Re: [PATCH v1 04/10] virtio-pci: implement queue_enabled method

[Jason Wang]

On 2020/6/22 下午11:37, Cindy Lu wrote:
> From: Jason Wang <jasowang@redhat.com>
>
> With version 1, we can detect whether a queue is enabled via
> queue_enabled.
>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> Signed-off-by: Cindy Lu <lulu@redhat.com>
> ---
>   hw/virtio/virtio-pci.c | 18 ++++++++++++++++++
>   1 file changed, 18 insertions(+)
>
> diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> index 4cb784389c..3918aa9f6c 100644
> --- a/hw/virtio/virtio-pci.c
> +++ b/hw/virtio/virtio-pci.c
> @@ -1107,6 +1107,23 @@ static AddressSpace *virtio_pci_get_dma_as(DeviceState 
> *d)
>       return pci_get_address_space(dev);
>   }
>   
> +static bool  virtio_queue_check_enabled(VirtIODevice *vdev, int n)


One space is sufficient between bool and virtio_queue_check_enabled.


> +{
> +    return  virtio_queue_get_desc_addr(vdev, n) != 0;
> +}
> +
> +static bool virtio_pci_queue_enabled(DeviceState *d, int n)
> +{
> +    VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
> +    VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
> +
> +    if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
> +        return proxy->vqs[vdev->queue_sel].enabled;
> +    }
> +
> +    return  virtio_queue_check_enabled(vdev, n);


Similar issue here.

Thanks


> +}
> +
>   static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
>                                      struct virtio_pci_cap *cap)
>   {
> @@ -2059,6 +2076,7 @@ static void virtio_pci_bus_class_init(ObjectClass *klass, 
> void *data)
>       k->ioeventfd_enabled = virtio_pci_ioeventfd_enabled;
>       k->ioeventfd_assign = virtio_pci_ioeventfd_assign;
>       k->get_dma_as = virtio_pci_get_dma_as;
> +    k->queue_enabled = virtio_pci_queue_enabled;
>   }
>   
>   static const TypeInfo virtio_pci_bus_info = {