xref: /linux/include/linux/mtd/inftl.h (revision 498495dba268b20e8eadd7fe93c140c68b6cc9d2)
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