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28a00297 | 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 | DriverSupport.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | EFI Driver Support Protocol\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | --*/\r | |
23 | \r | |
24 | #include <DxeMain.h>\r | |
25 | \r | |
85658066 | 26 | BOOLEAN mRepairLoadedImage = FALSE;\r |
28a00297 | 27 | \r |
85658066 | 28 | //\r |
29 | // Driver Support Function Prototypes\r | |
30 | //\r | |
28a00297 | 31 | EFI_STATUS\r |
32 | GetHandleFromDriverBinding (\r | |
33 | IN EFI_DRIVER_BINDING_PROTOCOL *DriverBindingNeed,\r | |
34 | OUT EFI_HANDLE *Handle \r | |
35 | );\r | |
36 | \r | |
28a00297 | 37 | EFI_STATUS \r |
38 | CoreConnectSingleController (\r | |
39 | IN EFI_HANDLE ControllerHandle,\r | |
40 | IN EFI_HANDLE *DriverImageHandle OPTIONAL,\r | |
41 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
42 | );\r | |
43 | \r | |
44 | //\r | |
45 | // Driver Support Functions\r | |
46 | //\r | |
28a00297 | 47 | EFI_STATUS \r |
48 | EFIAPI\r | |
49 | CoreConnectController (\r | |
50 | IN EFI_HANDLE ControllerHandle,\r | |
51 | IN EFI_HANDLE *DriverImageHandle OPTIONAL,\r | |
52 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL,\r | |
53 | IN BOOLEAN Recursive\r | |
54 | )\r | |
55 | /*++\r | |
56 | \r | |
57 | Routine Description:\r | |
58 | \r | |
59 | Connects one or more drivers to a controller.\r | |
60 | \r | |
61 | Arguments:\r | |
62 | \r | |
63 | ControllerHandle - Handle of the controller to be connected.\r | |
64 | \r | |
65 | DriverImageHandle - DriverImageHandle A pointer to an ordered list of driver image handles.\r | |
66 | \r | |
67 | RemainingDevicePath - RemainingDevicePath A pointer to the device path that specifies a child of the\r | |
68 | controller specified by ControllerHandle.\r | |
69 | \r | |
70 | Recursive - Whether the function would be called recursively or not.\r | |
71 | \r | |
72 | Returns:\r | |
73 | \r | |
74 | Status code.\r | |
75 | \r | |
76 | --*/\r | |
77 | {\r | |
78 | EFI_STATUS Status;\r | |
79 | EFI_STATUS ReturnStatus;\r | |
80 | IHANDLE *Handle;\r | |
81 | PROTOCOL_INTERFACE *Prot;\r | |
82 | LIST_ENTRY *Link;\r | |
83 | LIST_ENTRY *ProtLink;\r | |
84 | OPEN_PROTOCOL_DATA *OpenData;\r | |
85 | EFI_DEVICE_PATH_PROTOCOL *AlignedRemainingDevicePath;\r | |
85658066 | 86 | EFI_HANDLE *ChildHandleBuffer;\r |
87 | UINTN ChildHandleCount;\r | |
88 | UINTN Index;\r | |
89 | EFI_HANDLE *LoadedImageHandleBuffer;\r | |
90 | UINTN LoadedImageHandleCount;\r | |
91 | LOADED_IMAGE_PRIVATE_DATA *Image;\r | |
92 | EFI_HANDLE DeviceHandle;\r | |
93 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
28a00297 | 94 | \r |
95 | //\r | |
96 | // Make sure ControllerHandle is valid\r | |
97 | //\r | |
98 | Status = CoreValidateHandle (ControllerHandle);\r | |
99 | if (EFI_ERROR (Status)) {\r | |
100 | return Status;\r | |
101 | }\r | |
102 | \r | |
103 | Handle = ControllerHandle;\r | |
104 | \r | |
105 | //\r | |
85658066 | 106 | // Make a copy of RemainingDevicePath to guanatee it is aligned\r |
28a00297 | 107 | //\r |
108 | AlignedRemainingDevicePath = NULL;\r | |
109 | if (RemainingDevicePath != NULL) {\r | |
110 | AlignedRemainingDevicePath = CoreDuplicateDevicePath (RemainingDevicePath);\r | |
111 | }\r | |
28a00297 | 112 | \r |
113 | //\r | |
85658066 | 114 | // Connect all drivers to ControllerHandle\r |
115 | // If CoreConnectSingleController returns EFI_NOT_READY, then the number of\r | |
116 | // Driver Binding Protocols in the handle database has increased during the call\r | |
117 | // so the connect operation must be restarted\r | |
28a00297 | 118 | //\r |
85658066 | 119 | do {\r |
120 | ReturnStatus = CoreConnectSingleController (\r | |
121 | ControllerHandle,\r | |
122 | DriverImageHandle,\r | |
123 | AlignedRemainingDevicePath\r | |
124 | );\r | |
125 | } while (ReturnStatus == EFI_NOT_READY);\r | |
126 | \r | |
127 | //\r | |
128 | // Free the aligned copy of RemainingDevicePath\r | |
129 | //\r | |
130 | if (AlignedRemainingDevicePath != NULL) {\r | |
131 | CoreFreePool (AlignedRemainingDevicePath);\r | |
28a00297 | 132 | }\r |
133 | \r | |
134 | //\r | |
135 | // If recursive, then connect all drivers to all of ControllerHandle's children\r | |
136 | //\r | |
85658066 | 137 | if (Recursive) {\r |
138 | //\r | |
139 | // Acquire the protocol lock on the handle database so the child handles can be collected\r | |
140 | //\r | |
141 | CoreAcquireProtocolLock ();\r | |
142 | \r | |
143 | //\r | |
144 | // Make sure the DriverBindingHandle is valid\r | |
145 | //\r | |
146 | Status = CoreValidateHandle (ControllerHandle);\r | |
147 | if (EFI_ERROR (Status)) {\r | |
148 | //\r | |
149 | // Release the protocol lock on the handle database\r | |
150 | //\r | |
