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 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 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 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 (amdgpu_ip_version(adev, 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 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