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);
266 ide_atapi_write_zeros(drive, bcount);
268 ide_atapi_discard_data(drive, bcount);
272 static void idefloppy_update_buffers(ide_drive_t *drive,
273 struct ide_atapi_pc *pc)
275 struct request *rq = pc->rq;
276 struct bio *bio = rq->bio;
278 while ((bio = rq->bio) != NULL)
279 idefloppy_end_request(drive, 1, 0);
283 * Generate a new packet command request in front of the request queue, before
284 * the current request so that it will be processed immediately, on the next
285 * pass through the driver.
287 static void idefloppy_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc,
290 struct ide_floppy_obj *floppy = drive->driver_data;
292 ide_init_drive_cmd(rq);
293 rq->buffer = (char *) pc;
294 rq->cmd_type = REQ_TYPE_SPECIAL;
295 rq->rq_disk = floppy->disk;
296 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
299 static struct ide_atapi_pc *idefloppy_next_pc_storage(ide_drive_t *drive)
301 idefloppy_floppy_t *floppy = drive->driver_data;
303 if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK)
304 floppy->pc_stack_index = 0;
305 return (&floppy->pc_stack[floppy->pc_stack_index++]);
308 static struct request *idefloppy_next_rq_storage(ide_drive_t *drive)
310 idefloppy_floppy_t *floppy = drive->driver_data;
312 if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK)
313 floppy->rq_stack_index = 0;
314 return (&floppy->rq_stack[floppy->rq_stack_index++]);
317 static void idefloppy_request_sense_callback(ide_drive_t *drive)
319 idefloppy_floppy_t *floppy = drive->driver_data;
320 u8 *buf = floppy->pc->buf;
322 debug_log("Reached %s\n", __func__);
324 if (!floppy->pc->error) {
325 floppy->sense_key = buf[2] & 0x0F;
326 floppy->asc = buf[12];
327 floppy->ascq = buf[13];
328 floppy->progress_indication = buf[15] & 0x80 ?
329 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
331 if (floppy->failed_pc)
332 debug_log("pc = %x, sense key = %x, asc = %x,"
334 floppy->failed_pc->c[0],
339 debug_log("sense key = %x, asc = %x, ascq = %x\n",
345 idefloppy_end_request(drive, 1, 0);
347 printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting"
349 idefloppy_end_request(drive, 0, 0);
353 /* General packet command callback function. */
354 static void idefloppy_pc_callback(ide_drive_t *drive)
356 idefloppy_floppy_t *floppy = drive->driver_data;
358 debug_log("Reached %s\n", __func__);
360 idefloppy_end_request(drive, floppy->pc->error ? 0 : 1, 0);
363 static void idefloppy_init_pc(struct ide_atapi_pc *pc)
365 memset(pc->c, 0, 12);
369 pc->buf = pc->pc_buf;
370 pc->buf_size = IDEFLOPPY_PC_BUFFER_SIZE;
371 pc->idefloppy_callback = &idefloppy_pc_callback;
374 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc)
376 idefloppy_init_pc(pc);
377 pc->c[0] = GPCMD_REQUEST_SENSE;
380 pc->idefloppy_callback = &idefloppy_request_sense_callback;
384 * Called when an error was detected during the last packet command. We queue a
385 * request sense packet command in the head of the request list.
387 static void idefloppy_retry_pc(ide_drive_t *drive)
389 struct ide_atapi_pc *pc;
392 (void)ide_read_error(drive);
393 pc = idefloppy_next_pc_storage(drive);
394 rq = idefloppy_next_rq_storage(drive);
395 idefloppy_create_request_sense_cmd(pc);
396 idefloppy_queue_pc_head(drive, pc, rq);
399 /* The usual interrupt handler called during a packet command. */
400 static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive)
402 idefloppy_floppy_t *floppy = drive->driver_data;
403 ide_hwif_t *hwif = drive->hwif;
404 struct ide_atapi_pc *pc = floppy->pc;
405 struct request *rq = pc->rq;
406 xfer_func_t *xferfunc;
412 debug_log("Reached %s interrupt handler\n", __func__);
414 if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
415 dma_error = hwif->dma_ops->dma_end(drive);
417 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
418 rq_data_dir(rq) ? "write" : "read");
419 pc->flags |= PC_FLAG_DMA_ERROR;
421 pc->xferred = pc->req_xfer;
422 idefloppy_update_buffers(drive, pc);
424 debug_log("DMA finished\n");
427 /* Clear the interrupt */
428 stat = ide_read_status(drive);
430 /* No more interrupts */
431 if ((stat & DRQ_STAT) == 0) {
432 debug_log("Packet command completed, %d bytes transferred\n",
434 pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
436 local_irq_enable_in_hardirq();
438 if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) {
440 debug_log("%s: I/O error\n", drive->name);
442 if (pc->c[0] == GPCMD_REQUEST_SENSE) {
443 printk(KERN_ERR "ide-floppy: I/O error in "
444 "request sense command\n");
445 return ide_do_reset(drive);
447 /* Retry operation */
448 idefloppy_retry_pc(drive);
449 /* queued, but not started */
453 if (floppy->failed_pc == pc)
