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 typedef struct idefloppy_packet_command_s {
82 u8 c[12]; /* Actual packet bytes */
83 int retries; /* On each retry, we increment
85 int error; /* Error code */
86 int request_transfer; /* Bytes to transfer */
87 int actually_transferred; /* Bytes actually transferred */
88 int buffer_size; /* Size of our data buffer */
89 int b_count; /* Missing/Available data on
91 struct request *rq; /* The corresponding request */
92 u8 *buffer; /* Data buffer */
93 u8 *current_position; /* Pointer into above buffer */
94 void (*callback) (ide_drive_t *); /* Called when this packet
95 command is completed */
96 u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */
97 unsigned long flags; /* Status/Action bit flags: long
101 /* Packet command flag bits. */
103 /* 1 when we prefer to use DMA if possible */
104 PC_FLAG_DMA_RECOMMENDED = (1 << 0),
105 /* 1 while DMA in progress */
106 PC_FLAG_DMA_IN_PROGRESS = (1 << 1),
107 /* 1 when encountered problem during DMA */
108 PC_FLAG_DMA_ERROR = (1 << 2),
110 PC_FLAG_WRITING = (1 << 3),
111 /* Suppress error reporting */
112 PC_FLAG_SUPPRESS_ERROR = (1 << 4),
115 /* format capacities descriptor codes */
116 #define CAPACITY_INVALID 0x00
117 #define CAPACITY_UNFORMATTED 0x01
118 #define CAPACITY_CURRENT 0x02
119 #define CAPACITY_NO_CARTRIDGE 0x03
122 * Most of our global data which we need to save even as we leave the driver
123 * due to an interrupt or a timer event is stored in a variable of type
124 * idefloppy_floppy_t, defined below.
126 typedef struct ide_floppy_obj {
128 ide_driver_t *driver;
129 struct gendisk *disk;
131 unsigned int openers; /* protected by BKL for now */
133 /* Current packet command */
135 /* Last failed packet command */
136 idefloppy_pc_t *failed_pc;
137 /* Packet command stack */
138 idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK];
139 /* Next free packet command storage space */
141 struct request rq_stack[IDEFLOPPY_PC_STACK];
142 /* We implement a circular array */
145 /* Last error information */
146 u8 sense_key, asc, ascq;
147 /* delay this long before sending packet command */
149 int progress_indication;
151 /* Device information */
153 int blocks, block_size, bs_factor;
154 /* Last format capacity descriptor */
156 /* Copy of the flexible disk page */
157 u8 flexible_disk_page[32];
160 /* Supports format progress report */
162 /* Status/Action flags */
164 } idefloppy_floppy_t;
166 #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
168 /* Floppy flag bits values. */
170 /* DRQ interrupt device */
171 IDEFLOPPY_FLAG_DRQ_INTERRUPT = (1 << 0),
172 /* Media may have changed */
173 IDEFLOPPY_FLAG_MEDIA_CHANGED = (1 << 1),
174 /* Format in progress */
175 IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS = (1 << 2),
176 /* Avoid commands not supported in Clik drive */
177 IDEFLOPPY_FLAG_CLIK_DRIVE = (1 << 3),
178 /* Requires BH algorithm for packets */
179 IDEFLOPPY_FLAG_ZIP_DRIVE = (1 << 4),
182 /* Defines for the MODE SENSE command */
183 #define MODE_SENSE_CURRENT 0x00
184 #define MODE_SENSE_CHANGEABLE 0x01
185 #define MODE_SENSE_DEFAULT 0x02
186 #define MODE_SENSE_SAVED 0x03
188 /* IOCTLs used in low-level formatting. */
189 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
190 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
191 #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
192 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
194 /* Error code returned in rq->errors to the higher part of the driver. */
195 #define IDEFLOPPY_ERROR_GENERAL 101
198 * Pages of the SELECT SENSE / MODE SENSE packet commands.
199 * See SFF-8070i spec.
201 #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
202 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
204 static DEFINE_MUTEX(idefloppy_ref_mutex);
206 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
208 #define ide_floppy_g(disk) \
209 container_of((disk)->private_data, struct ide_floppy_obj, driver)
211 static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk)
213 struct ide_floppy_obj *floppy = NULL;
215 mutex_lock(&idefloppy_ref_mutex);
216 floppy = ide_floppy_g(disk);
218 kref_get(&floppy->kref);
219 mutex_unlock(&idefloppy_ref_mutex);
223 static void idefloppy_cleanup_obj(struct kref *);
225 static void ide_floppy_put(struct ide_floppy_obj *floppy)
227 mutex_lock(&idefloppy_ref_mutex);
228 kref_put(&floppy->kref, idefloppy_cleanup_obj);
229 mutex_unlock(&idefloppy_ref_mutex);
233 * Used to finish servicing a request. For read/write requests, we will call
234 * ide_end_request to pass to the next buffer.
