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 | ||
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 | |
8e555123 BP |
64 | static void idefloppy_update_buffers(ide_drive_t *drive, |
65 | struct ide_atapi_pc *pc) | |
1da177e4 LT |
66 | { |
67 | struct request *rq = pc->rq; | |
68 | struct bio *bio = rq->bio; | |
69 | ||
70 | while ((bio = rq->bio) != NULL) | |
130e8867 | 71 | ide_complete_rq(drive, 0, ide_rq_bytes(rq)); |
1da177e4 LT |
72 | } |
73 | ||
03a2faae | 74 | static int ide_floppy_callback(ide_drive_t *drive, int dsc) |
1da177e4 | 75 | { |
0df96277 | 76 | struct ide_disk_obj *floppy = drive->driver_data; |
2b9efba4 | 77 | struct ide_atapi_pc *pc = drive->pc; |
313afea7 | 78 | struct request *rq = pc->rq; |
81f49382 | 79 | int uptodate = pc->error ? 0 : 1; |
1da177e4 | 80 | |
088b1b88 | 81 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
bcc77d9c | 82 | |
5e2040fd BZ |
83 | if (drive->failed_pc == pc) |
84 | drive->failed_pc = NULL; | |
dd2e9a03 | 85 | |
81f49382 | 86 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
313afea7 | 87 | (rq && blk_pc_request(rq))) |
81f49382 BP |
88 | uptodate = 1; /* FIXME */ |
89 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
2b9efba4 | 90 | u8 *buf = pc->buf; |
a6ff2d3b | 91 | |
81f49382 BP |
92 | if (!pc->error) { |
93 | floppy->sense_key = buf[2] & 0x0F; | |
94 | floppy->asc = buf[12]; | |
95 | floppy->ascq = buf[13]; | |
96 | floppy->progress_indication = buf[15] & 0x80 ? | |
97 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 98 | |
5e2040fd | 99 | if (drive->failed_pc) |
088b1b88 | 100 | ide_debug_log(IDE_DBG_PC, "pc = %x", |
5e2040fd | 101 | drive->failed_pc->c[0]); |
bcc77d9c | 102 | |
7b355726 | 103 | ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x," |
088b1b88 | 104 | "ascq = %x", floppy->sense_key, |
7b355726 | 105 | floppy->asc, floppy->ascq); |
81f49382 | 106 | } else |
7b355726 BP |
107 | printk(KERN_ERR PFX "Error in REQUEST SENSE itself - " |
108 | "Aborting request!\n"); | |
81f49382 | 109 | } |
1da177e4 | 110 | |
03a2faae | 111 | if (blk_special_request(rq)) |
313afea7 | 112 | rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL; |
03a2faae BZ |
113 | |
114 | return uptodate; | |
1da177e4 LT |
115 | } |
116 | ||
0df96277 | 117 | static void ide_floppy_report_error(struct ide_disk_obj *floppy, |
8e555123 | 118 | struct ide_atapi_pc *pc) |
1da177e4 | 119 | { |
d652c138 | 120 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
121 | if (floppy->sense_key == 0x02 && |
122 | floppy->asc == 0x3a && | |
123 | floppy->ascq == 0x00) | |
d652c138 BP |
124 | return; |
125 | ||
7b355726 | 126 | printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, " |
d652c138 BP |
127 | "asc = %2x, ascq = %2x\n", |
128 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
129 | floppy->asc, floppy->ascq); | |
130 | ||
1da177e4 LT |
131 | } |
132 | ||
b788ee9c BZ |
133 | static ide_startstop_t ide_floppy_issue_pc(ide_drive_t *drive, |
134 | struct ide_cmd *cmd, | |
135 | struct ide_atapi_pc *pc) | |
1da177e4 | 136 | { |
0df96277 | 137 | struct ide_disk_obj *floppy = drive->driver_data; |
1da177e4 | 138 | |
5e2040fd | 139 | if (drive->failed_pc == NULL && |
30d67099 | 140 | pc->c[0] != GPCMD_REQUEST_SENSE) |
5e2040fd | 141 | drive->failed_pc = pc; |
2b9efba4 | 142 | |
1da177e4 | 143 | /* Set the current packet command */ |
