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Viewing changes to drivers/ide/ide-floppy.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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drivers/ide/ide-floppy.c
 
1
/*
 
2
 * IDE ATAPI floppy driver.
 
3
 *
 
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
 
7
 *
 
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
 *
 
14
 * For a historical changelog see
 
15
 * Documentation/ide/ChangeLog.ide-floppy.1996-2002
 
16
 */
 
17
 
 
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/cdrom.h>
 
29
#include <linux/ide.h>
 
30
#include <linux/hdreg.h>
 
31
#include <linux/bitops.h>
 
32
#include <linux/mutex.h>
 
33
#include <linux/scatterlist.h>
 
34
 
 
35
#include <scsi/scsi_ioctl.h>
 
36
 
 
37
#include <asm/byteorder.h>
 
38
#include <linux/uaccess.h>
 
39
#include <linux/io.h>
 
40
#include <asm/unaligned.h>
 
41
 
 
42
#include "ide-floppy.h"
 
43
 
 
44
/*
 
45
 * After each failed packet command we issue a request sense command and retry
 
46
 * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
 
47
 */
 
48
#define IDEFLOPPY_MAX_PC_RETRIES        3
 
49
 
 
50
/* format capacities descriptor codes */
 
51
#define CAPACITY_INVALID        0x00
 
52
#define CAPACITY_UNFORMATTED    0x01
 
53
#define CAPACITY_CURRENT        0x02
 
54
#define CAPACITY_NO_CARTRIDGE   0x03
 
55
 
 
56
/*
 
57
 * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit
 
58
 * was apparently being deasserted before the unit was ready to receive data.
 
59
 */
 
60
#define IDEFLOPPY_PC_DELAY      (HZ/20) /* default delay for ZIP 100 (50ms) */
 
61
 
 
62
static int ide_floppy_callback(ide_drive_t *drive, int dsc)
 
63
{
 
64
        struct ide_disk_obj *floppy = drive->driver_data;
 
65
        struct ide_atapi_pc *pc = drive->pc;
 
66
        struct request *rq = pc->rq;
 
67
        int uptodate = pc->error ? 0 : 1;
 
68
 
 
69
        ide_debug_log(IDE_DBG_FUNC, "enter");
 
70
 
 
71
        if (drive->failed_pc == pc)
 
72
                drive->failed_pc = NULL;
 
73
 
 
74
        if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
 
75
            rq->cmd_type == REQ_TYPE_BLOCK_PC)
 
76
                uptodate = 1; /* FIXME */
 
77
        else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
 
78
 
 
79
                u8 *buf = bio_data(rq->bio);
 
80
 
 
81
                if (!pc->error) {
 
82
                        floppy->sense_key = buf[2] & 0x0F;
 
83
                        floppy->asc = buf[12];
 
84
                        floppy->ascq = buf[13];
 
85
                        floppy->progress_indication = buf[15] & 0x80 ?
 
86
                                (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
 
87
 
 
88
                        if (drive->failed_pc)
 
89
                                ide_debug_log(IDE_DBG_PC, "pc = %x",
 
90
                                              drive->failed_pc->c[0]);
 
91
 
 
92
                        ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x,"
 
93
                                      "ascq = %x", floppy->sense_key,
 
94
                                      floppy->asc, floppy->ascq);
 
95
                } else
 
96
                        printk(KERN_ERR PFX "Error in REQUEST SENSE itself - "
 
97
                               "Aborting request!\n");
 
98
        }
 
99
 
 
100
        if (rq->cmd_type == REQ_TYPE_SPECIAL)
 
101
                rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL;
 
102
 
 
103
        return uptodate;
 
104
}
 
105
 
 
106
static void ide_floppy_report_error(struct ide_disk_obj *floppy,
 
107
                                    struct ide_atapi_pc *pc)
 
108
{
 
109
        /* suppress error messages resulting from Medium not present */
 
110
        if (floppy->sense_key == 0x02 &&
 
111
            floppy->asc       == 0x3a &&
 
112
            floppy->ascq      == 0x00)
 
113
                return;
 
114
 
 
115
        printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, "
 
116
                        "asc = %2x, ascq = %2x\n",
 
117
                        floppy->drive->name, pc->c[0], floppy->sense_key,
 
118
                        floppy->asc, floppy->ascq);
 
