DynamicTablesPkg: Add CM_ARM_CPC_INFO object
Introduce the CM_ARM_CPC_INFO CmObj in the ArmNameSpaceObjects. This allows to describe CPC information, as described in ACPI 6.4, s8.4.7.1 "_CPC (Continuous Performance Control)". Signed-off-by: Jeff Brasen <jbrasen@nvidia.com> Reviewed-by: Pierre Gondois <pierre.gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
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DynamicTablesPkg/Include/AmlCpcInfo.h
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124
DynamicTablesPkg/Include/AmlCpcInfo.h
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/** @file
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Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef AML_CPC_INFO_H_
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#define AML_CPC_INFO_H_
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#include <IndustryStandard/Acpi.h>
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#pragma pack(1)
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/** A structure that describes the Cpc information.
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Continuous Performance Control is described in DSDT/SSDT and associated
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to cpus/clusters in the cpu topology.
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Unsupported Optional registers should be encoded with NULL resource
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Register {(SystemMemory, 0, 0, 0, 0)}
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For values that support Integer or Buffer, integer will be used
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if buffer is NULL resource.
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If resource is not NULL then Integer must be 0
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Cf. ACPI 6.4, s8.4.7.1 _CPC (Continuous Performance Control)
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**/
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typedef struct AmlCpcInfo {
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/// The revision number of the _CPC package format.
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UINT32 Revision;
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/// Indicates the highest level of performance the processor
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/// is theoretically capable of achieving.
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE HighestPerformanceBuffer;
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UINT32 HighestPerformanceInteger;
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/// Indicates the highest sustained performance level of the processor.
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE NominalPerformanceBuffer;
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UINT32 NominalPerformanceInteger;
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/// Indicates the lowest performance level of the processor with non-linear power savings.
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE LowestNonlinearPerformanceBuffer;
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UINT32 LowestNonlinearPerformanceInteger;
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/// Indicates the lowest performance level of the processor..
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE LowestPerformanceBuffer;
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UINT32 LowestPerformanceInteger;
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/// Guaranteed Performance Register Buffer.
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE GuaranteedPerformanceRegister;
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/// Desired Performance Register Buffer.
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE DesiredPerformanceRegister;
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/// Minimum Performance Register Buffer.
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE MinimumPerformanceRegister;
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/// Maximum Performance Register Buffer.
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE MaximumPerformanceRegister;
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/// Performance Reduction Tolerance Register.
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE PerformanceReductionToleranceRegister;
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/// Time Window Register.
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE TimeWindowRegister;
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/// Counter Wraparound Time
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE CounterWraparoundTimeBuffer;
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UINT32 CounterWraparoundTimeInteger;
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/// Reference Performance Counter Register
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE ReferencePerformanceCounterRegister;
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/// Delivered Performance Counter Register
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE DeliveredPerformanceCounterRegister;
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/// Performance Limited Register
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE PerformanceLimitedRegister;
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/// CPPC EnableRegister
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE CPPCEnableRegister;
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/// Autonomous Selection Enable
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE AutonomousSelectionEnableBuffer;
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UINT32 AutonomousSelectionEnableInteger;
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/// AutonomousActivity-WindowRegister
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE AutonomousActivityWindowRegister;
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/// EnergyPerformance-PreferenceRegister
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE EnergyPerformancePreferenceRegister;
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/// Reference Performance
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE ReferencePerformanceBuffer;
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UINT32 ReferencePerformanceInteger;
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/// Lowest Frequency
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE LowestFrequencyBuffer;
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UINT32 LowestFrequencyInteger;
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/// Nominal Frequency
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/// Optional
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EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE NominalFrequencyBuffer;
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UINT32 NominalFrequencyInteger;
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} AML_CPC_INFO;
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#pragma pack()
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#endif //AML_CPC_INFO_H_
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