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1 | /** @file\r |
2 | VirtualKeyboard driver\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r | |
5 | Copyright (c) 2018, Linaro Ltd. All rights reserved.<BR>\r | |
6 | \r | |
7 | This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions\r | |
9 | of the BSD License which accompanies this distribution. The\r | |
10 | full text of the license may be found at\r | |
11 | http://opensource.org/licenses/bsd-license.php\r | |
12 | \r | |
13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
15 | \r | |
16 | **/\r | |
17 | \r | |
18 | #include "VirtualKeyboard.h"\r | |
19 | \r | |
20 | //\r | |
21 | // RAM Keyboard Driver Binding Protocol Instance\r | |
22 | //\r | |
23 | EFI_DRIVER_BINDING_PROTOCOL gVirtualKeyboardDriverBinding = {\r | |
24 | VirtualKeyboardDriverBindingSupported,\r | |
25 | VirtualKeyboardDriverBindingStart,\r | |
26 | VirtualKeyboardDriverBindingStop,\r | |
27 | 0x10,\r | |
28 | NULL,\r | |
29 | NULL\r | |
30 | };\r | |
31 | \r | |
32 | //\r | |
33 | // EFI Driver Binding Protocol Functions\r | |
34 | //\r | |
35 | \r | |
36 | /**\r | |
37 | Check whether the driver supports this device.\r | |
38 | \r | |
39 | @param This The Udriver binding protocol.\r | |
40 | @param Controller The controller handle to check.\r | |
41 | @param RemainingDevicePath The remaining device path.\r | |
42 | \r | |
43 | @retval EFI_SUCCESS The driver supports this controller.\r | |
44 | @retval other This device isn't supported.\r | |
45 | \r | |
46 | **/\r | |
47 | EFI_STATUS\r | |
48 | EFIAPI\r | |
49 | VirtualKeyboardDriverBindingSupported (\r | |
50 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
51 | IN EFI_HANDLE Controller,\r | |
52 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
53 | )\r | |
54 | {\r | |
55 | EFI_STATUS Status;\r | |
56 | PLATFORM_VIRTUAL_KBD_PROTOCOL *PlatformVirtual;\r | |
57 | \r | |
58 | Status = gBS->OpenProtocol (\r | |
59 | Controller,\r | |
60 | &gPlatformVirtualKeyboardProtocolGuid,\r | |
61 | (VOID **) &PlatformVirtual,\r | |
62 | This->DriverBindingHandle,\r | |
63 | Controller,\r | |
64 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
65 | );\r | |
66 | if (EFI_ERROR (Status)) {\r | |
67 | return Status;\r | |
68 | }\r | |
69 | gBS->CloseProtocol (\r | |
70 | Controller,\r | |
71 | &gPlatformVirtualKeyboardProtocolGuid,\r | |
72 | This->DriverBindingHandle,\r | |
73 | Controller\r | |
74 | );\r | |
75 | return Status;\r | |
76 | }\r | |
77 | \r | |
78 | /**\r | |
79 | Starts the device with this driver.\r | |
80 | \r | |
81 | @param This The driver binding instance.\r | |
82 | @param Controller Handle of device to bind driver to.\r | |
83 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
84 | device to start.\r | |
85 | \r | |
86 | @retval EFI_SUCCESS The controller is controlled by the driver.\r | |
87 | @retval Other This controller cannot be started.\r | |
88 | \r | |
89 | **/\r | |
90 | EFI_STATUS\r | |
91 | EFIAPI\r | |
92 | VirtualKeyboardDriverBindingStart (\r | |
93 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
94 | IN EFI_HANDLE Controller,\r | |
95 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
96 | )\r | |
97 | {\r | |
98 | EFI_STATUS Status;\r | |
99 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
100 | PLATFORM_VIRTUAL_KBD_PROTOCOL *PlatformVirtual;\r | |
101 | \r | |
102 | Status = gBS->OpenProtocol (\r | |
103 | Controller,\r | |
104 | &gPlatformVirtualKeyboardProtocolGuid,\r | |
105 | (VOID **) &PlatformVirtual,\r | |
106 | This->DriverBindingHandle,\r | |
107 | Controller,\r | |
108 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
109 | );\r | |
110 | if (EFI_ERROR (Status)) {\r | |
111 | return Status;\r | |
112 | }\r | |
113 | \r | |
114 | //\r | |
115 | // Allocate the private device structure\r | |
116 | //\r | |
117 | VirtualKeyboardPrivate = (VIRTUAL_KEYBOARD_DEV *) AllocateZeroPool (sizeof (VIRTUAL_KEYBOARD_DEV));\r | |
118 | if (VirtualKeyboardPrivate == NULL) {\r | |
119 | Status = EFI_OUT_OF_RESOURCES;\r | |
120 | goto Done;\r | |
121 | }\r | |
122 | \r | |
123 | //\r | |
124 | // Initialize the private device structure\r | |
125 | //\r | |
126 | VirtualKeyboardPrivate->Signature = VIRTUAL_KEYBOARD_DEV_SIGNATURE;\r | |
127 | VirtualKeyboardPrivate->Handle = Controller;\r | |
128 | VirtualKeyboardPrivate->PlatformVirtual = PlatformVirtual;\r | |
129 | VirtualKeyboardPrivate->Queue.Front = 0;\r | |
130 | VirtualKeyboardPrivate->Queue.Rear = 0;\r | |
131 | VirtualKeyboardPrivate->QueueForNotify.Front = 0;\r | |
132 | VirtualKeyboardPrivate->QueueForNotify.Rear = 0;\r | |
133 | \r | |
134 | VirtualKeyboardPrivate->SimpleTextIn.Reset = VirtualKeyboardReset;\r | |
135 | VirtualKeyboardPrivate->SimpleTextIn.ReadKeyStroke = VirtualKeyboardReadKeyStroke;\r | |
136 | \r | |
137 | VirtualKeyboardPrivate->SimpleTextInputEx.Reset = VirtualKeyboardResetEx;\r | |
138 | VirtualKeyboardPrivate->SimpleTextInputEx.ReadKeyStrokeEx = VirtualKeyboardReadKeyStrokeEx;\r | |
139 | VirtualKeyboardPrivate->SimpleTextInputEx.SetState = VirtualKeyboardSetState;\r | |
140 | \r | |
141 | VirtualKeyboardPrivate->SimpleTextInputEx.RegisterKeyNotify = VirtualKeyboardRegisterKeyNotify;\r | |
