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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
d3f20848 BP |
3 | * IDE ATAPI floppy driver. |
4 | * | |
59bca8cc BZ |
5 | * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> |
6 | * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> | |
7 | * Copyright (C) 2005 Bartlomiej Zolnierkiewicz | |
0571c7a4 | 8 | * |
1da177e4 LT |
9 | * This driver supports the following IDE floppy drives: |
10 | * | |
11 | * LS-120/240 SuperDisk | |
12 | * Iomega Zip 100/250 | |
13 | * Iomega PC Card Clik!/PocketZip | |
14 | * | |
d3f20848 BP |
15 | * For a historical changelog see |
16 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 | |
1da177e4 LT |
17 | */ |
18 | ||
1da177e4 LT |
19 | #include <linux/types.h> |
20 | #include <linux/string.h> | |
21 | #include <linux/kernel.h> | |
c103d6ee | 22 | #include <linux/compat.h> |
1da177e4 LT |
23 | #include <linux/delay.h> |
24 | #include <linux/timer.h> | |
25 | #include <linux/mm.h> | |
26 | #include <linux/interrupt.h> | |
27 | #include <linux/major.h> | |
28 | #include <linux/errno.h> | |
29 | #include <linux/genhd.h> | |
1da177e4 LT |
30 | #include <linux/cdrom.h> |
31 | #include <linux/ide.h> | |
3ceca727 | 32 | #include <linux/hdreg.h> |
1da177e4 | 33 | #include <linux/bitops.h> |
cf8b8975 | 34 | #include <linux/mutex.h> |
b98b3409 | 35 | #include <linux/scatterlist.h> |
1da177e4 | 36 | |
89636af2 BZ |
37 | #include <scsi/scsi_ioctl.h> |
38 | ||
1da177e4 | 39 | #include <asm/byteorder.h> |
7e8b163b BP |
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 | |
03a2faae | 64 | static int ide_floppy_callback(ide_drive_t *drive, int dsc) |
1da177e4 | 65 | { |
0df96277 | 66 | struct ide_disk_obj *floppy = drive->driver_data; |
2b9efba4 | 67 | struct ide_atapi_pc *pc = drive->pc; |
313afea7 | 68 | struct request *rq = pc->rq; |
81f49382 | 69 | int uptodate = pc->error ? 0 : 1; |
1da177e4 | 70 | |
088b1b88 | 71 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
bcc77d9c | 72 | |
5e2040fd BZ |
73 | if (drive->failed_pc == pc) |
74 | drive->failed_pc = NULL; | |
dd2e9a03 | 75 | |
81f49382 | 76 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
07d4b02d | 77 | blk_rq_is_scsi(rq)) |
81f49382 BP |
78 | uptodate = 1; /* FIXME */ |
79 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { | |
ae3a8387 BP |
80 | |
81 | u8 *buf = bio_data(rq->bio); | |
a6ff2d3b | 82 | |
81f49382 BP |
83 | if (!pc->error) { |
84 | floppy->sense_key = buf[2] & 0x0F; | |
85 | floppy->asc = buf[12]; | |
86 | floppy->ascq = buf[13]; | |
87 | floppy->progress_indication = buf[15] & 0x80 ? | |
88 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
a6ff2d3b | 89 | |
5e2040fd | 90 | if (drive->failed_pc) |
088b1b88 | 91 | ide_debug_log(IDE_DBG_PC, "pc = %x", |
5e2040fd | 92 | drive->failed_pc->c[0]); |
bcc77d9c | 93 | |
7b355726 | 94 | ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x," |
088b1b88 | 95 | "ascq = %x", floppy->sense_key, |
7b355726 | 96 | floppy->asc, floppy->ascq); |
81f49382 | 97 | } else |
7b355726 BP |
98 | printk(KERN_ERR PFX "Error in REQUEST SENSE itself - " |
99 | "Aborting request!\n"); | |
81f49382 | 100 | } |
1da177e4 | 101 | |
2f5a8e80 | 102 | if (ata_misc_request(rq)) |
