Lines Matching full:ubi
11 * This file includes UBI initialization and building of UBI devices.
13 * When UBI is initialized, it attaches all the MTD devices specified as the
15 * specified, UBI does not attach any MTD device, but it is possible to do
16 * later using the "UBI control device".
32 #include "ubi.h"
53 * @ubi_num: UBI number
72 /* UBI module parameter to enable fastmap automatically on non-fastmap images */
80 /* UBI control character device */
87 /* All UBI devices in system */
90 /* Serializes UBI devices creations and removals */
93 /* Protects @ubi_devices and @ubi->ref_count */
96 /* "Show" method for files in '/<sysfs>/class/ubi/' */
97 /* UBI version attribute ('/<sysfs>/class/ubi/version') */
111 /* Root UBI "class" object (corresponds to '/<sysfs>/class/ubi/') */
120 /* UBI device attributes (correspond to files in '/<sysfs>/class/ubi/ubiX') */
148 * @ubi: UBI device description object
156 int ubi_volume_notify(struct ubi_device *ubi, struct ubi_volume *vol, int ntype) in ubi_volume_notify() argument
161 ubi_do_get_device_info(ubi, &nt.di); in ubi_volume_notify()
162 ubi_do_get_volume_info(ubi, vol, &nt.vi); in ubi_volume_notify()
169 ret = ubi_update_fastmap(ubi); in ubi_volume_notify()
171 ubi_msg(ubi, "Unable to write a new fastmap: %i", ret); in ubi_volume_notify()
179 * @ubi: UBI device description object
183 * This function walks all volumes of UBI device @ubi and sends the @ntype
188 int ubi_notify_all(struct ubi_device *ubi, int ntype, struct notifier_block *nb) in ubi_notify_all() argument
193 ubi_do_get_device_info(ubi, &nt.di); in ubi_notify_all()
195 mutex_lock(&ubi->device_mutex); in ubi_notify_all()
196 for (i = 0; i < ubi->vtbl_slots; i++) { in ubi_notify_all()
198 * Since the @ubi->device is locked, and we are not going to in ubi_notify_all()
199 * change @ubi->volumes, we do not have to lock in ubi_notify_all()
200 * @ubi->volumes_lock. in ubi_notify_all()
202 if (!ubi->volumes[i]) in ubi_notify_all()
205 ubi_do_get_volume_info(ubi, ubi->volumes[i], &nt.vi); in ubi_notify_all()
213 mutex_unlock(&ubi->device_mutex); in ubi_notify_all()
222 * This function walks all UBI devices and volumes and sends the
236 struct ubi_device *ubi = ubi_devices[i]; in ubi_enumerate_volumes() local
238 if (!ubi) in ubi_enumerate_volumes()
240 count += ubi_notify_all(ubi, UBI_VOLUME_ADDED, nb); in ubi_enumerate_volumes()
247 * ubi_get_device - get UBI device.
248 * @ubi_num: UBI device number
250 * This function returns UBI device description object for UBI device number
257 struct ubi_device *ubi; in ubi_get_device() local
260 ubi = ubi_devices[ubi_num]; in ubi_get_device()
261 if (ubi) { in ubi_get_device()
262 ubi_assert(ubi->ref_count >= 0); in ubi_get_device()
263 ubi->ref_count += 1; in ubi_get_device()
264 get_device(&ubi->dev); in ubi_get_device()
268 return ubi; in ubi_get_device()
272 * ubi_put_device - drop an UBI device reference.
273 * @ubi: UBI device description object
275 void ubi_put_device(struct ubi_device *ubi) in ubi_put_device() argument
278 ubi->ref_count -= 1; in ubi_put_device()
279 put_device(&ubi->dev); in ubi_put_device()
284 * ubi_get_by_major - get UBI device by character device major number.
293 struct ubi_device *ubi; in ubi_get_by_major() local
297 ubi = ubi_devices[i]; in ubi_get_by_major()
298 if (ubi && MAJOR(ubi->cdev.dev) == major) { in ubi_get_by_major()
299 ubi_assert(ubi->ref_count >= 0); in ubi_get_by_major()
300 ubi->ref_count += 1; in ubi_get_by_major()
301 get_device(&ubi->dev); in ubi_get_by_major()
303 return ubi; in ubi_get_by_major()
312 * ubi_major2num - get UBI device number by character device major number.