142 | VirtualKeyboardPrivate->SimpleTextInputEx.UnregisterKeyNotify = VirtualKeyboardUnregisterKeyNotify;\r | |
143 | InitializeListHead (&VirtualKeyboardPrivate->NotifyList);\r | |
144 | \r | |
145 | Status = PlatformVirtual->Register ();\r | |
146 | if (EFI_ERROR (Status)) {\r | |
147 | goto Done;\r | |
148 | }\r | |
149 | \r | |
150 | //\r | |
151 | // Report that the keyboard is being enabled\r | |
152 | //\r | |
153 | REPORT_STATUS_CODE (\r | |
154 | EFI_PROGRESS_CODE,\r | |
155 | EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_ENABLE\r | |
156 | );\r | |
157 | \r | |
158 | //\r | |
159 | // Setup the WaitForKey event\r | |
160 | //\r | |
161 | Status = gBS->CreateEvent (\r | |
162 | EVT_NOTIFY_WAIT,\r | |
163 | TPL_NOTIFY,\r | |
164 | VirtualKeyboardWaitForKey,\r | |
165 | &(VirtualKeyboardPrivate->SimpleTextIn),\r | |
166 | &((VirtualKeyboardPrivate->SimpleTextIn).WaitForKey)\r | |
167 | );\r | |
168 | if (EFI_ERROR (Status)) {\r | |
169 | (VirtualKeyboardPrivate->SimpleTextIn).WaitForKey = NULL;\r | |
170 | goto Done;\r | |
171 | }\r | |
172 | Status = gBS->CreateEvent (\r | |
173 | EVT_NOTIFY_WAIT,\r | |
174 | TPL_NOTIFY,\r | |
175 | VirtualKeyboardWaitForKeyEx,\r | |
176 | &(VirtualKeyboardPrivate->SimpleTextInputEx),\r | |
177 | &(VirtualKeyboardPrivate->SimpleTextInputEx.WaitForKeyEx)\r | |
178 | );\r | |
179 | if (EFI_ERROR (Status)) {\r | |
180 | VirtualKeyboardPrivate->SimpleTextInputEx.WaitForKeyEx = NULL;\r | |
181 | goto Done;\r | |
182 | }\r | |
183 | \r | |
184 | //\r | |
185 | // Setup a periodic timer, used for reading keystrokes at a fixed interval\r | |
186 | //\r | |
187 | Status = gBS->CreateEvent (\r | |
188 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
189 | TPL_NOTIFY,\r | |
190 | VirtualKeyboardTimerHandler,\r | |
191 | VirtualKeyboardPrivate,\r | |
192 | &VirtualKeyboardPrivate->TimerEvent\r | |
193 | );\r | |
194 | if (EFI_ERROR (Status)) {\r | |
195 | Status = EFI_OUT_OF_RESOURCES;\r | |
196 | goto Done;\r | |
197 | }\r | |
198 | \r | |
199 | Status = gBS->SetTimer (\r | |
200 | VirtualKeyboardPrivate->TimerEvent,\r | |
201 | TimerPeriodic,\r | |
202 | KEYBOARD_TIMER_INTERVAL\r | |
203 | );\r | |
204 | if (EFI_ERROR (Status)) {\r | |
205 | Status = EFI_OUT_OF_RESOURCES;\r | |
206 | goto Done;\r | |
207 | }\r | |
208 | \r | |
209 | Status = gBS->CreateEvent (\r | |
210 | EVT_NOTIFY_SIGNAL,\r | |
211 | TPL_CALLBACK,\r | |
212 | KeyNotifyProcessHandler,\r | |
213 | VirtualKeyboardPrivate,\r | |
214 | &VirtualKeyboardPrivate->KeyNotifyProcessEvent\r | |
215 | );\r | |
216 | if (EFI_ERROR (Status)) {\r | |
217 | Status = EFI_OUT_OF_RESOURCES;\r | |
218 | goto Done;\r | |
219 | }\r | |
220 | \r | |
221 | //\r | |
222 | // Reset the keyboard device\r | |
223 | //\r | |
224 | Status = VirtualKeyboardPrivate->SimpleTextInputEx.Reset (\r | |
225 | &VirtualKeyboardPrivate->SimpleTextInputEx,\r | |
226 | FALSE\r | |
227 | );\r | |
228 | if (EFI_ERROR (Status)) {\r | |
229 | DEBUG ((DEBUG_ERROR, "[KBD]Reset Failed. Status - %r\n", Status));\r | |
230 | goto Done;\r | |
231 | }\r | |
232 | //\r | |
233 | // Install protocol interfaces for the keyboard device.\r | |
234 | //\r | |
235 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
236 | &Controller,\r | |
237 | &gEfiSimpleTextInProtocolGuid,\r | |
238 | &VirtualKeyboardPrivate->SimpleTextIn,\r | |
239 | &gEfiSimpleTextInputExProtocolGuid,\r | |
240 | &VirtualKeyboardPrivate->SimpleTextInputEx,\r | |
241 | NULL\r | |
242 | );\r | |
243 | \r | |
244 | Done:\r | |
245 | if (EFI_ERROR (Status)) {\r | |
246 | if (VirtualKeyboardPrivate != NULL) {\r | |
247 | if ((VirtualKeyboardPrivate->SimpleTextIn).WaitForKey != NULL) {\r | |
248 | gBS->CloseEvent ((VirtualKeyboardPrivate->SimpleTextIn).WaitForKey);\r | |
249 | }\r | |
250 | \r | |
251 | if ((VirtualKeyboardPrivate->SimpleTextInputEx).WaitForKeyEx != NULL) {\r | |
252 | gBS->CloseEvent (\r | |
253 | (VirtualKeyboardPrivate->SimpleTextInputEx).WaitForKeyEx\r | |
254 | );\r | |
255 | }\r | |
256 | \r | |
257 | if (VirtualKeyboardPrivate->KeyNotifyProcessEvent != NULL) {\r | |
258 | gBS->CloseEvent (VirtualKeyboardPrivate->KeyNotifyProcessEvent);\r | |
259 | }\r | |
260 | \r | |
261 | VirtualKeyboardFreeNotifyList (&VirtualKeyboardPrivate->NotifyList);\r | |
262 | \r | |
263 | if (VirtualKeyboardPrivate->TimerEvent != NULL) {\r | |
264 | gBS->CloseEvent (VirtualKeyboardPrivate->TimerEvent);\r | |
265 | }\r | |
266 | FreePool (VirtualKeyboardPrivate);\r | |
267 | }\r | |
268 | }\r | |
269 | \r | |
270 | gBS->CloseProtocol (\r | |
271 | Controller,\r | |
272 | &gPlatformVirtualKeyboardProtocolGuid,\r | |
273 | This->DriverBindingHandle,\r | |
274 | Controller\r | |
275 | );\r | |
276 | \r | |
277 | return Status;\r | |
278 | }\r | |
279 | \r | |
280 | /**\r | |
281 | Stop the device handled by this driver.\r | |
282 | \r | |
283 | @param This The driver binding protocol.\r | |
284 | @param Controller The controller to release.\r | |
285 | @param NumberOfChildren The number of handles in ChildHandleBuffer.\r | |
286 | @param ChildHandleBuffer The array of child handle.\r | |
287 | \r | |
