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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 | |
1da177e4 | 64 | /* |
0571c7a4 BP |
65 | * Used to finish servicing a request. For read/write requests, we will call |
66 | * ide_end_request to pass to the next buffer. | |
1da177e4 | 67 | */ |
806f80a6 | 68 | static int ide_floppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
1da177e4 | 69 | { |
b65fac32 | 70 | struct request *rq = drive->hwif->rq; |
1da177e4 LT |
71 | int error; |
72 | ||
088b1b88 | 73 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
1da177e4 LT |
74 | |
75 | switch (uptodate) { | |
7b355726 | 76 | case 0: |
c152cc1a | 77 | error = IDE_DRV_ERROR_GENERAL; |
7b355726 BP |
78 | break; |
79 | ||
80 | case 1: | |
81 | error = 0; | |
82 | break; | |
83 | ||
84 | default: | |
85 | error = uptodate; | |
1da177e4 | 86 | } |
7b355726 | 87 | |
1da177e4 | 88 | if (error) |
5e2040fd | 89 | drive->failed_pc = NULL; |
cc495557 | 90 | |
4aff5e23 | 91 | if (!blk_special_request(rq)) { |
1da177e4 LT |
92 | /* our real local end request function */ |
93 | ide_end_request(drive, uptodate, nsecs); | |
94 | return 0; | |
95 | } | |
96 | rq->errors = error; | |
97 | /* fixme: need to move this local also */ | |
a09485df | 98 | ide_complete_rq(drive, 0); |
1da177e4 LT |
99 | return 0; |
100 | } | |
101 | ||
8e555123 BP |
102 | static void idefloppy_update_buffers(ide_drive_t *drive, |
103 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
104 | { |
105 | struct request *rq = pc->rq; | |
106 | struct bio *bio = rq->bio; | |
107 | ||
108 | while ((bio = rq->bio) != NULL) | |
c84d9bbe | 109 | ide_floppy_end_request(drive, 1, 0); |
1da177e4 LT |
110 | } |
111 | ||
b14c7212 | 112 | static void ide_floppy_callback(ide_drive_t *drive, int dsc) |
1da177e4 | 113 | { |
0df96277 | 114 | struct ide_disk_obj *floppy = drive->driver_data; |
2b9efba4 | 115 | struct ide_atapi_pc *pc = drive->pc; |
81f49382 | 116 | int uptodate = pc->error ? 0 : 1; |
1da177e4 | 117 | |
088b1b88 | 118 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
bcc77d9c | 119 | |
5e2040fd BZ |
120 | if (drive->failed_pc == pc) |
121 | drive->failed_pc = NULL; | |
dd2e9a03 | 122 | |
81f49382 BP |
123 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
124 | (pc->rq && blk_pc_request(pc->rq))) | |
125 | uptodate = 1; /* FIXME */ | |
126 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
2b9efba4 | 127 | u8 *buf = pc->buf; |
a6ff2d3b | 128 | |
81f49382 BP |
129 | if (!pc->error) { |
130 | floppy->sense_key = buf[2] & 0x0F; | |
131 | floppy->asc = buf[12]; | |
132 | floppy->ascq = buf[13]; | |
133 | floppy->progress_indication = buf[15] & 0x80 ? | |
134 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 135 | |
5e2040fd | 136 | if (drive->failed_pc) |
088b1b88 | 137 | ide_debug_log(IDE_DBG_PC, "pc = %x", |
5e2040fd | 138 | drive->failed_pc->c[0]); |
bcc77d9c | 139 | |
7b355726 | 140 | ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x," |
088b1b88 | 141 | "ascq = %x", floppy->sense_key, |
7b355726 | 142 | floppy->asc, floppy->ascq); |
81f49382 | 143 | } else |
7b355726 BP |
144 | printk(KERN_ERR PFX "Error in REQUEST SENSE itself - " |
145 | "Aborting request!\n"); | |
81f49382 | 146 | } |
1da177e4 | 147 | |
c84d9bbe | 148 | ide_floppy_end_request(drive, uptodate, 0); |
1da177e4 LT |
149 | } |
150 | ||
0df96277 | 151 | static void ide_floppy_report_error(struct ide_disk_obj *floppy, |
