]>
Commit | Line | Data |
---|---|---|
23c98c94 | 1 | /** @file\r |
162ed594 | 2 | UEFI handle & protocol handling.\r |
28a00297 | 3 | \r |
23c98c94 | 4 | Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
28a00297 | 12 | \r |
504214c4 | 13 | **/\r |
28a00297 | 14 | \r |
9c4ac31c | 15 | #include "DxeMain.h"\r |
ec90508b | 16 | #include "Handle.h"\r |
28a00297 | 17 | \r |
18 | \r | |
19 | //\r | |
20 | // mProtocolDatabase - A list of all protocols in the system. (simple list for now)\r | |
21 | // gHandleList - A list of all the handles in the system\r | |
22 | // gProtocolDatabaseLock - Lock to protect the mProtocolDatabase\r | |
23 | // gHandleDatabaseKey - The Key to show that the handle has been created/modified\r | |
24 | //\r | |
e94a9ff7 | 25 | LIST_ENTRY mProtocolDatabase = INITIALIZE_LIST_HEAD_VARIABLE (mProtocolDatabase);\r |
28a00297 | 26 | LIST_ENTRY gHandleList = INITIALIZE_LIST_HEAD_VARIABLE (gHandleList);\r |
27 | EFI_LOCK gProtocolDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_NOTIFY);\r | |
28 | UINT64 gHandleDatabaseKey = 0;\r | |
29 | \r | |
30 | \r | |
162ed594 | 31 | \r |
32 | /**\r | |
33 | Acquire lock on gProtocolDatabaseLock.\r | |
34 | \r | |
35 | **/\r | |
28a00297 | 36 | VOID\r |
37 | CoreAcquireProtocolLock (\r | |
38 | VOID\r | |
39 | )\r | |
28a00297 | 40 | {\r |
41 | CoreAcquireLock (&gProtocolDatabaseLock);\r | |
42 | }\r | |
43 | \r | |
44 | \r | |
162ed594 | 45 | \r |
46 | /**\r | |
47 | Release lock on gProtocolDatabaseLock.\r | |
48 | \r | |
49 | **/\r | |
28a00297 | 50 | VOID\r |
51 | CoreReleaseProtocolLock (\r | |
52 | VOID\r | |
53 | )\r | |
28a00297 | 54 | {\r |
55 | CoreReleaseLock (&gProtocolDatabaseLock);\r | |
56 | }\r | |
57 | \r | |
58 | \r | |
28a00297 | 59 | \r |
162ed594 | 60 | /**\r |
28a00297 | 61 | Check whether a handle is a valid EFI_HANDLE\r |
28a00297 | 62 | \r |
022c6d45 | 63 | @param UserHandle The handle to check\r |
28a00297 | 64 | \r |
022c6d45 | 65 | @retval EFI_INVALID_PARAMETER The handle is NULL or not a valid EFI_HANDLE.\r |
162ed594 | 66 | @retval EFI_SUCCESS The handle is valid EFI_HANDLE.\r |
28a00297 | 67 | \r |
162ed594 | 68 | **/\r |
69 | EFI_STATUS\r | |
70 | CoreValidateHandle (\r | |
71 | IN EFI_HANDLE UserHandle\r | |
72 | )\r | |
28a00297 | 73 | {\r |
74 | IHANDLE *Handle;\r | |
75 | \r | |
76 | Handle = (IHANDLE *)UserHandle;\r | |
77 | if (Handle == NULL) {\r | |
78 | return EFI_INVALID_PARAMETER;\r | |
79 | }\r | |
80 | if (Handle->Signature != EFI_HANDLE_SIGNATURE) {\r | |
81 | return EFI_INVALID_PARAMETER;\r | |
82 | }\r | |
83 | return EFI_SUCCESS;\r | |
84 | }\r | |
85 | \r | |
86 | \r | |
28a00297 | 87 | \r |
162ed594 | 88 | /**\r |
28a00297 | 89 | Finds the protocol entry for the requested protocol.\r |
28a00297 | 90 | The gProtocolDatabaseLock must be owned\r |
91 | \r | |
022c6d45 | 92 | @param Protocol The ID of the protocol\r |
93 | @param Create Create a new entry if not found\r | |
28a00297 | 94 | \r |
162ed594 | 95 | @return Protocol entry\r |
28a00297 | 96 | \r |
162ed594 | 97 | **/\r |
98 | PROTOCOL_ENTRY *\r | |
99 | CoreFindProtocolEntry (\r | |
100 | IN EFI_GUID *Protocol,\r | |
101 | IN BOOLEAN Create\r | |
102 | )\r | |
28a00297 | 103 | {\r |
104 | LIST_ENTRY *Link;\r | |
105 | PROTOCOL_ENTRY *Item;\r | |
106 | PROTOCOL_ENTRY *ProtEntry;\r | |
107 | \r | |
108 | ASSERT_LOCKED(&gProtocolDatabaseLock);\r | |
109 | \r | |
110 | //\r | |
111 | // Search the database for the matching GUID\r | |
112 | //\r | |
113 | \r | |
114 | ProtEntry = NULL;\r | |
022c6d45 | 115 | for (Link = mProtocolDatabase.ForwardLink;\r |
116 | Link != &mProtocolDatabase;\r | |
28a00297 | 117 | Link = Link->ForwardLink) {\r |
118 | \r | |
119 | Item = CR(Link, PROTOCOL_ENTRY, AllEntries, PROTOCOL_ENTRY_SIGNATURE);\r | |
120 | if (CompareGuid (&Item->ProtocolID, Protocol)) {\r | |
121 | \r | |
122 | //\r | |
123 | // This is the protocol entry\r | |
124 | //\r | |
125 | \r | |
126 | ProtEntry = Item;\r | |
127 | break;\r | |
128 | }\r | |
129 | }\r | |
130 | \r | |
131 | //\r | |
022c6d45 | 132 | // If the protocol entry was not found and Create is TRUE, then\r |
28a00297 | 133 | // allocate a new entry\r |
022c6d45 | 134 | //\r |
28a00297 | 135 | if ((ProtEntry == NULL) && Create) {\r |
9c4ac31c | 136 | ProtEntry = AllocatePool (sizeof(PROTOCOL_ENTRY));\r |
022c6d45 | 137 | \r |
28a00297 | 138 | if (ProtEntry != NULL) {\r |
139 | //\r | |
140 | // Initialize new protocol entry structure\r | |
141 | //\r | |
142 | ProtEntry->Signature = PROTOCOL_ENTRY_SIGNATURE;\r | |
e94a9ff7 | 143 | CopyGuid ((VOID *)&ProtEntry->ProtocolID, Protocol);\r |
28a00297 | 144 | InitializeListHead (&ProtEntry->Protocols);\r |
145 | InitializeListHead (&ProtEntry->Notify);\r | |
146 | \r | |
147 | //\r | |
148 | // Add it to protocol database\r | |
149 | //\r | |
150 | InsertTailList (&mProtocolDatabase, &ProtEntry->AllEntries);\r | |
151 | }\r | |
152 | }\r | |
153 | \r | |
154 | return ProtEntry;\r | |
155 | }\r | |
156 | \r | |
157 | \r | |
162ed594 | 158 | \r |
159 | /**\r | |
160 | Finds the protocol instance for the requested handle and protocol.\r | |
161 | Note: This function doesn't do parameters checking, it's caller's responsibility\r | |
162 | to pass in valid parameters.\r | |
163 | \r | |
022c6d45 | 164 | @param Handle The handle to search the protocol on\r |
165 | @param Protocol GUID of the protocol\r | |
166 | @param Interface The interface for the protocol being searched\r | |
162ed594 | 167 | \r |
168 | @return Protocol instance (NULL: Not found)\r | |
169 | \r | |
170 | **/\r | |
28a00297 | 171 | PROTOCOL_INTERFACE *\r |
172 | CoreFindProtocolInterface (\r | |
173 | IN IHANDLE *Handle,\r | |
174 | IN EFI_GUID *Protocol,\r | |
175 | IN VOID *Interface\r | |
176 | )\r | |
28a00297 | 177 | {\r |
178 | PROTOCOL_INTERFACE *Prot;\r | |
179 | PROTOCOL_ENTRY *ProtEntry;\r | |
180 | LIST_ENTRY *Link;\r | |
181 | \r | |
182 | ASSERT_LOCKED(&gProtocolDatabaseLock);\r | |
183 | Prot = NULL;\r | |
184 | \r | |
185 | //\r | |
186 | // Lookup the protocol entry for this protocol ID\r | |
187 | //\r | |
188 | \r | |
189 | ProtEntry = CoreFindProtocolEntry (Protocol, FALSE);\r | |
190 | if (ProtEntry != NULL) {\r | |
191 | \r | |
192 | //\r | |
193 | // Look at each protocol interface for any matches\r | |
194 | //\r | |
195 | for (Link = Handle->Protocols.ForwardLink; Link != &Handle->Protocols; Link=Link->ForwardLink) {\r | |
196 | \r | |
197 | //\r | |
198 | // If this protocol interface matches, remove it\r | |
199 | //\r | |
200 | Prot = CR(Link, PROTOCOL_INTERFACE, Link, PROTOCOL_INTERFACE_SIGNATURE);\r | |
201 | if (Prot->Interface == Interface && Prot->Protocol == ProtEntry) {\r | |
202 | break;\r | |
203 | }\r | |
204 | \r | |
205 | Prot = NULL;\r | |
206 | }\r | |
207 | }\r | |
208 | \r | |
209 | return Prot;\r | |
210 | }\r | |
211 | \r | |
28a00297 | 212 | \r |
162ed594 | 213 | /**\r |
28a00297 | 214 | Removes an event from a register protocol notify list on a protocol.\r |
