1 files changed, 77 insertions, 0 deletions
diff --git a/hw/core/resetcontainer.c b/hw/core/resetcontainer.c
new file mode 100644
index 0000000000..e4ece68e83
--- /dev/null
+++ b/hw/core/resetcontainer.c
@@ -0,0 +1,77 @@
+/*
+ * Reset container
+ *
+ * Copyright (c) 2024 Linaro, Ltd
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+/*
+ * The "reset container" is an object which implements the Resettable
+ * interface. It contains a list of arbitrary other objects which also
+ * implement Resettable. Resetting the reset container resets all the
+ * objects in it.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/resettable.h"
+#include "hw/core/resetcontainer.h"
+
+struct ResettableContainer {
+    Object parent;
+    ResettableState reset_state;
+    GPtrArray *children;
+};
+
+OBJECT_DEFINE_SIMPLE_TYPE_WITH_INTERFACES(ResettableContainer, resettable_container, RESETTABLE_CONTAINER, OBJECT, { TYPE_RESETTABLE_INTERFACE }, { })
+
+void resettable_container_add(ResettableContainer *rc, Object *obj)
+{
+    INTERFACE_CHECK(void, obj, TYPE_RESETTABLE_INTERFACE);
+    g_ptr_array_add(rc->children, obj);
+}
+
+void resettable_container_remove(ResettableContainer *rc, Object *obj)
+{
+    g_ptr_array_remove(rc->children, obj);
+}
+
+static ResettableState *resettable_container_get_state(Object *obj)
+{
+    ResettableContainer *rc = RESETTABLE_CONTAINER(obj);
+    return &rc->reset_state;
+}
+
+static void resettable_container_child_foreach(Object *obj,
+                                               ResettableChildCallback cb,
+                                               void *opaque, ResetType type)
+{
+    ResettableContainer *rc = RESETTABLE_CONTAINER(obj);
+    unsigned int len = rc->children->len;
+
+    for (unsigned int i = 0; i < len; i++) {
+        cb(g_ptr_array_index(rc->children, i), opaque, type);
+        /* Detect callbacks trying to unregister themselves */
+        assert(len == rc->children->len);
+    }
+}
+
+static void resettable_container_init(Object *obj)
+{
+    ResettableContainer *rc = RESETTABLE_CONTAINER(obj);
+
+    rc->children = g_ptr_array_new();
+}
+
+static void resettable_container_finalize(Object *obj)
+{
+}
+
+static void resettable_container_class_init(ObjectClass *klass, void *data)
+{
+    ResettableClass *rc = RESETTABLE_CLASS(klass);
+
+    rc->get_state = resettable_container_get_state;
+    rc->child_foreach = resettable_container_child_foreach;
+}