236 static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs)
238 idefloppy_floppy_t *floppy = drive->driver_data;
239 struct request *rq = HWGROUP(drive)->rq;
242 debug_log("Reached %s\n", __func__);
245 case 0: error = IDEFLOPPY_ERROR_GENERAL; break;
246 case 1: error = 0; break;
247 default: error = uptodate;
250 floppy->failed_pc = NULL;
251 /* Why does this happen? */
254 if (!blk_special_request(rq)) {
255 /* our real local end request function */
256 ide_end_request(drive, uptodate, nsecs);
260 /* fixme: need to move this local also */
261 ide_end_drive_cmd(drive, 0, 0);
265 static void ide_floppy_io_buffers(ide_drive_t *drive, idefloppy_pc_t *pc,
266 unsigned int bcount, int direction)
268 struct request *rq = pc->rq;
269 struct req_iterator iter;
270 struct bio_vec *bvec;
275 rq_for_each_segment(bvec, rq, iter) {
279 count = min(bvec->bv_len, bcount);
281 data = bvec_kmap_irq(bvec, &flags);
283 drive->hwif->atapi_output_bytes(drive, data, count);
285 drive->hwif->atapi_input_bytes(drive, data, count);
286 bvec_kunmap_irq(data, &flags);
289 pc->b_count += count;
293 idefloppy_do_end_request(drive, 1, done >> 9);
296 printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n",
297 drive->name, __func__, bcount);
299 ide_atapi_write_zeros(drive, bcount);
301 ide_atapi_discard_data(drive, bcount);
305 static void idefloppy_update_buffers(ide_drive_t *drive, idefloppy_pc_t *pc)
307 struct request *rq = pc->rq;
308 struct bio *bio = rq->bio;
310 while ((bio = rq->bio) != NULL)
311 idefloppy_do_end_request(drive, 1, 0);
315 * Generate a new packet command request in front of the request queue, before
316 * the current request so that it will be processed immediately, on the next
317 * pass through the driver.
319 static void idefloppy_queue_pc_head(ide_drive_t *drive, idefloppy_pc_t *pc,
322 struct ide_floppy_obj *floppy = drive->driver_data;
324 ide_init_drive_cmd(rq);
325 rq->buffer = (char *) pc;
326 rq->cmd_type = REQ_TYPE_SPECIAL;
327 rq->rq_disk = floppy->disk;
328 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
331 static idefloppy_pc_t *idefloppy_next_pc_storage(ide_drive_t *drive)
333 idefloppy_floppy_t *floppy = drive->driver_data;
335 if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK)
336 floppy->pc_stack_index = 0;
337 return (&floppy->pc_stack[floppy->pc_stack_index++]);
340 static struct request *idefloppy_next_rq_storage(ide_drive_t *drive)
342 idefloppy_floppy_t *floppy = drive->driver_data;
344 if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK)
345 floppy->rq_stack_index = 0;
346 return (&floppy->rq_stack[floppy->rq_stack_index++]);
349 static void idefloppy_request_sense_callback(ide_drive_t *drive)
351 idefloppy_floppy_t *floppy = drive->driver_data;
352 u8 *buf = floppy->pc->buffer;
354 debug_log("Reached %s\n", __func__);
356 if (!floppy->pc->error) {
357 floppy->sense_key = buf[2] & 0x0F;
358 floppy->asc = buf[12];
359 floppy->ascq = buf[13];
360 floppy->progress_indication = buf[15] & 0x80 ?
361 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
363 if (floppy->failed_pc)
364 debug_log("pc = %x, sense key = %x, asc = %x,"
366 floppy->failed_pc->c[0],
371 debug_log("sense key = %x, asc = %x, ascq = %x\n",
377 idefloppy_do_end_request(drive, 1, 0);
379 printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting"
381 idefloppy_do_end_request(drive, 0, 0);
385 /* General packet command callback function. */
386 static void idefloppy_pc_callback(ide_drive_t *drive)
388 idefloppy_floppy_t *floppy = drive->driver_data;
390 debug_log("Reached %s\n", __func__);
392 idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0);
395 static void idefloppy_init_pc(idefloppy_pc_t *pc)
397 memset(pc->c, 0, 12);
400 pc->request_transfer = 0;
401 pc->buffer = pc->pc_buffer;
402 pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE;
403 pc->callback = &idefloppy_pc_callback;
406 static void idefloppy_create_request_sense_cmd(idefloppy_pc_t *pc)
408 idefloppy_init_pc(pc);
409 pc->c[0] = GPCMD_REQUEST_SENSE;
411 pc->request_transfer = 18;
412 pc->callback = &idefloppy_request_sense_callback;
416 * Called when an error was detected during the last packet command. We queue a
417 * request sense packet command in the head of the request list.
