]>
Commit | Line | Data |
---|---|---|
e65e8802 AP |
1 | /** @file\r |
2 | This driver produces XenBus Protocol instances for each Xen PV devices.\r | |
3 | \r | |
493dde94 | 4 | This XenBus bus driver will first initialize different services in order to\r |
e65e8802 AP |
5 | enumerate the ParaVirtualized devices available.\r |
6 | \r | |
7 | Those services are:\r | |
8 | - HyperCall\r | |
9 | - Event Channel\r | |
10 | - Grant Table\r | |
11 | - XenStore\r | |
12 | - XenBus\r | |
13 | \r | |
14 | Copyright (C) 2014, Citrix Ltd.\r | |
15 | \r | |
b26f0cf9 | 16 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
e65e8802 AP |
17 | \r |
18 | **/\r | |
19 | \r | |
e65e8802 | 20 | #include <Library/DebugLib.h>\r |
cd8ff8fd | 21 | #include <Library/XenHypercallLib.h>\r |
e65e8802 AP |
22 | \r |
23 | #include "XenBusDxe.h"\r | |
24 | \r | |
0fd14246 | 25 | #include "GrantTable.h"\r |
a9090a94 | 26 | #include "XenStore.h"\r |
86d968e0 | 27 | #include "XenBus.h"\r |
abcbbb14 | 28 | \r |
bbc3758a AB |
29 | #include <IndustryStandard/Xen/hvm/params.h>\r |
30 | #include <IndustryStandard/Xen/memory.h>\r | |
e65e8802 AP |
31 | \r |
32 | ///\r | |
33 | /// Driver Binding Protocol instance\r | |
34 | ///\r | |
35 | EFI_DRIVER_BINDING_PROTOCOL gXenBusDxeDriverBinding = {\r | |
36 | XenBusDxeDriverBindingSupported,\r | |
37 | XenBusDxeDriverBindingStart,\r | |
38 | XenBusDxeDriverBindingStop,\r | |
39 | XENBUS_DXE_VERSION,\r | |
40 | NULL,\r | |
41 | NULL\r | |
42 | };\r | |
43 | \r | |
44 | \r | |
a154f420 AP |
45 | STATIC EFI_LOCK mMyDeviceLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_CALLBACK);\r |
46 | STATIC XENBUS_DEVICE *mMyDevice = NULL;\r | |
47 | \r | |
bbc3758a AB |
48 | /**\r |
49 | Map the shared_info_t page into memory.\r | |
50 | \r | |
51 | @param Dev A XENBUS_DEVICE instance.\r | |
52 | \r | |
53 | @retval EFI_SUCCESS Dev->SharedInfo whill contain a pointer to\r | |
54 | the shared info page\r | |
55 | @retval EFI_LOAD_ERROR The shared info page could not be mapped. The\r | |
56 | hypercall returned an error.\r | |
57 | **/\r | |
58 | STATIC\r | |
59 | EFI_STATUS\r | |
60 | XenGetSharedInfoPage (\r | |
61 | IN OUT XENBUS_DEVICE *Dev\r | |
62 | )\r | |
63 | {\r | |
64 | xen_add_to_physmap_t Parameter;\r | |
65 | \r | |
66 | ASSERT (Dev->SharedInfo == NULL);\r | |
67 | \r | |
68 | Parameter.domid = DOMID_SELF;\r | |
69 | Parameter.space = XENMAPSPACE_shared_info;\r | |
70 | Parameter.idx = 0;\r | |
71 | \r | |
72 | //\r | |
73 | // using reserved page because the page is not released when Linux is\r | |
74 | // starting because of the add_to_physmap. QEMU might try to access the\r | |
75 | // page, and fail because it have no right to do so (segv).\r | |
76 | //\r | |
77 | Dev->SharedInfo = AllocateReservedPages (1);\r | |
78 | Parameter.gpfn = (UINTN) Dev->SharedInfo >> EFI_PAGE_SHIFT;\r | |
79 | if (XenHypercallMemoryOp (XENMEM_add_to_physmap, &Parameter) != 0) {\r | |
80 | FreePages (Dev->SharedInfo, 1);\r | |
81 | Dev->SharedInfo = NULL;\r | |
82 | return EFI_LOAD_ERROR;\r | |
83 | }\r | |
84 | \r | |
85 | return EFI_SUCCESS;\r | |
86 | }\r | |
87 | \r | |
e65e8802 AP |
88 | /**\r |
89 | Unloads an image.\r | |
90 | \r | |
91 | @param ImageHandle Handle that identifies the image to be unloaded.\r | |
