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