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9b6bbcdb MK |
1 | /** @file\r |
2 | This driver is responsible for the registration of child drivers\r | |
3 | and the abstraction of the QNC SMI sources.\r | |
4 | \r | |
4e33ff75 | 5 | Copyright (c) 2013-2017 Intel Corporation.\r |
9b6bbcdb MK |
6 | \r |
7 | This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The 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 | \r | |
18 | //\r | |
19 | // Include common header file for this module.\r | |
20 | //\r | |
21 | #include "CommonHeader.h"\r | |
22 | \r | |
23 | #include "QNCSmm.h"\r | |
24 | #include "QNCSmmHelpers.h"\r | |
25 | \r | |
26 | //\r | |
27 | // /////////////////////////////////////////////////////////////////////////////\r | |
28 | // MODULE / GLOBAL DATA\r | |
29 | //\r | |
30 | // Module variables used by the both the main dispatcher and the source dispatchers\r | |
31 | // Declared in QNCSmmSources.h\r | |
32 | //\r | |
33 | UINT32 mPciData;\r | |
34 | UINT32 mPciAddress;\r | |
35 | \r | |
36 | PRIVATE_DATA mPrivateData = { // for the structure\r | |
37 | {\r | |
38 | NULL\r | |
39 | }, // CallbackDataBase linked list head\r | |
40 | NULL, // Handler returned whan calling SmiHandlerRegister\r | |
41 | NULL, // EFI handle returned when calling InstallMultipleProtocolInterfaces\r | |
42 | { // protocol arrays\r | |
43 | // elements within the array\r | |
44 | //\r | |
45 | {\r | |
46 | PROTOCOL_SIGNATURE,\r | |
47 | SxType,\r | |
48 | &gEfiSmmSxDispatch2ProtocolGuid,\r | |
49 | {\r | |
50 | {\r | |
51 | (QNC_SMM_GENERIC_REGISTER) QNCSmmCoreRegister,\r | |
52 | (QNC_SMM_GENERIC_UNREGISTER) QNCSmmCoreUnRegister\r | |
53 | }\r | |
54 | }\r | |
55 | },\r | |
56 | {\r | |
57 | PROTOCOL_SIGNATURE,\r | |
58 | SwType,\r | |
59 | &gEfiSmmSwDispatch2ProtocolGuid,\r | |
60 | {\r | |
61 | {\r | |
62 | (QNC_SMM_GENERIC_REGISTER) QNCSmmCoreRegister,\r | |
63 | (QNC_SMM_GENERIC_UNREGISTER) QNCSmmCoreUnRegister,\r | |
64 | (UINTN) MAXIMUM_SWI_VALUE\r | |
65 | }\r | |
66 | }\r | |
67 | },\r | |
68 | {\r | |
69 | PROTOCOL_SIGNATURE,\r | |
70 | GpiType,\r | |
71 | &gEfiSmmGpiDispatch2ProtocolGuid,\r | |
72 | {\r | |
73 | {\r | |
74 | (QNC_SMM_GENERIC_REGISTER) QNCSmmCoreRegister,\r | |
75 | (QNC_SMM_GENERIC_UNREGISTER) QNCSmmCoreUnRegister,\r | |
76 | (UINTN) 1\r | |
77 | }\r | |
78 | }\r | |
79 | },\r | |
80 | {\r | |
81 | PROTOCOL_SIGNATURE,\r | |
82 | QNCnType,\r | |
83 | &gEfiSmmIchnDispatch2ProtocolGuid,\r | |
84 | {\r | |
85 | {\r | |
86 | (QNC_SMM_GENERIC_REGISTER) QNCSmmCoreRegister,\r | |
87 | (QNC_SMM_GENERIC_UNREGISTER) QNCSmmCoreUnRegister\r | |
88 | }\r | |
89 | }\r | |
90 | },\r | |
91 | {\r | |
92 | PROTOCOL_SIGNATURE,\r | |
93 | PowerButtonType,\r | |
94 | &gEfiSmmPowerButtonDispatch2ProtocolGuid,\r | |
95 | {\r | |
96 | {\r | |
97 | (QNC_SMM_GENERIC_REGISTER) QNCSmmCoreRegister,\r | |
98 | (QNC_SMM_GENERIC_UNREGISTER) QNCSmmCoreUnRegister\r | |
99 | }\r | |
100 | }\r | |
101 | },\r | |
102 | {\r | |
103 | PROTOCOL_SIGNATURE,\r | |
104 | PeriodicTimerType,\r | |
105 | &gEfiSmmPeriodicTimerDispatch2ProtocolGuid,\r | |
106 | {\r | |
107 | {\r | |
108 | (QNC_SMM_GENERIC_REGISTER) QNCSmmCoreRegister,\r | |
109 | (QNC_SMM_GENERIC_UNREGISTER) QNCSmmCoreUnRegister,\r | |
110 | (UINTN) QNCSmmPeriodicTimerDispatchGetNextShorterInterval\r | |
111 | }\r | |
112 | }\r | |
113 | },\r | |
114 | }\r | |
115 | };\r | |
116 | \r | |
117 | CONTEXT_FUNCTIONS mContextFunctions[NUM_PROTOCOLS] = {\r | |
118 | {\r | |
119 | SxGetContext,\r | |
120 | SxCmpContext,\r | |
121 | NULL\r | |
122 | },\r | |
123 | {\r | |
124 | SwGetContext,\r | |
