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
28 gf100_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 
37 static void
38 gf100_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 
47 static void
48 gf100_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 
57 void
58 gf100_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 
99 static int
100 gf100_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 
111 static const struct nvkm_subdev_func
112 gf100_privring = {
113 	.init = gf100_privring_init,
114 	.intr = gf100_privring_intr,
115 };
116 
117 int
118 gf100_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