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1 | /*++\r | |
2 | \r | |
3 | Copyright (c) 2006, 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 | WinNtUgaInput.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | This file produces the Simple Text In for an Uga window. \r | |
19 | \r | |
20 | This stuff is linked at the hip to the Window, since the window\r | |
21 | processing is done in a thread kicked off in WinNtUgaImplementation.c\r | |
22 | \r | |
23 | Since the window information is processed in an other thread we need\r | |
24 | a keyboard Queue to pass data about. The Simple Text In code just \r | |
25 | takes data off the Queue. The WinProc message loop takes keyboard input\r | |
26 | and places it in the Queue.\r | |
27 | \r | |
28 | --*/\r | |
29 | \r | |
30 | #include "WinNtUga.h"\r | |
31 | \r | |
32 | EFI_STATUS\r | |
33 | UgaPrivateCreateQ (\r | |
34 | IN UGA_PRIVATE_DATA *Private\r | |
35 | )\r | |
36 | /*++\r | |
37 | \r | |
38 | Routine Description:\r | |
39 | \r | |
40 | TODO: Add function description\r | |
41 | \r | |
42 | Arguments:\r | |
43 | \r | |
44 | Private - TODO: add argument description\r | |
45 | \r | |
46 | Returns:\r | |
47 | \r | |
48 | EFI_SUCCESS - TODO: Add description for return value\r | |
49 | \r | |
50 | --*/\r | |
51 | {\r | |
52 | Private->WinNtThunk->InitializeCriticalSection (&Private->QCriticalSection);\r | |
53 | \r | |
54 | Private->Queue.Front = 0;\r | |
55 | Private->Queue.Rear = MAX_Q - 1;\r | |
56 | Private->Queue.Count = 0;\r | |
57 | return EFI_SUCCESS;\r | |
58 | }\r | |
59 | \r | |
60 | EFI_STATUS\r | |
61 | UgaPrivateDestroyQ (\r | |
62 | IN UGA_PRIVATE_DATA *Private\r | |
63 | )\r | |
64 | /*++\r | |
65 | \r | |
66 | Routine Description:\r | |
67 | \r | |
68 | TODO: Add function description\r | |
69 | \r | |
70 | Arguments:\r | |
71 | \r | |
72 | Private - TODO: add argument description\r | |
73 | \r | |
74 | Returns:\r | |
75 | \r | |
76 | EFI_SUCCESS - TODO: Add description for return value\r | |
77 | \r | |
78 | --*/\r | |
79 | {\r | |
80 | Private->Queue.Count = 0;\r | |
81 | Private->WinNtThunk->DeleteCriticalSection (&Private->QCriticalSection);\r | |
82 | return EFI_SUCCESS;\r | |
83 | }\r | |
84 | \r | |
85 | EFI_STATUS\r | |
86 | UgaPrivateAddQ (\r | |
87 | IN UGA_PRIVATE_DATA *Private,\r | |
88 | IN EFI_INPUT_KEY Key\r | |
89 | )\r | |
90 | /*++\r | |
91 | \r | |
92 | Routine Description:\r | |
93 | \r | |
94 | TODO: Add function description\r | |
95 | \r | |
96 | Arguments:\r | |
97 | \r | |
98 | Private - TODO: add argument description\r | |
99 | Key - TODO: add argument description\r | |
100 | \r | |
101 | Returns:\r | |
102 | \r | |
103 | EFI_NOT_READY - TODO: Add description for return value\r | |
104 | EFI_SUCCESS - TODO: Add description for return value\r | |
105 | \r | |
106 | --*/\r | |
107 | {\r | |
108 | Private->WinNtThunk->EnterCriticalSection (&Private->QCriticalSection);\r | |
109 | \r | |
110 | if (Private->Queue.Count == MAX_Q) {\r | |
111 | Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);\r | |
112 | return EFI_NOT_READY;\r | |
113 | }\r | |
114 | \r | |
115 | Private->Queue.Rear = (Private->Queue.Rear + 1) % MAX_Q;\r | |
116 | Private->Queue.Q[Private->Queue.Rear] = Key;\r | |
117 | Private->Queue.Count++;\r | |
118 | \r | |
119 | Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);\r | |
120 | return EFI_SUCCESS;\r | |
121 | }\r | |
122 | \r | |
123 | EFI_STATUS\r | |
124 | UgaPrivateDeleteQ (\r | |
125 | IN UGA_PRIVATE_DATA *Private,\r | |
126 | OUT EFI_INPUT_KEY *Key\r | |
127 | )\r | |
128 | /*++\r | |
129 | \r | |
130 | Routine Description:\r | |
131 | \r | |
132 | TODO: Add function description\r | |
133 | \r | |
134 | Arguments:\r | |
135 | \r | |
136 | Private - TODO: add argument description\r | |
137 | Key - TODO: add argument description\r | |
138 | \r | |