125 | SwCmpContext,\r | |
126 | SwGetBuffer\r | |
127 | },\r | |
128 | {\r | |
129 | NULL,\r | |
130 | NULL,\r | |
131 | NULL\r | |
132 | },\r | |
133 | {\r | |
134 | NULL,\r | |
135 | NULL,\r | |
136 | NULL\r | |
137 | },\r | |
138 | {\r | |
139 | NULL,\r | |
140 | NULL,\r | |
141 | NULL\r | |
142 | },\r | |
143 | {\r | |
144 | PeriodicTimerGetContext,\r | |
145 | PeriodicTimerCmpContext,\r | |
146 | PeriodicTimerGetBuffer,\r | |
147 | },\r | |
148 | };\r | |
149 | \r | |
150 | //\r | |
151 | // /////////////////////////////////////////////////////////////////////////////\r | |
152 | // PROTOTYPES\r | |
153 | //\r | |
154 | // Functions use only in this file\r | |
155 | //\r | |
156 | EFI_STATUS\r | |
157 | QNCSmmCoreDispatcher (\r | |
158 | IN EFI_HANDLE DispatchHandle,\r | |
159 | IN CONST VOID *Context, OPTIONAL\r | |
160 | IN OUT VOID *CommBuffer, OPTIONAL\r | |
161 | IN OUT UINTN *CommBufferSize OPTIONAL\r | |
162 | );\r | |
163 | \r | |
164 | \r | |
165 | UINTN\r | |
166 | DevicePathSize (\r | |
167 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r | |
168 | );\r | |
169 | \r | |
170 | //\r | |
171 | // /////////////////////////////////////////////////////////////////////////////\r | |
172 | // FUNCTIONS\r | |
173 | //\r | |
174 | // Driver entry point\r | |
175 | //\r | |
176 | EFI_STATUS\r | |
177 | EFIAPI\r | |
178 | InitializeQNCSmmDispatcher (\r | |
179 | IN EFI_HANDLE ImageHandle,\r | |
180 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
181 | )\r | |
182 | /*++\r | |
183 | \r | |
184 | Routine Description:\r | |
185 | \r | |
186 | Initializes the QNC SMM Dispatcher\r | |
187 | \r | |
188 | Arguments:\r | |
189 | \r | |
190 | ImageHandle - Pointer to the loaded image protocol for this driver\r | |
191 | SystemTable - Pointer to the EFI System Table\r | |
192 | \r | |
193 | Returns:\r | |
194 | Status - EFI_SUCCESS\r | |
195 | \r | |
196 | --*/\r | |
197 | {\r | |
198 | EFI_STATUS Status;\r | |
199 | \r | |
200 | QNCSmmPublishDispatchProtocols ();\r | |
201 | \r | |
202 | //\r | |
203 | // Register a callback function to handle subsequent SMIs. This callback\r | |
204 | // will be called by SmmCoreDispatcher.\r | |
205 | //\r | |
206 | Status = gSmst->SmiHandlerRegister (QNCSmmCoreDispatcher, NULL, &mPrivateData.SmiHandle);\r | |
207 | ASSERT_EFI_ERROR (Status);\r | |
208 | \r | |
209 | //\r | |
210 | // Initialize Callback DataBase\r | |
211 | //\r | |
212 | InitializeListHead (&mPrivateData.CallbackDataBase);\r | |
213 | \r | |
214 | //\r | |
215 | // Enable SMIs on the QNC now that we have a callback\r | |
216 | //\r | |
217 | QNCSmmInitHardware ();\r | |
218 | \r | |
219 | return EFI_SUCCESS;\r | |
220 | }\r | |
221 | \r | |
222 | EFI_STATUS\r | |
223 | SaveState (\r | |
224 | VOID\r | |
225 | )\r | |
226 | /*++\r | |
227 | \r | |
228 | Routine Description:\r | |
229 | \r | |
230 | Save Index registers to avoid corrupting the foreground environment\r | |
231 | \r | |
232 | Arguments:\r | |
233 | None\r | |
234 | \r | |
235 | Returns:\r | |
236 | Status - EFI_SUCCESS\r | |
237 | \r | |
238 | --*/\r | |
239 | {\r | |
240 | mPciAddress = IoRead32 (EFI_PCI_ADDRESS_PORT);\r | |
241 | return EFI_SUCCESS;\r | |
242 | }\r | |
243 | \r | |
244 | EFI_STATUS\r | |
245 | RestoreState (\r | |
246 | VOID\r | |
247 | )\r | |
248 | /*++\r | |
249 | \r | |
250 | Routine Description:\r | |
251 | \r | |
252 | Restore Index registers to avoid corrupting the foreground environment\r | |
253 | \r | |
254 | Arguments:\r | |
255 | None\r | |
256 | \r | |
257 | Returns:\r | |
258 | Status - EFI_SUCCESS\r | |
259 | \r | |
260 | --*/\r | |
261 | {\r | |
