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 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
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 idefloppy_request_sense_callback(ide_drive_t *drive)
317 idefloppy_floppy_t *floppy = drive->driver_data;
318 u8 *buf = floppy->pc->buf;
320 debug_log("Reached %s\n", __func__);
322 if (!floppy->pc->error) {
323 floppy->sense_key = buf[2] & 0x0F;
324 floppy->asc = buf[12];
325 floppy->ascq = buf[13];
326 floppy->progress_indication = buf[15] & 0x80 ?
327 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
329 if (floppy->failed_pc)
330 debug_log("pc = %x, sense key = %x, asc = %x,"
332 floppy->failed_pc->c[0],
337 debug_log("sense key = %x, asc = %x, ascq = %x\n",
343 idefloppy_end_request(drive, 1, 0);
345 printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting"
347 idefloppy_end_request(drive, 0, 0);
351 /* General packet command callback function. */
352 static void idefloppy_pc_callback(ide_drive_t *drive)
354 idefloppy_floppy_t *floppy = drive->driver_data;
356 debug_log("Reached %s\n", __func__);
358 idefloppy_end_request(drive, floppy->pc->error ? 0 : 1, 0);
361 static void idefloppy_init_pc(struct ide_atapi_pc *pc)
363 memset(pc->c, 0, 12);
367 pc->buf = pc->pc_buf;
368 pc->buf_size = IDEFLOPPY_PC_BUFFER_SIZE;
369 pc->idefloppy_callback = &idefloppy_pc_callback;
372 static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc)
374 idefloppy_init_pc(pc);
375 pc->c[0] = GPCMD_REQUEST_SENSE;
378 pc->idefloppy_callback = &idefloppy_request_sense_callback;
382 * Called when an error was detected during the last packet command. We queue a
383 * request sense packet command in the head of the request list.
385 static void idefloppy_retry_pc(ide_drive_t *drive)
387 struct ide_atapi_pc *pc;
390 (void)ide_read_error(drive);
391 pc = idefloppy_next_pc_storage(drive);
392 rq = idefloppy_next_rq_storage(drive);
393 idefloppy_create_request_sense_cmd(pc);
394 idefloppy_queue_pc_head(drive, pc, rq);
397 /* The usual interrupt handler called during a packet command. */
398 static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive)
400 idefloppy_floppy_t *floppy = drive->driver_data;
401 ide_hwif_t *hwif = drive->hwif;
402 struct ide_atapi_pc *pc = floppy->pc;
403 struct request *rq = pc->rq;
404 xfer_func_t *xferfunc;
410 debug_log("Reached %s interrupt handler\n", __func__);
412 if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
413 dma_error = hwif->dma_ops->dma_end(drive);
415 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
416 rq_data_dir(rq) ? "write" : "read");
417 pc->flags |= PC_FLAG_DMA_ERROR;
419 pc->xferred = pc->req_xfer;
420 idefloppy_update_buffers(drive, pc);
422 debug_log("DMA finished\n");
425 /* Clear the interrupt */
426 stat = ide_read_status(drive);
428 /* No more interrupts */
429 if ((stat & DRQ_STAT) == 0) {
430 debug_log("Packet command completed, %d bytes transferred\n",
432 pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
434 local_irq_enable_in_hardirq();
436 if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) {
438 debug_log("%s: I/O error\n", drive->name);
440 if (pc->c[0] == GPCMD_REQUEST_SENSE) {
441 printk(KERN_ERR "ide-floppy: I/O error in "
442 "request sense command\n");
443 return ide_do_reset(drive);
445 /* Retry operation */
446 idefloppy_retry_pc(drive);
447 /* queued, but not started */
451 if (floppy->failed_pc == pc)
452 floppy->failed_pc = NULL;
453 /* Command finished - Call the callback function */
454 pc->idefloppy_callback(drive);
458 if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
459 pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
460 printk(KERN_ERR "ide-floppy: The floppy wants to issue "
461 "more interrupts in DMA mode\n");
463 return ide_do_reset(drive);
466 /* Get the number of bytes to transfer */
467 bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) |
468 hwif->INB(hwif->io_ports.lbam_addr);
469 /* on this interrupt */
470 ireason = hwif->INB(hwif->io_ports.nsect_addr);
473 printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__);
474 return ide_do_reset(drive);
476 if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) {
477 /* Hopefully, we will never get here */
478 printk(KERN_ERR "ide-floppy: We wanted to %s, ",
479 (ireason & IO) ? "Write" : "Read");
480 printk(KERN_ERR "but the floppy wants us to %s !\n",
481 (ireason & IO) ? "Read" : "Write");
482 return ide_do_reset(drive);
484 if (!(pc->flags & PC_FLAG_WRITING)) {
485 /* Reading - Check that we have enough space */
486 temp = pc->xferred + bcount;
487 if (temp > pc->req_xfer) {
488 if (temp > pc->buf_size) {
489 printk(KERN_ERR "ide-floppy: The floppy wants "
490 "to send us more data than expected "
491 "- discarding data\n");
492 ide_pad_transfer(drive, 0, bcount);
494 ide_set_handler(drive,
500 debug_log("The floppy wants to send us more data than"
501 " expected - allowing transfer\n");
504 if (pc->flags & PC_FLAG_WRITING)
505 xferfunc = hwif->output_data;
507 xferfunc = hwif->input_data;
510 xferfunc(drive, NULL, pc->cur_pos, bcount);
512 ide_floppy_io_buffers(drive, pc, bcount,
513 !!(pc->flags & PC_FLAG_WRITING));
515 /* Update the current position */
516 pc->xferred += bcount;
517 pc->cur_pos += bcount;
519 /* And set the interrupt handler again */
520 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
525 * This is the original routine that did the packet transfer.
