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19#include <linux/module.h>
20#include <linux/fd.h>
21#include <linux/slab.h>
22#include <linux/blkdev.h>
23#include <linux/mutex.h>
24#include <linux/hdreg.h>
25#include <linux/kernel.h>
26#include <linux/delay.h>
27#include <linux/platform_device.h>
28
29#include <asm/mac_via.h>
30
31#define CARDNAME "swim"
32
33struct sector_header {
34 unsigned char side;
35 unsigned char track;
36 unsigned char sector;
37 unsigned char size;
38 unsigned char crc0;
39 unsigned char crc1;
40} __attribute__((packed));
41
42#define DRIVER_VERSION "Version 0.2 (2008-10-30)"
43
44#define REG(x) unsigned char x, x ## _pad[0x200 - 1];
45
46struct swim {
47 REG(write_data)
48 REG(write_mark)
49 REG(write_CRC)
50 REG(write_parameter)
51 REG(write_phase)
52 REG(write_setup)
53 REG(write_mode0)
54 REG(write_mode1)
55
56 REG(read_data)
57 REG(read_mark)
58 REG(read_error)
59 REG(read_parameter)
60 REG(read_phase)
61 REG(read_setup)
62 REG(read_status)
63 REG(read_handshake)
64} __attribute__((packed));
65
66#define swim_write(base, reg, v) out_8(&(base)->write_##reg, (v))
67#define swim_read(base, reg) in_8(&(base)->read_##reg)
68
69
70
71struct iwm {
72 REG(ph0L)
73 REG(ph0H)
74 REG(ph1L)
75 REG(ph1H)
76 REG(ph2L)
77 REG(ph2H)
78 REG(ph3L)
79 REG(ph3H)
80 REG(mtrOff)
81 REG(mtrOn)
82 REG(intDrive)
83 REG(extDrive)
84 REG(q6L)
85 REG(q6H)
86 REG(q7L)
87 REG(q7H)
88} __attribute__((packed));
89
90#define iwm_write(base, reg, v) out_8(&(base)->reg, (v))
91#define iwm_read(base, reg) in_8(&(base)->reg)
92
93
94
95#define SEEK_POSITIVE 0x070
96#define SEEK_NEGATIVE 0x074
97#define STEP 0x071
98#define MOTOR_ON 0x072
99#define MOTOR_OFF 0x076
100#define INDEX 0x073
101#define EJECT 0x077
102#define SETMFM 0x171
103#define SETGCR 0x175
104
105#define RELAX 0x033
106#define LSTRB 0x008
107
108#define CA_MASK 0x077
109
110
111
112#define READ_DATA_0 0x074
113#define TWOMEG_DRIVE 0x075
114#define SINGLE_SIDED 0x076
115#define DRIVE_PRESENT 0x077
116#define DISK_IN 0x170
117#define WRITE_PROT 0x171
118#define TRACK_ZERO 0x172
119#define TACHO 0x173
120#define READ_DATA_1 0x174
121#define MFM_MODE 0x175
122#define SEEK_COMPLETE 0x176
123#define ONEMEG_MEDIA 0x177
124
125
126
127#define MARK_BYTE 0x01
128#define CRC_ZERO 0x02
129#define RDDATA 0x04
130#define SENSE 0x08
131#define MOTEN 0x10
132#define ERROR 0x20
133#define DAT2BYTE 0x40
134#define DAT1BYTE 0x80
135
136
137
138#define S_INV_WDATA 0x01
139#define S_3_5_SELECT 0x02
140#define S_GCR 0x04
141#define S_FCLK_DIV2 0x08
142#define S_ERROR_CORR 0x10
143#define S_IBM_DRIVE 0x20
144#define S_GCR_WRITE 0x40
145#define S_TIMEOUT 0x80
146
147
148
149#define CLFIFO 0x01
150#define ENBL1 0x02
151#define ENBL2 0x04
152#define ACTION 0x08
153#define WRITE_MODE 0x10
154#define HEDSEL 0x20
155#define MOTON 0x80
156
157
158
159enum drive_location {
160 INTERNAL_DRIVE = 0x02,
161 EXTERNAL_DRIVE = 0x04,
162};
163
164enum media_type {
165 DD_MEDIA,
166 HD_MEDIA,
167};
168
169struct floppy_state {
170
171
172
173 enum drive_location location;