215 | \r | |
022c6d45 | 216 | @param Event The event to search for in the protocol\r |
217 | database.\r | |
28a00297 | 218 | \r |
162ed594 | 219 | @return EFI_SUCCESS if the event was found and removed.\r |
220 | @return EFI_NOT_FOUND if the event was not found in the protocl database.\r | |
28a00297 | 221 | \r |
162ed594 | 222 | **/\r |
162ed594 | 223 | EFI_STATUS\r |
224 | CoreUnregisterProtocolNotifyEvent (\r | |
225 | IN EFI_EVENT Event\r | |
226 | )\r | |
28a00297 | 227 | {\r |
228 | LIST_ENTRY *Link;\r | |
229 | PROTOCOL_ENTRY *ProtEntry;\r | |
230 | LIST_ENTRY *NotifyLink;\r | |
231 | PROTOCOL_NOTIFY *ProtNotify;\r | |
232 | \r | |
233 | CoreAcquireProtocolLock ();\r | |
234 | \r | |
022c6d45 | 235 | for ( Link = mProtocolDatabase.ForwardLink;\r |
236 | Link != &mProtocolDatabase;\r | |
28a00297 | 237 | Link = Link->ForwardLink) {\r |
238 | \r | |
239 | ProtEntry = CR(Link, PROTOCOL_ENTRY, AllEntries, PROTOCOL_ENTRY_SIGNATURE);\r | |
240 | \r | |
022c6d45 | 241 | for ( NotifyLink = ProtEntry->Notify.ForwardLink;\r |
242 | NotifyLink != &ProtEntry->Notify;\r | |
28a00297 | 243 | NotifyLink = NotifyLink->ForwardLink) {\r |
244 | \r | |
245 | ProtNotify = CR(NotifyLink, PROTOCOL_NOTIFY, Link, PROTOCOL_NOTIFY_SIGNATURE);\r | |
246 | \r | |
247 | if (ProtNotify->Event == Event) {\r | |
248 | RemoveEntryList(&ProtNotify->Link);\r | |
249 | CoreFreePool(ProtNotify);\r | |
250 | CoreReleaseProtocolLock ();\r | |
251 | return EFI_SUCCESS;\r | |
252 | }\r | |
253 | }\r | |
254 | }\r | |
255 | \r | |
256 | CoreReleaseProtocolLock ();\r | |
257 | return EFI_NOT_FOUND;\r | |
258 | }\r | |
259 | \r | |
260 | \r | |
28a00297 | 261 | \r |
162ed594 | 262 | /**\r |
28a00297 | 263 | Removes all the events in the protocol database that match Event.\r |
264 | \r | |
022c6d45 | 265 | @param Event The event to search for in the protocol\r |
266 | database.\r | |
28a00297 | 267 | \r |
162ed594 | 268 | @return EFI_SUCCESS when done searching the entire database.\r |
28a00297 | 269 | \r |
162ed594 | 270 | **/\r |
271 | EFI_STATUS\r | |
272 | CoreUnregisterProtocolNotify (\r | |
273 | IN EFI_EVENT Event\r | |
274 | )\r | |
28a00297 | 275 | {\r |
276 | EFI_STATUS Status;\r | |
277 | \r | |
278 | do {\r | |
279 | Status = CoreUnregisterProtocolNotifyEvent (Event);\r | |
280 | } while (!EFI_ERROR (Status));\r | |
281 | \r | |
282 | return EFI_SUCCESS;\r | |
283 | }\r | |
284 | \r | |
285 | \r | |
286 | \r | |
162ed594 | 287 | \r |
288 | /**\r | |
289 | Wrapper function to CoreInstallProtocolInterfaceNotify. This is the public API which\r | |
290 | Calls the private one which contains a BOOLEAN parameter for notifications\r | |
291 | \r | |
022c6d45 | 292 | @param UserHandle The handle to install the protocol handler on,\r |
293 | or NULL if a new handle is to be allocated\r | |
294 | @param Protocol The protocol to add to the handle\r | |
295 | @param InterfaceType Indicates whether Interface is supplied in\r | |
296 | native form.\r | |
297 | @param Interface The interface for the protocol being added\r | |
162ed594 | 298 | \r |
299 | @return Status code\r | |
300 | \r | |
301 | **/\r | |
28a00297 | 302 | EFI_STATUS\r |
303 | EFIAPI\r | |
304 | CoreInstallProtocolInterface (\r | |
305 | IN OUT EFI_HANDLE *UserHandle,\r | |
306 | IN EFI_GUID *Protocol,\r | |
307 | IN EFI_INTERFACE_TYPE InterfaceType,\r | |
308 | IN VOID *Interface\r | |
309 | )\r | |
28a00297 | 310 | {\r |
311 | return CoreInstallProtocolInterfaceNotify (\r | |
022c6d45 | 312 | UserHandle,\r |
313 | Protocol,\r | |
314 | InterfaceType,\r | |
315 | Interface,\r | |
28a00297 | 316 | TRUE\r |
317 | );\r | |
318 | }\r | |
319 | \r | |
162ed594 | 320 | \r |
321 | /**\r | |
322 | Installs a protocol interface into the boot services environment.\r | |
323 | \r | |
022c6d45 | 324 | @param UserHandle The handle to install the protocol handler on,\r |
325 | or NULL if a new handle is to be allocated\r | |
326 | @param Protocol The protocol to add to the handle\r | |
327 | @param InterfaceType Indicates whether Interface is supplied in\r | |
328 | native form.\r | |
329 | @param Interface The interface for the protocol being added\r | |
330 | @param Notify indicates whether notify the notification list\r | |
331 | for this protocol\r | |
332 | \r | |
333 | @retval EFI_INVALID_PARAMETER Invalid parameter\r | |
334 | @retval EFI_OUT_OF_RESOURCES No enough buffer to allocate\r | |
162ed594 | 335 | @retval EFI_SUCCESS Protocol interface successfully installed\r |
336 | \r | |
337 | **/\r | |
28a00297 | 338 | EFI_STATUS\r |
339 | CoreInstallProtocolInterfaceNotify (\r | |
340 | IN OUT EFI_HANDLE *UserHandle,\r | |
341 | IN EFI_GUID *Protocol,\r | |
342 | IN EFI_INTERFACE_TYPE InterfaceType,\r | |
343 | IN VOID *Interface,\r | |
344 | IN BOOLEAN Notify\r | |
345 | )\r | |
28a00297 | 346 | {\r |
347 | PROTOCOL_INTERFACE *Prot;\r | |
348 | PROTOCOL_ENTRY *ProtEntry;\r | |
349 | IHANDLE *Handle;\r | |
350 | EFI_STATUS Status;\r | |
351 | VOID *ExistingInterface;\r | |
352 | \r | |
353 | //\r | |
354 | // returns EFI_INVALID_PARAMETER if InterfaceType is invalid.\r | |
355 | // Also added check for invalid UserHandle and Protocol pointers.\r | |
356 | //\r | |
357 | if (UserHandle == NULL || Protocol == NULL) {\r | |
358 | return EFI_INVALID_PARAMETER;\r | |
359 | }\r | |
360 | \r | |
361 | if (InterfaceType != EFI_NATIVE_INTERFACE) {\r | |
362 | return EFI_INVALID_PARAMETER;\r | |
363 | }\r | |
364 | \r | |
365 | //\r | |
366 | // Print debug message\r | |
367 | //\r | |
1439777e | 368 | DEBUG((DEBUG_LOAD | DEBUG_INFO, "InstallProtocolInterface: %g %p\n", Protocol, Interface));\r |
28a00297 | 369 | \r |
370 | Status = EFI_OUT_OF_RESOURCES;\r | |
371 | Prot = NULL;\r | |
372 | Handle = NULL;\r | |
373 | \r | |
4008328a | 374 | if (*UserHandle != NULL) {\r |
28a00297 | 375 | Status = CoreHandleProtocol (*UserHandle, Protocol, (VOID **)&ExistingInterface);\r |
376 | if (!EFI_ERROR (Status)) {\r | |
377 | return EFI_INVALID_PARAMETER;\r | |
378 | }\r | |
379 | }\r | |
380 | \r | |
381 | //\r | |
022c6d45 | 382 | // Lock the protocol database\r |
28a00297 | 383 | //\r |
384 | CoreAcquireProtocolLock ();\r | |
385 | \r | |
386 | //\r | |
387 | // Lookup the Protocol Entry for the requested protocol\r | |
388 | //\r | |
389 | ProtEntry = CoreFindProtocolEntry (Protocol, TRUE);\r | |
390 | if (ProtEntry == NULL) {\r | |
391 | goto Done;\r | |
392 | }\r | |
393 | \r | |
394 | //\r | |
395 | // Allocate a new protocol interface structure\r | |
396 | //\r | |
9c4ac31c | 397 | Prot = AllocateZeroPool (sizeof(PROTOCOL_INTERFACE));\r |
28a00297 | 398 | if (Prot == NULL) {\r |
399 | Status = EFI_OUT_OF_RESOURCES;\r | |
400 | goto Done;\r | |
401 | }\r | |
402 | \r | |
403 | //\r | |
404 | // If caller didn't supply a handle, allocate a new one\r | |
405 | //\r | |
406 | Handle = (IHANDLE *)*UserHandle;\r | |
407 | if (Handle == NULL) {\r | |
9c4ac31c | 408 | Handle = AllocateZeroPool (sizeof(IHANDLE));\r |
28a00297 | 409 | if (Handle == NULL) {\r |
