Lines Matching refs:fs
210 #define swim3_err(fmt, arg...) dev_err(&fs->mdev->ofdev.dev, "[fd%d] " fmt, fs->index, arg)
211 #define swim3_warn(fmt, arg...) dev_warn(&fs->mdev->ofdev.dev, "[fd%d] " fmt, fs->index, arg)
212 #define swim3_info(fmt, arg...) dev_info(&fs->mdev->ofdev.dev, "[fd%d] " fmt, fs->index, arg)
215 #define swim3_dbg(fmt, arg...) dev_dbg(&fs->mdev->ofdev.dev, "[fd%d] " fmt, fs->index, arg)
238 static void seek_track(struct floppy_state *fs, int n);
240 static void act(struct floppy_state *fs);
247 static int grab_drive(struct floppy_state *fs, enum swim_state state,
249 static void release_drive(struct floppy_state *fs);
250 static int fd_eject(struct floppy_state *fs);
259 static bool swim3_end_request(struct floppy_state *fs, int err, unsigned int nr_bytes) in swim3_end_request() argument
261 struct request *req = fs->cur_req; in swim3_end_request()
272 fs->cur_req = NULL; in swim3_end_request()
276 static void swim3_select(struct floppy_state *fs, int sel) in swim3_select() argument
278 struct swim3 __iomem *sw = fs->swim3; in swim3_select()
288 static void swim3_action(struct floppy_state *fs, int action) in swim3_action() argument
290 struct swim3 __iomem *sw = fs->swim3; in swim3_action()
292 swim3_select(fs, action); in swim3_action()
300 static int swim3_readbit(struct floppy_state *fs, int bit) in swim3_readbit() argument
302 struct swim3 __iomem *sw = fs->swim3; in swim3_readbit()
305 swim3_select(fs, bit); in swim3_readbit()
311 static void start_request(struct floppy_state *fs) in start_request() argument
316 swim3_dbg("start request, initial state=%d\n", fs->state); in start_request()
318 if (fs->state == idle && fs->wanted) { in start_request()
319 fs->state = available; in start_request()
320 wake_up(&fs->wait); in start_request()
323 while (fs->state == idle) { in start_request()
324 swim3_dbg("start request, idle loop, cur_req=%p\n", fs->cur_req); in start_request()
325 if (!fs->cur_req) { in start_request()
326 fs->cur_req = blk_fetch_request(disks[fs->index]->queue); in start_request()
327 swim3_dbg(" fetched request %p\n", fs->cur_req); in start_request()
328 if (!fs->cur_req) in start_request()
331 req = fs->cur_req; in start_request()
333 if (fs->mdev->media_bay && in start_request()
334 check_media_bay(fs->mdev->media_bay) != MB_FD) { in start_request()
336 swim3_end_request(fs, -ENODEV, 0); in start_request()
349 if (blk_rq_pos(req) >= fs->total_secs) { in start_request()
351 (long)blk_rq_pos(req), (long)fs->total_secs); in start_request()
352 swim3_end_request(fs, -EIO, 0); in start_request()
355 if (fs->ejected) { in start_request()
357 swim3_end_request(fs, -EIO, 0); in start_request()
362 if (fs->write_prot < 0) in start_request()
363 fs->write_prot = swim3_readbit(fs, WRITE_PROT); in start_request()
364 if (fs->write_prot) { in start_request()
366 swim3_end_request(fs, -EIO, 0); in start_request()
377 fs->req_cyl = ((long)blk_rq_pos(req)) / fs->secpercyl; in start_request()
378 x = ((long)blk_rq_pos(req)) % fs->secpercyl; in start_request()
379 fs->head = x / fs->secpertrack; in start_request()
380 fs->req_sector = x % fs->secpertrack + 1; in start_request()
381 fs->state = do_transfer; in start_request()
382 fs->retries = 0; in start_request()
384 act(fs); in start_request()
393 static void set_timeout(struct floppy_state *fs, int nticks, in set_timeout() argument
396 if (fs->timeout_pending) in set_timeout()
397 del_timer(&fs->timeout); in set_timeout()