419 static void idefloppy_retry_pc(ide_drive_t *drive)
424 (void)ide_read_error(drive);
425 pc = idefloppy_next_pc_storage(drive);
426 rq = idefloppy_next_rq_storage(drive);
427 idefloppy_create_request_sense_cmd(pc);
428 idefloppy_queue_pc_head(drive, pc, rq);
431 /* The usual interrupt handler called during a packet command. */
432 static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive)
434 idefloppy_floppy_t *floppy = drive->driver_data;
435 ide_hwif_t *hwif = drive->hwif;
436 idefloppy_pc_t *pc = floppy->pc;
437 struct request *rq = pc->rq;
438 xfer_func_t *xferfunc;
444 debug_log("Reached %s interrupt handler\n", __func__);
446 if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
447 dma_error = hwif->ide_dma_end(drive);
449 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
450 rq_data_dir(rq) ? "write" : "read");
451 pc->flags |= PC_FLAG_DMA_ERROR;
453 pc->actually_transferred = pc->request_transfer;
454 idefloppy_update_buffers(drive, pc);
456 debug_log("DMA finished\n");
459 /* Clear the interrupt */
460 stat = ide_read_status(drive);
462 /* No more interrupts */
463 if ((stat & DRQ_STAT) == 0) {
464 debug_log("Packet command completed, %d bytes transferred\n",
465 pc->actually_transferred);
466 pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
468 local_irq_enable_in_hardirq();
470 if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) {
472 debug_log("%s: I/O error\n", drive->name);
474 if (pc->c[0] == GPCMD_REQUEST_SENSE) {
475 printk(KERN_ERR "ide-floppy: I/O error in "
476 "request sense command\n");
477 return ide_do_reset(drive);
479 /* Retry operation */
480 idefloppy_retry_pc(drive);
481 /* queued, but not started */
485 if (floppy->failed_pc == pc)
486 floppy->failed_pc = NULL;
487 /* Command finished - Call the callback function */
492 if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
493 pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
494 printk(KERN_ERR "ide-floppy: The floppy wants to issue "
495 "more interrupts in DMA mode\n");
497 return ide_do_reset(drive);
500 /* Get the number of bytes to transfer */
501 bcount = (hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]) << 8) |
502 hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]);
503 /* on this interrupt */
504 ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
507 printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__);
508 return ide_do_reset(drive);
510 if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) {
511 /* Hopefully, we will never get here */
512 printk(KERN_ERR "ide-floppy: We wanted to %s, ",
513 (ireason & IO) ? "Write" : "Read");
514 printk(KERN_ERR "but the floppy wants us to %s !\n",
515 (ireason & IO) ? "Read" : "Write");
516 return ide_do_reset(drive);
518 if (!(pc->flags & PC_FLAG_WRITING)) {
519 /* Reading - Check that we have enough space */
520 temp = pc->actually_transferred + bcount;
521 if (temp > pc->request_transfer) {
522 if (temp > pc->buffer_size) {
523 printk(KERN_ERR "ide-floppy: The floppy wants "
524 "to send us more data than expected "
525 "- discarding data\n");
526 ide_atapi_discard_data(drive, bcount);
528 ide_set_handler(drive,
534 debug_log("The floppy wants to send us more data than"
535 " expected - allowing transfer\n");
538 if (pc->flags & PC_FLAG_WRITING)
539 xferfunc = hwif->atapi_output_bytes;
541 xferfunc = hwif->atapi_input_bytes;
544 xferfunc(drive, pc->current_position, bcount);
546 ide_floppy_io_buffers(drive, pc, bcount,
547 !!(pc->flags & PC_FLAG_WRITING));
549 /* Update the current position */
550 pc->actually_transferred += bcount;
551 pc->current_position += bcount;
553 /* And set the interrupt handler again */
554 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
559 * This is the original routine that did the packet transfer.
560 * It fails at high speeds on the Iomega ZIP drive, so there's a slower version
561 * for that drive below. The algorithm is chosen based on drive type
563 static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive)
565 ide_hwif_t *hwif = drive->hwif;
566 ide_startstop_t startstop;
567 idefloppy_floppy_t *floppy = drive->driver_data;
570 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
571 printk(KERN_ERR "ide-floppy: Strange, packet command "
572 "initiated yet DRQ isn't asserted\n");
575 ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
576 if ((ireason & CD) == 0 || (ireason & IO)) {
577 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while "
578 "issuing a packet command\n");
579 return ide_do_reset(drive);
582 /* Set the interrupt routine */
583 ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
584 /* Send the actual packet */
585 HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
591 * What we have here is a classic case of a top half / bottom half interrupt
592 * service routine. In interrupt mode, the device sends an interrupt to signal
593 * that it is ready to receive a packet. However, we need to delay about 2-3
594 * ticks before issuing the packet or we gets in trouble.
596 * So, follow carefully. transfer_pc1 is called as an interrupt (or directly).
597 * In either case, when the device says it's ready for a packet, we schedule
598 * the packet transfer to occur about 2-3 ticks later in transfer_pc2.
600 static int idefloppy_transfer_pc2(ide_drive_t *drive)
602 idefloppy_floppy_t *floppy = drive->driver_data;
604 /* Send the actual packet */
605 HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
606 /* Timeout for the packet command */
607 return IDEFLOPPY_WAIT_CMD;
610 static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive)
612 ide_hwif_t *hwif = drive->hwif;
613 idefloppy_floppy_t *floppy = drive->driver_data;
614 ide_startstop_t startstop;
617 if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
618 printk(KERN_ERR "ide-floppy: Strange, packet command "
619 "initiated yet DRQ isn't asserted\n");
622 ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
623 if ((ireason & CD) == 0 || (ireason & IO)) {
624 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) "
625 "while issuing a packet command\n");
626 return ide_do_reset(drive);
629 * The following delay solves a problem with ATAPI Zip 100 drives
630 * where the Busy flag was apparently being deasserted before the
631 * unit was ready to receive data. This was happening on a
632 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
633 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
634 * used until after the packet is moved in about 50 msec.
