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| author | Eugenio Pérez <eperezma@redhat.com> | 2023-06-09 11:21:26 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-09-03 18:10:22 -0400 |
| commit | b63e5c70c39349ea5b9e7dbb604551902fc753fc (patch) | |
| tree | 60105d6153280fe4dfa5ce68157b3b40a2681ddb /include/linux/vdpa.h | |
| parent | 9f09fd6171fe8badef7875ab1642e67360bc5483 (diff) | |
| download | linux-stable-b63e5c70c39349ea5b9e7dbb604551902fc753fc.tar.gz linux-stable-b63e5c70c39349ea5b9e7dbb604551902fc753fc.tar.bz2 linux-stable-b63e5c70c39349ea5b9e7dbb604551902fc753fc.zip | |
vdpa: add get_backend_features vdpa operation
This operation allow vdpa parent to expose its own backend feature bits.
Next patches introduce a feature not compatible with all parent drivers:
the ability to enable vq after driver_ok. Each parent must declare if
it allows it or not.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230609092127.170673-4-eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/linux/vdpa.h')
| -rw-r--r-- | include/linux/vdpa.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index db1b0eaef4eb..0e652026b776 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -208,6 +208,9 @@ struct vdpa_map_file { * @vdev: vdpa device * Returns the virtio features support by the * device + * @get_backend_features: Get parent-specific backend features (optional) + * Returns the vdpa features supported by the + * device. * @set_driver_features: Set virtio features supported by the driver * @vdev: vdpa device * @features: feature support by the driver @@ -358,6 +361,7 @@ struct vdpa_config_ops { u32 (*get_vq_align)(struct vdpa_device *vdev); u32 (*get_vq_group)(struct vdpa_device *vdev, u16 idx); u64 (*get_device_features)(struct vdpa_device *vdev); + u64 (*get_backend_features)(const struct vdpa_device *vdev); int (*set_driver_features)(struct vdpa_device *vdev, u64 features); u64 (*get_driver_features)(struct vdpa_device *vdev); void (*set_config_cb)(struct vdpa_device *vdev, |