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2cb6eabe EL |
1 | /** @file\r |
2 | Debug Port Library implementation based on usb3 debug port.\r | |
3 | \r | |
75787f65 | 4 | Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>\r |
2cb6eabe EL |
5 | This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php.\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <Base.h>\r | |
16 | #include <PiDxe.h>\r | |
17 | #include <Library/UefiBootServicesTableLib.h>\r | |
75787f65 SZ |
18 | #include <Library/HobLib.h>\r |
19 | #include <Protocol/PciIo.h>\r | |
20 | #include <Protocol/IoMmu.h>\r | |
21 | #include <Protocol/DxeSmmReadyToLock.h>\r | |
2cb6eabe EL |
22 | #include "DebugCommunicationLibUsb3Internal.h"\r |
23 | \r | |
75787f65 SZ |
24 | GUID gUsb3DbgGuid = USB3_DBG_GUID;\r |
25 | \r | |
26 | USB3_DEBUG_PORT_HANDLE mUsb3Instance = {USB3DBG_UNINITIALIZED};\r | |
27 | EFI_PHYSICAL_ADDRESS mUsb3InstanceAddr = 0;\r | |
28 | EFI_PHYSICAL_ADDRESS *mUsb3InstanceAddrPtr = NULL;\r | |
29 | EFI_PCI_IO_PROTOCOL *mUsb3PciIo = NULL;\r | |
30 | \r | |
31 | /**\r | |
32 | Creates a named event that can be signaled.\r | |
33 | \r | |
34 | This function creates an event using NotifyTpl, NoifyFunction.\r | |
35 | If Name is NULL, then ASSERT().\r | |
36 | If NotifyTpl is not a legal TPL value, then ASSERT().\r | |
37 | If NotifyFunction is NULL, then ASSERT().\r | |
38 | \r | |
39 | @param Name Supplies the GUID name of the event.\r | |
40 | @param NotifyTpl Supplies the task priority level of the event notifications.\r | |
41 | @param NotifyFunction Supplies the function to notify when the event is signaled.\r | |
42 | @param Event A pointer to the event created.\r | |
43 | \r | |
44 | @retval EFI_SUCCESS A named event was created.\r | |
45 | @retval EFI_OUT_OF_RESOURCES There are not enough resource to create the named event.\r | |
46 | \r | |
47 | **/\r | |
48 | EFI_STATUS\r | |
49 | EFIAPI\r | |
50 | Usb3NamedEventListen (\r | |
51 | IN CONST EFI_GUID *Name,\r | |
52 | IN EFI_TPL NotifyTpl,\r | |
53 | IN EFI_EVENT_NOTIFY NotifyFunction,\r | |
54 | IN EFI_EVENT *Event\r | |
55 | )\r | |
56 | {\r | |
57 | EFI_STATUS Status;\r | |
58 | VOID *RegistrationLocal;\r | |
59 | \r | |
60 | ASSERT (Name != NULL);\r | |
61 | ASSERT (NotifyFunction != NULL);\r | |
62 | ASSERT (NotifyTpl <= TPL_HIGH_LEVEL);\r | |
63 | \r | |
64 | //\r | |
65 | // Create event\r | |
66 | //\r | |
67 | Status = gBS->CreateEvent (\r | |
68 | EVT_NOTIFY_SIGNAL,\r | |
69 | NotifyTpl,\r | |
70 | NotifyFunction,\r | |
71 | NULL,\r | |
72 | Event\r | |
73 | );\r | |
74 | ASSERT_EFI_ERROR (Status);\r | |
75 | \r | |
76 | //\r | |
77 | // Register for an installation of protocol interface\r | |
78 | //\r | |
79 | Status = gBS->RegisterProtocolNotify (\r | |
80 | (EFI_GUID *) Name,\r | |
81 | *Event,\r | |
82 | &RegistrationLocal\r | |
83 | );\r | |
84 | ASSERT_EFI_ERROR (Status);\r | |
85 | \r | |
86 | return Status;\r | |
87 | }\r | |
88 | \r | |
89 | /**\r | |
