From nobody Mon Sep 16 18:57:16 2024 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+114425+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+114425+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=arm.com ARC-Seal: i=1; a=rsa-sha256; t=1706196139; cv=none; d=zohomail.com; s=zohoarc; b=WpKs530mdRVIB4d1XesBUWDThn0Ds9nE0nhMwnW0yvuPxKZA2gFbDmOyFJ3KClkXdTFi1xtznllx0V4cQFiI054ldvgC/gC+qPOMPyg9q07oqj+W0kbLxgneJKBA28JeuSXj6AeHp8BA5fgfBDLeOnh4CZdaH0QDOpgX8RwHY5s= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1706196139; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=Jf7pSPcq+EQNMGtZdio+yTHa/DyzZp7hUinBsk0HZK0=; b=VcNTRQ00GifIf3rVb8VcxHeEA9WSlxDrwSKg9W/yy2+1G5kCFT/PElYdc+J4g54XMM+/1iNdKmW4irnvPLIdGW2Z9wGFOyiH1c7X68/UANKZhb8dmaO1dRGL8MINggkOobLisTUEAyyhuicULduQcjmBoyGqNCmipJPKcZOQbzE= 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+114425+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 1706196139389881.4495751096707; Thu, 25 Jan 2024 07:22:19 -0800 (PST) Return-Path: DKIM-Signature: a=rsa-sha256; bh=br/taeJHEaXKsvrgSvAWrAF8o7doV3/WucbLkSbYP5Y=; c=relaxed/simple; d=groups.io; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:MIME-Version:Precedence:List-Subscribe:List-Help:Sender:List-Id:Mailing-List:Delivered-To:Reply-To:List-Unsubscribe-Post:List-Unsubscribe:Content-Transfer-Encoding; s=20140610; t=1706196139; v=1; b=YNKkmk2HtKNMXTL3EyMzBL0yVbmGc0P1c0mfSEHYnPx9TsMG0wGJxNBVQbBbE4UzEmStqxNq VWLgkf/WN+0TGrt69G0JEwrBYM0DrVO84VmNlBi+D78dd93kA6waz0C3GRyH0BzDAX/2kmNts5X qdKAd0ugtjPNAivEaOhfy9H4= X-Received: by 127.0.0.2 with SMTP id uAQlYY1788612xx0nRmreVDy; Thu, 25 Jan 2024 07:22:19 -0800 X-Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mx.groups.io with SMTP id smtpd.web10.20387.1706196138458826454 for ; Thu, 25 Jan 2024 07:22:18 -0800 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 9BC031FB; Thu, 25 Jan 2024 07:23:02 -0800 (PST) X-Received: from e126645.arm.com (unknown [10.57.47.22]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 0CBC93F5A1; Thu, 25 Jan 2024 07:22:16 -0800 (PST) From: "PierreGondois" To: devel@edk2.groups.io Cc: Sami Mujawar , Thomas Abraham , Pierre Gondois Subject: [edk2-devel] [PATCH v5 3/4] Platform/ARM: Juno: Generate _CPC objects for JunoR2 Date: Thu, 25 Jan 2024 16:21:42 +0100 Message-Id: <20240125152143.624231-4-Pierre.Gondois@arm.com> In-Reply-To: <20240125152143.624231-1-Pierre.Gondois@arm.com> References: <20240125152143.624231-1-Pierre.Gondois@arm.com> MIME-Version: 1.0 Precedence: Bulk 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 List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: eEWebT8DATsqHXeiuHB2RA1ax1787277AA= Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1706196141359100016 Content-Type: text/plain; charset="utf-8" From: Pierre Gondois The SsdtCpuTopologyGenerator can generate _CPC objects. This is done by querying the SCP for the relevant performance state information through SCMI. CM_ARM_CPC_INFO are then populated and used to generate _CPC objects in the Ssdt Cpu topology. Use the DynamicTablesScmiInfoLib and add the handling to generate _CPC information. Note that using _CPC is only possible if SCP is correctly tuned to advertise performance levels on an abstract and unified scale. A basic check is done to prevent the _CPC generation otherwise. Perf level values used for testing: - little CPUs OPPs: [181, 322, 383] * 1000 - big CPUs OPPs: [512, 833, 1024] * 1000 