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Commit | Line | Data |
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1da177e4 | 1 | /* |
d3f20848 BP |
2 | * IDE ATAPI floppy driver. |
3 | * | |
59bca8cc BZ |
4 | * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> |
5 | * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> | |
6 | * Copyright (C) 2005 Bartlomiej Zolnierkiewicz | |
0571c7a4 | 7 | * |
1da177e4 LT |
8 | * This driver supports the following IDE floppy drives: |
9 | * | |
10 | * LS-120/240 SuperDisk | |
11 | * Iomega Zip 100/250 | |
12 | * Iomega PC Card Clik!/PocketZip | |
13 | * | |
d3f20848 BP |
14 | * For a historical changelog see |
15 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 | |
1da177e4 LT |
16 | */ |
17 | ||
1da177e4 LT |
18 | #include <linux/types.h> |
19 | #include <linux/string.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/timer.h> | |
23 | #include <linux/mm.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/major.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/genhd.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/cdrom.h> | |
30 | #include <linux/ide.h> | |
3ceca727 | 31 | #include <linux/hdreg.h> |
1da177e4 | 32 | #include <linux/bitops.h> |
cf8b8975 | 33 | #include <linux/mutex.h> |
b98b3409 | 34 | #include <linux/scatterlist.h> |
1da177e4 | 35 | |
89636af2 BZ |
36 | #include <scsi/scsi_ioctl.h> |
37 | ||
1da177e4 | 38 | #include <asm/byteorder.h> |
7e8b163b BP |
39 | #include <linux/irq.h> |
40 | #include <linux/uaccess.h> | |
41 | #include <linux/io.h> | |
1da177e4 LT |
42 | #include <asm/unaligned.h> |
43 | ||
0127854d BZ |
44 | #include "ide-floppy.h" |
45 | ||
1da177e4 | 46 | /* |
0571c7a4 BP |
47 | * After each failed packet command we issue a request sense command and retry |
48 | * the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
1da177e4 LT |
49 | */ |
50 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
51 | ||
194ec0c0 | 52 | /* format capacities descriptor codes */ |
1da177e4 LT |
53 | #define CAPACITY_INVALID 0x00 |
54 | #define CAPACITY_UNFORMATTED 0x01 | |
55 | #define CAPACITY_CURRENT 0x02 | |
56 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
57 | ||
baf08f0b BZ |
58 | /* |
59 | * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit | |
60 | * was apparently being deasserted before the unit was ready to receive data. | |
61 | */ | |
62 | #define IDEFLOPPY_PC_DELAY (HZ/20) /* default delay for ZIP 100 (50ms) */ | |
1da177e4 | 63 | |
0571c7a4 | 64 | /* Error code returned in rq->errors to the higher part of the driver. */ |
1da177e4 LT |
65 | #define IDEFLOPPY_ERROR_GENERAL 101 |
66 | ||
1da177e4 | 67 | /* |
0571c7a4 BP |
68 | * Used to finish servicing a request. For read/write requests, we will call |
69 | * ide_end_request to pass to the next buffer. | |
1da177e4 | 70 | */ |
806f80a6 | 71 | static int ide_floppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
1da177e4 | 72 | { |
0df96277 | 73 | struct ide_disk_obj *floppy = drive->driver_data; |
1da177e4 LT |
74 | struct request *rq = HWGROUP(drive)->rq; |
75 | int error; | |
76 | ||
7b355726 | 77 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1da177e4 LT |
78 | |
79 | switch (uptodate) { | |
7b355726 BP |
80 | case 0: |
81 | error = IDEFLOPPY_ERROR_GENERAL; | |
82 | break; | |
83 | ||
84 | case 1: | |
85 | error = 0; | |
86 | break; | |
87 | ||
88 | default: | |
89 | error = uptodate; | |
1da177e4 | 90 | } |
7b355726 | 91 | |
1da177e4 LT |
92 | if (error) |
93 | floppy->failed_pc = NULL; | |
94 | /* Why does this happen? */ | |
95 | if (!rq) | |
96 | return 0; | |
4aff5e23 | 97 | if (!blk_special_request(rq)) { |
1da177e4 LT |
98 | /* our real local end request function */ |
99 | ide_end_request(drive, uptodate, nsecs); | |
100 | return 0; | |
101 | } | |
102 | rq->errors = error; | |
103 | /* fixme: need to move this local also */ | |
