1 /*++ 2 3 Copyright (c) 2005 - 2006, Intel Corporation. All rights reserved.<BR> 4 This program and the accompanying materials 5 are licensed and made available under the terms and conditions of the BSD License 6 which accompanies this distribution. The full text of the license may be found at 7 http://opensource.org/licenses/bsd-license.php 8 9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 12 Module Name: 13 PcatPciRootBridgeDevicePath.c 14 15 Abstract: 16 17 EFI PCAT PCI Root Bridge Device Path Protocol 18 19 Revision History 20 21 --*/ 22 23 #include "PcatPciRootBridge.h" 24 25 // 26 // Static device path declarations for this driver. 27 // 28 29 typedef struct { 30 ACPI_HID_DEVICE_PATH AcpiDevicePath; 31 EFI_DEVICE_PATH_PROTOCOL EndDevicePath; 32 } EFI_PCI_ROOT_BRIDGE_DEVICE_PATH; 33 34 EFI_PCI_ROOT_BRIDGE_DEVICE_PATH mEfiPciRootBridgeDevicePath = { 35 { 36 { 37 ACPI_DEVICE_PATH, 38 ACPI_DP, 39 { 40 (UINT8) (sizeof(ACPI_HID_DEVICE_PATH)), 41 (UINT8) ((sizeof(ACPI_HID_DEVICE_PATH)) >> 8), 42 } 43 }, 44 EISA_PNP_ID(0x0A03), 45 0 46 }, 47 { 48 END_DEVICE_PATH_TYPE, 49 END_ENTIRE_DEVICE_PATH_SUBTYPE, 50 { 51 END_DEVICE_PATH_LENGTH, 52 0 53 } 54 } 55 }; 56 57 EFI_STATUS 58 PcatRootBridgeDevicePathConstructor ( 59 IN EFI_DEVICE_PATH_PROTOCOL **Protocol, 60 IN UINTN RootBridgeNumber, 61 IN BOOLEAN IsPciExpress 62 ) 63 /*++ 64 65 Routine Description: 66 67 Construct the device path protocol 68 69 Arguments: 70 71 Protocol - protocol to initialize 72 73 Returns: 74 75 None 76 77 --*/ 78 { 79 ACPI_HID_DEVICE_PATH *AcpiDevicePath; 80 81 *Protocol = DuplicateDevicePath((EFI_DEVICE_PATH_PROTOCOL *)(&mEfiPciRootBridgeDevicePath)); 82 83 AcpiDevicePath = (ACPI_HID_DEVICE_PATH *)(*Protocol); 84 85 AcpiDevicePath->UID = (UINT32)RootBridgeNumber; 86 87 if (IsPciExpress) { 88 AcpiDevicePath->HID = EISA_PNP_ID(0x0A08); 89 } 90 91 return EFI_SUCCESS; 92 } 93 94