151 | CoreReleaseProtocolLock ();\r | |
152 | \r | |
153 | return ReturnStatus;\r | |
154 | }\r | |
155 | \r | |
156 | \r | |
157 | //\r | |
158 | // Count ControllerHandle's children\r | |
159 | //\r | |
160 | for (Link = Handle->Protocols.ForwardLink, ChildHandleCount = 0; Link != &Handle->Protocols; Link = Link->ForwardLink) {\r | |
161 | Prot = CR(Link, PROTOCOL_INTERFACE, Link, PROTOCOL_INTERFACE_SIGNATURE);\r | |
162 | for (ProtLink = Prot->OpenList.ForwardLink; \r | |
163 | ProtLink != &Prot->OpenList; \r | |
164 | ProtLink = ProtLink->ForwardLink) {\r | |
165 | OpenData = CR (ProtLink, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
166 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {\r | |
167 | ChildHandleCount++;\r | |
168 | }\r | |
169 | }\r | |
170 | }\r | |
171 | \r | |
172 | //\r | |
173 | // Allocate a handle buffer for ControllerHandle's children\r | |
174 | //\r | |
175 | ChildHandleBuffer = CoreAllocateBootServicesPool (ChildHandleCount * sizeof(EFI_HANDLE));\r | |
176 | \r | |
177 | //\r | |
178 | // Fill in a handle buffer with ControllerHandle's children\r | |
179 | //\r | |
180 | for (Link = Handle->Protocols.ForwardLink, ChildHandleCount = 0; Link != &Handle->Protocols; Link = Link->ForwardLink) {\r | |
181 | Prot = CR(Link, PROTOCOL_INTERFACE, Link, PROTOCOL_INTERFACE_SIGNATURE);\r | |
182 | for (ProtLink = Prot->OpenList.ForwardLink; \r | |
183 | ProtLink != &Prot->OpenList; \r | |
184 | ProtLink = ProtLink->ForwardLink) {\r | |
28a00297 | 185 | OpenData = CR (ProtLink, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r |
186 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {\r | |
85658066 | 187 | ChildHandleBuffer[ChildHandleCount] = OpenData->ControllerHandle;\r |
188 | ChildHandleCount++;\r | |
189 | }\r | |
190 | }\r | |
191 | }\r | |
192 | \r | |
193 | //\r | |
194 | // Release the protocol lock on the handle database\r | |
195 | //\r | |
196 | CoreReleaseProtocolLock ();\r | |
197 | \r | |
198 | //\r | |
199 | // Recursively connect each child handle\r | |
200 | //\r | |
201 | for (Index = 0; Index < ChildHandleCount; Index++) {\r | |
202 | CoreConnectController (\r | |
203 | ChildHandleBuffer[Index],\r | |
204 | NULL,\r | |
205 | NULL,\r | |
206 | TRUE\r | |
207 | ); \r | |
208 | }\r | |
209 | \r | |
210 | //\r | |
211 | // Free the handle buffer of ControllerHandle's children\r | |
212 | //\r | |
213 | CoreFreePool (ChildHandleBuffer);\r | |
214 | }\r | |
215 | \r | |
216 | //\r | |
217 | // If a Stop() function has been called one or more time successfully, then attempt to \r | |
218 | // repair the stale DeviceHandle fields of the Loaded Image Protocols\r | |
219 | //\r | |
220 | if (mRepairLoadedImage) {\r | |
221 | //\r | |
222 | // Assume that all Loaded Image Protocols can be repaired\r | |
223 | //\r | |
224 | mRepairLoadedImage = FALSE;\r | |
225 | \r | |
226 | //\r | |
227 | // Get list of all Loaded Image Protocol Instances\r | |
228 | //\r | |
229 | Status = CoreLocateHandleBuffer (\r | |
230 | ByProtocol, \r | |
231 | &gEfiLoadedImageProtocolGuid, \r | |
232 | NULL,\r | |
233 | &LoadedImageHandleCount, \r | |
234 | &LoadedImageHandleBuffer\r | |
235 | );\r | |
236 | if (!EFI_ERROR (Status) && LoadedImageHandleCount != 0) {\r | |
237 | for (Index = 0; Index < LoadedImageHandleCount; Index++) {\r | |
238 | //\r | |
239 | // Retrieve the Loaded Image Protocol\r | |
240 | //\r | |
241 | Image = CoreLoadedImageInfo (LoadedImageHandleBuffer[Index]);\r | |
242 | if (Image != NULL) {\r | |
243 | //\r | |
244 | // Check to see if the DeviceHandle field is a valid handle\r | |
245 | //\r | |
246 | Status = CoreValidateHandle (Image->Info.DeviceHandle);\r | |
247 | if (EFI_ERROR (Status)) {\r | |
248 | //\r | |
249 | // The DeviceHandle field is not valid.\r | |
250 | // Attempt to locate a device handle with a device path that matches the one\r | |
251 | // that was used to originally load the image\r | |
252 | //\r | |
253 | DevicePath = Image->DeviceHandleDevicePath;\r | |
254 | if (DevicePath != NULL) {\r | |
255 | Status = CoreLocateDevicePath (&gEfiDevicePathProtocolGuid, &DevicePath, &DeviceHandle);\r | |
256 | if (!EFI_ERROR (Status) && (DeviceHandle != NULL_HANDLE) && IsDevicePathEnd(DevicePath)) {\r | |
257 | //\r | |
258 | // A device handle with a matching device path was found, so update the Loaded Image Protocol\r | |
259 | // with the device handle discovered\r | |
260 | //\r | |
261 | Image->Info.DeviceHandle = DeviceHandle;\r | |
262 | } else {\r | |
263 | //\r | |
264 | // There is still at least one Loaded Image Protocol that requires repair\r | |
265 | //\r | |
266 | mRepairLoadedImage = TRUE;\r | |
267 | }\r | |
268 | }\r | |
269 | }\r | |
28a00297 | 270 | }\r |
85658066 | 271 | }\r |
272 | CoreFreePool (LoadedImageHandleBuffer);\r | |
