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ed838d0c | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2004 - 2005, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | Keyboard.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Helper functions for USB Keyboard Driver\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | \r | |
23 | **/\r | |
24 | \r | |
25 | #include "keyboard.h"\r | |
26 | #include <Library/UsbLib.h>\r | |
27 | //\r | |
28 | // USB Key Code to Efi key mapping table\r | |
29 | // Format:<efi scan code>, <unicode without shift>, <unicode with shift>\r | |
30 | //\r | |
31 | STATIC\r | |
32 | UINT8 KeyConvertionTable[USB_KEYCODE_MAX_MAKE][3] = {\r | |
33 | { SCAN_NULL, 'a', 'A' }, // 0x04\r | |
34 | { SCAN_NULL, 'b', 'B' }, // 0x05\r | |
35 | { SCAN_NULL, 'c', 'C' }, // 0x06\r | |
36 | { SCAN_NULL, 'd', 'D' }, // 0x07\r | |
37 | { SCAN_NULL, 'e', 'E' }, // 0x08\r | |
38 | { SCAN_NULL, 'f', 'F' }, // 0x09\r | |
39 | { SCAN_NULL, 'g', 'G' }, // 0x0A\r | |
40 | { SCAN_NULL, 'h', 'H' }, // 0x0B\r | |
41 | { SCAN_NULL, 'i', 'I' }, // 0x0C\r | |
42 | { SCAN_NULL, 'j', 'J' }, // 0x0D\r | |
43 | { SCAN_NULL, 'k', 'K' }, // 0x0E\r | |
44 | { SCAN_NULL, 'l', 'L' }, // 0x0F\r | |
45 | { SCAN_NULL, 'm', 'M' }, // 0x10\r | |
46 | { SCAN_NULL, 'n', 'N' }, // 0x11\r | |
47 | { SCAN_NULL, 'o', 'O' }, // 0x12\r | |
48 | { SCAN_NULL, 'p', 'P' }, // 0x13\r | |
49 | { SCAN_NULL, 'q', 'Q' }, // 0x14\r | |
50 | { SCAN_NULL, 'r', 'R' }, // 0x15\r | |
51 | { SCAN_NULL, 's', 'S' }, // 0x16\r | |
52 | { SCAN_NULL, 't', 'T' }, // 0x17\r | |
53 | { SCAN_NULL, 'u', 'U' }, // 0x18\r | |
54 | { SCAN_NULL, 'v', 'V' }, // 0x19\r | |
55 | { SCAN_NULL, 'w', 'W' }, // 0x1A\r | |
56 | { SCAN_NULL, 'x', 'X' }, // 0x1B\r | |
57 | { SCAN_NULL, 'y', 'Y' }, // 0x1C\r | |
58 | { SCAN_NULL, 'z', 'Z' }, // 0x1D\r | |
59 | { SCAN_NULL, '1', '!' }, // 0x1E\r | |
60 | { SCAN_NULL, '2', '@' }, // 0x1F\r | |
61 | { SCAN_NULL, '3', '#' }, // 0x20\r | |
62 | { SCAN_NULL, '4', '$' }, // 0x21\r | |
63 | { SCAN_NULL, '5', '%' }, // 0x22\r | |
64 | { SCAN_NULL, '6', '^' }, // 0x23\r | |
65 | { SCAN_NULL, '7', '&' }, // 0x24\r | |
66 | { SCAN_NULL, '8', '*' }, // 0x25\r | |
67 | { SCAN_NULL, '9', '(' }, // 0x26\r | |
68 | { SCAN_NULL, '0', ')' }, // 0x27\r | |
69 | { SCAN_NULL, 0x0d, 0x0d }, // 0x28 Enter\r | |
70 | { SCAN_ESC, 0x00, 0x00 }, // 0x29 Esc\r | |
71 | { SCAN_NULL, 0x08, 0x08 }, // 0x2A Backspace\r | |
72 | { SCAN_NULL, 0x09, 0x09 }, // 0x2B Tab\r | |
73 | { SCAN_NULL, ' ', ' ' }, // 0x2C Spacebar\r | |
74 | { SCAN_NULL, '-', '_' }, // 0x2D\r | |
75 | { SCAN_NULL, '=', '+' }, // 0x2E\r | |
76 | { SCAN_NULL, '[', '{' }, // 0x2F\r | |
77 | { SCAN_NULL, ']', '}' }, // 0x30\r | |
78 | { SCAN_NULL, '\\', '|' }, // 0x31\r | |
79 | { SCAN_NULL, '\\', '|' }, // 0x32 Keyboard US \ and |\r | |
80 | { SCAN_NULL, ';', ':' }, // 0x33\r | |
81 | { SCAN_NULL, '\'', '"' }, // 0x34\r | |
82 | { SCAN_NULL, '`', '~' }, // 0x35 Keyboard Grave Accent and Tlide\r | |
83 | { SCAN_NULL, ',', '<' }, // 0x36\r | |
84 | { SCAN_NULL, '.', '>' }, // 0x37\r | |
85 | { SCAN_NULL, '/', '?' }, // 0x38\r | |
86 | { SCAN_NULL, 0x00, 0x00 }, // 0x39 CapsLock\r | |
87 | { SCAN_F1, 0x00, 0x00 }, // 0x3A\r | |
88 | { SCAN_F2, 0x00, 0x00 }, // 0x3B\r | |
89 | { SCAN_F3, 0x00, 0x00 }, // 0x3C\r | |
90 | { SCAN_F4, 0x00, 0x00 }, // 0x3D\r | |
91 | { SCAN_F5, 0x00, 0x00 }, // 0x3E\r | |
92 | { SCAN_F6, 0x00, 0x00 }, // 0x3F\r | |
93 | { SCAN_F7, 0x00, 0x00 }, // 0x40\r | |
94 | { SCAN_F8, 0x00, 0x00 }, // 0x41\r | |
95 | { SCAN_F9, 0x00, 0x00 }, // 0x42\r | |
96 | { SCAN_F10, 0x00, 0x00 }, // 0x43\r | |
97 | { SCAN_F11, 0x00, 0x00 }, // 0x44 F11\r | |
98 | { SCAN_F12, 0x00, 0x00 }, // 0x45 F12\r | |
99 | { SCAN_NULL, 0x00, 0x00 }, // 0x46 PrintScreen\r | |
100 | { SCAN_NULL, 0x00, 0x00 }, // 0x47 Scroll Lock\r | |
101 | { SCAN_NULL, 0x00, 0x00 }, // 0x48 Pause\r | |
102 | { SCAN_INSERT, 0x00, 0x00 }, // 0x49\r | |
103 | { SCAN_HOME, 0x00, 0x00 }, // 0x4A\r | |
104 | { SCAN_PAGE_UP, 0x00, 0x00 }, // 0x4B\r | |
105 | { SCAN_DELETE, 0x00, 0x00 }, // 0x4C\r | |
106 | { SCAN_END, 0x00, 0x00 }, // 0x4D\r | |
107 | { SCAN_PAGE_DOWN, 0x00, 0x00 }, // 0x4E\r | |
108 | { SCAN_RIGHT, 0x00, 0x00 }, // 0x4F\r | |
109 | { SCAN_LEFT, 0x00, 0x00 }, // 0x50\r | |
110 | { SCAN_DOWN, 0x00, 0x00 }, // 0x51\r | |
111 | { SCAN_UP, 0x00, 0x00 }, // 0x52\r | |
112 | { SCAN_NULL, 0x00, 0x00 }, // 0x53 NumLock\r | |
113 | { SCAN_NULL, '/', '/' }, // 0x54\r | |
