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913cb9dc | 1 | /** @file\r |
2 | \r | |
78c2ffb5 | 3 | EHCI transfer scheduling routines.\r |
4 | \r | |
1ccdbf2a | 5 | Copyright (c) 2007 - 2010, Intel Corporation\r |
913cb9dc | 6 | All rights reserved. This program and the accompanying materials\r |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
913cb9dc | 14 | **/\r |
15 | \r | |
16 | #include "Ehci.h"\r | |
17 | \r | |
18 | \r | |
19 | /**\r | |
78c2ffb5 | 20 | Create helper QTD/QH for the EHCI device.\r |
913cb9dc | 21 | \r |
78c2ffb5 | 22 | @param Ehc The EHCI device.\r |
913cb9dc | 23 | \r |
78c2ffb5 | 24 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource for helper QTD/QH.\r |
25 | @retval EFI_SUCCESS Helper QH/QTD are created.\r | |
913cb9dc | 26 | \r |
27 | **/\r | |
913cb9dc | 28 | EFI_STATUS\r |
29 | EhcCreateHelpQ (\r | |
30 | IN USB2_HC_DEV *Ehc\r | |
31 | )\r | |
32 | {\r | |
33 | USB_ENDPOINT Ep;\r | |
34 | EHC_QH *Qh;\r | |
35 | QH_HW *QhHw;\r | |
36 | EHC_QTD *Qtd;\r | |
739802e4 | 37 | EFI_PHYSICAL_ADDRESS PciAddr;\r |
913cb9dc | 38 | \r |
39 | //\r | |
40 | // Create an inactive Qtd to terminate the short packet read.\r | |
41 | //\r | |
739802e4 | 42 | Qtd = EhcCreateQtd (Ehc, NULL, NULL, 0, QTD_PID_INPUT, 0, 64);\r |
913cb9dc | 43 | \r |
44 | if (Qtd == NULL) {\r | |
45 | return EFI_OUT_OF_RESOURCES;\r | |
46 | }\r | |
47 | \r | |
48 | Qtd->QtdHw.Status = QTD_STAT_HALTED;\r | |
49 | Ehc->ShortReadStop = Qtd;\r | |
50 | \r | |
51 | //\r | |
52 | // Create a QH to act as the EHC reclamation header.\r | |
53 | // Set the header to loopback to itself.\r | |
54 | //\r | |
55 | Ep.DevAddr = 0;\r | |
56 | Ep.EpAddr = 1;\r | |
57 | Ep.Direction = EfiUsbDataIn;\r | |
58 | Ep.DevSpeed = EFI_USB_SPEED_HIGH;\r | |
59 | Ep.MaxPacket = 64;\r | |
60 | Ep.HubAddr = 0;\r | |
61 | Ep.HubPort = 0;\r | |
62 | Ep.Toggle = 0;\r | |
63 | Ep.Type = EHC_BULK_TRANSFER;\r | |
64 | Ep.PollRate = 1;\r | |
65 | \r | |
66 | Qh = EhcCreateQh (Ehc, &Ep);\r | |
67 | \r | |
68 | if (Qh == NULL) {\r | |
69 | return EFI_OUT_OF_RESOURCES;\r | |
70 | }\r | |
71 | \r | |
739802e4 | 72 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Qh, sizeof (EHC_QH));\r |
913cb9dc | 73 | QhHw = &Qh->QhHw;\r |
739802e4 | 74 | QhHw->HorizonLink = QH_LINK (PciAddr + OFFSET_OF(EHC_QH, QhHw), EHC_TYPE_QH, FALSE);\r |
913cb9dc | 75 | QhHw->Status = QTD_STAT_HALTED;\r |
76 | QhHw->ReclaimHead = 1;\r | |
77 | Ehc->ReclaimHead = Qh;\r | |
78 | \r | |
79 | //\r | |
80 | // Create a dummy QH to act as the terminator for periodical schedule\r | |
81 | //\r | |
82 | Ep.EpAddr = 2;\r | |
83 | Ep.Type = EHC_INT_TRANSFER_SYNC;\r | |
84 | \r | |
85 | Qh = EhcCreateQh (Ehc, &Ep);\r | |
86 | \r | |
87 | if (Qh == NULL) {\r | |
88 | return EFI_OUT_OF_RESOURCES;\r | |
89 | }\r | |
90 | \r | |
91 | Qh->QhHw.Status = QTD_STAT_HALTED;\r | |
92 | Ehc->PeriodOne = Qh;\r | |
93 | \r | |
94 | return EFI_SUCCESS;\r | |
95 | }\r | |
96 | \r | |
97 | \r | |
913cb9dc | 98 | /**\r |
78c2ffb5 | 99 | Initialize the schedule data structure such as frame list.\r |
913cb9dc | 100 | \r |
78c2ffb5 | 101 | @param Ehc The EHCI device to init schedule data.\r |
913cb9dc | 102 | \r |
78c2ffb5 | 103 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to init schedule data.\r |
104 | @retval EFI_SUCCESS The schedule data is initialized.\r | |
913cb9dc | 105 | \r |
106 | **/\r | |
107 | EFI_STATUS\r | |
108 | EhcInitSched (\r | |
109 | IN USB2_HC_DEV *Ehc\r | |
110 | )\r | |
111 | {\r | |
112 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
113 | VOID *Buf;\r | |
114 | EFI_PHYSICAL_ADDRESS PhyAddr;\r | |
115 | VOID *Map;\r | |
116 | UINTN Pages;\r | |
117 | UINTN Bytes;\r | |
118 | UINTN Index;\r | |
913cb9dc | 119 | EFI_STATUS Status;\r |
739802e4 | 120 | EFI_PHYSICAL_ADDRESS PciAddr;\r |
913cb9dc | 121 | \r |
122 | //\r | |
123 | // First initialize the periodical schedule data:\r | |
124 | // 1. Allocate and map the memory for the frame list\r | |
125 | // 2. Create the help QTD/QH\r | |
126 | // 3. Initialize the frame entries\r | |
127 | // 4. Set the frame list register\r | |
128 | //\r | |
129 | PciIo = Ehc->PciIo;\r | |
130 | \r | |
131 | Bytes = 4096;\r | |
132 | Pages = EFI_SIZE_TO_PAGES (Bytes);\r | |
133 | \r | |
134 | Status = PciIo->AllocateBuffer (\r | |
135 | PciIo,\r | |
136 | AllocateAnyPages,\r | |
137 | EfiBootServicesData,\r | |
138 | Pages,\r | |
139 | &Buf,\r | |
140 | 0\r | |
141 | );\r | |
142 | \r | |
143 | if (EFI_ERROR (Status)) {\r | |
144 | return EFI_OUT_OF_RESOURCES;\r | |
145 | }\r | |
146 | \r | |
147 | Status = PciIo->Map (\r | |
