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