Signed-off-by: Pierre Gondois --- .../ConfigurationManager.c | 242 +++++++++++++++++- .../ConfigurationManager.h | 7 + .../ConfigurationManagerDxe.inf | 1 + 3 files changed, 247 insertions(+), 3 deletions(-) diff --git a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManager= Dxe/ConfigurationManager.c b/Platform/ARM/JunoPkg/ConfigurationManager/Conf= igurationManagerDxe/ConfigurationManager.c index 15292f810a28..d92a08749e87 100644 --- a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/Con= figurationManager.c +++ b/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/Con= figurationManager.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -901,6 +902,172 @@ HandleCmObjectSearchPlatformRepo ( return Status; } =20 +/** Clear Cpc information. + + If populating _CPC information fails, remove GicC tokens pointing + to Cpc CmObj to avoid creating corrupted _CPC objects. + + @param [in] PlatformRepo Platfom Info repository. + + @retval EFI_SUCCESS Success. +**/ +STATIC +EFI_STATUS +EFIAPI +ClearCpcInfo ( + EDKII_PLATFORM_REPOSITORY_INFO *PlatformRepo + ) +{ + CM_ARM_GICC_INFO *GicCInfo; + + GicCInfo =3D (CM_ARM_GICC_INFO*)&PlatformRepo->GicCInfo; + + GicCInfo[0].CpcToken =3D CM_NULL_TOKEN; + GicCInfo[1].CpcToken =3D CM_NULL_TOKEN; + GicCInfo[2].CpcToken =3D CM_NULL_TOKEN; + GicCInfo[3].CpcToken =3D CM_NULL_TOKEN; + GicCInfo[4].CpcToken =3D CM_NULL_TOKEN; + GicCInfo[5].CpcToken =3D CM_NULL_TOKEN; + + return EFI_SUCCESS; +} + +/** Use the SCMI protocol to populate CPC objects dynamically. + + @param [in] PlatformRepo Platfom Info repository. + @param [in] DomainId Id of the DVFS domain to probe. + + @retval EFI_SUCCESS Success. + @retval EFI_INVALID_PARAMETER A parameter is invalid. + @retval EFI_UNSUPPORTED Not supported. + @retval !(EFI_SUCCESS) An error occured. +**/ +STATIC +EFI_STATUS +EFIAPI +PopulateCpcInfo ( + EDKII_PLATFORM_REPOSITORY_INFO *PlatformRepo, + IN UINT32 DomainId + ) +{ + EFI_STATUS Status; + CM_ARM_GICC_INFO *GicCInfo; + AML_CPC_INFO *CpcInfo; + + if ((PlatformRepo =3D=3D NULL) || + ((DomainId !=3D PSD_BIG_DOMAIN_ID) && + (DomainId !=3D PSD_LITTLE_DOMAIN_ID))) { + Status =3D EFI_INVALID_PARAMETER; + ASSERT_EFI_ERROR (Status); + return Status; + } + + CpcInfo =3D &PlatformRepo->CpcInfo[DomainId]; + GicCInfo =3D (CM_ARM_GICC_INFO*)&PlatformRepo->GicCInfo; + + Status =3D DynamicTablesScmiInfoGetFastChannel ( + PlatformRepo->PsdInfo[DomainId].Domain, + CpcInfo + ); + if (EFI_ERROR (Status)) { + return Status; + } + + /* CPPC must advertise performances on a 'continuous, abstract, unit-less + performance scale', i.e. CPU performances on an asymmetric platform + nust be represented on a unified scale. + CPU performance values are obtained from SCP through SCMI and adverti= sed + to the OS via the _CPC objects. SCP currently maps performance reques= ts + to frequency requests. + Thus, SCP must be modified to advertise (and correctly handle) + performance values on a unified scale. + + Check that SCP is using a unified scale by checking that the advertis= ed + lowest/nominal frequencies are not the default ones. + */ + if (((DomainId =3D=3D PSD_BIG_DOMAIN_ID) && + (CpcInfo->LowestPerformanceInteger =3D=3D 600000000) && + (CpcInfo->NominalPerformanceInteger =3D=3D 1000000000)) || + ((DomainId =3D=3D PSD_LITTLE_DOMAIN_ID) && + (CpcInfo->LowestPerformanceInteger =3D=3D 450000000) && + (CpcInfo->NominalPerformanceInteger =3D=3D 800000000))) { + return EFI_UNSUPPORTED; + } + + // Juno R2's lowest/nominal frequencies. + // Nominal frequency !