148 | PciIo,\r | |
149 | EfiPciIoOperationBusMasterCommonBuffer,\r | |
150 | Buf,\r | |
151 | &Bytes,\r | |
152 | &PhyAddr,\r | |
153 | &Map\r | |
154 | );\r | |
155 | \r | |
156 | if (EFI_ERROR (Status) || (Bytes != 4096)) {\r | |
157 | PciIo->FreeBuffer (PciIo, Pages, Buf);\r | |
158 | return EFI_OUT_OF_RESOURCES;\r | |
159 | }\r | |
160 | \r | |
592b87a4 | 161 | Ehc->PeriodFrame = Buf;\r |
913cb9dc | 162 | Ehc->PeriodFrameMap = Map;\r |
592b87a4 | 163 | \r |
164 | //\r | |
165 | // Program the FRAMELISTBASE register with the low 32 bit addr\r | |
166 | //\r | |
167 | EhcWriteOpReg (Ehc, EHC_FRAME_BASE_OFFSET, EHC_LOW_32BIT (PhyAddr));\r | |
168 | //\r | |
169 | // Program the CTRLDSSEGMENT register with the high 32 bit addr\r | |
170 | //\r | |
171 | EhcWriteOpReg (Ehc, EHC_CTRLDSSEG_OFFSET, EHC_HIGH_32BIT (PhyAddr));\r | |
913cb9dc | 172 | \r |
173 | //\r | |
174 | // Init memory pool management then create the helper\r | |
175 | // QTD/QH. If failed, previously allocated resources\r | |
176 | // will be freed by EhcFreeSched\r | |
177 | //\r | |
178 | Ehc->MemPool = UsbHcInitMemPool (\r | |
179 | PciIo,\r | |
180 | EHC_BIT_IS_SET (Ehc->HcCapParams, HCCP_64BIT),\r | |
592b87a4 | 181 | EHC_HIGH_32BIT (PhyAddr)\r |
913cb9dc | 182 | );\r |
183 | \r | |
184 | if (Ehc->MemPool == NULL) {\r | |
60cf9cfc | 185 | Status = EFI_OUT_OF_RESOURCES;\r |
186 | goto ErrorExit1;\r | |
913cb9dc | 187 | }\r |
188 | \r | |
189 | Status = EhcCreateHelpQ (Ehc);\r | |
190 | \r | |
191 | if (EFI_ERROR (Status)) {\r | |
592b87a4 | 192 | goto ErrorExit;\r |
913cb9dc | 193 | }\r |
194 | \r | |
195 | //\r | |
196 | // Initialize the frame list entries then set the registers\r | |
197 | //\r | |
592b87a4 | 198 | Ehc->PeriodFrameHost = AllocateZeroPool (EHC_FRAME_LEN * sizeof (UINTN));\r |
199 | if (Ehc->PeriodFrameHost == NULL) {\r | |
200 | Status = EFI_OUT_OF_RESOURCES;\r | |
201 | goto ErrorExit;\r | |
202 | }\r | |
203 | \r | |
204 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Ehc->PeriodOne, sizeof (EHC_QH));\r | |
913cb9dc | 205 | \r |
206 | for (Index = 0; Index < EHC_FRAME_LEN; Index++) {\r | |
592b87a4 | 207 | //\r |
208 | // Store the pci bus address of the QH in period frame list which will be accessed by pci bus master.\r | |
209 | //\r | |
210 | ((UINT32 *)(Ehc->PeriodFrame))[Index] = QH_LINK (PciAddr, EHC_TYPE_QH, FALSE);\r | |
211 | //\r | |
212 | // Store the host address of the QH in period frame list which will be accessed by host.\r | |
213 | //\r | |
214 | ((UINTN *)(Ehc->PeriodFrameHost))[Index] = (UINTN)Ehc->PeriodOne;\r | |
913cb9dc | 215 | }\r |
216 | \r | |
913cb9dc | 217 | //\r |
218 | // Second initialize the asynchronous schedule:\r | |
219 | // Only need to set the AsynListAddr register to\r | |
220 | // the reclamation header\r | |
221 | //\r | |
739802e4 | 222 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Ehc->ReclaimHead, sizeof (EHC_QH));\r |
223 | EhcWriteOpReg (Ehc, EHC_ASYNC_HEAD_OFFSET, EHC_LOW_32BIT (PciAddr));\r | |
913cb9dc | 224 | return EFI_SUCCESS;\r |
592b87a4 | 225 | \r |
226 | ErrorExit:\r | |
592b87a4 | 227 | if (Ehc->PeriodOne != NULL) {\r |
228 | UsbHcFreeMem (Ehc->MemPool, Ehc->PeriodOne, sizeof (EHC_QH));\r | |
229 | Ehc->PeriodOne = NULL;\r | |
230 | }\r | |
231 | \r | |
232 | if (Ehc->ReclaimHead != NULL) {\r | |
233 | UsbHcFreeMem (Ehc->MemPool, Ehc->ReclaimHead, sizeof (EHC_QH));\r | |
234 | Ehc->ReclaimHead = NULL;\r | |
235 | }\r | |
236 | \r | |
237 | if (Ehc->ShortReadStop != NULL) {\r | |
238 | UsbHcFreeMem (Ehc->MemPool, Ehc->ShortReadStop, sizeof (EHC_QTD));\r | |
239 | Ehc->ShortReadStop = NULL;\r | |
240 | }\r | |
60cf9cfc | 241 | \r |
242 | ErrorExit1:\r | |
243 | PciIo->FreeBuffer (PciIo, Pages, Buf);\r | |
244 | PciIo->Unmap (PciIo, Map);\r | |
245 | \r | |
592b87a4 | 246 | return Status;\r |
913cb9dc | 247 | }\r |
248 | \r | |
249 | \r | |
913cb9dc | 250 | /**\r |
251 | Free the schedule data. It may be partially initialized.\r | |
252 | \r | |
78c2ffb5 | 253 | @param Ehc The EHCI device.\r |
913cb9dc | 254 | \r |
913cb9dc | 255 | **/\r |
256 | VOID\r | |
257 | EhcFreeSched (\r | |
258 | IN USB2_HC_DEV *Ehc\r | |
259 | )\r | |
260 | {\r | |
261 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
262 | \r | |
263 | EhcWriteOpReg (Ehc, EHC_FRAME_BASE_OFFSET, 0);\r | |
264 | EhcWriteOpReg (Ehc, EHC_ASYNC_HEAD_OFFSET, 0);\r | |
265 | \r | |
266 | if (Ehc->PeriodOne != NULL) {\r | |
267 | UsbHcFreeMem (Ehc->MemPool, Ehc->PeriodOne, sizeof (EHC_QH));\r | |
268 | Ehc->PeriodOne = NULL;\r | |
269 | }\r | |
270 | \r | |
271 | if (Ehc->ReclaimHead != NULL) {\r | |
