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e237e7ae | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2007, 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 | UsbMassBot.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Implementation of the USB mass storage Bulk-Only Transport protocol.\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | \r | |
23 | **/\r | |
24 | \r | |
25 | #include "UsbMass.h"\r | |
26 | #include "UsbMassBot.h"\r | |
27 | \r | |
28 | UINTN mUsbBotInfo = DEBUG_INFO;\r | |
29 | UINTN mUsbBotError = DEBUG_ERROR;\r | |
30 | \r | |
31 | STATIC\r | |
32 | EFI_STATUS\r | |
33 | UsbBotResetDevice (\r | |
34 | IN VOID *Context,\r | |
35 | IN BOOLEAN ExtendedVerification\r | |
36 | );\r | |
37 | \r | |
38 | \r | |
39 | /**\r | |
40 | Initialize the USB mass storage class BOT transport protocol.\r | |
41 | It will save its context which is a USB_BOT_PROTOCOL structure\r | |
42 | in the Context if Context isn't NULL.\r | |
43 | \r | |
44 | @param UsbIo The USB IO protocol to use\r | |
45 | @param Controller The controller to init\r | |
46 | @param Context The variable to save the context to\r | |
47 | \r | |
48 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory\r | |
49 | @retval EFI_UNSUPPORTED The transport protocol doesn't support the device.\r | |
50 | @retval EFI_SUCCESS The device is supported and protocol initialized.\r | |
51 | \r | |
52 | **/\r | |
53 | STATIC\r | |
54 | EFI_STATUS\r | |
55 | UsbBotInit (\r | |
56 | IN EFI_USB_IO_PROTOCOL * UsbIo,\r | |
57 | IN EFI_HANDLE Controller,\r | |
58 | OUT VOID **Context OPTIONAL\r | |
59 | )\r | |
60 | {\r | |
61 | USB_BOT_PROTOCOL *UsbBot;\r | |
62 | EFI_USB_INTERFACE_DESCRIPTOR *Interface;\r | |
63 | EFI_USB_ENDPOINT_DESCRIPTOR EndPoint;\r | |
64 | EFI_STATUS Status;\r | |
65 | UINT8 Index;\r | |
66 | \r | |
67 | //\r | |
68 | // Allocate the BOT context, append two endpoint descriptors to it\r | |
69 | //\r | |
70 | UsbBot = AllocateZeroPool (\r | |
71 | sizeof (USB_BOT_PROTOCOL) + 2 * sizeof (EFI_USB_ENDPOINT_DESCRIPTOR)\r | |
72 | );\r | |
73 | if (UsbBot == NULL) {\r | |
74 | return EFI_OUT_OF_RESOURCES;\r | |
75 | }\r | |
76 | \r | |
77 | UsbBot->UsbIo = UsbIo;\r | |
78 | \r | |
79 | //\r | |
80 | // Get the interface descriptor and validate that it\r | |
81 | // is a USB MSC BOT interface.\r | |
82 | //\r | |
83 | Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &UsbBot->Interface);\r | |
84 | \r | |
85 | if (EFI_ERROR (Status)) {\r | |
86 | DEBUG ((mUsbBotError, "UsbBotInit: Get invalid BOT interface (%r)\n", Status));\r | |
87 | goto ON_ERROR;\r | |
88 | }\r | |
89 | \r | |
90 | Interface = &UsbBot->Interface;\r | |
91 | \r | |
92 | if (Interface->InterfaceProtocol != USB_MASS_STORE_BOT) {\r | |
93 | Status = EFI_UNSUPPORTED;\r | |
94 | goto ON_ERROR;\r | |
95 | }\r | |
96 | \r | |
97 | //\r | |
98 | // Locate and save the first bulk-in and bulk-out endpoint\r | |
99 | //\r | |
100 | for (Index = 0; Index < Interface->NumEndpoints; Index++) {\r | |
101 | Status = UsbIo->UsbGetEndpointDescriptor (UsbIo, Index, &EndPoint);\r | |
102 | \r | |
103 | if (EFI_ERROR (Status) || !USB_IS_BULK_ENDPOINT (EndPoint.Attributes)) {\r | |
