1 | /* |
2 | * Copyright 2019 Advanced Micro Devices, 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 | */ |
23 | |
24 | #include "amdgpu.h" |
25 | #include "athub_v2_0.h" |
26 | |
27 | #include "athub/athub_2_0_0_offset.h" |
28 | #include "athub/athub_2_0_0_sh_mask.h" |
29 | #include "athub/athub_2_0_0_default.h" |
30 | |
31 | #include "soc15_common.h" |
32 | |
33 | static void |
34 | athub_v2_0_update_medium_grain_clock_gating(struct amdgpu_device *adev, |
35 | bool enable) |
36 | { |
37 | uint32_t def, data; |
38 | |
39 | if (!(adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG)) |
40 | return; |
41 | |
42 | def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL); |
43 | |
44 | if (enable) |
45 | data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK; |
46 | else |
47 | data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK; |
48 | |
49 | if (def != data) |
50 | WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data); |
51 | } |
52 | |
53 | static void |
54 | athub_v2_0_update_medium_grain_light_sleep(struct amdgpu_device *adev, |
55 | bool enable) |
56 | { |
57 | uint32_t def, data; |
58 | |
59 | if (!((adev->cg_flags & AMD_CG_SUPPORT_MC_LS) && |
60 | (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))) |
61 | return; |
62 | |
63 | def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL); |
64 | |
65 | if (enable) |
66 | data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK; |
67 | else |
68 | data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK; |
69 | |
70 | if (def != data) |
71 | WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data); |
72 | } |
73 | |
74 | int athub_v2_0_set_clockgating(struct amdgpu_device *adev, |
75 | enum amd_clockgating_state state) |
76 | { |
77 | if (amdgpu_sriov_vf(adev)) |
78 | return 0; |
79 | |
80 | switch (amdgpu_ip_version(adev, ip: ATHUB_HWIP, inst: 0)) { |
81 | case IP_VERSION(1, 3, 1): |
82 | case IP_VERSION(2, 0, 0): |
83 | case IP_VERSION(2, 0, 2): |
84 | athub_v2_0_update_medium_grain_clock_gating(adev, |
85 | enable: state == AMD_CG_STATE_GATE); |
86 | athub_v2_0_update_medium_grain_light_sleep(adev, |
87 | enable: state == AMD_CG_STATE_GATE); |
88 | break; |
89 | default: |
90 | break; |
91 | } |
92 | |
93 | return 0; |
94 | } |
95 | |
96 | void athub_v2_0_get_clockgating(struct amdgpu_device *adev, u64 *flags) |
97 | { |
98 | int data; |
99 | |
100 | /* AMD_CG_SUPPORT_ATHUB_MGCG */ |
101 | data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL); |
102 | if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK) |
103 | *flags |= AMD_CG_SUPPORT_ATHUB_MGCG; |
104 | |
105 | /* AMD_CG_SUPPORT_ATHUB_LS */ |
106 | if (data & ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK) |
107 | *flags |= AMD_CG_SUPPORT_ATHUB_LS; |
108 | } |
109 | |