Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 6 Nov 2023 16:52:25 +0800 | Subject | Re: [RFC v1 4/8] vdpa: Add new vdpa_config_ops to support iommufd | From | Yi Liu <> |
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On 2023/11/4 01:16, Cindy Lu wrote: > Add 4 new vdpa_config_ops function to support iommufd > > Signed-off-by: Cindy Lu <lulu@redhat.com> > --- > include/linux/vdpa.h | 38 +++++++++++++++++++++++++++++++++++++- > 1 file changed, 37 insertions(+), 1 deletion(-) > > diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h > index 0e652026b776..233d80f9d910 100644 > --- a/include/linux/vdpa.h > +++ b/include/linux/vdpa.h > @@ -5,6 +5,7 @@ > #include <linux/kernel.h> > #include <linux/device.h> > #include <linux/interrupt.h> > +#include <linux/iommufd.h> > #include <linux/vhost_iotlb.h> > #include <linux/virtio_net.h> > #include <linux/if_ether.h> > @@ -97,6 +98,12 @@ struct vdpa_device { > struct vdpa_mgmt_dev *mdev; > unsigned int ngroups; > unsigned int nas; > + struct iommufd_access *iommufd_access; > + struct iommufd_device *iommufd_device; > + struct iommufd_ctx *iommufd_ictx; > + unsigned long *vq_bitmap; > + atomic_t iommufd_users; > + bool iommufd_attached; > }; > > /** > @@ -332,6 +339,17 @@ struct vdpa_map_file { > * @vdev: vdpa device > * @free: Free resources that belongs to vDPA (optional) > * @vdev: vdpa device > + * @bind_iommufd: use vdpa_iommufd_physical_bind for an IOMMU > + * backed device. > + * otherwise use vdpa_iommufd_emulated_bind > + * @unbind_iommufd: use vdpa_iommufd_physical_unbind for an IOMMU > + * backed device. > + * otherwise, use vdpa_iommufd_emulated_unbind > + * @attach_ioas: use vdpa_iommufd_physical_attach_ioas for an > + * IOMMU backed device. > + * @detach_ioas: Opposite of attach_ioas > + * @free: Free resources that belongs to vDPA (optional) > + * @vdev: vdpa device
duplicated kdoc.
> */ > struct vdpa_config_ops { > /* Virtqueue ops */ > @@ -402,6 +420,13 @@ struct vdpa_config_ops { > > /* Free device resources */ > void (*free)(struct vdpa_device *vdev); > + /* IOMMUFD ops */ > + int (*bind_iommufd)(struct vdpa_device *vdev, struct iommufd_ctx *ictx, > + u32 *out_device_id); > + void (*unbind_iommufd)(struct vdpa_device *vdev); > + int (*attach_ioas)(struct vdpa_device *vdev, u32 *pt_id); > + int (*detach_ioas)(struct vdpa_device *vdev); > + > }; > > struct vdpa_device *__vdpa_alloc_device(struct device *parent, > @@ -570,4 +595,15 @@ struct vdpa_mgmt_dev { > int vdpa_mgmtdev_register(struct vdpa_mgmt_dev *mdev); > void vdpa_mgmtdev_unregister(struct vdpa_mgmt_dev *mdev); > > -#endif /* _LINUX_VDPA_H */ > +int vdpa_iommufd_physical_bind(struct vdpa_device *vdpa, > + struct iommufd_ctx *ictx, u32 *out_device_id); > +void vdpa_iommufd_physical_unbind(struct vdpa_device *vdpa); > +int vdpa_iommufd_physical_attach_ioas(struct vdpa_device *vdpa, u32 *pt_id); > +int vdpa_iommufd_physical_detach_ioas(struct vdpa_device *vdpa); > +int vdpa_iommufd_emulated_bind(struct vdpa_device *vdpa, > + struct iommufd_ctx *ictx, u32 *out_device_id); > +void vdpa_iommufd_emulated_unbind(struct vdpa_device *vdpa); > +int vdpa_iommufd_emulated_attach_ioas(struct vdpa_device *vdpa, u32 *pt_id); > +int vdpa_iommufd_emulated_detach_ioas(struct vdpa_device *vdpa); > + > +#endif
-- Regards, Yi Liu
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