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878ddf1f | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | Usb.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Parse usb device configurations.\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | --*/\r | |
23 | \r | |
24 | #include "usbbus.h"\r | |
25 | \r | |
26 | //\r | |
27 | // Here are some internal helper functions\r | |
28 | //\r | |
29 | STATIC\r | |
30 | EFI_STATUS\r | |
31 | GetExpectedDescriptor (\r | |
32 | IN UINT8 *Buffer,\r | |
33 | IN UINTN Length,\r | |
34 | IN UINT8 DescType,\r | |
35 | IN UINT8 DescLength,\r | |
36 | OUT UINTN *ParsedBytes\r | |
37 | );\r | |
38 | \r | |
39 | STATIC\r | |
40 | EFI_STATUS\r | |
41 | ParseThisEndpoint (\r | |
42 | IN ENDPOINT_DESC_LIST_ENTRY *EndpointEntry,\r | |
43 | IN UINT8 *Buffer,\r | |
44 | IN UINTN BufferLength,\r | |
45 | OUT UINTN *ParsedBytes\r | |
46 | );\r | |
47 | \r | |
48 | STATIC\r | |
49 | EFI_STATUS\r | |
50 | ParseThisInterface (\r | |
51 | IN INTERFACE_DESC_LIST_ENTRY *InterfaceEntry,\r | |
52 | IN UINT8 *Buffer,\r | |
53 | IN UINTN *BufferLen,\r | |
54 | OUT UINTN *ParsedBytes\r | |
55 | );\r | |
56 | \r | |
57 | STATIC\r | |
58 | EFI_STATUS\r | |
59 | ParseThisConfig (\r | |
60 | IN CONFIG_DESC_LIST_ENTRY *ConfigDescEntry,\r | |
61 | IN UINT8 *Buffer,\r | |
62 | IN UINTN Length\r | |
63 | );\r | |
64 | \r | |
65 | //\r | |
66 | // Implementations\r | |
67 | //\r | |
68 | BOOLEAN\r | |
69 | IsHub (\r | |
70 | IN USB_IO_CONTROLLER_DEVICE *Dev\r | |
71 | )\r | |
72 | /*++\r | |
73 | \r | |
74 | Routine Description:\r | |
75 | Tell if a usb controller is a hub controller.\r | |
76 | \r | |
77 | Arguments:\r | |
78 | Dev - UsbIoController device structure.\r | |
79 | \r | |
80 | Returns:\r | |
81 | TRUE/FALSE\r | |
82 | --*/\r | |
83 | {\r | |
84 | EFI_USB_INTERFACE_DESCRIPTOR Interface;\r | |
85 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
86 | EFI_USB_ENDPOINT_DESCRIPTOR EndpointDescriptor;\r | |
87 | UINT8 Index;\r | |
88 | \r | |
89 | if (Dev == NULL) {\r | |
90 | return FALSE;\r | |
91 | }\r | |
92 | \r | |
93 | UsbIo = &Dev->UsbIo;\r | |
94 | \r | |
95 | UsbIo->UsbGetInterfaceDescriptor (\r | |
96 | UsbIo,\r | |
97 | &Interface\r | |
98 | );\r | |
99 | \r | |
100 | //\r | |
101 | // Check classcode\r | |
102 | //\r | |
103 | if (Interface.InterfaceClass != 0x09) {\r | |
104 | return FALSE;\r | |
105 | }\r | |
106 | \r | |
107 | //\r | |
108 | // Check protocol\r | |
109 | //\r | |
110 | if (Interface.InterfaceProtocol != 0x0) {\r | |
111 | return FALSE;\r | |
112 | }\r | |
113 | \r | |
114 | for (Index = 0; Index < Interface.NumEndpoints; Index++) {\r | |
115 | UsbIo->UsbGetEndpointDescriptor (\r | |
116 | UsbIo,\r | |
117 | Index,\r | |
118 | &EndpointDescriptor\r | |
119 | );\r | |
120 | \r | |
121 | if ((EndpointDescriptor.EndpointAddress & 0x80) == 0) {\r | |
122 | continue;\r | |
123 | }\r | |
124 | \r | |
125 | if (EndpointDescriptor.Attributes != 0x03) {\r | |
126 | continue;\r | |
127 | }\r | |
128 | \r | |
