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[RFC v2 7/9] virito-pci: implement queue_enabled method
From: |
Cindy Lu |
Subject: |
[RFC v2 7/9] virito-pci: implement queue_enabled method |
Date: |
Sat, 9 May 2020 00:32:16 +0800 |
From: Jason Wang <address@hidden>
With version 1, we can detect whether a queue is enabled via
queue_enabled.
Signed-off-by: Jason Wang <address@hidden>
---
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 = {
--
2.21.1
- [RFC v2 5/9] vhost-vdpa: implement vhost-vdpa backend, (continued)
- [RFC v2 6/9] virtio-bus: introduce queue_enabled method, Cindy Lu, 2020/05/08
- [RFC v2 7/9] virito-pci: implement queue_enabled method,
Cindy Lu <=
- [RFC v2 8/9] vhost_net: set vq ready during start if necessary, Cindy Lu, 2020/05/08
- [RFC v2 9/9] vhost: introduce vhost_set_vring_ready method, Cindy Lu, 2020/05/08
- Re: [RFC v2 0/9] vDPA support in qemu, Jason Wang, 2020/05/08