114 | { SCAN_NULL, '*', '*' }, // 0x55\r | |
115 | { SCAN_NULL, '-', '-' }, // 0x56\r | |
116 | { SCAN_NULL, '+', '+' }, // 0x57\r | |
117 | { SCAN_NULL, 0x0d, 0x0d }, // 0x58\r | |
118 | { SCAN_END, '1', '1' }, // 0x59\r | |
119 | { SCAN_DOWN, '2', '2' }, // 0x5A\r | |
120 | { SCAN_PAGE_DOWN, '3', '3' }, // 0x5B\r | |
121 | { SCAN_LEFT, '4', '4' }, // 0x5C\r | |
122 | { SCAN_NULL, '5', '5' }, // 0x5D\r | |
123 | { SCAN_RIGHT, '6', '6' }, // 0x5E\r | |
124 | { SCAN_HOME, '7', '7' }, // 0x5F\r | |
125 | { SCAN_UP, '8', '8' }, // 0x60\r | |
126 | { SCAN_PAGE_UP, '9', '9' }, // 0x61\r | |
127 | { SCAN_INSERT, '0', '0' }, // 0x62\r | |
128 | { SCAN_DELETE, '.', '.' }, // 0x63\r | |
129 | { SCAN_NULL, '\\', '|' }, // 0x64 Keyboard Non-US \ and |\r | |
130 | { SCAN_NULL, 0x00, 0x00 }, // 0x65 Keyboard Application\r | |
131 | { SCAN_NULL, 0x00, 0x00 }, // 0x66 Keyboard Power\r | |
132 | { SCAN_NULL, '=' , '=' } // 0x67 Keypad =\r | |
133 | };\r | |
134 | \r | |
135 | STATIC KB_MODIFIER KB_Mod[8] = {\r | |
136 | { MOD_CONTROL_L, 0xe0 }, // 11100000\r | |
137 | { MOD_CONTROL_R, 0xe4 }, // 11100100\r | |
138 | { MOD_SHIFT_L, 0xe1 }, // 11100001\r | |
139 | { MOD_SHIFT_R, 0xe5 }, // 11100101\r | |
140 | { MOD_ALT_L, 0xe2 }, // 11100010\r | |
141 | { MOD_ALT_R, 0xe6 }, // 11100110\r | |
142 | { MOD_WIN_L, 0xe3 }, // 11100011\r | |
143 | { MOD_WIN_R, 0xe7 } // 11100111\r | |
144 | };\r | |
145 | \r | |
146 | \r | |
147 | \r | |
148 | /**\r | |
149 | Uses USB I/O to check whether the device is a USB Keyboard device.\r | |
150 | \r | |
151 | UsbIo: Points to a USB I/O protocol instance.\r | |
152 | \r | |
153 | \r | |
154 | **/\r | |
155 | BOOLEAN\r | |
156 | IsUSBKeyboard (\r | |
157 | IN EFI_USB_IO_PROTOCOL *UsbIo\r | |
158 | )\r | |
159 | {\r | |
160 | EFI_STATUS Status;\r | |
161 | EFI_USB_INTERFACE_DESCRIPTOR InterfaceDescriptor;\r | |
162 | \r | |
163 | //\r | |
164 | // Get the Default interface descriptor, currently we\r | |
165 | // assume it is interface 1\r | |
166 | //\r | |
167 | Status = UsbIo->UsbGetInterfaceDescriptor (\r | |
168 | UsbIo,\r | |
169 | &InterfaceDescriptor\r | |
170 | );\r | |
171 | \r | |
172 | if (EFI_ERROR (Status)) {\r | |
173 | return FALSE;\r | |
174 | }\r | |
175 | \r | |
176 | if (InterfaceDescriptor.InterfaceClass == CLASS_HID &&\r | |
177 | InterfaceDescriptor.InterfaceSubClass == SUBCLASS_BOOT &&\r | |
178 | InterfaceDescriptor.InterfaceProtocol == PROTOCOL_KEYBOARD\r | |
179 | ) {\r | |
180 | \r | |
181 | return TRUE;\r | |
182 | }\r | |
183 | \r | |
184 | return FALSE;\r | |
185 | }\r | |
186 | \r | |
187 | \r | |
188 | \r | |
189 | /**\r | |
190 | Initialize USB Keyboard device and all private data structures.\r | |
191 | \r | |
192 | UsbKeyboardDevice The USB_KB_DEV instance.\r | |
193 | \r | |
194 | @retval EFI_SUCCESS Success\r | |
195 | @retval EFI_DEVICE_ERROR Hardware Error\r | |
196 | \r | |
197 | **/\r | |
198 | EFI_STATUS\r | |
199 | InitUSBKeyboard (\r | |
200 | IN USB_KB_DEV *UsbKeyboardDevice\r | |
201 | )\r | |
202 | {\r | |
203 | UINT8 ConfigValue;\r | |
204 | UINT8 Protocol;\r | |
205 | UINT8 ReportId;\r | |
206 | UINT8 Duration;\r | |
207 | EFI_STATUS Status;\r | |
208 | UINT32 TransferResult;\r | |
209 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
210 | \r | |
211 | UsbIo = UsbKeyboardDevice->UsbIo;\r | |
212 | \r | |
213 | KbdReportStatusCode (\r | |
214 | UsbKeyboardDevice->DevicePath,\r | |
215 | EFI_PROGRESS_CODE,\r | |
216 | PcdGet32 (PcdStatusCodeValueKeyboardSelfTest)\r | |
217 | );\r | |
218 | \r | |
219 | InitUSBKeyBuffer (&(UsbKeyboardDevice->KeyboardBuffer));\r | |
220 | \r | |
221 | //\r | |
222 | // default configurations\r | |
223 | //\r | |
224 | ConfigValue = 0x01;\r | |
225 | \r | |
226 | //\r | |
227 | // Uses default configuration to configure the USB Keyboard device.\r | |
228 | //\r | |
229 | Status = UsbSetConfiguration (\r | |
230 | UsbKeyboardDevice->UsbIo,\r | |
231 | (UINT16) ConfigValue,\r | |
232 | &TransferResult\r | |
233 | );\r | |
234 | if (EFI_ERROR (Status)) {\r | |
235 | //\r | |
236 | // If configuration could not be set here, it means\r | |
237 | // the keyboard interface has some errors and could\r | |
238 | // not be initialized\r | |
239 | //\r | |
240 | KbdReportStatusCode (\r | |
241 | UsbKeyboardDevice->DevicePath,\r | |
242 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
243 | PcdGet32 (PcdStatusCodeValueKeyboardInterfaceError)\r | |
244 | );\r | |
245 | \r | |
246 | return EFI_DEVICE_ERROR;\r | |
