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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 | UhciQueue.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | The UHCI register operation routines.\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | \r | |
23 | **/\r | |
24 | \r | |
25 | #include "Uhci.h"\r | |
26 | \r | |
27 | \r | |
28 | /**\r | |
29 | Map address of request structure buffer\r | |
30 | \r | |
31 | @param Uhc The UHCI device\r | |
32 | @param Request The user request buffer\r | |
33 | @param MappedAddr Mapped address of request\r | |
34 | @param Map Identificaion of this mapping to return\r | |
35 | \r | |
36 | @return EFI_SUCCESS : Success\r | |
37 | @return EFI_DEVICE_ERROR : Fail to map the user request\r | |
38 | \r | |
39 | **/\r | |
40 | EFI_STATUS\r | |
41 | UhciMapUserRequest (\r | |
42 | IN USB_HC_DEV *Uhc,\r | |
43 | IN OUT VOID *Request,\r | |
44 | OUT UINT8 **MappedAddr,\r | |
45 | OUT VOID **Map\r | |
46 | )\r | |
47 | {\r | |
48 | EFI_STATUS Status;\r | |
49 | UINTN Len;\r | |
50 | EFI_PHYSICAL_ADDRESS PhyAddr;\r | |
51 | \r | |
52 | Len = sizeof (EFI_USB_DEVICE_REQUEST);\r | |
53 | Status = Uhc->PciIo->Map (\r | |
54 | Uhc->PciIo,\r | |
55 | EfiPciIoOperationBusMasterRead,\r | |
56 | Request,\r | |
57 | &Len,\r | |
58 | &PhyAddr,\r | |
59 | Map\r | |
60 | );\r | |
61 | \r | |
62 | if (!EFI_ERROR (Status)) {\r | |
63 | *MappedAddr = (UINT8 *) (UINTN) PhyAddr;\r | |
64 | }\r | |
65 | \r | |
66 | return Status;\r | |
67 | }\r | |
68 | \r | |
69 | \r | |
70 | /**\r | |
71 | Map address of user data buffer\r | |
72 | \r | |
73 | @param Uhc The UHCI device\r | |
74 | @param Direction direction of the data transfer\r | |
75 | @param Data The user data buffer\r | |
76 | @param Len Length of the user data\r | |
77 | @param PktId Packet identificaion\r | |
78 | @param MappedAddr mapped address to return\r | |
79 | @param Map identificaion of this mapping to return\r | |
80 | \r | |
81 | @return EFI_SUCCESS : Success\r | |
82 | @return EFI_DEVICE_ERROR : Fail to map the user data\r | |
83 | \r | |
84 | **/\r | |
85 | EFI_STATUS\r | |
86 | UhciMapUserData (\r | |
87 | IN USB_HC_DEV *Uhc,\r | |
88 | IN EFI_USB_DATA_DIRECTION Direction,\r | |
89 | IN VOID *Data,\r | |
90 | IN OUT UINTN *Len,\r | |
91 | OUT UINT8 *PktId,\r | |
92 | OUT UINT8 **MappedAddr,\r | |
93 | OUT VOID **Map\r | |
94 | )\r | |
95 | {\r | |
96 | EFI_STATUS Status;\r | |
97 | EFI_PHYSICAL_ADDRESS PhyAddr;\r | |
98 | \r | |
99 | Status = EFI_SUCCESS;\r | |
100 | \r | |
101 | switch (Direction) {\r | |
102 | case EfiUsbDataIn:\r | |
103 | //\r | |
104 | // BusMasterWrite means cpu read\r | |
105 | //\r | |
106 | *PktId = INPUT_PACKET_ID;\r | |
107 | Status = Uhc->PciIo->Map (\r | |
108 | Uhc->PciIo,\r | |
109 | EfiPciIoOperationBusMasterWrite,\r | |