262 | IoWrite32 (EFI_PCI_ADDRESS_PORT, mPciAddress);\r | |
263 | return EFI_SUCCESS;\r | |
264 | }\r | |
265 | \r | |
266 | EFI_STATUS\r | |
267 | SmiInputValueDuplicateCheck (\r | |
268 | UINTN FedSwSmiInputValue\r | |
269 | )\r | |
270 | /*++\r | |
271 | \r | |
272 | Routine Description:\r | |
273 | \r | |
274 | Check the Fed SwSmiInputValue to see if there is a duplicated one in the database\r | |
275 | \r | |
276 | Arguments:\r | |
277 | None\r | |
278 | \r | |
279 | Returns:\r | |
280 | Status - EFI_SUCCESS, EFI_INVALID_PARAMETER\r | |
281 | \r | |
282 | --*/\r | |
283 | // GC_TODO: FedSwSmiInputValue - add argument and description to function comment\r | |
284 | {\r | |
285 | \r | |
286 | DATABASE_RECORD *RecordInDb;\r | |
287 | LIST_ENTRY *LinkInDb;\r | |
288 | \r | |
289 | LinkInDb = GetFirstNode (&mPrivateData.CallbackDataBase);\r | |
290 | while (!IsNull (&mPrivateData.CallbackDataBase, LinkInDb)) {\r | |
291 | RecordInDb = DATABASE_RECORD_FROM_LINK (LinkInDb);\r | |
292 | \r | |
293 | if (RecordInDb->ProtocolType == SwType) {\r | |
294 | if (RecordInDb->ChildContext.Sw.SwSmiInputValue == FedSwSmiInputValue) {\r | |
295 | return EFI_INVALID_PARAMETER;\r | |
296 | }\r | |
297 | }\r | |
298 | \r | |
299 | LinkInDb = GetNextNode (&mPrivateData.CallbackDataBase, &RecordInDb->Link);\r | |
300 | }\r | |
301 | \r | |
302 | return EFI_SUCCESS;\r | |
303 | }\r | |
304 | \r | |
305 | EFI_STATUS\r | |
306 | QNCSmmCoreRegister (\r | |
307 | IN QNC_SMM_GENERIC_PROTOCOL *This,\r | |
308 | IN EFI_SMM_HANDLER_ENTRY_POINT2 DispatchFunction,\r | |
309 | IN QNC_SMM_CONTEXT *RegisterContext,\r | |
310 | OUT EFI_HANDLE *DispatchHandle\r | |
311 | )\r | |
312 | /*++\r | |
313 | \r | |
314 | Routine Description:\r | |
315 | \r | |
316 | Arguments:\r | |
317 | \r | |
318 | Returns:\r | |
319 | \r | |
320 | --*/\r | |
321 | // GC_TODO: This - add argument and description to function comment\r | |
322 | // GC_TODO: DispatchFunction - add argument and description to function comment\r | |
323 | // GC_TODO: RegisterContext - add argument and description to function comment\r | |
324 | // GC_TODO: DispatchHandle - add argument and description to function comment\r | |
325 | // GC_TODO: EFI_OUT_OF_RESOURCES - add return value to function comment\r | |
326 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
327 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r | |
328 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
329 | {\r | |
330 | EFI_STATUS Status;\r | |
331 | DATABASE_RECORD *Record;\r | |
332 | QNC_SMM_QUALIFIED_PROTOCOL *Qualified;\r | |
333 | INTN Index;\r | |
334 | \r | |
335 | //\r | |
336 | // Check for invalid parameter\r | |
337 | //\r | |
338 | if (This == NULL || RegisterContext == NULL || DispatchHandle == NULL) {\r | |
339 | return EFI_INVALID_PARAMETER;\r | |
340 | }\r | |
341 | \r | |
342 | //\r | |
343 | // Create database record and add to database\r | |
344 | //\r | |
345 | Record = (DATABASE_RECORD *) AllocateZeroPool (sizeof (DATABASE_RECORD));\r | |
346 | if (Record == NULL) {\r | |
347 | return EFI_OUT_OF_RESOURCES;\r | |
348 | }\r | |
349 | \r | |
350 | //\r | |
351 | // Gather information about the registration request\r | |
352 | //\r | |
353 | Record->Callback = DispatchFunction;\r | |
29f169d1 MK |
354 | Record->CallbackContext = RegisterContext;\r |
355 | CopyMem (&Record->ChildContext, RegisterContext, sizeof (QNC_SMM_CONTEXT));\r | |
9b6bbcdb MK |
356 | \r |
357 | Qualified = QUALIFIED_PROTOCOL_FROM_GENERIC (This);\r | |
358 | \r | |
359 | Record->ProtocolType = Qualified->Type;\r | |
360 | \r | |