526 * It fails at high speeds on the Iomega ZIP drive, so there's a slower version
527 * for that drive below. The algorithm is chosen based on drive type
529 static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive)
531 ide_hwif_t *hwif = drive->hwif;
532 ide_startstop_t startstop;
533 idefloppy_floppy_t *floppy = drive->driver_data;
536 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
537 printk(KERN_ERR "ide-floppy: Strange, packet command "
538 "initiated yet DRQ isn't asserted\n");
541 ireason = hwif->INB(hwif->io_ports.nsect_addr);
542 if ((ireason & CD) == 0 || (ireason & IO)) {
543 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while "
544 "issuing a packet command\n");
545 return ide_do_reset(drive);
548 /* Set the interrupt routine */
549 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
551 /* Send the actual packet */
552 hwif->output_data(drive, NULL, floppy->pc->c, 12);
559 * What we have here is a classic case of a top half / bottom half interrupt
560 * service routine. In interrupt mode, the device sends an interrupt to signal
561 * that it is ready to receive a packet. However, we need to delay about 2-3
562 * ticks before issuing the packet or we gets in trouble.
564 * So, follow carefully. transfer_pc1 is called as an interrupt (or directly).
565 * In either case, when the device says it's ready for a packet, we schedule
566 * the packet transfer to occur about 2-3 ticks later in transfer_pc2.
568 static int idefloppy_transfer_pc2(ide_drive_t *drive)
570 idefloppy_floppy_t *floppy = drive->driver_data;
572 /* Send the actual packet */
573 drive->hwif->output_data(drive, NULL, floppy->pc->c, 12);
575 /* Timeout for the packet command */
576 return IDEFLOPPY_WAIT_CMD;
579 static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive)
581 ide_hwif_t *hwif = drive->hwif;
582 idefloppy_floppy_t *floppy = drive->driver_data;
583 ide_startstop_t startstop;
586 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
587 printk(KERN_ERR "ide-floppy: Strange, packet command "
588 "initiated yet DRQ isn't asserted\n");
591 ireason = hwif->INB(hwif->io_ports.nsect_addr);
592 if ((ireason & CD) == 0 || (ireason & IO)) {
593 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) "
594 "while issuing a packet command\n");
595 return ide_do_reset(drive);
598 * The following delay solves a problem with ATAPI Zip 100 drives
599 * where the Busy flag was apparently being deasserted before the
600 * unit was ready to receive data. This was happening on a
601 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
602 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
603 * used until after the packet is moved in about 50 msec.
