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1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r | |
4 | Copyright (c) 2018, Linaro Ltd. All rights reserved.<BR>\r | |
5 | \r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions\r | |
8 | of the BSD License which accompanies this distribution. The\r | |
9 | full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #ifndef _VIRTUAL_KEYBOARD_H_\r | |
18 | #define _VIRTUAL_KEYBOARD_H_\r | |
19 | \r | |
20 | \r | |
21 | #include <Guid/StatusCodeDataTypeId.h>\r | |
22 | #include <Protocol/DevicePath.h>\r | |
23 | #include <Protocol/PlatformVirtualKeyboard.h>\r | |
24 | #include <Protocol/SimpleTextIn.h>\r | |
25 | #include <Protocol/SimpleTextInEx.h>\r | |
26 | \r | |
27 | #include <Library/BaseLib.h>\r | |
28 | #include <Library/BaseMemoryLib.h>\r | |
29 | #include <Library/DebugLib.h>\r | |
30 | #include <Library/MemoryAllocationLib.h>\r | |
31 | #include <Library/IoLib.h>\r | |
32 | #include <Library/PcdLib.h>\r | |
33 | #include <Library/ReportStatusCodeLib.h>\r | |
34 | #include <Library/UefiBootServicesTableLib.h>\r | |
35 | #include <Library/UefiDriverEntryPoint.h>\r | |
36 | #include <Library/UefiLib.h>\r | |
37 | \r | |
38 | //\r | |
39 | // Driver Binding Externs\r | |
40 | //\r | |
41 | extern EFI_DRIVER_BINDING_PROTOCOL gVirtualKeyboardDriverBinding;\r | |
42 | extern EFI_COMPONENT_NAME_PROTOCOL gVirtualKeyboardComponentName;\r | |
43 | extern EFI_COMPONENT_NAME2_PROTOCOL gVirtualKeyboardComponentName2;\r | |
44 | \r | |
45 | \r | |
46 | //\r | |
47 | // VIRTUAL Keyboard Defines\r | |
48 | //\r | |
49 | #define CHAR_SCANCODE 0xe0\r | |
50 | #define CHAR_ESC 0x1b\r | |
51 | \r | |
52 | #define KEYBOARD_TIMEOUT 65536 // 0.07s\r | |
53 | #define KEYBOARD_WAITFORVALUE_TIMEOUT 1000000 // 1s\r | |
54 | #define KEYBOARD_BAT_TIMEOUT 4000000 // 4s\r | |
55 | #define KEYBOARD_TIMER_INTERVAL 500000 // 0.5s\r | |
56 | \r | |
57 | #define QUEUE_MAX_COUNT 32\r | |
58 | \r | |
59 | #define KEYBOARD_SCAN_CODE_MAX_COUNT 32\r | |
60 | \r | |
61 | //\r | |
62 | // VIRTUAL Keyboard Device Structure\r | |
63 | //\r | |
64 | #define VIRTUAL_KEYBOARD_DEV_SIGNATURE SIGNATURE_32 ('V', 'K', 'B', 'D')\r | |
65 | #define VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE SIGNATURE_32 ('v', 'k', 'c', 'n')\r | |
66 | \r | |
67 | typedef struct _VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY {\r | |
68 | UINTN Signature;\r | |
69 | EFI_KEY_DATA KeyData;\r | |
70 | EFI_KEY_NOTIFY_FUNCTION KeyNotificationFn;\r | |
71 | LIST_ENTRY NotifyEntry;\r | |
72 | } VIRTUAL_KEYBOARD_CONSOLE_IN_EX_NOTIFY;\r | |
73 | \r | |
74 | typedef struct {\r | |
75 | UINTN Front;\r | |
76 | UINTN Rear;\r | |
77 | EFI_KEY_DATA Buffer[QUEUE_MAX_COUNT];\r | |
78 | } SIMPLE_QUEUE;\r | |
79 | \r | |
80 | typedef struct {\r | |
81 | UINT8 Buffer[KEYBOARD_SCAN_CODE_MAX_COUNT];\r | |
82 | UINTN Head;\r | |
83 | UINTN Tail;\r | |
84 | } SCAN_CODE_QUEUE;\r | |
85 | \r | |
86 | typedef struct {\r | |
87 | UINTN Signature;\r | |
88 | EFI_HANDLE Handle;\r | |
89 | PLATFORM_VIRTUAL_KBD_PROTOCOL *PlatformVirtual;\r | |
90 | EFI_SIMPLE_TEXT_INPUT_PROTOCOL SimpleTextIn;\r | |
91 | EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL SimpleTextInputEx;\r | |
92 | \r | |
93 | //\r | |
94 | // Buffer storing EFI_KEY_DATA\r | |
95 | //\r | |
96 | SIMPLE_QUEUE Queue;\r | |
97 | SIMPLE_QUEUE QueueForNotify;\r | |
98 | \r | |
99 | //\r | |
100 | // Notification Function List\r | |
101 | //\r | |
102 | LIST_ENTRY NotifyList;\r | |
103 | EFI_EVENT KeyNotifyProcessEvent;\r | |
104 | EFI_EVENT TimerEvent;\r | |
