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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 | UsbMassCbi.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Implementation of the USB mass storage Control/Bulk/Interrupt transpor.\r | |
19 | Notice: it is being obseleted by the standard body in favor of the BOT\r | |
20 | (Bulk-Only Transport).\r | |
21 | \r | |
22 | Revision History\r | |
23 | \r | |
24 | \r | |
25 | **/\r | |
26 | \r | |
27 | #include "UsbMass.h"\r | |
28 | #include "UsbMassCbi.h"\r | |
29 | \r | |
30 | UINTN mUsbCbiInfo = DEBUG_INFO;\r | |
31 | UINTN mUsbCbiError = DEBUG_ERROR;\r | |
32 | \r | |
33 | STATIC\r | |
34 | EFI_STATUS\r | |
35 | UsbCbiResetDevice (\r | |
36 | IN VOID *Context,\r | |
37 | IN BOOLEAN ExtendedVerification\r | |
38 | );\r | |
39 | \r | |
40 | \r | |
41 | /**\r | |
42 | Initialize the USB mass storage class CBI transport protocol.\r | |
43 | If Context isn't NULL, it will save its context in it.\r | |
44 | \r | |
45 | @param UsbIo The USB IO to use\r | |
46 | @param Controller The device controller\r | |
47 | @param Context The variable to save context in\r | |
48 | \r | |
49 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory\r | |
50 | @retval EFI_UNSUPPORTED The device isn't supported\r | |
51 | @retval EFI_SUCCESS The CBI protocol is initialized.\r | |
52 | \r | |
53 | **/\r | |
54 | STATIC\r | |
55 | EFI_STATUS\r | |
56 | UsbCbiInit (\r | |
57 | IN EFI_USB_IO_PROTOCOL *UsbIo,\r | |
58 | IN EFI_HANDLE Controller,\r | |
59 | OUT VOID **Context OPTIONAL\r | |
60 | )\r | |
61 | {\r | |
62 | USB_CBI_PROTOCOL *UsbCbi;\r | |
63 | EFI_USB_INTERFACE_DESCRIPTOR *Interface;\r | |
64 | EFI_USB_ENDPOINT_DESCRIPTOR EndPoint;\r | |
65 | EFI_STATUS Status;\r | |
66 | UINT8 Index;\r | |
67 | \r | |
68 | //\r | |
69 | // Allocate the CBI context\r | |
70 | //\r | |
71 | UsbCbi = AllocateZeroPool (\r | |
72 | sizeof (USB_CBI_PROTOCOL) + 3 * sizeof (EFI_USB_ENDPOINT_DESCRIPTOR)\r | |
73 | );\r | |
74 | \r | |
75 | if (UsbCbi == NULL) {\r | |
76 | return EFI_OUT_OF_RESOURCES;\r | |
77 | }\r | |
78 | \r | |
79 | UsbCbi->UsbIo = UsbIo;\r | |
80 | \r | |
81 | //\r | |
82 | // Get the interface descriptor and validate that it is a USB mass\r | |
83 | // storage class CBI interface.\r | |
84 | //\r | |
85 | Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &UsbCbi->Interface);\r | |
86 | if (EFI_ERROR (Status)) {\r | |
87 | goto ON_ERROR;\r | |
88 | }\r | |
89 | \r | |
90 | Interface = &UsbCbi->Interface;\r | |
91 | if ((Interface->InterfaceProtocol != USB_MASS_STORE_CBI0)\r | |
92 | && (Interface->InterfaceProtocol != USB_MASS_STORE_CBI1)) {\r | |
93 | Status = EFI_UNSUPPORTED;\r | |
94 | goto ON_ERROR;\r | |
95 | }\r | |
96 | \r | |
97 | //\r | |
98 | // Locate and save the bulk-in, bulk-out, and interrupt endpoint\r | |
99 | //\r | |
