@@ -1214,3 +1214,21 @@ PropertyInfo qdev_prop_size = {
.set = set_size,
.set_default_value = set_default_value_uint,
};
+
+/* --- object link property --- */
+
+static void create_link_property(Object *obj, Property *prop, Error **errp)
+{
+ Object **child = qdev_get_prop_ptr(DEVICE(obj), prop);
+
+ object_property_add_link(obj, prop->name, prop->link_type,
+ child,
+ qdev_prop_allow_set_link_before_realize,
+ OBJ_PROP_LINK_UNREF_ON_RELEASE,
+ errp);
+}
+
+PropertyInfo qdev_prop_link = {
+ .name = "link",
+ .create = create_link_property,
+};
@@ -233,6 +233,7 @@ struct Property {
int arrayoffset;
PropertyInfo *arrayinfo;
int arrayfieldsize;
+ const char *link_type;
};
struct PropertyInfo {
@@ -30,6 +30,7 @@ extern PropertyInfo qdev_prop_pci_devfn;
extern PropertyInfo qdev_prop_blocksize;
extern PropertyInfo qdev_prop_pci_host_devaddr;
extern PropertyInfo qdev_prop_arraylen;
+extern PropertyInfo qdev_prop_link;
#define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
.name = (_name), \
@@ -117,6 +118,14 @@ extern PropertyInfo qdev_prop_arraylen;
.arrayoffset = offsetof(_state, _arrayfield), \
}
+#define DEFINE_PROP_LINK(_name, _state, _field, _type) {\
+ .name = (_name), \
+ .info = &(qdev_prop_link), \
+ .offset = offsetof(_state, _field) \
+ + type_check(Object *, typeof_field(_state, _field)), \
+ .link_type = _type, \
+ }
+
#define DEFINE_PROP_UINT8(_n, _s, _f, _d) \
DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
#define DEFINE_PROP_UINT16(_n, _s, _f, _d) \
This property can be used to replace the object_property_add_link in device code, to add a link to other objects, which is a common pattern. Signed-off-by: Fam Zheng <famz@redhat.com> --- hw/core/qdev-properties.c | 18 ++++++++++++++++++ include/hw/qdev-core.h | 1 + include/hw/qdev-properties.h | 9 +++++++++ 3 files changed, 28 insertions(+)