104 | ide_end_drive_cmd(drive, 0, 0); | |
105 | return 0; | |
106 | } | |
107 | ||
8e555123 BP |
108 | static void idefloppy_update_buffers(ide_drive_t *drive, |
109 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
110 | { |
111 | struct request *rq = pc->rq; | |
112 | struct bio *bio = rq->bio; | |
113 | ||
114 | while ((bio = rq->bio) != NULL) | |
c84d9bbe | 115 | ide_floppy_end_request(drive, 1, 0); |
1da177e4 LT |
116 | } |
117 | ||
b14c7212 | 118 | static void ide_floppy_callback(ide_drive_t *drive, int dsc) |
1da177e4 | 119 | { |
0df96277 | 120 | struct ide_disk_obj *floppy = drive->driver_data; |
2b9efba4 | 121 | struct ide_atapi_pc *pc = drive->pc; |
81f49382 | 122 | int uptodate = pc->error ? 0 : 1; |
1da177e4 | 123 | |
7b355726 | 124 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
bcc77d9c | 125 | |
dd2e9a03 BZ |
126 | if (floppy->failed_pc == pc) |
127 | floppy->failed_pc = NULL; | |
128 | ||
81f49382 BP |
129 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
130 | (pc->rq && blk_pc_request(pc->rq))) | |
131 | uptodate = 1; /* FIXME */ | |
132 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
2b9efba4 | 133 | u8 *buf = pc->buf; |
a6ff2d3b | 134 | |
81f49382 BP |
135 | if (!pc->error) { |
136 | floppy->sense_key = buf[2] & 0x0F; | |
137 | floppy->asc = buf[12]; | |
138 | floppy->ascq = buf[13]; | |
139 | floppy->progress_indication = buf[15] & 0x80 ? | |
140 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 141 | |
81f49382 | 142 | if (floppy->failed_pc) |
7b355726 BP |
143 | ide_debug_log(IDE_DBG_PC, "pc = %x, ", |
144 | floppy->failed_pc->c[0]); | |
bcc77d9c | 145 | |
7b355726 BP |
146 | ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x," |
147 | "ascq = %x\n", floppy->sense_key, | |
148 | floppy->asc, floppy->ascq); | |
81f49382 | 149 | } else |
7b355726 BP |
150 | printk(KERN_ERR PFX "Error in REQUEST SENSE itself - " |
151 | "Aborting request!\n"); | |
81f49382 | 152 | } |
1da177e4 | 153 | |
c84d9bbe | 154 | ide_floppy_end_request(drive, uptodate, 0); |
1da177e4 LT |
155 | } |
156 | ||
0df96277 | 157 | static void ide_floppy_report_error(struct ide_disk_obj *floppy, |
8e555123 | 158 | struct ide_atapi_pc *pc) |
1da177e4 | 159 | { |
d652c138 | 160 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
161 | if (floppy->sense_key == 0x02 && |
162 | floppy->asc == 0x3a && | |
163 | floppy->ascq == 0x00) | |
d652c138 BP |
164 | return; |
165 | ||
7b355726 | 166 | printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, " |
d652c138 BP |
167 | "asc = %2x, ascq = %2x\n", |
168 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
169 | floppy->asc, floppy->ascq); | |
170 | ||
1da177e4 LT |
171 | } |
172 | ||
0571c7a4 | 173 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 174 | struct ide_atapi_pc *pc) |
1da177e4 | 175 | { |
0df96277 | 176 | struct ide_disk_obj *floppy = drive->driver_data; |
1da177e4 | 177 | |
1da177e4 | 178 | if (floppy->failed_pc == NULL && |
30d67099 | 179 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 | 180 | floppy->failed_pc = pc; |
2b9efba4 | 181 | |
1da177e4 | 182 | /* Set the current packet command */ |
2b9efba4 | 183 | drive->pc = pc; |
1da177e4 | 184 | |
757ced89 | 185 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 186 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
187 | ide_floppy_report_error(floppy, pc); |
188 | /* Giving up */ | |
189 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
190 | ||
1da177e4 | 191 | floppy->failed_pc = NULL; |
b14c7212 | 192 | drive->pc_callback(drive, 0); |
1da177e4 LT |
193 | return ide_stopped; |
194 | } | |
195 | ||
7b355726 | 196 | ide_debug_log(IDE_DBG_FUNC, "%s: Retry #%d\n", __func__, pc->retries); |
1da177e4 LT |
197 | |
198 | pc->retries++; | |
1da177e4 | 199 | |
28ad91db | 200 | return ide_issue_pc(drive); |
1da177e4 LT |
201 | } |
202 | ||
0127854d | 203 | void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 204 | { |