119
 
 
120
}
 
121
 
 
122
static ide_startstop_t ide_floppy_issue_pc(ide_drive_t *drive,
 
123
                                           struct ide_cmd *cmd,
 
124
                                           struct ide_atapi_pc *pc)
 
125
{
 
126
        struct ide_disk_obj *floppy = drive->driver_data;
 
127
 
 
128
        if (drive->failed_pc == NULL &&
 
129
            pc->c[0] != GPCMD_REQUEST_SENSE)
 
130
                drive->failed_pc = pc;
 
131
 
 
132
        /* Set the current packet command */
 
133
        drive->pc = pc;
 
134
 
 
135
        if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
 
136
                unsigned int done = blk_rq_bytes(drive->hwif->rq);
 
137
 
 
138
                if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
 
139
                        ide_floppy_report_error(floppy, pc);
 
140
 
 
141
                /* Giving up */
 
142
                pc->error = IDE_DRV_ERROR_GENERAL;
 
143
 
 
144
                drive->failed_pc = NULL;
 
145
                drive->pc_callback(drive, 0);
 
146
                ide_complete_rq(drive, -EIO, done);
 
147
                return ide_stopped;
 
148
        }
 
149
 
 
150
        ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries);
 
151
 
 
152
        pc->retries++;
 
153
 
 
154
        return ide_issue_pc(drive, cmd);
 
155
}
 
156
 
 
157
void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
 
158
{
 
159
        ide_init_pc(pc);
 
160
        pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
 
161
        pc->c[7] = 255;
 
162
        pc->c[8] = 255;
 
163
        pc->req_xfer = 255;
 
164
}
 
165
 
 
166
/* A mode sense command is used to "sense" floppy parameters. */
 
167
void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)
 
168
{
 
169
        u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
 
170
 
 
171
        ide_init_pc(pc);
 
172
        pc->c[0] = GPCMD_MODE_SENSE_10;
 
173
        pc->c[1] = 0;
 
174
        pc->c[2] = page_code;
 
175
 
 
176
        switch (page_code) {
 
177
        case IDEFLOPPY_CAPABILITIES_PAGE:
 
178
                length += 12;
 
179
                break;
 
180
        case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
 
181
                length += 32;
 
182
                break;
 
183
        default:
 
184
                printk(KERN_ERR PFX "unsupported page code in %s\n", __func__);
 
185
        }
 
186
        put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
 
187
        pc->req_xfer = length;
 
188
}
 
189
 
 
190
static void idefloppy_create_rw_cmd(ide_drive_t *drive,
 
191
                                    struct ide_atapi_pc *pc, struct request *rq,
 
192
                                    unsigned long sector)
 
193
{
 
194
        struct ide_disk_obj *floppy = drive->driver_data;
 
195
        int block = sector / floppy->bs_factor;
 
196
        int blocks = blk_rq_sectors(rq) / floppy->bs_factor;
 
197
        int cmd = rq_data_dir(rq);
 
198
 
 
199
        ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks);
 
200
 
 
201
        ide_init_pc(pc);
 
202
        pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
 
203
        put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
 
204
        put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
 
205
 
 
206
        memcpy(rq->cmd, pc->c, 12);
 
207
 
 
208
        pc->rq = rq;
 
209
        if (rq->cmd_flags & REQ_WRITE)
 
210
                pc->flags |= PC_FLAG_WRITING;
 
211
 
 
212
        pc->flags |= PC_FLAG_DMA_OK;
 
213
}
 
214
 
 
215
static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
 
216
                struct ide_atapi_pc *pc, struct request *rq)
 
217
{
 
218
        ide_init_pc(pc);
 
219
        memcpy(pc->c, rq->cmd, sizeof(pc->c));
 
220
        pc->rq = rq;
 
221
        if (blk_rq_bytes(rq)) {
 
222
                pc->flags |= PC_FLAG_DMA_OK;
 
223
                if (rq_data_dir(rq) == WRITE)
 
224
                        pc->flags |= PC_FLAG_WRITING;
 
225
        }
 
226
}
 
227
 
 
228
static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
 
229
                                             struct request *rq, sector_t block)
 
230
{
 
231
        struct ide_disk_obj *floppy = drive->driver_data;
 
232
        struct ide_cmd cmd;
 
233
        struct ide_atapi_pc *pc;
 
234
 
 
235
        ide_debug_log(IDE_DBG_FUNC, "enter, cmd: 0x%x\n", rq->cmd[0]);
 