8e555123 | 152 | struct ide_atapi_pc *pc) |
1da177e4 | 153 | { |
d652c138 | 154 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
155 | if (floppy->sense_key == 0x02 && |
156 | floppy->asc == 0x3a && | |
157 | floppy->ascq == 0x00) | |
d652c138 BP |
158 | return; |
159 | ||
7b355726 | 160 | printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, " |
d652c138 BP |
161 | "asc = %2x, ascq = %2x\n", |
162 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
163 | floppy->asc, floppy->ascq); | |
164 | ||
1da177e4 LT |
165 | } |
166 | ||
0571c7a4 | 167 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
8e555123 | 168 | struct ide_atapi_pc *pc) |
1da177e4 | 169 | { |
0df96277 | 170 | struct ide_disk_obj *floppy = drive->driver_data; |
1da177e4 | 171 | |
5e2040fd | 172 | if (drive->failed_pc == NULL && |
30d67099 | 173 | pc->c[0] != GPCMD_REQUEST_SENSE) |
5e2040fd | 174 | drive->failed_pc = pc; |
2b9efba4 | 175 | |
1da177e4 | 176 | /* Set the current packet command */ |
2b9efba4 | 177 | drive->pc = pc; |
1da177e4 | 178 | |
757ced89 | 179 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 180 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
181 | ide_floppy_report_error(floppy, pc); |
182 | /* Giving up */ | |
c152cc1a | 183 | pc->error = IDE_DRV_ERROR_GENERAL; |
757ced89 | 184 | |
5e2040fd | 185 | drive->failed_pc = NULL; |
b14c7212 | 186 | drive->pc_callback(drive, 0); |
1da177e4 LT |
187 | return ide_stopped; |
188 | } | |
189 | ||
088b1b88 | 190 | ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries); |
1da177e4 LT |
191 | |
192 | pc->retries++; | |
1da177e4 | 193 | |
28ad91db | 194 | return ide_issue_pc(drive); |
1da177e4 LT |
195 | } |
196 | ||
0127854d | 197 | void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 198 | { |
7bf7420a | 199 | ide_init_pc(pc); |
30d67099 | 200 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
201 | pc->c[7] = 255; |
202 | pc->c[8] = 255; | |
8e555123 | 203 | pc->req_xfer = 255; |
1da177e4 LT |
204 | } |
205 | ||
0571c7a4 | 206 | /* A mode sense command is used to "sense" floppy parameters. */ |
0127854d | 207 | void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
1da177e4 | 208 | { |
24a5d703 | 209 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 210 | |
7bf7420a | 211 | ide_init_pc(pc); |
30d67099 | 212 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 | 213 | pc->c[1] = 0; |
4de4b9e1 | 214 | pc->c[2] = page_code; |
1da177e4 LT |
215 | |
216 | switch (page_code) { | |
0571c7a4 BP |
217 | case IDEFLOPPY_CAPABILITIES_PAGE: |
218 | length += 12; | |
219 | break; | |
220 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
221 | length += 32; | |
222 | break; | |
223 | default: | |
7b355726 | 224 | printk(KERN_ERR PFX "unsupported page code in %s\n", __func__); |
1da177e4 | 225 | } |
8f622430 | 226 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 227 | pc->req_xfer = length; |
1da177e4 LT |
228 | } |
229 | ||
7b355726 | 230 | static void idefloppy_create_rw_cmd(ide_drive_t *drive, |
8e555123 | 231 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 232 | unsigned long sector) |
1da177e4 | 233 | { |
0df96277 | 234 | struct ide_disk_obj *floppy = drive->driver_data; |
1da177e4 LT |
235 | int block = sector / floppy->bs_factor; |
236 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
237 | int cmd = rq_data_dir(rq); | |
238 | ||
088b1b88 | 239 | ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks); |
