2 * IDE ATAPI floppy driver.
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
8 * This driver supports the following IDE floppy drives:
10 * LS-120/240 SuperDisk
12 * Iomega PC Card Clik!/PocketZip
14 * For a historical changelog see
15 * Documentation/ide/ChangeLog.ide-floppy.1996-2002
18 #define IDEFLOPPY_VERSION "1.00"
20 #include <linux/module.h>
21 #include <linux/types.h>
22 #include <linux/string.h>
23 #include <linux/kernel.h>
24 #include <linux/delay.h>
25 #include <linux/timer.h>
27 #include <linux/interrupt.h>
28 #include <linux/major.h>
29 #include <linux/errno.h>
30 #include <linux/genhd.h>
31 #include <linux/slab.h>
32 #include <linux/cdrom.h>
33 #include <linux/ide.h>
34 #include <linux/bitops.h>
35 #include <linux/mutex.h>
37 #include <scsi/scsi_ioctl.h>
39 #include <asm/byteorder.h>
40 #include <linux/irq.h>
41 #include <linux/uaccess.h>
43 #include <asm/unaligned.h>
45 /* define to see debug info */
46 #define IDEFLOPPY_DEBUG_LOG 0
48 /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
49 #define IDEFLOPPY_DEBUG(fmt, args...)
51 #if IDEFLOPPY_DEBUG_LOG
52 #define debug_log(fmt, args...) \
53 printk(KERN_INFO "ide-floppy: " fmt, ## args)
55 #define debug_log(fmt, args...) do {} while (0)
59 /* Some drives require a longer irq timeout. */
60 #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
63 * After each failed packet command we issue a request sense command and retry
64 * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
66 #define IDEFLOPPY_MAX_PC_RETRIES 3
69 * With each packet command, we allocate a buffer of IDEFLOPPY_PC_BUFFER_SIZE
72 #define IDEFLOPPY_PC_BUFFER_SIZE 256
75 * In various places in the driver, we need to allocate storage for packet
76 * commands and requests, which will remain valid while we leave the driver to
77 * wait for an interrupt or a timeout event.
79 #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
81 /* format capacities descriptor codes */
82 #define CAPACITY_INVALID 0x00
83 #define CAPACITY_UNFORMATTED 0x01
84 #define CAPACITY_CURRENT 0x02
85 #define CAPACITY_NO_CARTRIDGE 0x03
88 * Most of our global data which we need to save even as we leave the driver
89 * due to an interrupt or a timer event is stored in a variable of type
90 * idefloppy_floppy_t, defined below.
92 typedef struct ide_floppy_obj {
97 unsigned int openers; /* protected by BKL for now */
99 /* Current packet command */
100 struct ide_atapi_pc *pc;
101 /* Last failed packet command */
102 struct ide_atapi_pc *failed_pc;
103 /* Packet command stack */
104 struct ide_atapi_pc pc_stack[IDEFLOPPY_PC_STACK];
105 /* Next free packet command storage space */
107 struct request rq_stack[IDEFLOPPY_PC_STACK];
108 /* We implement a circular array */
111 /* Last error information */
112 u8 sense_key, asc, ascq;
113 /* delay this long before sending packet command */
115 int progress_indication;
117 /* Device information */
119 int blocks, block_size, bs_factor;
120 /* Last format capacity descriptor */
122 /* Copy of the flexible disk page */
123 u8 flexible_disk_page[32];
126 /* Supports format progress report */
128 /* Status/Action flags */
130 } idefloppy_floppy_t;
132 #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
134 /* Floppy flag bits values. */
136 /* DRQ interrupt device */
137 IDEFLOPPY_FLAG_DRQ_INTERRUPT = (1 << 0),
138 /* Media may have changed */
139 IDEFLOPPY_FLAG_MEDIA_CHANGED = (1 << 1),
140 /* Format in progress */
141 IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS = (1 << 2),
142 /* Avoid commands not supported in Clik drive */
143 IDEFLOPPY_FLAG_CLIK_DRIVE = (1 << 3),
144 /* Requires BH algorithm for packets */
145 IDEFLOPPY_FLAG_ZIP_DRIVE = (1 << 4),
148 /* Defines for the MODE SENSE command */
149 #define MODE_SENSE_CURRENT 0x00
150 #define MODE_SENSE_CHANGEABLE 0x01
151 #define MODE_SENSE_DEFAULT 0x02
152 #define MODE_SENSE_SAVED 0x03
154 /* IOCTLs used in low-level formatting. */
155 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
156 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
157 #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
158 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
160 /* Error code returned in rq->errors to the higher part of the driver. */
161 #define IDEFLOPPY_ERROR_GENERAL 101
164 * Pages of the SELECT SENSE / MODE SENSE packet commands.
165 * See SFF-8070i spec.
167 #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
168 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
170 static DEFINE_MUTEX(idefloppy_ref_mutex);
172 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
174 #define ide_floppy_g(disk) \
175 container_of((disk)->private_data, struct ide_floppy_obj, driver)
177 static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk)
179 struct ide_floppy_obj *floppy = NULL;
181 mutex_lock(&idefloppy_ref_mutex);
182 floppy = ide_floppy_g(disk);
184 kref_get(&floppy->kref);
185 mutex_unlock(&idefloppy_ref_mutex);
189 static void idefloppy_cleanup_obj(struct kref *);
191 static void ide_floppy_put(struct ide_floppy_obj *floppy)
193 mutex_lock(&idefloppy_ref_mutex);
194 kref_put(&floppy->kref, idefloppy_cleanup_obj);
195 mutex_unlock(&idefloppy_ref_mutex);
199 * Used to finish servicing a request. For read/write requests, we will call
200 * ide_end_request to pass to the next buffer.