398 fs->timeout.expires = jiffies + nticks; in set_timeout()
399 fs->timeout.function = proc; in set_timeout()
400 fs->timeout.data = (unsigned long) fs; in set_timeout()
401 add_timer(&fs->timeout); in set_timeout()
402 fs->timeout_pending = 1; in set_timeout()
405 static inline void scan_track(struct floppy_state *fs) in scan_track() argument
407 struct swim3 __iomem *sw = fs->swim3; in scan_track()
409 swim3_select(fs, READ_DATA_0); in scan_track()
415 set_timeout(fs, HZ, scan_timeout); /* enable timeout */ in scan_track()
418 static inline void seek_track(struct floppy_state *fs, int n) in seek_track() argument
420 struct swim3 __iomem *sw = fs->swim3; in seek_track()
423 swim3_action(fs, SEEK_POSITIVE); in seek_track()
426 swim3_action(fs, SEEK_NEGATIVE); in seek_track()
429 fs->expect_cyl = (fs->cur_cyl >= 0)? fs->cur_cyl + n: -1; in seek_track()
430 swim3_select(fs, STEP); in seek_track()
435 set_timeout(fs, 3*HZ, seek_timeout); /* enable timeout */ in seek_track()
436 fs->settle_time = 0; in seek_track()
448 static inline void setup_transfer(struct floppy_state *fs) in setup_transfer() argument
451 struct swim3 __iomem *sw = fs->swim3; in setup_transfer()
452 struct dbdma_cmd *cp = fs->dma_cmd; in setup_transfer()
453 struct dbdma_regs __iomem *dr = fs->dma; in setup_transfer()
454 struct request *req = fs->cur_req; in setup_transfer()
463 n = fs->secpertrack - fs->req_sector + 1; in setup_transfer()
469 fs->req_sector, fs->secpertrack, fs->head, n); in setup_transfer()
471 fs->scount = n; in setup_transfer()
472 swim3_select(fs, fs->head? READ_DATA_1: READ_DATA_0); in setup_transfer()
473 out_8(&sw->sector, fs->req_sector); in setup_transfer()
499 set_timeout(fs, 2*HZ, xfer_timeout); /* enable timeout */ in setup_transfer()
502 static void act(struct floppy_state *fs) in act() argument
506 fs->state, fs->req_cyl, fs->cur_cyl); in act()
508 switch (fs->state) { in act()
513 if (swim3_readbit(fs, TRACK_ZERO)) { in act()
515 fs->cur_cyl = 0; in act()
516 if (fs->req_cyl == 0) in act()
517 fs->state = do_transfer; in act()
519 fs->state = seeking; in act()
522 scan_track(fs); in act()
526 if (fs->cur_cyl < 0) { in act()
527 fs->expect_cyl = -1; in act()
528 fs->state = locating; in act()
531 if (fs->req_cyl == fs->cur_cyl) { in act()
533 fs->state = do_transfer; in act()
536 seek_track(fs, fs->req_cyl - fs->cur_cyl); in act()
541 fs->settle_time = (HZ + 32) / 33; in act()
542 set_timeout(fs, fs->settle_time, settle_timeout); in act()
546 if (fs->cur_cyl != fs->req_cyl) { in act()
547 if (fs->retries > 5) { in act()
549 fs->req_cyl, fs->cur_cyl); in act()
550 swim3_end_request(fs, -EIO, 0); in act()
551 fs->state = idle; in act()
554 fs->state = seeking; in act()
557 setup_transfer(fs); in act()
561 seek_track(fs, -5); in act()
565 swim3_err("Unknown state %d\n", fs->state); in act()
573 struct floppy_state *fs = (struct floppy_state *) data; in scan_timeout() local
574 struct swim3 __iomem *sw = fs->swim3; in scan_timeout()
577 swim3_dbg("* scan timeout, state=%d\n", fs->state); in scan_timeout()
580 fs->timeout_pending = 0; in scan_timeout()
584 fs->cur_cyl = -1; in scan_timeout()
585 if (fs->retries > 5) { in scan_timeout()
586 swim3_end_request(fs, -EIO, 0); in scan_timeout()
587 fs->state = idle; in scan_timeout()
588 start_request(fs); in scan_timeout()
590 fs->state = jogging; in scan_timeout()
591 act(fs); in scan_timeout()
598 struct floppy_state *fs = (struct floppy_state *) data; in seek_timeout() local
