1 files changed, 77 insertions, 0 deletions
diff --git a/include/blkmap.h b/include/blkmap.h
new file mode 100644
index 0000000000..af54583c7d
--- /dev/null
+++ b/include/blkmap.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2023 Addiva Elektronik
+ * Author: Tobias Waldekranz <tobias@waldekranz.com>
+ */
+
+#ifndef _BLKMAP_H
+#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
+ * @blknr: Start block number of the mapping
+ * @blkcnt: Number of blocks to map
+ * @addr: The target memory address of the mapping
+ * Returns: 0 on success, negative error code on failure
+ */
+int blkmap_map_mem(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
+		   void *addr);
+
+/**
+ * blkmap_map_pmem() - Map region of physical memory
+ *
+ * Ensures that a valid physical to virtual memory mapping for the
+ * requested region is valid for the lifetime of the mapping, on
+ * architectures that require it (sandbox).
+ *
+ * @dev: Blkmap to create the mapping on
+ * @blknr: Start block number of the mapping
+ * @blkcnt: Number of blocks to map
+ * @paddr: The target physical memory address of the mapping
+ * Returns: 0 on success, negative error code on failure
+ */
+int blkmap_map_pmem(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
+		    phys_addr_t paddr);
+
+
+/**
+ * blkmap_from_label() - Find blkmap from label
+ *
+ * @label: Label of the requested blkmap
+ * Returns: A pointer to the blkmap on success, NULL on failure
+ */
+struct udevice *blkmap_from_label(const char *label);
+
+/**
+ * blkmap_create() - Create new blkmap
+ *
+ * @label: Label of the new blkmap
+ * @devp: If not NULL, updated with the address of the resulting device
+ * Returns: 0 on success, negative error code on failure
+ */
+int blkmap_create(const char *label, struct udevice **devp);
+
+/**
+ * blkmap_destroy() - Destroy blkmap
+ *
+ * @dev: The blkmap to be destroyed
+ * Returns: 0 on success, negative error code on failure
+ */
+int blkmap_destroy(struct udevice *dev);
+
+#endif	/* _BLKMAP_H */