--- /dev/null
+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef VEGA20_PP_SMC_H
+#define VEGA20_PP_SMC_H
+
+#pragma pack(push, 1)
+
+// SMU Response Codes:
+#define PPSMC_Result_OK 0x1
+#define PPSMC_Result_Failed 0xFF
+#define PPSMC_Result_UnknownCmd 0xFE
+#define PPSMC_Result_CmdRejectedPrereq 0xFD
+#define PPSMC_Result_CmdRejectedBusy 0xFC
+
+// Message Definitions:
+#define PPSMC_MSG_TestMessage 0x1
+#define PPSMC_MSG_GetSmuVersion 0x2
+#define PPSMC_MSG_GetDriverIfVersion 0x3
+#define PPSMC_MSG_SetAllowedFeaturesMaskLow 0x4
+#define PPSMC_MSG_SetAllowedFeaturesMaskHigh 0x5
+#define PPSMC_MSG_EnableAllSmuFeatures 0x6
+#define PPSMC_MSG_DisableAllSmuFeatures 0x7
+#define PPSMC_MSG_EnableSmuFeaturesLow 0x8
+#define PPSMC_MSG_EnableSmuFeaturesHigh 0x9
+#define PPSMC_MSG_DisableSmuFeaturesLow 0xA
+#define PPSMC_MSG_DisableSmuFeaturesHigh 0xB
+#define PPSMC_MSG_GetEnabledSmuFeaturesLow 0xC
+#define PPSMC_MSG_GetEnabledSmuFeaturesHigh 0xD
+#define PPSMC_MSG_SetWorkloadMask 0xE
+#define PPSMC_MSG_SetPptLimit 0xF
+#define PPSMC_MSG_SetDriverDramAddrHigh 0x10
+#define PPSMC_MSG_SetDriverDramAddrLow 0x11
+#define PPSMC_MSG_SetToolsDramAddrHigh 0x12
+#define PPSMC_MSG_SetToolsDramAddrLow 0x13
+#define PPSMC_MSG_TransferTableSmu2Dram 0x14
+#define PPSMC_MSG_TransferTableDram2Smu 0x15
+#define PPSMC_MSG_UseDefaultPPTable 0x16
+#define PPSMC_MSG_UseBackupPPTable 0x17
+#define PPSMC_MSG_RunBtc 0x18
+#define PPSMC_MSG_RequestI2CBus 0x19
+#define PPSMC_MSG_ReleaseI2CBus 0x1A
+#define PPSMC_MSG_SetFloorSocVoltage 0x21
+#define PPSMC_MSG_SoftReset 0x22
+#define PPSMC_MSG_StartBacoMonitor 0x23
+#define PPSMC_MSG_CancelBacoMonitor 0x24
+#define PPSMC_MSG_EnterBaco 0x25
+#define PPSMC_MSG_SetSoftMinByFreq 0x26
+#define PPSMC_MSG_SetSoftMaxByFreq 0x27
+#define PPSMC_MSG_SetHardMinByFreq 0x28
+#define PPSMC_MSG_SetHardMaxByFreq 0x29
+#define PPSMC_MSG_GetMinDpmFreq 0x2A
+#define PPSMC_MSG_GetMaxDpmFreq 0x2B
+#define PPSMC_MSG_GetDpmFreqByIndex 0x2C
+#define PPSMC_MSG_GetDpmClockFreq 0x2D
+#define PPSMC_MSG_GetSsVoltageByDpm 0x2E
+#define PPSMC_MSG_SetMemoryChannelConfig 0x2F
+#define PPSMC_MSG_SetGeminiMode 0x30
+#define PPSMC_MSG_SetGeminiApertureHigh 0x31
+#define PPSMC_MSG_SetGeminiApertureLow 0x32
+#define PPSMC_MSG_SetMinLinkDpmByIndex 0x33
+#define PPSMC_MSG_OverridePcieParameters 0x34
+#define PPSMC_MSG_OverDriveSetPercentage 0x35
+#define PPSMC_MSG_SetMinDeepSleepDcefclk 0x36
+#define PPSMC_MSG_ReenableAcDcInterrupt 0x37
+#define PPSMC_MSG_NotifyPowerSource 0x38
+#define PPSMC_MSG_SetUclkFastSwitch 0x39
+#define PPSMC_MSG_SetUclkDownHyst 0x3A
+//#define PPSMC_MSG_GfxDeviceDriverReset 0x3B
+#define PPSMC_MSG_GetCurrentRpm 0x3C
+#define PPSMC_MSG_SetVideoFps 0x3D
+#define PPSMC_MSG_SetTjMax 0x3E
+#define PPSMC_MSG_SetFanTemperatureTarget 0x3F
+#define PPSMC_MSG_PrepareMp1ForUnload 0x40
+#define PPSMC_MSG_DramLogSetDramAddrHigh 0x41
+#define PPSMC_MSG_DramLogSetDramAddrLow 0x42
+#define PPSMC_MSG_DramLogSetDramSize 0x43
+#define PPSMC_MSG_SetFanMaxRpm 0x44
+#define PPSMC_MSG_SetFanMinPwm 0x45
+#define PPSMC_MSG_ConfigureGfxDidt 0x46
+#define PPSMC_MSG_NumOfDisplays 0x47
+#define PPSMC_MSG_RemoveMargins 0x48
+#define PPSMC_MSG_ReadSerialNumTop32 0x49
+#define PPSMC_MSG_ReadSerialNumBottom32 0x4A
+#define PPSMC_MSG_SetSystemVirtualDramAddrHigh 0x4B
+#define PPSMC_MSG_SetSystemVirtualDramAddrLow 0x4C
+#define PPSMC_MSG_WaflTest 0x4D
+// Unused ID 0x4E to 0x50
+#define PPSMC_MSG_AllowGfxOff 0x51
+#define PPSMC_MSG_DisallowGfxOff 0x52
+#define PPSMC_MSG_GetPptLimit 0x53
+#define PPSMC_MSG_GetDcModeMaxDpmFreq 0x54
+#define PPSMC_MSG_GetDebugData 0x55
+#define PPSMC_MSG_SetXgmiMode 0x56
+#define PPSMC_MSG_RunAfllBtc 0x57
+#define PPSMC_MSG_ExitBaco 0x58
+#define PPSMC_MSG_PrepareMp1ForReset 0x59
+#define PPSMC_MSG_PrepareMp1ForShutdown 0x5A
+#define PPSMC_MSG_SetMGpuFanBoostLimitRpm 0x5D
+#define PPSMC_Message_Count 0x5E
+
+typedef uint32_t PPSMC_Result;
+typedef uint32_t PPSMC_Msg;
+
+#pragma pack(pop)
+
+#endif