361 | CopyMem (&Record->ContextFunctions, &mContextFunctions[Qualified->Type], sizeof (Record->ContextFunctions));\r | |
362 | //\r | |
363 | // Perform linked list housekeeping\r | |
364 | //\r | |
365 | Record->Signature = DATABASE_RECORD_SIGNATURE;\r | |
366 | \r | |
367 | switch (Qualified->Type) {\r | |
368 | //\r | |
369 | // By the end of this switch statement, we'll know the\r | |
370 | // source description the child is registering for\r | |
371 | //\r | |
372 | case SxType:\r | |
373 | //\r | |
374 | // Check the validity of Context Type and Phase\r | |
375 | //\r | |
376 | if ((Record->ChildContext.Sx.Type < SxS0) ||\r | |
377 | (Record->ChildContext.Sx.Type >= EfiMaximumSleepType) ||\r | |
378 | (Record->ChildContext.Sx.Phase < SxEntry) ||\r | |
379 | (Record->ChildContext.Sx.Phase >= EfiMaximumPhase)\r | |
380 | ) {\r | |
381 | goto Error;\r | |
382 | }\r | |
383 | \r | |
384 | InsertTailList (&mPrivateData.CallbackDataBase, &Record->Link);\r | |
385 | CopyMem (&Record->SrcDesc, &SX_SOURCE_DESC, sizeof (Record->SrcDesc));\r | |
386 | //\r | |
387 | // use default clear source function\r | |
388 | //\r | |
389 | break;\r | |
390 | \r | |
391 | case SwType:\r | |
392 | if (RegisterContext->Sw.SwSmiInputValue == (UINTN)-1) {\r | |
393 | //\r | |
394 | // If SwSmiInputValue is set to (UINTN) -1 then a unique value will be assigned and returned in the structure.\r | |
395 | //\r | |
396 | Status = EFI_NOT_FOUND;\r | |
397 | for (Index = 1; Index < MAXIMUM_SWI_VALUE; Index++) {\r | |
398 | Status = SmiInputValueDuplicateCheck (Index);\r | |
399 | if (!EFI_ERROR (Status)) {\r | |
400 | RegisterContext->Sw.SwSmiInputValue = Index;\r | |
401 | break;\r | |
402 | }\r | |
403 | }\r | |
404 | if (RegisterContext->Sw.SwSmiInputValue == (UINTN)-1) {\r | |
405 | Status = gSmst->SmmFreePool (Record);\r | |
406 | return EFI_OUT_OF_RESOURCES;\r | |
407 | }\r | |
408 | //\r | |
409 | // Update ChildContext again as SwSmiInputValue has been changed\r | |
410 | //\r | |
29f169d1 | 411 | CopyMem (&Record->ChildContext, RegisterContext, sizeof (QNC_SMM_CONTEXT));\r |
9b6bbcdb MK |
412 | }\r |
413 | \r | |
414 | //\r | |
415 | // Check the validity of Context Value\r | |
416 | //\r | |
417 | if (Record->ChildContext.Sw.SwSmiInputValue > MAXIMUM_SWI_VALUE) {\r | |
418 | goto Error;\r | |
419 | }\r | |
420 | \r | |
421 | if (EFI_ERROR (SmiInputValueDuplicateCheck (Record->ChildContext.Sw.SwSmiInputValue))) {\r | |
422 | goto Error;\r | |
423 | }\r | |
424 | \r | |
425 | InsertTailList (&mPrivateData.CallbackDataBase, &Record->Link);\r | |
426 | CopyMem (&Record->SrcDesc, &SW_SOURCE_DESC, sizeof (Record->SrcDesc));\r | |
427 | Record->BufferSize = sizeof (EFI_SMM_SW_REGISTER_CONTEXT);\r | |
428 | //\r | |
429 | // use default clear source function\r | |
430 | //\r | |
431 | break;\r | |
432 | \r | |
433 | case GpiType:\r | |
434 | \r | |
435 | InsertTailList (&mPrivateData.CallbackDataBase, &Record->Link);\r | |
436 | CopyMem (&Record->SrcDesc, &GPI_SOURCE_DESC, sizeof (Record->SrcDesc));\r | |
437 | //\r | |
438 | // use default clear source function\r | |
439 | //\r | |
440 | break;\r | |
441 | \r | |
442 | case QNCnType:\r | |
443 | //\r | |
444 | // Check the validity of Context Type\r | |
445 | //\r | |
446 | if ((Record->ChildContext.QNCn.Type < IchnMch) || (Record->ChildContext.QNCn.Type >= NUM_ICHN_TYPES)) {\r | |
447 | goto Error;\r | |
448 | }\r | |
449 | \r | |
450 | InsertTailList (&mPrivateData.CallbackDataBase, &Record->Link);\r | |
451 | CopyMem (&Record->SrcDesc, &QNCN_SOURCE_DESCS[Record->ChildContext.QNCn.Type], sizeof (Record->SrcDesc));\r | |
