1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * inftl.h -- defines to support the Inverse NAND Flash Translation Layer
4 *
5 * (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com)
6 */
7
8 #ifndef __MTD_INFTL_H__
9 #define __MTD_INFTL_H__
10
11 #ifndef __KERNEL__
12 #error This is a kernel header. Perhaps include nftl-user.h instead?
13 #endif
14
15 #include <linux/mtd/blktrans.h>
16 #include <linux/mtd/mtd.h>
17 #include <linux/mtd/nftl.h>
18
19 #include <mtd/inftl-user.h>
20
21 #ifndef INFTL_MAJOR
22 #define INFTL_MAJOR 96
23 #endif
24 #define INFTL_PARTN_BITS 4
25
26 #ifdef __KERNEL__
27
28 struct INFTLrecord {
29 struct mtd_blktrans_dev mbd;
30 __u16 MediaUnit;
31 __u32 EraseSize;
32 struct INFTLMediaHeader MediaHdr;
33 int usecount;
34 unsigned char heads;
35 unsigned char sectors;
36 unsigned short cylinders;
37 __u16 numvunits;
38 __u16 firstEUN;
39 __u16 lastEUN;
40 __u16 numfreeEUNs;
41 __u16 LastFreeEUN; /* To speed up finding a free EUN */
42 int head,sect,cyl;
43 __u16 *PUtable; /* Physical Unit Table */
44 __u16 *VUtable; /* Virtual Unit Table */
45 unsigned int nb_blocks; /* number of physical blocks */
46 unsigned int nb_boot_blocks; /* number of blocks used by the bios */
47 struct erase_info instr;
48 };
49
50 int INFTL_mount(struct INFTLrecord *s);
51 int INFTL_formatblock(struct INFTLrecord *s, int block);
52
53 void INFTL_dumptables(struct INFTLrecord *s);
54 void INFTL_dumpVUchains(struct INFTLrecord *s);
55
56 int inftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
57 size_t *retlen, uint8_t *buf);
58 int inftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
59 size_t *retlen, uint8_t *buf);
60
61 #endif /* __KERNEL__ */
62
63 #endif /* __MTD_INFTL_H__ */
64
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