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ArmPkg/ArmScmiDxe: Add PERFORMANCE_DESCRIBE_FASTCHANNEL support

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The PERFORMANCE_DESCRIBE_FASTCHANNEL Scmi command is available
since SCMI v2.0 and allows to query information about the supported
fast-channels of the Scmi performance protocol.
Add support for this command.

Also move SCMI_MESSAGE_ID_PERFORMANCE enum definition up in the file
to use it in SCMI_PERFORMANCE_DESCRIBE_FASTCHANNEL function
declaration.

Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
This commit is contained in:
Pierre Gondois
2024-01-25 16:18:41 +01:00
committed by mergify[bot]
parent 3630cdf6e7
commit 9f0ebabb57
2 changed files with 154 additions and 14 deletions
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80
ArmPkg/Drivers/ArmScmiDxe/ScmiPerformanceProtocol.c
View File

@@ -1,12 +1,12 @@
/** @file
Copyright (c) 2017-2021, Arm Limited. All rights reserved.<BR>
Copyright (c) 2017-2023, Arm Limited. All rights reserved.<BR>
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
System Control and Management Interface V3.2, latest version at:
- https://developer.arm.com/documentation/den0056/latest/
**/
#include <Library/BaseMemoryLib.h>
@@ -416,6 +416,75 @@ PerformanceLevelGet (
return EFI_SUCCESS;
}
/** Discover the attributes of the FastChannel for the specified
performance domain and the specified message.
@param[in] This A Pointer to SCMI_PERFORMANCE_PROTOCOL Instance.
@param[in] DomainId Identifier for the performance domain.
@param[in] MessageId Message Id of the FastChannel to discover.
Must be one of:
- PERFORMANCE_LIMITS_SET
- PERFORMANCE_LIMITS_GET
- PERFORMANCE_LEVEL_SET
- PERFORMANCE_LEVEL_GET
@param[out] FastChannel If success, contains the FastChannel description.
@retval EFI_SUCCESS Performance level got successfully.
@retval EFI_DEVICE_ERROR SCP returns an SCMI error.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_TIMEOUT Time out.
@retval EFI_UNSUPPORTED Unsupported.
**/
EFI_STATUS
DescribeFastchannel (
IN SCMI_PERFORMANCE_PROTOCOL *This,
IN UINT32 DomainId,
IN SCMI_MESSAGE_ID_PERFORMANCE MessageId,
OUT SCMI_PERFORMANCE_FASTCHANNEL *FastChannel
)
{
EFI_STATUS Status;
SCMI_COMMAND Cmd;
UINT32 PayloadLength;
UINT32 *ReturnValues;
UINT32 *MessageParams;
if ((This == NULL) ||
(FastChannel == NULL))
{
return EFI_INVALID_PARAMETER;
}
Status = ScmiCommandGetPayload (&MessageParams);
if (EFI_ERROR (Status)) {
return Status;
}
*MessageParams++ = DomainId;
*MessageParams = MessageId;
Cmd.ProtocolId = ScmiProtocolIdPerformance;
Cmd.MessageId = ScmiMessageIdPerformanceDescribeFastchannel;
PayloadLength = sizeof (DomainId) + sizeof (MessageId);
Status = ScmiCommandExecute (
&Cmd,
&PayloadLength,
&ReturnValues
);
if (EFI_ERROR (Status)) {
return Status;
}
CopyMem (
FastChannel,
ReturnValues,
sizeof (SCMI_PERFORMANCE_FASTCHANNEL)
);
return Status;
}
// Instance of the SCMI performance management protocol.
STATIC CONST SCMI_PERFORMANCE_PROTOCOL PerformanceProtocol = {
PerformanceGetVersion,
@@ -425,7 +494,8 @@ STATIC CONST SCMI_PERFORMANCE_PROTOCOL PerformanceProtocol = {
PerformanceLimitsSet,
PerformanceLimitsGet,
PerformanceLevelSet,
PerformanceLevelGet
PerformanceLevelGet,
DescribeFastchannel,
};
/** Initialize performance management protocol and install on a given Handle.