452 | Record->ClearSource = QNCSmmQNCnClearSource;\r | |
453 | break;\r | |
454 | \r | |
455 | case PeriodicTimerType:\r | |
456 | \r | |
457 | Status = MapPeriodicTimerToSrcDesc (RegisterContext, &(Record->SrcDesc));\r | |
458 | if (EFI_ERROR (Status)) {\r | |
459 | goto Error;\r | |
460 | }\r | |
461 | \r | |
462 | InsertTailList (&mPrivateData.CallbackDataBase, &Record->Link);\r | |
463 | Record->BufferSize = sizeof (EFI_SMM_PERIODIC_TIMER_CONTEXT);\r | |
464 | Record->ClearSource = QNCSmmPeriodicTimerClearSource;\r | |
465 | break;\r | |
466 | \r | |
467 | default:\r | |
468 | goto Error;\r | |
469 | break;\r | |
470 | };\r | |
471 | \r | |
472 | if (Record->ClearSource == NULL) {\r | |
473 | //\r | |
474 | // Clear the SMI associated w/ the source using the default function\r | |
475 | //\r | |
476 | QNCSmmClearSource (&Record->SrcDesc);\r | |
477 | } else {\r | |
478 | //\r | |
479 | // This source requires special handling to clear\r | |
480 | //\r | |
481 | Record->ClearSource (&Record->SrcDesc);\r | |
482 | }\r | |
483 | \r | |
484 | QNCSmmEnableSource (&Record->SrcDesc);\r | |
485 | \r | |
486 | //\r | |
487 | // Child's handle will be the address linked list link in the record\r | |
488 | //\r | |
489 | *DispatchHandle = (EFI_HANDLE) (&Record->Link);\r | |
490 | \r | |
491 | return EFI_SUCCESS;\r | |
492 | \r | |
493 | Error:\r | |
494 | FreePool (Record);\r | |
495 | //\r | |
496 | // DEBUG((EFI_D_ERROR,"Free pool status %d\n", Status ));\r | |
497 | //\r | |
498 | return EFI_INVALID_PARAMETER;\r | |
499 | }\r | |
500 | \r | |
501 | EFI_STATUS\r | |
502 | QNCSmmCoreUnRegister (\r | |
503 | IN QNC_SMM_GENERIC_PROTOCOL *This,\r | |
504 | IN EFI_HANDLE DispatchHandle\r | |
505 | )\r | |
506 | /*++\r | |
507 | \r | |
508 | Routine Description:\r | |
509 | \r | |
510 | Arguments:\r | |
511 | \r | |
512 | Returns:\r | |
513 | \r | |
514 | --*/\r | |
515 | // GC_TODO: This - add argument and description to function comment\r | |
516 | // GC_TODO: DispatchHandle - add argument and description to function comment\r | |
517 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
518 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
519 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r | |
520 | {\r | |
521 | BOOLEAN SafeToDisable;\r | |
522 | DATABASE_RECORD *RecordToDelete;\r | |
523 | DATABASE_RECORD *RecordInDb;\r | |
524 | LIST_ENTRY *LinkInDb;\r | |
525 | \r | |
526 | if (DispatchHandle == NULL) {\r | |
527 | return EFI_INVALID_PARAMETER;\r | |
528 | }\r | |
529 | \r | |
530 | if (BASE_CR (DispatchHandle, DATABASE_RECORD, Link)->Signature != DATABASE_RECORD_SIGNATURE) {\r | |
531 | return EFI_INVALID_PARAMETER;\r | |
532 | }\r | |
533 | \r | |
534 | RecordToDelete = DATABASE_RECORD_FROM_LINK (DispatchHandle);\r | |
535 | \r | |
536 | RemoveEntryList (&RecordToDelete->Link);\r | |
537 | RecordToDelete->Signature = 0;\r | |
538 | \r | |
539 | //\r | |
540 | // See if we can disable the source, reserved for future use since this might\r | |
541 | // not be the only criteria to disable\r | |
542 | //\r | |
543 | SafeToDisable = TRUE;\r | |
544 | LinkInDb = GetFirstNode (&mPrivateData.CallbackDataBase);\r | |
545 | while(!IsNull (&mPrivateData.CallbackDataBase, LinkInDb)) {\r | |
546 | RecordInDb = DATABASE_RECORD_FROM_LINK (LinkInDb);\r | |
547 | if (CompareEnables (&RecordToDelete->SrcDesc, &RecordInDb->SrcDesc)) {\r | |
548 | SafeToDisable = FALSE;\r | |
549 | break;\r | |
550 | }\r | |
551 | LinkInDb = GetNextNode (&mPrivateData.CallbackDataBase, &RecordInDb->Link);\r | |
552 | }\r | |
553 | if (SafeToDisable) {\r | |
