98b3409 | 305 | pc->b_count = 0; |
4aff5e23 | 306 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 307 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
308 | pc->buf = NULL; |
309 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
5e331095 | 310 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
311 | } |
312 | ||
0571c7a4 | 313 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
8e555123 | 314 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 315 | { |
7bf7420a | 316 | ide_init_pc(pc); |
1da177e4 | 317 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf | 318 | pc->rq = rq; |
b98b3409 | 319 | pc->b_count = 0; |
3d6392cf | 320 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
6e5fa7b8 | 321 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 322 | pc->buf = rq->data; |
3d6392cf | 323 | if (rq->bio) |
5e331095 | 324 | pc->flags |= PC_FLAG_DMA_OK; |
3d6392cf JA |
325 | /* |
326 | * possibly problematic, doesn't look like ide-floppy correctly | |
327 | * handled scattered requests if dma fails... | |
328 | */ | |
8e555123 | 329 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
330 | } |
331 | ||
0571c7a4 BP |
332 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
333 | struct request *rq, sector_t block_s) | |
1da177e4 LT |
334 | { |
335 | idefloppy_floppy_t *floppy = drive->driver_data; | |
b98b3409 | 336 | ide_hwif_t *hwif = drive->hwif; |
8e555123 | 337 | struct ide_atapi_pc *pc; |
1da177e4 LT |
338 | unsigned long block = (unsigned long)block_s; |
339 | ||
7b355726 BP |
340 | ide_debug_log(IDE_DBG_FUNC, "%s: dev: %s, cmd: 0x%x, cmd_type: %x, " |
341 | "errors: %d\n", | |
342 | __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?", | |
343 | rq->cmd[0], rq->cmd_type, rq->errors); | |
b98b3409 | 344 | |
7b355726 BP |
345 | ide_debug_log(IDE_DBG_FUNC, "%s: sector: %ld, nr_sectors: %ld, " |
346 | "current_nr_sectors: %d\n", | |
347 | __func__, (long)rq->sector, rq->nr_sectors, | |
348 | rq->current_nr_sectors); | |
1da177e4 LT |
349 | |
350 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
351 | if (floppy->failed_pc) |
352 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 | 353 | else |
7b355726 BP |
354 | printk(KERN_ERR PFX "%s: I/O error\n", drive->name); |
355 | ||
c2b2b293 | 356 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
357 | return ide_stopped; |
358 | } | |
4aff5e23 | 359 | if (blk_fs_request(rq)) { |
1da177e4 LT |
360 | if (((long)rq->sector % floppy->bs_factor) || |
361 | (rq->nr_sectors % floppy->bs_factor)) { | |
7b355726 BP |
362 | printk(KERN_ERR PFX "%s: unsupported r/w rq size\n", |
363 | drive->name); | |
c2b2b293 | 364 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
365 | return ide_stopped; |
366 | } | |
2e8a6f89 | 367 | pc = &floppy->queued_pc; |
7b355726 | 368 | idefloppy_create_rw_cmd(drive, pc, rq, block); |
4aff5e23 | 369 | } else if (blk_special_request(rq)) { |
8e555123 | 370 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 371 | } else if (blk_pc_request(rq)) { |
2e8a6f89 | 372 | pc = &floppy->queued_pc; |
3d6392cf | 373 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 | 374 | } else { |
7b355726 | 375 | blk_dump_rq_flags(rq, PFX "unsupported command in queue"); |
c2b2b293 | 376 | idefloppy_end_request(drive, 0, 0); |
1da177e4 LT |
377 | return ide_stopped; |
378 | } | |
379 | ||
b98b3409 BP |
380 | ide_init_sg_cmd(drive, rq); |
381 | ide_map_sg(drive, rq); | |
382 | ||
383 | pc->sg = hwif->sg_table; | |
384 | pc->sg_cnt = hwif->sg_nents; | |
385 | ||
1da177e4 | 386 | pc->rq = rq; |
