From 71ec5d3415c9c012d9dc08a5073c20380eb5d17b Mon Sep 17 00:00:00 2001
From: Pierre Gondois <pierre.gondois@arm.com>
Date: Thu, 25 Jan 2024 16:18:44 +0100
Subject: DynamicTablesPkg: Add CM_ARM_PSD_INFO object

Add an object describing _PSD information, cf. ACPI 6.5,
s8.4.5.5 _PSD (P-State Dependency).
Also add the corresponding CmObjParser.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
---
 DynamicTablesPkg/Include/AcpiObjects.h               | 20 ++++++++++++++++++++
 DynamicTablesPkg/Include/ArmNameSpaceObjects.h       | 10 ++++++++++
 .../ConfigurationManagerObjectParser.c               | 11 +++++++++++
 3 files changed, 41 insertions(+)

(limited to 'DynamicTablesPkg')

diff --git a/DynamicTablesPkg/Include/AcpiObjects.h b/DynamicTablesPkg/Include/AcpiObjects.h
index 8981c22..2bdabb2 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 6.5, 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 453cc3f..3748cb7 100644
--- a/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
+++ b/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
@@ -72,6 +72,7 @@ typedef enum ArmObjectID {
   EArmObjPccSubspaceType4Info,                                 ///< 47 - Pcc Subspace Type 4 Info
   EArmObjPccSubspaceType5Info,                                 ///< 48 - Pcc Subspace Type 5 Info
   EArmObjEtInfo,                                               ///< 49 - Embedded Trace Extension/Module Info
+  EArmObjPsdInfo,                                              ///< 50 - P-State Dependency (PSD) Info
   EArmObjMax
 } EARM_OBJECT_ID;
 
@@ -1327,6 +1328,15 @@ typedef struct CmArmEtInfo {
   ARM_ET_TYPE    EtType;
 } CM_ARM_ET_INFO;
 
+/** A structure that describes a
+    P-State Dependency (PSD) Info.
+
+    Cf. ACPI 6.5, 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 c1a7528..dc60a75 100644
--- a/DynamicTablesPkg/Library/Common/TableHelperLib/ConfigurationManagerObjectParser.c
+++ b/DynamicTablesPkg/Library/Common/TableHelperLib/ConfigurationManagerObjectParser.c
@@ -669,6 +669,15 @@ STATIC CONST CM_OBJ_PARSER  CmArmEtInfo[] = {
   { "EtType", sizeof (ARM_ET_TYPE), "0x%x", NULL }
 };
 
+/** A parser for EArmObjPsdInfo.
+*/
+STATIC CONST CM_OBJ_PARSER  CmArmPsdInfoParser[] = {
+  { "Revision",  1, "0x%x", 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[] = {
@@ -767,6 +776,8 @@ STATIC CONST CM_OBJ_PARSER_ARRAY  ArmNamespaceObjectParser[] = {
     ARRAY_SIZE (CmArmPccSubspaceType5InfoParser) },
   { "EArmObjEtInfo",                       CmArmEtInfo,
     ARRAY_SIZE (CmArmEtInfo) },
+  { "EArmObjPsdInfo",                      CmArmPsdInfoParser,
+    ARRAY_SIZE (CmArmPsdInfoParser) },
   { "EArmObjMax",                          NULL,                                  0                                },
 };
 
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