| /* |
| * $Id: mtd-abi.h,v 1.7 2004/11/23 15:37:32 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/compat.h> |
| #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_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 2 |
| |
| struct 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[128]; |
| 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__ */ |