diff options
Diffstat (limited to 'drivers/mtd/ubi/scan.h')
| -rw-r--r-- | drivers/mtd/ubi/scan.h | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/drivers/mtd/ubi/scan.h b/drivers/mtd/ubi/scan.h deleted file mode 100644 index 252b1f1e82..0000000000 --- a/drivers/mtd/ubi/scan.h +++ /dev/null @@ -1,153 +0,0 @@ -/* - * Copyright (c) International Business Machines Corp., 2006 - * - * SPDX-License-Identifier: GPL-2.0+ - * - * Author: Artem Bityutskiy (Битюцкий Артём) - */ - -#ifndef __UBI_SCAN_H__ -#define __UBI_SCAN_H__ - -/* The erase counter value for this physical eraseblock is unknown */ -#define UBI_SCAN_UNKNOWN_EC (-1) - -/** - * struct ubi_scan_leb - scanning information about a physical eraseblock. - * @ec: erase counter (%UBI_SCAN_UNKNOWN_EC if it is unknown) - * @pnum: physical eraseblock number - * @lnum: logical eraseblock number - * @scrub: if this physical eraseblock needs scrubbing - * @sqnum: sequence number - * @u: unions RB-tree or @list links - * @u.rb: link in the per-volume RB-tree of &struct ubi_scan_leb objects - * @u.list: link in one of the eraseblock lists - * @leb_ver: logical eraseblock version (obsolete) - * - * One object of this type is allocated for each physical eraseblock during - * scanning. - */ -struct ubi_scan_leb { - int ec; - int pnum; - int lnum; - int scrub; - unsigned long long sqnum; - union { - struct rb_node rb; - struct list_head list; - } u; - uint32_t leb_ver; -}; - -/** - * struct ubi_scan_volume - scanning information about a volume. - * @vol_id: volume ID - * @highest_lnum: highest logical eraseblock number in this volume - * @leb_count: number of logical eraseblocks in this volume - * @vol_type: volume type - * @used_ebs: number of used logical eraseblocks in this volume (only for - * static volumes) - * @last_data_size: amount of data in the last logical eraseblock of this - * volume (always equivalent to the usable logical eraseblock size in case of - * dynamic volumes) - * @data_pad: how many bytes at the end of logical eraseblocks of this volume - * are not used (due to volume alignment) - * @compat: compatibility flags of this volume - * @rb: link in the volume RB-tree - * @root: root of the RB-tree containing all the eraseblock belonging to this - * volume (&struct ubi_scan_leb objects) - * - * One object of this type is allocated for each volume during scanning. - */ -struct ubi_scan_volume { - int vol_id; - int highest_lnum; - int leb_count; - int vol_type; - int used_ebs; - int last_data_size; - int data_pad; - int compat; - struct rb_node rb; - struct rb_root root; -}; - -/** - * struct ubi_scan_info - UBI scanning information. - * @volumes: root of the volume RB-tree - * @corr: list of corrupted physical eraseblocks - * @free: list of free physical eraseblocks - * @erase: list of physical eraseblocks which have to be erased - * @alien: list of physical eraseblocks which should not be used by UBI (e.g., - * @bad_peb_count: count of bad physical eraseblocks - * those belonging to "preserve"-compatible internal volumes) - * @vols_found: number of volumes found during scanning - * @highest_vol_id: highest volume ID - * @alien_peb_count: count of physical eraseblocks in the @alien list - * @is_empty: flag indicating whether the MTD device is empty or not - * @min_ec: lowest erase counter value - * @max_ec: highest erase counter value - * @max_sqnum: highest sequence number value - * @mean_ec: mean erase counter value - * @ec_sum: a temporary variable used when calculating @mean_ec - * @ec_count: a temporary variable used when calculating @mean_ec - * - * This data structure contains the result of scanning and may be used by other - * UBI units to build final UBI data structures, further error-recovery and so - * on. - */ -struct ubi_scan_info { - struct rb_root volumes; - struct list_head corr; - struct list_head free; - struct list_head erase; - struct list_head alien; - int bad_peb_count; - int vols_found; - int highest_vol_id; - int alien_peb_count; - int is_empty; - int min_ec; - int max_ec; - unsigned long long max_sqnum; - int mean_ec; - uint64_t ec_sum; - int ec_count; -}; - -struct ubi_device; -struct ubi_vid_hdr; - -/* - * ubi_scan_move_to_list - move a physical eraseblock from the volume tree to a - * list. - * - * @sv: volume scanning information - * @seb: scanning eraseblock infprmation - * @list: the list to move to - */ -static inline void ubi_scan_move_to_list(struct ubi_scan_volume *sv, - struct ubi_scan_leb *seb, - struct list_head *list) -{ - rb_erase(&seb->u.rb, &sv->root); - list_add_tail(&seb->u.list, list); -} - -int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si, - int pnum, int ec, const struct ubi_vid_hdr *vid_hdr, - int bitflips); -struct ubi_scan_volume *ubi_scan_find_sv(const struct ubi_scan_info *si, - int vol_id); -struct ubi_scan_leb *ubi_scan_find_seb(const struct ubi_scan_volume *sv, - int lnum); -void ubi_scan_rm_volume(struct ubi_scan_info *si, struct ubi_scan_volume *sv); -struct ubi_scan_leb *ubi_scan_get_free_peb(struct ubi_device *ubi, - struct ubi_scan_info *si); -int ubi_scan_erase_peb(struct ubi_device *ubi, const struct ubi_scan_info *si, - int pnum, int ec); -struct ubi_scan_info *ubi_scan(struct ubi_device *ubi); -void ubi_scan_destroy_si(struct ubi_scan_info *si); - -#endif /* !__UBI_SCAN_H__ */ |