28a00297 | 273 | }\r |
274 | }\r | |
85658066 | 275 | \r |
28a00297 | 276 | return ReturnStatus;\r |
277 | }\r | |
278 | \r | |
28a00297 | 279 | VOID\r |
280 | AddSortedDriverBindingProtocol (\r | |
281 | IN EFI_HANDLE DriverBindingHandle,\r | |
282 | IN OUT UINTN *NumberOfSortedDriverBindingProtocols, \r | |
283 | IN OUT EFI_DRIVER_BINDING_PROTOCOL **SortedDriverBindingProtocols,\r | |
284 | IN UINTN DriverBindingHandleCount,\r | |
285 | IN OUT EFI_HANDLE *DriverBindingHandleBuffer\r | |
286 | )\r | |
287 | /*++\r | |
288 | \r | |
289 | Routine Description:\r | |
290 | \r | |
291 | Add Driver Binding Protocols from Context Driver Image Handles to sorted \r | |
292 | Driver Binding Protocol list.\r | |
293 | \r | |
294 | Arguments:\r | |
295 | \r | |
296 | DriverBindingHandle - Handle of the driver binding protocol.\r | |
297 | \r | |
298 | NumberOfSortedDriverBindingProtocols - Number Of sorted driver binding protocols\r | |
299 | \r | |
300 | SortedDriverBindingProtocols - The sorted protocol list. \r | |
301 | \r | |
302 | DriverBindingHandleCount - Driver Binding Handle Count.\r | |
303 | \r | |
304 | DriverBindingHandleBuffer - The buffer of driver binding protocol to be modified.\r | |
305 | \r | |
306 | Returns:\r | |
307 | \r | |
308 | None.\r | |
309 | \r | |
310 | --*/\r | |
311 | {\r | |
312 | EFI_STATUS Status;\r | |
313 | EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r | |
314 | UINTN Index;\r | |
315 | \r | |
316 | //\r | |
317 | // Make sure the DriverBindingHandle is valid\r | |
318 | //\r | |
319 | Status = CoreValidateHandle (DriverBindingHandle);\r | |
320 | if (EFI_ERROR (Status)) {\r | |
321 | return;\r | |
322 | }\r | |
323 | \r | |
324 | //\r | |
325 | // Retrieve the Driver Binding Protocol from DriverBindingHandle\r | |
326 | //\r | |
327 | Status = CoreHandleProtocol(\r | |
328 | DriverBindingHandle,\r | |
329 | &gEfiDriverBindingProtocolGuid,\r | |
330 | (VOID **)&DriverBinding\r | |
331 | );\r | |
332 | //\r | |
333 | // If DriverBindingHandle does not support the Driver Binding Protocol then return\r | |
334 | //\r | |
335 | if (EFI_ERROR (Status) || DriverBinding == NULL) {\r | |
336 | return;\r | |
337 | }\r | |
338 | \r | |
339 | //\r | |
340 | // See if DriverBinding is already in the sorted list\r | |
341 | //\r | |
85658066 | 342 | for (Index = 0; Index < *NumberOfSortedDriverBindingProtocols && Index < DriverBindingHandleCount; Index++) {\r |
28a00297 | 343 | if (DriverBinding == SortedDriverBindingProtocols[Index]) {\r |
344 | return;\r | |
345 | }\r | |
346 | }\r | |
347 | \r | |
348 | //\r | |
349 | // Add DriverBinding to the end of the list\r | |
350 | //\r | |
85658066 | 351 | if (*NumberOfSortedDriverBindingProtocols < DriverBindingHandleCount) {\r |
352 | SortedDriverBindingProtocols[*NumberOfSortedDriverBindingProtocols] = DriverBinding;\r | |
353 | }\r | |
28a00297 | 354 | *NumberOfSortedDriverBindingProtocols = *NumberOfSortedDriverBindingProtocols + 1;\r |
355 | \r | |
356 | //\r | |
357 | // Mark the cooresponding handle in DriverBindingHandleBuffer as used\r | |
358 | //\r | |
359 | for (Index = 0; Index < DriverBindingHandleCount; Index++) {\r | |
360 | if (DriverBindingHandleBuffer[Index] == DriverBindingHandle) {\r | |
361 | DriverBindingHandleBuffer[Index] = NULL;\r | |
362 | }\r | |
363 | }\r | |
364 | }\r | |
365 | \r | |
28a00297 | 366 | EFI_STATUS \r |
367 | CoreConnectSingleController (\r | |
368 | IN EFI_HANDLE ControllerHandle,\r | |
369 | IN EFI_HANDLE *ContextDriverImageHandles OPTIONAL,\r | |
370 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL \r | |
371 | )\r | |
372 | /*++\r | |
373 | \r | |
374 | Routine Description:\r | |
375 | \r | |
376 | Connects a controller to a driver.\r | |
377 | \r | |
378 | Arguments:\r | |
379 | \r | |
380 | ControllerHandle - Handle of the controller to be connected.\r | |
381 | ContextDriverImageHandles - DriverImageHandle A pointer to an ordered list of driver image handles.\r | |
382 | RemainingDevicePath - RemainingDevicePath A pointer to the device path that specifies a child \r | |
383 | of the controller specified by ControllerHandle.\r | |
384 | \r | |
385 | Returns:\r | |
386 | \r | |
387 | EFI_SUCCESS - One or more drivers were connected to ControllerHandle.\r | |
388 | EFI_OUT_OF_RESOURCES - No enough system resources to complete the request.\r | |
389 | EFI_NOT_FOUND - No drivers were connected to ControllerHandle.\r | |
390 | \r | |
391 | --*/\r | |
392 | {\r | |
393 | EFI_STATUS Status;\r | |
394 | UINTN Index;\r | |
395 | EFI_HANDLE DriverImageHandle;\r | |
396 | EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *PlatformDriverOverride;\r | |
397 | EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *BusSpecificDriverOverride;\r | |
398 | UINTN DriverBindingHandleCount;\r | |
