diff options
| -rw-r--r-- | drivers/block/blkmap.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/block/blkmap.c b/drivers/block/blkmap.c index 34eed1380dc..08f68570224 100644 --- a/drivers/block/blkmap.c +++ b/drivers/block/blkmap.c @@ -17,6 +17,22 @@ struct blkmap; /** + * define BLKMAP_SLICE_LINEAR - Linear mapping to another block device + * + * This blkmap slice type is used for mapping to other existing block + * devices. + */ +#define BLKMAP_SLICE_LINEAR BIT(0) + +/** + * define BLKMAP_SLICE_MEM - Linear mapping to memory based block device + * + * This blkmap slice type is used for mapping to memory based block + * devices, like ramdisks. + */ +#define BLKMAP_SLICE_MEM BIT(1) + +/** * struct blkmap_slice - Region mapped to a blkmap * * Common data for a region mapped to a blkmap, specialized by each @@ -25,12 +41,14 @@ struct blkmap; * @node: List node used to associate this slice with a blkmap * @blknr: Start block number of the mapping * @blkcnt: Number of blocks covered by this mapping + * @attr: Attributes of blkmap slice */ struct blkmap_slice { struct list_head node; lbaint_t blknr; lbaint_t blkcnt; + uint attr; /** * @read: - Read from slice @@ -169,6 +187,7 @@ int blkmap_map_linear(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt, .slice = { .blknr = blknr, .blkcnt = blkcnt, + .attr = BLKMAP_SLICE_LINEAR, .read = blkmap_linear_read, .write = blkmap_linear_write, @@ -248,6 +267,7 @@ int __blkmap_map_mem(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt, .slice = { .blknr = blknr, .blkcnt = blkcnt, + .attr = BLKMAP_SLICE_MEM, .read = blkmap_mem_read, .write = blkmap_mem_write, |