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virtio-rng-pci: Allow setting nvectors, so we can use MSI-X

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Most other virtio-pci devices allow MSI-X, let's have it for rng too.

Signed-off-by: David Daney <david.daney@fungible.com>
Reviewed-by: Marcin Nowakowski <marcin.nowakowski@fungible.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@fungible.com>
Message-Id: <20221014160947.66105-1-philmd@fungible.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
David Daney 2022-10-14 18:09:47 +02:00 committed by Michael S. Tsirkin
parent 93a97dc520
commit 9ea02e8f13
1 changed files with 14 additions and 0 deletions
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14
hw/virtio/virtio-rng-pci.c
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@ -13,6 +13,7 @@
#include "hw/virtio/virtio-pci.h"
#include "hw/virtio/virtio-rng.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "qom/object.h"
@ -31,11 +32,23 @@ struct VirtIORngPCI {
VirtIORNG vdev;
};
static Property virtio_rng_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
DEV_NVECTORS_UNSPECIFIED),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev);
DeviceState *vdev = DEVICE(&vrng->vdev);
if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
vpci_dev->nvectors = 2;
}
if (!qdev_realize(vdev, BUS(&vpci_dev->bus), errp)) {
return;
}
@ -54,6 +67,7 @@ static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
pcidev_k->class_id = PCI_CLASS_OTHERS;
device_class_set_props(dc, virtio_rng_properties);
}
static void virtio_rng_initfn(Object *obj)