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1 | /** @file\r | |
2 | \r | |
3 | Unified interface for RootHub and Hub.\r | |
4 | \r | |
5 | Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
7 | \r | |
8 | **/\r | |
9 | \r | |
10 | #include "UsbBus.h"\r | |
11 | \r | |
12 | //\r | |
13 | // Array that maps the change bit to feature value which is\r | |
14 | // used to clear these change bit. USB HUB API will clear\r | |
15 | // these change bit automatically. For non-root hub, these\r | |
16 | // bits determine whether hub will report the port in changed\r | |
17 | // bit maps.\r | |
18 | //\r | |
19 | USB_CHANGE_FEATURE_MAP mHubFeatureMap[] = {\r | |
20 | { USB_PORT_STAT_C_CONNECTION, EfiUsbPortConnectChange },\r | |
21 | { USB_PORT_STAT_C_ENABLE, EfiUsbPortEnableChange },\r | |
22 | { USB_PORT_STAT_C_SUSPEND, EfiUsbPortSuspendChange },\r | |
23 | { USB_PORT_STAT_C_OVERCURRENT, EfiUsbPortOverCurrentChange },\r | |
24 | { USB_PORT_STAT_C_RESET, EfiUsbPortResetChange }\r | |
25 | };\r | |
26 | \r | |
27 | USB_CHANGE_FEATURE_MAP mRootHubFeatureMap[] = {\r | |
28 | { USB_PORT_STAT_C_CONNECTION, EfiUsbPortConnectChange },\r | |
29 | { USB_PORT_STAT_C_ENABLE, EfiUsbPortEnableChange },\r | |
30 | { USB_PORT_STAT_C_SUSPEND, EfiUsbPortSuspendChange },\r | |
31 | { USB_PORT_STAT_C_OVERCURRENT, EfiUsbPortOverCurrentChange },\r | |
32 | { USB_PORT_STAT_C_RESET, EfiUsbPortResetChange },\r | |
33 | };\r | |
34 | \r | |
35 | //\r | |
36 | // USB hub class specific requests. Although USB hub\r | |
37 | // is related to an interface, these requests are sent\r | |
38 | // to the control endpoint of the device.\r | |
39 | //\r | |
40 | \r | |
41 | /**\r | |
42 | USB hub control transfer to set the hub depth.\r | |
43 | \r | |
44 | @param HubDev The device of the hub.\r | |
45 | @param Depth The depth to set.\r | |
46 | \r | |
47 | @retval EFI_SUCCESS Depth of the hub is set.\r | |
48 | @retval Others Failed to set the depth.\r | |
49 | \r | |
50 | **/\r | |
51 | EFI_STATUS\r | |
52 | UsbHubCtrlSetHubDepth (\r | |
53 | IN USB_DEVICE *HubDev,\r | |
54 | IN UINT16 Depth\r | |
55 | )\r | |
56 | {\r | |
57 | EFI_STATUS Status;\r | |
58 | \r | |
59 | Status = UsbCtrlRequest (\r | |
60 | HubDev,\r | |
61 | EfiUsbNoData,\r | |
62 | USB_REQ_TYPE_CLASS,\r | |
63 | USB_HUB_TARGET_HUB,\r | |
64 | USB_HUB_REQ_SET_DEPTH,\r | |
65 | Depth,\r | |
66 | 0,\r | |
67 | NULL,\r | |
68 | 0\r | |
69 | );\r | |
70 | \r | |
71 | return Status;\r | |
72 | }\r | |
73 | \r | |
74 | /**\r | |
75 | USB hub control transfer to clear the hub feature.\r | |
76 | \r | |
77 | @param HubDev The device of the hub.\r | |
78 | @param Feature The feature to clear.\r | |
79 | \r | |
80 | @retval EFI_SUCCESS Feature of the hub is cleared.\r | |
81 | @retval Others Failed to clear the feature.\r | |
82 | \r | |
83 | **/\r | |
84 | EFI_STATUS\r | |
85 | UsbHubCtrlClearHubFeature (\r | |
86 | IN USB_DEVICE *HubDev,\r | |
87 | IN UINT16 Feature\r | |
88 | )\r | |
89 | {\r | |
90 | EFI_STATUS Status;\r | |
91 | \r | |
92 | Status = UsbCtrlRequest (\r | |
93 | HubDev,\r | |
94 | EfiUsbNoData,\r | |
95 | USB_REQ_TYPE_CLASS,\r | |
96 | USB_HUB_TARGET_HUB,\r | |
97 | USB_HUB_REQ_CLEAR_FEATURE,\r | |
98 | Feature,\r | |
99 | 0,\r | |
100 | NULL,\r | |
101 | 0\r | |
102 | );\r | |
103 | \r | |
104 | return Status;\r | |
105 | }\r | |
106 | \r | |
107 | /**\r | |
108 | Clear the feature of the device's port.\r | |
109 | \r | |
110 | @param HubDev The hub device.\r | |
111 | @param Port The port to clear feature.\r | |
112 | @param Feature The feature to clear.\r | |
113 | \r | |
114 | @retval EFI_SUCCESS The feature of the port is cleared.\r | |
115 | @retval Others Failed to clear the feature.\r | |
116 | \r | |
117 | **/\r | |
118 | EFI_STATUS\r | |
119 | UsbHubCtrlClearPortFeature (\r | |
120 | IN USB_DEVICE *HubDev,\r | |
121 | IN UINT8 Port,\r | |
122 | IN UINT16 Feature\r | |
123 | )\r | |
124 | {\r | |
125 | EFI_STATUS Status;\r | |
126 | \r | |
127 | //\r | |
128 | // In USB bus, all the port index starts from 0. But HUB\r | |
129 | // indexes its port from 1. So, port number is added one.\r | |
130 | //\r | |
131 | Status = UsbCtrlRequest (\r | |
132 | HubDev,\r | |
133 | EfiUsbNoData,\r | |
134 | USB_REQ_TYPE_CLASS,\r | |
135 | USB_HUB_TARGET_PORT,\r | |
136 | USB_HUB_REQ_CLEAR_FEATURE,\r | |
137 | Feature,\r | |
138 | (UINT16)(Port + 1),\r | |
139 | NULL,\r | |
140 | 0\r | |
141 | );\r | |
142 | \r | |
143 | return Status;\r | |
144 | }\r | |
145 | \r | |
146 | /**\r | |
147 | Clear the transaction translate buffer if full/low\r | |
148 | speed control/bulk transfer failed and the transfer\r | |
149 | uses this hub as translator.Remember to clear the TT\r | |
150 | buffer of transaction translator, not that of the\r | |
151 | parent.\r | |
152 | \r | |
153 | @param HubDev The hub device.\r | |
154 | @param Port The port of the hub.\r | |
155 | @param DevAddr Address of the failed transaction.\r | |
156 | @param EpNum The endpoint number of the failed transaction.\r | |
157 | @param EpType The type of failed transaction.\r | |
158 | \r | |
159 | @retval EFI_SUCCESS The TT buffer is cleared.\r | |
160 | @retval Others Failed to clear the TT buffer.\r | |
161 | \r | |