129 | Dev->HubEndpointAddress = EndpointDescriptor.EndpointAddress;\r | |
130 | return TRUE;\r | |
131 | }\r | |
132 | \r | |
133 | return FALSE;\r | |
134 | }\r | |
135 | \r | |
136 | EFI_STATUS\r | |
137 | UsbGetStringtable (\r | |
138 | IN USB_IO_DEVICE *Dev\r | |
139 | )\r | |
140 | /*++\r | |
141 | \r | |
142 | Routine Description:\r | |
143 | Get the string table stored in a usb device.\r | |
144 | \r | |
145 | Arguments:\r | |
146 | Dev - UsbIoController device structure.\r | |
147 | \r | |
148 | Returns:\r | |
149 | EFI_SUCCESS\r | |
150 | EFI_UNSUPPORTED\r | |
151 | EFI_OUT_OF_RESOURCES\r | |
152 | \r | |
153 | --*/\r | |
154 | {\r | |
155 | EFI_STATUS Result;\r | |
156 | UINT32 Status;\r | |
157 | EFI_USB_SUPPORTED_LANGUAGES *LanguageTable;\r | |
158 | UINT8 *Buffer;\r | |
159 | UINT8 *ptr;\r | |
160 | UINTN Index;\r | |
161 | UINTN LangTableSize;\r | |
162 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
163 | UINT16 TempBuffer;\r | |
164 | \r | |
165 | UsbIo = &(Dev->UsbController[0]->UsbIo);\r | |
166 | \r | |
167 | //\r | |
168 | // We get first 2 byte of langID table,\r | |
169 | // so we can have the whole table length\r | |
170 | //\r | |
171 | Result = UsbGetString (\r | |
172 | UsbIo,\r | |
173 | 0,\r | |
174 | 0,\r | |
175 | &TempBuffer,\r | |
176 | 2,\r | |
177 | &Status\r | |
178 | );\r | |
179 | if (EFI_ERROR (Result)) {\r | |
180 | return EFI_UNSUPPORTED;\r | |
181 | }\r | |
182 | \r | |
183 | LanguageTable = (EFI_USB_SUPPORTED_LANGUAGES *) &TempBuffer;\r | |
184 | \r | |
185 | if (LanguageTable->Length == 0) {\r | |
186 | return EFI_UNSUPPORTED;\r | |
187 | }\r | |
188 | //\r | |
189 | // If length is 2, then there is no string table\r | |
190 | //\r | |
191 | if (LanguageTable->Length == 2) {\r | |
192 | return EFI_UNSUPPORTED;\r | |
193 | }\r | |
194 | \r | |
195 | Buffer = AllocateZeroPool (LanguageTable->Length);\r | |
196 | if (Buffer == NULL) {\r | |
197 | return EFI_OUT_OF_RESOURCES;\r | |
198 | }\r | |
199 | \r | |
200 | //\r | |
201 | // Now we get the whole LangID table\r | |
202 | //\r | |
203 | Result = UsbGetString (\r | |
204 | UsbIo,\r | |
205 | 0,\r | |
206 | 0,\r | |
207 | Buffer,\r | |
208 | LanguageTable->Length,\r | |
209 | &Status\r | |
210 | );\r | |
211 | if (EFI_ERROR (Result)) {\r | |
212 | gBS->FreePool (Buffer);\r | |
213 | return EFI_UNSUPPORTED;\r | |
214 | }\r | |
215 | \r | |
216 | LanguageTable = (EFI_USB_SUPPORTED_LANGUAGES *) Buffer;\r | |
217 | \r | |
218 | //\r | |
219 | // ptr point to the LangID table\r | |
220 | //\r | |
221 | ptr = Buffer + 2;\r | |
222 | LangTableSize = (LanguageTable->Length - 2) / 2;\r | |
223 | \r | |
224 | for (Index = 0; Index < LangTableSize && Index < USB_MAXLANID; Index++) {\r | |
225 | Dev->LangID[Index] = *((UINT16 *) ptr);\r | |
226 | ptr += 2;\r | |
227 | }\r | |
228 | \r | |
229 | gBS->FreePool (Buffer);\r | |
230 | LanguageTable = NULL;\r | |
231 | \r | |
232 | return EFI_SUCCESS;\r | |
233 | }\r | |
234 | \r | |
235 | \r | |
236 | EFI_STATUS\r | |
237 | UsbGetAllConfigurations (\r | |