454 floppy->failed_pc = NULL;
455 /* Command finished - Call the callback function */
456 pc->idefloppy_callback(drive);
460 if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
461 pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
462 printk(KERN_ERR "ide-floppy: The floppy wants to issue "
463 "more interrupts in DMA mode\n");
465 return ide_do_reset(drive);
468 /* Get the number of bytes to transfer */
469 bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) |
470 hwif->INB(hwif->io_ports.lbam_addr);
471 /* on this interrupt */
472 ireason = hwif->INB(hwif->io_ports.nsect_addr);
475 printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__);
476 return ide_do_reset(drive);
478 if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) {
479 /* Hopefully, we will never get here */
480 printk(KERN_ERR "ide-floppy: We wanted to %s, ",
481 (ireason & IO) ? "Write" : "Read");
482 printk(KERN_ERR "but the floppy wants us to %s !\n",
483 (ireason & IO) ? "Read" : "Write");
484 return ide_do_reset(drive);
486 if (!(pc->flags & PC_FLAG_WRITING)) {
487 /* Reading - Check that we have enough space */
488 temp = pc->xferred + bcount;
489 if (temp > pc->req_xfer) {
490 if (temp > pc->buf_size) {
491 printk(KERN_ERR "ide-floppy: The floppy wants "
492 "to send us more data than expected "
493 "- discarding data\n");
494 ide_atapi_discard_data(drive, bcount);
496 ide_set_handler(drive,
502 debug_log("The floppy wants to send us more data than"
503 " expected - allowing transfer\n");
506 if (pc->flags & PC_FLAG_WRITING)
507 xferfunc = hwif->output_data;
509 xferfunc = hwif->input_data;
512 xferfunc(drive, NULL, pc->cur_pos, bcount);
514 ide_floppy_io_buffers(drive, pc, bcount,
515 !!(pc->flags & PC_FLAG_WRITING));
517 /* Update the current position */
518 pc->xferred += bcount;
519 pc->cur_pos += bcount;
521 /* And set the interrupt handler again */
522 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
527 * This is the original routine that did the packet transfer.
528 * It fails at high speeds on the Iomega ZIP drive, so there's a slower version
529 * for that drive below. The algorithm is chosen based on drive type
531 static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive)
533 ide_hwif_t *hwif = drive->hwif;
534 ide_startstop_t startstop;
535 idefloppy_floppy_t *floppy = drive->driver_data;
538 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
539 printk(KERN_ERR "ide-floppy: Strange, packet command "
540 "initiated yet DRQ isn't asserted\n");
543 ireason = hwif->INB(hwif->io_ports.nsect_addr);
544 if ((ireason & CD) == 0 || (ireason & IO)) {
545 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while "
546 "issuing a packet command\n");
547 return ide_do_reset(drive);
550 /* Set the interrupt routine */
551 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
553 /* Send the actual packet */
554 hwif->output_data(drive, NULL, floppy->pc->c, 12);
561 * What we have here is a classic case of a top half / bottom half interrupt
562 * service routine. In interrupt mode, the device sends an interrupt to signal
563 * that it is ready to receive a packet. However, we need to delay about 2-3
564 * ticks before issuing the packet or we gets in trouble.
566 * So, follow carefully. transfer_pc1 is called as an interrupt (or directly).
567 * In either case, when the device says it's ready for a packet, we schedule
568 * the packet transfer to occur about 2-3 ticks later in transfer_pc2.
570 static int idefloppy_transfer_pc2(ide_drive_t *drive)
572 idefloppy_floppy_t *floppy = drive->driver_data;
574 /* Send the actual packet */
575 drive->hwif->output_data(drive, NULL, floppy->pc->c, 12);
577 /* Timeout for the packet command */
578 return IDEFLOPPY_WAIT_CMD;
581 static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive)
583 ide_hwif_t *hwif = drive->hwif;
584 idefloppy_floppy_t *floppy = drive->driver_data;
585 ide_startstop_t startstop;
588 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
589 printk(KERN_ERR "ide-floppy: Strange, packet command "
590 "initiated yet DRQ isn't asserted\n");
593 ireason = hwif->INB(hwif->io_ports.nsect_addr);
594 if ((ireason & CD) == 0 || (ireason & IO)) {
595 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) "
596 "while issuing a packet command\n");
597 return ide_do_reset(drive);
600 * The following delay solves a problem with ATAPI Zip 100 drives
601 * where the Busy flag was apparently being deasserted before the
602 * unit was ready to receive data. This was happening on a
603 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
604 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
605 * used until after the packet is moved in about 50 msec.