162 | **/\r | |
163 | EFI_STATUS\r | |
164 | UsbHubCtrlClearTTBuffer (\r | |
165 | IN USB_DEVICE *HubDev,\r | |
166 | IN UINT8 Port,\r | |
167 | IN UINT16 DevAddr,\r | |
168 | IN UINT16 EpNum,\r | |
169 | IN UINT16 EpType\r | |
170 | )\r | |
171 | {\r | |
172 | EFI_STATUS Status;\r | |
173 | UINT16 Value;\r | |
174 | \r | |
175 | //\r | |
176 | // Check USB2.0 spec page 424 for wValue's encoding\r | |
177 | //\r | |
178 | Value = (UINT16)((EpNum & 0x0F) | (DevAddr << 4) |\r | |
179 | ((EpType & 0x03) << 11) | ((EpNum & 0x80) << 15));\r | |
180 | \r | |
181 | Status = UsbCtrlRequest (\r | |
182 | HubDev,\r | |
183 | EfiUsbNoData,\r | |
184 | USB_REQ_TYPE_CLASS,\r | |
185 | USB_HUB_TARGET_PORT,\r | |
186 | USB_HUB_REQ_CLEAR_TT,\r | |
187 | Value,\r | |
188 | (UINT16)(Port + 1),\r | |
189 | NULL,\r | |
190 | 0\r | |
191 | );\r | |
192 | \r | |
193 | return Status;\r | |
194 | }\r | |
195 | \r | |
196 | /**\r | |
197 | Usb hub control transfer to get the (super speed) hub descriptor.\r | |
198 | \r | |
199 | @param HubDev The hub device.\r | |
200 | @param Buf The buffer to hold the descriptor.\r | |
201 | @param Len The length to retrieve.\r | |
202 | \r | |
203 | @retval EFI_SUCCESS The hub descriptor is retrieved.\r | |
204 | @retval Others Failed to retrieve the hub descriptor.\r | |
205 | \r | |
206 | **/\r | |
207 | EFI_STATUS\r | |
208 | UsbHubCtrlGetHubDesc (\r | |
209 | IN USB_DEVICE *HubDev,\r | |
210 | OUT VOID *Buf,\r | |
211 | IN UINTN Len\r | |
212 | )\r | |
213 | {\r | |
214 | EFI_STATUS Status;\r | |
215 | UINT8 DescType;\r | |
216 | \r | |
217 | DescType = (HubDev->Speed == EFI_USB_SPEED_SUPER) ?\r | |
218 | USB_DESC_TYPE_HUB_SUPER_SPEED :\r | |
219 | USB_DESC_TYPE_HUB;\r | |
220 | \r | |
221 | Status = UsbCtrlRequest (\r | |
222 | HubDev,\r | |
223 | EfiUsbDataIn,\r | |
224 | USB_REQ_TYPE_CLASS,\r | |
225 | USB_HUB_TARGET_HUB,\r | |
226 | USB_HUB_REQ_GET_DESC,\r | |
227 | (UINT16)(DescType << 8),\r | |
228 | 0,\r | |
229 | Buf,\r | |
230 | Len\r | |
231 | );\r | |
232 | \r | |
233 | return Status;\r | |
234 | }\r | |
235 | \r | |
236 | /**\r | |
237 | Usb hub control transfer to get the hub status.\r | |
238 | \r | |
239 | @param HubDev The hub device.\r | |
240 | @param State The variable to return the status.\r | |
241 | \r | |
242 | @retval EFI_SUCCESS The hub status is returned in State.\r | |
243 | @retval Others Failed to get the hub status.\r | |
244 | \r | |
245 | **/\r | |
246 | EFI_STATUS\r | |
247 | UsbHubCtrlGetHubStatus (\r | |
248 | IN USB_DEVICE *HubDev,\r | |
249 | OUT UINT32 *State\r | |
250 | )\r | |
251 | {\r | |
252 | EFI_STATUS Status;\r | |
253 | \r | |
254 | Status = UsbCtrlRequest (\r | |
255 | HubDev,\r | |
256 | EfiUsbDataIn,\r | |
257 | USB_REQ_TYPE_CLASS,\r | |
258 | USB_HUB_TARGET_HUB,\r | |
259 | USB_HUB_REQ_GET_STATUS,\r | |
260 | 0,\r | |
261 | 0,\r | |
262 | State,\r | |
263 | 4\r | |
264 | );\r | |
265 | \r | |
266 | return Status;\r | |
267 | }\r | |
268 | \r | |
269 | /**\r | |
270 | Usb hub control transfer to get the port status.\r | |
271 | \r | |
272 | @param HubDev The hub device.\r | |
273 | @param Port The port of the hub.\r | |
274 | @param State Variable to return the hub port state.\r | |
275 | \r | |
276 | @retval EFI_SUCCESS The port state is returned in State.\r | |
277 | @retval Others Failed to retrieve the port state.\r | |
278 | \r | |
279 | **/\r | |
280 | EFI_STATUS\r | |
281 | UsbHubCtrlGetPortStatus (\r | |
282 | IN USB_DEVICE *HubDev,\r | |
283 | IN UINT8 Port,\r | |
284 | OUT VOID *State\r | |
285 | )\r | |
286 | {\r | |
287 | EFI_STATUS Status;\r | |
288 | \r | |
289 | //\r | |
290 | // In USB bus, all the port index starts from 0. But HUB\r | |
291 | // indexes its port from 1. So, port number is added one.\r | |
292 | // No need to convert the hub bit to UEFI definition, they\r | |
293 | // are the same\r | |
294 | //\r | |
295 | Status = UsbCtrlRequest (\r | |
296 | HubDev,\r | |
297 | EfiUsbDataIn,\r | |
298 | USB_REQ_TYPE_CLASS,\r | |
299 | USB_HUB_TARGET_PORT,\r | |
300 | USB_HUB_REQ_GET_STATUS,\r | |
301 | 0,\r | |
302 | (UINT16)(Port + 1),\r | |
303 | State,\r | |
304 | 4\r | |
305 | );\r | |
306 | \r | |
307 | return Status;\r | |
308 | }\r | |
309 | \r | |
310 | /**\r | |
311 | Usb hub control transfer to set the port feature.\r | |
312 | \r | |
313 | @param HubDev The Usb hub device.\r | |
314 | @param Port The Usb port to set feature for.\r | |
315 | @param Feature The feature to set.\r | |
316 | \r | |
317 | @retval EFI_SUCCESS The feature is set for the port.\r | |
318 | @retval Others Failed to set the feature.\r | |
319 | \r | |
320 | **/\r | |
321 | EFI_STATUS\r | |
322 | UsbHubCtrlSetPortFeature (\r | |
323 | IN USB_DEVICE *HubDev,\r | |
324 | IN UINT8 Port,\r | |
325 | IN UINT8 Feature\r | |
326 | )\r | |
327 | {\r | |
328 | EFI_STATUS Status;\r | |
329 | \r | |
330 | //\r | |
331 | // In USB bus, all the port index starts from 0. But HUB\r | |
332 | // indexes its port from 1. So, port number is added one.\r | |
333 | //\r | |
334 | Status = UsbCtrlRequest (\r | |
335 | HubDev,\r | |
336 | EfiUsbNoData,\r | |
337 | USB_REQ_TYPE_CLASS,\r | |
338 | USB_HUB_TARGET_PORT,\r | |
339 | USB_HUB_REQ_SET_FEATURE,\r | |
340 | Feature,\r | |