105 | } VIRTUAL_KEYBOARD_DEV;\r | |
106 | \r | |
107 | #define VIRTUAL_KEYBOARD_DEV_FROM_THIS(a) CR (a, VIRTUAL_KEYBOARD_DEV, SimpleTextIn, VIRTUAL_KEYBOARD_DEV_SIGNATURE)\r | |
108 | #define TEXT_INPUT_EX_VIRTUAL_KEYBOARD_DEV_FROM_THIS(a) \\r | |
109 | CR (a, \\r | |
110 | VIRTUAL_KEYBOARD_DEV, \\r | |
111 | SimpleTextInputEx, \\r | |
112 | VIRTUAL_KEYBOARD_DEV_SIGNATURE \\r | |
113 | )\r | |
114 | \r | |
115 | //\r | |
116 | // Global Variables\r | |
117 | //\r | |
118 | extern EFI_DRIVER_BINDING_PROTOCOL gVirtualKeyboardDriverBinding;\r | |
119 | \r | |
120 | //\r | |
121 | // Driver Binding Protocol functions\r | |
122 | //\r | |
123 | \r | |
124 | /**\r | |
125 | Check whether the driver supports this device.\r | |
126 | \r | |
127 | @param This The Udriver binding protocol.\r | |
128 | @param Controller The controller handle to check.\r | |
129 | @param RemainingDevicePath The remaining device path.\r | |
130 | \r | |
131 | @retval EFI_SUCCESS The driver supports this controller.\r | |
132 | @retval other This device isn't supported.\r | |
133 | \r | |
134 | **/\r | |
135 | EFI_STATUS\r | |
136 | EFIAPI\r | |
137 | VirtualKeyboardDriverBindingSupported (\r | |
138 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
139 | IN EFI_HANDLE Controller,\r | |
140 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
141 | );\r | |
142 | \r | |
143 | /**\r | |
144 | Starts the device with this driver.\r | |
145 | \r | |
146 | @param This The driver binding instance.\r | |
147 | @param Controller Handle of device to bind driver to.\r | |
148 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
149 | device to start.\r | |
150 | \r | |
151 | @retval EFI_SUCCESS The controller is controlled by the driver.\r | |
152 | @retval Other This controller cannot be started.\r | |
153 | \r | |
154 | **/\r | |
155 | EFI_STATUS\r | |
156 | EFIAPI\r | |
157 | VirtualKeyboardDriverBindingStart (\r | |
158 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
159 | IN EFI_HANDLE Controller,\r | |
160 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
161 | );\r | |
162 | \r | |
163 | /**\r | |
164 | Stop the device handled by this driver.\r | |
165 | \r | |
166 | @param This The driver binding protocol.\r | |
167 | @param Controller The controller to release.\r | |
168 | @param NumberOfChildren The number of handles in ChildHandleBuffer.\r | |
169 | @param ChildHandleBuffer The array of child handle.\r | |
170 | \r | |
171 | @retval EFI_SUCCESS The device was stopped.\r | |
172 | @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r | |
173 | @retval Others Fail to uninstall protocols attached on the device.\r | |
174 | \r | |
175 | **/\r | |
176 | EFI_STATUS\r | |
177 | EFIAPI\r | |
178 | VirtualKeyboardDriverBindingStop (\r | |
179 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
180 | IN EFI_HANDLE Controller,\r | |
181 | IN UINTN NumberOfChildren,\r | |
182 | IN EFI_HANDLE *ChildHandleBuffer\r | |
183 | );\r | |
184 | \r | |
185 | /**\r | |
186 | Retrieves a Unicode string that is the user readable name of the driver.\r | |
187 | \r | |
188 | This function retrieves the user readable name of a driver in the form of a\r | |
189 | Unicode string. If the driver specified by This has a user readable name in\r | |
190 | the language specified by Language, then a pointer to the driver name is\r | |
191 | returned in DriverName, and EFI_SUCCESS is returned. If the driver specified\r | |
192 | by This does not support the language specified by Language,\r | |
193 | then EFI_UNSUPPORTED is returned.\r | |
194 | \r | |