174 int head_number;
175
176
177
178 int disk_in;
179 int ejected;
180 enum media_type type;
181 int write_protected;
182
183 int total_secs;
184 int secpercyl;
185 int secpertrack;
186
187
188
189 int track;
190 int ref_count;
191
192 struct gendisk *disk;
193
194
195
196 struct swim_priv *swd;
197};
198
199enum motor_action {
200 OFF,
201 ON,
202};
203
204enum head {
205 LOWER_HEAD = 0,
206 UPPER_HEAD = 1,
207};
208
209#define FD_MAX_UNIT 2
210
211struct swim_priv {
212 struct swim __iomem *base;
213 spinlock_t lock;
214 struct request_queue *queue;
215 int floppy_count;
216 struct floppy_state unit[FD_MAX_UNIT];
217};
218
219extern int swim_read_sector_header(struct swim __iomem *base,
220 struct sector_header *header);
221extern int swim_read_sector_data(struct swim __iomem *base,
222 unsigned char *data);
223
224static DEFINE_MUTEX(swim_mutex);
225static inline void set_swim_mode(struct swim __iomem *base, int enable)
226{
227 struct iwm __iomem *iwm_base;
228 unsigned long flags;
229
230 if (!enable) {
231 swim_write(base, mode0, 0xf8);
232 return;
233 }
234
235 iwm_base = (struct iwm __iomem *)base;
236 local_irq_save(flags);
237
238 iwm_read(iwm_base, q7L);
239 iwm_read(iwm_base, mtrOff);
240 iwm_read(iwm_base, q6H);
241
242 iwm_write(iwm_base, q7H, 0x57);
243 iwm_write(iwm_base, q7H, 0x17);
244 iwm_write(iwm_base, q7H, 0x57);
245 iwm_write(iwm_base, q7H, 0x57);
246
247 local_irq_restore(flags);
248}
249
250static inline int get_swim_mode(struct swim __iomem *base)
251{
252 unsigned long flags;
253
254 local_irq_save(flags);
255
256 swim_write(base, phase, 0xf5);
257 if (swim_read(base, phase) != 0xf5)
258 goto is_iwm;
259 swim_write(base, phase, 0xf6);
260 if (swim_read(base, phase) != 0xf6)
261 goto is_iwm;
262 swim_write(base, phase, 0xf7);
263 if (swim_read(base, phase) != 0xf7)
264 goto is_iwm;
265 local_irq_restore(flags);
266 return 1;
267is_iwm:
268 local_irq_restore(flags);
269 return 0;
270}
271
272static inline void swim_select(struct swim __iomem *base, int sel)
273{
274 swim_write(base, phase, RELAX);
275
276 via1_set_head(sel & 0x100);
277
278 swim_write(base, phase, sel & CA_MASK);
279}
280
281static inline void swim_action(struct swim __iomem *base, int action)
282{
283 unsigned long flags;
284
285 local_irq_save(flags);
286
287 swim_select(base, action);
288 udelay(1);
289 swim_write(base, phase, (LSTRB<<4) | LSTRB);
290 udelay(1);
291 swim_write(base, phase, (LSTRB<<4) | ((~LSTRB) & 0x0F));
292 udelay(1);
293
294 local_irq_restore(flags);
295}
296
297static inline int swim_readbit(struct swim __iomem *base, int bit)
298{
299 int stat;
300
301 swim_select(base, bit);
302
303 udelay(10);
304
305 stat = swim_read(base, handshake);
306
307 return (stat & SENSE) == 0;
308}
309
310static inline void swim_drive(struct swim __iomem *base,
311 enum drive_location location)
312{
313 if (location == INTERNAL_DRIVE) {
314 swim_write(base, mode0, EXTERNAL_DRIVE);
315 swim_write(base, mode1, INTERNAL_DRIVE);
316 } else if (location == EXTERNAL_DRIVE) {
317 swim_write(base, mode0, INTERNAL_DRIVE);
