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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 | UsbIo.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | USB I/O Abstraction Driver\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | --*/\r | |
23 | \r | |
24 | #include "usbbus.h"\r | |
25 | \r | |
26 | //\r | |
27 | // USB I/O Support Function Prototypes\r | |
28 | //\r | |
29 | STATIC\r | |
30 | EFI_STATUS\r | |
31 | EFIAPI\r | |
32 | UsbControlTransfer (\r | |
33 | IN EFI_USB_IO_PROTOCOL *This,\r | |
34 | IN EFI_USB_DEVICE_REQUEST *Request,\r | |
35 | IN EFI_USB_DATA_DIRECTION Direction,\r | |
36 | IN UINT32 Timeout,\r | |
37 | IN OUT VOID *Data, OPTIONAL\r | |
38 | IN UINTN DataLength, OPTIONAL\r | |
39 | OUT UINT32 *Status\r | |
40 | );\r | |
41 | \r | |
42 | STATIC\r | |
43 | EFI_STATUS\r | |
44 | EFIAPI\r | |
45 | UsbBulkTransfer (\r | |
46 | IN EFI_USB_IO_PROTOCOL *This,\r | |
47 | IN UINT8 DeviceEndpoint,\r | |
48 | IN OUT VOID *Data,\r | |
49 | IN OUT UINTN *DataLength,\r | |
50 | IN UINTN Timeout,\r | |
51 | OUT UINT32 *Status\r | |
52 | );\r | |
53 | \r | |
54 | STATIC\r | |
55 | EFI_STATUS\r | |
56 | EFIAPI\r | |
57 | UsbAsyncInterruptTransfer (\r | |
58 | IN EFI_USB_IO_PROTOCOL * This,\r | |
59 | IN UINT8 DeviceEndpoint,\r | |
60 | IN BOOLEAN IsNewTransfer,\r | |
61 | IN UINTN PollingInterval, OPTIONAL\r | |
62 | IN UINTN DataLength, OPTIONAL\r | |
63 | IN EFI_ASYNC_USB_TRANSFER_CALLBACK InterruptCallBack, OPTIONAL\r | |
64 | IN VOID *Context OPTIONAL\r | |
65 | );\r | |
66 | \r | |
67 | STATIC\r | |
68 | EFI_STATUS\r | |
69 | EFIAPI\r | |
70 | UsbSyncInterruptTransfer (\r | |
71 | IN EFI_USB_IO_PROTOCOL *This,\r | |
72 | IN UINT8 DeviceEndpoint,\r | |
73 | IN OUT VOID *Data,\r | |
74 | IN OUT UINTN *DataLength,\r | |
75 | IN UINTN Timeout,\r | |
76 | OUT UINT32 *Status\r | |
77 | );\r | |
78 | \r | |
79 | STATIC\r | |
80 | EFI_STATUS\r | |
81 | EFIAPI\r | |
82 | UsbIsochronousTransfer (\r | |
83 | IN EFI_USB_IO_PROTOCOL *This,\r | |
84 | IN UINT8 DeviceEndpoint,\r | |
85 | IN OUT VOID *Data,\r | |
86 | IN UINTN DataLength,\r | |
87 | OUT UINT32 *Status\r | |
88 | );\r | |
89 | \r | |
90 | STATIC\r | |
91 | EFI_STATUS\r | |
92 | EFIAPI\r | |
93 | UsbAsyncIsochronousTransfer (\r | |
94 | IN EFI_USB_IO_PROTOCOL * This,\r | |
95 | IN UINT8 DeviceEndpoint,\r | |
96 | IN OUT VOID *Data,\r | |
97 | IN UINTN DataLength,\r | |
98 | IN EFI_ASYNC_USB_TRANSFER_CALLBACK IsochronousCallBack,\r | |
99 | IN VOID *Context OPTIONAL\r | |
100 | );\r | |
101 | \r | |
878ddf1f | 102 | STATIC\r |
103 | EFI_STATUS\r | |
104 | EFIAPI\r | |
105 | UsbGetDeviceDescriptor (\r | |
106 | IN EFI_USB_IO_PROTOCOL *This,\r | |
107 | OUT EFI_USB_DEVICE_DESCRIPTOR *DeviceDescriptor\r | |
108 | );\r | |
109 | \r | |
110 | STATIC\r | |
111 | EFI_STATUS\r | |
112 | EFIAPI\r | |
113 | UsbGetActiveConfigDescriptor (\r | |
114 | IN EFI_USB_IO_PROTOCOL *This,\r | |
115 | OUT EFI_USB_CONFIG_DESCRIPTOR *ConfigurationDescriptor\r | |
116 | );\r | |
117 | \r | |
118 | STATIC\r | |
119 | EFI_STATUS\r | |
120 | EFIAPI\r | |
121 | UsbGetInterfaceDescriptor (\r | |
122 | IN EFI_USB_IO_PROTOCOL *This,\r | |
123 | OUT EFI_USB_INTERFACE_DESCRIPTOR *InterfaceDescriptor\r | |
124 | );\r | |
125 | \r | |
126 | STATIC\r | |
127 | EFI_STATUS\r | |
128 | EFIAPI\r | |
129 | UsbGetEndpointDescriptor (\r | |
130 | IN EFI_USB_IO_PROTOCOL *This,\r | |
131 | IN UINT8 EndpointIndex,\r | |
132 | OUT EFI_USB_ENDPOINT_DESCRIPTOR *EndpointDescriptor\r | |
133 | );\r | |
134 | \r | |
135 | STATIC\r | |
136 | EFI_STATUS\r | |
137 | EFIAPI\r | |
138 | UsbGetStringDescriptor (\r | |
139 | IN EFI_USB_IO_PROTOCOL *This,\r | |
140 | IN UINT16 LangID,\r | |
141 | IN UINT8 StringIndex,\r | |
142 | OUT CHAR16 **String\r | |
143 | );\r | |
144 | \r | |
145 | STATIC\r | |
146 | EFI_STATUS\r | |
147 | EFIAPI\r | |
148 | UsbGetSupportedLanguages (\r | |
149 | IN EFI_USB_IO_PROTOCOL *This,\r | |
150 | OUT UINT16 **LangIDTable,\r | |
151 | OUT UINT16 *TableSize\r | |
152 | );\r | |
153 | \r | |
154 | //\r | |
155 | // USB I/O Interface structure\r | |
156 | //\r | |
157 | STATIC EFI_USB_IO_PROTOCOL UsbIoInterface = {\r | |
158 | UsbControlTransfer,\r | |
159 | UsbBulkTransfer,\r | |
160 | UsbAsyncInterruptTransfer,\r | |
161 | UsbSyncInterruptTransfer,\r | |
162 | UsbIsochronousTransfer,\r | |
163 | UsbAsyncIsochronousTransfer,\r | |
164 | UsbGetDeviceDescriptor,\r | |
165 | UsbGetActiveConfigDescriptor,\r | |
166 | UsbGetInterfaceDescriptor,\r | |
167 | UsbGetEndpointDescriptor,\r | |
168 | UsbGetStringDescriptor,\r | |
169 | UsbGetSupportedLanguages,\r | |
