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 #include <subdev/timer.h>
26
27 static void
gk104_ibus_intr_hub(struct nvkm_subdev * ibus,int i)28 gk104_ibus_intr_hub(struct nvkm_subdev *ibus, int i)
29 {
30 struct nvkm_device *device = ibus->device;
31 u32 addr = nvkm_rd32(device, 0x122120 + (i * 0x0800));
32 u32 data = nvkm_rd32(device, 0x122124 + (i * 0x0800));
33 u32 stat = nvkm_rd32(device, 0x122128 + (i * 0x0800));
34 nvkm_debug(ibus, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
35 }
36
37 static void
gk104_ibus_intr_rop(struct nvkm_subdev * ibus,int i)38 gk104_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 * 0x0800));
42 u32 data = nvkm_rd32(device, 0x124124 + (i * 0x0800));
43 u32 stat = nvkm_rd32(device, 0x124128 + (i * 0x0800));
44 nvkm_debug(ibus, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
45 }
46
47 static void
gk104_ibus_intr_gpc(struct nvkm_subdev * ibus,int i)48 gk104_ibus_intr_gpc(struct nvkm_subdev *ibus, int i)
49 {
50 struct nvkm_device *device = ibus->device;
51 u32 addr = nvkm_rd32(device, 0x128120 + (i * 0x0800));
52 u32 data = nvkm_rd32(device, 0x128124 + (i * 0x0800));
53 u32 stat = nvkm_rd32(device, 0x128128 + (i * 0x0800));
54 nvkm_debug(ibus, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
55 }
56
57 void
gk104_ibus_intr(struct nvkm_subdev * ibus)58 gk104_ibus_intr(struct nvkm_subdev *ibus)
59 {
60 struct nvkm_device *device = ibus->device;
61 u32 intr0 = nvkm_rd32(device, 0x120058);
62 u32 intr1 = nvkm_rd32(device, 0x12005c);
63 u32 hubnr = nvkm_rd32(device, 0x120070);
64 u32 ropnr = nvkm_rd32(device, 0x120074);
65 u32 gpcnr = nvkm_rd32(device, 0x120078);
66 u32 i;
67
68 for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) {
69 u32 stat = 0x00000100 << i;
70 if (intr0 & stat) {
71 gk104_ibus_intr_hub(ibus, i);
72 intr0 &= ~stat;
73 }
74 }
75
76 for (i = 0; (intr0 & 0xffff0000) && i < ropnr; i++) {
77 u32 stat = 0x00010000 << i;
78 if (intr0 & stat) {
79 gk104_ibus_intr_rop(ibus, i);
80 intr0 &= ~stat;
81 }
82 }
83
84 for (i = 0; intr1 && i < gpcnr; i++) {
85 u32 stat = 0x00000001 << i;
86 if (intr1 & stat) {
87 gk104_ibus_intr_gpc(ibus, i);
88 intr1 &= ~stat;
89 }
90 }
91
92 nvkm_mask(device, 0x12004c, 0x0000003f, 0x00000002);
93 nvkm_msec(device, 2000,
94 if (!(nvkm_rd32(device, 0x12004c) & 0x0000003f))
95 break;
96 );
97 }
98
99 static int
gk104_ibus_init(struct nvkm_subdev * ibus)100 gk104_ibus_init(struct nvkm_subdev *ibus)
101 {
102 struct nvkm_device *device = ibus->device;
103 nvkm_mask(device, 0x122318, 0x0003ffff, 0x00001000);
104 nvkm_mask(device, 0x12231c, 0x0003ffff, 0x00000200);
105 nvkm_mask(device, 0x122310, 0x0003ffff, 0x00000800);
106 nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000100);
107 nvkm_mask(device, 0x1223b0, 0x0003ffff, 0x00000fff);
108 nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000200);
109 nvkm_mask(device, 0x122358, 0x0003ffff, 0x00002880);
110 return 0;
111 }
112
113 static const struct nvkm_subdev_func
114 gk104_ibus = {
115 .preinit = gk104_ibus_init,
116 .init = gk104_ibus_init,
117 .intr = gk104_ibus_intr,
118 };
119
120 int
gk104_ibus_new(struct nvkm_device * device,int index,struct nvkm_subdev ** pibus)121 gk104_ibus_new(struct nvkm_device *device, int index,
122 struct nvkm_subdev **pibus)
123 {
124 return nvkm_subdev_new_(&gk104_ibus, device, index, pibus);
125 }
126