599 struct swim3 __iomem *sw = fs->swim3; in seek_timeout()
602 swim3_dbg("* seek timeout, state=%d\n", fs->state); in seek_timeout()
605 fs->timeout_pending = 0; in seek_timeout()
610 swim3_end_request(fs, -EIO, 0); in seek_timeout()
611 fs->state = idle; in seek_timeout()
612 start_request(fs); in seek_timeout()
618 struct floppy_state *fs = (struct floppy_state *) data; in settle_timeout() local
619 struct swim3 __iomem *sw = fs->swim3; in settle_timeout()
622 swim3_dbg("* settle timeout, state=%d\n", fs->state); in settle_timeout()
625 fs->timeout_pending = 0; in settle_timeout()
626 if (swim3_readbit(fs, SEEK_COMPLETE)) { in settle_timeout()
628 fs->state = locating; in settle_timeout()
629 act(fs); in settle_timeout()
633 if (fs->settle_time < 2*HZ) { in settle_timeout()
634 ++fs->settle_time; in settle_timeout()
635 set_timeout(fs, 1, settle_timeout); in settle_timeout()
639 swim3_end_request(fs, -EIO, 0); in settle_timeout()
640 fs->state = idle; in settle_timeout()
641 start_request(fs); in settle_timeout()
648 struct floppy_state *fs = (struct floppy_state *) data; in xfer_timeout() local
649 struct swim3 __iomem *sw = fs->swim3; in xfer_timeout()
650 struct dbdma_regs __iomem *dr = fs->dma; in xfer_timeout()
654 swim3_dbg("* xfer timeout, state=%d\n", fs->state); in xfer_timeout()
657 fs->timeout_pending = 0; in xfer_timeout()
666 (rq_data_dir(fs->cur_req)==WRITE? "writ": "read"), in xfer_timeout()
667 (long)blk_rq_pos(fs->cur_req)); in xfer_timeout()
668 swim3_end_request(fs, -EIO, 0); in xfer_timeout()
669 fs->state = idle; in xfer_timeout()
670 start_request(fs); in xfer_timeout()
676 struct floppy_state *fs = (struct floppy_state *) dev_id; in swim3_interrupt() local
677 struct swim3 __iomem *sw = fs->swim3; in swim3_interrupt()
683 struct request *req = fs->cur_req; in swim3_interrupt()
685 swim3_dbg("* interrupt, state=%d\n", fs->state); in swim3_interrupt()
690 if ((intr & ERROR_INTR) && fs->state != do_transfer) in swim3_interrupt()
692 fs->state, rq_data_dir(req), intr, err); in swim3_interrupt()
693 switch (fs->state) { in swim3_interrupt()
699 del_timer(&fs->timeout); in swim3_interrupt()
700 fs->timeout_pending = 0; in swim3_interrupt()
703 fs->cur_cyl = -1; in swim3_interrupt()
704 if (fs->retries > 5) { in swim3_interrupt()
705 swim3_end_request(fs, -EIO, 0); in swim3_interrupt()
706 fs->state = idle; in swim3_interrupt()
707 start_request(fs); in swim3_interrupt()
709 fs->state = jogging; in swim3_interrupt()
710 act(fs); in swim3_interrupt()
714 fs->cur_cyl = sw->ctrack; in swim3_interrupt()
715 fs->cur_sector = sw->csect; in swim3_interrupt()
716 if (fs->expect_cyl != -1 && fs->expect_cyl != fs->cur_cyl) in swim3_interrupt()
718 fs->expect_cyl, fs->cur_cyl); in swim3_interrupt()
719 fs->state = do_transfer; in swim3_interrupt()
720 act(fs); in swim3_interrupt()
729 del_timer(&fs->timeout); in swim3_interrupt()
730 fs->timeout_pending = 0; in swim3_interrupt()
731 if (fs->state == seeking) in swim3_interrupt()
732 ++fs->retries; in swim3_interrupt()
733 fs->state = settling; in swim3_interrupt()
734 act(fs); in swim3_interrupt()
739 del_timer(&fs->timeout); in swim3_interrupt()
740 fs->timeout_pending = 0; in swim3_interrupt()
741 act(fs); in swim3_interrupt()
749 del_timer(&fs->timeout); in swim3_interrupt()
750 fs->timeout_pending = 0; in swim3_interrupt()
751 dr = fs->dma; in swim3_interrupt()
752 cp = fs->dma_cmd; in swim3_interrupt()