100 | for (Index = 0; Index < Interface->NumEndpoints; Index++) {\r | |
101 | Status = UsbIo->UsbGetEndpointDescriptor (UsbIo, Index, &EndPoint);\r | |
102 | if (EFI_ERROR (Status)) {\r | |
103 | continue;\r | |
104 | }\r | |
105 | \r | |
106 | if (USB_IS_BULK_ENDPOINT (EndPoint.Attributes)) {\r | |
107 | //\r | |
108 | // Use the first Bulk-In and Bulk-Out endpoints\r | |
109 | //\r | |
110 | if (USB_IS_IN_ENDPOINT (EndPoint.EndpointAddress) &&\r | |
111 | (UsbCbi->BulkInEndpoint == NULL)) {\r | |
112 | \r | |
113 | UsbCbi->BulkInEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbCbi + 1);\r | |
84b5c78e | 114 | CopyMem(UsbCbi->BulkInEndpoint, &EndPoint, sizeof (EndPoint));;\r |
e237e7ae | 115 | }\r |
116 | \r | |
117 | if (USB_IS_OUT_ENDPOINT (EndPoint.EndpointAddress) &&\r | |
118 | (UsbCbi->BulkOutEndpoint == NULL)) {\r | |
119 | \r | |
120 | UsbCbi->BulkOutEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbCbi + 1) + 1;\r | |
84b5c78e | 121 | CopyMem(UsbCbi->BulkOutEndpoint, &EndPoint, sizeof (EndPoint));\r |
e237e7ae | 122 | }\r |
123 | \r | |
124 | } else if (USB_IS_INTERRUPT_ENDPOINT (EndPoint.Attributes)) {\r | |
125 | //\r | |
126 | // Use the first interrupt endpoint if it is CBI0\r | |
127 | //\r | |
128 | if ((Interface->InterfaceProtocol == USB_MASS_STORE_CBI0) &&\r | |
129 | (UsbCbi->InterruptEndpoint == NULL)) {\r | |
130 | \r | |
131 | UsbCbi->InterruptEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbCbi + 1) + 2;\r | |
84b5c78e | 132 | CopyMem(UsbCbi->InterruptEndpoint, &EndPoint, sizeof (EndPoint));\r |
e237e7ae | 133 | }\r |
134 | }\r | |
135 | }\r | |
136 | \r | |
137 | if ((UsbCbi->BulkInEndpoint == NULL)\r | |
138 | || (UsbCbi->BulkOutEndpoint == NULL)\r | |
139 | || ((Interface->InterfaceProtocol == USB_MASS_STORE_CBI0)\r | |
140 | && (UsbCbi->InterruptEndpoint == NULL))) {\r | |
141 | Status = EFI_UNSUPPORTED;\r | |
142 | goto ON_ERROR;\r | |
143 | }\r | |
144 | \r | |
145 | if (Context != NULL) {\r | |
146 | *Context = UsbCbi;\r | |
147 | } else {\r | |
148 | gBS->FreePool (UsbCbi);\r | |
149 | }\r | |
150 | return EFI_SUCCESS;\r | |
151 | \r | |
152 | ON_ERROR:\r | |
153 | gBS->FreePool (UsbCbi);\r | |
154 | return Status;\r | |
155 | }\r | |
156 | \r | |
157 | \r | |
158 | \r | |
159 | /**\r | |
160 | Send the command to the device using class specific control transfer.\r | |
161 | \r | |
162 | @param UsbCbi The USB CBI protocol\r | |
163 | @param Cmd The high level command to transfer to device\r | |
164 | @param CmdLen The length of the command\r | |
165 | @param Timeout The time to wait the command to finish\r | |
166 | \r | |
167 | @retval EFI_SUCCESS The command is transferred to device\r | |
168 | @retval Others The command failed to transfer to device\r | |
169 | \r | |
170 | **/\r | |
171 | STATIC\r | |
172 | EFI_STATUS\r | |
173 | UsbCbiSendCommand (\r | |
174 | IN USB_CBI_PROTOCOL *UsbCbi,\r | |