410 | Status = EFI_OUT_OF_RESOURCES;\r | |
411 | goto Done;\r | |
412 | }\r | |
413 | \r | |
414 | //\r | |
415 | // Initialize new handler structure\r | |
416 | //\r | |
417 | Handle->Signature = EFI_HANDLE_SIGNATURE;\r | |
418 | InitializeListHead (&Handle->Protocols);\r | |
419 | \r | |
420 | //\r | |
421 | // Initialize the Key to show that the handle has been created/modified\r | |
422 | //\r | |
423 | gHandleDatabaseKey++;\r | |
424 | Handle->Key = gHandleDatabaseKey;\r | |
425 | \r | |
426 | //\r | |
427 | // Add this handle to the list global list of all handles\r | |
428 | // in the system\r | |
429 | //\r | |
430 | InsertTailList (&gHandleList, &Handle->AllHandles);\r | |
022c6d45 | 431 | }\r |
28a00297 | 432 | \r |
433 | Status = CoreValidateHandle (Handle);\r | |
434 | if (EFI_ERROR (Status)) {\r | |
435 | goto Done;\r | |
436 | }\r | |
437 | \r | |
438 | //\r | |
439 | // Each interface that is added must be unique\r | |
440 | //\r | |
441 | ASSERT (CoreFindProtocolInterface (Handle, Protocol, Interface) == NULL);\r | |
442 | \r | |
443 | //\r | |
444 | // Initialize the protocol interface structure\r | |
445 | //\r | |
446 | Prot->Signature = PROTOCOL_INTERFACE_SIGNATURE;\r | |
447 | Prot->Handle = Handle;\r | |
448 | Prot->Protocol = ProtEntry;\r | |
449 | Prot->Interface = Interface;\r | |
450 | \r | |
451 | //\r | |
452 | // Initalize OpenProtocol Data base\r | |
453 | //\r | |
454 | InitializeListHead (&Prot->OpenList);\r | |
455 | Prot->OpenListCount = 0;\r | |
456 | \r | |
457 | //\r | |
022c6d45 | 458 | // Add this protocol interface to the head of the supported\r |
28a00297 | 459 | // protocol list for this handle\r |
460 | //\r | |
461 | InsertHeadList (&Handle->Protocols, &Prot->Link);\r | |
462 | \r | |
463 | //\r | |
022c6d45 | 464 | // Add this protocol interface to the tail of the\r |
28a00297 | 465 | // protocol entry\r |
022c6d45 | 466 | //\r |
28a00297 | 467 | InsertTailList (&ProtEntry->Protocols, &Prot->ByProtocol);\r |
468 | \r | |
469 | //\r | |
022c6d45 | 470 | // Notify the notification list for this protocol\r |
28a00297 | 471 | //\r |
472 | if (Notify) {\r | |
473 | CoreNotifyProtocolEntry (ProtEntry);\r | |
474 | }\r | |
475 | Status = EFI_SUCCESS;\r | |
476 | \r | |
477 | Done:\r | |
478 | //\r | |
479 | // Done, unlock the database and return\r | |
480 | //\r | |
481 | CoreReleaseProtocolLock ();\r | |
482 | if (!EFI_ERROR (Status)) {\r | |
483 | //\r | |
484 | // Return the new handle back to the caller\r | |
485 | //\r | |
486 | *UserHandle = Handle;\r | |
487 | } else {\r | |
488 | //\r | |
489 | // There was an error, clean up\r | |
490 | //\r | |
491 | if (Prot != NULL) {\r | |
492 | CoreFreePool (Prot);\r | |
493 | }\r | |
494 | }\r | |
495 | \r | |
496 | return Status;\r | |
497 | }\r | |
498 | \r | |
499 | \r | |
500 | \r | |
28a00297 | 501 | \r |
162ed594 | 502 | /**\r |
28a00297 | 503 | Installs a list of protocol interface into the boot services environment.\r |
504 | This function calls InstallProtocolInterface() in a loop. If any error\r | |
162ed594 | 505 | occures all the protocols added by this function are removed. This is\r |
28a00297 | 506 | basically a lib function to save space.\r |
507 | \r | |
022c6d45 | 508 | @param Handle The handle to install the protocol handlers on,\r |
509 | or NULL if a new handle is to be allocated\r | |
510 | @param ... EFI_GUID followed by protocol instance. A NULL\r | |
511 | terminates the list. The pairs are the\r | |
512 | arguments to InstallProtocolInterface(). All the\r | |
513 | protocols are added to Handle.\r | |
28a00297 | 514 | \r |
022c6d45 | 515 | @retval EFI_INVALID_PARAMETER Handle is NULL.\r |
162ed594 | 516 | @retval EFI_SUCCESS Protocol interfaces successfully installed.\r |
28a00297 | 517 | \r |
162ed594 | 518 | **/\r |
519 | EFI_STATUS\r | |
520 | EFIAPI\r | |
521 | CoreInstallMultipleProtocolInterfaces (\r | |
522 | IN OUT EFI_HANDLE *Handle,\r | |
523 | ...\r | |
524 | )\r | |
28a00297 | 525 | {\r |
162ed594 | 526 | VA_LIST Args;\r |
28a00297 | 527 | EFI_STATUS Status;\r |
528 | EFI_GUID *Protocol;\r | |
529 | VOID *Interface;\r | |
530 | EFI_TPL OldTpl;\r | |
531 | UINTN Index;\r | |
532 | EFI_HANDLE OldHandle;\r | |
533 | EFI_HANDLE DeviceHandle;\r | |
534 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
022c6d45 | 535 | \r |
28a00297 | 536 | if (Handle == NULL) {\r |
537 | return EFI_INVALID_PARAMETER;\r | |
538 | }\r | |
022c6d45 | 539 | \r |
540 | //\r | |
541 | // Syncronize with notifcations.\r | |
28a00297 | 542 | //\r |
28a00297 | 543 | OldTpl = CoreRaiseTpl (TPL_NOTIFY);\r |
544 | OldHandle = *Handle;\r | |
545 | \r | |
546 | //\r | |
547 | // Check for duplicate device path and install the protocol interfaces\r | |
548 | //\r | |
162ed594 | 549 | VA_START (Args, Handle);\r |
28a00297 | 550 | for (Index = 0, Status = EFI_SUCCESS; !EFI_ERROR (Status); Index++) {\r |
551 | //\r | |
552 | // If protocol is NULL, then it's the end of the list\r | |
553 | //\r | |
162ed594 | 554 | Protocol = VA_ARG (Args, EFI_GUID *);\r |
28a00297 | 555 | if (Protocol == NULL) {\r |
556 | break;\r | |
557 | }\r | |
558 | \r | |
162ed594 | 559 | Interface = VA_ARG (Args, VOID *);\r |
28a00297 | 560 | \r |
561 | //\r | |
562 | // Make sure you are installing on top a device path that has already been added.\r | |
563 | //\r | |
564 | if (CompareGuid (Protocol, &gEfiDevicePathProtocolGuid)) {\r | |
565 | DeviceHandle = NULL;\r | |
566 | DevicePath = Interface;\r | |
567 | Status = CoreLocateDevicePath (&gEfiDevicePathProtocolGuid, &DevicePath, &DeviceHandle);\r | |
4008328a | 568 | if (!EFI_ERROR (Status) && (DeviceHandle != NULL) && IsDevicePathEnd(DevicePath)) {\r |
28a00297 | 569 | Status = EFI_ALREADY_STARTED;\r |
570 | continue;\r | |
571 | }\r | |
572 | }\r | |
022c6d45 | 573 | \r |
28a00297 | 574 | //\r |
575 | // Install it\r | |
576 | //\r | |
577 | Status = CoreInstallProtocolInterface (Handle, Protocol, EFI_NATIVE_INTERFACE, Interface);\r | |
578 | }\r | |
a70c0fd8 | 579 | VA_END (Args);\r |
022c6d45 | 580 | \r |
28a00297 | 581 | //\r |
582 | // If there was an error, remove all the interfaces that were installed without any errors\r | |
583 | //\r | |
584 | if (EFI_ERROR (Status)) {\r | |
585 | //\r | |
586 | // Reset the va_arg back to the first argument.\r | |
587 | //\r | |
162ed594 | 588 | VA_START (Args, Handle);\r |
28a00297 | 589 | for (; Index > 1; Index--) {\r |
162ed594 | 590 | Protocol = VA_ARG (Args, EFI_GUID *);\r |
591 | Interface = VA_ARG (Args, VOID *);\r | |
28a00297 | 592 | CoreUninstallProtocolInterface (*Handle, Protocol, Interface);\r |
022c6d45 | 593 | }\r |
a70c0fd8 | 594 | VA_END (Args);\r |
595 | \r | |
28a00297 | 596 | *Handle = OldHandle;\r |
597 | }\r | |
598 | \r | |
599 | //\r | |
600 | // Done\r | |
601 | //\r | |
602 | CoreRestoreTpl (OldTpl);\r | |
603 | return Status;\r | |
604 | }\r | |
605 | \r | |
28a00297 | 606 | \r |
162ed594 | 607 | /**\r |
