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virtio-pci: implement queue_enabled method 

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>
Message-Id: <20200701145538.22333-5-lulu@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Jason Wang 2020-07-01 22:55:28 +08:00 committed by Michael S. Tsirkin
parent b2a5f62a22
commit f19bcdfedd
1 changed files with 13 additions and 0 deletions
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13
hw/virtio/virtio-pci.c
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@ -1107,6 +1107,18 @@ 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_enabled(vdev, n);
}
static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
struct virtio_pci_cap *cap)
{
@ -2064,6 +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 = {