17d5363b | 103 | scsi_req(rq)->result = uptodate ? 0 : IDE_DRV_ERROR_GENERAL; |
03a2faae BZ |
104 | |
105 | return uptodate; | |
1da177e4 LT |
106 | } |
107 | ||
0df96277 | 108 | static void ide_floppy_report_error(struct ide_disk_obj *floppy, |
8e555123 | 109 | struct ide_atapi_pc *pc) |
1da177e4 | 110 | { |
25985edc | 111 | /* suppress error messages resulting from Medium not present */ |
1da177e4 LT |
112 | if (floppy->sense_key == 0x02 && |
113 | floppy->asc == 0x3a && | |
114 | floppy->ascq == 0x00) | |
d652c138 BP |
115 | return; |
116 | ||
7b355726 | 117 | printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, " |
d652c138 BP |
118 | "asc = %2x, ascq = %2x\n", |
119 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
120 | floppy->asc, floppy->ascq); | |
121 | ||
1da177e4 LT |
122 | } |
123 | ||
b788ee9c BZ |
124 | static ide_startstop_t ide_floppy_issue_pc(ide_drive_t *drive, |
125 | struct ide_cmd *cmd, | |
126 | struct ide_atapi_pc *pc) | |
1da177e4 | 127 | { |
0df96277 | 128 | struct ide_disk_obj *floppy = drive->driver_data; |
1da177e4 | 129 | |
5e2040fd | 130 | if (drive->failed_pc == NULL && |
30d67099 | 131 | pc->c[0] != GPCMD_REQUEST_SENSE) |
5e2040fd | 132 | drive->failed_pc = pc; |
2b9efba4 | 133 | |
1da177e4 | 134 | /* Set the current packet command */ |
2b9efba4 | 135 | drive->pc = pc; |
1da177e4 | 136 | |
757ced89 | 137 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
eb6a61bb TH |
138 | unsigned int done = blk_rq_bytes(drive->hwif->rq); |
139 | ||
6e5fa7b8 | 140 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 | 141 | ide_floppy_report_error(floppy, pc); |
eb6a61bb | 142 | |
757ced89 | 143 | /* Giving up */ |
c152cc1a | 144 | pc->error = IDE_DRV_ERROR_GENERAL; |
757ced89 | 145 | |
5e2040fd | 146 | drive->failed_pc = NULL; |
b14c7212 | 147 | drive->pc_callback(drive, 0); |
2a842aca | 148 | ide_complete_rq(drive, BLK_STS_IOERR, done); |
1da177e4 LT |
149 | return ide_stopped; |
150 | } | |
151 | ||
088b1b88 | 152 | ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries); |
1da177e4 LT |
153 | |
154 | pc->retries++; | |
1da177e4 | 155 | |
b788ee9c | 156 | return ide_issue_pc(drive, cmd); |
1da177e4 LT |
157 | } |
158 | ||
0127854d | 159 | void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
1da177e4 | 160 | { |
7bf7420a | 161 | ide_init_pc(pc); |
30d67099 | 162 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
163 | pc->c[7] = 255; |
164 | pc->c[8] = 255; | |
8e555123 | 165 | pc->req_xfer = 255; |
1da177e4 LT |
166 | } |
167 | ||
0571c7a4 | 168 | /* A mode sense command is used to "sense" floppy parameters. */ |
0127854d | 169 | void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
1da177e4 | 170 | { |
24a5d703 | 171 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 172 | |
7bf7420a | 173 | ide_init_pc(pc); |
30d67099 | 174 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 | 175 | pc->c[1] = 0; |
4de4b9e1 | 176 | pc->c[2] = page_code; |
1da177e4 LT |
177 | |
178 | switch (page_code) { | |
0571c7a4 BP |
179 | case IDEFLOPPY_CAPABILITIES_PAGE: |
180 | length += 12; | |
181 | break; | |
182 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
183 | length += 32; | |
184 | break; | |
185 | default: | |