315 * This function searches UBI device number object by its major number. If UBI
316 * device was not found, this function returns -ENODEV, otherwise the UBI device
325 struct ubi_device *ubi = ubi_devices[i]; in ubi_major2num() local
327 if (ubi && MAJOR(ubi->cdev.dev) == major) { in ubi_major2num()
328 ubi_num = ubi->ubi_num; in ubi_major2num()
337 /* "Show" method for files in '/<sysfs>/class/ubi/ubiX/' */
342 struct ubi_device *ubi; in dev_attribute_show() local
346 * UBI device reference from the contained 'struct ubi_device'. But it in dev_attribute_show()
352 * we still can use 'ubi->ubi_num'. in dev_attribute_show()
354 ubi = container_of(dev, struct ubi_device, dev); in dev_attribute_show()
357 ret = sprintf(buf, "%d\n", ubi->leb_size); in dev_attribute_show()
359 ret = sprintf(buf, "%d\n", ubi->avail_pebs); in dev_attribute_show()
361 ret = sprintf(buf, "%d\n", ubi->good_peb_count); in dev_attribute_show()
363 ret = sprintf(buf, "%d\n", ubi->vol_count - UBI_INT_VOL_COUNT); in dev_attribute_show()
365 ret = sprintf(buf, "%d\n", ubi->max_ec); in dev_attribute_show()
367 ret = sprintf(buf, "%d\n", ubi->beb_rsvd_pebs); in dev_attribute_show()
369 ret = sprintf(buf, "%d\n", ubi->bad_peb_count); in dev_attribute_show()
371 ret = sprintf(buf, "%d\n", ubi->vtbl_slots); in dev_attribute_show()
373 ret = sprintf(buf, "%d\n", ubi->min_io_size); in dev_attribute_show()
375 ret = sprintf(buf, "%d\n", ubi->thread_enabled); in dev_attribute_show()
377 ret = sprintf(buf, "%d\n", ubi->mtd->index); in dev_attribute_show()
379 ret = sprintf(buf, "%d\n", ubi->ro_mode); in dev_attribute_show()
405 struct ubi_device *ubi = container_of(dev, struct ubi_device, dev); in dev_release() local
407 kfree(ubi); in dev_release()
412 * @ubi: UBI device description object
414 static void kill_volumes(struct ubi_device *ubi) in kill_volumes() argument
418 for (i = 0; i < ubi->vtbl_slots; i++) in kill_volumes()
419 if (ubi->volumes[i]) in kill_volumes()
420 ubi_free_volume(ubi, ubi->volumes[i]); in kill_volumes()
424 * uif_init - initialize user interfaces for an UBI device.
425 * @ubi: UBI device description object
427 * This function initializes various user interfaces for an UBI device. If the
434 static int uif_init(struct ubi_device *ubi) in uif_init() argument
439 sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num); in uif_init()
442 * Major numbers for the UBI character devices are allocated in uif_init()
444 * equivalent to ones of the corresponding UBI character device. Minor in uif_init()
445 * numbers of UBI character devices are 0, while minor numbers of in uif_init()
447 * number and ubi->vtbl_slots + 1 minor numbers. in uif_init()
449 err = alloc_chrdev_region(&dev, 0, ubi->vtbl_slots + 1, ubi->ubi_name); in uif_init()
451 ubi_err(ubi, "cannot register UBI character devices"); in uif_init()
455 ubi->dev.devt = dev; in uif_init()
458 cdev_init(&ubi->cdev, &ubi_cdev_operations); in uif_init()
459 dbg_gen("%s major is %u", ubi->ubi_name, MAJOR(dev)); in uif_init()
460 ubi->cdev.owner = THIS_MODULE; in uif_init()
462 dev_set_name(&ubi->dev, UBI_NAME_STR "%d", ubi->ubi_num); in uif_init()
463 err = cdev_device_add(&ubi->cdev, &ubi->dev); in uif_init()
467 for (i = 0; i < ubi->vtbl_slots; i++) in uif_init()
468 if (ubi->volumes[i]) { in uif_init()
469 err = ubi_add_volume(ubi, ubi->volumes[i]); in uif_init()
471 ubi_err(ubi, "cannot add volume %d", i); in uif_init()
472 ubi->volumes[i] = NULL; in uif_init()
480 kill_volumes(ubi); in uif_init()
481 cdev_device_del(&ubi->cdev, &ubi->dev); in uif_init()
483 unregister_chrdev_region(ubi->cdev.dev, ubi->vtbl_slots + 1); in uif_init()
484 ubi_err(ubi, "cannot initialize UBI %s, error %d", in uif_init()
485 ubi->ubi_name, err); in uif_init()
490 * uif_close - close user interfaces for an UBI device.