606 ide_set_handler(drive, &idefloppy_pc_intr, floppy->ticks,
607 &idefloppy_transfer_pc2);
611 static void ide_floppy_report_error(idefloppy_floppy_t *floppy,
612 struct ide_atapi_pc *pc)
614 /* supress error messages resulting from Medium not present */
615 if (floppy->sense_key == 0x02 &&
616 floppy->asc == 0x3a &&
617 floppy->ascq == 0x00)
620 printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
621 "asc = %2x, ascq = %2x\n",
622 floppy->drive->name, pc->c[0], floppy->sense_key,
623 floppy->asc, floppy->ascq);
627 static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
628 struct ide_atapi_pc *pc)
630 idefloppy_floppy_t *floppy = drive->driver_data;
631 ide_hwif_t *hwif = drive->hwif;
632 ide_handler_t *pkt_xfer_routine;
636 if (floppy->failed_pc == NULL &&
637 pc->c[0] != GPCMD_REQUEST_SENSE)
638 floppy->failed_pc = pc;
639 /* Set the current packet command */
642 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
643 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
644 ide_floppy_report_error(floppy, pc);
646 pc->error = IDEFLOPPY_ERROR_GENERAL;
648 floppy->failed_pc = NULL;
649 pc->idefloppy_callback(drive);
653 debug_log("Retry number - %d\n", pc->retries);
656 /* We haven't transferred any data yet */
658 pc->cur_pos = pc->buf;
659 bcount = min(pc->req_xfer, 63 * 1024);
661 if (pc->flags & PC_FLAG_DMA_ERROR) {
662 pc->flags &= ~PC_FLAG_DMA_ERROR;
667 if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma)
668 dma = !hwif->dma_ops->dma_setup(drive);
670 ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
671 IDE_TFLAG_OUT_DEVICE, bcount, dma);
674 /* Begin DMA, if necessary */
675 pc->flags |= PC_FLAG_DMA_IN_PROGRESS;
676 hwif->dma_ops->dma_start(drive);
679 /* Can we transfer the packet when we get the interrupt or wait? */
680 if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) {
682 pkt_xfer_routine = &idefloppy_transfer_pc1;
685 pkt_xfer_routine = &idefloppy_transfer_pc;
688 if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) {
689 /* Issue the packet command */
690 ide_execute_command(drive, WIN_PACKETCMD,
696 /* Issue the packet command */
697 ide_execute_pkt_cmd(drive);
698 return (*pkt_xfer_routine) (drive);
702 static void idefloppy_rw_callback(ide_drive_t *drive)
704 debug_log("Reached %s\n", __func__);
706 idefloppy_end_request(drive, 1, 0);
710 static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent)
712 debug_log("creating prevent removal command, prevent = %d\n", prevent);
714 idefloppy_init_pc(pc);
715 pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
719 static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
721 idefloppy_init_pc(pc);
722 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
728 static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b,
731 idefloppy_init_pc(pc);
732 pc->c[0] = GPCMD_FORMAT_UNIT;
735 memset(pc->buf, 0, 12);
737 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
739 if (flags & 1) /* Verify bit on... */
740 pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */
743 put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4]));
744 put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8]));
746 pc->flags |= PC_FLAG_WRITING;
749 /* A mode sense command is used to "sense" floppy parameters. */
750 static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc,
751 u8 page_code, u8 type)
753 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
755 idefloppy_init_pc(pc);
756 pc->c[0] = GPCMD_MODE_SENSE_10;
758 pc->c[2] = page_code + (type << 6);
761 case IDEFLOPPY_CAPABILITIES_PAGE:
764 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
768 printk(KERN_ERR "ide-floppy: unsupported page code "
769 "in create_mode_sense_cmd\n");
771 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
772 pc->req_xfer = length;
775 static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start)
777 idefloppy_init_pc(pc);
778 pc->c[0] = GPCMD_START_STOP_UNIT;
782 static void idefloppy_create_test_unit_ready_cmd(struct ide_atapi_pc *pc)
784 idefloppy_init_pc(pc);
785 pc->c[0] = GPCMD_TEST_UNIT_READY;
788 static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy,
789 struct ide_atapi_pc *pc, struct request *rq,
790 unsigned long sector)
792 int block = sector / floppy->bs_factor;
793 int blocks = rq->nr_sectors / floppy->bs_factor;
794 int cmd = rq_data_dir(rq);
796 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
799 idefloppy_init_pc(pc);
800 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
801 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
802 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
804 pc->idefloppy_callback = &idefloppy_rw_callback;
806 pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
807 if (rq->cmd_flags & REQ_RW)
808 pc->flags |= PC_FLAG_WRITING;
810 pc->req_xfer = pc->buf_size = blocks * floppy->block_size;
811 pc->flags |= PC_FLAG_DMA_RECOMMENDED;
814 static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
815 struct ide_atapi_pc *pc, struct request *rq)
817 idefloppy_init_pc(pc);
818 pc->idefloppy_callback = &idefloppy_rw_callback;
819 memcpy(pc->c, rq->cmd, sizeof(pc->c));
821 pc->b_count = rq->data_len;
822 if (rq->data_len && rq_data_dir(rq) == WRITE)
823 pc->flags |= PC_FLAG_WRITING;
826 pc->flags |= PC_FLAG_DMA_RECOMMENDED;
828 * possibly problematic, doesn't look like ide-floppy correctly
829 * handled scattered requests if dma fails...
