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
25 #include <subdev/ibus.h>
26
27 struct nvc0_ibus_priv {
28 struct nouveau_ibus base;
29 };
30
31 static void
nvc0_ibus_intr_hub(struct nvc0_ibus_priv * priv,int i)32 nvc0_ibus_intr_hub(struct nvc0_ibus_priv *priv, int i)
33 {
34 u32 addr = nv_rd32(priv, 0x122120 + (i * 0x0400));
35 u32 data = nv_rd32(priv, 0x122124 + (i * 0x0400));
36 u32 stat = nv_rd32(priv, 0x122128 + (i * 0x0400));
37 nv_error(priv, "HUB%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat);
38 nv_mask(priv, 0x122128 + (i * 0x0400), 0x00000200, 0x00000000);
39 }
40
41 static void
nvc0_ibus_intr_rop(struct nvc0_ibus_priv * priv,int i)42 nvc0_ibus_intr_rop(struct nvc0_ibus_priv *priv, int i)
43 {
44 u32 addr = nv_rd32(priv, 0x124120 + (i * 0x0400));
45 u32 data = nv_rd32(priv, 0x124124 + (i * 0x0400));
46 u32 stat = nv_rd32(priv, 0x124128 + (i * 0x0400));
47 nv_error(priv, "ROP%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat);
48 nv_mask(priv, 0x124128 + (i * 0x0400), 0x00000200, 0x00000000);
49 }
50
51 static void
nvc0_ibus_intr_gpc(struct nvc0_ibus_priv * priv,int i)52 nvc0_ibus_intr_gpc(struct nvc0_ibus_priv *priv, int i)
53 {
54 u32 addr = nv_rd32(priv, 0x128120 + (i * 0x0400));
55 u32 data = nv_rd32(priv, 0x128124 + (i * 0x0400));
56 u32 stat = nv_rd32(priv, 0x128128 + (i * 0x0400));
57 nv_error(priv, "GPC%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat);
58 nv_mask(priv, 0x128128 + (i * 0x0400), 0x00000200, 0x00000000);
59 }
60
61 static void
nvc0_ibus_intr(struct nouveau_subdev * subdev)62 nvc0_ibus_intr(struct nouveau_subdev *subdev)
63 {
64 struct nvc0_ibus_priv *priv = (void *)subdev;
65 u32 intr0 = nv_rd32(priv, 0x121c58);
66 u32 intr1 = nv_rd32(priv, 0x121c5c);
67 u32 hubnr = nv_rd32(priv, 0x121c70);
68 u32 ropnr = nv_rd32(priv, 0x121c74);
69 u32 gpcnr = nv_rd32(priv, 0x121c78);
70 u32 i;
71
72 for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) {
73 u32 stat = 0x00000100 << i;
74 if (intr0 & stat) {
75 nvc0_ibus_intr_hub(priv, i);
76 intr0 &= ~stat;
77 }
78 }
79
80 for (i = 0; (intr0 & 0xffff0000) && i < ropnr; i++) {
81 u32 stat = 0x00010000 << i;
82 if (intr0 & stat) {
83 nvc0_ibus_intr_rop(priv, i);
84 intr0 &= ~stat;
85 }
86 }
87
88 for (i = 0; intr1 && i < gpcnr; i++) {
89 u32 stat = 0x00000001 << i;
90 if (intr1 & stat) {
91 nvc0_ibus_intr_gpc(priv, i);
92 intr1 &= ~stat;
93 }
94 }
95 }
96
97 static int
nvc0_ibus_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)98 nvc0_ibus_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
99 struct nouveau_oclass *oclass, void *data, u32 size,
100 struct nouveau_object **pobject)
101 {
102 struct nvc0_ibus_priv *priv;
103 int ret;
104
105 ret = nouveau_ibus_create(parent, engine, oclass, &priv);
106 *pobject = nv_object(priv);
107 if (ret)
108 return ret;
109
110 nv_subdev(priv)->intr = nvc0_ibus_intr;
111 return 0;
112 }
113
114 struct nouveau_oclass
115 nvc0_ibus_oclass = {
116 .handle = NV_SUBDEV(IBUS, 0xc0),
117 .ofuncs = &(struct nouveau_ofuncs) {
118 .ctor = nvc0_ibus_ctor,
119 .dtor = _nouveau_ibus_dtor,
120 .init = _nouveau_ibus_init,
121 .fini = _nouveau_ibus_fini,
122 },
123 };
124