28a00297 | 608 | Attempts to disconnect all drivers that are using the protocol interface being queried.\r |
609 | If failed, reconnect all drivers disconnected.\r | |
162ed594 | 610 | Note: This function doesn't do parameters checking, it's caller's responsibility\r |
611 | to pass in valid parameters.\r | |
28a00297 | 612 | \r |
022c6d45 | 613 | @param UserHandle The handle on which the protocol is installed\r |
614 | @param Prot The protocol to disconnect drivers from\r | |
28a00297 | 615 | \r |
022c6d45 | 616 | @retval EFI_SUCCESS Drivers using the protocol interface are all\r |
617 | disconnected\r | |
162ed594 | 618 | @retval EFI_ACCESS_DENIED Failed to disconnect one or all of the drivers\r |
28a00297 | 619 | \r |
162ed594 | 620 | **/\r |
621 | EFI_STATUS\r | |
622 | CoreDisconnectControllersUsingProtocolInterface (\r | |
623 | IN EFI_HANDLE UserHandle,\r | |
624 | IN PROTOCOL_INTERFACE *Prot\r | |
625 | )\r | |
28a00297 | 626 | {\r |
627 | EFI_STATUS Status;\r | |
628 | BOOLEAN ItemFound;\r | |
629 | LIST_ENTRY *Link;\r | |
630 | OPEN_PROTOCOL_DATA *OpenData;\r | |
631 | \r | |
632 | Status = EFI_SUCCESS;\r | |
022c6d45 | 633 | \r |
28a00297 | 634 | //\r |
635 | // Attempt to disconnect all drivers from this protocol interface\r | |
636 | //\r | |
637 | do {\r | |
638 | ItemFound = FALSE;\r | |
639 | for ( Link = Prot->OpenList.ForwardLink;\r | |
640 | (Link != &Prot->OpenList) && !ItemFound;\r | |
641 | Link = Link->ForwardLink ) {\r | |
642 | OpenData = CR (Link, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
6e536468 | 643 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) != 0) {\r |
28a00297 | 644 | ItemFound = TRUE;\r |
645 | CoreReleaseProtocolLock ();\r | |
646 | Status = CoreDisconnectController (UserHandle, OpenData->AgentHandle, NULL);\r | |
647 | CoreAcquireProtocolLock ();\r | |
648 | if (EFI_ERROR (Status)) {\r | |
649 | ItemFound = FALSE;\r | |
650 | break;\r | |
651 | }\r | |
652 | }\r | |
653 | }\r | |
654 | } while (ItemFound);\r | |
655 | \r | |
656 | if (!EFI_ERROR (Status)) {\r | |
657 | //\r | |
658 | // Attempt to remove BY_HANDLE_PROTOOCL and GET_PROTOCOL and TEST_PROTOCOL Open List items\r | |
659 | //\r | |
660 | do {\r | |
661 | ItemFound = FALSE;\r | |
662 | for ( Link = Prot->OpenList.ForwardLink;\r | |
663 | (Link != &Prot->OpenList) && !ItemFound;\r | |
664 | Link = Link->ForwardLink ) {\r | |
665 | OpenData = CR (Link, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
6e536468 | 666 | if ((OpenData->Attributes &\r |
667 | (EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL | EFI_OPEN_PROTOCOL_GET_PROTOCOL | EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) != 0) {\r | |
28a00297 | 668 | ItemFound = TRUE;\r |
022c6d45 | 669 | RemoveEntryList (&OpenData->Link);\r |
28a00297 | 670 | Prot->OpenListCount--;\r |
671 | CoreFreePool (OpenData);\r | |
672 | }\r | |
673 | }\r | |
674 | } while (ItemFound);\r | |
675 | }\r | |
676 | \r | |
677 | //\r | |
678 | // If there are errors or still has open items in the list, then reconnect all the drivers and return an error\r | |
679 | //\r | |
680 | if (EFI_ERROR (Status) || (Prot->OpenListCount > 0)) {\r | |
681 | CoreReleaseProtocolLock ();\r | |
682 | CoreConnectController (UserHandle, NULL, NULL, TRUE);\r | |
683 | CoreAcquireProtocolLock ();\r | |
684 | Status = EFI_ACCESS_DENIED;\r | |
685 | }\r | |
686 | \r | |
687 | return Status;\r | |
688 | }\r | |
689 | \r | |
690 | \r | |
162ed594 | 691 | \r |
692 | /**\r | |
693 | Uninstalls all instances of a protocol:interfacer from a handle.\r | |
694 | If the last protocol interface is remove from the handle, the\r | |
695 | handle is freed.\r | |
696 | \r | |
022c6d45 | 697 | @param UserHandle The handle to remove the protocol handler from\r |
698 | @param Protocol The protocol, of protocol:interface, to remove\r | |
699 | @param Interface The interface, of protocol:interface, to remove\r | |
162ed594 | 700 | \r |
022c6d45 | 701 | @retval EFI_INVALID_PARAMETER Protocol is NULL.\r |
162ed594 | 702 | @retval EFI_SUCCESS Protocol interface successfully uninstalled.\r |
703 | \r | |
704 | **/\r | |
28a00297 | 705 | EFI_STATUS\r |
706 | EFIAPI\r | |
707 | CoreUninstallProtocolInterface (\r | |
708 | IN EFI_HANDLE UserHandle,\r | |
709 | IN EFI_GUID *Protocol,\r | |
710 | IN VOID *Interface\r | |
711 | )\r | |
28a00297 | 712 | {\r |
713 | EFI_STATUS Status;\r | |
714 | IHANDLE *Handle;\r | |
715 | PROTOCOL_INTERFACE *Prot;\r | |
716 | \r | |
717 | //\r | |
718 | // Check that Protocol is valid\r | |
719 | //\r | |
720 | if (Protocol == NULL) {\r | |
721 | return EFI_INVALID_PARAMETER;\r | |
722 | }\r | |
723 | \r | |
724 | //\r | |
725 | // Check that UserHandle is a valid handle\r | |
726 | //\r | |
727 | Status = CoreValidateHandle (UserHandle);\r | |
728 | if (EFI_ERROR (Status)) {\r | |
729 | return Status;\r | |
730 | }\r | |
731 | \r | |
732 | //\r | |
733 | // Lock the protocol database\r | |
734 | //\r | |
735 | CoreAcquireProtocolLock ();\r | |
736 | \r | |
737 | //\r | |
738 | // Check that Protocol exists on UserHandle, and Interface matches the interface in the database\r | |
739 | //\r | |
740 | Prot = CoreFindProtocolInterface (UserHandle, Protocol, Interface);\r | |
741 | if (Prot == NULL) {\r | |
742 | Status = EFI_NOT_FOUND;\r | |
743 | goto Done;\r | |
744 | }\r | |
745 | \r | |
746 | //\r | |
747 | // Attempt to disconnect all drivers that are using the protocol interface that is about to be removed\r | |
748 | //\r | |
749 | Status = CoreDisconnectControllersUsingProtocolInterface (\r | |
750 | UserHandle,\r | |
751 | Prot\r | |
752 | );\r | |
753 | if (EFI_ERROR (Status)) {\r | |
754 | //\r | |
755 | // One or more drivers refused to release, so return the error\r | |
756 | //\r | |
757 | goto Done;\r | |
758 | }\r | |
759 | \r | |
760 | //\r | |
761 | // Remove the protocol interface from the protocol\r | |
762 | //\r | |
763 | Status = EFI_NOT_FOUND;\r | |
764 | Handle = (IHANDLE *)UserHandle;\r | |
765 | Prot = CoreRemoveInterfaceFromProtocol (Handle, Protocol, Interface);\r | |
766 | \r | |
767 | if (Prot != NULL) {\r | |
768 | //\r | |
769 | // Update the Key to show that the handle has been created/modified\r | |
770 | //\r | |
771 | gHandleDatabaseKey++;\r | |
772 | Handle->Key = gHandleDatabaseKey;\r | |
022c6d45 | 773 | \r |
28a00297 | 774 | //\r |
775 | // Remove the protocol interface from the handle\r | |
776 | //\r | |
777 | RemoveEntryList (&Prot->Link);\r | |
778 | \r | |
779 | //\r | |
780 | // Free the memory\r | |
781 | //\r | |
782 | Prot->Signature = 0;\r | |
783 | CoreFreePool (Prot);\r | |
784 | Status = EFI_SUCCESS;\r | |
785 | }\r | |
786 | \r | |
787 | //\r | |
788 | // If there are no more handlers for the handle, free the handle\r | |
789 | //\r | |
790 | if (IsListEmpty (&Handle->Protocols)) {\r | |
791 | Handle->Signature = 0;\r | |
792 | RemoveEntryList (&Handle->AllHandles);\r | |
793 | CoreFreePool (Handle);\r | |
794 | }\r | |
795 | \r | |
022c6d45 | 796 | Done:\r |
28a00297 | 797 | //\r |
