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a2a4fa66 LE |
1 | /** @file\r |
2 | \r | |
3 | Implement the Driver Binding Protocol and the Component Name 2 Protocol for\r | |
4 | the Virtio GPU hybrid driver.\r | |
5 | \r | |
6 | Copyright (C) 2016, Red Hat, Inc.\r | |
7 | \r | |
b26f0cf9 | 8 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
a2a4fa66 LE |
9 | \r |
10 | **/\r | |
11 | \r | |
a2a4fa66 LE |
12 | #include <Library/DevicePathLib.h>\r |
13 | #include <Library/MemoryAllocationLib.h>\r | |
14 | #include <Library/PrintLib.h>\r | |
15 | #include <Library/UefiBootServicesTableLib.h>\r | |
16 | #include <Library/UefiLib.h>\r | |
17 | #include <Protocol/ComponentName2.h>\r | |
18 | #include <Protocol/DevicePath.h>\r | |
19 | #include <Protocol/DriverBinding.h>\r | |
20 | #include <Protocol/PciIo.h>\r | |
21 | \r | |
22 | #include "VirtioGpu.h"\r | |
23 | \r | |
a2a4fa66 LE |
24 | //\r |
25 | // The device path node that describes the Video Output Device Attributes for\r | |
26 | // the single head (UEFI child handle) that we support.\r | |
27 | //\r | |
28 | // The ACPI_DISPLAY_ADR() macro corresponds to Table B-2, section "B.4.2 _DOD"\r | |
29 | // in the ACPI 3.0b spec, or more recently, to Table B-379, section "B.3.2\r | |
30 | // _DOD" in the ACPI 6.0 spec.\r | |
31 | //\r | |
ac0a286f | 32 | STATIC CONST ACPI_ADR_DEVICE_PATH mAcpiAdr = {\r |
a2a4fa66 LE |
33 | { // Header\r |
34 | ACPI_DEVICE_PATH, // Type\r | |
35 | ACPI_ADR_DP, // SubType\r | |
36 | { sizeof mAcpiAdr, 0 }, // Length\r | |
37 | },\r | |
ac0a286f MK |
38 | ACPI_DISPLAY_ADR (\r |
39 | // ADR\r | |
a2a4fa66 LE |
40 | 1, // DeviceIdScheme: use the ACPI\r |
41 | // bit-field definitions\r | |
42 | 0, // HeadId\r | |
43 | 0, // NonVgaOutput\r | |
44 | 1, // BiosCanDetect\r | |
45 | 0, // VendorInfo\r | |
46 | ACPI_ADR_DISPLAY_TYPE_EXTERNAL_DIGITAL, // Type\r | |
47 | 0, // Port\r | |
48 | 0 // Index\r | |
49 | )\r | |
50 | };\r | |
51 | \r | |
52 | //\r | |
53 | // Component Name 2 Protocol implementation.\r | |
54 | //\r | |
ac0a286f | 55 | STATIC CONST EFI_UNICODE_STRING_TABLE mDriverNameTable[] = {\r |
a2a4fa66 LE |
56 | { "en", L"Virtio GPU Driver" },\r |
57 | { NULL, NULL }\r | |
58 | };\r | |
59 | \r | |
60 | STATIC\r | |
61 | EFI_STATUS\r | |
62 | EFIAPI\r | |
63 | VirtioGpuGetDriverName (\r | |
ac0a286f MK |
64 | IN EFI_COMPONENT_NAME2_PROTOCOL *This,\r |
65 | IN CHAR8 *Language,\r | |
66 | OUT CHAR16 **DriverName\r | |
a2a4fa66 LE |
67 | )\r |
68 | {\r | |
ac0a286f MK |
69 | return LookupUnicodeString2 (\r |
70 | Language,\r | |
71 | This->SupportedLanguages,\r | |
72 | mDriverNameTable,\r | |
73 | DriverName,\r | |
74 | FALSE /* Iso639Language */\r | |
75 | );\r | |
a2a4fa66 LE |
76 | }\r |
77 | \r | |
78 | STATIC\r | |
79 | EFI_STATUS\r | |
80 | EFIAPI\r | |
81 | VirtioGpuGetControllerName (\r | |
ac0a286f MK |
82 | IN EFI_COMPONENT_NAME2_PROTOCOL *This,\r |
83 | IN EFI_HANDLE ControllerHandle,\r | |
84 | IN EFI_HANDLE ChildHandle OPTIONAL,\r | |
85 | IN CHAR8 *Language,\r | |
86 | OUT CHAR16 **ControllerName\r | |
