1 files changed, 47 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h
new file mode 100644
index 00000000..4567aca6
--- /dev/null
+++ b/arch/alpha/include/asm/dma-mapping.h
@@ -0,0 +1,47 @@
+#ifndef _ALPHA_DMA_MAPPING_H
+#define _ALPHA_DMA_MAPPING_H
+
+#include <linux/dma-attrs.h>
+
+extern struct dma_map_ops *dma_ops;
+
+static inline struct dma_map_ops *get_dma_ops(struct device *dev)
+{
+	return dma_ops;
+}
+
+#include <asm-generic/dma-mapping-common.h>
+
+static inline void *dma_alloc_coherent(struct device *dev, size_t size,
+				       dma_addr_t *dma_handle, gfp_t gfp)
+{
+	return get_dma_ops(dev)->alloc_coherent(dev, size, dma_handle, gfp);
+}
+
+static inline void dma_free_coherent(struct device *dev, size_t size,
+				     void *vaddr, dma_addr_t dma_handle)
+{
+	get_dma_ops(dev)->free_coherent(dev, size, vaddr, dma_handle);
+}
+
+static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+	return get_dma_ops(dev)->mapping_error(dev, dma_addr);
+}
+
+static inline int dma_supported(struct device *dev, u64 mask)
+{
+	return get_dma_ops(dev)->dma_supported(dev, mask);
+}
+
+static inline int dma_set_mask(struct device *dev, u64 mask)
+{
+	return get_dma_ops(dev)->set_dma_mask(dev, mask);
+}
+
+#define dma_alloc_noncoherent(d, s, h, f)	dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h)	dma_free_coherent(d, s, v, h)
+
+#define dma_cache_sync(dev, va, size, dir)		  ((void)0)
+
+#endif	/* _ALPHA_DMA_MAPPING_H */