776 n = fs->scount - 1 - resid / 512; in swim3_interrupt()
779 fs->req_sector += n; in swim3_interrupt()
781 if (fs->retries < 5) { in swim3_interrupt()
782 ++fs->retries; in swim3_interrupt()
783 act(fs); in swim3_interrupt()
788 swim3_end_request(fs, -EIO, 0); in swim3_interrupt()
789 fs->state = idle; in swim3_interrupt()
796 fs->state, rq_data_dir(req), intr, err); in swim3_interrupt()
797 swim3_end_request(fs, -EIO, 0); in swim3_interrupt()
798 fs->state = idle; in swim3_interrupt()
799 start_request(fs); in swim3_interrupt()
802 fs->retries = 0; in swim3_interrupt()
803 if (swim3_end_request(fs, 0, fs->scount << 9)) { in swim3_interrupt()
804 fs->req_sector += fs->scount; in swim3_interrupt()
805 if (fs->req_sector > fs->secpertrack) { in swim3_interrupt()
806 fs->req_sector -= fs->secpertrack; in swim3_interrupt()
807 if (++fs->head > 1) { in swim3_interrupt()
808 fs->head = 0; in swim3_interrupt()
809 ++fs->req_cyl; in swim3_interrupt()
812 act(fs); in swim3_interrupt()
814 fs->state = idle; in swim3_interrupt()
816 if (fs->state == idle) in swim3_interrupt()
817 start_request(fs); in swim3_interrupt()
820 swim3_err("Don't know what to do in state %d\n", fs->state); in swim3_interrupt()
833 static int grab_drive(struct floppy_state *fs, enum swim_state state, in grab_drive() argument
841 if (fs->state != idle && fs->state != available) { in grab_drive()
842 ++fs->wanted; in grab_drive()
843 while (fs->state != available) { in grab_drive()
846 --fs->wanted; in grab_drive()
849 interruptible_sleep_on(&fs->wait); in grab_drive()
852 --fs->wanted; in grab_drive()
854 fs->state = state; in grab_drive()
860 static void release_drive(struct floppy_state *fs) in release_drive() argument
867 fs->state = idle; in release_drive()
868 start_request(fs); in release_drive()
872 static int fd_eject(struct floppy_state *fs) in fd_eject() argument
876 err = grab_drive(fs, ejecting, 1); in fd_eject()
879 swim3_action(fs, EJECT); in fd_eject()
885 swim3_select(fs, RELAX); in fd_eject()
887 if (swim3_readbit(fs, DISK_IN) == 0) in fd_eject()
890 swim3_select(fs, RELAX); in fd_eject()
892 fs->ejected = 1; in fd_eject()
893 release_drive(fs); in fd_eject()
903 struct floppy_state *fs = bdev->bd_disk->private_data; in floppy_locked_ioctl() local
909 if (fs->mdev->media_bay && in floppy_locked_ioctl()
910 check_media_bay(fs->mdev->media_bay) != MB_FD) in floppy_locked_ioctl()
915 if (fs->ref_count != 1) in floppy_locked_ioctl()
917 err = fd_eject(fs); in floppy_locked_ioctl()
942 struct floppy_state *fs = bdev->bd_disk->private_data; in floppy_open() local
943 struct swim3 __iomem *sw = fs->swim3; in floppy_open()
946 if (fs->ref_count == 0) { in floppy_open()
947 if (fs->mdev->media_bay && in floppy_open()
948 check_media_bay(fs->mdev->media_bay) != MB_FD) in floppy_open()
956 swim3_action(fs, MOTOR_ON); in floppy_open()
957 fs->write_prot = -1; in floppy_open()
958 fs->cur_cyl = -1; in floppy_open()
960 if (n >= HZ/30 && swim3_readbit(fs, SEEK_COMPLETE)) in floppy_open()
966 swim3_select(fs, RELAX); in floppy_open()
969 if (err == 0 && (swim3_readbit(fs, SEEK_COMPLETE) == 0 in floppy_open()
970 || swim3_readbit(fs, DISK_IN) == 0)) in floppy_open()
972 swim3_action(fs, SETMFM); in floppy_open()
973 swim3_select(fs, RELAX); in floppy_open()
975 } else if (fs->ref_count == -1 || mode & FMODE_EXCL) in floppy_open()
981 if (fs->ejected) in floppy_open()
986 if (fs->write_prot < 0) in floppy_open()
