UBI: remove scan.h (0479ab48) · Commits · e / devices / android_kernel_teracube_mt6765

drivers/mtd/ubi/scan.h

deleted100644 → 0

+0 −173

Original line number	Diff line number	Diff line
		/*
		* Copyright (c) International Business Machines Corp., 2006
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
		* the GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*
		* Author: Artem Bityutskiy (Битюцкий Артём)
		*/

		#ifndef __UBI_SCAN_H__
		#define __UBI_SCAN_H__

		/*
		* When a field of the attaching information has this value - its real value is
		* unknown.
		*/
		#define UBI_UNKNOWN (-1)

		/**
		* struct ubi_ainf_peb - attach information about a physical eraseblock.
		* @ec: erase counter (%UBI_UNKNOWN if it is unknown)
		* @pnum: physical eraseblock number
		* @lnum: logical eraseblock number
		* @scrub: if this physical eraseblock needs scrubbing
		* @copy_flag: this LEB is a copy (@copy_flag is set in VID header of this LEB)
		* @sqnum: sequence number
		* @u: unions RB-tree or @list links
		* @u.rb: link in the per-volume RB-tree of &struct ubi_ainf_peb objects
		* @u.list: link in one of the eraseblock lists
		*
		* One object of this type is allocated for each physical eraseblock when
		* attaching an MTD device.
		*/
		struct ubi_ainf_peb {
		int ec;
		int pnum;
		int lnum;
		unsigned int scrub:1;
		unsigned int copy_flag:1;
		unsigned long long sqnum;
		union {
		struct rb_node rb;
		struct list_head list;
		} u;
		};

		/**
		* struct ubi_ainf_volume - attaching 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_ainf_peb objects)
		*
		* One object of this type is allocated for each volume when attaching an MTD
		* device.
		*/
		struct ubi_ainf_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_attach_info - MTD device attaching 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.,
		* those belonging to "preserve"-compatible internal volumes)
		* @corr_peb_count: count of PEBs in the @corr list
		* @empty_peb_count: count of PEBs which are presumably empty (contain only
		* 0xFF bytes)
		* @alien_peb_count: count of PEBs in the @alien list
		* @bad_peb_count: count of bad physical eraseblocks
		* @maybe_bad_peb_count: count of bad physical eraseblocks which are not marked
		* as bad yet, but which look like bad
		* @vols_found: number of volumes found
		* @highest_vol_id: highest volume ID
		* @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
		* @aeb_slab_cache: slab cache for &struct ubi_ainf_peb objects
		*
		* This data structure contains the result of attaching an MTD device and may
		* be used by other UBI sub-systems to build final UBI data structures, further
		* error-recovery and so on.
		*/
		struct ubi_attach_info {
		struct rb_root volumes;
		struct list_head corr;
		struct list_head free;
		struct list_head erase;
		struct list_head alien;
		int corr_peb_count;
		int empty_peb_count;
		int alien_peb_count;
		int bad_peb_count;
		int maybe_bad_peb_count;
		int vols_found;
		int highest_vol_id;
		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 kmem_cache *aeb_slab_cache;
		};

		struct ubi_device;
		struct ubi_vid_hdr;

		/*
		* ubi_move_aeb_to_list - move a PEB from the volume tree to a list.
		*
		* @av: volume attaching information
		* @aeb: attaching eraseblock information
		* @list: the list to move to
		*/
		static inline void ubi_move_aeb_to_list(struct ubi_ainf_volume *av,
		struct ubi_ainf_peb *aeb,
		struct list_head *list)
		{
		rb_erase(&aeb->u.rb, &av->root);
		list_add_tail(&aeb->u.list, list);
		}

		int ubi_add_to_av(struct ubi_device ubi, struct ubi_attach_info ai, int pnum,
		int ec, const struct ubi_vid_hdr *vid_hdr, int bitflips);
		struct ubi_ainf_volume ubi_find_av(const struct ubi_attach_info ai,
		int vol_id);
		void ubi_remove_av(struct ubi_attach_info ai, struct ubi_ainf_volume av);
		struct ubi_ainf_peb ubi_early_get_peb(struct ubi_device ubi,
		struct ubi_attach_info *ai);
		int ubi_attach(struct ubi_device *ubi);
		void ubi_destroy_ai(struct ubi_attach_info *ai);

		#endif /* !__UBI_SCAN_H__ */

drivers/mtd/ubi/ubi.h

+147 −1

Original line number	Diff line number	Diff line
		@@ -43,7 +43,6 @@
		#include <asm/pgtable.h>

		#include "ubi-media.h"
		#include "scan.h"

		/* Maximum number of supported UBI devices */
		#define UBI_MAX_DEVICES 32
		@@ -82,6 +81,12 @@
		*/
		#define UBI_PROT_QUEUE_LEN 10