798 | // Done, unlock the database and return\r | |
799 | //\r | |
800 | CoreReleaseProtocolLock ();\r | |
801 | return Status;\r | |
802 | }\r | |
803 | \r | |
804 | \r | |
805 | \r | |
162ed594 | 806 | \r |
807 | /**\r | |
808 | Uninstalls a list of protocol interface in the boot services environment.\r | |
809 | This function calls UnisatllProtocolInterface() in a loop. This is\r | |
810 | basically a lib function to save space.\r | |
811 | \r | |
022c6d45 | 812 | @param Handle The handle to uninstall the protocol\r |
813 | @param ... EFI_GUID followed by protocol instance. A NULL\r | |
814 | terminates the list. The pairs are the\r | |
815 | arguments to UninstallProtocolInterface(). All\r | |
816 | the protocols are added to Handle.\r | |
162ed594 | 817 | \r |
818 | @return Status code\r | |
819 | \r | |
820 | **/\r | |
28a00297 | 821 | EFI_STATUS\r |
822 | EFIAPI\r | |
823 | CoreUninstallMultipleProtocolInterfaces (\r | |
824 | IN EFI_HANDLE Handle,\r | |
825 | ...\r | |
826 | )\r | |
28a00297 | 827 | {\r |
828 | EFI_STATUS Status;\r | |
162ed594 | 829 | VA_LIST Args;\r |
28a00297 | 830 | EFI_GUID *Protocol;\r |
831 | VOID *Interface;\r | |
832 | UINTN Index;\r | |
833 | \r | |
162ed594 | 834 | VA_START (Args, Handle);\r |
28a00297 | 835 | for (Index = 0, Status = EFI_SUCCESS; !EFI_ERROR (Status); Index++) {\r |
836 | //\r | |
837 | // If protocol is NULL, then it's the end of the list\r | |
838 | //\r | |
162ed594 | 839 | Protocol = VA_ARG (Args, EFI_GUID *);\r |
28a00297 | 840 | if (Protocol == NULL) {\r |
841 | break;\r | |
842 | }\r | |
843 | \r | |
162ed594 | 844 | Interface = VA_ARG (Args, VOID *);\r |
28a00297 | 845 | \r |
846 | //\r | |
847 | // Uninstall it\r | |
848 | //\r | |
849 | Status = CoreUninstallProtocolInterface (Handle, Protocol, Interface);\r | |
850 | }\r | |
a70c0fd8 | 851 | VA_END (Args);\r |
28a00297 | 852 | \r |
853 | //\r | |
854 | // If there was an error, add all the interfaces that were\r | |
855 | // uninstalled without any errors\r | |
856 | //\r | |
857 | if (EFI_ERROR (Status)) {\r | |
858 | //\r | |
859 | // Reset the va_arg back to the first argument.\r | |
860 | //\r | |
162ed594 | 861 | VA_START (Args, Handle);\r |
28a00297 | 862 | for (; Index > 1; Index--) {\r |
162ed594 | 863 | Protocol = VA_ARG(Args, EFI_GUID *);\r |
864 | Interface = VA_ARG(Args, VOID *);\r | |
28a00297 | 865 | CoreInstallProtocolInterface (&Handle, Protocol, EFI_NATIVE_INTERFACE, Interface);\r |
022c6d45 | 866 | }\r |
a70c0fd8 | 867 | VA_END (Args);\r |
28a00297 | 868 | }\r |
869 | \r | |
870 | return Status;\r | |
022c6d45 | 871 | }\r |
28a00297 | 872 | \r |
162ed594 | 873 | \r |
874 | /**\r | |
875 | Locate a certain GUID protocol interface in a Handle's protocols.\r | |
876 | \r | |
022c6d45 | 877 | @param UserHandle The handle to obtain the protocol interface on\r |
878 | @param Protocol The GUID of the protocol\r | |
162ed594 | 879 | \r |
880 | @return The requested protocol interface for the handle\r | |
881 | \r | |
882 | **/\r | |
28a00297 | 883 | PROTOCOL_INTERFACE *\r |
884 | CoreGetProtocolInterface (\r | |
885 | IN EFI_HANDLE UserHandle,\r | |
886 | IN EFI_GUID *Protocol\r | |
887 | )\r | |
28a00297 | 888 | {\r |
889 | EFI_STATUS Status;\r | |
890 | PROTOCOL_ENTRY *ProtEntry;\r | |
891 | PROTOCOL_INTERFACE *Prot;\r | |
892 | IHANDLE *Handle;\r | |
893 | LIST_ENTRY *Link;\r | |
894 | \r | |
895 | Status = CoreValidateHandle (UserHandle);\r | |
896 | if (EFI_ERROR (Status)) {\r | |
897 | return NULL;\r | |
898 | }\r | |
022c6d45 | 899 | \r |
28a00297 | 900 | Handle = (IHANDLE *)UserHandle;\r |
901 | \r | |
902 | //\r | |
903 | // Look at each protocol interface for a match\r | |
904 | //\r | |
905 | for (Link = Handle->Protocols.ForwardLink; Link != &Handle->Protocols; Link = Link->ForwardLink) {\r | |
906 | Prot = CR(Link, PROTOCOL_INTERFACE, Link, PROTOCOL_INTERFACE_SIGNATURE);\r | |
907 | ProtEntry = Prot->Protocol;\r | |
908 | if (CompareGuid (&ProtEntry->ProtocolID, Protocol)) {\r | |
909 | return Prot;\r | |
910 | }\r | |
911 | }\r | |
912 | return NULL;\r | |
913 | }\r | |
914 | \r | |
915 | \r | |
162ed594 | 916 | \r |
917 | /**\r | |
918 | Queries a handle to determine if it supports a specified protocol.\r | |
919 | \r | |
022c6d45 | 920 | @param UserHandle The handle being queried.\r |
921 | @param Protocol The published unique identifier of the protocol.\r | |
922 | @param Interface Supplies the address where a pointer to the\r | |
923 | corresponding Protocol Interface is returned.\r | |
162ed594 | 924 | \r |
11074aab | 925 | @retval EFI_SUCCESS The interface information for the specified protocol was returned.\r |
926 | @retval EFI_UNSUPPORTED The device does not support the specified protocol.\r | |
927 | @retval EFI_INVALID_PARAMETER Handle is not a valid EFI_HANDLE..\r | |
928 | @retval EFI_INVALID_PARAMETER Protocol is NULL.\r | |
929 | @retval EFI_INVALID_PARAMETER Interface is NULL.\r | |
162ed594 | 930 | \r |
931 | **/\r | |
28a00297 | 932 | EFI_STATUS\r |
933 | EFIAPI\r | |
934 | CoreHandleProtocol (\r | |
935 | IN EFI_HANDLE UserHandle,\r | |
936 | IN EFI_GUID *Protocol,\r | |
937 | OUT VOID **Interface\r | |
938 | )\r | |
28a00297 | 939 | {\r |
940 | return CoreOpenProtocol (\r | |
022c6d45 | 941 | UserHandle,\r |
942 | Protocol,\r | |
943 | Interface,\r | |
944 | gDxeCoreImageHandle,\r | |
945 | NULL,\r | |
28a00297 | 946 | EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL\r |
947 | );\r | |
948 | }\r | |
949 | \r | |
950 | \r | |
162ed594 | 951 | \r |
952 | /**\r | |
953 | Locates the installed protocol handler for the handle, and\r | |
954 | invokes it to obtain the protocol interface. Usage information\r | |
955 | is registered in the protocol data base.\r | |
956 | \r | |
022c6d45 | 957 | @param UserHandle The handle to obtain the protocol interface on\r |
958 | @param Protocol The ID of the protocol\r | |
959 | @param Interface The location to return the protocol interface\r | |
960 | @param ImageHandle The handle of the Image that is opening the\r | |
961 | protocol interface specified by Protocol and\r | |
962 | Interface.\r | |
963 | @param ControllerHandle The controller handle that is requiring this\r | |
964 | interface.\r | |
965 | @param Attributes The open mode of the protocol interface\r | |
966 | specified by Handle and Protocol.\r | |
967 | \r | |
968 | @retval EFI_INVALID_PARAMETER Protocol is NULL.\r | |
162ed594 | 969 | @retval EFI_SUCCESS Get the protocol interface.\r |
970 | \r | |
971 | **/\r | |
28a00297 | 972 | EFI_STATUS\r |
973 | EFIAPI\r | |
974 | CoreOpenProtocol (\r | |
975 | IN EFI_HANDLE UserHandle,\r | |
976 | IN EFI_GUID *Protocol,\r | |
977 | OUT VOID **Interface OPTIONAL,\r | |
978 | IN EFI_HANDLE ImageHandle,\r | |
979 | IN EFI_HANDLE ControllerHandle,\r | |
980 | IN UINT32 Attributes\r | |
981 | )\r | |
28a00297 | 982 | {\r |
983 | EFI_STATUS Status;\r | |
984 | PROTOCOL_INTERFACE *Prot;\r | |
985 | LIST_ENTRY *Link;\r | |
986 | OPEN_PROTOCOL_DATA *OpenData;\r | |