236
 
 
237
        if (drive->debug_mask & IDE_DBG_RQ)
 
238
                blk_dump_rq_flags(rq, (rq->rq_disk
 
239
                                        ? rq->rq_disk->disk_name
 
240
                                        : "dev?"));
 
241
 
 
242
        if (rq->errors >= ERROR_MAX) {
 
243
                if (drive->failed_pc) {
 
244
                        ide_floppy_report_error(floppy, drive->failed_pc);
 
245
                        drive->failed_pc = NULL;
 
246
                } else
 
247
                        printk(KERN_ERR PFX "%s: I/O error\n", drive->name);
 
248
 
 
249
                if (rq->cmd_type == REQ_TYPE_SPECIAL) {
 
250
                        rq->errors = 0;
 
251
                        ide_complete_rq(drive, 0, blk_rq_bytes(rq));
 
252
                        return ide_stopped;
 
253
                } else
 
254
                        goto out_end;
 
255
        }
 
256
 
 
257
        switch (rq->cmd_type) {
 
258
        case REQ_TYPE_FS:
 
259
                if (((long)blk_rq_pos(rq) % floppy->bs_factor) ||
 
260
                    (blk_rq_sectors(rq) % floppy->bs_factor)) {
 
261
                        printk(KERN_ERR PFX "%s: unsupported r/w rq size\n",
 
262
                                drive->name);
 
263
                        goto out_end;
 
264
                }
 
265
                pc = &floppy->queued_pc;
 
266
                idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
 
267
                break;
 
268
        case REQ_TYPE_SPECIAL:
 
269
        case REQ_TYPE_SENSE:
 
270
                pc = (struct ide_atapi_pc *)rq->special;
 
271
                break;
 
272
        case REQ_TYPE_BLOCK_PC:
 
273
                pc = &floppy->queued_pc;
 
274
                idefloppy_blockpc_cmd(floppy, pc, rq);
 
275
                break;
 
276
        default:
 
277
                BUG();
 
278
        }
 
279
 
 
280
        ide_prep_sense(drive, rq);
 
281
 
 
282
        memset(&cmd, 0, sizeof(cmd));
 
283
 
 
284
        if (rq_data_dir(rq))
 
285
                cmd.tf_flags |= IDE_TFLAG_WRITE;
 
286
 
 
287
        cmd.rq = rq;
 
288
 
 
289
        if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) {
 
290
                ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
 
291
                ide_map_sg(drive, &cmd);
 
292
        }
 
293
 
 
294
        pc->rq = rq;
 
295
 
 
296
        return ide_floppy_issue_pc(drive, &cmd, pc);
 
297
out_end:
 
298
        drive->failed_pc = NULL;
 
299
        if (rq->cmd_type != REQ_TYPE_FS && rq->errors == 0)
 
300
                rq->errors = -EIO;
 
301
        ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
 
302
        return ide_stopped;
 
303
}
 
304
 
 
305
/*
 
306
 * Look at the flexible disk page parameters. We ignore the CHS capacity
 
307
 * parameters and use the LBA parameters instead.
 
308
 */
 
309
static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive,
 
310
                                             struct ide_atapi_pc *pc)
 
311
{
 
312
        struct ide_disk_obj *floppy = drive->driver_data;
 
313
        struct gendisk *disk = floppy->disk;
 
314
        u8 *page, buf[40];
 
315
        int capacity, lba_capacity;
 
316
        u16 transfer_rate, sector_size, cyls, rpm;
 
317
        u8 heads, sectors;
 
318
 
 
319
        ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
 
320
 
 
321
        if (ide_queue_pc_tail(drive, disk, pc, buf, pc->req_xfer)) {
 
322
                printk(KERN_ERR PFX "Can't get flexible disk page params\n");
 
323
                return 1;
 
324
        }
 
325
 
 
326
        if (buf[3] & 0x80)
 
327
                drive->dev_flags |= IDE_DFLAG_WP;
 
328
        else
 
329
                drive->dev_flags &= ~IDE_DFLAG_WP;
 
330
 
 
331
        set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP));
 
332
 
 
333
        page = &buf[8];
 
334
 
 
335
        transfer_rate = be16_to_cpup((__be16 *)&buf[8 + 2]);
 
336
        sector_size   = be16_to_cpup((__be16 *)&buf[8 + 6]);
 
337
        cyls          = be16_to_cpup((__be16 *)&buf[8 + 8]);
 
