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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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88
ArmPkg/Include/Protocol/ArmScmiPerformanceProtocol.h
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@@ -79,8 +79,58 @@ typedef struct {
UINT32 RangeMin;
} SCMI_PERFORMANCE_LIMITS;
/// Doorbell Support bit.
#define SCMI_PERF_FC_ATTRIB_HAS_DOORBELL BIT0
/// Performance protocol describe fastchannel
typedef struct {
/// Attributes.
UINT32 Attributes;
/// Rate limit.
UINT32 RateLimit;
/// Lower 32 bits of the FastChannel address.
UINT32 ChanAddrLow;
/// Higher 32 bits of the FastChannel address.
UINT32 ChanAddrHigh;
/// Size of the FastChannel in bytes.
UINT32 ChanSize;
/// Lower 32 bits of the doorbell address.
UINT32 DoorbellAddrLow;
/// Higher 32 bits of the doorbell address.
UINT32 DoorbellAddrHigh;
/// Mask of lower 32 bits to set when writing to the doorbell register.
UINT32 DoorbellSetMaskLow;
/// Mask of higher 32 bits to set when writing to the doorbell register.
UINT32 DoorbellSetMaskHigh;
/// Mask of lower 32 bits to preserve when writing to the doorbell register.
UINT32 DoorbellPreserveMaskLow;
/// Mask of higher 32 bits to preserve when writing to the doorbell register.
UINT32 DoorbellPreserveMaskHigh;
} SCMI_PERFORMANCE_FASTCHANNEL;
#pragma pack()
/// SCMI Message Ids for the Performance Protocol.
typedef enum {
ScmiMessageIdPerformanceDomainAttributes = 0x3,
ScmiMessageIdPerformanceDescribeLevels = 0x4,
ScmiMessageIdPerformanceLimitsSet = 0x5,
ScmiMessageIdPerformanceLimitsGet = 0x6,
ScmiMessageIdPerformanceLevelSet = 0x7,
ScmiMessageIdPerformanceLevelGet = 0x8,
ScmiMessageIdPerformanceDescribeFastchannel = 0xB,
} SCMI_MESSAGE_ID_PERFORMANCE;
/** Return version of the performance management protocol supported by SCP.
firmware.
@@ -238,6 +288,34 @@ EFI_STATUS
OUT UINT32 *Level
);
/** 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.
**/
typedef
EFI_STATUS
(EFIAPI *SCMI_PERFORMANCE_DESCRIBE_FASTCHANNEL)(
IN SCMI_PERFORMANCE_PROTOCOL *This,
IN UINT32 DomainId,
IN SCMI_MESSAGE_ID_PERFORMANCE MessageId,
OUT SCMI_PERFORMANCE_FASTCHANNEL *FastChannel
);
typedef struct _SCMI_PERFORMANCE_PROTOCOL {
SCMI_PERFORMANCE_GET_VERSION GetVersion;
SCMI_PERFORMANCE_GET_ATTRIBUTES GetProtocolAttributes;
@@ -247,15 +325,7 @@ typedef struct _SCMI_PERFORMANCE_PROTOCOL {
SCMI_PERFORMANCE_LIMITS_GET LimitsGet;
SCMI_PERFORMANCE_LEVEL_SET LevelSet;
SCMI_PERFORMANCE_LEVEL_GET LevelGet;
SCMI_PERFORMANCE_DESCRIBE_FASTCHANNEL DescribeFastchannel;
} 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_ */