a2a4fa66 LE |
87 | )\r |
88 | {\r | |
ac0a286f MK |
89 | EFI_STATUS Status;\r |
90 | VGPU_DEV *VgpuDev;\r | |
a2a4fa66 LE |
91 | \r |
92 | //\r | |
93 | // Look up the VGPU_DEV "protocol interface" on ControllerHandle.\r | |
94 | //\r | |
ac0a286f MK |
95 | Status = gBS->OpenProtocol (\r |
96 | ControllerHandle,\r | |
97 | &gEfiCallerIdGuid,\r | |
98 | (VOID **)&VgpuDev,\r | |
99 | gImageHandle,\r | |
100 | ControllerHandle,\r | |
101 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
102 | );\r | |
a2a4fa66 LE |
103 | if (EFI_ERROR (Status)) {\r |
104 | return Status;\r | |
105 | }\r | |
ac0a286f | 106 | \r |
a2a4fa66 LE |
107 | //\r |
108 | // Sanity check: if we found gEfiCallerIdGuid on ControllerHandle, then we\r | |
109 | // keep its Virtio Device Protocol interface open BY_DRIVER.\r | |
110 | //\r | |
ac0a286f MK |
111 | ASSERT_EFI_ERROR (\r |
112 | EfiTestManagedDevice (\r | |
113 | ControllerHandle,\r | |
114 | gImageHandle,\r | |
115 | &gVirtioDeviceProtocolGuid\r | |
116 | )\r | |
117 | );\r | |
a2a4fa66 LE |
118 | \r |
119 | if (ChildHandle == NULL) {\r | |
120 | //\r | |
121 | // The caller is querying the name of the VGPU_DEV controller.\r | |
122 | //\r | |
ac0a286f MK |
123 | return LookupUnicodeString2 (\r |
124 | Language,\r | |
125 | This->SupportedLanguages,\r | |
126 | VgpuDev->BusName,\r | |
127 | ControllerName,\r | |
128 | FALSE /* Iso639Language */\r | |
129 | );\r | |
a2a4fa66 LE |
130 | }\r |
131 | \r | |
132 | //\r | |
133 | // Otherwise, the caller is looking for the name of the GOP child controller.\r | |
134 | // Check if it is asking about the GOP child controller that we manage. (The\r | |
135 | // condition below covers the case when we haven't produced the GOP child\r | |
136 | // controller yet, or we've destroyed it since.)\r | |
137 | //\r | |
ac0a286f | 138 | if ((VgpuDev->Child == NULL) || (ChildHandle != VgpuDev->Child->GopHandle)) {\r |
a2a4fa66 LE |
139 | return EFI_UNSUPPORTED;\r |
140 | }\r | |
ac0a286f | 141 | \r |
a2a4fa66 LE |
142 | //\r |
143 | // Sanity check: our GOP child controller keeps the VGPU_DEV controller's\r | |
144 | // Virtio Device Protocol interface open BY_CHILD_CONTROLLER.\r | |
145 | //\r | |
ac0a286f MK |
146 | ASSERT_EFI_ERROR (\r |
147 | EfiTestChildHandle (\r | |
148 | ControllerHandle,\r | |
149 | ChildHandle,\r | |
150 | &gVirtioDeviceProtocolGuid\r | |
151 | )\r | |
152 | );\r | |
153 | \r | |
154 | return LookupUnicodeString2 (\r | |
155 | Language,\r | |
156 | This->SupportedLanguages,\r | |
157 | VgpuDev->Child->GopName,\r | |
158 | ControllerName,\r | |
159 | FALSE /* Iso639Language */\r | |
160 | );\r | |
a2a4fa66 LE |
161 | }\r |
162 | \r | |
ac0a286f | 163 | STATIC CONST EFI_COMPONENT_NAME2_PROTOCOL mComponentName2 = {\r |
a2a4fa66 LE |
164 | VirtioGpuGetDriverName,\r |
165 | VirtioGpuGetControllerName,\r | |
166 | "en" // SupportedLanguages (RFC 4646)\r | |
167 | };\r | |
168 | \r | |
169 | //\r | |
170 | // Helper functions for the Driver Binding Protocol Implementation.\r | |
171 | //\r | |
ac0a286f | 172 | \r |
