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 "priv.h"
25
26 static void
gf100_ibus_intr_hub(struct nvkm_subdev * ibus,int i)27 gf100_ibus_intr_hub(struct nvkm_subdev *ibus, int i)
28 {
29 struct nvkm_device *device = ibus->device;
30 u32 addr = nvkm_rd32(device, 0x122120 + (i * 0x0400));
31 u32 data = nvkm_rd32(device, 0x122124 + (i * 0x0400));
32 u32 stat = nvkm_rd32(device, 0x122128 + (i * 0x0400));
33 nvkm_debug(ibus, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
34 nvkm_mask(device, 0x122128 + (i * 0x0400), 0x00000200, 0x00000000);
35 }
36
37 static void
gf100_ibus_intr_rop(struct nvkm_subdev * ibus,int i)38 gf100_ibus_intr_rop(struct nvkm_subdev *ibus, int i)
39 {
40 struct nvkm_device *device = ibus->device;
41 u32 addr = nvkm_rd32(device, 0x124120 + (i * 0x0400));
42 u32 data = nvkm_rd32(device, 0x124124 + (i * 0x0400));
43 u32 stat = nvkm_rd32(device, 0x124128 + (i * 0x0400));
44 nvkm_debug(ibus, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
45 nvkm_mask(device, 0x124128 + (i * 0x0400), 0x00000200, 0x00000000);
46 }
47
48 static void
gf100_ibus_intr_gpc(struct nvkm_subdev * ibus,int i)49 gf100_ibus_intr_gpc(struct nvkm_subdev *ibus, int i)
50 {
51 struct nvkm_device *device = ibus->device;
52 u32 addr = nvkm_rd32(device, 0x128120 + (i * 0x0400));
53 u32 data = nvkm_rd32(device, 0x128124 + (i * 0x0400));
54 u32 stat = nvkm_rd32(device, 0x128128 + (i * 0x0400));
55 nvkm_debug(ibus, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
56 nvkm_mask(device, 0x128128 + (i * 0x0400), 0x00000200, 0x00000000);
57 }
58
59 void
gf100_ibus_intr(struct nvkm_subdev * ibus)60 gf100_ibus_intr(struct nvkm_subdev *ibus)
61 {
62 struct nvkm_device *device = ibus->device;
63 u32 intr0 = nvkm_rd32(device, 0x121c58);
64 u32 intr1 = nvkm_rd32(device, 0x121c5c);
65 u32 hubnr = nvkm_rd32(device, 0x121c70);
66 u32 ropnr = nvkm_rd32(device, 0x121c74);
67 u32 gpcnr = nvkm_rd32(device, 0x121c78);
68 u32 i;
69
70 for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) {
71 u32 stat = 0x00000100 << i;
72 if (intr0 & stat) {
73 gf100_ibus_intr_hub(ibus, i);
74 intr0 &= ~stat;
75 }
76 }
77
78 for (i = 0; (intr0 & 0xffff0000) && i < ropnr; i++) {
79 u32 stat = 0x00010000 << i;
80 if (intr0 & stat) {
81 gf100_ibus_intr_rop(ibus, i);
82 intr0 &= ~stat;
83 }
84 }
85
86 for (i = 0; intr1 && i < gpcnr; i++) {
87 u32 stat = 0x00000001 << i;
88 if (intr1 & stat) {
89 gf100_ibus_intr_gpc(ibus, i);
90 intr1 &= ~stat;
91 }
92 }
93 }
94
95 static int
gf100_ibus_init(struct nvkm_subdev * ibus)96 gf100_ibus_init(struct nvkm_subdev *ibus)
97 {
98 struct nvkm_device *device = ibus->device;
99 nvkm_mask(device, 0x122310, 0x0003ffff, 0x00000800);
100 nvkm_wr32(device, 0x12232c, 0x00100064);
101 nvkm_wr32(device, 0x122330, 0x00100064);
102 nvkm_wr32(device, 0x122334, 0x00100064);
103 nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000100);
104 return 0;
105 }
106
107 static const struct nvkm_subdev_func
108 gf100_ibus = {
109 .init = gf100_ibus_init,
110 .intr = gf100_ibus_intr,
111 };
112
113 int
gf100_ibus_new(struct nvkm_device * device,int index,struct nvkm_subdev ** pibus)114 gf100_ibus_new(struct nvkm_device *device, int index,
115 struct nvkm_subdev **pibus)
116 {
117 return nvkm_subdev_new_(&gf100_ibus, device, index, pibus);
118 }
119