110 | Data,\r | |
111 | Len,\r | |
112 | &PhyAddr,\r | |
113 | Map\r | |
114 | );\r | |
115 | \r | |
116 | if (EFI_ERROR (Status)) {\r | |
117 | goto EXIT;\r | |
118 | }\r | |
119 | \r | |
120 | *MappedAddr = (UINT8 *) (UINTN) PhyAddr;\r | |
121 | break;\r | |
122 | \r | |
123 | case EfiUsbDataOut:\r | |
124 | *PktId = OUTPUT_PACKET_ID;\r | |
125 | Status = Uhc->PciIo->Map (\r | |
126 | Uhc->PciIo,\r | |
127 | EfiPciIoOperationBusMasterRead,\r | |
128 | Data,\r | |
129 | Len,\r | |
130 | &PhyAddr,\r | |
131 | Map\r | |
132 | );\r | |
133 | \r | |
134 | if (EFI_ERROR (Status)) {\r | |
135 | goto EXIT;\r | |
136 | }\r | |
137 | \r | |
138 | *MappedAddr = (UINT8 *) (UINTN) PhyAddr;\r | |
139 | break;\r | |
140 | \r | |
141 | case EfiUsbNoData:\r | |
142 | if ((Len != NULL) && (*Len != 0)) {\r | |
143 | Status = EFI_INVALID_PARAMETER;\r | |
144 | goto EXIT;\r | |
145 | }\r | |
146 | \r | |
147 | *PktId = OUTPUT_PACKET_ID;\r | |
148 | *Len = 0;\r | |
149 | *MappedAddr = NULL;\r | |
150 | *Map = NULL;\r | |
151 | break;\r | |
152 | \r | |
153 | default:\r | |
154 | Status = EFI_INVALID_PARAMETER;\r | |
155 | }\r | |
156 | \r | |
157 | EXIT:\r | |
158 | return Status;\r | |
159 | }\r | |
160 | \r | |
161 | \r | |
162 | \r | |
163 | /**\r | |
164 | Link the TD To QH\r | |
165 | \r | |
166 | @param Qh The queue head for the TD to link to\r | |
167 | @param Td The TD to link\r | |
168 | \r | |
169 | @return VOID\r | |
170 | \r | |
171 | **/\r | |
172 | VOID\r | |
173 | UhciLinkTdToQh (\r | |
174 | IN UHCI_QH_SW *Qh,\r | |
175 | IN UHCI_TD_SW *Td\r | |
176 | )\r | |
177 | {\r | |
178 | ASSERT ((Qh != NULL) && (Td != NULL));\r | |
179 | \r | |
180 | Qh->QhHw.VerticalLink = QH_VLINK (Td, FALSE);\r | |
181 | Qh->TDs = (VOID *) Td;\r | |
182 | }\r | |
183 | \r | |
184 | \r | |
185 | /**\r | |
186 | Unlink TD from the QH\r | |
187 | \r | |
188 | @param Qh The queue head to unlink from\r | |
189 | @param Td The TD to unlink\r | |
190 | \r | |
191 | @return VOID\r | |
192 | \r | |
193 | **/\r | |
194 | VOID\r | |
195 | UhciUnlinkTdFromQh (\r | |
196 | IN UHCI_QH_SW *Qh,\r | |
197 | IN UHCI_TD_SW *Td\r | |
198 | )\r | |
199 | {\r | |
200 | ASSERT ((Qh != NULL) && (Td != NULL));\r | |
201 | \r | |
202 | Qh->QhHw.VerticalLink = QH_VLINK (NULL, TRUE);\r | |
203 | Qh->TDs = NULL;\r | |
204 | }\r | |
205 | \r | |
206 | \r | |
207 | /**\r | |
208 | Append a new TD To the previous TD\r | |
209 | \r | |
210 | @param PrevTd Previous UHCI_TD_SW to be linked to\r | |
211 | @param ThisTd TD to link\r | |
212 | \r | |
213 | @return VOID\r | |
214 | \r | |
215 | **/\r | |
216 | STATIC\r | |
217 | VOID\r | |
218 | UhciAppendTd (\r | |
219 | IN UHCI_TD_SW *PrevTd,\r | |
220 | IN UHCI_TD_SW *ThisTd\r | |
221 | )\r | |
222 | {\r | |
223 | ASSERT ((PrevTd != NULL) && (ThisTd != NULL));\r | |