288 | @retval EFI_SUCCESS The device was stopped.\r | |
289 | @retval EFI_DEVICE_ERROR The device could not be stopped due to a\r | |
290 | device error.\r | |
291 | @retval Others Fail to uninstall protocols attached on the\r | |
292 | device.\r | |
293 | \r | |
294 | **/\r | |
295 | EFI_STATUS\r | |
296 | EFIAPI\r | |
297 | VirtualKeyboardDriverBindingStop (\r | |
298 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
299 | IN EFI_HANDLE Controller,\r | |
300 | IN UINTN NumberOfChildren,\r | |
301 | IN EFI_HANDLE *ChildHandleBuffer\r | |
302 | )\r | |
303 | {\r | |
304 | return EFI_SUCCESS;\r | |
305 | }\r | |
306 | \r | |
307 | \r | |
308 | /**\r | |
309 | Enqueue the key.\r | |
310 | \r | |
311 | @param Queue The queue to be enqueued.\r | |
312 | @param KeyData The key data to be enqueued.\r | |
313 | \r | |
314 | @retval EFI_NOT_READY The queue is full.\r | |
315 | @retval EFI_SUCCESS Successfully enqueued the key data.\r | |
316 | \r | |
317 | **/\r | |
318 | EFI_STATUS\r | |
319 | Enqueue (\r | |
320 | IN SIMPLE_QUEUE *Queue,\r | |
321 | IN EFI_KEY_DATA *KeyData\r | |
322 | )\r | |
323 | {\r | |
324 | if ((Queue->Rear + 1) % QUEUE_MAX_COUNT == Queue->Front) {\r | |
325 | return EFI_NOT_READY;\r | |
326 | }\r | |
327 | \r | |
328 | CopyMem (&Queue->Buffer[Queue->Rear], KeyData, sizeof (EFI_KEY_DATA));\r | |
329 | Queue->Rear = (Queue->Rear + 1) % QUEUE_MAX_COUNT;\r | |
330 | \r | |
331 | return EFI_SUCCESS;\r | |
332 | }\r | |
333 | \r | |
334 | /**\r | |
335 | Dequeue the key.\r | |
336 | \r | |
337 | @param Queue The queue to be dequeued.\r | |
338 | @param KeyData The key data to be dequeued.\r | |
339 | \r | |
340 | @retval EFI_NOT_READY The queue is empty.\r | |
341 | @retval EFI_SUCCESS Successfully dequeued the key data.\r | |
342 | \r | |
343 | **/\r | |
344 | EFI_STATUS\r | |
345 | Dequeue (\r | |
346 | IN SIMPLE_QUEUE *Queue,\r | |
347 | IN EFI_KEY_DATA *KeyData\r | |
348 | )\r | |
349 | {\r | |
350 | if (Queue->Front == Queue->Rear) {\r | |
351 | return EFI_NOT_READY;\r | |
352 | }\r | |
353 | \r | |
354 | CopyMem (KeyData, &Queue->Buffer[Queue->Front], sizeof (EFI_KEY_DATA));\r | |
355 | Queue->Front = (Queue->Front + 1) % QUEUE_MAX_COUNT;\r | |
356 | \r | |
357 | return EFI_SUCCESS;\r | |
358 | }\r | |
359 | \r | |
360 | /**\r | |
361 | Check whether the queue is empty.\r | |
362 | \r | |
363 | @param Queue The queue to be checked.\r | |
364 | \r | |
365 | @retval EFI_NOT_READY The queue is empty.\r | |
366 | @retval EFI_SUCCESS The queue is not empty.\r | |
367 | \r | |
368 | **/\r | |
369 | EFI_STATUS\r | |
370 | CheckQueue (\r | |
371 | IN SIMPLE_QUEUE *Queue\r | |
372 | )\r | |
373 | {\r | |
374 | if (Queue->Front == Queue->Rear) {\r | |
375 | return EFI_NOT_READY;\r | |
376 | }\r | |
377 | \r | |
378 | return EFI_SUCCESS;\r | |
379 | }\r | |
380 | \r | |
381 | /**\r | |
382 | Check key buffer to get the key stroke status.\r | |
383 | \r | |
384 | @param This Pointer of the protocol EFI_SIMPLE_TEXT_IN_PROTOCOL.\r | |
385 | \r | |
386 | @retval EFI_SUCCESS A key is being pressed now.\r | |
387 | @retval Other No key is now pressed.\r | |
388 | \r | |
389 | **/\r | |
390 | EFI_STATUS\r | |
391 | EFIAPI\r | |
392 | VirtualKeyboardCheckForKey (\r | |
393 | IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This\r | |
394 | )\r | |
395 | {\r | |
396 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
397 | \r | |
398 | VirtualKeyboardPrivate = VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);\r | |
399 | \r | |
400 | return CheckQueue (&VirtualKeyboardPrivate->Queue);\r | |
401 | }\r | |
402 | \r | |
403 | /**\r | |
404 | Free keyboard notify list.\r | |
405 | \r | |
406 | @param ListHead The list head\r | |
407 | \r | |
408 | @retval EFI_SUCCESS Free the notify list successfully\r | |
409 | @retval EFI_INVALID_PARAMETER ListHead is invalid.\r | |
410 | \r | |
411 | **/\r | |
412 | EFI_STATUS\r | |
413 | VirtualKeyboardFreeNotifyList (\r | |
414 | IN OUT LIST_ENTRY *ListHead\r | |
415 | )\r | |
416 | {\r | |
417 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *NotifyNode;\r | |
418 | \r | |
419 | if (ListHead == NULL) {\r | |
420 | return EFI_INVALID_PARAMETER;\r | |
421 | }\r | |
422 | while (!IsListEmpty (ListHead)) {\r | |
423 | NotifyNode = CR (\r | |
424 | ListHead->ForwardLink,\r | |
425 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,\r | |
426 | NotifyEntry,\r | |
427 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE\r | |
428 | );\r | |
429 | RemoveEntryList (ListHead->ForwardLink);\r | |
430 | gBS->FreePool (NotifyNode);\r | |
431 | }\r | |
432 | \r | |
433 | return EFI_SUCCESS;\r | |
434 | }\r | |
435 | \r | |
436 | /**\r | |
437 | Judge whether is a registed key\r | |
438 | \r | |
439 | @param RegsiteredData A pointer to a buffer that is filled in with\r | |
440 | the keystroke state data for the key that was\r | |
441 | registered.\r | |
442 | @param InputData A pointer to a buffer that is filled in with\r | |
443 | the keystroke state data for the key that was\r | |
444 | pressed.\r | |
445 | \r | |
446 | @retval TRUE Key be pressed matches a registered key.\r | |
447 | @retval FLASE Match failed.\r | |
448 | \r | |