175 | IN UINT8 *Cmd,\r | |
176 | IN UINT8 CmdLen,\r | |
177 | IN UINT32 Timeout\r | |
178 | )\r | |
179 | {\r | |
180 | EFI_USB_DEVICE_REQUEST Request;\r | |
181 | EFI_STATUS Status;\r | |
182 | UINT32 TransStatus;\r | |
183 | UINTN DataLen;\r | |
184 | INTN Retry;\r | |
185 | \r | |
186 | //\r | |
187 | // Fill in the device request, CBI use the "Accept Device-Specific\r | |
188 | // Cmd" (ADSC) class specific request to send commands\r | |
189 | //\r | |
190 | Request.RequestType = 0x21;\r | |
191 | Request.Request = 0;\r | |
192 | Request.Value = 0;\r | |
193 | Request.Index = UsbCbi->Interface.InterfaceNumber;\r | |
194 | Request.Length = CmdLen;\r | |
195 | \r | |
196 | Status = EFI_SUCCESS;\r | |
197 | Timeout = Timeout / USB_MASS_STALL_1_MS;\r | |
198 | \r | |
199 | for (Retry = 0; Retry < USB_CBI_MAX_RETRY; Retry++) {\r | |
200 | //\r | |
201 | // Use the UsbIo to send the command to the device\r | |
202 | //\r | |
203 | TransStatus = 0;\r | |
204 | DataLen = CmdLen;\r | |
205 | \r | |
206 | Status = UsbCbi->UsbIo->UsbControlTransfer (\r | |
207 | UsbCbi->UsbIo,\r | |
208 | &Request,\r | |
209 | EfiUsbDataOut,\r | |
210 | Timeout,\r | |
211 | Cmd,\r | |
212 | DataLen,\r | |
213 | &TransStatus\r | |
214 | );\r | |
215 | //\r | |
216 | // The device can fail the command by STALL the control endpoint.\r | |
217 | // It can delay the command by NAK the data or status stage, this\r | |
218 | // is a "class-specific exemption to the USB specification". Retry\r | |
219 | // if the command is NAKed.\r | |
220 | //\r | |
221 | if (EFI_ERROR (Status) && (TransStatus == EFI_USB_ERR_NAK)) {\r | |
222 | continue;\r | |
223 | }\r | |
224 | \r | |
225 | break;\r | |
226 | }\r | |
227 | \r | |
228 | return Status;\r | |
229 | }\r | |
230 | \r | |
231 | \r | |
232 | /**\r | |
233 | Transfer data between the device and host. The CBI contains three phase,\r | |
234 | command, data, and status. This is data phase.\r | |
235 | \r | |
236 | @param UsbCbi The USB CBI device\r | |
237 | @param DataDir The direction of the data transfer\r | |
238 | @param Data The buffer to hold the data\r | |
239 | @param TransLen The expected transfer length\r | |
240 | @param Timeout The time to wait the command to execute\r | |
241 | \r | |
242 | @retval EFI_SUCCESS The data transfer succeeded\r | |
243 | @retval Others Failed to transfer all the data\r | |
244 | \r | |
245 | **/\r | |
246 | STATIC\r | |
247 | EFI_STATUS\r | |
248 | UsbCbiDataTransfer (\r | |
249 | IN USB_CBI_PROTOCOL *UsbCbi,\r | |
250 | IN EFI_USB_DATA_DIRECTION DataDir,\r | |
251 | IN OUT UINT8 *Data,\r | |
252 | IN OUT UINTN *TransLen,\r | |
253 | IN UINT32 Timeout\r | |
254 | )\r | |
255 | {\r | |
256 | EFI_USB_ENDPOINT_DESCRIPTOR *Endpoint;\r | |
257 | EFI_STATUS Status;\r | |
258 | UINT32 TransStatus;\r | |
259 | UINTN Remain;\r | |
260 | UINTN Increment;\r | |
