Commit | Line | Data |
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780bc790 AL |
1 | #ifndef _LINUX_DMA_MAPPING_H |
2 | #define _LINUX_DMA_MAPPING_H | |
3 | ||
4 | #ifdef CONFIG_HAS_DMA | |
5 | # error Virtio userspace code does not support CONFIG_HAS_DMA | |
6 | #endif | |
7 | ||
8 | #define PCI_DMA_BUS_IS_PHYS 1 | |
9 | ||
10 | enum dma_data_direction { | |
11 | DMA_BIDIRECTIONAL = 0, | |
12 | DMA_TO_DEVICE = 1, | |
13 | DMA_FROM_DEVICE = 2, | |
14 | DMA_NONE = 3, | |
15 | }; | |
16 | ||
6be3ffaa MT |
17 | #define dma_alloc_coherent(d, s, hp, f) ({ \ |
18 | void *__dma_alloc_coherent_p = kmalloc((s), (f)); \ | |
19 | *(hp) = (unsigned long)__dma_alloc_coherent_p; \ | |
20 | __dma_alloc_coherent_p; \ | |
21 | }) | |
22 | ||
23 | #define dma_free_coherent(d, s, p, h) kfree(p) | |
24 | ||
25 | #define dma_map_page(d, p, o, s, dir) (page_to_phys(p) + (o)) | |
26 | ||
27 | #define dma_map_single(d, p, s, dir) (virt_to_phys(p)) | |
28 | #define dma_mapping_error(...) (0) | |
29 | ||
30 | #define dma_unmap_single(...) do { } while (0) | |
31 | #define dma_unmap_page(...) do { } while (0) | |
32 | ||
780bc790 | 33 | #endif |