272 | UsbHcFreeMem (Ehc->MemPool, Ehc->ReclaimHead, sizeof (EHC_QH));\r | |
273 | Ehc->ReclaimHead = NULL;\r | |
274 | }\r | |
275 | \r | |
276 | if (Ehc->ShortReadStop != NULL) {\r | |
277 | UsbHcFreeMem (Ehc->MemPool, Ehc->ShortReadStop, sizeof (EHC_QTD));\r | |
278 | Ehc->ShortReadStop = NULL;\r | |
279 | }\r | |
280 | \r | |
281 | if (Ehc->MemPool != NULL) {\r | |
282 | UsbHcFreeMemPool (Ehc->MemPool);\r | |
283 | Ehc->MemPool = NULL;\r | |
284 | }\r | |
285 | \r | |
592b87a4 | 286 | if (Ehc->PeriodFrame != NULL) {\r |
913cb9dc | 287 | PciIo = Ehc->PciIo;\r |
288 | ASSERT (PciIo != NULL);\r | |
289 | \r | |
290 | PciIo->Unmap (PciIo, Ehc->PeriodFrameMap);\r | |
291 | \r | |
292 | PciIo->FreeBuffer (\r | |
293 | PciIo,\r | |
294 | EFI_SIZE_TO_PAGES (EFI_PAGE_SIZE),\r | |
592b87a4 | 295 | Ehc->PeriodFrame\r |
913cb9dc | 296 | );\r |
297 | \r | |
592b87a4 | 298 | Ehc->PeriodFrame = NULL;\r |
299 | }\r | |
300 | \r | |
301 | if (Ehc->PeriodFrameHost != NULL) {\r | |
302 | FreePool (Ehc->PeriodFrameHost);\r | |
739802e4 | 303 | Ehc->PeriodFrameHost = NULL;\r |
913cb9dc | 304 | }\r |
305 | }\r | |
306 | \r | |
307 | \r | |
913cb9dc | 308 | /**\r |
309 | Link the queue head to the asynchronous schedule list.\r | |
310 | UEFI only supports one CTRL/BULK transfer at a time\r | |
311 | due to its interfaces. This simplifies the AsynList\r | |
312 | management: A reclamation header is always linked to\r | |
313 | the AsyncListAddr, the only active QH is appended to it.\r | |
314 | \r | |
78c2ffb5 | 315 | @param Ehc The EHCI device.\r |
316 | @param Qh The queue head to link.\r | |
913cb9dc | 317 | \r |
913cb9dc | 318 | **/\r |
319 | VOID\r | |
320 | EhcLinkQhToAsync (\r | |
321 | IN USB2_HC_DEV *Ehc,\r | |
322 | IN EHC_QH *Qh\r | |
323 | )\r | |
324 | {\r | |
325 | EHC_QH *Head;\r | |
739802e4 | 326 | EFI_PHYSICAL_ADDRESS PciAddr;\r |
913cb9dc | 327 | \r |
328 | //\r | |
329 | // Append the queue head after the reclaim header, then\r | |
330 | // fix the hardware visiable parts (EHCI R1.0 page 72).\r | |
331 | // ReclaimHead is always linked to the EHCI's AsynListAddr.\r | |
332 | //\r | |
333 | Head = Ehc->ReclaimHead;\r | |
334 | \r | |
335 | Qh->NextQh = Head->NextQh;\r | |
336 | Head->NextQh = Qh;\r | |
337 | \r | |
739802e4 | 338 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Head, sizeof (EHC_QH));\r |
592b87a4 | 339 | Qh->QhHw.HorizonLink = QH_LINK (PciAddr, EHC_TYPE_QH, FALSE);\r |
739802e4 | 340 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Qh, sizeof (EHC_QH));\r |
341 | Head->QhHw.HorizonLink = QH_LINK (PciAddr, EHC_TYPE_QH, FALSE);\r | |
913cb9dc | 342 | }\r |
343 | \r | |
344 | \r | |
345 | /**\r | |
346 | Unlink a queue head from the asynchronous schedule list.\r | |
78c2ffb5 | 347 | Need to synchronize with hardware.\r |
913cb9dc | 348 | \r |
78c2ffb5 | 349 | @param Ehc The EHCI device.\r |
350 | @param Qh The queue head to unlink.\r | |
913cb9dc | 351 | \r |
913cb9dc | 352 | **/\r |
353 | VOID\r | |
354 | EhcUnlinkQhFromAsync (\r | |
355 | IN USB2_HC_DEV *Ehc,\r | |
356 | IN EHC_QH *Qh\r | |
357 | )\r | |
358 | {\r | |
359 | EHC_QH *Head;\r | |
360 | EFI_STATUS Status;\r | |
739802e4 | 361 | EFI_PHYSICAL_ADDRESS PciAddr;\r |
913cb9dc | 362 | \r |
363 | ASSERT (Ehc->ReclaimHead->NextQh == Qh);\r | |
364 | \r | |
365 | //\r | |
366 | // Remove the QH from reclamation head, then update the hardware\r | |
367 | // visiable part: Only need to loopback the ReclaimHead. The Qh\r | |
368 | // is pointing to ReclaimHead (which is staill in the list).\r | |
369 | //\r | |
370 | Head = Ehc->ReclaimHead;\r | |
371 | \r | |
372 | Head->NextQh = Qh->NextQh;\r | |
373 | Qh->NextQh = NULL;\r | |
374 | \r | |
739802e4 | 375 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Head, sizeof (EHC_QH));\r |
376 | Head->QhHw.HorizonLink = QH_LINK (PciAddr, EHC_TYPE_QH, FALSE);\r | |
913cb9dc | 377 | \r |
378 | //\r | |
379 | // Set and wait the door bell to synchronize with the hardware\r | |
380 | //\r | |
41e8ff27 | 381 | Status = EhcSetAndWaitDoorBell (Ehc, EHC_GENERIC_TIMEOUT);\r |
913cb9dc | 382 | \r |
383 | if (EFI_ERROR (Status)) {\r | |
1c619535 | 384 | DEBUG ((EFI_D_ERROR, "EhcUnlinkQhFromAsync: Failed to synchronize with doorbell\n"));\r |
913cb9dc | 385 | }\r |
386 | }\r | |
387 | \r | |
388 | \r | |
389 | /**\r | |
390 | Link a queue head for interrupt transfer to the periodic\r | |
391 | schedule frame list. This code is very much the same as\r | |
392 | that in UHCI.\r | |
393 | \r | |
78c2ffb5 | 394 | @param Ehc The EHCI device.\r |
395 | @param Qh The queue head to link.\r | |
913cb9dc | 396 | \r |
