From: "Sami Mujawar" <sami.mujawar@arm.com>
To: Pierre.Gondois@arm.com, devel@edk2.groups.io,
Alexei Fedorov <Alexei.Fedorov@arm.com>
Cc: Akanksha Jain <akanksha.jain2@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>, nd <nd@arm.com>
Subject: Re: [PATCH v1 09/13] DynamicTablesPkg: AML code generation for a Method returning a NS
Date: Fri, 1 Oct 2021 16:23:54 +0100 [thread overview]
Message-ID: <75fcbce8-4d42-3677-afa8-6857fd01be19@arm.com> (raw)
In-Reply-To: <20210623114039.24491-10-Pierre.Gondois@arm.com>
Hi Pierre,
Please find my response inline marked [SAMI].
Regards,
Sami Mujawar
On 23/06/2021 12:40 PM, Pierre.Gondois@arm.com wrote:
> From: Pierre Gondois <Pierre.Gondois@arm.com>
>
> Add AmlCodeGenMethodRetNameString() to generate AML code to create
> a Method returning a NameString (NS).
>
> AmlCodeGenMethodRetNameString (
> "MET0", "_CRS", 1, TRUE, 3, ParentNode, NewObjectNode
> );
> is equivalent of the following ASL code:
> Method(MET0, 1, Serialized, 3) {
> Return (_CRS)
> }
>
> Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
> ---
> .../Include/Library/AmlLib/AmlLib.h | 53 +++++++++
> .../Common/AmlLib/CodeGen/AmlCodeGen.c | 106 ++++++++++++++++++
> 2 files changed, 159 insertions(+)
>
> diff --git a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
> index 6824cf3a6c82..7740aac24470 100644
> --- a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
> +++ b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
> @@ -619,6 +619,59 @@ AmlCodeGenScope (
> OUT AML_OBJECT_NODE_HANDLE * NewObjectNode OPTIONAL
> );
>
> +/** AML code generation for a method returning a NameString.
> +
> + AmlCodeGenMethodRetNameString (
> + "MET0", "_CRS", 1, TRUE, 3, ParentNode, NewObjectNode
> + );
> + is equivalent of the following ASL code:
> + Method(MET0, 1, Serialized, 3) {
> + Return (_CRS)
> + }
> +
> + The ASL parameters "ReturnType" and "ParameterTypes" are not asked
> + in this function. They are optional parameters in ASL.
> +
> + @ingroup CodeGenApis
> +
> + @param [in] MethodNameString The new Method's name.
> + Must be a NULL-terminated ASL NameString
> + e.g.: "MET0", "_SB.MET0", etc.
> + The input string is copied.
> + @param [in] ReturnedNameString The name of the object returned by the
> + method. Optional parameter, can be:
> + - NULL (ignored).
> + - A NULL-terminated ASL NameString.
> + e.g.: "MET0", "_SB.MET0", etc.
> + The input string is copied.
[SAMI] I think this should be a mandatory parameter and corresponding
change is needed to the function code.
> + @param [in] NumArgs Number of arguments.
> + Must be 0 <= NumArgs <= 6.
> + @param [in] IsSerialized TRUE is equivalent to Serialized.
> + FALSE is equivalent to NotSerialized.
> + Default is NotSerialized in ASL spec.
> + @param [in] SyncLevel Synchronization level for the method.
> + Must be 0 <= SyncLevel <= 15.
> + Default is 0 in ASL.
> + @param [in] ParentNode If provided, set ParentNode as the parent
> + of the node created.
> + @param [out] NewObjectNode If success, contains the created node.
> +
> + @retval EFI_SUCCESS Success.
> + @retval EFI_INVALID_PARAMETER Invalid parameter.
> + @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
> +**/
> +EFI_STATUS
> +EFIAPI
> +AmlCodeGenMethodRetNameString (
> + IN CONST CHAR8 * MethodNameString,
> + IN CONST CHAR8 * ReturnedNameString, OPTIONAL
> + IN UINT8 NumArgs,
> + IN BOOLEAN IsSerialized,
> + IN UINT8 SyncLevel,
> + IN AML_NODE_HANDLE ParentNode, OPTIONAL
> + OUT AML_OBJECT_NODE_HANDLE * NewObjectNode OPTIONAL
> + );
> +
> // DEPRECATED APIS
> #ifndef DISABLE_NEW_DEPRECATED_INTERFACES
>
> diff --git a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
> index 75dadbaf4ac3..a9922871c311 100644
> --- a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
> +++ b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
> @@ -1315,3 +1315,109 @@ exit_handler:
> }
> return Status;
> }
> +
> +/** AML code generation for a method returning a NameString.
> +
> + AmlCodeGenMethodRetNameString (
> + "MET0", "_CRS", 1, TRUE, 3, ParentNode, NewObjectNode
> + );
> + is equivalent of the following ASL code:
> + Method(MET0, 1, Serialized, 3) {
> + Return (_CRS)
> + }
> +
> + The ASL parameters "ReturnType" and "ParameterTypes" are not asked
> + in this function. They are optional parameters in ASL.
> +
> + @param [in] MethodNameString The new Method's name.
> + Must be a NULL-terminated ASL NameString
> + e.g.: "MET0", "_SB.MET0", etc.
