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virtio-pci-bus: introduce virtio-pci-bus. 

Introduce virtio-pci-bus, which extends virtio-bus. It is used with virtio-pci
transport device.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
KONRAD Frederic 2013-01-15 00:08:03 +01:00 committed by Anthony Liguori
parent 8e05db9234
commit 0a2acf5eb3
2 changed files with 52 additions and 0 deletions
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37
hw/virtio-pci.c
View File

@ -31,6 +31,7 @@
#include "sysemu/blockdev.h" #include "sysemu/blockdev.h"
#include "virtio-pci.h" #include "virtio-pci.h"
#include "qemu/range.h" #include "qemu/range.h"
#include "virtio-bus.h"
/* from Linux's linux/virtio_pci.h */ /* from Linux's linux/virtio_pci.h */
@ -1311,6 +1312,41 @@ static const TypeInfo virtio_scsi_info = {
.class_init = virtio_scsi_class_init, .class_init = virtio_scsi_class_init,
}; };
/* virtio-pci-bus */
void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
{
DeviceState *qdev = DEVICE(dev);
BusState *qbus;
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_PCI_BUS, qdev, NULL);
qbus = BUS(bus);
qbus->allow_hotplug = 0;
}
static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
{
BusClass *bus_class = BUS_CLASS(klass);
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
bus_class->max_dev = 1;
k->notify = virtio_pci_notify;
k->save_config = virtio_pci_save_config;
k->load_config = virtio_pci_load_config;
k->save_queue = virtio_pci_save_queue;
k->load_queue = virtio_pci_load_queue;
k->get_features = virtio_pci_get_features;
k->query_guest_notifiers = virtio_pci_query_guest_notifiers;
k->set_host_notifier = virtio_pci_set_host_notifier;
k->set_guest_notifiers = virtio_pci_set_guest_notifiers;
k->vmstate_change = virtio_pci_vmstate_change;
}
static const TypeInfo virtio_pci_bus_info = {
.name = TYPE_VIRTIO_PCI_BUS,
.parent = TYPE_VIRTIO_BUS,
.instance_size = sizeof(VirtioPCIBusState),
.class_init = virtio_pci_bus_class_init,
};
static void virtio_pci_register_types(void) static void virtio_pci_register_types(void)
{ {
type_register_static(&virtio_blk_info); type_register_static(&virtio_blk_info);
@ -1319,6 +1355,7 @@ static void virtio_pci_register_types(void)
type_register_static(&virtio_balloon_info); type_register_static(&virtio_balloon_info);
type_register_static(&virtio_scsi_info); type_register_static(&virtio_scsi_info);
type_register_static(&virtio_rng_info); type_register_static(&virtio_rng_info);
type_register_static(&virtio_pci_bus_info);
} }
type_init(virtio_pci_register_types) type_init(virtio_pci_register_types)

15
hw/virtio-pci.h
View File

@ -21,6 +21,20 @@
#include "virtio-rng.h" #include "virtio-rng.h"
#include "virtio-serial.h" #include "virtio-serial.h"
#include "virtio-scsi.h" #include "virtio-scsi.h"
#include "virtio-bus.h"
/* virtio-pci-bus */
typedef struct VirtioBusState VirtioPCIBusState;
typedef struct VirtioBusClass VirtioPCIBusClass;
#define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
#define VIRTIO_PCI_BUS(obj) \
OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)
#define VIRTIO_PCI_BUS_GET_CLASS(obj) \
OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)
#define VIRTIO_PCI_BUS_CLASS(klass) \
OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)
/* Performance improves when virtqueue kick processing is decoupled from the /* Performance improves when virtqueue kick processing is decoupled from the
* vcpu thread using ioeventfd for some devices. */ * vcpu thread using ioeventfd for some devices. */
@ -58,6 +72,7 @@ typedef struct {
void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev); void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
void virtio_pci_reset(DeviceState *d); void virtio_pci_reset(DeviceState *d);
void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);
/* Virtio ABI version, if we increment this, we break the guest driver. */ /* Virtio ABI version, if we increment this, we break the guest driver. */
#define VIRTIO_PCI_ABI_VERSION 0 #define VIRTIO_PCI_ABI_VERSION 0