318 swim_write(base, mode1, EXTERNAL_DRIVE);
319 }
320}
321
322static inline void swim_motor(struct swim __iomem *base,
323 enum motor_action action)
324{
325 if (action == ON) {
326 int i;
327
328 swim_action(base, MOTOR_ON);
329
330 for (i = 0; i < 2*HZ; i++) {
331 swim_select(base, RELAX);
332 if (swim_readbit(base, MOTOR_ON))
333 break;
334 current->state = TASK_INTERRUPTIBLE;
335 schedule_timeout(1);
336 }
337 } else if (action == OFF) {
338 swim_action(base, MOTOR_OFF);
339 swim_select(base, RELAX);
340 }
341}
342
343static inline void swim_eject(struct swim __iomem *base)
344{
345 int i;
346
347 swim_action(base, EJECT);
348
349 for (i = 0; i < 2*HZ; i++) {
350 swim_select(base, RELAX);
351 if (!swim_readbit(base, DISK_IN))
352 break;
353 current->state = TASK_INTERRUPTIBLE;
354 schedule_timeout(1);
355 }
356 swim_select(base, RELAX);
357}
358
359static inline void swim_head(struct swim __iomem *base, enum head head)
360{
361
362
363 if (head == UPPER_HEAD)
364 swim_select(base, READ_DATA_1);
365 else if (head == LOWER_HEAD)
366 swim_select(base, READ_DATA_0);
367}
368
369static inline int swim_step(struct swim __iomem *base)
370{
371 int wait;
372
373 swim_action(base, STEP);
374
375 for (wait = 0; wait < HZ; wait++) {
376
377 current->state = TASK_INTERRUPTIBLE;
378 schedule_timeout(1);
379
380 swim_select(base, RELAX);
381 if (!swim_readbit(base, STEP))
382 return 0;
383 }
384 return -1;
385}
386
387static inline int swim_track00(struct swim __iomem *base)
388{
389 int try;
390
391 swim_action(base, SEEK_NEGATIVE);
392
393 for (try = 0; try < 100; try++) {
394
395 swim_select(base, RELAX);
396 if (swim_readbit(base, TRACK_ZERO))
397 break;
398
399 if (swim_step(base))
400 return -1;
401 }
402
403 if (swim_readbit(base, TRACK_ZERO))
404 return 0;
405
406 return -1;
407}
408
409static inline int swim_seek(struct swim __iomem *base, int step)
410{
411 if (step == 0)
412 return 0;
413
414 if (step < 0) {
415 swim_action(base, SEEK_NEGATIVE);
416 step = -step;
417 } else
418 swim_action(base, SEEK_POSITIVE);
419
420 for ( ; step > 0; step--) {
421 if (swim_step(base))
422 return -1;
423 }
424
425 return 0;
426}
427
428static inline int swim_track(struct floppy_state *fs, int track)
429{
430 struct swim __iomem *base = fs->swd->base;
431 int ret;
432
433 ret = swim_seek(base, track - fs->track);
434
435 if (ret == 0)
436 fs->track = track;
437 else {
438 swim_track00(base);
439 fs->track = 0;
440 }
441
442 return ret;
443}
444
445static int floppy_eject(struct floppy_state *fs)
446{
447 struct swim __iomem *base = fs->swd->base;
448
449 swim_drive(base, fs->location);
450 swim_motor(base, OFF);
451 swim_eject(base);
452
453 fs->disk_in = 0;
454 fs->ejected = 1;
455
456 return 0;
457}
458
459static inline int swim_read_sector(struct floppy_state *fs,
460 int side, int track,
461 int sector, unsigned char *buffer)
462{
463 struct swim __iomem *base = fs->swd->base;
464 unsigned long flags;
465 struct sector_header header;
466 int ret = -1;
467 short i;
468
469 swim_track(fs, track);
470