247 | }\r | |
248 | \r | |
249 | UsbGetProtocolRequest (\r | |
250 | UsbKeyboardDevice->UsbIo,\r | |
251 | UsbKeyboardDevice->InterfaceDescriptor.InterfaceNumber,\r | |
252 | &Protocol\r | |
253 | );\r | |
254 | //\r | |
255 | // Sets boot protocol for the USB Keyboard.\r | |
256 | // This driver only supports boot protocol.\r | |
257 | // !!BugBug: How about the device that does not support boot protocol?\r | |
258 | //\r | |
259 | if (Protocol != BOOT_PROTOCOL) {\r | |
260 | UsbSetProtocolRequest (\r | |
261 | UsbKeyboardDevice->UsbIo,\r | |
262 | UsbKeyboardDevice->InterfaceDescriptor.InterfaceNumber,\r | |
263 | BOOT_PROTOCOL\r | |
264 | );\r | |
265 | }\r | |
266 | //\r | |
267 | // the duration is indefinite, so the endpoint will inhibit reporting forever,\r | |
268 | // and only reporting when a change is detected in the report data.\r | |
269 | //\r | |
270 | \r | |
271 | //\r | |
272 | // idle value for all report ID\r | |
273 | //\r | |
274 | ReportId = 0;\r | |
275 | //\r | |
276 | // idle forever until there is a key pressed and released.\r | |
277 | //\r | |
278 | Duration = 0;\r | |
279 | UsbSetIdleRequest (\r | |
280 | UsbKeyboardDevice->UsbIo,\r | |
281 | UsbKeyboardDevice->InterfaceDescriptor.InterfaceNumber,\r | |
282 | ReportId,\r | |
283 | Duration\r | |
284 | );\r | |
285 | \r | |
286 | UsbKeyboardDevice->CtrlOn = 0;\r | |
287 | UsbKeyboardDevice->AltOn = 0;\r | |
288 | UsbKeyboardDevice->ShiftOn = 0;\r | |
289 | UsbKeyboardDevice->NumLockOn = 0;\r | |
290 | UsbKeyboardDevice->CapsOn = 0;\r | |
291 | UsbKeyboardDevice->ScrollOn = 0;\r | |
292 | \r | |
293 | //\r | |
294 | // Sync the initial state of lights\r | |
295 | //\r | |
296 | SetKeyLED (UsbKeyboardDevice);\r | |
297 | \r | |
298 | ZeroMem (UsbKeyboardDevice->LastKeyCodeArray, sizeof (UINT8) * 8);\r | |
299 | \r | |
300 | //\r | |
301 | // Set a timer for repeat keys' generation.\r | |
302 | //\r | |
303 | if (UsbKeyboardDevice->RepeatTimer) {\r | |
304 | gBS->CloseEvent (UsbKeyboardDevice->RepeatTimer);\r | |
305 | UsbKeyboardDevice->RepeatTimer = 0;\r | |
306 | }\r | |
307 | \r | |
308 | Status = gBS->CreateEvent (\r | |
309 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
310 | TPL_NOTIFY,\r | |
311 | USBKeyboardRepeatHandler,\r | |
312 | UsbKeyboardDevice,\r | |
313 | &UsbKeyboardDevice->RepeatTimer\r | |
314 | );\r | |
315 | \r | |
316 | if (UsbKeyboardDevice->DelayedRecoveryEvent) {\r | |
317 | gBS->CloseEvent (UsbKeyboardDevice->DelayedRecoveryEvent);\r | |
318 | UsbKeyboardDevice->DelayedRecoveryEvent = 0;\r | |
319 | }\r | |
320 | \r | |
321 | Status = gBS->CreateEvent (\r | |
322 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
323 | TPL_NOTIFY,\r | |
324 | USBKeyboardRecoveryHandler,\r | |
325 | UsbKeyboardDevice,\r | |
326 | &UsbKeyboardDevice->DelayedRecoveryEvent\r | |
327 | );\r | |
328 | \r | |
329 | return EFI_SUCCESS;\r | |
330 | }\r | |
331 | \r | |
332 | \r | |
333 | /**\r | |
334 | Handler function for USB Keyboard's asynchronous interrupt transfer.\r | |
335 | \r | |
336 | Data A pointer to a buffer that is filled with key data which is\r | |
337 | retrieved via asynchronous interrupt transfer.\r | |
338 | DataLength Indicates the size of the data buffer.\r | |
339 | Context Pointing to USB_KB_DEV instance.\r | |
340 | Result Indicates the result of the asynchronous interrupt transfer.\r | |
341 | \r | |
342 | @retval EFI_SUCCESS Success\r | |
343 | @retval EFI_DEVICE_ERROR Hardware Error\r | |
344 | \r | |
345 | **/\r | |
346 | EFI_STATUS\r | |
347 | EFIAPI\r | |
348 | KeyboardHandler (\r | |
349 | IN VOID *Data,\r | |
350 | IN UINTN DataLength,\r | |
351 | IN VOID *Context,\r | |
352 | IN UINT32 Result\r | |
353 | )\r | |
354 | {\r | |
355 | USB_KB_DEV *UsbKeyboardDevice;\r | |
356 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
357 | UINT8 *CurKeyCodeBuffer;\r | |
358 | UINT8 *OldKeyCodeBuffer;\r | |
359 | UINT8 CurModifierMap;\r | |
360 | UINT8 OldModifierMap;\r | |
361 | UINT8 Index;\r | |
362 | UINT8 Index2;\r | |
363 | BOOLEAN Down;\r | |
364 | EFI_STATUS Status;\r | |
365 | BOOLEAN KeyRelease;\r | |
366 | BOOLEAN KeyPress;\r | |
367 | UINT8 SavedTail;\r | |
368 | USB_KEY UsbKey;\r | |
369 | UINT8 NewRepeatKey;\r | |
370 | UINT32 UsbStatus;\r | |
371 | UINT8 *DataPtr;\r | |
372 | \r | |
373 | ASSERT (Context);\r | |
374 | \r | |
375 | NewRepeatKey = 0;\r | |
376 | DataPtr = (UINT8 *) Data;\r | |
377 | UsbKeyboardDevice = (USB_KB_DEV *) Context;\r | |
