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-rw-r--r--arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
new file mode 100644
index 000000000000..f30fce92aabb
--- /dev/null
+++ b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
@@ -0,0 +1,64 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
7 *
8 *
9 * Similar to mach-generic/dma-coherence.h except
10 * plat_device_is_coherent hard coded to return 1.
11 *
12 */
13#ifndef __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H
14#define __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H
15
16struct device;
17
18dma_addr_t octeon_map_dma_mem(struct device *, void *, size_t);
19void octeon_unmap_dma_mem(struct device *, dma_addr_t);
20
21static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
22 size_t size)
23{
24 return octeon_map_dma_mem(dev, addr, size);
25}
26
27static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
28 struct page *page)
29{
30 return octeon_map_dma_mem(dev, page_address(page), PAGE_SIZE);
31}
32
33static inline unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
34{
35 return dma_addr;
36}
37
38static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr)
39{
40 octeon_unmap_dma_mem(dev, dma_addr);
41}
42
43static inline int plat_dma_supported(struct device *dev, u64 mask)
44{
45 return 1;
46}
47
48static inline void plat_extra_sync_for_device(struct device *dev)
49{
50 mb();
51}
52
53static inline int plat_device_is_coherent(struct device *dev)
54{
55 return 1;
56}
57
58static inline int plat_dma_mapping_error(struct device *dev,
59 dma_addr_t dma_addr)
60{
61 return dma_addr == -1;
62}
63
64#endif /* __ASM_MACH_CAVIUM_OCTEON_DMA_COHERENCE_H */