338
        rpm           = be16_to_cpup((__be16 *)&buf[8 + 28]);
 
339
        heads         = buf[8 + 4];
 
340
        sectors       = buf[8 + 5];
 
341
 
 
342
        capacity = cyls * heads * sectors * sector_size;
 
343
 
 
344
        if (memcmp(page, &floppy->flexible_disk_page, 32))
 
345
                printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, "
 
346
                                "%d sector size, %d rpm\n",
 
347
                                drive->name, capacity / 1024, cyls, heads,
 
348
                                sectors, transfer_rate / 8, sector_size, rpm);
 
349
 
 
350
        memcpy(&floppy->flexible_disk_page, page, 32);
 
351
        drive->bios_cyl = cyls;
 
352
        drive->bios_head = heads;
 
353
        drive->bios_sect = sectors;
 
354
        lba_capacity = floppy->blocks * floppy->block_size;
 
355
 
 
356
        if (capacity < lba_capacity) {
 
357
                printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d "
 
358
                        "bytes, but the drive only handles %d\n",
 
359
                        drive->name, lba_capacity, capacity);
 
360
                floppy->blocks = floppy->block_size ?
 
361
                        capacity / floppy->block_size : 0;
 
362
                drive->capacity64 = floppy->blocks * floppy->bs_factor;
 
363
        }
 
364
 
 
365
        return 0;
 
366
}
 
367
 
 
368
/*
 
369
 * Determine if a media is present in the floppy drive, and if so, its LBA
 
370
 * capacity.
 
371
 */
 
372
static int ide_floppy_get_capacity(ide_drive_t *drive)
 
373
{
 
374
        struct ide_disk_obj *floppy = drive->driver_data;
 
375
        struct gendisk *disk = floppy->disk;
 
376
        struct ide_atapi_pc pc;
 
377
        u8 *cap_desc;
 
378
        u8 pc_buf[256], header_len, desc_cnt;
 
379
        int i, rc = 1, blocks, length;
 
380
 
 
381
        ide_debug_log(IDE_DBG_FUNC, "enter");
 
382
 
 
383
        drive->bios_cyl = 0;
 
384
        drive->bios_head = drive->bios_sect = 0;
 
385
        floppy->blocks = 0;
 
386
        floppy->bs_factor = 1;
 
387
        drive->capacity64 = 0;
 
388
 
 
389
        ide_floppy_create_read_capacity_cmd(&pc);
 
390
        if (ide_queue_pc_tail(drive, disk, &pc, pc_buf, pc.req_xfer)) {
 
391
                printk(KERN_ERR PFX "Can't get floppy parameters\n");
 
392
                return 1;
 
393
        }
 
394
        header_len = pc_buf[3];
 
395
        cap_desc = &pc_buf[4];
 
396
        desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
 
397
 
 
398
        for (i = 0; i < desc_cnt; i++) {
 
399
                unsigned int desc_start = 4 + i*8;
 
400
 
 
401
                blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
 
402
                length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);
 
403
 
 
404
                ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, "
 
405
                                             "%d sector size",
 
406
                                             i, blocks * length / 1024,
 
407
                                             blocks, length);
 
408
 
 
409
                if (i)
 
410
                        continue;
 
411
                /*
 
412
                 * the code below is valid only for the 1st descriptor, ie i=0
 
413
                 */
 
414
 
 
415
                switch (pc_buf[desc_start + 4] & 0x03) {
 
416
                /* Clik! drive returns this instead of CAPACITY_CURRENT */
 
417
                case CAPACITY_UNFORMATTED:
 
418
                        if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
 
419
                                /*
 
420
                                 * If it is not a clik drive, break out
 
421
                                 * (maintains previous driver behaviour)
 
422
                                 */
 
423
                                break;
 
424
                case CAPACITY_CURRENT:
 
425
                        /* Normal Zip/LS-120 disks */
 
426
                        if (memcmp(cap_desc, &floppy->cap_desc, 8))
 
427
                                printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d "
 
428
                                       "sector size\n",
 
429
                                       drive->name, blocks * length / 1024,
 
430
                                       blocks, length);
 
431
                        memcpy(&floppy->cap_desc, cap_desc, 8);
 
432
 
 
433
                        if (!length || length % 512) {
 
434
                                printk(KERN_NOTICE PFX "%s: %d bytes block size"
 
435
                                       " not supported\n", drive->name, length);
 