104 | continue;\r | |
105 | }\r | |
106 | \r | |
107 | if (USB_IS_IN_ENDPOINT (EndPoint.EndpointAddress) &&\r | |
108 | (UsbBot->BulkInEndpoint == NULL)) {\r | |
109 | \r | |
110 | UsbBot->BulkInEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbBot + 1);\r | |
84b5c78e | 111 | CopyMem(UsbBot->BulkInEndpoint, &EndPoint, sizeof (EndPoint));\r |
e237e7ae | 112 | }\r |
113 | \r | |
114 | if (USB_IS_OUT_ENDPOINT (EndPoint.EndpointAddress) &&\r | |
115 | (UsbBot->BulkOutEndpoint == NULL)) {\r | |
116 | \r | |
117 | UsbBot->BulkOutEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbBot + 1) + 1;\r | |
84b5c78e | 118 | CopyMem(UsbBot->BulkOutEndpoint, &EndPoint, sizeof(EndPoint));\r |
e237e7ae | 119 | }\r |
120 | }\r | |
121 | \r | |
122 | if ((UsbBot->BulkInEndpoint == NULL) || (UsbBot->BulkOutEndpoint == NULL)) {\r | |
123 | DEBUG ((mUsbBotError, "UsbBotInit: In/Out Endpoint invalid\n"));\r | |
124 | Status = EFI_UNSUPPORTED;\r | |
125 | goto ON_ERROR;\r | |
126 | }\r | |
127 | \r | |
128 | //\r | |
129 | // The USB BOT protocol uses dCBWTag to match the CBW and CSW.\r | |
130 | //\r | |
131 | UsbBot->CbwTag = 0x01;\r | |
132 | \r | |
133 | if (Context != NULL) {\r | |
134 | *Context = UsbBot;\r | |
135 | } else {\r | |
136 | gBS->FreePool (UsbBot);\r | |
137 | }\r | |
138 | \r | |
139 | return EFI_SUCCESS;\r | |
140 | \r | |
141 | ON_ERROR:\r | |
142 | gBS->FreePool (UsbBot);\r | |
143 | return Status;\r | |
144 | }\r | |
145 | \r | |
146 | \r | |
147 | /**\r | |
148 | Send the command to the device using Bulk-Out endpoint\r | |
149 | \r | |
150 | @param UsbBot The USB BOT device\r | |
151 | @param Cmd The command to transfer to device\r | |
152 | @param CmdLen the length of the command\r | |
153 | @param DataDir The direction of the data\r | |
154 | @param TransLen The expected length of the data\r | |
155 | \r | |
156 | @retval EFI_NOT_READY The device return NAK to the transfer\r | |
157 | @retval EFI_SUCCESS The command is sent to the device.\r | |
158 | @retval Others Failed to send the command to device\r | |
159 | \r | |
160 | **/\r | |
161 | STATIC\r | |
162 | EFI_STATUS\r | |
163 | UsbBotSendCommand (\r | |
164 | IN USB_BOT_PROTOCOL *UsbBot,\r | |
165 | IN UINT8 *Cmd,\r | |
166 | IN UINT8 CmdLen,\r | |
167 | IN EFI_USB_DATA_DIRECTION DataDir,\r | |
168 | IN UINT32 TransLen\r | |
169 | )\r | |
170 | {\r | |
171 | USB_BOT_CBW Cbw;\r | |
172 | EFI_STATUS Status;\r | |
173 | UINT32 Result;\r | |
174 | UINTN DataLen;\r | |
175 | UINTN Timeout;\r | |
176 | \r | |
177 | ASSERT ((CmdLen > 0) && (CmdLen <= USB_BOT_MAX_CMDLEN));\r | |
178 | \r | |
179 | //\r | |
180 | // Fill in the CSW. Only the first LUN is supported now.\r | |
181 | //\r | |
182 | Cbw.Signature = USB_BOT_CBW_SIGNATURE;\r | |
183 | Cbw.Tag = UsbBot->CbwTag;\r | |
184 | Cbw.DataLen = TransLen;\r | |
c52fa98c | 185 | Cbw.Flag = (UINT8) ((DataDir == EfiUsbDataIn) ? 0x80 : 0);\r |
e237e7ae | 186 | Cbw.Lun = 0;\r |
187 | Cbw.CmdLen = CmdLen;\r | |
188 | \r | |
189 | ZeroMem (Cbw.CmdBlock, USB_BOT_MAX_CMDLEN);\r | |
190 | CopyMem (Cbw.CmdBlock, Cmd, CmdLen);\r | |
191 | \r | |
192 | Result = 0;\r | |
193 | DataLen = sizeof (USB_BOT_CBW);\r | |