554 | QNCSmmDisableSource( &RecordToDelete->SrcDesc );\r | |
555 | }\r | |
556 | \r | |
557 | FreePool (RecordToDelete);\r | |
558 | \r | |
559 | return EFI_SUCCESS;\r | |
560 | }\r | |
561 | \r | |
562 | /**\r | |
563 | This function is the main entry point for an SMM handler dispatch\r | |
564 | or communicate-based callback.\r | |
565 | \r | |
566 | @param DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().\r | |
567 | @param RegisterContext Points to an optional handler context which was specified when the handler was registered.\r | |
568 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
569 | be conveyed from a non-SMM environment into an SMM environment.\r | |
570 | @param CommBufferSize The size of the CommBuffer.\r | |
571 | \r | |
572 | @return Status Code\r | |
573 | \r | |
574 | **/\r | |
575 | EFI_STATUS\r | |
576 | QNCSmmCoreDispatcher (\r | |
577 | IN EFI_HANDLE DispatchHandle,\r | |
578 | IN CONST VOID *RegisterContext,\r | |
579 | IN OUT VOID *CommBuffer,\r | |
580 | IN OUT UINTN *CommBufferSize\r | |
581 | )\r | |
582 | {\r | |
583 | //\r | |
584 | // Used to prevent infinite loops\r | |
585 | //\r | |
586 | UINTN EscapeCount;\r | |
587 | \r | |
588 | BOOLEAN ContextsMatch;\r | |
589 | BOOLEAN ResetListSearch;\r | |
590 | BOOLEAN EosSet;\r | |
591 | BOOLEAN SxChildWasDispatched;\r | |
592 | BOOLEAN ChildWasDispatched;\r | |
593 | \r | |
594 | DATABASE_RECORD *RecordInDb;\r | |
5f82e02a | 595 | DATABASE_RECORD ActiveRecordInDb;\r |
9b6bbcdb MK |
596 | LIST_ENTRY *LinkInDb;\r |
597 | DATABASE_RECORD *RecordToExhaust;\r | |
598 | LIST_ENTRY *LinkToExhaust;\r | |
599 | \r | |
600 | QNC_SMM_CONTEXT Context;\r | |
601 | VOID *CommunicationBuffer;\r | |
602 | UINTN BufferSize;\r | |
603 | \r | |
604 | EFI_STATUS Status;\r | |
605 | UINT32 NewValue;\r | |
606 | \r | |
607 | QNC_SMM_SOURCE_DESC ActiveSource = NULL_SOURCE_DESC_INITIALIZER;\r | |
608 | \r | |
609 | EscapeCount = 100;\r | |
610 | ContextsMatch = FALSE;\r | |
611 | ResetListSearch = FALSE;\r | |
612 | EosSet = FALSE;\r | |
613 | SxChildWasDispatched = FALSE;\r | |
614 | Status = EFI_WARN_INTERRUPT_SOURCE_PENDING;\r | |
615 | ChildWasDispatched = FALSE;\r | |
616 | \r | |
5f82e02a MK |
617 | //\r |
618 | // Mark all child handlers as not processed\r | |
619 | //\r | |
620 | LinkInDb = GetFirstNode (&mPrivateData.CallbackDataBase);\r | |
621 | while (!IsNull (&mPrivateData.CallbackDataBase, LinkInDb)) {\r | |
622 | RecordInDb = DATABASE_RECORD_FROM_LINK (LinkInDb);\r | |
623 | RecordInDb->Processed = FALSE;\r | |
624 | LinkInDb = GetNextNode (&mPrivateData.CallbackDataBase, LinkInDb);\r | |
625 | }\r | |
626 | \r | |
9b6bbcdb MK |
627 | //\r |
628 | // Preserve Index registers\r | |
629 | //\r | |
630 | SaveState ();\r | |
631 | \r | |
632 | if (!IsListEmpty (&mPrivateData.CallbackDataBase)) {\r | |
633 | //\r | |
634 | // We have children registered w/ us -- continue\r | |
635 | //\r | |
636 | while ((!EosSet) && (EscapeCount > 0)) {\r | |
637 | EscapeCount--;\r | |
638 | \r | |
639 | //\r | |
640 | // Reset this flag in order to be able to process multiple SMI Sources in one loop.\r | |
641 | //\r | |
642 | ResetListSearch = FALSE;\r | |
643 | \r | |
644 | LinkInDb = GetFirstNode (&mPrivateData.CallbackDataBase);\r | |
645 | \r | |
646 | while ((!IsNull (&mPrivateData.CallbackDataBase, LinkInDb)) && (ResetListSearch == FALSE)) {\r | |
647 | RecordInDb = DATABASE_RECORD_FROM_LINK (LinkInDb);\r | |
5f82e02a MK |
648 | //\r |
649 | // Make a copy of the record that contains an active SMI source,\r | |
650 | // because un-register maybe invoked in callback function and\r | |