608 ide_set_handler(drive, &idefloppy_pc_intr, floppy->ticks,
609 &idefloppy_transfer_pc2);
613 static void ide_floppy_report_error(idefloppy_floppy_t *floppy,
614 struct ide_atapi_pc *pc)
616 /* supress error messages resulting from Medium not present */
617 if (floppy->sense_key == 0x02 &&
618 floppy->asc == 0x3a &&
619 floppy->ascq == 0x00)
622 printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
623 "asc = %2x, ascq = %2x\n",
624 floppy->drive->name, pc->c[0], floppy->sense_key,
625 floppy->asc, floppy->ascq);
629 static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
630 struct ide_atapi_pc *pc)
632 idefloppy_floppy_t *floppy = drive->driver_data;
633 ide_hwif_t *hwif = drive->hwif;
634 ide_handler_t *pkt_xfer_routine;
638 if (floppy->failed_pc == NULL &&
639 pc->c[0] != GPCMD_REQUEST_SENSE)
640 floppy->failed_pc = pc;
641 /* Set the current packet command */
644 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
645 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
646 ide_floppy_report_error(floppy, pc);
648 pc->error = IDEFLOPPY_ERROR_GENERAL;
650 floppy->failed_pc = NULL;
651 pc->idefloppy_callback(drive);
655 debug_log("Retry number - %d\n", pc->retries);
658 /* We haven't transferred any data yet */
660 pc->cur_pos = pc->buf;
661 bcount = min(pc->req_xfer, 63 * 1024);
663 if (pc->flags & PC_FLAG_DMA_ERROR) {
664 pc->flags &= ~PC_FLAG_DMA_ERROR;
669 if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma)
670 dma = !hwif->dma_ops->dma_setup(drive);
672 ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
673 IDE_TFLAG_OUT_DEVICE, bcount, dma);
676 /* Begin DMA, if necessary */
677 pc->flags |= PC_FLAG_DMA_IN_PROGRESS;
678 hwif->dma_ops->dma_start(drive);
681 /* Can we transfer the packet when we get the interrupt or wait? */
682 if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) {
684 pkt_xfer_routine = &idefloppy_transfer_pc1;
687 pkt_xfer_routine = &idefloppy_transfer_pc;
690 if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) {
691 /* Issue the packet command */
692 ide_execute_command(drive, WIN_PACKETCMD,
698 /* Issue the packet command */
699 hwif->OUTBSYNC(drive, WIN_PACKETCMD,
700 hwif->io_ports.command_addr);
702 return (*pkt_xfer_routine) (drive);
706 static void idefloppy_rw_callback(ide_drive_t *drive)
708 debug_log("Reached %s\n", __func__);
710 idefloppy_end_request(drive, 1, 0);
714 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent)
716 debug_log("creating prevent removal command, prevent = %d\n", prevent);
718 idefloppy_init_pc(pc);
719 pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
723 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
725 idefloppy_init_pc(pc);
726 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
732 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b,
735 idefloppy_init_pc(pc);
736 pc->c[0] = GPCMD_FORMAT_UNIT;
739 memset(pc->buf, 0, 12);
741 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
743 if (flags & 1) /* Verify bit on... */
744 pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */
747 put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4]));
748 put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8]));
750 pc->flags |= PC_FLAG_WRITING;
753 /* A mode sense command is used to "sense" floppy parameters. */
754 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc,
755 u8 page_code, u8 type)
757 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
759 idefloppy_init_pc(pc);
760 pc->c[0] = GPCMD_MODE_SENSE_10;
762 pc->c[2] = page_code + (type << 6);
765 case IDEFLOPPY_CAPABILITIES_PAGE:
768 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
772 printk(KERN_ERR "ide-floppy: unsupported page code "
773 "in create_mode_sense_cmd\n");
775 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
776 pc->req_xfer = length;
779 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start)
781 idefloppy_init_pc(pc);
782 pc->c[0] = GPCMD_START_STOP_UNIT;
786 static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc *pc)
788 idefloppy_init_pc(pc);
789 pc->c[0] = GPCMD_TEST_UNIT_READY;
792 static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy,
793 struct ide_atapi_pc *pc, struct request *rq,
794 unsigned long sector)
796 int block = sector / floppy->bs_factor;
797 int blocks = rq->nr_sectors / floppy->bs_factor;
798 int cmd = rq_data_dir(rq);
800 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
803 idefloppy_init_pc(pc);
804 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
805 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
806 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
808 pc->idefloppy_callback = &idefloppy_rw_callback;
810 pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
811 if (rq->cmd_flags & REQ_RW)
812 pc->flags |= PC_FLAG_WRITING;
814 pc->req_xfer = pc->buf_size = blocks * floppy->block_size;
815 pc->flags |= PC_FLAG_DMA_RECOMMENDED;
818 static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
819 struct ide_atapi_pc *pc, struct request *rq)
821 idefloppy_init_pc(pc);
822 pc->idefloppy_callback = &idefloppy_rw_callback;
823 memcpy(pc->c, rq->cmd, sizeof(pc->c));
825 pc->b_count = rq->data_len;
826 if (rq->data_len && rq_data_dir(rq) == WRITE)
827 pc->flags |= PC_FLAG_WRITING;
830 pc->flags |= PC_FLAG_DMA_RECOMMENDED;
832 * possibly problematic, doesn't look like ide-floppy correctly
833 * handled scattered requests if dma fails...