1da177e4 | 240 | |
7bf7420a | 241 | ide_init_pc(pc); |
ae7e8ddc BP |
242 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
243 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 244 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 245 | |
20cd93be BP |
246 | memcpy(rq->cmd, pc->c, 12); |
247 | ||
1da177e4 | 248 | pc->rq = rq; |
b98b3409 | 249 | pc->b_count = 0; |
4aff5e23 | 250 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 251 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
252 | pc->buf = NULL; |
253 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
5e331095 | 254 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
255 | } |
256 | ||
0df96277 | 257 | static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy, |
8e555123 | 258 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 259 | { |
7bf7420a | 260 | ide_init_pc(pc); |
1da177e4 | 261 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf | 262 | pc->rq = rq; |
b98b3409 | 263 | pc->b_count = 0; |
3d6392cf | 264 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
6e5fa7b8 | 265 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 266 | pc->buf = rq->data; |
3d6392cf | 267 | if (rq->bio) |
5e331095 | 268 | pc->flags |= PC_FLAG_DMA_OK; |
3d6392cf JA |
269 | /* |
270 | * possibly problematic, doesn't look like ide-floppy correctly | |
271 | * handled scattered requests if dma fails... | |
272 | */ | |
8e555123 | 273 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
274 | } |
275 | ||
806f80a6 BZ |
276 | static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, |
277 | struct request *rq, sector_t block) | |
1da177e4 | 278 | { |
0df96277 | 279 | struct ide_disk_obj *floppy = drive->driver_data; |
b98b3409 | 280 | ide_hwif_t *hwif = drive->hwif; |
8e555123 | 281 | struct ide_atapi_pc *pc; |
1da177e4 | 282 | |
088b1b88 BP |
283 | if (drive->debug_mask & IDE_DBG_RQ) |
284 | blk_dump_rq_flags(rq, (rq->rq_disk | |
285 | ? rq->rq_disk->disk_name | |
286 | : "dev?")); | |
1da177e4 LT |
287 | |
288 | if (rq->errors >= ERROR_MAX) { | |
5e2040fd BZ |
289 | if (drive->failed_pc) |
290 | ide_floppy_report_error(floppy, drive->failed_pc); | |
1da177e4 | 291 | else |
7b355726 BP |
292 | printk(KERN_ERR PFX "%s: I/O error\n", drive->name); |
293 | ||
c84d9bbe | 294 | ide_floppy_end_request(drive, 0, 0); |
1da177e4 LT |
295 | return ide_stopped; |
296 | } | |
4aff5e23 | 297 | if (blk_fs_request(rq)) { |
1da177e4 LT |
298 | if (((long)rq->sector % floppy->bs_factor) || |
299 | (rq->nr_sectors % floppy->bs_factor)) { | |
7b355726 BP |
300 | printk(KERN_ERR PFX "%s: unsupported r/w rq size\n", |
301 | drive->name); | |
c84d9bbe | 302 | ide_floppy_end_request(drive, 0, 0); |
1da177e4 LT |
303 | return ide_stopped; |
304 | } | |
2e8a6f89 | 305 | pc = &floppy->queued_pc; |
806f80a6 | 306 | idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block); |
4aff5e23 | 307 | } else if (blk_special_request(rq)) { |
8e555123 | 308 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 309 | } else if (blk_pc_request(rq)) { |
2e8a6f89 | 310 | pc = &floppy->queued_pc; |
3d6392cf | 311 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 | 312 | } else { |
7b355726 | 313 | blk_dump_rq_flags(rq, PFX "unsupported command in queue"); |
c84d9bbe | 314 | ide_floppy_end_request(drive, 0, 0); |
1da177e4 LT |
315 | return ide_stopped; |
316 | } | |
317 | ||
3eb76c1c BP |