449 | **/\r | |
450 | BOOLEAN\r | |
451 | IsKeyRegistered (\r | |
452 | IN EFI_KEY_DATA *RegsiteredData,\r | |
453 | IN EFI_KEY_DATA *InputData\r | |
454 | )\r | |
455 | \r | |
456 | {\r | |
457 | ASSERT (RegsiteredData != NULL && InputData != NULL);\r | |
458 | \r | |
459 | if ((RegsiteredData->Key.ScanCode != InputData->Key.ScanCode) ||\r | |
460 | (RegsiteredData->Key.UnicodeChar != InputData->Key.UnicodeChar)) {\r | |
461 | return FALSE;\r | |
462 | }\r | |
463 | \r | |
464 | //\r | |
465 | // Assume KeyShiftState/KeyToggleState = 0 in Registered key data means\r | |
466 | // these state could be ignored.\r | |
467 | //\r | |
468 | if ((RegsiteredData->KeyState.KeyShiftState != 0) &&\r | |
469 | (RegsiteredData->KeyState.KeyShiftState != InputData->KeyState.KeyShiftState)) {\r | |
470 | return FALSE;\r | |
471 | }\r | |
472 | if ((RegsiteredData->KeyState.KeyToggleState != 0) &&\r | |
473 | (RegsiteredData->KeyState.KeyToggleState != InputData->KeyState.KeyToggleState)) {\r | |
474 | return FALSE;\r | |
475 | }\r | |
476 | \r | |
477 | return TRUE;\r | |
478 | \r | |
479 | }\r | |
480 | \r | |
481 | /**\r | |
482 | Event notification function for SIMPLE_TEXT_IN.WaitForKey event\r | |
483 | Signal the event if there is key available\r | |
484 | \r | |
485 | @param Event the event object\r | |
486 | @param Context waitting context\r | |
487 | \r | |
488 | **/\r | |
489 | VOID\r | |
490 | EFIAPI\r | |
491 | VirtualKeyboardWaitForKey (\r | |
492 | IN EFI_EVENT Event,\r | |
493 | IN VOID *Context\r | |
494 | )\r | |
495 | {\r | |
496 | //\r | |
497 | // Stall 1ms to give a chance to let other driver interrupt this routine\r | |
498 | // for their timer event.\r | |
499 | // e.g. UI setup or Shell, other drivers which are driven by timer event\r | |
500 | // will have a bad performance during this period,\r | |
501 | // e.g. usb keyboard driver.\r | |
502 | // Add a stall period can greatly increate other driver performance during\r | |
503 | // the WaitForKey is recursivly invoked. 1ms delay will make little impact\r | |
504 | // to the thunk keyboard driver, and user can not feel the delay at all when\r | |
505 | // input.\r | |
506 | //\r | |
507 | gBS->Stall (1000);\r | |
508 | //\r | |
509 | // Use TimerEvent callback function to check whether there's any key pressed\r | |
510 | //\r | |
511 | VirtualKeyboardTimerHandler (NULL, VIRTUAL_KEYBOARD_DEV_FROM_THIS (Context));\r | |
512 | \r | |
513 | if (!EFI_ERROR (VirtualKeyboardCheckForKey (Context))) {\r | |
514 | gBS->SignalEvent (Event);\r | |
515 | }\r | |
516 | }\r | |
517 | \r | |
518 | /**\r | |
519 | Event notification function for SIMPLE_TEXT_INPUT_EX_PROTOCOL.WaitForKeyEx\r | |
520 | event. Signal the event if there is key available\r | |
521 | \r | |
522 | @param Event event object\r | |
523 | @param Context waiting context\r | |
524 | \r | |
525 | **/\r | |
526 | VOID\r | |
527 | EFIAPI\r | |
528 | VirtualKeyboardWaitForKeyEx (\r | |
529 | IN EFI_EVENT Event,\r | |
530 | IN VOID *Context\r | |
531 | )\r | |
532 | \r | |
533 | {\r | |
534 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
535 | \r | |
536 | VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (Context);\r | |
537 | VirtualKeyboardWaitForKey (Event, &VirtualKeyboardPrivate->SimpleTextIn);\r | |
538 | \r | |
539 | }\r | |
540 | \r | |
541 | //\r | |
542 | // EFI Simple Text In Protocol Functions\r | |
543 | //\r | |
544 | /**\r | |
545 | Reset the Keyboard and do BAT test for it, if (ExtendedVerification == TRUE)\r | |
546 | then do some extra keyboard validations.\r | |
547 | \r | |
548 | @param This Pointer of simple text Protocol.\r | |
549 | @param ExtendedVerification Whether perform the extra validation of\r | |
550 | keyboard. True: perform; FALSE: skip.\r | |
551 | \r | |
552 | @retval EFI_SUCCESS The command byte is written successfully.\r | |
553 | @retval EFI_DEVICE_ERROR Errors occurred during resetting keyboard.\r | |
554 | \r | |
555 | **/\r | |
556 | EFI_STATUS\r | |
557 | EFIAPI\r | |
558 | VirtualKeyboardReset (\r | |
559 | IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,\r | |
560 | IN BOOLEAN ExtendedVerification\r | |
561 | )\r | |
562 | {\r | |
563 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
564 | EFI_STATUS Status;\r | |
565 | EFI_TPL OldTpl;\r | |
566 | \r | |
567 | VirtualKeyboardPrivate = VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);\r | |
568 | \r | |
569 | //\r | |
570 | // Raise TPL to avoid mouse operation impact\r | |
571 | //\r | |
572 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
573 | \r | |
574 | if (VirtualKeyboardPrivate->PlatformVirtual &&\r | |
575 | VirtualKeyboardPrivate->PlatformVirtual->Reset) {\r | |
576 | Status = VirtualKeyboardPrivate->PlatformVirtual->Reset ();\r | |
577 | } else {\r | |
578 | Status = EFI_INVALID_PARAMETER;\r | |
579 | }\r | |
580 | \r | |
581 | //\r | |
582 | // resume priority of task level\r | |
583 | //\r | |
584 | gBS->RestoreTPL (OldTpl);\r | |
585 | \r | |
586 | return Status;\r | |
587 | }\r | |
588 | \r | |
589 | /**\r | |
590 | Reset the input device and optionaly run diagnostics\r | |
591 | \r | |
592 | @param This Protocol instance pointer.\r | |
