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