195 | @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r | |
196 | EFI_COMPONENT_NAME_PROTOCOL instance.\r | |
197 | \r | |
198 | @param Language[in] A pointer to a Null-terminated ASCII string\r | |
199 | array indicating the language. This is the\r | |
200 | language of the driver name that the caller is\r | |
201 | requesting, and it must match one of the\r | |
202 | languages specified in SupportedLanguages. The\r | |
203 | number of languages supported by a driver is up\r | |
204 | to the driver writer. Language is specified\r | |
205 | in RFC 4646 or ISO 639-2 language code format.\r | |
206 | \r | |
207 | @param DriverName[out] A pointer to the Unicode string to return.\r | |
208 | This Unicode string is the name of the\r | |
209 | driver specified by This in the language\r | |
210 | specified by Language.\r | |
211 | \r | |
212 | @retval EFI_SUCCESS The Unicode string for the Driver specified by\r | |
213 | This and the language specified by Language was\r | |
214 | returned in DriverName.\r | |
215 | \r | |
216 | @retval EFI_INVALID_PAVIRTUALETER Language is NULL.\r | |
217 | \r | |
218 | @retval EFI_INVALID_PAVIRTUALETER DriverName is NULL.\r | |
219 | \r | |
220 | @retval EFI_UNSUPPORTED The driver specified by This does not support\r | |
221 | the language specified by Language.\r | |
222 | \r | |
223 | **/\r | |
224 | EFI_STATUS\r | |
225 | EFIAPI\r | |
226 | VirtualKeyboardComponentNameGetDriverName (\r | |
227 | IN EFI_COMPONENT_NAME_PROTOCOL *This,\r | |
228 | IN CHAR8 *Language,\r | |
229 | OUT CHAR16 **DriverName\r | |
230 | );\r | |
231 | \r | |
232 | \r | |
233 | /**\r | |
234 | Retrieves a Unicode string that is the user readable name of the controller\r | |
235 | that is being managed by a driver.\r | |
236 | \r | |
237 | This function retrieves the user readable name of the controller specified by\r | |
238 | ControllerHandle and ChildHandle in the form of a Unicode string. If the\r | |
239 | driver specified by This has a user readable name in the language specified by\r | |
240 | Language, then a pointer to the controller name is returned in ControllerName,\r | |
241 | and EFI_SUCCESS is returned. If the driver specified by This is not currently\r | |
242 | managing the controller specified by ControllerHandle and ChildHandle,\r | |
243 | then EFI_UNSUPPORTED is returned. If the driver specified by This does not\r | |
244 | support the language specified by Language, then EFI_UNSUPPORTED is returned.\r | |
245 | \r | |
246 | @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r | |
247 | EFI_COMPONENT_NAME_PROTOCOL instance.\r | |
248 | \r | |
249 | @param ControllerHandle[in] The handle of a controller that the driver\r | |
250 | specified by This is managing. This handle\r | |
251 | specifies the controller whose name is to be\r | |
252 | returned.\r | |
253 | \r | |
254 | @param ChildHandle[in] The handle of the child controller to retrieve\r | |
255 | the name of. This is an optional parameter that\r | |
256 | may be NULL. It will be NULL for device\r | |
257 | drivers. It will also be NULL for a bus drivers\r | |
258 | that wish to retrieve the name of the bus\r | |
259 | controller. It will not be NULL for a bus\r | |
260 | driver that wishes to retrieve the name of a\r | |
261 | child controller.\r | |
262 | \r | |
263 | @param Language[in] A pointer to a Null-terminated ASCII string\r | |
264 | array indicating the language. This is the\r | |
265 | language of the driver name that the caller is\r | |
266 | requesting, and it must match one of the\r | |