593 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
594 | \r | |
595 | @retval EFI_SUCCESS The device was reset.\r | |
596 | @retval EFI_DEVICE_ERROR The device is not functioning properly and\r | |
597 | could not be reset.\r | |
598 | \r | |
599 | **/\r | |
600 | EFI_STATUS\r | |
601 | EFIAPI\r | |
602 | VirtualKeyboardResetEx (\r | |
603 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
604 | IN BOOLEAN ExtendedVerification\r | |
605 | )\r | |
606 | {\r | |
607 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
608 | EFI_STATUS Status;\r | |
609 | EFI_TPL OldTpl;\r | |
610 | \r | |
611 | VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);\r | |
612 | \r | |
613 | Status = VirtualKeyboardPrivate->SimpleTextIn.Reset (\r | |
614 | &VirtualKeyboardPrivate->SimpleTextIn,\r | |
615 | ExtendedVerification\r | |
616 | );\r | |
617 | if (EFI_ERROR (Status)) {\r | |
618 | return EFI_DEVICE_ERROR;\r | |
619 | }\r | |
620 | \r | |
621 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
622 | \r | |
623 | gBS->RestoreTPL (OldTpl);\r | |
624 | \r | |
625 | return EFI_SUCCESS;\r | |
626 | \r | |
627 | }\r | |
628 | \r | |
629 | /**\r | |
630 | Reads the next keystroke from the input device. The WaitForKey Event can\r | |
631 | be used to test for existance of a keystroke via WaitForEvent () call.\r | |
632 | \r | |
633 | @param VirtualKeyboardPrivate Virtualkeyboard driver private structure.\r | |
634 | @param KeyData A pointer to a buffer that is filled in\r | |
635 | with the keystroke state data for the key\r | |
636 | that was pressed.\r | |
637 | \r | |
638 | @retval EFI_SUCCESS The keystroke information was returned.\r | |
639 | @retval EFI_NOT_READY There was no keystroke data availiable.\r | |
640 | @retval EFI_DEVICE_ERROR The keystroke information was not returned\r | |
641 | due to hardware errors.\r | |
642 | @retval EFI_INVALID_PARAMETER KeyData is NULL.\r | |
643 | \r | |
644 | **/\r | |
645 | EFI_STATUS\r | |
646 | KeyboardReadKeyStrokeWorker (\r | |
647 | IN VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate,\r | |
648 | OUT EFI_KEY_DATA *KeyData\r | |
649 | )\r | |
650 | {\r | |
651 | EFI_STATUS Status;\r | |
652 | EFI_TPL OldTpl;\r | |
653 | if (KeyData == NULL) {\r | |
654 | return EFI_INVALID_PARAMETER;\r | |
655 | }\r | |
656 | \r | |
657 | //\r | |
658 | // Use TimerEvent callback function to check whether there's any key pressed\r | |
659 | //\r | |
660 | \r | |
661 | //\r | |
662 | // Stall 1ms to give a chance to let other driver interrupt this routine for\r | |
663 | // their timer event.\r | |
664 | // e.g. OS loader, other drivers which are driven by timer event will have a\r | |
665 | // bad performance during this period,\r | |
666 | // e.g. usb keyboard driver.\r | |
667 | // Add a stall period can greatly increate other driver performance during\r | |
668 | // the WaitForKey is recursivly invoked. 1ms delay will make little impact\r | |
669 | // to the thunk keyboard driver, and user can not feel the delay at all when\r | |
670 | // input.\r | |
671 | //\r | |
672 | gBS->Stall (1000);\r | |
673 | \r | |
674 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
675 | \r | |
676 | VirtualKeyboardTimerHandler (NULL, VirtualKeyboardPrivate);\r | |
677 | //\r | |
678 | // If there's no key, just return\r | |
679 | //\r | |
680 | Status = CheckQueue (&VirtualKeyboardPrivate->Queue);\r | |
681 | if (EFI_ERROR (Status)) {\r | |
682 | gBS->RestoreTPL (OldTpl);\r | |
683 | return EFI_NOT_READY;\r | |
684 | }\r | |
685 | \r | |
686 | Status = Dequeue (&VirtualKeyboardPrivate->Queue, KeyData);\r | |
687 | \r | |
688 | gBS->RestoreTPL (OldTpl);\r | |
689 | \r | |
690 | return EFI_SUCCESS;\r | |
691 | }\r | |
692 | \r | |
693 | /**\r | |
694 | Read out the scan code of the key that has just been stroked.\r | |
695 | \r | |
696 | @param This Pointer of simple text Protocol.\r | |
697 | @param Key Pointer for store the key that read out.\r | |
698 | \r | |
699 | @retval EFI_SUCCESS The key is read out successfully.\r | |
700 | @retval other The key reading failed.\r | |
701 | \r | |
702 | **/\r | |
703 | EFI_STATUS\r | |
704 | EFIAPI\r | |
705 | VirtualKeyboardReadKeyStroke (\r | |
706 | IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,\r | |
707 | OUT EFI_INPUT_KEY *Key\r | |
708 | )\r | |
709 | {\r | |
710 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
711 | EFI_STATUS Status;\r | |
712 | EFI_KEY_DATA KeyData;\r | |
713 | \r | |
714 | VirtualKeyboardPrivate = VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);\r | |
715 | \r | |
716 | Status = KeyboardReadKeyStrokeWorker (VirtualKeyboardPrivate, &KeyData);\r | |
717 | if (EFI_ERROR (Status)) {\r | |
718 | return Status;\r | |
719 | }\r | |
720 | \r | |
721 | //\r | |
722 | // Convert the Ctrl+[a-z] to Ctrl+[1-26]\r | |
723 | //\r | |
724 | if ((KeyData.KeyState.KeyShiftState & (EFI_LEFT_CONTROL_PRESSED | EFI_RIGHT_CONTROL_PRESSED)) != 0) {\r | |
725 | if (KeyData.Key.UnicodeChar >= L'a' &&\r | |
726 | KeyData.Key.UnicodeChar <= L'z') {\r | |
727 | KeyData.Key.UnicodeChar = (CHAR16) (KeyData.Key.UnicodeChar - L'a' + 1);\r | |
728 | } else if (KeyData.Key.UnicodeChar >= L'A' &&\r | |
