1 /*
2 * Copyright 2012 Nouveau Community
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: Martin Peres <martin.peres@labri.fr>
23 * Ben Skeggs
24 */
25
26 #include "nv04.h"
27
28 static void
nv04_bus_intr(struct nouveau_subdev * subdev)29 nv04_bus_intr(struct nouveau_subdev *subdev)
30 {
31 struct nouveau_bus *pbus = nouveau_bus(subdev);
32 u32 stat = nv_rd32(pbus, 0x001100) & nv_rd32(pbus, 0x001140);
33
34 if (stat & 0x00000001) {
35 nv_error(pbus, "BUS ERROR\n");
36 stat &= ~0x00000001;
37 nv_wr32(pbus, 0x001100, 0x00000001);
38 }
39
40 if (stat & 0x00000110) {
41 subdev = nouveau_subdev(subdev, NVDEV_SUBDEV_GPIO);
42 if (subdev && subdev->intr)
43 subdev->intr(subdev);
44 stat &= ~0x00000110;
45 nv_wr32(pbus, 0x001100, 0x00000110);
46 }
47
48 if (stat) {
49 nv_error(pbus, "unknown intr 0x%08x\n", stat);
50 nv_mask(pbus, 0x001140, stat, 0x00000000);
51 }
52 }
53
54 static int
nv04_bus_init(struct nouveau_object * object)55 nv04_bus_init(struct nouveau_object *object)
56 {
57 struct nv04_bus_priv *priv = (void *)object;
58
59 nv_wr32(priv, 0x001100, 0xffffffff);
60 nv_wr32(priv, 0x001140, 0x00000111);
61
62 return nouveau_bus_init(&priv->base);
63 }
64
65 int
nv04_bus_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)66 nv04_bus_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
67 struct nouveau_oclass *oclass, void *data, u32 size,
68 struct nouveau_object **pobject)
69 {
70 struct nv04_bus_impl *impl = (void *)oclass;
71 struct nv04_bus_priv *priv;
72 int ret;
73
74 ret = nouveau_bus_create(parent, engine, oclass, &priv);
75 *pobject = nv_object(priv);
76 if (ret)
77 return ret;
78
79 nv_subdev(priv)->intr = impl->intr;
80 priv->base.hwsq_exec = impl->hwsq_exec;
81 priv->base.hwsq_size = impl->hwsq_size;
82 return 0;
83 }
84
85 struct nouveau_oclass *
86 nv04_bus_oclass = &(struct nv04_bus_impl) {
87 .base.handle = NV_SUBDEV(BUS, 0x04),
88 .base.ofuncs = &(struct nouveau_ofuncs) {
89 .ctor = nv04_bus_ctor,
90 .dtor = _nouveau_bus_dtor,
91 .init = nv04_bus_init,
92 .fini = _nouveau_bus_fini,
93 },
94 .intr = nv04_bus_intr,
95 }.base;
96