170 | UsbPortReset\r | |
171 | };\r | |
172 | \r | |
173 | VOID\r | |
174 | InitializeUsbIoInstance (\r | |
175 | IN USB_IO_CONTROLLER_DEVICE *UsbIoController\r | |
176 | )\r | |
71a62114 | 177 | /*++\r |
178 | \r | |
179 | Routine Description:\r | |
180 | \r | |
181 | Initialize the instance of UsbIo controller\r | |
182 | \r | |
183 | Arguments:\r | |
184 | \r | |
185 | UsbIoController - A pointer to controller structure of UsbIo\r | |
186 | \r | |
187 | Returns:\r | |
188 | \r | |
189 | --*/\r | |
878ddf1f | 190 | {\r |
191 | //\r | |
192 | // Copy EFI_USB_IO protocol instance\r | |
193 | //\r | |
194 | CopyMem (\r | |
195 | &UsbIoController->UsbIo,\r | |
196 | &UsbIoInterface,\r | |
197 | sizeof (EFI_USB_IO_PROTOCOL)\r | |
198 | );\r | |
199 | }\r | |
200 | //\r | |
201 | // Implementation\r | |
202 | //\r | |
203 | STATIC\r | |
204 | EFI_STATUS\r | |
205 | EFIAPI\r | |
206 | UsbControlTransfer (\r | |
207 | IN EFI_USB_IO_PROTOCOL *This,\r | |
208 | IN EFI_USB_DEVICE_REQUEST *Request,\r | |
209 | IN EFI_USB_DATA_DIRECTION Direction,\r | |
210 | IN UINT32 Timeout,\r | |
211 | IN OUT VOID *Data, OPTIONAL\r | |
212 | IN UINTN DataLength, OPTIONAL\r | |
213 | OUT UINT32 *Status\r | |
214 | )\r | |
215 | /*++\r | |
216 | \r | |
217 | Routine Description:\r | |
218 | This function is used to manage a USB device with a control transfer pipe.\r | |
219 | \r | |
220 | Arguments:\r | |
221 | This - Indicates calling context.\r | |
222 | Request - A pointer to the USB device request that will be sent to\r | |
223 | the USB device.\r | |
224 | Direction - Indicates the data direction.\r | |
225 | Data - A pointer to the buffer of data that will be transmitted\r | |
226 | to USB device or received from USB device.\r | |
227 | Timeout - Indicates the transfer should be completed within this time\r | |
228 | frame.\r | |
229 | DataLength - The size, in bytes, of the data buffer specified by Data.\r | |
230 | Status - A pointer to the result of the USB transfer.\r | |
231 | \r | |
232 | Returns:\r | |
233 | EFI_SUCCESS\r | |
234 | EFI_INVALID_PARAMETER\r | |
235 | EFI_OUT_OF_RESOURCES\r | |
236 | EFI_TIMEOUT\r | |
237 | EFI_DEVICE_ERROR\r | |
238 | \r | |
239 | --*/\r | |
240 | {\r | |
241 | USB_IO_CONTROLLER_DEVICE *UsbIoController;\r | |
562d2849 | 242 | \r |
878ddf1f | 243 | EFI_STATUS RetStatus;\r |
562d2849 | 244 | USB_IO_DEVICE *UsbIoDev;\r |
878ddf1f | 245 | UINT8 MaxPacketLength;\r |
246 | UINT32 TransferResult;\r | |
247 | BOOLEAN Disconnected;\r | |
248 | //\r | |
249 | // Parameters Checking\r | |
250 | //\r | |
251 | if (Status == NULL) {\r | |
252 | return EFI_INVALID_PARAMETER;\r | |
253 | }\r | |
254 | \r | |
255 | //\r | |
256 | // leave the HostController's ControlTransfer\r | |
257 | // to perform other parameters checking\r | |
258 | //\r | |
259 | UsbIoController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (This);\r | |
562d2849 | 260 | UsbIoDev = UsbIoController->UsbDevice;\r |
261 | \r | |
262 | MaxPacketLength = UsbIoDev->DeviceDescriptor.MaxPacketSize0;\r | |
878ddf1f | 263 | \r |
264 | \r | |
265 | if (Request->Request == USB_DEV_CLEAR_FEATURE && \r | |
266 | Request->RequestType == 0x02 && \r | |
267 | Request->Value == EfiUsbEndpointHalt) {\r | |
268 | //\r | |
269 | //Reduce the remove delay time for system response\r | |
270 | //\r | |
271 | IsDeviceDisconnected (UsbIoController, &Disconnected);\r | |
272 | if (!EFI_ERROR (Status) && Disconnected == TRUE) {\r | |
273 | DEBUG ((gUSBErrorLevel, "Device is disconnected when trying reset\n"));\r | |
274 | return EFI_DEVICE_ERROR;\r | |
275 | }\r | |
276 | }\r | |
878ddf1f | 277 | //\r |
278 | // using HostController's ControlTransfer to complete the request\r | |
279 | //\r | |
562d2849 | 280 | RetStatus = UsbVirtualHcControlTransfer (\r |
281 | UsbIoDev->BusController,\r | |
282 | UsbIoDev->DeviceAddress,\r | |
283 | UsbIoDev->DeviceSpeed,\r | |
284 | MaxPacketLength,\r | |
285 | Request,\r | |
286 | Direction,\r | |
287 | Data,\r | |
288 | &DataLength,\r | |
289 | (UINTN) Timeout,\r | |
290 | UsbIoDev->Translator,\r | |
291 | &TransferResult\r | |
292 | );\r | |
293 | \r | |
878ddf1f | 294 | *Status = TransferResult;\r |
295 | \r | |
296 | if (Request->Request == USB_DEV_CLEAR_FEATURE && \r | |
297 | Request->RequestType == 0x02 && \r | |
298 | Request->Value == EfiUsbEndpointHalt) {\r | |
299 | //\r | |
300 | // This is a UsbClearEndpointHalt request\r | |
301 | // Need to clear data toggle\r | |
302 | // Request.Index == EndpointAddress\r | |
303 | //\r | |
304 | if (!EFI_ERROR (RetStatus) && TransferResult == EFI_USB_NOERROR) {\r | |
