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Diffstat (limited to 'uclibc-crosstools-gcc-4.4.2-1/usr/include/mtd/mtd-abi.h')
| -rw-r--r-- | uclibc-crosstools-gcc-4.4.2-1/usr/include/mtd/mtd-abi.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/uclibc-crosstools-gcc-4.4.2-1/usr/include/mtd/mtd-abi.h b/uclibc-crosstools-gcc-4.4.2-1/usr/include/mtd/mtd-abi.h new file mode 100644 index 0000000..bda76db --- /dev/null +++ b/uclibc-crosstools-gcc-4.4.2-1/usr/include/mtd/mtd-abi.h @@ -0,0 +1,152 @@ +/* + * 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 mtd_oob_buf { + __u32 start; + __u32 length; + unsigned char *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) + +/* + * 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__ */ |