1 /* $NetBSD: nouveau_core_engine.c,v 1.1.1.1 2014/08/06 12:36:23 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_engine.c,v 1.1.1.1 2014/08/06 12:36:23 riastradh Exp $");
29
30 #include <core/device.h>
31 #include <core/engine.h>
32 #include <core/option.h>
33
34 int
nouveau_engine_create_(struct nouveau_object * parent,struct nouveau_object * engobj,struct nouveau_oclass * oclass,bool enable,const char * iname,const char * fname,int length,void ** pobject)35 nouveau_engine_create_(struct nouveau_object *parent,
36 struct nouveau_object *engobj,
37 struct nouveau_oclass *oclass, bool enable,
38 const char *iname, const char *fname,
39 int length, void **pobject)
40 {
41 struct nouveau_engine *engine;
42 int ret;
43
44 ret = nouveau_subdev_create_(parent, engobj, oclass, NV_ENGINE_CLASS,
45 iname, fname, length, pobject);
46 engine = *pobject;
47 if (ret)
48 return ret;
49
50 if (parent) {
51 struct nouveau_device *device = nv_device(parent);
52 int engidx = nv_engidx(nv_object(engine));
53
54 if (device->disable_mask & (1ULL << engidx)) {
55 if (!nouveau_boolopt(device->cfgopt, iname, false)) {
56 nv_debug(engine, "engine disabled by hw/fw\n");
57 return -ENODEV;
58 }
59
60 nv_warn(engine, "ignoring hw/fw engine disable\n");
61 }
62
63 if (!nouveau_boolopt(device->cfgopt, iname, enable)) {
64 if (!enable)
65 nv_warn(engine, "disabled, %s=1 to enable\n", iname);
66 return -ENODEV;
67 }
68 }
69
70 INIT_LIST_HEAD(&engine->contexts);
71 spin_lock_init(&engine->lock);
72 return 0;
73 }
74