92 | \r | |
93 | @retval EFI_SUCCESS The image has been unloaded.\r | |
94 | @retval EFI_INVALID_PARAMETER ImageHandle is not a valid image handle.\r | |
95 | \r | |
96 | **/\r | |
97 | EFI_STATUS\r | |
98 | EFIAPI\r | |
99 | XenBusDxeUnload (\r | |
100 | IN EFI_HANDLE ImageHandle\r | |
101 | )\r | |
102 | {\r | |
103 | EFI_STATUS Status;\r | |
104 | \r | |
105 | EFI_HANDLE *HandleBuffer;\r | |
106 | UINTN HandleCount;\r | |
107 | UINTN Index;\r | |
108 | \r | |
109 | //\r | |
110 | // Retrieve array of all handles in the handle database\r | |
111 | //\r | |
112 | Status = gBS->LocateHandleBuffer (\r | |
113 | AllHandles,\r | |
114 | NULL,\r | |
115 | NULL,\r | |
116 | &HandleCount,\r | |
117 | &HandleBuffer\r | |
118 | );\r | |
119 | if (EFI_ERROR (Status)) {\r | |
120 | return Status;\r | |
121 | }\r | |
122 | \r | |
123 | //\r | |
124 | // Disconnect the current driver from handles in the handle database\r | |
125 | //\r | |
126 | for (Index = 0; Index < HandleCount; Index++) {\r | |
127 | gBS->DisconnectController (HandleBuffer[Index], gImageHandle, NULL);\r | |
128 | }\r | |
129 | \r | |
130 | //\r | |
131 | // Free the array of handles\r | |
132 | //\r | |
133 | FreePool (HandleBuffer);\r | |
134 | \r | |
135 | \r | |
136 | //\r | |
137 | // Uninstall protocols installed in the driver entry point\r | |
138 | //\r | |
139 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
140 | ImageHandle,\r | |
141 | &gEfiDriverBindingProtocolGuid, &gXenBusDxeDriverBinding,\r | |
142 | &gEfiComponentNameProtocolGuid, &gXenBusDxeComponentName,\r | |
143 | &gEfiComponentName2ProtocolGuid, &gXenBusDxeComponentName2,\r | |
144 | NULL\r | |
145 | );\r | |
146 | if (EFI_ERROR (Status)) {\r | |
147 | return Status;\r | |
148 | }\r | |
149 | \r | |
150 | return EFI_SUCCESS;\r | |
151 | }\r | |
152 | \r | |
153 | /**\r | |
154 | This is the declaration of an EFI image entry point. This entry point is\r | |
155 | the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including\r | |
156 | both device drivers and bus drivers.\r | |
157 | \r | |
158 | @param ImageHandle The firmware allocated handle for the UEFI image.\r | |
159 | @param SystemTable A pointer to the EFI System Table.\r | |
160 | \r | |
161 | @retval EFI_SUCCESS The operation completed successfully.\r | |
48b3ff04 | 162 | @retval EFI_ABORTED Xen hypercalls are not available.\r |
e65e8802 AP |
163 | @retval Others An unexpected error occurred.\r |
164 | **/\r | |
165 | EFI_STATUS\r | |
166 | EFIAPI\r | |
167 | XenBusDxeDriverEntryPoint (\r | |
168 | IN EFI_HANDLE ImageHandle,\r | |
169 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
170 | )\r | |
171 | {\r | |
172 | EFI_STATUS Status;\r | |
173 | \r | |
48b3ff04 LE |
174 | if (! XenHypercallIsAvailable ()) {\r |
175 | return EFI_ABORTED;\r | |
176 | }\r | |
177 | \r | |
e65e8802 AP |
178 | //\r |
179 | // Install UEFI Driver Model protocol(s).\r | |
180 | //\r | |
181 | Status = EfiLibInstallDriverBindingComponentName2 (\r | |
182 | ImageHandle,\r | |
183 | SystemTable,\r | |
184 | &gXenBusDxeDriverBinding,\r | |
185 | ImageHandle,\r | |
186 | &gXenBusDxeComponentName,\r | |
187 | &gXenBusDxeComponentName2\r | |
188 | );\r | |
