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1 | /** @file\r |
2 | Driver Binding functions and Service Binding functions\r | |
3 | implementation for Mtftp6 Driver.\r | |
4 | \r | |
76389e18 | 5 | Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r |
a3bcde70 HT |
6 | \r |
7 | This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php.\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include "Mtftp6Impl.h"\r | |
18 | \r | |
19 | \r | |
20 | EFI_DRIVER_BINDING_PROTOCOL gMtftp6DriverBinding = {\r | |
21 | Mtftp6DriverBindingSupported,\r | |
22 | Mtftp6DriverBindingStart,\r | |
23 | Mtftp6DriverBindingStop,\r | |
24 | 0xa,\r | |
25 | NULL,\r | |
26 | NULL\r | |
27 | };\r | |
28 | \r | |
29 | EFI_SERVICE_BINDING_PROTOCOL gMtftp6ServiceBindingTemplate = {\r | |
30 | Mtftp6ServiceBindingCreateChild,\r | |
31 | Mtftp6ServiceBindingDestroyChild\r | |
32 | };\r | |
33 | \r | |
34 | \r | |
35 | /**\r | |
36 | Destory the MTFTP6 service. The MTFTP6 service may be partly initialized,\r | |
37 | or partly destroyed. If a resource is destroyed, it is marked as such in\r | |
38 | case the destroy failed and is called again later.\r | |
39 | \r | |
40 | @param[in] Service The MTFTP6 service to be destroyed.\r | |
41 | \r | |
42 | **/\r | |
43 | VOID\r | |
44 | Mtftp6DestroyService (\r | |
45 | IN MTFTP6_SERVICE *Service\r | |
46 | )\r | |
47 | {\r | |
48 | //\r | |
49 | // Make sure all children instances have been already destoryed.\r | |
50 | //\r | |
51 | ASSERT (Service->ChildrenNum == 0);\r | |
52 | \r | |
53 | if (Service->DummyUdpIo != NULL) {\r | |
54 | UdpIoFreeIo (Service->DummyUdpIo);\r | |
55 | }\r | |
56 | \r | |
57 | if (Service->Timer != NULL) {\r | |
58 | gBS->CloseEvent (Service->Timer);\r | |
59 | }\r | |
60 | \r | |
61 | FreePool (Service);\r | |
62 | }\r | |
63 | \r | |
64 | \r | |
65 | /**\r | |
66 | Create then initialize a MTFTP6 service binding instance.\r | |
67 | \r | |
68 | @param[in] Controller The controller to install the MTFTP6 service\r | |
69 | binding on.\r | |
70 | @param[in] Image The driver binding image of the MTFTP6 driver.\r | |
71 | @param[out] Service The variable to receive the created service\r | |
72 | binding instance.\r | |
73 | \r | |
74 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resources to create the instance\r | |
75 | @retval EFI_DEVICE_ERROR Failed to create a NULL UDP port to keep connection with UDP.\r | |
76 | @retval EFI_SUCCESS The service instance is created for the controller.\r | |
77 | \r | |
78 | **/\r | |
79 | EFI_STATUS\r | |
80 | Mtftp6CreateService (\r | |
81 | IN EFI_HANDLE Controller,\r | |
82 | IN EFI_HANDLE Image,\r | |
83 | OUT MTFTP6_SERVICE **Service\r | |
84 | )\r | |
85 | {\r | |
86 | MTFTP6_SERVICE *Mtftp6Srv;\r | |
87 | EFI_STATUS Status;\r | |
88 | \r | |
89 | ASSERT (Service != NULL);\r | |
90 | \r | |
91 | *Service = NULL;\r | |
92 | Mtftp6Srv = AllocateZeroPool (sizeof (MTFTP6_SERVICE));\r | |
93 | \r | |
94 | if (Mtftp6Srv == NULL) {\r | |
95 | return EFI_OUT_OF_RESOURCES;\r | |
96 | }\r | |
97 | \r | |
98 | Mtftp6Srv->Signature = MTFTP6_SERVICE_SIGNATURE;\r | |
99 | Mtftp6Srv->Controller = Controller;\r | |
100 | Mtftp6Srv->Image = Image;\r | |
101 | Mtftp6Srv->InDestory = FALSE;\r | |
102 | Mtftp6Srv->ChildrenNum = 0;\r | |
103 | \r | |
104 | CopyMem (\r | |
105 | &Mtftp6Srv->ServiceBinding,\r | |
106 | &gMtftp6ServiceBindingTemplate,\r | |