139 | Returns:\r | |
140 | \r | |
141 | EFI_NOT_READY - TODO: Add description for return value\r | |
142 | EFI_SUCCESS - TODO: Add description for return value\r | |
143 | \r | |
144 | --*/\r | |
145 | {\r | |
146 | Private->WinNtThunk->EnterCriticalSection (&Private->QCriticalSection);\r | |
147 | \r | |
148 | if (Private->Queue.Count == 0) {\r | |
149 | Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);\r | |
150 | return EFI_NOT_READY;\r | |
151 | }\r | |
152 | \r | |
153 | *Key = Private->Queue.Q[Private->Queue.Front];\r | |
154 | Private->Queue.Front = (Private->Queue.Front + 1) % MAX_Q;\r | |
155 | Private->Queue.Count--;\r | |
156 | \r | |
157 | Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);\r | |
158 | return EFI_SUCCESS;\r | |
159 | }\r | |
160 | \r | |
161 | EFI_STATUS\r | |
162 | UgaPrivateCheckQ (\r | |
163 | IN UGA_PRIVATE_DATA *Private\r | |
164 | )\r | |
165 | /*++\r | |
166 | \r | |
167 | Routine Description:\r | |
168 | \r | |
169 | TODO: Add function description\r | |
170 | \r | |
171 | Arguments:\r | |
172 | \r | |
173 | Private - TODO: add argument description\r | |
174 | \r | |
175 | Returns:\r | |
176 | \r | |
177 | EFI_NOT_READY - TODO: Add description for return value\r | |
178 | EFI_SUCCESS - TODO: Add description for return value\r | |
179 | \r | |
180 | --*/\r | |
181 | {\r | |
182 | if (Private->Queue.Count == 0) {\r | |
183 | return EFI_NOT_READY;\r | |
184 | }\r | |
185 | \r | |
186 | return EFI_SUCCESS;\r | |
187 | }\r | |
188 | \r | |
189 | //\r | |
190 | // Simple Text In implementation.\r | |
191 | //\r | |
192 | \r | |
193 | EFI_STATUS\r | |
194 | EFIAPI\r | |
195 | WinNtUgaSimpleTextInReset (\r | |
196 | IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,\r | |
197 | IN BOOLEAN ExtendedVerification\r | |
198 | )\r | |
199 | /*++\r | |
200 | \r | |
201 | Routine Description:\r | |
202 | \r | |
203 | TODO: Add function description\r | |
204 | \r | |
205 | Arguments:\r | |
206 | \r | |
207 | This - TODO: add argument description\r | |
208 | ExtendedVerification - TODO: add argument description\r | |
209 | \r | |
210 | Returns:\r | |
211 | \r | |
212 | EFI_SUCCESS - TODO: Add description for return value\r | |
213 | \r | |
214 | --*/\r | |
215 | {\r | |
216 | UGA_PRIVATE_DATA *Private;\r | |
217 | EFI_INPUT_KEY Key;\r | |
218 | EFI_TPL OldTpl;\r | |
219 | \r | |
220 | Private = UGA_PRIVATE_DATA_FROM_TEXT_IN_THIS (This);\r | |
221 | \r | |
222 | //\r | |
223 | // Enter critical section\r | |
224 | //\r | |
225 | OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r | |
226 | \r | |
227 | //\r | |
228 | // A reset is draining the Queue\r | |
229 | //\r | |
230 | while (UgaPrivateDeleteQ (Private, &Key) == EFI_SUCCESS)\r | |
231 | ;\r | |
232 | \r | |
233 | //\r | |
234 | // Leave critical section and return\r | |
235 | //\r | |
236 | gBS->RestoreTPL (OldTpl);\r | |
237 | return EFI_SUCCESS;\r | |
238 | }\r | |
239 | \r | |
240 | STATIC\r | |
241 | EFI_STATUS\r | |
242 | EFIAPI\r | |
243 | WinNtUgaSimpleTextInReadKeyStroke (\r | |
244 | IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,\r | |
245 | OUT EFI_INPUT_KEY *Key\r | |
246 | )\r | |
247 | /*++\r | |
248 | \r | |
249 | Routine Description:\r | |
250 | \r | |
251 | TODO: Add function description\r | |
252 | \r | |
253 | Arguments:\r | |
254 | \r | |
255 | This - TODO: add argument description\r | |
256 | Key - TODO: add argument description\r | |
257 | \r | |
258 | Returns:\r | |
259 | \r | |
260 | TODO: add return values\r | |
261 | \r | |
262 | --*/\r | |
263 | {\r | |
264 | UGA_PRIVATE_DATA *Private;\r | |
265 | EFI_STATUS Status;\r | |
266 | EFI_TPL OldTpl;\r | |
267 | \r | |
268 | Private = UGA_PRIVATE_DATA_FROM_TEXT_IN_THIS (This);\r | |
269 | \r | |
270 | //\r | |
271 | // Enter critical section\r | |
272 | //\r | |
273 | OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r | |