2b9efba4 | 144 | drive->pc = pc; |
1da177e4 | 145 | |
757ced89 | 146 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 147 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
148 | ide_floppy_report_error(floppy, pc); |
149 | /* Giving up */ | |
c152cc1a | 150 | pc->error = IDE_DRV_ERROR_GENERAL; |
757ced89 | 151 | |
5e2040fd | 152 | drive->failed_pc = NULL; |
b14c7212 | 153 | drive->pc_callback(drive, 0); |
1da177e4 LT |
154 | return ide_stopped; |
155 | } | |
156 | ||
088b1b88 | 157 | ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries); |
1da177e4 LT |
158 | |
159 | pc->retries++; | |
1da177e4 | 160 | |
b788ee9c | 161 | return ide_issue_pc(drive, cmd); |
1da177e4 LT |
162 | } |
163 | ||
0127854d | 164 | void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 165 | { |
7bf7420a | 166 | ide_init_pc(pc); |
30d67099 | 167 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
168 | pc->c[7] = 255; |
169 | pc->c[8] = 255; | |
8e555123 | 170 | pc->req_xfer = 255; |
1da177e4 LT |
171 | } |
172 | ||
0571c7a4 | 173 | /* A mode sense command is used to "sense" floppy parameters. */ |
0127854d | 174 | void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
1da177e4 | 175 | { |
24a5d703 | 176 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 177 | |
7bf7420a | 178 | ide_init_pc(pc); |
30d67099 | 179 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 | 180 | pc->c[1] = 0; |
4de4b9e1 | 181 | pc->c[2] = page_code; |
1da177e4 LT |
182 | |
183 | switch (page_code) { | |
0571c7a4 BP |
184 | case IDEFLOPPY_CAPABILITIES_PAGE: |
185 | length += 12; | |
186 | break; | |
187 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
188 | length += 32; | |
189 | break; | |
190 | default: | |
7b355726 | 191 | printk(KERN_ERR PFX "unsupported page code in %s\n", __func__); |
1da177e4 | 192 | } |
8f622430 | 193 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 194 | pc->req_xfer = length; |
1da177e4 LT |
195 | } |
196 | ||
7b355726 | 197 | static void idefloppy_create_rw_cmd(ide_drive_t *drive, |
8e555123 | 198 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 199 | unsigned long sector) |
1da177e4 | 200 | { |
0df96277 | 201 | struct ide_disk_obj *floppy = drive->driver_data; |
1da177e4 LT |
202 | int block = sector / floppy->bs_factor; |
203 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
204 | int cmd = rq_data_dir(rq); | |
205 | ||
088b1b88 | 206 | ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks); |
1da177e4 | 207 | |
7bf7420a | 208 | ide_init_pc(pc); |
ae7e8ddc BP |
209 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
210 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 211 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 212 | |
20cd93be BP |
213 | memcpy(rq->cmd, pc->c, 12); |
214 | ||
1da177e4 | 215 | pc->rq = rq; |
b98b3409 | 216 | pc->b_count = 0; |
4aff5e23 | 217 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 218 | pc->flags |= PC_FLAG_WRITING; |
8e555123 BP |
219 | pc->buf = NULL; |
220 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; | |
5e331095 | 221 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
222 | } |
223 | ||
0df96277 | 224 | static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy, |
8e555123 | 225 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 226 | { |
7bf7420a | 227 | ide_init_pc(pc); |