831 pc->req_xfer = pc->buf_size = rq->data_len;
834 static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
835 struct request *rq, sector_t block_s)
837 idefloppy_floppy_t *floppy = drive->driver_data;
838 struct ide_atapi_pc *pc;
839 unsigned long block = (unsigned long)block_s;
841 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
842 rq->rq_disk ? rq->rq_disk->disk_name : "?",
843 rq->cmd_type, rq->errors);
844 debug_log("sector: %ld, nr_sectors: %ld, "
845 "current_nr_sectors: %d\n", (long)rq->sector,
846 rq->nr_sectors, rq->current_nr_sectors);
848 if (rq->errors >= ERROR_MAX) {
849 if (floppy->failed_pc)
850 ide_floppy_report_error(floppy, floppy->failed_pc);
852 printk(KERN_ERR "ide-floppy: %s: I/O error\n",
854 idefloppy_end_request(drive, 0, 0);
857 if (blk_fs_request(rq)) {
858 if (((long)rq->sector % floppy->bs_factor) ||
859 (rq->nr_sectors % floppy->bs_factor)) {
860 printk(KERN_ERR "%s: unsupported r/w request size\n",
862 idefloppy_end_request(drive, 0, 0);
865 pc = idefloppy_next_pc_storage(drive);
866 idefloppy_create_rw_cmd(floppy, pc, rq, block);
867 } else if (blk_special_request(rq)) {
868 pc = (struct ide_atapi_pc *) rq->buffer;
869 } else if (blk_pc_request(rq)) {
870 pc = idefloppy_next_pc_storage(drive);
871 idefloppy_blockpc_cmd(floppy, pc, rq);
873 blk_dump_rq_flags(rq,
874 "ide-floppy: unsupported command in queue");
875 idefloppy_end_request(drive, 0, 0);
880 return idefloppy_issue_pc(drive, pc);
884 * Add a special packet command request to the tail of the request queue,
885 * and wait for it to be serviced.
887 static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc)
889 struct ide_floppy_obj *floppy = drive->driver_data;
893 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
894 rq->buffer = (char *) pc;
895 rq->cmd_type = REQ_TYPE_SPECIAL;
896 error = blk_execute_rq(drive->queue, floppy->disk, rq, 0);
903 * Look at the flexible disk page parameters. We ignore the CHS capacity
904 * parameters and use the LBA parameters instead.
906 static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive)
908 idefloppy_floppy_t *floppy = drive->driver_data;
909 struct ide_atapi_pc pc;
911 int capacity, lba_capacity;
912 u16 transfer_rate, sector_size, cyls, rpm;
915 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE,
918 if (idefloppy_queue_pc_tail(drive, &pc)) {
919 printk(KERN_ERR "ide-floppy: Can't get flexible disk page"
923 floppy->wp = !!(pc.buf[3] & 0x80);
924 set_disk_ro(floppy->disk, floppy->wp);
927 transfer_rate = be16_to_cpu(*(u16 *)&pc.buf[8 + 2]);
928 sector_size = be16_to_cpu(*(u16 *)&pc.buf[8 + 6]);
929 cyls = be16_to_cpu(*(u16 *)&pc.buf[8 + 8]);
930 rpm = be16_to_cpu(*(u16 *)&pc.buf[8 + 28]);
931 heads = pc.buf[8 + 4];
932 sectors = pc.buf[8 + 5];
934 capacity = cyls * heads * sectors * sector_size;
936 if (memcmp(page, &floppy->flexible_disk_page, 32))
937 printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, "
938 "%d sector size, %d rpm\n",
939 drive->name, capacity / 1024, cyls, heads,
940 sectors, transfer_rate / 8, sector_size, rpm);
942 memcpy(&floppy->flexible_disk_page, page, 32);
943 drive->bios_cyl = cyls;
944 drive->bios_head = heads;
945 drive->bios_sect = sectors;
946 lba_capacity = floppy->blocks * floppy->block_size;
948 if (capacity < lba_capacity) {
949 printk(KERN_NOTICE "%s: The disk reports a capacity of %d "
950 "bytes, but the drive only handles %d\n",
951 drive->name, lba_capacity, capacity);
952 floppy->blocks = floppy->block_size ?