107 | sizeof (EFI_SERVICE_BINDING_PROTOCOL)\r | |
108 | );\r | |
109 | \r | |
110 | InitializeListHead (&Mtftp6Srv->Children);\r | |
111 | \r | |
112 | //\r | |
113 | // Create a internal timer for all instances.\r | |
114 | //\r | |
115 | Status = gBS->CreateEvent (\r | |
116 | EVT_NOTIFY_SIGNAL | EVT_TIMER,\r | |
117 | TPL_CALLBACK,\r | |
118 | Mtftp6OnTimerTick,\r | |
119 | Mtftp6Srv,\r | |
120 | &Mtftp6Srv->Timer\r | |
121 | );\r | |
122 | \r | |
123 | if (EFI_ERROR (Status)) {\r | |
124 | FreePool (Mtftp6Srv);\r | |
125 | return Status;\r | |
126 | }\r | |
127 | \r | |
128 | //\r | |
129 | // Create a dummy Udp6Io to build parent-child relationship between Udp6 driver\r | |
130 | // and Mtftp6 driver.\r | |
131 | //\r | |
132 | Mtftp6Srv->DummyUdpIo = UdpIoCreateIo (\r | |
133 | Controller,\r | |
134 | Image,\r | |
135 | Mtftp6ConfigDummyUdpIo,\r | |
136 | UDP_IO_UDP6_VERSION,\r | |
137 | NULL\r | |
138 | );\r | |
139 | \r | |
140 | if (Mtftp6Srv->DummyUdpIo == NULL) {\r | |
141 | gBS->CloseEvent (Mtftp6Srv->Timer);\r | |
142 | FreePool (Mtftp6Srv);\r | |
143 | return EFI_DEVICE_ERROR;\r | |
144 | }\r | |
145 | \r | |
146 | *Service = Mtftp6Srv;\r | |
147 | return EFI_SUCCESS;\r | |
148 | }\r | |
149 | \r | |
150 | \r | |
151 | /**\r | |
152 | Destroy the MTFTP6 instance and recycle the resources.\r | |
153 | \r | |
154 | @param[in] Instance The pointer to the MTFTP6 instance.\r | |
155 | \r | |
156 | **/\r | |
157 | VOID\r | |
158 | Mtftp6DestroyInstance (\r | |
159 | IN MTFTP6_INSTANCE *Instance\r | |
160 | )\r | |
161 | {\r | |
162 | LIST_ENTRY *Entry;\r | |
163 | LIST_ENTRY *Next;\r | |
164 | MTFTP6_BLOCK_RANGE *Block;\r | |
165 | \r | |
166 | if (Instance->Config != NULL) {\r | |
167 | FreePool (Instance->Config);\r | |
168 | }\r | |
169 | \r | |
170 | if (Instance->Token != NULL && Instance->Token->Event != NULL) {\r | |
171 | gBS->SignalEvent (Instance->Token->Event);\r | |
172 | }\r | |
173 | \r | |
174 | if (Instance->LastPacket != NULL) {\r | |
175 | NetbufFree (Instance->LastPacket);\r | |
176 | }\r | |
177 | \r | |
178 | if (Instance->UdpIo!= NULL) {\r | |
179 | UdpIoFreeIo (Instance->UdpIo);\r | |
180 | }\r | |
181 | \r | |
182 | if (Instance->McastUdpIo != NULL) {\r | |
183 | UdpIoFreeIo (Instance->McastUdpIo);\r | |
184 | }\r | |
185 | \r | |
186 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Instance->BlkList) {\r | |
187 | Block = NET_LIST_USER_STRUCT (Entry, MTFTP6_BLOCK_RANGE, Link);\r | |
188 | RemoveEntryList (Entry);\r | |
189 | FreePool (Block);\r | |
190 | }\r | |
191 | \r | |
192 | FreePool (Instance);\r | |
193 | }\r | |
194 | \r | |
195 | \r | |
196 | /**\r | |
197 | Create the MTFTP6 instance and initialize it.\r | |
198 | \r | |
199 | @param[in] Service The pointer to the MTFTP6 service.\r | |
200 | @param[out] Instance The pointer to the MTFTP6 instance.\r | |
201 | \r | |
202 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resources.\r | |
203 | @retval EFI_SUCCESS The MTFTP6 instance is created.\r | |
204 | \r | |
205 | **/\r | |
206 | EFI_STATUS\r | |
207 | Mtftp6CreateInstance (\r | |
208 | IN MTFTP6_SERVICE *Service,\r | |
209 | OUT MTFTP6_INSTANCE **Instance\r | |
210 | )\r | |
211 | {\r | |
212 | MTFTP6_INSTANCE *Mtftp6Ins;\r | |
213 | \r | |
214 | *Instance = NULL;\r | |
215 | Mtftp6Ins = AllocateZeroPool (sizeof (MTFTP6_INSTANCE));\r | |
216 | \r | |
217 | if (Mtftp6Ins == NULL) {\r | |