987 | BOOLEAN ByDriver;\r | |
988 | BOOLEAN Exclusive;\r | |
989 | BOOLEAN Disconnect;\r | |
990 | BOOLEAN ExactMatch;\r | |
991 | \r | |
992 | //\r | |
993 | // Check for invalid Protocol\r | |
994 | //\r | |
995 | if (Protocol == NULL) {\r | |
996 | return EFI_INVALID_PARAMETER;\r | |
997 | }\r | |
998 | \r | |
999 | //\r | |
1000 | // Check for invalid Interface\r | |
1001 | //\r | |
1002 | if (Attributes != EFI_OPEN_PROTOCOL_TEST_PROTOCOL) {\r | |
1003 | if (Interface == NULL) {\r | |
1004 | return EFI_INVALID_PARAMETER;\r | |
1005 | } else {\r | |
1006 | *Interface = NULL;\r | |
1007 | }\r | |
1008 | }\r | |
022c6d45 | 1009 | \r |
28a00297 | 1010 | //\r |
1011 | // Check for invalid UserHandle\r | |
1012 | //\r | |
1013 | Status = CoreValidateHandle (UserHandle);\r | |
1014 | if (EFI_ERROR (Status)) {\r | |
1015 | return Status;\r | |
1016 | }\r | |
1017 | \r | |
1018 | //\r | |
1019 | // Check for invalid Attributes\r | |
1020 | //\r | |
1021 | switch (Attributes) {\r | |
1022 | case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER :\r | |
1023 | Status = CoreValidateHandle (ImageHandle);\r | |
1024 | if (EFI_ERROR (Status)) {\r | |
1025 | return Status;\r | |
1026 | }\r | |
1027 | Status = CoreValidateHandle (ControllerHandle);\r | |
1028 | if (EFI_ERROR (Status)) {\r | |
1029 | return Status;\r | |
1030 | }\r | |
1031 | if (UserHandle == ControllerHandle) {\r | |
1032 | return EFI_INVALID_PARAMETER;\r | |
1033 | }\r | |
1034 | break;\r | |
1035 | case EFI_OPEN_PROTOCOL_BY_DRIVER :\r | |
1036 | case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE :\r | |
1037 | Status = CoreValidateHandle (ImageHandle);\r | |
1038 | if (EFI_ERROR (Status)) {\r | |
1039 | return Status;\r | |
1040 | }\r | |
1041 | Status = CoreValidateHandle (ControllerHandle);\r | |
1042 | if (EFI_ERROR (Status)) {\r | |
1043 | return Status;\r | |
1044 | }\r | |
1045 | break;\r | |
1046 | case EFI_OPEN_PROTOCOL_EXCLUSIVE :\r | |
1047 | Status = CoreValidateHandle (ImageHandle);\r | |
1048 | if (EFI_ERROR (Status)) {\r | |
1049 | return Status;\r | |
1050 | }\r | |
1051 | break;\r | |
1052 | case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL :\r | |
1053 | case EFI_OPEN_PROTOCOL_GET_PROTOCOL :\r | |
1054 | case EFI_OPEN_PROTOCOL_TEST_PROTOCOL :\r | |
1055 | break;\r | |
1056 | default:\r | |
1057 | return EFI_INVALID_PARAMETER;\r | |
1058 | }\r | |
1059 | \r | |
1060 | //\r | |
1061 | // Lock the protocol database\r | |
1062 | //\r | |
1063 | CoreAcquireProtocolLock ();\r | |
1064 | \r | |
1065 | //\r | |
1066 | // Look at each protocol interface for a match\r | |
1067 | //\r | |
1068 | Prot = CoreGetProtocolInterface (UserHandle, Protocol);\r | |
1069 | if (Prot == NULL) {\r | |
1070 | Status = EFI_UNSUPPORTED;\r | |
1071 | goto Done;\r | |
1072 | }\r | |
1073 | \r | |
1074 | //\r | |
1075 | // This is the protocol interface entry for this protocol\r | |
022c6d45 | 1076 | //\r |
28a00297 | 1077 | if (Attributes != EFI_OPEN_PROTOCOL_TEST_PROTOCOL) {\r |
1078 | *Interface = Prot->Interface;\r | |
1079 | }\r | |
1080 | Status = EFI_SUCCESS;\r | |
1081 | \r | |
1082 | ByDriver = FALSE;\r | |
1083 | Exclusive = FALSE;\r | |
1084 | for ( Link = Prot->OpenList.ForwardLink; Link != &Prot->OpenList; Link = Link->ForwardLink) {\r | |
1085 | OpenData = CR (Link, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
022c6d45 | 1086 | ExactMatch = (BOOLEAN)((OpenData->AgentHandle == ImageHandle) &&\r |
28a00297 | 1087 | (OpenData->Attributes == Attributes) &&\r |
1088 | (OpenData->ControllerHandle == ControllerHandle));\r | |
6e536468 | 1089 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) != 0) {\r |
28a00297 | 1090 | ByDriver = TRUE;\r |
1091 | if (ExactMatch) {\r | |
1092 | Status = EFI_ALREADY_STARTED;\r | |
1093 | goto Done;\r | |
1094 | }\r | |
1095 | }\r | |
6e536468 | 1096 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_EXCLUSIVE) != 0) {\r |
28a00297 | 1097 | Exclusive = TRUE;\r |
1098 | } else if (ExactMatch) {\r | |
1099 | OpenData->OpenCount++;\r | |
1100 | Status = EFI_SUCCESS;\r | |
1101 | goto Done;\r | |
1102 | }\r | |
1103 | }\r | |
1104 | \r | |
1105 | //\r | |
1106 | // ByDriver TRUE -> A driver is managing (UserHandle, Protocol)\r | |
1107 | // ByDriver FALSE -> There are no drivers managing (UserHandle, Protocol)\r | |
1108 | // Exclusive TRUE -> Something has exclusive access to (UserHandle, Protocol)\r | |
1109 | // Exclusive FALSE -> Nothing has exclusive access to (UserHandle, Protocol)\r | |
1110 | //\r | |
1111 | \r | |
1112 | switch (Attributes) {\r | |
1113 | case EFI_OPEN_PROTOCOL_BY_DRIVER :\r | |
1114 | if (Exclusive || ByDriver) {\r | |
1115 | Status = EFI_ACCESS_DENIED;\r | |
1116 | goto Done;\r | |
1117 | }\r | |
1118 | break;\r | |
1119 | case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE :\r | |
1120 | case EFI_OPEN_PROTOCOL_EXCLUSIVE :\r | |
1121 | if (Exclusive) {\r | |
1122 | Status = EFI_ACCESS_DENIED;\r | |
1123 | goto Done;\r | |
1124 | }\r | |
1125 | if (ByDriver) {\r | |
1126 | do {\r | |
1127 | Disconnect = FALSE;\r | |
1128 | for ( Link = Prot->OpenList.ForwardLink; (Link != &Prot->OpenList) && (!Disconnect); Link = Link->ForwardLink) {\r | |
1129 | OpenData = CR (Link, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
6e536468 | 1130 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) != 0) {\r |
28a00297 | 1131 | Disconnect = TRUE;\r |
1132 | CoreReleaseProtocolLock ();\r | |
1133 | Status = CoreDisconnectController (UserHandle, OpenData->AgentHandle, NULL);\r | |
1134 | CoreAcquireProtocolLock ();\r | |
1135 | if (EFI_ERROR (Status)) {\r | |
1136 | Status = EFI_ACCESS_DENIED;\r | |
1137 | goto Done;\r | |
1138 | }\r | |
1139 | }\r | |
1140 | }\r | |
1141 | } while (Disconnect);\r | |
022c6d45 | 1142 | }\r |
28a00297 | 1143 | break;\r |
1144 | case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER :\r | |
1145 | case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL :\r | |
1146 | case EFI_OPEN_PROTOCOL_GET_PROTOCOL :\r | |
1147 | case EFI_OPEN_PROTOCOL_TEST_PROTOCOL :\r | |
1148 | break;\r | |
1149 | }\r | |
1150 | \r | |
1151 | if (ImageHandle == NULL) {\r | |
1152 | Status = EFI_SUCCESS;\r | |
1153 | goto Done;\r | |
1154 | }\r | |
1155 | //\r | |
1156 | // Create new entry\r | |
1157 | //\r | |
9c4ac31c | 1158 | OpenData = AllocatePool (sizeof(OPEN_PROTOCOL_DATA));\r |
28a00297 | 1159 | if (OpenData == NULL) {\r |
1160 | Status = EFI_OUT_OF_RESOURCES;\r | |
1161 | } else {\r | |
1162 | OpenData->Signature = OPEN_PROTOCOL_DATA_SIGNATURE;\r | |
1163 | OpenData->AgentHandle = ImageHandle;\r | |
1164 | OpenData->ControllerHandle = ControllerHandle;\r | |
1165 | OpenData->Attributes = Attributes;\r | |
1166 | OpenData->OpenCount = 1;\r | |
1167 | InsertTailList (&Prot->OpenList, &OpenData->Link);\r | |
1168 | Prot->OpenListCount++;\r | |
1169 | Status = EFI_SUCCESS;\r | |
1170 | }\r | |
1171 | \r | |
1172 | Done:\r | |
1173 | //\r | |
1174 | // Done. Release the database lock are return\r | |
