1 /* 2 * Copyright 2016 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 #include "amdgpu.h" 24 #include "athub_v1_0.h" 25 26 #include "athub/athub_1_0_offset.h" 27 #include "athub/athub_1_0_sh_mask.h" 28 #include "vega10_enum.h" 29 30 #include "soc15_common.h" 31 32 static void athub_update_medium_grain_clock_gating(struct amdgpu_device *adev, 33 bool enable) 34 { 35 uint32_t def, data; 36 37 def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL); 38 39 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG)) 40 data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK; 41 else 42 data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK; 43 44 if (def != data) 45 WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data); 46 } 47 48 static void athub_update_medium_grain_light_sleep(struct amdgpu_device *adev, 49 bool enable) 50 { 51 uint32_t def, data; 52 53 def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL); 54 55 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_LS) && 56 (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS)) 57 data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK; 58 else 59 data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK; 60 61 if(def != data) 62 WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data); 63 } 64 65 int athub_v1_0_set_clockgating(struct amdgpu_device *adev, 66 enum amd_clockgating_state state) 67 { 68 if (amdgpu_sriov_vf(adev)) 69 return 0; 70 71 switch (adev->ip_versions[ATHUB_HWIP][0]) { 72 case IP_VERSION(9, 0, 0): 73 case IP_VERSION(9, 1, 0): 74 case IP_VERSION(9, 2, 0): 75 case IP_VERSION(9, 3, 0): 76 case IP_VERSION(9, 4, 0): 77 case IP_VERSION(1, 5, 0): 78 athub_update_medium_grain_clock_gating(adev, 79 state == AMD_CG_STATE_GATE); 80 athub_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_v1_0_get_clockgating(struct amdgpu_device *adev, u64 *flags) 91 { 92 int data; 93 94 if (amdgpu_sriov_vf(adev)) 95 *flags = 0; 96 97 /* AMD_CG_SUPPORT_ATHUB_MGCG */ 98 data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL); 99 if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK) 100 *flags |= AMD_CG_SUPPORT_ATHUB_MGCG; 101 102 /* AMD_CG_SUPPORT_ATHUB_LS */ 103 if (data & ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK) 104 *flags |= AMD_CG_SUPPORT_ATHUB_LS; 105 } 106