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qdev/compat: compat property infrastructure.

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This add support for switching devices into a compatibility mode
using device properties.  Machine types can have a list of properties
for specific devices attached to allow the easy creation of machine
types compatible to older qemu versions.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2009-07-15 13:48:21 +02:00 • committed by Anthony Liguori
parent 81ebb98b24
commit b6b6114460
5 changed files with 41 additions and 0 deletions
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23
hw/qdev-properties.c
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@ -244,3 +244,26 @@ void qdev_prop_set_defaults(DeviceState *dev, Property *props)
}
}
static CompatProperty *compat_props;
void qdev_prop_register_compat(CompatProperty *props)
{
compat_props = props;
}
void qdev_prop_set_compat(DeviceState *dev)
{
CompatProperty *prop;
if (!compat_props) {
return;
}
for (prop = compat_props; prop->driver != NULL; prop++) {
if (strcmp(dev->info->name, prop->driver) != 0) {
continue;
}
if (qdev_prop_parse(dev, prop->property, prop->value) != 0) {
abort();
}
}
}