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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
David Woodhousea1452a32010-08-08 20:58:20 +01002 * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 */
19
20#ifndef __MTD_NFTL_H__
21#define __MTD_NFTL_H__
22
23#include <linux/mtd/mtd.h>
24#include <linux/mtd/blktrans.h>
25
26#include <mtd/nftl-user.h>
27
28/* these info are used in ReplUnitTable */
29#define BLOCK_NIL 0xffff /* last block of a chain */
30#define BLOCK_FREE 0xfffe /* free block */
31#define BLOCK_NOTEXPLORED 0xfffd /* non explored block, only used during mounting */
32#define BLOCK_RESERVED 0xfffc /* bios block or bad block */
33
34struct NFTLrecord {
35 struct mtd_blktrans_dev mbd;
36 __u16 MediaUnit, SpareMediaUnit;
37 __u32 EraseSize;
38 struct NFTLMediaHeader MediaHdr;
39 int usecount;
40 unsigned char heads;
41 unsigned char sectors;
42 unsigned short cylinders;
43 __u16 numvunits;
44 __u16 lastEUN; /* should be suppressed */
45 __u16 numfreeEUNs;
46 __u16 LastFreeEUN; /* To speed up finding a free EUN */
47 int head,sect,cyl;
48 __u16 *EUNtable; /* [numvunits]: First EUN for each virtual unit */
49 __u16 *ReplUnitTable; /* [numEUNs]: ReplUnitNumber for each */
50 unsigned int nb_blocks; /* number of physical blocks */
51 unsigned int nb_boot_blocks; /* number of blocks used by the bios */
52 struct erase_info instr;
Thomas Gleixner5bd34c02006-05-27 22:16:10 +020053 struct nand_ecclayout oobinfo;
Linus Torvalds1da177e2005-04-16 15:20:36 -070054};
55
56int NFTL_mount(struct NFTLrecord *s);
57int NFTL_formatblock(struct NFTLrecord *s, int block);
58
Adrian Bunk51ee83d2008-04-14 17:20:00 +030059int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
60 size_t *retlen, uint8_t *buf);
61int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
62 size_t *retlen, uint8_t *buf);
63
Linus Torvalds1da177e2005-04-16 15:20:36 -070064#ifndef NFTL_MAJOR
65#define NFTL_MAJOR 93
66#endif
67
68#define MAX_NFTLS 16
69#define MAX_SECTORS_PER_UNIT 64
70#define NFTL_PARTN_BITS 4
71
72#endif /* __MTD_NFTL_H__ */