diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mtd/mtd.h | 129 |
1 files changed, 17 insertions, 112 deletions
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 8c243117c08..317a80c4d54 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -240,83 +240,18 @@ struct mtd_info { int usecount; }; -/* - * Erase is an asynchronous operation. Device drivers are supposed - * to call instr->callback() whenever the operation completes, even - * if it completes with a failure. - * Callers are supposed to pass a callback function and wait for it - * to be called before writing to the block. - */ -static inline int mtd_erase(struct mtd_info *mtd, struct erase_info *instr) -{ - return mtd->_erase(mtd, instr); -} - -/* - * This stuff for eXecute-In-Place. phys is optional and may be set to NULL. - */ -static inline int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, void **virt, resource_size_t *phys) -{ - *retlen = 0; - if (!mtd->_point) - return -EOPNOTSUPP; - return mtd->_point(mtd, from, len, retlen, virt, phys); -} - -/* We probably shouldn't allow XIP if the unpoint isn't a NULL */ -static inline int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len) -{ - if (!mtd->_point) - return -EOPNOTSUPP; - return mtd->_unpoint(mtd, from, len); -} - -/* - * Allow NOMMU mmap() to directly map the device (if not NULL) - * - return the address to which the offset maps - * - return -ENOSYS to indicate refusal to do the mapping - */ -static inline unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, - unsigned long len, - unsigned long offset, - unsigned long flags) -{ - if (!mtd->_get_unmapped_area) - return -EOPNOTSUPP; - return mtd->_get_unmapped_area(mtd, len, offset, flags); -} - -static inline int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) -{ - return mtd->_read(mtd, from, len, retlen, buf); -} - -static inline int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) -{ - *retlen = 0; - if (!mtd->_write) - return -EROFS; - return mtd->_write(mtd, to, len, retlen, 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). - */ -static inline int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) -{ - *retlen = 0; - if (!mtd->_panic_write) - return -EOPNOTSUPP; - return mtd->_panic_write(mtd, to, len, retlen, buf); -} +int mtd_erase(struct mtd_info *mtd, struct erase_info *instr); +int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, + void **virt, resource_size_t *phys); +int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len); +unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len, + unsigned long offset, unsigned long flags); +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); static inline int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) @@ -405,27 +340,11 @@ static inline void mtd_sync(struct mtd_info *mtd) mtd->_sync(mtd); } -/* Chip-supported device locking */ -static inline int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) -{ - if (!mtd->_lock) - return -EOPNOTSUPP; - return mtd->_lock(mtd, ofs, len); -} - -static inline int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) -{ - if (!mtd->_unlock) - return -EOPNOTSUPP; - return mtd->_unlock(mtd, ofs, len); -} - -static inline int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len) -{ - if (!mtd->_is_locked) - return -EOPNOTSUPP; - return mtd->_is_locked(mtd, ofs, len); -} +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 int mtd_suspend(struct mtd_info *mtd) { @@ -438,20 +357,6 @@ static inline void mtd_resume(struct mtd_info *mtd) mtd->_resume(mtd); } -static inline int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs) -{ - if (!mtd->_block_isbad) - return 0; - return mtd->_block_isbad(mtd, ofs); -} - -static inline int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs) -{ - if (!mtd->_block_markbad) - return -EOPNOTSUPP; - return mtd->_block_markbad(mtd, ofs); -} - static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd) { if (mtd->erasesize_shift) |