Commit | Line | Data |
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9a88cbb5 RB |
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 | #ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H | |
10 | #define __ASM_MACH_GENERIC_DMA_COHERENCE_H | |
11 | ||
12 | struct device; | |
13 | ||
a9b6590c RB |
14 | static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, |
15 | size_t size) | |
9a88cbb5 RB |
16 | { |
17 | return virt_to_phys(addr); | |
18 | } | |
19 | ||
a9b6590c RB |
20 | static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, |
21 | struct page *page) | |
9a88cbb5 RB |
22 | { |
23 | return page_to_phys(page); | |
24 | } | |
25 | ||
3807ef3f KC |
26 | static inline unsigned long plat_dma_addr_to_phys(struct device *dev, |
27 | dma_addr_t dma_addr) | |
9a88cbb5 RB |
28 | { |
29 | return dma_addr; | |
30 | } | |
31 | ||
d3f634b9 KC |
32 | static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, |
33 | size_t size, enum dma_data_direction direction) | |
9a88cbb5 RB |
34 | { |
35 | } | |
36 | ||
843aef49 DD |
37 | static inline int plat_dma_supported(struct device *dev, u64 mask) |
38 | { | |
39 | /* | |
40 | * we fall back to GFP_DMA when the mask isn't all 1s, | |
41 | * so we can't guarantee allocations that must be | |
42 | * within a tighter range than GFP_DMA.. | |
43 | */ | |
44 | if (mask < DMA_BIT_MASK(24)) | |
45 | return 0; | |
46 | ||
47 | return 1; | |
48 | } | |
49 | ||
9a88cbb5 RB |
50 | static inline int plat_device_is_coherent(struct device *dev) |
51 | { | |
b6d92b4a | 52 | return coherentio; |
9a88cbb5 RB |
53 | } |
54 | ||
68ba7cb0 | 55 | #ifndef plat_post_dma_flush |
0acbfc66 RB |
56 | static inline void plat_post_dma_flush(struct device *dev) |
57 | { | |
58 | } | |
68ba7cb0 | 59 | #endif |
0acbfc66 | 60 | |
4954a9a2 J |
61 | #ifdef CONFIG_SWIOTLB |
62 | static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) | |
63 | { | |
64 | return paddr; | |
65 | } | |
66 | ||
67 | static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) | |
68 | { | |
69 | return daddr; | |
70 | } | |
71 | #endif | |
72 | ||
9a88cbb5 | 73 | #endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */ |