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/parent.h>
25 #include <core/client.h>
26 #include <core/engine.h>
27
28 int
nvkm_parent_sclass(struct nvkm_object * parent,u16 handle,struct nvkm_object ** pengine,struct nvkm_oclass ** poclass)29 nvkm_parent_sclass(struct nvkm_object *parent, u16 handle,
30 struct nvkm_object **pengine,
31 struct nvkm_oclass **poclass)
32 {
33 struct nvkm_sclass *sclass;
34 struct nvkm_engine *engine;
35 struct nvkm_oclass *oclass;
36 u64 mask;
37
38 sclass = nv_parent(parent)->sclass;
39 while (sclass) {
40 if ((sclass->oclass->handle & 0xffff) == handle) {
41 *pengine = &parent->engine->subdev.object;
42 *poclass = sclass->oclass;
43 return 0;
44 }
45
46 sclass = sclass->sclass;
47 }
48
49 mask = nv_parent(parent)->engine;
50 while (mask) {
51 int i = __ffs64(mask);
52
53 if (nv_iclass(parent, NV_CLIENT_CLASS))
54 engine = nv_engine(nv_client(parent)->device);
55 else
56 engine = nvkm_engine(parent, i);
57
58 if (engine) {
59 oclass = engine->sclass;
60 while (oclass->ofuncs) {
61 if ((oclass->handle & 0xffff) == handle) {
62 *pengine = nv_object(engine);
63 *poclass = oclass;
64 return 0;
65 }
66 oclass++;
67 }
68 }
69
70 mask &= ~(1ULL << i);
71 }
72
73 return -EINVAL;
74 }
75
76 int
nvkm_parent_lclass(struct nvkm_object * parent,u32 * lclass,int size)77 nvkm_parent_lclass(struct nvkm_object *parent, u32 *lclass, int size)
78 {
79 struct nvkm_sclass *sclass;
80 struct nvkm_engine *engine;
81 struct nvkm_oclass *oclass;
82 int nr = -1, i;
83 u64 mask;
84
85 sclass = nv_parent(parent)->sclass;
86 while (sclass) {
87 if (++nr < size)
88 lclass[nr] = sclass->oclass->handle & 0xffff;
89 sclass = sclass->sclass;
90 }
91
92 mask = nv_parent(parent)->engine;
93 while (i = __ffs64(mask), mask) {
94 engine = nvkm_engine(parent, i);
95 if (engine && (oclass = engine->sclass)) {
96 while (oclass->ofuncs) {
97 if (++nr < size)
98 lclass[nr] = oclass->handle & 0xffff;
99 oclass++;
100 }
101 }
102
103 mask &= ~(1ULL << i);
104 }
105
106 return nr + 1;
107 }
108
109 int
nvkm_parent_create_(struct nvkm_object * parent,struct nvkm_object * engine,struct nvkm_oclass * oclass,u32 pclass,struct nvkm_oclass * sclass,u64 engcls,int size,void ** pobject)110 nvkm_parent_create_(struct nvkm_object *parent, struct nvkm_object *engine,
111 struct nvkm_oclass *oclass, u32 pclass,
112 struct nvkm_oclass *sclass, u64 engcls,
113 int size, void **pobject)
114 {
115 struct nvkm_parent *object;
116 struct nvkm_sclass *nclass;
117 int ret;
118
119 ret = nvkm_object_create_(parent, engine, oclass, pclass |
120 NV_PARENT_CLASS, size, pobject);
121 object = *pobject;
122 if (ret)
123 return ret;
124
125 while (sclass && sclass->ofuncs) {
126 nclass = kzalloc(sizeof(*nclass), GFP_KERNEL);
127 if (!nclass)
128 return -ENOMEM;
129
130 nclass->sclass = object->sclass;
131 object->sclass = nclass;
132 nclass->engine = engine ? nv_engine(engine) : NULL;
133 nclass->oclass = sclass;
134 sclass++;
135 }
136
137 object->engine = engcls;
138 return 0;
139 }
140
141 void
nvkm_parent_destroy(struct nvkm_parent * parent)142 nvkm_parent_destroy(struct nvkm_parent *parent)
143 {
144 struct nvkm_sclass *sclass;
145
146 while ((sclass = parent->sclass)) {
147 parent->sclass = sclass->sclass;
148 kfree(sclass);
149 }
150
151 nvkm_object_destroy(&parent->object);
152 }
153
154
155 void
_nvkm_parent_dtor(struct nvkm_object * object)156 _nvkm_parent_dtor(struct nvkm_object *object)
157 {
158 nvkm_parent_destroy(nv_parent(object));
159 }
160