]>
Commit | Line | Data |
---|---|---|
024b1029 | 1 | /** @file\r |
2 | Thunk driver's entry that install filter for DataRecord.\r | |
3 | \r | |
584d5652 HT |
4 | Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>\r |
5 | This program and the accompanying materials\r | |
024b1029 | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "Thunk.h"\r | |
16 | \r | |
17 | //\r | |
18 | // Global variables\r | |
19 | //\r | |
20 | LIST_ENTRY mStructureList;\r | |
21 | \r | |
22 | /**\r | |
23 | Entry Point of thunk driver.\r | |
24 | \r | |
25 | @param[in] ImageHandle Image handle of this driver.\r | |
26 | @param[in] SystemTable Pointer to EFI system table.\r | |
27 | \r | |
28 | @retval EFI_SUCCESS The event handlers were registered.\r | |
29 | @retval EFI_DEVICE_ERROR Failed to register the event handlers\r | |
30 | **/ \r | |
31 | EFI_STATUS\r | |
32 | EFIAPI\r | |
33 | ThunkEntry (\r | |
34 | IN EFI_HANDLE ImageHandle,\r | |
35 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
36 | )\r | |
37 | {\r | |
38 | EFI_STATUS Status;\r | |
39 | EFI_DATA_HUB_PROTOCOL *DataHub;\r | |
40 | EFI_EVENT FilterEvent;\r | |
41 | \r | |
42 | Status = gBS->LocateProtocol (&gEfiDataHubProtocolGuid, NULL, (VOID**) &DataHub);\r | |
43 | ASSERT_EFI_ERROR (Status);\r | |
44 | ASSERT (DataHub != NULL);\r | |
45 | \r | |
46 | InitializeListHead (&mStructureList);\r | |
47 | \r | |
48 | //\r | |
49 | // Register SmBios Data Filter Function.\r | |
50 | // This function is notified at TPL_CALLBACK.\r | |
51 | //\r | |
52 | Status = gBS->CreateEvent (\r | |
53 | EVT_NOTIFY_SIGNAL,\r | |
54 | TPL_CALLBACK,\r | |
55 | SmbiosDataFilter,\r | |
56 | NULL,\r | |
57 | &FilterEvent\r | |
58 | );\r | |
59 | if (EFI_ERROR (Status)) {\r | |
60 | return Status;\r | |
61 | }\r | |
62 | \r | |
63 | Status = DataHub->RegisterFilterDriver (\r | |
64 | DataHub,\r | |
65 | FilterEvent,\r | |
66 | TPL_APPLICATION,\r | |
67 | EFI_DATA_RECORD_CLASS_DATA,\r | |
68 | NULL\r | |
69 | );\r | |
70 | if (EFI_ERROR (Status)) {\r | |
71 | gBS->CloseEvent (FilterEvent);\r | |
72 | return Status;\r | |
73 | }\r | |
74 | \r | |
75 | return Status;\r | |
76 | \r | |
77 | } \r | |
78 | \r | |
79 | /**\r | |
80 | Smbios data filter function. This function is invoked when there is data records\r | |
81 | available in the Data Hub. \r | |
82 | \r | |
83 | @param Event The event that is signaled.\r | |
84 | @param Context not used here.\r | |
85 | **/\r | |
86 | VOID\r | |
87 | EFIAPI\r | |
88 | SmbiosDataFilter (\r | |
89 | IN EFI_EVENT Event,\r | |
90 | IN VOID *Context\r | |
91 | )\r | |
92 | {\r | |
93 | EFI_STATUS Status;\r | |
94 | EFI_DATA_HUB_PROTOCOL *DataHub;\r | |
95 | EFI_HANDLE DataHubHandle;\r | |
96 | UINTN HandleSize;\r | |
97 | UINT64 MonotonicCount;\r | |
98 | EFI_DATA_RECORD_HEADER *Record;\r | |
99 | \r | |
100 | Status = EFI_SUCCESS;\r | |
101 | DataHub = NULL;\r | |
102 | \r | |
103 | //\r | |
104 | // Get the Data Hub Protocol. Assume only one instance\r | |
105 | // of Data Hub Protocol is availabe in the system.\r | |
106 | //\r | |
107 | HandleSize = sizeof (EFI_HANDLE);\r | |
108 | \r | |
109 | Status = gBS->LocateHandle (\r | |
110 | ByProtocol,\r | |
111 | &gEfiDataHubProtocolGuid,\r | |
112 | NULL,\r | |
113 | &HandleSize,\r | |
114 | &DataHubHandle\r | |
115 | );\r | |
116 | \r | |
117 | if (EFI_ERROR (Status)) {\r | |
118 | goto Done;\r | |
119 | }\r | |
120 | \r | |
121 | Status = gBS->HandleProtocol (\r | |
122 | DataHubHandle,\r | |
123 | &gEfiDataHubProtocolGuid,\r | |
124 | (VOID **) &DataHub\r | |
125 | );\r | |
126 | \r | |
127 | if (EFI_ERROR (Status)) {\r | |
128 | goto Done;\r | |
129 | }\r | |
130 | //\r | |
131 | // Get all available data records from data hub\r | |
132 | //\r | |
133 | MonotonicCount = 0;\r | |
134 | Record = NULL;\r | |
135 | \r | |
136 | do {\r | |
137 | \r | |
138 | Status = DataHub->GetNextRecord (\r | |
139 | DataHub,\r | |
140 | &MonotonicCount,\r | |
141 | &Event,\r | |
142 | &Record\r | |
143 | );\r | |
144 | \r | |
145 | if (!EFI_ERROR (Status)) {\r | |
146 | if (Record->DataRecordClass == EFI_DATA_RECORD_CLASS_DATA) {\r | |
147 | \r | |
148 | //\r | |
149 | // It's of expected Data Type. Process it.\r | |
150 | //\r | |
151 | SmbiosProcessDataRecord (Record);\r | |
152 | }\r | |
153 | }\r | |
154 | } while (!EFI_ERROR (Status) && (MonotonicCount != 0));\r | |
155 | \r | |
156 | Done:\r | |
157 | \r | |
158 | return ;\r | |
159 | \r | |
160 | }\r |