7bf7420a | 205 | ide_init_pc(pc); |
30d67099 | 206 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
207 | pc->c[7] = 255; |
208 | pc->c[8] = 255; | |
8e555123 | 209 | pc->req_xfer = 255; |
1da177e4 LT |
210 | } |
211 | ||
0571c7a4 | 212 | /* A mode sense command is used to "sense" floppy parameters. */ |
0127854d | 213 | void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
1da177e4 | 214 | { |
24a5d703 | 215 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 216 | |
7bf7420a | 217 | ide_init_pc(pc); |
30d67099 | 218 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 | 219 | pc->c[1] = 0; |
4de4b9e1 | 220 | pc->c[2] = page_code; |
1da177e4 LT |
221 | |
222 | switch (page_code) { | |
0571c7a4 BP |
223 | case IDEFLOPPY_CAPABILITIES_PAGE: |
224 | length += 12; | |
225 | break; | |
226 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
227 | length += 32; | |
228 | break; | |
229 | default: | |
7b355726 | 230 | printk(KERN_ERR PFX "unsupported page code in %s\n", __func__); |
1da177e4 | 231 | } |
8f622430 | 232 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 233 | pc->req_xfer = length; |
1da177e4 LT |
234 | } |
235 | ||
7b355726 | 236 | static void idefloppy_create_rw_cmd(ide_drive_t *drive, |
8e555123 | 237 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 238 | unsigned long sector) |
1da177e4 | 239 | { |
0df96277 | 240 | struct ide_disk_obj *floppy = drive->driver_data; |
1da177e4 LT |
241 | int block = sector / floppy->bs_factor; |
242 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
243 | int cmd = rq_data_dir(rq); | |
244 | ||
7b355726 BP |
245 | ide_debug_log(IDE_DBG_FUNC, "%s: block: %d, blocks: %d\n", __func__, |
246 | block, blocks); | |
1da177e4 | 247 | |
7bf7420a | 248 | ide_init_pc(pc); |
ae7e8ddc BP |
249 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
250 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 251 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 252 | |
20cd93be BP |
253 | memcpy(rq->cmd, pc->c, 12); |
254 | ||
1da177e4 | 255 | pc->rq = rq; |
b98b3409 | 256 | pc->b_count = 0; |
4aff5e23 | 257 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 258 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
259 | pc->buf = NULL; |
260 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
5e331095 | 261 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
262 | } |
263 | ||
0df96277 | 264 | static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy, |
8e555123 | 265 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 266 | { |
7bf7420a | 267 | ide_init_pc(pc); |
1da177e4 | 268 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf | 269 | pc->rq = rq; |
b98b3409 | 270 | pc->b_count = 0; |
3d6392cf | 271 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
6e5fa7b8 | 272 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 273 | pc->buf = rq->data; |
3d6392cf | 274 | if (rq->bio) |
5e331095 | 275 | pc->flags |= PC_FLAG_DMA_OK; |
3d6392cf JA |
276 | /* |
277 | * possibly problematic, doesn't look like ide-floppy correctly | |
278 | * handled scattered requests if dma fails... | |
279 | */ | |
8e555123 | 280 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
281 | } |
282 | ||
806f80a6 BZ |
283 | static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, |
284 | struct request *rq, sector_t block) | |
1da177e4 | 285 | { |
0df96277 | 286 | struct ide_disk_obj *floppy = drive->driver_data; |
b98b3409 | 287 | ide_hwif_t *hwif = drive->hwif; |
8e555123 | 288 | struct ide_atapi_pc *pc; |
1da177e4 | 289 | |
7b355726 BP |
290 | ide_debug_log(IDE_DBG_FUNC, "%s: dev: %s, cmd: 0x%x, cmd_type: %x, " |
291 | "errors: %d\n", | |
292 | __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?", | |
293 | rq->cmd[0], rq->cmd_type, rq->errors); | |
b98b3409 | 294 | |
7b355726 BP |
295 | ide_debug_log(IDE_DBG_FUNC, "%s: sector: %ld, nr_sectors: %ld, " |