261 | UINT8 *Next;\r | |
262 | UINTN Retry;\r | |
263 | \r | |
264 | //\r | |
265 | // It's OK if no data to transfer\r | |
266 | //\r | |
267 | if ((DataDir == EfiUsbNoData) || (*TransLen == 0)) {\r | |
268 | return EFI_SUCCESS;\r | |
269 | }\r | |
270 | \r | |
271 | //\r | |
272 | // Select the endpoint then issue the transfer\r | |
273 | //\r | |
274 | if (DataDir == EfiUsbDataIn) {\r | |
275 | Endpoint = UsbCbi->BulkInEndpoint;\r | |
276 | } else {\r | |
277 | Endpoint = UsbCbi->BulkOutEndpoint;\r | |
278 | }\r | |
279 | \r | |
280 | Next = Data;\r | |
281 | Remain = *TransLen;\r | |
282 | Retry = 0;\r | |
283 | Status = EFI_SUCCESS;\r | |
284 | Timeout = Timeout / USB_MASS_STALL_1_MS;\r | |
285 | \r | |
286 | //\r | |
287 | // Transfer the data, if the device returns NAK, retry it.\r | |
288 | //\r | |
289 | while (Remain > 0) {\r | |
290 | TransStatus = 0;\r | |
291 | \r | |
292 | if (Remain > (UINTN) USB_CBI_MAX_PACKET_NUM * Endpoint->MaxPacketSize) {\r | |
293 | Increment = USB_CBI_MAX_PACKET_NUM * Endpoint->MaxPacketSize;\r | |
294 | } else {\r | |
295 | Increment = Remain;\r | |
296 | }\r | |
297 | \r | |
298 | Status = UsbCbi->UsbIo->UsbBulkTransfer (\r | |
299 | UsbCbi->UsbIo,\r | |
300 | Endpoint->EndpointAddress,\r | |
301 | Next,\r | |
302 | &Increment,\r | |
303 | Timeout,\r | |
304 | &TransStatus\r | |
305 | );\r | |
306 | if (EFI_ERROR (Status)) {\r | |
307 | if (TransStatus == EFI_USB_ERR_NAK) {\r | |
308 | //\r | |
309 | // The device can NAK the host if either the data/buffer isn't\r | |
310 | // aviable or the command is in-progress. The data can be partly\r | |
311 | // transferred. The transfer is aborted if several succssive data\r | |
312 | // transfer commands are NAKed.\r | |
313 | //\r | |
314 | if (Increment == 0) {\r | |
315 | if (++Retry > USB_CBI_MAX_RETRY) {\r | |
316 | goto ON_EXIT;\r | |
317 | }\r | |
318 | \r | |
319 | } else {\r | |
320 | Next += Increment;\r | |
321 | Remain -= Increment;\r | |
322 | Retry = 0;\r | |
323 | }\r | |
324 | \r | |
325 | continue;\r | |
326 | }\r | |
327 | \r | |
328 | //\r | |
329 | // The device can fail the command by STALL the bulk endpoint.\r | |
330 | // Clear the stall if that is the case.\r | |
331 | //\r | |
332 | if (TransStatus == EFI_USB_ERR_STALL) {\r | |
333 | UsbClearEndpointStall (UsbCbi->UsbIo, Endpoint->EndpointAddress);\r | |
334 | }\r | |
335 | \r | |
336 | goto ON_EXIT;\r | |
337 | }\r | |
338 | \r | |
339 | Next += Increment;\r | |
340 | Remain -= Increment;\r | |
341 | }\r | |
342 | \r | |
343 | ON_EXIT:\r | |
344 | *TransLen -= Remain;\r | |
345 | return Status;\r | |
346 | }\r | |
347 | \r | |
348 | \r | |
349 | /**\r | |
350 | Get the result of high level command execution from interrupt\r | |
351 | endpoint. This function returns the USB transfer status, and\r | |
352 | put the high level command execution result in Result.\r | |