202 static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs)
204 idefloppy_floppy_t *floppy = drive->driver_data;
205 struct request *rq = HWGROUP(drive)->rq;
208 debug_log("Reached %s\n", __func__);
211 case 0: error = IDEFLOPPY_ERROR_GENERAL; break;
212 case 1: error = 0; break;
213 default: error = uptodate;
216 floppy->failed_pc = NULL;
217 /* Why does this happen? */
220 if (!blk_special_request(rq)) {
221 /* our real local end request function */
222 ide_end_request(drive, uptodate, nsecs);
226 /* fixme: need to move this local also */
227 ide_end_drive_cmd(drive, 0, 0);
231 static void ide_floppy_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
232 unsigned int bcount, int direction)
234 ide_hwif_t *hwif = drive->hwif;
235 struct request *rq = pc->rq;
236 struct req_iterator iter;
237 struct bio_vec *bvec;
242 rq_for_each_segment(bvec, rq, iter) {
246 count = min(bvec->bv_len, bcount);
248 data = bvec_kmap_irq(bvec, &flags);
250 hwif->output_data(drive, NULL, data, count);
252 hwif->input_data(drive, NULL, data, count);
253 bvec_kunmap_irq(data, &flags);
256 pc->b_count += count;
260 idefloppy_end_request(drive, 1, done >> 9);
263 printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n",
264 drive->name, __func__, bcount);
265 ide_pad_transfer(drive, direction, bcount);
269 static void idefloppy_update_buffers(ide_drive_t *drive,
270 struct ide_atapi_pc *pc)
272 struct request *rq = pc->rq;
273 struct bio *bio = rq->bio;
275 while ((bio = rq->bio) != NULL)
276 idefloppy_end_request(drive, 1, 0);
280 * Generate a new packet command request in front of the request queue, before
281 * the current request so that it will be processed immediately, on the next
282 * pass through the driver.
284 static void idefloppy_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc,
287 struct ide_floppy_obj *floppy = drive->driver_data;
289 blk_rq_init(NULL, rq);
290 rq->buffer = (char *) pc;
291 rq->cmd_type = REQ_TYPE_SPECIAL;
292 rq->cmd_flags |= REQ_PREEMPT;
293 rq->rq_disk = floppy->disk;
294 ide_do_drive_cmd(drive, rq);
297 static struct ide_atapi_pc *idefloppy_next_pc_storage(ide_drive_t *drive)
299 idefloppy_floppy_t *floppy = drive->driver_data;
301 if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK)
302 floppy->pc_stack_index = 0;
303 return (&floppy->pc_stack[floppy->pc_stack_index++]);
306 static struct request *idefloppy_next_rq_storage(ide_drive_t *drive)
308 idefloppy_floppy_t *floppy = drive->driver_data;
310 if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK)
311 floppy->rq_stack_index = 0;
312 return (&floppy->rq_stack[floppy->rq_stack_index++]);
315 static void ide_floppy_callback(ide_drive_t *drive)
317 idefloppy_floppy_t *floppy = drive->driver_data;
318 struct ide_atapi_pc *pc = floppy->pc;
319 int uptodate = pc->error ? 0 : 1;
321 debug_log("Reached %s\n", __func__);
323 if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
324 (pc->rq && blk_pc_request(pc->rq)))
325 uptodate = 1; /* FIXME */
326 else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
327 u8 *buf = floppy->pc->buf;
330 floppy->sense_key = buf[2] & 0x0F;
331 floppy->asc = buf[12];
332 floppy->ascq = buf[13];
333 floppy->progress_indication = buf[15] & 0x80 ?
334 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
336 if (floppy->failed_pc)
337 debug_log("pc = %x, ", floppy->failed_pc->c[0]);
339 debug_log("sense key = %x, asc = %x, ascq = %x\n",
340 floppy->sense_key, floppy->asc, floppy->ascq);
342 printk(KERN_ERR "Error in REQUEST SENSE itself - "
343 "Aborting request!\n");
346 idefloppy_end_request(drive, uptodate, 0);
349 static void idefloppy_init_pc(struct ide_atapi_pc *pc)
351 memset(pc->c, 0, 12);
355 pc->buf = pc->pc_buf;
356 pc->buf_size = IDEFLOPPY_PC_BUFFER_SIZE;
357 pc->idefloppy_callback = &ide_floppy_callback;
360 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc)
362 idefloppy_init_pc(pc);
363 pc->c[0] = GPCMD_REQUEST_SENSE;
369 * Called when an error was detected during the last packet command. We queue a
370 * request sense packet command in the head of the request list.
