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 | |
20 | struct 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 | |
41 | int NFTL_mount(struct NFTLrecord *s); |
42 | int NFTL_formatblock(struct NFTLrecord *s, int block); |
43 | |
44 | int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len, |
45 | size_t *retlen, uint8_t *buf); |
46 | int 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__ */ |
58 | |