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24#include <core/engine.h>
25#include <core/device.h>
26#include <core/option.h>
27
28#include <subdev/fb.h>
29
30bool
31nvkm_engine_chsw_load(struct nvkm_engine *engine)
32{
33 if (engine->func->chsw_load)
34 return engine->func->chsw_load(engine);
35 return false;
36}
37
38void
39nvkm_engine_unref(struct nvkm_engine **pengine)
40{
41 struct nvkm_engine *engine = *pengine;
42 if (engine) {
43 mutex_lock(&engine->subdev.mutex);
44 if (--engine->usecount == 0)
45 nvkm_subdev_fini(&engine->subdev, false);
46 mutex_unlock(&engine->subdev.mutex);
47 *pengine = NULL;
48 }
49}
50
51struct nvkm_engine *
52nvkm_engine_ref(struct nvkm_engine *engine)
53{
54 if (engine) {
55 mutex_lock(&engine->subdev.mutex);
56 if (++engine->usecount == 1) {
57 int ret = nvkm_subdev_init(&engine->subdev);
58 if (ret) {
59 engine->usecount--;
60 mutex_unlock(&engine->subdev.mutex);
61 return ERR_PTR(ret);
62 }
63 }
64 mutex_unlock(&engine->subdev.mutex);
65 }
66 return engine;
67}
68
69void
70nvkm_engine_tile(struct nvkm_engine *engine, int region)
71{
72 struct nvkm_fb *fb = engine->subdev.device->fb;
73 if (engine->func->tile)
74 engine->func->tile(engine, region, &fb->tile.region[region]);
75}
76
77static void
78nvkm_engine_intr(struct nvkm_subdev *subdev)
79{
80 struct nvkm_engine *engine = nvkm_engine(subdev);
81 if (engine->func->intr)
82 engine->func->intr(engine);
83}
84
85static int
86nvkm_engine_fini(struct nvkm_subdev *subdev, bool suspend)
87{
88 struct nvkm_engine *engine = nvkm_engine(subdev);
89 if (engine->func->fini)
90 return engine->func->fini(engine, suspend);
91 return 0;
92}
93
94static int
95nvkm_engine_init(struct nvkm_subdev *subdev)
96{
97 struct nvkm_engine *engine = nvkm_engine(subdev);
98 struct nvkm_fb *fb = subdev->device->fb;
99 int ret = 0, i;
100 s64 time;
101
102 if (!engine->usecount) {
103 nvkm_trace(subdev, "init skipped, engine has no users\n");
104 return ret;
105 }
106
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);
111 if (ret) {
112 nvkm_trace(subdev, "one-time init failed, %d\n", ret);
113 return ret;
114 }
115
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);
119 }
120
121 if (engine->func->init)
122 ret = engine->func->init(engine);
123
124 for (i = 0; fb && i < fb->tile.regions; i++)
125 nvkm_engine_tile(engine, i);
126 return ret;
127}
128
129static int
130nvkm_engine_preinit(struct nvkm_subdev *subdev)
131{
132 struct nvkm_engine *engine = nvkm_engine(subdev);
133 if (engine->func->preinit)
134 engine->func->preinit(engine);
135 return 0;
136}
137
138static void *
139nvkm_engine_dtor(struct nvkm_subdev *subdev)
140{
141 struct nvkm_engine *engine = nvkm_engine(subdev);
142 if (engine->func->dtor)
143 return engine->func->dtor(engine);
144 return engine;
145}
146
147static const struct nvkm_subdev_func
148nvkm_engine_func = {
149 .dtor = nvkm_engine_dtor,
150 .preinit = nvkm_engine_preinit,
151 .init = nvkm_engine_init,
152 .fini = nvkm_engine_fini,
153 .intr = nvkm_engine_intr,
154};
155
156int
157nvkm_engine_ctor(const struct nvkm_engine_func *func,
158 struct nvkm_device *device, int index, bool enable,
159 struct nvkm_engine *engine)
160{
161 nvkm_subdev_ctor(&nvkm_engine_func, device, index, &engine->subdev);
162 engine->func = func;
163
164 if (!nvkm_boolopt(device->cfgopt, nvkm_subdev_name[index], enable)) {
165 nvkm_debug(&engine->subdev, "disabled\n");
166 return -ENODEV;
167 }
168
169 spin_lock_init(&engine->lock);
170 return 0;
171}
172
173int
174nvkm_engine_new_(const struct nvkm_engine_func *func,
175 struct nvkm_device *device, int index, bool enable,
176 struct nvkm_engine **pengine)
177{
178 if (!(*pengine = kzalloc(sizeof(**pengine), GFP_KERNEL)))
179 return -ENOMEM;
180 return nvkm_engine_ctor(func, device, index, enable, *pengine);
181}
182