305 | SetDataToggleBit (\r | |
306 | This,\r | |
307 | (UINT8) Request->Index,\r | |
308 | 0\r | |
309 | );\r | |
310 | }\r | |
311 | }\r | |
312 | return RetStatus;\r | |
313 | }\r | |
314 | \r | |
315 | STATIC\r | |
316 | EFI_STATUS\r | |
317 | EFIAPI\r | |
318 | UsbBulkTransfer (\r | |
319 | IN EFI_USB_IO_PROTOCOL *This,\r | |
320 | IN UINT8 DeviceEndpoint,\r | |
321 | IN OUT VOID *Data,\r | |
322 | IN OUT UINTN *DataLength,\r | |
323 | IN UINTN Timeout,\r | |
324 | OUT UINT32 *Status\r | |
325 | )\r | |
326 | /*++\r | |
327 | \r | |
328 | Routine Description:\r | |
329 | This function is used to manage a USB device with the bulk transfer pipe.\r | |
330 | \r | |
331 | Arguments:\r | |
332 | This - Indicates calling context.\r | |
333 | DeviceEndpoint - The destination USB device endpoint to which the device\r | |
334 | request is being sent.\r | |
335 | Data - A pointer to the buffer of data that will be transmitted\r | |
336 | to USB device or received from USB device.\r | |
337 | DataLength - On input, the size, in bytes, of the data buffer\r | |
338 | specified by Data. On output, the number of bytes that\r | |
339 | were actually transferred.\r | |
340 | Timeout - Indicates the transfer should be completed within this\r | |
341 | time frame.\r | |
342 | Status - This parameter indicates the USB transfer status.\r | |
343 | \r | |
344 | Returns:\r | |
345 | EFI_SUCCESS\r | |
346 | EFI_INVALID_PARAMETER\r | |
347 | EFI_OUT_OF_RESOURCES\r | |
348 | EFI_TIMEOUT\r | |
349 | EFI_DEVICE_ERROR\r | |
350 | \r | |
351 | --*/\r | |
352 | {\r | |
353 | USB_IO_DEVICE *UsbIoDev;\r | |
562d2849 | 354 | UINTN MaxPacketLength;\r |
878ddf1f | 355 | UINT8 DataToggle;\r |
356 | UINT8 OldToggle;\r | |
357 | EFI_STATUS RetStatus;\r | |
878ddf1f | 358 | USB_IO_CONTROLLER_DEVICE *UsbIoController;\r |
359 | ENDPOINT_DESC_LIST_ENTRY *EndPointListEntry;\r | |
562d2849 | 360 | UINT8 DataBuffersNumber;\r |
71a62114 | 361 | UINT32 TransferResult;\r |
562d2849 | 362 | \r |
363 | DataBuffersNumber = 1;\r | |
364 | UsbIoController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (This);\r | |
365 | UsbIoDev = UsbIoController->UsbDevice;\r | |
878ddf1f | 366 | \r |
367 | //\r | |
368 | // Parameters Checking\r | |
369 | //\r | |
370 | if ((DeviceEndpoint & 0x7F) == 0) {\r | |
371 | return EFI_INVALID_PARAMETER;\r | |
372 | }\r | |
373 | \r | |
374 | if ((DeviceEndpoint & 0x7F) > 15) {\r | |
375 | return EFI_INVALID_PARAMETER;\r | |
376 | }\r | |
377 | \r | |
378 | if (Status == NULL) {\r | |
379 | return EFI_INVALID_PARAMETER;\r | |
380 | }\r | |
381 | \r | |
382 | EndPointListEntry = FindEndPointListEntry (\r | |
383 | This,\r | |
384 | DeviceEndpoint\r | |
385 | );\r | |
386 | \r | |
387 | if (EndPointListEntry == NULL) {\r | |
388 | return EFI_INVALID_PARAMETER;\r | |
389 | }\r | |
390 | \r | |
391 | if ((EndPointListEntry->EndpointDescriptor.Attributes & 0x03) != 0x02) {\r | |
392 | return EFI_INVALID_PARAMETER;\r | |
393 | }\r | |
394 | \r | |
395 | //\r | |
396 | // leave the HostController's BulkTransfer\r | |
397 | // to perform other parameters checking\r | |
398 | //\r | |
399 | GetDeviceEndPointMaxPacketLength (\r | |
400 | This,\r | |
401 | DeviceEndpoint,\r | |
402 | &MaxPacketLength\r | |
403 | );\r | |
404 | \r | |
405 | GetDataToggleBit (\r | |
406 | This,\r | |
407 | DeviceEndpoint,\r | |
408 | &DataToggle\r | |
409 | );\r | |
410 | \r | |
411 | OldToggle = DataToggle;\r | |
412 | \r | |
413 | //\r | |
414 | // using HostController's BulkTransfer to complete the request\r | |
415 | //\r | |
562d2849 | 416 | RetStatus = UsbVirtualHcBulkTransfer (\r |
417 | UsbIoDev->BusController,\r | |
418 | UsbIoDev->DeviceAddress,\r | |
419 | DeviceEndpoint,\r | |
420 | UsbIoDev->DeviceSpeed,\r | |
421 | MaxPacketLength,\r | |
422 | DataBuffersNumber,\r | |
423 | &Data,\r | |
424 | DataLength,\r | |
425 | &DataToggle,\r | |
426 | Timeout,\r | |
427 | UsbIoDev->Translator,\r | |
428 | &TransferResult\r | |
429 | );\r | |
878ddf1f | 430 | \r |
431 | if (OldToggle != DataToggle) {\r | |
432 | //\r | |
433 | // Write the toggle back\r | |
434 | //\r | |
435 | SetDataToggleBit (\r | |
436 | This,\r | |
437 | DeviceEndpoint,\r | |
438 | DataToggle\r | |
439 | );\r | |
440 | }\r | |
441 | \r | |
442 | *Status = TransferResult;\r | |
443 | \r | |
444 | return RetStatus;\r | |
445 | }\r | |
446 | \r | |
447 | STATIC\r | |
448 | EFI_STATUS\r | |
449 | EFIAPI\r | |
450 | UsbSyncInterruptTransfer (\r | |
451 | IN EFI_USB_IO_PROTOCOL *This,\r | |
452 | IN UINT8 DeviceEndpoint,\r | |