729 | KeyData.Key.UnicodeChar <= L'Z') {\r | |
730 | KeyData.Key.UnicodeChar = (CHAR16) (KeyData.Key.UnicodeChar - L'A' + 1);\r | |
731 | }\r | |
732 | }\r | |
733 | \r | |
734 | CopyMem (Key, &KeyData.Key, sizeof (EFI_INPUT_KEY));\r | |
735 | \r | |
736 | return EFI_SUCCESS;\r | |
737 | }\r | |
738 | \r | |
739 | /**\r | |
740 | Reads the next keystroke from the input device. The WaitForKey Event can\r | |
741 | be used to test for existance of a keystroke via WaitForEvent () call.\r | |
742 | \r | |
743 | @param This Protocol instance pointer.\r | |
744 | @param KeyData A pointer to a buffer that is filled in with the\r | |
745 | keystroke state data for the key that was pressed.\r | |
746 | \r | |
747 | @retval EFI_SUCCESS The keystroke information was returned.\r | |
748 | @retval EFI_NOT_READY There was no keystroke data availiable.\r | |
749 | @retval EFI_DEVICE_ERROR The keystroke information was not returned\r | |
750 | due to hardware errors.\r | |
751 | @retval EFI_INVALID_PARAMETER KeyData is NULL.\r | |
752 | \r | |
753 | **/\r | |
754 | EFI_STATUS\r | |
755 | EFIAPI\r | |
756 | VirtualKeyboardReadKeyStrokeEx (\r | |
757 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
758 | OUT EFI_KEY_DATA *KeyData\r | |
759 | )\r | |
760 | {\r | |
761 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
762 | \r | |
763 | if (KeyData == NULL) {\r | |
764 | return EFI_INVALID_PARAMETER;\r | |
765 | }\r | |
766 | \r | |
767 | VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);\r | |
768 | \r | |
769 | return KeyboardReadKeyStrokeWorker (VirtualKeyboardPrivate, KeyData);\r | |
770 | \r | |
771 | }\r | |
772 | \r | |
773 | /**\r | |
774 | Set certain state for the input device.\r | |
775 | \r | |
776 | @param This Protocol instance pointer.\r | |
777 | @param KeyToggleState A pointer to the EFI_KEY_TOGGLE_STATE to set the\r | |
778 | state for the input device.\r | |
779 | \r | |
780 | @retval EFI_SUCCESS The device state was set successfully.\r | |
781 | @retval EFI_DEVICE_ERROR The device is not functioning correctly and\r | |
782 | could not have the setting adjusted.\r | |
783 | @retval EFI_UNSUPPORTED The device does not have the ability to set\r | |
784 | its state.\r | |
785 | @retval EFI_INVALID_PARAMETER KeyToggleState is NULL.\r | |
786 | \r | |
787 | **/\r | |
788 | EFI_STATUS\r | |
789 | EFIAPI\r | |
790 | VirtualKeyboardSetState (\r | |
791 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
792 | IN EFI_KEY_TOGGLE_STATE *KeyToggleState\r | |
793 | )\r | |
794 | {\r | |
795 | if (KeyToggleState == NULL) {\r | |
796 | return EFI_INVALID_PARAMETER;\r | |
797 | }\r | |
798 | \r | |
799 | return EFI_SUCCESS;\r | |
800 | }\r | |
801 | \r | |
802 | /**\r | |
803 | Register a notification function for a particular keystroke for the\r | |
804 | input device.\r | |
805 | \r | |
806 | @param This Protocol instance pointer.\r | |
807 | @param KeyData A pointer to a buffer that is filled in with\r | |
808 | the keystroke information data for the key\r | |
809 | that was pressed.\r | |
810 | @param KeyNotificationFunction Points to the function to be called when the\r | |
811 | key sequence is typed specified by KeyData.\r | |
812 | @param NotifyHandle Points to the unique handle assigned to the\r | |
813 | registered notification.\r | |
814 | \r | |
815 | \r | |
816 | @retval EFI_SUCCESS The notification function was registered\r | |
817 | successfully.\r | |
818 | @retval EFI_OUT_OF_RESOURCES Unable to allocate resources for necesssary\r | |
819 | data structures.\r | |
820 | @retval EFI_INVALID_PARAMETER KeyData or NotifyHandle is NULL.\r | |
821 | \r | |
822 | **/\r | |
823 | EFI_STATUS\r | |
824 | EFIAPI\r | |
825 | VirtualKeyboardRegisterKeyNotify (\r | |
826 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
827 | IN EFI_KEY_DATA *KeyData,\r | |
828 | IN EFI_KEY_NOTIFY_FUNCTION KeyNotificationFunction,\r | |
829 | OUT VOID **NotifyHandle\r | |
830 | )\r | |
831 | {\r | |
832 | EFI_STATUS Status;\r | |
833 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
834 | EFI_TPL OldTpl;\r | |
835 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *NewNotify;\r | |
836 | LIST_ENTRY *Link;\r | |
837 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;\r | |
838 | \r | |
839 | if (KeyData == NULL ||\r | |
840 | NotifyHandle == NULL ||\r | |
841 | KeyNotificationFunction == NULL) {\r | |
842 | return EFI_INVALID_PARAMETER;\r | |
843 | }\r | |
844 | \r | |
845 | VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);\r | |
846 | \r | |
847 | //\r | |
848 | // Enter critical section\r | |
849 | //\r | |
850 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
851 | \r | |
852 | //\r | |
853 | // Return EFI_SUCCESS if the (KeyData, NotificationFunction) is already\r | |
854 | // registered.\r | |
855 | //\r | |
856 | for (Link = VirtualKeyboardPrivate->NotifyList.ForwardLink;\r | |
857 | Link != &VirtualKeyboardPrivate->NotifyList;\r | |
858 | Link = Link->ForwardLink) {\r | |
859 | CurrentNotify = CR (\r | |
860 | Link,\r | |
861 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,\r | |
862 | NotifyEntry,\r | |
863 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE\r | |
