Lines Matching full:ubi
17 #include "ubi.h"
19 static int self_check_volumes(struct ubi_device *ubi);
24 /* Device attributes corresponding to files in '/<sysfs>/class/ubi/ubiX_Y' */
43 * "Show" method for files in '/<sysfs>/class/ubi/ubiX_Y/'.
47 * /<sysfs>/class/ubi/ubiX_Y/reserved_ebs;
49 * C. process 1 starts reading the /<sysfs>/class/ubi/ubiX_Y/reserved_ebs file;
52 * out that the volume was removed from the @ubi->volumes array.
59 struct ubi_device *ubi = vol->ubi; in vol_attribute_show() local
61 spin_lock(&ubi->volumes_lock); in vol_attribute_show()
62 if (!ubi->volumes[vol->vol_id]) { in vol_attribute_show()
63 spin_unlock(&ubi->volumes_lock); in vol_attribute_show()
68 spin_unlock(&ubi->volumes_lock); in vol_attribute_show()
96 /* We've done the operation, drop volume and UBI device references */ in vol_attribute_show()
97 spin_lock(&ubi->volumes_lock); in vol_attribute_show()
100 spin_unlock(&ubi->volumes_lock); in vol_attribute_show()
129 * @ubi: UBI device description object
136 * @ubi->device_mutex locked.
138 int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) in ubi_create_volume() argument
145 if (ubi->ro_mode) in ubi_create_volume()
154 vol->dev.parent = &ubi->dev; in ubi_create_volume()
161 spin_lock(&ubi->volumes_lock); in ubi_create_volume()
165 for (i = 0; i < ubi->vtbl_slots; i++) in ubi_create_volume()
166 if (!ubi->volumes[i]) { in ubi_create_volume()
172 ubi_err(ubi, "out of volume IDs"); in ubi_create_volume()
180 ubi->ubi_num, vol_id, (unsigned long long)req->bytes, in ubi_create_volume()
185 if (ubi->volumes[vol_id]) { in ubi_create_volume()
186 ubi_err(ubi, "volume %d already exists", vol_id); in ubi_create_volume()
191 for (i = 0; i < ubi->vtbl_slots; i++) in ubi_create_volume()
192 if (ubi->volumes[i] && in ubi_create_volume()
193 ubi->volumes[i]->name_len == req->name_len && in ubi_create_volume()
194 !strcmp(ubi->volumes[i]->name, req->name)) { in ubi_create_volume()
195 ubi_err(ubi, "volume \"%s\" exists (ID %d)", in ubi_create_volume()
201 vol->usable_leb_size = ubi->leb_size - ubi->leb_size % req->alignment; in ubi_create_volume()
206 if (vol->reserved_pebs > ubi->avail_pebs) { in ubi_create_volume()
207 ubi_err(ubi, "not enough PEBs, only %d available", in ubi_create_volume()
208 ubi->avail_pebs); in ubi_create_volume()
209 if (ubi->corr_peb_count) in ubi_create_volume()
210 ubi_err(ubi, "%d PEBs are corrupted and not used", in ubi_create_volume()
211 ubi->corr_peb_count); in ubi_create_volume()
215 ubi->avail_pebs -= vol->reserved_pebs; in ubi_create_volume()
216 ubi->rsvd_pebs += vol->reserved_pebs; in ubi_create_volume()
217 spin_unlock(&ubi->volumes_lock); in ubi_create_volume()
221 vol->data_pad = ubi->leb_size % vol->alignment; in ubi_create_volume()
225 vol->ubi = ubi; in ubi_create_volume()
231 err = ubi_wl_flush(ubi, vol_id, UBI_ALL); in ubi_create_volume()
259 spin_lock(&ubi->volumes_lock); in ubi_create_volume()
260 ubi->volumes[vol_id] = vol; in ubi_create_volume()
261 ubi->vol_count += 1; in ubi_create_volume()
262 spin_unlock(&ubi->volumes_lock); in ubi_create_volume()
268 vol->dev.devt = MKDEV(MAJOR(ubi->cdev.dev), vol_id + 1); in ubi_create_volume()
269 dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id); in ubi_create_volume()
272 ubi_err(ubi, "cannot add device"); in ubi_create_volume()
292 err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec); in ubi_create_volume()
296 ubi_volume_notify(ubi, vol, UBI_VOLUME_ADDED); in ubi_create_volume()
297 self_check_volumes(ubi); in ubi_create_volume()
308 spin_lock(&ubi->volumes_lock); in ubi_create_volume()
309 ubi->volumes[vol_id] = NULL; in ubi_create_volume()
310 ubi->vol_count -= 1; in ubi_create_volume()
311 spin_unlock(&ubi->volumes_lock); in ubi_create_volume()
313 spin_lock(&ubi->volumes_lock); in ubi_create_volume()
314 ubi->rsvd_pebs -= vol->reserved_pebs; in ubi_create_volume()