378 | UsbIo = UsbKeyboardDevice->UsbIo;\r | |
379 | \r | |
380 | //\r | |
381 | // Analyzes the Result and performs corresponding action.\r | |
382 | //\r | |
383 | if (Result != EFI_USB_NOERROR) {\r | |
384 | //\r | |
385 | // Some errors happen during the process\r | |
386 | //\r | |
387 | KbdReportStatusCode (\r | |
388 | UsbKeyboardDevice->DevicePath,\r | |
389 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
390 | PcdGet32 (PcdStatusCodeValueKeyboardInputError)\r | |
391 | );\r | |
392 | \r | |
393 | //\r | |
394 | // stop the repeat key generation if any\r | |
395 | //\r | |
396 | UsbKeyboardDevice->RepeatKey = 0;\r | |
397 | \r | |
398 | gBS->SetTimer (\r | |
399 | UsbKeyboardDevice->RepeatTimer,\r | |
400 | TimerCancel,\r | |
401 | USBKBD_REPEAT_RATE\r | |
402 | );\r | |
403 | \r | |
404 | if ((Result & EFI_USB_ERR_STALL) == EFI_USB_ERR_STALL) {\r | |
405 | UsbClearEndpointHalt (\r | |
406 | UsbIo,\r | |
407 | UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress,\r | |
408 | &UsbStatus\r | |
409 | );\r | |
410 | }\r | |
411 | \r | |
412 | //\r | |
413 | // Delete & Submit this interrupt again\r | |
414 | //\r | |
415 | \r | |
416 | Status = UsbIo->UsbAsyncInterruptTransfer (\r | |
417 | UsbIo,\r | |
418 | UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress,\r | |
419 | FALSE,\r | |
420 | 0,\r | |
421 | 0,\r | |
422 | NULL,\r | |
423 | NULL\r | |
424 | );\r | |
425 | \r | |
426 | gBS->SetTimer (\r | |
427 | UsbKeyboardDevice->DelayedRecoveryEvent,\r | |
428 | TimerRelative,\r | |
429 | EFI_USB_INTERRUPT_DELAY\r | |
430 | );\r | |
431 | \r | |
432 | return EFI_DEVICE_ERROR;\r | |
433 | }\r | |
434 | \r | |
435 | if (DataLength == 0 || Data == NULL) {\r | |
436 | return EFI_SUCCESS;\r | |
437 | }\r | |
438 | \r | |
439 | CurKeyCodeBuffer = (UINT8 *) Data;\r | |
440 | OldKeyCodeBuffer = UsbKeyboardDevice->LastKeyCodeArray;\r | |
441 | \r | |
442 | //\r | |
443 | // checks for new key stroke.\r | |
444 | // if no new key got, return immediately.\r | |
445 | //\r | |
446 | for (Index = 0; Index < 8; Index++) {\r | |
447 | if (OldKeyCodeBuffer[Index] != CurKeyCodeBuffer[Index]) {\r | |
448 | break;\r | |
449 | }\r | |
450 | }\r | |
451 | \r | |
452 | if (Index == 8) {\r | |
453 | return EFI_SUCCESS;\r | |
454 | }\r | |
455 | \r | |
456 | //\r | |
457 | // Parse the modifier key\r | |
458 | //\r | |
459 | CurModifierMap = CurKeyCodeBuffer[0];\r | |
460 | OldModifierMap = OldKeyCodeBuffer[0];\r | |
461 | \r | |
462 | //\r | |
463 | // handle modifier key's pressing or releasing situation.\r | |
464 | //\r | |
465 | for (Index = 0; Index < 8; Index++) {\r | |
466 | \r | |
467 | if ((CurModifierMap & KB_Mod[Index].Mask) != (OldModifierMap & KB_Mod[Index].Mask)) {\r | |
468 | //\r | |
469 | // if current modifier key is up, then\r | |
470 | // CurModifierMap & KB_Mod[Index].Mask = 0;\r | |
471 | // otherwize it is a non-zero value.\r | |
472 | // Inserts the pressed modifier key into key buffer.\r | |
473 | //\r | |
474 | Down = (UINT8) (CurModifierMap & KB_Mod[Index].Mask);\r | |
475 | InsertKeyCode (&(UsbKeyboardDevice->KeyboardBuffer), KB_Mod[Index].Key, Down);\r | |
476 | }\r | |
477 | }\r | |
478 | \r | |
479 | //\r | |
480 | // handle normal key's releasing situation\r | |
481 | //\r | |
482 | KeyRelease = FALSE;\r | |
483 | for (Index = 2; Index < 8; Index++) {\r | |
484 | \r | |
485 | if (!USBKBD_VALID_KEYCODE (OldKeyCodeBuffer[Index])) {\r | |
486 | continue;\r | |
487 | }\r | |
488 | \r | |
489 | KeyRelease = TRUE;\r | |
490 | for (Index2 = 2; Index2 < 8; Index2++) {\r | |
491 | \r | |
492 | if (!USBKBD_VALID_KEYCODE (CurKeyCodeBuffer[Index2])) {\r | |
493 | continue;\r | |
494 | }\r | |
495 | \r | |
496 | if (OldKeyCodeBuffer[Index] == CurKeyCodeBuffer[Index2]) {\r | |
497 | KeyRelease = FALSE;\r | |
498 | break;\r | |
499 | }\r | |
500 | }\r | |
501 | \r | |
502 | if (KeyRelease) {\r | |
503 | InsertKeyCode (\r | |
504 | &(UsbKeyboardDevice->KeyboardBuffer),\r | |
505 | OldKeyCodeBuffer[Index],\r | |
506 | 0\r | |
507 | );\r | |
508 | //\r | |
509 | // the original reapeat key is released.\r | |
510 | //\r | |
511 | if (OldKeyCodeBuffer[Index] == UsbKeyboardDevice->RepeatKey) {\r | |
512 | UsbKeyboardDevice->RepeatKey = 0;\r | |
513 | }\r | |
514 | }\r | |
515 | }\r | |
516 | \r | |
517 | //\r | |
518 | // original repeat key is released, cancel the repeat timer\r | |
519 | //\r | |
520 | if (UsbKeyboardDevice->RepeatKey == 0) {\r | |
521 | gBS->SetTimer (\r | |
