[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / mtd / mtd-abi.h

/*
 * $Id: mtd-abi.h,v 1.9 2005/02/08 17:45:52 nico Exp $
 *
 * Portions of MTD ABI definition which are shared by kernel and user space 
 */

#ifndef __MTD_ABI_H__
#define __MTD_ABI_H__

#ifndef __KERNEL__ /* Urgh. The whole point of splitting this out into
		    separate files was to avoid #ifdef __KERNEL__ */
#define __user
#endif

struct 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_PEROM		5
#define MTD_OTHER		14
#define MTD_UNKNOWN		15

#define MTD_CLEAR_BITS		1       // Bits can be cleared (flash)
#define MTD_SET_BITS		2       // Bits can be set
#define MTD_ERASEABLE		4       // Has an erase function
#define MTD_WRITEB_WRITEABLE	8       // Direct IO is possible
#define MTD_VOLATILE		16      // Set for RAMs
#define MTD_XIP			32	// eXecute-In-Place possible
#define MTD_OOB			64	// Out-of-band data (NAND flash)
#define MTD_ECC			128	// Device capable of automatic ECC
#define MTD_NO_VIRTBLOCKS	256	// Virtual blocks not allowed

// Some common devices / combinations of capabilities
#define MTD_CAP_ROM		0
#define MTD_CAP_RAM		(MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE)
#define MTD_CAP_NORFLASH        (MTD_CLEAR_BITS|MTD_ERASEABLE)
#define MTD_CAP_NANDFLASH       (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB)
#define MTD_WRITEABLE		(MTD_CLEAR_BITS|MTD_SET_BITS)


// Types of automatic ECC/Checksum available
#define MTD_ECC_NONE		0 	// No automatic ECC available
#define MTD_ECC_RS_DiskOnChip	1	// Automatic ECC on DiskOnChip
#define MTD_ECC_SW		2	// SW ECC for Toshiba & Samsung devices

/* 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)

/* OTP mode selection */
#define MTD_OTP_OFF		0
#define MTD_OTP_FACTORY		1
#define MTD_OTP_USER		2

struct mtd_info_user {
	uint8_t type;
	uint32_t flags;
	uint32_t size;	 // Total size of the MTD
	uint32_t erasesize;
	uint32_t oobblock;  // Size of OOB blocks (e.g. 512)
	uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
	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)

struct nand_oobinfo {
	uint32_t useecc;
	uint32_t eccbytes;
	uint32_t oobfree[8][2];
	uint32_t eccpos[32];
};