987 fs->write_prot = swim3_readbit(fs, WRITE_PROT); in floppy_open()
988 if (fs->write_prot) in floppy_open()
993 if (fs->ref_count == 0) { in floppy_open()
994 swim3_action(fs, MOTOR_OFF); in floppy_open()
996 swim3_select(fs, RELAX); in floppy_open()
1002 fs->ref_count = -1; in floppy_open()
1004 ++fs->ref_count; in floppy_open()
1022 struct floppy_state *fs = disk->private_data; in floppy_release() local
1023 struct swim3 __iomem *sw = fs->swim3; in floppy_release()
1026 if (fs->ref_count > 0 && --fs->ref_count == 0) { in floppy_release()
1027 swim3_action(fs, MOTOR_OFF); in floppy_release()
1029 swim3_select(fs, RELAX); in floppy_release()
1037 struct floppy_state *fs = disk->private_data; in floppy_check_events() local
1038 return fs->ejected ? DISK_EVENT_MEDIA_CHANGE : 0; in floppy_check_events()
1043 struct floppy_state *fs = disk->private_data; in floppy_revalidate() local
1047 if (fs->mdev->media_bay && in floppy_revalidate()
1048 check_media_bay(fs->mdev->media_bay) != MB_FD) in floppy_revalidate()
1051 sw = fs->swim3; in floppy_revalidate()
1052 grab_drive(fs, revalidating, 0); in floppy_revalidate()
1055 swim3_action(fs, MOTOR_ON); /* necessary? */ in floppy_revalidate()
1056 fs->write_prot = -1; in floppy_revalidate()
1057 fs->cur_cyl = -1; in floppy_revalidate()
1060 if (swim3_readbit(fs, SEEK_COMPLETE)) in floppy_revalidate()
1064 swim3_select(fs, RELAX); in floppy_revalidate()
1067 ret = swim3_readbit(fs, SEEK_COMPLETE) == 0 in floppy_revalidate()
1068 || swim3_readbit(fs, DISK_IN) == 0; in floppy_revalidate()
1070 swim3_action(fs, MOTOR_OFF); in floppy_revalidate()
1072 fs->ejected = 0; in floppy_revalidate()
1073 swim3_action(fs, SETMFM); in floppy_revalidate()
1075 swim3_select(fs, RELAX); in floppy_revalidate()
1077 release_drive(fs); in floppy_revalidate()
1091 struct floppy_state *fs = macio_get_drvdata(mdev); in swim3_mb_event() local
1094 if (!fs) in swim3_mb_event()
1097 sw = fs->swim3; in swim3_mb_event()
1111 struct floppy_state *fs = &floppy_states[index]; in swim3_add_device() local
1115 memset(fs, 0, sizeof(*fs)); in swim3_add_device()
1116 fs->mdev = mdev; in swim3_add_device()
1117 fs->index = index; in swim3_add_device()
1137 dev_set_drvdata(&mdev->ofdev.dev, fs); in swim3_add_device()
1142 fs->state = idle; in swim3_add_device()
1143 fs->swim3 = (struct swim3 __iomem *) in swim3_add_device()
1145 if (fs->swim3 == NULL) { in swim3_add_device()
1150 fs->dma = (struct dbdma_regs __iomem *) in swim3_add_device()
1152 if (fs->dma == NULL) { in swim3_add_device()
1154 iounmap(fs->swim3); in swim3_add_device()
1158 fs->swim3_intr = macio_irq(mdev, 0); in swim3_add_device()
1159 fs->dma_intr = macio_irq(mdev, 1); in swim3_add_device()
1160 fs->cur_cyl = -1; in swim3_add_device()
1161 fs->cur_sector = -1; in swim3_add_device()
1162 fs->secpercyl = 36; in swim3_add_device()
1163 fs->secpertrack = 18; in swim3_add_device()
1164 fs->total_secs = 2880; in swim3_add_device()
1165 init_waitqueue_head(&fs->wait); in swim3_add_device()
1167 fs->dma_cmd = (struct dbdma_cmd *) DBDMA_ALIGN(fs->dbdma_cmd_space); in swim3_add_device()
1168 memset(fs->dma_cmd, 0, 2 * sizeof(struct dbdma_cmd)); in swim3_add_device()
1169 st_le16(&fs->dma_cmd[1].command, DBDMA_STOP); in swim3_add_device()
1174 if (request_irq(fs->swim3_intr, swim3_interrupt, 0, "SWIM3", fs)) { in swim3_add_device()
1181 init_timer(&fs->timeout); in swim3_add_device()
1189 iounmap(fs->dma); in swim3_add_device()
1190 iounmap(fs->swim3); in swim3_add_device()