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ubi: Expose the bitrot interface

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Using UBI_IOCRPEB and UBI_IOCSPEB userspace can force
reading and scrubbing of PEBs.

In case of bitflips UBI will automatically take action
and move data to a different PEB.
This interface allows a daemon to foster your NAND.

Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger
2018-11-07 23:16:19 +01:00
parent b32b78f892
commit 663586c0a8
4 changed files with 180 additions and 0 deletions
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5
include/uapi/mtd/ubi-user.h
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@@ -171,6 +171,11 @@
/* Re-name volumes */
#define UBI_IOCRNVOL _IOW(UBI_IOC_MAGIC, 3, struct ubi_rnvol_req)
/* Read the specified PEB and scrub it if there are bitflips */
#define UBI_IOCRPEB _IOW(UBI_IOC_MAGIC, 4, __s32)
/* Force scrubbing on the specified PEB */
#define UBI_IOCSPEB _IOW(UBI_IOC_MAGIC, 5, __s32)
/* ioctl commands of the UBI control character device */
#define UBI_CTRL_IOC_MAGIC 'o'