372 static void idefloppy_retry_pc(ide_drive_t *drive)
374 struct ide_atapi_pc *pc;
377 (void)ide_read_error(drive);
378 pc = idefloppy_next_pc_storage(drive);
379 rq = idefloppy_next_rq_storage(drive);
380 idefloppy_create_request_sense_cmd(pc);
381 idefloppy_queue_pc_head(drive, pc, rq);
384 /* The usual interrupt handler called during a packet command. */
385 static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive)
387 idefloppy_floppy_t *floppy = drive->driver_data;
388 ide_hwif_t *hwif = drive->hwif;
389 struct ide_atapi_pc *pc = floppy->pc;
390 struct request *rq = pc->rq;
391 xfer_func_t *xferfunc;
397 debug_log("Reached %s interrupt handler\n", __func__);
399 if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
400 dma_error = hwif->dma_ops->dma_end(drive);
402 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
403 rq_data_dir(rq) ? "write" : "read");
404 pc->flags |= PC_FLAG_DMA_ERROR;
406 pc->xferred = pc->req_xfer;
407 idefloppy_update_buffers(drive, pc);
409 debug_log("DMA finished\n");
412 /* Clear the interrupt */
413 stat = ide_read_status(drive);
415 /* No more interrupts */
416 if ((stat & DRQ_STAT) == 0) {
417 debug_log("Packet command completed, %d bytes transferred\n",
419 pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
421 local_irq_enable_in_hardirq();
423 if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) {
425 debug_log("%s: I/O error\n", drive->name);
427 if (pc->c[0] == GPCMD_REQUEST_SENSE) {
428 printk(KERN_ERR "%s: I/O error in request sense"
429 " command\n", drive->name);
430 return ide_do_reset(drive);
432 /* Retry operation */
433 idefloppy_retry_pc(drive);
434 /* queued, but not started */
438 if (floppy->failed_pc == pc)
439 floppy->failed_pc = NULL;
440 /* Command finished - Call the callback function */
441 pc->idefloppy_callback(drive);
445 if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
446 pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
447 printk(KERN_ERR "%s: The device wants to issue more interrupts "
448 "in DMA mode\n", drive->name);
450 return ide_do_reset(drive);
453 /* Get the number of bytes to transfer */
454 bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) |
455 hwif->INB(hwif->io_ports.lbam_addr);
456 /* on this interrupt */
457 ireason = hwif->INB(hwif->io_ports.nsect_addr);
460 printk(KERN_ERR "%s: CoD != 0 in %s\n", drive->name, __func__);
461 return ide_do_reset(drive);
463 if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) {
464 /* Hopefully, we will never get here */
465 printk(KERN_ERR "%s: We wanted to %s, but the device wants us "
466 "to %s!\n", drive->name,
467 (ireason & IO) ? "Write" : "Read",
468 (ireason & IO) ? "Read" : "Write");
469 return ide_do_reset(drive);
471 if (!(pc->flags & PC_FLAG_WRITING)) {
472 /* Reading - Check that we have enough space */
473 temp = pc->xferred + bcount;
474 if (temp > pc->req_xfer) {
475 if (temp > pc->buf_size) {
476 printk(KERN_ERR "%s: The device wants to send "
477 "us more data than expected - "
480 ide_pad_transfer(drive, 0, bcount);
482 ide_set_handler(drive,
488 debug_log("The device wants to send us more data than "
489 "expected - allowing transfer\n");
492 if (pc->flags & PC_FLAG_WRITING)
493 xferfunc = hwif->output_data;
495 xferfunc = hwif->input_data;
498 xferfunc(drive, NULL, pc->cur_pos, bcount);
500 ide_floppy_io_buffers(drive, pc, bcount,
501 !!(pc->flags & PC_FLAG_WRITING));
503 /* Update the current position */
504 pc->xferred += bcount;
505 pc->cur_pos += bcount;
507 /* And set the interrupt handler again */
508 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
513 * What we have here is a classic case of a top half / bottom half interrupt
514 * service routine. In interrupt mode, the device sends an interrupt to signal
515 * that it is ready to receive a packet. However, we need to delay about 2-3
516 * ticks before issuing the packet or we gets in trouble.
518 * So, follow carefully. transfer_pc1 is called as an interrupt (or directly).
519 * In either case, when the device says it's ready for a packet, we schedule
520 * the packet transfer to occur about 2-3 ticks later in transfer_pc2.
522 static int idefloppy_transfer_pc2(ide_drive_t *drive)
524 idefloppy_floppy_t *floppy = drive->driver_data;
526 /* Send the actual packet */
527 drive->hwif->output_data(drive, NULL, floppy->pc->c, 12);
529 /* Timeout for the packet command */
530 return IDEFLOPPY_WAIT_CMD;
533 static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive)
535 ide_hwif_t *hwif = drive->hwif;
536 idefloppy_floppy_t *floppy = drive->driver_data;
537 ide_expiry_t *expiry;
538 unsigned int timeout;
539 ide_startstop_t startstop;
542 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
543 printk(KERN_ERR "%s: Strange, packet command initiated yet "
544 "DRQ isn't asserted\n", drive->name);
547 ireason = hwif->INB(hwif->io_ports.nsect_addr);
548 if ((ireason & CD) == 0 || (ireason & IO)) {
549 printk(KERN_ERR "%s: (IO,CoD) != (0,1) while issuing "
550 "a packet command\n", drive->name);
551 return ide_do_reset(drive);
554 * The following delay solves a problem with ATAPI Zip 100 drives
555 * where the Busy flag was apparently being deasserted before the
556 * unit was ready to receive data. This was happening on a
557 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
558 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
559 * used until after the packet is moved in about 50 msec.
