From: "Jeff Brasen" <jbrasen@nvidia.com>
To: <devel@edk2.groups.io>
Cc: <ardb+tianocore@kernel.org>, <Alexei.Fedorov@arm.com>,
<pierre.gondois@arm.com>, <nd@arm.com>, <sami.mujawar@arm.com>,
Jeff Brasen <jbrasen@nvidia.com>
Subject: [PATCH v5 2/3] DynamicTablesPkg: AML Code generation to add _CPC entries
Date: Thu, 22 Sep 2022 14:36:45 -0600 [thread overview]
Message-ID: <c642126a7c4a949edf1ece50ec5e72d015d1f584.1663878888.git.jbrasen@nvidia.com> (raw)
In-Reply-To: <cover.1663878888.git.jbrasen@nvidia.com>
_CPC entries can describe CPU performance information.
The object is described in ACPI 6.4 s8.4.7.1.
"_CPC (Continuous Performance Control)".
Add AmlCreateCpcNode() helper function to add _CPC entries to an
existing CPU object.
Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
---
.../Include/Library/AmlLib/AmlLib.h | 54 ++
.../Common/AmlLib/CodeGen/AmlCodeGen.c | 475 ++++++++++++++++++
2 files changed, 529 insertions(+)
diff --git a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
index 39968660f2..ebaccba811 100644
--- a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
+++ b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
@@ -37,6 +37,7 @@
*/
#include <IndustryStandard/Acpi.h>
+#include <Library/AmlCpcInfo.h>
#ifndef AML_HANDLE
@@ -1336,6 +1337,59 @@ AmlAddNameIntegerPackage (
IN AML_OBJECT_NODE_HANDLE PackageNode
);
+/** Create a _CPC node.
+
+ Creates and optionally adds the following node
+ 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)
+ })
+
+ If resource buffer is NULL then integer will be used.
+
+ Cf. ACPI 6.4, s8.4.7.1 _CPC (Continuous Performance Control)
+
+ @ingroup CodeGenApis
+
+ @param [in] CpcInfo CpcInfo object
+ @param [in] ParentNode If provided, set ParentNode as the parent
+ of the node created.
+ @param [out] NewCpcNode If success and provided, contains the created node.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_INVALID_PARAMETER Invalid parameter.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+**/
+EFI_STATUS
+EFIAPI
+AmlCreateCpcNode (
+ IN AML_CPC_INFO *CpcInfo,
+ IN AML_NODE_HANDLE ParentNode OPTIONAL,
+ OUT AML_OBJECT_NODE_HANDLE *NewCpcNode OPTIONAL
+ );
+
// DEPRECATED APIS
#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
diff --git a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
index 5fb39d077b..4dc810c034 100644
--- a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
+++ b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
@@ -14,6 +14,7 @@
#include <AmlEncoding/Aml.h>
#include <Api/AmlApiHelper.h>
#include <CodeGen/AmlResourceDataCodeGen.h>
+#include <Library/AmlCpcInfo.h>
#include <Tree/AmlNode.h>
#include <Tree/AmlTree.h>
#include <String/AmlString.h>
@@ -2850,3 +2851,477 @@ error_handler:
return Status;
}
+
+/** Adds a register to the package
+
+ @ingroup CodeGenApis
+
+ @param [in] Register If provided, register that will be added to package.
+ otherwise NULL register will be added
+ @param [in] PackageNode Package to add value to
+
+ @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
+AmlAddRegisterToPackage (
+ IN EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE *Register OPTIONAL,
+ IN AML_OBJECT_NODE_HANDLE PackageNode
+ )
+{
+ EFI_STATUS Status;
+ AML_DATA_NODE_HANDLE RdNode;
+ AML_OBJECT_NODE_HANDLE ResourceTemplateNode;
+
+ RdNode = NULL;
+
+ Status = AmlCodeGenResourceTemplate (&ResourceTemplateNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ return Status;
+ }
+
+ if (Register != NULL) {
+ Status = AmlCodeGenRdRegister (
+ Register->AddressSpaceId,
+ Register->RegisterBitWidth,
+ Register->RegisterBitOffset,
+ Register->Address,
+ Register->AccessSize,
+ NULL,
+ &RdNode
+ );
+ } else {
+ Status = AmlCodeGenRdRegister (
+ EFI_ACPI_6_4_SYSTEM_MEMORY,
+ 0,
+ 0,
+ 0,
+ 0,
+ NULL,
+ &RdNode
+ );
+ }
+
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAppendRdNode (ResourceTemplateNode, RdNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ RdNode = NULL;
+
+ Status = AmlVarListAddTail (
+ (AML_NODE_HANDLE)PackageNode,
+ (AML_NODE_HANDLE)ResourceTemplateNode
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ return Status;
+
+error_handler:
+ if (RdNode != NULL) {
+ AmlDeleteTree ((AML_NODE_HANDLE)RdNode);
+ }
+
+ if (ResourceTemplateNode != NULL) {
+ AmlDeleteTree ((AML_NODE_HANDLE)ResourceTemplateNode);
+ }
+
+ return Status;
+}
+
+/** Utility function to check if generic address points to NULL
+
+ @param [in] Address Pointer to the Generic address
+
+ @retval TRUE Address is system memory with an Address of 0.
