1 files changed, 49 insertions, 0 deletions
diff --git a/include/linux/dma-heap.h b/include/linux/dma-heap.h
new file mode 100644
index 000000000000..27d15f60950a
--- /dev/null
+++ b/include/linux/dma-heap.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * DMABUF Heaps Allocation Infrastructure
+ *
+ * Copyright (C) 2011 Google, Inc.
+ * Copyright (C) 2019 Linaro Ltd.
+ */
+
+#ifndef _DMA_HEAPS_H
+#define _DMA_HEAPS_H
+
+#include <linux/types.h>
+
+struct dma_heap;
+
+/**
+ * struct dma_heap_ops - ops to operate on a given heap
+ * @allocate:	allocate dmabuf and return struct dma_buf ptr
+ *
+ * allocate returns dmabuf on success, ERR_PTR(-errno) on error.
+ */
+struct dma_heap_ops {
+	struct dma_buf *(*allocate)(struct dma_heap *heap,
+				    unsigned long len,
+				    u32 fd_flags,
+				    u64 heap_flags);
+};
+
+/**
+ * struct dma_heap_export_info - information needed to export a new dmabuf heap
+ * @name:	used for debugging/device-node name
+ * @ops:	ops struct for this heap
+ * @priv:	heap exporter private data
+ *
+ * Information needed to export a new dmabuf heap.
+ */
+struct dma_heap_export_info {
+	const char *name;
+	const struct dma_heap_ops *ops;
+	void *priv;
+};
+
+void *dma_heap_get_drvdata(struct dma_heap *heap);
+
+const char *dma_heap_get_name(struct dma_heap *heap);
+
+struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info);
+
+#endif /* _DMA_HEAPS_H */