561 if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) {
562 timeout = floppy->ticks;
563 expiry = &idefloppy_transfer_pc2;
565 timeout = IDEFLOPPY_WAIT_CMD;
569 ide_set_handler(drive, &idefloppy_pc_intr, timeout, expiry);
571 if ((floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) == 0)
572 /* Send the actual packet */
573 hwif->output_data(drive, NULL, floppy->pc->c, 12);
578 static void ide_floppy_report_error(idefloppy_floppy_t *floppy,
579 struct ide_atapi_pc *pc)
581 /* supress error messages resulting from Medium not present */
582 if (floppy->sense_key == 0x02 &&
583 floppy->asc == 0x3a &&
584 floppy->ascq == 0x00)
587 printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
588 "asc = %2x, ascq = %2x\n",
589 floppy->drive->name, pc->c[0], floppy->sense_key,
590 floppy->asc, floppy->ascq);
594 static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
595 struct ide_atapi_pc *pc)
597 idefloppy_floppy_t *floppy = drive->driver_data;
598 ide_hwif_t *hwif = drive->hwif;
602 if (floppy->failed_pc == NULL &&
603 pc->c[0] != GPCMD_REQUEST_SENSE)
604 floppy->failed_pc = pc;
605 /* Set the current packet command */
608 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
609 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
610 ide_floppy_report_error(floppy, pc);
612 pc->error = IDEFLOPPY_ERROR_GENERAL;
614 floppy->failed_pc = NULL;
615 pc->idefloppy_callback(drive);
619 debug_log("Retry number - %d\n", pc->retries);
622 /* We haven't transferred any data yet */
624 pc->cur_pos = pc->buf;
625 bcount = min(pc->req_xfer, 63 * 1024);
627 if (pc->flags & PC_FLAG_DMA_ERROR) {
628 pc->flags &= ~PC_FLAG_DMA_ERROR;
633 if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma)
634 dma = !hwif->dma_ops->dma_setup(drive);
636 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_DEVICE, bcount, dma);
639 /* Begin DMA, if necessary */
640 pc->flags |= PC_FLAG_DMA_IN_PROGRESS;
641 hwif->dma_ops->dma_start(drive);
644 if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) {
645 /* Issue the packet command */
646 ide_execute_command(drive, WIN_PACKETCMD,
647 &idefloppy_transfer_pc1,
652 /* Issue the packet command */
653 ide_execute_pkt_cmd(drive);
654 return idefloppy_transfer_pc1(drive);
658 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent)
660 debug_log("creating prevent removal command, prevent = %d\n", prevent);
662 idefloppy_init_pc(pc);
663 pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
667 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
669 idefloppy_init_pc(pc);
670 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
676 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b,
679 idefloppy_init_pc(pc);
680 pc->c[0] = GPCMD_FORMAT_UNIT;
683 memset(pc->buf, 0, 12);
685 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
687 if (flags & 1) /* Verify bit on... */
688 pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */
691 put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4]));
692 put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8]));
694 pc->flags |= PC_FLAG_WRITING;
697 /* A mode sense command is used to "sense" floppy parameters. */
698 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc,
699 u8 page_code, u8 type)
701 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
703 idefloppy_init_pc(pc);
704 pc->c[0] = GPCMD_MODE_SENSE_10;
706 pc->c[2] = page_code + (type << 6);
709 case IDEFLOPPY_CAPABILITIES_PAGE:
712 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
716 printk(KERN_ERR "ide-floppy: unsupported page code "
717 "in create_mode_sense_cmd\n");
719 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
720 pc->req_xfer = length;
723 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start)
725 idefloppy_init_pc(pc);
726 pc->c[0] = GPCMD_START_STOP_UNIT;
730 static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc *pc)
732 idefloppy_init_pc(pc);
733 pc->c[0] = GPCMD_TEST_UNIT_READY;
736 static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy,
737 struct ide_atapi_pc *pc, struct request *rq,
738 unsigned long sector)
740 int block = sector / floppy->bs_factor;
741 int blocks = rq->nr_sectors / floppy->bs_factor;
742 int cmd = rq_data_dir(rq);
744 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
747 idefloppy_init_pc(pc);
748 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
749 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
750 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
753 pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
754 if (rq->cmd_flags & REQ_RW)
755 pc->flags |= PC_FLAG_WRITING;
757 pc->req_xfer = pc->buf_size = blocks * floppy->block_size;
758 pc->flags |= PC_FLAG_DMA_RECOMMENDED;
761 static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
762 struct ide_atapi_pc *pc, struct request *rq)
764 idefloppy_init_pc(pc);
765 memcpy(pc->c, rq->cmd, sizeof(pc->c));
767 pc->b_count = rq->data_len;
768 if (rq->data_len && rq_data_dir(rq) == WRITE)
769 pc->flags |= PC_FLAG_WRITING;
772 pc->flags |= PC_FLAG_DMA_RECOMMENDED;
774 * possibly problematic, doesn't look like ide-floppy correctly
775 * handled scattered requests if dma fails...
