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1/** @file\r
2 Definition for Device Path library.\r
3\r
4Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR>\r
5This program and the accompanying materials\r
6are licensed and made available under the terms and conditions of the BSD License\r
7which accompanies this distribution. The full text of the license may be found at\r
8http://opensource.org/licenses/bsd-license.php\r
9\r
10THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
12\r
13**/\r
14\r
15#ifndef _UEFI_DEVICE_PATH_LIB_H_\r
16#define _UEFI_DEVICE_PATH_LIB_H_\r
17#include <Uefi.h>\r
18#include <Protocol/DevicePathUtilities.h>\r
19#include <Protocol/DebugPort.h>\r
20#include <Protocol/DevicePathToText.h>\r
21#include <Protocol/DevicePathFromText.h>\r
22#include <Guid/PcAnsi.h>\r
23#include <Library/DebugLib.h>\r
24#include <Library/PrintLib.h>\r
25#include <Library/BaseLib.h>\r
26#include <Library/BaseMemoryLib.h>\r
27#include <Library/MemoryAllocationLib.h>\r
28#include <Library/UefiBootServicesTableLib.h>\r
29#include <Library/DevicePathLib.h>\r
30#include <Library/PcdLib.h>\r
31\r
32#define IS_COMMA(a) ((a) == L',')\r
33#define IS_HYPHEN(a) ((a) == L'-')\r
34#define IS_DOT(a) ((a) == L'.')\r
35#define IS_LEFT_PARENTH(a) ((a) == L'(')\r
36#define IS_RIGHT_PARENTH(a) ((a) == L')')\r
37#define IS_SLASH(a) ((a) == L'/')\r
38#define IS_NULL(a) ((a) == L'\0')\r
39\r
40\r
41//\r
42// Private Data structure\r
43//\r
44typedef struct {\r
45 CHAR16 *Str;\r
46 UINTN Count;\r
47 UINTN Capacity;\r
48} POOL_PRINT;\r
49\r
50typedef\r
51EFI_DEVICE_PATH_PROTOCOL *\r
52(*DEVICE_PATH_FROM_TEXT) (\r
53 IN CHAR16 *Str\r
54 );\r
55\r
56typedef\r
57VOID\r
58(*DEVICE_PATH_TO_TEXT) (\r
59 IN OUT POOL_PRINT *Str,\r
60 IN VOID *DevicePath,\r
61 IN BOOLEAN DisplayOnly,\r
62 IN BOOLEAN AllowShortcuts\r
63 );\r
64\r
65typedef struct {\r
66 UINT8 Type;\r
67 UINT8 SubType;\r
68 DEVICE_PATH_TO_TEXT Function;\r
69} DEVICE_PATH_TO_TEXT_TABLE;\r
70\r
71typedef struct {\r
72 UINT8 Type;\r
73 CHAR16 *Text;\r
74} DEVICE_PATH_TO_TEXT_GENERIC_TABLE;\r
75\r
76typedef struct {\r
77 CHAR16 *DevicePathNodeText;\r
78 DEVICE_PATH_FROM_TEXT Function;\r
79} DEVICE_PATH_FROM_TEXT_TABLE;\r
80\r
81typedef struct {\r
82 BOOLEAN ClassExist;\r
83 UINT8 Class;\r
84 BOOLEAN SubClassExist;\r
85 UINT8 SubClass;\r
86} USB_CLASS_TEXT;\r
87\r
88#define USB_CLASS_AUDIO 1\r
89#define USB_CLASS_CDCCONTROL 2\r
90#define USB_CLASS_HID 3\r
91#define USB_CLASS_IMAGE 6\r
92#define USB_CLASS_PRINTER 7\r
93#define USB_CLASS_MASS_STORAGE 8\r
94#define USB_CLASS_HUB 9\r
95#define USB_CLASS_CDCDATA 10\r
96#define USB_CLASS_SMART_CARD 11\r
97#define USB_CLASS_VIDEO 14\r
98#define USB_CLASS_DIAGNOSTIC 220\r
99#define USB_CLASS_WIRELESS 224\r
100\r
101#define USB_CLASS_RESERVE 254\r
102#define USB_SUBCLASS_FW_UPDATE 1\r
103#define USB_SUBCLASS_IRDA_BRIDGE 2\r
104#define USB_SUBCLASS_TEST 3\r
105\r
106#define RFC_1700_UDP_PROTOCOL 17\r
107#define RFC_1700_TCP_PROTOCOL 6\r
108\r
109#pragma pack(1)\r
110\r
111typedef struct {\r
112 EFI_DEVICE_PATH_PROTOCOL Header;\r
113 EFI_GUID Guid;\r
114 UINT8 VendorDefinedData[1];\r
115} VENDOR_DEFINED_HARDWARE_DEVICE_PATH;\r
116\r
117typedef struct {\r
118 EFI_DEVICE_PATH_PROTOCOL Header;\r
119 EFI_GUID Guid;\r
120 UINT8 VendorDefinedData[1];\r
121} VENDOR_DEFINED_MESSAGING_DEVICE_PATH;\r
122\r
123typedef struct {\r