913cb9dc | 397 | **/\r |
398 | VOID\r | |
399 | EhcLinkQhToPeriod (\r | |
400 | IN USB2_HC_DEV *Ehc,\r | |
401 | IN EHC_QH *Qh\r | |
402 | )\r | |
403 | {\r | |
913cb9dc | 404 | UINTN Index;\r |
405 | EHC_QH *Prev;\r | |
406 | EHC_QH *Next;\r | |
739802e4 | 407 | EFI_PHYSICAL_ADDRESS PciAddr;\r |
913cb9dc | 408 | \r |
913cb9dc | 409 | for (Index = 0; Index < EHC_FRAME_LEN; Index += Qh->Interval) {\r |
410 | //\r | |
411 | // First QH can't be NULL because we always keep PeriodOne\r | |
412 | // heads on the frame list\r | |
413 | //\r | |
592b87a4 | 414 | ASSERT (!EHC_LINK_TERMINATED (((UINT32*)Ehc->PeriodFrame)[Index]));\r |
415 | Next = (EHC_QH*)((UINTN*)Ehc->PeriodFrameHost)[Index];\r | |
913cb9dc | 416 | Prev = NULL;\r |
417 | \r | |
418 | //\r | |
419 | // Now, insert the queue head (Qh) into this frame:\r | |
420 | // 1. Find a queue head with the same poll interval, just insert\r | |
421 | // Qh after this queue head, then we are done.\r | |
422 | //\r | |
423 | // 2. Find the position to insert the queue head into:\r | |
424 | // Previous head's interval is bigger than Qh's\r | |
425 | // Next head's interval is less than Qh's\r | |
426 | // Then, insert the Qh between then\r | |
427 | //\r | |
428 | while (Next->Interval > Qh->Interval) {\r | |
429 | Prev = Next;\r | |
430 | Next = Next->NextQh;\r | |
431 | }\r | |
432 | \r | |
433 | ASSERT (Next != NULL);\r | |
434 | \r | |
435 | //\r | |
436 | // The entry may have been linked into the frame by early insertation.\r | |
437 | // For example: if insert a Qh with Qh.Interval == 4, and there is a Qh\r | |
438 | // with Qh.Interval == 8 on the frame. If so, we are done with this frame.\r | |
439 | // It isn't necessary to compare all the QH with the same interval to\r | |
440 | // Qh. This is because if there is other QH with the same interval, Qh\r | |
441 | // should has been inserted after that at Frames[0] and at Frames[0] it is\r | |
442 | // impossible for (Next == Qh)\r | |
443 | //\r | |
444 | if (Next == Qh) {\r | |
445 | continue;\r | |
446 | }\r | |
447 | \r | |
448 | if (Next->Interval == Qh->Interval) {\r | |
449 | //\r | |
450 | // If there is a QH with the same interval, it locates at\r | |
451 | // Frames[0], and we can simply insert it after this QH. We\r | |
452 | // are all done.\r | |
453 | //\r | |
454 | ASSERT ((Index == 0) && (Qh->NextQh == NULL));\r | |
455 | \r | |
456 | Prev = Next;\r | |
457 | Next = Next->NextQh;\r | |
458 | \r | |
459 | Qh->NextQh = Next;\r | |
460 | Prev->NextQh = Qh;\r | |
461 | \r | |
462 | Qh->QhHw.HorizonLink = Prev->QhHw.HorizonLink;\r | |
739802e4 | 463 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Qh, sizeof (EHC_QH));\r |
464 | Prev->QhHw.HorizonLink = QH_LINK (PciAddr, EHC_TYPE_QH, FALSE);\r | |
913cb9dc | 465 | break;\r |
466 | }\r | |
467 | \r | |
468 | //\r | |
469 | // OK, find the right position, insert it in. If Qh's next\r | |
470 | // link has already been set, it is in position. This is\r | |
471 | // guarranted by 2^n polling interval.\r | |
472 | //\r | |
473 | if (Qh->NextQh == NULL) {\r | |
474 | Qh->NextQh = Next;\r | |
739802e4 | 475 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Next, sizeof (EHC_QH));\r |
476 | Qh->QhHw.HorizonLink = QH_LINK (PciAddr, EHC_TYPE_QH, FALSE);\r | |
913cb9dc | 477 | }\r |
478 | \r | |
739802e4 | 479 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Qh, sizeof (EHC_QH));\r |
480 | \r | |
913cb9dc | 481 | if (Prev == NULL) {\r |
592b87a4 | 482 | ((UINT32*)Ehc->PeriodFrame)[Index] = QH_LINK (PciAddr, EHC_TYPE_QH, FALSE);\r |
483 | ((UINTN*)Ehc->PeriodFrameHost)[Index] = (UINTN)Qh;\r | |
913cb9dc | 484 | } else {\r |
485 | Prev->NextQh = Qh;\r | |
739802e4 | 486 | Prev->QhHw.HorizonLink = QH_LINK (PciAddr, EHC_TYPE_QH, FALSE);\r |
913cb9dc | 487 | }\r |
488 | }\r | |
489 | }\r | |
490 | \r | |
491 | \r | |
492 | /**\r | |
493 | Unlink an interrupt queue head from the periodic\r | |
78c2ffb5 | 494 | schedule frame list.\r |
913cb9dc | 495 | \r |
78c2ffb5 | 496 | @param Ehc The EHCI device.\r |
497 | @param Qh The queue head to unlink.\r | |
913cb9dc | 498 | \r |
913cb9dc | 499 | **/\r |
500 | VOID\r | |
501 | EhcUnlinkQhFromPeriod (\r | |
502 | IN USB2_HC_DEV *Ehc,\r | |
503 | IN EHC_QH *Qh\r | |
504 | )\r | |
505 | {\r | |
913cb9dc | 506 | UINTN Index;\r |
507 | EHC_QH *Prev;\r | |
508 | EHC_QH *This;\r | |
509 | \r | |
913cb9dc | 510 | for (Index = 0; Index < EHC_FRAME_LEN; Index += Qh->Interval) {\r |
511 | //\r | |
512 | // Frame link can't be NULL because we always keep PeroidOne\r | |
513 | // on the frame list\r | |
514 | //\r | |