296 | "current_nr_sectors: %d\n", | |
297 | __func__, (long)rq->sector, rq->nr_sectors, | |
298 | rq->current_nr_sectors); | |
1da177e4 LT |
299 | |
300 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
301 | if (floppy->failed_pc) |
302 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 | 303 | else |
7b355726 BP |
304 | printk(KERN_ERR PFX "%s: I/O error\n", drive->name); |
305 | ||
c84d9bbe | 306 | ide_floppy_end_request(drive, 0, 0); |
1da177e4 LT |
307 | return ide_stopped; |
308 | } | |
4aff5e23 | 309 | if (blk_fs_request(rq)) { |
1da177e4 LT |
310 | if (((long)rq->sector % floppy->bs_factor) || |
311 | (rq->nr_sectors % floppy->bs_factor)) { | |
7b355726 BP |
312 | printk(KERN_ERR PFX "%s: unsupported r/w rq size\n", |
313 | drive->name); | |
c84d9bbe | 314 | ide_floppy_end_request(drive, 0, 0); |
1da177e4 LT |
315 | return ide_stopped; |
316 | } | |
2e8a6f89 | 317 | pc = &floppy->queued_pc; |
806f80a6 | 318 | idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block); |
4aff5e23 | 319 | } else if (blk_special_request(rq)) { |
8e555123 | 320 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 321 | } else if (blk_pc_request(rq)) { |
2e8a6f89 | 322 | pc = &floppy->queued_pc; |
3d6392cf | 323 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 | 324 | } else { |
7b355726 | 325 | blk_dump_rq_flags(rq, PFX "unsupported command in queue"); |
c84d9bbe | 326 | ide_floppy_end_request(drive, 0, 0); |
1da177e4 LT |
327 | return ide_stopped; |
328 | } | |
329 | ||
b98b3409 BP |
330 | ide_init_sg_cmd(drive, rq); |
331 | ide_map_sg(drive, rq); | |
332 | ||
333 | pc->sg = hwif->sg_table; | |
334 | pc->sg_cnt = hwif->sg_nents; | |
335 | ||
1da177e4 | 336 | pc->rq = rq; |
5d41893c | 337 | |
1da177e4 LT |
338 | return idefloppy_issue_pc(drive, pc); |
339 | } | |
340 | ||
1da177e4 | 341 | /* |
8e81bbba BP |
342 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
343 | * parameters and use the LBA parameters instead. | |
1da177e4 | 344 | */ |
07bd3f47 LT |
345 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive, |
346 | struct ide_atapi_pc *pc) | |
1da177e4 | 347 | { |
0df96277 | 348 | struct ide_disk_obj *floppy = drive->driver_data; |
2ac07d92 | 349 | struct gendisk *disk = floppy->disk; |
8e81bbba | 350 | u8 *page; |
1da177e4 | 351 | int capacity, lba_capacity; |
8e81bbba BP |
352 | u16 transfer_rate, sector_size, cyls, rpm; |
353 | u8 heads, sectors; | |
1da177e4 | 354 | |
07bd3f47 | 355 | ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
8e81bbba | 356 | |
07bd3f47 | 357 | if (ide_queue_pc_tail(drive, disk, pc)) { |
7b355726 | 358 | printk(KERN_ERR PFX "Can't get flexible disk page params\n"); |
1da177e4 LT |
359 | return 1; |
360 | } | |
49cac39e | 361 | |
07bd3f47 | 362 | if (pc->buf[3] & 0x80) |
da167876 | 363 | drive->dev_flags |= IDE_DFLAG_WP; |
49cac39e | 364 | else |
da167876 | 365 | drive->dev_flags &= ~IDE_DFLAG_WP; |
49cac39e | 366 | |
da167876 | 367 | set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP)); |
49cac39e | 368 | |
07bd3f47 | 369 | page = &pc->buf[8]; |
8e81bbba | 370 | |
07bd3f47 LT |
371 | transfer_rate = be16_to_cpup((__be16 *)&pc->buf[8 + 2]); |
372 | sector_size = be16_to_cpup((__be16 *)&pc->buf[8 + 6]); | |
373 | cyls = be16_to_cpup((__be16 *)&pc->buf[8 + 8]); | |
374 | rpm = be16_to_cpup((__be16 *)&pc->buf[8 + 28]); | |
375 | heads = pc->buf[8 + 4]; | |
376 | sectors = pc->buf[8 + 5]; | |
8e81bbba BP |
377 | |
378 | capacity = cyls * heads * sectors * sector_size; | |
379 | ||
380 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
7b355726 | 381 | printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
1da177e4 | 382 | "%d sector size, %d rpm\n", |
8e81bbba BP |
383 | drive->name, capacity / 1024, cyls, heads, |
384 | sectors, transfer_rate / 8, sector_size, rpm); | |
385 | ||
386 | memcpy(&floppy->flexible_disk_page, page, 32); | |
387 | drive->bios_cyl = cyls; | |