7b355726 | 186 | printk(KERN_ERR PFX "unsupported page code in %s\n", __func__); |
1da177e4 | 187 | } |
8f622430 | 188 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
8e555123 | 189 | pc->req_xfer = length; |
1da177e4 LT |
190 | } |
191 | ||
7b355726 | 192 | static void idefloppy_create_rw_cmd(ide_drive_t *drive, |
8e555123 | 193 | struct ide_atapi_pc *pc, struct request *rq, |
ae7e8ddc | 194 | unsigned long sector) |
1da177e4 | 195 | { |
0df96277 | 196 | struct ide_disk_obj *floppy = drive->driver_data; |
1da177e4 | 197 | int block = sector / floppy->bs_factor; |
9780e2dd | 198 | int blocks = blk_rq_sectors(rq) / floppy->bs_factor; |
1da177e4 LT |
199 | int cmd = rq_data_dir(rq); |
200 | ||
088b1b88 | 201 | ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks); |
1da177e4 | 202 | |
7bf7420a | 203 | ide_init_pc(pc); |
ae7e8ddc BP |
204 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
205 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 206 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 207 | |
82ed4db4 | 208 | memcpy(scsi_req(rq)->cmd, pc->c, 12); |
20cd93be | 209 | |
1da177e4 | 210 | pc->rq = rq; |
c2df40df | 211 | if (cmd == WRITE) |
6e5fa7b8 | 212 | pc->flags |= PC_FLAG_WRITING; |
19f52a78 | 213 | |
5e331095 | 214 | pc->flags |= PC_FLAG_DMA_OK; |
1da177e4 LT |
215 | } |
216 | ||
0df96277 | 217 | static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy, |
8e555123 | 218 | struct ide_atapi_pc *pc, struct request *rq) |
1da177e4 | 219 | { |
7bf7420a | 220 | ide_init_pc(pc); |
82ed4db4 | 221 | memcpy(pc->c, scsi_req(rq)->cmd, sizeof(pc->c)); |
3d6392cf | 222 | pc->rq = rq; |
34b7d2c9 | 223 | if (blk_rq_bytes(rq)) { |
5e331095 | 224 | pc->flags |= PC_FLAG_DMA_OK; |
8968932e TH |
225 | if (rq_data_dir(rq) == WRITE) |
226 | pc->flags |= PC_FLAG_WRITING; | |
227 | } | |
1da177e4 LT |
228 | } |
229 | ||
806f80a6 BZ |
230 | static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, |
231 | struct request *rq, sector_t block) | |
1da177e4 | 232 | { |
0df96277 | 233 | struct ide_disk_obj *floppy = drive->driver_data; |
b788ee9c | 234 | struct ide_cmd cmd; |
8e555123 | 235 | struct ide_atapi_pc *pc; |
1da177e4 | 236 | |
349d12a1 BZ |
237 | ide_debug_log(IDE_DBG_FUNC, "enter, cmd: 0x%x\n", rq->cmd[0]); |
238 | ||
088b1b88 BP |
239 | if (drive->debug_mask & IDE_DBG_RQ) |
240 | blk_dump_rq_flags(rq, (rq->rq_disk | |
241 | ? rq->rq_disk->disk_name | |
242 | : "dev?")); | |
1da177e4 | 243 | |
17d5363b | 244 | if (scsi_req(rq)->result >= ERROR_MAX) { |
313afea7 | 245 | if (drive->failed_pc) { |
5e2040fd | 246 | ide_floppy_report_error(floppy, drive->failed_pc); |
313afea7 BZ |
247 | drive->failed_pc = NULL; |
248 | } else | |
7b355726 BP |
249 | printk(KERN_ERR PFX "%s: I/O error\n", drive->name); |
250 | ||
2f5a8e80 | 251 | if (ata_misc_request(rq)) { |
17d5363b | 252 | scsi_req(rq)->result = 0; |
2a842aca | 253 | ide_complete_rq(drive, BLK_STS_OK, blk_rq_bytes(rq)); |
313afea7 BZ |
254 | return ide_stopped; |
255 | } else | |
256 | goto out_end; | |
1da177e4 | 257 | } |
33659ebb | 258 | |
aebf526b CH |
259 | switch (req_op(rq)) { |
260 | default: | |
9780e2dd TH |
261 | if (((long)blk_rq_pos(rq) % floppy->bs_factor) || |
262 | (blk_rq_sectors(rq) % floppy->bs_factor)) { | |
