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virtio-s390-bus: add virtio-s390-bus.
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This add the virtio-s390-bus which extends virtio-bus. So one VirtIODevice can
be connected on this bus.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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konrad-fred authored and Anthony Liguori committed Jan 21, 2013
1 parent 085bccb commit ea35d4f
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Showing 2 changed files with 46 additions and 0 deletions.
29 changes: 29 additions & 0 deletions hw/s390-virtio-bus.c
Expand Up @@ -32,6 +32,7 @@
#include "sysemu/kvm.h"

#include "hw/s390-virtio-bus.h"
#include "hw/virtio-bus.h"

/* #define DEBUG_S390 */

Expand Down Expand Up @@ -569,8 +570,36 @@ static const TypeInfo s390_virtio_bridge_info = {
.class_init = s390_virtio_bridge_class_init,
};

/* virtio-s390-bus */

void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev)
{
DeviceState *qdev = DEVICE(dev);
BusState *qbus;
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_S390_BUS, qdev, NULL);
qbus = BUS(bus);
qbus->allow_hotplug = 0;
}

static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
{
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
BusClass *bus_class = BUS_CLASS(klass);
bus_class->max_dev = 1;
k->notify = virtio_s390_notify;
k->get_features = virtio_s390_get_features;
}

static const TypeInfo virtio_s390_bus_info = {
.name = TYPE_VIRTIO_S390_BUS,
.parent = TYPE_VIRTIO_BUS,
.instance_size = sizeof(VirtioS390BusState),
.class_init = virtio_s390_bus_class_init,
};

static void s390_virtio_register_types(void)
{
type_register_static(&virtio_s390_bus_info);
type_register_static(&s390_virtio_bus_info);
type_register_static(&virtio_s390_device_info);
type_register_static(&s390_virtio_serial);
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17 changes: 17 additions & 0 deletions hw/s390-virtio-bus.h
Expand Up @@ -24,6 +24,7 @@
#include "virtio-rng.h"
#include "virtio-serial.h"
#include "virtio-scsi.h"
#include "virtio-bus.h"

#define VIRTIO_DEV_OFFS_TYPE 0 /* 8 bits */
#define VIRTIO_DEV_OFFS_NUM_VQ 1 /* 8 bits */
Expand Down Expand Up @@ -59,8 +60,24 @@
#define S390_VIRTIO_BUS(obj) \
OBJECT_CHECK(VirtIOS390Bus, (obj), TYPE_S390_VIRTIO_BUS)

/* virtio-s390-bus */

typedef struct VirtioBusState VirtioS390BusState;
typedef struct VirtioBusClass VirtioS390BusClass;

#define TYPE_VIRTIO_S390_BUS "virtio-s390-bus"
#define VIRTIO_S390_BUS(obj) \
OBJECT_CHECK(VirtioS390BusState, (obj), TYPE_VIRTIO_S390_BUS)
#define VIRTIO_S390_BUS_GET_CLASS(obj) \
OBJECT_GET_CLASS(VirtioS390BusClass, obj, TYPE_VIRTIO_S390_BUS)
#define VIRTIO_S390_BUS_CLASS(klass) \
OBJECT_CLASS_CHECK(VirtioS390BusClass, klass, TYPE_VIRTIO_S390_BUS)


typedef struct VirtIOS390Device VirtIOS390Device;

void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev);

typedef struct VirtIOS390DeviceClass {
DeviceClass qdev;
int (*init)(VirtIOS390Device *dev);
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