218 | return EFI_OUT_OF_RESOURCES;\r | |
219 | }\r | |
220 | \r | |
221 | Mtftp6Ins->Signature = MTFTP6_INSTANCE_SIGNATURE;\r | |
222 | Mtftp6Ins->InDestory = FALSE;\r | |
223 | Mtftp6Ins->Service = Service;\r | |
224 | \r | |
225 | CopyMem (\r | |
226 | &Mtftp6Ins->Mtftp6,\r | |
227 | &gMtftp6ProtocolTemplate,\r | |
228 | sizeof (EFI_MTFTP6_PROTOCOL)\r | |
229 | );\r | |
230 | \r | |
231 | InitializeListHead (&Mtftp6Ins->Link);\r | |
232 | InitializeListHead (&Mtftp6Ins->BlkList);\r | |
233 | \r | |
234 | *Instance = Mtftp6Ins;\r | |
235 | \r | |
236 | return EFI_SUCCESS;\r | |
237 | }\r | |
238 | \r | |
239 | \r | |
240 | /**\r | |
241 | This is the declaration of an EFI image entry point. This entry point is\r | |
242 | the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers, including\r | |
243 | both device drivers and bus drivers.\r | |
244 | \r | |
245 | Entry point of the MTFTP6 driver to install various protocols.\r | |
246 | \r | |
247 | @param[in] ImageHandle The firmware allocated handle for the UEFI image.\r | |
248 | @param[in] SystemTable The pointer to the EFI System Table.\r | |
249 | \r | |
250 | @retval EFI_SUCCESS The operation completed successfully.\r | |
251 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
252 | \r | |
253 | **/\r | |
254 | EFI_STATUS\r | |
255 | EFIAPI\r | |
256 | Mtftp6DriverEntryPoint (\r | |
257 | IN EFI_HANDLE ImageHandle,\r | |
258 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
259 | )\r | |
260 | {\r | |
261 | return EfiLibInstallDriverBindingComponentName2 (\r | |
262 | ImageHandle,\r | |
263 | SystemTable,\r | |
264 | &gMtftp6DriverBinding,\r | |
265 | ImageHandle,\r | |
266 | &gMtftp6ComponentName,\r | |
267 | &gMtftp6ComponentName2\r | |
268 | );\r | |
269 | }\r | |
270 | \r | |
271 | \r | |
272 | /**\r | |
76389e18 | 273 | Test to see if this driver supports Controller. This service\r |
a3bcde70 HT |
274 | is called by the EFI boot service ConnectController(). In\r |
275 | order to make drivers as small as possible, there are calling\r | |
276 | restrictions for this service. ConnectController() must\r | |
277 | follow these calling restrictions. If any other agent wishes to call\r | |
278 | Supported(), it must also follow these calling restrictions.\r | |
279 | \r | |
280 | @param[in] This Protocol instance pointer.\r | |
76389e18 | 281 | @param[in] Controller Handle of device to test\r |
a3bcde70 HT |
282 | @param[in] RemainingDevicePath Optional parameter use to pick a specific child.\r |
283 | device to start.\r | |
284 | \r | |
285 | @retval EFI_SUCCESS This driver supports this device.\r | |
286 | @retval Others This driver does not support this device.\r | |
287 | \r | |
288 | **/\r | |
289 | EFI_STATUS\r | |
290 | EFIAPI\r | |
291 | Mtftp6DriverBindingSupported (\r | |
292 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
293 | IN EFI_HANDLE Controller,\r | |
294 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
295 | )\r | |
296 | {\r | |
297 | return gBS->OpenProtocol (\r | |
298 | Controller,\r | |
299 | &gEfiUdp6ServiceBindingProtocolGuid,\r | |
300 | NULL,\r | |
301 | This->DriverBindingHandle,\r | |
302 | Controller,\r | |
303 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
304 | );\r | |
305 | }\r | |
306 | \r | |
307 | \r | |
308 | /**\r | |
76389e18 | 309 | Start this driver on Controller. This service is called by the\r |
a3bcde70 HT |