1da177e4 | 228 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf | 229 | pc->rq = rq; |
b98b3409 | 230 | pc->b_count = 0; |
3d6392cf | 231 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
6e5fa7b8 | 232 | pc->flags |= PC_FLAG_WRITING; |
8e555123 | 233 | pc->buf = rq->data; |
3d6392cf | 234 | if (rq->bio) |
5e331095 | 235 | pc->flags |= PC_FLAG_DMA_OK; |
3d6392cf JA |
236 | /* |
237 | * possibly problematic, doesn't look like ide-floppy correctly | |
238 | * handled scattered requests if dma fails... | |
239 | */ | |
8e555123 | 240 | pc->req_xfer = pc->buf_size = rq->data_len; |
1da177e4 LT |
241 | } |
242 | ||
806f80a6 BZ |
243 | static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, |
244 | struct request *rq, sector_t block) | |
1da177e4 | 245 | { |
0df96277 | 246 | struct ide_disk_obj *floppy = drive->driver_data; |
b98b3409 | 247 | ide_hwif_t *hwif = drive->hwif; |
b788ee9c | 248 | struct ide_cmd cmd; |
8e555123 | 249 | struct ide_atapi_pc *pc; |
1da177e4 | 250 | |
088b1b88 BP |
251 | if (drive->debug_mask & IDE_DBG_RQ) |
252 | blk_dump_rq_flags(rq, (rq->rq_disk | |
253 | ? rq->rq_disk->disk_name | |
254 | : "dev?")); | |
1da177e4 LT |
255 | |
256 | if (rq->errors >= ERROR_MAX) { | |
313afea7 | 257 | if (drive->failed_pc) { |
5e2040fd | 258 | ide_floppy_report_error(floppy, drive->failed_pc); |
313afea7 BZ |
259 | drive->failed_pc = NULL; |
260 | } else | |
7b355726 BP |
261 | printk(KERN_ERR PFX "%s: I/O error\n", drive->name); |
262 | ||
313afea7 | 263 | if (blk_special_request(rq)) { |
6902a533 | 264 | rq->errors = 0; |
f974b196 | 265 | ide_complete_rq(drive, 0, blk_rq_bytes(rq)); |
313afea7 BZ |
266 | return ide_stopped; |
267 | } else | |
268 | goto out_end; | |
1da177e4 | 269 | } |
4aff5e23 | 270 | if (blk_fs_request(rq)) { |
1da177e4 LT |
271 | if (((long)rq->sector % floppy->bs_factor) || |
272 | (rq->nr_sectors % floppy->bs_factor)) { | |
7b355726 BP |
273 | printk(KERN_ERR PFX "%s: unsupported r/w rq size\n", |
274 | drive->name); | |
313afea7 | 275 | goto out_end; |
1da177e4 | 276 | } |
2e8a6f89 | 277 | pc = &floppy->queued_pc; |
806f80a6 | 278 | idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block); |
4aff5e23 | 279 | } else if (blk_special_request(rq)) { |
8e555123 | 280 | pc = (struct ide_atapi_pc *) rq->buffer; |
4aff5e23 | 281 | } else if (blk_pc_request(rq)) { |
2e8a6f89 | 282 | pc = &floppy->queued_pc; |
3d6392cf | 283 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 | 284 | } else { |
7b355726 | 285 | blk_dump_rq_flags(rq, PFX "unsupported command in queue"); |
313afea7 | 286 | goto out_end; |
1da177e4 LT |
287 | } |
288 | ||
b788ee9c BZ |
289 | memset(&cmd, 0, sizeof(cmd)); |
290 | ||
22981694 | 291 | if (rq_data_dir(rq)) |
b788ee9c BZ |
292 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
293 | ||
294 | cmd.rq = rq; | |
22981694 | 295 | |
3eb76c1c | 296 | if (blk_fs_request(rq) || pc->req_xfer) { |
bf717c0a | 297 | ide_init_sg_cmd(&cmd, rq->nr_sectors << 9); |
b788ee9c | 298 | ide_map_sg(drive, &cmd); |
3eb76c1c | 299 | } |
b98b3409 BP |
300 | |
301 | pc->sg = hwif->sg_table; | |
b788ee9c | 302 | pc->sg_cnt = cmd.sg_nents; |
b98b3409 | 303 | |
1da177e4 | 304 | pc->rq = rq; |
5d41893c | 305 | |
b788ee9c | 306 | return ide_floppy_issue_pc(drive, &cmd, pc); |
313afea7 BZ |
307 | out_end: |
308 | drive->failed_pc = NULL; | |
89f78b32 BZ |