777 pc->req_xfer = pc->buf_size = rq->data_len;
780 static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
781 struct request *rq, sector_t block_s)
783 idefloppy_floppy_t *floppy = drive->driver_data;
784 struct ide_atapi_pc *pc;
785 unsigned long block = (unsigned long)block_s;
787 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
788 rq->rq_disk ? rq->rq_disk->disk_name : "?",
789 rq->cmd_type, rq->errors);
790 debug_log("sector: %ld, nr_sectors: %ld, "
791 "current_nr_sectors: %d\n", (long)rq->sector,
792 rq->nr_sectors, rq->current_nr_sectors);
794 if (rq->errors >= ERROR_MAX) {
795 if (floppy->failed_pc)
796 ide_floppy_report_error(floppy, floppy->failed_pc);
798 printk(KERN_ERR "ide-floppy: %s: I/O error\n",
800 idefloppy_end_request(drive, 0, 0);
803 if (blk_fs_request(rq)) {
804 if (((long)rq->sector % floppy->bs_factor) ||
805 (rq->nr_sectors % floppy->bs_factor)) {
806 printk(KERN_ERR "%s: unsupported r/w request size\n",
808 idefloppy_end_request(drive, 0, 0);
811 pc = idefloppy_next_pc_storage(drive);
812 idefloppy_create_rw_cmd(floppy, pc, rq, block);
813 } else if (blk_special_request(rq)) {
814 pc = (struct ide_atapi_pc *) rq->buffer;
815 } else if (blk_pc_request(rq)) {
816 pc = idefloppy_next_pc_storage(drive);
817 idefloppy_blockpc_cmd(floppy, pc, rq);
819 blk_dump_rq_flags(rq,
820 "ide-floppy: unsupported command in queue");
821 idefloppy_end_request(drive, 0, 0);
826 return idefloppy_issue_pc(drive, pc);
830 * Add a special packet command request to the tail of the request queue,
831 * and wait for it to be serviced.
833 static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc)
835 struct ide_floppy_obj *floppy = drive->driver_data;
839 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
840 rq->buffer = (char *) pc;
841 rq->cmd_type = REQ_TYPE_SPECIAL;
842 error = blk_execute_rq(drive->queue, floppy->disk, rq, 0);
849 * Look at the flexible disk page parameters. We ignore the CHS capacity
850 * parameters and use the LBA parameters instead.
852 static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive)
854 idefloppy_floppy_t *floppy = drive->driver_data;
855 struct ide_atapi_pc pc;
857 int capacity, lba_capacity;
858 u16 transfer_rate, sector_size, cyls, rpm;
861 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE,
864 if (idefloppy_queue_pc_tail(drive, &pc)) {
865 printk(KERN_ERR "ide-floppy: Can't get flexible disk page"
869 floppy->wp = !!(pc.buf[3] & 0x80);
870 set_disk_ro(floppy->disk, floppy->wp);
873 transfer_rate = be16_to_cpu(*(u16 *)&pc.buf[8 + 2]);
874 sector_size = be16_to_cpu(*(u16 *)&pc.buf[8 + 6]);
875 cyls = be16_to_cpu(*(u16 *)&pc.buf[8 + 8]);
876 rpm = be16_to_cpu(*(u16 *)&pc.buf[8 + 28]);
877 heads = pc.buf[8 + 4];
878 sectors = pc.buf[8 + 5];
880 capacity = cyls * heads * sectors * sector_size;
882 if (memcmp(page, &floppy->flexible_disk_page, 32))
883 printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, "
884 "%d sector size, %d rpm\n",
885 drive->name, capacity / 1024, cyls, heads,
886 sectors, transfer_rate / 8, sector_size, rpm);
888 memcpy(&floppy->flexible_disk_page, page, 32);
889 drive->bios_cyl = cyls;
890 drive->bios_head = heads;
891 drive->bios_sect = sectors;
892 lba_capacity = floppy->blocks * floppy->block_size;
894 if (capacity < lba_capacity) {
895 printk(KERN_NOTICE "%s: The disk reports a capacity of %d "
896 "bytes, but the drive only handles %d\n",
897 drive->name, lba_capacity, capacity);
898 floppy->blocks = floppy->block_size ?
899 capacity / floppy->block_size : 0;
904 static int idefloppy_get_sfrp_bit(ide_drive_t *drive)
906 idefloppy_floppy_t *floppy = drive->driver_data;
907 struct ide_atapi_pc pc;
910 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE,
913 pc.flags |= PC_FLAG_SUPPRESS_ERROR;
914 if (idefloppy_queue_pc_tail(drive, &pc))
917 floppy->srfp = pc.buf[8 + 2] & 0x40;
922 * Determine if a media is present in the floppy drive, and if so, its LBA
925 static int ide_floppy_get_capacity(ide_drive_t *drive)
927 idefloppy_floppy_t *floppy = drive->driver_data;
928 struct ide_atapi_pc pc;
930 u8 header_len, desc_cnt;
931 int i, rc = 1, blocks, length;
934 drive->bios_head = drive->bios_sect = 0;
936 floppy->bs_factor = 1;
937 set_capacity(floppy->disk, 0);
939 idefloppy_create_read_capacity_cmd(&pc);
940 if (idefloppy_queue_pc_tail(drive, &pc)) {
941 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
944 header_len = pc.buf[3];
945 cap_desc = &pc.buf[4];
946 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
948 for (i = 0; i < desc_cnt; i++) {
949 unsigned int desc_start = 4 + i*8;
951 blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]);
952 length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]);
954 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
955 i, blocks * length / 1024, blocks, length);
960 * the code below is valid only for the 1st descriptor, ie i=0
963 switch (pc.buf[desc_start + 4] & 0x03) {
964 /* Clik! drive returns this instead of CAPACITY_CURRENT */
965 case CAPACITY_UNFORMATTED:
966 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
968 * If it is not a clik drive, break out
969 * (maintains previous driver behaviour)
972 case CAPACITY_CURRENT:
973 /* Normal Zip/LS-120 disks */
974 if (memcmp(cap_desc, &floppy->cap_desc, 8))
975 printk(KERN_INFO "%s: %dkB, %d blocks, %d "
976 "sector size\n", drive->name,
977 blocks * length / 1024, blocks, length);
978 memcpy(&floppy->cap_desc, cap_desc, 8);
980 if (!length || length % 512) {
981 printk(KERN_NOTICE "%s: %d bytes block size "
982 "not supported\n", drive->name, length);
984 floppy->blocks = blocks;
985 floppy->block_size = length;
986 floppy->bs_factor = length / 512;
987 if (floppy->bs_factor != 1)
988 printk(KERN_NOTICE "%s: warning: non "
989 "512 bytes block size not "
995 case CAPACITY_NO_CARTRIDGE:
997 * This is a KERN_ERR so it appears on screen
998 * for the user to see
1000 printk(KERN_ERR "%s: No disk in drive\n", drive->name);
1002 case CAPACITY_INVALID:
1003 printk(KERN_ERR "%s: Invalid capacity for disk "
1004 "in drive\n", drive->name);
1007 debug_log("Descriptor 0 Code: %d\n",
1008 pc.buf[desc_start + 4] & 0x03);
1011 /* Clik! disk does not support get_flexible_disk_page */
1012 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
1013 (void) ide_floppy_get_flexible_disk_page(drive);
1015 set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
1020 * Obtain the list of formattable capacities.