1175 | //\r | |
1176 | CoreReleaseProtocolLock ();\r | |
1177 | return Status;\r | |
1178 | }\r | |
1179 | \r | |
1180 | \r | |
162ed594 | 1181 | \r |
1182 | /**\r | |
1183 | Closes a protocol on a handle that was opened using OpenProtocol().\r | |
1184 | \r | |
022c6d45 | 1185 | @param UserHandle The handle for the protocol interface that was\r |
1186 | previously opened with OpenProtocol(), and is\r | |
1187 | now being closed.\r | |
1188 | @param Protocol The published unique identifier of the protocol.\r | |
1189 | It is the caller's responsibility to pass in a\r | |
1190 | valid GUID.\r | |
1191 | @param AgentHandle The handle of the agent that is closing the\r | |
1192 | protocol interface.\r | |
1193 | @param ControllerHandle If the agent that opened a protocol is a driver\r | |
1194 | that follows the EFI Driver Model, then this\r | |
1195 | parameter is the controller handle that required\r | |
1196 | the protocol interface. If the agent does not\r | |
1197 | follow the EFI Driver Model, then this parameter\r | |
1198 | is optional and may be NULL.\r | |
1199 | \r | |
1200 | @retval EFI_SUCCESS The protocol instance was closed.\r | |
1201 | @retval EFI_INVALID_PARAMETER Handle, AgentHandle or ControllerHandle is not a\r | |
1202 | valid EFI_HANDLE.\r | |
1203 | @retval EFI_NOT_FOUND Can not find the specified protocol or\r | |
162ed594 | 1204 | AgentHandle.\r |
1205 | \r | |
1206 | **/\r | |
28a00297 | 1207 | EFI_STATUS\r |
1208 | EFIAPI\r | |
1209 | CoreCloseProtocol (\r | |
1210 | IN EFI_HANDLE UserHandle,\r | |
1211 | IN EFI_GUID *Protocol,\r | |
1212 | IN EFI_HANDLE AgentHandle,\r | |
022c6d45 | 1213 | IN EFI_HANDLE ControllerHandle\r |
28a00297 | 1214 | )\r |
28a00297 | 1215 | {\r |
1216 | EFI_STATUS Status;\r | |
1217 | PROTOCOL_INTERFACE *ProtocolInterface;\r | |
1218 | LIST_ENTRY *Link;\r | |
1219 | OPEN_PROTOCOL_DATA *OpenData;\r | |
1220 | \r | |
1221 | //\r | |
1222 | // Check for invalid parameters\r | |
1223 | //\r | |
1224 | Status = CoreValidateHandle (UserHandle);\r | |
1225 | if (EFI_ERROR (Status)) {\r | |
1226 | return Status;\r | |
1227 | }\r | |
1228 | Status = CoreValidateHandle (AgentHandle);\r | |
1229 | if (EFI_ERROR (Status)) {\r | |
1230 | return Status;\r | |
1231 | }\r | |
4008328a | 1232 | if (ControllerHandle != NULL) {\r |
28a00297 | 1233 | Status = CoreValidateHandle (ControllerHandle);\r |
1234 | if (EFI_ERROR (Status)) {\r | |
1235 | return Status;\r | |
1236 | }\r | |
1237 | }\r | |
1238 | if (Protocol == NULL) {\r | |
1239 | return EFI_INVALID_PARAMETER;\r | |
1240 | }\r | |
1241 | \r | |
1242 | //\r | |
1243 | // Lock the protocol database\r | |
1244 | //\r | |
1245 | CoreAcquireProtocolLock ();\r | |
1246 | \r | |
1247 | //\r | |
1248 | // Look at each protocol interface for a match\r | |
1249 | //\r | |
1250 | Status = EFI_NOT_FOUND;\r | |
1251 | ProtocolInterface = CoreGetProtocolInterface (UserHandle, Protocol);\r | |
1252 | if (ProtocolInterface == NULL) {\r | |
1253 | goto Done;\r | |
1254 | }\r | |
1255 | \r | |
1256 | //\r | |
1257 | // Walk the Open data base looking for AgentHandle\r | |
1258 | //\r | |
1259 | Link = ProtocolInterface->OpenList.ForwardLink;\r | |
1260 | while (Link != &ProtocolInterface->OpenList) {\r | |
1261 | OpenData = CR (Link, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
1262 | Link = Link->ForwardLink;\r | |
1263 | if ((OpenData->AgentHandle == AgentHandle) && (OpenData->ControllerHandle == ControllerHandle)) {\r | |
022c6d45 | 1264 | RemoveEntryList (&OpenData->Link);\r |
28a00297 | 1265 | ProtocolInterface->OpenListCount--;\r |
1266 | CoreFreePool (OpenData);\r | |
1267 | Status = EFI_SUCCESS;\r | |
1268 | }\r | |
1269 | }\r | |
1270 | \r | |
1271 | Done:\r | |
1272 | //\r | |
1273 | // Done. Release the database lock and return.\r | |
1274 | //\r | |
1275 | CoreReleaseProtocolLock ();\r | |
1276 | return Status;\r | |
1277 | }\r | |
1278 | \r | |
1279 | \r | |
1280 | \r | |
162ed594 | 1281 | \r |
1282 | /**\r | |
1283 | Return information about Opened protocols in the system\r | |
1284 | \r | |
022c6d45 | 1285 | @param UserHandle The handle to close the protocol interface on\r |
1286 | @param Protocol The ID of the protocol\r | |
11074aab | 1287 | @param EntryBuffer A pointer to a buffer of open protocol information in the\r |
1288 | form of EFI_OPEN_PROTOCOL_INFORMATION_ENTRY structures.\r | |
162ed594 | 1289 | @param EntryCount Number of EntryBuffer entries\r |
1290 | \r | |
11074aab | 1291 | @retval EFI_SUCCESS The open protocol information was returned in EntryBuffer, \r |
1292 | and the number of entries was returned EntryCount.\r | |
1293 | @retval EFI_NOT_FOUND Handle does not support the protocol specified by Protocol.\r | |
1294 | @retval EFI_OUT_OF_RESOURCES There are not enough resources available to allocate EntryBuffer.\r | |
1295 | \r | |
162ed594 | 1296 | **/\r |
28a00297 | 1297 | EFI_STATUS\r |
1298 | EFIAPI\r | |
1299 | CoreOpenProtocolInformation (\r | |
1300 | IN EFI_HANDLE UserHandle,\r | |
1301 | IN EFI_GUID *Protocol,\r | |
1302 | OUT EFI_OPEN_PROTOCOL_INFORMATION_ENTRY **EntryBuffer,\r | |
1303 | OUT UINTN *EntryCount\r | |
1304 | )\r | |
28a00297 | 1305 | {\r |
1306 | EFI_STATUS Status;\r | |
1307 | PROTOCOL_INTERFACE *ProtocolInterface;\r | |
1308 | LIST_ENTRY *Link;\r | |
1309 | OPEN_PROTOCOL_DATA *OpenData;\r | |
1310 | EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *Buffer;\r | |
1311 | UINTN Count;\r | |
1312 | UINTN Size;\r | |
1313 | \r | |
1314 | *EntryBuffer = NULL;\r | |
1315 | *EntryCount = 0;\r | |
1316 | \r | |
1317 | //\r | |
1318 | // Lock the protocol database\r | |
1319 | //\r | |
1320 | CoreAcquireProtocolLock ();\r | |
1321 | \r | |
1322 | //\r | |
1323 | // Look at each protocol interface for a match\r | |
1324 | //\r | |
1325 | Status = EFI_NOT_FOUND;\r | |
1326 | ProtocolInterface = CoreGetProtocolInterface (UserHandle, Protocol);\r | |
1327 | if (ProtocolInterface == NULL) {\r | |
1328 | goto Done;\r | |
1329 | }\r | |
1330 | \r | |
1331 | //\r | |
1332 | // Count the number of Open Entries\r | |
1333 | //\r | |
022c6d45 | 1334 | for ( Link = ProtocolInterface->OpenList.ForwardLink, Count = 0;\r |
28a00297 | 1335 | (Link != &ProtocolInterface->OpenList) ;\r |
1336 | Link = Link->ForwardLink ) {\r | |
1337 | Count++;\r | |
022c6d45 | 1338 | }\r |
28a00297 | 1339 | \r |
1340 | ASSERT (Count == ProtocolInterface->OpenListCount);\r | |
1341 | \r | |
1342 | if (Count == 0) {\r | |
1343 | Size = sizeof(EFI_OPEN_PROTOCOL_INFORMATION_ENTRY);\r | |
1344 | } else {\r | |
1345 | Size = Count * sizeof(EFI_OPEN_PROTOCOL_INFORMATION_ENTRY);\r | |
1346 | }\r | |
1347 | \r | |
9c4ac31c | 1348 | Buffer = AllocatePool (Size);\r |
28a00297 | 1349 | if (Buffer == NULL) {\r |
1350 | Status = EFI_OUT_OF_RESOURCES;\r | |
1351 | goto Done;\r | |
1352 | }\r | |
1353 | \r | |
1354 | Status = EFI_SUCCESS;\r | |
022c6d45 | 1355 | for ( Link = ProtocolInterface->OpenList.ForwardLink, Count = 0;\r |
