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/** @file
Ssdt PCIe Support Library
Copyright (c) 2021 - 2022, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef SSDT_PCIE_SUPPORT_LIB_H_
#define SSDT_PCIE_SUPPORT_LIB_H_
#pragma pack(1)
/** Structure used to map integer to an index.
*/
typedef struct MappingTable {
/// Mapping table.
/// Contains the Index <-> integer mapping
UINT32 *Table;
/// Last used index of the Table.
/// Bound by MaxIndex.
UINT32 LastIndex;
/// Number of entries in the Table.
UINT32 MaxIndex;
} MAPPING_TABLE;
#pragma pack()
/** Add an _OSC template method to the PciNode.
The _OSC method is provided as an AML blob. The blob is
parsed and attached at the end of the PciNode list of variable elements.
@param [in] PciInfo Pci device information.
@param [in, out] PciNode Pci node to amend.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_OUT_OF_RESOURCES Could not allocate memory.
**/
EFI_STATUS
EFIAPI
AddOscMethod (
IN CONST CM_ARCH_COMMON_PCI_CONFIG_SPACE_INFO *PciInfo,
IN OUT AML_OBJECT_NODE_HANDLE PciNode
);
/** Generate Pci slots devices.
PCI Firmware Specification - Revision 3.3,
s4.8 "Generic ACPI PCI Slot Description" requests to describe the PCI slot
used. It should be possible to enumerate them, but this is additional
information.
@param [in] PciInfo Pci device information.
@param [in] MappingTable The mapping table structure.
@param [in] Uid Unique Id of the Pci device.
@param [in, out] PciNode Pci node to amend.
@retval EFI_SUCCESS Success.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
**/
EFI_STATUS
EFIAPI
GeneratePciSlots (
IN CONST CM_ARCH_COMMON_PCI_CONFIG_SPACE_INFO *PciInfo,
IN CONST MAPPING_TABLE *MappingTable,
IN UINT32 Uid,
IN OUT AML_OBJECT_NODE_HANDLE PciNode
);
#endif // SSDT_PCIE_SUPPORT_LIB_H_
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