453 | IN OUT VOID *Data,\r | |
454 | IN OUT UINTN *DataLength,\r | |
455 | IN UINTN Timeout,\r | |
456 | OUT UINT32 *Status\r | |
457 | )\r | |
458 | /*++\r | |
459 | \r | |
460 | Routine Description:\r | |
461 | Usb Sync Interrupt Transfer\r | |
462 | \r | |
463 | Arguments:\r | |
464 | This - Indicates calling context.\r | |
465 | DeviceEndpoint - The destination USB device endpoint to which the device\r | |
466 | request is being sent.\r | |
467 | Data - A pointer to the buffer of data that will be transmitted\r | |
468 | to USB device or received from USB device.\r | |
469 | DataLength - On input, the size, in bytes, of the data buffer\r | |
470 | specified by Data. On output, the number of bytes that\r | |
471 | were actually transferred.\r | |
472 | Timeout - Indicates the transfer should be completed within this\r | |
473 | time frame.\r | |
474 | Status - This parameter indicates the USB transfer status.\r | |
475 | \r | |
476 | Returns:\r | |
477 | EFI_SUCCESS\r | |
478 | EFI_INVALID_PARAMETER\r | |
479 | EFI_OUT_OF_RESOURCES\r | |
480 | EFI_TIMEOUT\r | |
481 | EFI_DEVICE_ERROR\r | |
482 | \r | |
483 | --*/\r | |
484 | {\r | |
562d2849 | 485 | USB_IO_DEVICE *UsbIoDev;\r |
486 | UINTN MaxPacketLength;\r | |
487 | UINT8 DataToggle;\r | |
488 | UINT8 OldToggle;\r | |
489 | EFI_STATUS RetStatus;\r | |
490 | USB_IO_CONTROLLER_DEVICE *UsbIoController;\r | |
491 | ENDPOINT_DESC_LIST_ENTRY *EndPointListEntry;\r | |
878ddf1f | 492 | \r |
493 | //\r | |
494 | // Parameters Checking\r | |
495 | //\r | |
496 | if ((DeviceEndpoint & 0x7F) == 0) {\r | |
497 | return EFI_INVALID_PARAMETER;\r | |
498 | }\r | |
499 | \r | |
500 | if ((DeviceEndpoint & 0x7F) > 15) {\r | |
501 | return EFI_INVALID_PARAMETER;\r | |
502 | }\r | |
503 | \r | |
504 | if (Status == NULL) {\r | |
505 | return EFI_INVALID_PARAMETER;\r | |
506 | }\r | |
507 | \r | |
508 | EndPointListEntry = FindEndPointListEntry (\r | |
509 | This,\r | |
510 | DeviceEndpoint\r | |
511 | );\r | |
512 | \r | |
513 | if (EndPointListEntry == NULL) {\r | |
514 | return EFI_INVALID_PARAMETER;\r | |
515 | }\r | |
516 | \r | |
517 | if ((EndPointListEntry->EndpointDescriptor.Attributes & 0x03) != 0x03) {\r | |
518 | return EFI_INVALID_PARAMETER;\r | |
519 | }\r | |
520 | \r | |
521 | //\r | |
522 | // leave the HostController's SyncInterruptTransfer\r | |
523 | // to perform other parameters checking\r | |
524 | //\r | |
525 | UsbIoController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (This);\r | |
526 | UsbIoDev = UsbIoController->UsbDevice;\r | |
878ddf1f | 527 | GetDeviceEndPointMaxPacketLength (\r |
528 | This,\r | |
529 | DeviceEndpoint,\r | |
530 | &MaxPacketLength\r | |
531 | );\r | |
532 | \r | |
533 | GetDataToggleBit (\r | |
534 | This,\r | |
535 | DeviceEndpoint,\r | |
536 | &DataToggle\r | |
537 | );\r | |
538 | \r | |
539 | OldToggle = DataToggle;\r | |
540 | //\r | |
541 | // using HostController's SyncInterruptTransfer to complete the request\r | |
542 | //\r | |
562d2849 | 543 | RetStatus = UsbVirtualHcSyncInterruptTransfer (\r |
544 | UsbIoDev->BusController,\r | |
545 | UsbIoDev->DeviceAddress,\r | |
546 | DeviceEndpoint,\r | |
547 | UsbIoDev->DeviceSpeed,\r | |
548 | MaxPacketLength,\r | |
549 | Data,\r | |
550 | DataLength,\r | |
551 | &DataToggle,\r | |
552 | Timeout,\r | |
553 | UsbIoDev->Translator,\r | |
554 | Status\r | |
555 | );\r | |
878ddf1f | 556 | \r |
557 | if (OldToggle != DataToggle) {\r | |
558 | //\r | |
559 | // Write the toggle back\r | |
560 | //\r | |
561 | SetDataToggleBit (\r | |
562 | This,\r | |
563 | DeviceEndpoint,\r | |
564 | DataToggle\r | |
565 | );\r | |
566 | }\r | |
567 | \r | |
568 | return RetStatus;\r | |
569 | }\r | |
570 | \r | |
571 | STATIC\r | |
572 | EFI_STATUS\r | |
573 | EFIAPI\r | |
574 | UsbAsyncInterruptTransfer (\r | |
575 | IN EFI_USB_IO_PROTOCOL *This,\r | |
576 | IN UINT8 DeviceEndpoint,\r | |
577 | IN BOOLEAN IsNewTransfer,\r | |
578 | IN UINTN PollingInterval, OPTIONAL\r | |
579 | IN UINTN DataLength, OPTIONAL\r | |
580 | IN EFI_ASYNC_USB_TRANSFER_CALLBACK InterruptCallBack, OPTIONAL\r | |
581 | IN VOID *Context OPTIONAL\r | |
582 | )\r | |
583 | /*++\r | |
584 | \r | |
585 | Routine Description:\r | |
586 | Usb Async Interrput Transfer\r | |
587 | \r | |
588 | Arguments:\r | |
589 | This - Indicates calling context.\r | |
590 | DeviceEndpoint - The destination USB device endpoint to which the\r | |
591 | device request is being sent.\r | |
592 | IsNewTransfer - If TRUE, a new transfer will be submitted to USB\r | |
593 | controller. If FALSE, the interrupt transfer is\r | |