224 | \r | |
225 | PrevTd->TdHw.NextLink = TD_LINK (ThisTd, TRUE, FALSE);\r | |
226 | PrevTd->NextTd = (VOID *) ThisTd;\r | |
227 | }\r | |
228 | \r | |
229 | \r | |
230 | /**\r | |
231 | Delete a list of TDs\r | |
232 | \r | |
233 | @param Uhc The UHCI device\r | |
234 | @param FirstTd TD link list head\r | |
235 | \r | |
236 | @return VOID\r | |
237 | \r | |
238 | **/\r | |
239 | VOID\r | |
240 | UhciDestoryTds (\r | |
241 | IN USB_HC_DEV *Uhc,\r | |
242 | IN UHCI_TD_SW *FirstTd\r | |
243 | )\r | |
244 | {\r | |
245 | UHCI_TD_SW *NextTd;\r | |
246 | UHCI_TD_SW *ThisTd;\r | |
247 | \r | |
248 | NextTd = FirstTd;\r | |
249 | \r | |
250 | while (NextTd != NULL) {\r | |
251 | ThisTd = NextTd;\r | |
252 | NextTd = ThisTd->NextTd;\r | |
253 | UsbHcFreeMem (Uhc->MemPool, ThisTd, sizeof (UHCI_TD_SW));\r | |
254 | }\r | |
255 | }\r | |
256 | \r | |
257 | \r | |
258 | /**\r | |
259 | Create an initialize a new queue head\r | |
260 | \r | |
261 | @param Uhc The UHCI device\r | |
262 | @param Interval The polling interval for the queue\r | |
263 | \r | |
264 | @return The newly created queue header\r | |
265 | \r | |
266 | **/\r | |
267 | UHCI_QH_SW *\r | |
268 | UhciCreateQh (\r | |
269 | IN USB_HC_DEV *Uhc,\r | |
270 | IN UINTN Interval\r | |
271 | )\r | |
272 | {\r | |
273 | UHCI_QH_SW *Qh;\r | |
274 | \r | |
275 | Qh = UsbHcAllocateMem (Uhc->MemPool, sizeof (UHCI_QH_SW));\r | |
276 | \r | |
277 | if (Qh == NULL) {\r | |
278 | return NULL;\r | |
279 | }\r | |
280 | \r | |
281 | Qh->QhHw.HorizonLink = QH_HLINK (NULL, TRUE);\r | |
282 | Qh->QhHw.VerticalLink = QH_VLINK (NULL, TRUE);\r | |
283 | Qh->Interval = Interval;\r | |
284 | Qh->TDs = NULL;\r | |
285 | Qh->NextQh = NULL;\r | |
286 | \r | |
287 | return Qh;\r | |
288 | }\r | |
289 | \r | |
290 | \r | |
291 | /**\r | |
292 | Create and intialize a TD\r | |
293 | \r | |
294 | @param Uhc The UHCI device\r | |
295 | \r | |
296 | @return The newly allocated and initialized TD\r | |
297 | \r | |
298 | **/\r | |
299 | STATIC\r | |
300 | UHCI_TD_SW *\r | |
301 | UhciCreateTd (\r | |
302 | IN USB_HC_DEV *Uhc\r | |
303 | )\r | |
304 | {\r | |
305 | UHCI_TD_SW *Td;\r | |
306 | \r | |
307 | Td = UsbHcAllocateMem (Uhc->MemPool, sizeof (UHCI_TD_SW));\r | |
308 | if (Td == NULL) {\r | |
309 | return NULL;\r | |
310 | }\r | |
311 | \r | |
312 | Td->TdHw.NextLink = TD_LINK (NULL, FALSE, TRUE);\r | |
313 | Td->NextTd = NULL;\r | |
314 | Td->Data = NULL;\r | |
315 | Td->DataLen = 0;\r | |
316 | \r | |
317 | return Td;\r | |
318 | }\r | |
319 | \r | |
320 | \r | |
321 | /**\r | |
322 | Create and initialize a TD for Setup Stage of a control transfer\r | |
323 | \r | |
324 | @param Uhc The UHCI device\r | |
325 | @param DevAddr Device address\r | |
326 | @param Request Device request\r | |
327 | @param IsLow Full speed or low speed\r | |