592b87a4 | 515 | ASSERT (!EHC_LINK_TERMINATED (((UINT32*)Ehc->PeriodFrame)[Index]));\r |
516 | This = (EHC_QH*)((UINTN*)Ehc->PeriodFrameHost)[Index];\r | |
913cb9dc | 517 | Prev = NULL;\r |
518 | \r | |
519 | //\r | |
520 | // Walk through the frame's QH list to find the\r | |
521 | // queue head to remove\r | |
522 | //\r | |
523 | while ((This != NULL) && (This != Qh)) {\r | |
524 | Prev = This;\r | |
525 | This = This->NextQh;\r | |
526 | }\r | |
527 | \r | |
528 | //\r | |
529 | // Qh may have already been unlinked from this frame\r | |
530 | // by early action. See the comments in EhcLinkQhToPeriod.\r | |
531 | //\r | |
532 | if (This == NULL) {\r | |
533 | continue;\r | |
534 | }\r | |
535 | \r | |
536 | if (Prev == NULL) {\r | |
537 | //\r | |
538 | // Qh is the first entry in the frame\r | |
539 | //\r | |
592b87a4 | 540 | ((UINT32*)Ehc->PeriodFrame)[Index] = Qh->QhHw.HorizonLink;\r |
541 | ((UINTN*)Ehc->PeriodFrameHost)[Index] = (UINTN)Qh->NextQh;\r | |
913cb9dc | 542 | } else {\r |
543 | Prev->NextQh = Qh->NextQh;\r | |
544 | Prev->QhHw.HorizonLink = Qh->QhHw.HorizonLink;\r | |
545 | }\r | |
546 | }\r | |
547 | }\r | |
548 | \r | |
549 | \r | |
913cb9dc | 550 | /**\r |
551 | Check the URB's execution result and update the URB's\r | |
552 | result accordingly.\r | |
553 | \r | |
78c2ffb5 | 554 | @param Ehc The EHCI device.\r |
555 | @param Urb The URB to check result.\r | |
913cb9dc | 556 | \r |
557 | @return Whether the result of URB transfer is finialized.\r | |
558 | \r | |
559 | **/\r | |
913cb9dc | 560 | BOOLEAN\r |
561 | EhcCheckUrbResult (\r | |
562 | IN USB2_HC_DEV *Ehc,\r | |
563 | IN URB *Urb\r | |
564 | )\r | |
565 | {\r | |
566 | LIST_ENTRY *Entry;\r | |
567 | EHC_QTD *Qtd;\r | |
568 | QTD_HW *QtdHw;\r | |
569 | UINT8 State;\r | |
570 | BOOLEAN Finished;\r | |
739802e4 | 571 | EFI_PHYSICAL_ADDRESS PciAddr;\r |
913cb9dc | 572 | \r |
573 | ASSERT ((Ehc != NULL) && (Urb != NULL) && (Urb->Qh != NULL));\r | |
574 | \r | |
575 | Finished = TRUE;\r | |
576 | Urb->Completed = 0;\r | |
577 | \r | |
578 | Urb->Result = EFI_USB_NOERROR;\r | |
579 | \r | |
580 | if (EhcIsHalt (Ehc) || EhcIsSysError (Ehc)) {\r | |
581 | Urb->Result |= EFI_USB_ERR_SYSTEM;\r | |
582 | goto ON_EXIT;\r | |
583 | }\r | |
584 | \r | |
585 | EFI_LIST_FOR_EACH (Entry, &Urb->Qh->Qtds) {\r | |
586 | Qtd = EFI_LIST_CONTAINER (Entry, EHC_QTD, QtdList);\r | |
587 | QtdHw = &Qtd->QtdHw;\r | |
588 | State = (UINT8) QtdHw->Status;\r | |
589 | \r | |
590 | if (EHC_BIT_IS_SET (State, QTD_STAT_HALTED)) {\r | |
591 | //\r | |
592 | // EHCI will halt the queue head when met some error.\r | |
593 | // If it is halted, the result of URB is finialized.\r | |
594 | //\r | |
595 | if ((State & QTD_STAT_ERR_MASK) == 0) {\r | |
596 | Urb->Result |= EFI_USB_ERR_STALL;\r | |
597 | }\r | |
598 | \r | |
599 | if (EHC_BIT_IS_SET (State, QTD_STAT_BABBLE_ERR)) {\r | |
600 | Urb->Result |= EFI_USB_ERR_BABBLE;\r | |
601 | }\r | |
602 | \r | |
603 | if (EHC_BIT_IS_SET (State, QTD_STAT_BUFF_ERR)) {\r | |
604 | Urb->Result |= EFI_USB_ERR_BUFFER;\r | |
605 | }\r | |
606 | \r | |
607 | if (EHC_BIT_IS_SET (State, QTD_STAT_TRANS_ERR) && (QtdHw->ErrCnt == 0)) {\r | |
608 | Urb->Result |= EFI_USB_ERR_TIMEOUT;\r | |
609 | }\r | |
610 | \r | |
611 | Finished = TRUE;\r | |
612 | goto ON_EXIT;\r | |
613 | \r | |
614 | } else if (EHC_BIT_IS_SET (State, QTD_STAT_ACTIVE)) {\r | |
615 | //\r | |
616 | // The QTD is still active, no need to check furthur.\r | |
617 | //\r | |
618 | Urb->Result |= EFI_USB_ERR_NOTEXECUTE;\r | |
619 | \r | |
620 | Finished = FALSE;\r | |
621 | goto ON_EXIT;\r | |
622 | \r | |
623 | } else {\r | |
624 | //\r | |
625 | // This QTD is finished OK or met short packet read. Update the\r | |
626 | // transfer length if it isn't a setup.\r | |
627 | //\r | |
628 | if (QtdHw->Pid != QTD_PID_SETUP) {\r | |
629 | Urb->Completed += Qtd->DataLen - QtdHw->TotalBytes;\r | |
630 | }\r | |
631 | \r | |
632 | if ((QtdHw->TotalBytes != 0) && (QtdHw->Pid == QTD_PID_INPUT)) {\r | |
1c619535 | 633 | EhcDumpQh (Urb->Qh, "Short packet read", FALSE);\r |
913cb9dc | 634 | \r |
635 | //\r | |
636 | // Short packet read condition. If it isn't a setup transfer,\r | |
637 | // no need to check furthur: the queue head will halt at the\r | |
638 | // ShortReadStop. If it is a setup transfer, need to check the\r | |
639 | // Status Stage of the setup transfer to get the finial result\r | |
640 | //\r | |
739802e4 | 641 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, Ehc->ShortReadStop, sizeof (EHC_QTD));\r |
642 | if (QtdHw->AltNext == QTD_LINK (PciAddr, FALSE)) {\r | |