5d41893c | 387 | |
1da177e4 LT |
388 | return idefloppy_issue_pc(drive, pc); |
389 | } | |
390 | ||
1da177e4 | 391 | /* |
8e81bbba BP |
392 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
393 | * parameters and use the LBA parameters instead. | |
1da177e4 | 394 | */ |
8e81bbba | 395 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
396 | { |
397 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2ac07d92 | 398 | struct gendisk *disk = floppy->disk; |
8e555123 | 399 | struct ide_atapi_pc pc; |
8e81bbba | 400 | u8 *page; |
1da177e4 | 401 | int capacity, lba_capacity; |
8e81bbba BP |
402 | u16 transfer_rate, sector_size, cyls, rpm; |
403 | u8 heads, sectors; | |
1da177e4 | 404 | |
0127854d | 405 | ide_floppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
8e81bbba | 406 | |
2ac07d92 | 407 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
7b355726 | 408 | printk(KERN_ERR PFX "Can't get flexible disk page params\n"); |
1da177e4 LT |
409 | return 1; |
410 | } | |
49cac39e BZ |
411 | |
412 | if (pc.buf[3] & 0x80) | |
413 | drive->atapi_flags |= IDE_AFLAG_WP; | |
414 | else | |
415 | drive->atapi_flags &= ~IDE_AFLAG_WP; | |
416 | ||
417 | set_disk_ro(disk, !!(drive->atapi_flags & IDE_AFLAG_WP)); | |
418 | ||
8e555123 | 419 | page = &pc.buf[8]; |
8e81bbba | 420 | |
85ae98a3 HH |
421 | transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]); |
422 | sector_size = be16_to_cpup((__be16 *)&pc.buf[8 + 6]); | |
423 | cyls = be16_to_cpup((__be16 *)&pc.buf[8 + 8]); | |
424 | rpm = be16_to_cpup((__be16 *)&pc.buf[8 + 28]); | |
8e555123 BP |
425 | heads = pc.buf[8 + 4]; |
426 | sectors = pc.buf[8 + 5]; | |
8e81bbba BP |
427 | |
428 | capacity = cyls * heads * sectors * sector_size; | |
429 | ||
430 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
7b355726 | 431 | printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
1da177e4 | 432 | "%d sector size, %d rpm\n", |
8e81bbba BP |
433 | drive->name, capacity / 1024, cyls, heads, |
434 | sectors, transfer_rate / 8, sector_size, rpm); | |
435 | ||
436 | memcpy(&floppy->flexible_disk_page, page, 32); | |
437 | drive->bios_cyl = cyls; | |
438 | drive->bios_head = heads; | |
439 | drive->bios_sect = sectors; | |
1da177e4 | 440 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 441 | |
1da177e4 | 442 | if (capacity < lba_capacity) { |
7b355726 | 443 | printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d " |
1da177e4 LT |
444 | "bytes, but the drive only handles %d\n", |
445 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
446 | floppy->blocks = floppy->block_size ? |
447 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
448 | } |
449 | return 0; | |
450 | } | |
451 | ||
1da177e4 | 452 | /* |
194ec0c0 BP |
453 | * Determine if a media is present in the floppy drive, and if so, its LBA |
454 | * capacity. | |
1da177e4 | 455 | */ |
194ec0c0 | 456 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
457 | { |
458 | idefloppy_floppy_t *floppy = drive->driver_data; | |
2ac07d92 | 459 | struct gendisk *disk = floppy->disk; |
8e555123 | 460 | struct ide_atapi_pc pc; |
194ec0c0 BP |
461 | u8 *cap_desc; |
462 | u8 header_len, desc_cnt; | |
463 | int i, rc = 1, blocks, length; | |
464 | ||
1da177e4 LT |
465 | drive->bios_cyl = 0; |
466 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
467 | floppy->blocks = 0; |
468 | floppy->bs_factor = 1; | |
1da177e4 LT |
469 | set_capacity(floppy->disk, 0); |
470 | ||
0127854d | 471 | ide_floppy_create_read_capacity_cmd(&pc); |
2ac07d92 | 472 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
