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.
25 #include <core/object.h>
26 #include <core/namedb.h>
27 #include <core/handle.h>
28 #include <core/client.h>
29 #include <core/engctx.h>
31 #include <subdev/vm.h>
34 nouveau_engctx_exists(struct nouveau_object *parent,
35 struct nouveau_engine *engine, void **pobject)
37 struct nouveau_engctx *engctx;
38 struct nouveau_object *parctx;
40 list_for_each_entry(engctx, &engine->contexts, head) {
41 parctx = nv_pclass(nv_object(engctx), NV_PARENT_CLASS);
42 if (parctx == parent) {
43 atomic_inc(&nv_object(engctx)->refcount);
53 nouveau_engctx_create_(struct nouveau_object *parent,
54 struct nouveau_object *engobj,
55 struct nouveau_oclass *oclass,
56 struct nouveau_object *pargpu,
57 u32 size, u32 align, u32 flags,
58 int length, void **pobject)
60 struct nouveau_client *client = nouveau_client(parent);
61 struct nouveau_engine *engine = nv_engine(engobj);
62 struct nouveau_subdev *subdev = nv_subdev(engine);
63 struct nouveau_object *engctx;
67 /* check if this engine already has a context for the parent object,
68 * and reference it instead of creating a new one
70 spin_lock_irqsave(&engine->lock, save);
71 ret = nouveau_engctx_exists(parent, engine, pobject);
72 spin_unlock_irqrestore(&engine->lock, save);
76 /* create the new context, supports creating both raw objects and
77 * objects backed by instance memory
80 ret = nouveau_gpuobj_create_(parent, engobj, oclass,
82 pargpu, size, align, flags,
85 ret = nouveau_object_create_(parent, engobj, oclass,
86 NV_ENGCTX_CLASS, length, pobject);
93 /* must take the lock again and re-check a context doesn't already
94 * exist (in case of a race) - the lock had to be dropped before as
95 * it's not possible to allocate the object with it held.
97 spin_lock_irqsave(&engine->lock, save);
98 ret = nouveau_engctx_exists(parent, engine, pobject);
100 spin_unlock_irqrestore(&engine->lock, save);
101 nouveau_object_ref(NULL, &engctx);
106 atomic_inc(&client->vm->engref[nv_engidx(engobj)]);
107 list_add(&nv_engctx(engctx)->head, &engine->contexts);
108 nv_engctx(engctx)->addr = ~0ULL;
109 spin_unlock_irqrestore(&engine->lock, save);
114 nouveau_engctx_destroy(struct nouveau_engctx *engctx)
116 struct nouveau_object *engobj = nv_object(engctx)->engine;
117 struct nouveau_engine *engine = nv_engine(engobj);
118 struct nouveau_client *client = nouveau_client(engctx);
121 nouveau_gpuobj_unmap(&engctx->vma);
122 spin_lock_irqsave(&engine->lock, save);
123 list_del(&engctx->head);
124 spin_unlock_irqrestore(&engine->lock, save);
127 atomic_dec(&client->vm->engref[nv_engidx(engobj)]);
129 if (engctx->base.size)
130 nouveau_gpuobj_destroy(&engctx->base);
132 nouveau_object_destroy(&engctx->base.base);
136 nouveau_engctx_init(struct nouveau_engctx *engctx)
138 struct nouveau_object *object = nv_object(engctx);
139 struct nouveau_subdev *subdev = nv_subdev(object->engine);
140 struct nouveau_object *parent;
141 struct nouveau_subdev *pardev;
144 ret = nouveau_gpuobj_init(&engctx->base);
148 parent = nv_pclass(object->parent, NV_PARENT_CLASS);
149 pardev = nv_subdev(parent->engine);
150 if (nv_parent(parent)->context_attach) {
151 mutex_lock(&pardev->mutex);
152 ret = nv_parent(parent)->context_attach(parent, object);
153 mutex_unlock(&pardev->mutex);
157 nv_error(parent, "failed to attach %s context, %d\n",
162 nv_debug(parent, "attached %s context\n", subdev->name);
167 nouveau_engctx_fini(struct nouveau_engctx *engctx, bool suspend)
169 struct nouveau_object *object = nv_object(engctx);
170 struct nouveau_subdev *subdev = nv_subdev(object->engine);
171 struct nouveau_object *parent;
172 struct nouveau_subdev *pardev;
175 parent = nv_pclass(object->parent, NV_PARENT_CLASS);
176 pardev = nv_subdev(parent->engine);
177 if (nv_parent(parent)->context_detach) {
178 mutex_lock(&pardev->mutex);
179 ret = nv_parent(parent)->context_detach(parent, suspend, object);
180 mutex_unlock(&pardev->mutex);
184 nv_error(parent, "failed to detach %s context, %d\n",
189 nv_debug(parent, "detached %s context\n", subdev->name);
190 return nouveau_gpuobj_fini(&engctx->base, suspend);
194 _nouveau_engctx_dtor(struct nouveau_object *object)
196 nouveau_engctx_destroy(nv_engctx(object));
200 _nouveau_engctx_init(struct nouveau_object *object)
202 return nouveau_engctx_init(nv_engctx(object));
207 _nouveau_engctx_fini(struct nouveau_object *object, bool suspend)
209 return nouveau_engctx_fini(nv_engctx(object), suspend);
212 struct nouveau_object *
213 nouveau_engctx_lookup(struct nouveau_engine *engine, u64 addr)
215 struct nouveau_engctx *engctx;
217 list_for_each_entry(engctx, &engine->contexts, head) {
218 if (engctx->base.size &&
219 nv_gpuobj(engctx)->addr == addr)
220 return nv_object(engctx);
226 struct nouveau_handle *
227 nouveau_engctx_lookup_class(struct nouveau_engine *engine, u64 addr, u16 oclass)
229 struct nouveau_object *engctx = nouveau_engctx_lookup(engine, addr);
230 struct nouveau_namedb *namedb;
232 if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
233 return nouveau_namedb_get_class(namedb, oclass);
238 struct nouveau_handle *
239 nouveau_engctx_lookup_vinst(struct nouveau_engine *engine, u64 addr, u64 vinst)
241 struct nouveau_object *engctx = nouveau_engctx_lookup(engine, addr);
242 struct nouveau_namedb *namedb;
244 if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
245 return nouveau_namedb_get_vinst(namedb, vinst);
250 struct nouveau_handle *
251 nouveau_engctx_lookup_cinst(struct nouveau_engine *engine, u64 addr, u32 cinst)
253 struct nouveau_object *engctx = nouveau_engctx_lookup(engine, addr);
254 struct nouveau_namedb *namedb;
256 if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
257 return nouveau_namedb_get_cinst(namedb, cinst);
263 nouveau_engctx_handle_put(struct nouveau_handle *handle)
266 nouveau_namedb_put(handle);