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Mon, 18 Dec 2023 21:07:03 -0600 From: "Abdul Lateef Attar via groups.io" To: CC: Abdul Lateef Attar , Pierre Gondois , Sami Mujawar Subject: [edk2-devel] [Resend PATCH v4 4/4] DynamicTablesPkg: AML Code generation to invoke a method Date: Tue, 19 Dec 2023 08:36:53 +0530 Message-ID: <1c56b1a9e5afe32036d950a33372849b36e10404.1702954979.git.AbdulLateef.Attar@amd.com> In-Reply-To: References: MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EE36:EE_|SA1PR12MB7319:EE_ X-MS-Office365-Filtering-Correlation-Id: 3151584d-500d-44df-93c7-08dc003f94b8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Message-Info: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Dec 2023 03:07:05.6738 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3151584d-500d-44df-93c7-08dc003f94b8 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EE36.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7319 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,AbdulLateef.Attar@amd.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: qZbGX8fryro5cv6sr31ZuXewx7686176AA= Content-Transfer-Encoding: quoted-printable Content-Type: text/plain X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b=XfFdWhmB; dmarc=none; spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce@groups.io; arc=reject ("signature check failed: fail, {[1] = sig:microsoft.com:reject}") From: Abdul Lateef Attar Adds API to generate AML code to invoke/call another method. Also provides ability to pass arguments of type integer, string, ArgObj or LocalObj. Cc: Pierre Gondois Cc: Sami Mujawar Signed-off-by: Abdul Lateef Attar --- .../Include/Library/AmlLib/AmlLib.h | 112 +++++++++ .../Common/AmlLib/CodeGen/AmlCodeGen.c | 236 +++++++++++++++++- 2 files changed, 347 insertions(+), 1 deletion(-) diff --git a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h b/DynamicTabl= esPkg/Include/Library/AmlLib/AmlLib.h index eb8740692f..fb16637f02 100644 --- a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h +++ b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h @@ -101,6 +101,56 @@ typedef enum { AmlAddressRangeMax =3D 4 } AML_MEMORY_ATTRIBUTES_MTP; =20 +/** Method parameter types + + Possible values are: + 0 - AmlMethodParamTypeInteger + 1 - AmlMethodParamTypeString + 2 - AmlMethodParamTypeArg + 3 - AmlMethodParamTypeLocal + + @par Reference(s) + - ACPI 6.5, s20.2.5 "Term Objects Encoding" + +**/ +typedef enum { + AmlMethodParamTypeInteger =3D 0, + AmlMethodParamTypeString =3D 1, + AmlMethodParamTypeArg =3D 2, + AmlMethodParamTypeLocal =3D 3 +} AML_METHOD_PARAM_TYPE; + +/** AML Method parameter data + holds the AML method parameter data. +**/ +typedef union { + UINT8 Arg; + UINT8 Local; + UINT64 Integer; + VOID *Buffer; +} AML_METHOD_PARAM_DATA; + +/** structure to hold AML method parameter types + Type - Type of parameter + Data - holds data of parameter + if Type is AmlMethodParamTypeInteger + then Data is of type Integer to hold integer value. + if Type is AmlMethodParamTypeString + then Data contains null terminated string. + If Type is AmlMethodParamTypeArg + then Data contains the Argument number, + 0 to 6 are supported value. + If Type is AmlMethodParamTypeLocal + then Data contains the Local variable number, + 0 to 7 are supported value. + DataSize - for future use +**/ +typedef struct { + AML_METHOD_PARAM_TYPE Type; + AML_METHOD_PARAM_DATA Data; + UINTN DataSize; +} AML_METHOD_PARAM; + /** Parse the definition block. =20 The function parses the whole AML blob. It starts with the ACPI DSDT/SSD= T @@ -1693,4 +1743,66 @@ AmlAddNameStringToNamedPackage ( IN AML_OBJECT_NODE_HANDLE NamedNode ); =20 +/** AML code generation to invoke/call another method. + + This method is subset implementation of MethodInvocation + defined in the ACPI specification 6.5, + section 20.2.5 "Term Objects Encoding". + Added integer, string, ArgObj and LocalObj support. + + Example 1: + AmlCodeGenInvokeMethod ("MET0", 0, NULL, ParentNode); + is equivalent of the following ASL code: + MET0 (); + + Example 2: + AML_METHOD_PARAM Param[4]; + Param[0].Data.Integer =3D 0x100; + Param[0].Type =3D AmlMethodParamTypeInteger; + Param[1].Data.Buffer =3D "TEST"; + Param[1].Type =3D AmlMethodParamTypeString; + Param[2].Data.Arg =3D 0; + Param[2].Type =3D AmlMethodParamTypeArg; + Param[3].Data.Local =3D 2; + Param[3].Type =3D AmlMethodParamTypeLocal; + AmlCodeGenInvokeMethod ("MET0", 4, Param, ParentNode); + + is equivalent of the following ASL code: + MET0 (0x100, "TEST", Arg0, Local2); + + Example 3: + AML_METHOD_PARAM Param[2]; + Param[0].Data.Arg =3D 0; + Param[0].Type =3D AmlMethodParamTypeArg; + Param[1].Data.Integer =3D 0x100; + Param[1].Type =3D AmlMethodParamTypeInteger; + AmlCodeGenMethodRetNameString ("MET2", NULL, 2, TRUE, 0, ParentNode, &= MethodNode); + AmlCodeGenInvokeMethod ("MET3", 2, Param, MethodNode); + + is equivalent of the following ASL code: + Method (MET2, 2, Serialized) + { + MET3 (Arg0, 0x0100) + } + + @param [in] MethodNameString Method name to be called/invoked. + @param [in] NumArgs Number of arguments to be passed, + 0 to 7 are permissible values. + @param [in] Parameters contains the parameter data. + @param [in] ParentNode set ParentNode as the parent + of the node created. + + @retval EFI_SUCCESS Success. + @retval EFI_INVALID_PARAMETER Invalid parameter. + @retval EFI_OUT_OF_RESOURCES Failed to allocate memory. + **/ +EFI_STATUS +EFIAPI +AmlCodeGenInvokeMethod ( + IN CONST CHAR8 *MethodNameString, + IN UINT8 NumArgs, + IN AML_METHOD_PARAM *Parameters OPTIONAL, + IN AML_NODE_HANDLE ParentNode + ); + #endif // AML_LIB_H_ diff --git a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c b/= DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c index a6db34fb97..688eefdcef 100644 --- a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c +++ b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c @@ -2,6 +2,7 @@ AML Code Generation. =20 Copyright (c) 2020 - 2022, Arm Limited. All rights reserved.
+ Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.
=20 SPDX-License-Identifier: BSD-2-Clause-Patent **/ @@ -921,7 +922,7 @@ AmlCodeGenNameUnicodeString ( Status =3D AmlCreateDataNode ( EAmlNodeDataTypeRaw, (CONST UINT8 *)String, - StrSize (String), + (UINT32)StrSize (String), &DataNode ); if (EFI_ERROR (Status)) { @@ -3849,3 +3850,236 @@ exit_handler: =20 return Status; } + +/** AML code generation to invoke/call another method. + + This method is subset implementation of MethodInvocation + defined in the ACPI specification 6.5, + section 20.2.5 "Term Objects Encoding". + Added integer, string, ArgObj and LocalObj support. + + Example 1: + AmlCodeGenInvokeMethod ("MET0", 0, NULL, ParentNode); + is equivalent of the following ASL code: + MET0 (); + + Example 2: + AML_METHOD_PARAM Param[4]; + Param[0].Data.Integer =3D 0x100; + Param[0].Type =3D AmlMethodParamTypeInteger; + Param[1].Data.Buffer =3D "TEST"; + Param[1].Type =3D AmlMethodParamTypeString; + Param[2].Data.Arg =3D 0; + Param[2].Type =3D AmlMethodParamTypeArg; + Param[3].Data.Local =3D 2; + Param[3].Type =3D AmlMethodParamTypeLocal; + AmlCodeGenInvokeMethod ("MET0", 4, Param, ParentNode); + + is equivalent of the following ASL code: + MET0 (0x100, "TEST", Arg0, Local2); + + Example 3: + AML_METHOD_PARAM Param[2]; + Param[0].Data.Arg =3D 0; + Param[0].Type =3D AmlMethodParamTypeArg; + Param[1].Data.Integer =3D 0x100; + Param[1].Type =3D AmlMethodParamTypeInteger; + AmlCodeGenMethodRetNameString ("MET2", NULL, 2, TRUE, 0, ParentNode, &= MethodNode); + AmlCodeGenInvokeMethod ("MET3", 2, Param, MethodNode); + + is equivalent of the following ASL code: + Method (MET2, 2, Serialized) + { + MET3 (Arg0, 0x0100) + } + + @param [in] MethodNameString Method name to be called/invoked. + @param [in] NumArgs Number of arguments to be passed, + 0 to 7 are permissible values. + @param [in] Parameters contains the parameter data. + @param [in] ParentNode set ParentNode as the parent + of the node created. + + @retval EFI_SUCCESS Success. + @retval EFI_INVALID_PARAMETER Invalid parameter. + @retval EFI_OUT_OF_RESOURCES Failed to allocate memory. + **/ +EFI_STATUS +EFIAPI +AmlCodeGenInvokeMethod ( + IN CONST CHAR8 *MethodNameString, + IN UINT8 NumArgs, + IN AML_METHOD_PARAM *Parameters OPTIONAL, + IN AML_NODE_HANDLE ParentNode + ) +{ + EFI_STATUS Status; + UINT8 Index; + CHAR8 *AmlNameString; + UINT32 AmlNameStringSize; + AML_DATA_NODE *DataNode; + AML_OBJECT_NODE *IntNode; + AML_NODE_HANDLE HeadNode; + AML_NODE_HANDLE CurrentNode; + AML_OBJECT_NODE *ObjectNode; + + if ((MethodNameString =3D=3D NULL) || (ParentNode =3D=3D NULL)) { + ASSERT (0); + return EFI_INVALID_PARAMETER; + } + + if ((NumArgs > 7) || + ((Parameters =3D=3D NULL) && (NumArgs > 0))) + { + ASSERT (0); + return EFI_INVALID_PARAMETER; + } + + if (Parameters !