7b355726 | 473 | printk(KERN_ERR PFX "Can't get floppy parameters\n"); |
1da177e4 LT |
474 | return 1; |
475 | } | |
8e555123 BP |
476 | header_len = pc.buf[3]; |
477 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
478 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
479 | ||
480 | for (i = 0; i < desc_cnt; i++) { | |
481 | unsigned int desc_start = 4 + i*8; | |
482 | ||
85ae98a3 HH |
483 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
484 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 | 485 | |
7b355726 BP |
486 | ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, " |
487 | "%d sector size\n", | |
488 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 489 | |
194ec0c0 BP |
490 | if (i) |
491 | continue; | |
492 | /* | |
493 | * the code below is valid only for the 1st descriptor, ie i=0 | |
494 | */ | |
1da177e4 | 495 | |
8e555123 | 496 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
497 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
498 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 499 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 500 | /* |
1da177e4 LT |
501 | * If it is not a clik drive, break out |
502 | * (maintains previous driver behaviour) | |
503 | */ | |
504 | break; | |
505 | case CAPACITY_CURRENT: | |
506 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 507 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
7b355726 BP |
508 | printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d " |
509 | "sector size\n", | |
510 | drive->name, blocks * length / 1024, | |
511 | blocks, length); | |
194ec0c0 BP |
512 | memcpy(&floppy->cap_desc, cap_desc, 8); |
513 | ||
1da177e4 | 514 | if (!length || length % 512) { |
7b355726 BP |
515 | printk(KERN_NOTICE PFX "%s: %d bytes block size" |
516 | " not supported\n", drive->name, length); | |
1da177e4 | 517 | } else { |
194ec0c0 BP |
518 | floppy->blocks = blocks; |
519 | floppy->block_size = length; | |
520 | floppy->bs_factor = length / 512; | |
521 | if (floppy->bs_factor != 1) | |
7b355726 BP |
522 | printk(KERN_NOTICE PFX "%s: Warning: " |
523 | "non 512 bytes block size not " | |
524 | "fully supported\n", | |
525 | drive->name); | |
194ec0c0 | 526 | rc = 0; |
1da177e4 LT |
527 | } |
528 | break; | |
529 | case CAPACITY_NO_CARTRIDGE: | |
530 | /* | |
531 | * This is a KERN_ERR so it appears on screen | |
532 | * for the user to see | |
533 | */ | |
7b355726 BP |
534 | printk(KERN_ERR PFX "%s: No disk in drive\n", |
535 | drive->name); | |
1da177e4 LT |
536 | break; |
537 | case CAPACITY_INVALID: | |
7b355726 | 538 | printk(KERN_ERR PFX "%s: Invalid capacity for disk " |
1da177e4 LT |
539 | "in drive\n", drive->name); |
540 | break; | |
541 | } | |
7b355726 BP |
542 | ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d\n", |
543 | pc.buf[desc_start + 4] & 0x03); | |
1da177e4 LT |
544 | } |
545 | ||
546 | /* Clik! disk does not support get_flexible_disk_page */ | |
ea68d270 | 547 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
8e81bbba | 548 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 | 549 | |
2ac07d92 BZ |
550 | set_capacity(disk, floppy->blocks * floppy->bs_factor); |
551 | ||
1da177e4 LT |
552 | return rc; |
553 | } | |
554 | ||
b9103da4 | 555 | sector_t ide_floppy_capacity(ide_drive_t *drive) |
1da177e4 LT |
556 | { |
557 | idefloppy_floppy_t *floppy = drive->driver_data; | |
558 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
559 | ||
560 | return capacity; | |
561 | } | |
562 | ||
