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 "drmP.h" 25 #include "radeon.h" 26 #include "trinityd.h" 27 #include "trinity_dpm.h" 28 #include "ppsmc.h" 29 30 static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id) 31 { 32 int i; 33 u32 v = 0; 34 35 WREG32(SMC_MESSAGE_0, id); 36 for (i = 0; i < rdev->usec_timeout; i++) { 37 if (RREG32(SMC_RESP_0) != 0) 38 break; 39 udelay(1); 40 } 41 v = RREG32(SMC_RESP_0); 42 43 if (v != 1) { 44 if (v == 0xFF) { 45 DRM_ERROR("SMC failed to handle the message!\n"); 46 return -EINVAL; 47 } else if (v == 0xFE) { 48 DRM_ERROR("Unknown SMC message!\n"); 49 return -EINVAL; 50 } 51 } 52 53 return 0; 54 } 55 56 int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable) 57 { 58 if (enable) 59 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM); 60 else 61 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM); 62 } 63 64 int trinity_dpm_config(struct radeon_device *rdev, bool enable) 65 { 66 if (enable) 67 WREG32_SMC(SMU_SCRATCH0, 1); 68 else 69 WREG32_SMC(SMU_SCRATCH0, 0); 70 71 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config); 72 } 73 74 int trinity_dpm_force_state(struct radeon_device *rdev, u32 n) 75 { 76 WREG32_SMC(SMU_SCRATCH0, n); 77 78 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState); 79 } 80 81 int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n) 82 { 83 WREG32_SMC(SMU_SCRATCH0, n); 84 85 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled); 86 } 87 88 int trinity_uvd_dpm_config(struct radeon_device *rdev) 89 { 90 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config); 91 } 92 93 int trinity_dpm_no_forced_level(struct radeon_device *rdev) 94 { 95 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel); 96 } 97 98 int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev, 99 bool enable) 100 { 101 if (enable) 102 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment); 103 else 104 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment); 105 } 106 107 int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev) 108 { 109 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config); 110 } 111 112 void trinity_acquire_mutex(struct radeon_device *rdev) 113 { 114 int i; 115 116 WREG32(SMC_INT_REQ, 1); 117 for (i = 0; i < rdev->usec_timeout; i++) { 118 if ((RREG32(SMC_INT_REQ) & 0xffff) == 1) 119 break; 120 udelay(1); 121 } 122 } 123 124 void trinity_release_mutex(struct radeon_device *rdev) 125 { 126 WREG32(SMC_INT_REQ, 0); 127 } 128