471 swim_write(base, mode1, MOTON);
472 swim_head(base, side);
473 swim_write(base, mode0, side);
474
475 local_irq_save(flags);
476 for (i = 0; i < 36; i++) {
477 ret = swim_read_sector_header(base, &header);
478 if (!ret && (header.sector == sector)) {
479
480
481 ret = swim_read_sector_data(base, buffer);
482 break;
483 }
484 }
485 local_irq_restore(flags);
486
487 swim_write(base, mode0, MOTON);
488
489 if ((header.side != side) || (header.track != track) ||
490 (header.sector != sector))
491 return 0;
492
493 return ret;
494}
495
496static int floppy_read_sectors(struct floppy_state *fs,
497 int req_sector, int sectors_nb,
498 unsigned char *buffer)
499{
500 struct swim __iomem *base = fs->swd->base;
501 int ret;
502 int side, track, sector;
503 int i, try;
504
505
506 swim_drive(base, fs->location);
507 for (i = req_sector; i < req_sector + sectors_nb; i++) {
508 int x;
509 track = i / fs->secpercyl;
510 x = i % fs->secpercyl;
511 side = x / fs->secpertrack;
512 sector = x % fs->secpertrack + 1;
513
514 try = 5;
515 do {
516 ret = swim_read_sector(fs, side, track, sector,
517 buffer);
518 if (try-- == 0)
519 return -EIO;
520 } while (ret != 512);
521
522 buffer += ret;
523 }
524
525 return 0;
526}
527
528static void redo_fd_request(struct request_queue *q)
529{
530 struct request *req;
531 struct floppy_state *fs;
532
533 req = blk_fetch_request(q);
534 while (req) {
535 int err = -EIO;
536
537 fs = req->rq_disk->private_data;
538 if (blk_rq_pos(req) >= fs->total_secs)
539 goto done;
540 if (!fs->disk_in)
541 goto done;
542 if (rq_data_dir(req) == WRITE && fs->write_protected)
543 goto done;
544
545 switch (rq_data_dir(req)) {
546 case WRITE:
547
548 break;
549 case READ:
550 err = floppy_read_sectors(fs, blk_rq_pos(req),
551 blk_rq_cur_sectors(req),
552 req->buffer);
553 break;
554 }
555 done:
556 if (!__blk_end_request_cur(req, err))
557 req = blk_fetch_request(q);
558 }
559}
560
561static void do_fd_request(struct request_queue *q)
562{
563 redo_fd_request(q);
564}
565
566static struct floppy_struct floppy_type[4] = {
567 { 0, 0, 0, 0, 0, 0x00, 0x00, 0x00, 0x00, NULL },
568 { 720, 9, 1, 80, 0, 0x2A, 0x02, 0xDF, 0x50, NULL },
569 { 1440, 9, 2, 80, 0, 0x2A, 0x02, 0xDF, 0x50, NULL },
570 { 2880, 18, 2, 80, 0, 0x1B, 0x00, 0xCF, 0x6C, NULL },
571};
572
573static int get_floppy_geometry(struct floppy_state *fs, int type,
574 struct floppy_struct **g)
575{
576 if (type >= ARRAY_SIZE(floppy_type))
577 return -EINVAL;
578
579 if (type)
580 *g = &floppy_type[type];
581 else if (fs->type == HD_MEDIA)
582 *g = &floppy_type[3];
583 else if (fs->head_number == 2)
584 *g = &floppy_type[2];
585 else
586 *g = &floppy_type[1];
587
588 return 0;
589}
590
591static void setup_medium(struct floppy_state *fs)
592{
593 struct swim __iomem *base = fs->swd->base;
594
595 if (swim_readbit(base, DISK_IN)) {
596 struct floppy_struct *g;
597 fs->disk_in = 1;
598 fs->write_protected = swim_readbit(base, WRITE_PROT);
599 fs->type = swim_readbit(base, ONEMEG_MEDIA);
600
601 if (swim_track00(base))
602 printk(KERN_ERR
