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qdev/compat: virtio-net-pci 0.10 compatibility.

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Add vectors property, allowing to turn off msi by setting vectors=0.
Add compat property to pc-0.10 disabling msi.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2009-07-15 13:48:25 +02:00 • committed by Anthony Liguori
parent 8ad1251470
commit a1e0fea587
2 changed files with 28 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

4
hw/pc.c
View file

@ -1533,6 +1533,10 @@ static QEMUMachine pc_machine_v0_10 = {
.driver = "virtio-console-pci", .driver = "virtio-console-pci",
.property = "class", .property = "class",
.value = stringify(PCI_CLASS_DISPLAY_OTHER), .value = stringify(PCI_CLASS_DISPLAY_OTHER),
},{
.driver = "virtio-net-pci",
.property = "vectors",
.value = stringify(0),
}, },
{ /* end of list */ } { /* end of list */ }
}, },

21
hw/virtio-pci.c
View file

@ -19,6 +19,7 @@
#include "pci.h" #include "pci.h"
//#include "sysemu.h" //#include "sysemu.h"
#include "msix.h" #include "msix.h"
#include "net.h"
/* from Linux's linux/virtio_pci.h */ /* from Linux's linux/virtio_pci.h */
@ -87,6 +88,7 @@ typedef struct {
VirtIODevice *vdev; VirtIODevice *vdev;
uint32_t addr; uint32_t addr;
uint32_t class_code; uint32_t class_code;
uint32_t nvectors;
} VirtIOPCIProxy; } VirtIOPCIProxy;
/* virtio device */ /* virtio device */
@ -486,11 +488,21 @@ static void virtio_net_init_pci(PCIDevice *pci_dev)
VirtIODevice *vdev; VirtIODevice *vdev;
vdev = virtio_net_init(&pci_dev->qdev); vdev = virtio_net_init(&pci_dev->qdev);
/* set nvectors from property, unless the user specified something
* via -net nic,model=virtio,vectors=n command line option */
if (pci_dev->qdev.nd->nvectors == NIC_NVECTORS_UNSPECIFIED)
if (proxy->nvectors != NIC_NVECTORS_UNSPECIFIED)
vdev->nvectors = proxy->nvectors;
virtio_init_pci(proxy, vdev, virtio_init_pci(proxy, vdev,
PCI_VENDOR_ID_REDHAT_QUMRANET, PCI_VENDOR_ID_REDHAT_QUMRANET,
PCI_DEVICE_ID_VIRTIO_NET, PCI_DEVICE_ID_VIRTIO_NET,
PCI_CLASS_NETWORK_ETHERNET, PCI_CLASS_NETWORK_ETHERNET,
0x00); 0x00);
/* make the actual value visible */
proxy->nvectors = vdev->nvectors;
} }
static void virtio_balloon_init_pci(PCIDevice *pci_dev) static void virtio_balloon_init_pci(PCIDevice *pci_dev)
@ -523,6 +535,15 @@ static PCIDeviceInfo virtio_info[] = {
.qdev.name = "virtio-net-pci", .qdev.name = "virtio-net-pci",
.qdev.size = sizeof(VirtIOPCIProxy), .qdev.size = sizeof(VirtIOPCIProxy),
.init = virtio_net_init_pci, .init = virtio_net_init_pci,
.qdev.props = (Property[]) {
{
.name = "vectors",
.info = &qdev_prop_uint32,
.offset = offsetof(VirtIOPCIProxy, nvectors),
.defval = (uint32_t[]) { NIC_NVECTORS_UNSPECIFIED },
},
{/* end of list */}
},
},{ },{
.qdev.name = "virtio-console-pci", .qdev.name = "virtio-console-pci",
.qdev.size = sizeof(VirtIOPCIProxy), .qdev.size = sizeof(VirtIOPCIProxy),