/* * $Id: mtd-abi.h,v 1.13 2005/11/07 11:14:56 gleixner Exp $ * * Portions of MTD ABI definition which are shared by kernel and user space */#ifndef __MTD_ABI_H__#define __MTD_ABI_H__#if 1#include <linux/mtd/compat.h>#endifstruct erase_info_user {	uint32_t start;	uint32_t length;};struct mtd_oob_buf {	uint32_t start;	uint32_t length;	unsigned char __user *ptr;};#define MTD_ABSENT		0#define MTD_RAM			1#define MTD_ROM			2#define MTD_NORFLASH		3#define MTD_NANDFLASH		4#define MTD_DATAFLASH		6#define MTD_UBIVOLUME		7#define MTD_WRITEABLE		0x400	/* Device is writeable */#define MTD_BIT_WRITEABLE	0x800	/* Single bits can be flipped */#define MTD_NO_ERASE		0x1000	/* No erase necessary */#define MTD_STUPID_LOCK		0x2000	/* Always locked after reset *//* Some common devices / combinations of capabilities */#define MTD_CAP_ROM		0#define MTD_CAP_RAM		(MTD_WRITEABLE | MTD_BIT_WRITEABLE | MTD_NO_ERASE)#define MTD_CAP_NORFLASH	(MTD_WRITEABLE | MTD_BIT_WRITEABLE)#define MTD_CAP_NANDFLASH	(MTD_WRITEABLE)/* ECC byte placement */#define MTD_NANDECC_OFF		0	/* Switch off ECC (Not recommended) */#define MTD_NANDECC_PLACE	1	/* Use the given placement in the structure (YAFFS1 legacy mode) */#define MTD_NANDECC_AUTOPLACE	2	/* Use the default placement scheme */#define MTD_NANDECC_PLACEONLY	3	/* Use the given placement in the structure (Do not store ecc result on read) */#define MTD_NANDECC_AUTOPL_USR	4	/* Use the given autoplacement scheme rather than using the default *//* OTP mode selection */#define MTD_OTP_OFF		0#define MTD_OTP_FACTORY		1#define MTD_OTP_USER		2struct mtd_info_user {	uint8_t type;	uint32_t flags;	uint32_t size;			/* Total size of the MTD */	uint32_t erasesize;	uint32_t writesize;	uint32_t oobsize;		/* Amount of OOB data per block (e.g. 16) */	/* The below two fields are obsolete and broken, do not use them	 * (TODO: remove at some point) */	uint32_t ecctype;	uint32_t eccsize;};struct region_info_user {	uint32_t offset;		/* At which this region starts,					 * from the beginning of the MTD */	uint32_t erasesize;		/* For this region */	uint32_t numblocks;		/* Number of blocks in this region */	uint32_t regionindex;};struct otp_info {	uint32_t start;	uint32_t length;	uint32_t locked;};#define MEMGETINFO		_IOR('M', 1, struct mtd_info_user)#define MEMERASE		_IOW('M', 2, struct erase_info_user)#define MEMWRITEOOB		_IOWR('M', 3, struct mtd_oob_buf)#define MEMREADOOB		_IOWR('M', 4, struct mtd_oob_buf)#define MEMLOCK			_IOW('M', 5, struct erase_info_user)#define MEMUNLOCK		_IOW('M', 6, struct erase_info_user)#define MEMGETREGIONCOUNT	_IOR('M', 7, int)#define MEMGETREGIONINFO	_IOWR('M', 8, struct region_info_user)#define MEMSETOOBSEL		_IOW('M', 9, struct nand_oobinfo)#define MEMGETOOBSEL		_IOR('M', 10, struct nand_oobinfo)#define MEMGETBADBLOCK		_IOW('M', 11, loff_t)#define MEMSETBADBLOCK		_IOW('M', 12, loff_t)#define OTPSELECT		_IOR('M', 13, int)#define OTPGETREGIONCOUNT	_IOW('M', 14, int)#define OTPGETREGIONINFO	_IOW('M', 15, struct otp_info)#define OTPLOCK			_IOR('M', 16, struct otp_info)#define ECCGETLAYOUT		_IOR('M', 17, struct nand_ecclayout)#define ECCGETSTATS		_IOR('M', 18, struct mtd_ecc_stats)#define MTDFILEMODE		_IO('M', 19)/* * Obsolete legacy interface. Keep it in order not to break userspace * interfaces */struct nand_oobinfo {	uint32_t useecc;	uint32_t eccbytes;	uint32_t oobfree[8][2];	uint32_t eccpos[48];};struct nand_oobfree {	uint32_t offset;	uint32_t length;};#define MTD_MAX_OOBFREE_ENTRIES	8/* * ECC layout control structure. Exported to userspace for * diagnosis and to allow creation of raw images */struct nand_ecclayout {	uint32_t eccbytes;	uint32_t eccpos[64];	uint32_t oobavail;	struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES];};/** * struct mtd_ecc_stats - error correction stats * * @corrected:	number of corrected bits * @failed:	number of uncorrectable errors * @badblocks:	number of bad blocks in this partition * @bbtblocks:	number of blocks reserved for bad block tables */struct mtd_ecc_stats {	uint32_t corrected;	uint32_t failed;	uint32_t badblocks;	uint32_t bbtblocks;};/* * Read/write file modes for access to MTD */enum mtd_file_modes {	MTD_MODE_NORMAL = MTD_OTP_OFF,	MTD_MODE_OTP_FACTORY = MTD_OTP_FACTORY,	MTD_MODE_OTP_USER = MTD_OTP_USER,	MTD_MODE_RAW,};#endif /* __MTD_ABI_H__ */