189 | ASSERT_EFI_ERROR (Status);\r | |
190 | \r | |
191 | \r | |
192 | return Status;\r | |
193 | }\r | |
194 | \r | |
195 | \r | |
196 | /**\r | |
197 | Tests to see if this driver supports a given controller. If a child device is provided,\r | |
198 | it further tests to see if this driver supports creating a handle for the specified child device.\r | |
199 | \r | |
200 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
201 | @param[in] ControllerHandle The handle of the controller to test. This handle\r | |
202 | must support a protocol interface that supplies\r | |
203 | an I/O abstraction to the driver.\r | |
204 | @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This\r | |
205 | parameter is ignored by device drivers, and is optional for bus\r | |
206 | drivers. For bus drivers, if this parameter is not NULL, then\r | |
207 | the bus driver must determine if the bus controller specified\r | |
208 | by ControllerHandle and the child controller specified\r | |
209 | by RemainingDevicePath are both supported by this\r | |
210 | bus driver.\r | |
211 | \r | |
212 | @retval EFI_SUCCESS The device specified by ControllerHandle and\r | |
213 | RemainingDevicePath is supported by the driver specified by This.\r | |
214 | @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and\r | |
215 | RemainingDevicePath is already being managed by the driver\r | |
216 | specified by This.\r | |
217 | @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and\r | |
218 | RemainingDevicePath is already being managed by a different\r | |
219 | driver or an application that requires exclusive access.\r | |
220 | Currently not implemented.\r | |
221 | @retval EFI_UNSUPPORTED The device specified by ControllerHandle and\r | |
222 | RemainingDevicePath is not supported by the driver specified by This.\r | |
223 | **/\r | |
224 | EFI_STATUS\r | |
225 | EFIAPI\r | |
226 | XenBusDxeDriverBindingSupported (\r | |
227 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
228 | IN EFI_HANDLE ControllerHandle,\r | |
229 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
230 | )\r | |
231 | {\r | |
232 | EFI_STATUS Status;\r | |
d9fdfd85 | 233 | XENIO_PROTOCOL *XenIo;\r |
e65e8802 AP |
234 | \r |
235 | Status = gBS->OpenProtocol (\r | |
236 | ControllerHandle,\r | |
d9fdfd85 AB |
237 | &gXenIoProtocolGuid,\r |
238 | (VOID **)&XenIo,\r | |
e65e8802 AP |
239 | This->DriverBindingHandle,\r |
240 | ControllerHandle,\r | |
241 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
242 | );\r | |
d9fdfd85 | 243 | \r |
e65e8802 AP |
244 | if (EFI_ERROR (Status)) {\r |
245 | return Status;\r | |
246 | }\r | |
247 | \r | |
d9fdfd85 | 248 | gBS->CloseProtocol (ControllerHandle, &gXenIoProtocolGuid,\r |
e65e8802 AP |
249 | This->DriverBindingHandle, ControllerHandle);\r |
250 | \r | |
251 | return Status;\r | |
252 | }\r | |
253 | \r | |
a154f420 AP |
254 | VOID\r |
255 | EFIAPI\r | |
256 | NotifyExitBoot (\r | |
257 | IN EFI_EVENT Event,\r | |
258 | IN VOID *Context\r | |
259 | )\r | |
260 | {\r | |
261 | XENBUS_DEVICE *Dev = Context;\r | |
262 | \r | |
263 | gBS->DisconnectController(Dev->ControllerHandle,\r | |
264 | Dev->This->DriverBindingHandle, NULL);\r | |
265 | }\r | |
266 | \r | |
e65e8802 AP |
267 | /**\r |