353 | \r | |
354 | @param UsbCbi The USB CBI protocol\r | |
355 | @param Timeout The time to wait the command to execute\r | |
356 | @param Result GC_TODO: add argument description\r | |
357 | \r | |
358 | @retval EFI_SUCCESS The high level command execution result is\r | |
359 | retrieved in Result.\r | |
360 | @retval Others Failed to retrieve the result.\r | |
361 | \r | |
362 | **/\r | |
363 | STATIC\r | |
364 | EFI_STATUS\r | |
365 | UsbCbiGetStatus (\r | |
366 | IN USB_CBI_PROTOCOL *UsbCbi,\r | |
367 | IN UINT32 Timeout,\r | |
368 | OUT USB_CBI_STATUS *Result\r | |
369 | )\r | |
370 | {\r | |
371 | UINTN Len;\r | |
372 | UINT8 Endpoint;\r | |
373 | EFI_STATUS Status;\r | |
374 | UINT32 TransStatus;\r | |
375 | INTN Retry;\r | |
376 | \r | |
377 | Endpoint = UsbCbi->InterruptEndpoint->EndpointAddress;\r | |
378 | Status = EFI_SUCCESS;\r | |
379 | Timeout = Timeout / USB_MASS_STALL_1_MS;\r | |
380 | \r | |
381 | //\r | |
382 | // Attemp to the read the result from interrupt endpoint\r | |
383 | //\r | |
384 | for (Retry = 0; Retry < USB_CBI_MAX_RETRY; Retry++) {\r | |
385 | TransStatus = 0;\r | |
386 | Len = sizeof (USB_CBI_STATUS);\r | |
387 | \r | |
388 | Status = UsbCbi->UsbIo->UsbSyncInterruptTransfer (\r | |
389 | UsbCbi->UsbIo,\r | |
390 | Endpoint,\r | |
391 | Result,\r | |
392 | &Len,\r | |
393 | Timeout,\r | |
394 | &TransStatus\r | |
395 | );\r | |
396 | //\r | |
397 | // The CBI can NAK the interrupt endpoint if the command is in-progress.\r | |
398 | //\r | |
399 | if (EFI_ERROR (Status) && (TransStatus == EFI_USB_ERR_NAK)) {\r | |
400 | continue;\r | |
401 | }\r | |
402 | \r | |
403 | break;\r | |
404 | }\r | |
405 | \r | |
406 | return Status;\r | |
407 | }\r | |
408 | \r | |
409 | \r | |
410 | /**\r | |
411 | Execute USB mass storage command through the CBI0/CBI1 transport protocol\r | |
412 | \r | |
413 | @param Context The USB CBI device\r | |
414 | @param Cmd The command to transfer to device\r | |
415 | @param CmdLen The length of the command\r | |
416 | @param DataDir The direction of data transfer\r | |
417 | @param Data The buffer to hold the data\r | |
418 | @param DataLen The length of the buffer\r | |
419 | @param Timeout The time to wait\r | |
420 | @param CmdStatus The result of the command execution\r | |
421 | \r | |
422 | @retval EFI_SUCCESS The command is executed OK and result in CmdStatus.\r | |
423 | @retval EFI_DEVICE_ERROR Failed to execute the command\r | |
424 | \r | |
425 | **/\r | |
426 | STATIC\r | |
427 | EFI_STATUS\r | |
428 | UsbCbiExecCommand (\r | |
429 | IN VOID *Context,\r | |
430 | IN VOID *Cmd,\r | |
431 | IN UINT8 CmdLen,\r | |
432 | IN EFI_USB_DATA_DIRECTION DataDir,\r | |
433 | IN VOID *Data,\r | |
434 | IN UINT32 DataLen,\r | |
435 | IN UINT32 Timeout,\r | |
436 | OUT UINT32 *CmdStatus\r | |
437 | )\r | |
438 | {\r | |
439 | USB_CBI_PROTOCOL *UsbCbi;\r | |
