diff options
Diffstat (limited to 'arch/alpha/include/asm/dma-mapping.h')
-rw-r--r-- | arch/alpha/include/asm/dma-mapping.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h new file mode 100644 index 000000000000..a5801ae02e4b --- /dev/null +++ b/arch/alpha/include/asm/dma-mapping.h | |||
@@ -0,0 +1,69 @@ | |||
1 | #ifndef _ALPHA_DMA_MAPPING_H | ||
2 | #define _ALPHA_DMA_MAPPING_H | ||
3 | |||
4 | |||
5 | #ifdef CONFIG_PCI | ||
6 | |||
7 | #include <linux/pci.h> | ||
8 | |||
9 | #define dma_map_single(dev, va, size, dir) \ | ||
10 | pci_map_single(alpha_gendev_to_pci(dev), va, size, dir) | ||
11 | #define dma_unmap_single(dev, addr, size, dir) \ | ||
12 | pci_unmap_single(alpha_gendev_to_pci(dev), addr, size, dir) | ||
13 | #define dma_alloc_coherent(dev, size, addr, gfp) \ | ||
14 | __pci_alloc_consistent(alpha_gendev_to_pci(dev), size, addr, gfp) | ||
15 | #define dma_free_coherent(dev, size, va, addr) \ | ||
16 | pci_free_consistent(alpha_gendev_to_pci(dev), size, va, addr) | ||
17 | #define dma_map_page(dev, page, off, size, dir) \ | ||
18 | pci_map_page(alpha_gendev_to_pci(dev), page, off, size, dir) | ||
19 | #define dma_unmap_page(dev, addr, size, dir) \ | ||
20 | pci_unmap_page(alpha_gendev_to_pci(dev), addr, size, dir) | ||
21 | #define dma_map_sg(dev, sg, nents, dir) \ | ||
22 | pci_map_sg(alpha_gendev_to_pci(dev), sg, nents, dir) | ||
23 | #define dma_unmap_sg(dev, sg, nents, dir) \ | ||
24 | pci_unmap_sg(alpha_gendev_to_pci(dev), sg, nents, dir) | ||
25 | #define dma_supported(dev, mask) \ | ||
26 | pci_dma_supported(alpha_gendev_to_pci(dev), mask) | ||
27 | #define dma_mapping_error(dev, addr) \ | ||
28 | pci_dma_mapping_error(alpha_gendev_to_pci(dev), addr) | ||
29 | |||
30 | #else /* no PCI - no IOMMU. */ | ||
31 | |||
32 | struct scatterlist; | ||
33 | void *dma_alloc_coherent(struct device *dev, size_t size, | ||
34 | dma_addr_t *dma_handle, gfp_t gfp); | ||
35 | int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, | ||
36 | enum dma_data_direction direction); | ||
37 | |||
38 | #define dma_free_coherent(dev, size, va, addr) \ | ||
39 | free_pages((unsigned long)va, get_order(size)) | ||
40 | #define dma_supported(dev, mask) (mask < 0x00ffffffUL ? 0 : 1) | ||
41 | #define dma_map_single(dev, va, size, dir) virt_to_phys(va) | ||
42 | #define dma_map_page(dev, page, off, size, dir) (page_to_pa(page) + off) | ||
43 | |||
44 | #define dma_unmap_single(dev, addr, size, dir) ((void)0) | ||
45 | #define dma_unmap_page(dev, addr, size, dir) ((void)0) | ||
46 | #define dma_unmap_sg(dev, sg, nents, dir) ((void)0) | ||
47 | |||
48 | #define dma_mapping_error(dev, addr) (0) | ||
49 | |||
50 | #endif /* !CONFIG_PCI */ | ||
51 | |||
52 | #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) | ||
53 | #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) | ||
54 | #define dma_is_consistent(d, h) (1) | ||
55 | |||
56 | int dma_set_mask(struct device *dev, u64 mask); | ||
57 | |||
58 | #define dma_sync_single_for_cpu(dev, addr, size, dir) ((void)0) | ||
59 | #define dma_sync_single_for_device(dev, addr, size, dir) ((void)0) | ||
60 | #define dma_sync_single_range(dev, addr, off, size, dir) ((void)0) | ||
61 | #define dma_sync_sg_for_cpu(dev, sg, nents, dir) ((void)0) | ||
62 | #define dma_sync_sg_for_device(dev, sg, nents, dir) ((void)0) | ||
63 | #define dma_cache_sync(dev, va, size, dir) ((void)0) | ||
64 | #define dma_sync_single_range_for_cpu(dev, addr, offset, size, dir) ((void)0) | ||
65 | #define dma_sync_single_range_for_device(dev, addr, offset, size, dir) ((void)0) | ||
66 | |||
67 | #define dma_get_cache_alignment() L1_CACHE_BYTES | ||
68 | |||
69 | #endif /* _ALPHA_DMA_MAPPING_H */ | ||