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/** @file
Root Complex parser.
Copyright (c) 2025, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Reference(s):
- linux/Documentation/devicetree/bindings/pci/host-generic-pci.yaml
**/
#pragma once
/** CM_ARM_ROOT_COMPLEX_NODE parser function.
The following structure is populated:
typedef struct CmArmRootComplexNode {
CM_OBJECT_TOKEN Token;
UINT32 IdMappingCount; // {Populated}
CM_OBJECT_TOKEN IdMappingToken; // {Populated}
UINT32 CacheCoherent; // {Populated}
UINT8 AllocationHints; // {default = 0}
UINT8 MemoryAccessFlags; // {Populated}
UINT32 AtsAttribute; // {Populated}
UINT32 PciSegmentNumber; // {Populated}
UINT8 MemoryAddressSize; // {Populated}
UINT16 PasidCapabilities; // {default = 0}
UINT32 Flags; // {default = 0}
UINT32 Identifier; // {Populated}
} CM_ARM_ROOT_COMPLEX_NODE;
A parser parses a Device Tree to populate a specific CmObj type. None,
one or many CmObj can be created by the parser.
The created CmObj are then handed to the parser's caller through the
HW_INFO_ADD_OBJECT interface.
This can also be a dispatcher. I.e. a function that not parsing a
Device Tree but calling other parsers.
@param [in] FdtParserHandle A handle to the parser instance.
@param [in] FdtBranch When searching for DT node name, restrict
the search to this Device Tree branch.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_ABORTED An error occurred.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_NOT_FOUND Not found.
@retval EFI_UNSUPPORTED Unsupported.
**/
EFI_STATUS
EFIAPI
ArmPciRootComplexParser (
IN CONST FDT_HW_INFO_PARSER_HANDLE FdtParserHandle,
IN INT32 FdtBranch
);
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