603 "SWIM: cannot move floppy head to track 0\n");
604
605 swim_track00(base);
606
607 get_floppy_geometry(fs, 0, &g);
608 fs->total_secs = g->size;
609 fs->secpercyl = g->head * g->sect;
610 fs->secpertrack = g->sect;
611 fs->track = 0;
612 } else {
613 fs->disk_in = 0;
614 }
615}
616
617static int floppy_open(struct block_device *bdev, fmode_t mode)
618{
619 struct floppy_state *fs = bdev->bd_disk->private_data;
620 struct swim __iomem *base = fs->swd->base;
621 int err;
622
623 if (fs->ref_count == -1 || (fs->ref_count && mode & FMODE_EXCL))
624 return -EBUSY;
625
626 if (mode & FMODE_EXCL)
627 fs->ref_count = -1;
628 else
629 fs->ref_count++;
630
631 swim_write(base, setup, S_IBM_DRIVE | S_FCLK_DIV2);
632 udelay(10);
633 swim_drive(base, INTERNAL_DRIVE);
634 swim_motor(base, ON);
635 swim_action(base, SETMFM);
636 if (fs->ejected)
637 setup_medium(fs);
638 if (!fs->disk_in) {
639 err = -ENXIO;
640 goto out;
641 }
642
643 if (mode & FMODE_NDELAY)
644 return 0;
645
646 if (mode & (FMODE_READ|FMODE_WRITE)) {
647 check_disk_change(bdev);
648 if ((mode & FMODE_WRITE) && fs->write_protected) {
649 err = -EROFS;
650 goto out;
651 }
652 }
653 return 0;
654out:
655 if (fs->ref_count < 0)
656 fs->ref_count = 0;
657 else if (fs->ref_count > 0)
658 --fs->ref_count;
659
660 if (fs->ref_count == 0)
661 swim_motor(base, OFF);
662 return err;
663}
664
665static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
666{
667 int ret;
668
669 mutex_lock(&swim_mutex);
670 ret = floppy_open(bdev, mode);
671 mutex_unlock(&swim_mutex);
672
673 return ret;
674}
675
676static void floppy_release(struct gendisk *disk, fmode_t mode)
677{
678 struct floppy_state *fs = disk->private_data;
679 struct swim __iomem *base = fs->swd->base;
680
681 mutex_lock(&swim_mutex);
682 if (fs->ref_count < 0)
683 fs->ref_count = 0;
684 else if (fs->ref_count > 0)
685 --fs->ref_count;
686
687 if (fs->ref_count == 0)
688 swim_motor(base, OFF);
689 mutex_unlock(&swim_mutex);
690}
691
692static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
693 unsigned int cmd, unsigned long param)
694{
695 struct floppy_state *fs = bdev->bd_disk->private_data;
696 int err;
697
698 if ((cmd & 0x80) && !capable(CAP_SYS_ADMIN))
699 return -EPERM;
700
701 switch (cmd) {
702 case FDEJECT:
703 if (fs->ref_count != 1)
704 return -EBUSY;
705 mutex_lock(&swim_mutex);
706 err = floppy_eject(fs);
707 mutex_unlock(&swim_mutex);
708 return err;
709
710 case FDGETPRM:
711 if (copy_to_user((void __user *) param, (void *) &floppy_type,
712 sizeof(struct floppy_struct)))
713 return -EFAULT;
714 break;
715
716 default:
717 printk(KERN_DEBUG "SWIM floppy_ioctl: unknown cmd %d\n",
718 cmd);
719 return -ENOSYS;
720 }
721 return 0;
722}
723
724static int floppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
725{
726 struct floppy_state *fs = bdev->bd_disk->private_data;
727 struct floppy_struct *g;
728 int ret;
729
730 ret = get_floppy_geometry(fs, 0, &g);
731 if (ret)
732 return ret;
733
734 geo->heads = g->head;
735 geo->sectors = g->sect;
736 geo->cylinders = g->track;
737
738 return 0;
739}