90 | USB3 map one DMA buffer.\r | |
91 | \r | |
92 | @param PciIo Pointer to PciIo for USB3 debug port.\r | |
93 | @param Address DMA buffer address to be mapped.\r | |
94 | @param NumberOfBytes Number of bytes to be mapped.\r | |
95 | \r | |
96 | **/\r | |
97 | VOID\r | |
98 | Usb3MapOneDmaBuffer (\r | |
99 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r | |
100 | IN EFI_PHYSICAL_ADDRESS Address,\r | |
101 | IN UINTN NumberOfBytes\r | |
102 | )\r | |
103 | {\r | |
104 | EFI_STATUS Status;\r | |
105 | VOID *HostAddress;\r | |
106 | EFI_PHYSICAL_ADDRESS DeviceAddress;\r | |
107 | VOID *Mapping;\r | |
108 | \r | |
109 | HostAddress = (VOID *) (UINTN) Address;\r | |
110 | Status = PciIo->Map (\r | |
111 | PciIo,\r | |
112 | EfiPciIoOperationBusMasterCommonBuffer,\r | |
113 | HostAddress,\r | |
114 | &NumberOfBytes,\r | |
115 | &DeviceAddress,\r | |
116 | &Mapping\r | |
117 | );\r | |
118 | ASSERT_EFI_ERROR (Status);\r | |
119 | ASSERT (DeviceAddress == ((EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress));\r | |
120 | }\r | |
121 | \r | |
122 | /**\r | |
123 | USB3 map DMA buffers.\r | |
124 | \r | |
125 | @param Instance Pointer to USB3 debug port instance.\r | |
126 | @param PciIo Pointer to PciIo for USB3 debug port.\r | |
127 | \r | |
128 | **/\r | |
129 | VOID\r | |
130 | Usb3MapDmaBuffers (\r | |
131 | IN USB3_DEBUG_PORT_HANDLE *Instance,\r | |
132 | IN EFI_PCI_IO_PROTOCOL *PciIo\r | |
133 | )\r | |
134 | {\r | |
135 | Usb3MapOneDmaBuffer (\r | |
136 | PciIo,\r | |
137 | Instance->UrbIn.Data,\r | |
138 | XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE * 2 + USB3_DEBUG_PORT_WRITE_MAX_PACKET_SIZE\r | |
139 | );\r | |
140 | \r | |
141 | Usb3MapOneDmaBuffer (\r | |
142 | PciIo,\r | |
143 | Instance->TransferRingIn.RingSeg0,\r | |
144 | sizeof (TRB_TEMPLATE) * TR_RING_TRB_NUMBER\r | |
145 | );\r | |
146 | \r | |
147 | Usb3MapOneDmaBuffer (\r | |
148 | PciIo,\r | |
149 | Instance->TransferRingOut.RingSeg0,\r | |
150 | sizeof (TRB_TEMPLATE) * TR_RING_TRB_NUMBER\r | |
151 | );\r | |
152 | \r | |
153 | Usb3MapOneDmaBuffer (\r | |
154 | PciIo,\r | |
155 | Instance->EventRing.EventRingSeg0,\r | |
156 | sizeof (TRB_TEMPLATE) * EVENT_RING_TRB_NUMBER\r | |
157 | );\r | |
158 | \r | |
159 | Usb3MapOneDmaBuffer (\r | |
160 | PciIo,\r | |
161 | Instance->EventRing.ERSTBase,\r | |
162 | sizeof (EVENT_RING_SEG_TABLE_ENTRY) * ERST_NUMBER\r | |
163 | );\r | |
164 | \r | |
165 | Usb3MapOneDmaBuffer (\r | |
166 | PciIo,\r | |
167 | Instance->DebugCapabilityContext,\r | |
168 | sizeof (XHC_DC_CONTEXT)\r | |
169 | );\r | |
170 | \r | |
171 | Usb3MapOneDmaBuffer (\r | |
172 | PciIo,\r | |
173 | ((XHC_DC_CONTEXT *) (UINTN) Instance->DebugCapabilityContext)->DbcInfoContext.String0DescAddress,\r | |
174 | STRING0_DESC_LEN + MANU_DESC_LEN + PRODUCT_DESC_LEN + SERIAL_DESC_LEN\r | |
175 | );\r | |
176 | }\r | |
177 | \r | |
178 | /**\r | |
179 | Invoke a notification event\r | |
180 | \r | |