491 * @ubi: UBI device description object
493 * Note, since this function un-registers UBI volume device objects (@vol->dev),
497 static void uif_close(struct ubi_device *ubi) in uif_close() argument
499 kill_volumes(ubi); in uif_close()
500 cdev_device_del(&ubi->cdev, &ubi->dev); in uif_close()
501 unregister_chrdev_region(ubi->cdev.dev, ubi->vtbl_slots + 1); in uif_close()
506 * @ubi: UBI device description object
509 static void ubi_free_volumes_from(struct ubi_device *ubi, int from) in ubi_free_volumes_from() argument
513 for (i = from; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) { in ubi_free_volumes_from()
514 if (!ubi->volumes[i]) in ubi_free_volumes_from()
516 ubi_eba_replace_table(ubi->volumes[i], NULL); in ubi_free_volumes_from()
517 ubi_fastmap_destroy_checkmap(ubi->volumes[i]); in ubi_free_volumes_from()
518 kfree(ubi->volumes[i]); in ubi_free_volumes_from()
519 ubi->volumes[i] = NULL; in ubi_free_volumes_from()
525 * @ubi: UBI device description object
527 void ubi_free_all_volumes(struct ubi_device *ubi) in ubi_free_all_volumes() argument
529 ubi_free_volumes_from(ubi, 0); in ubi_free_all_volumes()
534 * @ubi: UBI device description object
536 void ubi_free_internal_volumes(struct ubi_device *ubi) in ubi_free_internal_volumes() argument
538 ubi_free_volumes_from(ubi, ubi->vtbl_slots); in ubi_free_internal_volumes()
541 static int get_bad_peb_limit(const struct ubi_device *ubi, int max_beb_per1024) in get_bad_peb_limit() argument
552 limit = mtd_max_bad_blocks(ubi->mtd, 0, ubi->mtd->size); in get_bad_peb_limit()
565 * the MTD partition we are attaching (ubi->mtd). in get_bad_peb_limit()
567 device_size = mtd_get_device_size(ubi->mtd); in get_bad_peb_limit()
568 device_pebs = mtd_div_by_eb(device_size, ubi->mtd); in get_bad_peb_limit()
579 * io_init - initialize I/O sub-system for a given UBI device.
580 * @ubi: UBI device description object
583 * If @ubi->vid_hdr_offset or @ubi->leb_start is zero, default offsets are
594 static int io_init(struct ubi_device *ubi, int max_beb_per1024) in io_init() argument
599 if (ubi->mtd->numeraseregions != 0) { in io_init()
609 ubi_err(ubi, "multiple regions, not implemented"); in io_init()
613 if (ubi->vid_hdr_offset < 0) in io_init()
621 ubi->peb_size = ubi->mtd->erasesize; in io_init()
622 ubi->peb_count = mtd_div_by_eb(ubi->mtd->size, ubi->mtd); in io_init()
623 ubi->flash_size = ubi->mtd->size; in io_init()
625 if (mtd_can_have_bb(ubi->mtd)) { in io_init()
626 ubi->bad_allowed = 1; in io_init()
627 ubi->bad_peb_limit = get_bad_peb_limit(ubi, max_beb_per1024); in io_init()
630 if (ubi->mtd->type == MTD_NORFLASH) in io_init()
631 ubi->nor_flash = 1; in io_init()
633 ubi->min_io_size = ubi->mtd->writesize; in io_init()
634 ubi->hdrs_min_io_size = ubi->mtd->writesize >> ubi->mtd->subpage_sft; in io_init()
641 if (!is_power_of_2(ubi->min_io_size)) { in io_init()
642 ubi_err(ubi, "min. I/O unit (%d) is not power of 2", in io_init()
643 ubi->min_io_size); in io_init()
647 ubi_assert(ubi->hdrs_min_io_size > 0); in io_init()
648 ubi_assert(ubi->hdrs_min_io_size <= ubi->min_io_size); in io_init()
649 ubi_assert(ubi->min_io_size % ubi->hdrs_min_io_size == 0); in io_init()
