[edk2-devel] [PATCH v1 06/11] DynamicTablesPkg: Add CM_ARM_PSD_INFO object

[PierreGondois]

From: Pierre Gondois <pierre.gondois at arm.com>

Add an object describing _PSD information, cf. ACPI 6.4,
s8.4.5.5 _PSD (P-State Dependency).
Also add the corresponding CmObjParser.

Signed-off-by: Pierre Gondois <pierre.gondois at arm.com>
---
 DynamicTablesPkg/Include/AcpiObjects.h        | 20 +++++++++++++++++++
 .../Include/ArmNameSpaceObjects.h             | 12 ++++++++++-
 .../ConfigurationManagerObjectParser.c        | 11 ++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/DynamicTablesPkg/Include/AcpiObjects.h b/DynamicTablesPkg/Include/AcpiObjects.h
index 8981c229544a..d3c23d8d4f2b 100644
--- a/DynamicTablesPkg/Include/AcpiObjects.h
+++ b/DynamicTablesPkg/Include/AcpiObjects.h
@@ -1,6 +1,7 @@
 /** @file
 
   Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.<BR>
+  Copyright (c) 2022 - 2023, Arm Limited. All rights reserved.<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 **/
@@ -119,6 +120,25 @@ typedef struct AmlCpcInfo {
   UINT32                                    NominalFrequencyInteger;
 } AML_CPC_INFO;
 
+/** A structure that describes a
+    P-State Dependency (PSD) Info.
+
+  Cf. ACPI 6.4, s8.4.5.5 _PSD (P-State Dependency).
+*/
+typedef struct AmlPsdInfo {
+  /// Revision.
+  UINT8     Revision;
+
+  /// Domain Id.
+  UINT32    Domain;
+
+  /// Coordination type.
+  UINT32    CoordType;
+
+  /// Number of processors belonging to the Domain.
+  UINT32    NumProc;
+} AML_PSD_INFO;
+
 #pragma pack()
 
 #endif //AML_CPC_INFO_H_
diff --git a/DynamicTablesPkg/Include/ArmNameSpaceObjects.h b/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
index 8199882f69fe..ddd17fa45b1e 100644
--- a/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
+++ b/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
@@ -1,6 +1,6 @@
 /** @file
 
-  Copyright (c) 2017 - 2022, Arm Limited. All rights reserved.<BR>
+  Copyright (c) 2017 - 2023, Arm Limited. All rights reserved.<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -71,6 +71,7 @@ typedef enum ArmObjectID {
   EArmObjPccSubspaceType3Info,                                 ///< 46 - Pcc Subspace Type 3 Info
   EArmObjPccSubspaceType4Info,                                 ///< 47 - Pcc Subspace Type 4 Info
   EArmObjPccSubspaceType5Info,                                 ///< 48 - Pcc Subspace Type 5 Info
+  EArmObjPsdInfo,                                              ///< 49 - P-State Dependency (PSD) Info
   EArmObjMax
 } EARM_OBJECT_ID;
 
@@ -1297,6 +1298,15 @@ typedef struct CmArmPccSubspaceType5Info {
   PCC_MAILBOX_REGISTER_INFO    ErrorStatusReg;
 } CM_ARM_PCC_SUBSPACE_TYPE5_INFO;
 
+/** A structure that describes a
+    P-State Dependency (PSD) Info.
+
+    Cf. ACPI 6.4, s8.4.5.5 _PSD (P-State Dependency).
+
+    ID: EArmObjPsdInfo
+*/
+typedef AML_PSD_INFO CM_ARM_PSD_INFO;
+
 #pragma pack()
 
 #endif // ARM_NAMESPACE_OBJECTS_H_
diff --git a/DynamicTablesPkg/Library/Common/TableHelperLib/ConfigurationManagerObjectParser.c b/DynamicTablesPkg/Library/Common/TableHelperLib/ConfigurationManagerObjectParser.c
index 99d6032510a5..c8c2554a9f44 100644
--- a/DynamicTablesPkg/Library/Common/TableHelperLib/ConfigurationManagerObjectParser.c
+++ b/DynamicTablesPkg/Library/Common/TableHelperLib/ConfigurationManagerObjectParser.c
@@ -637,6 +637,15 @@ STATIC CONST CM_OBJ_PARSER  CmArmPccSubspaceType5InfoParser[] = {
     ARRAY_SIZE (CmArmMailboxRegisterInfoParser) },
 };
 
+/** A parser for EArmObjPsdInfo.
+*/
+STATIC CONST CM_OBJ_PARSER  CmArmPsdInfoParser[] = {
+  { "Revision",  1, "0x%llx", NULL },
+  { "DomainId",  4, "0x%x",   NULL },
+  { "CoordType", 4, "0x%x",   NULL },
+  { "NumProc",   4, "0x%x",   NULL },
+};
+
 /** A parser for Arm namespace objects.
 */
 STATIC CONST CM_OBJ_PARSER_ARRAY  ArmNamespaceObjectParser[] = {
@@ -733,6 +742,8 @@ STATIC CONST CM_OBJ_PARSER_ARRAY  ArmNamespaceObjectParser[] = {
     ARRAY_SIZE (CmArmPccSubspaceType34InfoParser) },
   { "EArmObjPccSubspaceType5Info",         CmArmPccSubspaceType5InfoParser,
     ARRAY_SIZE (CmArmPccSubspaceType5InfoParser) },
+  { "EArmObjCpcInfo",                      CmArmPsdInfoParser,
+    ARRAY_SIZE (CmArmPsdInfoParser) },
   { "EArmObjMax",                          NULL,                                  0                                },
 };
 
-- 
2.25.1



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