181 | @param[in] Event Event whose notification function is being invoked.\r | |
182 | @param[in] Context The pointer to the notification function's context,\r | |
183 | which is implementation-dependent.\r | |
184 | \r | |
185 | **/\r | |
186 | VOID\r | |
187 | EFIAPI\r | |
188 | Usb3DxeSmmReadyToLockNotify (\r | |
189 | IN EFI_EVENT Event,\r | |
190 | IN VOID *Context\r | |
191 | )\r | |
192 | {\r | |
193 | USB3_DEBUG_PORT_HANDLE *Instance;\r | |
194 | \r | |
195 | DEBUG ((DEBUG_INFO, "%a()\n", __FUNCTION__));\r | |
196 | \r | |
197 | Instance = GetUsb3DebugPortInstance ();\r | |
198 | ASSERT (Instance != NULL);\r | |
199 | \r | |
200 | Instance->InNotify = TRUE;\r | |
201 | \r | |
202 | //\r | |
203 | // For the case that the USB3 debug port instance and DMA buffers are\r | |
204 | // from PEI HOB with IOMMU enabled.\r | |
205 | // Reinitialize USB3 debug port with granted DXE DMA buffer accessible\r | |
206 | // by SMM environment.\r | |
207 | //\r | |
208 | InitializeUsbDebugHardware (Instance);\r | |
209 | \r | |
210 | //\r | |
211 | // Wait some time for host to be ready after re-initialization.\r | |
212 | //\r | |
213 | MicroSecondDelay (1000000);\r | |
214 | \r | |
215 | Instance->InNotify = FALSE;\r | |
216 | gBS->CloseEvent (Event);\r | |
217 | }\r | |
218 | \r | |
219 | /**\r | |
220 | USB3 get IOMMU protocol.\r | |
221 | \r | |
222 | @return Pointer to IOMMU protocol.\r | |
223 | \r | |
224 | **/\r | |
225 | EDKII_IOMMU_PROTOCOL *\r | |
226 | Usb3GetIoMmu (\r | |
227 | VOID\r | |
228 | )\r | |
229 | {\r | |
230 | EFI_STATUS Status;\r | |
231 | EDKII_IOMMU_PROTOCOL *IoMmu;\r | |
232 | \r | |
233 | IoMmu = NULL;\r | |
234 | Status = gBS->LocateProtocol (\r | |
235 | &gEdkiiIoMmuProtocolGuid,\r | |
236 | NULL,\r | |
237 | (VOID **) &IoMmu\r | |
238 | );\r | |
239 | if (!EFI_ERROR (Status) && (IoMmu != NULL)) {\r | |
240 | return IoMmu;\r | |
241 | }\r | |
242 | \r | |
243 | return NULL;\r | |
244 | }\r | |
245 | \r | |
246 | /**\r | |
247 | Invoke a notification event\r | |
248 | \r | |
249 | @param[in] Event Event whose notification function is being invoked.\r | |
250 | @param[in] Context The pointer to the notification function's context,\r | |
251 | which is implementation-dependent.\r | |
252 | \r | |
253 | **/\r | |
254 | VOID\r | |
255 | EFIAPI\r | |
256 | Usb3PciIoNotify (\r | |
257 | IN EFI_EVENT Event,\r | |
258 | IN VOID *Context\r | |
259 | )\r | |
260 | {\r | |
261 | EFI_STATUS Status;\r | |
262 | UINTN PciIoHandleCount;\r | |
263 | EFI_HANDLE *PciIoHandleBuffer;\r | |
264 | UINTN Index;\r | |
265 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
266 | UINTN PciSegment;\r | |
267 | UINTN PciBusNumber;\r | |
268 | UINTN PciDeviceNumber;\r | |
269 | UINTN PciFunctionNumber;\r | |
270 | UINT32 PciAddress;\r | |
271 | USB3_DEBUG_PORT_HANDLE *Instance;\r | |
272 | EFI_EVENT SmmReadyToLockEvent;\r | |
273 | \r | |
274 | Status = gBS->LocateHandleBuffer (\r | |
275 | ByProtocol,\r | |
276 | &gEfiPciIoProtocolGuid,\r | |
