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Merge remote-tracking branch 'amit/master' into staging

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* amit/master:
  virtio-serial-bus: Unset guest_connected at reset and driver reset
  virtio-serial-bus: fix guest_connected init before driver init
This commit is contained in:
Anthony Liguori 2012-04-26 15:16:24 -05:00
commit d6a6922f3b
1 changed files with 49 additions and 8 deletions
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57
hw/virtio-serial-bus.c
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@ -528,6 +528,53 @@ static void set_config(VirtIODevice *vdev, const uint8_t *config_data)
memcpy(&config, config_data, sizeof(config));
}
static void guest_reset(VirtIOSerial *vser)
{
VirtIOSerialPort *port;
VirtIOSerialPortClass *vsc;
QTAILQ_FOREACH(port, &vser->ports, next) {
vsc = VIRTIO_SERIAL_PORT_GET_CLASS(port);
if (port->guest_connected) {
port->guest_connected = false;
if (vsc->guest_close)
vsc->guest_close(port);
}
}
}
static void set_status(VirtIODevice *vdev, uint8_t status)
{
VirtIOSerial *vser;
VirtIOSerialPort *port;
vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
port = find_port_by_id(vser, 0);
if (port && !use_multiport(port->vser)
&& (status & VIRTIO_CONFIG_S_DRIVER_OK)) {
/*
* Non-multiport guests won't be able to tell us guest
* open/close status. Such guests can only have a port at id
* 0, so set guest_connected for such ports as soon as guest
* is up.
*/
port->guest_connected = true;
}
if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
guest_reset(vser);
}
}
static void vser_reset(VirtIODevice *vdev)
{
VirtIOSerial *vser;
vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
guest_reset(vser);
}
static void virtio_serial_save(QEMUFile *f, void *opaque)
{
VirtIOSerial *s = opaque;
@ -798,14 +845,6 @@ static int virtser_port_qdev_init(DeviceState *qdev)
return ret;
}
if (!use_multiport(port->vser)) {
/*
* Allow writes to guest in this case; we have no way of
* knowing if a guest port is connected.
*/
port->guest_connected = true;
}
port->elem.out_num = 0;
QTAILQ_INSERT_TAIL(&port->vser->ports, port, next);
@ -905,6 +944,8 @@ VirtIODevice *virtio_serial_init(DeviceState *dev, virtio_serial_conf *conf)
vser->vdev.get_features = get_features;
vser->vdev.get_config = get_config;
vser->vdev.set_config = set_config;
vser->vdev.set_status = set_status;
vser->vdev.reset = vser_reset;
vser->qdev = dev;