835 pc->req_xfer = pc->buf_size = rq->data_len;
838 static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
839 struct request *rq, sector_t block_s)
841 idefloppy_floppy_t *floppy = drive->driver_data;
842 struct ide_atapi_pc *pc;
843 unsigned long block = (unsigned long)block_s;
845 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
846 rq->rq_disk ? rq->rq_disk->disk_name : "?",
847 rq->cmd_type, rq->errors);
848 debug_log("sector: %ld, nr_sectors: %ld, "
849 "current_nr_sectors: %d\n", (long)rq->sector,
850 rq->nr_sectors, rq->current_nr_sectors);
852 if (rq->errors >= ERROR_MAX) {
853 if (floppy->failed_pc)
854 ide_floppy_report_error(floppy, floppy->failed_pc);
856 printk(KERN_ERR "ide-floppy: %s: I/O error\n",
858 idefloppy_end_request(drive, 0, 0);
861 if (blk_fs_request(rq)) {
862 if (((long)rq->sector % floppy->bs_factor) ||
863 (rq->nr_sectors % floppy->bs_factor)) {
864 printk(KERN_ERR "%s: unsupported r/w request size\n",
866 idefloppy_end_request(drive, 0, 0);
869 pc = idefloppy_next_pc_storage(drive);
870 idefloppy_create_rw_cmd(floppy, pc, rq, block);
871 } else if (blk_special_request(rq)) {
872 pc = (struct ide_atapi_pc *) rq->buffer;
873 } else if (blk_pc_request(rq)) {
874 pc = idefloppy_next_pc_storage(drive);
875 idefloppy_blockpc_cmd(floppy, pc, rq);
877 blk_dump_rq_flags(rq,
878 "ide-floppy: unsupported command in queue");
879 idefloppy_end_request(drive, 0, 0);
884 return idefloppy_issue_pc(drive, pc);
888 * Add a special packet command request to the tail of the request queue,
889 * and wait for it to be serviced.
891 static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc)
893 struct ide_floppy_obj *floppy = drive->driver_data;
896 ide_init_drive_cmd(&rq);
897 rq.buffer = (char *) pc;
898 rq.cmd_type = REQ_TYPE_SPECIAL;
899 rq.rq_disk = floppy->disk;
901 return ide_do_drive_cmd(drive, &rq, ide_wait);
905 * Look at the flexible disk page parameters. We ignore the CHS capacity
906 * parameters and use the LBA parameters instead.
908 static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive)
910 idefloppy_floppy_t *floppy = drive->driver_data;
911 struct ide_atapi_pc pc;
913 int capacity, lba_capacity;
914 u16 transfer_rate, sector_size, cyls, rpm;
917 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE,
920 if (idefloppy_queue_pc_tail(drive, &pc)) {
921 printk(KERN_ERR "ide-floppy: Can't get flexible disk page"
925 floppy->wp = !!(pc.buf[3] & 0x80);
926 set_disk_ro(floppy->disk, floppy->wp);
929 transfer_rate = be16_to_cpu(*(u16 *)&pc.buf[8 + 2]);
930 sector_size = be16_to_cpu(*(u16 *)&pc.buf[8 + 6]);
931 cyls = be16_to_cpu(*(u16 *)&pc.buf[8 + 8]);
932 rpm = be16_to_cpu(*(u16 *)&pc.buf[8 + 28]);
933 heads = pc.buf[8 + 4];
934 sectors = pc.buf[8 + 5];
936 capacity = cyls * heads * sectors * sector_size;
938 if (memcmp(page, &floppy->flexible_disk_page, 32))
939 printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, "
940 "%d sector size, %d rpm\n",
941 drive->name, capacity / 1024, cyls, heads,
942 sectors, transfer_rate / 8, sector_size, rpm);
944 memcpy(&floppy->flexible_disk_page, page, 32);
945 drive->bios_cyl = cyls;
946 drive->bios_head = heads;
947 drive->bios_sect = sectors;
948 lba_capacity = floppy->blocks * floppy->block_size;
950 if (capacity < lba_capacity) {
951 printk(KERN_NOTICE "%s: The disk reports a capacity of %d "
952 "bytes, but the drive only handles %d\n",
953 drive->name, lba_capacity, capacity);
954 floppy->blocks = floppy->block_size ?