268 | Starts a bus controller.\r | |
269 | \r | |
270 | The Start() function is designed to be invoked from the EFI boot service ConnectController().\r | |
271 | As a result, much of the error checking on the parameters to Start() has been moved into this\r | |
272 | common boot service. It is legal to call Start() from other locations,\r | |
273 | but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r | |
274 | 1. ControllerHandle must be a valid EFI_HANDLE.\r | |
275 | 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r | |
276 | EFI_DEVICE_PATH_PROTOCOL.\r | |
277 | 3. Prior to calling Start(), the Supported() function for the driver specified by This must\r | |
278 | have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.\r | |
279 | \r | |
280 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
281 | @param[in] ControllerHandle The handle of the controller to start. This handle\r | |
282 | must support a protocol interface that supplies\r | |
283 | an I/O abstraction to the driver.\r | |
284 | @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This\r | |
285 | parameter is ignored by device drivers, and is optional for bus\r | |
286 | drivers. For a bus driver, if this parameter is NULL, then handles\r | |
287 | for all the children of Controller are created by this driver.\r | |
288 | If this parameter is not NULL and the first Device Path Node is\r | |
289 | not the End of Device Path Node, then only the handle for the\r | |
290 | child device specified by the first Device Path Node of\r | |
291 | RemainingDevicePath is created by this driver.\r | |
292 | If the first Device Path Node of RemainingDevicePath is\r | |
293 | the End of Device Path Node, no child handle is created by this\r | |
294 | driver.\r | |
295 | \r | |
296 | @retval EFI_SUCCESS The device was started.\r | |
297 | @retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.\r | |
298 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
abcbbb14 | 299 | @retval EFI_UNSUPPORTED Something is missing on the system that\r |
493dde94 AC |
300 | prevent to start the device.\r |
301 | @retval Others The driver failed to start the device.\r | |
e65e8802 AP |
302 | \r |
303 | **/\r | |
304 | EFI_STATUS\r | |
305 | EFIAPI\r | |
306 | XenBusDxeDriverBindingStart (\r | |
307 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
308 | IN EFI_HANDLE ControllerHandle,\r | |
309 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
310 | )\r | |
311 | {\r | |
a154f420 AP |
312 | EFI_STATUS Status;\r |
313 | XENBUS_DEVICE *Dev;\r | |
d9fdfd85 | 314 | XENIO_PROTOCOL *XenIo;\r |
86d968e0 | 315 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r |
956622c4 AP |
316 | \r |
317 | Status = gBS->OpenProtocol (\r | |
318 | ControllerHandle,\r | |
d9fdfd85 AB |
319 | &gXenIoProtocolGuid,\r |
320 | (VOID**)&XenIo,\r | |
956622c4 AP |
321 | This->DriverBindingHandle,\r |
322 | ControllerHandle,\r | |
323 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
324 | );\r | |
d9fdfd85 | 325 | \r |
956622c4 AP |
326 | if (EFI_ERROR (Status)) {\r |
327 | return Status;\r | |
328 | }\r | |
a154f420 | 329 | \r |
86d968e0 AP |
330 | Status = gBS->OpenProtocol (\r |
331 | ControllerHandle,\r | |
332 | &gEfiDevicePathProtocolGuid,\r | |