+ @retval FALSE Address does not point to NULL.
+**/
+STATIC
+BOOLEAN
+EFIAPI
+IsNullGenericAddress (
+ IN EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE *Address
+ )
+{
+ if ((Address == NULL) ||
+ ((Address->AddressSpaceId == EFI_ACPI_6_4_SYSTEM_MEMORY) &&
+ (Address->Address == 0x0)))
+ {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/** Adds an integer or register to the package
+
+ @ingroup CodeGenApis
+
+ @param [in] Register If provided, register that will be added to package
+ @param [in] Integer If Register is NULL, integer that will be added to the package
+ @param [in] PackageNode Package to add value to
+
+ @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
+AmlAddRegisterOrIntegerToPackage (
+ IN EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE *Register OPTIONAL,
+ IN UINT32 Integer,
+ IN AML_OBJECT_NODE_HANDLE PackageNode
+ )
+{
+ EFI_STATUS Status;
+ AML_OBJECT_NODE_HANDLE IntegerNode;
+
+ IntegerNode = NULL;
+
+ if (!IsNullGenericAddress (Register)) {
+ Status = AmlAddRegisterToPackage (Register, PackageNode);
+ } else {
+ Status = AmlCodeGenInteger (Integer, &IntegerNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ return Status;
+ }
+
+ Status = AmlVarListAddTail (
+ (AML_NODE_HANDLE)PackageNode,
+ (AML_NODE_HANDLE)IntegerNode
+ );
+ }
+
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ if (IntegerNode != NULL) {
+ AmlDeleteTree ((AML_NODE_HANDLE)IntegerNode);
+ }
+ }
+
+ return Status;
+}
+
+/** Create a _CPC node.
+
+ Creates and optionally adds the following node
+ 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)
+ })
+
+ If resource buffer is NULL then integer will be used.
+
+ Cf. ACPI 6.4, s8.4.7.1 _CPC (Continuous Performance Control)
+
+ @ingroup CodeGenApis
+
+ @param [in] CpcInfo CpcInfo object
+ @param [in] ParentNode If provided, set ParentNode as the parent
+ of the node created.
+ @param [out] NewCpcNode If success and provided, contains the created node.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_INVALID_PARAMETER Invalid parameter.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+**/
+EFI_STATUS
+EFIAPI
+AmlCreateCpcNode (
+ IN AML_CPC_INFO *CpcInfo,
+ IN AML_NODE_HANDLE ParentNode OPTIONAL,
+ OUT AML_OBJECT_NODE_HANDLE *NewCpcNode OPTIONAL
+ )
+{
+ EFI_STATUS Status;
+ AML_OBJECT_NODE_HANDLE CpcNode;
+ AML_OBJECT_NODE_HANDLE CpcPackage;
+ UINT32 NumberOfEntries;
+
+ if ((CpcInfo == NULL) ||
+ ((ParentNode == NULL) && (NewCpcNode == NULL)))
+ {
+ ASSERT (0);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ // Revision 3 per ACPI 6.4 specification
+ if (CpcInfo->Revision == 3) {
+ // NumEntries 23 per ACPI 6.4 specification
+ NumberOfEntries = 23;
+ } else {
+ ASSERT (0);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((IsNullGenericAddress (&CpcInfo->HighestPerformanceBuffer) &&
+ (CpcInfo->HighestPerformanceInteger == 0)) ||
+ (IsNullGenericAddress (&CpcInfo->NominalPerformanceBuffer) &&
+ (CpcInfo->NominalPerformanceInteger == 0)) ||
+ (IsNullGenericAddress (&CpcInfo->LowestNonlinearPerformanceBuffer) &&
+ (CpcInfo->LowestNonlinearPerformanceInteger == 0)) ||
+ (IsNullGenericAddress (&CpcInfo->LowestPerformanceBuffer) &&
+ (CpcInfo->LowestPerformanceInteger == 0)) ||
+ IsNullGenericAddress (&CpcInfo->DesiredPerformanceRegister) ||
+ IsNullGenericAddress (&CpcInfo->ReferencePerformanceCounterRegister) ||
+ IsNullGenericAddress (&CpcInfo->DeliveredPerformanceCounterRegister) ||
+ IsNullGenericAddress (&CpcInfo->PerformanceLimitedRegister))
+ {
+ ASSERT (0);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ CpcPackage = NULL;
+
+ Status = AmlCodeGenNamePackage ("_CPC", NULL, &CpcNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ return Status;
+ }
+
+ // Get the Package object node of the _CPC node,
+ // which is the 2nd fixed argument (i.e. index 1).
