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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 |