341 | (UINT16)(Port + 1),\r | |
342 | NULL,\r | |
343 | 0\r | |
344 | );\r | |
345 | \r | |
346 | return Status;\r | |
347 | }\r | |
348 | \r | |
349 | /**\r | |
350 | Read the whole usb hub descriptor. It is necessary\r | |
351 | to do it in two steps because hub descriptor is of\r | |
352 | variable length.\r | |
353 | \r | |
354 | @param HubDev The hub device.\r | |
355 | @param HubDesc The variable to return the descriptor.\r | |
356 | \r | |
357 | @retval EFI_SUCCESS The hub descriptor is read.\r | |
358 | @retval Others Failed to read the hub descriptor.\r | |
359 | \r | |
360 | **/\r | |
361 | EFI_STATUS\r | |
362 | UsbHubReadDesc (\r | |
363 | IN USB_DEVICE *HubDev,\r | |
364 | OUT EFI_USB_HUB_DESCRIPTOR *HubDesc\r | |
365 | )\r | |
366 | {\r | |
367 | EFI_STATUS Status;\r | |
368 | \r | |
369 | //\r | |
370 | // First get the hub descriptor length\r | |
371 | //\r | |
372 | Status = UsbHubCtrlGetHubDesc (HubDev, HubDesc, 2);\r | |
373 | \r | |
374 | if (EFI_ERROR (Status)) {\r | |
375 | return Status;\r | |
376 | }\r | |
377 | \r | |
378 | //\r | |
379 | // Get the whole hub descriptor\r | |
380 | //\r | |
381 | return UsbHubCtrlGetHubDesc (HubDev, HubDesc, HubDesc->Length);\r | |
382 | }\r | |
383 | \r | |
384 | /**\r | |
385 | Ack the hub change bits. If these bits are not ACKed, Hub will\r | |
386 | always return changed bit map from its interrupt endpoint.\r | |
387 | \r | |
388 | @param HubDev The hub device.\r | |
389 | \r | |
390 | @retval EFI_SUCCESS The hub change status is ACKed.\r | |
391 | @retval Others Failed to ACK the hub status.\r | |
392 | \r | |
393 | **/\r | |
394 | EFI_STATUS\r | |
395 | UsbHubAckHubStatus (\r | |
396 | IN USB_DEVICE *HubDev\r | |
397 | )\r | |
398 | {\r | |
399 | EFI_USB_PORT_STATUS HubState;\r | |
400 | EFI_STATUS Status;\r | |
401 | \r | |
402 | Status = UsbHubCtrlGetHubStatus (HubDev, (UINT32 *)&HubState);\r | |
403 | \r | |
404 | if (EFI_ERROR (Status)) {\r | |
405 | return Status;\r | |
406 | }\r | |
407 | \r | |
408 | if (USB_BIT_IS_SET (HubState.PortChangeStatus, USB_HUB_STAT_C_LOCAL_POWER)) {\r | |
409 | UsbHubCtrlClearHubFeature (HubDev, USB_HUB_C_HUB_LOCAL_POWER);\r | |
410 | }\r | |
411 | \r | |
412 | if (USB_BIT_IS_SET (HubState.PortChangeStatus, USB_HUB_STAT_C_OVER_CURRENT)) {\r | |
413 | UsbHubCtrlClearHubFeature (HubDev, USB_HUB_C_HUB_OVER_CURRENT);\r | |
414 | }\r | |
415 | \r | |
416 | return EFI_SUCCESS;\r | |
417 | }\r | |
418 | \r | |
419 | /**\r | |
420 | Test whether the interface is a hub interface.\r | |
421 | \r | |
422 | @param UsbIf The interface to test.\r | |
423 | \r | |
424 | @retval TRUE The interface is a hub interface.\r | |
425 | @retval FALSE The interface isn't a hub interface.\r | |
426 | \r | |
427 | **/\r | |
428 | BOOLEAN\r | |
429 | UsbIsHubInterface (\r | |
430 | IN USB_INTERFACE *UsbIf\r | |
431 | )\r | |
432 | {\r | |
433 | EFI_USB_INTERFACE_DESCRIPTOR *Setting;\r | |
434 | \r | |
435 | //\r | |
436 | // If the hub is a high-speed hub with multiple TT,\r | |
437 | // the hub will has a default setting of single TT.\r | |
438 | //\r | |
439 | Setting = &UsbIf->IfSetting->Desc;\r | |
440 | \r | |
441 | if ((Setting->InterfaceClass == USB_HUB_CLASS_CODE) &&\r | |
442 | (Setting->InterfaceSubClass == USB_HUB_SUBCLASS_CODE))\r | |
443 | {\r | |
444 | return TRUE;\r | |
445 | }\r | |
446 | \r | |
447 | return FALSE;\r | |
448 | }\r | |
449 | \r | |
450 | /**\r | |
451 | The callback function to the USB hub status change\r | |
452 | interrupt endpoint. It is called periodically by\r | |
453 | the underlying host controller.\r | |
454 | \r | |
455 | @param Data The data read.\r | |
456 | @param DataLength The length of the data read.\r | |
457 | @param Context The context.\r | |
458 | @param Result The result of the last interrupt transfer.\r | |
459 | \r | |
460 | @retval EFI_SUCCESS The process is OK.\r | |
461 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource.\r | |
462 | \r | |
463 | **/\r | |
464 | EFI_STATUS\r | |
465 | EFIAPI\r | |
466 | UsbOnHubInterrupt (\r | |
467 | IN VOID *Data,\r | |
468 | IN UINTN DataLength,\r | |
469 | IN VOID *Context,\r | |
470 | IN UINT32 Result\r | |
471 | )\r | |
472 | {\r | |
473 | USB_INTERFACE *HubIf;\r | |
474 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
475 | EFI_USB_ENDPOINT_DESCRIPTOR *EpDesc;\r | |
476 | EFI_STATUS Status;\r | |
477 | \r | |
478 | HubIf = (USB_INTERFACE *)Context;\r | |
479 | UsbIo = &(HubIf->UsbIo);\r | |
480 | EpDesc = &(HubIf->HubEp->Desc);\r | |
481 | \r | |
482 | if (Result != EFI_USB_NOERROR) {\r | |
483 | //\r | |
484 | // If endpoint is stalled, clear the stall. Use UsbIo to access\r | |
485 | // the control transfer so internal status are maintained.\r | |
486 | //\r | |
487 | if (USB_BIT_IS_SET (Result, EFI_USB_ERR_STALL)) {\r | |
488 | UsbIoClearFeature (\r | |
489 | UsbIo,\r | |
490 | USB_TARGET_ENDPOINT,\r | |
491 | USB_FEATURE_ENDPOINT_HALT,\r | |
492 | EpDesc->EndpointAddress\r | |
493 | );\r | |
494 | }\r | |
495 | \r | |
496 | //\r | |
497 | // Delete and submit a new async interrupt\r | |
498 | //\r | |
499 | Status = UsbIo->UsbAsyncInterruptTransfer (\r | |
500 | UsbIo,\r | |
501 | EpDesc->EndpointAddress,\r | |
502 | FALSE,\r | |