594 | deleted from the device's interrupt transfer queue.\r | |
595 | PollingInterval - Indicates the periodic rate, in milliseconds, that\r | |
596 | the transfer is to be executed.\r | |
597 | DataLength - Specifies the length, in bytes, of the data to be\r | |
598 | received from the USB device.\r | |
562d2849 | 599 | InterruptCallBack - The Callback function. This function is called if\r |
878ddf1f | 600 | the asynchronous interrupt transfer is completed.\r |
601 | Context - Passed to InterruptCallback \r | |
602 | Returns:\r | |
603 | EFI_SUCCESS\r | |
604 | EFI_INVALID_PARAMETER\r | |
605 | EFI_OUT_OF_RESOURCES\r | |
606 | \r | |
607 | --*/\r | |
608 | {\r | |
562d2849 | 609 | USB_IO_DEVICE *UsbIoDev;\r |
610 | UINTN MaxPacketLength;\r | |
611 | UINT8 DataToggle;\r | |
612 | EFI_STATUS RetStatus;\r | |
613 | USB_IO_CONTROLLER_DEVICE *UsbIoController;\r | |
614 | ENDPOINT_DESC_LIST_ENTRY *EndpointListEntry;\r | |
878ddf1f | 615 | \r |
616 | //\r | |
617 | // Check endpoint\r | |
618 | //\r | |
619 | if ((DeviceEndpoint & 0x7F) == 0) {\r | |
620 | return EFI_INVALID_PARAMETER;\r | |
621 | }\r | |
622 | \r | |
623 | if ((DeviceEndpoint & 0x7F) > 15) {\r | |
624 | return EFI_INVALID_PARAMETER;\r | |
625 | }\r | |
626 | \r | |
627 | EndpointListEntry = FindEndPointListEntry (\r | |
628 | This,\r | |
629 | DeviceEndpoint\r | |
630 | );\r | |
631 | \r | |
632 | if (EndpointListEntry == NULL) {\r | |
633 | return EFI_INVALID_PARAMETER;\r | |
634 | }\r | |
635 | \r | |
636 | if ((EndpointListEntry->EndpointDescriptor.Attributes & 0x03) != 0x03) {\r | |
637 | return EFI_INVALID_PARAMETER;\r | |
638 | }\r | |
639 | \r | |
640 | UsbIoController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (This);\r | |
641 | UsbIoDev = UsbIoController->UsbDevice;\r | |
878ddf1f | 642 | \r |
643 | if (!IsNewTransfer) {\r | |
644 | //\r | |
645 | // Delete this transfer\r | |
646 | //\r | |
562d2849 | 647 | UsbVirtualHcAsyncInterruptTransfer (\r |
648 | UsbIoDev->BusController,\r | |
649 | UsbIoDev->DeviceAddress,\r | |
650 | DeviceEndpoint,\r | |
651 | UsbIoDev->DeviceSpeed,\r | |
652 | 0,\r | |
653 | FALSE,\r | |
654 | &DataToggle,\r | |
655 | PollingInterval,\r | |
656 | DataLength,\r | |
657 | UsbIoDev->Translator,\r | |
658 | NULL,\r | |
659 | NULL\r | |
660 | );\r | |
878ddf1f | 661 | \r |
662 | //\r | |
663 | // We need to store the toggle value\r | |
664 | //\r | |
665 | SetDataToggleBit (\r | |
666 | This,\r | |
667 | DeviceEndpoint,\r | |
668 | DataToggle\r | |
669 | );\r | |
670 | \r | |
671 | return EFI_SUCCESS;\r | |
672 | }\r | |
673 | \r | |
674 | GetDeviceEndPointMaxPacketLength (\r | |
675 | This,\r | |
676 | DeviceEndpoint,\r | |
677 | &MaxPacketLength\r | |
678 | );\r | |
679 | \r | |
680 | GetDataToggleBit (\r | |
681 | This,\r | |
682 | DeviceEndpoint,\r | |
683 | &DataToggle\r | |
684 | );\r | |
685 | \r | |
562d2849 | 686 | RetStatus = UsbVirtualHcAsyncInterruptTransfer (\r |
687 | UsbIoDev->BusController,\r | |
688 | UsbIoDev->DeviceAddress,\r | |
689 | DeviceEndpoint,\r | |
690 | UsbIoDev->DeviceSpeed,\r | |
691 | MaxPacketLength,\r | |
692 | TRUE,\r | |
693 | &DataToggle,\r | |
694 | PollingInterval,\r | |
695 | DataLength,\r | |
696 | UsbIoDev->Translator,\r | |
697 | InterruptCallBack,\r | |
698 | Context\r | |
699 | );\r | |
878ddf1f | 700 | \r |
701 | return RetStatus;\r | |
702 | }\r | |
703 | \r | |
704 | STATIC\r | |
705 | EFI_STATUS\r | |
706 | EFIAPI\r | |
707 | UsbIsochronousTransfer (\r | |
708 | IN EFI_USB_IO_PROTOCOL *This,\r | |
709 | IN UINT8 DeviceEndpoint,\r | |
710 | IN OUT VOID *Data,\r | |
711 | IN UINTN DataLength,\r | |
712 | OUT UINT32 *Status\r | |
713 | )\r | |
714 | /*++\r | |
715 | \r | |
716 | Routine Description:\r | |
717 | Usb Isochronous Transfer\r | |
718 | \r | |
719 | Arguments:\r | |
720 | This - Indicates calling context.\r | |
721 | DeviceEndpoint - The destination USB device endpoint to which the\r | |
722 | device request is being sent.\r | |
723 | Data - A pointer to the buffer of data that will be\r | |
724 | transmitted to USB device or received from USB device.\r | |
725 | DataLength - The size, in bytes, of the data buffer specified by\r | |
726 | Data.\r | |
727 | Status - This parameter indicates the USB transfer status.\r | |
728 | \r | |
729 | Returns:\r | |
730 | EFI_SUCCESS\r | |
731 | EFI_INVALID_PARAMETER\r | |
732 | EFI_OUT_OF_RESOURCES\r | |
733 | EFI_TIMEOUT\r | |
734 | EFI_DEVICE_ERROR\r | |
735 | EFI_UNSUPPORTED\r | |
736 | --*/\r | |
737 | {\r | |
738 | //\r | |
739 | // Currently we don't support this transfer\r | |
740 | //\r | |