1c619535 | 643 | DEBUG ((EFI_D_INFO, "EhcCheckUrbResult: Short packet read, break\n"));\r |
913cb9dc | 644 | \r |
645 | Finished = TRUE;\r | |
646 | goto ON_EXIT;\r | |
647 | }\r | |
648 | \r | |
1c619535 | 649 | DEBUG ((EFI_D_INFO, "EhcCheckUrbResult: Short packet read, continue\n"));\r |
913cb9dc | 650 | }\r |
651 | }\r | |
652 | }\r | |
653 | \r | |
654 | ON_EXIT:\r | |
655 | //\r | |
656 | // Return the data toggle set by EHCI hardware, bulk and interrupt\r | |
657 | // transfer will use this to initialize the next transaction. For\r | |
658 | // Control transfer, it always start a new data toggle sequence for\r | |
659 | // new transfer.\r | |
660 | //\r | |
661 | // NOTICE: don't move DT update before the loop, otherwise there is\r | |
662 | // a race condition that DT is wrong.\r | |
663 | //\r | |
664 | Urb->DataToggle = (UINT8) Urb->Qh->QhHw.DataToggle;\r | |
665 | \r | |
666 | return Finished;\r | |
667 | }\r | |
668 | \r | |
669 | \r | |
670 | /**\r | |
671 | Execute the transfer by polling the URB. This is a synchronous operation.\r | |
672 | \r | |
78c2ffb5 | 673 | @param Ehc The EHCI device.\r |
674 | @param Urb The URB to execute.\r | |
675 | @param TimeOut The time to wait before abort, in millisecond.\r | |
913cb9dc | 676 | \r |
78c2ffb5 | 677 | @return EFI_DEVICE_ERROR The transfer failed due to transfer error.\r |
678 | @return EFI_TIMEOUT The transfer failed due to time out.\r | |
679 | @return EFI_SUCCESS The transfer finished OK.\r | |
913cb9dc | 680 | \r |
681 | **/\r | |
682 | EFI_STATUS\r | |
683 | EhcExecTransfer (\r | |
684 | IN USB2_HC_DEV *Ehc,\r | |
685 | IN URB *Urb,\r | |
686 | IN UINTN TimeOut\r | |
687 | )\r | |
688 | {\r | |
689 | EFI_STATUS Status;\r | |
690 | UINTN Index;\r | |
691 | UINTN Loop;\r | |
692 | BOOLEAN Finished;\r | |
693 | \r | |
694 | Status = EFI_SUCCESS;\r | |
41e8ff27 | 695 | Loop = (TimeOut * EHC_1_MILLISECOND / EHC_SYNC_POLL_INTERVAL) + 1;\r |
913cb9dc | 696 | Finished = FALSE;\r |
697 | \r | |
698 | for (Index = 0; Index < Loop; Index++) {\r | |
699 | Finished = EhcCheckUrbResult (Ehc, Urb);\r | |
700 | \r | |
701 | if (Finished) {\r | |
702 | break;\r | |
703 | }\r | |
704 | \r | |
41e8ff27 | 705 | gBS->Stall (EHC_SYNC_POLL_INTERVAL);\r |
913cb9dc | 706 | }\r |
707 | \r | |
708 | if (!Finished) {\r | |
7df7393f | 709 | DEBUG ((EFI_D_ERROR, "EhcExecTransfer: transfer not finished in %dms\n", (UINT32)TimeOut));\r |
1c619535 | 710 | EhcDumpQh (Urb->Qh, NULL, FALSE);\r |
913cb9dc | 711 | \r |
712 | Status = EFI_TIMEOUT;\r | |
713 | \r | |
714 | } else if (Urb->Result != EFI_USB_NOERROR) {\r | |
1c619535 | 715 | DEBUG ((EFI_D_ERROR, "EhcExecTransfer: transfer failed with %x\n", Urb->Result));\r |
716 | EhcDumpQh (Urb->Qh, NULL, FALSE);\r | |
913cb9dc | 717 | \r |
718 | Status = EFI_DEVICE_ERROR;\r | |
719 | }\r | |
720 | \r | |
721 | return Status;\r | |
722 | }\r | |
723 | \r | |
724 | \r | |
725 | /**\r | |
726 | Delete a single asynchronous interrupt transfer for\r | |
78c2ffb5 | 727 | the device and endpoint.\r |
913cb9dc | 728 | \r |
78c2ffb5 | 729 | @param Ehc The EHCI device.\r |
730 | @param DevAddr The address of the target device.\r | |
731 | @param EpNum The endpoint of the target.\r | |
732 | @param DataToggle Return the next data toggle to use.\r | |
913cb9dc | 733 | \r |
78c2ffb5 | 734 | @retval EFI_SUCCESS An asynchronous transfer is removed.\r |
735 | @retval EFI_NOT_FOUND No transfer for the device is found.\r | |
913cb9dc | 736 | \r |
737 | **/\r | |
738 | EFI_STATUS\r | |
739 | EhciDelAsyncIntTransfer (\r | |
740 | IN USB2_HC_DEV *Ehc,\r | |
741 | IN UINT8 DevAddr,\r | |
742 | IN UINT8 EpNum,\r | |
743 | OUT UINT8 *DataToggle\r | |
744 | )\r | |
745 | {\r | |
746 | LIST_ENTRY *Entry;\r | |
747 | LIST_ENTRY *Next;\r | |
748 | URB *Urb;\r | |
749 | EFI_USB_DATA_DIRECTION Direction;\r | |
750 | \r | |
78c2ffb5 | 751 | Direction = (((EpNum & 0x80) != 0) ? EfiUsbDataIn : EfiUsbDataOut);\r |
913cb9dc | 752 | EpNum &= 0x0F;\r |
753 | \r | |
754 | EFI_LIST_FOR_EACH_SAFE (Entry, Next, &Ehc->AsyncIntTransfers) {\r | |
755 | Urb = EFI_LIST_CONTAINER (Entry, URB, UrbList);\r | |
756 | \r | |
757 | if ((Urb->Ep.DevAddr == DevAddr) && (Urb->Ep.EpAddr == EpNum) &&\r | |
758 | (Urb->Ep.Direction == Direction)) {\r | |
759 | //\r | |
760 | // Check the URB status to retrieve the next data toggle\r | |
761 | // from the associated queue head.\r | |
762 | //\r | |
763 | EhcCheckUrbResult (Ehc, Urb);\r | |
764 | *DataToggle = Urb->DataToggle;\r | |
765 | \r | |
766 | EhcUnlinkQhFromPeriod (Ehc, Urb->Qh);\r | |
767 | RemoveEntryList (&Urb->UrbList);\r | |
768 | \r | |
769 | gBS->FreePool (Urb->Data);\r | |
