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Expose the UID value to GeneratePciSlots(). This is needed for some cases for example: https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports#identifying-externally-exposed-pcie-root-ports Name (_DSD, Package () { ToUUID("EFCC06CC-73AC-4BC3-BFF0-76143807C389"), Package () { Package (2) {"ExternalFacingPort", 1}, Package (2) {"UID", 0}, } }) Signed-off-by: Jeff Brasen <jbrasen@nvidia.com> Reviewed-by: Pierre Gondois <pierre.gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/** @file
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Ssdt PCIe Support Library
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Copyright (c) 2021 - 2022, Arm Limited. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef SSDT_PCIE_SUPPORT_LIB_H_
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#define SSDT_PCIE_SUPPORT_LIB_H_
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#pragma pack(1)
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/** Structure used to map integer to an index.
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*/
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typedef struct MappingTable {
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/// Mapping table.
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/// Contains the Index <-> integer mapping
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UINT32 *Table;
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/// Last used index of the Table.
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/// Bound by MaxIndex.
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UINT32 LastIndex;
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/// Number of entries in the Table.
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UINT32 MaxIndex;
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} MAPPING_TABLE;
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#pragma pack()
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/** Add an _OSC template method to the PciNode.
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The _OSC method is provided as an AML blob. The blob is
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parsed and attached at the end of the PciNode list of variable elements.
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@param [in] PciInfo Pci device information.
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@param [in, out] PciNode Pci node to amend.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_INVALID_PARAMETER Invalid parameter.
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@retval EFI_OUT_OF_RESOURCES Could not allocate memory.
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**/
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EFI_STATUS
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EFIAPI
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AddOscMethod (
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IN CONST CM_ARM_PCI_CONFIG_SPACE_INFO *PciInfo,
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IN OUT AML_OBJECT_NODE_HANDLE PciNode
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);
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/** Generate Pci slots devices.
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PCI Firmware Specification - Revision 3.3,
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s4.8 "Generic ACPI PCI Slot Description" requests to describe the PCI slot
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used. It should be possible to enumerate them, but this is additional
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information.
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@param [in] PciInfo Pci device information.
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@param [in] MappingTable The mapping table structure.
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@param [in] Uid Unique Id of the Pci device.
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@param [in, out] PciNode Pci node to amend.
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@retval EFI_SUCCESS Success.
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@retval EFI_INVALID_PARAMETER Invalid parameter.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
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**/
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EFI_STATUS
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EFIAPI
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GeneratePciSlots (
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IN CONST CM_ARM_PCI_CONFIG_SPACE_INFO *PciInfo,
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IN CONST MAPPING_TABLE *MappingTable,
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IN UINT32 Uid,
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IN OUT AML_OBJECT_NODE_HANDLE PciNode
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);
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#endif // SSDT_PCIE_SUPPORT_LIB_H_
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