955 capacity / floppy->block_size : 0;
960 static int idefloppy_get_sfrp_bit(ide_drive_t *drive)
962 idefloppy_floppy_t *floppy = drive->driver_data;
963 struct ide_atapi_pc pc;
966 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE,
969 pc.flags |= PC_FLAG_SUPPRESS_ERROR;
970 if (idefloppy_queue_pc_tail(drive, &pc))
973 floppy->srfp = pc.buf[8 + 2] & 0x40;
978 * Determine if a media is present in the floppy drive, and if so, its LBA
981 static int ide_floppy_get_capacity(ide_drive_t *drive)
983 idefloppy_floppy_t *floppy = drive->driver_data;
984 struct ide_atapi_pc pc;
986 u8 header_len, desc_cnt;
987 int i, rc = 1, blocks, length;
990 drive->bios_head = drive->bios_sect = 0;
992 floppy->bs_factor = 1;
993 set_capacity(floppy->disk, 0);
995 idefloppy_create_read_capacity_cmd(&pc);
996 if (idefloppy_queue_pc_tail(drive, &pc)) {
997 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1000 header_len = pc.buf[3];
1001 cap_desc = &pc.buf[4];
1002 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
1004 for (i = 0; i < desc_cnt; i++) {
1005 unsigned int desc_start = 4 + i*8;
1007 blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]);
1008 length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]);
1010 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
1011 i, blocks * length / 1024, blocks, length);
1016 * the code below is valid only for the 1st descriptor, ie i=0
1019 switch (pc.buf[desc_start + 4] & 0x03) {
1020 /* Clik! drive returns this instead of CAPACITY_CURRENT */
1021 case CAPACITY_UNFORMATTED:
1022 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
1024 * If it is not a clik drive, break out
1025 * (maintains previous driver behaviour)
1028 case CAPACITY_CURRENT:
1029 /* Normal Zip/LS-120 disks */
1030 if (memcmp(cap_desc, &floppy->cap_desc, 8))
1031 printk(KERN_INFO "%s: %dkB, %d blocks, %d "
1032 "sector size\n", drive->name,
1033 blocks * length / 1024, blocks, length);
1034 memcpy(&floppy->cap_desc, cap_desc, 8);
1036 if (!length || length % 512) {
1037 printk(KERN_NOTICE "%s: %d bytes block size "
1038 "not supported\n", drive->name, length);
1040 floppy->blocks = blocks;
1041 floppy->block_size = length;
1042 floppy->bs_factor = length / 512;
1043 if (floppy->bs_factor != 1)
1044 printk(KERN_NOTICE "%s: warning: non "
1045 "512 bytes block size not "
1046 "fully supported\n",
1051 case CAPACITY_NO_CARTRIDGE:
1053 * This is a KERN_ERR so it appears on screen
1054 * for the user to see
1056 printk(KERN_ERR "%s: No disk in drive\n", drive->name);
1058 case CAPACITY_INVALID:
1059 printk(KERN_ERR "%s: Invalid capacity for disk "
1060 "in drive\n", drive->name);
1063 debug_log("Descriptor 0 Code: %d\n",
1064 pc.buf[desc_start + 4] & 0x03);
1067 /* Clik! disk does not support get_flexible_disk_page */
1068 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
1069 (void) ide_floppy_get_flexible_disk_page(drive);
1071 set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
1076 * Obtain the list of formattable capacities.
1077 * Very similar to ide_floppy_get_capacity, except that we push the capacity
1078 * descriptors to userland, instead of our own structures.
1080 * Userland gives us the following structure:
1082 * struct idefloppy_format_capacities {
1090 * userland initializes nformats to the number of allocated formats[] records.
1091 * On exit we set nformats to the number of records we've actually initialized.
