1 #ifndef _ALPHA_DMA_MAPPING_H
2 #define _ALPHA_DMA_MAPPING_H
4 #include <linux/config.h>
10 #define dma_map_single(dev, va, size, dir) \
11 pci_map_single(alpha_gendev_to_pci(dev), va, size, dir)
12 #define dma_unmap_single(dev, addr, size, dir) \
13 pci_unmap_single(alpha_gendev_to_pci(dev), addr, size, dir)
14 #define dma_alloc_coherent(dev, size, addr, gfp) \
15 pci_alloc_consistent(alpha_gendev_to_pci(dev), size, addr)
16 #define dma_free_coherent(dev, size, va, addr) \
17 pci_free_consistent(alpha_gendev_to_pci(dev), size, va, addr)
18 #define dma_map_page(dev, page, off, size, dir) \
19 pci_map_single(alpha_gendev_to_pci(dev), page, off, size, dir)
20 #define dma_unmap_page(dev, addr, size, dir) \
21 pci_unmap_page(alpha_gendev_to_pci(dev), addr, size, dir)
22 #define dma_map_sg(dev, sg, nents, dir) \
23 pci_map_sg(alpha_gendev_to_pci(dev), sg, nents, dir)
24 #define dma_unmap_sg(dev, sg, nents, dir) \
25 pci_unmap_sg(alpha_gendev_to_pci(dev), sg, nents, dir)
26 #define dma_supported(dev, mask) \
27 pci_dma_supported(alpha_gendev_to_pci(dev), mask)
28 #define dma_mapping_error(addr) \
29 pci_dma_mapping_error(addr)
31 #else /* no PCI - no IOMMU. */
33 void *dma_alloc_coherent(struct device *dev, size_t size,
34 dma_addr_t *dma_handle, int gfp);
35 int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
36 enum dma_data_direction direction);
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)
44 #define dma_unmap_single(dev, addr, size, dir) do { } while (0)
45 #define dma_unmap_page(dev, addr, size, dir) do { } while (0)
46 #define dma_unmap_sg(dev, sg, nents, dir) do { } while (0)
48 #define dma_mapping_error(addr) (0)
50 #endif /* !CONFIG_PCI */
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(dev) (1)
56 int dma_set_mask(struct device *dev, u64 mask);
58 #define dma_sync_single_for_cpu(dev, addr, size, dir) do { } while (0)
59 #define dma_sync_single_for_device(dev, addr, size, dir) do { } while (0)
60 #define dma_sync_single_range(dev, addr, off, size, dir) do { } while (0)
61 #define dma_sync_sg_for_cpu(dev, sg, nents, dir) do { } while (0)
62 #define dma_sync_sg_for_device(dev, sg, nents, dir) do { } while (0)
63 #define dma_cache_sync(va, size, dir) do { } while (0)
65 #define dma_get_cache_alignment() L1_CACHE_BYTES
67 #endif /* _ALPHA_DMA_MAPPING_H */