315 ubi->avail_pebs += vol->reserved_pebs; in ubi_create_volume()
317 spin_unlock(&ubi->volumes_lock); in ubi_create_volume()
319 ubi_err(ubi, "cannot create volume %d, error %d", vol_id, err); in ubi_create_volume()
330 * code in case of failure. The caller has to have the @ubi->device_mutex
336 struct ubi_device *ubi = vol->ubi; in ubi_remove_volume() local
339 dbg_gen("remove device %d, volume %d", ubi->ubi_num, vol_id); in ubi_remove_volume()
341 ubi_assert(vol == ubi->volumes[vol_id]); in ubi_remove_volume()
343 if (ubi->ro_mode) in ubi_remove_volume()
346 spin_lock(&ubi->volumes_lock); in ubi_remove_volume()
355 ubi->volumes[vol_id] = NULL; in ubi_remove_volume()
356 spin_unlock(&ubi->volumes_lock); in ubi_remove_volume()
359 err = ubi_change_vtbl_record(ubi, vol_id, NULL); in ubi_remove_volume()
365 err = ubi_eba_unmap_leb(ubi, vol, i); in ubi_remove_volume()
373 spin_lock(&ubi->volumes_lock); in ubi_remove_volume()
374 ubi->rsvd_pebs -= reserved_pebs; in ubi_remove_volume()
375 ubi->avail_pebs += reserved_pebs; in ubi_remove_volume()
376 ubi_update_reserved(ubi); in ubi_remove_volume()
377 ubi->vol_count -= 1; in ubi_remove_volume()
378 spin_unlock(&ubi->volumes_lock); in ubi_remove_volume()
380 ubi_volume_notify(ubi, vol, UBI_VOLUME_REMOVED); in ubi_remove_volume()
382 self_check_volumes(ubi); in ubi_remove_volume()
387 ubi_err(ubi, "cannot remove volume %d, error %d", vol_id, err); in ubi_remove_volume()
388 spin_lock(&ubi->volumes_lock); in ubi_remove_volume()
389 ubi->volumes[vol_id] = vol; in ubi_remove_volume()
391 spin_unlock(&ubi->volumes_lock); in ubi_remove_volume()
402 * @ubi->device_mutex locked.
408 struct ubi_device *ubi = vol->ubi; in ubi_resize_volume() local
413 if (ubi->ro_mode) in ubi_resize_volume()
417 ubi->ubi_num, vol_id, vol->reserved_pebs, reserved_pebs); in ubi_resize_volume()
421 ubi_err(ubi, "too small size %d, %d LEBs contain data", in ubi_resize_volume()
434 spin_lock(&ubi->volumes_lock); in ubi_resize_volume()
436 spin_unlock(&ubi->volumes_lock); in ubi_resize_volume()
440 spin_unlock(&ubi->volumes_lock); in ubi_resize_volume()
445 spin_lock(&ubi->volumes_lock); in ubi_resize_volume()
446 if (pebs > ubi->avail_pebs) { in ubi_resize_volume()
447 ubi_err(ubi, "not enough PEBs: requested %d, available %d", in ubi_resize_volume()
448 pebs, ubi->avail_pebs); in ubi_resize_volume()
449 if (ubi->corr_peb_count) in ubi_resize_volume()
450 ubi_err(ubi, "%d PEBs are corrupted and not used", in ubi_resize_volume()
451 ubi->corr_peb_count); in ubi_resize_volume()
452 spin_unlock(&ubi->volumes_lock); in ubi_resize_volume()
456 ubi->avail_pebs -= pebs; in ubi_resize_volume()
457 ubi->rsvd_pebs += pebs; in ubi_resize_volume()
460 spin_unlock(&ubi->volumes_lock); in ubi_resize_volume()
465 err = ubi_eba_unmap_leb(ubi, vol, reserved_pebs + i); in ubi_resize_volume()
469 spin_lock(&ubi->volumes_lock); in ubi_resize_volume()
470 ubi->rsvd_pebs += pebs; in ubi_resize_volume()
471 ubi->avail_pebs -= pebs; in ubi_resize_volume()
472 ubi_update_reserved(ubi); in ubi_resize_volume()
475 spin_unlock(&ubi->volumes_lock); in ubi_resize_volume()
480 * Otherwise it can happen that upon next attach UBI finds a LEB with in ubi_resize_volume()
484 err = ubi_wl_flush(ubi, vol_id, UBI_ALL); in ubi_resize_volume()
490 vtbl_rec = ubi->vtbl[vol_id]; in ubi_resize_volume()
492 err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec); in ubi_resize_volume()
504 ubi_volume_notify(ubi, vol, UBI_VOLUME_RESIZED); in ubi_resize_volume()
505 self_check_volumes(ubi); in ubi_resize_volume()
510 spin_lock(&ubi->volumes_lock); in ubi_resize_volume()
511 ubi->rsvd_pebs -= pebs; in ubi_resize_volume()
512 ubi->avail_pebs += pebs; in ubi_resize_volume()
513 spin_unlock(&ubi->volumes_lock); in ubi_resize_volume()
521 * ubi_rename_volumes - re-name UBI volumes.
