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/** @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_PRIVATE_H_
#define ARM_SCMI_PERFORMANCE_PROTOCOL_PRIVATE_H_
#include <Protocol/ArmScmiPerformanceProtocol.h>
// Number of performance levels returned by a call to the SCP, Lvls Bits[11:0]
#define NUM_PERF_LEVELS_MASK 0x0FFF
#define NUM_PERF_LEVELS(Lvls) (Lvls & NUM_PERF_LEVELS_MASK)
// Number of performance levels remaining after a call to the SCP, Lvls Bits[31:16]
#define NUM_REMAIN_PERF_LEVELS_SHIFT 16
#define NUM_REMAIN_PERF_LEVELS(Lvls) (Lvls >> NUM_REMAIN_PERF_LEVELS_SHIFT)
/** Return values for ScmiMessageIdPerformanceDescribeLevels command.
SCMI Spec section 4.5.2.5
**/
typedef struct {
UINT32 NumLevels;
// NOTE: Since EDK2 does not allow flexible array member [] we declare
// here array of 1 element length. However below is used as a variable
// length array.
SCMI_PERFORMANCE_LEVEL PerfLevel[1]; // Offset to array of performance levels
} PERF_DESCRIBE_LEVELS;
/** Initialize performance management protocol and install on a given Handle.
@param[in] Handle Handle to install performance management
protocol.
@retval EFI_SUCCESS Performance protocol installed successfully.
**/
EFI_STATUS
ScmiPerformanceProtocolInit (
IN EFI_HANDLE* Handle
);
#endif /* ARM_SCMI_PERFORMANCE_PROTOCOL_PRIVATE_H_ */
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