1021 * Very similar to ide_floppy_get_capacity, except that we push the capacity
1022 * descriptors to userland, instead of our own structures.
1024 * Userland gives us the following structure:
1026 * struct idefloppy_format_capacities {
1034 * userland initializes nformats to the number of allocated formats[] records.
1035 * On exit we set nformats to the number of records we've actually initialized.
1038 static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
1040 struct ide_atapi_pc pc;
1041 u8 header_len, desc_cnt;
1042 int i, blocks, length, u_array_size, u_index;
1045 if (get_user(u_array_size, arg))
1048 if (u_array_size <= 0)
1051 idefloppy_create_read_capacity_cmd(&pc);
1052 if (idefloppy_queue_pc_tail(drive, &pc)) {
1053 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1056 header_len = pc.buf[3];
1057 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
1063 * We always skip the first capacity descriptor. That's the current
1064 * capacity. We are interested in the remaining descriptors, the
1065 * formattable capacities.
1067 for (i = 1; i < desc_cnt; i++) {
1068 unsigned int desc_start = 4 + i*8;
1070 if (u_index >= u_array_size)
1071 break; /* User-supplied buffer too small */
1073 blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]);
1074 length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]);
1076 if (put_user(blocks, argp))
1080 if (put_user(length, argp))
1087 if (put_user(u_index, arg))
1093 * Get ATAPI_FORMAT_UNIT progress indication.
1095 * Userland gives a pointer to an int. The int is set to a progress
1096 * indicator 0-65536, with 65536=100%.
1098 * If the drive does not support format progress indication, we just check
1099 * the dsc bit, and return either 0 or 65536.
1102 static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg)
1104 idefloppy_floppy_t *floppy = drive->driver_data;
1105 struct ide_atapi_pc pc;
1106 int progress_indication = 0x10000;
1109 idefloppy_create_request_sense_cmd(&pc);
1110 if (idefloppy_queue_pc_tail(drive, &pc))
1113 if (floppy->sense_key == 2 &&
1116 progress_indication = floppy->progress_indication;
1118 /* Else assume format_unit has finished, and we're at 0x10000 */
1120 unsigned long flags;
1123 local_irq_save(flags);
1124 stat = ide_read_status(drive);
1125 local_irq_restore(flags);
1127 progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000;
1129 if (put_user(progress_indication, arg))
1135 static sector_t idefloppy_capacity(ide_drive_t *drive)
1137 idefloppy_floppy_t *floppy = drive->driver_data;
1138 unsigned long capacity = floppy->blocks * floppy->bs_factor;
1144 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
1147 static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id)
1150 u8 device_type, protocol, removable, drq_type, packet_size;
1152 *((u16 *) &gcw) = id->config;
1154 device_type = gcw[1] & 0x1F;
1155 removable = (gcw[0] & 0x80) >> 7;
1156 protocol = (gcw[1] & 0xC0) >> 6;
1157 drq_type = (gcw[0] & 0x60) >> 5;
1158 packet_size = gcw[0] & 0x03;
1161 /* kludge for Apple PowerBook internal zip */
1162 if (device_type == 5 &&
1163 !strstr(id->model, "CD-ROM") && strstr(id->model, "ZIP"))
1168 printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1170 else if (device_type != 0)
1171 printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set "
1172 "to floppy\n", device_type);
1173 else if (!removable)
1174 printk(KERN_ERR "ide-floppy: The removable flag is not set\n");
1175 else if (drq_type == 3)
1176 printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not "
1177 "supported\n", drq_type);
1178 else if (packet_size != 0)
1179 printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 "
1180 "bytes\n", packet_size);
1186 #ifdef CONFIG_IDE_PROC_FS
1187 static void idefloppy_add_settings(ide_drive_t *drive)
1189 idefloppy_floppy_t *floppy = drive->driver_data;
1191 ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1,
1192 &drive->bios_cyl, NULL);
1193 ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
1194 &drive->bios_head, NULL);
1195 ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1,
1196 &drive->bios_sect, NULL);
1197 ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
1198 &floppy->ticks, NULL);
1201 static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
1204 static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
1208 *((u16 *) &gcw) = drive->id->config;
1209 floppy->pc = floppy->pc_stack;
1211 if (((gcw[0] & 0x60) >> 5) == 1)
1212 floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT;
1214 * We used to check revisions here. At this point however I'm giving up.