310 | EFI boot service ConnectController(). In order to make\r |
311 | drivers as small as possible, there are calling restrictions for\r | |
312 | this service. ConnectController() must follow these\r | |
313 | calling restrictions. If any other agent wishes to call Start() it\r | |
314 | must also follow these calling restrictions.\r | |
315 | \r | |
316 | @param[in] This Protocol instance pointer.\r | |
76389e18 | 317 | @param[in] Controller Handle of device to bind driver to.\r |
a3bcde70 HT |
318 | @param[in] RemainingDevicePath Optional parameter use to pick a specific child\r |
319 | device to start.\r | |
320 | \r | |
76389e18 | 321 | @retval EFI_SUCCESS This driver is added to Controller.\r |
322 | @retval EFI_ALREADY_STARTED This driver is already running on Controller.\r | |
a3bcde70 HT |
323 | @retval Others This driver does not support this device.\r |
324 | \r | |
325 | **/\r | |
326 | EFI_STATUS\r | |
327 | EFIAPI\r | |
328 | Mtftp6DriverBindingStart (\r | |
329 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
330 | IN EFI_HANDLE Controller,\r | |
331 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
332 | )\r | |
333 | {\r | |
334 | MTFTP6_SERVICE *Service;\r | |
335 | EFI_STATUS Status;\r | |
336 | \r | |
337 | //\r | |
338 | // Directly return if driver is already running on this Nic handle.\r | |
339 | //\r | |
340 | Status = gBS->OpenProtocol (\r | |
341 | Controller,\r | |
342 | &gEfiMtftp6ServiceBindingProtocolGuid,\r | |
343 | NULL,\r | |
344 | This->DriverBindingHandle,\r | |
345 | Controller,\r | |
346 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
347 | );\r | |
348 | \r | |
349 | if (!EFI_ERROR (Status)) {\r | |
350 | return EFI_ALREADY_STARTED;\r | |
351 | }\r | |
352 | \r | |
353 | //\r | |
354 | // Create Mtftp6 service for this Nic handle\r | |
355 | //\r | |
356 | Status = Mtftp6CreateService (\r | |
357 | Controller,\r | |
358 | This->DriverBindingHandle,\r | |
359 | &Service\r | |
360 | );\r | |
361 | \r | |
362 | if (EFI_ERROR (Status)) {\r | |
363 | return Status;\r | |
364 | }\r | |
365 | \r | |
366 | ASSERT (Service != NULL);\r | |
367 | \r | |
368 | //\r | |
369 | // Start the internal timer to track the packet retransmission.\r | |
370 | //\r | |
371 | Status = gBS->SetTimer (\r | |
372 | Service->Timer,\r | |
373 | TimerPeriodic,\r | |
374 | TICKS_PER_SECOND\r | |
375 | );\r | |
376 | \r | |
377 | if (EFI_ERROR (Status)) {\r | |
378 | goto ON_ERROR;\r | |
379 | }\r | |
380 | \r | |
381 | //\r | |
382 | // Install the Mtftp6 service on the Nic handle.\r | |
383 | //\r | |
384 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
385 | &Controller,\r | |
386 | &gEfiMtftp6ServiceBindingProtocolGuid,\r | |
387 | &Service->ServiceBinding,\r | |
388 | NULL\r | |
389 | );\r | |
390 | \r | |
391 | if (EFI_ERROR (Status)) {\r | |
392 | goto ON_ERROR;\r | |
393 | }\r | |
394 | \r | |
395 | return EFI_SUCCESS;\r | |
396 | \r | |
397 | ON_ERROR:\r | |
398 | \r | |
399 | Mtftp6DestroyService (Service);\r | |
400 | return Status;\r | |
401 | }\r | |
402 | \r | |
403 | \r | |
404 | /**\r | |
76389e18 | 405 | Stop this driver on Controller. This service is called by the\r |
a3bcde70 | 406 | EFI boot service DisconnectController(). In order to\r |
76389e18 | 407 | make drivers as small as possible, there are calling\r |
a3bcde70 HT |
408 | restrictions for this service. DisconnectController()\r |
