arch/arm/include/asm/dma-iommu.h

   1 #ifndef ASMARM_DMA_IOMMU_H
   2 #define ASMARM_DMA_IOMMU_H
   3
   4 #ifdef __KERNEL__
   5
   6 #include <linux/mm_types.h>
   7 #include <linux/scatterlist.h>
   8 #include <linux/dma-debug.h>
   9 #include <linux/kmemcheck.h>
  10
  11 struct dma_iommu_mapping {
  12         /* iommu specific data */
  13         struct iommu_domain     *domain;
  14
  15         void                    *bitmap;
  16         size_t                  bits;
  17         unsigned int            order;
  18         dma_addr_t              base;
  19
  20         spinlock_t              lock;
  21         struct kref             kref;
  22 };
  23
  24 struct dma_iommu_mapping *
  25 arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, size_t size,
  26                          int order);
  27
  28 void arm_iommu_release_mapping(struct dma_iommu_mapping *mapping);
  29
  30 int arm_iommu_attach_device(struct device *dev,
  31                                         struct dma_iommu_mapping *mapping);
  32
  33 #endif /* __KERNEL__ */
  34 #endif