238 | IN USB_IO_DEVICE *UsbIoDevice\r | |
239 | )\r | |
240 | /*++\r | |
241 | \r | |
242 | Routine Description:\r | |
243 | This function is to parse all the configuration descriptor.\r | |
244 | \r | |
245 | Arguments:\r | |
246 | UsbIoDevice - USB_IO_DEVICE device structure.\r | |
247 | \r | |
248 | Returns:\r | |
249 | EFI_SUCCESS\r | |
250 | EFI_DEVICE_ERROR\r | |
251 | EFI_OUT_OF_RESOURCES \r | |
252 | \r | |
253 | --*/\r | |
254 | {\r | |
255 | EFI_STATUS Result;\r | |
256 | UINT32 Status;\r | |
257 | UINTN Index;\r | |
258 | UINTN TotalLength;\r | |
259 | UINT8 *Buffer;\r | |
260 | CONFIG_DESC_LIST_ENTRY *ConfigDescEntry;\r | |
261 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
262 | \r | |
263 | InitializeListHead (&UsbIoDevice->ConfigDescListHead);\r | |
264 | UsbIo = &(UsbIoDevice->UsbController[0]->UsbIo);\r | |
265 | \r | |
266 | for (Index = 0; Index < UsbIoDevice->DeviceDescriptor.NumConfigurations; Index++) {\r | |
267 | ConfigDescEntry = NULL;\r | |
268 | \r | |
269 | ConfigDescEntry = AllocateZeroPool (sizeof (CONFIG_DESC_LIST_ENTRY));\r | |
270 | if (ConfigDescEntry == NULL) {\r | |
271 | return EFI_OUT_OF_RESOURCES;\r | |
272 | }\r | |
273 | //\r | |
274 | // 1st only get 1st 4 bytes config descriptor,\r | |
275 | // so we can know the whole length\r | |
276 | //\r | |
277 | Result = UsbGetDescriptor (\r | |
278 | UsbIo,\r | |
279 | (UINT16) ((USB_DT_CONFIG << 8) | Index),\r | |
280 | 0,\r | |
281 | 4,\r | |
282 | &ConfigDescEntry->CongfigDescriptor,\r | |
283 | &Status\r | |
284 | );\r | |
285 | if (EFI_ERROR (Result)) {\r | |
286 | DEBUG ((gUSBErrorLevel, "First get config descriptor error\n"));\r | |
287 | gBS->FreePool (ConfigDescEntry);\r | |
288 | return EFI_DEVICE_ERROR;\r | |
289 | }\r | |
290 | \r | |
291 | TotalLength = ConfigDescEntry->CongfigDescriptor.TotalLength;\r | |
292 | \r | |
293 | Buffer = AllocateZeroPool (TotalLength);\r | |
294 | if (Buffer == NULL) {\r | |
295 | gBS->FreePool (ConfigDescEntry);\r | |
296 | return EFI_OUT_OF_RESOURCES;\r | |
297 | }\r | |
298 | //\r | |
299 | // Then we get the total descriptors for this configuration\r | |
300 | //\r | |
301 | Result = UsbGetDescriptor (\r | |
302 | UsbIo,\r | |
303 | (UINT16) ((USB_DT_CONFIG << 8) | Index),\r | |
304 | 0,\r | |
305 | (UINT16) TotalLength,\r | |
306 | Buffer,\r | |
307 | &Status\r | |
308 | );\r | |
309 | if (EFI_ERROR (Result)) {\r | |
310 | DEBUG ((gUSBErrorLevel, "Get whole config descriptor error\n"));\r | |
311 | gBS->FreePool (ConfigDescEntry);\r | |
312 | gBS->FreePool (Buffer);\r | |
313 | return EFI_DEVICE_ERROR;\r | |
314 | }\r | |
315 | \r | |
316 | InitializeListHead (&ConfigDescEntry->InterfaceDescListHead);\r | |
317 | \r | |
318 | //\r | |
319 | // Parse this whole configuration\r | |
320 | //\r | |
321 | Result = ParseThisConfig (ConfigDescEntry, Buffer, TotalLength);\r | |
322 | \r | |
323 | if (EFI_ERROR (Result)) {\r | |
324 | //\r | |
325 | // Ignore this configuration, parse next one\r | |
326 | //\r | |
327 | gBS->FreePool (ConfigDescEntry);\r | |
