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/*++
Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
EnhancedSpeedstep.h
Abstract:
Enhanced Speedstep protocol
The Enhanced Speedstep Protocol support.
**/
#ifndef _ENHANCED_SPEEDSTEP_H_
#define _ENHANCED_SPEEDSTEP_H_
#define ENHANCED_SPEEDSTEP_PROTOCOL_GUID \
{ \
0x91a1ddcf, 0x5374, 0x4939, 0x89, 0x51, 0xd7, 0x29, 0x3f, 0x1a, 0x78, 0x6f \
}
typedef struct _ENHANCED_SPEEDSTEP_PROTOCOL ENHANCED_SPEEDSTEP_PROTOCOL;
typedef struct {
UINT8 Version; // EIST State format
UINT8 Size; // Size of element
UINT32 RatioStep; // Step
UINT32 MinRatio; // Calculated min ratio
UINT32 MaxRatio; // Calculated max ratio
UINT32 MinCoreFreq; // Calculated min freq
UINT32 MaxCoreFreq; // Calculated max freq
UINT32 MinPower; // Calculated min power
UINT32 MaxPower; // Calculated max power
UINT32 NumStates; // Number of states
} EIST_INFORMATION;
typedef struct {
UINT32 CoreFrequency;
UINT32 Power;
UINT32 TransitionLatency;
UINT32 BusMasterLatency;
UINT32 Control;
UINT32 Status;
} EFI_ACPI_CPU_PSS_STATE;
typedef
EFI_STATUS
(EFIAPI *GET_EIST_TABLE) (
IN ENHANCED_SPEEDSTEP_PROTOCOL *This,
OUT EIST_INFORMATION **EistInformation,
OUT VOID **PssStates
);
struct _ENHANCED_SPEEDSTEP_PROTOCOL {
UINT32 ProcApicId;
GET_EIST_TABLE GetEistTable;
};
//
// There will be an instance of this protocol for every processor
// in the system. ProcNumber is used to manage all the different
// processors in the system and passed into the MP protocol
// to run code streams on application processors
//
extern EFI_GUID gEnhancedSpeedstepProtocolGuid;
#endif
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