1094 static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
1096 struct ide_atapi_pc pc;
1097 u8 header_len, desc_cnt;
1098 int i, blocks, length, u_array_size, u_index;
1101 if (get_user(u_array_size, arg))
1104 if (u_array_size <= 0)
1107 idefloppy_create_read_capacity_cmd(&pc);
1108 if (idefloppy_queue_pc_tail(drive, &pc)) {
1109 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1112 header_len = pc.buf[3];
1113 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
1119 * We always skip the first capacity descriptor. That's the current
1120 * capacity. We are interested in the remaining descriptors, the
1121 * formattable capacities.
1123 for (i = 1; i < desc_cnt; i++) {
1124 unsigned int desc_start = 4 + i*8;
1126 if (u_index >= u_array_size)
1127 break; /* User-supplied buffer too small */
1129 blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]);
1130 length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]);
1132 if (put_user(blocks, argp))
1136 if (put_user(length, argp))
1143 if (put_user(u_index, arg))
1149 * Get ATAPI_FORMAT_UNIT progress indication.
1151 * Userland gives a pointer to an int. The int is set to a progress
1152 * indicator 0-65536, with 65536=100%.
1154 * If the drive does not support format progress indication, we just check
1155 * the dsc bit, and return either 0 or 65536.
1158 static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg)
1160 idefloppy_floppy_t *floppy = drive->driver_data;
1161 struct ide_atapi_pc pc;
1162 int progress_indication = 0x10000;
1165 idefloppy_create_request_sense_cmd(&pc);
1166 if (idefloppy_queue_pc_tail(drive, &pc))
1169 if (floppy->sense_key == 2 &&
1172 progress_indication = floppy->progress_indication;
1174 /* Else assume format_unit has finished, and we're at 0x10000 */
1176 unsigned long flags;
1179 local_irq_save(flags);
1180 stat = ide_read_status(drive);
1181 local_irq_restore(flags);
1183 progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000;
1185 if (put_user(progress_indication, arg))
1191 static sector_t idefloppy_capacity(ide_drive_t *drive)
1193 idefloppy_floppy_t *floppy = drive->driver_data;
1194 unsigned long capacity = floppy->blocks * floppy->bs_factor;
1200 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
1203 static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id)
1206 u8 device_type, protocol, removable, drq_type, packet_size;
1208 *((u16 *) &gcw) = id->config;
1210 device_type = gcw[1] & 0x1F;
1211 removable = (gcw[0] & 0x80) >> 7;
1212 protocol = (gcw[1] & 0xC0) >> 6;
1213 drq_type = (gcw[0] & 0x60) >> 5;
1214 packet_size = gcw[0] & 0x03;
1217 /* kludge for Apple PowerBook internal zip */
1218 if (device_type == 5 &&
1219 !strstr(id->model, "CD-ROM") && strstr(id->model, "ZIP"))
1224 printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1226 else if (device_type != 0)
1227 printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set "
1228 "to floppy\n", device_type);
1229 else if (!removable)
1230 printk(KERN_ERR "ide-floppy: The removable flag is not set\n");
1231 else if (drq_type == 3)
1232 printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not "
1233 "supported\n", drq_type);
1234 else if (packet_size != 0)
1235 printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 "
1236 "bytes\n", packet_size);
1242 #ifdef CONFIG_IDE_PROC_FS
1243 static void idefloppy_add_settings(ide_drive_t *drive)
1245 idefloppy_floppy_t *floppy = drive->driver_data;
1247 ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1,
1248 &drive->bios_cyl, NULL);
1249 ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
1250 &drive->bios_head, NULL);
1251 ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1,
1252 &drive->bios_sect, NULL);
1253 ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
1254 &floppy->ticks, NULL);
1257 static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
1260 static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
1264 *((u16 *) &gcw) = drive->id->config;
1265 floppy->pc = floppy->pc_stack;
1267 if (((gcw[0] & 0x60) >> 5) == 1)
1268 floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT;
1270 * We used to check revisions here. At this point however I'm giving up.
1271 * Just assume they are all broken, its easier.
1273 * The actual reason for the workarounds was likely a driver bug after
1274 * all rather than a firmware bug, and the workaround below used to hide
1275 * it. It should be fixed as of version 1.9, but to be on the safe side
1276 * we'll leave the limitation below for the 2.2.x tree.
1278 if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
1279 floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE;
1280 /* This value will be visible in the /proc/ide/hdx/settings */
1281 floppy->ticks = IDEFLOPPY_TICKS_DELAY;
1282 blk_queue_max_sectors(drive->queue, 64);
1286 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1287 * nasty clicking noises without it, so please don't remove this.
