1 /*
2 * Copyright 2012 Red Hat Inc.
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: Ben Skeggs
23 */
24 #include <subdev/ibus.h>
25
26 struct gf100_ibus_priv {
27 struct nvkm_ibus base;
28 };
29
30 static void
gf100_ibus_intr_hub(struct gf100_ibus_priv * priv,int i)31 gf100_ibus_intr_hub(struct gf100_ibus_priv *priv, int i)
32 {
33 u32 addr = nv_rd32(priv, 0x122120 + (i * 0x0400));
34 u32 data = nv_rd32(priv, 0x122124 + (i * 0x0400));
35 u32 stat = nv_rd32(priv, 0x122128 + (i * 0x0400));
36 nv_error(priv, "HUB%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat);
37 nv_mask(priv, 0x122128 + (i * 0x0400), 0x00000200, 0x00000000);
38 }
39
40 static void
gf100_ibus_intr_rop(struct gf100_ibus_priv * priv,int i)41 gf100_ibus_intr_rop(struct gf100_ibus_priv *priv, int i)
42 {
43 u32 addr = nv_rd32(priv, 0x124120 + (i * 0x0400));
44 u32 data = nv_rd32(priv, 0x124124 + (i * 0x0400));
45 u32 stat = nv_rd32(priv, 0x124128 + (i * 0x0400));
46 nv_error(priv, "ROP%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat);
47 nv_mask(priv, 0x124128 + (i * 0x0400), 0x00000200, 0x00000000);
48 }
49
50 static void
gf100_ibus_intr_gpc(struct gf100_ibus_priv * priv,int i)51 gf100_ibus_intr_gpc(struct gf100_ibus_priv *priv, int i)
52 {
53 u32 addr = nv_rd32(priv, 0x128120 + (i * 0x0400));
54 u32 data = nv_rd32(priv, 0x128124 + (i * 0x0400));
55 u32 stat = nv_rd32(priv, 0x128128 + (i * 0x0400));
56 nv_error(priv, "GPC%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat);
57 nv_mask(priv, 0x128128 + (i * 0x0400), 0x00000200, 0x00000000);
58 }
59
60 static void
gf100_ibus_intr(struct nvkm_subdev * subdev)61 gf100_ibus_intr(struct nvkm_subdev *subdev)
62 {
63 struct gf100_ibus_priv *priv = (void *)subdev;
64 u32 intr0 = nv_rd32(priv, 0x121c58);
65 u32 intr1 = nv_rd32(priv, 0x121c5c);
66 u32 hubnr = nv_rd32(priv, 0x121c70);
67 u32 ropnr = nv_rd32(priv, 0x121c74);
68 u32 gpcnr = nv_rd32(priv, 0x121c78);
69 u32 i;
70
71 for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) {
72 u32 stat = 0x00000100 << i;
73 if (intr0 & stat) {
74 gf100_ibus_intr_hub(priv, i);
75 intr0 &= ~stat;
76 }
77 }
78
79 for (i = 0; (intr0 & 0xffff0000) && i < ropnr; i++) {
80 u32 stat = 0x00010000 << i;
81 if (intr0 & stat) {
82 gf100_ibus_intr_rop(priv, i);
83 intr0 &= ~stat;
84 }
85 }
86
87 for (i = 0; intr1 && i < gpcnr; i++) {
88 u32 stat = 0x00000001 << i;
89 if (intr1 & stat) {
90 gf100_ibus_intr_gpc(priv, i);
91 intr1 &= ~stat;
92 }
93 }
94 }
95
96 static int
gf100_ibus_ctor(struct nvkm_object * parent,struct nvkm_object * engine,struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)97 gf100_ibus_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
98 struct nvkm_oclass *oclass, void *data, u32 size,
99 struct nvkm_object **pobject)
100 {
101 struct gf100_ibus_priv *priv;
102 int ret;
103
104 ret = nvkm_ibus_create(parent, engine, oclass, &priv);
105 *pobject = nv_object(priv);
106 if (ret)
107 return ret;
108
109 nv_subdev(priv)->intr = gf100_ibus_intr;
110 return 0;
111 }
112
113 struct nvkm_oclass
114 gf100_ibus_oclass = {
115 .handle = NV_SUBDEV(IBUS, 0xc0),
116 .ofuncs = &(struct nvkm_ofuncs) {
117 .ctor = gf100_ibus_ctor,
118 .dtor = _nvkm_ibus_dtor,
119 .init = _nvkm_ibus_init,
120 .fini = _nvkm_ibus_fini,
121 },
122 };
123