diff options
| author | Tobias Waldekranz | 2023-02-16 16:33:51 +0100 |
|---|---|---|
| committer | Tom Rini | 2023-04-05 10:54:47 -0400 |
| commit | 762dc78bdea3468e8cd35c01f91def13974948f1 (patch) | |
| tree | 4bae2048970ae039b9a1f65ad527aafc48cdf31c /include/blkmap.h | |
| parent | 15d9e99a274df5d9b260f75f42f7c394e5fe0e42 (diff) | |
blk: blkmap: Add linear device mapping support
Allow a slice of an existing block device to be mapped to a
blkmap. This means that filesystems that are not stored at exact
partition boundaries can be accessed by remapping a slice of the
existing device to a blkmap device.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/blkmap.h')
| -rw-r--r-- | include/blkmap.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/blkmap.h b/include/blkmap.h index 74baeb19f81..af54583c7dd 100644 --- a/include/blkmap.h +++ b/include/blkmap.h @@ -8,6 +8,19 @@ #define _BLKMAP_H /** + * blkmap_map_linear() - Map region of other block device + * + * @dev: Blkmap to create the mapping on + * @blknr: Start block number of the mapping + * @blkcnt: Number of blocks to map + * @lblk: The target block device of the mapping + * @lblknr: The start block number of the target device + * Returns: 0 on success, negative error code on failure + */ +int blkmap_map_linear(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt, + struct udevice *lblk, lbaint_t lblknr); + +/** * blkmap_map_mem() - Map region of memory * * @dev: Blkmap to create the mapping on |