1/*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24#include <core/object.h>
25#include <core/client.h>
26#include <core/engine.h>
27
28int
29nvkm_object_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
30{
31	if (likely(object->func->mthd))
32		return object->func->mthd(object, mthd, data, size);
33	return -ENODEV;
34}
35
36int
37nvkm_object_ntfy(struct nvkm_object *object, u32 mthd,
38		 struct nvkm_event **pevent)
39{
40	if (likely(object->func->ntfy))
41		return object->func->ntfy(object, mthd, pevent);
42	return -ENODEV;
43}
44
45int
46nvkm_object_map(struct nvkm_object *object, u64 *addr, u32 *size)
47{
48	if (likely(object->func->map))
49		return object->func->map(object, addr, size);
50	return -ENODEV;
51}
52
53int
54nvkm_object_rd08(struct nvkm_object *object, u64 addr, u8 *data)
55{
56	if (likely(object->func->rd08))
57		return object->func->rd08(object, addr, data);
58	return -ENODEV;
59}
60
61int
62nvkm_object_rd16(struct nvkm_object *object, u64 addr, u16 *data)
63{
64	if (likely(object->func->rd16))
65		return object->func->rd16(object, addr, data);
66	return -ENODEV;
67}
68
69int
70nvkm_object_rd32(struct nvkm_object *object, u64 addr, u32 *data)
71{
72	if (likely(object->func->rd32))
73		return object->func->rd32(object, addr, data);
74	return -ENODEV;
75}
76
77int
78nvkm_object_wr08(struct nvkm_object *object, u64 addr, u8 data)
79{
80	if (likely(object->func->wr08))
81		return object->func->wr08(object, addr, data);
82	return -ENODEV;
83}
84
85int
86nvkm_object_wr16(struct nvkm_object *object, u64 addr, u16 data)
87{
88	if (likely(object->func->wr16))
89		return object->func->wr16(object, addr, data);
90	return -ENODEV;
91}
92
93int
94nvkm_object_wr32(struct nvkm_object *object, u64 addr, u32 data)
95{
96	if (likely(object->func->wr32))
97		return object->func->wr32(object, addr, data);
98	return -ENODEV;
99}
100
101int
102nvkm_object_bind(struct nvkm_object *object, struct nvkm_gpuobj *gpuobj,
103		 int align, struct nvkm_gpuobj **pgpuobj)
104{
105	if (object->func->bind)
106		return object->func->bind(object, gpuobj, align, pgpuobj);
107	return -ENODEV;
108}
109
110int
111nvkm_object_fini(struct nvkm_object *object, bool suspend)
112{
113	const char *action = suspend ? "suspend" : "fini";
114	struct nvkm_object *child;
115	s64 time;
116	int ret;
117
118	nvif_debug(object, "%s children...\n", action);
119	time = ktime_to_us(ktime_get());
120	list_for_each_entry(child, &object->tree, head) {
121		ret = nvkm_object_fini(child, suspend);
122		if (ret && suspend)
123			goto fail_child;
124	}
125
126	nvif_debug(object, "%s running...\n", action);
127	if (object->func->fini) {
128		ret = object->func->fini(object, suspend);
129		if (ret) {
130			nvif_error(object, "%s failed with %d\n", action, ret);
131			if (suspend)
132				goto fail;
133		}
134	}
135
136	time = ktime_to_us(ktime_get()) - time;
137	nvif_debug(object, "%s completed in %lldus\n", action, time);
138	return 0;
139
140fail:
141	if (object->func->init) {
142		int rret = object->func->init(object);
143		if (rret)
144			nvif_fatal(object, "failed to restart, %d\n", rret);
145	}
146fail_child:
147	list_for_each_entry_continue_reverse(child, &object->tree, head) {
148		nvkm_object_init(child);
149	}
150	return ret;
151}
152
153int
154nvkm_object_init(struct nvkm_object *object)
155{
156	struct nvkm_object *child;
157	s64 time;
158	int ret;
159
160	nvif_debug(object, "init running...\n");
161	time = ktime_to_us(ktime_get());
162	if (object->func->init) {
163		ret = object->func->init(object);
164		if (ret)
165			goto fail;
166	}
167
168	nvif_debug(object, "init children...\n");
169	list_for_each_entry(child, &object->tree, head) {
170		ret = nvkm_object_init(child);
171		if (ret)
172			goto fail_child;
173	}
174
175	time = ktime_to_us(ktime_get()) - time;
176	nvif_debug(object, "init completed in %lldus\n", time);
177	return 0;
178
179fail_child:
180	list_for_each_entry_continue_reverse(child, &object->tree, head)
181		nvkm_object_fini(child, false);
182fail:
183	nvif_error(object, "init failed with %d\n", ret);
184	if (object->func->fini)
185		object->func->fini(object, false);
186	return ret;
187}
188
189void *
190nvkm_object_dtor(struct nvkm_object *object)
191{
192	struct nvkm_object *child, *ctemp;
193	void *data = object;
194	s64 time;
195
196	nvif_debug(object, "destroy children...\n");
197	time = ktime_to_us(ktime_get());
198	list_for_each_entry_safe(child, ctemp, &object->tree, head) {
199		nvkm_object_del(&child);
200	}
201
202	nvif_debug(object, "destroy running...\n");
203	if (object->func->dtor)
204		data = object->func->dtor(object);
205	nvkm_engine_unref(&object->engine);
206	time = ktime_to_us(ktime_get()) - time;
207	nvif_debug(object, "destroy completed in %lldus...\n", time);
208	return data;
209}
210
211void
212nvkm_object_del(struct nvkm_object **pobject)
213{
214	struct nvkm_object *object = *pobject;
215	if (object && !WARN_ON(!object->func)) {
216		*pobject = nvkm_object_dtor(object);
217		nvkm_client_remove(object->client, object);
218		list_del(&object->head);
219		kfree(*pobject);
220		*pobject = NULL;
221	}
222}
223
224void
225nvkm_object_ctor(const struct nvkm_object_func *func,
226		 const struct nvkm_oclass *oclass, struct nvkm_object *object)
227{
228	object->func = func;
229	object->client = oclass->client;
230	object->engine = nvkm_engine_ref(oclass->engine);
231	object->oclass = oclass->base.oclass;
232	object->handle = oclass->handle;
233	INIT_LIST_HEAD(&object->head);
234	INIT_LIST_HEAD(&object->tree);
235	RB_CLEAR_NODE(&object->node);
236	WARN_ON(oclass->engine && !object->engine);
237}
238
239int
240nvkm_object_new_(const struct nvkm_object_func *func,
241		 const struct nvkm_oclass *oclass, void *data, u32 size,
242		 struct nvkm_object **pobject)
243{
244	if (size == 0) {
245		if (!(*pobject = kzalloc(sizeof(**pobject), GFP_KERNEL)))
246			return -ENOMEM;
247		nvkm_object_ctor(func, oclass, *pobject);
248		return 0;
249	}
250	return -ENOSYS;
251}
252
253static const struct nvkm_object_func
254nvkm_object_func = {
255};
256
257int
258nvkm_object_new(const struct nvkm_oclass *oclass, void *data, u32 size,
259		struct nvkm_object **pobject)
260{
261	const struct nvkm_object_func *func =
262		oclass->base.func ? oclass->base.func : &nvkm_object_func;
263	return nvkm_object_new_(func, oclass, data, size, pobject);
264}
265