1 /** @file 2 Functions declaration for Bus Specific Driver Override protoocl. 3 4 Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 16 #ifndef _EFI_PCI_DRIVER_OVERRRIDE_H_ 17 #define _EFI_PCI_DRIVER_OVERRRIDE_H_ 18 19 #define DRIVER_OVERRIDE_SIGNATURE SIGNATURE_32 ('d', 'r', 'o', 'v') 20 21 // 22 // PCI driver override driver image list 23 // 24 typedef struct { 25 UINT32 Signature; 26 LIST_ENTRY Link; 27 EFI_HANDLE DriverImageHandle; 28 } PCI_DRIVER_OVERRIDE_LIST; 29 30 31 #define DRIVER_OVERRIDE_FROM_LINK(a) \ 32 CR (a, PCI_DRIVER_OVERRIDE_LIST, Link, DRIVER_OVERRIDE_SIGNATURE) 33 34 /** 35 Initializes a PCI Driver Override Instance. 36 37 @param PciIoDevice PCI Device instance. 38 39 **/ 40 VOID 41 InitializePciDriverOverrideInstance ( 42 IN OUT PCI_IO_DEVICE *PciIoDevice 43 ); 44 45 /** 46 Add an overriding driver image. 47 48 @param PciIoDevice Instance of PciIo device. 49 @param DriverImageHandle new added driver image. 50 51 @retval EFI_SUCCESS Successfully added driver. 52 @retval EFI_OUT_OF_RESOURCES No memory resource for new driver instance. 53 @retval other Some error occurred when locating gEfiLoadedImageProtocolGuid. 54 55 **/ 56 EFI_STATUS 57 AddDriver ( 58 IN PCI_IO_DEVICE *PciIoDevice, 59 IN EFI_HANDLE DriverImageHandle 60 ); 61 62 63 /** 64 Uses a bus specific algorithm to retrieve a driver image handle for a controller. 65 66 @param This A pointer to the EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL instance. 67 @param DriverImageHandle On input, a pointer to the previous driver image handle returned 68 by GetDriver(). On output, a pointer to the next driver 69 image handle. Passing in a NULL, will return the first driver 70 image handle. 71 72 @retval EFI_SUCCESS A bus specific override driver is returned in DriverImageHandle. 73 @retval EFI_NOT_FOUND The end of the list of override drivers was reached. 74 A bus specific override driver is not returned in DriverImageHandle. 75 @retval EFI_INVALID_PARAMETER DriverImageHandle is not a handle that was returned on a 76 previous call to GetDriver(). 77 78 **/ 79 EFI_STATUS 80 EFIAPI 81 GetDriver ( 82 IN EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *This, 83 IN OUT EFI_HANDLE *DriverImageHandle 84 ); 85 86 #endif 87