124 EFI_DEVICE_PATH_PROTOCOL Header;\r
125 EFI_GUID Guid;\r
126 UINT8 VendorDefinedData[1];\r
127} VENDOR_DEFINED_MEDIA_DEVICE_PATH;\r
128\r
129typedef struct {\r
130 EFI_DEVICE_PATH_PROTOCOL Header;\r
131 UINT32 Hid;\r
132 UINT32 Uid;\r
133 UINT32 Cid;\r
134 CHAR8 HidUidCidStr[3];\r
135} ACPI_EXTENDED_HID_DEVICE_PATH_WITH_STR;\r
136\r
137typedef struct {\r
138 EFI_DEVICE_PATH_PROTOCOL Header;\r
139 UINT16 NetworkProtocol;\r
140 UINT16 LoginOption;\r
141 UINT64 Lun;\r
142 UINT16 TargetPortalGroupTag;\r
143 CHAR8 TargetName[1];\r
144} ISCSI_DEVICE_PATH_WITH_NAME;\r
145\r
146typedef struct {\r
147 EFI_DEVICE_PATH_PROTOCOL Header;\r
148 EFI_GUID Guid;\r
149 UINT8 VendorDefinedData[1];\r
150} VENDOR_DEVICE_PATH_WITH_DATA;\r
151\r
152#pragma pack()\r
153\r
154/**\r
155 Returns the size of a device path in bytes.\r
156\r
157 This function returns the size, in bytes, of the device path data structure \r
158 specified by DevicePath including the end of device path node.\r
159 If DevicePath is NULL or invalid, then 0 is returned.\r
160\r
161 @param DevicePath A pointer to a device path data structure.\r
162\r
163 @retval 0 If DevicePath is NULL or invalid.\r
164 @retval Others The size of a device path in bytes.\r
165\r
166**/\r
167UINTN\r
168EFIAPI\r
169UefiDevicePathLibGetDevicePathSize (\r
170 IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
171 );\r
172\r
173/**\r
174 Creates a new copy of an existing device path.\r
175\r
176 This function allocates space for a new copy of the device path specified by DevicePath. \r
177 If DevicePath is NULL, then NULL is returned. If the memory is successfully \r
178 allocated, then the contents of DevicePath are copied to the newly allocated \r
179 buffer, and a pointer to that buffer is returned. Otherwise, NULL is returned. \r
180 The memory for the new device path is allocated from EFI boot services memory. \r
181 It is the responsibility of the caller to free the memory allocated. \r
182 \r
183 @param DevicePath A pointer to a device path data structure.\r
184\r
185 @retval NULL DevicePath is NULL or invalid.\r
186 @retval Others A pointer to the duplicated device path.\r
187 \r
188**/\r
189EFI_DEVICE_PATH_PROTOCOL *\r
190EFIAPI\r
191UefiDevicePathLibDuplicateDevicePath (\r
192 IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
193 );\r
194\r
195/**\r
196 Creates a new device path by appending a second device path to a first device path.\r
197\r
198 This function creates a new device path by appending a copy of SecondDevicePath \r
199 to a copy of FirstDevicePath in a newly allocated buffer. Only the end-of-device-path \r
200 device node from SecondDevicePath is retained. The newly created device path is \r
201 returned. If FirstDevicePath is NULL, then it is ignored, and a duplicate of \r
202 SecondDevicePath is returned. If SecondDevicePath is NULL, then it is ignored, \r
203 and a duplicate of FirstDevicePath is returned. If both FirstDevicePath and \r
204 SecondDevicePath are NULL, then a copy of an end-of-device-path is returned. \r
205 \r
206 If there is not enough memory for the newly allocated buffer, then NULL is returned.\r
207 The memory for the new device path is allocated from EFI boot services memory. \r
208 It is the responsibility of the caller to free the memory allocated.\r
209\r
210 @param FirstDevicePath A pointer to a device path data structure.\r
