2 * Copyright 2012 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
24 #include <core/engine.h>
25 #include <core/device.h>
26 #include <core/option.h>
28 #include <subdev/fb.h>
31 nvkm_engine_chsw_load(struct nvkm_engine *engine)
33 if (engine->func->chsw_load)
34 return engine->func->chsw_load(engine);
39 nvkm_engine_unref(struct nvkm_engine **pengine)
41 struct nvkm_engine *engine = *pengine;
43 mutex_lock(&engine->subdev.mutex);
44 if (--engine->usecount == 0)
45 nvkm_subdev_fini(&engine->subdev, false);
46 mutex_unlock(&engine->subdev.mutex);
52 nvkm_engine_ref(struct nvkm_engine *engine)
55 mutex_lock(&engine->subdev.mutex);
56 if (++engine->usecount == 1) {
57 int ret = nvkm_subdev_init(&engine->subdev);
60 mutex_unlock(&engine->subdev.mutex);
64 mutex_unlock(&engine->subdev.mutex);
70 nvkm_engine_tile(struct nvkm_engine *engine, int region)
72 struct nvkm_fb *fb = engine->subdev.device->fb;
73 if (engine->func->tile)
74 engine->func->tile(engine, region, &fb->tile.region[region]);
78 nvkm_engine_intr(struct nvkm_subdev *subdev)
80 struct nvkm_engine *engine = nvkm_engine(subdev);
81 if (engine->func->intr)
82 engine->func->intr(engine);
86 nvkm_engine_fini(struct nvkm_subdev *subdev, bool suspend)
88 struct nvkm_engine *engine = nvkm_engine(subdev);
89 if (engine->func->fini)
90 return engine->func->fini(engine, suspend);
95 nvkm_engine_init(struct nvkm_subdev *subdev)
97 struct nvkm_engine *engine = nvkm_engine(subdev);
98 struct nvkm_fb *fb = subdev->device->fb;
102 if (!engine->usecount) {
103 nvkm_trace(subdev, "init skipped, engine has no users\n");
107 if (engine->func->oneinit && !engine->subdev.oneinit) {
108 nvkm_trace(subdev, "one-time init running...\n");
109 time = ktime_to_us(ktime_get());
110 ret = engine->func->oneinit(engine);
112 nvkm_trace(subdev, "one-time init failed, %d\n", ret);
116 engine->subdev.oneinit = true;
117 time = ktime_to_us(ktime_get()) - time;
118 nvkm_trace(subdev, "one-time init completed in %lldus\n", time);
121 if (engine->func->init)
122 ret = engine->func->init(engine);
124 for (i = 0; fb && i < fb->tile.regions; i++)
125 nvkm_engine_tile(engine, i);
130 nvkm_engine_dtor(struct nvkm_subdev *subdev)
132 struct nvkm_engine *engine = nvkm_engine(subdev);
133 if (engine->func->dtor)
134 return engine->func->dtor(engine);
138 static const struct nvkm_subdev_func
140 .dtor = nvkm_engine_dtor,
141 .init = nvkm_engine_init,
142 .fini = nvkm_engine_fini,
143 .intr = nvkm_engine_intr,
147 nvkm_engine_ctor(const struct nvkm_engine_func *func,
148 struct nvkm_device *device, int index, bool enable,
149 struct nvkm_engine *engine)
151 nvkm_subdev_ctor(&nvkm_engine_func, device, index, &engine->subdev);
154 if (!nvkm_boolopt(device->cfgopt, nvkm_subdev_name[index], enable)) {
155 nvkm_debug(&engine->subdev, "disabled\n");
159 spin_lock_init(&engine->lock);
164 nvkm_engine_new_(const struct nvkm_engine_func *func,
165 struct nvkm_device *device, int index, bool enable,
166 struct nvkm_engine **pengine)
168 if (!(*pengine = kzalloc(sizeof(**pengine), GFP_KERNEL)))
170 return nvkm_engine_ctor(func, device, index, enable, *pengine);