864 | );\r | |
865 | if (IsKeyRegistered (&CurrentNotify->KeyData, KeyData)) {\r | |
866 | if (CurrentNotify->KeyNotificationFn == KeyNotificationFunction) {\r | |
867 | *NotifyHandle = CurrentNotify;\r | |
868 | Status = EFI_SUCCESS;\r | |
869 | goto Exit;\r | |
870 | }\r | |
871 | }\r | |
872 | }\r | |
873 | \r | |
874 | //\r | |
875 | // Allocate resource to save the notification function\r | |
876 | //\r | |
877 | \r | |
878 | NewNotify = (VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *) AllocateZeroPool (sizeof (VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY));\r | |
879 | if (NewNotify == NULL) {\r | |
880 | Status = EFI_OUT_OF_RESOURCES;\r | |
881 | goto Exit;\r | |
882 | }\r | |
883 | \r | |
884 | NewNotify->Signature = VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE;\r | |
885 | NewNotify->KeyNotificationFn = KeyNotificationFunction;\r | |
886 | CopyMem (&NewNotify->KeyData, KeyData, sizeof (EFI_KEY_DATA));\r | |
887 | InsertTailList (&VirtualKeyboardPrivate->NotifyList, &NewNotify->NotifyEntry);\r | |
888 | \r | |
889 | *NotifyHandle = NewNotify;\r | |
890 | Status = EFI_SUCCESS;\r | |
891 | \r | |
892 | Exit:\r | |
893 | //\r | |
894 | // Leave critical section and return\r | |
895 | //\r | |
896 | gBS->RestoreTPL (OldTpl);\r | |
897 | return Status;\r | |
898 | \r | |
899 | }\r | |
900 | \r | |
901 | /**\r | |
902 | Remove a registered notification function from a particular keystroke.\r | |
903 | \r | |
904 | @param This Protocol instance pointer.\r | |
905 | @param NotificationHandle The handle of the notification function\r | |
906 | being unregistered.\r | |
907 | \r | |
908 | @retval EFI_SUCCESS The notification function was unregistered\r | |
909 | successfully.\r | |
910 | @retval EFI_INVALID_PARAMETER The NotificationHandle is invalid.\r | |
911 | \r | |
912 | **/\r | |
913 | EFI_STATUS\r | |
914 | EFIAPI\r | |
915 | VirtualKeyboardUnregisterKeyNotify (\r | |
916 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
917 | IN VOID *NotificationHandle\r | |
918 | )\r | |
919 | {\r | |
920 | EFI_STATUS Status;\r | |
921 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
922 | EFI_TPL OldTpl;\r | |
923 | LIST_ENTRY *Link;\r | |
924 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;\r | |
925 | \r | |
926 | //\r | |
927 | // Check incoming notification handle\r | |
928 | //\r | |
929 | if (NotificationHandle == NULL) {\r | |
930 | return EFI_INVALID_PARAMETER;\r | |
931 | }\r | |
932 | \r | |
933 | if (((VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *) NotificationHandle)->Signature !=\r | |
934 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE) {\r | |
935 | return EFI_INVALID_PARAMETER;\r | |
936 | }\r | |
937 | \r | |
938 | VirtualKeyboardPrivate = TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS (This);\r | |
939 | \r | |
940 | //\r | |
941 | // Enter critical section\r | |
942 | //\r | |
943 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
944 | \r | |
945 | for (Link = VirtualKeyboardPrivate->NotifyList.ForwardLink;\r | |
946 | Link != &VirtualKeyboardPrivate->NotifyList;\r | |
947 | Link = Link->ForwardLink) {\r | |
948 | CurrentNotify = CR (\r | |
949 | Link,\r | |
950 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,\r | |
951 | NotifyEntry,\r | |
952 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE\r | |
953 | );\r | |
954 | if (CurrentNotify == NotificationHandle) {\r | |
955 | //\r | |
956 | // Remove the notification function from NotifyList and free resources\r | |
957 | //\r | |
958 | RemoveEntryList (&CurrentNotify->NotifyEntry);\r | |
959 | \r | |
960 | Status = EFI_SUCCESS;\r | |
961 | goto Exit;\r | |
962 | }\r | |
963 | }\r | |
964 | \r | |
965 | //\r | |
966 | // Can not find the specified Notification Handle\r | |
967 | //\r | |
968 | Status = EFI_INVALID_PARAMETER;\r | |
969 | \r | |
970 | Exit:\r | |
971 | //\r | |
972 | // Leave critical section and return\r | |
973 | //\r | |
974 | gBS->RestoreTPL (OldTpl);\r | |
975 | return Status;\r | |
976 | }\r | |
977 | \r | |
978 | /**\r | |
979 | Timer event handler: read a series of scancodes from 8042\r | |
980 | and put them into memory scancode buffer.\r | |
981 | it read as much scancodes to either fill\r | |
982 | the memory buffer or empty the keyboard buffer.\r | |
983 | It is registered as running under TPL_NOTIFY\r | |
984 | \r | |
985 | @param Event The timer event\r | |
986 | @param Context A KEYBOARD_CONSOLE_IN_DEV pointer\r | |
987 | \r | |
988 | **/\r | |
989 | VOID\r | |
990 | EFIAPI\r | |
991 | VirtualKeyboardTimerHandler (\r | |
992 | IN EFI_EVENT Event,\r | |
993 | IN VOID *Context\r | |
994 | )\r | |
995 | {\r | |
996 | EFI_TPL OldTpl;\r | |
997 | LIST_ENTRY *Link;\r | |
998 | EFI_KEY_DATA KeyData;\r | |
999 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;\r | |
1000 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
1001 | VIRTUAL_KBD_KEY VirtualKey;\r | |
1002 | \r | |
1003 | VirtualKeyboardPrivate = Context;\r | |
1004 | \r | |
1005 | //\r | |
1006 | // Enter critical section\r | |
1007 | //\r | |
1008 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
1009 | \r | |
