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