388 | drive->bios_head = heads; | |
389 | drive->bios_sect = sectors; | |
1da177e4 | 390 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 391 | |
1da177e4 | 392 | if (capacity < lba_capacity) { |
7b355726 | 393 | printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d " |
1da177e4 LT |
394 | "bytes, but the drive only handles %d\n", |
395 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
396 | floppy->blocks = floppy->block_size ? |
397 | capacity / floppy->block_size : 0; | |
6f84083b | 398 | drive->capacity64 = floppy->blocks * floppy->bs_factor; |
1da177e4 | 399 | } |
6f84083b | 400 | |
1da177e4 LT |
401 | return 0; |
402 | } | |
403 | ||
1da177e4 | 404 | /* |
194ec0c0 BP |
405 | * Determine if a media is present in the floppy drive, and if so, its LBA |
406 | * capacity. | |
1da177e4 | 407 | */ |
806f80a6 | 408 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 | 409 | { |
0df96277 | 410 | struct ide_disk_obj *floppy = drive->driver_data; |
2ac07d92 | 411 | struct gendisk *disk = floppy->disk; |
8e555123 | 412 | struct ide_atapi_pc pc; |
194ec0c0 BP |
413 | u8 *cap_desc; |
414 | u8 header_len, desc_cnt; | |
415 | int i, rc = 1, blocks, length; | |
416 | ||
1da177e4 LT |
417 | drive->bios_cyl = 0; |
418 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
419 | floppy->blocks = 0; |
420 | floppy->bs_factor = 1; | |
6f84083b | 421 | drive->capacity64 = 0; |
1da177e4 | 422 | |
0127854d | 423 | ide_floppy_create_read_capacity_cmd(&pc); |
2ac07d92 | 424 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
7b355726 | 425 | printk(KERN_ERR PFX "Can't get floppy parameters\n"); |
1da177e4 LT |
426 | return 1; |
427 | } | |
8e555123 BP |
428 | header_len = pc.buf[3]; |
429 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
430 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
431 | ||
432 | for (i = 0; i < desc_cnt; i++) { | |
433 | unsigned int desc_start = 4 + i*8; | |
434 | ||
85ae98a3 HH |
435 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
436 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 | 437 | |
7b355726 BP |
438 | ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, " |
439 | "%d sector size\n", | |
440 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 441 | |
194ec0c0 BP |
442 | if (i) |
443 | continue; | |
444 | /* | |
445 | * the code below is valid only for the 1st descriptor, ie i=0 | |
446 | */ | |
1da177e4 | 447 | |
8e555123 | 448 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
449 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
450 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 451 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 452 | /* |
1da177e4 LT |
453 | * If it is not a clik drive, break out |
454 | * (maintains previous driver behaviour) | |
455 | */ | |
456 | break; | |
457 | case CAPACITY_CURRENT: | |
458 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 459 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
7b355726 BP |
460 | printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d " |
461 | "sector size\n", | |
462 | drive->name, blocks * length / 1024, | |
463 | blocks, length); | |
194ec0c0 BP |
464 | memcpy(&floppy->cap_desc, cap_desc, 8); |
465 | ||
1da177e4 | 466 | if (!length || length % 512) { |
7b355726 BP |
467 | printk(KERN_NOTICE PFX "%s: %d bytes block size" |
468 | " not supported\n", drive->name, length); | |
1da177e4 | 469 | } else { |
194ec0c0 BP |
470 | floppy->blocks = blocks; |
471 | floppy->block_size = length; | |
472 | floppy->bs_factor = length / 512; | |
473 | if (floppy->bs_factor != 1) | |
7b355726 BP |
474 | printk(KERN_NOTICE PFX "%s: Warning: " |
475 | "non 512 bytes block size not " | |
476 | "fully supported\n", | |
477 | drive->name); | |
6f84083b BZ |
478 | drive->capacity64 = |
479 | floppy->blocks * floppy->bs_factor; | |
194ec0c0 | 480 | rc = 0; |
1da177e4 LT |
481 | } |