522 * @ubi: UBI device description object
529 int ubi_rename_volumes(struct ubi_device *ubi, struct list_head *rename_list) in ubi_rename_volumes() argument
534 err = ubi_vtbl_rename_volumes(ubi, rename_list); in ubi_rename_volumes()
546 spin_lock(&ubi->volumes_lock); in ubi_rename_volumes()
549 spin_unlock(&ubi->volumes_lock); in ubi_rename_volumes()
550 ubi_volume_notify(ubi, vol, UBI_VOLUME_RENAMED); in ubi_rename_volumes()
555 self_check_volumes(ubi); in ubi_rename_volumes()
561 * @ubi: UBI device description object
568 int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol) in ubi_add_volume() argument
578 dev = MKDEV(MAJOR(ubi->cdev.dev), vol->vol_id + 1); in ubi_add_volume()
581 ubi_err(ubi, "cannot add character device for volume %d, error %d", in ubi_add_volume()
587 vol->dev.parent = &ubi->dev; in ubi_add_volume()
591 dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id); in ubi_add_volume()
596 self_check_volumes(ubi); in ubi_add_volume()
606 * @ubi: UBI device description object
610 * Used only when the UBI device is detached.
612 void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol) in ubi_free_volume() argument
616 ubi->volumes[vol->vol_id] = NULL; in ubi_free_volume()
623 * @ubi: UBI device description object
628 static int self_check_volume(struct ubi_device *ubi, int vol_id) in self_check_volume() argument
630 int idx = vol_id2idx(ubi, vol_id); in self_check_volume()
636 spin_lock(&ubi->volumes_lock); in self_check_volume()
637 reserved_pebs = be32_to_cpu(ubi->vtbl[vol_id].reserved_pebs); in self_check_volume()
638 vol = ubi->volumes[idx]; in self_check_volume()
642 ubi_err(ubi, "no volume info, but volume exists"); in self_check_volume()
645 spin_unlock(&ubi->volumes_lock); in self_check_volume()
651 ubi_err(ubi, "negative values"); in self_check_volume()
654 if (vol->alignment > ubi->leb_size || vol->alignment == 0) { in self_check_volume()
655 ubi_err(ubi, "bad alignment"); in self_check_volume()
659 n = vol->alignment & (ubi->min_io_size - 1); in self_check_volume()
661 ubi_err(ubi, "alignment is not multiple of min I/O unit"); in self_check_volume()
665 n = ubi->leb_size % vol->alignment; in self_check_volume()
667 ubi_err(ubi, "bad data_pad, has to be %lld", n); in self_check_volume()
673 ubi_err(ubi, "bad vol_type"); in self_check_volume()
678 ubi_err(ubi, "update marker and corrupted simultaneously"); in self_check_volume()
682 if (vol->reserved_pebs > ubi->good_peb_count) { in self_check_volume()
683 ubi_err(ubi, "too large reserved_pebs"); in self_check_volume()
687 n = ubi->leb_size - vol->data_pad; in self_check_volume()
688 if (vol->usable_leb_size != ubi->leb_size - vol->data_pad) { in self_check_volume()
689 ubi_err(ubi, "bad usable_leb_size, has to be %lld", n); in self_check_volume()
694 ubi_err(ubi, "too long volume name, max is %d", in self_check_volume()
701 ubi_err(ubi, "bad name_len %lld", n); in self_check_volume()
708 ubi_err(ubi, "corrupted dynamic volume"); in self_check_volume()
712 ubi_err(ubi, "bad used_ebs"); in self_check_volume()
716 ubi_err(ubi, "bad last_eb_bytes"); in self_check_volume()
720 ubi_err(ubi, "bad used_bytes"); in self_check_volume()
725 ubi_err(ubi, "bad skip_check"); in self_check_volume()
730 ubi_err(ubi, "bad used_ebs"); in self_check_volume()
735 ubi_err(ubi, "bad last_eb_bytes"); in self_check_volume()
740 ubi_err(ubi, "bad used_bytes"); in self_check_volume()
745 alignment = be32_to_cpu(ubi->vtbl[vol_id].alignment); in self_check_volume()
746 data_pad = be32_to_cpu(ubi->vtbl[vol_id].data_pad); in self_check_volume()
747 name_len = be16_to_cpu(ubi->vtbl[vol_id].name_len); in self_check_volume()
748 upd_marker = ubi->vtbl[vol_id].upd_marker; in self_check_volume()
749 name = &ubi->vtbl[vol_id].name[0]; in self_check_volume()
750 if (ubi->vtbl[vol_id].vol_type == UBI_VID_DYNAMIC) in self_check_volume()
758 ubi_err(ubi, "volume info is different"); in self_check_volume()
762 spin_unlock(&ubi->volumes_lock); in self_check_volume()
766 ubi_err(ubi, "self-check failed for volume %d", vol_id); in self_check_volume()
769 ubi_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id); in self_check_volume()
771 spin_unlock(&ubi->volumes_lock); in self_check_volume()
777 * @ubi: UBI device description object
781 static int self_check_volumes(struct ubi_device *ubi) in self_check_volumes() argument
785 if (!ubi_dbg_chk_gen(ubi)) in self_check_volumes()
788 for (i = 0; i < ubi->vtbl_slots; i++) { in self_check_volumes()
789 err = self_check_volume(ubi, i); in self_check_volumes()