rte_vfio.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2017 6WIND S.A.
 */
 
#ifndef _RTE_VFIO_H_
#define _RTE_VFIO_H_
 
#include <stdbool.h>
#include <stdint.h>
 
#include <rte_compat.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#ifdef RTE_EXEC_ENV_LINUX
 
#define RTE_VFIO_DIR "/dev/vfio"
#define RTE_VFIO_CONTAINER_PATH "/dev/vfio/vfio"
#define RTE_VFIO_GROUP_FMT "/dev/vfio/%u"
#define RTE_VFIO_NOIOMMU_GROUP_FMT "/dev/vfio/noiommu-%u"
#define RTE_VFIO_NOIOMMU_MODE      \
    "/sys/module/vfio/parameters/enable_unsafe_noiommu_mode"
 
#endif /* RTE_EXEC_ENV_LINUX */
 
/* we don't need an actual definition, only pointer is used */
struct vfio_device_info;
 
#define RTE_VFIO_DEFAULT_CONTAINER_FD (-1)
 
int rte_vfio_setup_device(const char *sysfs_base, const char *dev_addr,
        int *vfio_dev_fd, struct vfio_device_info *device_info);
 
int rte_vfio_release_device(const char *sysfs_base, const char *dev_addr, int fd);
 
int rte_vfio_enable(const char *modname);
 
int rte_vfio_is_enabled(const char *modname);
 
int rte_vfio_noiommu_is_enabled(void);
 
int
rte_vfio_clear_group(int vfio_group_fd);
 
int
rte_vfio_get_group_num(const char *sysfs_base,
              const char *dev_addr, int *iommu_group_num);
 
__rte_experimental
int
rte_vfio_get_device_info(const char *sysfs_base, const char *dev_addr,
        int *vfio_dev_fd, struct vfio_device_info *device_info);
 
int
rte_vfio_get_container_fd(void);
 
int
rte_vfio_get_group_fd(int iommu_group_num);
 
int
rte_vfio_container_create(void);
 
int
rte_vfio_container_destroy(int container_fd);
 
int
rte_vfio_container_group_bind(int container_fd, int iommu_group_num);
 
int
rte_vfio_container_group_unbind(int container_fd, int iommu_group_num);
 
int
rte_vfio_container_dma_map(int container_fd, uint64_t vaddr,
        uint64_t iova, uint64_t len);
 
int
rte_vfio_container_dma_unmap(int container_fd, uint64_t vaddr,
        uint64_t iova, uint64_t len);
 
#ifdef __cplusplus
}
#endif
 
#endif /* _RTE_VFIO_H_ */