309 | if (blk_fs_request(rq) == 0 && rq->errors == 0) |
310 | rq->errors = -EIO; | |
130e8867 | 311 | ide_complete_rq(drive, -EIO, ide_rq_bytes(rq)); |
313afea7 | 312 | return ide_stopped; |
1da177e4 LT |
313 | } |
314 | ||
1da177e4 | 315 | /* |
8e81bbba BP |
316 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
317 | * parameters and use the LBA parameters instead. | |
1da177e4 | 318 | */ |
07bd3f47 LT |
319 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive, |
320 | struct ide_atapi_pc *pc) | |
1da177e4 | 321 | { |
0df96277 | 322 | struct ide_disk_obj *floppy = drive->driver_data; |
2ac07d92 | 323 | struct gendisk *disk = floppy->disk; |
8e81bbba | 324 | u8 *page; |
1da177e4 | 325 | int capacity, lba_capacity; |
8e81bbba BP |
326 | u16 transfer_rate, sector_size, cyls, rpm; |
327 | u8 heads, sectors; | |
1da177e4 | 328 | |
07bd3f47 | 329 | ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
8e81bbba | 330 | |
07bd3f47 | 331 | if (ide_queue_pc_tail(drive, disk, pc)) { |
7b355726 | 332 | printk(KERN_ERR PFX "Can't get flexible disk page params\n"); |
1da177e4 LT |
333 | return 1; |
334 | } | |
49cac39e | 335 | |
07bd3f47 | 336 | if (pc->buf[3] & 0x80) |
da167876 | 337 | drive->dev_flags |= IDE_DFLAG_WP; |
49cac39e | 338 | else |
da167876 | 339 | drive->dev_flags &= ~IDE_DFLAG_WP; |
49cac39e | 340 | |
da167876 | 341 | set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP)); |
49cac39e | 342 | |
07bd3f47 | 343 | page = &pc->buf[8]; |
8e81bbba | 344 | |
07bd3f47 LT |
345 | transfer_rate = be16_to_cpup((__be16 *)&pc->buf[8 + 2]); |
346 | sector_size = be16_to_cpup((__be16 *)&pc->buf[8 + 6]); | |
347 | cyls = be16_to_cpup((__be16 *)&pc->buf[8 + 8]); | |
348 | rpm = be16_to_cpup((__be16 *)&pc->buf[8 + 28]); | |
349 | heads = pc->buf[8 + 4]; | |
350 | sectors = pc->buf[8 + 5]; | |
8e81bbba BP |
351 | |
352 | capacity = cyls * heads * sectors * sector_size; | |
353 | ||
354 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
7b355726 | 355 | printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
1da177e4 | 356 | "%d sector size, %d rpm\n", |
8e81bbba BP |
357 | drive->name, capacity / 1024, cyls, heads, |
358 | sectors, transfer_rate / 8, sector_size, rpm); | |
359 | ||
360 | memcpy(&floppy->flexible_disk_page, page, 32); | |
361 | drive->bios_cyl = cyls; | |
362 | drive->bios_head = heads; | |
363 | drive->bios_sect = sectors; | |
1da177e4 | 364 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 365 | |
1da177e4 | 366 | if (capacity < lba_capacity) { |
7b355726 | 367 | printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d " |
1da177e4 LT |
368 | "bytes, but the drive only handles %d\n", |
369 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
370 | floppy->blocks = floppy->block_size ? |
371 | capacity / floppy->block_size : 0; | |
6f84083b | 372 | drive->capacity64 = floppy->blocks * floppy->bs_factor; |
1da177e4 | 373 | } |
6f84083b | 374 | |
1da177e4 LT |
375 | return 0; |
376 | } | |
377 | ||
1da177e4 | 378 | /* |
194ec0c0 BP |
379 | * Determine if a media is present in the floppy drive, and if so, its LBA |
380 | * capacity. | |
1da177e4 | 381 | */ |
806f80a6 | 382 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 | 383 | { |
0df96277 | 384 | struct ide_disk_obj *floppy = drive->driver_data; |
2ac07d92 | 385 | struct gendisk *disk = floppy->disk; |
8e555123 | 386 | struct ide_atapi_pc pc; |