741 | return EFI_UNSUPPORTED;\r | |
742 | }\r | |
743 | \r | |
744 | STATIC\r | |
745 | EFI_STATUS\r | |
746 | EFIAPI\r | |
747 | UsbAsyncIsochronousTransfer (\r | |
748 | IN EFI_USB_IO_PROTOCOL *This,\r | |
749 | IN UINT8 DeviceEndpoint,\r | |
750 | IN OUT VOID *Data,\r | |
751 | IN UINTN DataLength,\r | |
752 | IN EFI_ASYNC_USB_TRANSFER_CALLBACK IsochronousCallBack,\r | |
753 | IN VOID *Context OPTIONAL\r | |
754 | )\r | |
755 | /*++\r | |
756 | \r | |
757 | Routine Description:\r | |
758 | \r | |
759 | Usb Async Isochronous Transfer\r | |
760 | \r | |
761 | Arguments:\r | |
762 | \r | |
763 | This - EFI_USB_IO_PROTOCOL\r | |
764 | DeviceEndpoint - DeviceEndpoint number\r | |
765 | Data - Data to transfer\r | |
766 | DataLength - DataLength\r | |
767 | IsochronousCallBack - Isochronous CallBack function\r | |
768 | Context - Passed to IsochronousCallBack function\r | |
769 | Returns:\r | |
770 | \r | |
771 | EFI_UNSUPPORTED - Unsupported now\r | |
772 | \r | |
773 | --*/\r | |
774 | {\r | |
775 | //\r | |
776 | // Currently we don't support this transfer\r | |
777 | //\r | |
778 | return EFI_UNSUPPORTED;\r | |
779 | }\r | |
780 | //\r | |
781 | // Here is new definitions\r | |
782 | //\r | |
783 | STATIC\r | |
784 | EFI_STATUS\r | |
785 | EFIAPI\r | |
786 | UsbGetDeviceDescriptor (\r | |
787 | IN EFI_USB_IO_PROTOCOL *This,\r | |
788 | OUT EFI_USB_DEVICE_DESCRIPTOR *DeviceDescriptor\r | |
789 | )\r | |
790 | /*++\r | |
791 | \r | |
792 | Routine Description:\r | |
793 | Retrieves the USB Device Descriptor.\r | |
794 | \r | |
795 | Arguments:\r | |
796 | This - Indicates the calling context.\r | |
797 | DeviceDescriptor - A pointer to the caller allocated USB Device\r | |
798 | Descriptor.\r | |
799 | \r | |
800 | Returns:\r | |
801 | EFI_SUCCESS\r | |
802 | EFI_INVALID_PARAMETER\r | |
803 | EFI_NOT_FOUND\r | |
804 | \r | |
805 | --*/\r | |
806 | {\r | |
807 | USB_IO_CONTROLLER_DEVICE *UsbIoController;\r | |
808 | USB_IO_DEVICE *UsbIoDev;\r | |
809 | \r | |
810 | //\r | |
811 | // This function just wrapps UsbGetDeviceDescriptor.\r | |
812 | //\r | |
813 | \r | |
814 | if (DeviceDescriptor == NULL) {\r | |
815 | return EFI_INVALID_PARAMETER;\r | |
816 | }\r | |
817 | \r | |
818 | UsbIoController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (This);\r | |
819 | UsbIoDev = UsbIoController->UsbDevice;\r | |
820 | \r | |
821 | if (!UsbIoDev->IsConfigured) {\r | |
822 | return EFI_NOT_FOUND;\r | |
823 | }\r | |
824 | \r | |
825 | CopyMem (\r | |
826 | DeviceDescriptor,\r | |
827 | &UsbIoDev->DeviceDescriptor,\r | |
828 | sizeof (EFI_USB_DEVICE_DESCRIPTOR)\r | |
829 | );\r | |
830 | \r | |
831 | return EFI_SUCCESS;\r | |
832 | }\r | |
833 | \r | |
834 | STATIC\r | |
835 | EFI_STATUS\r | |
836 | EFIAPI\r | |
837 | UsbGetActiveConfigDescriptor (\r | |
838 | IN EFI_USB_IO_PROTOCOL *This,\r | |
839 | OUT EFI_USB_CONFIG_DESCRIPTOR *ConfigurationDescriptor\r | |
840 | )\r | |
841 | /*++\r | |
842 | \r | |
843 | Routine Description:\r | |
844 | Retrieves the current USB configuration Descriptor.\r | |
845 | \r | |
846 | Arguments:\r | |
847 | This - Indicates the calling context.\r | |
848 | ConfigurationDescriptor - A pointer to the caller allocated USB active\r | |
849 | Configuration Descriptor.\r | |
850 | \r | |
851 | Returns:\r | |
852 | EFI_SUCCESS\r | |
853 | EFI_INVALID_PARAMETER\r | |
854 | EFI_NOT_FOUND\r | |
855 | \r | |
856 | --*/\r | |
857 | {\r | |
858 | USB_IO_DEVICE *UsbIoDev;\r | |
859 | USB_IO_CONTROLLER_DEVICE *UsbIoController;\r | |
860 | \r | |
861 | //\r | |
862 | // This function just wrapps UsbGetActiveConfigDescriptor.\r | |
863 | //\r | |
864 | if (ConfigurationDescriptor == NULL) {\r | |
865 | return EFI_INVALID_PARAMETER;\r | |
866 | }\r | |
867 | \r | |
868 | UsbIoController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (This);\r | |
869 | UsbIoDev = UsbIoController->UsbDevice;\r | |
870 | \r | |
871 | if (!UsbIoDev->IsConfigured) {\r | |
872 | return EFI_NOT_FOUND;\r | |
873 | }\r | |
874 | \r | |
875 | CopyMem (\r | |
876 | ConfigurationDescriptor,\r | |
877 | &(UsbIoDev->ActiveConfig->CongfigDescriptor),\r | |
878 | sizeof (EFI_USB_CONFIG_DESCRIPTOR)\r | |
879 | );\r | |
880 | \r | |
881 | return EFI_SUCCESS;\r | |
882 | }\r | |
883 | \r | |
884 | STATIC\r | |
885 | EFI_STATUS\r | |
886 | EFIAPI\r | |
887 | UsbGetInterfaceDescriptor (\r | |
888 | IN EFI_USB_IO_PROTOCOL *This,\r | |
889 | OUT EFI_USB_INTERFACE_DESCRIPTOR *InterfaceDescriptor\r | |
890 | )\r | |
891 | /*++\r | |
892 | \r | |
893 | Routine Description:\r | |
894 | Retrieves the interface Descriptor for that controller.\r | |