328 | \r | |
329 | @return The created setup Td Pointer\r | |
330 | \r | |
331 | **/\r | |
332 | STATIC\r | |
333 | UHCI_TD_SW *\r | |
334 | UhciCreateSetupTd (\r | |
335 | IN USB_HC_DEV *Uhc,\r | |
336 | IN UINT8 DevAddr,\r | |
337 | IN UINT8 *Request,\r | |
338 | IN BOOLEAN IsLow\r | |
339 | )\r | |
340 | {\r | |
341 | UHCI_TD_SW *Td;\r | |
342 | \r | |
343 | Td = UhciCreateTd (Uhc);\r | |
344 | \r | |
345 | if (Td == NULL) {\r | |
346 | return NULL;\r | |
347 | }\r | |
348 | \r | |
349 | Td->TdHw.NextLink = TD_LINK (NULL, TRUE, TRUE);\r | |
350 | Td->TdHw.ShortPacket = FALSE;\r | |
351 | Td->TdHw.IsIsoch = FALSE;\r | |
352 | Td->TdHw.IntOnCpl = FALSE;\r | |
353 | Td->TdHw.ErrorCount = 0x03;\r | |
354 | Td->TdHw.Status |= USBTD_ACTIVE;\r | |
355 | Td->TdHw.DataToggle = 0;\r | |
356 | Td->TdHw.EndPoint = 0;\r | |
357 | Td->TdHw.LowSpeed = IsLow ? 1 : 0;\r | |
358 | Td->TdHw.DeviceAddr = DevAddr & 0x7F;\r | |
359 | Td->TdHw.MaxPacketLen = (UINT32) (sizeof (EFI_USB_DEVICE_REQUEST) - 1);\r | |
360 | Td->TdHw.PidCode = SETUP_PACKET_ID;\r | |
361 | Td->TdHw.DataBuffer = (UINT32) (UINTN) Request;\r | |
362 | \r | |
363 | Td->Data = Request;\r | |
364 | Td->DataLen = sizeof (EFI_USB_DEVICE_REQUEST);\r | |
365 | \r | |
366 | return Td;\r | |
367 | }\r | |
368 | \r | |
369 | \r | |
370 | /**\r | |
371 | Create a TD for data\r | |
372 | \r | |
373 | @param Uhc The UHCI device\r | |
374 | @param DevAddr Device address\r | |
375 | @param Endpoint Endpoint number\r | |
376 | @param DataPtr Data buffer\r | |
377 | @param Len Data length\r | |
378 | @param PktId Packet ID\r | |
379 | @param Toggle Data toggle value\r | |
380 | @param IsLow Full speed or low speed\r | |
381 | \r | |
382 | @return Data Td pointer if success, otherwise NUL\r | |
383 | \r | |
384 | **/\r | |
385 | STATIC\r | |
386 | UHCI_TD_SW *\r | |
387 | UhciCreateDataTd (\r | |
388 | IN USB_HC_DEV *Uhc,\r | |
389 | IN UINT8 DevAddr,\r | |
390 | IN UINT8 Endpoint,\r | |
391 | IN UINT8 *DataPtr,\r | |
392 | IN UINTN Len,\r | |
393 | IN UINT8 PktId,\r | |
394 | IN UINT8 Toggle,\r | |
395 | IN BOOLEAN IsLow\r | |
396 | )\r | |
397 | {\r | |
398 | UHCI_TD_SW *Td;\r | |
399 | \r | |
400 | //\r | |
401 | // Code as length - 1, and the max valid length is 0x500\r | |
402 | //\r | |
403 | ASSERT (Len <= 0x500);\r | |
404 | \r | |
405 | Td = UhciCreateTd (Uhc);\r | |
406 | \r | |
407 | if (Td == NULL) {\r | |
408 | return NULL;\r | |
409 | }\r | |
410 | \r | |
411 | Td->TdHw.NextLink = TD_LINK (NULL, TRUE, TRUE);\r | |
412 | Td->TdHw.ShortPacket = FALSE;\r | |
413 | Td->TdHw.IsIsoch = FALSE;\r | |
414 | Td->TdHw.IntOnCpl = FALSE;\r | |
415 | Td->TdHw.ErrorCount = 0X03;\r | |
416 | Td->TdHw.Status = USBTD_ACTIVE;\r | |
417 | Td->TdHw.LowSpeed = IsLow ? 1 : 0;\r | |
418 | Td->TdHw.DataToggle = Toggle & 0x01;\r | |
