1/*
2 * 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 *
18 */
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;
53	struct nand_ecclayout oobinfo;
54};
55
56int NFTL_mount(struct NFTLrecord *s);
57int NFTL_formatblock(struct NFTLrecord *s, int block);
58
59int 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
64#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__ */
73