1/*
 2 * OpenRISC Linux
 3 *
 4 * Linux architectural port borrowing liberally from similar works of
 5 * others.  All original copyrights apply as per the original source
 6 * declaration.
 7 *
 8 * OpenRISC implementation:
 9 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 */
16
17#ifndef __ASM_OPENRISC_DMA_MAPPING_H
18#define __ASM_OPENRISC_DMA_MAPPING_H
19
20/*
21 * See Documentation/DMA-API-HOWTO.txt and
22 * Documentation/DMA-API.txt for documentation.
23 */
24
25#include <linux/dma-debug.h>
26#include <linux/kmemcheck.h>
27#include <linux/dma-mapping.h>
28
29#define DMA_ERROR_CODE		(~(dma_addr_t)0x0)
30
31extern struct dma_map_ops or1k_dma_map_ops;
32
33static inline struct dma_map_ops *get_dma_ops(struct device *dev)
34{
35	return &or1k_dma_map_ops;
36}
37
38#define HAVE_ARCH_DMA_SUPPORTED 1
39static inline int dma_supported(struct device *dev, u64 dma_mask)
40{
41	/* Support 32 bit DMA mask exclusively */
42	return dma_mask == DMA_BIT_MASK(32);
43}
44
45#endif	/* __ASM_OPENRISC_DMA_MAPPING_H */