7b355726 BP |
263 | printk(KERN_ERR PFX "%s: unsupported r/w rq size\n", |
264 | drive->name); | |
313afea7 | 265 | goto out_end; |
1da177e4 | 266 | } |
2e8a6f89 | 267 | pc = &floppy->queued_pc; |
806f80a6 | 268 | idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block); |
33659ebb | 269 | break; |
aebf526b CH |
270 | case REQ_OP_SCSI_IN: |
271 | case REQ_OP_SCSI_OUT: | |
2e8a6f89 | 272 | pc = &floppy->queued_pc; |
3d6392cf | 273 | idefloppy_blockpc_cmd(floppy, pc, rq); |
33659ebb | 274 | break; |
aebf526b CH |
275 | case REQ_OP_DRV_IN: |
276 | case REQ_OP_DRV_OUT: | |
2f5a8e80 CH |
277 | switch (ide_req(rq)->type) { |
278 | case ATA_PRIV_MISC: | |
279 | case ATA_PRIV_SENSE: | |
22ce0a7c | 280 | pc = (struct ide_atapi_pc *)ide_req(rq)->special; |
2f5a8e80 CH |
281 | break; |
282 | default: | |
283 | BUG(); | |
284 | } | |
33659ebb | 285 | } |
1da177e4 | 286 | |
06875320 BP |
287 | ide_prep_sense(drive, rq); |
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 | |
aebf526b | 296 | if (!blk_rq_is_passthrough(rq) || blk_rq_bytes(rq)) { |
dfb7e621 | 297 | ide_init_sg_cmd(&cmd, blk_rq_bytes(rq)); |
b788ee9c | 298 | ide_map_sg(drive, &cmd); |
3eb76c1c | 299 | } |
b98b3409 | 300 | |
1da177e4 | 301 | pc->rq = rq; |
5d41893c | 302 | |
b788ee9c | 303 | return ide_floppy_issue_pc(drive, &cmd, pc); |
313afea7 BZ |
304 | out_end: |
305 | drive->failed_pc = NULL; | |
17d5363b CH |
306 | if (blk_rq_is_passthrough(rq) && scsi_req(rq)->result == 0) |
307 | scsi_req(rq)->result = -EIO; | |
2a842aca | 308 | ide_complete_rq(drive, BLK_STS_IOERR, blk_rq_bytes(rq)); |
313afea7 | 309 | return ide_stopped; |
1da177e4 LT |
310 | } |
311 | ||
1da177e4 | 312 | /* |
8e81bbba BP |
313 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
314 | * parameters and use the LBA parameters instead. | |
1da177e4 | 315 | */ |
07bd3f47 LT |
316 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive, |
317 | struct ide_atapi_pc *pc) | |
1da177e4 | 318 | { |
0df96277 | 319 | struct ide_disk_obj *floppy = drive->driver_data; |
2ac07d92 | 320 | struct gendisk *disk = floppy->disk; |
d9a68307 | 321 | u8 *page, buf[40]; |
1da177e4 | 322 | int capacity, lba_capacity; |
8e81bbba BP |
323 | u16 transfer_rate, sector_size, cyls, rpm; |
324 | u8 heads, sectors; | |
1da177e4 | 325 | |
07bd3f47 | 326 | ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
8e81bbba | 327 | |
d9a68307 | 328 | if (ide_queue_pc_tail(drive, disk, pc, buf, pc->req_xfer)) { |
7b355726 | 329 | printk(KERN_ERR PFX "Can't get flexible disk page params\n"); |
1da177e4 LT |
330 | return 1; |
331 | } | |
49cac39e | 332 | |
d9a68307 | 333 | if (buf[3] & 0x80) |
da167876 | 334 | drive->dev_flags |= IDE_DFLAG_WP; |
49cac39e | 335 | else |
da167876 | 336 | drive->dev_flags &= ~IDE_DFLAG_WP; |
49cac39e | 337 | |
da167876 | 338 | set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP)); |
49cac39e | 339 | |
d9a68307 | 340 | page = &buf[8]; |
8e81bbba | 341 | |
d9a68307 BP |
342 | transfer_rate = be16_to_cpup((__be16 *)&buf[8 + 2]); |
343 | sector_size = be16_to_cpup((__be16 *)&buf[8 + 6]); | |
344 | cyls = be16_to_cpup((__be16 *)&buf[8 + 8]); | |
345 | rpm = be16_to_cpup((__be16 *)&buf[8 + 28]); | |
346 | heads = buf[8 + 4]; | |