503 | 0,\r | |
504 | 0,\r | |
505 | NULL,\r | |
506 | NULL\r | |
507 | );\r | |
508 | \r | |
509 | if (EFI_ERROR (Status)) {\r | |
510 | DEBUG ((DEBUG_ERROR, "UsbOnHubInterrupt: failed to remove async transfer - %r\n", Status));\r | |
511 | return Status;\r | |
512 | }\r | |
513 | \r | |
514 | Status = UsbIo->UsbAsyncInterruptTransfer (\r | |
515 | UsbIo,\r | |
516 | EpDesc->EndpointAddress,\r | |
517 | TRUE,\r | |
518 | USB_HUB_POLL_INTERVAL,\r | |
519 | HubIf->NumOfPort / 8 + 1,\r | |
520 | UsbOnHubInterrupt,\r | |
521 | HubIf\r | |
522 | );\r | |
523 | \r | |
524 | if (EFI_ERROR (Status)) {\r | |
525 | DEBUG ((DEBUG_ERROR, "UsbOnHubInterrupt: failed to submit new async transfer - %r\n", Status));\r | |
526 | }\r | |
527 | \r | |
528 | return Status;\r | |
529 | }\r | |
530 | \r | |
531 | if ((DataLength == 0) || (Data == NULL)) {\r | |
532 | return EFI_SUCCESS;\r | |
533 | }\r | |
534 | \r | |
535 | //\r | |
536 | // OK, actually something is changed, save the change map\r | |
537 | // then signal the HUB to do enumeration. This is a good\r | |
538 | // practise since UsbOnHubInterrupt is called in the context\r | |
539 | // of host controller's AsyncInterrupt monitor.\r | |
540 | //\r | |
541 | HubIf->ChangeMap = AllocateZeroPool (DataLength);\r | |
542 | \r | |
543 | if (HubIf->ChangeMap == NULL) {\r | |
544 | return EFI_OUT_OF_RESOURCES;\r | |
545 | }\r | |
546 | \r | |
547 | CopyMem (HubIf->ChangeMap, Data, DataLength);\r | |
548 | gBS->SignalEvent (HubIf->HubNotify);\r | |
549 | \r | |
550 | return EFI_SUCCESS;\r | |
551 | }\r | |
552 | \r | |
553 | /**\r | |
554 | Initialize the device for a non-root hub.\r | |
555 | \r | |
556 | @param HubIf The USB hub interface.\r | |
557 | \r | |
558 | @retval EFI_SUCCESS The hub is initialized.\r | |
559 | @retval EFI_DEVICE_ERROR Failed to initialize the hub.\r | |
560 | \r | |
561 | **/\r | |
562 | EFI_STATUS\r | |
563 | UsbHubInit (\r | |
564 | IN USB_INTERFACE *HubIf\r | |
565 | )\r | |
566 | {\r | |
567 | UINT8 HubDescBuffer[256];\r | |
568 | EFI_USB_HUB_DESCRIPTOR *HubDesc;\r | |
569 | USB_ENDPOINT_DESC *EpDesc;\r | |
570 | USB_INTERFACE_SETTING *Setting;\r | |
571 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
572 | USB_DEVICE *HubDev;\r | |
573 | EFI_STATUS Status;\r | |
574 | UINT8 Index;\r | |
575 | UINT8 NumEndpoints;\r | |
576 | UINT16 Depth;\r | |
577 | \r | |
578 | //\r | |
579 | // Locate the interrupt endpoint for port change map\r | |
580 | //\r | |
581 | HubIf->IsHub = FALSE;\r | |
582 | Setting = HubIf->IfSetting;\r | |
583 | HubDev = HubIf->Device;\r | |
584 | EpDesc = NULL;\r | |
585 | NumEndpoints = Setting->Desc.NumEndpoints;\r | |
586 | \r | |
587 | for (Index = 0; Index < NumEndpoints; Index++) {\r | |
588 | ASSERT ((Setting->Endpoints != NULL) && (Setting->Endpoints[Index] != NULL));\r | |
589 | \r | |
590 | EpDesc = Setting->Endpoints[Index];\r | |
591 | \r | |
592 | if (USB_BIT_IS_SET (EpDesc->Desc.EndpointAddress, USB_ENDPOINT_DIR_IN) &&\r | |
593 | (USB_ENDPOINT_TYPE (&EpDesc->Desc) == USB_ENDPOINT_INTERRUPT))\r | |
594 | {\r | |
595 | break;\r | |
596 | }\r | |
597 | }\r | |
598 | \r | |
599 | if (Index == NumEndpoints) {\r | |
600 | DEBUG ((DEBUG_ERROR, "UsbHubInit: no interrupt endpoint found for hub %d\n", HubDev->Address));\r | |
601 | return EFI_DEVICE_ERROR;\r | |
602 | }\r | |
603 | \r | |
604 | //\r | |
605 | // The length field of descriptor is UINT8 type, so the buffer\r | |
606 | // with 256 bytes is enough to hold the descriptor data.\r | |
607 | //\r | |
608 | HubDesc = (EFI_USB_HUB_DESCRIPTOR *)HubDescBuffer;\r | |
609 | Status = UsbHubReadDesc (HubDev, HubDesc);\r | |
610 | \r | |
611 | if (EFI_ERROR (Status)) {\r | |
612 | DEBUG ((DEBUG_ERROR, "UsbHubInit: failed to read HUB descriptor - %r\n", Status));\r | |
613 | return Status;\r | |
614 | }\r | |
615 | \r | |
616 | HubIf->NumOfPort = HubDesc->NumPorts;\r | |
617 | \r | |
618 | DEBUG ((DEBUG_INFO, "UsbHubInit: hub %d has %d ports\n", HubDev->Address, HubIf->NumOfPort));\r | |
619 | \r | |
620 | //\r | |
621 | // OK, set IsHub to TRUE. Now usb bus can handle this device\r | |
622 | // as a working HUB. If failed earlier, bus driver will not\r | |
623 | // recognize it as a hub. Other parts of the bus should be able\r | |
624 | // to work.\r | |
625 | //\r | |
626 | HubIf->IsHub = TRUE;\r | |
627 | HubIf->HubApi = &mUsbHubApi;\r | |
628 | HubIf->HubEp = EpDesc;\r | |
629 | \r | |
630 | if (HubIf->Device->Speed == EFI_USB_SPEED_SUPER) {\r | |
631 | Depth = (UINT16)(HubIf->Device->Tier - 1);\r | |
632 | DEBUG ((DEBUG_INFO, "UsbHubInit: Set Hub Depth as 0x%x\n", Depth));\r | |
633 | UsbHubCtrlSetHubDepth (HubIf->Device, Depth);\r | |
634 | \r | |
635 | for (Index = 0; Index < HubDesc->NumPorts; Index++) {\r | |
636 | UsbHubCtrlSetPortFeature (HubIf->Device, Index, USB_HUB_PORT_REMOTE_WAKE_MASK);\r | |
637 | }\r | |
638 | } else {\r | |
639 | //\r | |
640 | // Feed power to all the hub ports. It should be ok\r | |
641 | // for both gang/individual powered hubs.\r | |
642 | //\r | |
643 | for (Index = 0; Index < HubDesc->NumPorts; Index++) {\r | |
644 | UsbHubCtrlSetPortFeature (HubIf->Device, Index, (EFI_USB_PORT_FEATURE)USB_HUB_PORT_POWER);\r | |
645 | }\r | |