41e8ff27 | 194 | Timeout = USB_BOT_SEND_CBW_TIMEOUT / USB_MASS_1_MILLISECOND;\r |
e237e7ae | 195 | \r |
196 | //\r | |
197 | // Use the UsbIo to send the command to the device. The default\r | |
198 | // time out is enough.\r | |
199 | //\r | |
200 | Status = UsbBot->UsbIo->UsbBulkTransfer (\r | |
201 | UsbBot->UsbIo,\r | |
202 | UsbBot->BulkOutEndpoint->EndpointAddress,\r | |
203 | &Cbw,\r | |
204 | &DataLen,\r | |
205 | Timeout,\r | |
206 | &Result\r | |
207 | );\r | |
208 | //\r | |
209 | // Respond to Bulk-Out endpoint stall with a Reset Recovery,\r | |
210 | // see the spec section 5.3.1\r | |
211 | //\r | |
212 | if (EFI_ERROR (Status)) {\r | |
213 | if (USB_IS_ERROR (Result, EFI_USB_ERR_STALL) && DataDir == EfiUsbDataOut) {\r | |
214 | UsbBotResetDevice (UsbBot, FALSE);\r | |
215 | } else if (USB_IS_ERROR (Result, EFI_USB_ERR_NAK)) {\r | |
216 | Status = EFI_NOT_READY;\r | |
217 | }\r | |
218 | }\r | |
219 | \r | |
220 | return Status;\r | |
221 | }\r | |
222 | \r | |
223 | \r | |
224 | /**\r | |
225 | Transfer the data between the device and host. BOT transfer\r | |
226 | is composed of three phase, command, data, and status.\r | |
227 | \r | |
228 | @param UsbBot The USB BOT device\r | |
229 | @param DataDir The direction of the data\r | |
230 | @param Data The buffer to hold data\r | |
231 | @param TransLen The expected length of the data\r | |
232 | @param Timeout The time to wait the command to complete\r | |
233 | \r | |
234 | @retval EFI_SUCCESS The data is transferred\r | |
235 | @retval Others Failed to transfer data\r | |
236 | \r | |
237 | **/\r | |
238 | STATIC\r | |
239 | EFI_STATUS\r | |
240 | UsbBotDataTransfer (\r | |
241 | IN USB_BOT_PROTOCOL *UsbBot,\r | |
242 | IN EFI_USB_DATA_DIRECTION DataDir,\r | |
243 | IN OUT UINT8 *Data,\r | |
244 | IN OUT UINTN *TransLen,\r | |
245 | IN UINT32 Timeout\r | |
246 | )\r | |
247 | {\r | |
248 | EFI_USB_ENDPOINT_DESCRIPTOR *Endpoint;\r | |
249 | EFI_STATUS Status;\r | |
250 | UINT32 Result;\r | |
251 | \r | |
252 | //\r | |
253 | // It's OK if no data to transfer\r | |
254 | //\r | |
255 | if ((DataDir == EfiUsbNoData) || (*TransLen == 0)) {\r | |
256 | return EFI_SUCCESS;\r | |
257 | }\r | |
258 | \r | |
259 | //\r | |
260 | // Select the endpoint then issue the transfer\r | |
261 | //\r | |
262 | if (DataDir == EfiUsbDataIn) {\r | |
263 | Endpoint = UsbBot->BulkInEndpoint;\r | |
264 | } else {\r | |
265 | Endpoint = UsbBot->BulkOutEndpoint;\r | |
266 | }\r | |
267 | \r | |
268 | Result = 0;\r | |
41e8ff27 | 269 | Timeout = Timeout / USB_MASS_1_MILLISECOND;\r |
e237e7ae | 270 | \r |
271 | Status = UsbBot->UsbIo->UsbBulkTransfer (\r | |
272 | UsbBot->UsbIo,\r | |
273 | Endpoint->EndpointAddress,\r | |
274 | Data,\r | |
275 | TransLen,\r | |
276 | Timeout,\r | |
277 | &Result\r | |
278 | );\r | |
279 | if (EFI_ERROR (Status)) {\r | |
280 | DEBUG ((mUsbBotError, "UsbBotDataTransfer: (%r)\n", Status));\r | |
281 | if (USB_IS_ERROR (Result, EFI_USB_ERR_STALL)) {\r | |
282 | DEBUG ((mUsbBotError, "UsbBotDataTransfer: DataIn Stall\n"));\r | |
283 | UsbClearEndpointStall (UsbBot->UsbIo, Endpoint->EndpointAddress);\r | |
284 | } else if (USB_IS_ERROR (Result, EFI_USB_ERR_NAK)) {\r | |
