1 /* 2 * Copyright 2012 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 "radeon.h" 25 #include "trinityd.h" 26 #include "trinity_dpm.h" 27 #include "ppsmc.h" 28 29 static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id) 30 { 31 int i; 32 u32 v = 0; 33 34 WREG32(SMC_MESSAGE_0, id); 35 for (i = 0; i < rdev->usec_timeout; i++) { 36 if (RREG32(SMC_RESP_0) != 0) 37 break; 38 udelay(1); 39 } 40 v = RREG32(SMC_RESP_0); 41 42 if (v != 1) { 43 if (v == 0xFF) { 44 DRM_ERROR("SMC failed to handle the message!\n"); 45 return -EINVAL; 46 } else if (v == 0xFE) { 47 DRM_ERROR("Unknown SMC message!\n"); 48 return -EINVAL; 49 } 50 } 51 52 return 0; 53 } 54 55 int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable) 56 { 57 if (enable) 58 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM); 59 else 60 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM); 61 } 62 63 int trinity_dpm_config(struct radeon_device *rdev, bool enable) 64 { 65 if (enable) 66 WREG32_SMC(SMU_SCRATCH0, 1); 67 else 68 WREG32_SMC(SMU_SCRATCH0, 0); 69 70 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config); 71 } 72 73 int trinity_dpm_force_state(struct radeon_device *rdev, u32 n) 74 { 75 WREG32_SMC(SMU_SCRATCH0, n); 76 77 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState); 78 } 79 80 int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n) 81 { 82 WREG32_SMC(SMU_SCRATCH0, n); 83 84 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled); 85 } 86 87 int trinity_uvd_dpm_config(struct radeon_device *rdev) 88 { 89 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config); 90 } 91 92 int trinity_dpm_no_forced_level(struct radeon_device *rdev) 93 { 94 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel); 95 } 96 97 int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev, 98 bool enable) 99 { 100 if (enable) 101 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment); 102 else 103 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment); 104 } 105 106 int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev) 107 { 108 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config); 109 } 110 111 void trinity_acquire_mutex(struct radeon_device *rdev) 112 { 113 int i; 114 115 WREG32(SMC_INT_REQ, 1); 116 for (i = 0; i < rdev->usec_timeout; i++) { 117 if ((RREG32(SMC_INT_REQ) & 0xffff) == 1) 118 break; 119 udelay(1); 120 } 121 } 122 123 void trinity_release_mutex(struct radeon_device *rdev) 124 { 125 WREG32(SMC_INT_REQ, 0); 126 } 127