646 | \r | |
647 | //\r | |
648 | // Update for the usb hub has no power on delay requirement\r | |
649 | //\r | |
650 | if (HubDesc->PwrOn2PwrGood > 0) {\r | |
651 | gBS->Stall (HubDesc->PwrOn2PwrGood * USB_SET_PORT_POWER_STALL);\r | |
652 | }\r | |
653 | \r | |
654 | UsbHubAckHubStatus (HubIf->Device);\r | |
655 | }\r | |
656 | \r | |
657 | //\r | |
658 | // Create an event to enumerate the hub's port. On\r | |
659 | //\r | |
660 | Status = gBS->CreateEvent (\r | |
661 | EVT_NOTIFY_SIGNAL,\r | |
662 | TPL_CALLBACK,\r | |
663 | UsbHubEnumeration,\r | |
664 | HubIf,\r | |
665 | &HubIf->HubNotify\r | |
666 | );\r | |
667 | \r | |
668 | if (EFI_ERROR (Status)) {\r | |
669 | DEBUG ((\r | |
670 | DEBUG_ERROR,\r | |
671 | "UsbHubInit: failed to create signal for hub %d - %r\n",\r | |
672 | HubDev->Address,\r | |
673 | Status\r | |
674 | ));\r | |
675 | \r | |
676 | return Status;\r | |
677 | }\r | |
678 | \r | |
679 | //\r | |
680 | // Create AsyncInterrupt to query hub port change endpoint\r | |
681 | // periodically. If the hub ports are changed, hub will return\r | |
682 | // changed port map from the interrupt endpoint. The port map\r | |
683 | // must be able to hold (HubIf->NumOfPort + 1) bits (one bit for\r | |
684 | // host change status).\r | |
685 | //\r | |
686 | UsbIo = &HubIf->UsbIo;\r | |
687 | Status = UsbIo->UsbAsyncInterruptTransfer (\r | |
688 | UsbIo,\r | |
689 | EpDesc->Desc.EndpointAddress,\r | |
690 | TRUE,\r | |
691 | USB_HUB_POLL_INTERVAL,\r | |
692 | HubIf->NumOfPort / 8 + 1,\r | |
693 | UsbOnHubInterrupt,\r | |
694 | HubIf\r | |
695 | );\r | |
696 | \r | |
697 | if (EFI_ERROR (Status)) {\r | |
698 | DEBUG ((\r | |
699 | DEBUG_ERROR,\r | |
700 | "UsbHubInit: failed to queue interrupt transfer for hub %d - %r\n",\r | |
701 | HubDev->Address,\r | |
702 | Status\r | |
703 | ));\r | |
704 | \r | |
705 | gBS->CloseEvent (HubIf->HubNotify);\r | |
706 | HubIf->HubNotify = NULL;\r | |
707 | \r | |
708 | return Status;\r | |
709 | }\r | |
710 | \r | |
711 | DEBUG ((DEBUG_INFO, "UsbHubInit: hub %d initialized\n", HubDev->Address));\r | |
712 | return Status;\r | |
713 | }\r | |
714 | \r | |
715 | /**\r | |
716 | Get the port status. This function is required to\r | |
717 | ACK the port change bits although it will return\r | |
718 | the port changes in PortState. Bus enumeration code\r | |
719 | doesn't need to ACK the port change bits.\r | |
720 | \r | |
721 | @param HubIf The hub interface.\r | |
722 | @param Port The port of the hub to get state.\r | |
723 | @param PortState Variable to return the port state.\r | |
724 | \r | |
725 | @retval EFI_SUCCESS The port status is successfully returned.\r | |
726 | @retval Others Failed to return the status.\r | |
727 | \r | |
728 | **/\r | |
729 | EFI_STATUS\r | |
730 | UsbHubGetPortStatus (\r | |
731 | IN USB_INTERFACE *HubIf,\r | |
732 | IN UINT8 Port,\r | |
733 | OUT EFI_USB_PORT_STATUS *PortState\r | |
734 | )\r | |
735 | {\r | |
736 | EFI_STATUS Status;\r | |
737 | \r | |
738 | Status = UsbHubCtrlGetPortStatus (HubIf->Device, Port, PortState);\r | |
739 | \r | |
740 | return Status;\r | |
741 | }\r | |
742 | \r | |
743 | /**\r | |
744 | Clear the port change status.\r | |
745 | \r | |
746 | @param HubIf The hub interface.\r | |
747 | @param Port The hub port.\r | |
748 | \r | |
749 | **/\r | |
750 | VOID\r | |
751 | UsbHubClearPortChange (\r | |
752 | IN USB_INTERFACE *HubIf,\r | |
753 | IN UINT8 Port\r | |
754 | )\r | |
755 | {\r | |
756 | EFI_USB_PORT_STATUS PortState;\r | |
757 | USB_CHANGE_FEATURE_MAP *Map;\r | |
758 | UINTN Index;\r | |
759 | EFI_STATUS Status;\r | |
760 | \r | |
761 | Status = UsbHubGetPortStatus (HubIf, Port, &PortState);\r | |
762 | \r | |
763 | if (EFI_ERROR (Status)) {\r | |
764 | return;\r | |
765 | }\r | |
766 | \r | |
767 | //\r | |
768 | // OK, get the usb port status, now ACK the change bits.\r | |
769 | // Don't return error when failed to clear the change bits.\r | |
770 | // It may lead to extra port state report. USB bus should\r | |
771 | // be able to handle this.\r | |
772 | //\r | |
773 | for (Index = 0; Index < ARRAY_SIZE (mHubFeatureMap); Index++) {\r | |
774 | Map = &mHubFeatureMap[Index];\r | |
775 | \r | |
776 | if (USB_BIT_IS_SET (PortState.PortChangeStatus, Map->ChangedBit)) {\r | |
777 | UsbHubCtrlClearPortFeature (HubIf->Device, Port, (UINT16)Map->Feature);\r | |
778 | }\r | |
779 | }\r | |
780 | }\r | |
781 | \r | |
782 | /**\r | |
783 | Function to set the port feature for non-root hub.\r | |
784 | \r | |
785 | @param HubIf The hub interface.\r | |
786 | @param Port The port of the hub.\r | |
787 | @param Feature The feature of the port to set.\r | |
788 | \r | |
789 | @retval EFI_SUCCESS The hub port feature is set.\r | |
790 | @retval Others Failed to set the port feature.\r | |
791 | \r | |
792 | **/\r | |
793 | EFI_STATUS\r | |
794 | UsbHubSetPortFeature (\r | |
795 | IN USB_INTERFACE *HubIf,\r | |
796 | IN UINT8 Port,\r | |
797 | IN EFI_USB_PORT_FEATURE Feature\r | |
798 | )\r | |
799 | {\r | |
800 | EFI_STATUS Status;\r | |
801 | \r | |
802 | Status = UsbHubCtrlSetPortFeature (HubIf->Device, Port, (UINT8)Feature);\r | |
803 | \r | |
804 | return Status;\r | |
805 | }\r | |
806 | \r | |
807 | /**\r | |
