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 #include <subdev/gsp.h>
25
26 static void
ga100_mc_device_disable(struct nvkm_mc * mc,u32 mask)27 ga100_mc_device_disable(struct nvkm_mc *mc, u32 mask)
28 {
29 struct nvkm_device *device = mc->subdev.device;
30
31 nvkm_mask(device, 0x000600, mask, 0x00000000);
32 nvkm_rd32(device, 0x000600);
33 nvkm_rd32(device, 0x000600);
34 }
35
36 static void
ga100_mc_device_enable(struct nvkm_mc * mc,u32 mask)37 ga100_mc_device_enable(struct nvkm_mc *mc, u32 mask)
38 {
39 struct nvkm_device *device = mc->subdev.device;
40
41 nvkm_mask(device, 0x000600, mask, mask);
42 nvkm_rd32(device, 0x000600);
43 nvkm_rd32(device, 0x000600);
44 }
45
46 static bool
ga100_mc_device_enabled(struct nvkm_mc * mc,u32 mask)47 ga100_mc_device_enabled(struct nvkm_mc *mc, u32 mask)
48 {
49 return (nvkm_rd32(mc->subdev.device, 0x000600) & mask) == mask;
50 }
51
52 static const struct nvkm_mc_device_func
53 ga100_mc_device = {
54 .enabled = ga100_mc_device_enabled,
55 .enable = ga100_mc_device_enable,
56 .disable = ga100_mc_device_disable,
57 };
58
59 static void
ga100_mc_init(struct nvkm_mc * mc)60 ga100_mc_init(struct nvkm_mc *mc)
61 {
62 struct nvkm_device *device = mc->subdev.device;
63
64 nvkm_wr32(device, 0x000200, 0xffffffff);
65 nvkm_wr32(device, 0x000600, 0xffffffff);
66 }
67
68 static const struct nvkm_mc_func
69 ga100_mc = {
70 .init = ga100_mc_init,
71 .device = &ga100_mc_device,
72 };
73
74 int
ga100_mc_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_mc ** pmc)75 ga100_mc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
76 {
77 if (nvkm_gsp_rm(device->gsp))
78 return -ENODEV;
79
80 return nvkm_mc_new_(&ga100_mc, device, type, inst, pmc);
81 }
82