http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/mtd/mtd.h

/* * $Id: mtd.h,v 1.61 2005/11/07 11:14:54 gleixner Exp $ * * Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al. * * Released under GPL */ #ifndef __MTD_MTD_H__ #define __MTD_MTD_H__ #ifndef __KERNEL__ #error This is a kernel header. Perhaps include mtd-user.h instead? #endif #include <linux/config.h> #include <linux/types.h> #include <linux/module.h> #include <linux/uio.h> #include <linux/notifier.h> #include <linux/mtd/compatmac.h> #include <mtd/mtd-abi.h> #define MTD_CHAR_MAJOR 90 #define MTD_BLOCK_MAJOR 31 #define MAX_MTD_DEVICES 16 #define MTD_ERASE_PENDING 0x01 #define MTD_ERASING 0x02 #define MTD_ERASE_SUSPEND 0x04 #define MTD_ERASE_DONE 0x08 #define MTD_ERASE_FAILED 0x10 /* If the erase fails, fail_addr might indicate exactly which block failed. If fail_addr = 0xffffffff, the failure was not at the device level or was not specific to any particular block. */ struct erase_info { struct mtd_info *mtd; u_int32_t addr; u_int32_t len; u_int32_t fail_addr; u_long time; u_long retries; u_int dev; u_int cell; void (*callback) (struct erase_info *self); u_long priv; u_char state; struct erase_info *next; }; struct mtd_erase_region_info { u_int32_t offset; /* At which this region starts, from the beginning of the MTD */ u_int32_t erasesize; /* For this region */ u_int32_t numblocks; /* Number of blocks of erasesize in this region */ }; struct mtd_info { u_char type; u_int32_t flags; u_int32_t size; // Total size of the MTD /* "Major" erase size for the device. Na´ve users may take this * to be the only erase size available, or may use the more detailed * information below if they desire */ u_int32_t erasesize; u_int32_t oobblock; // Size of OOB blocks (e.g. 512) u_int32_t oobsize; // Amount of OOB data per block (e.g. 16) u_int32_t ecctype; u_int32_t eccsize; /* * Reuse some of the above unused fields in the case of NOR flash * with configurable programming regions to avoid modifying the * user visible structure layout/size. Only valid when the * MTD_PROGRAM_REGIONS flag is set. * (Maybe we should have an union for those?) */ #define MTD_PROGREGION_SIZE(mtd) (mtd)->oobblock #define MTD_PROGREGION_CTRLMODE_VALID(mtd) (mtd)->oobsize #define MTD_PROGREGION_CTRLMODE_INVALID(mtd) (mtd)->ecctype // Kernel-only stuff starts here. char *name; int index; // oobinfo is a nand_oobinfo structure, which can be set by iotcl (MEMSETOOBINFO) struct nand_oobinfo oobinfo; u_int32_t oobavail; // Number of bytes in OOB area available for fs /* Data for variable erase regions. If numeraseregions is zero, * it means that the whole device has erasesize as given above. */ int numeraseregions; struct mtd_erase_region_info *eraseregions; /* This really shouldn't be here. It can go away in 2.5 */ u_int32_t bank_size; int (*erase) (struct mtd_info *mtd, struct erase_info *instr); /* This stuff for eXecute-In-Place */ int (*point) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf); /* We probably shouldn't allow XIP if the unpoint isn't a NULL */ void (*unpoint) (struct mtd_info *mtd, u_char * addr, loff_t from, size_t len); int (*read) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); int (*write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf); int (*read_ecc) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel); int (*write_ecc) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel); int (*read_oob) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); int (*write_oob) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf); /* * Methods to access the protection register area, present in some * flash devices. The user data is one time programmable but