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9274f4a9 BS |
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 | */ | |
9274f4a9 | 24 | #include <core/engine.h> |
5025407b | 25 | #include <core/device.h> |
9274f4a9 BS |
26 | #include <core/option.h> |
27 | ||
c85ee6ca BS |
28 | #include <subdev/fb.h> |
29 | ||
168c2e21 BS |
30 | void |
31 | nvkm_engine_unref(struct nvkm_engine **pengine) | |
32 | { | |
33 | struct nvkm_engine *engine = *pengine; | |
34 | if (engine) { | |
35 | mutex_lock(&engine->subdev.mutex); | |
36 | if (--engine->usecount == 0) | |
37 | nvkm_subdev_fini(&engine->subdev, false); | |
38 | mutex_unlock(&engine->subdev.mutex); | |
39 | *pengine = NULL; | |
40 | } | |
41 | } | |
42 | ||
43 | struct nvkm_engine * | |
44 | nvkm_engine_ref(struct nvkm_engine *engine) | |
45 | { | |
46 | if (engine) { | |
47 | mutex_lock(&engine->subdev.mutex); | |
48 | if (++engine->usecount == 1) { | |
49 | int ret = nvkm_subdev_init(&engine->subdev); | |
50 | if (ret) { | |
51 | engine->usecount--; | |
52 | mutex_unlock(&engine->subdev.mutex); | |
53 | return ERR_PTR(ret); | |
54 | } | |
55 | } | |
56 | mutex_unlock(&engine->subdev.mutex); | |
57 | } | |
58 | return engine; | |
59 | } | |
60 | ||
c85ee6ca BS |
61 | void |
62 | nvkm_engine_tile(struct nvkm_engine *engine, int region) | |
63 | { | |
64 | struct nvkm_fb *fb = engine->subdev.device->fb; | |
65 | if (engine->func->tile) | |
66 | engine->func->tile(engine, region, &fb->tile.region[region]); | |
67 | } | |
68 | ||
168c2e21 | 69 | static void |
68f3f702 | 70 | nvkm_engine_intr(struct nvkm_subdev *subdev) |
168c2e21 | 71 | { |
68f3f702 | 72 | struct nvkm_engine *engine = nvkm_engine(subdev); |
168c2e21 BS |
73 | if (engine->func->intr) |
74 | engine->func->intr(engine); | |
75 | } | |
76 | ||
77 | static int | |
68f3f702 | 78 | nvkm_engine_fini(struct nvkm_subdev *subdev, bool suspend) |
168c2e21 | 79 | { |
68f3f702 | 80 | struct nvkm_engine *engine = nvkm_engine(subdev); |
168c2e21 BS |
81 | if (engine->func->fini) |
82 | return engine->func->fini(engine, suspend); | |
83 | return 0; | |
84 | } | |
85 | ||
86 | static int | |
68f3f702 | 87 | nvkm_engine_init(struct nvkm_subdev *subdev) |
168c2e21 | 88 | { |
68f3f702 | 89 | struct nvkm_engine *engine = nvkm_engine(subdev); |
c85ee6ca BS |
90 | struct nvkm_fb *fb = subdev->device->fb; |
91 | int ret = 0, i; | |
168c2e21 BS |
92 | s64 time; |
93 | ||
94 | if (!engine->usecount) { | |
95 | nvkm_trace(subdev, "init skipped, engine has no users\n"); | |
96 | return ret; | |
97 | } | |
98 | ||
99 | if (engine->func->oneinit && !engine->subdev.oneinit) { | |
100 | nvkm_trace(subdev, "one-time init running...\n"); | |
101 | time = ktime_to_us(ktime_get()); | |
102 | ret = engine->func->oneinit(engine); | |
103 | if (ret) { | |
104 | nvkm_trace(subdev, "one-time init failed, %d\n", ret); | |
105 | return ret; | |
106 | } | |
107 | ||
108 | engine->subdev.oneinit = true; | |
109 | time = ktime_to_us(ktime_get()) - time; | |
110 | nvkm_trace(subdev, "one-time init completed in %lldus\n", time); | |
111 | } | |
112 | ||
113 | if (engine->func->init) | |
114 | ret = engine->func->init(engine); | |
115 | ||
c85ee6ca BS |
116 | for (i = 0; fb && i < fb->tile.regions; i++) |
117 | nvkm_engine_tile(engine, i); | |
168c2e21 BS |
118 | return ret; |
119 | } | |
120 | ||
121 | static void * | |
68f3f702 | 122 | nvkm_engine_dtor(struct nvkm_subdev *subdev) |
168c2e21 | 123 | { |
68f3f702 | 124 | struct nvkm_engine *engine = nvkm_engine(subdev); |
168c2e21 BS |
125 | if (engine->func->dtor) |
126 | return engine->func->dtor(engine); | |
127 | return engine; | |
128 | } | |
129 | ||
130 | static const struct nvkm_subdev_func | |
131 | nvkm_engine_func = { | |
132 | .dtor = nvkm_engine_dtor, | |
133 | .init = nvkm_engine_init, | |
134 | .fini = nvkm_engine_fini, | |
135 | .intr = nvkm_engine_intr, | |
136 | }; | |
137 | ||
138 | int | |
139 | nvkm_engine_ctor(const struct nvkm_engine_func *func, | |
56d06fa2 BS |
140 | struct nvkm_device *device, int index, bool enable, |
141 | struct nvkm_engine *engine) | |
168c2e21 | 142 | { |
56d06fa2 | 143 | nvkm_subdev_ctor(&nvkm_engine_func, device, index, &engine->subdev); |
168c2e21 BS |
144 | engine->func = func; |
145 | ||
146 | if (!nvkm_boolopt(device->cfgopt, nvkm_subdev_name[index], enable)) { | |
147 | nvkm_debug(&engine->subdev, "disabled\n"); | |
148 | return -ENODEV; | |
149 | } | |
150 | ||
151 | spin_lock_init(&engine->lock); | |
152 | return 0; | |
153 | } | |
154 | ||
155 | int | |
156 | nvkm_engine_new_(const struct nvkm_engine_func *func, | |
56d06fa2 BS |
157 | struct nvkm_device *device, int index, bool enable, |
158 | struct nvkm_engine **pengine) | |
168c2e21 BS |
159 | { |
160 | if (!(*pengine = kzalloc(sizeof(**pengine), GFP_KERNEL))) | |
161 | return -ENOMEM; | |
56d06fa2 | 162 | return nvkm_engine_ctor(func, device, index, enable, *pengine); |
168c2e21 | 163 | } |