409 | must follow these calling restrictions. If any other agent wishes\r | |
76389e18 | 410 | to call Stop(), it must also follow these calling restrictions.\r |
a3bcde70 HT |
411 | \r |
412 | @param[in] This Protocol instance pointer.\r | |
76389e18 | 413 | @param[in] Controller Handle of device to stop driver on\r |
a3bcde70 HT |
414 | @param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r |
415 | children is zero, stop the entire bus driver.\r | |
416 | @param[in] ChildHandleBuffer List of Child Handles to Stop.\r | |
417 | \r | |
76389e18 | 418 | @retval EFI_SUCCESS This driver is removed Controller.\r |
a3bcde70 HT |
419 | @retval EFI_DEVICE_ERROR An unexpected error.\r |
420 | @retval Others This driver was not removed from this device.\r | |
421 | \r | |
422 | **/\r | |
423 | EFI_STATUS\r | |
424 | EFIAPI\r | |
425 | Mtftp6DriverBindingStop (\r | |
426 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
427 | IN EFI_HANDLE Controller,\r | |
428 | IN UINTN NumberOfChildren,\r | |
429 | IN EFI_HANDLE *ChildHandleBuffer\r | |
430 | )\r | |
431 | {\r | |
432 | EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r | |
433 | MTFTP6_SERVICE *Service;\r | |
434 | MTFTP6_INSTANCE *Instance;\r | |
435 | EFI_HANDLE NicHandle;\r | |
436 | EFI_STATUS Status;\r | |
437 | EFI_TPL OldTpl;\r | |
438 | \r | |
439 | //\r | |
440 | // Locate the Nic handle to retrieve the Mtftp6 private data.\r | |
441 | //\r | |
442 | NicHandle = NetLibGetNicHandle (Controller, &gEfiUdp6ProtocolGuid);\r | |
443 | \r | |
444 | if (NicHandle == NULL) {\r | |
445 | return EFI_DEVICE_ERROR;\r | |
446 | }\r | |
447 | \r | |
448 | Status = gBS->OpenProtocol (\r | |
449 | NicHandle,\r | |
450 | &gEfiMtftp6ServiceBindingProtocolGuid,\r | |
451 | (VOID **) &ServiceBinding,\r | |
452 | This->DriverBindingHandle,\r | |
453 | NicHandle,\r | |
454 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
455 | );\r | |
456 | \r | |
457 | if (EFI_ERROR (Status)) {\r | |
458 | return EFI_DEVICE_ERROR;\r | |
459 | }\r | |
460 | \r | |
461 | Service = MTFTP6_SERVICE_FROM_THIS (ServiceBinding);\r | |
462 | \r | |
463 | if (Service->InDestory) {\r | |
464 | return EFI_SUCCESS;\r | |
465 | }\r | |
466 | \r | |
467 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
468 | \r | |
469 | if (NumberOfChildren == 0) {\r | |
470 | //\r | |
471 | // Destory the Mtftp6 service if there is no Mtftp6 child instance left.\r | |
472 | //\r | |
473 | Service->InDestory = TRUE;\r | |
474 | \r | |
475 | gBS->UninstallProtocolInterface (\r | |
476 | NicHandle,\r | |
477 | &gEfiMtftp6ServiceBindingProtocolGuid,\r | |
478 | ServiceBinding\r | |
479 | );\r | |
480 | \r | |
481 | Mtftp6DestroyService (Service);\r | |
482 | \r | |
483 | } else {\r | |
484 | //\r | |
485 | // Destory the Mtftp6 child instance one by one.\r | |
486 | //\r | |
487 | while (!IsListEmpty (&Service->Children)) {\r | |
488 | Instance = NET_LIST_HEAD (&Service->Children, MTFTP6_INSTANCE, Link);\r | |
489 | Mtftp6ServiceBindingDestroyChild (ServiceBinding, Instance->Handle);\r | |
490 | }\r | |
491 | \r | |
492 | if (Service->ChildrenNum != 0) {\r | |
493 | Status = EFI_DEVICE_ERROR;\r | |
494 | }\r | |
495 | }\r | |
496 | \r | |
497 | gBS->RestoreTPL (OldTpl);\r | |
498 | return Status;\r | |
499 | }\r | |
500 | \r | |
501 | \r | |
502 | /**\r | |
503 | Creates a child handle and installs a protocol.\r | |
504 | \r | |
505 | The CreateChild() function installs a protocol on ChildHandle.\r | |