399 | EFI_HANDLE *DriverBindingHandleBuffer;\r | |
400 | EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r | |
401 | UINTN NumberOfSortedDriverBindingProtocols;\r | |
402 | EFI_DRIVER_BINDING_PROTOCOL **SortedDriverBindingProtocols;\r | |
403 | UINT32 HighestVersion;\r | |
404 | UINTN HighestIndex;\r | |
405 | UINTN SortIndex;\r | |
406 | BOOLEAN OneStarted;\r | |
407 | BOOLEAN DriverFound;\r | |
408 | EFI_HANDLE DriverBindingHandle;\r | |
409 | \r | |
410 | //\r | |
411 | // DriverBindingHandle is used for performance measurement, initialize it here just in case.\r | |
412 | //\r | |
413 | DriverBindingHandle = NULL;\r | |
414 | //\r | |
415 | // Initialize local variables\r | |
416 | //\r | |
417 | DriverBindingHandleCount = 0;\r | |
418 | DriverBindingHandleBuffer = NULL;\r | |
419 | NumberOfSortedDriverBindingProtocols = 0;\r | |
420 | SortedDriverBindingProtocols = NULL;\r | |
421 | \r | |
422 | //\r | |
423 | // Get list of all Driver Binding Protocol Instances\r | |
424 | //\r | |
425 | Status = CoreLocateHandleBuffer (\r | |
426 | ByProtocol, \r | |
427 | &gEfiDriverBindingProtocolGuid, \r | |
428 | NULL,\r | |
429 | &DriverBindingHandleCount, \r | |
430 | &DriverBindingHandleBuffer\r | |
431 | );\r | |
432 | if (EFI_ERROR (Status) || (DriverBindingHandleCount == 0)) {\r | |
433 | return EFI_NOT_FOUND;\r | |
434 | }\r | |
435 | \r | |
436 | //\r | |
437 | // Allocate a duplicate array for the sorted Driver Binding Protocol Instances\r | |
438 | //\r | |
439 | SortedDriverBindingProtocols = CoreAllocateBootServicesPool (sizeof (VOID *) * DriverBindingHandleCount);\r | |
440 | if (SortedDriverBindingProtocols == NULL) {\r | |
441 | CoreFreePool (DriverBindingHandleBuffer);\r | |
442 | return EFI_OUT_OF_RESOURCES;\r | |
443 | }\r | |
444 | \r | |
445 | //\r | |
446 | // Add Driver Binding Protocols from Context Driver Image Handles first\r | |
447 | //\r | |
448 | if (ContextDriverImageHandles != NULL) {\r | |
449 | for (Index = 0; ContextDriverImageHandles[Index] != NULL; Index++) {\r | |
450 | AddSortedDriverBindingProtocol (\r | |
451 | ContextDriverImageHandles[Index],\r | |
452 | &NumberOfSortedDriverBindingProtocols, \r | |
453 | SortedDriverBindingProtocols,\r | |
454 | DriverBindingHandleCount,\r | |
455 | DriverBindingHandleBuffer\r | |
456 | );\r | |
457 | }\r | |
458 | }\r | |
459 | \r | |
460 | //\r | |
461 | // Add the Platform Driver Override Protocol drivers for ControllerHandle next\r | |
462 | //\r | |
463 | Status = CoreLocateProtocol (\r | |
464 | &gEfiPlatformDriverOverrideProtocolGuid, \r | |
465 | NULL, \r | |
466 | (VOID **)&PlatformDriverOverride\r | |
467 | );\r | |
468 | if (!EFI_ERROR (Status) && (PlatformDriverOverride != NULL)) {\r | |
469 | DriverImageHandle = NULL;\r | |
470 | do {\r | |
471 | Status = PlatformDriverOverride->GetDriver (\r | |
472 | PlatformDriverOverride,\r | |
473 | ControllerHandle,\r | |
474 | &DriverImageHandle\r | |
475 | );\r | |
476 | if (!EFI_ERROR (Status)) {\r | |
477 | AddSortedDriverBindingProtocol (\r | |
478 | DriverImageHandle,\r | |
479 | &NumberOfSortedDriverBindingProtocols, \r | |
480 | SortedDriverBindingProtocols,\r | |
481 | DriverBindingHandleCount,\r | |
482 | DriverBindingHandleBuffer\r | |
483 | );\r | |
484 | }\r | |
485 | } while (!EFI_ERROR (Status));\r | |
486 | }\r | |
487 | \r | |
488 | //\r | |
489 | // Get the Bus Specific Driver Override Protocol instance on the Controller Handle\r | |
490 | //\r | |
491 | Status = CoreHandleProtocol(\r | |
492 | ControllerHandle, \r | |
493 | &gEfiBusSpecificDriverOverrideProtocolGuid, \r | |
494 | (VOID **)&BusSpecificDriverOverride\r | |
495 | );\r | |
496 | if (!EFI_ERROR (Status) && (BusSpecificDriverOverride != NULL)) {\r | |
497 | DriverImageHandle = NULL;\r | |
498 | do {\r | |
499 | Status = BusSpecificDriverOverride->GetDriver (\r | |
500 | BusSpecificDriverOverride,\r | |
501 | &DriverImageHandle\r | |
502 | );\r | |
503 | if (!EFI_ERROR (Status)) {\r | |
504 | AddSortedDriverBindingProtocol (\r | |
505 | DriverImageHandle,\r | |
506 | &NumberOfSortedDriverBindingProtocols, \r | |
507 | SortedDriverBindingProtocols,\r | |
508 | DriverBindingHandleCount,\r | |
509 | DriverBindingHandleBuffer\r | |
510 | );\r | |
511 | }\r | |
512 | } while (!EFI_ERROR (Status));\r | |
513 | }\r | |
514 | \r | |
515 | //\r | |
516 | // Then add all the remaining Driver Binding Protocols\r | |
517 | //\r | |
518 | SortIndex = NumberOfSortedDriverBindingProtocols;\r | |
519 | for (Index = 0; Index < DriverBindingHandleCount; Index++) {\r | |
520 | AddSortedDriverBindingProtocol (\r | |
521 | DriverBindingHandleBuffer[Index],\r | |
522 | &NumberOfSortedDriverBindingProtocols, \r | |
523 | SortedDriverBindingProtocols,\r | |
524 | DriverBindingHandleCount,\r | |
525 | DriverBindingHandleBuffer\r | |
526 | );\r | |