953 capacity / floppy->block_size : 0;
958 static int idefloppy_get_sfrp_bit(ide_drive_t *drive)
960 idefloppy_floppy_t *floppy = drive->driver_data;
961 struct ide_atapi_pc pc;
964 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE,
967 pc.flags |= PC_FLAG_SUPPRESS_ERROR;
968 if (idefloppy_queue_pc_tail(drive, &pc))
971 floppy->srfp = pc.buf[8 + 2] & 0x40;
976 * Determine if a media is present in the floppy drive, and if so, its LBA
979 static int ide_floppy_get_capacity(ide_drive_t *drive)
981 idefloppy_floppy_t *floppy = drive->driver_data;
982 struct ide_atapi_pc pc;
984 u8 header_len, desc_cnt;
985 int i, rc = 1, blocks, length;
988 drive->bios_head = drive->bios_sect = 0;
990 floppy->bs_factor = 1;
991 set_capacity(floppy->disk, 0);
993 idefloppy_create_read_capacity_cmd(&pc);
994 if (idefloppy_queue_pc_tail(drive, &pc)) {
995 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
998 header_len = pc.buf[3];
999 cap_desc = &pc.buf[4];
1000 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
1002 for (i = 0; i < desc_cnt; i++) {
1003 unsigned int desc_start = 4 + i*8;
1005 blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]);
1006 length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]);
1008 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
1009 i, blocks * length / 1024, blocks, length);
1014 * the code below is valid only for the 1st descriptor, ie i=0
1017 switch (pc.buf[desc_start + 4] & 0x03) {
1018 /* Clik! drive returns this instead of CAPACITY_CURRENT */
1019 case CAPACITY_UNFORMATTED:
1020 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
1022 * If it is not a clik drive, break out
1023 * (maintains previous driver behaviour)
1026 case CAPACITY_CURRENT:
1027 /* Normal Zip/LS-120 disks */
1028 if (memcmp(cap_desc, &floppy->cap_desc, 8))
1029 printk(KERN_INFO "%s: %dkB, %d blocks, %d "
1030 "sector size\n", drive->name,
1031 blocks * length / 1024, blocks, length);
1032 memcpy(&floppy->cap_desc, cap_desc, 8);
1034 if (!length || length % 512) {
1035 printk(KERN_NOTICE "%s: %d bytes block size "
1036 "not supported\n", drive->name, length);
1038 floppy->blocks = blocks;
1039 floppy->block_size = length;
1040 floppy->bs_factor = length / 512;
1041 if (floppy->bs_factor != 1)
1042 printk(KERN_NOTICE "%s: warning: non "
1043 "512 bytes block size not "
1044 "fully supported\n",
1049 case CAPACITY_NO_CARTRIDGE:
1051 * This is a KERN_ERR so it appears on screen
1052 * for the user to see
1054 printk(KERN_ERR "%s: No disk in drive\n", drive->name);
1056 case CAPACITY_INVALID:
1057 printk(KERN_ERR "%s: Invalid capacity for disk "
1058 "in drive\n", drive->name);
1061 debug_log("Descriptor 0 Code: %d\n",
1062 pc.buf[desc_start + 4] & 0x03);
1065 /* Clik! disk does not support get_flexible_disk_page */
1066 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
1067 (void) ide_floppy_get_flexible_disk_page(drive);
1069 set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
1074 * Obtain the list of formattable capacities.
1075 * Very similar to ide_floppy_get_capacity, except that we push the capacity
1076 * descriptors to userland, instead of our own structures.
1078 * Userland gives us the following structure:
1080 * struct idefloppy_format_capacities {
1088 * userland initializes nformats to the number of allocated formats[] records.
1089 * On exit we set nformats to the number of records we've actually initialized.
1092 static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
1094 struct ide_atapi_pc pc;
1095 u8 header_len, desc_cnt;
1096 int i, blocks, length, u_array_size, u_index;
1099 if (get_user(u_array_size, arg))
1102 if (u_array_size <= 0)
1105 idefloppy_create_read_capacity_cmd(&pc);
1106 if (idefloppy_queue_pc_tail(drive, &pc)) {
1107 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1110 header_len = pc.buf[3];
1111 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
1117 * We always skip the first capacity descriptor. That's the current
1118 * capacity. We are interested in the remaining descriptors, the
1119 * formattable capacities.
1121 for (i = 1; i < desc_cnt; i++) {
1122 unsigned int desc_start = 4 + i*8;
1124 if (u_index >= u_array_size)
1125 break; /* User-supplied buffer too small */
1127 blocks = be32_to_cpu(*(u32 *)&pc.buf[desc_start]);
1128 length = be16_to_cpu(*(u16 *)&pc.buf[desc_start + 6]);
1130 if (put_user(blocks, argp))
1134 if (put_user(length, argp))
1141 if (put_user(u_index, arg))
1147 * Get ATAPI_FORMAT_UNIT progress indication.