895 | \r | |
896 | Arguments:\r | |
897 | This - Indicates the calling context.\r | |
898 | InterfaceDescriptor - A pointer to the caller allocated USB interface\r | |
899 | Descriptor.\r | |
900 | \r | |
901 | Returns:\r | |
902 | EFI_SUCCESS\r | |
903 | EFI_INVALID_PARAMETER\r | |
904 | EFI_NOT_FOUND\r | |
905 | \r | |
906 | --*/\r | |
907 | {\r | |
908 | INTERFACE_DESC_LIST_ENTRY *InterfaceListEntry;\r | |
909 | \r | |
910 | if (InterfaceDescriptor == NULL) {\r | |
911 | return EFI_INVALID_PARAMETER;\r | |
912 | }\r | |
913 | \r | |
914 | InterfaceListEntry = FindInterfaceListEntry (This);\r | |
915 | \r | |
916 | if (InterfaceListEntry == NULL) {\r | |
917 | return EFI_NOT_FOUND;\r | |
918 | }\r | |
919 | \r | |
920 | CopyMem (\r | |
921 | InterfaceDescriptor,\r | |
922 | &(InterfaceListEntry->InterfaceDescriptor),\r | |
923 | sizeof (EFI_USB_INTERFACE_DESCRIPTOR)\r | |
924 | );\r | |
925 | \r | |
926 | return EFI_SUCCESS;\r | |
927 | }\r | |
928 | \r | |
929 | STATIC\r | |
930 | EFI_STATUS\r | |
931 | EFIAPI\r | |
932 | UsbGetEndpointDescriptor (\r | |
933 | IN EFI_USB_IO_PROTOCOL *This,\r | |
934 | IN UINT8 EndpointIndex,\r | |
935 | OUT EFI_USB_ENDPOINT_DESCRIPTOR *EndpointDescriptor\r | |
936 | )\r | |
937 | /*++\r | |
938 | \r | |
939 | Routine Description:\r | |
940 | Retrieves the endpoint Descriptor for a given endpoint.\r | |
941 | \r | |
942 | Arguments:\r | |
943 | This - Indicates the calling context.\r | |
944 | EndpointIndex - Indicates which endpoint descriptor to retrieve.\r | |
945 | The valid range is 0..15.\r | |
946 | EndpointDescriptor - A pointer to the caller allocated USB Endpoint\r | |
947 | Descriptor of a USB controller.\r | |
948 | \r | |
949 | Returns:\r | |
950 | EFI_SUCCESS - The endpoint descriptor was retrieved successfully.\r | |
951 | EFI_INVALID_PARAMETER - EndpointIndex is not valid.\r | |
952 | - EndpointDescriptor is NULL.\r | |
953 | EFI_NOT_FOUND - The endpoint descriptor cannot be found.\r | |
954 | The device may not be correctly configured.\r | |
955 | \r | |
956 | --*/\r | |
957 | {\r | |
958 | INTERFACE_DESC_LIST_ENTRY *InterfaceListEntry;\r | |
959 | LIST_ENTRY *EndpointListHead;\r | |
960 | ENDPOINT_DESC_LIST_ENTRY *EndpointListEntry;\r | |
961 | \r | |
962 | if (EndpointDescriptor == NULL) {\r | |
963 | return EFI_INVALID_PARAMETER;\r | |
964 | }\r | |
965 | \r | |
966 | if (EndpointIndex > 15) {\r | |
967 | return EFI_INVALID_PARAMETER;\r | |
968 | }\r | |
969 | \r | |
970 | InterfaceListEntry = FindInterfaceListEntry (This);\r | |
971 | \r | |
972 | if (InterfaceListEntry == NULL) {\r | |
973 | return EFI_NOT_FOUND;\r | |
974 | }\r | |
975 | \r | |
976 | EndpointListHead = (LIST_ENTRY *) (&InterfaceListEntry->EndpointDescListHead);\r | |
977 | EndpointListEntry = (ENDPOINT_DESC_LIST_ENTRY *) (EndpointListHead->ForwardLink);\r | |
978 | \r | |
979 | if (EndpointIndex >= InterfaceListEntry->InterfaceDescriptor.NumEndpoints) {\r | |
980 | return EFI_NOT_FOUND;\r | |
981 | }\r | |
982 | //\r | |
983 | // Loop all endpoint descriptor to get match one.\r | |
984 | //\r | |
985 | while (EndpointIndex != 0) {\r | |
986 | EndpointListEntry = (ENDPOINT_DESC_LIST_ENTRY *) (EndpointListEntry->Link.ForwardLink);\r | |
987 | EndpointIndex--;\r | |
988 | }\r | |
989 | \r | |
990 | CopyMem (\r | |
991 | EndpointDescriptor,\r | |
992 | &EndpointListEntry->EndpointDescriptor,\r | |
993 | sizeof (EFI_USB_ENDPOINT_DESCRIPTOR)\r | |
994 | );\r | |
995 | \r | |
996 | return EFI_SUCCESS;\r | |
997 | }\r | |
998 | \r | |
999 | STATIC\r | |
1000 | EFI_STATUS\r | |
1001 | EFIAPI\r | |
1002 | UsbGetSupportedLanguages (\r | |
1003 | IN EFI_USB_IO_PROTOCOL *This,\r | |
1004 | OUT UINT16 **LangIDTable,\r | |
1005 | OUT UINT16 *TableSize\r | |
1006 | )\r | |
1007 | /*++\r | |
1008 | \r | |
1009 | Routine Description:\r | |
1010 | Get all the languages that the USB device supports\r | |
1011 | \r | |
1012 | Arguments:\r | |
1013 | This - Indicates the calling context.\r | |
1014 | LangIDTable - Language ID for the string the caller wants to get.\r | |
1015 | TableSize - The size, in bytes, of the table LangIDTable.\r | |
1016 | \r | |
1017 | Returns:\r | |
1018 | EFI_SUCCESS\r | |
1019 | EFI_NOT_FOUND\r | |
1020 | \r | |
1021 | --*/\r | |
1022 | {\r | |
1023 | USB_IO_DEVICE *UsbIoDev;\r | |
1024 | USB_IO_CONTROLLER_DEVICE *UsbIoController;\r | |
1025 | UINTN Index;\r | |
1026 | BOOLEAN Found;\r | |
1027 | \r | |
1028 | UsbIoController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (This);\r | |
1029 | UsbIoDev = UsbIoController->UsbDevice;\r | |