28a00297 | 1356 | (Link != &ProtocolInterface->OpenList);\r |
1357 | Link = Link->ForwardLink, Count++ ) {\r | |
1358 | OpenData = CR (Link, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
1359 | \r | |
1360 | Buffer[Count].AgentHandle = OpenData->AgentHandle;\r | |
1361 | Buffer[Count].ControllerHandle = OpenData->ControllerHandle;\r | |
1362 | Buffer[Count].Attributes = OpenData->Attributes;\r | |
1363 | Buffer[Count].OpenCount = OpenData->OpenCount;\r | |
022c6d45 | 1364 | }\r |
28a00297 | 1365 | \r |
1366 | *EntryBuffer = Buffer;\r | |
1367 | *EntryCount = Count;\r | |
022c6d45 | 1368 | \r |
28a00297 | 1369 | Done:\r |
1370 | //\r | |
1439777e | 1371 | // Done. Release the database lock.\r |
28a00297 | 1372 | //\r |
1373 | CoreReleaseProtocolLock ();\r | |
1374 | return Status;\r | |
1375 | }\r | |
1376 | \r | |
1377 | \r | |
1378 | \r | |
162ed594 | 1379 | \r |
1380 | /**\r | |
1381 | Retrieves the list of protocol interface GUIDs that are installed on a handle in a buffer allocated\r | |
1382 | from pool.\r | |
1383 | \r | |
022c6d45 | 1384 | @param UserHandle The handle from which to retrieve the list of\r |
1385 | protocol interface GUIDs.\r | |
1386 | @param ProtocolBuffer A pointer to the list of protocol interface GUID\r | |
1387 | pointers that are installed on Handle.\r | |
1388 | @param ProtocolBufferCount A pointer to the number of GUID pointers present\r | |
1389 | in ProtocolBuffer.\r | |
1390 | \r | |
1391 | @retval EFI_SUCCESS The list of protocol interface GUIDs installed\r | |
1392 | on Handle was returned in ProtocolBuffer. The\r | |
1393 | number of protocol interface GUIDs was returned\r | |
1394 | in ProtocolBufferCount.\r | |
1395 | @retval EFI_INVALID_PARAMETER Handle is NULL.\r | |
1396 | @retval EFI_INVALID_PARAMETER Handle is not a valid EFI_HANDLE.\r | |
1397 | @retval EFI_INVALID_PARAMETER ProtocolBuffer is NULL.\r | |
1398 | @retval EFI_INVALID_PARAMETER ProtocolBufferCount is NULL.\r | |
1399 | @retval EFI_OUT_OF_RESOURCES There is not enough pool memory to store the\r | |
162ed594 | 1400 | results.\r |
1401 | \r | |
1402 | **/\r | |
28a00297 | 1403 | EFI_STATUS\r |
1404 | EFIAPI\r | |
1405 | CoreProtocolsPerHandle (\r | |
1406 | IN EFI_HANDLE UserHandle,\r | |
1407 | OUT EFI_GUID ***ProtocolBuffer,\r | |
1408 | OUT UINTN *ProtocolBufferCount\r | |
1409 | )\r | |
28a00297 | 1410 | {\r |
1411 | EFI_STATUS Status;\r | |
1412 | IHANDLE *Handle;\r | |
1413 | PROTOCOL_INTERFACE *Prot;\r | |
1414 | LIST_ENTRY *Link;\r | |
1415 | UINTN ProtocolCount;\r | |
1416 | EFI_GUID **Buffer;\r | |
1417 | \r | |
1418 | Status = CoreValidateHandle (UserHandle);\r | |
1419 | if (EFI_ERROR (Status)) {\r | |
1420 | return Status;\r | |
1421 | }\r | |
1422 | \r | |
1423 | Handle = (IHANDLE *)UserHandle;\r | |
1424 | \r | |
1425 | if (ProtocolBuffer == NULL) {\r | |
1426 | return EFI_INVALID_PARAMETER;\r | |
1427 | }\r | |
1428 | \r | |
1429 | if (ProtocolBufferCount == NULL) {\r | |
1430 | return EFI_INVALID_PARAMETER;\r | |
1431 | }\r | |
1432 | \r | |
1433 | *ProtocolBufferCount = 0;\r | |
1434 | \r | |
1435 | ProtocolCount = 0;\r | |
1436 | \r | |
1437 | CoreAcquireProtocolLock ();\r | |
022c6d45 | 1438 | \r |
28a00297 | 1439 | for (Link = Handle->Protocols.ForwardLink; Link != &Handle->Protocols; Link = Link->ForwardLink) {\r |
1440 | ProtocolCount++;\r | |
1441 | }\r | |
1442 | \r | |
1443 | //\r | |
1444 | // If there are no protocol interfaces installed on Handle, then Handle is not a valid EFI_HANDLE\r | |
1445 | //\r | |
1446 | if (ProtocolCount == 0) {\r | |
1447 | Status = EFI_INVALID_PARAMETER;\r | |
1448 | goto Done;\r | |
1449 | }\r | |
1450 | \r | |
9c4ac31c | 1451 | Buffer = AllocatePool (sizeof (EFI_GUID *) * ProtocolCount);\r |
28a00297 | 1452 | if (Buffer == NULL) {\r |
1453 | Status = EFI_OUT_OF_RESOURCES;\r | |
1454 | goto Done;\r | |
1455 | }\r | |
1456 | \r | |
1457 | *ProtocolBuffer = Buffer;\r | |
1458 | *ProtocolBufferCount = ProtocolCount;\r | |
1459 | \r | |
1460 | for ( Link = Handle->Protocols.ForwardLink, ProtocolCount = 0;\r | |
022c6d45 | 1461 | Link != &Handle->Protocols;\r |
28a00297 | 1462 | Link = Link->ForwardLink, ProtocolCount++) {\r |
1463 | Prot = CR(Link, PROTOCOL_INTERFACE, Link, PROTOCOL_INTERFACE_SIGNATURE);\r | |
1464 | Buffer[ProtocolCount] = &(Prot->Protocol->ProtocolID);\r | |
1465 | }\r | |
1466 | Status = EFI_SUCCESS;\r | |
1467 | \r | |
1468 | Done:\r | |
1469 | CoreReleaseProtocolLock ();\r | |
1470 | return Status;\r | |
1471 | }\r | |
1472 | \r | |
1473 | \r | |
28a00297 | 1474 | \r |
162ed594 | 1475 | /**\r |
28a00297 | 1476 | return handle database key.\r |
1477 | \r | |
28a00297 | 1478 | \r |
162ed594 | 1479 | @return Handle database key.\r |
1480 | \r | |
1481 | **/\r | |
1482 | UINT64\r | |
1483 | CoreGetHandleDatabaseKey (\r | |
1484 | VOID\r | |
1485 | )\r | |
28a00297 | 1486 | {\r |
1487 | return gHandleDatabaseKey;\r | |
1488 | }\r | |
1489 | \r | |
1490 | \r | |
28a00297 | 1491 | \r |
162ed594 | 1492 | /**\r |
28a00297 | 1493 | Go connect any handles that were created or modified while a image executed.\r |
1494 | \r | |
022c6d45 | 1495 | @param Key The Key to show that the handle has been\r |
162ed594 | 1496 | created/modified\r |
28a00297 | 1497 | \r |
162ed594 | 1498 | **/\r |
1499 | VOID\r | |
1500 | CoreConnectHandlesByKey (\r | |
1501 | UINT64 Key\r | |
1502 | )\r | |
28a00297 | 1503 | {\r |
1504 | UINTN Count;\r | |
1505 | LIST_ENTRY *Link;\r | |
1506 | EFI_HANDLE *HandleBuffer;\r | |
1507 | IHANDLE *Handle;\r | |
1508 | UINTN Index;\r | |
1509 | \r | |
1510 | //\r | |
1511 | // Lock the protocol database\r | |
1512 | //\r | |
1513 | CoreAcquireProtocolLock ();\r | |
1514 | \r | |
1515 | for (Link = gHandleList.ForwardLink, Count = 0; Link != &gHandleList; Link = Link->ForwardLink) {\r | |
1516 | Handle = CR (Link, IHANDLE, AllHandles, EFI_HANDLE_SIGNATURE);\r | |
1517 | if (Handle->Key > Key) {\r | |
1518 | Count++;\r | |
1519 | }\r | |
1520 | }\r | |
1521 | \r | |
9c4ac31c | 1522 | HandleBuffer = AllocatePool (Count * sizeof (EFI_HANDLE));\r |
28a00297 | 1523 | if (HandleBuffer == NULL) {\r |
1524 | CoreReleaseProtocolLock ();\r | |
1525 | return;\r | |
1526 | }\r | |
022c6d45 | 1527 | \r |
28a00297 | 1528 | for (Link = gHandleList.ForwardLink, Count = 0; Link != &gHandleList; Link = Link->ForwardLink) {\r |
1529 | Handle = CR (Link, IHANDLE, AllHandles, EFI_HANDLE_SIGNATURE);\r | |
1530 | if (Handle->Key > Key) {\r | |
1531 | HandleBuffer[Count++] = Handle;\r | |
1532 | }\r | |
1533 | }\r | |
1534 | \r | |
1535 | //\r | |
1536 | // Unlock the protocol database\r | |
1537 | //\r | |
1538 | CoreReleaseProtocolLock ();\r | |
1539 | \r | |
1540 | //\r | |
1541 | // Connect all handles whose Key value is greater than Key\r | |
1542 | //\r | |
1543 | for (Index = 0; Index < Count; Index++) {\r | |
1544 | CoreConnectController (HandleBuffer[Index], NULL, NULL, TRUE);\r | |
1545 | }\r | |
022c6d45 | 1546 | \r |
28a00297 | 1547 | CoreFreePool(HandleBuffer);\r |
1548 | }\r |