333 | (VOID **) &DevicePath,\r | |
334 | This->DriverBindingHandle,\r | |
335 | ControllerHandle,\r | |
336 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
337 | );\r | |
338 | \r | |
339 | if (EFI_ERROR (Status)) {\r | |
340 | goto ErrorOpenningProtocol;\r | |
341 | }\r | |
342 | \r | |
a154f420 AP |
343 | Dev = AllocateZeroPool (sizeof (*Dev));\r |
344 | Dev->Signature = XENBUS_DEVICE_SIGNATURE;\r | |
345 | Dev->This = This;\r | |
346 | Dev->ControllerHandle = ControllerHandle;\r | |
d9fdfd85 | 347 | Dev->XenIo = XenIo;\r |
86d968e0 AP |
348 | Dev->DevicePath = DevicePath;\r |
349 | InitializeListHead (&Dev->ChildList);\r | |
a154f420 AP |
350 | \r |
351 | EfiAcquireLock (&mMyDeviceLock);\r | |
352 | if (mMyDevice != NULL) {\r | |
353 | EfiReleaseLock (&mMyDeviceLock);\r | |
354 | //\r | |
355 | // There is already a XenBus running, only one can be used at a time.\r | |
356 | //\r | |
357 | Status = EFI_ALREADY_STARTED;\r | |
358 | goto ErrorAllocated;\r | |
359 | }\r | |
360 | mMyDevice = Dev;\r | |
361 | EfiReleaseLock (&mMyDeviceLock);\r | |
362 | \r | |
abcbbb14 AP |
363 | Status = XenGetSharedInfoPage (Dev);\r |
364 | if (EFI_ERROR (Status)) {\r | |
70d5086c | 365 | DEBUG ((DEBUG_ERROR, "XenBus: Unable to get the shared info page.\n"));\r |
abcbbb14 AP |
366 | Status = EFI_UNSUPPORTED;\r |
367 | goto ErrorAllocated;\r | |
368 | }\r | |
369 | \r | |
d9fdfd85 | 370 | XenGrantTableInit (Dev);\r |
0fd14246 | 371 | \r |
a9090a94 AP |
372 | Status = XenStoreInit (Dev);\r |
373 | ASSERT_EFI_ERROR (Status);\r | |
374 | \r | |
86d968e0 AP |
375 | XenBusEnumerateBus (Dev);\r |
376 | \r | |
a154f420 AP |
377 | Status = gBS->CreateEvent (EVT_SIGNAL_EXIT_BOOT_SERVICES, TPL_CALLBACK,\r |
378 | NotifyExitBoot,\r | |
379 | (VOID*) Dev,\r | |
380 | &Dev->ExitBootEvent);\r | |
381 | ASSERT_EFI_ERROR (Status);\r | |
382 | \r | |
383 | return EFI_SUCCESS;\r | |
384 | \r | |
385 | ErrorAllocated:\r | |
386 | FreePool (Dev);\r | |
86d968e0 AP |
387 | gBS->CloseProtocol (ControllerHandle, &gEfiDevicePathProtocolGuid,\r |
388 | This->DriverBindingHandle, ControllerHandle);\r | |
389 | ErrorOpenningProtocol:\r | |
d9fdfd85 | 390 | gBS->CloseProtocol (ControllerHandle, &gXenIoProtocolGuid,\r |
956622c4 | 391 | This->DriverBindingHandle, ControllerHandle);\r |
a154f420 | 392 | return Status;\r |
e65e8802 AP |
393 | }\r |
394 | \r | |
395 | /**\r | |
396 | Stops a bus controller.\r | |
397 | \r | |
398 | The Stop() function is designed to be invoked from the EFI boot service DisconnectController().\r | |
399 | As a result, much of the error checking on the parameters to Stop() has been moved\r | |
400 | into this common boot service. It is legal to call Stop() from other locations,\r | |
401 | but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r | |
402 | 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r | |
403 | same driver's Start() function.\r | |
404 | 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r | |
405 | EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r | |
406 | Start() function, and the Start() function must have called OpenProtocol() on\r | |
407 | ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r | |
408 | \r | |