770 | EhcFreeUrb (Ehc, Urb);\r | |
771 | return EFI_SUCCESS;\r | |
772 | }\r | |
773 | }\r | |
774 | \r | |
775 | return EFI_NOT_FOUND;\r | |
776 | }\r | |
777 | \r | |
778 | \r | |
779 | /**\r | |
78c2ffb5 | 780 | Remove all the asynchronous interrutp transfers.\r |
913cb9dc | 781 | \r |
78c2ffb5 | 782 | @param Ehc The EHCI device.\r |
913cb9dc | 783 | \r |
913cb9dc | 784 | **/\r |
785 | VOID\r | |
786 | EhciDelAllAsyncIntTransfers (\r | |
787 | IN USB2_HC_DEV *Ehc\r | |
788 | )\r | |
789 | {\r | |
790 | LIST_ENTRY *Entry;\r | |
791 | LIST_ENTRY *Next;\r | |
792 | URB *Urb;\r | |
793 | \r | |
794 | EFI_LIST_FOR_EACH_SAFE (Entry, Next, &Ehc->AsyncIntTransfers) {\r | |
795 | Urb = EFI_LIST_CONTAINER (Entry, URB, UrbList);\r | |
796 | \r | |
797 | EhcUnlinkQhFromPeriod (Ehc, Urb->Qh);\r | |
798 | RemoveEntryList (&Urb->UrbList);\r | |
799 | \r | |
800 | gBS->FreePool (Urb->Data);\r | |
801 | EhcFreeUrb (Ehc, Urb);\r | |
802 | }\r | |
803 | }\r | |
804 | \r | |
50fa1b3a | 805 | \r |
78c2ffb5 | 806 | /**\r |
1c619535 | 807 | Flush data from PCI controller specific address to mapped system\r |
50fa1b3a | 808 | memory address.\r |
809 | \r | |
78c2ffb5 | 810 | @param Ehc The EHCI device.\r |
811 | @param Urb The URB to unmap.\r | |
50fa1b3a | 812 | \r |
78c2ffb5 | 813 | @retval EFI_SUCCESS Success to flush data to mapped system memory.\r |
814 | @retval EFI_DEVICE_ERROR Fail to flush data to mapped system memory.\r | |
1c619535 | 815 | \r |
78c2ffb5 | 816 | **/\r |
817 | EFI_STATUS\r | |
818 | EhcFlushAsyncIntMap (\r | |
819 | IN USB2_HC_DEV *Ehc,\r | |
820 | IN URB *Urb\r | |
821 | )\r | |
50fa1b3a | 822 | {\r |
823 | EFI_STATUS Status;\r | |
824 | EFI_PHYSICAL_ADDRESS PhyAddr;\r | |
825 | EFI_PCI_IO_PROTOCOL_OPERATION MapOp;\r | |
826 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
827 | UINTN Len;\r | |
828 | VOID *Map;\r | |
829 | \r | |
830 | PciIo = Ehc->PciIo;\r | |
831 | Len = Urb->DataLen;\r | |
832 | \r | |
833 | if (Urb->Ep.Direction == EfiUsbDataIn) {\r | |
834 | MapOp = EfiPciIoOperationBusMasterWrite;\r | |
835 | } else {\r | |
836 | MapOp = EfiPciIoOperationBusMasterRead;\r | |
837 | }\r | |
1c619535 | 838 | \r |
50fa1b3a | 839 | Status = PciIo->Unmap (PciIo, Urb->DataMap);\r |
840 | if (EFI_ERROR (Status)) {\r | |
841 | goto ON_ERROR;\r | |
842 | }\r | |
843 | \r | |
844 | Urb->DataMap = NULL;\r | |
845 | \r | |
846 | Status = PciIo->Map (PciIo, MapOp, Urb->Data, &Len, &PhyAddr, &Map);\r | |
847 | if (EFI_ERROR (Status) || (Len != Urb->DataLen)) {\r | |
848 | goto ON_ERROR;\r | |
849 | }\r | |
850 | \r | |
851 | Urb->DataPhy = (VOID *) ((UINTN) PhyAddr);\r | |
852 | Urb->DataMap = Map;\r | |
853 | return EFI_SUCCESS;\r | |
854 | \r | |
855 | ON_ERROR:\r | |
856 | return EFI_DEVICE_ERROR;\r | |
857 | }\r | |
858 | \r | |
913cb9dc | 859 | \r |
913cb9dc | 860 | /**\r |
78c2ffb5 | 861 | Update the queue head for next round of asynchronous transfer.\r |
913cb9dc | 862 | \r |
739802e4 | 863 | @param Ehc The EHCI device.\r |
78c2ffb5 | 864 | @param Urb The URB to update.\r |
913cb9dc | 865 | \r |
913cb9dc | 866 | **/\r |
913cb9dc | 867 | VOID\r |
868 | EhcUpdateAsyncRequest (\r | |
739802e4 | 869 | IN USB2_HC_DEV *Ehc,\r |
913cb9dc | 870 | IN URB *Urb\r |
871 | )\r | |
872 | {\r | |
873 | LIST_ENTRY *Entry;\r | |
874 | EHC_QTD *FirstQtd;\r | |
875 | QH_HW *QhHw;\r | |
876 | EHC_QTD *Qtd;\r | |
877 | QTD_HW *QtdHw;\r | |
878 | UINTN Index;\r | |
739802e4 | 879 | EFI_PHYSICAL_ADDRESS PciAddr;\r |
913cb9dc | 880 | \r |
881 | Qtd = NULL;\r | |
882 | \r | |
883 | if (Urb->Result == EFI_USB_NOERROR) {\r | |
884 | FirstQtd = NULL;\r | |
885 | \r | |
886 | EFI_LIST_FOR_EACH (Entry, &Urb->Qh->Qtds) {\r | |
887 | Qtd = EFI_LIST_CONTAINER (Entry, EHC_QTD, QtdList);\r | |
888 | \r | |
889 | if (FirstQtd == NULL) {\r | |
890 | FirstQtd = Qtd;\r | |
891 | }\r | |
892 | \r | |
893 | //\r | |
894 | // Update the QTD for next round of transfer. Host control\r | |
895 | // may change dt/Total Bytes to Transfer/C_Page/Cerr/Status/\r | |
896 | // Current Offset. These fields need to be updated. DT isn't\r | |
897 | // used by interrupt transfer. It uses DT in queue head.\r | |
898 | // Current Offset is in Page[0], only need to reset Page[0]\r | |
899 | // to initial data buffer.\r | |
900 | //\r | |
901 | QtdHw = &Qtd->QtdHw;\r | |
902 | QtdHw->Status = QTD_STAT_ACTIVE;\r | |
903 | QtdHw->ErrCnt = QTD_MAX_ERR;\r | |
904 | QtdHw->CurPage = 0;\r | |
905 | QtdHw->TotalBytes = (UINT32) Qtd->DataLen;\r | |
906 | QtdHw->Page[0] = EHC_LOW_32BIT (Qtd->Data);\r | |
907 | }\r | |
908 | \r | |
909 | //\r | |