1010 | if (VirtualKeyboardPrivate->PlatformVirtual &&\r | |
1011 | VirtualKeyboardPrivate->PlatformVirtual->Query) {\r | |
1012 | if (VirtualKeyboardPrivate->PlatformVirtual->Query (&VirtualKey) ==\r | |
1013 | FALSE) {\r | |
1014 | goto Exit;\r | |
1015 | }\r | |
1016 | // Found key\r | |
1017 | KeyData.Key.ScanCode = VirtualKey.Key.ScanCode;\r | |
1018 | KeyData.Key.UnicodeChar = VirtualKey.Key.UnicodeChar;\r | |
1019 | KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID;\r | |
1020 | KeyData.KeyState.KeyToggleState = EFI_TOGGLE_STATE_VALID;\r | |
1021 | if (VirtualKeyboardPrivate->PlatformVirtual->Clear) {\r | |
1022 | VirtualKeyboardPrivate->PlatformVirtual->Clear (&VirtualKey);\r | |
1023 | }\r | |
1024 | } else {\r | |
1025 | goto Exit;\r | |
1026 | }\r | |
1027 | \r | |
1028 | //\r | |
1029 | // Signal KeyNotify process event if this key pressed matches any key registered.\r | |
1030 | //\r | |
1031 | for (Link = VirtualKeyboardPrivate->NotifyList.ForwardLink;\r | |
1032 | Link != &VirtualKeyboardPrivate->NotifyList;\r | |
1033 | Link = Link->ForwardLink) {\r | |
1034 | CurrentNotify = CR (\r | |
1035 | Link,\r | |
1036 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,\r | |
1037 | NotifyEntry,\r | |
1038 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE\r | |
1039 | );\r | |
1040 | if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {\r | |
1041 | //\r | |
1042 | // The key notification function needs to run at TPL_CALLBACK\r | |
1043 | // while current TPL is TPL_NOTIFY. It will be invoked in\r | |
1044 | // KeyNotifyProcessHandler() which runs at TPL_CALLBACK.\r | |
1045 | //\r | |
1046 | Enqueue (&VirtualKeyboardPrivate->QueueForNotify, &KeyData);\r | |
1047 | gBS->SignalEvent (VirtualKeyboardPrivate->KeyNotifyProcessEvent);\r | |
1048 | }\r | |
1049 | }\r | |
1050 | \r | |
1051 | Enqueue (&VirtualKeyboardPrivate->Queue, &KeyData);\r | |
1052 | \r | |
1053 | Exit:\r | |
1054 | //\r | |
1055 | // Leave critical section and return\r | |
1056 | //\r | |
1057 | gBS->RestoreTPL (OldTpl);\r | |
1058 | }\r | |
1059 | \r | |
1060 | /**\r | |
1061 | Process key notify.\r | |
1062 | \r | |
1063 | @param Event Indicates the event that invoke this function.\r | |
1064 | @param Context Indicates the calling context.\r | |
1065 | **/\r | |
1066 | VOID\r | |
1067 | EFIAPI\r | |
1068 | KeyNotifyProcessHandler (\r | |
1069 | IN EFI_EVENT Event,\r | |
1070 | IN VOID *Context\r | |
1071 | )\r | |
1072 | {\r | |
1073 | EFI_STATUS Status;\r | |
1074 | VIRTUAL_KEYBOARD_DEV *VirtualKeyboardPrivate;\r | |
1075 | EFI_KEY_DATA KeyData;\r | |
1076 | LIST_ENTRY *Link;\r | |
1077 | LIST_ENTRY *NotifyList;\r | |
1078 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;\r | |
1079 | EFI_TPL OldTpl;\r | |
1080 | \r | |
1081 | VirtualKeyboardPrivate = (VIRTUAL_KEYBOARD_DEV *) Context;\r | |
1082 | \r | |
1083 | //\r | |
1084 | // Invoke notification functions.\r | |
1085 | //\r | |
1086 | NotifyList = &VirtualKeyboardPrivate->NotifyList;\r | |
1087 | while (TRUE) {\r | |
1088 | //\r | |
1089 | // Enter critical section\r | |
1090 | //\r | |
1091 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
1092 | Status = Dequeue (&VirtualKeyboardPrivate->QueueForNotify, &KeyData);\r | |
1093 | //\r | |
1094 | // Leave critical section\r | |
1095 | //\r | |
1096 | gBS->RestoreTPL (OldTpl);\r | |
1097 | if (EFI_ERROR (Status)) {\r | |
1098 | break;\r | |
1099 | }\r | |
1100 | for (Link = GetFirstNode (NotifyList);\r | |
1101 | !IsNull (NotifyList, Link);\r | |
1102 | Link = GetNextNode (NotifyList, Link)) {\r | |
1103 | CurrentNotify = CR (Link,\r | |
1104 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY,\r | |
1105 | NotifyEntry,\r | |
1106 | VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE\r | |
1107 | );\r | |
1108 | if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {\r | |
1109 | CurrentNotify->KeyNotificationFn (&KeyData);\r | |
1110 | }\r | |
1111 | }\r | |
1112 | }\r | |
1113 | }\r | |
1114 | \r | |
1115 | /**\r | |
1116 | The user Entry Point for module VirtualKeyboard. The user code starts with\r | |
1117 | this function.\r | |
1118 | \r | |
1119 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r | |
1120 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
1121 | \r | |
1122 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
1123 | @retval other Some error occurs when executing this entry point.\r | |
1124 | \r | |
1125 | **/\r | |
1126 | EFI_STATUS\r | |
1127 | EFIAPI\r | |
1128 | InitializeVirtualKeyboard(\r | |
1129 | IN EFI_HANDLE ImageHandle,\r | |
1130 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1131 | )\r | |
1132 | {\r | |
1133 | EFI_STATUS Status;\r | |
1134 | \r | |
1135 | //\r | |
1136 | // Install driver model protocol(s).\r | |
1137 | //\r | |
1138 | Status = EfiLibInstallDriverBindingComponentName2 (\r | |
1139 | ImageHandle,\r | |
1140 | SystemTable,\r | |
1141 | &gVirtualKeyboardDriverBinding,\r | |
1142 | ImageHandle,\r | |
1143 | &gVirtualKeyboardComponentName,\r | |
1144 | &gVirtualKeyboardComponentName2\r | |
1145 | );\r | |
1146 | ASSERT_EFI_ERROR (Status);\r | |
1147 | \r | |
1148 | return Status;\r | |
1149 | }\r |