506 | If ChildHandle is a pointer to NULL, then a new handle is created and returned in ChildHandle.\r | |
507 | If ChildHandle is not a pointer to NULL, then the protocol installs on the existing ChildHandle.\r | |
508 | \r | |
509 | @param[in] This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.\r | |
510 | @param[in, out] ChildHandle Pointer to the handle of the child to create. If it is NULL,\r | |
511 | then a new handle is created. If it is a pointer to an existing\r | |
512 | UEFI handle, then the protocol is added to the existing UEFI handle.\r | |
513 | \r | |
514 | @retval EFI_SUCCES The protocol was added to ChildHandle.\r | |
515 | @retval EFI_INVALID_PARAMETER ChildHandle is NULL.\r | |
516 | @retval Others The child handle was not created.\r | |
517 | \r | |
518 | **/\r | |
519 | EFI_STATUS\r | |
520 | EFIAPI\r | |
521 | Mtftp6ServiceBindingCreateChild (\r | |
522 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
523 | IN OUT EFI_HANDLE *ChildHandle\r | |
524 | )\r | |
525 | {\r | |
526 | MTFTP6_SERVICE *Service;\r | |
527 | MTFTP6_INSTANCE *Instance;\r | |
528 | EFI_STATUS Status;\r | |
529 | EFI_TPL OldTpl;\r | |
530 | VOID *Udp6;\r | |
531 | \r | |
532 | if (This == NULL || ChildHandle == NULL) {\r | |
533 | return EFI_INVALID_PARAMETER;\r | |
534 | }\r | |
535 | \r | |
536 | Service = MTFTP6_SERVICE_FROM_THIS (This);\r | |
537 | \r | |
538 | Status = Mtftp6CreateInstance (Service, &Instance);\r | |
539 | \r | |
540 | if (EFI_ERROR (Status)) {\r | |
541 | return Status;\r | |
542 | }\r | |
543 | \r | |
544 | ASSERT (Instance != NULL);\r | |
545 | \r | |
546 | //\r | |
547 | // Install the Mtftp6 protocol on the new child handle.\r | |
548 | //\r | |
549 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
550 | ChildHandle,\r | |
551 | &gEfiMtftp6ProtocolGuid,\r | |
552 | &Instance->Mtftp6,\r | |
553 | NULL\r | |
554 | );\r | |
555 | \r | |
556 | if (EFI_ERROR (Status)) {\r | |
557 | goto ON_ERROR;\r | |
558 | }\r | |
559 | \r | |
560 | Instance->Handle = *ChildHandle;\r | |
561 | \r | |
562 | //\r | |
563 | // Open the Udp6 protocol by child.\r | |
564 | //\r | |
565 | Status = gBS->OpenProtocol (\r | |
566 | Service->DummyUdpIo->UdpHandle,\r | |
567 | &gEfiUdp6ProtocolGuid,\r | |
568 | (VOID **) &Udp6,\r | |
569 | gMtftp6DriverBinding.DriverBindingHandle,\r | |
570 | Instance->Handle,\r | |
571 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
572 | );\r | |
573 | \r | |
574 | if (EFI_ERROR (Status)) {\r | |
575 | gBS->UninstallMultipleProtocolInterfaces (\r | |
576 | Instance->Handle,\r | |
577 | &gEfiMtftp6ProtocolGuid,\r | |
578 | &Instance->Mtftp6,\r | |
579 | NULL\r | |
580 | );\r | |
581 | \r | |
582 | goto ON_ERROR;\r | |
583 | }\r | |
584 | \r | |
585 | //\r | |
586 | // Add the new Mtftp6 instance into the children list of Mtftp6 service.\r | |
587 | //\r | |
588 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
589 | \r | |
590 | InsertTailList (&Service->Children, &Instance->Link);\r | |
591 | Service->ChildrenNum++;\r | |
592 | \r | |
593 | gBS->RestoreTPL (OldTpl);\r | |
594 | return EFI_SUCCESS;\r | |
595 | \r | |
596 | ON_ERROR:\r | |
597 | \r | |
598 | Mtftp6DestroyInstance (Instance);\r | |
599 | return Status;\r | |
600 | }\r | |
601 | \r | |
602 | \r | |
603 | /**\r | |
604 | Destroys a child handle with a protocol installed on it.\r | |
605 | \r | |