318 | if (blk_fs_request(rq) || pc->req_xfer) { |
319 | ide_init_sg_cmd(drive, rq); | |
320 | ide_map_sg(drive, rq); | |
321 | } | |
b98b3409 BP |
322 | |
323 | pc->sg = hwif->sg_table; | |
324 | pc->sg_cnt = hwif->sg_nents; | |
325 | ||
1da177e4 | 326 | pc->rq = rq; |
5d41893c | 327 | |
1da177e4 LT |
328 | return idefloppy_issue_pc(drive, pc); |
329 | } | |
330 | ||
1da177e4 | 331 | /* |
8e81bbba BP |
332 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
333 | * parameters and use the LBA parameters instead. | |
1da177e4 | 334 | */ |
07bd3f47 LT |
335 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive, |
336 | struct ide_atapi_pc *pc) | |
1da177e4 | 337 | { |
0df96277 | 338 | struct ide_disk_obj *floppy = drive->driver_data; |
2ac07d92 | 339 | struct gendisk *disk = floppy->disk; |
8e81bbba | 340 | u8 *page; |
1da177e4 | 341 | int capacity, lba_capacity; |
8e81bbba BP |
342 | u16 transfer_rate, sector_size, cyls, rpm; |
343 | u8 heads, sectors; | |
1da177e4 | 344 | |
07bd3f47 | 345 | ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
8e81bbba | 346 | |
07bd3f47 | 347 | if (ide_queue_pc_tail(drive, disk, pc)) { |
7b355726 | 348 | printk(KERN_ERR PFX "Can't get flexible disk page params\n"); |
1da177e4 LT |
349 | return 1; |
350 | } | |
49cac39e | 351 | |
07bd3f47 | 352 | if (pc->buf[3] & 0x80) |
da167876 | 353 | drive->dev_flags |= IDE_DFLAG_WP; |
49cac39e | 354 | else |
da167876 | 355 | drive->dev_flags &= ~IDE_DFLAG_WP; |
49cac39e | 356 | |
da167876 | 357 | set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP)); |
49cac39e | 358 | |
07bd3f47 | 359 | page = &pc->buf[8]; |
8e81bbba | 360 | |
07bd3f47 LT |
361 | transfer_rate = be16_to_cpup((__be16 *)&pc->buf[8 + 2]); |
362 | sector_size = be16_to_cpup((__be16 *)&pc->buf[8 + 6]); | |
363 | cyls = be16_to_cpup((__be16 *)&pc->buf[8 + 8]); | |
364 | rpm = be16_to_cpup((__be16 *)&pc->buf[8 + 28]); | |
365 | heads = pc->buf[8 + 4]; | |
366 | sectors = pc->buf[8 + 5]; | |
8e81bbba BP |
367 | |
368 | capacity = cyls * heads * sectors * sector_size; | |
369 | ||
370 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
7b355726 | 371 | printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
1da177e4 | 372 | "%d sector size, %d rpm\n", |
8e81bbba BP |
373 | drive->name, capacity / 1024, cyls, heads, |
374 | sectors, transfer_rate / 8, sector_size, rpm); | |
375 | ||
376 | memcpy(&floppy->flexible_disk_page, page, 32); | |
377 | drive->bios_cyl = cyls; | |
378 | drive->bios_head = heads; | |
379 | drive->bios_sect = sectors; | |
1da177e4 | 380 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 381 | |
1da177e4 | 382 | if (capacity < lba_capacity) { |
7b355726 | 383 | printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d " |
1da177e4 LT |
384 | "bytes, but the drive only handles %d\n", |
385 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
386 | floppy->blocks = floppy->block_size ? |
387 | capacity / floppy->block_size : 0; | |
6f84083b | 388 | drive->capacity64 = floppy->blocks * floppy->bs_factor; |
1da177e4 | 389 | } |
6f84083b | 390 | |
1da177e4 LT |
391 | return 0; |
392 | } | |
393 | ||
1da177e4 | 394 | /* |
194ec0c0 BP |
395 | * Determine if a media is present in the floppy drive, and if so, its LBA |
396 | * capacity. | |
1da177e4 | 397 | */ |
806f80a6 | 398 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 | 399 | { |
0df96277 | 400 | struct ide_disk_obj *floppy = drive->driver_data; |