194ec0c0 BP |
387 | u8 *cap_desc; |
388 | u8 header_len, desc_cnt; | |
389 | int i, rc = 1, blocks, length; | |
390 | ||
1da177e4 LT |
391 | drive->bios_cyl = 0; |
392 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
393 | floppy->blocks = 0; |
394 | floppy->bs_factor = 1; | |
6f84083b | 395 | drive->capacity64 = 0; |
1da177e4 | 396 | |
0127854d | 397 | ide_floppy_create_read_capacity_cmd(&pc); |
2ac07d92 | 398 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
7b355726 | 399 | printk(KERN_ERR PFX "Can't get floppy parameters\n"); |
1da177e4 LT |
400 | return 1; |
401 | } | |
8e555123 BP |
402 | header_len = pc.buf[3]; |
403 | cap_desc = &pc.buf[4]; | |
194ec0c0 BP |
404 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
405 | ||
406 | for (i = 0; i < desc_cnt; i++) { | |
407 | unsigned int desc_start = 4 + i*8; | |
408 | ||
85ae98a3 HH |
409 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
410 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); | |
194ec0c0 | 411 | |
7b355726 | 412 | ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, " |
088b1b88 BP |
413 | "%d sector size", |
414 | i, blocks * length / 1024, | |
415 | blocks, length); | |
1da177e4 | 416 | |
194ec0c0 BP |
417 | if (i) |
418 | continue; | |
419 | /* | |
420 | * the code below is valid only for the 1st descriptor, ie i=0 | |
421 | */ | |
1da177e4 | 422 | |
8e555123 | 423 | switch (pc.buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
424 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
425 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 426 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 427 | /* |
1da177e4 LT |
428 | * If it is not a clik drive, break out |
429 | * (maintains previous driver behaviour) | |
430 | */ | |
431 | break; | |
432 | case CAPACITY_CURRENT: | |
433 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 434 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
7b355726 BP |
435 | printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d " |
436 | "sector size\n", | |
437 | drive->name, blocks * length / 1024, | |
438 | blocks, length); | |
194ec0c0 BP |
439 | memcpy(&floppy->cap_desc, cap_desc, 8); |
440 | ||
1da177e4 | 441 | if (!length || length % 512) { |
7b355726 BP |
442 | printk(KERN_NOTICE PFX "%s: %d bytes block size" |
443 | " not supported\n", drive->name, length); | |
1da177e4 | 444 | } else { |
194ec0c0 BP |
445 | floppy->blocks = blocks; |
446 | floppy->block_size = length; | |
447 | floppy->bs_factor = length / 512; | |
448 | if (floppy->bs_factor != 1) | |
7b355726 BP |
449 | printk(KERN_NOTICE PFX "%s: Warning: " |
450 | "non 512 bytes block size not " | |
451 | "fully supported\n", | |
452 | drive->name); | |
6f84083b BZ |
453 | drive->capacity64 = |
454 | floppy->blocks * floppy->bs_factor; | |
194ec0c0 | 455 | rc = 0; |
1da177e4 LT |
456 | } |
457 | break; | |
458 | case CAPACITY_NO_CARTRIDGE: | |
459 | /* | |
460 | * This is a KERN_ERR so it appears on screen | |
461 | * for the user to see | |
462 | */ | |
7b355726 BP |
463 | printk(KERN_ERR PFX "%s: No disk in drive\n", |
464 | drive->name); | |
1da177e4 LT |
465 | break; |
466 | case CAPACITY_INVALID: | |
7b355726 | 467 | printk(KERN_ERR PFX "%s: Invalid capacity for disk " |
1da177e4 LT |
468 | "in drive\n", drive->name); |
469 | break; | |
470 | } | |
088b1b88 BP |