419 | Td->TdHw.EndPoint = Endpoint & 0x0F;\r | |
420 | Td->TdHw.DeviceAddr = DevAddr & 0x7F;\r | |
421 | Td->TdHw.MaxPacketLen = (UINT32) (Len - 1);\r | |
422 | Td->TdHw.PidCode = (UINT8) PktId;\r | |
423 | Td->TdHw.DataBuffer = (UINT32) (UINTN) DataPtr;\r | |
424 | \r | |
425 | Td->Data = DataPtr;\r | |
426 | Td->DataLen = (UINT16) Len;\r | |
427 | \r | |
428 | return Td;\r | |
429 | }\r | |
430 | \r | |
431 | \r | |
432 | /**\r | |
433 | Create TD for the Status Stage of control transfer\r | |
434 | \r | |
435 | @param Uhc The UHCI device\r | |
436 | @param DevAddr Device address\r | |
437 | @param PktId Packet ID\r | |
438 | @param IsLow Full speed or low speed\r | |
439 | \r | |
440 | @return Status Td Pointer\r | |
441 | \r | |
442 | **/\r | |
443 | STATIC\r | |
444 | UHCI_TD_SW *\r | |
445 | UhciCreateStatusTd (\r | |
446 | IN USB_HC_DEV *Uhc,\r | |
447 | IN UINT8 DevAddr,\r | |
448 | IN UINT8 PktId,\r | |
449 | IN BOOLEAN IsLow\r | |
450 | )\r | |
451 | {\r | |
452 | UHCI_TD_SW *Td;\r | |
453 | \r | |
454 | Td = UhciCreateTd (Uhc);\r | |
455 | \r | |
456 | if (Td == NULL) {\r | |
457 | return NULL;\r | |
458 | }\r | |
459 | \r | |
460 | Td->TdHw.NextLink = TD_LINK (NULL, TRUE, TRUE);\r | |
461 | Td->TdHw.ShortPacket = FALSE;\r | |
462 | Td->TdHw.IsIsoch = FALSE;\r | |
463 | Td->TdHw.IntOnCpl = FALSE;\r | |
464 | Td->TdHw.ErrorCount = 0x03;\r | |
465 | Td->TdHw.Status |= USBTD_ACTIVE;\r | |
466 | Td->TdHw.MaxPacketLen = 0x7FF; //0x7FF: there is no data (refer to UHCI spec)\r | |
467 | Td->TdHw.DataToggle = 1;\r | |
468 | Td->TdHw.EndPoint = 0;\r | |
469 | Td->TdHw.LowSpeed = IsLow ? 1 : 0;\r | |
470 | Td->TdHw.DeviceAddr = DevAddr & 0x7F;\r | |
471 | Td->TdHw.PidCode = (UINT8) PktId;\r | |
472 | Td->TdHw.DataBuffer = (UINT32) (UINTN) NULL;\r | |
473 | \r | |
474 | Td->Data = NULL;\r | |
475 | Td->DataLen = 0;\r | |
476 | \r | |
477 | return Td;\r | |
478 | }\r | |
479 | \r | |
480 | \r | |
481 | /**\r | |
482 | Create Tds list for Control Transfer\r | |
483 | \r | |
484 | @param Uhc The UHCI device\r | |
485 | @param DeviceAddr The device address\r | |
486 | @param DataPktId Packet Identification of Data Tds\r | |
487 | @param Request A pointer to request structure buffer to transfer\r | |
488 | @param Data A pointer to user data buffer to transfer\r | |
489 | @param DataLen Length of user data to transfer\r | |
490 | @param MaxPacket Maximum packet size for control transfer\r | |
491 | @param IsLow Full speed or low speed\r | |
492 | \r | |
493 | @return The Td list head for the control transfer\r | |
494 | \r | |
495 | **/\r | |
496 | UHCI_TD_SW *\r | |
497 | UhciCreateCtrlTds (\r | |
498 | IN USB_HC_DEV *Uhc,\r | |
499 | IN UINT8 DeviceAddr,\r | |
500 | IN UINT8 DataPktId,\r | |
501 | IN UINT8 *Request,\r | |
502 | IN UINT8 *Data,\r | |
