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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ALPHA_DMA_MAPPING_H
2#define _ALPHA_DMA_MAPPING_H
3
4#include <linux/config.h>
5
6#ifdef CONFIG_PCI
7
8#include <linux/pci.h>
9
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)
30
31#else /* no PCI - no IOMMU. */
32
33void *dma_alloc_coherent(struct device *dev, size_t size,
34 dma_addr_t *dma_handle, int gfp);
35int 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) 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)
47
48#define dma_mapping_error(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(dev) (1)
55
56int dma_set_mask(struct device *dev, u64 mask);
57
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)
64
65#define dma_get_cache_alignment() L1_CACHE_BYTES
66
67#endif /* _ALPHA_DMA_MAPPING_H */