1215 * Just assume they are all broken, its easier.
1217 * The actual reason for the workarounds was likely a driver bug after
1218 * all rather than a firmware bug, and the workaround below used to hide
1219 * it. It should be fixed as of version 1.9, but to be on the safe side
1220 * we'll leave the limitation below for the 2.2.x tree.
1222 if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
1223 floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE;
1224 /* This value will be visible in the /proc/ide/hdx/settings */
1225 floppy->ticks = IDEFLOPPY_TICKS_DELAY;
1226 blk_queue_max_sectors(drive->queue, 64);
1230 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1231 * nasty clicking noises without it, so please don't remove this.
1233 if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
1234 blk_queue_max_sectors(drive->queue, 64);
1235 floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE;
1238 (void) ide_floppy_get_capacity(drive);
1239 idefloppy_add_settings(drive);
1242 static void ide_floppy_remove(ide_drive_t *drive)
1244 idefloppy_floppy_t *floppy = drive->driver_data;
1245 struct gendisk *g = floppy->disk;
1247 ide_proc_unregister_driver(drive, floppy->driver);
1251 ide_floppy_put(floppy);
1254 static void idefloppy_cleanup_obj(struct kref *kref)
1256 struct ide_floppy_obj *floppy = to_ide_floppy(kref);
1257 ide_drive_t *drive = floppy->drive;
1258 struct gendisk *g = floppy->disk;
1260 drive->driver_data = NULL;
1261 g->private_data = NULL;
1266 #ifdef CONFIG_IDE_PROC_FS
1267 static int proc_idefloppy_read_capacity(char *page, char **start, off_t off,
1268 int count, int *eof, void *data)
1270 ide_drive_t*drive = (ide_drive_t *)data;
1273 len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive));
1274 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1277 static ide_proc_entry_t idefloppy_proc[] = {
1278 { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL },
1279 { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
1280 { NULL, 0, NULL, NULL }
1282 #endif /* CONFIG_IDE_PROC_FS */
1284 static int ide_floppy_probe(ide_drive_t *);
1286 static ide_driver_t idefloppy_driver = {
1288 .owner = THIS_MODULE,
1289 .name = "ide-floppy",
1290 .bus = &ide_bus_type,
1292 .probe = ide_floppy_probe,
1293 .remove = ide_floppy_remove,
1294 .version = IDEFLOPPY_VERSION,
1295 .media = ide_floppy,
1296 .supports_dsc_overlap = 0,
1297 .do_request = idefloppy_do_request,
1298 .end_request = idefloppy_end_request,
1299 .error = __ide_error,
1300 .abort = __ide_abort,
1301 #ifdef CONFIG_IDE_PROC_FS
1302 .proc = idefloppy_proc,
1306 static int idefloppy_open(struct inode *inode, struct file *filp)
1308 struct gendisk *disk = inode->i_bdev->bd_disk;
1309 struct ide_floppy_obj *floppy;
1311 struct ide_atapi_pc pc;
1314 debug_log("Reached %s\n", __func__);
1316 floppy = ide_floppy_get(disk);
1320 drive = floppy->drive;
1324 if (floppy->openers == 1) {
1325 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1328 idefloppy_create_test_unit_ready_cmd(&pc);
1329 if (idefloppy_queue_pc_tail(drive, &pc)) {
1330 idefloppy_create_start_stop_cmd(&pc, 1);
1331 (void) idefloppy_queue_pc_tail(drive, &pc);
1334 if (ide_floppy_get_capacity(drive)
1335 && (filp->f_flags & O_NDELAY) == 0
1337 * Allow O_NDELAY to open a drive without a disk, or with an
1338 * unreadable disk, so that we can get the format capacity
1339 * of the drive or begin the format - Sam
1343 goto out_put_floppy;
1346 if (floppy->wp && (filp->f_mode & 2)) {
1348 goto out_put_floppy;
1350 floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED;
1351 /* IOMEGA Clik! drives do not support lock/unlock commands */
1352 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1353 idefloppy_create_prevent_cmd(&pc, 1);
1354 (void) idefloppy_queue_pc_tail(drive, &pc);
1356 check_disk_change(inode->i_bdev);
1357 } else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) {
1359 goto out_put_floppy;
1365 ide_floppy_put(floppy);
1369 static int idefloppy_release(struct inode *inode, struct file *filp)
1371 struct gendisk *disk = inode->i_bdev->bd_disk;
1372 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1373 ide_drive_t *drive = floppy->drive;
1374 struct ide_atapi_pc pc;
1376 debug_log("Reached %s\n", __func__);
1378 if (floppy->openers == 1) {
1379 /* IOMEGA Clik! drives do not support lock/unlock commands */
1380 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1381 idefloppy_create_prevent_cmd(&pc, 0);
1382 (void) idefloppy_queue_pc_tail(drive, &pc);
1385 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1390 ide_floppy_put(floppy);
1395 static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
1397 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1398 ide_drive_t *drive = floppy->drive;
1400 geo->heads = drive->bios_head;
1401 geo->sectors = drive->bios_sect;
1402 geo->cylinders = (u16)drive->bios_cyl; /* truncate */
1406 static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy,
1407 struct ide_atapi_pc *pc, unsigned long arg, unsigned int cmd)
1409 if (floppy->openers > 1)
1412 /* The IOMEGA Clik! Drive doesn't support this command -
1413 * no room for an eject mechanism */
1414 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1415 int prevent = arg ? 1 : 0;
1417 if (cmd == CDROMEJECT)
1420 idefloppy_create_prevent_cmd(pc, prevent);
1421 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1424 if (cmd == CDROMEJECT) {
1425 idefloppy_create_start_stop_cmd(pc, 2);
1426 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1432 static int ide_floppy_format_unit(idefloppy_floppy_t *floppy,
1435 int blocks, length, flags, err = 0;
1436 struct ide_atapi_pc pc;
1438 if (floppy->openers > 1) {
1439 /* Don't format if someone is using the disk */
1440 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1444 floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1447 * Send ATAPI_FORMAT_UNIT to the drive.