328 | gBS->FreePool (Buffer);\r | |
329 | continue;\r | |
330 | }\r | |
331 | \r | |
332 | InsertTailList (&UsbIoDevice->ConfigDescListHead, &ConfigDescEntry->Link);\r | |
333 | \r | |
334 | gBS->FreePool (Buffer);\r | |
335 | \r | |
336 | }\r | |
337 | \r | |
338 | return EFI_SUCCESS;\r | |
339 | }\r | |
340 | \r | |
341 | STATIC\r | |
342 | EFI_STATUS\r | |
343 | GetExpectedDescriptor (\r | |
344 | IN UINT8 *Buffer,\r | |
345 | IN UINTN Length,\r | |
346 | IN UINT8 DescType,\r | |
347 | IN UINT8 DescLength,\r | |
348 | OUT UINTN *ParsedBytes\r | |
349 | )\r | |
350 | /*++\r | |
351 | \r | |
352 | Routine Description:\r | |
353 | Get the start position of next wanted descriptor.\r | |
354 | \r | |
355 | Arguments:\r | |
356 | Buffer - Buffer to parse\r | |
357 | Length - Buffer length \r | |
358 | DescType - Descriptor type \r | |
359 | DescLength - Descriptor length\r | |
360 | ParsedBytes - Parsed Bytes to return\r | |
361 | Returns:\r | |
362 | EFI_SUCCESS\r | |
363 | EFI_DEVICE_ERROR\r | |
364 | \r | |
365 | --*/\r | |
366 | {\r | |
367 | UINT16 DescriptorHeader;\r | |
368 | UINT8 Len;\r | |
369 | UINT8 *ptr;\r | |
370 | UINTN Parsed;\r | |
371 | \r | |
372 | Parsed = 0;\r | |
373 | ptr = Buffer;\r | |
374 | \r | |
375 | while (TRUE) {\r | |
376 | //\r | |
377 | // Buffer length should not less than Desc length\r | |
378 | //\r | |
379 | if (Length < DescLength) {\r | |
380 | return EFI_DEVICE_ERROR;\r | |
381 | }\r | |
382 | //\r | |
383 | // DescriptorHeader = *((UINT16 *)ptr), compatible with IPF\r | |
384 | //\r | |
385 | DescriptorHeader = (UINT16) ((*(ptr + 1) << 8) | *ptr);\r | |
386 | \r | |
387 | Len = ptr[0];\r | |
388 | \r | |
389 | //\r | |
390 | // Check to see if it is a start of expected descriptor\r | |
391 | //\r | |
392 | if (DescriptorHeader == ((DescType << 8) | DescLength)) {\r | |
393 | break;\r | |
394 | }\r | |
395 | \r | |
396 | if ((UINT8) (DescriptorHeader >> 8) == DescType) {\r | |
397 | if (Len > DescLength) {\r | |
398 | return EFI_DEVICE_ERROR;\r | |
399 | }\r | |
400 | }\r | |
401 | //\r | |
402 | // Descriptor length should be at least 2\r | |
403 | // and should not exceed the buffer length\r | |
404 | //\r | |
405 | if (Len < 2) {\r | |
406 | return EFI_DEVICE_ERROR;\r | |
407 | }\r | |
408 | \r | |
409 | if (Len > Length) {\r | |
410 | return EFI_DEVICE_ERROR;\r | |
411 | }\r | |
412 | //\r | |
413 | // Skip this mismatch descriptor\r | |
414 | //\r | |
415 | Length -= Len;\r | |
416 | ptr += Len;\r | |
417 | Parsed += Len;\r | |
418 | }\r | |
419 | \r | |
420 | *ParsedBytes = Parsed;\r | |
421 | \r | |
422 | return EFI_SUCCESS;\r | |
423 | }\r | |
424 | \r | |
425 | \r | |
426 | STATIC\r | |
427 | EFI_STATUS\r | |
428 | ParseThisEndpoint (\r | |
429 | IN ENDPOINT_DESC_LIST_ENTRY *EndpointEntry,\r | |
430 | IN UINT8 *Buffer,\r | |
431 | IN UINTN BufferLength,\r | |
432 | OUT UINTN *ParsedBytes\r | |
433 | )\r | |
434 | /*++\r | |
435 | \r | |
436 | Routine Description:\r | |
437 | Get the start position of next wanted endpoint descriptor.\r | |