808 | Interface function to clear the port feature for non-root hub.\r | |
809 | \r | |
810 | @param HubIf The hub interface.\r | |
811 | @param Port The port of the hub to clear feature for.\r | |
812 | @param Feature The feature to clear.\r | |
813 | \r | |
814 | @retval EFI_SUCCESS The port feature is cleared.\r | |
815 | @retval Others Failed to clear the port feature.\r | |
816 | \r | |
817 | **/\r | |
818 | EFI_STATUS\r | |
819 | UsbHubClearPortFeature (\r | |
820 | IN USB_INTERFACE *HubIf,\r | |
821 | IN UINT8 Port,\r | |
822 | IN EFI_USB_PORT_FEATURE Feature\r | |
823 | )\r | |
824 | {\r | |
825 | EFI_STATUS Status;\r | |
826 | \r | |
827 | Status = UsbHubCtrlClearPortFeature (HubIf->Device, Port, (UINT8)Feature);\r | |
828 | \r | |
829 | return Status;\r | |
830 | }\r | |
831 | \r | |
832 | /**\r | |
833 | Interface function to reset the port.\r | |
834 | \r | |
835 | @param HubIf The hub interface.\r | |
836 | @param Port The port to reset.\r | |
837 | \r | |
838 | @retval EFI_SUCCESS The hub port is reset.\r | |
839 | @retval EFI_TIMEOUT Failed to reset the port in time.\r | |
840 | @retval Others Failed to reset the port.\r | |
841 | \r | |
842 | **/\r | |
843 | EFI_STATUS\r | |
844 | UsbHubResetPort (\r | |
845 | IN USB_INTERFACE *HubIf,\r | |
846 | IN UINT8 Port\r | |
847 | )\r | |
848 | {\r | |
849 | EFI_USB_PORT_STATUS PortState;\r | |
850 | UINTN Index;\r | |
851 | EFI_STATUS Status;\r | |
852 | \r | |
853 | Status = UsbHubSetPortFeature (HubIf, Port, (EFI_USB_PORT_FEATURE)USB_HUB_PORT_RESET);\r | |
854 | \r | |
855 | if (EFI_ERROR (Status)) {\r | |
856 | return Status;\r | |
857 | }\r | |
858 | \r | |
859 | //\r | |
860 | // Drive the reset signal for worst 20ms. Check USB 2.0 Spec\r | |
861 | // section 7.1.7.5 for timing requirements.\r | |
862 | //\r | |
863 | gBS->Stall (USB_SET_PORT_RESET_STALL);\r | |
864 | \r | |
865 | //\r | |
866 | // Check USB_PORT_STAT_C_RESET bit to see if the resetting state is done.\r | |
867 | //\r | |
868 | ZeroMem (&PortState, sizeof (EFI_USB_PORT_STATUS));\r | |
869 | \r | |
870 | for (Index = 0; Index < USB_WAIT_PORT_STS_CHANGE_LOOP; Index++) {\r | |
871 | Status = UsbHubGetPortStatus (HubIf, Port, &PortState);\r | |
872 | \r | |
873 | if (EFI_ERROR (Status)) {\r | |
874 | return Status;\r | |
875 | }\r | |
876 | \r | |
877 | if (!EFI_ERROR (Status) &&\r | |
878 | USB_BIT_IS_SET (PortState.PortChangeStatus, USB_PORT_STAT_C_RESET))\r | |
879 | {\r | |
880 | gBS->Stall (USB_SET_PORT_RECOVERY_STALL);\r | |
881 | return EFI_SUCCESS;\r | |
882 | }\r | |
883 | \r | |
884 | gBS->Stall (USB_WAIT_PORT_STS_CHANGE_STALL);\r | |
885 | }\r | |
886 | \r | |
887 | return EFI_TIMEOUT;\r | |
888 | }\r | |
889 | \r | |
890 | /**\r | |
891 | Release the hub's control of the interface.\r | |
892 | \r | |
893 | @param HubIf The hub interface.\r | |
894 | \r | |
895 | @retval EFI_SUCCESS The interface is release of hub control.\r | |
896 | \r | |
897 | **/\r | |
898 | EFI_STATUS\r | |
899 | UsbHubRelease (\r | |
900 | IN USB_INTERFACE *HubIf\r | |
901 | )\r | |
902 | {\r | |
903 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
904 | EFI_STATUS Status;\r | |
905 | \r | |
906 | UsbIo = &HubIf->UsbIo;\r | |
907 | Status = UsbIo->UsbAsyncInterruptTransfer (\r | |
908 | UsbIo,\r | |
909 | HubIf->HubEp->Desc.EndpointAddress,\r | |
910 | FALSE,\r | |
911 | USB_HUB_POLL_INTERVAL,\r | |
912 | 0,\r | |
913 | NULL,\r | |
914 | 0\r | |
915 | );\r | |
916 | \r | |
917 | if (EFI_ERROR (Status)) {\r | |
918 | return Status;\r | |
919 | }\r | |
920 | \r | |
921 | gBS->CloseEvent (HubIf->HubNotify);\r | |
922 | \r | |
923 | HubIf->IsHub = FALSE;\r | |
924 | HubIf->HubApi = NULL;\r | |
925 | HubIf->HubEp = NULL;\r | |
926 | HubIf->HubNotify = NULL;\r | |
927 | \r | |
928 | DEBUG ((DEBUG_INFO, "UsbHubRelease: hub device %d released\n", HubIf->Device->Address));\r | |
929 | return EFI_SUCCESS;\r | |
930 | }\r | |
931 | \r | |
932 | /**\r | |
933 | Initialize the interface for root hub.\r | |
934 | \r | |
935 | @param HubIf The root hub interface.\r | |
936 | \r | |
937 | @retval EFI_SUCCESS The interface is initialized for root hub.\r | |
938 | @retval Others Failed to initialize the hub.\r | |
939 | \r | |
940 | **/\r | |
941 | EFI_STATUS\r | |
942 | UsbRootHubInit (\r | |
943 | IN USB_INTERFACE *HubIf\r | |
944 | )\r | |
945 | {\r | |
946 | EFI_STATUS Status;\r | |
947 | UINT8 MaxSpeed;\r | |
948 | UINT8 NumOfPort;\r | |
949 | UINT8 Support64;\r | |
950 | \r | |
951 | Status = UsbHcGetCapability (HubIf->Device->Bus, &MaxSpeed, &NumOfPort, &Support64);\r | |
952 | \r | |
953 | if (EFI_ERROR (Status)) {\r | |
954 | return Status;\r | |
955 | }\r | |
956 | \r | |
957 | DEBUG ((\r | |
958 | DEBUG_INFO,\r | |
959 | "UsbRootHubInit: root hub %p - max speed %d, %d ports\n",\r | |
960 | HubIf,\r | |
961 | MaxSpeed,\r | |
962 | NumOfPort\r | |
963 | ));\r | |
964 | \r | |
965 | HubIf->IsHub = TRUE;\r | |
966 | HubIf->HubApi = &mUsbRootHubApi;\r | |
967 | HubIf->HubEp = NULL;\r | |
968 | HubIf->MaxSpeed = MaxSpeed;\r | |
969 | HubIf->NumOfPort = NumOfPort;\r | |
970 | HubIf->HubNotify = NULL;\r | |
971 | \r | |
972 | //\r | |
973 | // Create a timer to poll root hub ports periodically\r | |
974 | //\r | |