1449 * Userland gives us the following structure:
1451 * struct idefloppy_format_command {
1457 * flags is a bitmask, currently, the only defined flag is:
1459 * 0x01 - verify media after format.
1461 if (get_user(blocks, arg) ||
1462 get_user(length, arg+1) ||
1463 get_user(flags, arg+2)) {
1468 (void) idefloppy_get_sfrp_bit(floppy->drive);
1469 idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
1471 if (idefloppy_queue_pc_tail(floppy->drive, &pc))
1476 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1481 static int idefloppy_ioctl(struct inode *inode, struct file *file,
1482 unsigned int cmd, unsigned long arg)
1484 struct block_device *bdev = inode->i_bdev;
1485 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1486 ide_drive_t *drive = floppy->drive;
1487 struct ide_atapi_pc pc;
1488 void __user *argp = (void __user *)arg;
1494 case CDROM_LOCKDOOR:
1495 return ide_floppy_lockdoor(floppy, &pc, arg, cmd);
1496 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
1498 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
1499 return ide_floppy_get_format_capacities(drive, argp);
1500 case IDEFLOPPY_IOCTL_FORMAT_START:
1501 if (!(file->f_mode & 2))
1504 return ide_floppy_format_unit(floppy, (int __user *)arg);
1505 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
1506 return idefloppy_get_format_progress(drive, argp);
1510 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1511 * and CDROM_SEND_PACKET (legacy) ioctls
1513 if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
1514 err = scsi_cmd_ioctl(file, bdev->bd_disk->queue,
1515 bdev->bd_disk, cmd, argp);
1520 err = generic_ide_ioctl(drive, file, bdev, cmd, arg);
1525 static int idefloppy_media_changed(struct gendisk *disk)
1527 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1528 ide_drive_t *drive = floppy->drive;
1531 /* do not scan partitions twice if this is a removable device */
1532 if (drive->attach) {
1536 ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED);
1537 floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED;
1541 static int idefloppy_revalidate_disk(struct gendisk *disk)
1543 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1544 set_capacity(disk, idefloppy_capacity(floppy->drive));
1548 static struct block_device_operations idefloppy_ops = {
1549 .owner = THIS_MODULE,
1550 .open = idefloppy_open,
1551 .release = idefloppy_release,
1552 .ioctl = idefloppy_ioctl,
1553 .getgeo = idefloppy_getgeo,
1554 .media_changed = idefloppy_media_changed,
1555 .revalidate_disk = idefloppy_revalidate_disk
1558 static int ide_floppy_probe(ide_drive_t *drive)
1560 idefloppy_floppy_t *floppy;
1563 if (!strstr("ide-floppy", drive->driver_req))
1565 if (!drive->present)
1567 if (drive->media != ide_floppy)
1569 if (!idefloppy_identify_device(drive, drive->id)) {
1570 printk(KERN_ERR "ide-floppy: %s: not supported by this version"
1571 " of ide-floppy\n", drive->name);
1575 printk(KERN_INFO "ide-floppy: passing drive %s to ide-scsi"
1576 " emulation.\n", drive->name);
1579 floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL);
1581 printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy"
1582 " structure\n", drive->name);
1586 g = alloc_disk(1 << PARTN_BITS);
1588 goto out_free_floppy;
1590 ide_init_disk(g, drive);
1592 ide_proc_register_driver(drive, &idefloppy_driver);
1594 kref_init(&floppy->kref);
1596 floppy->drive = drive;
1597 floppy->driver = &idefloppy_driver;
1600 g->private_data = &floppy->driver;
1602 drive->driver_data = floppy;
1604 idefloppy_setup(drive, floppy);
1606 g->minors = 1 << PARTN_BITS;
1607 g->driverfs_dev = &drive->gendev;
1608 g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
1609 g->fops = &idefloppy_ops;
1620 static void __exit idefloppy_exit(void)
1622 driver_unregister(&idefloppy_driver.gen_driver);
1625 static int __init idefloppy_init(void)
1627 printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
1628 return driver_register(&idefloppy_driver.gen_driver);
1631 MODULE_ALIAS("ide:*m-floppy*");
1632 module_init(idefloppy_init);
1633 module_exit(idefloppy_exit);
1634 MODULE_LICENSE("GPL");
1635 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");