482 | break; | |
483 | case CAPACITY_NO_CARTRIDGE: | |
484 | /* | |
485 | * This is a KERN_ERR so it appears on screen | |
486 | * for the user to see | |
487 | */ | |
7b355726 BP |
488 | printk(KERN_ERR PFX "%s: No disk in drive\n", |
489 | drive->name); | |
1da177e4 LT |
490 | break; |
491 | case CAPACITY_INVALID: | |
7b355726 | 492 | printk(KERN_ERR PFX "%s: Invalid capacity for disk " |
1da177e4 LT |
493 | "in drive\n", drive->name); |
494 | break; | |
495 | } | |
7b355726 BP |
496 | ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d\n", |
497 | pc.buf[desc_start + 4] & 0x03); | |
1da177e4 LT |
498 | } |
499 | ||
500 | /* Clik! disk does not support get_flexible_disk_page */ | |
ea68d270 | 501 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
07bd3f47 | 502 | (void) ide_floppy_get_flexible_disk_page(drive, &pc); |
1da177e4 | 503 | |
1da177e4 LT |
504 | return rc; |
505 | } | |
506 | ||
806f80a6 | 507 | static void ide_floppy_setup(ide_drive_t *drive) |
1da177e4 | 508 | { |
806f80a6 | 509 | struct ide_disk_obj *floppy = drive->driver_data; |
4dde4492 | 510 | u16 *id = drive->id; |
2e8a6f89 | 511 | |
85e39035 BZ |
512 | drive->pc_callback = ide_floppy_callback; |
513 | drive->pc_update_buffers = idefloppy_update_buffers; | |
514 | drive->pc_io_buffers = ide_io_buffers; | |
3ad6776c | 515 | |
1da177e4 | 516 | /* |
0571c7a4 BP |
517 | * We used to check revisions here. At this point however I'm giving up. |
518 | * Just assume they are all broken, its easier. | |
1da177e4 | 519 | * |
0571c7a4 BP |
520 | * The actual reason for the workarounds was likely a driver bug after |
521 | * all rather than a firmware bug, and the workaround below used to hide | |
522 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
523 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 524 | */ |
4dde4492 | 525 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
ea68d270 | 526 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 | 527 | /* This value will be visible in the /proc/ide/hdx/settings */ |
baf08f0b | 528 | drive->pc_delay = IDEFLOPPY_PC_DELAY; |
1da177e4 LT |
529 | blk_queue_max_sectors(drive->queue, 64); |
530 | } | |
531 | ||
532 | /* | |
0571c7a4 BP |
533 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
534 | * nasty clicking noises without it, so please don't remove this. | |
535 | */ | |
4dde4492 | 536 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
1da177e4 | 537 | blk_queue_max_sectors(drive->queue, 64); |
ea68d270 | 538 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
0578042d | 539 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
42619d35 | 540 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
1da177e4 LT |
541 | } |
542 | ||
194ec0c0 | 543 | (void) ide_floppy_get_capacity(drive); |
1e874f44 BZ |
544 | |
545 | ide_proc_register_driver(drive, floppy->driver); | |
ae9f9f07 BZ |
546 | |
547 | drive->dev_flags |= IDE_DFLAG_ATTACH; | |
1da177e4 | 548 | } |
806f80a6 BZ |
549 | |
550 | static void ide_floppy_flush(ide_drive_t *drive) | |
551 | { | |
552 | } | |
553 | ||
554 | static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk) | |
555 | { | |
556 | int ret = 0; | |
557 | ||
558 | if (ide_do_test_unit_ready(drive, disk)) | |
559 | ide_do_start_stop(drive, disk, 1); | |
560 | ||
561 | ret = ide_floppy_get_capacity(drive); | |
562 | ||
563 | set_capacity(disk, ide_gd_capacity(drive)); | |
564 | ||
565 | return ret; | |
566 | } | |
567 | ||
568 | const struct ide_disk_ops ide_atapi_disk_ops = { | |
569 | .check = ide_check_atapi_device, | |
570 | .get_capacity = ide_floppy_get_capacity, | |
571 | .setup = ide_floppy_setup, | |
572 | .flush = ide_floppy_flush, | |
573 | .init_media = ide_floppy_init_media, | |
574 | .set_doorlock = ide_set_media_lock, | |
575 | .do_request = ide_floppy_do_request, | |
576 | .end_request = ide_floppy_end_request, | |
577 | .ioctl = ide_floppy_ioctl, | |
578 | }; |