637 ide_set_handler(drive, &idefloppy_pc_intr, floppy->ticks,
638 &idefloppy_transfer_pc2);
642 static void ide_floppy_report_error(idefloppy_floppy_t *floppy,
645 /* supress error messages resulting from Medium not present */
646 if (floppy->sense_key == 0x02 &&
647 floppy->asc == 0x3a &&
648 floppy->ascq == 0x00)
651 printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
652 "asc = %2x, ascq = %2x\n",
653 floppy->drive->name, pc->c[0], floppy->sense_key,
654 floppy->asc, floppy->ascq);
658 static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
661 idefloppy_floppy_t *floppy = drive->driver_data;
662 ide_hwif_t *hwif = drive->hwif;
663 ide_handler_t *pkt_xfer_routine;
667 if (floppy->failed_pc == NULL &&
668 pc->c[0] != GPCMD_REQUEST_SENSE)
669 floppy->failed_pc = pc;
670 /* Set the current packet command */
673 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
674 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
675 ide_floppy_report_error(floppy, pc);
677 pc->error = IDEFLOPPY_ERROR_GENERAL;
679 floppy->failed_pc = NULL;
684 debug_log("Retry number - %d\n", pc->retries);
687 /* We haven't transferred any data yet */
688 pc->actually_transferred = 0;
689 pc->current_position = pc->buffer;
690 bcount = min(pc->request_transfer, 63 * 1024);
692 if (pc->flags & PC_FLAG_DMA_ERROR) {
693 pc->flags &= ~PC_FLAG_DMA_ERROR;
698 if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma)
699 dma = !hwif->dma_setup(drive);
701 ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
702 IDE_TFLAG_OUT_DEVICE, bcount, dma);
705 /* Begin DMA, if necessary */
706 pc->flags |= PC_FLAG_DMA_IN_PROGRESS;
707 hwif->dma_start(drive);
710 /* Can we transfer the packet when we get the interrupt or wait? */
711 if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) {
713 pkt_xfer_routine = &idefloppy_transfer_pc1;
716 pkt_xfer_routine = &idefloppy_transfer_pc;
719 if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) {
720 /* Issue the packet command */
721 ide_execute_command(drive, WIN_PACKETCMD,
727 /* Issue the packet command */
728 hwif->OUTB(WIN_PACKETCMD, hwif->io_ports[IDE_COMMAND_OFFSET]);
729 return (*pkt_xfer_routine) (drive);
733 static void idefloppy_rw_callback(ide_drive_t *drive)
735 debug_log("Reached %s\n", __func__);
737 idefloppy_do_end_request(drive, 1, 0);
741 static void idefloppy_create_prevent_cmd(idefloppy_pc_t *pc, int prevent)
743 debug_log("creating prevent removal command, prevent = %d\n", prevent);
745 idefloppy_init_pc(pc);
746 pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
750 static void idefloppy_create_read_capacity_cmd(idefloppy_pc_t *pc)
752 idefloppy_init_pc(pc);
753 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
756 pc->request_transfer = 255;
759 static void idefloppy_create_format_unit_cmd(idefloppy_pc_t *pc, int b, int l,
762 idefloppy_init_pc(pc);
763 pc->c[0] = GPCMD_FORMAT_UNIT;
766 memset(pc->buffer, 0, 12);
767 pc->buffer[1] = 0xA2;
768 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
770 if (flags & 1) /* Verify bit on... */
771 pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */
774 put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buffer[4]));
775 put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buffer[8]));
776 pc->buffer_size = 12;
777 pc->flags |= PC_FLAG_WRITING;
780 /* A mode sense command is used to "sense" floppy parameters. */
781 static void idefloppy_create_mode_sense_cmd(idefloppy_pc_t *pc, u8 page_code,
784 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
786 idefloppy_init_pc(pc);
787 pc->c[0] = GPCMD_MODE_SENSE_10;
789 pc->c[2] = page_code + (type << 6);
792 case IDEFLOPPY_CAPABILITIES_PAGE:
795 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
799 printk(KERN_ERR "ide-floppy: unsupported page code "
800 "in create_mode_sense_cmd\n");
802 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
803 pc->request_transfer = length;
806 static void idefloppy_create_start_stop_cmd(idefloppy_pc_t *pc, int start)
808 idefloppy_init_pc(pc);
809 pc->c[0] = GPCMD_START_STOP_UNIT;
813 static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc)
815 idefloppy_init_pc(pc);
816 pc->c[0] = GPCMD_TEST_UNIT_READY;
819 static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy,
820 idefloppy_pc_t *pc, struct request *rq,
821 unsigned long sector)
823 int block = sector / floppy->bs_factor;
824 int blocks = rq->nr_sectors / floppy->bs_factor;
825 int cmd = rq_data_dir(rq);
827 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
830 idefloppy_init_pc(pc);
831 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
832 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
833 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
835 pc->callback = &idefloppy_rw_callback;
837 pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
838 if (rq->cmd_flags & REQ_RW)
839 pc->flags |= PC_FLAG_WRITING;
841 pc->request_transfer = pc->buffer_size = blocks * floppy->block_size;
842 pc->flags |= PC_FLAG_DMA_RECOMMENDED;
845 static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
846 idefloppy_pc_t *pc, struct request *rq)
848 idefloppy_init_pc(pc);
849 pc->callback = &idefloppy_rw_callback;
850 memcpy(pc->c, rq->cmd, sizeof(pc->c));
852 pc->b_count = rq->data_len;
853 if (rq->data_len && rq_data_dir(rq) == WRITE)
854 pc->flags |= PC_FLAG_WRITING;
855 pc->buffer = rq->data;
857 pc->flags |= PC_FLAG_DMA_RECOMMENDED;
859 * possibly problematic, doesn't look like ide-floppy correctly
860 * handled scattered requests if dma fails...
