Merge tag 'cgroup-for-6.0-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6-block.git] / drivers / gpu / drm / amd / amdgpu / athub_v3_0.c
1 /*
2  * Copyright 2021 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_v3_0.h"
26 #include "athub/athub_3_0_0_offset.h"
27 #include "athub/athub_3_0_0_sh_mask.h"
28 #include "navi10_enum.h"
29 #include "soc15_common.h"
30
31 #define regATHUB_MISC_CNTL_V3_0_1                       0x00d7
32 #define regATHUB_MISC_CNTL_V3_0_1_BASE_IDX              0
33
34
35 static uint32_t athub_v3_0_get_cg_cntl(struct amdgpu_device *adev)
36 {
37         uint32_t data;
38
39         switch (adev->ip_versions[ATHUB_HWIP][0]) {
40         case IP_VERSION(3, 0, 1):
41                 data = RREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL_V3_0_1);
42                 break;
43         default:
44                 data = RREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL);
45                 break;
46         }
47         return data;
48 }
49
50 static void athub_v3_0_set_cg_cntl(struct amdgpu_device *adev, uint32_t data)
51 {
52         switch (adev->ip_versions[ATHUB_HWIP][0]) {
53         case IP_VERSION(3, 0, 1):
54                 WREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL_V3_0_1, data);
55                 break;
56         default:
57                 WREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL, data);
58                 break;
59         }
60 }
61
62 static void
63 athub_v3_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,
64                                             bool enable)
65 {
66         uint32_t def, data;
67
68         def = data = athub_v3_0_get_cg_cntl(adev);
69
70         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_ATHUB_MGCG))
71                 data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK;
72         else
73                 data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK;
74
75         if (def != data)
76                 athub_v3_0_set_cg_cntl(adev, data);
77 }
78
79 static void
80 athub_v3_0_update_medium_grain_light_sleep(struct amdgpu_device *adev,
81                                            bool enable)
82 {
83         uint32_t def, data;
84
85         def = data = athub_v3_0_get_cg_cntl(adev);
86
87         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_ATHUB_LS))
88                 data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
89         else
90                 data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
91
92         if (def != data)
93                 athub_v3_0_set_cg_cntl(adev, data);
94 }
95
96 int athub_v3_0_set_clockgating(struct amdgpu_device *adev,
97                                enum amd_clockgating_state state)
98 {
99         if (amdgpu_sriov_vf(adev))
100                 return 0;
101
102         switch (adev->ip_versions[ATHUB_HWIP][0]) {
103         case IP_VERSION(3, 0, 0):
104         case IP_VERSION(3, 0, 1):
105         case IP_VERSION(3, 0, 2):
106                 athub_v3_0_update_medium_grain_clock_gating(adev,
107                                 state == AMD_CG_STATE_GATE);
108                 athub_v3_0_update_medium_grain_light_sleep(adev,
109                                 state == AMD_CG_STATE_GATE);
110                 break;
111         default:
112                 break;
113         }
114
115         return 0;
116 }
117
118 void athub_v3_0_get_clockgating(struct amdgpu_device *adev, u64 *flags)
119 {
120         int data;
121
122         /* AMD_CG_SUPPORT_ATHUB_MGCG */
123         data = athub_v3_0_get_cg_cntl(adev);
124         if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK)
125                 *flags |= AMD_CG_SUPPORT_ATHUB_MGCG;
126
127         /* AMD_CG_SUPPORT_ATHUB_LS */
128         if (data & ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK)
129                 *flags |= AMD_CG_SUPPORT_ATHUB_LS;
130 }