347 | sectors = buf[8 + 5]; | |
8e81bbba BP |
348 | |
349 | capacity = cyls * heads * sectors * sector_size; | |
350 | ||
351 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
7b355726 | 352 | printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
1da177e4 | 353 | "%d sector size, %d rpm\n", |
8e81bbba BP |
354 | drive->name, capacity / 1024, cyls, heads, |
355 | sectors, transfer_rate / 8, sector_size, rpm); | |
356 | ||
357 | memcpy(&floppy->flexible_disk_page, page, 32); | |
358 | drive->bios_cyl = cyls; | |
359 | drive->bios_head = heads; | |
360 | drive->bios_sect = sectors; | |
1da177e4 | 361 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 362 | |
1da177e4 | 363 | if (capacity < lba_capacity) { |
7b355726 | 364 | printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d " |
1da177e4 LT |
365 | "bytes, but the drive only handles %d\n", |
366 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
367 | floppy->blocks = floppy->block_size ? |
368 | capacity / floppy->block_size : 0; | |
6f84083b | 369 | drive->capacity64 = floppy->blocks * floppy->bs_factor; |
1da177e4 | 370 | } |
6f84083b | 371 | |
1da177e4 LT |
372 | return 0; |
373 | } | |
374 | ||
1da177e4 | 375 | /* |
194ec0c0 BP |
376 | * Determine if a media is present in the floppy drive, and if so, its LBA |
377 | * capacity. | |
1da177e4 | 378 | */ |
806f80a6 | 379 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 | 380 | { |
0df96277 | 381 | struct ide_disk_obj *floppy = drive->driver_data; |
2ac07d92 | 382 | struct gendisk *disk = floppy->disk; |
8e555123 | 383 | struct ide_atapi_pc pc; |
194ec0c0 | 384 | u8 *cap_desc; |
41fa9f86 | 385 | u8 pc_buf[256], header_len, desc_cnt; |
194ec0c0 BP |
386 | int i, rc = 1, blocks, length; |
387 | ||
349d12a1 BZ |
388 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
389 | ||
1da177e4 LT |
390 | drive->bios_cyl = 0; |
391 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
392 | floppy->blocks = 0; |
393 | floppy->bs_factor = 1; | |
6f84083b | 394 | drive->capacity64 = 0; |
1da177e4 | 395 | |
0127854d | 396 | ide_floppy_create_read_capacity_cmd(&pc); |
b13345f3 | 397 | if (ide_queue_pc_tail(drive, disk, &pc, pc_buf, pc.req_xfer)) { |
7b355726 | 398 | printk(KERN_ERR PFX "Can't get floppy parameters\n"); |
1da177e4 LT |
399 | return 1; |
400 | } | |
b13345f3 BP |
401 | header_len = pc_buf[3]; |
402 | cap_desc = &pc_buf[4]; | |
194ec0c0 BP |
403 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
404 | ||
405 | for (i = 0; i < desc_cnt; i++) { | |
406 | unsigned int desc_start = 4 + i*8; | |
407 | ||
b13345f3 BP |
408 | blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]); |
409 | length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]); | |
194ec0c0 | 410 | |
7b355726 | 411 | ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, " |
088b1b88 BP |
412 | "%d sector size", |
413 | i, blocks * length / 1024, | |
414 | blocks, length); | |
1da177e4 | 415 | |
194ec0c0 BP |
416 | if (i) |
417 | continue; | |
418 | /* | |
419 | * the code below is valid only for the 1st descriptor, ie i=0 | |
420 | */ | |
1da177e4 | 421 | |
b13345f3 | 422 | switch (pc_buf[desc_start + 4] & 0x03) { |
1da177e4 LT |
423 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