1149 * Userland gives a pointer to an int. The int is set to a progress
1150 * indicator 0-65536, with 65536=100%.
1152 * If the drive does not support format progress indication, we just check
1153 * the dsc bit, and return either 0 or 65536.
1156 static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg)
1158 idefloppy_floppy_t *floppy = drive->driver_data;
1159 struct ide_atapi_pc pc;
1160 int progress_indication = 0x10000;
1163 idefloppy_create_request_sense_cmd(&pc);
1164 if (idefloppy_queue_pc_tail(drive, &pc))
1167 if (floppy->sense_key == 2 &&
1170 progress_indication = floppy->progress_indication;
1172 /* Else assume format_unit has finished, and we're at 0x10000 */
1174 unsigned long flags;
1177 local_irq_save(flags);
1178 stat = ide_read_status(drive);
1179 local_irq_restore(flags);
1181 progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000;
1183 if (put_user(progress_indication, arg))
1189 static sector_t idefloppy_capacity(ide_drive_t *drive)
1191 idefloppy_floppy_t *floppy = drive->driver_data;
1192 unsigned long capacity = floppy->blocks * floppy->bs_factor;
1198 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
1201 static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id)
1204 u8 device_type, protocol, removable, drq_type, packet_size;
1206 *((u16 *) &gcw) = id->config;
1208 device_type = gcw[1] & 0x1F;
1209 removable = (gcw[0] & 0x80) >> 7;
1210 protocol = (gcw[1] & 0xC0) >> 6;
1211 drq_type = (gcw[0] & 0x60) >> 5;
1212 packet_size = gcw[0] & 0x03;
1215 /* kludge for Apple PowerBook internal zip */
1216 if (device_type == 5 &&
1217 !strstr(id->model, "CD-ROM") && strstr(id->model, "ZIP"))
1222 printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1224 else if (device_type != 0)
1225 printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set "
1226 "to floppy\n", device_type);
1227 else if (!removable)
1228 printk(KERN_ERR "ide-floppy: The removable flag is not set\n");
1229 else if (drq_type == 3)
1230 printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not "
1231 "supported\n", drq_type);
1232 else if (packet_size != 0)
1233 printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 "
1234 "bytes\n", packet_size);
1240 #ifdef CONFIG_IDE_PROC_FS
1241 static void idefloppy_add_settings(ide_drive_t *drive)
1243 idefloppy_floppy_t *floppy = drive->driver_data;
1245 ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1,
1246 &drive->bios_cyl, NULL);
1247 ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
1248 &drive->bios_head, NULL);
1249 ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1,
1250 &drive->bios_sect, NULL);
1251 ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
1252 &floppy->ticks, NULL);
1255 static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
1258 static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
1262 *((u16 *) &gcw) = drive->id->config;
1263 floppy->pc = floppy->pc_stack;
1265 if (((gcw[0] & 0x60) >> 5) == 1)
1266 floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT;
1268 * We used to check revisions here. At this point however I'm giving up.
1269 * Just assume they are all broken, its easier.
1271 * The actual reason for the workarounds was likely a driver bug after
1272 * all rather than a firmware bug, and the workaround below used to hide
1273 * it. It should be fixed as of version 1.9, but to be on the safe side
1274 * we'll leave the limitation below for the 2.2.x tree.
1276 if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
1277 floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE;
1278 /* This value will be visible in the /proc/ide/hdx/settings */
1279 floppy->ticks = IDEFLOPPY_TICKS_DELAY;
1280 blk_queue_max_sectors(drive->queue, 64);
1284 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1285 * nasty clicking noises without it, so please don't remove this.
