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authorPaolo Bonzini <pbonzini@redhat.com>2013-09-20 13:31:39 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2013-12-09 21:46:48 +0100
commit06d3dff0723c712a4b109ced4243edf49ef850af (patch)
tree36366deffc0b04b7679668f44c78348e3a61e7ab /hw/virtio/virtio-bus.c
parent0b81c1ef5c677c2a07be5f8bf0dfe2c62ef52115 (diff)
virtio-bus: remove vdev field
The vdev field is complicated to synchronize. Just access the BusState's list of children. Cc: qemu-stable@nongnu.org Acked-by: Andreas Faerber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/virtio/virtio-bus.c')
-rw-r--r--hw/virtio/virtio-bus.c65
1 files changed, 39 insertions, 26 deletions
diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c
index e6b103c991..17dd06e1a1 100644
--- a/hw/virtio/virtio-bus.c
+++ b/hw/virtio/virtio-bus.c
@@ -46,8 +46,6 @@ int virtio_bus_plug_device(VirtIODevice *vdev)
VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(bus);
DPRINTF("%s: plug device.\n", qbus->name);
- bus->vdev = vdev;
-
if (klass->device_plugged != NULL) {
klass->device_plugged(qbus->parent);
}
@@ -58,9 +56,11 @@ int virtio_bus_plug_device(VirtIODevice *vdev)
/* Reset the virtio_bus */
void virtio_bus_reset(VirtioBusState *bus)
{
+ VirtIODevice *vdev = virtio_bus_get_device(bus);
+
DPRINTF("%s: reset device.\n", qbus->name);
- if (bus->vdev != NULL) {
- virtio_reset(bus->vdev);
+ if (vdev != NULL) {
+ virtio_reset(vdev);
}
}
@@ -69,62 +69,71 @@ void virtio_bus_destroy_device(VirtioBusState *bus)
{
BusState *qbus = BUS(bus);
VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(bus);
+ VirtIODevice *vdev = virtio_bus_get_device(bus);
+
DPRINTF("%s: remove device.\n", qbus->name);
- if (bus->vdev != NULL) {
+ if (vdev != NULL) {
if (klass->device_unplug != NULL) {
klass->device_unplug(qbus->parent);
}
- object_unparent(OBJECT(bus->vdev));
- bus->vdev = NULL;
+ object_unparent(OBJECT(vdev));
}
}
/* Get the device id of the plugged device. */
uint16_t virtio_bus_get_vdev_id(VirtioBusState *bus)
{
- assert(bus->vdev != NULL);
- return bus->vdev->device_id;
+ VirtIODevice *vdev = virtio_bus_get_device(bus);
+ assert(vdev != NULL);
+ return vdev->device_id;
}
/* Get the config_len field of the plugged device. */
size_t virtio_bus_get_vdev_config_len(VirtioBusState *bus)
{
- assert(bus->vdev != NULL);
- return bus->vdev->config_len;
+ VirtIODevice *vdev = virtio_bus_get_device(bus);
+ assert(vdev != NULL);
+ return vdev->config_len;
}
/* Get the features of the plugged device. */
uint32_t virtio_bus_get_vdev_features(VirtioBusState *bus,
uint32_t requested_features)
{
+ VirtIODevice *vdev = virtio_bus_get_device(bus);
VirtioDeviceClass *k;
- assert(bus->vdev != NULL);
- k = VIRTIO_DEVICE_GET_CLASS(bus->vdev);
+
+ assert(vdev != NULL);
+ k = VIRTIO_DEVICE_GET_CLASS(vdev);
assert(k->get_features != NULL);
- return k->get_features(bus->vdev, requested_features);
+ return k->get_features(vdev, requested_features);
}
/* Set the features of the plugged device. */
void virtio_bus_set_vdev_features(VirtioBusState *bus,
uint32_t requested_features)
{
+ VirtIODevice *vdev = virtio_bus_get_device(bus);
VirtioDeviceClass *k;
- assert(bus->vdev != NULL);
- k = VIRTIO_DEVICE_GET_CLASS(bus->vdev);
+
+ assert(vdev != NULL);
+ k = VIRTIO_DEVICE_GET_CLASS(vdev);
if (k->set_features != NULL) {
- k->set_features(bus->vdev, requested_features);
+ k->set_features(vdev, requested_features);
}
}
/* Get bad features of the plugged device. */
uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus)
{
+ VirtIODevice *vdev = virtio_bus_get_device(bus);
VirtioDeviceClass *k;
- assert(bus->vdev != NULL);
- k = VIRTIO_DEVICE_GET_CLASS(bus->vdev);
+
+ assert(vdev != NULL);
+ k = VIRTIO_DEVICE_GET_CLASS(vdev);
if (k->bad_features != NULL) {
- return k->bad_features(bus->vdev);
+ return k->bad_features(vdev);
} else {
return 0;
}
@@ -133,22 +142,26 @@ uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus)
/* Get config of the plugged device. */
void virtio_bus_get_vdev_config(VirtioBusState *bus, uint8_t *config)
{
+ VirtIODevice *vdev = virtio_bus_get_device(bus);
VirtioDeviceClass *k;
- assert(bus->vdev != NULL);
- k = VIRTIO_DEVICE_GET_CLASS(bus->vdev);
+
+ assert(vdev != NULL);
+ k = VIRTIO_DEVICE_GET_CLASS(vdev);
if (k->get_config != NULL) {
- k->get_config(bus->vdev, config);
+ k->get_config(vdev, config);
}
}
/* Set config of the plugged device. */
void virtio_bus_set_vdev_config(VirtioBusState *bus, uint8_t *config)
{
+ VirtIODevice *vdev = virtio_bus_get_device(bus);
VirtioDeviceClass *k;
- assert(bus->vdev != NULL);
- k = VIRTIO_DEVICE_GET_CLASS(bus->vdev);
+
+ assert(vdev != NULL);
+ k = VIRTIO_DEVICE_GET_CLASS(vdev);
if (k->set_config != NULL) {
- k->set_config(bus->vdev, config);
+ k->set_config(vdev, config);
}
}