1030 | \r | |
1031 | Found = FALSE;\r | |
1032 | Index = 0;\r | |
1033 | //\r | |
1034 | // Loop language table\r | |
1035 | //\r | |
1036 | while (UsbIoDev->LangID[Index]) {\r | |
1037 | Found = TRUE;\r | |
1038 | Index++;\r | |
1039 | }\r | |
1040 | \r | |
1041 | if (!Found) {\r | |
1042 | return EFI_NOT_FOUND;\r | |
1043 | }\r | |
1044 | \r | |
1045 | *LangIDTable = UsbIoDev->LangID;\r | |
1046 | *TableSize = (UINT16) Index;\r | |
1047 | \r | |
1048 | return EFI_SUCCESS;\r | |
1049 | }\r | |
1050 | \r | |
1051 | STATIC\r | |
1052 | EFI_STATUS\r | |
1053 | EFIAPI\r | |
1054 | UsbGetStringDescriptor (\r | |
1055 | IN EFI_USB_IO_PROTOCOL *This,\r | |
1056 | IN UINT16 LangID,\r | |
1057 | IN UINT8 StringIndex,\r | |
1058 | OUT CHAR16 **String\r | |
1059 | )\r | |
1060 | /*++\r | |
1061 | \r | |
1062 | Routine Description:\r | |
1063 | Get a given string descriptor\r | |
1064 | \r | |
1065 | Arguments:\r | |
1066 | This - Indicates the calling context.\r | |
1067 | LangID - The Language ID for the string being retrieved.\r | |
1068 | StringIndex - The ID of the string being retrieved.\r | |
1069 | String - A pointer to a buffer allocated by this function\r | |
1070 | with AllocatePool() to store the string. If this\r | |
1071 | function returns EFI_SUCCESS, it stores the string\r | |
1072 | the caller wants to get. The caller should release\r | |
1073 | the string buffer with FreePool() after the string\r | |
1074 | is not used any more.\r | |
1075 | Returns:\r | |
1076 | EFI_SUCCESS\r | |
1077 | EFI_NOT_FOUND\r | |
1078 | EFI_OUT_OF_RESOURCES\r | |
562d2849 | 1079 | EFI_UNSUPPORTED\r |
878ddf1f | 1080 | \r |
1081 | --*/\r | |
1082 | {\r | |
1083 | UINT32 Status;\r | |
1084 | EFI_STATUS Result;\r | |
1085 | EFI_USB_STRING_DESCRIPTOR *StrDescriptor;\r | |
1086 | UINT8 *Buffer;\r | |
1087 | CHAR16 *UsbString;\r | |
1088 | UINT16 TempBuffer;\r | |
1089 | USB_IO_DEVICE *UsbIoDev;\r | |
1090 | UINT8 Index;\r | |
1091 | BOOLEAN Found;\r | |
1092 | USB_IO_CONTROLLER_DEVICE *UsbIoController;\r | |
1093 | \r | |
1094 | if (StringIndex == 0) {\r | |
1095 | return EFI_NOT_FOUND;\r | |
1096 | }\r | |
1097 | //\r | |
1098 | // Search LanguageID, check if it is supported by this device\r | |
1099 | //\r | |
1100 | if (LangID == 0) {\r | |
1101 | return EFI_NOT_FOUND;\r | |
1102 | }\r | |
1103 | \r | |
1104 | UsbIoController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (This);\r | |
1105 | UsbIoDev = UsbIoController->UsbDevice;\r | |
1106 | \r | |
1107 | Found = FALSE;\r | |
1108 | Index = 0;\r | |
1109 | while (UsbIoDev->LangID[Index]) {\r | |
1110 | if (UsbIoDev->LangID[Index] == LangID) {\r | |
1111 | Found = TRUE;\r | |
1112 | break;\r | |
1113 | }\r | |
1114 | \r | |
1115 | Index++;\r | |
1116 | }\r | |
1117 | \r | |
1118 | if (!Found) {\r | |
1119 | return EFI_NOT_FOUND;\r | |
1120 | }\r | |
1121 | //\r | |
1122 | // Get String Length\r | |
1123 | //\r | |
1124 | Result = UsbGetString (\r | |
1125 | This,\r | |
1126 | LangID,\r | |
1127 | StringIndex,\r | |
1128 | &TempBuffer,\r | |
1129 | 2,\r | |
1130 | &Status\r | |
1131 | );\r | |
1132 | if (EFI_ERROR (Result)) {\r | |
1133 | return EFI_NOT_FOUND;\r | |
1134 | }\r | |
1135 | \r | |
1136 | StrDescriptor = (EFI_USB_STRING_DESCRIPTOR *) &TempBuffer;\r | |
1137 | \r | |
1138 | if (StrDescriptor->Length == 0) {\r | |
1139 | return EFI_UNSUPPORTED;\r | |
1140 | }\r | |
1141 | \r | |
1142 | Buffer = AllocateZeroPool (StrDescriptor->Length);\r | |
1143 | if (Buffer == NULL) {\r | |
1144 | return EFI_OUT_OF_RESOURCES;\r | |
1145 | }\r | |
1146 | \r | |
1147 | Result = UsbGetString (\r | |
1148 | This,\r | |
1149 | LangID,\r | |
1150 | StringIndex,\r | |
1151 | Buffer,\r | |
1152 | StrDescriptor->Length,\r | |
1153 | &Status\r | |
1154 | );\r | |
1155 | \r | |
1156 | if (EFI_ERROR (Result)) {\r | |
1157 | gBS->FreePool (Buffer);\r | |
1158 | return EFI_NOT_FOUND;\r | |
1159 | }\r | |
1160 | \r | |
1161 | StrDescriptor = (EFI_USB_STRING_DESCRIPTOR *) Buffer;\r | |
1162 | \r | |
1163 | //\r | |
1164 | // UsbString is a UNICODE string\r | |
1165 | //\r | |
1166 | UsbString = AllocateZeroPool (StrDescriptor->Length);\r | |
1167 | if (UsbString == NULL) {\r | |
1168 | gBS->FreePool (Buffer);\r | |
1169 | return EFI_OUT_OF_RESOURCES;\r | |
1170 | }\r | |
1171 | \r | |
1172 | CopyMem (\r | |
1173 | (VOID *) UsbString,\r | |
1174 | Buffer + 2,\r | |
1175 | StrDescriptor->Length - 2\r | |
1176 | );\r | |
1177 | \r | |
1178 | *String = UsbString;\r | |
1179 | \r | |
1180 | gBS->FreePool (Buffer);\r | |
1181 | \r | |
1182 | return EFI_SUCCESS;\r | |
1183 | }\r |