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Use the default subsystem vendor ID for virtio devices (Mark McLoughlin)

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A subsystem vendor ID of zero isn't allowed, so we use our
default ID.

Gerd points out that although the PCI subsystem vendor ID is
treated by the guest as the virtio vendor ID:

   /* we use the subsystem vendor/device id as the virtio vendor/device
    * id.  this allows us to use the same PCI vendor/device id for all
    * virtio devices and to identify the particular virtio driver by
    * the subsytem ids */
    vp_dev->vdev.id.vendor = pci_dev->subsystem_vendor;
    vp_dev->vdev.id.device = pci_dev->subsystem_device;

it looks like only the device ID is used right now:

   # grep virtio modules.alias
   alias virtio:d00000001v* virtio_net
   alias virtio:d00000002v* virtio_blk
   alias virtio:d00000003v* virtio_console
   alias virtio:d00000004v* virtio-rng
   alias virtio:d00000005v* virtio_balloon
   alias pci:v00001AF4d*sv*sd*bc*sc*i* virtio_pci
   alias virtio:d00000009v* 9pnet_virtio

so setting the subsystem vendor id to something != zero shouldn't cause
trouble.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6440 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2009-01-26 15:22:57 +00:00
parent 14d50bef67
commit 99b3718ee1
4 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
hw/virtio-balloon.c
View File

@ -174,7 +174,8 @@ void *virtio_balloon_init(PCIBus *bus)
s = (VirtIOBalloon *)virtio_init_pci(bus, "virtio-balloon",
PCI_VENDOR_ID_REDHAT_QUMRANET,
PCI_DEVICE_ID_VIRTIO_BALLOON,
0, VIRTIO_ID_BALLOON,
PCI_VENDOR_ID_REDHAT_QUMRANET,
VIRTIO_ID_BALLOON,
0x05, 0x00, 0x00,
8, sizeof(VirtIOBalloon));
if (s == NULL)

3
hw/virtio-blk.c
View File

@ -303,7 +303,8 @@ void *virtio_blk_init(PCIBus *bus, BlockDriverState *bs)
s = (VirtIOBlock *)virtio_init_pci(bus, "virtio-blk",
PCI_VENDOR_ID_REDHAT_QUMRANET,
PCI_DEVICE_ID_VIRTIO_BLOCK,
0, VIRTIO_ID_BLOCK,
PCI_VENDOR_ID_REDHAT_QUMRANET,
VIRTIO_ID_BLOCK,
0x01, 0x80, 0x00,
sizeof(struct virtio_blk_config), sizeof(VirtIOBlock));
if (!s)

3
hw/virtio-console.c
View File

@ -128,7 +128,8 @@ void *virtio_console_init(PCIBus *bus, CharDriverState *chr)
s = (VirtIOConsole *)virtio_init_pci(bus, "virtio-console",
PCI_VENDOR_ID_REDHAT_QUMRANET,
PCI_DEVICE_ID_VIRTIO_CONSOLE,
0, VIRTIO_ID_CONSOLE,
PCI_VENDOR_ID_REDHAT_QUMRANET,
VIRTIO_ID_CONSOLE,
0x03, 0x80, 0x00,
0, sizeof(VirtIOConsole));
if (s == NULL)

3
hw/virtio-net.c
View File

@ -323,7 +323,8 @@ void virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn)
n = (VirtIONet *)virtio_init_pci(bus, "virtio-net",
PCI_VENDOR_ID_REDHAT_QUMRANET,
PCI_DEVICE_ID_VIRTIO_NET,
0, VIRTIO_ID_NET,
PCI_VENDOR_ID_REDHAT_QUMRANET,
VIRTIO_ID_NET,
0x02, 0x00, 0x00,
sizeof(struct virtio_net_config),
sizeof(VirtIONet));