651 ubi->max_write_size = ubi->mtd->writebufsize; in io_init()
656 if (ubi->max_write_size < ubi->min_io_size || in io_init()
657 ubi->max_write_size % ubi->min_io_size || in io_init()
658 !is_power_of_2(ubi->max_write_size)) { in io_init()
659 ubi_err(ubi, "bad write buffer size %d for %d min. I/O unit", in io_init()
660 ubi->max_write_size, ubi->min_io_size); in io_init()
665 ubi->ec_hdr_alsize = ALIGN(UBI_EC_HDR_SIZE, ubi->hdrs_min_io_size); in io_init()
666 ubi->vid_hdr_alsize = ALIGN(UBI_VID_HDR_SIZE, ubi->hdrs_min_io_size); in io_init()
668 dbg_gen("min_io_size %d", ubi->min_io_size); in io_init()
669 dbg_gen("max_write_size %d", ubi->max_write_size); in io_init()
670 dbg_gen("hdrs_min_io_size %d", ubi->hdrs_min_io_size); in io_init()
671 dbg_gen("ec_hdr_alsize %d", ubi->ec_hdr_alsize); in io_init()
672 dbg_gen("vid_hdr_alsize %d", ubi->vid_hdr_alsize); in io_init()
674 if (ubi->vid_hdr_offset == 0) in io_init()
676 ubi->vid_hdr_offset = ubi->vid_hdr_aloffset = in io_init()
677 ubi->ec_hdr_alsize; in io_init()
679 ubi->vid_hdr_aloffset = ubi->vid_hdr_offset & in io_init()
680 ~(ubi->hdrs_min_io_size - 1); in io_init()
681 ubi->vid_hdr_shift = ubi->vid_hdr_offset - in io_init()
682 ubi->vid_hdr_aloffset; in io_init()
686 * Memory allocation for VID header is ubi->vid_hdr_alsize in io_init()
689 * ubi->vid_hdr_alsize, so that all vid header operations in io_init()
692 if ((ubi->vid_hdr_shift + UBI_VID_HDR_SIZE) > ubi->vid_hdr_alsize) { in io_init()
693 ubi_err(ubi, "Invalid VID header offset %d, VID header shift(%d)" in io_init()
695 ubi->vid_hdr_offset, ubi->vid_hdr_shift, in io_init()
696 UBI_VID_HDR_SIZE, ubi->vid_hdr_alsize); in io_init()
701 ubi->leb_start = ubi->vid_hdr_offset + UBI_VID_HDR_SIZE; in io_init()
702 ubi->leb_start = ALIGN(ubi->leb_start, ubi->min_io_size); in io_init()
704 dbg_gen("vid_hdr_offset %d", ubi->vid_hdr_offset); in io_init()
705 dbg_gen("vid_hdr_aloffset %d", ubi->vid_hdr_aloffset); in io_init()
706 dbg_gen("vid_hdr_shift %d", ubi->vid_hdr_shift); in io_init()
707 dbg_gen("leb_start %d", ubi->leb_start); in io_init()
710 if (ubi->vid_hdr_shift % 4) { in io_init()
711 ubi_err(ubi, "unaligned VID header shift %d", in io_init()
712 ubi->vid_hdr_shift); in io_init()
717 if (ubi->vid_hdr_offset < UBI_EC_HDR_SIZE || in io_init()
718 ubi->leb_start < ubi->vid_hdr_offset + UBI_VID_HDR_SIZE || in io_init()
719 ubi->leb_start > ubi->peb_size - UBI_VID_HDR_SIZE || in io_init()
720 ubi->leb_start & (ubi->min_io_size - 1)) { in io_init()
721 ubi_err(ubi, "bad VID header (%d) or data offsets (%d)", in io_init()
722 ubi->vid_hdr_offset, ubi->leb_start); in io_init()
730 ubi->max_erroneous = ubi->peb_count / 10; in io_init()
731 if (ubi->max_erroneous < 16) in io_init()
732 ubi->max_erroneous = 16; in io_init()
733 dbg_gen("max_erroneous %d", ubi->max_erroneous); in io_init()
737 * I/O unit. In this case we can only accept this UBI image in in io_init()
740 if (ubi->vid_hdr_offset + UBI_VID_HDR_SIZE <= ubi->hdrs_min_io_size) { in io_init()
741 ubi_warn(ubi, "EC and VID headers are in the same minimal I/O unit, switch to read-only mode"); in io_init()
742 ubi->ro_mode = 1; in io_init()