+ CpcPackage = (AML_OBJECT_NODE_HANDLE)AmlGetFixedArgument (
+ CpcNode,
+ EAmlParseIndexTerm1
+ );
+ if ((CpcPackage == NULL) ||
+ (AmlGetNodeType ((AML_NODE_HANDLE)CpcPackage) != EAmlNodeObject) ||
+ (!AmlNodeHasOpCode (CpcPackage, AML_PACKAGE_OP, 0)))
+ {
+ ASSERT (0);
+ Status = EFI_INVALID_PARAMETER;
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ NULL,
+ NumberOfEntries,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ NULL,
+ CpcInfo->Revision,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ &CpcInfo->HighestPerformanceBuffer,
+ CpcInfo->HighestPerformanceInteger,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ &CpcInfo->NominalPerformanceBuffer,
+ CpcInfo->NominalPerformanceInteger,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ &CpcInfo->LowestNonlinearPerformanceBuffer,
+ CpcInfo->LowestNonlinearPerformanceInteger,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ &CpcInfo->LowestPerformanceBuffer,
+ CpcInfo->LowestPerformanceInteger,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->GuaranteedPerformanceRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->DesiredPerformanceRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->MinimumPerformanceRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->MaximumPerformanceRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->PerformanceReductionToleranceRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->TimeWindowRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ &CpcInfo->CounterWraparoundTimeBuffer,
+ CpcInfo->CounterWraparoundTimeInteger,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->ReferencePerformanceCounterRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->DeliveredPerformanceCounterRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->PerformanceLimitedRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->CPPCEnableRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ &CpcInfo->AutonomousSelectionEnableBuffer,
+ CpcInfo->AutonomousSelectionEnableInteger,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->AutonomousActivityWindowRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterToPackage (&CpcInfo->EnergyPerformancePreferenceRegister, CpcPackage);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ &CpcInfo->ReferencePerformanceBuffer,
+ CpcInfo->ReferencePerformanceInteger,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ &CpcInfo->LowestFrequencyBuffer,
+ CpcInfo->LowestFrequencyInteger,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlAddRegisterOrIntegerToPackage (
+ &CpcInfo->NominalFrequencyBuffer,
+ CpcInfo->NominalFrequencyInteger,
+ CpcPackage
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = LinkNode (CpcNode, ParentNode, NewCpcNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ return Status;
+
+error_handler:
+ AmlDeleteTree ((AML_NODE_HANDLE)CpcNode);
+ return Status;
+}
--
2.25.1
next prev parent reply other threads:[~2022-09-22 20:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-22 20:36 [PATCH v5 0/3] DynamicTablesPkg: _CPC support Jeff Brasen
2022-09-22 20:36 ` [PATCH v5 1/3] DynamicTablesPkg: Add CM_ARM_CPC_INFO object Jeff Brasen
2022-09-22 20:36 ` Jeff Brasen [this message]
2022-09-22 20:36 ` [PATCH v5 3/3] DynamicTablesPkg: SSDT CPU _CPC generator Jeff Brasen
2022-09-23 16:55 ` [PATCH v5 0/3] DynamicTablesPkg: _CPC support Sami Mujawar
2022-09-23 17:05 ` Jeff Brasen
2022-09-23 17:22 ` Sami Mujawar
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