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/engine.h>
25 #include <core/device.h>
26 #include <core/option.h>
27
28 #include <subdev/fb.h>
29
30 bool
nvkm_engine_chsw_load(struct nvkm_engine * engine)31 nvkm_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
38 int
nvkm_engine_reset(struct nvkm_engine * engine)39 nvkm_engine_reset(struct nvkm_engine *engine)
40 {
41 if (engine->func->reset)
42 return engine->func->reset(engine);
43
44 nvkm_subdev_fini(&engine->subdev, false);
45 return nvkm_subdev_init(&engine->subdev);
46 }
47
48 void
nvkm_engine_unref(struct nvkm_engine ** pengine)49 nvkm_engine_unref(struct nvkm_engine **pengine)
50 {
51 struct nvkm_engine *engine = *pengine;
52
53 if (engine) {
54 nvkm_subdev_unref(&engine->subdev);
55 *pengine = NULL;
56 }
57 }
58
59 struct nvkm_engine *
nvkm_engine_ref(struct nvkm_engine * engine)60 nvkm_engine_ref(struct nvkm_engine *engine)
61 {
62 int ret;
63
64 if (engine) {
65 ret = nvkm_subdev_ref(&engine->subdev);
66 if (ret)
67 return ERR_PTR(ret);
68 }
69
70 return engine;
71 }
72
73 void
nvkm_engine_tile(struct nvkm_engine * engine,int region)74 nvkm_engine_tile(struct nvkm_engine *engine, int region)
75 {
76 struct nvkm_fb *fb = engine->subdev.device->fb;
77 if (engine->func->tile)
78 engine->func->tile(engine, region, &fb->tile.region[region]);
79 }
80
81 static void
nvkm_engine_intr(struct nvkm_subdev * subdev)82 nvkm_engine_intr(struct nvkm_subdev *subdev)
83 {
84 struct nvkm_engine *engine = nvkm_engine(subdev);
85 if (engine->func->intr)
86 engine->func->intr(engine);
87 }
88
89 static int
nvkm_engine_info(struct nvkm_subdev * subdev,u64 mthd,u64 * data)90 nvkm_engine_info(struct nvkm_subdev *subdev, u64 mthd, u64 *data)
91 {
92 struct nvkm_engine *engine = nvkm_engine(subdev);
93
94 if (engine->func->info)
95 return engine->func->info(engine, mthd, data);
96
97 return -ENOSYS;
98 }
99
100 static int
nvkm_engine_fini(struct nvkm_subdev * subdev,bool suspend)101 nvkm_engine_fini(struct nvkm_subdev *subdev, bool suspend)
102 {
103 struct nvkm_engine *engine = nvkm_engine(subdev);
104 if (engine->func->fini)
105 return engine->func->fini(engine, suspend);
106 return 0;
107 }
108
109 static int
nvkm_engine_init(struct nvkm_subdev * subdev)110 nvkm_engine_init(struct nvkm_subdev *subdev)
111 {
112 struct nvkm_engine *engine = nvkm_engine(subdev);
113 struct nvkm_fb *fb = subdev->device->fb;
114 int ret = 0, i;
115
116 if (engine->func->init)
117 ret = engine->func->init(engine);
118
119 for (i = 0; fb && i < fb->tile.regions; i++)
120 nvkm_engine_tile(engine, i);
121 return ret;
122 }
123
124 static int
nvkm_engine_oneinit(struct nvkm_subdev * subdev)125 nvkm_engine_oneinit(struct nvkm_subdev *subdev)
126 {
127 struct nvkm_engine *engine = nvkm_engine(subdev);
128
129 if (engine->func->oneinit)
130 return engine->func->oneinit(engine);
131
132 return 0;
133 }
134
135 static int
nvkm_engine_preinit(struct nvkm_subdev * subdev)136 nvkm_engine_preinit(struct nvkm_subdev *subdev)
137 {
138 struct nvkm_engine *engine = nvkm_engine(subdev);
139 if (engine->func->preinit)
140 engine->func->preinit(engine);
141 return 0;
142 }
143
144 static void *
nvkm_engine_dtor(struct nvkm_subdev * subdev)145 nvkm_engine_dtor(struct nvkm_subdev *subdev)
146 {
147 struct nvkm_engine *engine = nvkm_engine(subdev);
148 if (engine->func->dtor)
149 return engine->func->dtor(engine);
150 return engine;
151 }
152
153 const struct nvkm_subdev_func
154 nvkm_engine = {
155 .dtor = nvkm_engine_dtor,
156 .preinit = nvkm_engine_preinit,
157 .oneinit = nvkm_engine_oneinit,
158 .init = nvkm_engine_init,
159 .fini = nvkm_engine_fini,
160 .info = nvkm_engine_info,
161 .intr = nvkm_engine_intr,
162 };
163
164 int
nvkm_engine_ctor(const struct nvkm_engine_func * func,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,bool enable,struct nvkm_engine * engine)165 nvkm_engine_ctor(const struct nvkm_engine_func *func, struct nvkm_device *device,
166 enum nvkm_subdev_type type, int inst, bool enable, struct nvkm_engine *engine)
167 {
168 engine->func = func;
169 nvkm_subdev_ctor(&nvkm_engine, device, type, inst, &engine->subdev);
170 refcount_set(&engine->subdev.use.refcount, 0);
171
172 if (!nvkm_boolopt(device->cfgopt, engine->subdev.name, enable)) {
173 nvkm_debug(&engine->subdev, "disabled\n");
174 return -ENODEV;
175 }
176
177 spin_lock_init(&engine->lock);
178 return 0;
179 }
180
181 int
nvkm_engine_new_(const struct nvkm_engine_func * func,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,bool enable,struct nvkm_engine ** pengine)182 nvkm_engine_new_(const struct nvkm_engine_func *func, struct nvkm_device *device,
183 enum nvkm_subdev_type type, int inst, bool enable,
184 struct nvkm_engine **pengine)
185 {
186 if (!(*pengine = kzalloc(sizeof(**pengine), GFP_KERNEL)))
187 return -ENOMEM;
188 return nvkm_engine_ctor(func, device, type, inst, enable, *pengine);
189 }
190