68 строки
2.6 KiB
C
68 строки
2.6 KiB
C
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#ifndef _ALPHA_DMA_MAPPING_H
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#define _ALPHA_DMA_MAPPING_H
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#include <linux/config.h>
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#ifdef CONFIG_PCI
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#include <linux/pci.h>
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#define dma_map_single(dev, va, size, dir) \
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pci_map_single(alpha_gendev_to_pci(dev), va, size, dir)
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#define dma_unmap_single(dev, addr, size, dir) \
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pci_unmap_single(alpha_gendev_to_pci(dev), addr, size, dir)
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#define dma_alloc_coherent(dev, size, addr, gfp) \
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pci_alloc_consistent(alpha_gendev_to_pci(dev), size, addr)
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#define dma_free_coherent(dev, size, va, addr) \
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pci_free_consistent(alpha_gendev_to_pci(dev), size, va, addr)
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#define dma_map_page(dev, page, off, size, dir) \
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pci_map_single(alpha_gendev_to_pci(dev), page, off, size, dir)
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#define dma_unmap_page(dev, addr, size, dir) \
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pci_unmap_page(alpha_gendev_to_pci(dev), addr, size, dir)
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#define dma_map_sg(dev, sg, nents, dir) \
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pci_map_sg(alpha_gendev_to_pci(dev), sg, nents, dir)
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#define dma_unmap_sg(dev, sg, nents, dir) \
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pci_unmap_sg(alpha_gendev_to_pci(dev), sg, nents, dir)
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#define dma_supported(dev, mask) \
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pci_dma_supported(alpha_gendev_to_pci(dev), mask)
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#define dma_mapping_error(addr) \
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pci_dma_mapping_error(addr)
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#else /* no PCI - no IOMMU. */
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void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, int gfp);
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int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
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enum dma_data_direction direction);
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#define dma_free_coherent(dev, size, va, addr) \
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free_pages((unsigned long)va, get_order(size))
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#define dma_supported(dev, mask) (mask < 0x00ffffffUL ? 0 : 1)
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#define dma_map_single(dev, va, size, dir) virt_to_phys(va)
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#define dma_map_page(dev, page, off, size, dir) (page_to_pa(page) + off)
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#define dma_unmap_single(dev, addr, size, dir) do { } while (0)
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#define dma_unmap_page(dev, addr, size, dir) do { } while (0)
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#define dma_unmap_sg(dev, sg, nents, dir) do { } while (0)
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#define dma_mapping_error(addr) (0)
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#endif /* !CONFIG_PCI */
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#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
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#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
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#define dma_is_consistent(dev) (1)
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int dma_set_mask(struct device *dev, u64 mask);
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#define dma_sync_single_for_cpu(dev, addr, size, dir) do { } while (0)
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#define dma_sync_single_for_device(dev, addr, size, dir) do { } while (0)
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#define dma_sync_single_range(dev, addr, off, size, dir) do { } while (0)
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#define dma_sync_sg_for_cpu(dev, sg, nents, dir) do { } while (0)
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#define dma_sync_sg_for_device(dev, sg, nents, dir) do { } while (0)
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#define dma_cache_sync(va, size, dir) do { } while (0)
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#define dma_get_cache_alignment() L1_CACHE_BYTES
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#endif /* _ALPHA_DMA_MAPPING_H */
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