0571c7a4 | 563 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
1da177e4 | 564 | { |
4dde4492 | 565 | u16 *id = drive->id; |
2e8a6f89 | 566 | |
85e39035 BZ |
567 | drive->pc_callback = ide_floppy_callback; |
568 | drive->pc_update_buffers = idefloppy_update_buffers; | |
569 | drive->pc_io_buffers = ide_io_buffers; | |
3ad6776c | 570 | |
1da177e4 | 571 | /* |
0571c7a4 BP |
572 | * We used to check revisions here. At this point however I'm giving up. |
573 | * Just assume they are all broken, its easier. | |
1da177e4 | 574 | * |
0571c7a4 BP |
575 | * The actual reason for the workarounds was likely a driver bug after |
576 | * all rather than a firmware bug, and the workaround below used to hide | |
577 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
578 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 579 | */ |
4dde4492 | 580 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
ea68d270 | 581 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 | 582 | /* This value will be visible in the /proc/ide/hdx/settings */ |
baf08f0b | 583 | drive->pc_delay = IDEFLOPPY_PC_DELAY; |
1da177e4 LT |
584 | blk_queue_max_sectors(drive->queue, 64); |
585 | } | |
586 | ||
587 | /* | |
0571c7a4 BP |
588 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
589 | * nasty clicking noises without it, so please don't remove this. | |
590 | */ | |
4dde4492 | 591 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
1da177e4 | 592 | blk_queue_max_sectors(drive->queue, 64); |
ea68d270 | 593 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
0578042d BZ |
594 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
595 | drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK; | |
1da177e4 LT |
596 | } |
597 | ||
194ec0c0 | 598 | (void) ide_floppy_get_capacity(drive); |
1e874f44 BZ |
599 | |
600 | ide_proc_register_driver(drive, floppy->driver); | |
1da177e4 LT |
601 | } |
602 | ||
4031bbe4 | 603 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
604 | { |
605 | idefloppy_floppy_t *floppy = drive->driver_data; | |
606 | struct gendisk *g = floppy->disk; | |
607 | ||
7662d046 | 608 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
609 | |
610 | del_gendisk(g); | |
611 | ||
612 | ide_floppy_put(floppy); | |
1da177e4 LT |
613 | } |
614 | ||
9a24b63d | 615 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 | 616 | { |
5aeddf90 | 617 | struct ide_floppy_obj *floppy = to_ide_drv(kref, ide_floppy_obj); |
1da177e4 LT |
618 | ide_drive_t *drive = floppy->drive; |
619 | struct gendisk *g = floppy->disk; | |
620 | ||
621 | drive->driver_data = NULL; | |
622 | g->private_data = NULL; | |
623 | put_disk(g); | |
624 | kfree(floppy); | |
625 | } | |
626 | ||
4031bbe4 | 627 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 628 | |
1da177e4 | 629 | static ide_driver_t idefloppy_driver = { |
8604affd | 630 | .gen_driver = { |
4ef3b8f4 | 631 | .owner = THIS_MODULE, |
8604affd BZ |
632 | .name = "ide-floppy", |
633 | .bus = &ide_bus_type, | |
8604affd | 634 | }, |
4031bbe4 RK |
635 | .probe = ide_floppy_probe, |
636 | .remove = ide_floppy_remove, | |
1da177e4 | 637 | .version = IDEFLOPPY_VERSION, |
1da177e4 | 638 | .do_request = idefloppy_do_request, |
c2b2b293 | 639 | .end_request = idefloppy_end_request, |
1da177e4 | 640 | .error = __ide_error, |
7662d046 | 641 | #ifdef CONFIG_IDE_PROC_FS |
b9103da4 BZ |
642 | .proc = ide_floppy_proc, |
643 | .settings = ide_floppy_settings, | |
7662d046 | 644 | #endif |
1da177e4 LT |
645 | }; |
646 | ||
647 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
648 | { | |