211 @param SecondDevicePath A pointer to a device path data structure.\r
212 \r
213 @retval NULL If there is not enough memory for the newly allocated buffer.\r
214 @retval NULL If FirstDevicePath or SecondDevicePath is invalid.\r
215 @retval Others A pointer to the new device path if success.\r
216 Or a copy an end-of-device-path if both FirstDevicePath and SecondDevicePath are NULL.\r
217\r
218**/\r
219EFI_DEVICE_PATH_PROTOCOL *\r
220EFIAPI\r
221UefiDevicePathLibAppendDevicePath (\r
222 IN CONST EFI_DEVICE_PATH_PROTOCOL *FirstDevicePath, OPTIONAL\r
223 IN CONST EFI_DEVICE_PATH_PROTOCOL *SecondDevicePath OPTIONAL\r
224 );\r
225\r
226/**\r
227 Creates a new path by appending the device node to the device path.\r
228\r
229 This function creates a new device path by appending a copy of the device node \r
230 specified by DevicePathNode to a copy of the device path specified by DevicePath \r
231 in an allocated buffer. The end-of-device-path device node is moved after the \r
232 end of the appended device node.\r
233 If DevicePathNode is NULL then a copy of DevicePath is returned.\r
234 If DevicePath is NULL then a copy of DevicePathNode, followed by an end-of-device \r
235 path device node is returned.\r
236 If both DevicePathNode and DevicePath are NULL then a copy of an end-of-device-path \r
237 device node is returned.\r
238 If there is not enough memory to allocate space for the new device path, then \r
239 NULL is returned. \r
240 The memory is allocated from EFI boot services memory. It is the responsibility \r
241 of the caller to free the memory allocated.\r
242\r
243 @param DevicePath A pointer to a device path data structure.\r
244 @param DevicePathNode A pointer to a single device path node.\r
245\r
246 @retval NULL If there is not enough memory for the new device path.\r
247 @retval Others A pointer to the new device path if success.\r
248 A copy of DevicePathNode followed by an end-of-device-path node \r
249 if both FirstDevicePath and SecondDevicePath are NULL.\r
250 A copy of an end-of-device-path node if both FirstDevicePath \r
251 and SecondDevicePath are NULL.\r
252\r
253**/\r
254EFI_DEVICE_PATH_PROTOCOL *\r
255EFIAPI\r
256UefiDevicePathLibAppendDevicePathNode (\r
257 IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath, OPTIONAL\r
258 IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathNode OPTIONAL\r
259 );\r
260\r
261/**\r
262 Creates a new device path by appending the specified device path instance to the specified device\r
263 path.\r
264 \r
265 This function creates a new device path by appending a copy of the device path \r
266 instance specified by DevicePathInstance to a copy of the device path specified \r
267 by DevicePath in a allocated buffer.\r
268 The end-of-device-path device node is moved after the end of the appended device \r
269 path instance and a new end-of-device-path-instance node is inserted between. \r
270 If DevicePath is NULL, then a copy if DevicePathInstance is returned.\r
271 If DevicePathInstance is NULL, then NULL is returned.\r
272 If DevicePath or DevicePathInstance is invalid, then NULL is returned.\r
273 If there is not enough memory to allocate space for the new device path, then \r
274 NULL is returned. \r
275 The memory is allocated from EFI boot services memory. It is the responsibility \r
276 of the caller to free the memory allocated.\r
277 \r
