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
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
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
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
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
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