910 | // Update QH for next round of transfer. Host control only\r | |
911 | // touch the fields in transfer overlay area. Only need to\r | |
912 | // zero out the overlay area and set NextQtd to the first\r | |
913 | // QTD. DateToggle bit is left untouched.\r | |
914 | //\r | |
915 | QhHw = &Urb->Qh->QhHw;\r | |
916 | QhHw->CurQtd = QTD_LINK (0, TRUE);\r | |
917 | QhHw->AltQtd = 0;\r | |
918 | \r | |
919 | QhHw->Status = 0;\r | |
920 | QhHw->Pid = 0;\r | |
921 | QhHw->ErrCnt = 0;\r | |
922 | QhHw->CurPage = 0;\r | |
1ccdbf2a | 923 | QhHw->Ioc = 0;\r |
913cb9dc | 924 | QhHw->TotalBytes = 0;\r |
925 | \r | |
926 | for (Index = 0; Index < 5; Index++) {\r | |
927 | QhHw->Page[Index] = 0;\r | |
928 | QhHw->PageHigh[Index] = 0;\r | |
929 | }\r | |
930 | \r | |
739802e4 | 931 | PciAddr = UsbHcGetPciAddressForHostMem (Ehc->MemPool, FirstQtd, sizeof (EHC_QTD));\r |
932 | QhHw->NextQtd = QTD_LINK (PciAddr, FALSE);\r | |
913cb9dc | 933 | }\r |
934 | \r | |
935 | return ;\r | |
936 | }\r | |
937 | \r | |
938 | \r | |
939 | /**\r | |
78c2ffb5 | 940 | Interrupt transfer periodic check handler.\r |
913cb9dc | 941 | \r |
78c2ffb5 | 942 | @param Event Interrupt event.\r |
943 | @param Context Pointer to USB2_HC_DEV.\r | |
913cb9dc | 944 | \r |
913cb9dc | 945 | **/\r |
946 | VOID\r | |
6d3ea23f | 947 | EFIAPI\r |
597f4ee2 | 948 | EhcMonitorAsyncRequests (\r |
913cb9dc | 949 | IN EFI_EVENT Event,\r |
950 | IN VOID *Context\r | |
951 | )\r | |
952 | {\r | |
953 | USB2_HC_DEV *Ehc;\r | |
954 | EFI_TPL OldTpl;\r | |
955 | LIST_ENTRY *Entry;\r | |
956 | LIST_ENTRY *Next;\r | |
957 | BOOLEAN Finished;\r | |
958 | UINT8 *ProcBuf;\r | |
959 | URB *Urb;\r | |
50fa1b3a | 960 | EFI_STATUS Status;\r |
913cb9dc | 961 | \r |
962 | OldTpl = gBS->RaiseTPL (EHC_TPL);\r | |
963 | Ehc = (USB2_HC_DEV *) Context;\r | |
964 | \r | |
965 | EFI_LIST_FOR_EACH_SAFE (Entry, Next, &Ehc->AsyncIntTransfers) {\r | |
966 | Urb = EFI_LIST_CONTAINER (Entry, URB, UrbList);\r | |
967 | \r | |
968 | //\r | |
969 | // Check the result of URB execution. If it is still\r | |
970 | // active, check the next one.\r | |
971 | //\r | |
972 | Finished = EhcCheckUrbResult (Ehc, Urb);\r | |
973 | \r | |
974 | if (!Finished) {\r | |
975 | continue;\r | |
976 | }\r | |
977 | \r | |
50fa1b3a | 978 | //\r |
1c619535 | 979 | // Flush any PCI posted write transactions from a PCI host\r |
50fa1b3a | 980 | // bridge to system memory.\r |
981 | //\r | |
982 | Status = EhcFlushAsyncIntMap (Ehc, Urb);\r | |
983 | if (EFI_ERROR (Status)) {\r | |
597f4ee2 | 984 | DEBUG ((EFI_D_ERROR, "EhcMonitorAsyncRequests: Fail to Flush AsyncInt Mapped Memeory\n"));\r |
50fa1b3a | 985 | }\r |
1c619535 | 986 | \r |
913cb9dc | 987 | //\r |
988 | // Allocate a buffer then copy the transferred data for user.\r | |
989 | // If failed to allocate the buffer, update the URB for next\r | |
990 | // round of transfer. Ignore the data of this round.\r | |
991 | //\r | |
992 | ProcBuf = NULL;\r | |
993 | \r | |
994 | if (Urb->Result == EFI_USB_NOERROR) {\r | |
995 | ASSERT (Urb->Completed <= Urb->DataLen);\r | |
996 | \r | |
997 | ProcBuf = AllocatePool (Urb->Completed);\r | |
998 | \r | |
999 | if (ProcBuf == NULL) {\r | |
739802e4 | 1000 | EhcUpdateAsyncRequest (Ehc, Urb);\r |
913cb9dc | 1001 | continue;\r |
1002 | }\r | |
1003 | \r | |
1004 | CopyMem (ProcBuf, Urb->Data, Urb->Completed);\r | |
1005 | }\r | |
1006 | \r | |
739802e4 | 1007 | EhcUpdateAsyncRequest (Ehc, Urb);\r |
913cb9dc | 1008 | \r |
1009 | //\r | |
1010 | // Leave error recovery to its related device driver. A\r | |
1011 | // common case of the error recovery is to re-submit the\r | |
1012 | // interrupt transfer which is linked to the head of the\r | |
1013 | // list. This function scans from head to tail. So the\r | |
1014 | // re-submitted interrupt transfer's callback function\r | |
1015 | // will not be called again in this round. Don't touch this\r | |
1016 | // URB after the callback, it may have been removed by the\r | |
1017 | // callback.\r | |
1018 | //\r | |
1019 | if (Urb->Callback != NULL) {\r | |
1020 | //\r | |
1021 | // Restore the old TPL, USB bus maybe connect device in\r | |
1022 | // his callback. Some drivers may has a lower TPL restriction.\r | |
1023 | //\r | |
1024 | gBS->RestoreTPL (OldTpl);\r | |
1025 | (Urb->Callback) (ProcBuf, Urb->Completed, Urb->Context, Urb->Result);\r | |
1026 | OldTpl = gBS->RaiseTPL (EHC_TPL);\r | |
1027 | }\r | |
1028 | \r | |
1029 | if (ProcBuf != NULL) {\r | |
7351070b | 1030 | FreePool (ProcBuf);\r |
913cb9dc | 1031 | }\r |
1032 | }\r | |
1033 | \r | |
1034 | gBS->RestoreTPL (OldTpl);\r | |
1035 | }\r |