740
741static unsigned int floppy_check_events(struct gendisk *disk,
742 unsigned int clearing)
743{
744 struct floppy_state *fs = disk->private_data;
745
746 return fs->ejected ? DISK_EVENT_MEDIA_CHANGE : 0;
747}
748
749static int floppy_revalidate(struct gendisk *disk)
750{
751 struct floppy_state *fs = disk->private_data;
752 struct swim __iomem *base = fs->swd->base;
753
754 swim_drive(base, fs->location);
755
756 if (fs->ejected)
757 setup_medium(fs);
758
759 if (!fs->disk_in)
760 swim_motor(base, OFF);
761 else
762 fs->ejected = 0;
763
764 return !fs->disk_in;
765}
766
767static const struct block_device_operations floppy_fops = {
768 .owner = THIS_MODULE,
769 .open = floppy_unlocked_open,
770 .release = floppy_release,
771 .ioctl = floppy_ioctl,
772 .getgeo = floppy_getgeo,
773 .check_events = floppy_check_events,
774 .revalidate_disk = floppy_revalidate,
775};
776
777static struct kobject *floppy_find(dev_t dev, int *part, void *data)
778{
779 struct swim_priv *swd = data;
780 int drive = (*part & 3);
781
782 if (drive > swd->floppy_count)
783 return NULL;
784
785 *part = 0;
786 return get_disk(swd->unit[drive].disk);
787}
788
789static int swim_add_floppy(struct swim_priv *swd, enum drive_location location)
790{
791 struct floppy_state *fs = &swd->unit[swd->floppy_count];
792 struct swim __iomem *base = swd->base;
793
794 fs->location = location;
795
796 swim_drive(base, location);
797
798 swim_motor(base, OFF);
799
800 if (swim_readbit(base, SINGLE_SIDED))
801 fs->head_number = 1;
802 else
803 fs->head_number = 2;
804 fs->ref_count = 0;
805 fs->ejected = 1;
806
807 swd->floppy_count++;
808
809 return 0;
810}
811
812static int swim_floppy_init(struct swim_priv *swd)
813{
814 int err;
815 int drive;
816 struct swim __iomem *base = swd->base;
817
818
819
820 swim_drive(base, INTERNAL_DRIVE);
821 if (swim_readbit(base, DRIVE_PRESENT))
822 swim_add_floppy(swd, INTERNAL_DRIVE);
823 swim_drive(base, EXTERNAL_DRIVE);
824 if (swim_readbit(base, DRIVE_PRESENT))
825 swim_add_floppy(swd, EXTERNAL_DRIVE);
826
827
828
829 err = register_blkdev(FLOPPY_MAJOR, "fd");
830 if (err) {
831 printk(KERN_ERR "Unable to get major %d for SWIM floppy\n",
832 FLOPPY_MAJOR);
833 return -EBUSY;
834 }
835
836 for (drive = 0; drive < swd->floppy_count; drive++) {
837 swd->unit[drive].disk = alloc_disk(1);
838 if (swd->unit[drive].disk == NULL) {
839 err = -ENOMEM;
840 goto exit_put_disks;
841 }
842 swd->unit[drive].swd = swd;
843 }
844
845 spin_lock_init(&swd->lock);
846 swd->queue = blk_init_queue(do_fd_request, &swd->lock);
847 if (!swd->queue) {
848 err = -ENOMEM;
849 goto exit_put_disks;
850 }
851
852 for (drive = 0; drive < swd->floppy_count; drive++) {
853 swd->unit[drive].disk->flags = GENHD_FL_REMOVABLE;
854 swd->unit[drive].disk->major = FLOPPY_MAJOR;
855 swd->unit[drive].disk->first_minor = drive;
856 sprintf(swd->unit[drive].disk->disk_name, "fd%d", drive);
857 swd->unit[drive].disk->fops = &floppy_fops;
858 swd->unit[drive].disk->private_data = &swd->unit[drive];
859 swd->unit[drive].disk->queue = swd->queue;
