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259 lines
8.6 KiB
C
259 lines
8.6 KiB
C
/** @file
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Copyright (c) 2017-2021, Arm Limited. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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System Control and Management Interface V1.0
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http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/
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DEN0056A_System_Control_and_Management_Interface.pdf
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**/
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#ifndef ARM_SCMI_PERFORMANCE_PROTOCOL_H_
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#define ARM_SCMI_PERFORMANCE_PROTOCOL_H_
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#include <Protocol/ArmScmi.h>
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#define PERFORMANCE_PROTOCOL_VERSION 0x10000
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#define ARM_SCMI_PERFORMANCE_PROTOCOL_GUID { \
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0x9b8ba84, 0x3dd3, 0x49a6, {0xa0, 0x5a, 0x31, 0x34, 0xa5, 0xf0, 0x7b, 0xad} \
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}
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extern EFI_GUID gArmScmiPerformanceProtocolGuid;
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typedef struct _SCMI_PERFORMANCE_PROTOCOL SCMI_PERFORMANCE_PROTOCOL;
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#pragma pack(1)
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#define POWER_IN_MW_SHIFT 16
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#define POWER_IN_MW_MASK 0x1
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#define NUM_PERF_DOMAINS_MASK 0xFFFF
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// Total number of performance domains, Attr Bits [15:0]
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#define SCMI_PERF_TOTAL_DOMAINS(Attr) (Attr & NUM_PERF_DOMAINS_MASK)
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// A flag to express power values in mW or platform specific way, Attr Bit [16]
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#define SCMI_PERF_POWER_IN_MW(Attr) ((Attr >> POWER_IN_MW_SHIFT) & \
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POWER_IN_MW_MASK)
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// Performance protocol attributes return values.
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typedef struct {
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UINT32 Attributes;
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UINT64 StatisticsAddress;
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UINT32 StatisticsLen;
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} SCMI_PERFORMANCE_PROTOCOL_ATTRIBUTES;
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#define SCMI_PERF_SUPPORT_LVL_CHANGE_NOTIFY(Attr) ((Attr >> 28) & 0x1)
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#define SCMI_PERF_SUPPORT_LIM_CHANGE_NOTIFY(Attr) ((Attr >> 29) & 0x1)
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#define SCMI_PERF_SUPPORT_SET_LVL(Attr) ((Attr >> 30) & 0x1)
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#define SCMI_PERF_SUPPORT_SET_LIM(Attr) ((Attr >> 31) & 0x1)
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#define SCMI_PERF_RATE_LIMIT(RateLimit) (RateLimit & 0xFFF)
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// Performance protocol domain attributes.
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typedef struct {
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UINT32 Attributes;
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UINT32 RateLimit;
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UINT32 SustainedFreq;
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UINT32 SustainedPerfLevel;
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UINT8 Name[SCMI_MAX_STR_LEN];
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} SCMI_PERFORMANCE_DOMAIN_ATTRIBUTES;
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// Worst case latency in microseconds, Bits[15:0]
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#define PERF_LATENCY_MASK 0xFFFF
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#define SCMI_PERFORMANCE_PROTOCOL_LATENCY(Latency) (Latency & PERF_LATENCY_MASK)
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// Performance protocol performance level.
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typedef struct {
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UINT32 Level;
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UINT32 PowerCost;
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UINT32 Latency;
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} SCMI_PERFORMANCE_LEVEL;
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// Performance protocol performance limit.
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typedef struct {
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UINT32 RangeMax;
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UINT32 RangeMin;
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} SCMI_PERFORMANCE_LIMITS;
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#pragma pack()
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/** Return version of the performance management protocol supported by SCP.
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firmware.
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@param[in] This A Pointer to SCMI_PERFORMANCE_PROTOCOL Instance.
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@param[out] Version Version of the supported SCMI performance management
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protocol.
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@retval EFI_SUCCESS The version is returned.
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@retval EFI_DEVICE_ERROR SCP returns an SCMI error.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *SCMI_PERFORMANCE_GET_VERSION)(
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IN SCMI_PERFORMANCE_PROTOCOL *This,
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OUT UINT32 *Version
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);
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/** Return protocol attributes of the performance management protocol.
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@param[in] This A Pointer to SCMI_PERFORMANCE_PROTOCOL Instance.
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@param[out] Attributes Protocol attributes.
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@retval EFI_SUCCESS Protocol attributes are returned.
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@retval EFI_DEVICE_ERROR SCP returns an SCMI error.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *SCMI_PERFORMANCE_GET_ATTRIBUTES)(
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IN SCMI_PERFORMANCE_PROTOCOL *This,
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OUT SCMI_PERFORMANCE_PROTOCOL_ATTRIBUTES *Attributes
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);
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/** Return performance domain attributes.
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@param[in] This A Pointer to SCMI_PERFORMANCE_PROTOCOL Instance.
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@param[in] DomainId Identifier for the performance domain.
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@param[out] Attributes Performance domain attributes.
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@retval EFI_SUCCESS Domain attributes are returned.