471 | ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d", |
472 | pc.buf[desc_start + 4] & 0x03); | |
1da177e4 LT |
473 | } |
474 | ||
475 | /* Clik! disk does not support get_flexible_disk_page */ | |
ea68d270 | 476 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
07bd3f47 | 477 | (void) ide_floppy_get_flexible_disk_page(drive, &pc); |
1da177e4 | 478 | |
1da177e4 LT |
479 | return rc; |
480 | } | |
481 | ||
806f80a6 | 482 | static void ide_floppy_setup(ide_drive_t *drive) |
1da177e4 | 483 | { |
806f80a6 | 484 | struct ide_disk_obj *floppy = drive->driver_data; |
4dde4492 | 485 | u16 *id = drive->id; |
2e8a6f89 | 486 | |
85e39035 BZ |
487 | drive->pc_callback = ide_floppy_callback; |
488 | drive->pc_update_buffers = idefloppy_update_buffers; | |
489 | drive->pc_io_buffers = ide_io_buffers; | |
3ad6776c | 490 | |
1da177e4 | 491 | /* |
0571c7a4 BP |
492 | * We used to check revisions here. At this point however I'm giving up. |
493 | * Just assume they are all broken, its easier. | |
1da177e4 | 494 | * |
0571c7a4 BP |
495 | * The actual reason for the workarounds was likely a driver bug after |
496 | * all rather than a firmware bug, and the workaround below used to hide | |
497 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
498 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 499 | */ |
4dde4492 | 500 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
ea68d270 | 501 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 | 502 | /* This value will be visible in the /proc/ide/hdx/settings */ |
baf08f0b | 503 | drive->pc_delay = IDEFLOPPY_PC_DELAY; |
1da177e4 LT |
504 | blk_queue_max_sectors(drive->queue, 64); |
505 | } | |
506 | ||
507 | /* | |
0571c7a4 BP |
508 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
509 | * nasty clicking noises without it, so please don't remove this. | |
510 | */ | |
4dde4492 | 511 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
1da177e4 | 512 | blk_queue_max_sectors(drive->queue, 64); |
ea68d270 | 513 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
0578042d | 514 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
42619d35 | 515 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
1da177e4 LT |
516 | } |
517 | ||
194ec0c0 | 518 | (void) ide_floppy_get_capacity(drive); |
1e874f44 BZ |
519 | |
520 | ide_proc_register_driver(drive, floppy->driver); | |
ae9f9f07 BZ |
521 | |
522 | drive->dev_flags |= IDE_DFLAG_ATTACH; | |
1da177e4 | 523 | } |
806f80a6 BZ |
524 | |
525 | static void ide_floppy_flush(ide_drive_t *drive) | |
526 | { | |
527 | } | |
528 | ||
529 | static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk) | |
530 | { | |
531 | int ret = 0; | |
532 | ||
533 | if (ide_do_test_unit_ready(drive, disk)) | |
534 | ide_do_start_stop(drive, disk, 1); | |
535 | ||
536 | ret = ide_floppy_get_capacity(drive); | |
537 | ||
538 | set_capacity(disk, ide_gd_capacity(drive)); | |
539 | ||
540 | return ret; | |
541 | } | |
542 | ||
543 | const struct ide_disk_ops ide_atapi_disk_ops = { | |
544 | .check = ide_check_atapi_device, | |
545 | .get_capacity = ide_floppy_get_capacity, | |
546 | .setup = ide_floppy_setup, | |
547 | .flush = ide_floppy_flush, | |
548 | .init_media = ide_floppy_init_media, | |
549 | .set_doorlock = ide_set_media_lock, | |
550 | .do_request = ide_floppy_do_request, | |
806f80a6 BZ |
551 | .ioctl = ide_floppy_ioctl, |
552 | }; |