diff options
Diffstat (limited to 'qemu/roms/u-boot/include/linux/mtd/mtd.h')
| -rw-r--r-- | qemu/roms/u-boot/include/linux/mtd/mtd.h | 388 |
1 files changed, 0 insertions, 388 deletions
diff --git a/qemu/roms/u-boot/include/linux/mtd/mtd.h b/qemu/roms/u-boot/include/linux/mtd/mtd.h deleted file mode 100644 index a65b68155..000000000 --- a/qemu/roms/u-boot/include/linux/mtd/mtd.h +++ /dev/null @@ -1,388 +0,0 @@ -/* - * Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al. - * - * Released under GPL - */ - -#ifndef __MTD_MTD_H__ -#define __MTD_MTD_H__ - -#include <linux/types.h> -#include <div64.h> -#include <mtd/mtd-abi.h> -#include <asm/errno.h> - -#define MTD_CHAR_MAJOR 90 -#define MTD_BLOCK_MAJOR 31 -#define MAX_MTD_DEVICES 32 - -#define MTD_ERASE_PENDING 0x01 -#define MTD_ERASING 0x02 -#define MTD_ERASE_SUSPEND 0x04 -#define MTD_ERASE_DONE 0x08 -#define MTD_ERASE_FAILED 0x10 - -#define MTD_FAIL_ADDR_UNKNOWN -1LL - -/* - * Enumeration for NAND/OneNAND flash chip state - */ -enum { - FL_READY, - FL_READING, - FL_WRITING, - FL_ERASING, - FL_SYNCING, - FL_CACHEDPRG, - FL_RESETING, - FL_UNLOCKING, - FL_LOCKING, - FL_PM_SUSPENDED, -}; - -/* If the erase fails, fail_addr might indicate exactly which block failed. If - fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level or was not - specific to any particular block. */ -struct erase_info { - struct mtd_info *mtd; - uint64_t addr; - uint64_t len; - uint64_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; - int scrub; -}; - -struct mtd_erase_region_info { - uint64_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 */ - unsigned long *lockmap; /* If keeping bitmap of locks */ -}; - -/** - * struct mtd_oob_ops - oob operation operands - * @mode: operation mode - * - * @len: number of data bytes to write/read - * - * @retlen: number of data bytes written/read - * - * @ooblen: number of oob bytes to write/read - * @oobretlen: number of oob bytes written/read - * @ooboffs: offset of oob data in the oob area (only relevant when - * mode = MTD_OPS_PLACE_OOB or MTD_OPS_RAW) - * @datbuf: data buffer - if NULL only oob data are read/written - * @oobbuf: oob data buffer - * - * Note, it is allowed to read more then one OOB area at one go, but not write. - * The interface assumes that the OOB write requests program only one page's - * OOB area. - */ -struct mtd_oob_ops { - unsigned int mode; - size_t len; - size_t retlen; - size_t ooblen; - size_t oobretlen; - uint32_t ooboffs; - uint8_t *datbuf; - uint8_t *oobbuf; -}; - -#ifdef CONFIG_SYS_NAND_MAX_OOBFREE -#define MTD_MAX_OOBFREE_ENTRIES_LARGE CONFIG_SYS_NAND_MAX_OOBFREE -#else -#define MTD_MAX_OOBFREE_ENTRIES_LARGE 32 -#endif - -#ifdef CONFIG_SYS_NAND_MAX_ECCPOS -#define MTD_MAX_ECCPOS_ENTRIES_LARGE CONFIG_SYS_NAND_MAX_ECCPOS -#else -#define MTD_MAX_ECCPOS_ENTRIES_LARGE 640 -#endif - -/* - * 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[MTD_MAX_ECCPOS_ENTRIES_LARGE]; - uint32_t oobavail; - struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE]; -}; - -struct mtd_info { - u_char type; - u_int32_t flags; - uint64_t size; /* Total size of the MTD */ - - /* "Major" erase size for the device. Naïve 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; - /* Minimal writable flash unit size. In case of NOR flash it is 1 (even - * though individual bits can be cleared), in case of NAND flash it is - * one NAND page (or half, or one-fourths of it), in case of ECC-ed NOR - * it is of ECC block size, etc. It is illegal to have writesize = 0. - * Any driver registering a struct mtd_info must ensure a writesize of - * 1 or larger. - */ - u_int32_t writesize; - - u_int32_t oobsize; /* Amount of OOB data per block (e.g. 16) */ - u_int32_t oobavail; /* Available OOB bytes per block */ - - /* - * read ops return -EUCLEAN if max number of bitflips corrected on any - * one region comprising an ecc step equals or exceeds this value. - * Settable by driver, else defaults to ecc_strength. User can override - * in sysfs. N.B. The meaning of the -EUCLEAN return code has changed; - * see Documentation/ABI/testing/sysfs-class-mtd for more detail. - */ - unsigned int bitflip_threshold; - - /* Kernel-only stuff starts here. */ - const char *name; - int index; - - /* ECC layout structure pointer - read only! */ - struct nand_ecclayout *ecclayout; - - /* max number of correctible bit errors per ecc step */ - unsigned int ecc_strength; - - /* 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; - - /* - * Do not call via these pointers, use corresponding mtd_*() - * wrappers instead. - */ - int (*_erase) (struct mtd_info *mtd, struct erase_info *instr); - int (*_point) (struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, void **virt, phys_addr_t *phys); - void (*_unpoint) (struct mtd_info *mtd, 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); - - /* In blackbox flight recorder like scenarios we want to make successful - writes in interrupt context. panic_write() is only intended to be - called when its known the kernel is about to panic and we need the - write