862 pc->request_transfer = pc->buffer_size = rq->data_len;
865 static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
866 struct request *rq, sector_t block_s)
868 idefloppy_floppy_t *floppy = drive->driver_data;
870 unsigned long block = (unsigned long)block_s;
872 debug_log("dev: %s, cmd_type: %x, errors: %d\n",
873 rq->rq_disk ? rq->rq_disk->disk_name : "?",
874 rq->cmd_type, rq->errors);
875 debug_log("sector: %ld, nr_sectors: %ld, "
876 "current_nr_sectors: %d\n", (long)rq->sector,
877 rq->nr_sectors, rq->current_nr_sectors);
879 if (rq->errors >= ERROR_MAX) {
880 if (floppy->failed_pc)
881 ide_floppy_report_error(floppy, floppy->failed_pc);
883 printk(KERN_ERR "ide-floppy: %s: I/O error\n",
885 idefloppy_do_end_request(drive, 0, 0);
888 if (blk_fs_request(rq)) {
889 if (((long)rq->sector % floppy->bs_factor) ||
890 (rq->nr_sectors % floppy->bs_factor)) {
891 printk(KERN_ERR "%s: unsupported r/w request size\n",
893 idefloppy_do_end_request(drive, 0, 0);
896 pc = idefloppy_next_pc_storage(drive);
897 idefloppy_create_rw_cmd(floppy, pc, rq, block);
898 } else if (blk_special_request(rq)) {
899 pc = (idefloppy_pc_t *) rq->buffer;
900 } else if (blk_pc_request(rq)) {
901 pc = idefloppy_next_pc_storage(drive);
902 idefloppy_blockpc_cmd(floppy, pc, rq);
904 blk_dump_rq_flags(rq,
905 "ide-floppy: unsupported command in queue");
906 idefloppy_do_end_request(drive, 0, 0);
911 return idefloppy_issue_pc(drive, pc);
915 * Add a special packet command request to the tail of the request queue,
916 * and wait for it to be serviced.
918 static int idefloppy_queue_pc_tail(ide_drive_t *drive, idefloppy_pc_t *pc)
920 struct ide_floppy_obj *floppy = drive->driver_data;
923 ide_init_drive_cmd(&rq);
924 rq.buffer = (char *) pc;
925 rq.cmd_type = REQ_TYPE_SPECIAL;
926 rq.rq_disk = floppy->disk;
928 return ide_do_drive_cmd(drive, &rq, ide_wait);
932 * Look at the flexible disk page parameters. We ignore the CHS capacity
933 * parameters and use the LBA parameters instead.
935 static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive)
937 idefloppy_floppy_t *floppy = drive->driver_data;
940 int capacity, lba_capacity;
941 u16 transfer_rate, sector_size, cyls, rpm;
944 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE,
947 if (idefloppy_queue_pc_tail(drive, &pc)) {
948 printk(KERN_ERR "ide-floppy: Can't get flexible disk page"
952 floppy->wp = !!(pc.buffer[3] & 0x80);
953 set_disk_ro(floppy->disk, floppy->wp);
954 page = &pc.buffer[8];
956 transfer_rate = be16_to_cpu(*(u16 *)&pc.buffer[8 + 2]);
957 sector_size = be16_to_cpu(*(u16 *)&pc.buffer[8 + 6]);
958 cyls = be16_to_cpu(*(u16 *)&pc.buffer[8 + 8]);
959 rpm = be16_to_cpu(*(u16 *)&pc.buffer[8 + 28]);
960 heads = pc.buffer[8 + 4];
961 sectors = pc.buffer[8 + 5];
963 capacity = cyls * heads * sectors * sector_size;
965 if (memcmp(page, &floppy->flexible_disk_page, 32))
966 printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, "
967 "%d sector size, %d rpm\n",
968 drive->name, capacity / 1024, cyls, heads,
969 sectors, transfer_rate / 8, sector_size, rpm);
971 memcpy(&floppy->flexible_disk_page, page, 32);
972 drive->bios_cyl = cyls;
973 drive->bios_head = heads;
974 drive->bios_sect = sectors;
975 lba_capacity = floppy->blocks * floppy->block_size;
977 if (capacity < lba_capacity) {
978 printk(KERN_NOTICE "%s: The disk reports a capacity of %d "
979 "bytes, but the drive only handles %d\n",
980 drive->name, lba_capacity, capacity);
981 floppy->blocks = floppy->block_size ?
