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67 lines
2.7 KiB
C
67 lines
2.7 KiB
C
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/** @file
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Bus Specific Driver Override protocol as defined in the UEFI 2.0 specification.
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Bus drivers that have a bus specific algorithm for matching drivers to controllers are
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required to produce this protocol for each controller. For example, a PCI Bus Driver will produce an
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instance of this protocol for every PCI controller that has a PCI option ROM that contains one or
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more UEFI drivers. The protocol instance is attached to the handle of the PCI controller.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL_H_
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#define _EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL_H_
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///
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/// Global ID for the Bus Specific Driver Override Protocol
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///
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#define EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL_GUID \
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{ \
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0x3bc1b285, 0x8a15, 0x4a82, {0xaa, 0xbf, 0x4d, 0x7d, 0x13, 0xfb, 0x32, 0x65 } \
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}
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typedef struct _EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL;
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//
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// Prototypes for the Bus Specific Driver Override Protocol
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//
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/**
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Uses a bus specific algorithm to retrieve a driver image handle for a controller.
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@param This A pointer to the EFI_BUS_SPECIFIC_DRIVER_
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OVERRIDE_PROTOCOL instance.
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@param DriverImageHandle On input, a pointer to the previous driver image handle returned
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by GetDriver(). On output, a pointer to the next driver
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image handle. Passing in a NULL, will return the first driver
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image handle.
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@retval EFI_SUCCESS A bus specific override driver is returned in DriverImageHandle.
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@retval EFI_NOT_FOUND The end of the list of override drivers was reached.
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A bus specific override driver is not returned in DriverImageHandle.
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@retval EFI_INVALID_PARAMETER DriverImageHandle is not a handle that was returned on a
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previous call to GetDriver().
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_GET_DRIVER)(
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IN EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *This,
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IN OUT EFI_HANDLE *DriverImageHandle
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);
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///
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/// This protocol matches one or more drivers to a controller. This protocol is produced by a bus driver,
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/// and it is installed on the child handles of buses that require a bus specific algorithm for matching
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/// drivers to controllers.
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///
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struct _EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL {
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EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_GET_DRIVER GetDriver;
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};
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extern EFI_GUID gEfiBusSpecificDriverOverrideProtocolGuid;
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#endif
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