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a39af6f7 JB |
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 | /* | |
395cf969 | 21 | * See Documentation/DMA-API-HOWTO.txt and |
a39af6f7 | 22 | * Documentation/DMA-API.txt for documentation. |
a39af6f7 JB |
23 | */ |
24 | ||
25 | #include <linux/dma-debug.h> | |
a39af6f7 | 26 | #include <linux/kmemcheck.h> |
7b903e6c | 27 | #include <linux/dma-mapping.h> |
a39af6f7 JB |
28 | |
29 | #define DMA_ERROR_CODE (~(dma_addr_t)0x0) | |
30 | ||
7b903e6c | 31 | extern struct dma_map_ops or1k_dma_map_ops; |
a39af6f7 | 32 | |
7b903e6c | 33 | static inline struct dma_map_ops *get_dma_ops(struct device *dev) |
a39af6f7 | 34 | { |
7b903e6c | 35 | return &or1k_dma_map_ops; |
a39af6f7 JB |
36 | } |
37 | ||
ee196371 | 38 | #define HAVE_ARCH_DMA_SUPPORTED 1 |
a39af6f7 JB |
39 | static inline int dma_supported(struct device *dev, u64 dma_mask) |
40 | { | |
41 | /* Support 32 bit DMA mask exclusively */ | |
707b38a0 JB |
42 | return dma_mask == DMA_BIT_MASK(32); |
43 | } | |
44 | ||
ee196371 CH |
45 | #include <asm-generic/dma-mapping-common.h> |
46 | ||
a39af6f7 | 47 | #endif /* __ASM_OPENRISC_DMA_MAPPING_H */ |