1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (c) 2023 Addiva Elektronik
13 * struct blkmap - Block map
15 * Data associated with a blkmap.
17 * @label: Human readable name of this blkmap
18 * @blk: Underlying block device
19 * @slices: List of slices associated with this blkmap
24 struct list_head slices;
28 * blkmap_map_linear() - Map region of other block device
30 * @dev: Blkmap to create the mapping on
31 * @blknr: Start block number of the mapping
32 * @blkcnt: Number of blocks to map
33 * @lblk: The target block device of the mapping
34 * @lblknr: The start block number of the target device
35 * Returns: 0 on success, negative error code on failure
37 int blkmap_map_linear(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
38 struct udevice *lblk, lbaint_t lblknr);
41 * blkmap_map_mem() - Map region of memory
43 * @dev: Blkmap to create the mapping on
44 * @blknr: Start block number of the mapping
45 * @blkcnt: Number of blocks to map
46 * @addr: The target memory address of the mapping
47 * Returns: 0 on success, negative error code on failure
49 int blkmap_map_mem(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
53 * blkmap_map_pmem() - Map region of physical memory
55 * Ensures that a valid physical to virtual memory mapping for the
56 * requested region is valid for the lifetime of the mapping, on
57 * architectures that require it (sandbox).
59 * @dev: Blkmap to create the mapping on
60 * @blknr: Start block number of the mapping
61 * @blkcnt: Number of blocks to map
62 * @paddr: The target physical memory address of the mapping
63 * Returns: 0 on success, negative error code on failure
65 int blkmap_map_pmem(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
69 * blkmap_from_label() - Find blkmap from label
71 * @label: Label of the requested blkmap
72 * Returns: A pointer to the blkmap on success, NULL on failure
74 struct udevice *blkmap_from_label(const char *label);
77 * blkmap_create() - Create new blkmap
79 * @label: Label of the new blkmap
80 * @devp: If not NULL, updated with the address of the resulting device
81 * Returns: 0 on success, negative error code on failure
83 int blkmap_create(const char *label, struct udevice **devp);
86 * blkmap_destroy() - Destroy blkmap
88 * @dev: The blkmap to be destroyed
89 * Returns: 0 on success, negative error code on failure
91 int blkmap_destroy(struct udevice *dev);
94 * blkmap_create_ramdisk() - Create new ramdisk with blkmap
96 * @label: Label of the new blkmap
97 * @image_addr: Target memory start address of this mapping
98 * @image_size: Target memory size of this mapping
99 * @devp: Updated with the address of the created blkmap device
100 * Returns: 0 on success, negative error code on failure
102 int blkmap_create_ramdisk(const char *label, ulong image_addr, ulong image_size,
103 struct udevice **devp);
105 #endif /* _BLKMAP_H */