438 | \r | |
439 | Arguments:\r | |
440 | EndpointEntry - ENDPOINT_DESC_LIST_ENTRY\r | |
441 | Buffer - Buffer to parse \r | |
442 | BufferLength - Buffer Length\r | |
443 | ParsedBytes - Parsed Bytes to return\r | |
444 | Returns:\r | |
445 | EFI_SUCCESS\r | |
446 | EFI_DEVICE_ERROR\r | |
447 | \r | |
448 | --*/\r | |
449 | {\r | |
450 | UINT8 *ptr;\r | |
451 | EFI_STATUS Status;\r | |
452 | UINTN SkipBytes;\r | |
453 | \r | |
454 | //\r | |
455 | // Skip some data for this interface\r | |
456 | //\r | |
457 | Status = GetExpectedDescriptor (\r | |
458 | Buffer,\r | |
459 | BufferLength,\r | |
460 | USB_DT_ENDPOINT,\r | |
461 | sizeof (EFI_USB_ENDPOINT_DESCRIPTOR),\r | |
462 | &SkipBytes\r | |
463 | );\r | |
464 | \r | |
465 | if (EFI_ERROR (Status)) {\r | |
466 | return Status;\r | |
467 | }\r | |
468 | \r | |
469 | ptr = Buffer + SkipBytes;\r | |
470 | *ParsedBytes = SkipBytes;\r | |
471 | \r | |
472 | CopyMem (\r | |
473 | &EndpointEntry->EndpointDescriptor,\r | |
474 | ptr,\r | |
475 | sizeof (EFI_USB_ENDPOINT_DESCRIPTOR)\r | |
476 | );\r | |
477 | \r | |
478 | *ParsedBytes += sizeof (EFI_USB_ENDPOINT_DESCRIPTOR);\r | |
479 | \r | |
480 | return EFI_SUCCESS;\r | |
481 | }\r | |
482 | \r | |
483 | STATIC\r | |
484 | EFI_STATUS\r | |
485 | ParseThisInterface (\r | |
486 | IN INTERFACE_DESC_LIST_ENTRY *InterfaceEntry,\r | |
487 | IN UINT8 *Buffer,\r | |
488 | IN UINTN *BufferLen,\r | |
489 | OUT UINTN *ParsedBytes\r | |
490 | )\r | |
491 | /*++\r | |
492 | \r | |
493 | Routine Description:\r | |
494 | Get the start position of next wanted interface descriptor.\r | |
495 | \r | |
496 | Arguments:\r | |
497 | InterfaceEntry - INTERFACE_DESC_LIST_ENTRY\r | |
498 | Buffer - Buffer to parse \r | |
499 | BufferLength - Buffer Length\r | |
500 | ParsedBytes - Parsed Bytes to return\r | |
501 | \r | |
502 | Returns:\r | |
503 | EFI_SUCCESS\r | |
504 | EFI_DEVICE_ERROR\r | |
505 | \r | |
506 | --*/\r | |
507 | {\r | |
508 | UINT8 *ptr;\r | |
509 | UINTN SkipBytes;\r | |
510 | UINTN Index;\r | |
511 | UINTN Length;\r | |
512 | UINTN Parsed;\r | |
513 | ENDPOINT_DESC_LIST_ENTRY *EndpointEntry;\r | |
514 | EFI_STATUS Status;\r | |
515 | \r | |
516 | Parsed = 0;\r | |
517 | \r | |
518 | //\r | |
519 | // Skip some data for this interface\r | |
520 | //\r | |
521 | Status = GetExpectedDescriptor (\r | |
522 | Buffer,\r | |
523 | *BufferLen,\r | |
524 | USB_DT_INTERFACE,\r | |
525 | sizeof (EFI_USB_INTERFACE_DESCRIPTOR),\r | |
526 | &SkipBytes\r | |
527 | );\r | |
528 | \r | |
529 | if (EFI_ERROR (Status)) {\r | |
530 | return Status;\r | |
531 | }\r | |
532 | \r | |
533 | ptr = Buffer + SkipBytes;\r | |
534 | *ParsedBytes = SkipBytes;\r | |
535 | \r | |
536 | //\r | |
537 | // Copy the interface descriptor\r | |
538 | //\r | |
539 | CopyMem (\r | |
540 | &InterfaceEntry->InterfaceDescriptor,\r | |
541 | ptr,\r | |
542 | sizeof (EFI_USB_INTERFACE_DESCRIPTOR)\r | |
543 | );\r | |
544 | \r | |
545 | ptr = Buffer + sizeof (EFI_USB_INTERFACE_DESCRIPTOR);\r | |
546 | *ParsedBytes += sizeof (EFI_USB_INTERFACE_DESCRIPTOR);\r | |