285 | Status = EFI_NOT_READY;\r | |
286 | }\r | |
287 | }\r | |
288 | \r | |
289 | return Status;\r | |
290 | }\r | |
291 | \r | |
292 | \r | |
293 | /**\r | |
294 | Get the command execution status from device. BOT transfer is\r | |
295 | composed of three phase, command, data, and status.\r | |
296 | This function return the transfer status of the BOT's CSW status,\r | |
297 | and return the high level command execution result in Result. So\r | |
298 | even it returns EFI_SUCCESS, the command may still have failed.\r | |
299 | \r | |
300 | @param UsbBot The USB BOT device\r | |
301 | @param TransLen The expected length of the data\r | |
302 | @param Timeout The time to wait the command to complete\r | |
303 | @param CmdStatus The result of the command execution.\r | |
304 | \r | |
305 | @retval EFI_DEVICE_ERROR Failed to retrieve the command execute result\r | |
306 | @retval EFI_SUCCESS Command execute result is retrieved and in the\r | |
307 | Result.\r | |
308 | \r | |
309 | **/\r | |
310 | STATIC\r | |
311 | EFI_STATUS\r | |
312 | UsbBotGetStatus (\r | |
313 | IN USB_BOT_PROTOCOL *UsbBot,\r | |
314 | IN UINT32 TransLen,\r | |
315 | OUT UINT8 *CmdStatus\r | |
316 | )\r | |
317 | {\r | |
318 | USB_BOT_CSW Csw;\r | |
319 | UINTN Len;\r | |
320 | UINT8 Endpoint;\r | |
321 | EFI_STATUS Status;\r | |
322 | UINT32 Result;\r | |
323 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
324 | UINT32 Index;\r | |
325 | UINTN Timeout;\r | |
41e8ff27 | 326 | \r |
e237e7ae | 327 | *CmdStatus = USB_BOT_COMMAND_ERROR;\r |
328 | Status = EFI_DEVICE_ERROR;\r | |
329 | Endpoint = UsbBot->BulkInEndpoint->EndpointAddress;\r | |
330 | UsbIo = UsbBot->UsbIo;\r | |
41e8ff27 | 331 | Timeout = USB_BOT_RECV_CSW_TIMEOUT / USB_MASS_1_MILLISECOND;\r |
e237e7ae | 332 | \r |
41e8ff27 | 333 | for (Index = 0; Index < USB_BOT_RECV_CSW_RETRY; Index++) {\r |
e237e7ae | 334 | //\r |
335 | // Attemp to the read CSW from bulk in endpoint\r | |
336 | //\r | |
337 | ZeroMem (&Csw, sizeof (USB_BOT_CSW));\r | |
338 | Result = 0;\r | |
339 | Len = sizeof (USB_BOT_CSW);\r | |
340 | Status = UsbIo->UsbBulkTransfer (\r | |
341 | UsbIo,\r | |
342 | Endpoint,\r | |
343 | &Csw,\r | |
344 | &Len,\r | |
345 | Timeout,\r | |
346 | &Result\r | |
347 | );\r | |
348 | if (EFI_ERROR(Status)) {\r | |
349 | DEBUG ((mUsbBotError, "UsbBotGetStatus (%r)\n", Status));\r | |
350 | if (USB_IS_ERROR (Result, EFI_USB_ERR_STALL)) {\r | |
351 | DEBUG ((mUsbBotError, "UsbBotGetStatus: DataIn Stall\n"));\r | |
352 | UsbClearEndpointStall (UsbIo, Endpoint);\r | |
353 | }\r | |
354 | continue;\r | |
355 | }\r | |
356 | \r | |
357 | if (Csw.Signature != USB_BOT_CSW_SIGNATURE) {\r | |
358 | //\r | |
359 | // Invalid Csw need perform reset recovery\r | |
360 | //\r | |
361 | DEBUG ((mUsbBotError, "UsbBotGetStatus: Device return a invalid signature\n"));\r | |
362 | Status = UsbBotResetDevice (UsbBot, FALSE);\r | |
363 | } else if (Csw.CmdStatus == USB_BOT_COMMAND_ERROR) {\r | |
364 | //\r | |
365 | // Respond phase error need perform reset recovery\r | |
366 | //\r | |
367 | DEBUG ((mUsbBotError, "UsbBotGetStatus: Device return a phase error\n"));\r | |
368 | Status = UsbBotResetDevice (UsbBot, FALSE);\r | |