860 set_capacity(swd->unit[drive].disk, 2880);
861 add_disk(swd->unit[drive].disk);
862 }
863
864 blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE,
865 floppy_find, NULL, swd);
866
867 return 0;
868
869exit_put_disks:
870 unregister_blkdev(FLOPPY_MAJOR, "fd");
871 while (drive--)
872 put_disk(swd->unit[drive].disk);
873 return err;
874}
875
876static int swim_probe(struct platform_device *dev)
877{
878 struct resource *res;
879 struct swim __iomem *swim_base;
880 struct swim_priv *swd;
881 int ret;
882
883 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
884 if (!res) {
885 ret = -ENODEV;
886 goto out;
887 }
888
889 if (!request_mem_region(res->start, resource_size(res), CARDNAME)) {
890 ret = -EBUSY;
891 goto out;
892 }
893
894 swim_base = ioremap(res->start, resource_size(res));
895 if (!swim_base) {
896 return -ENOMEM;
897 goto out_release_io;
898 }
899
900
901
902 set_swim_mode(swim_base, 1);
903 if (!get_swim_mode(swim_base)) {
904 printk(KERN_INFO "SWIM device not found !\n");
905 ret = -ENODEV;
906 goto out_iounmap;
907 }
908
909
910
911 swd = kzalloc(sizeof(struct swim_priv), GFP_KERNEL);
912 if (!swd) {
913 ret = -ENOMEM;
914 goto out_iounmap;
915 }
916 platform_set_drvdata(dev, swd);
917
918 swd->base = swim_base;
919
920 ret = swim_floppy_init(swd);
921 if (ret)
922 goto out_kfree;
923
924 return 0;
925
926out_kfree:
927 platform_set_drvdata(dev, NULL);
928 kfree(swd);
929out_iounmap:
930 iounmap(swim_base);
931out_release_io:
932 release_mem_region(res->start, resource_size(res));
933out:
934 return ret;
935}
936
937static int swim_remove(struct platform_device *dev)
938{
939 struct swim_priv *swd = platform_get_drvdata(dev);
940 int drive;
941 struct resource *res;
942
943 blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
944
945 for (drive = 0; drive < swd->floppy_count; drive++) {
946 del_gendisk(swd->unit[drive].disk);
947 put_disk(swd->unit[drive].disk);
948 }
949
950 unregister_blkdev(FLOPPY_MAJOR, "fd");
951
952 blk_cleanup_queue(swd->queue);
953
954
955
956 for (drive = 0; drive < swd->floppy_count; drive++)
957 floppy_eject(&swd->unit[drive]);
958
959 iounmap(swd->base);
960
961 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
962 if (res)
963 release_mem_region(res->start, resource_size(res));
964
965 platform_set_drvdata(dev, NULL);
966 kfree(swd);
967
968 return 0;
969}
970
971static struct platform_driver swim_driver = {
972 .probe = swim_probe,
973 .remove = swim_remove,
974 .driver = {
975 .name = CARDNAME,
976 .owner = THIS_MODULE,
977 },
978};
979
980static int __init swim_init(void)
981{
982 printk(KERN_INFO "SWIM floppy driver %s\n", DRIVER_VERSION);
983
984 return platform_driver_register(&swim_driver);
985}
986module_init(swim_init);
987
988static void __exit swim_exit(void)
989{
990 platform_driver_unregister(&swim_driver);
991}
992module_exit(swim_exit);
993
994MODULE_DESCRIPTION("Driver for SWIM floppy controller");
995MODULE_LICENSE("GPL");
996MODULE_AUTHOR("Laurent Vivier <laurent@lvivier.info>");
997MODULE_ALIAS_BLOCKDEV_MAJOR(FLOPPY_MAJOR);
998