606 | The DestroyChild() function does the opposite of CreateChild(). It removes a protocol\r | |
607 | that was installed by CreateChild() from ChildHandle. If the removed protocol is the\r | |
608 | last protocol on ChildHandle, then ChildHandle is destroyed.\r | |
609 | \r | |
610 | @param[in] This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.\r | |
611 | @param[in] ChildHandle Handle of the child to destroy.\r | |
612 | \r | |
613 | @retval EFI_SUCCES The protocol was removed from ChildHandle.\r | |
614 | @retval EFI_UNSUPPORTED ChildHandle does not support the protocol that is being removed.\r | |
15ee13fc | 615 | @retval EFI_INVALID_PARAMETER Child handle is NULL.\r |
a3bcde70 HT |
616 | @retval Others The child handle was not destroyed\r |
617 | \r | |
618 | **/\r | |
619 | EFI_STATUS\r | |
620 | EFIAPI\r | |
621 | Mtftp6ServiceBindingDestroyChild (\r | |
622 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
623 | IN EFI_HANDLE ChildHandle\r | |
624 | )\r | |
625 | {\r | |
626 | MTFTP6_SERVICE *Service;\r | |
627 | MTFTP6_INSTANCE *Instance;\r | |
628 | EFI_MTFTP6_PROTOCOL *Mtftp6;\r | |
629 | EFI_STATUS Status;\r | |
630 | EFI_TPL OldTpl;\r | |
631 | \r | |
632 | if (This == NULL || ChildHandle == NULL) {\r | |
633 | return EFI_INVALID_PARAMETER;\r | |
634 | }\r | |
635 | \r | |
636 | //\r | |
637 | // Locate the Nic handle to retrieve the Mtftp6 private data.\r | |
638 | //\r | |
639 | Status = gBS->OpenProtocol (\r | |
640 | ChildHandle,\r | |
641 | &gEfiMtftp6ProtocolGuid,\r | |
642 | (VOID **) &Mtftp6,\r | |
643 | gMtftp6DriverBinding.DriverBindingHandle,\r | |
644 | ChildHandle,\r | |
645 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
646 | );\r | |
647 | \r | |
648 | if (EFI_ERROR (Status)) {\r | |
649 | return EFI_UNSUPPORTED;\r | |
650 | }\r | |
651 | \r | |
652 | Instance = MTFTP6_INSTANCE_FROM_THIS (Mtftp6);\r | |
653 | Service = MTFTP6_SERVICE_FROM_THIS (This);\r | |
654 | \r | |
655 | if (Instance->Service != Service) {\r | |
656 | return EFI_INVALID_PARAMETER;\r | |
657 | }\r | |
658 | \r | |
659 | //\r | |
660 | // Check whether the instance already in destory state.\r | |
661 | //\r | |
662 | if (Instance->InDestory) {\r | |
663 | return EFI_SUCCESS;\r | |
664 | }\r | |
665 | \r | |
666 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
667 | \r | |
668 | Instance->InDestory = TRUE;\r | |
669 | \r | |
670 | gBS->CloseProtocol (\r | |
671 | Service->DummyUdpIo->UdpHandle,\r | |
672 | &gEfiUdp6ProtocolGuid,\r | |
673 | gMtftp6DriverBinding.DriverBindingHandle,\r | |
674 | ChildHandle\r | |
675 | );\r | |
676 | \r | |
677 | //\r | |
678 | // Uninstall the MTFTP6 protocol first to enable a top down destruction.\r | |
679 | //\r | |
680 | Status = gBS->UninstallProtocolInterface (\r | |
681 | ChildHandle,\r | |
682 | &gEfiMtftp6ProtocolGuid,\r | |
683 | Mtftp6\r | |
684 | );\r | |
685 | \r | |
686 | if (EFI_ERROR (Status)) {\r | |
687 | Instance->InDestory = FALSE;\r | |
688 | gBS->RestoreTPL (OldTpl);\r | |
689 | return Status;\r | |
690 | }\r | |
691 | \r | |
692 | //\r | |
693 | // Remove the Mtftp6 instance from the children list of Mtftp6 service.\r | |
694 | //\r | |
695 | RemoveEntryList (&Instance->Link);\r | |
696 | Service->ChildrenNum --;\r | |
697 | \r | |
698 | Mtftp6DestroyInstance (Instance);\r | |
699 | \r | |
700 | gBS->RestoreTPL (OldTpl);\r | |
701 | \r | |
702 | return EFI_SUCCESS;\r | |
703 | }\r |