diff --git a/include/asm-sparc64/dma-mapping.h b/include/asm-sparc64/dma-mapping.h
index 0a1006692bb2..a72a5f271f31 100644
--- a/include/asm-sparc64/dma-mapping.h
+++ b/include/asm-sparc64/dma-mapping.h
@@ -127,6 +127,13 @@ static inline int dma_mapping_error(dma_addr_t dma_addr)
 	return (dma_addr == DMA_ERROR_CODE);
 }
 
+static inline int dma_get_cache_alignment(void)
+{
+	/* no easy way to get cache size on all processors, so return
+	 * the maximum possible, to be safe */
+	return (1 << INTERNODE_CACHE_SHIFT);
+}
+
 #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_is_consistent(d, h)	(1)