277 | NULL,\r | |
278 | &PciIoHandleCount,\r | |
279 | &PciIoHandleBuffer\r | |
280 | );\r | |
281 | if (!EFI_ERROR (Status) &&\r | |
282 | (PciIoHandleBuffer != NULL) &&\r | |
77695f4d | 283 | (PciIoHandleCount != 0)) {\r |
75787f65 SZ |
284 | for (Index = 0; Index < PciIoHandleCount; Index++) {\r |
285 | Status = gBS->HandleProtocol (\r | |
286 | PciIoHandleBuffer[Index],\r | |
287 | &gEfiPciIoProtocolGuid,\r | |
288 | (VOID **) &PciIo\r | |
289 | );\r | |
290 | ASSERT_EFI_ERROR (Status);\r | |
291 | Status = PciIo->GetLocation (PciIo, &PciSegment, &PciBusNumber, &PciDeviceNumber, &PciFunctionNumber);\r | |
292 | ASSERT_EFI_ERROR (Status);\r | |
293 | PciAddress = (UINT32) ((PciBusNumber << 20) | (PciDeviceNumber << 15) | (PciFunctionNumber << 12));\r | |
294 | if (PciAddress == PcdGet32(PcdUsbXhciPciAddress)) {\r | |
295 | //\r | |
296 | // Found the PciIo for USB3 debug port.\r | |
297 | //\r | |
298 | DEBUG ((DEBUG_INFO, "%a()\n", __FUNCTION__));\r | |
299 | if (Usb3GetIoMmu () != NULL) {\r | |
300 | Instance = GetUsb3DebugPortInstance ();\r | |
301 | ASSERT (Instance != NULL);\r | |
302 | if (Instance->Ready) {\r | |
303 | Instance->InNotify = TRUE;\r | |
304 | Usb3MapDmaBuffers (Instance, PciIo);\r | |
305 | Instance->InNotify = FALSE;\r | |
306 | \r | |
307 | if (Instance->FromHob) {\r | |
308 | mUsb3PciIo = PciIo;\r | |
309 | Usb3NamedEventListen (\r | |
310 | &gEfiDxeSmmReadyToLockProtocolGuid,\r | |
311 | TPL_NOTIFY,\r | |
312 | Usb3DxeSmmReadyToLockNotify,\r | |
313 | &SmmReadyToLockEvent\r | |
314 | );\r | |
315 | }\r | |
316 | }\r | |
317 | }\r | |
318 | gBS->CloseEvent (Event);\r | |
319 | break;\r | |
320 | }\r | |
321 | }\r | |
322 | \r | |
323 | gBS->FreePool (PciIoHandleBuffer);\r | |
324 | }\r | |
325 | }\r | |
326 | \r | |
327 | /**\r | |
328 | Return USB3 debug instance address pointer.\r | |
329 | \r | |
77695f4d | 330 | **/\r |
75787f65 SZ |
331 | EFI_PHYSICAL_ADDRESS *\r |
332 | GetUsb3DebugPortInstanceAddrPtr (\r | |
333 | VOID\r | |
334 | )\r | |
335 | {\r | |
336 | if (mUsb3InstanceAddrPtr == NULL) {\r | |
337 | //\r | |
338 | // Use the local variables temporarily.\r | |
339 | //\r | |
340 | mUsb3InstanceAddr = (EFI_PHYSICAL_ADDRESS) (UINTN) &mUsb3Instance;\r | |
341 | mUsb3InstanceAddrPtr = &mUsb3InstanceAddr;\r | |
342 | }\r | |
343 | return mUsb3InstanceAddrPtr;\r | |
344 | }\r | |
345 | \r | |
346 | /**\r | |
347 | Allocates pages that are suitable for an OperationBusMasterCommonBuffer or\r | |
348 | OperationBusMasterCommonBuffer64 mapping.\r | |
349 | \r | |
350 | @param PciIo Pointer to PciIo for USB3 debug port.\r | |
351 | @param Pages The number of pages to allocate.\r | |
352 | @param Address A pointer to store the base system memory address of the\r | |
353 | allocated range.\r | |
354 | \r | |
355 | @retval EFI_SUCCESS The requested memory pages were allocated.\r | |
356 | @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are\r | |