745 ubi->leb_size = ubi->peb_size - ubi->leb_start; in io_init()
747 if (!(ubi->mtd->flags & MTD_WRITEABLE)) { in io_init()
748 ubi_msg(ubi, "MTD device %d is write-protected, attach in read-only mode", in io_init()
749 ubi->mtd->index); in io_init()
750 ubi->ro_mode = 1; in io_init()
754 * Note, ideally, we have to initialize @ubi->bad_peb_count here. But in io_init()
757 * each physical eraseblock. So, we leave @ubi->bad_peb_count in io_init()
766 * @ubi: UBI device description object
770 * the volume table to the largest possible size. See comments in ubi-header.h
774 static int autoresize(struct ubi_device *ubi, int vol_id) in autoresize() argument
777 struct ubi_volume *vol = ubi->volumes[vol_id]; in autoresize()
780 if (ubi->ro_mode) { in autoresize()
781 ubi_warn(ubi, "skip auto-resize because of R/O mode"); in autoresize()
790 ubi->vtbl[vol_id].flags &= ~UBI_VTBL_AUTORESIZE_FLG; in autoresize()
792 if (ubi->avail_pebs == 0) { in autoresize()
799 vtbl_rec = ubi->vtbl[vol_id]; in autoresize()
800 err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec); in autoresize()
802 ubi_err(ubi, "cannot clean auto-resize flag for volume %d", in autoresize()
807 old_reserved_pebs + ubi->avail_pebs); in autoresize()
809 ubi_err(ubi, "cannot auto-resize volume %d", in autoresize()
816 ubi_msg(ubi, "volume %d (\"%s\") re-sized from %d to %d LEBs", in autoresize()
824 * @ubi_num: number to assign to the new UBI device
829 * This function attaches MTD device @mtd_dev to UBI and assign @ubi_num number
830 * to the newly created UBI device, unless @ubi_num is %UBI_DEV_NUM_AUTO, in
832 * automatically. Returns the new UBI device number in case of success and a
835 * If @disable_fm is true, ubi doesn't create new fastmap even the module param
845 struct ubi_device *ubi; in ubi_attach_mtd_dev() local
857 * Note, this function assumes that UBI devices creations and deletions in ubi_attach_mtd_dev()
861 ubi = ubi_devices[i]; in ubi_attach_mtd_dev()
862 if (ubi && mtd->index == ubi->mtd->index) { in ubi_attach_mtd_dev()
863 pr_err("ubi: mtd%d is already attached to ubi%d\n", in ubi_attach_mtd_dev()
870 * Make sure this MTD device is not emulated on top of an UBI volume in ubi_attach_mtd_dev()
872 * different problems like the UBI module takes a reference to itself in ubi_attach_mtd_dev()
878 pr_err("ubi: refuse attaching mtd%d - it is already emulated on top of UBI\n", in ubi_attach_mtd_dev()
884 * Both UBI and UBIFS have been designed for SLC NAND and NOR flashes. in ubi_attach_mtd_dev()
885 * MLC NAND is different and needs special care, otherwise UBI or UBIFS in ubi_attach_mtd_dev()
892 pr_err("ubi: refuse attaching mtd%d - MLC NAND is not supported\n", in ubi_attach_mtd_dev()
897 /* UBI cannot work on flashes with zero erasesize. */ in ubi_attach_mtd_dev()
899 pr_err("ubi: refuse attaching mtd%d - zero erasesize flash is not supported\n", in ubi_attach_mtd_dev()
910 pr_err("ubi: only %d UBI devices may be created\n", in ubi_attach_mtd_dev()
920 pr_err("ubi: ubi%i already exists\n", ubi_num); in ubi_attach_mtd_dev()
925 ubi = kzalloc(sizeof(struct ubi_device), GFP_KERNEL); in ubi_attach_mtd_dev()