982 capacity / floppy->block_size : 0;
987 static int idefloppy_get_sfrp_bit(ide_drive_t *drive)
989 idefloppy_floppy_t *floppy = drive->driver_data;
993 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE,
996 pc.flags |= PC_FLAG_SUPPRESS_ERROR;
997 if (idefloppy_queue_pc_tail(drive, &pc))
1000 floppy->srfp = pc.buffer[8 + 2] & 0x40;
1005 * Determine if a media is present in the floppy drive, and if so, its LBA
1008 static int ide_floppy_get_capacity(ide_drive_t *drive)
1010 idefloppy_floppy_t *floppy = drive->driver_data;
1013 u8 header_len, desc_cnt;
1014 int i, rc = 1, blocks, length;
1016 drive->bios_cyl = 0;
1017 drive->bios_head = drive->bios_sect = 0;
1019 floppy->bs_factor = 1;
1020 set_capacity(floppy->disk, 0);
1022 idefloppy_create_read_capacity_cmd(&pc);
1023 if (idefloppy_queue_pc_tail(drive, &pc)) {
1024 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1027 header_len = pc.buffer[3];
1028 cap_desc = &pc.buffer[4];
1029 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
1031 for (i = 0; i < desc_cnt; i++) {
1032 unsigned int desc_start = 4 + i*8;
1034 blocks = be32_to_cpu(*(u32 *)&pc.buffer[desc_start]);
1035 length = be16_to_cpu(*(u16 *)&pc.buffer[desc_start + 6]);
1037 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
1038 i, blocks * length / 1024, blocks, length);
1043 * the code below is valid only for the 1st descriptor, ie i=0
1046 switch (pc.buffer[desc_start + 4] & 0x03) {
1047 /* Clik! drive returns this instead of CAPACITY_CURRENT */
1048 case CAPACITY_UNFORMATTED:
1049 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
1051 * If it is not a clik drive, break out
1052 * (maintains previous driver behaviour)
1055 case CAPACITY_CURRENT:
1056 /* Normal Zip/LS-120 disks */
1057 if (memcmp(cap_desc, &floppy->cap_desc, 8))
1058 printk(KERN_INFO "%s: %dkB, %d blocks, %d "
1059 "sector size\n", drive->name,
1060 blocks * length / 1024, blocks, length);
1061 memcpy(&floppy->cap_desc, cap_desc, 8);
1063 if (!length || length % 512) {
1064 printk(KERN_NOTICE "%s: %d bytes block size "
1065 "not supported\n", drive->name, length);
1067 floppy->blocks = blocks;
1068 floppy->block_size = length;
1069 floppy->bs_factor = length / 512;
1070 if (floppy->bs_factor != 1)
1071 printk(KERN_NOTICE "%s: warning: non "
1072 "512 bytes block size not "
1073 "fully supported\n",
1078 case CAPACITY_NO_CARTRIDGE:
1080 * This is a KERN_ERR so it appears on screen
1081 * for the user to see
1083 printk(KERN_ERR "%s: No disk in drive\n", drive->name);
1085 case CAPACITY_INVALID:
1086 printk(KERN_ERR "%s: Invalid capacity for disk "
1087 "in drive\n", drive->name);
1090 debug_log("Descriptor 0 Code: %d\n",
1091 pc.buffer[desc_start + 4] & 0x03);
1094 /* Clik! disk does not support get_flexible_disk_page */
1095 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
1096 (void) ide_floppy_get_flexible_disk_page(drive);
1098 set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
1103 * Obtain the list of formattable capacities.
1104 * Very similar to ide_floppy_get_capacity, except that we push the capacity
1105 * descriptors to userland, instead of our own structures.
1107 * Userland gives us the following structure:
1109 * struct idefloppy_format_capacities {
1117 * userland initializes nformats to the number of allocated formats[] records.
1118 * On exit we set nformats to the number of records we've actually initialized.
1121 static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
1124 u8 header_len, desc_cnt;
1125 int i, blocks, length, u_array_size, u_index;
1128 if (get_user(u_array_size, arg))
1131 if (u_array_size <= 0)
1134 idefloppy_create_read_capacity_cmd(&pc);
1135 if (idefloppy_queue_pc_tail(drive, &pc)) {
1136 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1139 header_len = pc.buffer[3];
1140 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
1146 * We always skip the first capacity descriptor. That's the current
1147 * capacity. We are interested in the remaining descriptors, the
1148 * formattable capacities.
1150 for (i = 1; i < desc_cnt; i++) {
1151 unsigned int desc_start = 4 + i*8;
1153 if (u_index >= u_array_size)
1154 break; /* User-supplied buffer too small */
1156 blocks = be32_to_cpu(*(u32 *)&pc.buffer[desc_start]);
1157 length = be16_to_cpu(*(u16 *)&pc.buffer[desc_start + 6]);
1159 if (put_user(blocks, argp))
1163 if (put_user(length, argp))
1170 if (put_user(u_index, arg))
1176 * Get ATAPI_FORMAT_UNIT progress indication.
1178 * Userland gives a pointer to an int. The int is set to a progress
1179 * indicator 0-65536, with 65536=100%.
1181 * If the drive does not support format progress indication, we just check
1182 * the dsc bit, and return either 0 or 65536.
1185 static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg)
1187 idefloppy_floppy_t *floppy = drive->driver_data;
1189 int progress_indication = 0x10000;
1192 idefloppy_create_request_sense_cmd(&pc);
1193 if (idefloppy_queue_pc_tail(drive, &pc))
1196 if (floppy->sense_key == 2 &&
1199 progress_indication = floppy->progress_indication;
1201 /* Else assume format_unit has finished, and we're at 0x10000 */
1203 unsigned long flags;
1206 local_irq_save(flags);
1207 stat = ide_read_status(drive);
1208 local_irq_restore(flags);
1210 progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000;
1212 if (put_user(progress_indication, arg))
1218 static sector_t idefloppy_capacity(ide_drive_t *drive)
1220 idefloppy_floppy_t *floppy = drive->driver_data;
1221 unsigned long capacity = floppy->blocks * floppy->bs_factor;
1227 * Check whether we can support a drive, based on the ATAPI IDENTIFY command
1230 static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id)
1233 u8 device_type, protocol, removable, drq_type, packet_size;
1235 *((u16 *) &gcw) = id->config;
1237 device_type = gcw[1] & 0x1F;
1238 removable = (gcw[0] & 0x80) >> 7;
1239 protocol = (gcw[1] & 0xC0) >> 6;
1240 drq_type = (gcw[0] & 0x60) >> 5;
1241 packet_size = gcw[0] & 0x03;
1244 /* kludge for Apple PowerBook internal zip */
1245 if (device_type == 5 &&
1246 !strstr(id->model, "CD-ROM") && strstr(id->model, "ZIP"))
1251 printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n",
1253 else if (device_type != 0)
1254 printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set "
1255 "to floppy\n", device_type);
1256 else if (!removable)
1257 printk(KERN_ERR "ide-floppy: The removable flag is not set\n");
1258 else if (drq_type == 3)
1259 printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not "
1260 "supported\n", drq_type);
1261 else if (packet_size != 0)
1262 printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 "
1263 "bytes\n", packet_size);
1269 #ifdef CONFIG_IDE_PROC_FS
1270 static void idefloppy_add_settings(ide_drive_t *drive)
1272 idefloppy_floppy_t *floppy = drive->driver_data;
1274 ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1,
1275 &drive->bios_cyl, NULL);
1276 ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
1277 &drive->bios_head, NULL);
1278 ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1,
1279 &drive->bios_sect, NULL);
1280 ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1,
1281 &floppy->ticks, NULL);
1284 static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
1287 static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
1291 *((u16 *) &gcw) = drive->id->config;
1292 floppy->pc = floppy->pc_stack;
1294 if (((gcw[0] & 0x60) >> 5) == 1)
1295 floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT;
1297 * We used to check revisions here. At this point however I'm giving up.
