1 /* $NetBSD: nouveau_subdev_ibus_nvc0.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $ */
2
3 /*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_ibus_nvc0.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $");
29
30 #include <subdev/ibus.h>
31
32 struct nvc0_ibus_priv {
33 struct nouveau_ibus base;
34 };
35
36 static void
nvc0_ibus_intr_hub(struct nvc0_ibus_priv * priv,int i)37 nvc0_ibus_intr_hub(struct nvc0_ibus_priv *priv, int i)
38 {
39 u32 addr = nv_rd32(priv, 0x122120 + (i * 0x0400));
40 u32 data = nv_rd32(priv, 0x122124 + (i * 0x0400));
41 u32 stat = nv_rd32(priv, 0x122128 + (i * 0x0400));
42 nv_error(priv, "HUB%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat);
43 nv_mask(priv, 0x122128 + (i * 0x0400), 0x00000200, 0x00000000);
44 }
45
46 static void
nvc0_ibus_intr_rop(struct nvc0_ibus_priv * priv,int i)47 nvc0_ibus_intr_rop(struct nvc0_ibus_priv *priv, int i)
48 {
49 u32 addr = nv_rd32(priv, 0x124120 + (i * 0x0400));
50 u32 data = nv_rd32(priv, 0x124124 + (i * 0x0400));
51 u32 stat = nv_rd32(priv, 0x124128 + (i * 0x0400));
52 nv_error(priv, "ROP%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat);
53 nv_mask(priv, 0x124128 + (i * 0x0400), 0x00000200, 0x00000000);
54 }
55
56 static void
nvc0_ibus_intr_gpc(struct nvc0_ibus_priv * priv,int i)57 nvc0_ibus_intr_gpc(struct nvc0_ibus_priv *priv, int i)
58 {
59 u32 addr = nv_rd32(priv, 0x128120 + (i * 0x0400));
60 u32 data = nv_rd32(priv, 0x128124 + (i * 0x0400));
61 u32 stat = nv_rd32(priv, 0x128128 + (i * 0x0400));
62 nv_error(priv, "GPC%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat);
63 nv_mask(priv, 0x128128 + (i * 0x0400), 0x00000200, 0x00000000);
64 }
65
66 static void
nvc0_ibus_intr(struct nouveau_subdev * subdev)67 nvc0_ibus_intr(struct nouveau_subdev *subdev)
68 {
69 struct nvc0_ibus_priv *priv = (void *)subdev;
70 u32 intr0 = nv_rd32(priv, 0x121c58);
71 u32 intr1 = nv_rd32(priv, 0x121c5c);
72 u32 hubnr = nv_rd32(priv, 0x121c70);
73 u32 ropnr = nv_rd32(priv, 0x121c74);
74 u32 gpcnr = nv_rd32(priv, 0x121c78);
75 u32 i;
76
77 for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) {
78 u32 stat = 0x00000100 << i;
79 if (intr0 & stat) {
80 nvc0_ibus_intr_hub(priv, i);
81 intr0 &= ~stat;
82 }
83 }
84
85 for (i = 0; (intr0 & 0xffff0000) && i < ropnr; i++) {
86 u32 stat = 0x00010000 << i;
87 if (intr0 & stat) {
88 nvc0_ibus_intr_rop(priv, i);
89 intr0 &= ~stat;
90 }
91 }
92
93 for (i = 0; intr1 && i < gpcnr; i++) {
94 u32 stat = 0x00000001 << i;
95 if (intr1 & stat) {
96 nvc0_ibus_intr_gpc(priv, i);
97 intr1 &= ~stat;
98 }
99 }
100 }
101
102 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)103 nvc0_ibus_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
104 struct nouveau_oclass *oclass, void *data, u32 size,
105 struct nouveau_object **pobject)
106 {
107 struct nvc0_ibus_priv *priv;
108 int ret;
109
110 ret = nouveau_ibus_create(parent, engine, oclass, &priv);
111 *pobject = nv_object(priv);
112 if (ret)
113 return ret;
114
115 nv_subdev(priv)->intr = nvc0_ibus_intr;
116 return 0;
117 }
118
119 struct nouveau_oclass
120 nvc0_ibus_oclass = {
121 .handle = NV_SUBDEV(IBUS, 0xc0),
122 .ofuncs = &(struct nouveau_ofuncs) {
123 .ctor = nvc0_ibus_ctor,
124 .dtor = _nouveau_ibus_dtor,
125 .init = _nouveau_ibus_init,
126 .fini = _nouveau_ibus_fini,
127 },
128 };
129