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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef SELFTESTS_VFIO_LIB_INCLUDE_LIBVFIO_IOMMU_H
#define SELFTESTS_VFIO_LIB_INCLUDE_LIBVFIO_IOMMU_H
#include <linux/list.h>
#include <linux/types.h>
#include <libvfio/assert.h>
typedef u64 iova_t;
struct iommu_mode {
const char *name;
const char *container_path;
unsigned long iommu_type;
};
extern const char *default_iommu_mode;
struct dma_region {
struct list_head link;
void *vaddr;
iova_t iova;
u64 size;
};
struct iommu {
const struct iommu_mode *mode;
int container_fd;
int iommufd;
u32 ioas_id;
struct list_head dma_regions;
};
struct iommu *iommu_init(const char *iommu_mode);
void iommu_cleanup(struct iommu *iommu);
int __iommu_map(struct iommu *iommu, struct dma_region *region);
static inline void iommu_map(struct iommu *iommu, struct dma_region *region)
{
VFIO_ASSERT_EQ(__iommu_map(iommu, region), 0);
}
int __iommu_unmap(struct iommu *iommu, struct dma_region *region, u64 *unmapped);
static inline void iommu_unmap(struct iommu *iommu, struct dma_region *region)
{
VFIO_ASSERT_EQ(__iommu_unmap(iommu, region, NULL), 0);
}
int __iommu_unmap_all(struct iommu *iommu, u64 *unmapped);
static inline void iommu_unmap_all(struct iommu *iommu)
{
VFIO_ASSERT_EQ(__iommu_unmap_all(iommu, NULL), 0);
}
int __iommu_hva2iova(struct iommu *iommu, void *vaddr, iova_t *iova);
iova_t iommu_hva2iova(struct iommu *iommu, void *vaddr);
struct iommu_iova_range *iommu_iova_ranges(struct iommu *iommu, u32 *nranges);
/*
* Generator for VFIO selftests fixture variants that replicate across all
* possible IOMMU modes. Tests must define FIXTURE_VARIANT_ADD_IOMMU_MODE()
* which should then use FIXTURE_VARIANT_ADD() to create the variant.
*/
#define FIXTURE_VARIANT_ADD_ALL_IOMMU_MODES(...) \
FIXTURE_VARIANT_ADD_IOMMU_MODE(vfio_type1_iommu, ##__VA_ARGS__); \
FIXTURE_VARIANT_ADD_IOMMU_MODE(vfio_type1v2_iommu, ##__VA_ARGS__); \
FIXTURE_VARIANT_ADD_IOMMU_MODE(iommufd_compat_type1, ##__VA_ARGS__); \
FIXTURE_VARIANT_ADD_IOMMU_MODE(iommufd_compat_type1v2, ##__VA_ARGS__); \
FIXTURE_VARIANT_ADD_IOMMU_MODE(iommufd, ##__VA_ARGS__)
#endif /* SELFTESTS_VFIO_LIB_INCLUDE_LIBVFIO_IOMMU_H */
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