503 | IN UINTN DataLen,\r | |
504 | IN UINT8 MaxPacket,\r | |
505 | IN BOOLEAN IsLow\r | |
506 | )\r | |
507 | {\r | |
508 | UHCI_TD_SW *SetupTd;\r | |
509 | UHCI_TD_SW *FirstDataTd;\r | |
510 | UHCI_TD_SW *DataTd;\r | |
511 | UHCI_TD_SW *PrevDataTd;\r | |
512 | UHCI_TD_SW *StatusTd;\r | |
513 | UINT8 DataToggle;\r | |
514 | UINT8 StatusPktId;\r | |
515 | UINTN ThisTdLen;\r | |
516 | \r | |
517 | \r | |
518 | DataTd = NULL;\r | |
519 | SetupTd = NULL;\r | |
520 | FirstDataTd = NULL;\r | |
521 | PrevDataTd = NULL;\r | |
522 | StatusTd = NULL;\r | |
523 | \r | |
524 | //\r | |
525 | // Create setup packets for the transfer\r | |
526 | //\r | |
527 | SetupTd = UhciCreateSetupTd (Uhc, DeviceAddr, Request, IsLow);\r | |
528 | \r | |
529 | if (SetupTd == NULL) {\r | |
530 | return NULL;\r | |
531 | }\r | |
532 | \r | |
533 | //\r | |
534 | // Create data packets for the transfer\r | |
535 | //\r | |
536 | DataToggle = 1;\r | |
537 | \r | |
538 | while (DataLen > 0) {\r | |
539 | //\r | |
540 | // PktSize is the data load size in each Td.\r | |
541 | //\r | |
542 | ThisTdLen = (DataLen > MaxPacket ? MaxPacket : DataLen);\r | |
543 | \r | |
544 | DataTd = UhciCreateDataTd (\r | |
545 | Uhc,\r | |
546 | DeviceAddr,\r | |
547 | 0,\r | |
548 | Data,\r | |
549 | ThisTdLen,\r | |
550 | DataPktId,\r | |
551 | DataToggle,\r | |
552 | IsLow\r | |
553 | );\r | |
554 | \r | |
555 | if (DataTd == NULL) {\r | |
556 | goto FREE_TD;\r | |
557 | }\r | |
558 | \r | |
559 | if (FirstDataTd == NULL) {\r | |
560 | FirstDataTd = DataTd;\r | |
561 | FirstDataTd->NextTd = NULL;\r | |
562 | } else {\r | |
563 | UhciAppendTd (PrevDataTd, DataTd);\r | |
564 | }\r | |
565 | \r | |
566 | DataToggle ^= 1;\r | |
567 | PrevDataTd = DataTd;\r | |
568 | Data += ThisTdLen;\r | |
569 | DataLen -= ThisTdLen;\r | |
570 | }\r | |
571 | \r | |
572 | //\r | |
573 | // Status packet is on the opposite direction to data packets\r | |
574 | //\r | |
575 | if (OUTPUT_PACKET_ID == DataPktId) {\r | |
576 | StatusPktId = INPUT_PACKET_ID;\r | |
577 | } else {\r | |
578 | StatusPktId = OUTPUT_PACKET_ID;\r | |
579 | }\r | |
580 | \r | |
581 | StatusTd = UhciCreateStatusTd (Uhc, DeviceAddr, StatusPktId, IsLow);\r | |
582 | \r | |
583 | if (StatusTd == NULL) {\r | |
584 | goto FREE_TD;\r | |
585 | }\r | |
586 | \r | |
587 | //\r | |
588 | // Link setup Td -> data Tds -> status Td together\r | |
589 | //\r | |
590 | if (FirstDataTd != NULL) {\r | |
591 | UhciAppendTd (SetupTd, FirstDataTd);\r | |
592 | UhciAppendTd (PrevDataTd, StatusTd);\r | |
593 | } else {\r | |
594 | UhciAppendTd (SetupTd, StatusTd);\r | |
595 | }\r | |
596 | \r | |
597 | return SetupTd;\r | |
598 | \r | |
599 | FREE_TD:\r | |
600 | if (SetupTd != NULL) {\r | |
601 | UhciDestoryTds (Uhc, SetupTd);\r | |
602 | }\r | |
603 | \r | |
604 | if (FirstDataTd != NULL) {\r | |
