d250d408cf
Arm GIC v3/v4 optionally includes support for GIC Interrupt Translation Service (ITS). The GIC ITS Structure is part of the Multiple APIC Description Table (MADT) that describes the GIC Interrupt Translation service to the OS. The GIC Interrupt Translation Service information is described in the platform Device Tree, the bindings for which can be found at: - linux/Documentation/devicetree/bindings/interrupt-controller/ arm,gic-v3.yaml The FdtHwInfoParser implements a GIC ITS Parser that parses the platform Device Tree to create CM_ARM_GIC_ITS_INFO objects which are encapsulated in a Configuration Manager descriptor object and added to the platform information repository. The platform Configuration Manager can then utilise this information when generating the MADT table. Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/** @file
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Arm Gic Interrupt Translation Service Parser.
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Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Reference(s):
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- linux/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml
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**/
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#ifndef ARM_GIC_ITS_PARSER_H_
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#define ARM_GIC_ITS_PARSER_H_
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/** CM_ARM_GIC_ITS_INFO parser function.
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This parser expects FdtBranch to be a Gic interrupt-controller node.
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Gic version must be v3 or higher.
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typedef struct CmArmGicItsInfo {
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UINT32 GicItsId; // {Populated}
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UINT64 PhysicalBaseAddress; // {Populated}
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UINT32 ProximityDomain; // {default = 0}
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} CM_ARM_GIC_ITS_INFO;
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A parser parses a Device Tree to populate a specific CmObj type. None,
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one or many CmObj can be created by the parser.
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The created CmObj are then handed to the parser's caller through the
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HW_INFO_ADD_OBJECT interface.
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This can also be a dispatcher. I.e. a function that not parsing a
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Device Tree but calling other parsers.
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@param [in] FdtParserHandle A handle to the parser instance.
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@param [in] FdtBranch When searching for DT node name, restrict
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the search to this Device Tree branch.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_ABORTED An error occurred.
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@retval EFI_INVALID_PARAMETER Invalid parameter.
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@retval EFI_NOT_FOUND Not found.
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@retval EFI_UNSUPPORTED Unsupported.
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**/
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EFI_STATUS
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EFIAPI
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ArmGicItsInfoParser (
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IN CONST FDT_HW_INFO_PARSER_HANDLE FdtParserHandle,
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IN INT32 FdtBranch
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);
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#endif // ARM_GIC_ITS_PARSER_H_
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