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@retval EFI_DEVICE_ERROR SCP returns an SCMI error.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *SCMI_PERFORMANCE_GET_DOMAIN_ATTRIBUTES)(
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IN SCMI_PERFORMANCE_PROTOCOL *This,
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IN UINT32 DomainId,
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OUT SCMI_PERFORMANCE_DOMAIN_ATTRIBUTES *DomainAttributes
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);
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/** Return list of performance domain levels of a given domain.
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@param[in] This A Pointer to SCMI_PERFORMANCE_PROTOCOL Instance.
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@param[in] DomainId Identifier for the performance domain.
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@param[out] NumLevels Total number of levels a domain can support.
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@param[in,out] LevelArraySize Size of the performance level array.
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@param[out] LevelArray Array of the performance levels.
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@retval EFI_SUCCESS Domain levels are returned.
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@retval EFI_DEVICE_ERROR SCP returns an SCMI error.
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@retval EFI_BUFFER_TOO_SMALL LevelArraySize is too small for the result.
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It has been updated to the size needed.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *SCMI_PERFORMANCE_DESCRIBE_LEVELS)(
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IN SCMI_PERFORMANCE_PROTOCOL *This,
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IN UINT32 DomainId,
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OUT UINT32 *NumLevels,
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IN OUT UINT32 *LevelArraySize,
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OUT SCMI_PERFORMANCE_LEVEL *LevelArray
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);
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/** Set performance limits of a domain.
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@param[in] This A Pointer to SCMI_PERFORMANCE_PROTOCOL Instance.
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@param[in] DomainId Identifier for the performance domain.
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@param[in] Limit Performance limit to set.
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@retval EFI_SUCCESS Performance limits set successfully.
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@retval EFI_DEVICE_ERROR SCP returns an SCMI error.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *SCMI_PERFORMANCE_LIMITS_SET)(
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IN SCMI_PERFORMANCE_PROTOCOL *This,
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IN UINT32 DomainId,
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IN SCMI_PERFORMANCE_LIMITS *Limits
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);
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/** Get performance limits of a domain.
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@param[in] This A Pointer to SCMI_PERFORMANCE_PROTOCOL Instance.
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@param[in] DomainId Identifier for the performance domain.
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@param[out] Limit Performance Limits of the domain.
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@retval EFI_SUCCESS Performance limits are returned.
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@retval EFI_DEVICE_ERROR SCP returns an SCMI error.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *SCMI_PERFORMANCE_LIMITS_GET)(
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SCMI_PERFORMANCE_PROTOCOL *This,
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UINT32 DomainId,
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SCMI_PERFORMANCE_LIMITS *Limits
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);
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/** Set performance level of a domain.
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@param[in] This A Pointer to SCMI_PERFORMANCE_PROTOCOL Instance.
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@param[in] DomainId Identifier for the performance domain.
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@param[in] Level Performance level of the domain.
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@retval EFI_SUCCESS Performance level set successfully.
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@retval EFI_DEVICE_ERROR SCP returns an SCMI error.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *SCMI_PERFORMANCE_LEVEL_SET)(
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IN SCMI_PERFORMANCE_PROTOCOL *This,
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IN UINT32 DomainId,
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IN UINT32 Level
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);
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/** Get performance level of a domain.
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@param[in] This A Pointer to SCMI_PERFORMANCE_PROTOCOL Instance.
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@param[in] DomainId Identifier for the performance domain.
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@param[out] Level Performance level of the domain.
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@retval EFI_SUCCESS Performance level got successfully.
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@retval EFI_DEVICE_ERROR SCP returns an SCMI error.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *SCMI_PERFORMANCE_LEVEL_GET)(
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IN SCMI_PERFORMANCE_PROTOCOL *This,
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IN UINT32 DomainId,
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OUT UINT32 *Level
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);
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typedef struct _SCMI_PERFORMANCE_PROTOCOL {
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SCMI_PERFORMANCE_GET_VERSION GetVersion;
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SCMI_PERFORMANCE_GET_ATTRIBUTES GetProtocolAttributes;
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SCMI_PERFORMANCE_GET_DOMAIN_ATTRIBUTES GetDomainAttributes;
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SCMI_PERFORMANCE_DESCRIBE_LEVELS DescribeLevels;
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SCMI_PERFORMANCE_LIMITS_SET LimitsSet;
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SCMI_PERFORMANCE_LIMITS_GET LimitsGet;
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SCMI_PERFORMANCE_LEVEL_SET LevelSet;
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SCMI_PERFORMANCE_LEVEL_GET LevelGet;
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} SCMI_PERFORMANCE_PROTOCOL;
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typedef enum {
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ScmiMessageIdPerformanceDomainAttributes = 0x3,
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ScmiMessageIdPerformanceDescribeLevels = 0x4,
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ScmiMessageIdPerformanceLimitsSet = 0x5,
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ScmiMessageIdPerformanceLimitsGet = 0x6,
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ScmiMessageIdPerformanceLevelSet = 0x7,
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ScmiMessageIdPerformanceLevelGet = 0x8,
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} SCMI_MESSAGE_ID_PERFORMANCE;
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#endif /* ARM_SCMI_PERFORMANCE_PROTOCOL_H_ */
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