1287 if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
1288 blk_queue_max_sectors(drive->queue, 64);
1289 floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE;
1292 (void) ide_floppy_get_capacity(drive);
1293 idefloppy_add_settings(drive);
1296 static void ide_floppy_remove(ide_drive_t *drive)
1298 idefloppy_floppy_t *floppy = drive->driver_data;
1299 struct gendisk *g = floppy->disk;
1301 ide_proc_unregister_driver(drive, floppy->driver);
1305 ide_floppy_put(floppy);
1308 static void idefloppy_cleanup_obj(struct kref *kref)
1310 struct ide_floppy_obj *floppy = to_ide_floppy(kref);
1311 ide_drive_t *drive = floppy->drive;
1312 struct gendisk *g = floppy->disk;
1314 drive->driver_data = NULL;
1315 g->private_data = NULL;
1320 #ifdef CONFIG_IDE_PROC_FS
1321 static int proc_idefloppy_read_capacity(char *page, char **start, off_t off,
1322 int count, int *eof, void *data)
1324 ide_drive_t*drive = (ide_drive_t *)data;
1327 len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive));
1328 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1331 static ide_proc_entry_t idefloppy_proc[] = {
1332 { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL },
1333 { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
1334 { NULL, 0, NULL, NULL }
1336 #endif /* CONFIG_IDE_PROC_FS */
1338 static int ide_floppy_probe(ide_drive_t *);
1340 static ide_driver_t idefloppy_driver = {
1342 .owner = THIS_MODULE,
1343 .name = "ide-floppy",
1344 .bus = &ide_bus_type,
1346 .probe = ide_floppy_probe,
1347 .remove = ide_floppy_remove,
1348 .version = IDEFLOPPY_VERSION,
1349 .media = ide_floppy,
1350 .supports_dsc_overlap = 0,
1351 .do_request = idefloppy_do_request,
1352 .end_request = idefloppy_end_request,
1353 .error = __ide_error,
1354 .abort = __ide_abort,
1355 #ifdef CONFIG_IDE_PROC_FS
1356 .proc = idefloppy_proc,
1360 static int idefloppy_open(struct inode *inode, struct file *filp)
1362 struct gendisk *disk = inode->i_bdev->bd_disk;
1363 struct ide_floppy_obj *floppy;
1365 struct ide_atapi_pc pc;
1368 debug_log("Reached %s\n", __func__);
1370 floppy = ide_floppy_get(disk);
1374 drive = floppy->drive;
1378 if (floppy->openers == 1) {
1379 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1382 idefloppy_create_test_unit_ready_cmd(&pc);
1383 if (idefloppy_queue_pc_tail(drive, &pc)) {
1384 idefloppy_create_start_stop_cmd(&pc, 1);
1385 (void) idefloppy_queue_pc_tail(drive, &pc);
1388 if (ide_floppy_get_capacity(drive)
1389 && (filp->f_flags & O_NDELAY) == 0
1391 * Allow O_NDELAY to open a drive without a disk, or with an
1392 * unreadable disk, so that we can get the format capacity
1393 * of the drive or begin the format - Sam
1397 goto out_put_floppy;
1400 if (floppy->wp && (filp->f_mode & 2)) {
1402 goto out_put_floppy;
1404 floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED;
1405 /* IOMEGA Clik! drives do not support lock/unlock commands */
1406 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1407 idefloppy_create_prevent_cmd(&pc, 1);
1408 (void) idefloppy_queue_pc_tail(drive, &pc);
1410 check_disk_change(inode->i_bdev);
1411 } else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) {
1413 goto out_put_floppy;
1419 ide_floppy_put(floppy);
1423 static int idefloppy_release(struct inode *inode, struct file *filp)
1425 struct gendisk *disk = inode->i_bdev->bd_disk;
1426 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1427 ide_drive_t *drive = floppy->drive;
1428 struct ide_atapi_pc pc;
1430 debug_log("Reached %s\n", __func__);
1432 if (floppy->openers == 1) {
1433 /* IOMEGA Clik! drives do not support lock/unlock commands */
1434 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1435 idefloppy_create_prevent_cmd(&pc, 0);
1436 (void) idefloppy_queue_pc_tail(drive, &pc);
1439 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1444 ide_floppy_put(floppy);
1449 static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
1451 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1452 ide_drive_t *drive = floppy->drive;
1454 geo->heads = drive->bios_head;
1455 geo->sectors = drive->bios_sect;
1456 geo->cylinders = (u16)drive->bios_cyl; /* truncate */
1460 static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy,
1461 struct ide_atapi_pc *pc, unsigned long arg, unsigned int cmd)
1463 if (floppy->openers > 1)
1466 /* The IOMEGA Clik! Drive doesn't support this command -
1467 * no room for an eject mechanism */
1468 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1469 int prevent = arg ? 1 : 0;
1471 if (cmd == CDROMEJECT)
1474 idefloppy_create_prevent_cmd(pc, prevent);
1475 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1478 if (cmd == CDROMEJECT) {
1479 idefloppy_create_start_stop_cmd(pc, 2);
1480 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1486 static int ide_floppy_format_unit(idefloppy_floppy_t *floppy,
1489 int blocks, length, flags, err = 0;
1490 struct ide_atapi_pc pc;
1492 if (floppy->openers > 1) {
1493 /* Don't format if someone is using the disk */
1494 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1498 floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1501 * Send ATAPI_FORMAT_UNIT to the drive.
