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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org>
*/
#ifndef __MTD_NFTL_H__
#define __MTD_NFTL_H__
#include <linux/mtd/mtd.h>
#include <linux/mtd/blktrans.h>
#include <mtd/nftl-user.h>
/* these info are used in ReplUnitTable */
#define BLOCK_NIL 0xffff /* last block of a chain */
#define BLOCK_FREE 0xfffe /* free block */
#define BLOCK_NOTEXPLORED 0xfffd /* non explored block, only used during mounting */
#define BLOCK_RESERVED 0xfffc /* bios block or bad block */
struct NFTLrecord {
struct mtd_blktrans_dev mbd;
__u16 MediaUnit, SpareMediaUnit;
__u32 EraseSize;
struct NFTLMediaHeader MediaHdr;
int usecount;
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
__u16 numvunits;
__u16 lastEUN; /* should be suppressed */
__u16 numfreeEUNs;
__u16 LastFreeEUN; /* To speed up finding a free EUN */
int head,sect,cyl;
__u16 *EUNtable; /* [numvunits]: First EUN for each virtual unit */
__u16 *ReplUnitTable; /* [numEUNs]: ReplUnitNumber for each */
unsigned int nb_blocks; /* number of physical blocks */
unsigned int nb_boot_blocks; /* number of blocks used by the bios */
struct erase_info instr;
};
int NFTL_mount(struct NFTLrecord *s);
int NFTL_formatblock(struct NFTLrecord *s, int block);
int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
size_t *retlen, uint8_t *buf);
int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
size_t *retlen, uint8_t *buf);
#ifndef NFTL_MAJOR
#define NFTL_MAJOR 93
#endif
#define MAX_NFTLS 16
#define MAX_SECTORS_PER_UNIT 64
#define NFTL_PARTN_BITS 4
#endif /* __MTD_NFTL_H__ */