547 | \r | |
548 | InitializeListHead (&InterfaceEntry->EndpointDescListHead);\r | |
549 | \r | |
550 | Length = *BufferLen - SkipBytes - sizeof (EFI_USB_INTERFACE_DESCRIPTOR);\r | |
551 | \r | |
552 | for (Index = 0; Index < InterfaceEntry->InterfaceDescriptor.NumEndpoints; Index++) {\r | |
553 | EndpointEntry = AllocateZeroPool (sizeof (ENDPOINT_DESC_LIST_ENTRY));\r | |
554 | if (EndpointEntry == NULL) {\r | |
555 | return EFI_OUT_OF_RESOURCES;\r | |
556 | }\r | |
557 | \r | |
558 | //\r | |
559 | // Parses all the endpoint descriptors within this interface.\r | |
560 | //\r | |
561 | Status = ParseThisEndpoint (EndpointEntry, ptr, Length, &Parsed);\r | |
562 | \r | |
563 | if (EFI_ERROR (Status)) {\r | |
564 | gBS->FreePool (EndpointEntry);\r | |
565 | return Status;\r | |
566 | }\r | |
567 | \r | |
568 | InsertTailList (\r | |
569 | &InterfaceEntry->EndpointDescListHead,\r | |
570 | &EndpointEntry->Link\r | |
571 | );\r | |
572 | \r | |
573 | Length -= Parsed;\r | |
574 | ptr += Parsed;\r | |
575 | *ParsedBytes += Parsed;\r | |
576 | }\r | |
577 | \r | |
578 | return EFI_SUCCESS;\r | |
579 | }\r | |
580 | \r | |
581 | STATIC\r | |
582 | EFI_STATUS\r | |
583 | ParseThisConfig (\r | |
584 | IN CONFIG_DESC_LIST_ENTRY *ConfigDescEntry,\r | |
585 | IN UINT8 *Buffer,\r | |
586 | IN UINTN Length\r | |
587 | )\r | |
588 | /*++\r | |
589 | \r | |
590 | Routine Description:\r | |
591 | Parse the current configuration descriptior.\r | |
592 | \r | |
593 | Arguments:\r | |
594 | ConfigDescEntry - CONFIG_DESC_LIST_ENTRY\r | |
595 | Buffer - Buffer to parse \r | |
596 | Length - Buffer Length\r | |
597 | \r | |
598 | Returns\r | |
599 | EFI_SUCCESS\r | |
600 | EFI_DEVICE_ERROR\r | |
601 | \r | |
602 | --*/\r | |
603 | {\r | |
604 | UINT8 *ptr;\r | |
605 | UINT8 NumInterface;\r | |
606 | UINTN Index;\r | |
607 | INTERFACE_DESC_LIST_ENTRY *InterfaceEntry;\r | |
608 | UINTN SkipBytes;\r | |
609 | UINTN Parsed;\r | |
610 | EFI_STATUS Status;\r | |
611 | UINTN LengthLeft;\r | |
612 | \r | |
613 | Parsed = 0;\r | |
614 | \r | |
615 | //\r | |
616 | // First skip the current config descriptor;\r | |
617 | //\r | |
618 | Status = GetExpectedDescriptor (\r | |
619 | Buffer,\r | |
620 | Length,\r | |
621 | USB_DT_CONFIG,\r | |
622 | sizeof (EFI_USB_CONFIG_DESCRIPTOR),\r | |
623 | &SkipBytes\r | |
624 | );\r | |
625 | \r | |
626 | if (EFI_ERROR (Status)) {\r | |
627 | return Status;\r | |
628 | }\r | |
629 | \r | |
630 | ptr = Buffer + SkipBytes;\r | |
631 | \r | |
632 | CopyMem (\r | |
633 | &ConfigDescEntry->CongfigDescriptor,\r | |
634 | ptr,\r | |
635 | sizeof (EFI_USB_CONFIG_DESCRIPTOR)\r | |
636 | );\r | |
637 | \r | |
638 | NumInterface = ConfigDescEntry->CongfigDescriptor.NumInterfaces;\r | |
639 | \r | |
640 | //\r | |
641 | // Skip size of Configuration Descriptor\r | |
642 | //\r | |
643 | ptr += sizeof (EFI_USB_CONFIG_DESCRIPTOR);\r | |
644 | \r | |
645 | LengthLeft = Length - SkipBytes - sizeof (EFI_USB_CONFIG_DESCRIPTOR);\r | |
646 | \r | |
