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
25 #include <core/object.h>
26 #include <core/parent.h>
27 #include <core/client.h>
28
29 int
nouveau_parent_sclass(struct nouveau_object * parent,u16 handle,struct nouveau_object ** pengine,struct nouveau_oclass ** poclass)30 nouveau_parent_sclass(struct nouveau_object *parent, u16 handle,
31 struct nouveau_object **pengine,
32 struct nouveau_oclass **poclass)
33 {
34 struct nouveau_sclass *sclass;
35 struct nouveau_engine *engine;
36 struct nouveau_oclass *oclass;
37 u64 mask;
38
39 sclass = nv_parent(parent)->sclass;
40 while (sclass) {
41 if ((sclass->oclass->handle & 0xffff) == handle) {
42 *pengine = parent->engine;
43 *poclass = sclass->oclass;
44 return 0;
45 }
46
47 sclass = sclass->sclass;
48 }
49
50 mask = nv_parent(parent)->engine;
51 while (mask) {
52 int i = ffsll(mask) - 1;
53
54 if (nv_iclass(parent, NV_CLIENT_CLASS))
55 engine = nv_engine(nv_client(parent)->device);
56 else
57 engine = nouveau_engine(parent, i);
58
59 if (engine) {
60 oclass = engine->sclass;
61 while (oclass->ofuncs) {
62 if ((oclass->handle & 0xffff) == handle) {
63 *pengine = nv_object(engine);
64 *poclass = oclass;
65 return 0;
66 }
67 oclass++;
68 }
69 }
70
71 mask &= ~(1ULL << i);
72 }
73
74 return -EINVAL;
75 }
76
77 int
nouveau_parent_create_(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,u32 pclass,struct nouveau_oclass * sclass,u64 engcls,int size,void ** pobject)78 nouveau_parent_create_(struct nouveau_object *parent,
79 struct nouveau_object *engine,
80 struct nouveau_oclass *oclass, u32 pclass,
81 struct nouveau_oclass *sclass, u64 engcls,
82 int size, void **pobject)
83 {
84 struct nouveau_parent *object;
85 struct nouveau_sclass *nclass;
86 int ret;
87
88 ret = nouveau_object_create_(parent, engine, oclass, pclass |
89 NV_PARENT_CLASS, size, pobject);
90 object = *pobject;
91 if (ret)
92 return ret;
93
94 while (sclass && sclass->ofuncs) {
95 nclass = kzalloc(sizeof(*nclass), GFP_KERNEL);
96 if (!nclass)
97 return -ENOMEM;
98
99 nclass->sclass = object->sclass;
100 object->sclass = nclass;
101 nclass->engine = engine ? nv_engine(engine) : NULL;
102 nclass->oclass = sclass;
103 sclass++;
104 }
105
106 object->engine = engcls;
107 return 0;
108 }
109
110 void
nouveau_parent_destroy(struct nouveau_parent * parent)111 nouveau_parent_destroy(struct nouveau_parent *parent)
112 {
113 struct nouveau_sclass *sclass;
114
115 while ((sclass = parent->sclass)) {
116 parent->sclass = sclass->sclass;
117 kfree(sclass);
118 }
119
120 nouveau_object_destroy(&parent->base);
121 }
122
123
124 void
_nouveau_parent_dtor(struct nouveau_object * object)125 _nouveau_parent_dtor(struct nouveau_object *object)
126 {
127 nouveau_parent_destroy(nv_parent(object));
128 }
129