| 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/core/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 | |
| 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 | |
| 35 | void resettable_container_remove(ResettableContainer *rc, Object *obj) |
| 36 | { |
| 37 | g_ptr_array_remove(rc->children, obj); |
| 38 | } |
| 39 | |
| 40 | static ResettableState *resettable_container_get_state(Object *obj) |
| 41 | { |
| 42 | ResettableContainer *rc = RESETTABLE_CONTAINER(obj); |
| 43 | return &rc->reset_state; |
| 44 | } |
| 45 | |
| 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 | |
| 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 | |
| 67 | static void resettable_container_finalize(Object *obj) |
| 68 | { |
| 69 | ResettableContainer *rc = RESETTABLE_CONTAINER(obj); |
| 70 | |
| 71 | g_ptr_array_unref(rc->children); |
| 72 | } |
| 73 | |
| 74 | static void resettable_container_class_init(ObjectClass *klass, |
| 75 | const void *data) |
| 76 | { |
| 77 | ResettableClass *rc = RESETTABLE_CLASS(klass); |
| 78 | |
| 79 | rc->get_state = resettable_container_get_state; |
| 80 | rc->child_foreach = resettable_container_child_foreach; |
| 81 | } |