522 | UsbKeyboardDevice->RepeatTimer,\r | |
523 | TimerCancel,\r | |
524 | USBKBD_REPEAT_RATE\r | |
525 | );\r | |
526 | }\r | |
527 | \r | |
528 | //\r | |
529 | // handle normal key's pressing situation\r | |
530 | //\r | |
531 | KeyPress = FALSE;\r | |
532 | for (Index = 2; Index < 8; Index++) {\r | |
533 | \r | |
534 | if (!USBKBD_VALID_KEYCODE (CurKeyCodeBuffer[Index])) {\r | |
535 | continue;\r | |
536 | }\r | |
537 | \r | |
538 | KeyPress = TRUE;\r | |
539 | for (Index2 = 2; Index2 < 8; Index2++) {\r | |
540 | \r | |
541 | if (!USBKBD_VALID_KEYCODE (OldKeyCodeBuffer[Index2])) {\r | |
542 | continue;\r | |
543 | }\r | |
544 | \r | |
545 | if (CurKeyCodeBuffer[Index] == OldKeyCodeBuffer[Index2]) {\r | |
546 | KeyPress = FALSE;\r | |
547 | break;\r | |
548 | }\r | |
549 | }\r | |
550 | \r | |
551 | if (KeyPress) {\r | |
552 | InsertKeyCode (&(UsbKeyboardDevice->KeyboardBuffer), CurKeyCodeBuffer[Index], 1);\r | |
553 | //\r | |
554 | // NumLock pressed or CapsLock pressed\r | |
555 | //\r | |
556 | if (CurKeyCodeBuffer[Index] == 0x53 || CurKeyCodeBuffer[Index] == 0x39) {\r | |
557 | UsbKeyboardDevice->RepeatKey = 0;\r | |
558 | } else {\r | |
559 | NewRepeatKey = CurKeyCodeBuffer[Index];\r | |
560 | //\r | |
561 | // do not repeat the original repeated key\r | |
562 | //\r | |
563 | UsbKeyboardDevice->RepeatKey = 0;\r | |
564 | }\r | |
565 | }\r | |
566 | }\r | |
567 | \r | |
568 | //\r | |
569 | // Update LastKeycodeArray[] buffer in the\r | |
570 | // Usb Keyboard Device data structure.\r | |
571 | //\r | |
572 | for (Index = 0; Index < 8; Index++) {\r | |
573 | UsbKeyboardDevice->LastKeyCodeArray[Index] = CurKeyCodeBuffer[Index];\r | |
574 | }\r | |
575 | \r | |
576 | //\r | |
577 | // pre-process KeyboardBuffer, pop out the ctrl,alt,del key in sequence\r | |
578 | // and judge whether it will invoke reset event.\r | |
579 | //\r | |
580 | SavedTail = UsbKeyboardDevice->KeyboardBuffer.bTail;\r | |
581 | Index = UsbKeyboardDevice->KeyboardBuffer.bHead;\r | |
582 | while (Index != SavedTail) {\r | |
583 | RemoveKeyCode (&(UsbKeyboardDevice->KeyboardBuffer), &UsbKey);\r | |
584 | \r | |
585 | switch (UsbKey.KeyCode) {\r | |
586 | \r | |
587 | case 0xe0:\r | |
588 | case 0xe4:\r | |
589 | if (UsbKey.Down) {\r | |
590 | UsbKeyboardDevice->CtrlOn = 1;\r | |
591 | } else {\r | |
592 | UsbKeyboardDevice->CtrlOn = 0;\r | |
593 | }\r | |
594 | break;\r | |
595 | \r | |
596 | case 0xe2:\r | |
597 | case 0xe6:\r | |
598 | if (UsbKey.Down) {\r | |
599 | UsbKeyboardDevice->AltOn = 1;\r | |
600 | } else {\r | |
601 | UsbKeyboardDevice->AltOn = 0;\r | |
602 | }\r | |
603 | break;\r | |
604 | \r | |
605 | //\r | |
606 | // Del Key Code\r | |
607 | //\r | |
608 | case 0x4c:\r | |
609 | case 0x63:\r | |
610 | if (UsbKey.Down) {\r | |
611 | if (UsbKeyboardDevice->CtrlOn && UsbKeyboardDevice->AltOn) {\r | |
612 | gRT->ResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);\r | |
613 | }\r | |
614 | }\r | |
615 | break;\r | |
616 | \r | |
617 | default:\r | |
618 | break;\r | |
619 | }\r | |
620 | \r | |
621 | //\r | |
622 | // insert the key back to the buffer.\r | |
623 | // so the key sequence will not be destroyed.\r | |
624 | //\r | |
625 | InsertKeyCode (\r | |
626 | &(UsbKeyboardDevice->KeyboardBuffer),\r | |
627 | UsbKey.KeyCode,\r | |
628 | UsbKey.Down\r | |
629 | );\r | |
630 | Index = UsbKeyboardDevice->KeyboardBuffer.bHead;\r | |
631 | \r | |
632 | }\r | |
633 | //\r | |
634 | // If have new key pressed, update the RepeatKey value, and set the\r | |
635 | // timer to repeate delay timer\r | |
636 | //\r | |
637 | if (NewRepeatKey != 0) {\r | |
638 | //\r | |
639 | // sets trigger time to "Repeat Delay Time",\r | |
640 | // to trigger the repeat timer when the key is hold long\r | |
641 | // enough time.\r | |
642 | //\r | |
643 | gBS->SetTimer (\r | |
644 | UsbKeyboardDevice->RepeatTimer,\r | |
645 | TimerRelative,\r | |
646 | USBKBD_REPEAT_DELAY\r | |
647 | );\r | |
648 | UsbKeyboardDevice->RepeatKey = NewRepeatKey;\r | |
649 | }\r | |
650 | \r | |
651 | return EFI_SUCCESS;\r | |
652 | }\r | |
653 | \r | |
654 | \r | |
655 | /**\r | |
656 | Retrieves a key character after parsing the raw data in keyboard buffer.\r | |
657 | \r | |
658 | UsbKeyboardDevice The USB_KB_DEV instance.\r | |
659 | KeyChar Points to the Key character after key parsing.\r | |
660 | \r | |
661 | @retval EFI_SUCCESS Success\r | |
662 | @retval EFI_NOT_READY Device is not ready\r | |
663 | \r | |
664 | **/\r | |
665 | EFI_STATUS\r | |