975 | Status = gBS->CreateEvent (\r | |
976 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
977 | TPL_CALLBACK,\r | |
978 | UsbRootHubEnumeration,\r | |
979 | HubIf,\r | |
980 | &HubIf->HubNotify\r | |
981 | );\r | |
982 | \r | |
983 | if (EFI_ERROR (Status)) {\r | |
984 | return Status;\r | |
985 | }\r | |
986 | \r | |
987 | //\r | |
988 | // It should signal the event immediately here, or device detection\r | |
989 | // by bus enumeration might be delayed by the timer interval.\r | |
990 | //\r | |
991 | gBS->SignalEvent (HubIf->HubNotify);\r | |
992 | \r | |
993 | Status = gBS->SetTimer (\r | |
994 | HubIf->HubNotify,\r | |
995 | TimerPeriodic,\r | |
996 | USB_ROOTHUB_POLL_INTERVAL\r | |
997 | );\r | |
998 | \r | |
999 | if (EFI_ERROR (Status)) {\r | |
1000 | gBS->CloseEvent (HubIf->HubNotify);\r | |
1001 | }\r | |
1002 | \r | |
1003 | return Status;\r | |
1004 | }\r | |
1005 | \r | |
1006 | /**\r | |
1007 | Get the port status. This function is required to\r | |
1008 | ACK the port change bits although it will return\r | |
1009 | the port changes in PortState. Bus enumeration code\r | |
1010 | doesn't need to ACK the port change bits.\r | |
1011 | \r | |
1012 | @param HubIf The root hub interface.\r | |
1013 | @param Port The root hub port to get the state.\r | |
1014 | @param PortState Variable to return the port state.\r | |
1015 | \r | |
1016 | @retval EFI_SUCCESS The port state is returned.\r | |
1017 | @retval Others Failed to retrieve the port state.\r | |
1018 | \r | |
1019 | **/\r | |
1020 | EFI_STATUS\r | |
1021 | UsbRootHubGetPortStatus (\r | |
1022 | IN USB_INTERFACE *HubIf,\r | |
1023 | IN UINT8 Port,\r | |
1024 | OUT EFI_USB_PORT_STATUS *PortState\r | |
1025 | )\r | |
1026 | {\r | |
1027 | USB_BUS *Bus;\r | |
1028 | EFI_STATUS Status;\r | |
1029 | \r | |
1030 | Bus = HubIf->Device->Bus;\r | |
1031 | Status = UsbHcGetRootHubPortStatus (Bus, Port, PortState);\r | |
1032 | \r | |
1033 | return Status;\r | |
1034 | }\r | |
1035 | \r | |
1036 | /**\r | |
1037 | Clear the port change status.\r | |
1038 | \r | |
1039 | @param HubIf The root hub interface.\r | |
1040 | @param Port The root hub port.\r | |
1041 | \r | |
1042 | **/\r | |
1043 | VOID\r | |
1044 | UsbRootHubClearPortChange (\r | |
1045 | IN USB_INTERFACE *HubIf,\r | |
1046 | IN UINT8 Port\r | |
1047 | )\r | |
1048 | {\r | |
1049 | EFI_USB_PORT_STATUS PortState;\r | |
1050 | USB_CHANGE_FEATURE_MAP *Map;\r | |
1051 | UINTN Index;\r | |
1052 | EFI_STATUS Status;\r | |
1053 | \r | |
1054 | Status = UsbRootHubGetPortStatus (HubIf, Port, &PortState);\r | |
1055 | \r | |
1056 | if (EFI_ERROR (Status)) {\r | |
1057 | return;\r | |
1058 | }\r | |
1059 | \r | |
1060 | //\r | |
1061 | // OK, get the usb port status, now ACK the change bits.\r | |
1062 | // Don't return error when failed to clear the change bits.\r | |
1063 | // It may lead to extra port state report. USB bus should\r | |
1064 | // be able to handle this.\r | |
1065 | //\r | |
1066 | for (Index = 0; Index < ARRAY_SIZE (mRootHubFeatureMap); Index++) {\r | |
1067 | Map = &mRootHubFeatureMap[Index];\r | |
1068 | \r | |
1069 | if (USB_BIT_IS_SET (PortState.PortChangeStatus, Map->ChangedBit)) {\r | |
1070 | UsbHcClearRootHubPortFeature (HubIf->Device->Bus, Port, (EFI_USB_PORT_FEATURE)Map->Feature);\r | |
1071 | }\r | |
1072 | }\r | |
1073 | }\r | |
1074 | \r | |
1075 | /**\r | |
1076 | Set the root hub port feature.\r | |
1077 | \r | |
1078 | @param HubIf The Usb hub interface.\r | |
1079 | @param Port The hub port.\r | |
1080 | @param Feature The feature to set.\r | |
1081 | \r | |
1082 | @retval EFI_SUCCESS The root hub port is set with the feature.\r | |
1083 | @retval Others Failed to set the feature.\r | |
1084 | \r | |
1085 | **/\r | |
1086 | EFI_STATUS\r | |
1087 | UsbRootHubSetPortFeature (\r | |
1088 | IN USB_INTERFACE *HubIf,\r | |
1089 | IN UINT8 Port,\r | |
1090 | IN EFI_USB_PORT_FEATURE Feature\r | |
1091 | )\r | |
1092 | {\r | |
1093 | EFI_STATUS Status;\r | |
1094 | \r | |
1095 | Status = UsbHcSetRootHubPortFeature (HubIf->Device->Bus, Port, Feature);\r | |
1096 | \r | |
1097 | return Status;\r | |
1098 | }\r | |
1099 | \r | |
1100 | /**\r | |
1101 | Clear the root hub port feature.\r | |
1102 | \r | |
1103 | @param HubIf The root hub interface.\r | |
1104 | @param Port The root hub port.\r | |
1105 | @param Feature The feature to clear.\r | |
1106 | \r | |
1107 | @retval EFI_SUCCESS The root hub port is cleared of the feature.\r | |
1108 | @retval Others Failed to clear the feature.\r | |
1109 | \r | |
1110 | **/\r | |
1111 | EFI_STATUS\r | |
1112 | UsbRootHubClearPortFeature (\r | |
1113 | IN USB_INTERFACE *HubIf,\r | |
1114 | IN UINT8 Port,\r | |
1115 | IN EFI_USB_PORT_FEATURE Feature\r | |
1116 | )\r | |
1117 | {\r | |
1118 | EFI_STATUS Status;\r | |
1119 | \r | |
1120 | Status = UsbHcClearRootHubPortFeature (HubIf->Device->Bus, Port, Feature);\r | |
1121 | \r | |
1122 | return Status;\r | |
1123 | }\r | |
1124 | \r | |
1125 | /**\r | |
1126 | Interface function to reset the root hub port.\r | |
1127 | \r | |
1128 | @param RootIf The root hub interface.\r | |
1129 | @param Port The port to reset.\r | |
1130 | \r | |
1131 | @retval EFI_SUCCESS The hub port is reset.\r | |