=3D Highest frequency. + if (DomainId =3D=3D PSD_BIG_DOMAIN_ID) { + CpcInfo->LowestFrequencyInteger =3D 600; + CpcInfo->NominalFrequencyInteger =3D 1000; + } else { + CpcInfo->LowestFrequencyInteger =3D 450; + CpcInfo->NominalFrequencyInteger =3D 800; + } + + // The mapping Psd -> CPUs is available here. + if (DomainId =3D=3D PSD_BIG_DOMAIN_ID) { + GicCInfo[0].CpcToken =3D (CM_OBJECT_TOKEN)CpcInfo; + GicCInfo[1].CpcToken =3D (CM_OBJECT_TOKEN)CpcInfo; + } else { + GicCInfo[2].CpcToken =3D (CM_OBJECT_TOKEN)CpcInfo; + GicCInfo[3].CpcToken =3D (CM_OBJECT_TOKEN)CpcInfo; + GicCInfo[4].CpcToken =3D (CM_OBJECT_TOKEN)CpcInfo; + GicCInfo[5].CpcToken =3D (CM_OBJECT_TOKEN)CpcInfo; + } + + /* + Arm advises to use FFH to the following registers which uses AMU count= ers: + - ReferencePerformanceCounterRegister + - DeliveredPerformanceCounterRegister + Cf. Arm Functional Fixed Hardware Specification + s3.2 Performance management and Collaborative Processor Performance Co= ntrol + + AMU is not supported by the Juno, so clear these registers. + */ + CpcInfo->ReferencePerformanceCounterRegister.AddressSpaceId =3D EFI_ACPI= _6_5_SYSTEM_MEMORY; + CpcInfo->ReferencePerformanceCounterRegister.RegisterBitWidth =3D 0; + CpcInfo->ReferencePerformanceCounterRegister.RegisterBitOffset =3D 0; + CpcInfo->ReferencePerformanceCounterRegister.AccessSize =3D 0; + CpcInfo->ReferencePerformanceCounterRegister.Address =3D 0; + + CpcInfo->DeliveredPerformanceCounterRegister.AddressSpaceId =3D EFI_ACPI= _6_5_SYSTEM_MEMORY; + CpcInfo->DeliveredPerformanceCounterRegister.RegisterBitWidth =3D 0; + CpcInfo->DeliveredPerformanceCounterRegister.RegisterBitOffset =3D 0; + CpcInfo->DeliveredPerformanceCounterRegister.AccessSize =3D 0; + CpcInfo->DeliveredPerformanceCounterRegister.Address =3D 0; + + return Status; +} + +/** Iterate over the PSD Domains and try to populate the Cpc objects. +**/ +VOID +EFIAPI +PopulateCpcObjects ( + VOID + ) +{ + EFI_STATUS Status; + UINT32 Index; + BOOLEAN CpcFailed; + + CpcFailed =3D FALSE; + for (Index =3D 0; Index < PSD_DOMAIN_COUNT; Index++) { + Status =3D PopulateCpcInfo (&ArmJunoPlatformRepositoryInfo, Index); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_WARN, "WARN: Could not populate _CPC.\n")); + CpcFailed =3D TRUE; + break; + } + } + + if (CpcFailed) { + // _CPC information is not mandatory and SCP might not support some + // SCMI requests. Failing should not prevent from booting. + ClearCpcInfo (&ArmJunoPlatformRepositoryInfo); + } +} + /** Initialize the platform configuration repository. =20 @param [in] This Pointer to the Configuration Manager Protocol. @@ -920,6 +1087,14 @@ InitializePlatformRepository ( =20 GetJunoRevision (PlatformRepo->JunoRevision); DEBUG ((DEBUG_INFO, "Juno Rev =3D 0x%x\n", PlatformRepo->JunoRevision)); + + /// + /// _CPC was only tested on Juno R2, so only enable support for this ver= sion. + /// + if ((ArmJunoPlatformRepositoryInfo.JunoRevision =3D=3D JUNO_REVISION_R2)= ) { + PopulateCpcObjects (); + } + return EFI_SUCCESS; } =20 @@ -1212,6 +1387,55 @@ GetPsdInfo ( return EFI_SUCCESS; } =20 +/** Return Cpc Info. + + @param [in] This Pointer to the Configuration Manager Pro= tocol. + @param [in] CmObjectId The Object ID of the CM object requested + @param [in] SearchToken A unique token for identifying the reque= sted + CM_ARM_PCI_INTERRUPT_MAP_INFO object. + @param [in, out] CmObject Pointer to the Configuration Manager Obj= ect + descriptor describing the requested Obje= ct. + + @retval EFI_SUCCESS Success. + @retval EFI_INVALID_PARAMETER A parameter is invalid. + @retval EFI_NOT_FOUND The required object information is not f= ound. +**/ +EFI_STATUS +EFIAPI +GetCpcInfo ( + IN CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL * CONST This, + IN CONST CM_OBJECT_ID CmObjectId, + IN CONST CM_OBJECT_TOKEN SearchToken, + IN OUT CM_OBJ_DESCRIPTOR * CONST CmObject + ) +{ + EDKII_PLATFORM_REPOSITORY_INFO * PlatformRepo; + UINT32 TotalObjCount; + UINT32 ObjIndex; + + if ((This =3D=3D NULL) || (CmObject =3D=3D NULL)) { + ASSERT (This !=3D NULL); + ASSERT (CmObject !=3D NULL); + return EFI_INVALID_PARAMETER; + } + + PlatformRepo =3D This->PlatRepoInfo; + + TotalObjCount =3D ARRAY_SIZE (PlatformRepo->CpcInfo); + + for (ObjIndex =3D 0; ObjIndex < TotalObjCount; ObjIndex++) { + if (SearchToken =3D=3D (CM_OBJECT_TOKEN)&PlatformRepo->CpcInfo[ObjInde= x]) { + CmObject->ObjectId =3D CmObjectId; + CmObject->Size =3D sizeof (PlatformRepo->CpcInfo[ObjIndex]); + CmObject->Data =3D (VOID*)&PlatformRepo->CpcInfo[ObjIndex]; + CmObject->Count =3D 1; + return EFI_SUCCESS; + } + } + + return EFI_SUCCESS; +} + /** Return a list of Configuration Manager object references pointed to by= the given input token. =20 @@ -1633,6 +1857,19 @@ GetArmNameSpaceObject ( ); break; =20 + case EArmObjCpcInfo: + Status =3D HandleCmObjectRefByToken ( + This, + CmObjectId, + PlatformRepo->CpcInfo, + sizeof (PlatformRepo->CpcInfo), + ARRAY_SIZE (PlatformRepo->CpcInfo), + Token, + GetCpcInfo, + CmObject + ); + break; + default: { Status =3D EFI_NOT_FOUND; DEBUG (( @@ -1821,7 +2058,7 @@ ConfigurationManagerDxeInitialize ( " Status =3D %r\n", Status )); - goto error_handler; + return Status; } =20 Status =3D InitializePlatformRepository ( @@ -1836,6 +2073,5 @@ ConfigurationManagerDxeInitialize ( )); } =20 -error_handler: - return Status; + return EFI_SUCCESS; } diff --git a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManager= Dxe/ConfigurationManager.h b/Platform/ARM/JunoPkg/ConfigurationManager/Conf= igurationManagerDxe/ConfigurationManager.h index e58e9cbecb23..78452295a180 100644 --- a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/Con= figurationManager.h +++ b/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/Con= figurationManager.h @@ -303,6 +303,13 @@ typedef struct PlatformRepositoryInfo { // Power domains CM_ARM_PSD_INFO PsdInfo[PSD_DOMAIN_COUNT]; =20 + // + // Dynamically populated fields from here. + // + + // Cpc info (1 for each PSD domain) + CM_ARM_CPC_INFO CpcInfo[PSD_DOMAIN_COUNT]; + /// Juno Board Revision UINT32 JunoRevision; } EDKII_PLATFORM_REPOSITORY_INFO; diff --git a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManager= Dxe/ConfigurationManagerDxe.inf b/Platform/ARM/JunoPkg/ConfigurationManager= /ConfigurationManagerDxe/ConfigurationManagerDxe.inf index 91bffe8d5d82..53060bf56531 100644 --- a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/Con= figurationManagerDxe.inf +++ b/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/Con= figurationManagerDxe.inf @@ -35,6 +35,7 @@ [Packages] =20 [LibraryClasses] ArmPlatformLib + DynamicTablesScmiInfoLib PrintLib UefiBootServicesTableLib UefiDriverEntryPoint --=20 2.25.1 -=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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