nftl.h (1734B)
1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org> 4 */ 5 6#ifndef __MTD_NFTL_H__ 7#define __MTD_NFTL_H__ 8 9#include <linux/mtd/mtd.h> 10#include <linux/mtd/blktrans.h> 11 12#include <mtd/nftl-user.h> 13 14/* these info are used in ReplUnitTable */ 15#define BLOCK_NIL 0xffff /* last block of a chain */ 16#define BLOCK_FREE 0xfffe /* free block */ 17#define BLOCK_NOTEXPLORED 0xfffd /* non explored block, only used during mounting */ 18#define BLOCK_RESERVED 0xfffc /* bios block or bad block */ 19 20struct NFTLrecord { 21 struct mtd_blktrans_dev mbd; 22 __u16 MediaUnit, SpareMediaUnit; 23 __u32 EraseSize; 24 struct NFTLMediaHeader MediaHdr; 25 int usecount; 26 unsigned char heads; 27 unsigned char sectors; 28 unsigned short cylinders; 29 __u16 numvunits; 30 __u16 lastEUN; /* should be suppressed */ 31 __u16 numfreeEUNs; 32 __u16 LastFreeEUN; /* To speed up finding a free EUN */ 33 int head,sect,cyl; 34 __u16 *EUNtable; /* [numvunits]: First EUN for each virtual unit */ 35 __u16 *ReplUnitTable; /* [numEUNs]: ReplUnitNumber for each */ 36 unsigned int nb_blocks; /* number of physical blocks */ 37 unsigned int nb_boot_blocks; /* number of blocks used by the bios */ 38 struct erase_info instr; 39}; 40 41int NFTL_mount(struct NFTLrecord *s); 42int NFTL_formatblock(struct NFTLrecord *s, int block); 43 44int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len, 45 size_t *retlen, uint8_t *buf); 46int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len, 47 size_t *retlen, uint8_t *buf); 48 49#ifndef NFTL_MAJOR 50#define NFTL_MAJOR 93 51#endif 52 53#define MAX_NFTLS 16 54#define MAX_SECTORS_PER_UNIT 64 55#define NFTL_PARTN_BITS 4 56 57#endif /* __MTD_NFTL_H__ */