Merge tag 'amd-drm-next-5.13-2021-03-23' of https://gitlab.freedesktop.org/agd5f...
[sfrench/cifs-2.6.git] / drivers / gpu / drm / amd / amdgpu / athub_v2_0.c
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         def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
40
41         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG))
42                 data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK;
43         else
44                 data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK;
45
46         if (def != data)
47                 WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data);
48 }
49
50 static void
51 athub_v2_0_update_medium_grain_light_sleep(struct amdgpu_device *adev,
52                                            bool enable)
53 {
54         uint32_t def, data;
55
56         def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
57
58         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_LS) &&
59             (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
60                 data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
61         else
62                 data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
63
64         if (def != data)
65                 WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data);
66 }
67
68 int athub_v2_0_set_clockgating(struct amdgpu_device *adev,
69                                enum amd_clockgating_state state)
70 {
71         if (amdgpu_sriov_vf(adev))
72                 return 0;
73
74         switch (adev->asic_type) {
75         case CHIP_NAVI10:
76         case CHIP_NAVI14:
77         case CHIP_NAVI12:
78                 athub_v2_0_update_medium_grain_clock_gating(adev,
79                                 state == AMD_CG_STATE_GATE);
80                 athub_v2_0_update_medium_grain_light_sleep(adev,
81                                 state == AMD_CG_STATE_GATE);
82                 break;
83         default:
84                 break;
85         }
86
87         return 0;
88 }
89
90 void athub_v2_0_get_clockgating(struct amdgpu_device *adev, u32 *flags)
91 {
92         int data;
93
94         /* AMD_CG_SUPPORT_ATHUB_MGCG */
95         data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
96         if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK)
97                 *flags |= AMD_CG_SUPPORT_ATHUB_MGCG;
98
99         /* AMD_CG_SUPPORT_ATHUB_LS */
100         if (data & ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK)
101                 *flags |= AMD_CG_SUPPORT_ATHUB_LS;
102 }