to succeed. Since the kernel is not going to be running for much - longer, this function can break locks and delay to ensure the write - succeeds (but not sleep). */ - - int (*_panic_write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf); - - int (*_read_oob) (struct mtd_info *mtd, loff_t from, - struct mtd_oob_ops *ops); - int (*_write_oob) (struct mtd_info *mtd, loff_t to, - struct mtd_oob_ops *ops); - 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 to, size_t len, - size_t *retlen, u_char *buf); - int (*_lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, - size_t len); - void (*_sync) (struct mtd_info *mtd); - int (*_lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len); - int (*_unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len); - int (*_block_isbad) (struct mtd_info *mtd, loff_t ofs); - int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs); - /* - * If the driver is something smart, like UBI, it may need to maintain - * its own reference counting. The below functions are only for driver. - */ - int (*_get_device) (struct mtd_info *mtd); - void (*_put_device) (struct mtd_info *mtd); - -/* XXX U-BOOT XXX */ -#if 0 - /* kvec-based read/write methods. - NB: The 'count' parameter is the number of _vectors_, each of - which contains an (ofs, len) tuple. - */ - int (*writev) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen); -#endif -/* XXX U-BOOT XXX */ -#if 0 - struct notifier_block reboot_notifier; /* default mode before reboot */ -#endif - - /* ECC status information */ - struct mtd_ecc_stats ecc_stats; - /* Subpage shift (NAND) */ - int subpage_sft; - - void *priv; - - struct module *owner; - int usecount; -}; - -int mtd_erase(struct mtd_info *mtd, struct erase_info *instr); -int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, - u_char *buf); -int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, - const u_char *buf); -int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, - const u_char *buf); - -int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops); - -static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to, - struct mtd_oob_ops *ops) -{ - ops->retlen = ops->oobretlen = 0; - if (!mtd->_write_oob) - return -EOPNOTSUPP; - if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - return mtd->_write_oob(mtd, to, ops); -} - -int mtd_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf, - size_t len); -int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf); -int mtd_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf, - size_t len); -int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf); -int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, u_char *buf); -int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len); - -/* XXX U-BOOT XXX */ -#if 0 -int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen); -#endif - -static inline void mtd_sync(struct mtd_info *mtd) -{ - if (mtd->_sync) - mtd->_sync(mtd); -} - -int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len); -int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); -int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len); -int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs); -int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs); - -static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd) -{ - do_div(sz, mtd->erasesize); - return sz; -} - -static inline uint32_t mtd_mod_by_eb(uint64_t sz, struct mtd_info *mtd) -{ - return do_div(sz, mtd->erasesize); -} - -static inline int mtd_has_oob(const struct mtd_info *mtd) -{ - return mtd->_read_oob && mtd->_write_oob; -} - -static inline int mtd_can_have_bb(const struct mtd_info *mtd) -{ - return !!mtd->_block_isbad; -} - - /* 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 struct mtd_info *get_mtd_device_nm(const char *name); - -extern void put_mtd_device(struct mtd_info *mtd); -extern void mtd_get_len_incl_bad(struct mtd_info *mtd, uint64_t offset, - const uint64_t length, uint64_t *len_incl_bad, - int *truncated); -/* XXX U-BOOT XXX */ -#if 0 -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); -#endif - -#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 pr_debug(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args) -#define MTDDEBUG(n, args...) \ - do { \ - if (n <= CONFIG_MTD_DEBUG_VERBOSE) \ - printk(KERN_INFO args); \ - } while(0) -#else /* CONFIG_MTD_DEBUG */ -#define pr_debug(args...) -#define MTDDEBUG(n, args...) \ - do { \ - if (0) \ - printk(KERN_INFO args); \ - } while(0) -#endif /* CONFIG_MTD_DEBUG */ -#define pr_info(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args) -#define pr_warn(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args) -#define pr_err(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args) - -static inline int mtd_is_bitflip(int err) { - return err == -EUCLEAN; -} - -static inline int mtd_is_eccerr(int err) { - return err == -EBADMSG; -} - -static inline int mtd_is_bitflip_or_eccerr(int err) { - return mtd_is_bitflip(err) || mtd_is_eccerr(err); -} - -#endif /* __MTD_MTD_H__ */ |