diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
new file mode 100644
index 0000000..58c32b5
--- /dev/null
+++ b/fs/btrfs/disk-io.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <common.h>
+#include <fs_internal.h>
+#include "disk-io.h"
+#include "crypto/hash.h"
+
+int btrfs_csum_data(u16 csum_type, const u8 *data, u8 *out, size_t len)
+{
+	memset(out, 0, BTRFS_CSUM_SIZE);
+
+	switch (csum_type) {
+	case BTRFS_CSUM_TYPE_CRC32:
+		return hash_crc32c(data, len, out);
+	case BTRFS_CSUM_TYPE_XXHASH:
+		return hash_xxhash(data, len, out);
+	case BTRFS_CSUM_TYPE_SHA256:
+		return hash_sha256(data, len, out);
+	default:
+		printf("Unknown csum type %d\n", csum_type);
+		return -EINVAL;
+	}
+}