357 | MEMORY_WRITE_COMBINE and MEMORY_CACHED.\r | |
358 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r | |
359 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
360 | \r | |
361 | **/\r | |
362 | EFI_STATUS\r | |
363 | Usb3AllocateDmaBuffer (\r | |
364 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r | |
365 | IN UINTN Pages,\r | |
366 | OUT VOID **Address\r | |
367 | )\r | |
368 | {\r | |
369 | EFI_STATUS Status;\r | |
370 | \r | |
371 | *Address = NULL;\r | |
372 | Status = PciIo->AllocateBuffer (\r | |
373 | PciIo,\r | |
374 | AllocateAnyPages,\r | |
375 | EfiRuntimeServicesData,\r | |
376 | Pages,\r | |
377 | Address,\r | |
378 | 0\r | |
379 | );\r | |
380 | if (!EFI_ERROR (Status)) {\r | |
381 | Usb3MapOneDmaBuffer (\r | |
382 | PciIo,\r | |
383 | (EFI_PHYSICAL_ADDRESS) (UINTN) *Address,\r | |
384 | EFI_PAGES_TO_SIZE (Pages)\r | |
385 | );\r | |
386 | }\r | |
387 | return Status;\r | |
388 | }\r | |
389 | \r | |
2cb6eabe EL |
390 | /**\r |
391 | Allocate aligned memory for XHC's usage.\r | |
392 | \r | |
393 | @param BufferSize The size, in bytes, of the Buffer.\r | |
77695f4d | 394 | \r |
2cb6eabe EL |
395 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
396 | \r | |
397 | **/\r | |
398 | VOID*\r | |
399 | AllocateAlignBuffer (\r | |
400 | IN UINTN BufferSize\r | |
401 | )\r | |
402 | {\r | |
95055567 ED |
403 | EFI_PHYSICAL_ADDRESS TmpAddr;\r |
404 | EFI_STATUS Status;\r | |
405 | VOID *Buf;\r | |
77695f4d | 406 | \r |
2cb6eabe | 407 | Buf = NULL;\r |
77695f4d | 408 | \r |
2cb6eabe | 409 | if (gBS != NULL) {\r |
75787f65 SZ |
410 | if (mUsb3PciIo != NULL) {\r |
411 | Usb3AllocateDmaBuffer (\r | |
412 | mUsb3PciIo,\r | |
413 | EFI_SIZE_TO_PAGES (BufferSize),\r | |
414 | &Buf\r | |
415 | );\r | |
416 | } else {\r | |
417 | TmpAddr = 0xFFFFFFFF;\r | |
418 | Status = gBS->AllocatePages (\r | |
419 | AllocateMaxAddress,\r | |
420 | EfiACPIMemoryNVS,\r | |
421 | EFI_SIZE_TO_PAGES (BufferSize),\r | |
422 | &TmpAddr\r | |
423 | );\r | |
424 | if (!EFI_ERROR (Status)) {\r | |
425 | Buf = (VOID *) (UINTN) TmpAddr;\r | |
426 | }\r | |
427 | }\r | |
428 | }\r | |
429 | \r | |
430 | return Buf;\r | |
431 | }\r | |
432 | \r | |
433 | /**\r | |
434 | The constructor function initialize USB3 debug port.\r | |
435 | \r | |
436 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
437 | @param SystemTable A pointer to the EFI System Table.\r | |
438 | \r | |
439 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r | |
440 | \r | |
441 | **/\r | |
442 | EFI_STATUS\r | |
443 | EFIAPI\r | |
444 | DebugCommunicationUsb3DxeConstructor (\r | |
445 | IN EFI_HANDLE ImageHandle,\r | |
446 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
447 | )\r | |
448 | {\r | |
449 | EFI_PHYSICAL_ADDRESS *AddrPtr;\r | |
450 | USB3_DEBUG_PORT_HANDLE *Instance;\r | |
451 | EFI_PHYSICAL_ADDRESS Address;\r | |
452 | EFI_STATUS Status;\r | |
453 | EFI_EVENT Event;\r | |
454 | \r | |
455 | Status = EfiGetSystemConfigurationTable (&gUsb3DbgGuid, (VOID **) &AddrPtr);\r | |
