diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2022-11-29 23:31:52 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-12-02 18:52:03 +0300 |
| commit | 4741f2e941298ad7553b65e66624435e14793391 (patch) | |
| tree | 40c2f75ea6ee652e82fc6cc95399b59a06e304f5 /drivers/vfio/vfio.h | |
| parent | a4d1f91db5021c57e14721ac090616c90386ac70 (diff) | |
| download | linux-4741f2e941298ad7553b65e66624435e14793391.tar.xz | |
vfio-iommufd: Support iommufd for emulated VFIO devices
Emulated VFIO devices are calling vfio_register_emulated_iommu_dev() and
consist of all the mdev drivers.
Like the physical drivers, support for iommufd is provided by the driver
supplying the correct standard ops. Provide ops from the core that
duplicate what vfio_register_emulated_iommu_dev() does.
Emulated drivers are where it is more likely to see variation in the
iommfd support ops. For instance IDXD will probably need to setup both a
iommfd_device context linked to a PASID and an iommufd_access context to
support all their mdev operations.
Link: https://lore.kernel.org/r/7-v4-42cd2eb0e3eb+335a-vfio_iommufd_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Yi Liu <yi.l.liu@intel.com>
Tested-by: Lixiao Yang <lixiao.yang@intel.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Tested-by: Yu He <yu.he@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/vfio/vfio.h')
| -rw-r--r-- | drivers/vfio/vfio.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h index 9766f70a12c5..b1ef84249637 100644 --- a/drivers/vfio/vfio.h +++ b/drivers/vfio/vfio.h @@ -111,8 +111,6 @@ struct vfio_iommu_driver { int vfio_register_iommu_driver(const struct vfio_iommu_driver_ops *ops); void vfio_unregister_iommu_driver(const struct vfio_iommu_driver_ops *ops); -bool vfio_assert_device_open(struct vfio_device *device); - struct vfio_container *vfio_container_from_file(struct file *filep); int vfio_group_use_container(struct vfio_group *group); void vfio_group_unuse_container(struct vfio_group *group); @@ -121,6 +119,14 @@ int vfio_container_attach_group(struct vfio_container *container, void vfio_group_detach_container(struct vfio_group *group); void vfio_device_container_register(struct vfio_device *device); void vfio_device_container_unregister(struct vfio_device *device); +int vfio_container_pin_pages(struct vfio_container *container, + struct iommu_group *iommu_group, dma_addr_t iova, + int npage, int prot, struct page **pages); +void vfio_container_unpin_pages(struct vfio_container *container, + dma_addr_t iova, int npage); +int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova, + void *data, size_t len, bool write); + int __init vfio_container_init(void); void vfio_container_cleanup(void); |