2ac07d92 | 401 | struct gendisk *disk = floppy->disk; |
8e555123 | 402 | struct ide_atapi_pc pc; |
194ec0c0 BP |
403 | u8 *cap_desc; |
404 | u8 header_len, desc_cnt; | |
405 | int i, rc = 1, blocks, length; | |
406 | ||
1da177e4 LT |
407 | drive->bios_cyl = 0; |
408 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
409 | floppy->blocks = 0; |
410 | floppy->bs_factor = 1; | |
6f84083b | 411 | drive->capacity64 = 0; |
1da177e4 | 412 | |
0127854d | 413 | ide_floppy_create_read_capacity_cmd(&pc); |
2ac07d92 | 414 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
7b355726 | 415 | printk(KERN_ERR PFX "Can't get floppy parameters\n"); |
1da177e4 LT |
416 | return 1; |
417 | } | |
8e555123 BP |
418 | header_len = pc.buf[3]; |
419 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
420 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
421 | ||
422 | for (i = 0; i < desc_cnt; i++) { | |
423 | unsigned int desc_start = 4 + i*8; | |
424 | ||
85ae98a3 HH |
425 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
426 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 | 427 | |
7b355726 | 428 | ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, " |
088b1b88 BP |
429 | "%d sector size", |
430 | i, blocks * length / 1024, | |
431 | blocks, length); | |
1da177e4 | 432 | |
194ec0c0 BP |
433 | if (i) |
434 | continue; | |
435 | /* | |
436 | * the code below is valid only for the 1st descriptor, ie i=0 | |
437 | */ | |
1da177e4 | 438 | |
8e555123 | 439 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
440 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
441 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 442 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 443 | /* |
1da177e4 LT |
444 | * If it is not a clik drive, break out |
445 | * (maintains previous driver behaviour) | |
446 | */ | |
447 | break; | |
448 | case CAPACITY_CURRENT: | |
449 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 450 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
7b355726 BP |
451 | printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d " |
452 | "sector size\n", | |
453 | drive->name, blocks * length / 1024, | |
454 | blocks, length); | |
194ec0c0 BP |
455 | memcpy(&floppy->cap_desc, cap_desc, 8); |
456 | ||
1da177e4 | 457 | if (!length || length % 512) { |
7b355726 BP |
458 | printk(KERN_NOTICE PFX "%s: %d bytes block size" |
459 | " not supported\n", drive->name, length); | |
1da177e4 | 460 | } else { |
194ec0c0 BP |
461 | floppy->blocks = blocks; |
462 | floppy->block_size = length; | |
463 | floppy->bs_factor = length / 512; | |
464 | if (floppy->bs_factor != 1) | |
7b355726 BP |
465 | printk(KERN_NOTICE PFX "%s: Warning: " |
466 | "non 512 bytes block size not " | |
467 | "fully supported\n", | |
468 | drive->name); | |
6f84083b BZ |
469 | drive->capacity64 = |
470 | floppy->blocks * floppy->bs_factor; | |
194ec0c0 | 471 | rc = 0; |
1da177e4 LT |
472 | } |
473 | break; | |
474 | case CAPACITY_NO_CARTRIDGE: | |
475 | /* | |
476 | * This is a KERN_ERR so it appears on screen | |
477 | * for the user to see | |
478 | */ | |
7b355726 BP |
479 | printk(KERN_ERR PFX "%s: No disk in drive\n", |
480 | drive->name); | |
1da177e4 LT |
481 | break; |
482 | case CAPACITY_INVALID: | |
7b355726 | 483 | printk(KERN_ERR PFX "%s: Invalid capacity for disk " |
1da177e4 LT |
484 | "in drive\n", drive->name); |
485 | break; | |
486 | } | |