440 | USB_CBI_STATUS Result;\r | |
441 | EFI_STATUS Status;\r | |
442 | UINTN TransLen;\r | |
443 | \r | |
444 | *CmdStatus = USB_MASS_CMD_SUCCESS;\r | |
445 | UsbCbi = (USB_CBI_PROTOCOL *) Context;\r | |
446 | \r | |
447 | //\r | |
448 | // Send the command to the device. Return immediately if device\r | |
449 | // rejects the command.\r | |
450 | //\r | |
451 | Status = UsbCbiSendCommand (UsbCbi, Cmd, CmdLen, Timeout);\r | |
452 | if (EFI_ERROR (Status)) {\r | |
453 | DEBUG ((mUsbCbiError, "UsbCbiExecCommand: UsbCbiSendCommand (%r)\n",Status));\r | |
454 | return Status;\r | |
455 | }\r | |
456 | \r | |
457 | //\r | |
458 | // Transfer the data, return this status if no interrupt endpoint\r | |
459 | // is used to report the transfer status.\r | |
460 | //\r | |
461 | TransLen = (UINTN) DataLen;\r | |
462 | \r | |
463 | Status = UsbCbiDataTransfer (UsbCbi, DataDir, Data, &TransLen, Timeout);\r | |
464 | if (UsbCbi->InterruptEndpoint == NULL) {\r | |
465 | DEBUG ((mUsbCbiError, "UsbCbiExecCommand: UsbCbiDataTransfer (%r)\n",Status));\r | |
466 | return Status;\r | |
467 | }\r | |
468 | \r | |
469 | //\r | |
470 | // Get the status, if that succeeds, interpret the result\r | |
471 | //\r | |
472 | Status = UsbCbiGetStatus (UsbCbi, Timeout, &Result);\r | |
473 | if (EFI_ERROR (Status)) {\r | |
474 | DEBUG ((mUsbCbiError, "UsbCbiExecCommand: UsbCbiGetStatus (%r)\n",Status));\r | |
475 | return EFI_DEVICE_ERROR;\r | |
476 | }\r | |
477 | \r | |
478 | if (UsbCbi->Interface.InterfaceSubClass == USB_MASS_STORE_UFI) {\r | |
479 | //\r | |
480 | // For UFI device, ASC and ASCQ are returned.\r | |
481 | //\r | |
482 | if (Result.Type != 0) {\r | |
483 | *CmdStatus = USB_MASS_CMD_FAIL;\r | |
484 | }\r | |
485 | \r | |
486 | } else {\r | |
487 | //\r | |
488 | // Check page 27, CBI spec 1.1 for vaious reture status.\r | |
489 | //\r | |
490 | switch (Result.Value & 0x03) {\r | |
491 | case 0x00:\r | |
492 | //\r | |
493 | // Pass\r | |
494 | //\r | |
495 | *CmdStatus = USB_MASS_CMD_SUCCESS;\r | |
496 | break;\r | |
497 | \r | |
498 | case 0x02:\r | |
499 | //\r | |
500 | // Phase Error, response with reset. Fall through to Fail.\r | |
501 | //\r | |
502 | UsbCbiResetDevice (UsbCbi, FALSE);\r | |
503 | \r | |
504 | case 0x01:\r | |
505 | //\r | |
506 | // Fail\r | |
507 | //\r | |
508 | *CmdStatus = USB_MASS_CMD_FAIL;\r | |
509 | break;\r | |
510 | \r | |
511 | case 0x03:\r | |
512 | //\r | |
513 | // Persistent Fail, need to send REQUEST SENSE.\r | |
514 | //\r | |
515 | *CmdStatus = USB_MASS_CMD_PERSISTENT;\r | |
516 | break;\r | |
517 | }\r | |
518 | }\r | |
519 | \r | |
520 | return EFI_SUCCESS;\r | |
521 | }\r | |
522 | \r | |
523 | \r | |
524 | /**\r | |
525 | Call the Usb mass storage class transport protocol to\r | |
526 | reset the device. The reset is defined as a Non-Data\r | |