666 | USBParseKey (\r | |
667 | IN OUT USB_KB_DEV *UsbKeyboardDevice,\r | |
668 | OUT UINT8 *KeyChar\r | |
669 | )\r | |
670 | {\r | |
671 | USB_KEY UsbKey;\r | |
672 | \r | |
673 | *KeyChar = 0;\r | |
674 | \r | |
675 | while (!IsUSBKeyboardBufferEmpty (&UsbKeyboardDevice->KeyboardBuffer)) {\r | |
676 | //\r | |
677 | // pops one raw data off.\r | |
678 | //\r | |
679 | RemoveKeyCode (&(UsbKeyboardDevice->KeyboardBuffer), &UsbKey);\r | |
680 | \r | |
681 | if (!UsbKey.Down) {\r | |
682 | switch (UsbKey.KeyCode) {\r | |
683 | \r | |
684 | case 0xe0:\r | |
685 | case 0xe4:\r | |
686 | UsbKeyboardDevice->CtrlOn = 0;\r | |
687 | break;\r | |
688 | \r | |
689 | case 0xe1:\r | |
690 | case 0xe5:\r | |
691 | UsbKeyboardDevice->ShiftOn = 0;\r | |
692 | break;\r | |
693 | \r | |
694 | case 0xe2:\r | |
695 | case 0xe6:\r | |
696 | UsbKeyboardDevice->AltOn = 0;\r | |
697 | break;\r | |
698 | \r | |
699 | default:\r | |
700 | break;\r | |
701 | }\r | |
702 | \r | |
703 | continue;\r | |
704 | }\r | |
705 | \r | |
706 | //\r | |
707 | // Analyzes key pressing situation\r | |
708 | //\r | |
709 | switch (UsbKey.KeyCode) {\r | |
710 | \r | |
711 | case 0xe0:\r | |
712 | case 0xe4:\r | |
713 | UsbKeyboardDevice->CtrlOn = 1;\r | |
714 | continue;\r | |
715 | break;\r | |
716 | \r | |
717 | case 0xe1:\r | |
718 | case 0xe5:\r | |
719 | UsbKeyboardDevice->ShiftOn = 1;\r | |
720 | continue;\r | |
721 | break;\r | |
722 | \r | |
723 | case 0xe2:\r | |
724 | case 0xe6:\r | |
725 | UsbKeyboardDevice->AltOn = 1;\r | |
726 | continue;\r | |
727 | break;\r | |
728 | \r | |
729 | case 0xe3:\r | |
730 | case 0xe7:\r | |
731 | continue;\r | |
732 | break;\r | |
733 | \r | |
734 | case 0x53:\r | |
735 | UsbKeyboardDevice->NumLockOn ^= 1;\r | |
736 | //\r | |
737 | // Turn on the NumLock light on KB\r | |
738 | //\r | |
739 | SetKeyLED (UsbKeyboardDevice);\r | |
740 | continue;\r | |
741 | break;\r | |
742 | \r | |
743 | case 0x39:\r | |
744 | UsbKeyboardDevice->CapsOn ^= 1;\r | |
745 | //\r | |
746 | // Turn on the CapsLock light on KB\r | |
747 | //\r | |
748 | SetKeyLED (UsbKeyboardDevice);\r | |
749 | continue;\r | |
750 | break;\r | |
751 | \r | |
752 | case 0x47:\r | |
753 | UsbKeyboardDevice->ScrollOn ^= 1;\r | |
754 | //\r | |
755 | // Turn on the ScrollLock light on KB\r | |
756 | //\r | |
757 | SetKeyLED (UsbKeyboardDevice);\r | |
758 | continue;\r | |
759 | break;\r | |
760 | \r | |
761 | //\r | |
762 | // PrintScreen,Pause,Application,Power\r | |
763 | // keys are not valid EFI key\r | |
764 | //\r | |
765 | \r | |
766 | case 0x46:\r | |
767 | //\r | |
768 | // fall through\r | |
769 | //\r | |
770 | case 0x48:\r | |
771 | //\r | |
772 | // fall through\r | |
773 | //\r | |
774 | case 0x65:\r | |
775 | //\r | |
776 | // fall through\r | |
777 | //\r | |
778 | case 0x66:\r | |
779 | //\r | |
780 | // fall through\r | |
781 | //\r | |
782 | continue;\r | |
783 | break;\r | |
784 | \r | |
785 | default:\r | |
786 | break;\r | |
787 | }\r | |
788 | \r | |
789 | //\r | |
790 | // When encountered Del Key...\r | |
791 | //\r | |
792 | if (UsbKey.KeyCode == 0x4c || UsbKey.KeyCode == 0x63) {\r | |
793 | if (UsbKeyboardDevice->CtrlOn && UsbKeyboardDevice->AltOn) {\r | |
794 | gRT->ResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);\r | |
795 | }\r | |
796 | }\r | |
797 | \r | |
798 | *KeyChar = UsbKey.KeyCode;\r | |
799 | return EFI_SUCCESS;\r | |
800 | }\r | |
801 | \r | |
802 | return EFI_NOT_READY;\r | |
803 | \r | |
804 | }\r | |
805 | \r | |
806 | \r | |
807 | \r | |
808 | /**\r | |
809 | Converts USB Keyboard code to EFI Scan Code.\r | |
810 | \r | |
811 | UsbKeyboardDevice The USB_KB_DEV instance.\r | |
812 | KeyChar Indicates the key code that will be interpreted.\r | |
813 | Key A pointer to a buffer that is filled in with\r | |
814 | the keystroke information for the key that\r | |
815 | was pressed.\r | |
816 | \r | |
817 | @retval EFI_NOT_READY Device is not ready\r | |
818 | @retval EFI_SUCCESS Success\r | |
819 | \r | |
820 | **/\r | |
821 | EFI_STATUS\r | |
822 | USBKeyCodeToEFIScanCode (\r | |
823 | IN USB_KB_DEV *UsbKeyboardDevice,\r | |
824 | IN UINT8 KeyChar,\r | |
825 | OUT EFI_INPUT_KEY *Key\r | |
826 | )\r | |
827 | {\r | |
828 | UINT8 Index;\r | |
829 | \r | |
830 | if (!USBKBD_VALID_KEYCODE (KeyChar)) {\r | |
831 | return EFI_NOT_READY;\r | |
832 | }\r | |
833 | \r | |
834 | //\r | |
835 | // valid USB Key Code starts from 4\r | |
836 | //\r | |
837 | Index = (UINT8) (KeyChar - 4);\r | |