424 | case CAPACITY_UNFORMATTED: | |
ea68d270 | 425 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
0571c7a4 | 426 | /* |
1da177e4 LT |
427 | * If it is not a clik drive, break out |
428 | * (maintains previous driver behaviour) | |
429 | */ | |
430 | break; | |
df561f66 | 431 | fallthrough; |
1da177e4 LT |
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 | 471 | ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d", |
b13345f3 | 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 | 487 | drive->pc_callback = ide_floppy_callback; |
3ad6776c | 488 | |
1da177e4 | 489 | /* |
0571c7a4 BP |
490 | * We used to check revisions here. At this point however I'm giving up. |
491 | * Just assume they are all broken, its easier. | |
1da177e4 | 492 | * |
0571c7a4 BP |
493 | * The actual reason for the workarounds was likely a driver bug after |
494 | * all rather than a firmware bug, and the workaround below used to hide | |
495 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
496 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 497 | */ |
ca957b6a | 498 | if (strstarts((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI")) { |
ea68d270 | 499 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
1da177e4 | 500 | /* This value will be visible in the /proc/ide/hdx/settings */ |
baf08f0b | 501 | drive->pc_delay = IDEFLOPPY_PC_DELAY; |
086fa5ff | 502 | blk_queue_max_hw_sectors(drive->queue, 64); |
1da177e4 LT |
503 | } |
504 | ||
505 | /* | |
0571c7a4 BP |
506 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
507 | * nasty clicking noises without it, so please don't remove this. | |
508 | */ | |
ca957b6a | 509 | if (strstarts((char *)&id[ATA_ID_PROD], "IOMEGA Clik!")) { |
086fa5ff | 510 | blk_queue_max_hw_sectors(drive->queue, 64); |
ea68d270 | 511 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
0578042d | 512 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
42619d35 | 513 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
1da177e4 LT |
514 | } |
515 | ||
194ec0c0 | 516 | (void) ide_floppy_get_capacity(drive); |
1e874f44 BZ |
517 | |
518 | ide_proc_register_driver(drive, floppy->driver); | |
1da177e4 | 519 | } |
806f80a6 BZ |
520 | |
521 | static void ide_floppy_flush(ide_drive_t *drive) | |
522 | { | |
523 | } | |
524 | ||
525 | static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk) | |
526 | { | |
527 | int ret = 0; | |
528 | ||
529 | if (ide_do_test_unit_ready(drive, disk)) | |
530 | ide_do_start_stop(drive, disk, 1); | |
531 | ||
532 | ret = ide_floppy_get_capacity(drive); | |
533 | ||
534 | set_capacity(disk, ide_gd_capacity(drive)); | |
535 | ||
536 | return ret; | |
537 | } | |
538 | ||
539 | const struct ide_disk_ops ide_atapi_disk_ops = { | |
540 | .check = ide_check_atapi_device, | |
541 | .get_capacity = ide_floppy_get_capacity, | |
542 | .setup = ide_floppy_setup, | |
543 | .flush = ide_floppy_flush, | |
544 | .init_media = ide_floppy_init_media, | |
545 | .set_doorlock = ide_set_media_lock, | |
546 | .do_request = ide_floppy_do_request, | |
806f80a6 | 547 | .ioctl = ide_floppy_ioctl, |
c103d6ee AB |
548 | #ifdef CONFIG_COMPAT |
549 | .compat_ioctl = ide_floppy_compat_ioctl, | |
550 | #endif | |
806f80a6 | 551 | }; |