649 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
650 | struct ide_floppy_obj *floppy; | |
651 | ide_drive_t *drive; | |
1da177e4 LT |
652 | int ret = 0; |
653 | ||
0571c7a4 BP |
654 | floppy = ide_floppy_get(disk); |
655 | if (!floppy) | |
1da177e4 LT |
656 | return -ENXIO; |
657 | ||
658 | drive = floppy->drive; | |
659 | ||
7b355726 BP |
660 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
661 | ||
c94964a4 | 662 | floppy->openers++; |
1da177e4 | 663 | |
c94964a4 | 664 | if (floppy->openers == 1) { |
ea68d270 | 665 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
666 | /* Just in case */ |
667 | ||
de699ad5 | 668 | if (ide_do_test_unit_ready(drive, disk)) |
0c8a6c7a | 669 | ide_do_start_stop(drive, disk, 1); |
1da177e4 | 670 | |
194ec0c0 | 671 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
672 | && (filp->f_flags & O_NDELAY) == 0 |
673 | /* | |
0571c7a4 BP |
674 | * Allow O_NDELAY to open a drive without a disk, or with an |
675 | * unreadable disk, so that we can get the format capacity | |
676 | * of the drive or begin the format - Sam | |
677 | */ | |
1da177e4 | 678 | ) { |
1da177e4 LT |
679 | ret = -EIO; |
680 | goto out_put_floppy; | |
681 | } | |
682 | ||
49cac39e | 683 | if ((drive->atapi_flags & IDE_AFLAG_WP) && (filp->f_mode & 2)) { |
1da177e4 LT |
684 | ret = -EROFS; |
685 | goto out_put_floppy; | |
686 | } | |
e996fc8a | 687 | |
ea68d270 | 688 | drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED; |
0578042d | 689 | ide_set_media_lock(drive, disk, 1); |
1da177e4 | 690 | check_disk_change(inode->i_bdev); |
ea68d270 | 691 | } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
692 | ret = -EBUSY; |
693 | goto out_put_floppy; | |
694 | } | |
695 | return 0; | |
696 | ||
697 | out_put_floppy: | |
c94964a4 | 698 | floppy->openers--; |
1da177e4 LT |
699 | ide_floppy_put(floppy); |
700 | return ret; | |
701 | } | |
702 | ||
703 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
704 | { | |
705 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
5aeddf90 | 706 | struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); |
1da177e4 | 707 | ide_drive_t *drive = floppy->drive; |
bcc77d9c | 708 | |
7b355726 | 709 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1da177e4 | 710 | |
c94964a4 | 711 | if (floppy->openers == 1) { |
0578042d | 712 | ide_set_media_lock(drive, disk, 0); |
ea68d270 | 713 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 714 | } |
c94964a4 BZ |
715 | |
716 | floppy->openers--; | |
1da177e4 LT |
717 | |
718 | ide_floppy_put(floppy); | |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
a885c8c4 CH |
723 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
724 | { | |
5aeddf90 BP |
725 | struct ide_floppy_obj *floppy = ide_drv_g(bdev->bd_disk, |
726 | ide_floppy_obj); | |
a885c8c4 CH |
727 | ide_drive_t *drive = floppy->drive; |
728 | ||
729 | geo->heads = drive->bios_head; | |
730 | geo->sectors = drive->bios_sect; | |
731 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
732 | return 0; | |
733 | } | |
734 | ||
1da177e4 LT |
735 | static int idefloppy_media_changed(struct gendisk *disk) |
736 | { | |
5aeddf90 | 737 | struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); |
1da177e4 | 738 | ide_drive_t *drive = floppy->drive; |
6e5fa7b8 | 739 | int ret; |
1da177e4 LT |
740 | |
741 | /* do not scan partitions twice if this is a removable device */ | |
97100fc8 BZ |
742 | if (drive->dev_flags & IDE_DFLAG_ATTACH) { |
743 | drive->dev_flags &= ~IDE_DFLAG_ATTACH; | |
1da177e4 LT |
744 | return 0; |
745 | } | |