=3D NULL) { + /// Validate and convert the Parameters to the stream of node + HeadNode =3D NULL; + CurrentNode =3D NULL; + for (Index =3D 0; Index < NumArgs; Index++) { + switch (Parameters[Index].Type) { + case AmlMethodParamTypeInteger: + IntNode =3D NULL; + Status =3D AmlCodeGenInteger (Parameters[Index].Data.Integer, &= IntNode); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + goto exit_handler; + } + + CurrentNode =3D (AML_NODE_HANDLE)IntNode; + break; + case AmlMethodParamTypeString: + ObjectNode =3D NULL; + if (Parameters[Index].Data.Buffer =3D=3D NULL) { + ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER); + Status =3D EFI_INVALID_PARAMETER; + goto exit_handler; + } + + Status =3D AmlCodeGenString (Parameters[Index].Data.Buffer, &Obj= ectNode); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + goto exit_handler; + } + + CurrentNode =3D (AML_NODE_HANDLE)ObjectNode; + break; + case AmlMethodParamTypeArg: + ObjectNode =3D NULL; + if (Parameters[Index].Data.Arg > (UINT8)(AML_ARG6 - AML_ARG0)) { + ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER); + Status =3D EFI_INVALID_PARAMETER; + goto exit_handler; + } + + Status =3D AmlCreateObjectNode ( + AmlGetByteEncodingByOpCode (AML_ARG0 + Parameters[Ind= ex].Data.Arg, 0), + 0, + &ObjectNode + ); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + goto exit_handler; + } + + CurrentNode =3D (AML_NODE_HANDLE)ObjectNode; + break; + case AmlMethodParamTypeLocal: + ObjectNode =3D NULL; + if (Parameters[Index].Data.Local > (UINT8)(AML_LOCAL7 - AML_LOCA= L0)) { + ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER); + Status =3D EFI_INVALID_PARAMETER; + goto exit_handler; + } + + Status =3D AmlCreateObjectNode ( + AmlGetByteEncodingByOpCode (AML_LOCAL0 + Parameters[I= ndex].Data.Local, 0), + 0, + &ObjectNode + ); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + goto exit_handler; + } + + CurrentNode =3D (AML_NODE_HANDLE)ObjectNode; + break; + default: + ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER); + Status =3D EFI_INVALID_PARAMETER; + goto exit_handler; + break; + } + + if (HeadNode =3D=3D NULL) { + HeadNode =3D CurrentNode; + } else { + Status =3D AmlVarListAddTail ( + HeadNode, + CurrentNode + ); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + goto exit_handler; + } + } + } + } + + /// Create called/invoked method name string + Status =3D ConvertAslNameToAmlName (MethodNameString, &AmlNameString); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + goto exit_handler; + } + + Status =3D AmlGetNameStringSize (AmlNameString, &AmlNameStringSize); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + FreePool (AmlNameString); + goto exit_handler; + } + + DataNode =3D NULL; + Status =3D AmlCreateDataNode ( + EAmlNodeDataTypeNameString, + (UINT8 *)AmlNameString, + AmlNameStringSize, + &DataNode + ); + FreePool (AmlNameString); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + goto exit_handler; + } + + Status =3D AmlVarListAddTail ( + (AML_NODE_HANDLE)ParentNode, + (AML_NODE_HANDLE)DataNode + ); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + goto exit_handler; + } + + Status =3D AmlVarListAddTail ( + (AML_NODE_HANDLE)ParentNode, + HeadNode + ); + if (EFI_ERROR (Status)) { + ASSERT_EFI_ERROR (Status); + goto exit_handler; + } + + return Status; + +exit_handler: + if (HeadNode !=3D NULL) { + AmlDeleteTree (HeadNode); + } + + return Status; +} --=20 2.34.1 -=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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