release/src-rt-6.x/linux/linux-2.6/include/asm-alpha/dma-mapping.h

   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)
  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(addr)                         \
  28                 pci_dma_mapping_error(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(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 */