Merge tag 'for-5.15/libata-2021-08-30' of git://git.kernel.dk/linux-block
[linux-2.6-microblaze.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         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 (adev->asic_type) {
81         case CHIP_NAVI10:
82         case CHIP_NAVI14:
83         case CHIP_NAVI12:
84                 athub_v2_0_update_medium_grain_clock_gating(adev,
85                                 state == AMD_CG_STATE_GATE);
86                 athub_v2_0_update_medium_grain_light_sleep(adev,
87                                 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, u32 *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 }