diff options
Diffstat (limited to 'include/linux/mtd/mtd.h')
| -rw-r--r-- | include/linux/mtd/mtd.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 8485e42a9b09..9d5306bad117 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -110,6 +110,21 @@ struct mtd_oob_ops { uint8_t *oobbuf; }; +#define MTD_MAX_OOBFREE_ENTRIES_LARGE 32 +#define MTD_MAX_ECCPOS_ENTRIES_LARGE 448 +/* + * Internal ECC layout control structure. For historical reasons, there is a + * similar, smaller struct nand_ecclayout_user (in mtd-abi.h) that is retained + * for export to user-space via the ECCGETLAYOUT ioctl. + * nand_ecclayout should be expandable in the future simply by the above macros. + */ +struct nand_ecclayout { + __u32 eccbytes; + __u32 eccpos[MTD_MAX_ECCPOS_ENTRIES_LARGE]; + __u32 oobavail; + struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE]; +}; + struct mtd_info { u_char type; uint32_t flags; @@ -129,6 +144,17 @@ struct mtd_info { */ uint32_t writesize; + /* + * Size of the write buffer used by the MTD. MTD devices having a write + * buffer can write multiple writesize chunks at a time. E.g. while + * writing 4 * writesize bytes to a device with 2 * writesize bytes + * buffer the MTD driver can (but doesn't have to) do 2 writesize + * operations, but not 4. Currently, all NANDs have writebufsize + * equivalent to writesize (NAND page size). Some NOR flashes do have + * writebufsize greater than writesize. + */ + uint32_t writebufsize; + uint32_t oobsize; // Amount of OOB data per block (e.g. 16) uint32_t oobavail; // Available OOB bytes per block |