1298 * Just assume they are all broken, its easier.
1300 * The actual reason for the workarounds was likely a driver bug after
1301 * all rather than a firmware bug, and the workaround below used to hide
1302 * it. It should be fixed as of version 1.9, but to be on the safe side
1303 * we'll leave the limitation below for the 2.2.x tree.
1305 if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
1306 floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE;
1307 /* This value will be visible in the /proc/ide/hdx/settings */
1308 floppy->ticks = IDEFLOPPY_TICKS_DELAY;
1309 blk_queue_max_sectors(drive->queue, 64);
1313 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1314 * nasty clicking noises without it, so please don't remove this.
1316 if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
1317 blk_queue_max_sectors(drive->queue, 64);
1318 floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE;
1321 (void) ide_floppy_get_capacity(drive);
1322 idefloppy_add_settings(drive);
1325 static void ide_floppy_remove(ide_drive_t *drive)
1327 idefloppy_floppy_t *floppy = drive->driver_data;
1328 struct gendisk *g = floppy->disk;
1330 ide_proc_unregister_driver(drive, floppy->driver);
1334 ide_floppy_put(floppy);
1337 static void idefloppy_cleanup_obj(struct kref *kref)
1339 struct ide_floppy_obj *floppy = to_ide_floppy(kref);
1340 ide_drive_t *drive = floppy->drive;
1341 struct gendisk *g = floppy->disk;
1343 drive->driver_data = NULL;
1344 g->private_data = NULL;
1349 #ifdef CONFIG_IDE_PROC_FS
1350 static int proc_idefloppy_read_capacity(char *page, char **start, off_t off,
1351 int count, int *eof, void *data)
1353 ide_drive_t*drive = (ide_drive_t *)data;
1356 len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive));
1357 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1360 static ide_proc_entry_t idefloppy_proc[] = {
1361 { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL },
1362 { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
1363 { NULL, 0, NULL, NULL }
1365 #endif /* CONFIG_IDE_PROC_FS */
1367 static int ide_floppy_probe(ide_drive_t *);
1369 static ide_driver_t idefloppy_driver = {
1371 .owner = THIS_MODULE,
1372 .name = "ide-floppy",
1373 .bus = &ide_bus_type,
1375 .probe = ide_floppy_probe,
1376 .remove = ide_floppy_remove,
1377 .version = IDEFLOPPY_VERSION,
1378 .media = ide_floppy,
1379 .supports_dsc_overlap = 0,
1380 .do_request = idefloppy_do_request,
1381 .end_request = idefloppy_do_end_request,
1382 .error = __ide_error,
1383 .abort = __ide_abort,
1384 #ifdef CONFIG_IDE_PROC_FS
1385 .proc = idefloppy_proc,
1389 static int idefloppy_open(struct inode *inode, struct file *filp)
1391 struct gendisk *disk = inode->i_bdev->bd_disk;
1392 struct ide_floppy_obj *floppy;
1397 debug_log("Reached %s\n", __func__);
1399 floppy = ide_floppy_get(disk);
1403 drive = floppy->drive;
1407 if (floppy->openers == 1) {
1408 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1411 idefloppy_create_test_unit_ready_cmd(&pc);
1412 if (idefloppy_queue_pc_tail(drive, &pc)) {
1413 idefloppy_create_start_stop_cmd(&pc, 1);
1414 (void) idefloppy_queue_pc_tail(drive, &pc);
1417 if (ide_floppy_get_capacity(drive)
1418 && (filp->f_flags & O_NDELAY) == 0
1420 * Allow O_NDELAY to open a drive without a disk, or with an
1421 * unreadable disk, so that we can get the format capacity
1422 * of the drive or begin the format - Sam
1426 goto out_put_floppy;
1429 if (floppy->wp && (filp->f_mode & 2)) {
1431 goto out_put_floppy;
1433 floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED;
1434 /* IOMEGA Clik! drives do not support lock/unlock commands */
1435 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1436 idefloppy_create_prevent_cmd(&pc, 1);
1437 (void) idefloppy_queue_pc_tail(drive, &pc);
1439 check_disk_change(inode->i_bdev);
1440 } else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) {
1442 goto out_put_floppy;
1448 ide_floppy_put(floppy);
1452 static int idefloppy_release(struct inode *inode, struct file *filp)
1454 struct gendisk *disk = inode->i_bdev->bd_disk;
1455 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1456 ide_drive_t *drive = floppy->drive;
1459 debug_log("Reached %s\n", __func__);
1461 if (floppy->openers == 1) {
1462 /* IOMEGA Clik! drives do not support lock/unlock commands */
1463 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1464 idefloppy_create_prevent_cmd(&pc, 0);
1465 (void) idefloppy_queue_pc_tail(drive, &pc);
1468 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1473 ide_floppy_put(floppy);
1478 static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
1480 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1481 ide_drive_t *drive = floppy->drive;
1483 geo->heads = drive->bios_head;
1484 geo->sectors = drive->bios_sect;
1485 geo->cylinders = (u16)drive->bios_cyl; /* truncate */
1489 static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc,
1490 unsigned long arg, unsigned int cmd)
1492 if (floppy->openers > 1)
1495 /* The IOMEGA Clik! Drive doesn't support this command -
1496 * no room for an eject mechanism */
1497 if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
1498 int prevent = arg ? 1 : 0;
1500 if (cmd == CDROMEJECT)
1503 idefloppy_create_prevent_cmd(pc, prevent);
1504 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1507 if (cmd == CDROMEJECT) {
1508 idefloppy_create_start_stop_cmd(pc, 2);
1509 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1515 static int ide_floppy_format_unit(idefloppy_floppy_t *floppy,
1518 int blocks, length, flags, err = 0;
1521 if (floppy->openers > 1) {
1522 /* Don't format if someone is using the disk */
1523 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1527 floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1530 * Send ATAPI_FORMAT_UNIT to the drive.