274 | \r | |
275 | Status = UgaPrivateCheckQ (Private);\r | |
276 | if (!EFI_ERROR (Status)) {\r | |
277 | //\r | |
278 | // If a Key press exists try and read it.\r | |
279 | //\r | |
280 | Status = UgaPrivateDeleteQ (Private, Key);\r | |
281 | }\r | |
282 | \r | |
283 | //\r | |
284 | // Leave critical section and return\r | |
285 | //\r | |
286 | gBS->RestoreTPL (OldTpl);\r | |
287 | \r | |
288 | return Status;\r | |
289 | }\r | |
290 | \r | |
291 | STATIC\r | |
292 | VOID\r | |
293 | EFIAPI\r | |
294 | WinNtUgaSimpleTextInWaitForKey (\r | |
295 | IN EFI_EVENT Event,\r | |
296 | IN VOID *Context\r | |
297 | )\r | |
298 | /*++\r | |
299 | \r | |
300 | Routine Description:\r | |
301 | \r | |
302 | TODO: Add function description\r | |
303 | \r | |
304 | Arguments:\r | |
305 | \r | |
306 | Event - TODO: add argument description\r | |
307 | Context - TODO: add argument description\r | |
308 | \r | |
309 | Returns:\r | |
310 | \r | |
311 | TODO: add return values\r | |
312 | \r | |
313 | --*/\r | |
314 | {\r | |
315 | UGA_PRIVATE_DATA *Private;\r | |
316 | EFI_STATUS Status;\r | |
317 | EFI_TPL OldTpl;\r | |
318 | \r | |
319 | Private = (UGA_PRIVATE_DATA *) Context;\r | |
320 | \r | |
321 | //\r | |
322 | // Enter critical section\r | |
323 | //\r | |
324 | OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r | |
325 | \r | |
326 | Status = UgaPrivateCheckQ (Private);\r | |
327 | if (!EFI_ERROR (Status)) {\r | |
328 | //\r | |
329 | // If a there is a key in the queue signal our event.\r | |
330 | //\r | |
331 | gBS->SignalEvent (Event);\r | |
332 | } else {\r | |
333 | //\r | |
334 | // We need to sleep or NT will schedule this thread with such high\r | |
335 | // priority that WinProc thread will never run and we will not see\r | |
336 | // keyboard input. This Sleep makes the syste run 10x faster, so don't\r | |
337 | // remove it.\r | |
338 | //\r | |
339 | Private->WinNtThunk->Sleep (1);\r | |
340 | }\r | |
341 | \r | |
342 | //\r | |
343 | // Leave critical section and return\r | |
344 | //\r | |
345 | gBS->RestoreTPL (OldTpl);\r | |
346 | }\r | |
347 | \r | |
348 | EFI_STATUS\r | |
349 | WinNtUgaInitializeSimpleTextInForWindow (\r | |
350 | IN UGA_PRIVATE_DATA *Private\r | |
351 | )\r | |
352 | /*++\r | |
353 | \r | |
354 | Routine Description:\r | |
355 | \r | |
356 | TODO: Add function description\r | |
357 | \r | |
358 | Arguments:\r | |
359 | \r | |
360 | Private - TODO: add argument description\r | |
361 | \r | |
362 | Returns:\r | |
363 | \r | |
364 | TODO: add return values\r | |
365 | \r | |
366 | --*/\r | |
367 | {\r | |
368 | EFI_STATUS Status;\r | |
369 | \r | |
370 | UgaPrivateCreateQ (Private);\r | |
371 | \r | |
372 | //\r | |
373 | // Initialize Simple Text In protoocol\r | |
374 | //\r | |
375 | Private->SimpleTextIn.Reset = WinNtUgaSimpleTextInReset;\r | |
376 | Private->SimpleTextIn.ReadKeyStroke = WinNtUgaSimpleTextInReadKeyStroke;\r | |
377 | \r | |
378 | Status = gBS->CreateEvent (\r | |
379 | EFI_EVENT_NOTIFY_WAIT,\r | |
380 | EFI_TPL_NOTIFY,\r | |
381 | WinNtUgaSimpleTextInWaitForKey,\r | |
382 | Private,\r | |
383 | &Private->SimpleTextIn.WaitForKey\r | |
384 | );\r | |
385 | \r | |
386 | return Status;\r | |
387 | }\r | |
388 | \r | |
389 | EFI_STATUS\r | |
390 | WinNtUgaDestroySimpleTextInForWindow (\r | |
391 | IN UGA_PRIVATE_DATA *Private\r | |
392 | )\r | |
393 | /*++\r | |
394 | \r | |
395 | Routine Description:\r | |
396 | \r | |
397 | TODO: Add function description\r | |
398 | \r | |
399 | Arguments:\r | |
400 | \r | |
401 | Private - TODO: add argument description\r | |
402 | \r | |
403 | Returns:\r | |
404 | \r | |
405 | EFI_SUCCESS - TODO: Add description for return value\r | |
406 | \r | |
407 | --*/\r | |
408 | {\r | |
409 | UgaPrivateDestroyQ (Private);\r | |
410 | return EFI_SUCCESS;\r | |
411 | }\r |