527 | command. Don't use UsbCbiExecCommand to send the command\r | |
528 | to device because that may introduce recursive loop.\r | |
529 | \r | |
530 | @param Context The USB CBI device protocol\r | |
531 | \r | |
532 | @retval EFI_SUCCESS the device is reset\r | |
533 | @retval Others Failed to reset the device\r | |
534 | \r | |
535 | **/\r | |
536 | STATIC\r | |
537 | EFI_STATUS\r | |
538 | UsbCbiResetDevice (\r | |
539 | IN VOID *Context,\r | |
540 | IN BOOLEAN ExtendedVerification\r | |
541 | )\r | |
542 | {\r | |
543 | UINT8 ResetCmd[USB_CBI_RESET_CMD_LEN];\r | |
544 | USB_CBI_PROTOCOL *UsbCbi;\r | |
545 | USB_CBI_STATUS Result;\r | |
546 | EFI_STATUS Status;\r | |
547 | UINT32 Timeout;\r | |
548 | \r | |
549 | UsbCbi = (USB_CBI_PROTOCOL *) Context;\r | |
550 | \r | |
551 | //\r | |
552 | // Fill in the reset command.\r | |
553 | //\r | |
554 | SetMem (ResetCmd, USB_CBI_RESET_CMD_LEN, 0xFF);\r | |
555 | \r | |
556 | ResetCmd[0] = 0x1D;\r | |
557 | ResetCmd[1] = 0x04;\r | |
558 | Timeout = USB_CBI_RESET_TIMEOUT / USB_MASS_STALL_1_MS;\r | |
559 | \r | |
560 | //\r | |
561 | // Send the command to the device. Don't use UsbCbiExecCommand here.\r | |
562 | //\r | |
563 | Status = UsbCbiSendCommand (UsbCbi, ResetCmd, USB_CBI_RESET_CMD_LEN, Timeout);\r | |
564 | if (EFI_ERROR (Status)) {\r | |
565 | return Status;\r | |
566 | }\r | |
567 | \r | |
568 | //\r | |
569 | // Just retrieve the status and ignore that. Then stall\r | |
570 | // 50ms to wait it complete\r | |
571 | //\r | |
572 | UsbCbiGetStatus (UsbCbi, Timeout, &Result);\r | |
573 | gBS->Stall (50 * 1000);\r | |
574 | \r | |
575 | //\r | |
576 | // Clear the Bulk-In and Bulk-Out stall condition and\r | |
577 | // init data toggle.\r | |
578 | //\r | |
579 | UsbClearEndpointStall (UsbCbi->UsbIo, UsbCbi->BulkInEndpoint->EndpointAddress);\r | |
580 | UsbClearEndpointStall (UsbCbi->UsbIo, UsbCbi->BulkOutEndpoint->EndpointAddress);\r | |
581 | return Status;\r | |
582 | }\r | |
583 | \r | |
584 | \r | |
585 | /**\r | |
586 | Clean up the CBI protocol's resource\r | |
587 | \r | |
588 | @param Context The CBI protocol\r | |
589 | \r | |
590 | @retval EFI_SUCCESS The resource is cleaned up.\r | |
591 | \r | |
592 | **/\r | |
593 | STATIC\r | |
594 | EFI_STATUS\r | |
595 | UsbCbiFini (\r | |
596 | IN VOID *Context\r | |
597 | )\r | |
598 | {\r | |
599 | gBS->FreePool (Context);\r | |
600 | return EFI_SUCCESS;\r | |
601 | }\r | |
602 | \r | |
603 | USB_MASS_TRANSPORT\r | |
604 | mUsbCbi0Transport = {\r | |
605 | USB_MASS_STORE_CBI0,\r | |
606 | UsbCbiInit,\r | |
607 | UsbCbiExecCommand,\r | |
608 | UsbCbiResetDevice,\r | |
609 | UsbCbiFini\r | |
610 | };\r | |
611 | \r | |
612 | USB_MASS_TRANSPORT\r | |
613 | mUsbCbi1Transport = {\r | |
614 | USB_MASS_STORE_CBI1,\r | |
615 | UsbCbiInit,\r | |
616 | UsbCbiExecCommand,\r | |
617 | UsbCbiResetDevice,\r | |
618 | UsbCbiFini\r | |
619 | };\r |