From nobody Tue Feb 10 08:41:08 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+76954+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+76954+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=arm.com ARC-Seal: i=1; a=rsa-sha256; t=1624448520; cv=none; d=zohomail.com; s=zohoarc; b=L5lLdCk3X65dY3iownwLA/m6nh9HvhkL/HL/Z3JIgcBX4yUMK7+X0AyG9G/DCQifuLIXqM6BI5r+fHVEXzZ0DAmYVs8W31Y1qVDTQeGygqAXQt20ivcyOos3XAXqsw7eHueV8P7eS+LK0sI2WiNGhv/GuOeKkX/WH8/1e63QzHA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1624448520; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:Message-ID:Reply-To:References:Sender:Subject:To; bh=ET4QiVkav2FGaqov+PssSUA03EI/nq+esCa0f24WupI=; b=aOcE4ePH+qH0+/fs55VXJ5/Xyv0hlstugVdvflL5moAZDXLKfy6Ti1wYQOPvj8w1pEAZrPYX+JA0FHuY03UAoL5rKzyV4ngYY/AXPANEdPKIvMBkpwVH5+AgaUqIOotEYzVaf9xBMnx71/pwDpatfl+SAlVpC51eS2DIXt6PbdQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+76954+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 16244485207241018.7134370774595; Wed, 23 Jun 2021 04:42:00 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id Fu5WYY1788612xjrgCgQwYZQ; Wed, 23 Jun 2021 04:42:00 -0700 X-Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mx.groups.io with SMTP id smtpd.web10.6285.1624448514676192270 for ; Wed, 23 Jun 2021 04:41:54 -0700 X-Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5824C1063; Wed, 23 Jun 2021 04:41:54 -0700 (PDT) X-Received: from e120189.arm.com (unknown [10.57.78.245]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id D7E913F719; Wed, 23 Jun 2021 04:41:52 -0700 (PDT) From: "PierreGondois" To: devel@edk2.groups.io, Sami Mujawar , Alexei Fedorov Cc: Akanksha Jain , Alexandru Elisei Subject: [edk2-devel] [PATCH v1 12/13] DynamicTablesPkg: Add CM_ARM_LPI_INFO object Date: Wed, 23 Jun 2021 12:40:38 +0100 Message-Id: <20210623114039.24491-14-Pierre.Gondois@arm.com> In-Reply-To: <20210623114039.24491-1-Pierre.Gondois@arm.com> References: <20210623114039.24491-1-Pierre.Gondois@arm.com> Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,pierre.gondois@arm.com X-Gm-Message-State: B3SPCsLezAYFIyJ4n3LYkazMx1787277AA= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1624448520; bh=bNSgWgyWhXLLmffZSBWcACTFbre5lRaD/KWm1qt4s0c=; h=Cc:Date:From:Reply-To:Subject:To; b=J5TnZ9VxuyNf/bidwNkYcE/o3l5l3OmdKUhTpG3yl4FoOYHD94UQ7aHnP/J7GT5rP1I WpL1qm/cdbMX/jcZ3qmd0DWel1NEzAmqnHstDGYq5I6za32GvhXLQELi8z2sja7l3CEWj O6pokauv8OHDf3yrUVpPJm0cs0HejwAakGc= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Pierre Gondois Introduce the CM_ARM_LPI_INFO CmObj in the ArmNameSpaceObjects. This allows to describe LPI state information, as described in ACPI 6.4, s8.4.4.3 "_LPI (Low Power Idle States)". Signed-off-by: Pierre Gondois Reviewed-by: Sami Mujawar --- .../Include/ArmNameSpaceObjects.h | 68 +++++++++++++++++++ .../ConfigurationManagerObjectParser.c | 35 ++++++++++ 2 files changed, 103 insertions(+) diff --git a/DynamicTablesPkg/Include/ArmNameSpaceObjects.h b/DynamicTables= Pkg/Include/ArmNameSpaceObjects.h index 19dcae13b219..9c49091def59 100644 --- a/DynamicTablesPkg/Include/ArmNameSpaceObjects.h +++ b/DynamicTablesPkg/Include/ArmNameSpaceObjects.h @@ -58,6 +58,7 @@ typedef enum ArmObjectID { EArmObjGenericInitiatorAffinityInfo, ///< 34 - Generic Initiator Affinity EArmObjSerialPortInfo, ///< 35 - Generic Serial Port Info EArmObjCmn600Info, ///< 36 - CMN-600 Info + EArmObjLpiInfo, ///< 37 - Lpi Info EArmObjMax } EARM_OBJECT_ID; =20 @@ -711,6 +712,10 @@ typedef struct CmArmProcHierarchyInfo { /// the NoOfPrivateResources is 0, in which case it is recommended to set /// this field to CM_NULL_TOKEN. CM_OBJECT_TOKEN PrivateResourcesArrayToken; + /// Optional field: Reference Token for the Lpi state of this processor. + /// Token identifying a CM_ARM_OBJ_REF structure, itself referencing + /// CM_ARM_LPI_INFO objects. + CM_OBJECT_TOKEN LpiToken; } CM_ARM_PROC_HIERARCHY_INFO; =20 /** A structure that describes the Cache Type Structure (Type 1) in PPTT @@ -878,6 +883,69 @@ typedef struct CmArmCmn600Info { CM_ARM_EXTENDED_INTERRUPT