DynamicTablesPkg/Include/AmlCpcInfo.h

   1 /** @file
   2
   3   Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.<BR>
   4
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6 **/
   7
   8 #ifndef AML_CPC_INFO_H_
   9 #define AML_CPC_INFO_H_
  10
  11 #include <IndustryStandard/Acpi.h>
  12
  13 #pragma pack(1)
  14
  15 /** A structure that describes the Cpc information.
  16
  17   Continuous Performance Control is described in DSDT/SSDT and associated
  18   to cpus/clusters in the cpu topology.
  19
  20   Unsupported Optional registers should be encoded with NULL resource
  21   Register {(SystemMemory, 0, 0, 0, 0)}
  22
  23   For values that support Integer or Buffer, integer will be used
  24   if buffer is NULL resource.
  25   If resource is not NULL then Integer must be 0
  26
  27   Cf. ACPI 6.4, s8.4.7.1 _CPC (Continuous Performance Control)
  28
  29 **/
  30
  31 typedef struct AmlCpcInfo {
  32   /// The revision number of the _CPC package format.
  33   UINT32                                    Revision;
  34
  35   /// Indicates the highest level of performance the processor
  36   /// is theoretically capable of achieving.
  37   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    HighestPerformanceBuffer;
  38   UINT32                                    HighestPerformanceInteger;
  39
  40   /// Indicates the highest sustained performance level of the processor.
  41   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    NominalPerformanceBuffer;
  42   UINT32                                    NominalPerformanceInteger;
  43
  44   /// Indicates the lowest performance level of the processor with non-linear power savings.
  45   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    LowestNonlinearPerformanceBuffer;
  46   UINT32                                    LowestNonlinearPerformanceInteger;
  47
  48   /// Indicates the lowest performance level of the processor..
  49   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    LowestPerformanceBuffer;
  50   UINT32                                    LowestPerformanceInteger;
  51
  52   /// Guaranteed Performance Register Buffer.
  53   /// Optional
  54   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    GuaranteedPerformanceRegister;
  55
  56   /// Desired Performance Register Buffer.
  57   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    DesiredPerformanceRegister;
  58
  59   /// Minimum Performance Register Buffer.
  60   /// Optional
  61   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    MinimumPerformanceRegister;
  62
  63   /// Maximum Performance Register Buffer.
  64   /// Optional
  65   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    MaximumPerformanceRegister;
  66
  67   /// Performance Reduction Tolerance Register.
  68   /// Optional
  69   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    PerformanceReductionToleranceRegister;
  70
  71   /// Time Window Register.
  72   /// Optional
  73   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    TimeWindowRegister;
  74
  75   /// Counter Wraparound Time
  76   /// Optional
  77   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    CounterWraparoundTimeBuffer;
  78   UINT32                                    CounterWraparoundTimeInteger;
  79
  80   /// Reference Performance Counter Register
  81   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    ReferencePerformanceCounterRegister;
  82
  83   /// Delivered Performance Counter Register
  84   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    DeliveredPerformanceCounterRegister;
  85
  86   /// Performance Limited Register
  87   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    PerformanceLimitedRegister;
  88
  89   /// CPPC EnableRegister
  90   /// Optional
  91   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    CPPCEnableRegister;
  92
  93   /// Autonomous Selection Enable
  94   /// Optional
  95   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    AutonomousSelectionEnableBuffer;
  96   UINT32                                    AutonomousSelectionEnableInteger;
  97
  98   /// AutonomousActivity-WindowRegister
  99   /// Optional
 100   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    AutonomousActivityWindowRegister;
 101
 102   /// EnergyPerformance-PreferenceRegister
 103   /// Optional
 104   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    EnergyPerformancePreferenceRegister;
 105
 106   /// Reference Performance
 107   /// Optional
 108   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    ReferencePerformanceBuffer;
 109   UINT32                                    ReferencePerformanceInteger;
 110
 111   /// Lowest Frequency
 112   /// Optional
 113   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    LowestFrequencyBuffer;
 114   UINT32                                    LowestFrequencyInteger;
 115
 116   /// Nominal Frequency
 117   /// Optional
 118   EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE    NominalFrequencyBuffer;
 119   UINT32                                    NominalFrequencyInteger;
 120 } AML_CPC_INFO;
 121
 122 #pragma pack()
 123
 124 #endif //AML_CPC_INFO_H_