1 /*
2 * Reset container
3 *
4 * Copyright (c) 2024 Linaro, Ltd
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
8 */
9
10 /*
11 * The "reset container" is an object which implements the Resettable
12 * interface. It contains a list of arbitrary other objects which also
13 * implement Resettable. Resetting the reset container resets all the
14 * objects in it.
15 */
16
17 #include "qemu/osdep.h"
18 #include "hw/resettable.h"
19 #include "hw/core/resetcontainer.h"
20
21 struct ResettableContainer {
22 Object parent;
23 ResettableState reset_state;
24 GPtrArray *children;
25 };
26
27 OBJECT_DEFINE_SIMPLE_TYPE_WITH_INTERFACES(ResettableContainer, resettable_container, RESETTABLE_CONTAINER, OBJECT, { TYPE_RESETTABLE_INTERFACE }, { })
28
resettable_container_add(ResettableContainer * rc,Object * obj)29 void resettable_container_add(ResettableContainer *rc, Object *obj)
30 {
31 INTERFACE_CHECK(void, obj, TYPE_RESETTABLE_INTERFACE);
32 g_ptr_array_add(rc->children, obj);
33 }
34
resettable_container_remove(ResettableContainer * rc,Object * obj)35 void resettable_container_remove(ResettableContainer *rc, Object *obj)
36 {
37 g_ptr_array_remove(rc->children, obj);
38 }
39
resettable_container_get_state(Object * obj)40 static ResettableState *resettable_container_get_state(Object *obj)
41 {
42 ResettableContainer *rc = RESETTABLE_CONTAINER(obj);
43 return &rc->reset_state;
44 }
45
resettable_container_child_foreach(Object * obj,ResettableChildCallback cb,void * opaque,ResetType type)46 static void resettable_container_child_foreach(Object *obj,
47 ResettableChildCallback cb,
48 void *opaque, ResetType type)
49 {
50 ResettableContainer *rc = RESETTABLE_CONTAINER(obj);
51 unsigned int len = rc->children->len;
52
53 for (unsigned int i = 0; i < len; i++) {
54 cb(g_ptr_array_index(rc->children, i), opaque, type);
55 /* Detect callbacks trying to unregister themselves */
56 assert(len == rc->children->len);
57 }
58 }
59
resettable_container_init(Object * obj)60 static void resettable_container_init(Object *obj)
61 {
62 ResettableContainer *rc = RESETTABLE_CONTAINER(obj);
63
64 rc->children = g_ptr_array_new();
65 }
66
resettable_container_finalize(Object * obj)67 static void resettable_container_finalize(Object *obj)
68 {
69 }
70
resettable_container_class_init(ObjectClass * klass,void * data)71 static void resettable_container_class_init(ObjectClass *klass, void *data)
72 {
73 ResettableClass *rc = RESETTABLE_CLASS(klass);
74
75 rc->get_state = resettable_container_get_state;
76 rc->child_foreach = resettable_container_child_foreach;
77 }
78