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 nv31_bus_priv {
29 struct nouveau_bus base;
30 };
31
32 static void
nv31_bus_intr(struct nouveau_subdev * subdev)33 nv31_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 u32 gpio = nv_rd32(pbus, 0x001104) & nv_rd32(pbus, 0x001144);
38
39 if (gpio) {
40 subdev = nouveau_subdev(pbus, NVDEV_SUBDEV_GPIO);
41 if (subdev && subdev->intr)
42 subdev->intr(subdev);
43 }
44
45 if (stat & 0x00000008) { /* NV41- */
46 u32 addr = nv_rd32(pbus, 0x009084);
47 u32 data = nv_rd32(pbus, 0x009088);
48
49 nv_error(pbus, "MMIO %s of 0x%08x FAULT at 0x%06x\n",
50 (addr & 0x00000002) ? "write" : "read", data,
51 (addr & 0x00fffffc));
52
53 stat &= ~0x00000008;
54 nv_wr32(pbus, 0x001100, 0x00000008);
55 }
56
57 if (stat & 0x00070000) {
58 subdev = nouveau_subdev(pbus, NVDEV_SUBDEV_THERM);
59 if (subdev && subdev->intr)
60 subdev->intr(subdev);
61 stat &= ~0x00070000;
62 nv_wr32(pbus, 0x001100, 0x00070000);
63 }
64
65 if (stat) {
66 nv_error(pbus, "unknown intr 0x%08x\n", stat);
67 nv_mask(pbus, 0x001140, stat, 0x00000000);
68 }
69 }
70
71 static int
nv31_bus_init(struct nouveau_object * object)72 nv31_bus_init(struct nouveau_object *object)
73 {
74 struct nv31_bus_priv *priv = (void *)object;
75 int ret;
76
77 ret = nouveau_bus_init(&priv->base);
78 if (ret)
79 return ret;
80
81 nv_wr32(priv, 0x001100, 0xffffffff);
82 nv_wr32(priv, 0x001140, 0x00070008);
83 return 0;
84 }
85
86 static int
nv31_bus_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)87 nv31_bus_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
88 struct nouveau_oclass *oclass, void *data, u32 size,
89 struct nouveau_object **pobject)
90 {
91 struct nv31_bus_priv *priv;
92 int ret;
93
94 ret = nouveau_bus_create(parent, engine, oclass, &priv);
95 *pobject = nv_object(priv);
96 if (ret)
97 return ret;
98
99 nv_subdev(priv)->intr = nv31_bus_intr;
100 return 0;
101 }
102
103 struct nouveau_oclass
104 nv31_bus_oclass = {
105 .handle = NV_SUBDEV(BUS, 0x31),
106 .ofuncs = &(struct nouveau_ofuncs) {
107 .ctor = nv31_bus_ctor,
108 .dtor = _nouveau_bus_dtor,
109 .init = nv31_bus_init,
110 .fini = _nouveau_bus_fini,
111 },
112 };
113