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1/*2 * Copyright 2012 Advanced Micro Devices, Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * 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 29static 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 55int 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 else60 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM);61}62 63int trinity_dpm_config(struct radeon_device *rdev, bool enable)64{65 if (enable)66 WREG32_SMC(SMU_SCRATCH0, 1);67 else68 WREG32_SMC(SMU_SCRATCH0, 0);69 70 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config);71}72 73int 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 80int 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 87int trinity_uvd_dpm_config(struct radeon_device *rdev)88{89 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config);90}91 92int trinity_dpm_no_forced_level(struct radeon_device *rdev)93{94 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel);95}96 97int 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 else103 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment);104}105 106int 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 111void 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 123void trinity_release_mutex(struct radeon_device *rdev)124{125 WREG32(SMC_INT_REQ, 0);126}127