home *** CD-ROM | disk | FTP | other *** search
- /*
- * Portions of MTD ABI definition which are shared by kernel and user space
- */
-
- #ifndef __MTD_ABI_H__
- #define __MTD_ABI_H__
-
- #include <linux/types.h>
-
- struct erase_info_user {
- __u32 start;
- __u32 length;
- };
-
- struct erase_info_user64 {
- __u64 start;
- __u64 length;
- };
-
- struct mtd_oob_buf {
- __u32 start;
- __u32 length;
- unsigned char *ptr;
- };
-
- struct mtd_oob_buf64 {
- __u64 start;
- __u32 pad;
- __u32 length;
- __u64 usr_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_POWERUP_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 2
-
- struct mtd_info_user {
- __u8 type;
- __u32 flags;
- __u32 size; // Total size of the MTD
- __u32 erasesize;
- __u32 writesize;
- __u32 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) */
- __u32 ecctype;
- __u32 eccsize;
- };
-
- struct region_info_user {
- __u32 offset; /* At which this region starts,
- * from the beginning of the MTD */
- __u32 erasesize; /* For this region */
- __u32 numblocks; /* Number of blocks in this region */
- __u32 regionindex;
- };
-
- struct otp_info {
- __u32 start;
- __u32 length;
- __u32 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, __kernel_loff_t)
- #define MEMSETBADBLOCK _IOW('M', 12, __kernel_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)
- #define MEMERASE64 _IOW('M', 20, struct erase_info_user64)
- #define MEMWRITEOOB64 _IOWR('M', 21, struct mtd_oob_buf64)
- #define MEMREADOOB64 _IOWR('M', 22, struct mtd_oob_buf64)
-
- /*
- * Obsolete legacy interface. Keep it in order not to break userspace
- * interfaces
- */
- struct nand_oobinfo {
- __u32 useecc;
- __u32 eccbytes;
- __u32 oobfree[8][2];
- __u32 eccpos[32];
- };
-
- struct nand_oobfree {
- __u32 offset;
- __u32 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 {
- __u32 eccbytes;
- __u32 eccpos[64];
- __u32 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 {
- __u32 corrected;
- __u32 failed;
- __u32 badblocks;
- __u32 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__ */
-