BasePciSegmentLib.c File Reference

#include "PciSegmentLibCommon.h"

Go to the source code of this file.

Functions
UINTN	PciSegmentLibVirtualAddress (IN UINTN Address)
RETURN_STATUS EFIAPI	PciSegmentRegisterForRuntimeAccess (IN UINTN Address)

Detailed Description

Instance of Base PCI Segment Library that support multi-segment PCI configuration access.

PCI Segment Library that consumes segment information provided by PciSegmentInfoLib to support multi-segment PCI configuration access through enhanced configuration access mechanism.

Copyright (c) 2017, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file BasePciSegmentLib.c.

Function Documentation

PciSegmentLibVirtualAddress()

UINTN PciSegmentLibVirtualAddress

(

IN UINTN

Address

)

Return the virtual address for the physical address.

Parameters

Address

The physical address.

Return values

The	virtual address.

Definition at line 22 of file BasePciSegmentLib.c.

PciSegmentRegisterForRuntimeAccess()

RETURN_STATUS EFIAPI PciSegmentRegisterForRuntimeAccess

(

IN UINTN

Address

)

Register a PCI device so PCI configuration registers may be accessed after SetVirtualAddressMap().

If any reserved bits in Address are set, then ASSERT().

Parameters

Address

The address that encodes the PCI Bus, Device, Function and Register.

Return values

RETURN_SUCCESS	The PCI device was registered for runtime access.
RETURN_UNSUPPORTED	An attempt was made to call this function after ExitBootServices().
RETURN_UNSUPPORTED	The resources required to access the PCI device at runtime could not be mapped.
RETURN_OUT_OF_RESOURCES	There are not enough resources available to complete the registration.

Definition at line 49 of file BasePciSegmentLib.c.