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qbus: Make child devices links

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Make qbus children show up as link<> properties.  There is no stable
addressing for qbus children so we use an unstable naming convention.

This is okay in QOM though because the composition name is expected to
be what's stable.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Anthony Liguori 2011-12-23 15:34:39 -06:00 • committed by Andreas Färber
parent f968fc6892
commit 0866aca1de
15 changed files with 159 additions and 83 deletions
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14
hw/ssi.c
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@ -30,10 +30,11 @@ static int ssi_slave_init(DeviceState *dev)
SSISlave *s = SSI_SLAVE(dev);
SSISlaveClass *ssc = SSI_SLAVE_GET_CLASS(s);
SSIBus *bus;
BusChild *kid;
bus = FROM_QBUS(SSIBus, qdev_get_parent_bus(dev));
if (QTAILQ_FIRST(&bus->qbus.children) != dev
|| QTAILQ_NEXT(dev, sibling) != NULL) {
kid = QTAILQ_FIRST(&bus->qbus.children);
if (kid->child != dev || QTAILQ_NEXT(kid, sibling) != NULL) {
hw_error("Too many devices on SSI bus");
}
@ -72,14 +73,15 @@ SSIBus *ssi_create_bus(DeviceState *parent, const char *name)
uint32_t ssi_transfer(SSIBus *bus, uint32_t val)
{
DeviceState *dev;
BusChild *kid;
SSISlave *slave;
SSISlaveClass *ssc;
dev = QTAILQ_FIRST(&bus->qbus.children);
if (!dev) {
kid = QTAILQ_FIRST(&bus->qbus.children);
if (!kid) {
return 0;
}
slave = SSI_SLAVE(dev);
slave = SSI_SLAVE(kid->child);
ssc = SSI_SLAVE_GET_CLASS(slave);
return ssc->transfer(slave, val);
}