On Sat, May 9, 2020 at 8:02 PM Philippe Mathieu-Daudé <phi...@redhat.com> wrote:
>
> Typo "virtio-pci" in patch subject.
>
Thanks Philippe, I will fix this
> On 5/8/20 6:32 PM, Cindy Lu wrote:
> > From: Jason Wang <jasow...@redhat.com>
> >
> > With version 1, we can detect whether a queue is enabled via
> > queue_enabled.
> >
> > Signed-off-by: Jason Wang <jasow...@redhat.com>
> > ---
> > hw/virtio/virtio-pci.c | 13 +++++++++++++
> > 1 file changed, 13 insertions(+)
> >
> > diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> > index c6b47a9c73..4aaf5d953e 100644
> > --- a/hw/virtio/virtio-pci.c
> > +++ b/hw/virtio/virtio-pci.c
> > @@ -1103,6 +1103,18 @@ static AddressSpace
> > *virtio_pci_get_dma_as(DeviceState *d)
> > return pci_get_address_space(dev);
> > }
> >
> > +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_get_desc_addr(vdev, n) != 0;
> > +}
> > +
> > static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
> > struct virtio_pci_cap *cap)
> > {
> > @@ -2053,6 +2065,7 @@ 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 = {
> >
>