647 | for (Index = 0; Index < NumInterface; Index++) {\r | |
648 | //\r | |
649 | // Parse all Interface\r | |
650 | //\r | |
651 | InterfaceEntry = AllocateZeroPool (sizeof (INTERFACE_DESC_LIST_ENTRY));\r | |
652 | if (InterfaceEntry == NULL) {\r | |
653 | return EFI_OUT_OF_RESOURCES;\r | |
654 | }\r | |
655 | \r | |
656 | Status = ParseThisInterface (InterfaceEntry, ptr, &LengthLeft, &Parsed);\r | |
657 | if (EFI_ERROR (Status)) {\r | |
658 | gBS->FreePool (InterfaceEntry);\r | |
659 | return Status;\r | |
660 | }\r | |
661 | \r | |
662 | InsertTailList (\r | |
663 | &ConfigDescEntry->InterfaceDescListHead,\r | |
664 | &InterfaceEntry->Link\r | |
665 | );\r | |
666 | \r | |
667 | //\r | |
668 | // Parsed for next interface\r | |
669 | //\r | |
670 | LengthLeft -= Parsed;\r | |
671 | ptr += Parsed;\r | |
672 | }\r | |
673 | //\r | |
674 | // Parse for additional alt setting;\r | |
675 | //\r | |
676 | return EFI_SUCCESS;\r | |
677 | }\r | |
678 | \r | |
679 | EFI_STATUS\r | |
680 | UsbSetConfiguration (\r | |
681 | IN USB_IO_DEVICE *UsbIoDev,\r | |
682 | IN UINTN ConfigurationValue\r | |
683 | )\r | |
684 | /*++\r | |
685 | \r | |
686 | Routine Description:\r | |
687 | Set the device to a configuration value.\r | |
688 | \r | |
689 | Arguments:\r | |
690 | UsbIoDev - USB_IO_DEVICE to be set configuration\r | |
691 | ConfigrationValue - The configuration value to be set to that device\r | |
692 | \r | |
693 | Returns:\r | |
694 | EFI_SUCCESS\r | |
695 | EFI_DEVICE_ERROR\r | |
696 | \r | |
697 | --*/\r | |
698 | {\r | |
699 | LIST_ENTRY *NextEntry;\r | |
700 | CONFIG_DESC_LIST_ENTRY *ConfigEntry;\r | |
701 | UINT32 Status;\r | |
702 | EFI_STATUS Result;\r | |
703 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
704 | \r | |
705 | UsbIo = &(UsbIoDev->UsbController[0]->UsbIo);\r | |
706 | NextEntry = UsbIoDev->ConfigDescListHead.ForwardLink;\r | |
707 | \r | |
708 | while (NextEntry != &UsbIoDev->ConfigDescListHead) {\r | |
709 | //\r | |
710 | // Get one entry\r | |
711 | //\r | |
712 | ConfigEntry = (CONFIG_DESC_LIST_ENTRY *) NextEntry;\r | |
713 | if (ConfigEntry->CongfigDescriptor.ConfigurationValue == ConfigurationValue) {\r | |
714 | //\r | |
715 | // Find one, set to the active configuration\r | |
716 | //\r | |
717 | UsbIoDev->ActiveConfig = ConfigEntry;\r | |
718 | break;\r | |
719 | }\r | |
720 | \r | |
721 | NextEntry = NextEntry->ForwardLink;\r | |
722 | }\r | |
723 | //\r | |
724 | // Next Entry should not be null\r | |
725 | //\r | |
726 | Result = UsbSetDeviceConfiguration (\r | |
727 | UsbIo,\r | |
728 | (UINT16) ConfigurationValue,\r | |
729 | &Status\r | |
730 | );\r | |
731 | \r | |
732 | return Result;\r | |
733 | }\r | |
734 | \r | |
735 | EFI_STATUS\r | |
736 | UsbSetDefaultConfiguration (\r | |
737 | IN USB_IO_DEVICE *UsbIoDev\r | |
738 | )\r | |
739 | /*++\r | |
740 | \r | |
741 | Routine Description:\r | |
742 | Set the device to a default configuration value.\r | |
743 | \r | |
744 | Arguments:\r | |
745 | UsbIoDev - USB_IO_DEVICE to be set configuration\r | |
746 | \r | |
