1/* $NetBSD: nouveau_core_parent.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $ */
2
3/*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26
27#include <sys/cdefs.h>
28__KERNEL_RCSID(0, "$NetBSD: nouveau_core_parent.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $");
29
30#include <core/object.h>
31#include <core/parent.h>
32#include <core/client.h>
33
34int
35nouveau_parent_sclass(struct nouveau_object *parent, u16 handle,
36 struct nouveau_object **pengine,
37 struct nouveau_oclass **poclass)
38{
39 struct nouveau_sclass *sclass;
40 struct nouveau_engine *engine;
41 struct nouveau_oclass *oclass;
42 u64 mask;
43
44 sclass = nv_parent(parent)->sclass;
45 while (sclass) {
46 if ((sclass->oclass->handle & 0xffff) == handle) {
47 *pengine = parent->engine;
48 *poclass = sclass->oclass;
49 return 0;
50 }
51
52 sclass = sclass->sclass;
53 }
54
55 mask = nv_parent(parent)->engine;
56 while (mask) {
57 int i = __ffs64(mask);
58
59 if (nv_iclass(parent, NV_CLIENT_CLASS))
60 engine = nv_engine(nv_client(parent)->device);
61 else
62 engine = nouveau_engine(parent, i);
63
64 if (engine) {
65 oclass = engine->sclass;
66 while (oclass->ofuncs) {
67 if ((oclass->handle & 0xffff) == handle) {
68 *pengine = nv_object(engine);
69 *poclass = oclass;
70 return 0;
71 }
72 oclass++;
73 }
74 }
75
76 mask &= ~(1ULL << i);
77 }
78
79 return -EINVAL;
80}
81
82int
83nouveau_parent_create_(struct nouveau_object *parent,
84 struct nouveau_object *engine,
85 struct nouveau_oclass *oclass, u32 pclass,
86 struct nouveau_oclass *sclass, u64 engcls,
87 int size, void **pobject)
88{
89 struct nouveau_parent *object;
90 struct nouveau_sclass *nclass;
91 int ret;
92
93 ret = nouveau_object_create_(parent, engine, oclass, pclass |
94 NV_PARENT_CLASS, size, pobject);
95 object = *pobject;
96 if (ret)
97 return ret;
98
99 while (sclass && sclass->ofuncs) {
100 nclass = kzalloc(sizeof(*nclass), GFP_KERNEL);
101 if (!nclass)
102 return -ENOMEM;
103
104 nclass->sclass = object->sclass;
105 object->sclass = nclass;
106 nclass->engine = engine ? nv_engine(engine) : NULL;
107 nclass->oclass = sclass;
108 sclass++;
109 }
110
111 object->engine = engcls;
112 return 0;
113}
114
115void
116nouveau_parent_destroy(struct nouveau_parent *parent)
117{
118 struct nouveau_sclass *sclass;
119
120 while ((sclass = parent->sclass)) {
121 parent->sclass = sclass->sclass;
122 kfree(sclass);
123 }
124
125 nouveau_object_destroy(&parent->base);
126}
127
128
129void
130_nouveau_parent_dtor(struct nouveau_object *object)
131{
132 nouveau_parent_destroy(nv_parent(object));
133}
134