1289 if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
1290 blk_queue_max_sectors(drive->queue, 64);
1291 floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE;
1294 (void) ide_floppy_get_capacity(drive);
1295 idefloppy_add_settings(drive);
1298 static void ide_floppy_remove(ide_drive_t *drive)
1300 idefloppy_floppy_t *floppy = drive->driver_data;
1301 struct gendisk *g = floppy->disk;
1303 ide_proc_unregister_driver(drive, floppy->driver);
1307 ide_floppy_put(floppy);
1310 static void idefloppy_cleanup_obj(struct kref *kref)
1312 struct ide_floppy_obj *floppy = to_ide_floppy(kref);
1313 ide_drive_t *drive = floppy->drive;
1314 struct gendisk *g = floppy->disk;
1316 drive->driver_data = NULL;
1317 g->private_data = NULL;
1322 #ifdef CONFIG_IDE_PROC_FS
1323 static int proc_idefloppy_read_capacity(char *page, char **start, off_t off,
1324 int count, int *eof, void *data)
1326 ide_drive_t*drive = (ide_drive_t *)data;
1329 len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive));
1330 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1333 static ide_proc_entry_t idefloppy_proc[] = {
1334 { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL },
1335 { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
1336 { NULL, 0, NULL, NULL }
1338 #endif /* CONFIG_IDE_PROC_FS */
1340 static int ide_floppy_probe(ide_drive_t *);
1342 static ide_driver_t idefloppy_driver = {
1344 .owner = THIS_MODULE,
1345 .name = "ide-floppy",
1346 .bus = &ide_bus_type,
1348 .probe = ide_floppy_probe,
1349 .remove = ide_floppy_remove,
1350 .version = IDEFLOPPY_VERSION,
1351 .media = ide_floppy,
1352 .supports_dsc_overlap = 0,
1353 .do_request = idefloppy_do_request,
1354 .end_request = idefloppy_end_request,
1355 .error = __ide_error,
1356 .abort = __ide_abort,
1357 #ifdef CONFIG_IDE_PROC_FS
1358 .proc = idefloppy_proc,
1362 static int idefloppy_open(struct inode *inode, struct file *filp)
1364 struct gendisk *disk = inode->i_bdev->bd_disk;
1365 struct ide_floppy_obj *floppy;
1367 struct ide_atapi_pc pc;
1370 debug_log("Reached %s\n", __func__);
1372 floppy = ide_floppy_get(disk);
1376 drive = floppy->drive;
1380 if (floppy->openers == 1) {
1381 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1384 idefloppy_create_test_unit_ready_cmd(&pc);
1385 if (idefloppy_queue_pc_tail(drive, &pc)) {
1386 idefloppy_create_start_stop_cmd(&pc, 1);
1387 (void) idefloppy_queue_pc_tail(drive, &pc);
1390 if (ide_floppy_get_capacity(drive)
1391 && (filp->f_flags & O_NDELAY) == 0
1393 * Allow O_NDELAY to open a drive without a disk, or with an
1394 * unreadable disk, so that we can get the format capacity
1395 * of the drive or begin the format - Sam
1399 goto out_put_floppy;
1402 if (floppy->wp && (filp->f_mode & 2)) {
1404 goto out_put_floppy;
1406 floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED;
1407 /* IOMEGA Clik! drives do not support lock/unlock commands */
1408 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1409 idefloppy_create_prevent_cmd(&pc, 1);
1410 (void) idefloppy_queue_pc_tail(drive, &pc);
1412 check_disk_change(inode->i_bdev);
1413 } else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) {
1415 goto out_put_floppy;
1421 ide_floppy_put(floppy);
1425 static int idefloppy_release(struct inode *inode, struct file *filp)
1427 struct gendisk *disk = inode->i_bdev->bd_disk;
1428 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1429 ide_drive_t *drive = floppy->drive;
1430 struct ide_atapi_pc pc;
1432 debug_log("Reached %s\n", __func__);
1434 if (floppy->openers == 1) {
1435 /* IOMEGA Clik! drives do not support lock/unlock commands */
1436 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1437 idefloppy_create_prevent_cmd(&pc, 0);
1438 (void) idefloppy_queue_pc_tail(drive, &pc);
1441 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1446 ide_floppy_put(floppy);
1451 static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
1453 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1454 ide_drive_t *drive = floppy->drive;
1456 geo->heads = drive->bios_head;
1457 geo->sectors = drive->bios_sect;
1458 geo->cylinders = (u16)drive->bios_cyl; /* truncate */
1462 static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy,
1463 struct ide_atapi_pc *pc, unsigned long arg, unsigned int cmd)
1465 if (floppy->openers > 1)
1468 /* The IOMEGA Clik! Drive doesn't support this command -
1469 * no room for an eject mechanism */
1470 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1471 int prevent = arg ? 1 : 0;
1473 if (cmd == CDROMEJECT)
1476 idefloppy_create_prevent_cmd(pc, prevent);
1477 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1480 if (cmd == CDROMEJECT) {
1481 idefloppy_create_start_stop_cmd(pc, 2);
1482 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1488 static int ide_floppy_format_unit(idefloppy_floppy_t *floppy,
1491 int blocks, length, flags, err = 0;
1492 struct ide_atapi_pc pc;
1494 if (floppy->openers > 1) {
1495 /* Don't format if someone is using the disk */
1496 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1500 floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1503 * Send ATAPI_FORMAT_UNIT to the drive.