278 @param DevicePath A pointer to a device path data structure.\r
279 @param DevicePathInstance A pointer to a device path instance.\r
280\r
281 @return A pointer to the new device path.\r
282\r
283**/\r
284EFI_DEVICE_PATH_PROTOCOL *\r
285EFIAPI\r
286UefiDevicePathLibAppendDevicePathInstance (\r
287 IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath, OPTIONAL\r
288 IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathInstance OPTIONAL\r
289 );\r
290\r
291/**\r
292 Creates a copy of the current device path instance and returns a pointer to the next device path\r
293 instance.\r
294\r
295 This function creates a copy of the current device path instance. It also updates \r
296 DevicePath to point to the next device path instance in the device path (or NULL \r
297 if no more) and updates Size to hold the size of the device path instance copy.\r
298 If DevicePath is NULL, then NULL is returned.\r
299 If DevicePath points to a invalid device path, then NULL is returned.\r
300 If there is not enough memory to allocate space for the new device path, then \r
301 NULL is returned. \r
302 The memory is allocated from EFI boot services memory. It is the responsibility \r
303 of the caller to free the memory allocated.\r
304 If Size is NULL, then ASSERT().\r
305 \r
306 @param DevicePath On input, this holds the pointer to the current \r
307 device path instance. On output, this holds \r
308 the pointer to the next device path instance \r
309 or NULL if there are no more device path\r
310 instances in the device path pointer to a \r
311 device path data structure.\r
312 @param Size On output, this holds the size of the device \r
313 path instance, in bytes or zero, if DevicePath \r
314 is NULL.\r
315\r
316 @return A pointer to the current device path instance.\r
317\r
318**/\r
319EFI_DEVICE_PATH_PROTOCOL *\r
320EFIAPI\r
321UefiDevicePathLibGetNextDevicePathInstance (\r
322 IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath,\r
323 OUT UINTN *Size\r
324 );\r
325\r
326/**\r
327 Creates a device node.\r
328\r
329 This function creates a new device node in a newly allocated buffer of size \r
330 NodeLength and initializes the device path node header with NodeType and NodeSubType. \r
331 The new device path node is returned.\r
332 If NodeLength is smaller than a device path header, then NULL is returned. \r
333 If there is not enough memory to allocate space for the new device path, then \r
334 NULL is returned. \r
335 The memory is allocated from EFI boot services memory. It is the responsibility \r
336 of the caller to free the memory allocated.\r
337\r
338 @param NodeType The device node type for the new device node.\r
339 @param NodeSubType The device node sub-type for the new device node.\r
340 @param NodeLength The length of the new device node.\r
341\r
342 @return The new device path.\r
343\r
344**/\r
345EFI_DEVICE_PATH_PROTOCOL *\r
346EFIAPI\r
347UefiDevicePathLibCreateDeviceNode (\r
348 IN UINT8 NodeType,\r
349 IN UINT8 NodeSubType,\r
350 IN UINT16 NodeLength\r
351 );\r
352\r
353/**\r
354 Determines if a device path is single or multi-instance.\r
355\r
356 This function returns TRUE if the device path specified by DevicePath is\r
357 multi-instance.\r
358 Otherwise, FALSE is returned.\r
359 If DevicePath is NULL or invalid, then FALSE is returned.\r
360\r
361 @param DevicePath A pointer to a device path data structure.\r