DtcInterrupt[4]; } CM_ARM_CMN_600_INFO; =20 +/** A structure that describes the Lpi information. + + The Low Power Idle states are described in DSDT/SSDT and associated + to cpus/clusters in the cpu topology. + + ID: EArmObjLpiInfo +*/ +typedef struct CmArmLpiInfo { + /** Minimum Residency. Time in microseconds after which a + state becomes more energy efficient than any shallower state. + */ + UINT32 MinResidency; + + /** Worst case time in microseconds from a wake interrupt + being asserted to the return to a running state + */ + UINT32 WorstCaseWakeLatency; + + /** Flags. + */ + UINT32 Flags; + + /** Architecture specific context loss flags. + */ + UINT32 ArchFlags; + + /** Residency counter frequency in cycles-per-second (Hz). + */ + UINT32 ResCntFreq; + + /** Every shallower power state in the parent is also enabled. + */ + UINT32 EnableParentState; + + /** The EntryMethod _LPI field can be described as an integer + or in a Register resource data descriptor. + + If IsInteger is TRUE, the IntegerEntryMethod field is used. + If IsInteger is FALSE, the RegisterEntryMethod field is used. + */ + BOOLEAN IsInteger; + + /** EntryMethod described as an Integer. + */ + UINT64 IntegerEntryMethod; + + /** EntryMethod described as a EFI_ACPI_GENERIC_REGISTER_DESCRIPTOR. + */ + EFI_ACPI_6_3_GENERIC_ADDRESS_STRUCTURE RegisterEntryMethod; + + /** Residency counter register. + */ + EFI_ACPI_6_3_GENERIC_ADDRESS_STRUCTURE ResidencyCounterRegister; + + /** Usage counter register. + */ + EFI_ACPI_6_3_GENERIC_ADDRESS_STRUCTURE UsageCounterRegister; + + /** String representing the Lpi state + */ + CHAR8 StateName[16]; +} CM_ARM_LPI_INFO; + #pragma pack() =20 #endif // ARM_NAMESPACE_OBJECTS_H_ diff --git a/DynamicTablesPkg/Library/Common/TableHelperLib/ConfigurationMa= nagerObjectParser.c b/DynamicTablesPkg/Library/Common/TableHelperLib/Config= urationManagerObjectParser.c index 654ead6878e6..da5f5846edd9 100644 --- a/DynamicTablesPkg/Library/Common/TableHelperLib/ConfigurationManagerOb= jectParser.c +++ b/DynamicTablesPkg/Library/Common/TableHelperLib/ConfigurationManagerOb= jectParser.c @@ -368,6 +368,39 @@ STATIC CONST CM_OBJ_PARSER CmArmCmn600InfoParser[] =3D= { {"DtcFlags[3]", 4, "0x%x", NULL} }; =20 +/** A parser for the EFI_ACPI_6_3_GENERIC_ADDRESS_STRUCTURE structure. +*/ +STATIC CONST CM_OBJ_PARSER AcpiGenericAddressParser[] =3D { + {"AddressSpaceId", 1, "%d", NULL}, + {"RegisterBitWidth", 1, "%d", NULL}, + {"RegisterBitOffset", 1, "%d", NULL}, + {"AccessSize", 1, "%d", NULL}, + {"Address", 8, "0x%llx", NULL}, +}; + +/** A parser for EArmObjLpiInfo. +*/ +STATIC CONST CM_OBJ_PARSER CmArmLpiInfoParser[] =3D { + {"MinResidency", 4, "0x%llx", NULL}, + {"WorstCaseWakeLatency", 4, "0x%llx", NULL}, + {"Flags", 4, "0x%llx", NULL}, + {"ArchFlags", 4, "0x%llx", NULL}, + {"ResCntFreq", 4, "0x%llx", NULL}, + {"EnableParentState", 4, "0x%llx", NULL}, + {"IsInteger", 1, "%d", NULL}, + {"IntegerEntryMethod", 8, "0x%llx", NULL}, + {"RegisterEntryMethod", sizeof (EFI_ACPI_6_3_GENERIC_ADDRESS_STRUCTURE), + NULL, NULL, AcpiGenericAddressParser, + ARRAY_SIZE (AcpiGenericAddressParser)}, + {"ResidencyCounterRegister", sizeof (EFI_ACPI_6_3_GENERIC_ADDRESS_STRUCT= URE), + NULL, NULL, AcpiGenericAddressParser, + ARRAY_SIZE (AcpiGenericAddressParser)}, + {"UsageCounterRegister", sizeof (EFI_ACPI_6_3_GENERIC_ADDRESS_STRUCTURE), + NULL, NULL, AcpiGenericAddressParser, + ARRAY_SIZE (AcpiGenericAddressParser)}, + {"StateName", 16, "0x%a", NULL}, +}; + /** A parser for Arm namespace objects. */ STATIC CONST CM_OBJ_PARSER_ARRAY ArmNamespaceObjectParser[] =3D { @@ -440,6 +473,8 @@ STATIC CONST CM_OBJ_PARSER_ARRAY ArmNamespaceObjectPars= er[] =3D { ARRAY_SIZE (CmArmSerialPortInfoParser)}, {"EArmObjCmn600Info", CmArmCmn600InfoParser, ARRAY_SIZE (CmArmCmn600InfoParser)}, + {"EArmObjLpiInfo", CmArmLpiInfoParser, + ARRAY_SIZE (CmArmLpiInfoParser)}, {"EArmObjMax", NULL, 0}, }; =20 --=20 2.17.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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