diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2022-11-29 16:31:52 -0400 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-12-02 11:52:03 -0400 |
| commit | 4741f2e941298ad7553b65e66624435e14793391 (patch) | |
| tree | 40c2f75ea6ee652e82fc6cc95399b59a06e304f5 /include/linux/vfio.h | |
| parent | a4d1f91db5021c57e14721ac090616c90386ac70 (diff) | |
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 'include/linux/vfio.h')
| -rw-r--r-- | include/linux/vfio.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/vfio.h b/include/linux/vfio.h index a7fc4d747dc2..d5f84f98c0fa 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -19,6 +19,7 @@ struct kvm; struct iommufd_ctx; struct iommufd_device; +struct iommufd_access; /* * VFIO devices can be placed in a set, this allows all devices to share this @@ -56,8 +57,10 @@ struct vfio_device { struct completion comp; struct list_head group_next; struct list_head iommu_entry; + struct iommufd_access *iommufd_access; #if IS_ENABLED(CONFIG_IOMMUFD) struct iommufd_device *iommufd_device; + struct iommufd_ctx *iommufd_ictx; bool iommufd_attached; #endif }; @@ -111,6 +114,10 @@ int vfio_iommufd_physical_bind(struct vfio_device *vdev, struct iommufd_ctx *ictx, u32 *out_device_id); void vfio_iommufd_physical_unbind(struct vfio_device *vdev); int vfio_iommufd_physical_attach_ioas(struct vfio_device *vdev, u32 *pt_id); +int vfio_iommufd_emulated_bind(struct vfio_device *vdev, + struct iommufd_ctx *ictx, u32 *out_device_id); +void vfio_iommufd_emulated_unbind(struct vfio_device *vdev); +int vfio_iommufd_emulated_attach_ioas(struct vfio_device *vdev, u32 *pt_id); #else #define vfio_iommufd_physical_bind \ ((int (*)(struct vfio_device *vdev, struct iommufd_ctx *ictx, \ @@ -119,6 +126,13 @@ int vfio_iommufd_physical_attach_ioas(struct vfio_device *vdev, u32 *pt_id); ((void (*)(struct vfio_device *vdev)) NULL) #define vfio_iommufd_physical_attach_ioas \ ((int (*)(struct vfio_device *vdev, u32 *pt_id)) NULL) +#define vfio_iommufd_emulated_bind \ + ((int (*)(struct vfio_device *vdev, struct iommufd_ctx *ictx, \ + u32 *out_device_id)) NULL) +#define vfio_iommufd_emulated_unbind \ + ((void (*)(struct vfio_device *vdev)) NULL) +#define vfio_iommufd_emulated_attach_ioas \ + ((int (*)(struct vfio_device *vdev, u32 *pt_id)) NULL) #endif /** |