362\r
363 @retval TRUE DevicePath is multi-instance.\r
364 @retval FALSE DevicePath is not multi-instance, or DevicePath \r
365 is NULL or invalid.\r
366\r
367**/\r
368BOOLEAN\r
369EFIAPI\r
370UefiDevicePathLibIsDevicePathMultiInstance (\r
371 IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
372 );\r
373\r
374\r
375/**\r
376 Converts a device path to its text representation.\r
377\r
378 @param DevicePath A Pointer to the device to be converted.\r
379 @param DisplayOnly If DisplayOnly is TRUE, then the shorter text representation\r
380 of the display node is used, where applicable. If DisplayOnly\r
381 is FALSE, then the longer text representation of the display node\r
382 is used.\r
383 @param AllowShortcuts If AllowShortcuts is TRUE, then the shortcut forms of text\r
384 representation for a device node can be used, where applicable.\r
385\r
386 @return A pointer to the allocated text representation of the device path or\r
387 NULL if DeviceNode is NULL or there was insufficient memory.\r
388\r
389**/\r
390CHAR16 *\r
391EFIAPI\r
392UefiDevicePathLibConvertDevicePathToText (\r
393 IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r
394 IN BOOLEAN DisplayOnly,\r
395 IN BOOLEAN AllowShortcuts\r
396 );\r
397\r
398/**\r
399 Converts a device node to its string representation.\r
400\r
401 @param DeviceNode A Pointer to the device node to be converted.\r
402 @param DisplayOnly If DisplayOnly is TRUE, then the shorter text representation\r
403 of the display node is used, where applicable. If DisplayOnly\r
404 is FALSE, then the longer text representation of the display node\r
405 is used.\r
406 @param AllowShortcuts If AllowShortcuts is TRUE, then the shortcut forms of text\r
407 representation for a device node can be used, where applicable.\r
408\r
409 @return A pointer to the allocated text representation of the device node or NULL if DeviceNode\r
410 is NULL or there was insufficient memory.\r
411\r
412**/\r
413CHAR16 *\r
414EFIAPI\r
415UefiDevicePathLibConvertDeviceNodeToText (\r
416 IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode,\r
417 IN BOOLEAN DisplayOnly,\r
418 IN BOOLEAN AllowShortcuts\r
419 );\r
420\r
421/**\r
422 Convert text to the binary representation of a device node.\r
423\r
424 @param TextDeviceNode TextDeviceNode points to the text representation of a device\r
425 node. Conversion starts with the first character and continues\r
426 until the first non-device node character.\r
427\r
428 @return A pointer to the EFI device node or NULL if TextDeviceNode is NULL or there was\r
429 insufficient memory or text unsupported.\r
430\r
431**/\r
432EFI_DEVICE_PATH_PROTOCOL *\r
433EFIAPI\r
434UefiDevicePathLibConvertTextToDeviceNode (\r
435 IN CONST CHAR16 *TextDeviceNode\r
436 );\r
437\r
438/**\r
439 Convert text to the binary representation of a device path.\r
440\r
441\r
442 @param TextDevicePath TextDevicePath points to the text representation of a device\r
443 path. Conversion starts with the first character and continues\r
444 until the first non-device node character.\r
445\r
446 @return A pointer to the allocated device path or NULL if TextDeviceNode is NULL or\r
447 there was insufficient memory.\r
448\r
449**/\r
450EFI_DEVICE_PATH_PROTOCOL *\r
451EFIAPI\r
452UefiDevicePathLibConvertTextToDevicePath (\r
453 IN CONST CHAR16 *TextDevicePath\r
454 );\r
455\r
456#endif\r