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
28 int
nvkm_object_mthd(struct nvkm_object * object,u32 mthd,void * data,u32 size)29 nvkm_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
36 int
nvkm_object_ntfy(struct nvkm_object * object,u32 mthd,struct nvkm_event ** pevent)37 nvkm_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
45 int
nvkm_object_map(struct nvkm_object * object,u64 * addr,u32 * size)46 nvkm_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
53 int
nvkm_object_rd08(struct nvkm_object * object,u64 addr,u8 * data)54 nvkm_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
61 int
nvkm_object_rd16(struct nvkm_object * object,u64 addr,u16 * data)62 nvkm_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
69 int
nvkm_object_rd32(struct nvkm_object * object,u64 addr,u32 * data)70 nvkm_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
77 int
nvkm_object_wr08(struct nvkm_object * object,u64 addr,u8 data)78 nvkm_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
85 int
nvkm_object_wr16(struct nvkm_object * object,u64 addr,u16 data)86 nvkm_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
93 int
nvkm_object_wr32(struct nvkm_object * object,u64 addr,u32 data)94 nvkm_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
101 int
nvkm_object_bind(struct nvkm_object * object,struct nvkm_gpuobj * gpuobj,int align,struct nvkm_gpuobj ** pgpuobj)102 nvkm_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
110 int
nvkm_object_fini(struct nvkm_object * object,bool suspend)111 nvkm_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
140 fail:
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 }
146 fail_child:
147 list_for_each_entry_continue_reverse(child, &object->tree, head) {
148 nvkm_object_init(child);
149 }
150 return ret;
151 }
152
153 int
nvkm_object_init(struct nvkm_object * object)154 nvkm_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
179 fail_child:
180 list_for_each_entry_continue_reverse(child, &object->tree, head)
181 nvkm_object_fini(child, false);
182 fail:
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
189 void *
nvkm_object_dtor(struct nvkm_object * object)190 nvkm_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
211 void
nvkm_object_del(struct nvkm_object ** pobject)212 nvkm_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
224 void
nvkm_object_ctor(const struct nvkm_object_func * func,const struct nvkm_oclass * oclass,struct nvkm_object * object)225 nvkm_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
239 int
nvkm_object_new_(const struct nvkm_object_func * func,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)240 nvkm_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
253 static const struct nvkm_object_func
254 nvkm_object_func = {
255 };
256
257 int
nvkm_object_new(const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)258 nvkm_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