838 | \r | |
839 | if (Index >= USB_KEYCODE_MAX_MAKE) {\r | |
840 | return EFI_NOT_READY;\r | |
841 | }\r | |
842 | \r | |
843 | Key->ScanCode = KeyConvertionTable[Index][0];\r | |
844 | \r | |
845 | if (UsbKeyboardDevice->ShiftOn) {\r | |
846 | \r | |
847 | Key->UnicodeChar = KeyConvertionTable[Index][2];\r | |
848 | \r | |
849 | } else {\r | |
850 | \r | |
851 | Key->UnicodeChar = KeyConvertionTable[Index][1];\r | |
852 | }\r | |
853 | \r | |
854 | if (UsbKeyboardDevice->CapsOn) {\r | |
855 | \r | |
856 | if (Key->UnicodeChar >= 'a' && Key->UnicodeChar <= 'z') {\r | |
857 | \r | |
858 | Key->UnicodeChar = KeyConvertionTable[Index][2];\r | |
859 | \r | |
860 | } else if (Key->UnicodeChar >= 'A' && Key->UnicodeChar <= 'Z') {\r | |
861 | \r | |
862 | Key->UnicodeChar = KeyConvertionTable[Index][1];\r | |
863 | \r | |
864 | }\r | |
865 | }\r | |
866 | \r | |
867 | if (KeyChar >= 0x59 && KeyChar <= 0x63) {\r | |
868 | \r | |
869 | if (UsbKeyboardDevice->NumLockOn && !UsbKeyboardDevice->ShiftOn) {\r | |
870 | \r | |
871 | Key->ScanCode = SCAN_NULL;\r | |
872 | \r | |
873 | } else {\r | |
874 | \r | |
875 | Key->UnicodeChar = 0x00;\r | |
876 | }\r | |
877 | }\r | |
878 | \r | |
879 | if (Key->UnicodeChar == 0 && Key->ScanCode == SCAN_NULL) {\r | |
880 | return EFI_NOT_READY;\r | |
881 | }\r | |
882 | \r | |
883 | return EFI_SUCCESS;\r | |
884 | \r | |
885 | }\r | |
886 | \r | |
887 | \r | |
888 | \r | |
889 | /**\r | |
890 | Resets USB Keyboard Buffer.\r | |
891 | \r | |
892 | @param KeyboardBuffer Points to the USB Keyboard Buffer.\r | |
893 | \r | |
894 | @retval EFI_SUCCESS Success\r | |
895 | \r | |
896 | **/\r | |
897 | EFI_STATUS\r | |
898 | InitUSBKeyBuffer (\r | |
899 | IN OUT USB_KB_BUFFER *KeyboardBuffer\r | |
900 | )\r | |
901 | {\r | |
902 | ZeroMem (KeyboardBuffer, sizeof (USB_KB_BUFFER));\r | |
903 | \r | |
904 | KeyboardBuffer->bHead = KeyboardBuffer->bTail;\r | |
905 | \r | |
906 | return EFI_SUCCESS;\r | |
907 | }\r | |
908 | \r | |
909 | \r | |
910 | /**\r | |
911 | Check whether USB Keyboard buffer is empty.\r | |
912 | \r | |
913 | @param KeyboardBuffer USB Keyboard Buffer.\r | |
914 | \r | |
915 | \r | |
916 | **/\r | |
917 | BOOLEAN\r | |
918 | IsUSBKeyboardBufferEmpty (\r | |
919 | IN USB_KB_BUFFER *KeyboardBuffer\r | |
920 | )\r | |
921 | {\r | |
922 | //\r | |
923 | // meet FIFO empty condition\r | |
924 | //\r | |
925 | return (BOOLEAN) (KeyboardBuffer->bHead == KeyboardBuffer->bTail);\r | |
926 | }\r | |
927 | \r | |
928 | \r | |
929 | \r | |
930 | /**\r | |
931 | Check whether USB Keyboard buffer is full.\r | |
932 | \r | |
933 | @param KeyboardBuffer USB Keyboard Buffer.\r | |
934 | \r | |
935 | \r | |
936 | **/\r | |
937 | BOOLEAN\r | |
938 | IsUSBKeyboardBufferFull (\r | |
939 | IN USB_KB_BUFFER *KeyboardBuffer\r | |
940 | )\r | |
941 | {\r | |
942 | return (BOOLEAN)(((KeyboardBuffer->bTail + 1) % (MAX_KEY_ALLOWED + 1)) ==\r | |
943 | KeyboardBuffer->bHead);\r | |
944 | }\r | |
945 | \r | |
946 | \r | |
947 | \r | |
948 | /**\r | |
949 | Inserts a key code into keyboard buffer.\r | |
950 | \r | |
951 | @param KeyboardBuffer Points to the USB Keyboard Buffer.\r | |
952 | @param Key Key code\r | |
953 | @param Down Special key\r | |
954 | \r | |
955 | @retval EFI_SUCCESS Success\r | |
956 | \r | |
957 | **/\r | |
958 | EFI_STATUS\r | |
959 | InsertKeyCode (\r | |
960 | IN OUT USB_KB_BUFFER *KeyboardBuffer,\r | |
961 | IN UINT8 Key,\r | |
962 | IN UINT8 Down\r | |
963 | )\r | |
964 | {\r | |
965 | USB_KEY UsbKey;\r | |
966 | \r | |
967 | //\r | |
968 | // if keyboard buffer is full, throw the\r | |
969 | // first key out of the keyboard buffer.\r | |
970 | //\r | |
971 | if (IsUSBKeyboardBufferFull (KeyboardBuffer)) {\r | |
972 | RemoveKeyCode (KeyboardBuffer, &UsbKey);\r | |
973 | }\r | |
974 | \r | |
975 | KeyboardBuffer->buffer[KeyboardBuffer->bTail].KeyCode = Key;\r | |
976 | KeyboardBuffer->buffer[KeyboardBuffer->bTail].Down = Down;\r | |
977 | \r | |
978 | //\r | |
979 | // adjust the tail pointer of the FIFO keyboard buffer.\r | |
980 | //\r | |
981 | KeyboardBuffer->bTail = (UINT8) ((KeyboardBuffer->bTail + 1) % (MAX_KEY_ALLOWED + 1));\r | |
982 | \r | |
983 | return EFI_SUCCESS;\r | |
984 | }\r | |
985 | \r | |
986 | \r | |
987 | /**\r | |
988 | Pops a key code off from keyboard buffer.\r | |
989 | \r | |
990 | @param KeyboardBuffer Points to the USB Keyboard Buffer.\r | |
991 | @param UsbKey Points to the buffer that contains a usb key code.\r | |
992 | \r | |