#endif /* __MTD_ABI_H__ */
Commit	Line	Data
1da177e4	1	/*
31f4233b	2	* $Id: mtd-abi.h,v 1.9 2005/02/08 17:45:52 nico Exp $
1da177e4 LT	3	*
	4	* Portions of MTD ABI definition which are shared by kernel and user space
	5	*/
	6
	7	#ifndef __MTD_ABI_H__
	8	#define __MTD_ABI_H__
	9
	10	#ifndef __KERNEL__ /* Urgh. The whole point of splitting this out into
	11	separate files was to avoid #ifdef __KERNEL__ */
	12	#define __user
	13	#endif
	14
	15	struct erase_info_user {
	16	uint32_t start;
	17	uint32_t length;
	18	};
	19
	20	struct mtd_oob_buf {
	21	uint32_t start;
	22	uint32_t length;
	23	unsigned char __user *ptr;
	24	};
	25
	26	#define MTD_ABSENT 0
	27	#define MTD_RAM 1
	28	#define MTD_ROM 2
	29	#define MTD_NORFLASH 3
	30	#define MTD_NANDFLASH 4
	31	#define MTD_PEROM 5
	32	#define MTD_OTHER 14
	33	#define MTD_UNKNOWN 15
	34
	35	#define MTD_CLEAR_BITS 1 // Bits can be cleared (flash)
	36	#define MTD_SET_BITS 2 // Bits can be set
	37	#define MTD_ERASEABLE 4 // Has an erase function
	38	#define MTD_WRITEB_WRITEABLE 8 // Direct IO is possible
	39	#define MTD_VOLATILE 16 // Set for RAMs
	40	#define MTD_XIP 32 // eXecute-In-Place possible
	41	#define MTD_OOB 64 // Out-of-band data (NAND flash)
	42	#define MTD_ECC 128 // Device capable of automatic ECC
	43	#define MTD_NO_VIRTBLOCKS 256 // Virtual blocks not allowed
	44
	45	// Some common devices / combinations of capabilities
	46	#define MTD_CAP_ROM 0
	47	#define MTD_CAP_RAM (MTD_CLEAR_BITS\|MTD_SET_BITS\|MTD_WRITEB_WRITEABLE)
	48	#define MTD_CAP_NORFLASH (MTD_CLEAR_BITS\|MTD_ERASEABLE)
	49	#define MTD_CAP_NANDFLASH (MTD_CLEAR_BITS\|MTD_ERASEABLE\|MTD_OOB)
	50	#define MTD_WRITEABLE (MTD_CLEAR_BITS\|MTD_SET_BITS)
	51
	52
	53	// Types of automatic ECC/Checksum available
	54	#define MTD_ECC_NONE 0 // No automatic ECC available
	55	#define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip
	56	#define MTD_ECC_SW 2 // SW ECC for Toshiba & Samsung devices
	57
	58	/* ECC byte placement */
	59	#define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended)
	60	#define MTD_NANDECC_PLACE 1 // Use the given placement in the structure (YAFFS1 legacy mode)
	61	#define MTD_NANDECC_AUTOPLACE 2 // Use the default placement scheme
	62	#define MTD_NANDECC_PLACEONLY 3 // Use the given placement in the structure (Do not store ecc result on read)
	63
31f4233b NP	64	/* OTP mode selection */
	65	#define MTD_OTP_OFF 0
	66	#define MTD_OTP_FACTORY 1
	67	#define MTD_OTP_USER 2
	68
1da177e4 LT	69	struct mtd_info_user {
	70	uint8_t type;
	71	uint32_t flags;
	72	uint32_t size; // Total size of the MTD
	73	uint32_t erasesize;
	74	uint32_t oobblock; // Size of OOB blocks (e.g. 512)
	75	uint32_t oobsize; // Amount of OOB data per block (e.g. 16)
	76	uint32_t ecctype;
	77	uint32_t eccsize;
	78	};
	79
	80	struct region_info_user {
	81	uint32_t offset; /* At which this region starts,
	82	* from the beginning of the MTD */
	83	uint32_t erasesize; /* For this region */
	84	uint32_t numblocks; /* Number of blocks in this region */
	85	uint32_t regionindex;
	86	};
	87
f77814dd NP	88	struct otp_info {
	89	uint32_t start;
	90	uint32_t length;
	91	uint32_t locked;
	92	};
	93
1da177e4 LT	94	#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
	95	#define MEMERASE _IOW('M', 2, struct erase_info_user)
	96	#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
	97	#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
	98	#define MEMLOCK _IOW('M', 5, struct erase_info_user)
	99	#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
	100	#define MEMGETREGIONCOUNT _IOR('M', 7, int)
	101	#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user)
	102	#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo)
	103	#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo)
	104	#define MEMGETBADBLOCK _IOW('M', 11, loff_t)
	105	#define MEMSETBADBLOCK _IOW('M', 12, loff_t)
31f4233b NP	106	#define OTPSELECT _IOR('M', 13, int)
	107	#define OTPGETREGIONCOUNT _IOW('M', 14, int)
	108	#define OTPGETREGIONINFO _IOW('M', 15, struct otp_info)
	109	#define OTPLOCK _IOR('M', 16, struct otp_info)
1da177e4 LT	110
	111	struct nand_oobinfo {
	112	uint32_t useecc;
	113	uint32_t eccbytes;
	114	uint32_t oobfree[8][2];
	115	uint32_t eccpos[32];
	116	};
	117
	118	#endif /* __MTD_ABI_H__ */