the * factory data is read only. */ int (*get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len); int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); int (*get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len); int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len); /* kvec-based read/write methods. We need these especially for NAND flash, with its limited number of write cycles per erase. NB: The 'count' parameter is the number of _vectors_, each of which contains an (ofs, len) tuple. */ int (*readv) (struct mtd_info *mtd, struct kvec *vecs, unsigned long count, loff_t from, size_t *retlen); int (*readv_ecc) (struct mtd_info *mtd, struct kvec *vecs, unsigned long count, loff_t from, size_t *retlen, u_char *eccbuf, struct nand_oobinfo *oobsel); int (*writev) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen); int (*writev_ecc) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen, u_char *eccbuf, struct nand_oobinfo *oobsel); /* Sync */ void (*sync) (struct mtd_info *mtd); /* Chip-supported device locking */ int (*lock) (struct mtd_info *mtd, loff_t ofs, size_t len); int (*unlock) (struct mtd_info *mtd, loff_t ofs, size_t len); /* Power Management functions */ int (*suspend) (struct mtd_info *mtd); void (*resume) (struct mtd_info *mtd); /* Bad block management functions */ int (*block_isbad) (struct mtd_info *mtd, loff_t ofs); int (*block_markbad) (struct mtd_info *mtd, loff_t ofs); struct notifier_block reboot_notifier; /* default mode before reboot */ void *priv; struct module *owner; int usecount; }; /* Kernel-side ioctl definitions */ extern int add_mtd_device(struct mtd_info *mtd); extern int del_mtd_device (struct mtd_info *mtd); extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num); extern void put_mtd_device(struct mtd_info *mtd); struct mtd_notifier { void (*add)(struct mtd_info *mtd); void (*remove)(struct mtd_info *mtd); struct list_head list; }; extern void register_mtd_user (struct mtd_notifier *new); extern int unregister_mtd_user (struct mtd_notifier *old); int default_mtd_writev(struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen); int default_mtd_readv(struct mtd_info *mtd, struct kvec *vecs, unsigned long count, loff_t from, size_t *retlen); #define MTD_ERASE(mtd, args...) (*(mtd->erase))(mtd, args) #define MTD_POINT(mtd, a,b,c,d) (*(mtd->point))(mtd, a,b,c, (u_char **)(d)) #define MTD_UNPOINT(mtd, arg) (*(mtd->unpoint))(mtd, (u_char *)arg) #define MTD_READ(mtd, args...) (*(mtd->read))(mtd, args) #define MTD_WRITE(mtd, args...) (*(mtd->write))(mtd, args) #define MTD_READV(mtd, args...) (*(mtd->readv))(mtd, args) #define MTD_WRITEV(mtd, args...) (*(mtd->writev))(mtd, args) #define MTD_READECC(mtd, args...) (*(mtd->read_ecc))(mtd, args) #define MTD_WRITEECC(mtd, args...) (*(mtd->write_ecc))(mtd, args) #define MTD_READOOB(mtd, args...) (*(mtd->read_oob))(mtd, args) #define MTD_WRITEOOB(mtd, args...) (*(mtd->write_oob))(mtd, args) #define MTD_SYNC(mtd) do { if (mtd->sync) (*(mtd->sync))(mtd); } while (0) #ifdef CONFIG_MTD_PARTITIONS void mtd_erase_callback(struct erase_info *instr); #else static inline void mtd_erase_callback(struct erase_info *instr) { if (instr->callback) instr->callback(instr); } #endif /* * Debugging macro and defines */ #define MTD_DEBUG_LEVEL0 (0) /* Quiet */ #define MTD_DEBUG_LEVEL1 (1) /* Audible */ #define MTD_DEBUG_LEVEL2 (2) /* Loud */ #define MTD_DEBUG_LEVEL3 (3) /* Noisy */ #ifdef CONFIG_MTD_DEBUG #define DEBUG(n, args...) \ do { \ if (n <= CONFIG_MTD_DEBUG_VERBOSE) \ printk(KERN_INFO args); \ } while(0) #else /* CONFIG_MTD_DEBUG */ #define DEBUG(n, args...) do { } while(0) #endif /* CONFIG_MTD_DEBUG */ #endif /* __MTD_MTD_H__ */