088b1b88 BP |
487 | ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d", |
488 | pc.buf[desc_start + 4] & 0x03); | |
1da177e4 LT |
489 | } |
490 | ||
491 | /* Clik! disk does not support get_flexible_disk_page */ | |
ea68d270 | 492 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
07bd3f47 | 493 | (void) ide_floppy_get_flexible_disk_page(drive, &pc); |
1da177e4 | 494 | |
1da177e4 LT |
495 | return rc; |
496 | } | |
497 | ||
806f80a6 | 498 | static void ide_floppy_setup(ide_drive_t *drive) |
1da177e4 | 499 | { |
806f80a6 | 500 | struct ide_disk_obj *floppy = drive->driver_data; |
4dde4492 | 501 | u16 *id = drive->id; |
2e8a6f89 | 502 | |
85e39035 BZ |
503 | drive->pc_callback = ide_floppy_callback; |
504 | drive->pc_update_buffers = idefloppy_update_buffers; | |
505 | drive->pc_io_buffers = ide_io_buffers; | |
3ad6776c | 506 | |
1da177e4 | 507 | /* |
0571c7a4 BP |
508 | * We used to check revisions here. At this point however I'm giving up. |
509 | * Just assume they are all broken, its easier. | |
1da177e4 | 510 | * |
0571c7a4 BP |
511 | * The actual reason for the workarounds was likely a driver bug after |
512 | * all rather than a firmware bug, and the workaround below used to hide | |
513 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
514 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 515 | */ |
4dde4492 | 516 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
ea68d270 | 517 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 | 518 | /* This value will be visible in the /proc/ide/hdx/settings */ |
baf08f0b | 519 | drive->pc_delay = IDEFLOPPY_PC_DELAY; |
1da177e4 LT |
520 | blk_queue_max_sectors(drive->queue, 64); |
521 | } | |
522 | ||
523 | /* | |
0571c7a4 BP |
524 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
525 | * nasty clicking noises without it, so please don't remove this. | |
526 | */ | |
4dde4492 | 527 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
1da177e4 | 528 | blk_queue_max_sectors(drive->queue, 64); |
ea68d270 | 529 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
0578042d | 530 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
42619d35 | 531 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
1da177e4 LT |
532 | } |
533 | ||
194ec0c0 | 534 | (void) ide_floppy_get_capacity(drive); |
1e874f44 BZ |
535 | |
536 | ide_proc_register_driver(drive, floppy->driver); | |
ae9f9f07 BZ |
537 | |
538 | drive->dev_flags |= IDE_DFLAG_ATTACH; | |
1da177e4 | 539 | } |
806f80a6 BZ |
540 | |
541 | static void ide_floppy_flush(ide_drive_t *drive) | |
542 | { | |
543 | } | |
544 | ||
545 | static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk) | |
546 | { | |
547 | int ret = 0; | |
548 | ||
549 | if (ide_do_test_unit_ready(drive, disk)) | |
550 | ide_do_start_stop(drive, disk, 1); | |
551 | ||
552 | ret = ide_floppy_get_capacity(drive); | |
553 | ||
554 | set_capacity(disk, ide_gd_capacity(drive)); | |
555 | ||
556 | return ret; | |
557 | } | |
558 | ||
559 | const struct ide_disk_ops ide_atapi_disk_ops = { | |
560 | .check = ide_check_atapi_device, | |
561 | .get_capacity = ide_floppy_get_capacity, | |
562 | .setup = ide_floppy_setup, | |
563 | .flush = ide_floppy_flush, | |
564 | .init_media = ide_floppy_init_media, | |
565 | .set_doorlock = ide_set_media_lock, | |
566 | .do_request = ide_floppy_do_request, | |
567 | .end_request = ide_floppy_end_request, | |
568 | .ioctl = ide_floppy_ioctl, | |
569 | }; |