arch/ia64/dig/dig_vtd_iommu.c

   1 #include <linux/types.h>
   2 #include <linux/kernel.h>
   3 #include <linux/module.h>
   4 #include <linux/dma-mapping.h>
   5 #include <linux/intel-iommu.h>
   6
   7 void *
   8 vtd_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
   9                  gfp_t flags)
  10 {
  11         return intel_alloc_coherent(dev, size, dma_handle, flags);
  12 }
  13 EXPORT_SYMBOL_GPL(vtd_alloc_coherent);
  14
  15 void
  16 vtd_free_coherent(struct device *dev, size_t size, void *vaddr,
  17                  dma_addr_t dma_handle)
  18 {
  19         intel_free_coherent(dev, size, vaddr, dma_handle);
  20 }
  21 EXPORT_SYMBOL_GPL(vtd_free_coherent);
  22
  23 dma_addr_t
  24 vtd_map_single_attrs(struct device *dev, void *addr, size_t size,
  25                      int dir, struct dma_attrs *attrs)
  26 {
  27         return intel_map_single(dev, (phys_addr_t)addr, size, dir);
  28 }
  29 EXPORT_SYMBOL_GPL(vtd_map_single_attrs);
  30
  31 void
  32 vtd_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
  33                        int dir, struct dma_attrs *attrs)
  34 {
  35         intel_unmap_single(dev, iova, size, dir);
  36 }
  37 EXPORT_SYMBOL_GPL(vtd_unmap_single_attrs);
  38
  39 int
  40 vtd_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
  41                  int dir, struct dma_attrs *attrs)
  42 {
  43         return intel_map_sg(dev, sglist, nents, dir);
  44 }
  45 EXPORT_SYMBOL_GPL(vtd_map_sg_attrs);
  46
  47 void
  48 vtd_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
  49                    int nents, int dir, struct dma_attrs *attrs)
  50 {
  51         intel_unmap_sg(dev, sglist, nents, dir);
  52 }
  53 EXPORT_SYMBOL_GPL(vtd_unmap_sg_attrs);
  54
  55 int
  56 vtd_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
  57 {
  58         return 0;
  59 }
  60 EXPORT_SYMBOL_GPL(vtd_dma_mapping_error);
  61
  62 extern int iommu_dma_supported(struct device *dev, u64 mask);
  63
  64 struct dma_mapping_ops vtd_dma_ops = {
  65         .alloc_coherent         = vtd_alloc_coherent,
  66         .free_coherent          = vtd_free_coherent,
  67         .map_single_attrs       = vtd_map_single_attrs,
  68         .unmap_single_attrs     = vtd_unmap_single_attrs,
  69         .map_sg_attrs           = vtd_map_sg_attrs,
  70         .unmap_sg_attrs         = vtd_unmap_sg_attrs,
  71         .sync_single_for_cpu    = machvec_dma_sync_single,
  72         .sync_sg_for_cpu        = machvec_dma_sync_sg,
  73         .sync_single_for_device = machvec_dma_sync_single,
  74         .sync_sg_for_device     = machvec_dma_sync_sg,
  75         .dma_supported_op       = iommu_dma_supported,
  76         .mapping_error          = vtd_dma_mapping_error,
  77 };