527 | }\r | |
528 | \r | |
529 | //\r | |
530 | // Free the Driver Binding Handle Buffer\r | |
531 | //\r | |
532 | CoreFreePool (DriverBindingHandleBuffer);\r | |
533 | \r | |
85658066 | 534 | //\r |
535 | // If the number of Driver Binding Protocols has increased since this function started, then return\r | |
536 | // EFI_NOT_READY, so it will be restarted\r | |
537 | //\r | |
538 | if (NumberOfSortedDriverBindingProtocols > DriverBindingHandleCount) {\r | |
539 | //\r | |
540 | // Free any buffers that were allocated with AllocatePool()\r | |
541 | //\r | |
542 | CoreFreePool (SortedDriverBindingProtocols);\r | |
543 | \r | |
544 | return EFI_NOT_READY;\r | |
545 | }\r | |
546 | \r | |
28a00297 | 547 | //\r |
548 | // Sort the remaining DriverBinding Protocol based on their Version field from\r | |
549 | // highest to lowest.\r | |
550 | //\r | |
551 | for ( ; SortIndex < NumberOfSortedDriverBindingProtocols; SortIndex++) {\r | |
552 | HighestVersion = SortedDriverBindingProtocols[SortIndex]->Version;\r | |
553 | HighestIndex = SortIndex;\r | |
554 | for (Index = SortIndex + 1; Index < NumberOfSortedDriverBindingProtocols; Index++) {\r | |
555 | if (SortedDriverBindingProtocols[Index]->Version > HighestVersion) {\r | |
556 | HighestVersion = SortedDriverBindingProtocols[Index]->Version;\r | |
557 | HighestIndex = Index;\r | |
558 | }\r | |
559 | }\r | |
560 | if (SortIndex != HighestIndex) {\r | |
561 | DriverBinding = SortedDriverBindingProtocols[SortIndex];\r | |
562 | SortedDriverBindingProtocols[SortIndex] = SortedDriverBindingProtocols[HighestIndex];\r | |
563 | SortedDriverBindingProtocols[HighestIndex] = DriverBinding;\r | |
564 | }\r | |
565 | }\r | |
566 | \r | |
567 | //\r | |
568 | // Loop until no more drivers can be started on ControllerHandle\r | |
569 | //\r | |
570 | OneStarted = FALSE;\r | |
571 | do {\r | |
572 | \r | |
573 | //\r | |
574 | // Loop through the sorted Driver Binding Protocol Instances in order, and see if\r | |
575 | // any of the Driver Binding Protocols support the controller specified by \r | |
576 | // ControllerHandle.\r | |
577 | //\r | |
578 | DriverBinding = NULL;\r | |
579 | DriverFound = FALSE;\r | |
580 | for (Index = 0; (Index < NumberOfSortedDriverBindingProtocols) && !DriverFound; Index++) {\r | |
581 | if (SortedDriverBindingProtocols[Index] != NULL) {\r | |
582 | DriverBinding = SortedDriverBindingProtocols[Index];\r | |
583 | Status = DriverBinding->Supported(\r | |
584 | DriverBinding, \r | |
585 | ControllerHandle,\r | |
586 | RemainingDevicePath\r | |
587 | );\r | |
588 | if (!EFI_ERROR (Status)) {\r | |
589 | SortedDriverBindingProtocols[Index] = NULL;\r | |
590 | DriverFound = TRUE;\r | |
591 | \r | |
592 | //\r | |
593 | // A driver was found that supports ControllerHandle, so attempt to start the driver\r | |
594 | // on ControllerHandle.\r | |
595 | //\r | |
596 | PERF_CODE_BEGIN ();\r | |
597 | GetHandleFromDriverBinding (DriverBinding, &DriverBindingHandle);\r | |
598 | PERF_CODE_END ();\r | |
599 | \r | |
600 | PERF_START (DriverBindingHandle, DRIVERBINDING_START_TOK, NULL, 0);\r | |
601 | Status = DriverBinding->Start (\r | |
602 | DriverBinding, \r | |
603 | ControllerHandle,\r | |
604 | RemainingDevicePath\r | |
605 | );\r | |
606 | PERF_END (DriverBindingHandle, DRIVERBINDING_START_TOK, NULL, 0);\r | |
607 | \r | |
608 | if (!EFI_ERROR (Status)) {\r | |
609 | //\r | |
610 | // The driver was successfully started on ControllerHandle, so set a flag\r | |
611 | //\r | |
612 | OneStarted = TRUE;\r | |
613 | }\r | |
614 | }\r | |
615 | }\r | |
616 | }\r | |
617 | } while (DriverFound);\r | |
618 | \r | |
619 | //\r | |
620 | // Free any buffers that were allocated with AllocatePool()\r | |
621 | //\r | |
622 | CoreFreePool (SortedDriverBindingProtocols);\r | |
623 | \r | |
624 | //\r | |
625 | // If at least one driver was started on ControllerHandle, then return EFI_SUCCESS.\r | |
626 | //\r | |
627 | if (OneStarted) {\r | |
628 | return EFI_SUCCESS;\r | |
629 | } \r | |
630 | \r | |
631 | //\r | |
632 | // If no drivers started and RemainingDevicePath is an End Device Path Node, then return EFI_SUCCESS\r | |
633 | //\r | |
634 | if (RemainingDevicePath != NULL) {\r | |
635 | if (IsDevicePathEnd (RemainingDevicePath)) {\r | |
636 | return EFI_SUCCESS;\r | |
637 | }\r | |
638 | } \r | |
639 | \r | |
640 | //\r | |
641 | // Otherwise, no drivers were started on ControllerHandle, so return EFI_NOT_FOUND\r | |
642 | //\r | |
643 | return EFI_NOT_FOUND;\r | |
644 | }\r | |
645 | \r | |
646 | \r | |
647 | EFI_STATUS \r | |
648 | EFIAPI\r | |
649 | CoreDisconnectController (\r | |
650 | IN EFI_HANDLE ControllerHandle,\r | |
651 | IN EFI_HANDLE DriverImageHandle OPTIONAL,\r | |
652 | IN EFI_HANDLE ChildHandle OPTIONAL\r | |
653 | )\r | |
654 | /*++\r | |