		/*
		* When a field of the attaching information has this value - its real value is
		* unknown.
		*/
		#define UBI_UNKNOWN -1

		/*
		* Error codes returned by the I/O sub-system.
		*
		@@ -474,6 +479,121 @@ struct ubi_device {
		struct ubi_debug_info *dbg;
		};

		/**
		* struct ubi_ainf_peb - attach information about a physical eraseblock.
		* @ec: erase counter (%UBI_UNKNOWN if it is unknown)
		* @pnum: physical eraseblock number
		* @lnum: logical eraseblock number
		* @scrub: if this physical eraseblock needs scrubbing
		* @copy_flag: this LEB is a copy (@copy_flag is set in VID header of this LEB)
		* @sqnum: sequence number
		* @u: unions RB-tree or @list links
		* @u.rb: link in the per-volume RB-tree of &struct ubi_ainf_peb objects
		* @u.list: link in one of the eraseblock lists
		*
		* One object of this type is allocated for each physical eraseblock when
		* attaching an MTD device.
		*/
		struct ubi_ainf_peb {
		int ec;
		int pnum;
		int lnum;
		unsigned int scrub:1;
		unsigned int copy_flag:1;
		unsigned long long sqnum;
		union {
		struct rb_node rb;
		struct list_head list;
		} u;
		};

		/**
		* struct ubi_ainf_volume - attaching 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_ainf_peb objects)
		*
		* One object of this type is allocated for each volume when attaching an MTD
		* device.
		*/
		struct ubi_ainf_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_attach_info - MTD device attaching 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.,
		* those belonging to "preserve"-compatible internal volumes)
		* @corr_peb_count: count of PEBs in the @corr list
		* @empty_peb_count: count of PEBs which are presumably empty (contain only
		* 0xFF bytes)
		* @alien_peb_count: count of PEBs in the @alien list
		* @bad_peb_count: count of bad physical eraseblocks
		* @maybe_bad_peb_count: count of bad physical eraseblocks which are not marked
		* as bad yet, but which look like bad
		* @vols_found: number of volumes found
		* @highest_vol_id: highest volume ID
		* @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
		* @aeb_slab_cache: slab cache for &struct ubi_ainf_peb objects
		*
		* This data structure contains the result of attaching an MTD device and may
		* be used by other UBI sub-systems to build final UBI data structures, further
		* error-recovery and so on.
		*/
		struct ubi_attach_info {
		struct rb_root volumes;
		struct list_head corr;
		struct list_head free;
		struct list_head erase;
		struct list_head alien;
		int corr_peb_count;
		int empty_peb_count;
		int alien_peb_count;
		int bad_peb_count;
		int maybe_bad_peb_count;
		int vols_found;
		int highest_vol_id;
		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 kmem_cache *aeb_slab_cache;
		};

		#include "debug.h"

		extern struct kmem_cache *ubi_wl_entry_slab;
		@@ -484,6 +604,17 @@ extern struct class *ubi_class;
		extern struct mutex ubi_devices_mutex;
		extern struct blocking_notifier_head ubi_notifiers;

		/* scan.c */
		int ubi_add_to_av(struct ubi_device ubi, struct ubi_attach_info ai, int pnum,
		int ec, const struct ubi_vid_hdr *vid_hdr, int bitflips);
		struct ubi_ainf_volume ubi_find_av(const struct ubi_attach_info ai,
		int vol_id);
		void ubi_remove_av(struct ubi_attach_info ai, struct ubi_ainf_volume av);
		struct ubi_ainf_peb ubi_early_get_peb(struct ubi_device ubi,
		struct ubi_attach_info *ai);
		int ubi_attach(struct ubi_device *ubi);
		void ubi_destroy_ai(struct ubi_attach_info *ai);

		/* vtbl.c */
		int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
		struct ubi_vtbl_record *vtbl_rec);
		@@ -590,6 +721,21 @@ void ubi_do_get_volume_info(struct ubi_device ubi, struct ubi_volume vol,
		rb = rb_next(rb), \
		pos = (rb ? container_of(rb, typeof(*pos), member) : NULL))

		/*
		* ubi_move_aeb_to_list - move a PEB from the volume tree to a list.
		*
		* @av: volume attaching information
		* @aeb: attaching eraseblock information
		* @list: the list to move to
		*/
		static inline void ubi_move_aeb_to_list(struct ubi_ainf_volume *av,
		struct ubi_ainf_peb *aeb,
		struct list_head *list)
		{
		rb_erase(&aeb->u.rb, &av->root);
		list_add_tail(&aeb->u.list, list);
		}

		/**
		* ubi_zalloc_vid_hdr - allocate a volume identifier header object.
		* @ubi: UBI device description object