PciDriverOverride.c File Reference

#include "PciBus.h"

Go to the source code of this file.

Functions
VOID	InitializePciDriverOverrideInstance (IN OUT PCI_IO_DEVICE *PciIoDevice)
EFI_HANDLE	LocateImageHandle (IN EFI_DEVICE_PATH_PROTOCOL *ImagePath)
EFI_STATUS EFIAPI	GetDriver (IN EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *This, IN OUT EFI_HANDLE *DriverImageHandle)
EFI_STATUS	AddDriver (IN PCI_IO_DEVICE *PciIoDevice, IN EFI_HANDLE DriverImageHandle, IN EFI_DEVICE_PATH_PROTOCOL *DriverImagePath)

Detailed Description

Functions implementation for Bus Specific Driver Override protocol.

Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file PciDriverOverride.c.

Function Documentation

AddDriver()

EFI_STATUS AddDriver	(	IN PCI_IO_DEVICE *	PciIoDevice,
		IN EFI_HANDLE	DriverImageHandle,
		IN EFI_DEVICE_PATH_PROTOCOL *	DriverImagePath
	)

Add an overriding driver image.

Parameters

PciIoDevice	Instance of PciIo device.
DriverImageHandle	Image handle of newly added driver image.
DriverImagePath	Device path of newly added driver image.

Return values

EFI_SUCCESS	Successfully added driver.
EFI_OUT_OF_RESOURCES	No memory resource for new driver instance.
other	Some error occurred when locating gEfiLoadedImageProtocolGuid.

Definition at line 163 of file PciDriverOverride.c.

GetDriver()

EFI_STATUS EFIAPI GetDriver	(	IN EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *	This,
		IN OUT EFI_HANDLE *	DriverImageHandle
	)

Uses a bus specific algorithm to retrieve a driver image handle for a controller.

Parameters

This	A pointer to the EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL instance.
DriverImageHandle	On input, a pointer to the previous driver image handle returned by GetDriver(). On output, a pointer to the next driver image handle. Passing in a NULL, will return the first driver image handle.

Return values

EFI_SUCCESS	A bus specific override driver is returned in DriverImageHandle.
EFI_NOT_FOUND	The end of the list of override drivers was reached. A bus specific override driver is not returned in DriverImageHandle.
EFI_INVALID_PARAMETER	DriverImageHandle is not a handle that was returned on a previous call to GetDriver().

Definition at line 96 of file PciDriverOverride.c.

InitializePciDriverOverrideInstance()

VOID InitializePciDriverOverrideInstance

(

IN OUT PCI_IO_DEVICE *

PciIoDevice

)

Initializes a PCI Driver Override Instance.

Parameters

PciIoDevice

PCI Device instance.

Definition at line 18 of file PciDriverOverride.c.

LocateImageHandle()

EFI_HANDLE LocateImageHandle

(

IN EFI_DEVICE_PATH_PROTOCOL *

ImagePath

)

Find the image handle whose path equals to ImagePath.

Parameters

ImagePath

Image path.

Returns

Image handle.

Definition at line 33 of file PciDriverOverride.c.