1 /*
2 * Copyright 2021 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 #include "priv.h"
23
24 static void
ga100_mc_device_disable(struct nvkm_mc * mc,u32 mask)25 ga100_mc_device_disable(struct nvkm_mc *mc, u32 mask)
26 {
27 struct nvkm_device *device = mc->subdev.device;
28
29 nvkm_mask(device, 0x000600, mask, 0x00000000);
30 nvkm_rd32(device, 0x000600);
31 nvkm_rd32(device, 0x000600);
32 }
33
34 static void
ga100_mc_device_enable(struct nvkm_mc * mc,u32 mask)35 ga100_mc_device_enable(struct nvkm_mc *mc, u32 mask)
36 {
37 struct nvkm_device *device = mc->subdev.device;
38
39 nvkm_mask(device, 0x000600, mask, mask);
40 nvkm_rd32(device, 0x000600);
41 nvkm_rd32(device, 0x000600);
42 }
43
44 static bool
ga100_mc_device_enabled(struct nvkm_mc * mc,u32 mask)45 ga100_mc_device_enabled(struct nvkm_mc *mc, u32 mask)
46 {
47 return (nvkm_rd32(mc->subdev.device, 0x000600) & mask) == mask;
48 }
49
50 static const struct nvkm_mc_device_func
51 ga100_mc_device = {
52 .enabled = ga100_mc_device_enabled,
53 .enable = ga100_mc_device_enable,
54 .disable = ga100_mc_device_disable,
55 };
56
57 static void
ga100_mc_init(struct nvkm_mc * mc)58 ga100_mc_init(struct nvkm_mc *mc)
59 {
60 struct nvkm_device *device = mc->subdev.device;
61
62 nvkm_wr32(device, 0x000200, 0xffffffff);
63 nvkm_wr32(device, 0x000600, 0xffffffff);
64 }
65
66 static const struct nvkm_mc_func
67 ga100_mc = {
68 .init = ga100_mc_init,
69 .device = &ga100_mc_device,
70 };
71
72 int
ga100_mc_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_mc ** pmc)73 ga100_mc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
74 {
75 return nvkm_mc_new_(&ga100_mc, device, type, inst, pmc);
76 }
77