267 | languages specified in SupportedLanguages. The\r | |
268 | number of languages supported by a driver is up\r | |
269 | to the driver writer. Language is specified in\r | |
270 | RFC 4646 or ISO 639-2 language code format.\r | |
271 | \r | |
272 | @param ControllerName[out] A pointer to the Unicode string to return.\r | |
273 | This Unicode string is the name of the\r | |
274 | controller specified by ControllerHandle and\r | |
275 | ChildHandle in the language specified by\r | |
276 | Language from the point of view of the driver\r | |
277 | specified by This.\r | |
278 | \r | |
279 | @retval EFI_SUCCESS The Unicode string for the user readable name in\r | |
280 | the language specified by Language for the\r | |
281 | driver specified by This was returned in\r | |
282 | DriverName.\r | |
283 | \r | |
284 | @retval EFI_INVALID_PAVIRTUALETER ControllerHandle is NULL.\r | |
285 | \r | |
286 | @retval EFI_INVALID_PAVIRTUALETER ChildHandle is not NULL and it is not a valid\r | |
287 | EFI_HANDLE.\r | |
288 | \r | |
289 | @retval EFI_INVALID_PAVIRTUALETER Language is NULL.\r | |
290 | \r | |
291 | @retval EFI_INVALID_PAVIRTUALETER ControllerName is NULL.\r | |
292 | \r | |
293 | @retval EFI_UNSUPPORTED The driver specified by This is not currently\r | |
294 | managing the controller specified by\r | |
295 | ControllerHandle and ChildHandle.\r | |
296 | \r | |
297 | @retval EFI_UNSUPPORTED The driver specified by This does not support\r | |
298 | the language specified by Language.\r | |
299 | \r | |
300 | **/\r | |
301 | EFI_STATUS\r | |
302 | EFIAPI\r | |
303 | VirtualKeyboardComponentNameGetControllerName (\r | |
304 | IN EFI_COMPONENT_NAME_PROTOCOL *This,\r | |
305 | IN EFI_HANDLE ControllerHandle,\r | |
306 | IN EFI_HANDLE ChildHandle OPTIONAL,\r | |
307 | IN CHAR8 *Language,\r | |
308 | OUT CHAR16 **ControllerName\r | |
309 | );\r | |
310 | \r | |
311 | \r | |
312 | //\r | |
313 | // Simple Text Input Protocol functions\r | |
314 | //\r | |
315 | /**\r | |
316 | Reset the Keyboard and do BAT test for it, if (ExtendedVerification == TRUE) then do some extra keyboard validations.\r | |
317 | \r | |
318 | @param This Pointer of simple text Protocol.\r | |
319 | @param ExtendedVerification Whether perform the extra validation of keyboard. True: perform; FALSE: skip.\r | |
320 | \r | |
321 | @retval EFI_SUCCESS The command byte is written successfully.\r | |
322 | @retval EFI_DEVICE_ERROR Errors occurred during resetting keyboard.\r | |
323 | \r | |
324 | **/\r | |
325 | EFI_STATUS\r | |
326 | EFIAPI\r | |
327 | VirtualKeyboardReset (\r | |
328 | IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,\r | |
329 | IN BOOLEAN ExtendedVerification\r | |
330 | );\r | |
331 | \r | |
332 | /**\r | |
333 | Reset the input device and optionaly run diagnostics\r | |
334 | \r | |
335 | @param This Protocol instance pointer.\r | |
336 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
337 | \r | |
338 | @retval EFI_SUCCESS The device was reset.\r | |
339 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
340 | not be reset.\r | |
341 | \r | |
342 | **/\r | |
343 | EFI_STATUS\r | |
344 | EFIAPI\r | |
345 | VirtualKeyboardResetEx (\r | |
346 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
347 | IN BOOLEAN ExtendedVerification\r | |
348 | );\r | |
349 | \r | |
350 | /**\r | |
351 | Set certain state for the input device.\r | |
352 | \r | |
353 | @param This Protocol instance pointer.\r | |
354 | @param KeyToggleState A pointer to the EFI_KEY_TOGGLE_STATE to set the\r | |
355 | state for the input device.\r | |
356 | \r | |
