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_1.h"
26
27 #include "athub/athub_2_1_0_offset.h"
28 #include "athub/athub_2_1_0_sh_mask.h"
29
30 #include "soc15_common.h"
31
32 static void
athub_v2_1_update_medium_grain_clock_gating(struct amdgpu_device * adev,bool enable)33 athub_v2_1_update_medium_grain_clock_gating(struct amdgpu_device *adev,
34 bool enable)
35 {
36 uint32_t def, data;
37
38 def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
39
40 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG))
41 data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK;
42 else
43 data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK;
44
45 if (def != data)
46 WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data);
47 }
48
49 static void
athub_v2_1_update_medium_grain_light_sleep(struct amdgpu_device * adev,bool enable)50 athub_v2_1_update_medium_grain_light_sleep(struct amdgpu_device *adev,
51 bool enable)
52 {
53 uint32_t def, data;
54
55 def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
56
57 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_LS) &&
58 (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
59 data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
60 else
61 data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
62
63 if(def != data)
64 WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data);
65 }
66
athub_v2_1_set_clockgating(struct amdgpu_device * adev,enum amd_clockgating_state state)67 int athub_v2_1_set_clockgating(struct amdgpu_device *adev,
68 enum amd_clockgating_state state)
69 {
70 if (amdgpu_sriov_vf(adev))
71 return 0;
72
73 switch (adev->ip_versions[ATHUB_HWIP][0]) {
74 case IP_VERSION(2, 1, 0):
75 case IP_VERSION(2, 1, 1):
76 case IP_VERSION(2, 1, 2):
77 case IP_VERSION(2, 4, 0):
78 athub_v2_1_update_medium_grain_clock_gating(adev, state == AMD_CG_STATE_GATE);
79 athub_v2_1_update_medium_grain_light_sleep(adev, state == AMD_CG_STATE_GATE);
80 break;
81 default:
82 break;
83 }
84
85 return 0;
86 }
87
athub_v2_1_get_clockgating(struct amdgpu_device * adev,u64 * flags)88 void athub_v2_1_get_clockgating(struct amdgpu_device *adev, u64 *flags)
89 {
90 int data;
91
92 /* AMD_CG_SUPPORT_ATHUB_MGCG */
93 data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
94 if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK)
95 *flags |= AMD_CG_SUPPORT_ATHUB_MGCG;
96
97 /* AMD_CG_SUPPORT_ATHUB_LS */
98 if (data & ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK)
99 *flags |= AMD_CG_SUPPORT_ATHUB_LS;
100 }
101