| /* |
| * $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__ |
| |
| #include <linux/types.h> |
| |
| struct erase_info_user { |
| __u32 start; |
| __u32 length; |
| }; |
| |
| struct mtd_oob_buf { |
| __u32 start; |
| __u32 length; |
| unsigned char *ptr; |
| }; |
| |
| #define MTD_ABSENT 0 |
| #define MTD_RAM 1 |
| #define MTD_ROM 2 |
| #define MTD_NORFLASH 3 |
| #define MTD_NANDFLASH 4 |
| #define MTD_PEROM 5 |
| #define MTD_OTHER 14 |
| #define MTD_UNKNOWN 15 |
| |
| #define MTD_CLEAR_BITS 1 /* Bits can be cleared (flash) */ |
| #define MTD_SET_BITS 2 /* Bits can be set */ |
| #define MTD_ERASEABLE 4 /* Has an erase function */ |
| #define MTD_WRITEB_WRITEABLE 8 /* Direct IO is possible */ |
| #define MTD_VOLATILE 16 /* Set for RAMs */ |
| #define MTD_XIP 32 /* eXecute-In-Place possible */ |
| #define MTD_OOB 64 /* Out-of-band data (NAND flash) */ |
| #define MTD_ECC 128 /* Device capable of automatic ECC */ |
| #define MTD_NO_VIRTBLOCKS 256 /* Virtual blocks not allowed */ |
| |
| /* Some common devices / combinations of capabilities */ |
| #define MTD_CAP_ROM 0 |
| #define MTD_CAP_RAM (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE) |
| #define MTD_CAP_NORFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE) |
| #define MTD_CAP_NANDFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB) |
| #define MTD_WRITEABLE (MTD_CLEAR_BITS|MTD_SET_BITS) |
| |
| |
| /* 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_SW 2 /* SW ECC for Toshiba & Samsung devices */ |
| |
| /* 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 */ |
| |
| struct mtd_info_user { |
| __u8 type; |
| __u32 flags; |
| __u32 size; /* Total size of the MTD */ |
| __u32 erasesize; |
| __u32 oobblock; /* Size of OOB blocks (e.g. 512) */ |
| __u32 oobsize; /* Amount of OOB data per block (e.g. 16) */ |
| __u32 ecctype; |
| __u32 eccsize; |
| }; |
| |
| struct region_info_user { |
| __u32 offset; /* At which this region starts, |
| * from the beginning of the MTD */ |
| __u32 erasesize; /* For this region */ |
| __u32 numblocks; /* Number of blocks in this region */ |
| __u32 regionindex; |
| }; |
| |
| #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) |
| |
| struct nand_oobinfo { |
| __u32 useecc; |
| __u32 eccbytes; |
| __u32 oobfree[8][2]; |
| __u32 eccpos[32]; |
| }; |
| |
| #endif /* __MTD_ABI_H__ */ |