436
                        } else {
 
437
                                floppy->blocks = blocks;
 
438
                                floppy->block_size = length;
 
439
                                floppy->bs_factor = length / 512;
 
440
                                if (floppy->bs_factor != 1)
 
441
                                        printk(KERN_NOTICE PFX "%s: Warning: "
 
442
                                               "non 512 bytes block size not "
 
443
                                               "fully supported\n",
 
444
                                               drive->name);
 
445
                                drive->capacity64 =
 
446
                                        floppy->blocks * floppy->bs_factor;
 
447
                                rc = 0;
 
448
                        }
 
449
                        break;
 
450
                case CAPACITY_NO_CARTRIDGE:
 
451
                        /*
 
452
                         * This is a KERN_ERR so it appears on screen
 
453
                         * for the user to see
 
454
                         */
 
455
                        printk(KERN_ERR PFX "%s: No disk in drive\n",
 
456
                               drive->name);
 
457
                        break;
 
458
                case CAPACITY_INVALID:
 
459
                        printk(KERN_ERR PFX "%s: Invalid capacity for disk "
 
460
                                "in drive\n", drive->name);
 
461
                        break;
 
462
                }
 
463
                ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d",
 
464
                                             pc_buf[desc_start + 4] & 0x03);
 
465
        }
 
466
 
 
467
        /* Clik! disk does not support get_flexible_disk_page */
 
468
        if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
 
469
                (void) ide_floppy_get_flexible_disk_page(drive, &pc);
 
470
 
 
471
        return rc;
 
472
}
 
473
 
 
474
static void ide_floppy_setup(ide_drive_t *drive)
 
475
{
 
476
        struct ide_disk_obj *floppy = drive->driver_data;
 
477
        u16 *id = drive->id;
 
478
 
 
479
        drive->pc_callback       = ide_floppy_callback;
 
480
 
 
481
        /*
 
482
         * We used to check revisions here. At this point however I'm giving up.
 
483
         * Just assume they are all broken, its easier.
 
484
         *
 
485
         * The actual reason for the workarounds was likely a driver bug after
 
486
         * all rather than a firmware bug, and the workaround below used to hide
 
487
         * it. It should be fixed as of version 1.9, but to be on the safe side
 
488
         * we'll leave the limitation below for the 2.2.x tree.
 
489
         */
 
490
        if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) {
 
491
                drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
 
492
                /* This value will be visible in the /proc/ide/hdx/settings */
 
493
                drive->pc_delay = IDEFLOPPY_PC_DELAY;
 
494
                blk_queue_max_hw_sectors(drive->queue, 64);
 
495
        }
 
496
 
 
497
        /*
 
498
         * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
 
499
         * nasty clicking noises without it, so please don't remove this.
 
500
         */
 
501
        if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) {
 
502
                blk_queue_max_hw_sectors(drive->queue, 64);
 
503
                drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
 
504
                /* IOMEGA Clik! drives do not support lock/unlock commands */
 
505
                drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
 
506
        }
 
507
 
 
508
        (void) ide_floppy_get_capacity(drive);
 
509
 
 
510
        ide_proc_register_driver(drive, floppy->driver);
 
511
 
 
512
        drive->dev_flags |= IDE_DFLAG_ATTACH;
 
513
}
 
514
 
 
515
static void ide_floppy_flush(ide_drive_t *drive)
 
516
{
 
517
}
 
518
 
 
519
static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk)
 
520
{
 
521
        int ret = 0;
 
522
 
 
523
        if (ide_do_test_unit_ready(drive, disk))
 
524
                ide_do_start_stop(drive, disk, 1);
 
525
 
 
526
        ret = ide_floppy_get_capacity(drive);
 
527
 
 
528
        set_capacity(disk, ide_gd_capacity(drive));
 
529
 
 
530
        return ret;
 
531
}
 
532
 
 
533
const struct ide_disk_ops ide_atapi_disk_ops = {
 
534
        .check          = ide_check_atapi_device,
 
535
        .get_capacity   = ide_floppy_get_capacity,
 
536
        .setup          = ide_floppy_setup,
 
537
        .flush          = ide_floppy_flush,
 
538
        .init_media     = ide_floppy_init_media,
 
539
        .set_doorlock   = ide_set_media_lock,
 
540
        .do_request     = ide_floppy_do_request,
 
541
        .ioctl          = ide_floppy_ioctl,
 
542
};