926 if (!ubi) in ubi_attach_mtd_dev()
929 device_initialize(&ubi->dev); in ubi_attach_mtd_dev()
930 ubi->dev.release = dev_release; in ubi_attach_mtd_dev()
931 ubi->dev.class = &ubi_class; in ubi_attach_mtd_dev()
932 ubi->dev.groups = ubi_dev_groups; in ubi_attach_mtd_dev()
933 ubi->dev.parent = &mtd->dev; in ubi_attach_mtd_dev()
935 ubi->mtd = mtd; in ubi_attach_mtd_dev()
936 ubi->ubi_num = ubi_num; in ubi_attach_mtd_dev()
937 ubi->vid_hdr_offset = vid_hdr_offset; in ubi_attach_mtd_dev()
938 ubi->autoresize_vol_id = -1; in ubi_attach_mtd_dev()
941 ubi->fm_pool.used = ubi->fm_pool.size = 0; in ubi_attach_mtd_dev()
942 ubi->fm_wl_pool.used = ubi->fm_wl_pool.size = 0; in ubi_attach_mtd_dev()
948 ubi->fm_pool.max_size = min(((int)mtd_div_by_eb(ubi->mtd->size, in ubi_attach_mtd_dev()
949 ubi->mtd) / 100) * 5, UBI_FM_MAX_POOL_SIZE); in ubi_attach_mtd_dev()
950 ubi->fm_pool.max_size = max(ubi->fm_pool.max_size, in ubi_attach_mtd_dev()
953 ubi->fm_wl_pool.max_size = ubi->fm_pool.max_size / 2; in ubi_attach_mtd_dev()
954 ubi->fm_disabled = (!fm_autoconvert || disable_fm) ? 1 : 0; in ubi_attach_mtd_dev()
956 ubi_enable_dbg_chk_fastmap(ubi); in ubi_attach_mtd_dev()
958 if (!ubi->fm_disabled && (int)mtd_div_by_eb(ubi->mtd->size, ubi->mtd) in ubi_attach_mtd_dev()
960 ubi_err(ubi, "More than %i PEBs are needed for fastmap, sorry.", in ubi_attach_mtd_dev()
962 ubi->fm_disabled = 1; in ubi_attach_mtd_dev()
965 ubi_msg(ubi, "default fastmap pool size: %d", ubi->fm_pool.max_size); in ubi_attach_mtd_dev()
966 ubi_msg(ubi, "default fastmap WL pool size: %d", in ubi_attach_mtd_dev()
967 ubi->fm_wl_pool.max_size); in ubi_attach_mtd_dev()
969 ubi->fm_disabled = 1; in ubi_attach_mtd_dev()
971 mutex_init(&ubi->buf_mutex); in ubi_attach_mtd_dev()
972 mutex_init(&ubi->ckvol_mutex); in ubi_attach_mtd_dev()
973 mutex_init(&ubi->device_mutex); in ubi_attach_mtd_dev()
974 spin_lock_init(&ubi->volumes_lock); in ubi_attach_mtd_dev()
975 init_rwsem(&ubi->fm_protect); in ubi_attach_mtd_dev()
976 init_rwsem(&ubi->fm_eba_sem); in ubi_attach_mtd_dev()
978 ubi_msg(ubi, "attaching mtd%d", mtd->index); in ubi_attach_mtd_dev()
980 err = io_init(ubi, max_beb_per1024); in ubi_attach_mtd_dev()
985 ubi->peb_buf = vmalloc(ubi->peb_size); in ubi_attach_mtd_dev()
986 if (!ubi->peb_buf) in ubi_attach_mtd_dev()
990 ubi->fm_size = ubi_calc_fm_size(ubi); in ubi_attach_mtd_dev()
991 ubi->fm_buf = vzalloc(ubi->fm_size); in ubi_attach_mtd_dev()
992 if (!ubi->fm_buf) in ubi_attach_mtd_dev()
995 err = ubi_attach(ubi, disable_fm ? 1 : 0); in ubi_attach_mtd_dev()
997 ubi_err(ubi, "failed to attach mtd%d, error %d", in ubi_attach_mtd_dev()
1002 if (ubi->autoresize_vol_id != -1) { in ubi_attach_mtd_dev()
1003 err = autoresize(ubi, ubi->autoresize_vol_id); in ubi_attach_mtd_dev()
1008 err = uif_init(ubi); in ubi_attach_mtd_dev()
1012 err = ubi_debugfs_init_dev(ubi); in ubi_attach_mtd_dev()
1016 ubi->bgt_thread = kthread_create(ubi_thread, ubi, "%s", ubi->bgt_name); in ubi_attach_mtd_dev()
1017 if (IS_ERR(ubi->bgt_thread)) { in ubi_attach_mtd_dev()
1018 err = PTR_ERR(ubi->bgt_thread); in ubi_attach_mtd_dev()
1019 ubi_err(ubi, "cannot spawn \"%s\", error %d", in ubi_attach_mtd_dev()
