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 #include "navi10_enum.h" 31 32 #include "soc15_common.h" 33 34 static void 35 athub_v2_0_update_medium_grain_clock_gating(struct amdgpu_device *adev, 36 bool enable) 37 { 38 uint32_t def, data; 39 40 def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL); 41 42 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG)) 43 data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK; 44 else 45 data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK; 46 47 if (def != data) 48 WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data); 49 } 50 51 static void 52 athub_v2_0_update_medium_grain_light_sleep(struct amdgpu_device *adev, 53 bool enable) 54 { 55 uint32_t def, data; 56 57 def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL); 58 59 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_LS) && 60 (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS)) 61 data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK; 62 else 63 data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK; 64 65 if (def != data) 66 WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data); 67 } 68 69 int athub_v2_0_set_clockgating(struct amdgpu_device *adev, 70 enum amd_clockgating_state state) 71 { 72 if (amdgpu_sriov_vf(adev)) 73 return 0; 74 75 switch (adev->asic_type) { 76 case CHIP_NAVI10: 77 case CHIP_NAVI14: 78 case CHIP_NAVI12: 79 athub_v2_0_update_medium_grain_clock_gating(adev, 80 state == AMD_CG_STATE_GATE); 81 athub_v2_0_update_medium_grain_light_sleep(adev, 82 state == AMD_CG_STATE_GATE); 83 break; 84 default: 85 break; 86 } 87 88 return 0; 89 } 90 91 void athub_v2_0_get_clockgating(struct amdgpu_device *adev, u32 *flags) 92 { 93 int data; 94 95 /* AMD_CG_SUPPORT_ATHUB_MGCG */ 96 data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL); 97 if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK) 98 *flags |= AMD_CG_SUPPORT_ATHUB_MGCG; 99 100 /* AMD_CG_SUPPORT_ATHUB_LS */ 101 if (data & ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK) 102 *flags |= AMD_CG_SUPPORT_ATHUB_LS; 103 } 104