456 | if (EFI_ERROR (Status)) {\r | |
457 | //\r | |
458 | // Instead of using local variables, install system configuration table for\r | |
459 | // the local instance and the buffer to save instance address pointer.\r | |
460 | //\r | |
461 | Address = SIZE_4GB;\r | |
95055567 | 462 | Status = gBS->AllocatePages (\r |
75787f65 SZ |
463 | AllocateMaxAddress,\r |
464 | EfiACPIMemoryNVS,\r | |
465 | EFI_SIZE_TO_PAGES (sizeof (EFI_PHYSICAL_ADDRESS) + sizeof (USB3_DEBUG_PORT_HANDLE)),\r | |
466 | &Address\r | |
467 | );\r | |
468 | if (EFI_ERROR (Status)) {\r | |
469 | return Status;\r | |
470 | }\r | |
471 | \r | |
472 | AddrPtr = (EFI_PHYSICAL_ADDRESS *) (UINTN) Address;\r | |
473 | ZeroMem (AddrPtr, sizeof (EFI_PHYSICAL_ADDRESS) + sizeof (USB3_DEBUG_PORT_HANDLE));\r | |
474 | Instance = (USB3_DEBUG_PORT_HANDLE *) (AddrPtr + 1);\r | |
475 | CopyMem (Instance, &mUsb3Instance, sizeof (USB3_DEBUG_PORT_HANDLE));\r | |
476 | *AddrPtr = (EFI_PHYSICAL_ADDRESS) (UINTN) Instance;\r | |
477 | \r | |
478 | Status = gBS->InstallConfigurationTable (&gUsb3DbgGuid, AddrPtr);\r | |
479 | if (EFI_ERROR (Status)) {\r | |
480 | return Status;\r | |
481 | }\r | |
482 | }\r | |
483 | \r | |
484 | if (mUsb3InstanceAddrPtr != NULL) {\r | |
485 | *AddrPtr = *mUsb3InstanceAddrPtr;\r | |
486 | }\r | |
487 | mUsb3InstanceAddrPtr = AddrPtr;\r | |
488 | \r | |
489 | Instance = GetUsb3DebugPortInstance ();\r | |
490 | ASSERT (Instance != NULL);\r | |
491 | \r | |
492 | if (Instance->PciIoEvent == 0) {\r | |
493 | Status = Usb3NamedEventListen (\r | |
494 | &gEfiPciIoProtocolGuid,\r | |
495 | TPL_NOTIFY,\r | |
496 | Usb3PciIoNotify,\r | |
497 | &Event\r | |
95055567 ED |
498 | );\r |
499 | if (!EFI_ERROR (Status)) {\r | |
75787f65 | 500 | Instance->PciIoEvent = (EFI_PHYSICAL_ADDRESS) (UINTN) Event;\r |
95055567 | 501 | }\r |
2cb6eabe EL |
502 | }\r |
503 | \r | |
75787f65 SZ |
504 | return EFI_SUCCESS;\r |
505 | }\r | |
506 | \r | |
507 | /**\r | |
508 | The destructor function.\r | |
509 | \r | |
510 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
511 | @param SystemTable A pointer to the EFI System Table.\r | |
512 | \r | |
513 | @retval EFI_SUCCESS The destructor always returns EFI_SUCCESS.\r | |
514 | \r | |
515 | **/\r | |
516 | EFI_STATUS\r | |
517 | EFIAPI\r | |
518 | DebugCommunicationUsb3DxeDestructor (\r | |
519 | IN EFI_HANDLE ImageHandle,\r | |
520 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
521 | )\r | |
522 | {\r | |
523 | USB3_DEBUG_PORT_HANDLE *Instance;\r | |
524 | \r | |
525 | Instance = GetUsb3DebugPortInstance ();\r | |
526 | ASSERT (Instance != NULL);\r | |
527 | \r | |
528 | if (Instance->PciIoEvent != 0) {\r | |
529 | //\r | |
530 | // Close the event created.\r | |
531 | //\r | |
532 | gBS->CloseEvent ((EFI_EVENT) (UINTN) Instance->PciIoEvent);\r | |
533 | Instance->PciIoEvent = 0;\r | |
534 | }\r | |
535 | return EFI_SUCCESS;\r | |
2cb6eabe | 536 | }\r |
75787f65 | 537 | \r |