diff options
| author | Marcel Apfelbaum | 2015-11-10 12:41:29 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin | 2015-11-12 15:23:16 +0100 |
| commit | 1811e64c35fe1d9bce77952937a16c001dc08465 (patch) | |
| tree | 633b6458d78849640385ef4e605f9b4794878e23 /hw | |
| parent | vhost: send SET_VRING_ENABLE at start/stop (diff) | |
| download | qemu-1811e64c35fe1d9bce77952937a16c001dc08465.tar.gz qemu-1811e64c35fe1d9bce77952937a16c001dc08465.tar.xz qemu-1811e64c35fe1d9bce77952937a16c001dc08465.zip | |
hw/virtio: Add PCIe capability to virtio devices
The virtio devices are converted to PCI-Express
if they are plugged into a PCI-Express bus and
the 'modern' protocol is enabled.
Devices plugged directly into the Root Complex as
Integrated Endpoints remain PCI.
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/virtio/virtio-pci.c | 22 | ||||
| -rw-r--r-- | hw/virtio/virtio-pci.h | 2 |
2 files changed, 24 insertions, 0 deletions
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 52a9e338a2..dd485629da 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1814,6 +1814,26 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp) address_space_init(&proxy->modern_as, &proxy->modern_cfg, "virtio-pci-cfg-as"); + if (!(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_PCIE) + && !(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_MODERN) + && pci_bus_is_express(pci_dev->bus) + && !pci_bus_is_root(pci_dev->bus)) { + int pos; + + pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS; + pos = pcie_endpoint_cap_init(pci_dev, 0); + assert(pos > 0); + + pos = pci_add_capability(pci_dev, PCI_CAP_ID_PM, 0, PCI_PM_SIZEOF); + assert(pos > 0); + + /* + * Indicates that this function complies with revision 1.2 of the + * PCI Power Management Interface Specification. + */ + pci_set_word(pci_dev->config + pos + PCI_PM_PMC, 0x3); + } + virtio_pci_bus_new(&proxy->bus, sizeof(proxy->bus), proxy); if (k->realize) { k->realize(proxy, errp); @@ -1854,6 +1874,8 @@ static Property virtio_pci_properties[] = { VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT, true), DEFINE_PROP_BIT("modern-pio-notify", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT, false), + DEFINE_PROP_BIT("x-disable-pcie", VirtIOPCIProxy, flags, + VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT, false), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h index 460c3c9ce0..ffb74bb908 100644 --- a/hw/virtio/virtio-pci.h +++ b/hw/virtio/virtio-pci.h @@ -72,8 +72,10 @@ typedef struct VirtioBusClass VirtioPCIBusClass; /* virtio version flags */ #define VIRTIO_PCI_FLAG_DISABLE_LEGACY_BIT 2 #define VIRTIO_PCI_FLAG_DISABLE_MODERN_BIT 3 +#define VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT 4 #define VIRTIO_PCI_FLAG_DISABLE_LEGACY (1 << VIRTIO_PCI_FLAG_DISABLE_LEGACY_BIT) #define VIRTIO_PCI_FLAG_DISABLE_MODERN (1 << VIRTIO_PCI_FLAG_DISABLE_MODERN_BIT) +#define VIRTIO_PCI_FLAG_DISABLE_PCIE (1 << VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT) /* migrate extra state */ #define VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT 4 |