1532 * Userland gives us the following structure:
1534 * struct idefloppy_format_command {
1540 * flags is a bitmask, currently, the only defined flag is:
1542 * 0x01 - verify media after format.
1544 if (get_user(blocks, arg) ||
1545 get_user(length, arg+1) ||
1546 get_user(flags, arg+2)) {
1551 (void) idefloppy_get_sfrp_bit(floppy->drive);
1552 idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
1554 if (idefloppy_queue_pc_tail(floppy->drive, &pc))
1559 floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
1564 static int idefloppy_ioctl(struct inode *inode, struct file *file,
1565 unsigned int cmd, unsigned long arg)
1567 struct block_device *bdev = inode->i_bdev;
1568 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1569 ide_drive_t *drive = floppy->drive;
1571 void __user *argp = (void __user *)arg;
1577 case CDROM_LOCKDOOR:
1578 return ide_floppy_lockdoor(floppy, &pc, arg, cmd);
1579 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
1581 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
1582 return ide_floppy_get_format_capacities(drive, argp);
1583 case IDEFLOPPY_IOCTL_FORMAT_START:
1584 if (!(file->f_mode & 2))
1587 return ide_floppy_format_unit(floppy, (int __user *)arg);
1588 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
1589 return idefloppy_get_format_progress(drive, argp);
1593 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1594 * and CDROM_SEND_PACKET (legacy) ioctls
1596 if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
1597 err = scsi_cmd_ioctl(file, bdev->bd_disk->queue,
1598 bdev->bd_disk, cmd, argp);
1603 err = generic_ide_ioctl(drive, file, bdev, cmd, arg);
1608 static int idefloppy_media_changed(struct gendisk *disk)
1610 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1611 ide_drive_t *drive = floppy->drive;
1614 /* do not scan partitions twice if this is a removable device */
1615 if (drive->attach) {
1619 ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED);
1620 floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED;
1624 static int idefloppy_revalidate_disk(struct gendisk *disk)
1626 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1627 set_capacity(disk, idefloppy_capacity(floppy->drive));
1631 static struct block_device_operations idefloppy_ops = {
1632 .owner = THIS_MODULE,
1633 .open = idefloppy_open,
1634 .release = idefloppy_release,
1635 .ioctl = idefloppy_ioctl,
1636 .getgeo = idefloppy_getgeo,
1637 .media_changed = idefloppy_media_changed,
1638 .revalidate_disk= idefloppy_revalidate_disk
1641 static int ide_floppy_probe(ide_drive_t *drive)
1643 idefloppy_floppy_t *floppy;
1646 if (!strstr("ide-floppy", drive->driver_req))
1648 if (!drive->present)
1650 if (drive->media != ide_floppy)
1652 if (!idefloppy_identify_device(drive, drive->id)) {
1653 printk(KERN_ERR "ide-floppy: %s: not supported by this version"
1654 " of ide-floppy\n", drive->name);
1658 printk(KERN_INFO "ide-floppy: passing drive %s to ide-scsi"
1659 " emulation.\n", drive->name);
1662 floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL);
1664 printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy"
1665 " structure\n", drive->name);
1669 g = alloc_disk(1 << PARTN_BITS);
1671 goto out_free_floppy;
1673 ide_init_disk(g, drive);
1675 ide_proc_register_driver(drive, &idefloppy_driver);
1677 kref_init(&floppy->kref);
1679 floppy->drive = drive;
1680 floppy->driver = &idefloppy_driver;
1683 g->private_data = &floppy->driver;
1685 drive->driver_data = floppy;
1687 idefloppy_setup(drive, floppy);
1689 g->minors = 1 << PARTN_BITS;
1690 g->driverfs_dev = &drive->gendev;
1691 g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
1692 g->fops = &idefloppy_ops;
1703 static void __exit idefloppy_exit(void)
1705 driver_unregister(&idefloppy_driver.gen_driver);
1708 static int __init idefloppy_init(void)
1710 printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
1711 return driver_register(&idefloppy_driver.gen_driver);
1714 MODULE_ALIAS("ide:*m-floppy*");
1715 module_init(idefloppy_init);
1716 module_exit(idefloppy_exit);
1717 MODULE_LICENSE("GPL");
1718 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");