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DynamicTablesPkg: SSDT CPU _CPC generator 

Add code to use a token attached to GICC to generate _CPC object on cpus.

Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
This commit is contained in:
Jeff Brasen 2022-09-22 14:36:46 -06:00 committed by mergify[bot]
parent 58350c0055
commit 2500ce1011
1 changed files with 127 additions and 6 deletions
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123
DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyGenerator.c
View File

@ -76,6 +76,16 @@ GET_OBJECT_LIST (
CM_ARM_LPI_INFO
);
/**
This macro expands to a function that retrieves the CPC
information from the Configuration Manager.
*/
GET_OBJECT_LIST (
EObjNameSpaceArm,
EArmObjCpcInfo,
CM_ARM_CPC_INFO
);
/** Initialize the TokenTable.
One entry should be allocated for each CM_ARM_PROC_HIERARCHY_INFO
@ -229,6 +239,93 @@ WriteAslName (
return EFI_SUCCESS;
}
/** Create and add an _CPC Node to Cpu Node.
For instance, transform an AML node from:
Device (C002)
{
Name (_UID, 2)
Name (_HID, "ACPI0007")
}
To:
Device (C002)
{
Name (_UID, 2)
Name (_HID, "ACPI0007")
Name(_CPC, Package()
{
NumEntries, // Integer
Revision, // Integer
HighestPerformance, // Integer or Buffer (Resource Descriptor)
NominalPerformance, // Integer or Buffer (Resource Descriptor)
LowestNonlinearPerformance, // Integer or Buffer (Resource Descriptor)
LowestPerformance, // Integer or Buffer (Resource Descriptor)
GuaranteedPerformanceRegister, // Buffer (Resource Descriptor)
DesiredPerformanceRegister , // Buffer (Resource Descriptor)
MinimumPerformanceRegister , // Buffer (Resource Descriptor)
MaximumPerformanceRegister , // Buffer (Resource Descriptor)
PerformanceReductionToleranceRegister, // Buffer (Resource Descriptor)
TimeWindowRegister, // Buffer (Resource Descriptor)
CounterWraparoundTime, // Integer or Buffer (Resource Descriptor)
ReferencePerformanceCounterRegister, // Buffer (Resource Descriptor)
DeliveredPerformanceCounterRegister, // Buffer (Resource Descriptor)
PerformanceLimitedRegister, // Buffer (Resource Descriptor)
CPPCEnableRegister // Buffer (Resource Descriptor)
AutonomousSelectionEnable, // Integer or Buffer (Resource Descriptor)
AutonomousActivityWindowRegister, // Buffer (Resource Descriptor)
EnergyPerformancePreferenceRegister, // Buffer (Resource Descriptor)
ReferencePerformance // Integer or Buffer (Resource Descriptor)
LowestFrequency, // Integer or Buffer (Resource Descriptor)
NominalFrequency // Integer or Buffer (Resource Descriptor)
})
}
@param [in] Generator The SSDT Cpu Topology generator.
@param [in] CfgMgrProtocol Pointer to the Configuration Manager
Protocol Interface.
@param [in] GicCInfo Pointer to the CM_ARM_GICC_INFO object
describing the Cpu.
@param [in] Node CPU Node to which the _CPC node is
attached.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
**/
STATIC
EFI_STATUS
EFIAPI
CreateAmlCpcNode (
IN ACPI_CPU_TOPOLOGY_GENERATOR *Generator,
IN CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL *CONST CfgMgrProtocol,
IN CM_ARM_GICC_INFO *GicCInfo,
IN AML_OBJECT_NODE_HANDLE *Node
)
{
EFI_STATUS Status;
CM_ARM_CPC_INFO *CpcInfo;
Status = GetEArmObjCpcInfo (
CfgMgrProtocol,
GicCInfo->CpcToken,
&CpcInfo,
NULL
);
if (EFI_ERROR (Status)) {
ASSERT (0);
return Status;
}
Status = AmlCreateCpcNode (
CpcInfo,
Node,
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
}
/** Create and add an _LPI method to Cpu/Cluster Node.
For instance, transform an AML node from:
@ -581,7 +678,20 @@ CreateAmlCpuFromProcHierarchy (
// CM_ARM_PROC_HIERARCHY_INFO, create an _LPI method returning them.
if (ProcHierarchyNodeInfo->LpiToken != CM_NULL_TOKEN) {
Status = CreateAmlLpiMethod (Generator, ProcHierarchyNodeInfo, CpuNode);
if (EFI_ERROR (Status)) {
ASSERT_EFI_ERROR (Status);
return Status;
}
}
// If a CPC info is associated with the
// GicCinfo, create an _CPC method returning them.
if (GicCInfo->CpcToken != CM_NULL_TOKEN) {
Status = CreateAmlCpcNode (Generator, CfgMgrProtocol, GicCInfo, CpuNode);
if (EFI_ERROR (Status)) {
ASSERT_EFI_ERROR (Status);
return Status;
}
}
return Status;
@ -938,6 +1048,7 @@ CreateTopologyFromGicC (
CM_ARM_GICC_INFO *GicCInfo;
UINT32 GicCInfoCount;
UINT32 Index;
AML_OBJECT_NODE_HANDLE CpuNode;
ASSERT (Generator != NULL);
ASSERT (CfgMgrProtocol != NULL);
@ -961,12 +1072,22 @@ CreateTopologyFromGicC (
ScopeNode,
&GicCInfo[Index],
Index,
NULL
&CpuNode
);
if (EFI_ERROR (Status)) {
ASSERT (0);
break;
}
// If a CPC info is associated with the
// GicCinfo, create an _CPC method returning them.
if (GicCInfo->CpcToken != CM_NULL_TOKEN) {
Status = CreateAmlCpcNode (Generator, CfgMgrProtocol, &GicCInfo[Index], CpuNode);
if (EFI_ERROR (Status)) {
ASSERT_EFI_ERROR (Status);
break;
}
}
} // for
return Status;