1505 * Userland gives us the following structure:
1507 * struct idefloppy_format_command {
1513 * flags is a bitmask, currently, the only defined flag is:
1515 * 0x01 - verify media after format.
1517 if (get_user(blocks, arg) ||
1518 get_user(length, arg+1) ||
1519 get_user(flags, arg+2)) {
1524 (void) idefloppy_get_sfrp_bit(floppy->drive);
1525 idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
1527 if (idefloppy_queue_pc_tail(floppy->drive, &pc))
1532 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1537 static int idefloppy_ioctl(struct inode *inode, struct file *file,
1538 unsigned int cmd, unsigned long arg)
1540 struct block_device *bdev = inode->i_bdev;
1541 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1542 ide_drive_t *drive = floppy->drive;
1543 struct ide_atapi_pc pc;
1544 void __user *argp = (void __user *)arg;
1550 case CDROM_LOCKDOOR:
1551 return ide_floppy_lockdoor(floppy, &pc, arg, cmd);
1552 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
1554 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
1555 return ide_floppy_get_format_capacities(drive, argp);
1556 case IDEFLOPPY_IOCTL_FORMAT_START:
1557 if (!(file->f_mode & 2))
1560 return ide_floppy_format_unit(floppy, (int __user *)arg);
1561 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
1562 return idefloppy_get_format_progress(drive, argp);
1566 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1567 * and CDROM_SEND_PACKET (legacy) ioctls
1569 if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
1570 err = scsi_cmd_ioctl(file, bdev->bd_disk->queue,
1571 bdev->bd_disk, cmd, argp);
1576 err = generic_ide_ioctl(drive, file, bdev, cmd, arg);
1581 static int idefloppy_media_changed(struct gendisk *disk)
1583 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1584 ide_drive_t *drive = floppy->drive;
1587 /* do not scan partitions twice if this is a removable device */
1588 if (drive->attach) {
1592 ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED);
1593 floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED;
1597 static int idefloppy_revalidate_disk(struct gendisk *disk)
1599 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1600 set_capacity(disk, idefloppy_capacity(floppy->drive));
1604 static struct block_device_operations idefloppy_ops = {
1605 .owner = THIS_MODULE,
1606 .open = idefloppy_open,
1607 .release = idefloppy_release,
1608 .ioctl = idefloppy_ioctl,
1609 .getgeo = idefloppy_getgeo,
1610 .media_changed = idefloppy_media_changed,
1611 .revalidate_disk = idefloppy_revalidate_disk
1614 static int ide_floppy_probe(ide_drive_t *drive)
1616 idefloppy_floppy_t *floppy;
1619 if (!strstr("ide-floppy", drive->driver_req))
1621 if (!drive->present)
1623 if (drive->media != ide_floppy)
1625 if (!idefloppy_identify_device(drive, drive->id)) {
1626 printk(KERN_ERR "ide-floppy: %s: not supported by this version"
1627 " of ide-floppy\n", drive->name);
1631 printk(KERN_INFO "ide-floppy: passing drive %s to ide-scsi"
1632 " emulation.\n", drive->name);
1635 floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL);
1637 printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy"
1638 " structure\n", drive->name);
1642 g = alloc_disk(1 << PARTN_BITS);
1644 goto out_free_floppy;
1646 ide_init_disk(g, drive);
1648 ide_proc_register_driver(drive, &idefloppy_driver);
1650 kref_init(&floppy->kref);
1652 floppy->drive = drive;
1653 floppy->driver = &idefloppy_driver;
1656 g->private_data = &floppy->driver;
1658 drive->driver_data = floppy;
1660 idefloppy_setup(drive, floppy);
1662 g->minors = 1 << PARTN_BITS;
1663 g->driverfs_dev = &drive->gendev;
1664 g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
1665 g->fops = &idefloppy_ops;
1676 static void __exit idefloppy_exit(void)
1678 driver_unregister(&idefloppy_driver.gen_driver);
1681 static int __init idefloppy_init(void)
1683 printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
1684 return driver_register(&idefloppy_driver.gen_driver);
1687 MODULE_ALIAS("ide:*m-floppy*");
1688 module_init(idefloppy_init);
1689 module_exit(idefloppy_exit);
1690 MODULE_LICENSE("GPL");
1691 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");