369 | } else {\r | |
370 | \r | |
371 | *CmdStatus = Csw.CmdStatus;\r | |
372 | break;\r | |
373 | }\r | |
374 | }\r | |
375 | //\r | |
376 | //The tag is increased even there is an error.\r | |
377 | //\r | |
378 | UsbBot->CbwTag++;\r | |
379 | \r | |
380 | return Status;\r | |
381 | }\r | |
382 | \r | |
383 | \r | |
384 | /**\r | |
385 | Call the Usb mass storage class transport protocol to issue\r | |
386 | the command/data/status circle to execute the commands\r | |
387 | \r | |
388 | @param Context The context of the BOT protocol, that is,\r | |
389 | USB_BOT_PROTOCOL\r | |
390 | @param Cmd The high level command\r | |
391 | @param CmdLen The command length\r | |
392 | @param DataDir The direction of the data transfer\r | |
393 | @param Data The buffer to hold data\r | |
394 | @param DataLen The length of the data\r | |
395 | @param Timeout The time to wait command\r | |
396 | @param CmdStatus The result of high level command execution\r | |
397 | \r | |
398 | @retval EFI_DEVICE_ERROR Failed to excute command\r | |
399 | @retval EFI_SUCCESS The command is executed OK, and result in CmdStatus\r | |
400 | \r | |
401 | **/\r | |
402 | STATIC\r | |
403 | EFI_STATUS\r | |
404 | UsbBotExecCommand (\r | |
405 | IN VOID *Context,\r | |
406 | IN VOID *Cmd,\r | |
407 | IN UINT8 CmdLen,\r | |
408 | IN EFI_USB_DATA_DIRECTION DataDir,\r | |
409 | IN VOID *Data,\r | |
410 | IN UINT32 DataLen,\r | |
411 | IN UINT32 Timeout,\r | |
412 | OUT UINT32 *CmdStatus\r | |
413 | )\r | |
414 | {\r | |
415 | USB_BOT_PROTOCOL *UsbBot;\r | |
416 | EFI_STATUS Status;\r | |
417 | UINTN TransLen;\r | |
418 | UINT8 Result;\r | |
419 | \r | |
420 | *CmdStatus = USB_MASS_CMD_FAIL;\r | |
421 | UsbBot = (USB_BOT_PROTOCOL *) Context;\r | |
422 | \r | |
423 | //\r | |
424 | // Send the command to the device. Return immediately if device\r | |
425 | // rejects the command.\r | |
426 | //\r | |
427 | Status = UsbBotSendCommand (UsbBot, Cmd, CmdLen, DataDir, DataLen);\r | |
428 | if (EFI_ERROR (Status)) {\r | |
429 | DEBUG ((mUsbBotError, "UsbBotExecCommand: UsbBotSendCommand (%r)\n", Status));\r | |
430 | return Status;\r | |
431 | }\r | |
432 | \r | |
433 | //\r | |
434 | // Transfer the data. Don't return immediately even data transfer\r | |
435 | // failed. The host should attempt to receive the CSW no matter\r | |
436 | // whether it succeeds or failed.\r | |
437 | //\r | |
438 | TransLen = (UINTN) DataLen;\r | |
439 | UsbBotDataTransfer (UsbBot, DataDir, Data, &TransLen, Timeout);\r | |
440 | \r | |
441 | //\r | |
442 | // Get the status, if that succeeds, interpret the result\r | |
443 | //\r | |
444 | Status = UsbBotGetStatus (UsbBot, DataLen, &Result);\r | |
445 | if (EFI_ERROR (Status)) {\r | |
446 | DEBUG ((mUsbBotError, "UsbBotExecCommand: UsbBotGetStatus (%r)\n", Status));\r | |
447 | return Status;\r | |
448 | }\r | |
449 | \r | |
450 | if (Result == 0) {\r | |
451 | *CmdStatus = USB_MASS_CMD_SUCCESS;\r | |
452 | }\r | |
453 | \r | |
454 | return EFI_SUCCESS;\r | |
455 | }\r | |
456 | \r | |
457 | \r | |
458 | /**\r | |
459 | Reset the mass storage device by BOT protocol\r | |
460 | \r | |
461 | @param Context The context of the BOT protocol, that is,\r | |