605 | UhciDestoryTds (Uhc, FirstDataTd);\r | |
606 | }\r | |
607 | \r | |
608 | return NULL;\r | |
609 | }\r | |
610 | \r | |
611 | \r | |
612 | /**\r | |
613 | Create Tds list for Bulk/Interrupt Transfer\r | |
614 | \r | |
615 | @param Uhc USB_HC_DEV\r | |
616 | @param DevAddr Address of Device\r | |
617 | @param EndPoint Endpoint Number\r | |
618 | @param PktId Packet Identification of Data Tds\r | |
619 | @param Data A pointer to user data buffer to transfer\r | |
620 | @param DataLen Length of user data to transfer\r | |
621 | @param DataToggle Data Toggle Pointer\r | |
622 | @param MaxPacket Maximum packet size for Bulk/Interrupt transfer\r | |
623 | @param IsLow Is Low Speed Device\r | |
624 | \r | |
625 | @return The Tds list head for the bulk transfer\r | |
626 | \r | |
627 | **/\r | |
628 | UHCI_TD_SW *\r | |
629 | UhciCreateBulkOrIntTds (\r | |
630 | IN USB_HC_DEV *Uhc,\r | |
631 | IN UINT8 DevAddr,\r | |
632 | IN UINT8 EndPoint,\r | |
633 | IN UINT8 PktId,\r | |
634 | IN UINT8 *Data,\r | |
635 | IN UINTN DataLen,\r | |
636 | IN OUT UINT8 *DataToggle,\r | |
637 | IN UINT8 MaxPacket,\r | |
638 | IN BOOLEAN IsLow\r | |
639 | )\r | |
640 | {\r | |
641 | UHCI_TD_SW *DataTd;\r | |
642 | UHCI_TD_SW *FirstDataTd;\r | |
643 | UHCI_TD_SW *PrevDataTd;\r | |
644 | UINTN ThisTdLen;\r | |
645 | \r | |
646 | DataTd = NULL;\r | |
647 | FirstDataTd = NULL;\r | |
648 | PrevDataTd = NULL;\r | |
649 | \r | |
650 | //\r | |
651 | // Create data packets for the transfer\r | |
652 | //\r | |
653 | while (DataLen > 0) {\r | |
654 | //\r | |
655 | // PktSize is the data load size that each Td.\r | |
656 | //\r | |
657 | ThisTdLen = DataLen;\r | |
658 | \r | |
659 | if (DataLen > MaxPacket) {\r | |
660 | ThisTdLen = MaxPacket;\r | |
661 | }\r | |
662 | \r | |
663 | DataTd = UhciCreateDataTd (\r | |
664 | Uhc,\r | |
665 | DevAddr,\r | |
666 | EndPoint,\r | |
667 | Data,\r | |
668 | ThisTdLen,\r | |
669 | PktId,\r | |
670 | *DataToggle,\r | |
671 | IsLow\r | |
672 | );\r | |
673 | \r | |
674 | if (DataTd == NULL) {\r | |
675 | goto FREE_TD;\r | |
676 | }\r | |
677 | \r | |
678 | if (PktId == INPUT_PACKET_ID) {\r | |
679 | DataTd->TdHw.ShortPacket = TRUE;\r | |
680 | }\r | |
681 | \r | |
682 | if (FirstDataTd == NULL) {\r | |
683 | FirstDataTd = DataTd;\r | |
684 | FirstDataTd->NextTd = NULL;\r | |
685 | } else {\r | |
686 | UhciAppendTd (PrevDataTd, DataTd);\r | |
687 | }\r | |
688 | \r | |
689 | *DataToggle ^= 1;\r | |
690 | PrevDataTd = DataTd;\r | |
691 | Data += ThisTdLen;\r | |
692 | DataLen -= ThisTdLen;\r | |
693 | }\r | |
694 | \r | |
695 | return FirstDataTd;\r | |
696 | \r | |
697 | FREE_TD:\r | |
698 | if (FirstDataTd != NULL) {\r | |
699 | UhciDestoryTds (Uhc, FirstDataTd);\r | |
700 | }\r | |
701 | \r | |
702 | return NULL;\r | |
703 | }\r |