nv04.c revision 48ae0b355f21533145133002854de89a0537408d 
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
28static void
29nv04_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
54static int
55nv04_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
65int
66nv04_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	return 0;
81}
82
83struct nouveau_oclass *
84nv04_bus_oclass = &(struct nv04_bus_impl) {
85	.base.handle = NV_SUBDEV(BUS, 0x04),
86	.base.ofuncs = &(struct nouveau_ofuncs) {
87		.ctor = nv04_bus_ctor,
88		.dtor = _nouveau_bus_dtor,
89		.init = nv04_bus_init,
90		.fini = _nouveau_bus_fini,
91	},
92	.intr = nv04_bus_intr,
93}.base;
94