diff --git a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
index f768f6f..be8fb42 100644
--- a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
+++ b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
@@ -15,13 +15,12 @@
 
 struct device;
 
-dma_addr_t octeon_map_dma_mem(struct device *, void *, size_t);
-void octeon_unmap_dma_mem(struct device *, dma_addr_t);
+extern void octeon_pci_dma_init(void);
 
 static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
 	size_t size)
 {
-	return octeon_map_dma_mem(dev, addr, size);
+	BUG();
 }
 
 static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
@@ -33,23 +32,23 @@
 static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
 	dma_addr_t dma_addr)
 {
-	return dma_addr;
+	BUG();
 }
 
 static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr,
 	size_t size, enum dma_data_direction direction)
 {
-	octeon_unmap_dma_mem(dev, dma_addr);
+	BUG();
 }
 
 static inline int plat_dma_supported(struct device *dev, u64 mask)
 {
-	return 1;
+	BUG();
 }
 
 static inline void plat_extra_sync_for_device(struct device *dev)
 {
-	mb();
+	BUG();
 }
 
 static inline int plat_device_is_coherent(struct device *dev)
@@ -60,7 +59,14 @@
 static inline int plat_dma_mapping_error(struct device *dev,
 					 dma_addr_t dma_addr)
 {
-	return dma_addr == -1;
+	BUG();
 }
 
+dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
+phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr);
+
+struct dma_map_ops;
+extern struct dma_map_ops *octeon_pci_dma_map_ops;
+extern char *octeon_swiotlb;
+
 #endif /* __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H */