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#ifndef __ASM_MACH_JAZZ_DMA_COHERENCE_H
 9#define __ASM_MACH_JAZZ_DMA_COHERENCE_H
10
11#include <asm/jazzdma.h>
12
13struct device;
14
15static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
16{
17	return vdma_alloc(virt_to_phys(addr), size);
18}
19
20static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
21	struct page *page)
22{
23	return vdma_alloc(page_to_phys(page), PAGE_SIZE);
24}
25
26static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
27	dma_addr_t dma_addr)
28{
29	return vdma_log2phys(dma_addr);
30}
31
32static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr,
33	size_t size, enum dma_data_direction direction)
34{
35	vdma_free(dma_addr);
36}
37
38static inline int plat_dma_supported(struct device *dev, u64 mask)
39{
40	/*
41	 * we fall back to GFP_DMA when the mask isn't all 1s,
42	 * so we can't guarantee allocations that must be
43	 * within a tighter range than GFP_DMA..
44	 */
45	if (mask < DMA_BIT_MASK(24))
46		return 0;
47
48	return 1;
49}
50
51static inline void plat_extra_sync_for_device(struct device *dev)
52{
53}
54
55static inline int plat_dma_mapping_error(struct device *dev,
56					 dma_addr_t dma_addr)
57{
58	return 0;
59}
60
61static inline int plat_device_is_coherent(struct device *dev)
62{
63	return 0;
64}
65
66#endif /* __ASM_MACH_JAZZ_DMA_COHERENCE_H */