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 <subdev/bus.h>
27
28 struct nvc0_bus_priv {
29 struct nouveau_bus base;
30 };
31
32 static void
nvc0_bus_intr(struct nouveau_subdev * subdev)33 nvc0_bus_intr(struct nouveau_subdev *subdev)
34 {
35 struct nouveau_bus *pbus = nouveau_bus(subdev);
36 u32 stat = nv_rd32(pbus, 0x001100) & nv_rd32(pbus, 0x001140);
37
38 if (stat & 0x0000000e) {
39 u32 addr = nv_rd32(pbus, 0x009084);
40 u32 data = nv_rd32(pbus, 0x009088);
41
42 nv_error(pbus, "MMIO %s of 0x%08x FAULT at 0x%06x [ %s%s%s]\n",
43 (addr & 0x00000002) ? "write" : "read", data,
44 (addr & 0x00fffffc),
45 (stat & 0x00000002) ? "!ENGINE " : "",
46 (stat & 0x00000004) ? "IBUS " : "",
47 (stat & 0x00000008) ? "TIMEOUT " : "");
48
49 nv_wr32(pbus, 0x009084, 0x00000000);
50 nv_wr32(pbus, 0x001100, (stat & 0x0000000e));
51 stat &= ~0x0000000e;
52 }
53
54 if (stat) {
55 nv_error(pbus, "unknown intr 0x%08x\n", stat);
56 nv_mask(pbus, 0x001140, stat, 0x00000000);
57 }
58 }
59
60 static int
nvc0_bus_init(struct nouveau_object * object)61 nvc0_bus_init(struct nouveau_object *object)
62 {
63 struct nvc0_bus_priv *priv = (void *)object;
64 int ret;
65
66 ret = nouveau_bus_init(&priv->base);
67 if (ret)
68 return ret;
69
70 nv_wr32(priv, 0x001100, 0xffffffff);
71 nv_wr32(priv, 0x001140, 0x0000000e);
72 return 0;
73 }
74
75 static int
nvc0_bus_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)76 nvc0_bus_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
77 struct nouveau_oclass *oclass, void *data, u32 size,
78 struct nouveau_object **pobject)
79 {
80 struct nvc0_bus_priv *priv;
81 int ret;
82
83 ret = nouveau_bus_create(parent, engine, oclass, &priv);
84 *pobject = nv_object(priv);
85 if (ret)
86 return ret;
87
88 nv_subdev(priv)->intr = nvc0_bus_intr;
89 return 0;
90 }
91
92 struct nouveau_oclass
93 nvc0_bus_oclass = {
94 .handle = NV_SUBDEV(BUS, 0xc0),
95 .ofuncs = &(struct nouveau_ofuncs) {
96 .ctor = nvc0_bus_ctor,
97 .dtor = _nouveau_bus_dtor,
98 .init = nvc0_bus_init,
99 .fini = _nouveau_bus_fini,
100 },
101 };
102