[mirror_ubuntu-bionic-kernel.git] / include / linux / mtd / nftl.h

/*
 * (C) 1999-2003 David Woodhouse <dwmw2@infradead.org>
 */

#ifndef __MTD_NFTL_H__
#define __MTD_NFTL_H__

#include <linux/mtd/mtd.h>
#include <linux/mtd/blktrans.h>

#include <mtd/nftl-user.h>

/* these info are used in ReplUnitTable */
#define BLOCK_NIL          0xffff /* last block of a chain */
#define BLOCK_FREE         0xfffe /* free block */
#define BLOCK_NOTEXPLORED  0xfffd /* non explored block, only used during mounting */
#define BLOCK_RESERVED     0xfffc /* bios block or bad block */

struct NFTLrecord {
	struct mtd_blktrans_dev mbd;
	__u16 MediaUnit, SpareMediaUnit;
	__u32 EraseSize;
	struct NFTLMediaHeader MediaHdr;
	int usecount;
	unsigned char heads;
	unsigned char sectors;
	unsigned short cylinders;
	__u16 numvunits;
	__u16 lastEUN;                  /* should be suppressed */
	__u16 numfreeEUNs;
	__u16 LastFreeEUN; 		/* To speed up finding a free EUN */
	int head,sect,cyl;
	__u16 *EUNtable; 		/* [numvunits]: First EUN for each virtual unit  */
	__u16 *ReplUnitTable; 		/* [numEUNs]: ReplUnitNumber for each */
        unsigned int nb_blocks;		/* number of physical blocks */
        unsigned int nb_boot_blocks;	/* number of blocks used by the bios */
        struct erase_info instr;
	struct nand_ecclayout oobinfo;
};

int NFTL_mount(struct NFTLrecord *s);
int NFTL_formatblock(struct NFTLrecord *s, int block);

int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
		  size_t *retlen, uint8_t *buf);
int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
		   size_t *retlen, uint8_t *buf);

#ifndef NFTL_MAJOR
#define NFTL_MAJOR 93
#endif

#define MAX_NFTLS 16
#define MAX_SECTORS_PER_UNIT 64
#define NFTL_PARTN_BITS 4

#endif /* __MTD_NFTL_H__ */
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* (C) 1999-2003 David Woodhouse <dwmw2@infradead.org>
	3	*/
	4
	5	#ifndef __MTD_NFTL_H__
	6	#define __MTD_NFTL_H__
	7
	8	#include <linux/mtd/mtd.h>
	9	#include <linux/mtd/blktrans.h>
	10
	11	#include <mtd/nftl-user.h>
	12
	13	/* these info are used in ReplUnitTable */
	14	#define BLOCK_NIL 0xffff /* last block of a chain */
	15	#define BLOCK_FREE 0xfffe /* free block */
	16	#define BLOCK_NOTEXPLORED 0xfffd /* non explored block, only used during mounting */
	17	#define BLOCK_RESERVED 0xfffc /* bios block or bad block */
	18
	19	struct NFTLrecord {
	20	struct mtd_blktrans_dev mbd;
	21	__u16 MediaUnit, SpareMediaUnit;
	22	__u32 EraseSize;
	23	struct NFTLMediaHeader MediaHdr;
	24	int usecount;
	25	unsigned char heads;
	26	unsigned char sectors;
	27	unsigned short cylinders;
	28	__u16 numvunits;
	29	__u16 lastEUN; /* should be suppressed */
	30	__u16 numfreeEUNs;
	31	__u16 LastFreeEUN; /* To speed up finding a free EUN */
	32	int head,sect,cyl;
	33	__u16 EUNtable; / [numvunits]: First EUN for each virtual unit */
	34	__u16 ReplUnitTable; / [numEUNs]: ReplUnitNumber for each */
	35	unsigned int nb_blocks; /* number of physical blocks */
	36	unsigned int nb_boot_blocks; /* number of blocks used by the bios */
	37	struct erase_info instr;
5bd34c09	38	struct nand_ecclayout oobinfo;
1da177e4 LT	39	};
	40
	41	int NFTL_mount(struct NFTLrecord *s);
	42	int NFTL_formatblock(struct NFTLrecord *s, int block);
	43
51ee83df AB	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
1da177e4 LT	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__ */