651 | // RecordInDb maybe released\r | |
652 | //\r | |
653 | CopyMem (&ActiveRecordInDb, RecordInDb, sizeof (ActiveRecordInDb));\r | |
9b6bbcdb MK |
654 | \r |
655 | //\r | |
656 | // look for the first active source\r | |
657 | //\r | |
658 | if (!SourceIsActive (&RecordInDb->SrcDesc)) {\r | |
659 | //\r | |
660 | // Didn't find the source yet, keep looking\r | |
661 | //\r | |
662 | LinkInDb = GetNextNode (&mPrivateData.CallbackDataBase, &RecordInDb->Link);\r | |
663 | \r | |
664 | } else {\r | |
665 | //\r | |
666 | // We found a source. If this is a sleep type, we have to go to\r | |
667 | // appropriate sleep state anyway.No matter there is sleep child or not\r | |
668 | //\r | |
669 | if (RecordInDb->ProtocolType == SxType) {\r | |
670 | SxChildWasDispatched = TRUE;\r | |
671 | }\r | |
672 | //\r | |
673 | // "cache" the source description and don't query I/O anymore\r | |
674 | //\r | |
675 | CopyMem (&ActiveSource, &RecordInDb->SrcDesc, sizeof (ActiveSource));\r | |
676 | LinkToExhaust = LinkInDb;\r | |
677 | \r | |
678 | //\r | |
679 | // exhaust the rest of the queue looking for the same source\r | |
680 | //\r | |
681 | while (!IsNull (&mPrivateData.CallbackDataBase, LinkToExhaust)) {\r | |
682 | RecordToExhaust = DATABASE_RECORD_FROM_LINK (LinkToExhaust);\r | |
5f82e02a MK |
683 | LinkToExhaust = GetNextNode (&mPrivateData.CallbackDataBase, LinkToExhaust);\r |
684 | if (RecordToExhaust->Processed) {\r | |
685 | //\r | |
686 | // Record has already been processed. Continue with next child handler.\r | |
687 | //\r | |
688 | continue;\r | |
689 | }\r | |
9b6bbcdb MK |
690 | \r |
691 | if (CompareSources (&RecordToExhaust->SrcDesc, &ActiveSource)) {\r | |
692 | //\r | |
693 | // These source descriptions are equal, so this callback should be\r | |
694 | // dispatched.\r | |
695 | //\r | |
696 | if (RecordToExhaust->ContextFunctions.GetContext != NULL) {\r | |
697 | //\r | |
698 | // This child requires that we get a calling context from\r | |
699 | // hardware and compare that context to the one supplied\r | |
700 | // by the child.\r | |
701 | //\r | |
702 | ASSERT (RecordToExhaust->ContextFunctions.CmpContext != NULL);\r | |
703 | \r | |
704 | //\r | |
705 | // Make sure contexts match before dispatching event to child\r | |
706 | //\r | |
707 | RecordToExhaust->ContextFunctions.GetContext (RecordToExhaust, &Context);\r | |
708 | ContextsMatch = RecordToExhaust->ContextFunctions.CmpContext (&Context, &RecordToExhaust->ChildContext);\r | |
709 | \r | |
710 | } else {\r | |
711 | //\r | |
712 | // This child doesn't require any more calling context beyond what\r | |
713 | // it supplied in registration. Simply pass back what it gave us.\r | |
714 | //\r | |
715 | ASSERT (RecordToExhaust->Callback != NULL);\r | |
9b6bbcdb MK |
716 | ContextsMatch = TRUE;\r |
717 | }\r | |
718 | \r | |
5f82e02a MK |
719 | //\r |
720 | // Mark this child handler so it will not be processed again\r | |
721 | //\r | |
722 | RecordToExhaust->Processed = TRUE;\r | |
723 | \r | |
9b6bbcdb MK |
724 | if (ContextsMatch) {\r |
725 | \r | |
726 | if (RecordToExhaust->BufferSize != 0) {\r | |
727 | ASSERT (RecordToExhaust->ContextFunctions.GetBuffer != NULL);\r | |
728 | \r | |
729 | RecordToExhaust->ContextFunctions.GetBuffer (RecordToExhaust);\r | |
730 | \r | |
731 | CommunicationBuffer = &RecordToExhaust->CommBuffer;\r | |
732 | BufferSize = RecordToExhaust->BufferSize;\r | |
733 | } else {\r | |
734 | CommunicationBuffer = NULL;\r | |
735 | BufferSize = 0;\r | |
736 | }\r | |
737 | \r | |
738 | ASSERT (RecordToExhaust->Callback != NULL);\r | |
739 | \r | |
