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
28struct 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
50int INFTL_mount(struct INFTLrecord *s);
51int INFTL_formatblock(struct INFTLrecord *s, int block);
52
53void INFTL_dumptables(struct INFTLrecord *s);
54void INFTL_dumpVUchains(struct INFTLrecord *s);
55
56int inftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
57		   size_t *retlen, uint8_t *buf);
58int 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