993 | @retval EFI_SUCCESS Success\r | |
994 | @retval EFI_DEVICE_ERROR Hardware Error\r | |
995 | \r | |
996 | **/\r | |
997 | EFI_STATUS\r | |
998 | RemoveKeyCode (\r | |
999 | IN OUT USB_KB_BUFFER *KeyboardBuffer,\r | |
1000 | OUT USB_KEY *UsbKey\r | |
1001 | )\r | |
1002 | {\r | |
1003 | if (IsUSBKeyboardBufferEmpty (KeyboardBuffer)) {\r | |
1004 | return EFI_DEVICE_ERROR;\r | |
1005 | }\r | |
1006 | \r | |
1007 | UsbKey->KeyCode = KeyboardBuffer->buffer[KeyboardBuffer->bHead].KeyCode;\r | |
1008 | UsbKey->Down = KeyboardBuffer->buffer[KeyboardBuffer->bHead].Down;\r | |
1009 | \r | |
1010 | //\r | |
1011 | // adjust the head pointer of the FIFO keyboard buffer.\r | |
1012 | //\r | |
1013 | KeyboardBuffer->bHead = (UINT8) ((KeyboardBuffer->bHead + 1) % (MAX_KEY_ALLOWED + 1));\r | |
1014 | \r | |
1015 | return EFI_SUCCESS;\r | |
1016 | }\r | |
1017 | \r | |
1018 | \r | |
1019 | /**\r | |
1020 | Sets USB Keyboard LED state.\r | |
1021 | \r | |
1022 | @param UsbKeyboardDevice The USB_KB_DEV instance.\r | |
1023 | \r | |
1024 | @retval EFI_SUCCESS Success\r | |
1025 | \r | |
1026 | **/\r | |
1027 | EFI_STATUS\r | |
1028 | SetKeyLED (\r | |
1029 | IN USB_KB_DEV *UsbKeyboardDevice\r | |
1030 | )\r | |
1031 | {\r | |
1032 | LED_MAP Led;\r | |
1033 | UINT8 ReportId;\r | |
1034 | \r | |
1035 | //\r | |
1036 | // Set each field in Led map.\r | |
1037 | //\r | |
1038 | Led.NumLock = (UINT8) UsbKeyboardDevice->NumLockOn;\r | |
1039 | Led.CapsLock = (UINT8) UsbKeyboardDevice->CapsOn;\r | |
1040 | Led.ScrollLock = (UINT8) UsbKeyboardDevice->ScrollOn;\r | |
1041 | Led.Resrvd = 0;\r | |
1042 | \r | |
1043 | ReportId = 0;\r | |
1044 | //\r | |
1045 | // call Set Report Request to lighten the LED.\r | |
1046 | //\r | |
1047 | UsbSetReportRequest (\r | |
1048 | UsbKeyboardDevice->UsbIo,\r | |
1049 | UsbKeyboardDevice->InterfaceDescriptor.InterfaceNumber,\r | |
1050 | ReportId,\r | |
1051 | HID_OUTPUT_REPORT,\r | |
1052 | 1,\r | |
1053 | (UINT8 *) &Led\r | |
1054 | );\r | |
1055 | \r | |
1056 | return EFI_SUCCESS;\r | |
1057 | }\r | |
1058 | \r | |
1059 | \r | |
1060 | /**\r | |
1061 | Timer handler for Repeat Key timer.\r | |
1062 | \r | |
1063 | @param Event The Repeat Key event.\r | |
1064 | @param Context Points to the USB_KB_DEV instance.\r | |
1065 | \r | |
1066 | \r | |
1067 | **/\r | |
1068 | VOID\r | |
1069 | EFIAPI\r | |
1070 | USBKeyboardRepeatHandler (\r | |
1071 | IN EFI_EVENT Event,\r | |
1072 | IN VOID *Context\r | |
1073 | )\r | |
1074 | {\r | |
1075 | USB_KB_DEV *UsbKeyboardDevice;\r | |
1076 | \r | |
1077 | UsbKeyboardDevice = (USB_KB_DEV *) Context;\r | |
1078 | \r | |
1079 | //\r | |
1080 | // Do nothing when there is no repeat key.\r | |
1081 | //\r | |
1082 | if (UsbKeyboardDevice->RepeatKey != 0) {\r | |
1083 | //\r | |
1084 | // Inserts one Repeat key into keyboard buffer,\r | |
1085 | //\r | |
1086 | InsertKeyCode (\r | |
1087 | &(UsbKeyboardDevice->KeyboardBuffer),\r | |
1088 | UsbKeyboardDevice->RepeatKey,\r | |
1089 | 1\r | |
1090 | );\r | |
1091 | \r | |
1092 | //\r | |
1093 | // set repeate rate for repeat key generation.\r | |
1094 | //\r | |
1095 | gBS->SetTimer (\r | |
1096 | UsbKeyboardDevice->RepeatTimer,\r | |
1097 | TimerRelative,\r | |
1098 | USBKBD_REPEAT_RATE\r | |
1099 | );\r | |
1100 | \r | |
1101 | }\r | |
1102 | }\r | |
1103 | \r | |
1104 | \r | |
1105 | /**\r | |
1106 | Timer handler for Delayed Recovery timer.\r | |
1107 | \r | |
1108 | @param Event The Delayed Recovery event.\r | |
1109 | @param Context Points to the USB_KB_DEV instance.\r | |
1110 | \r | |
1111 | \r | |
1112 | **/\r | |
1113 | VOID\r | |
1114 | EFIAPI\r | |
1115 | USBKeyboardRecoveryHandler (\r | |
1116 | IN EFI_EVENT Event,\r | |
1117 | IN VOID *Context\r | |
1118 | )\r | |
1119 | {\r | |
1120 | \r | |
1121 | USB_KB_DEV *UsbKeyboardDevice;\r | |
1122 | EFI_USB_IO_PROTOCOL *UsbIo;\r | |
1123 | UINT8 PacketSize;\r | |
1124 | \r | |
1125 | UsbKeyboardDevice = (USB_KB_DEV *) Context;\r | |
1126 | \r | |
1127 | UsbIo = UsbKeyboardDevice->UsbIo;\r | |
1128 | \r | |
1129 | PacketSize = (UINT8) (UsbKeyboardDevice->IntEndpointDescriptor.MaxPacketSize);\r | |
1130 | \r | |
1131 | UsbIo->UsbAsyncInterruptTransfer (\r | |
1132 | UsbIo,\r | |
1133 | UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress,\r | |
1134 | TRUE,\r | |
1135 | UsbKeyboardDevice->IntEndpointDescriptor.Interval,\r | |
1136 | PacketSize,\r | |
1137 | KeyboardHandler,\r | |
1138 | UsbKeyboardDevice\r | |
1139 | );\r | |
1140 | }\r |