ea68d270 BP |
746 | ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED); |
747 | drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED; | |
6e5fa7b8 | 748 | return ret; |
1da177e4 LT |
749 | } |
750 | ||
751 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
752 | { | |
5aeddf90 | 753 | struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); |
b9103da4 | 754 | set_capacity(disk, ide_floppy_capacity(floppy->drive)); |
1da177e4 LT |
755 | return 0; |
756 | } | |
757 | ||
758 | static struct block_device_operations idefloppy_ops = { | |
52d3ccf7 PC |
759 | .owner = THIS_MODULE, |
760 | .open = idefloppy_open, | |
761 | .release = idefloppy_release, | |
5bb1536a | 762 | .ioctl = ide_floppy_ioctl, |
52d3ccf7 PC |
763 | .getgeo = idefloppy_getgeo, |
764 | .media_changed = idefloppy_media_changed, | |
765 | .revalidate_disk = idefloppy_revalidate_disk | |
1da177e4 LT |
766 | }; |
767 | ||
4031bbe4 | 768 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
769 | { |
770 | idefloppy_floppy_t *floppy; | |
771 | struct gendisk *g; | |
772 | ||
773 | if (!strstr("ide-floppy", drive->driver_req)) | |
774 | goto failed; | |
2a924662 | 775 | |
1da177e4 LT |
776 | if (drive->media != ide_floppy) |
777 | goto failed; | |
2a924662 | 778 | |
51509eec | 779 | if (!ide_check_atapi_device(drive, DRV_NAME)) { |
7b355726 BP |
780 | printk(KERN_ERR PFX "%s: not supported by this version of " |
781 | DRV_NAME "\n", drive->name); | |
1da177e4 LT |
782 | goto failed; |
783 | } | |
0571c7a4 BP |
784 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
785 | if (!floppy) { | |
7b355726 BP |
786 | printk(KERN_ERR PFX "%s: Can't allocate a floppy structure\n", |
787 | drive->name); | |
1da177e4 LT |
788 | goto failed; |
789 | } | |
790 | ||
791 | g = alloc_disk(1 << PARTN_BITS); | |
792 | if (!g) | |
793 | goto out_free_floppy; | |
794 | ||
795 | ide_init_disk(g, drive); | |
796 | ||
1da177e4 LT |
797 | kref_init(&floppy->kref); |
798 | ||
799 | floppy->drive = drive; | |
800 | floppy->driver = &idefloppy_driver; | |
801 | floppy->disk = g; | |
802 | ||
803 | g->private_data = &floppy->driver; | |
804 | ||
805 | drive->driver_data = floppy; | |
806 | ||
0964dbe6 BP |
807 | drive->debug_mask = debug_mask; |
808 | ||
0571c7a4 | 809 | idefloppy_setup(drive, floppy); |
97100fc8 | 810 | drive->dev_flags |= IDE_DFLAG_ATTACH; |
8604affd | 811 | |
1da177e4 LT |
812 | g->minors = 1 << PARTN_BITS; |
813 | g->driverfs_dev = &drive->gendev; | |
97100fc8 BZ |
814 | if (drive->dev_flags & IDE_DFLAG_REMOVABLE) |
815 | g->flags = GENHD_FL_REMOVABLE; | |
1da177e4 | 816 | g->fops = &idefloppy_ops; |
1da177e4 LT |
817 | add_disk(g); |
818 | return 0; | |
819 | ||
1da177e4 LT |
820 | out_free_floppy: |
821 | kfree(floppy); | |
822 | failed: | |
8604affd | 823 | return -ENODEV; |
1da177e4 LT |
824 | } |
825 | ||
0571c7a4 | 826 | static void __exit idefloppy_exit(void) |
1da177e4 | 827 | { |
8604affd | 828 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
829 | } |
830 | ||
17514e8a | 831 | static int __init idefloppy_init(void) |
1da177e4 | 832 | { |
7b355726 | 833 | printk(KERN_INFO DRV_NAME " driver " IDEFLOPPY_VERSION "\n"); |
8604affd | 834 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
835 | } |
836 | ||
263756ec | 837 | MODULE_ALIAS("ide:*m-floppy*"); |
0127854d | 838 | MODULE_ALIAS("ide-floppy"); |
1da177e4 LT |
839 | module_init(idefloppy_init); |
840 | module_exit(idefloppy_exit); | |
841 | MODULE_LICENSE("GPL"); | |
0571c7a4 BP |
842 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
843 |