diff options
Diffstat (limited to 'include/linux/mtd/mtd.h')
| -rw-r--r-- | include/linux/mtd/mtd.h | 50 |
1 files changed, 40 insertions, 10 deletions
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index a7bc521c2..708f4f203 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -1,5 +1,5 @@ -/* $Id: mtd.h,v 1.17 2000/07/04 07:24:49 jgg Exp $ */ +/* $Id: mtd.h,v 1.26 2000/10/30 17:18:04 sjhill Exp $ */ #ifndef __MTD_MTD_H__ #define __MTD_MTD_H__ @@ -10,6 +10,7 @@ #include <linux/types.h> #include <linux/mtd/compatmac.h> #include <linux/module.h> +#include <linux/uio.h> #endif /* __KERNEL__ */ @@ -61,7 +62,8 @@ struct mtd_oob_buf { // Types of automatic ECC/Checksum available #define MTD_ECC_NONE 0 // No automatic ECC available -#define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip +#define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip +#define MTD_ECC_SW 2 // SW ECC for Toshiba & Samsung devices struct mtd_info_user { u_char type; @@ -78,6 +80,8 @@ 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) #ifndef __KERNEL__ @@ -123,6 +127,7 @@ struct mtd_info { // Kernel-only stuff starts here. char *name; + int index; u_long bank_size; @@ -144,9 +149,22 @@ struct mtd_info { 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); - + + /* iovec-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 iovec *vecs, unsigned long count, loff_t from, size_t *retlen); + int (*writev) (struct mtd_info *mtd, const struct iovec *vecs, unsigned long count, loff_t to, size_t *retlen); + + /* 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); @@ -198,20 +216,32 @@ extern int unregister_mtd_user (struct mtd_notifier *old); #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) #endif /* MTDC */ -/* Debugging macros */ - -#ifdef DEBUGLVL -#define DEBUG(n, args...) if (DEBUGLVL>(n)) printk(KERN_DEBUG args) -#else +/* + * 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...) \ + if (n <= CONFIG_MTD_DEBUG_VERBOSE) { \ + printk(KERN_INFO args); \ + } +#else /* CONFIG_MTD_DEBUG */ #define DEBUG(n, args...) -#endif +#endif /* CONFIG_MTD_DEBUG */ #endif /* __KERNEL__ */ - #endif /* __MTD_MTD_H__ */ |