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
27static void
28gf100_privring_intr_hub(struct nvkm_subdev *privring, int i)
29{
30	struct nvkm_device *device = privring->device;
31	u32 addr = nvkm_rd32(device, 0x122120 + (i * 0x0400));
32	u32 data = nvkm_rd32(device, 0x122124 + (i * 0x0400));
33	u32 stat = nvkm_rd32(device, 0x122128 + (i * 0x0400));
34	nvkm_debug(privring, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
35}
36
37static void
38gf100_privring_intr_rop(struct nvkm_subdev *privring, int i)
39{
40	struct nvkm_device *device = privring->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(privring, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
45}
46
47static void
48gf100_privring_intr_gpc(struct nvkm_subdev *privring, int i)
49{
50	struct nvkm_device *device = privring->device;
51	u32 addr = nvkm_rd32(device, 0x128120 + (i * 0x0400));
52	u32 data = nvkm_rd32(device, 0x128124 + (i * 0x0400));
53	u32 stat = nvkm_rd32(device, 0x128128 + (i * 0x0400));
54	nvkm_debug(privring, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
55}
56
57void
58gf100_privring_intr(struct nvkm_subdev *privring)
59{
60	struct nvkm_device *device = privring->device;
61	u32 intr0 = nvkm_rd32(device, 0x121c58);
62	u32 intr1 = nvkm_rd32(device, 0x121c5c);
63	u32 hubnr = nvkm_rd32(device, 0x121c70);
64	u32 ropnr = nvkm_rd32(device, 0x121c74);
65	u32 gpcnr = nvkm_rd32(device, 0x121c78);
66	u32 i;
67
68	for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) {
69		u32 stat = 0x00000100 << i;
70		if (intr0 & stat) {
71			gf100_privring_intr_hub(privring, 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			gf100_privring_intr_rop(privring, 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			gf100_privring_intr_gpc(privring, i);
88			intr1 &= ~stat;
89		}
90	}
91
92	nvkm_mask(device, 0x121c4c, 0x0000003f, 0x00000002);
93	nvkm_msec(device, 2000,
94		if (!(nvkm_rd32(device, 0x121c4c) & 0x0000003f))
95			break;
96	);
97}
98
99static int
100gf100_privring_init(struct nvkm_subdev *privring)
101{
102	struct nvkm_device *device = privring->device;
103	nvkm_mask(device, 0x122310, 0x0003ffff, 0x00000800);
104	nvkm_wr32(device, 0x12232c, 0x00100064);
105	nvkm_wr32(device, 0x122330, 0x00100064);
106	nvkm_wr32(device, 0x122334, 0x00100064);
107	nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000100);
108	return 0;
109}
110
111static const struct nvkm_subdev_func
112gf100_privring = {
113	.init = gf100_privring_init,
114	.intr = gf100_privring_intr,
115};
116
117int
118gf100_privring_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
119		   struct nvkm_subdev **pprivring)
120{
121	return nvkm_subdev_new_(&gf100_privring, device, type, inst, pprivring);
122}
123