357 | @retval EFI_SUCCESS The device state was set successfully.\r | |
358 | @retval EFI_DEVICE_ERROR The device is not functioning correctly and could\r | |
359 | not have the setting adjusted.\r | |
360 | @retval EFI_UNSUPPORTED The device does not have the ability to set its state.\r | |
361 | @retval EFI_INVALID_PAVIRTUALETER KeyToggleState is NULL.\r | |
362 | \r | |
363 | **/\r | |
364 | EFI_STATUS\r | |
365 | EFIAPI\r | |
366 | VirtualKeyboardSetState (\r | |
367 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
368 | IN EFI_KEY_TOGGLE_STATE *KeyToggleState\r | |
369 | );\r | |
370 | \r | |
371 | /**\r | |
372 | Register a notification function for a particular keystroke for the input device.\r | |
373 | \r | |
374 | @param This Protocol instance pointer.\r | |
375 | @param KeyData A pointer to a buffer that is filled in with the keystroke\r | |
376 | information data for the key that was pressed.\r | |
377 | @param KeyNotificationFunction Points to the function to be called when the key\r | |
378 | sequence is typed specified by KeyData.\r | |
379 | @param NotifyHandle Points to the unique handle assigned to the registered notification.\r | |
380 | \r | |
381 | \r | |
382 | @retval EFI_SUCCESS The notification function was registered successfully.\r | |
383 | @retval EFI_OUT_OF_RESOURCES Unable to allocate resources for necesssary data structures.\r | |
384 | @retval EFI_INVALID_PAVIRTUALETER KeyData or NotifyHandle is NULL.\r | |
385 | \r | |
386 | **/\r | |
387 | EFI_STATUS\r | |
388 | EFIAPI\r | |
389 | VirtualKeyboardRegisterKeyNotify (\r | |
390 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
391 | IN EFI_KEY_DATA *KeyData,\r | |
392 | IN EFI_KEY_NOTIFY_FUNCTION KeyNotificationFunction,\r | |
393 | OUT VOID **NotifyHandle\r | |
394 | );\r | |
395 | \r | |
396 | /**\r | |
397 | Remove a registered notification function from a particular keystroke.\r | |
398 | \r | |
399 | @param This Protocol instance pointer.\r | |
400 | @param NotificationHandle The handle of the notification function being unregistered.\r | |
401 | \r | |
402 | @retval EFI_SUCCESS The notification function was unregistered successfully.\r | |
403 | @retval EFI_INVALID_PAVIRTUALETER The NotificationHandle is invalid.\r | |
404 | \r | |
405 | **/\r | |
406 | EFI_STATUS\r | |
407 | EFIAPI\r | |
408 | VirtualKeyboardUnregisterKeyNotify (\r | |
409 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
410 | IN VOID *NotificationHandle\r | |
411 | );\r | |
412 | \r | |
413 | //\r | |
414 | // Private worker functions\r | |
415 | //\r | |
416 | /**\r | |
417 | Free keyboard notify list.\r | |
418 | \r | |
419 | @param ListHead The list head\r | |
420 | \r | |
421 | @retval EFI_SUCCESS Free the notify list successfully\r | |
422 | @retval EFI_INVALID_PAVIRTUALETER ListHead is invalid.\r | |
423 | \r | |
424 | **/\r | |
425 | EFI_STATUS\r | |
426 | VirtualKeyboardFreeNotifyList (\r | |
427 | IN OUT LIST_ENTRY *ListHead\r | |
428 | );\r | |
429 | \r | |
430 | /**\r | |
431 | Check if key is registered.\r | |
432 | \r | |
433 | @param RegsiteredData A pointer to a buffer that is filled in with the keystroke\r | |
434 | state data for the key that was registered.\r | |
435 | @param InputData A pointer to a buffer that is filled in with the keystroke\r | |
436 | state data for the key that was pressed.\r | |
437 | \r | |
438 | @retval TRUE Key be pressed matches a registered key.\r | |
439 | @retval FLASE Match failed.\r | |
440 | \r | |
441 | **/\r | |
442 | BOOLEAN\r | |
443 | IsKeyRegistered (\r | |
444 | IN EFI_KEY_DATA *RegsiteredData,\r | |