> + The input string is copied.
> + @param [in] ReturnedNameString The name of the object returned by the
> + method. Optional parameter, can be:
> + - NULL (ignored).
> + - A NULL-terminated ASL NameString.
> + e.g.: "MET0", "_SB.MET0", etc.
> + The input string is copied.
> + @param [in] NumArgs Number of arguments.
> + Must be 0 <= NumArgs <= 6.
> + @param [in] IsSerialized TRUE is equivalent to Serialized.
> + FALSE is equivalent to NotSerialized.
> + Default is NotSerialized in ASL spec.
> + @param [in] SyncLevel Synchronization level for the method.
> + Must be 0 <= SyncLevel <= 15.
> + Default is 0 in ASL.
> + @param [in] ParentNode If provided, set ParentNode as the parent
> + of the node created.
> + @param [out] NewObjectNode If success, contains the created node.
> +
> + @retval EFI_SUCCESS Success.
> + @retval EFI_INVALID_PARAMETER Invalid parameter.
> + @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
> +**/
> +EFI_STATUS
> +EFIAPI
> +AmlCodeGenMethodRetNameString (
> + IN CONST CHAR8 * MethodNameString,
> + IN CONST CHAR8 * ReturnedNameString, OPTIONAL
> + IN UINT8 NumArgs,
> + IN BOOLEAN IsSerialized,
> + IN UINT8 SyncLevel,
> + IN AML_NODE_HANDLE ParentNode, OPTIONAL
> + OUT AML_OBJECT_NODE_HANDLE * NewObjectNode OPTIONAL
> + )
> +{
> + EFI_STATUS Status;
> + AML_OBJECT_NODE_HANDLE MethodNode;
> +
> + if ((MethodNameString == NULL) ||
> + ((ParentNode == NULL) && (NewObjectNode == NULL))) {
> + ASSERT (0);
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + // Create a Method named MethodNameString.
> + Status = AmlCodeGenMethod (
> + MethodNameString,
> + NumArgs,
> + IsSerialized,
> + SyncLevel,
> + NULL,
> + &MethodNode
> + );
> + if (EFI_ERROR (Status)) {
> + ASSERT (0);
> + return Status;
> + }
> +
> + // Return ReturnedNameString if provided.
> + if (ReturnedNameString != NULL) {
> + Status = AmlCodeGenReturnNameString (
> + ReturnedNameString,
> + (AML_NODE_HANDLE)MethodNode,
> + NULL
> + );
> + if (EFI_ERROR (Status)) {
> + ASSERT (0);
> + goto error_handler;
> + }
> + }
> +
> + Status = LinkNode (
> + MethodNode,
> + ParentNode,
> + NewObjectNode
> + );
> + if (EFI_ERROR (Status)) {
> + ASSERT (0);
> + goto error_handler;
> + }
> +
> + return Status;
> +
> +error_handler:
> + if (MethodNode != NULL) {
> + AmlDeleteTree ((AML_NODE_HANDLE)MethodNode);
> + }
> + return Status;
> +}
next prev parent reply other threads:[~2021-10-01 15:24 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-23 11:40 [PATCH v1 00/13] Create a SSDT CPU topology generator PierreGondois
2021-06-23 11:40 ` [PATCH v1 01/13] DynamicTablesPkg: Make AmlNodeGetIntegerValue public PierreGondois
2021-10-01 14:48 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 02/13] DynamicTablesPkg: AML Code generation for Register() PierreGondois
2021-10-01 12:25 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 03/13] DynamicTablesPkg: AML Code generation for Resource data EndTag PierreGondois
2021-10-01 12:48 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 04/13] DynamicTablesPkg: AML code generation for a Package PierreGondois
2021-10-01 12:55 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 05/13] DynamicTablesPkg: Helper function to compute package length PierreGondois
2021-10-01 14:24 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 06/13] DynamicTablesPkg: AML code generation for a ResourceTemplate PierreGondois
2021-10-01 14:34 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 07/13] DynamicTablesPkg: AML code generation for a Method PierreGondois
2021-10-01 14:52 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 08/13] DynamicTablesPkg: AML code generation to Return a NameString PierreGondois
2021-10-01 15:13 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 09/13] DynamicTablesPkg: AML code generation for a Method returning a NS PierreGondois
2021-10-01 15:23 ` Sami Mujawar [this message]
2021-10-06 13:33 ` PierreGondois
2021-06-23 11:40 ` [PATCH v1 09/13] DynamicTablesPkg: AML code generation to create " PierreGondois
2021-06-23 11:45 ` [edk2-devel] " PierreGondois
2021-06-23 11:40 ` [PATCH v1 10/13] DynamicTablesPkg: AML code generation for a _LPI object PierreGondois
2021-10-01 15:31 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 11/13] DynamicTablesPkg: AML code generation to add an _LPI state PierreGondois
2021-10-01 15:43 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 12/13] DynamicTablesPkg: Add CM_ARM_LPI_INFO object PierreGondois
2021-10-05 14:39 ` Sami Mujawar
2021-06-23 11:40 ` [PATCH v1 13/13] DynamicTablesPkg: SSDT CPU topology and LPI state generator PierreGondois
2021-10-05 14:38 ` Sami Mujawar
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