1020 ubi->bgt_name, err); in ubi_attach_mtd_dev()
1024 ubi_msg(ubi, "attached mtd%d (name \"%s\", size %llu MiB)", in ubi_attach_mtd_dev()
1025 mtd->index, mtd->name, ubi->flash_size >> 20); in ubi_attach_mtd_dev()
1026 ubi_msg(ubi, "PEB size: %d bytes (%d KiB), LEB size: %d bytes", in ubi_attach_mtd_dev()
1027 ubi->peb_size, ubi->peb_size >> 10, ubi->leb_size); in ubi_attach_mtd_dev()
1028 ubi_msg(ubi, "min./max. I/O unit sizes: %d/%d, sub-page size %d", in ubi_attach_mtd_dev()
1029 ubi->min_io_size, ubi->max_write_size, ubi->hdrs_min_io_size); in ubi_attach_mtd_dev()
1030 ubi_msg(ubi, "VID header offset: %d (aligned %d), data offset: %d", in ubi_attach_mtd_dev()
1031 ubi->vid_hdr_offset, ubi->vid_hdr_aloffset, ubi->leb_start); in ubi_attach_mtd_dev()
1032 ubi_msg(ubi, "good PEBs: %d, bad PEBs: %d, corrupted PEBs: %d", in ubi_attach_mtd_dev()
1033 ubi->good_peb_count, ubi->bad_peb_count, ubi->corr_peb_count); in ubi_attach_mtd_dev()
1034 ubi_msg(ubi, "user volume: %d, internal volumes: %d, max. volumes count: %d", in ubi_attach_mtd_dev()
1035 ubi->vol_count - UBI_INT_VOL_COUNT, UBI_INT_VOL_COUNT, in ubi_attach_mtd_dev()
1036 ubi->vtbl_slots); in ubi_attach_mtd_dev()
1037 ubi_msg(ubi, "max/mean erase counter: %d/%d, WL threshold: %d, image sequence number: %u", in ubi_attach_mtd_dev()
1038 ubi->max_ec, ubi->mean_ec, CONFIG_MTD_UBI_WL_THRESHOLD, in ubi_attach_mtd_dev()
1039 ubi->image_seq); in ubi_attach_mtd_dev()
1040 ubi_msg(ubi, "available PEBs: %d, total reserved PEBs: %d, PEBs reserved for bad PEB handling: %d", in ubi_attach_mtd_dev()
1041 ubi->avail_pebs, ubi->rsvd_pebs, ubi->beb_rsvd_pebs); in ubi_attach_mtd_dev()
1045 * checks @ubi->thread_enabled. Otherwise we may fail to wake it up. in ubi_attach_mtd_dev()
1047 spin_lock(&ubi->wl_lock); in ubi_attach_mtd_dev()
1048 ubi->thread_enabled = 1; in ubi_attach_mtd_dev()
1049 wake_up_process(ubi->bgt_thread); in ubi_attach_mtd_dev()
1050 spin_unlock(&ubi->wl_lock); in ubi_attach_mtd_dev()
1052 ubi_devices[ubi_num] = ubi; in ubi_attach_mtd_dev()
1053 ubi_notify_all(ubi, UBI_VOLUME_ADDED, NULL); in ubi_attach_mtd_dev()
1057 ubi_debugfs_exit_dev(ubi); in ubi_attach_mtd_dev()
1059 uif_close(ubi); in ubi_attach_mtd_dev()
1061 ubi_wl_close(ubi); in ubi_attach_mtd_dev()
1062 ubi_free_all_volumes(ubi); in ubi_attach_mtd_dev()
1063 vfree(ubi->vtbl); in ubi_attach_mtd_dev()
1065 vfree(ubi->peb_buf); in ubi_attach_mtd_dev()
1066 vfree(ubi->fm_buf); in ubi_attach_mtd_dev()
1067 put_device(&ubi->dev); in ubi_attach_mtd_dev()
1073 * @ubi_num: UBI device number to detach from
1076 * This function destroys an UBI device number @ubi_num and detaches the
1078 * UBI device is busy and cannot be destroyed, and %-EINVAL if it does not
1086 struct ubi_device *ubi; in ubi_detach_mtd_dev() local
1091 ubi = ubi_get_device(ubi_num); in ubi_detach_mtd_dev()
1092 if (!ubi) in ubi_detach_mtd_dev()
1096 put_device(&ubi->dev); in ubi_detach_mtd_dev()
1097 ubi->ref_count -= 1; in ubi_detach_mtd_dev()
1098 if (ubi->ref_count) { in ubi_detach_mtd_dev()
1104 ubi_err(ubi, "%s reference count %d, destroy anyway", in ubi_detach_mtd_dev()
1105 ubi->ubi_name, ubi->ref_count); in ubi_detach_mtd_dev()
