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) 2003 - 2005 Tensilica Inc.
7 * Copyright (C) 2015 Cadence Design Systems Inc.
8 */
9
10#ifndef _XTENSA_DMA_MAPPING_H
11#define _XTENSA_DMA_MAPPING_H
12
13#include <asm/cache.h>
14#include <asm/io.h>
15
16#include <asm-generic/dma-coherent.h>
17
18#include <linux/mm.h>
19#include <linux/scatterlist.h>
20
21#define DMA_ERROR_CODE		(~(dma_addr_t)0x0)
22
23extern struct dma_map_ops xtensa_dma_map_ops;
24
25static inline struct dma_map_ops *get_dma_ops(struct device *dev)
26{
27	if (dev && dev->archdata.dma_ops)
28		return dev->archdata.dma_ops;
29	else
30		return &xtensa_dma_map_ops;
31}
32
33#include <asm-generic/dma-mapping-common.h>
34
35void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
36		    enum dma_data_direction direction);
37
38static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
39{
40	return (dma_addr_t)paddr;
41}
42
43static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
44{
45	return (phys_addr_t)daddr;
46}
47
48#endif	/* _XTENSA_DMA_MAPPING_H */
49