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vdpa: Add set/get_vq_affinity callbacks in vdpa_config_ops
This introduces set/get_vq_affinity callbacks in vdpa_config_ops to support virtqueue affinity management for vdpa device drivers. Signed-off-by: Xie Yongji <xieyongji@bytedance.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20230323053043.35-3-xieyongji@bytedance.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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2 changed files with 41 additions and 0 deletions
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@ -337,6 +337,32 @@ static const char *virtio_vdpa_bus_name(struct virtio_device *vdev)
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return dev_name(&vdpa->dev);
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}
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static int virtio_vdpa_set_vq_affinity(struct virtqueue *vq,
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const struct cpumask *cpu_mask)
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{
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struct virtio_vdpa_device *vd_dev = to_virtio_vdpa_device(vq->vdev);
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struct vdpa_device *vdpa = vd_dev->vdpa;
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const struct vdpa_config_ops *ops = vdpa->config;
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unsigned int index = vq->index;
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if (ops->set_vq_affinity)
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return ops->set_vq_affinity(vdpa, index, cpu_mask);
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return 0;
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}
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static const struct cpumask *
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virtio_vdpa_get_vq_affinity(struct virtio_device *vdev, int index)
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{
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struct vdpa_device *vdpa = vd_get_vdpa(vdev);
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const struct vdpa_config_ops *ops = vdpa->config;
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if (ops->get_vq_affinity)
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return ops->get_vq_affinity(vdpa, index);
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return NULL;
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}
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static const struct virtio_config_ops virtio_vdpa_config_ops = {
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.get = virtio_vdpa_get,
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.set = virtio_vdpa_set,
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@ -349,6 +375,8 @@ static const struct virtio_config_ops virtio_vdpa_config_ops = {
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.get_features = virtio_vdpa_get_features,
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.finalize_features = virtio_vdpa_finalize_features,
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.bus_name = virtio_vdpa_bus_name,
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.set_vq_affinity = virtio_vdpa_set_vq_affinity,
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.get_vq_affinity = virtio_vdpa_get_vq_affinity,
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};
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static void virtio_vdpa_release_dev(struct device *_d)
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@ -250,6 +250,15 @@ struct vdpa_map_file {
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* @vdev: vdpa device
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* Returns the iova range supported by
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* the device.
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* @set_vq_affinity: Set the affinity of virtqueue (optional)
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* @vdev: vdpa device
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* @idx: virtqueue index
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* @cpu_mask: the affinity mask
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* Returns integer: success (0) or error (< 0)
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* @get_vq_affinity: Get the affinity of virtqueue (optional)
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* @vdev: vdpa device
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* @idx: virtqueue index
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* Returns the affinity mask
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* @set_group_asid: Set address space identifier for a
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* virtqueue group (optional)
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* @vdev: vdpa device
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@ -340,6 +349,10 @@ struct vdpa_config_ops {
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const void *buf, unsigned int len);
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u32 (*get_generation)(struct vdpa_device *vdev);
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struct vdpa_iova_range (*get_iova_range)(struct vdpa_device *vdev);
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int (*set_vq_affinity)(struct vdpa_device *vdev, u16 idx,
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const struct cpumask *cpu_mask);
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const struct cpumask *(*get_vq_affinity)(struct vdpa_device *vdev,
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u16 idx);
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/* DMA ops */
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int (*set_map)(struct vdpa_device *vdev, unsigned int asid,
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