1110 ubi_assert(ubi_num == ubi->ubi_num); in ubi_detach_mtd_dev()
1111 ubi_notify_all(ubi, UBI_VOLUME_REMOVED, NULL); in ubi_detach_mtd_dev()
1112 ubi_msg(ubi, "detaching mtd%d", ubi->mtd->index); in ubi_detach_mtd_dev()
1118 if (!ubi_dbg_chk_fastmap(ubi)) in ubi_detach_mtd_dev()
1119 ubi_update_fastmap(ubi); in ubi_detach_mtd_dev()
1125 if (ubi->bgt_thread) in ubi_detach_mtd_dev()
1126 kthread_stop(ubi->bgt_thread); in ubi_detach_mtd_dev()
1129 cancel_work_sync(&ubi->fm_work); in ubi_detach_mtd_dev()
1131 ubi_debugfs_exit_dev(ubi); in ubi_detach_mtd_dev()
1132 uif_close(ubi); in ubi_detach_mtd_dev()
1134 ubi_wl_close(ubi); in ubi_detach_mtd_dev()
1135 ubi_free_internal_volumes(ubi); in ubi_detach_mtd_dev()
1136 vfree(ubi->vtbl); in ubi_detach_mtd_dev()
1137 vfree(ubi->peb_buf); in ubi_detach_mtd_dev()
1138 vfree(ubi->fm_buf); in ubi_detach_mtd_dev()
1139 ubi_msg(ubi, "mtd%d is detached", ubi->mtd->index); in ubi_detach_mtd_dev()
1140 put_mtd_device(ubi->mtd); in ubi_detach_mtd_dev()
1141 put_device(&ubi->dev); in ubi_detach_mtd_dev()
1226 pr_err("UBI error: too many MTD devices, maximum is %d\n", in ubi_init()
1238 pr_err("UBI error: cannot register device\n"); in ubi_init()
1265 pr_err("UBI error: cannot open mtd %s, error %d\n", in ubi_init()
1279 pr_err("UBI error: cannot attach mtd%d\n", in ubi_init()
1284 * Originally UBI stopped initializing on any error. in ubi_init()
1286 * behavior is not very good when UBI is compiled into in ubi_init()
1288 * through the command line. Indeed, UBI failure in ubi_init()
1303 pr_err("UBI error: block: cannot initialize, error %d\n", err); in ubi_init()
1326 pr_err("UBI error: cannot initialize UBI, error %d\n", err); in ubi_init()
1364 pr_err("UBI error: incorrect bytes count: \"%s\"\n", str); in bytes_str_to_int()
1381 pr_err("UBI error: incorrect bytes count: \"%s\"\n", str); in bytes_str_to_int()
1389 * ubi_mtd_param_parse - parse the 'mtd=' UBI parameter.
1408 pr_err("UBI error: too many parameters, max. is %d\n", in ubi_mtd_param_parse()
1415 pr_err("UBI error: parameter \"%s\" is too long, max. is %d\n", in ubi_mtd_param_parse()
1421 pr_warn("UBI warning: empty 'mtd=' parameter - ignored\n"); in ubi_mtd_param_parse()
1435 pr_err("UBI error: too many arguments at \"%s\"\n", val); in ubi_mtd_param_parse()
1455 pr_err("UBI error: bad value for max_beb_per1024 parameter: %s\n", in ubi_mtd_param_parse()
1466 pr_err("UBI error: bad value for ubi_num parameter: %s\n", in ubi_mtd_param_parse()
1478 pr_err("UBI error: bad value for enable_fm parameter: %s\n", in ubi_mtd_param_parse()
1493 …"Optional \"vid_hdr_offs\" parameter specifies UBI VID header position to be used by UBI. (default…
1496 …"Optional \"ubi_num\" parameter specifies UBI device number which have to be assigned to the newly…
1502 …"Example 4: mtd=/dev/mtd1,0,0,5 - attach MTD device /dev/mtd1 to UBI 5 and using default values fo…
1503 …td=2,0,0,6,1 - attach MTD device /dev/mtd1 to UBI 5 and disable fastmap; attach MTD device /dev/mt…
1504 "\t(e.g. if the NAND *chipset* has 4096 PEB, 100 will be reserved for this UBI device).");
1512 MODULE_DESCRIPTION("UBI - Unsorted Block Images");