462 | USB_BOT_PROTOCOL\r | |
463 | \r | |
464 | @retval EFI_SUCCESS The device is reset\r | |
465 | @retval Others Failed to reset the device.\r | |
466 | \r | |
467 | **/\r | |
468 | STATIC\r | |
469 | EFI_STATUS\r | |
470 | UsbBotResetDevice (\r | |
471 | IN VOID *Context,\r | |
472 | IN BOOLEAN ExtendedVerification\r | |
473 | )\r | |
474 | {\r | |
475 | USB_BOT_PROTOCOL *UsbBot;\r | |
476 | EFI_USB_DEVICE_REQUEST Request;\r | |
477 | EFI_STATUS Status;\r | |
478 | UINT32 Result;\r | |
479 | UINT32 Timeout;\r | |
480 | \r | |
481 | UsbBot = (USB_BOT_PROTOCOL *) Context;\r | |
482 | \r | |
483 | if (ExtendedVerification) {\r | |
484 | //\r | |
485 | // If we need to do strictly reset, reset its parent hub port\r | |
486 | //\r | |
487 | Status = UsbBot->UsbIo->UsbPortReset (UsbBot->UsbIo);\r | |
488 | if (EFI_ERROR (Status)) {\r | |
489 | return Status;\r | |
490 | }\r | |
491 | }\r | |
492 | \r | |
493 | //\r | |
494 | // Issue a class specific "Bulk-Only Mass Storage Reset reqest.\r | |
495 | // See the spec section 3.1\r | |
496 | //\r | |
497 | Request.RequestType = 0x21;\r | |
498 | Request.Request = USB_BOT_RESET_REQUEST;\r | |
499 | Request.Value = 0;\r | |
500 | Request.Index = UsbBot->Interface.InterfaceNumber;\r | |
501 | Request.Length = 0;\r | |
41e8ff27 | 502 | Timeout = USB_BOT_RESET_DEVICE_TIMEOUT / USB_MASS_1_MILLISECOND;\r |
e237e7ae | 503 | \r |
504 | Status = UsbBot->UsbIo->UsbControlTransfer (\r | |
505 | UsbBot->UsbIo,\r | |
506 | &Request,\r | |
507 | EfiUsbNoData,\r | |
508 | Timeout,\r | |
509 | NULL,\r | |
510 | 0,\r | |
511 | &Result\r | |
512 | );\r | |
513 | \r | |
514 | if (EFI_ERROR (Status)) {\r | |
515 | DEBUG ((mUsbBotError, "UsbBotResetDevice: (%r)\n", Status));\r | |
516 | return Status;\r | |
517 | }\r | |
518 | \r | |
519 | //\r | |
520 | // The device shall NAK the host's request until the reset is\r | |
521 | // complete. We can use this to sync the device and host. For\r | |
522 | // now just stall 100ms to wait the device.\r | |
523 | //\r | |
41e8ff27 | 524 | gBS->Stall (USB_BOT_RESET_DEVICE_STALL);\r |
e237e7ae | 525 | \r |
526 | //\r | |
527 | // Clear the Bulk-In and Bulk-Out stall condition.\r | |
528 | //\r | |
529 | UsbClearEndpointStall (UsbBot->UsbIo, UsbBot->BulkInEndpoint->EndpointAddress);\r | |
530 | UsbClearEndpointStall (UsbBot->UsbIo, UsbBot->BulkOutEndpoint->EndpointAddress);\r | |
531 | return Status;\r | |
532 | }\r | |
533 | \r | |
534 | \r | |
535 | /**\r | |
536 | Clean up the resource used by this BOT protocol\r | |
537 | \r | |
538 | @param Context The context of the BOT protocol, that is,\r | |
539 | USB_BOT_PROTOCOL\r | |
540 | \r | |
541 | @retval EFI_SUCCESS The resource is cleaned up.\r | |
542 | \r | |
543 | **/\r | |
544 | STATIC\r | |
545 | EFI_STATUS\r | |
546 | UsbBotFini (\r | |
547 | IN VOID *Context\r | |
548 | )\r | |
549 | {\r | |
550 | gBS->FreePool (Context);\r | |
551 | return EFI_SUCCESS;\r | |
552 | }\r | |
553 | \r | |
554 | USB_MASS_TRANSPORT\r | |
555 | mUsbBotTransport = {\r | |
556 | USB_MASS_STORE_BOT,\r | |
557 | UsbBotInit,\r | |
558 | UsbBotExecCommand,\r | |
559 | UsbBotResetDevice,\r | |
560 | UsbBotFini\r | |
561 | };\r |