409 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
410 | @param[in] ControllerHandle A handle to the device being stopped. The handle must\r | |
411 | support a bus specific I/O protocol for the driver\r | |
412 | to use to stop the device.\r | |
413 | @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.\r | |
414 | @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL\r | |
415 | if NumberOfChildren is 0.\r | |
416 | \r | |
417 | @retval EFI_SUCCESS The device was stopped.\r | |
418 | @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r | |
419 | \r | |
420 | **/\r | |
421 | EFI_STATUS\r | |
422 | EFIAPI\r | |
423 | XenBusDxeDriverBindingStop (\r | |
424 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
425 | IN EFI_HANDLE ControllerHandle,\r | |
426 | IN UINTN NumberOfChildren,\r | |
427 | IN EFI_HANDLE *ChildHandleBuffer OPTIONAL\r | |
428 | )\r | |
429 | {\r | |
86d968e0 AP |
430 | UINTN Index;\r |
431 | XENBUS_PROTOCOL *XenBusIo;\r | |
432 | XENBUS_PRIVATE_DATA *ChildData;\r | |
433 | EFI_STATUS Status;\r | |
a154f420 AP |
434 | XENBUS_DEVICE *Dev = mMyDevice;\r |
435 | \r | |
86d968e0 AP |
436 | for (Index = 0; Index < NumberOfChildren; Index++) {\r |
437 | Status = gBS->OpenProtocol (\r | |
438 | ChildHandleBuffer[Index],\r | |
439 | &gXenBusProtocolGuid,\r | |
440 | (VOID **) &XenBusIo,\r | |
441 | This->DriverBindingHandle,\r | |
442 | ControllerHandle,\r | |
443 | EFI_OPEN_PROTOCOL_GET_PROTOCOL);\r | |
444 | if (EFI_ERROR (Status)) {\r | |
70d5086c | 445 | DEBUG ((DEBUG_ERROR, "XenBusDxe: get children protocol failed: %r\n", Status));\r |
86d968e0 AP |
446 | continue;\r |
447 | }\r | |
448 | ChildData = XENBUS_PRIVATE_DATA_FROM_THIS (XenBusIo);\r | |
86d968e0 | 449 | \r |
64ef66ba AP |
450 | Status = gBS->CloseProtocol (Dev->ControllerHandle, &gXenIoProtocolGuid,\r |
451 | Dev->This->DriverBindingHandle, ChildData->Handle);\r | |
452 | ASSERT_EFI_ERROR (Status);\r | |
453 | \r | |
86d968e0 AP |
454 | Status = gBS->UninstallMultipleProtocolInterfaces (\r |
455 | ChildData->Handle,\r | |
456 | &gEfiDevicePathProtocolGuid, ChildData->DevicePath,\r | |
457 | &gXenBusProtocolGuid, &ChildData->XenBusIo,\r | |
458 | NULL);\r | |
459 | ASSERT_EFI_ERROR (Status);\r | |
460 | \r | |
461 | FreePool ((VOID*)ChildData->XenBusIo.Type);\r | |
462 | FreePool ((VOID*)ChildData->XenBusIo.Node);\r | |
463 | FreePool ((VOID*)ChildData->XenBusIo.Backend);\r | |
464 | FreePool (ChildData->DevicePath);\r | |
465 | RemoveEntryList (&ChildData->Link);\r | |
466 | FreePool (ChildData);\r | |
467 | }\r | |
468 | if (NumberOfChildren > 0) {\r | |
469 | return EFI_SUCCESS;\r | |
470 | }\r | |
471 | \r | |
a154f420 | 472 | gBS->CloseEvent (Dev->ExitBootEvent);\r |
a9090a94 | 473 | XenStoreDeinit (Dev);\r |
0fd14246 | 474 | XenGrantTableDeinit (Dev);\r |
a154f420 | 475 | \r |
86d968e0 AP |
476 | gBS->CloseProtocol (ControllerHandle, &gEfiDevicePathProtocolGuid,\r |
477 | This->DriverBindingHandle, ControllerHandle);\r | |
d9fdfd85 | 478 | gBS->CloseProtocol (ControllerHandle, &gXenIoProtocolGuid,\r |
956622c4 AP |
479 | This->DriverBindingHandle, ControllerHandle);\r |
480 | \r | |
a154f420 AP |
481 | mMyDevice = NULL;\r |
482 | FreePool (Dev);\r | |
483 | return EFI_SUCCESS;\r | |
e65e8802 | 484 | }\r |