445 | IN EFI_KEY_DATA *InputData\r | |
446 | );\r | |
447 | \r | |
448 | /**\r | |
449 | Waiting on the keyboard event, if there's any key pressed by the user, signal the event\r | |
450 | \r | |
451 | @param Event The event that be siganlled when any key has been stroked.\r | |
452 | @param Context Pointer of the protocol EFI_SIMPLE_TEXT_INPUT_PROTOCOL.\r | |
453 | \r | |
454 | **/\r | |
455 | VOID\r | |
456 | EFIAPI\r | |
457 | VirtualKeyboardWaitForKey (\r | |
458 | IN EFI_EVENT Event,\r | |
459 | IN VOID *Context\r | |
460 | );\r | |
461 | \r | |
462 | /**\r | |
463 | Waiting on the keyboard event, if there's any key pressed by the user, signal the event\r | |
464 | \r | |
465 | @param Event The event that be siganlled when any key has been stroked.\r | |
466 | @param Context Pointer of the protocol EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.\r | |
467 | \r | |
468 | **/\r | |
469 | VOID\r | |
470 | EFIAPI\r | |
471 | VirtualKeyboardWaitForKeyEx (\r | |
472 | IN EFI_EVENT Event,\r | |
473 | IN VOID *Context\r | |
474 | );\r | |
475 | \r | |
476 | /**\r | |
477 | Timer event handler: read a series of key stroke from 8042\r | |
478 | and put them into memory key buffer.\r | |
479 | It is registered as running under TPL_NOTIFY\r | |
480 | \r | |
481 | @param Event The timer event\r | |
482 | @param Context A VIRTUAL_KEYBOARD_DEV pointer\r | |
483 | \r | |
484 | **/\r | |
485 | VOID\r | |
486 | EFIAPI\r | |
487 | VirtualKeyboardTimerHandler (\r | |
488 | IN EFI_EVENT Event,\r | |
489 | IN VOID *Context\r | |
490 | );\r | |
491 | \r | |
492 | /**\r | |
493 | Process key notify.\r | |
494 | \r | |
495 | @param Event Indicates the event that invoke this function.\r | |
496 | @param Context Indicates the calling context.\r | |
497 | **/\r | |
498 | VOID\r | |
499 | EFIAPI\r | |
500 | KeyNotifyProcessHandler (\r | |
501 | IN EFI_EVENT Event,\r | |
502 | IN VOID *Context\r | |
503 | );\r | |
504 | \r | |
505 | /**\r | |
506 | Read out the scan code of the key that has just been stroked.\r | |
507 | \r | |
508 | @param This Pointer of simple text Protocol.\r | |
509 | @param Key Pointer for store the key that read out.\r | |
510 | \r | |
511 | @retval EFI_SUCCESS The key is read out successfully.\r | |
512 | @retval other The key reading failed.\r | |
513 | \r | |
514 | **/\r | |
515 | EFI_STATUS\r | |
516 | EFIAPI\r | |
517 | VirtualKeyboardReadKeyStroke (\r | |
518 | IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,\r | |
519 | OUT EFI_INPUT_KEY *Key\r | |
520 | );\r | |
521 | \r | |
522 | /**\r | |
523 | Reads the next keystroke from the input device. The WaitForKey Event can\r | |
524 | be used to test for existance of a keystroke via WaitForEvent () call.\r | |
525 | \r | |
526 | @param This Protocol instance pointer.\r | |
527 | @param KeyData A pointer to a buffer that is filled in with the keystroke\r | |
528 | state data for the key that was pressed.\r | |
529 | \r | |
530 | @retval EFI_SUCCESS The keystroke information was returned.\r | |
531 | @retval EFI_NOT_READY There was no keystroke data availiable.\r | |
532 | @retval EFI_DEVICE_ERROR The keystroke information was not returned due to\r | |
533 | hardware errors.\r | |
534 | @retval EFI_INVALID_PAVIRTUALETER KeyData is NULL.\r | |
535 | \r | |
536 | **/\r | |
537 | EFI_STATUS\r | |
538 | EFIAPI\r | |
539 | VirtualKeyboardReadKeyStrokeEx (\r | |
540 | IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,\r | |
541 | OUT EFI_KEY_DATA *KeyData\r | |
542 | );\r | |
543 | \r | |
544 | #endif /* _VIRTUAL_KEYBOARD_H_ */\r |