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