655 | \r | |
656 | Routine Description:\r | |
657 | \r | |
658 | Disonnects a controller from a driver\r | |
659 | \r | |
660 | Arguments:\r | |
661 | \r | |
662 | ControllerHandle - ControllerHandle The handle of the controller from which driver(s) \r | |
663 | are to be disconnected.\r | |
664 | DriverImageHandle - DriverImageHandle The driver to disconnect from ControllerHandle.\r | |
665 | ChildHandle - ChildHandle The handle of the child to destroy.\r | |
666 | \r | |
667 | Returns:\r | |
668 | \r | |
669 | EFI_SUCCESS - One or more drivers were disconnected from the controller.\r | |
670 | EFI_SUCCESS - On entry, no drivers are managing ControllerHandle.\r | |
671 | EFI_SUCCESS - DriverImageHandle is not NULL, and on entry DriverImageHandle is not managing ControllerHandle.\r | |
672 | EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r | |
673 | EFI_INVALID_PARAMETER - DriverImageHandle is not NULL, and it is not a valid EFI_HANDLE.\r | |
674 | EFI_INVALID_PARAMETER - ChildHandle is not NULL, and it is not a valid EFI_HANDLE.\r | |
675 | EFI_OUT_OF_RESOURCES - There are not enough resources available to disconnect any drivers from ControllerHandle.\r | |
676 | EFI_DEVICE_ERROR - The controller could not be disconnected because of a device error.\r | |
677 | \r | |
678 | --*/\r | |
679 | {\r | |
680 | EFI_STATUS Status;\r | |
681 | IHANDLE *Handle;\r | |
682 | EFI_HANDLE *DriverImageHandleBuffer;\r | |
683 | EFI_HANDLE *ChildBuffer;\r | |
684 | UINTN Index;\r | |
685 | UINTN HandleIndex;\r | |
686 | UINTN DriverImageHandleCount;\r | |
687 | UINTN ChildrenToStop;\r | |
688 | UINTN ChildBufferCount;\r | |
689 | UINTN StopCount;\r | |
690 | BOOLEAN Duplicate;\r | |
691 | BOOLEAN ChildHandleValid;\r | |
692 | BOOLEAN DriverImageHandleValid;\r | |
693 | LIST_ENTRY *Link;\r | |
694 | LIST_ENTRY *ProtLink;\r | |
695 | OPEN_PROTOCOL_DATA *OpenData;\r | |
696 | PROTOCOL_INTERFACE *Prot;\r | |
697 | EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r | |
85658066 | 698 | EFI_HANDLE *LoadedImageHandleBuffer;\r |
699 | UINTN LoadedImageHandleCount;\r | |
700 | LOADED_IMAGE_PRIVATE_DATA *Image;\r | |
28a00297 | 701 | \r |
702 | //\r | |
703 | // Make sure ControllerHandle is valid\r | |
704 | //\r | |
705 | Status = CoreValidateHandle (ControllerHandle);\r | |
706 | if (EFI_ERROR (Status)) {\r | |
707 | return Status;\r | |
708 | }\r | |
709 | \r | |
710 | //\r | |
711 | // Make sure ChildHandle is valid if it is not NULL\r | |
712 | //\r | |
713 | if (ChildHandle != NULL) {\r | |
714 | Status = CoreValidateHandle (ChildHandle);\r | |
715 | if (EFI_ERROR (Status)) {\r | |
716 | return Status;\r | |
717 | }\r | |
718 | }\r | |
719 | \r | |
720 | Handle = ControllerHandle;\r | |
721 | \r | |
722 | //\r | |
723 | // Get list of drivers that are currently managing ControllerHandle\r | |
724 | //\r | |
725 | DriverImageHandleBuffer = NULL;\r | |
726 | DriverImageHandleCount = 1; \r | |
727 | \r | |
728 | if (DriverImageHandle == NULL) {\r | |
729 | //\r | |
730 | // Look at each protocol interface for a match\r | |
731 | //\r | |
732 | DriverImageHandleCount = 0;\r | |
733 | \r | |
734 | CoreAcquireProtocolLock ();\r | |
735 | for (Link = Handle->Protocols.ForwardLink; Link != &Handle->Protocols; Link = Link->ForwardLink) {\r | |
736 | Prot = CR(Link, PROTOCOL_INTERFACE, Link, PROTOCOL_INTERFACE_SIGNATURE);\r | |
737 | for (ProtLink = Prot->OpenList.ForwardLink; \r | |
738 | ProtLink != &Prot->OpenList; \r | |
739 | ProtLink = ProtLink->ForwardLink) {\r | |
740 | OpenData = CR (ProtLink, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
741 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) != 0) {\r | |
742 | DriverImageHandleCount++;\r | |
743 | }\r | |
744 | }\r | |
745 | }\r | |
746 | CoreReleaseProtocolLock ();\r | |
747 | \r | |
748 | //\r | |
749 | // If there are no drivers managing this controller, then return EFI_SUCCESS\r | |
750 | //\r | |
751 | if (DriverImageHandleCount == 0) {\r | |
752 | Status = EFI_SUCCESS;\r | |
753 | goto Done;\r | |
754 | }\r | |
755 | \r | |
756 | DriverImageHandleBuffer = CoreAllocateBootServicesPool (sizeof (EFI_HANDLE) * DriverImageHandleCount);\r | |
757 | if (DriverImageHandleBuffer == NULL) {\r | |
758 | Status = EFI_OUT_OF_RESOURCES;\r | |
759 | goto Done;\r | |
760 | }\r | |
761 | \r | |
762 | DriverImageHandleCount = 0;\r | |
763 | \r | |
764 | CoreAcquireProtocolLock ();\r | |
765 | for (Link = Handle->Protocols.ForwardLink; Link != &Handle->Protocols; Link = Link->ForwardLink) {\r | |
766 | Prot = CR(Link, PROTOCOL_INTERFACE, Link, PROTOCOL_INTERFACE_SIGNATURE);\r | |
767 | for (ProtLink = Prot->OpenList.ForwardLink; \r | |
768 | ProtLink != &Prot->OpenList; \r | |
769 | ProtLink = ProtLink->ForwardLink) {\r | |
770 | OpenData = CR (ProtLink, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