1503 * Userland gives us the following structure:
1505 * struct idefloppy_format_command {
1511 * flags is a bitmask, currently, the only defined flag is:
1513 * 0x01 - verify media after format.
1515 if (get_user(blocks, arg) ||
1516 get_user(length, arg+1) ||
1517 get_user(flags, arg+2)) {
1522 (void) idefloppy_get_sfrp_bit(floppy->drive);
1523 idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
1525 if (idefloppy_queue_pc_tail(floppy->drive, &pc))
1530 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1535 static int idefloppy_ioctl(struct inode *inode, struct file *file,
1536 unsigned int cmd, unsigned long arg)
1538 struct block_device *bdev = inode->i_bdev;
1539 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1540 ide_drive_t *drive = floppy->drive;
1541 struct ide_atapi_pc pc;
1542 void __user *argp = (void __user *)arg;
1548 case CDROM_LOCKDOOR:
1549 return ide_floppy_lockdoor(floppy, &pc, arg, cmd);
1550 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
1552 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
1553 return ide_floppy_get_format_capacities(drive, argp);
1554 case IDEFLOPPY_IOCTL_FORMAT_START:
1555 if (!(file->f_mode & 2))
1558 return ide_floppy_format_unit(floppy, (int __user *)arg);
1559 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
1560 return idefloppy_get_format_progress(drive, argp);
1564 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1565 * and CDROM_SEND_PACKET (legacy) ioctls
1567 if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
1568 err = scsi_cmd_ioctl(file, bdev->bd_disk->queue,
1569 bdev->bd_disk, cmd, argp);
1574 err = generic_ide_ioctl(drive, file, bdev, cmd, arg);
1579 static int idefloppy_media_changed(struct gendisk *disk)
1581 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1582 ide_drive_t *drive = floppy->drive;
1585 /* do not scan partitions twice if this is a removable device */
1586 if (drive->attach) {
1590 ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED);
1591 floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED;
1595 static int idefloppy_revalidate_disk(struct gendisk *disk)
1597 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1598 set_capacity(disk, idefloppy_capacity(floppy->drive));
1602 static struct block_device_operations idefloppy_ops = {
1603 .owner = THIS_MODULE,
1604 .open = idefloppy_open,
1605 .release = idefloppy_release,
1606 .ioctl = idefloppy_ioctl,
1607 .getgeo = idefloppy_getgeo,
1608 .media_changed = idefloppy_media_changed,
1609 .revalidate_disk = idefloppy_revalidate_disk
1612 static int ide_floppy_probe(ide_drive_t *drive)
1614 idefloppy_floppy_t *floppy;
1617 if (!strstr("ide-floppy", drive->driver_req))
1619 if (!drive->present)
1621 if (drive->media != ide_floppy)
1623 if (!idefloppy_identify_device(drive, drive->id)) {
1624 printk(KERN_ERR "ide-floppy: %s: not supported by this version"
1625 " of ide-floppy\n", drive->name);
1629 printk(KERN_INFO "ide-floppy: passing drive %s to ide-scsi"
1630 " emulation.\n", drive->name);
1633 floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL);
1635 printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy"
1636 " structure\n", drive->name);
1640 g = alloc_disk(1 << PARTN_BITS);
1642 goto out_free_floppy;
1644 ide_init_disk(g, drive);
1646 ide_proc_register_driver(drive, &idefloppy_driver);
1648 kref_init(&floppy->kref);
1650 floppy->drive = drive;
1651 floppy->driver = &idefloppy_driver;
1654 g->private_data = &floppy->driver;
1656 drive->driver_data = floppy;
1658 idefloppy_setup(drive, floppy);
1660 g->minors = 1 << PARTN_BITS;
1661 g->driverfs_dev = &drive->gendev;
1662 g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
1663 g->fops = &idefloppy_ops;
1674 static void __exit idefloppy_exit(void)
1676 driver_unregister(&idefloppy_driver.gen_driver);
1679 static int __init idefloppy_init(void)
1681 printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
1682 return driver_register(&idefloppy_driver.gen_driver);
1685 MODULE_ALIAS("ide:*m-floppy*");
1686 module_init(idefloppy_init);
1687 module_exit(idefloppy_exit);
1688 MODULE_LICENSE("GPL");
1689 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");