740 | RecordToExhaust->Callback (\r | |
741 | (EFI_HANDLE) & RecordToExhaust->Link,\r | |
29f169d1 | 742 | RecordToExhaust->CallbackContext,\r |
9b6bbcdb MK |
743 | CommunicationBuffer,\r |
744 | &BufferSize\r | |
745 | );\r | |
746 | \r | |
747 | ChildWasDispatched = TRUE;\r | |
748 | if (RecordToExhaust->ProtocolType == SxType) {\r | |
749 | SxChildWasDispatched = TRUE;\r | |
750 | }\r | |
751 | }\r | |
5f82e02a MK |
752 | //\r |
753 | // Can not use RecordInDb after this point because Callback may have unregistered RecordInDb\r | |
754 | // Restart processing of SMI handlers from the begining of the linked list because the\r | |
755 | // state of the linked listed may have been modified due to unregister actions in the Callback.\r | |
756 | //\r | |
757 | LinkToExhaust = GetFirstNode (&mPrivateData.CallbackDataBase);\r | |
9b6bbcdb | 758 | }\r |
9b6bbcdb MK |
759 | }\r |
760 | \r | |
4e33ff75 | 761 | if (ActiveRecordInDb.ClearSource == NULL) {\r |
9b6bbcdb MK |
762 | //\r |
763 | // Clear the SMI associated w/ the source using the default function\r | |
764 | //\r | |
765 | QNCSmmClearSource (&ActiveSource);\r | |
766 | } else {\r | |
767 | //\r | |
768 | // This source requires special handling to clear\r | |
769 | //\r | |
5f82e02a | 770 | ActiveRecordInDb.ClearSource (&ActiveSource);\r |
9b6bbcdb MK |
771 | }\r |
772 | \r | |
773 | if (ChildWasDispatched) {\r | |
774 | //\r | |
775 | // The interrupt was handled and quiesced\r | |
776 | //\r | |
777 | Status = EFI_SUCCESS;\r | |
778 | } else {\r | |
779 | //\r | |
780 | // The interrupt was not handled but quiesced\r | |
781 | //\r | |
782 | Status = EFI_WARN_INTERRUPT_SOURCE_QUIESCED;\r | |
783 | }\r | |
784 | \r | |
785 | //\r | |
786 | // Queue is empty, reset the search\r | |
787 | //\r | |
788 | ResetListSearch = TRUE;\r | |
789 | \r | |
790 | }\r | |
791 | }\r | |
792 | EosSet = QNCSmmSetAndCheckEos ();\r | |
793 | }\r | |
794 | }\r | |
795 | //\r | |
796 | // If you arrive here, there are two possible reasons:\r | |
797 | // (1) you've got problems with clearing the SMI status bits in the\r | |
798 | // ACPI table. If you don't properly clear the SMI bits, then you won't be able to set the\r | |
799 | // EOS bit. If this happens too many times, the loop exits.\r | |
800 | // (2) there was a SMM communicate for callback messages that was received prior\r | |
801 | // to this driver.\r | |
802 | // If there is an asynchronous SMI that occurs while processing the Callback, let\r | |
803 | // all of the drivers (including this one) have an opportunity to scan for the SMI\r | |
804 | // and handle it.\r | |
805 | // If not, we don't want to exit and have the foreground app. clear EOS without letting\r | |
806 | // these other sources get serviced.\r | |
807 | //\r | |
808 | ASSERT (EscapeCount > 0);\r | |
809 | \r | |
810 | //\r | |
811 | // Restore Index registers\r | |
812 | //\r | |
813 | RestoreState ();\r | |
814 | \r | |
815 | if (SxChildWasDispatched) {\r | |
816 | //\r | |
817 | // A child of the SmmSxDispatch protocol was dispatched during this call;\r | |
818 | // put the system to sleep.\r | |
819 | //\r | |
820 | QNCSmmSxGoToSleep ();\r | |
821 | }\r | |
822 | \r | |
823 | //\r | |
824 | // Ensure that SMI signal pin indicator is clear at the end of SMM handling.\r | |
825 | //\r | |
826 | NewValue = QNCPortRead (QUARK_NC_HOST_BRIDGE_SB_PORT_ID, QUARK_NC_HOST_BRIDGE_HLEGACY_REG);\r | |
827 | NewValue &= ~(HLEGACY_SMI_PIN_VALUE);\r | |
828 | QNCPortWrite (QUARK_NC_HOST_BRIDGE_SB_PORT_ID, QUARK_NC_HOST_BRIDGE_HLEGACY_REG, NewValue);\r | |
829 | \r | |
830 | return Status;\r | |
831 | }\r |