771 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) != 0) {\r | |
772 | Duplicate = FALSE;\r | |
773 | for (Index = 0; Index< DriverImageHandleCount; Index++) {\r | |
774 | if (DriverImageHandleBuffer[Index] == OpenData->AgentHandle) {\r | |
775 | Duplicate = TRUE;\r | |
776 | break;\r | |
777 | }\r | |
778 | }\r | |
779 | if (!Duplicate) {\r | |
780 | DriverImageHandleBuffer[DriverImageHandleCount] = OpenData->AgentHandle;\r | |
781 | DriverImageHandleCount++;\r | |
782 | }\r | |
783 | }\r | |
784 | }\r | |
785 | }\r | |
786 | CoreReleaseProtocolLock ();\r | |
787 | }\r | |
788 | \r | |
789 | StopCount = 0;\r | |
790 | for (HandleIndex = 0; HandleIndex < DriverImageHandleCount; HandleIndex++) {\r | |
791 | \r | |
792 | if (DriverImageHandleBuffer != NULL) {\r | |
793 | DriverImageHandle = DriverImageHandleBuffer[HandleIndex];\r | |
794 | }\r | |
795 | \r | |
796 | //\r | |
797 | // Get the Driver Binding Protocol of the driver that is managing this controller\r | |
798 | //\r | |
799 | Status = CoreHandleProtocol (\r | |
800 | DriverImageHandle, \r | |
801 | &gEfiDriverBindingProtocolGuid, \r | |
802 | (VOID **)&DriverBinding\r | |
803 | );\r | |
804 | if (EFI_ERROR (Status)) {\r | |
805 | Status = EFI_INVALID_PARAMETER;\r | |
806 | goto Done;\r | |
807 | }\r | |
808 | \r | |
809 | //\r | |
810 | // Look at each protocol interface for a match\r | |
811 | //\r | |
812 | DriverImageHandleValid = FALSE;\r | |
813 | ChildBufferCount = 0;\r | |
814 | \r | |
815 | CoreAcquireProtocolLock ();\r | |
816 | for (Link = Handle->Protocols.ForwardLink; Link != &Handle->Protocols; Link = Link->ForwardLink) {\r | |
817 | Prot = CR(Link, PROTOCOL_INTERFACE, Link, PROTOCOL_INTERFACE_SIGNATURE);\r | |
818 | for (ProtLink = Prot->OpenList.ForwardLink; \r | |
819 | ProtLink != &Prot->OpenList; \r | |
820 | ProtLink = ProtLink->ForwardLink) {\r | |
821 | OpenData = CR (ProtLink, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
822 | if (OpenData->AgentHandle == DriverImageHandle) {\r | |
823 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {\r | |
824 | ChildBufferCount++;\r | |
825 | } \r | |
826 | if ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) != 0) {\r | |
827 | DriverImageHandleValid = TRUE;\r | |
828 | }\r | |
829 | }\r | |
830 | }\r | |
831 | }\r | |
832 | CoreReleaseProtocolLock ();\r | |
833 | \r | |
834 | if (DriverImageHandleValid) {\r | |
835 | ChildHandleValid = FALSE;\r | |
836 | ChildBuffer = NULL;\r | |
837 | if (ChildBufferCount != 0) {\r | |
838 | ChildBuffer = CoreAllocateBootServicesPool (sizeof (EFI_HANDLE) * ChildBufferCount);\r | |
839 | if (ChildBuffer == NULL) {\r | |
840 | Status = EFI_OUT_OF_RESOURCES;\r | |
841 | goto Done;\r | |
842 | }\r | |
843 | \r | |
844 | ChildBufferCount = 0;\r | |
845 | \r | |
846 | CoreAcquireProtocolLock ();\r | |
847 | for (Link = Handle->Protocols.ForwardLink; Link != &Handle->Protocols; Link = Link->ForwardLink) {\r | |
848 | Prot = CR(Link, PROTOCOL_INTERFACE, Link, PROTOCOL_INTERFACE_SIGNATURE);\r | |
849 | for (ProtLink = Prot->OpenList.ForwardLink; \r | |
850 | ProtLink != &Prot->OpenList; \r | |
851 | ProtLink = ProtLink->ForwardLink) {\r | |
852 | OpenData = CR (ProtLink, OPEN_PROTOCOL_DATA, Link, OPEN_PROTOCOL_DATA_SIGNATURE);\r | |
853 | if ((OpenData->AgentHandle == DriverImageHandle) &&\r | |
854 | ((OpenData->Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0)) {\r | |
855 | Duplicate = FALSE;\r | |
856 | for (Index = 0; Index < ChildBufferCount; Index++) {\r | |
857 | if (ChildBuffer[Index] == OpenData->ControllerHandle) {\r | |
858 | Duplicate = TRUE;\r | |
859 | break;\r | |
860 | }\r | |
861 | }\r | |
862 | if (!Duplicate) {\r | |
863 | ChildBuffer[ChildBufferCount] = OpenData->ControllerHandle;\r | |
864 | if (ChildHandle == ChildBuffer[ChildBufferCount]) {\r | |
865 | ChildHandleValid = TRUE;\r | |
866 | }\r | |
867 | ChildBufferCount++;\r | |
868 | }\r | |
869 | }\r | |
870 | }\r | |
871 | }\r | |
872 | CoreReleaseProtocolLock ();\r | |
873 | }\r | |
874 | \r | |
875 | if (ChildHandle == NULL || ChildHandleValid) {\r | |
876 | ChildrenToStop = 0;\r | |
877 | Status = EFI_SUCCESS;\r | |
878 | if (ChildBufferCount > 0) {\r | |
879 | if (ChildHandle != NULL) {\r | |
880 | ChildrenToStop = 1;\r | |
881 | Status = DriverBinding->Stop (DriverBinding, ControllerHandle, ChildrenToStop, &ChildHandle);\r | |
882 | } else {\r | |
883 | ChildrenToStop = ChildBufferCount;\r | |
884 | Status = DriverBinding->Stop (DriverBinding, ControllerHandle, ChildrenToStop, ChildBuffer);\r | |
885 | }\r | |
886 | }\r | |
887 | if (!EFI_ERROR (Status) && ((ChildHandle == NULL) || (ChildBufferCount == ChildrenToStop))) {\r | |
888 | Status = DriverBinding->Stop (DriverBinding, ControllerHandle, 0, NULL);\r | |