747 | Returns\r | |
748 | EFI_SUCCESS\r | |
749 | EFI_DEVICE_ERROR\r | |
750 | \r | |
751 | --*/\r | |
752 | {\r | |
753 | CONFIG_DESC_LIST_ENTRY *ConfigEntry;\r | |
754 | UINT16 ConfigValue;\r | |
755 | LIST_ENTRY *NextEntry;\r | |
756 | \r | |
757 | if (IsListEmpty (&UsbIoDev->ConfigDescListHead)) {\r | |
758 | return EFI_DEVICE_ERROR;\r | |
759 | }\r | |
760 | \r | |
761 | NextEntry = UsbIoDev->ConfigDescListHead.ForwardLink;\r | |
762 | \r | |
763 | ConfigEntry = (CONFIG_DESC_LIST_ENTRY *) NextEntry;\r | |
764 | ConfigValue = ConfigEntry->CongfigDescriptor.ConfigurationValue;\r | |
765 | \r | |
766 | return UsbSetConfiguration (UsbIoDev, ConfigValue);\r | |
767 | }\r | |
768 | \r | |
769 | VOID\r | |
770 | UsbDestroyAllConfiguration (\r | |
771 | IN USB_IO_DEVICE *UsbIoDevice\r | |
772 | )\r | |
773 | /*++\r | |
774 | \r | |
775 | Routine Description:\r | |
776 | Delete all configuration data when device is not used.\r | |
777 | \r | |
778 | Arguments:\r | |
779 | UsbIoDevice - USB_IO_DEVICE to be set configuration\r | |
780 | \r | |
781 | Returns:\r | |
782 | N/A\r | |
783 | \r | |
784 | --*/\r | |
785 | {\r | |
786 | CONFIG_DESC_LIST_ENTRY *ConfigEntry;\r | |
787 | INTERFACE_DESC_LIST_ENTRY *InterfaceEntry;\r | |
788 | ENDPOINT_DESC_LIST_ENTRY *EndpointEntry;\r | |
789 | LIST_ENTRY *NextEntry;\r | |
790 | \r | |
791 | //\r | |
792 | // Delete all configuration descriptor data\r | |
793 | //\r | |
794 | ConfigEntry = (CONFIG_DESC_LIST_ENTRY *) UsbIoDevice->ConfigDescListHead.ForwardLink;\r | |
795 | \r | |
796 | while (ConfigEntry != (CONFIG_DESC_LIST_ENTRY *) &UsbIoDevice->ConfigDescListHead) {\r | |
797 | //\r | |
798 | // Delete all its interface descriptors\r | |
799 | //\r | |
800 | InterfaceEntry = (INTERFACE_DESC_LIST_ENTRY *) ConfigEntry->InterfaceDescListHead.ForwardLink;\r | |
801 | \r | |
802 | while (InterfaceEntry != (INTERFACE_DESC_LIST_ENTRY *) &ConfigEntry->InterfaceDescListHead) {\r | |
803 | //\r | |
804 | // Delete all its endpoint descriptors\r | |
805 | //\r | |
806 | EndpointEntry = (ENDPOINT_DESC_LIST_ENTRY *) InterfaceEntry->EndpointDescListHead.ForwardLink;\r | |
807 | while (EndpointEntry != (ENDPOINT_DESC_LIST_ENTRY *) &InterfaceEntry->EndpointDescListHead) {\r | |
808 | NextEntry = ((LIST_ENTRY *) EndpointEntry)->ForwardLink;\r | |
809 | RemoveEntryList ((LIST_ENTRY *) EndpointEntry);\r | |
810 | gBS->FreePool (EndpointEntry);\r | |
811 | EndpointEntry = (ENDPOINT_DESC_LIST_ENTRY *) NextEntry;\r | |
812 | }\r | |
813 | \r | |
814 | NextEntry = ((LIST_ENTRY *) InterfaceEntry)->ForwardLink;\r | |
815 | RemoveEntryList ((LIST_ENTRY *) InterfaceEntry);\r | |
816 | gBS->FreePool (InterfaceEntry);\r | |
817 | InterfaceEntry = (INTERFACE_DESC_LIST_ENTRY *) NextEntry;\r | |
818 | }\r | |
819 | \r | |
820 | NextEntry = ((LIST_ENTRY *) ConfigEntry)->ForwardLink;\r | |
821 | RemoveEntryList ((LIST_ENTRY *) ConfigEntry);\r | |
822 | gBS->FreePool (ConfigEntry);\r | |
823 | ConfigEntry = (CONFIG_DESC_LIST_ENTRY *) NextEntry;\r | |
824 | }\r | |
825 | }\r |