1132 | @retval EFI_TIMEOUT Failed to reset the port in time.\r | |
1133 | @retval EFI_NOT_FOUND The low/full speed device connected to high speed.\r | |
1134 | root hub is released to the companion UHCI.\r | |
1135 | @retval Others Failed to reset the port.\r | |
1136 | \r | |
1137 | **/\r | |
1138 | EFI_STATUS\r | |
1139 | UsbRootHubResetPort (\r | |
1140 | IN USB_INTERFACE *RootIf,\r | |
1141 | IN UINT8 Port\r | |
1142 | )\r | |
1143 | {\r | |
1144 | USB_BUS *Bus;\r | |
1145 | EFI_STATUS Status;\r | |
1146 | EFI_USB_PORT_STATUS PortState;\r | |
1147 | UINTN Index;\r | |
1148 | \r | |
1149 | //\r | |
1150 | // Notice: although EHCI requires that ENABLED bit be cleared\r | |
1151 | // when reset the port, we don't need to care that here. It\r | |
1152 | // should be handled in the EHCI driver.\r | |
1153 | //\r | |
1154 | Bus = RootIf->Device->Bus;\r | |
1155 | \r | |
1156 | Status = UsbHcSetRootHubPortFeature (Bus, Port, EfiUsbPortReset);\r | |
1157 | \r | |
1158 | if (EFI_ERROR (Status)) {\r | |
1159 | DEBUG ((DEBUG_ERROR, "UsbRootHubResetPort: failed to start reset on port %d\n", Port));\r | |
1160 | return Status;\r | |
1161 | }\r | |
1162 | \r | |
1163 | //\r | |
1164 | // Drive the reset signal for at least 50ms. Check USB 2.0 Spec\r | |
1165 | // section 7.1.7.5 for timing requirements.\r | |
1166 | //\r | |
1167 | gBS->Stall (USB_SET_ROOT_PORT_RESET_STALL);\r | |
1168 | \r | |
1169 | Status = UsbHcClearRootHubPortFeature (Bus, Port, EfiUsbPortReset);\r | |
1170 | \r | |
1171 | if (EFI_ERROR (Status)) {\r | |
1172 | DEBUG ((DEBUG_ERROR, "UsbRootHubResetPort: failed to clear reset on port %d\n", Port));\r | |
1173 | return Status;\r | |
1174 | }\r | |
1175 | \r | |
1176 | gBS->Stall (USB_CLR_ROOT_PORT_RESET_STALL);\r | |
1177 | \r | |
1178 | //\r | |
1179 | // USB host controller won't clear the RESET bit until\r | |
1180 | // reset is actually finished.\r | |
1181 | //\r | |
1182 | ZeroMem (&PortState, sizeof (EFI_USB_PORT_STATUS));\r | |
1183 | \r | |
1184 | for (Index = 0; Index < USB_WAIT_PORT_STS_CHANGE_LOOP; Index++) {\r | |
1185 | Status = UsbHcGetRootHubPortStatus (Bus, Port, &PortState);\r | |
1186 | \r | |
1187 | if (EFI_ERROR (Status)) {\r | |
1188 | return Status;\r | |
1189 | }\r | |
1190 | \r | |
1191 | if (!USB_BIT_IS_SET (PortState.PortStatus, USB_PORT_STAT_RESET)) {\r | |
1192 | break;\r | |
1193 | }\r | |
1194 | \r | |
1195 | gBS->Stall (USB_WAIT_PORT_STS_CHANGE_STALL);\r | |
1196 | }\r | |
1197 | \r | |
1198 | if (Index == USB_WAIT_PORT_STS_CHANGE_LOOP) {\r | |
1199 | DEBUG ((DEBUG_ERROR, "UsbRootHubResetPort: reset not finished in time on port %d\n", Port));\r | |
1200 | return EFI_TIMEOUT;\r | |
1201 | }\r | |
1202 | \r | |
1203 | if (!USB_BIT_IS_SET (PortState.PortStatus, USB_PORT_STAT_ENABLE)) {\r | |
1204 | //\r | |
1205 | // OK, the port is reset. If root hub is of high speed and\r | |
1206 | // the device is of low/full speed, release the ownership to\r | |
1207 | // companion UHCI. If root hub is of full speed, it won't\r | |
1208 | // automatically enable the port, we need to enable it manually.\r | |
1209 | //\r | |
1210 | if (RootIf->MaxSpeed == EFI_USB_SPEED_HIGH) {\r | |
1211 | DEBUG ((DEBUG_ERROR, "UsbRootHubResetPort: release low/full speed device (%d) to UHCI\n", Port));\r | |
1212 | \r | |
1213 | UsbRootHubSetPortFeature (RootIf, Port, EfiUsbPortOwner);\r | |
1214 | return EFI_NOT_FOUND;\r | |
1215 | } else {\r | |
1216 | Status = UsbRootHubSetPortFeature (RootIf, Port, EfiUsbPortEnable);\r | |
1217 | \r | |
1218 | if (EFI_ERROR (Status)) {\r | |
1219 | DEBUG ((DEBUG_ERROR, "UsbRootHubResetPort: failed to enable port %d for UHCI\n", Port));\r | |
1220 | return Status;\r | |
1221 | }\r | |
1222 | \r | |
1223 | gBS->Stall (USB_SET_ROOT_PORT_ENABLE_STALL);\r | |
1224 | }\r | |
1225 | }\r | |
1226 | \r | |
1227 | return EFI_SUCCESS;\r | |
1228 | }\r | |
1229 | \r | |
1230 | /**\r | |
1231 | Release the root hub's control of the interface.\r | |
1232 | \r | |
1233 | @param HubIf The root hub interface.\r | |
1234 | \r | |
1235 | @retval EFI_SUCCESS The root hub's control of the interface is\r | |
1236 | released.\r | |
1237 | \r | |
1238 | **/\r | |
1239 | EFI_STATUS\r | |
1240 | UsbRootHubRelease (\r | |
1241 | IN USB_INTERFACE *HubIf\r | |
1242 | )\r | |
1243 | {\r | |
1244 | DEBUG ((DEBUG_INFO, "UsbRootHubRelease: root hub released for hub %p\n", HubIf));\r | |
1245 | \r | |
1246 | gBS->SetTimer (HubIf->HubNotify, TimerCancel, USB_ROOTHUB_POLL_INTERVAL);\r | |
1247 | gBS->CloseEvent (HubIf->HubNotify);\r | |
1248 | \r | |
1249 | return EFI_SUCCESS;\r | |
1250 | }\r | |
1251 | \r | |
1252 | USB_HUB_API mUsbHubApi = {\r | |
1253 | UsbHubInit,\r | |
1254 | UsbHubGetPortStatus,\r | |
1255 | UsbHubClearPortChange,\r | |
1256 | UsbHubSetPortFeature,\r | |
1257 | UsbHubClearPortFeature,\r | |
1258 | UsbHubResetPort,\r | |
1259 | UsbHubRelease\r | |
1260 | };\r | |
1261 | \r | |
1262 | USB_HUB_API mUsbRootHubApi = {\r | |
1263 | UsbRootHubInit,\r | |
1264 | UsbRootHubGetPortStatus,\r | |
1265 | UsbRootHubClearPortChange,\r | |
1266 | UsbRootHubSetPortFeature,\r | |
1267 | UsbRootHubClearPortFeature,\r | |
1268 | UsbRootHubResetPort,\r | |
1269 | UsbRootHubRelease\r | |
1270 | };\r |