889 | }\r | |
890 | if (!EFI_ERROR (Status)) {\r | |
891 | StopCount++;\r | |
892 | }\r | |
893 | }\r | |
894 | \r | |
895 | if (ChildBuffer != NULL) {\r | |
896 | CoreFreePool (ChildBuffer);\r | |
897 | }\r | |
898 | }\r | |
899 | }\r | |
900 | \r | |
901 | if (StopCount > 0) {\r | |
85658066 | 902 | //\r |
903 | // If the Loaded Image Protocols do not already need to be repaired, then\r | |
904 | // check the status of the DeviceHandle field of all Loaded Image Protocols\r | |
905 | // to determine if any of them now need repair because a sucessful Stop()\r | |
906 | // may have destroyed the DeviceHandle value in the Loaded Image Protocol\r | |
907 | //\r | |
908 | if (!mRepairLoadedImage) {\r | |
909 | //\r | |
910 | // Get list of all Loaded Image Protocol Instances\r | |
911 | //\r | |
912 | Status = CoreLocateHandleBuffer (\r | |
913 | ByProtocol, \r | |
914 | &gEfiLoadedImageProtocolGuid, \r | |
915 | NULL,\r | |
916 | &LoadedImageHandleCount, \r | |
917 | &LoadedImageHandleBuffer\r | |
918 | );\r | |
919 | if (!EFI_ERROR (Status) && LoadedImageHandleCount != 0) {\r | |
920 | for (Index = 0; Index < LoadedImageHandleCount; Index++) {\r | |
921 | //\r | |
922 | // Retrieve the Loaded Image Protocol\r | |
923 | //\r | |
924 | Image = CoreLoadedImageInfo (LoadedImageHandleBuffer[Index]);\r | |
925 | if (Image != NULL) {\r | |
926 | //\r | |
927 | // Check to see if the DeviceHandle field is a valid handle\r | |
928 | //\r | |
929 | Status = CoreValidateHandle (Image->Info.DeviceHandle);\r | |
930 | if (EFI_ERROR (Status)) {\r | |
931 | //\r | |
932 | // The DeviceHandle field is not longer a valid handle. This means\r | |
933 | // that future calls to ConnectController() need to attemp to repair\r | |
934 | // the Loaded Image Protocols with invalid DeviceHandle fields. Set \r | |
935 | // the flag used by ConnectController().\r | |
936 | //\r | |
937 | mRepairLoadedImage = TRUE;\r | |
938 | break;\r | |
939 | }\r | |
940 | }\r | |
941 | }\r | |
942 | CoreFreePool (LoadedImageHandleBuffer);\r | |
943 | }\r | |
944 | }\r | |
28a00297 | 945 | Status = EFI_SUCCESS;\r |
946 | } else {\r | |
947 | Status = EFI_NOT_FOUND;\r | |
948 | }\r | |
949 | \r | |
950 | Done: \r | |
951 | \r | |
952 | if (DriverImageHandleBuffer != NULL) {\r | |
953 | CoreFreePool (DriverImageHandleBuffer);\r | |
954 | }\r | |
955 | \r | |
956 | return Status;\r | |
957 | }\r | |
958 | \r | |
28a00297 | 959 | EFI_STATUS\r |
960 | GetHandleFromDriverBinding (\r | |
961 | IN EFI_DRIVER_BINDING_PROTOCOL *DriverBindingNeed,\r | |
962 | OUT EFI_HANDLE *Handle \r | |
963 | )\r | |
964 | /*++\r | |
965 | \r | |
966 | Routine Description:\r | |
967 | \r | |
968 | Locate the driver binding handle which a specified driver binding protocol installed on.\r | |
969 | \r | |
970 | Arguments:\r | |
971 | \r | |
972 | DriverBindingNeed - The specified driver binding protocol.\r | |
973 | \r | |
974 | Handle - The driver binding handle which the protocol installed on.\r | |
975 | \r | |
976 | \r | |
977 | Returns:\r | |
978 | \r | |
979 | EFI_NOT_FOUND - Could not find the handle.\r | |
980 | \r | |
981 | EFI_SUCCESS - Successfully find the associated driver binding handle.\r | |
982 | \r | |
983 | --*/ \r | |
984 | {\r | |
985 | EFI_STATUS Status ;\r | |
986 | EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r | |
987 | UINTN DriverBindingHandleCount;\r | |
988 | EFI_HANDLE *DriverBindingHandleBuffer;\r | |
989 | UINTN Index;\r | |
990 | \r | |
991 | DriverBindingHandleCount = 0;\r | |
992 | DriverBindingHandleBuffer = NULL;\r | |
993 | *Handle = NULL_HANDLE;\r | |
994 | Status = CoreLocateHandleBuffer (\r | |
995 | ByProtocol, \r | |
996 | &gEfiDriverBindingProtocolGuid, \r | |
997 | NULL,\r | |
998 | &DriverBindingHandleCount, \r | |
999 | &DriverBindingHandleBuffer\r | |
1000 | );\r | |
1001 | if (EFI_ERROR (Status) || DriverBindingHandleCount == 0) {\r | |
1002 | return EFI_NOT_FOUND;\r | |
1003 | }\r | |
1004 | \r | |
1005 | for (Index = 0 ; Index < DriverBindingHandleCount; Index++ ) {\r | |
1006 | Status = CoreOpenProtocol(\r | |
1007 | DriverBindingHandleBuffer[Index],\r | |
1008 | &gEfiDriverBindingProtocolGuid,\r | |
1009 | (VOID **)&DriverBinding,\r | |
1010 | gDxeCoreImageHandle,\r | |
1011 | NULL,\r | |
1012 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
1013 | );\r | |
1014 | \r | |
1015 | if (!EFI_ERROR (Status) && DriverBinding != NULL) {\r | |
1016 | \r | |
1017 | if ( DriverBinding == DriverBindingNeed ) {\r | |
1018 | *Handle = DriverBindingHandleBuffer[Index];\r | |
1019 | CoreFreePool (DriverBindingHandleBuffer); \r | |
1020 | return EFI_SUCCESS ;\r | |
1021 | }\r | |
1022 | }\r | |
1023 | }\r | |
1024 | \r | |
1025 | CoreFreePool (DriverBindingHandleBuffer);\r | |
1026 | return EFI_NOT_FOUND ;\r | |
1027 | }\r | |
1028 | \r |