a2a4fa66 LE |
173 | /**\r |
174 | Format the VGPU_DEV controller name, to be looked up and returned by\r | |
175 | VirtioGpuGetControllerName().\r | |
176 | \r | |
177 | @param[in] ControllerHandle The handle that identifies the VGPU_DEV\r | |
178 | controller.\r | |
179 | \r | |
180 | @param[in] AgentHandle The handle of the agent that will attempt to\r | |
181 | temporarily open the PciIo protocol. This is the\r | |
182 | DriverBindingHandle member of the\r | |
183 | EFI_DRIVER_BINDING_PROTOCOL whose Start()\r | |
184 | function is calling this function.\r | |
185 | \r | |
186 | @param[in] DevicePath The device path that is installed on\r | |
187 | ControllerHandle.\r | |
188 | \r | |
189 | @param[out] ControllerName A dynamically allocated unicode string that\r | |
190 | unconditionally says "Virtio GPU Device", with a\r | |
191 | PCI Segment:Bus:Device.Function location\r | |
192 | optionally appended. The latter part is only\r | |
193 | produced if DevicePath contains at least one\r | |
194 | PciIo node; in that case, the most specific such\r | |
195 | node is used for retrieving the location info.\r | |
196 | The caller is responsible for freeing\r | |
197 | ControllerName after use.\r | |
198 | \r | |
199 | @retval EFI_SUCCESS ControllerName has been formatted.\r | |
200 | \r | |
201 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for ControllerName.\r | |
202 | **/\r | |
203 | STATIC\r | |
204 | EFI_STATUS\r | |
205 | FormatVgpuDevName (\r | |
ac0a286f MK |
206 | IN EFI_HANDLE ControllerHandle,\r |
207 | IN EFI_HANDLE AgentHandle,\r | |
208 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r | |
209 | OUT CHAR16 **ControllerName\r | |
a2a4fa66 LE |
210 | )\r |
211 | {\r | |
ac0a286f MK |
212 | EFI_HANDLE PciIoHandle;\r |
213 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
214 | UINTN Segment, Bus, Device, Function;\r | |
215 | STATIC CONST CHAR16 ControllerNameStem[] = L"Virtio GPU Device";\r | |
216 | UINTN ControllerNameSize;\r | |
217 | \r | |
218 | if (EFI_ERROR (\r | |
219 | gBS->LocateDevicePath (\r | |
220 | &gEfiPciIoProtocolGuid,\r | |
221 | &DevicePath,\r | |
222 | &PciIoHandle\r | |
223 | )\r | |
224 | ) ||\r | |
225 | EFI_ERROR (\r | |
226 | gBS->OpenProtocol (\r | |
227 | PciIoHandle,\r | |
228 | &gEfiPciIoProtocolGuid,\r | |
229 | (VOID **)&PciIo,\r | |
230 | AgentHandle,\r | |
231 | ControllerHandle,\r | |
232 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
233 | )\r | |
234 | ) ||\r | |
235 | EFI_ERROR (\r | |
236 | PciIo->GetLocation (\r | |
237 | PciIo,\r | |
238 | &Segment,\r | |
239 | &Bus,\r | |
240 | &Device,\r | |
241 | &Function\r | |
242 | )\r | |
243 | ))\r | |
244 | {\r | |
a2a4fa66 LE |
245 | //\r |
246 | // Failed to retrieve location info, return verbatim copy of static string.\r | |
247 | //\r | |
ac0a286f MK |
248 | *ControllerName = AllocateCopyPool (\r |
249 | sizeof ControllerNameStem,\r | |
250 | ControllerNameStem\r | |
251 | );\r | |
a2a4fa66 LE |
252 | return (*ControllerName == NULL) ? EFI_OUT_OF_RESOURCES : EFI_SUCCESS;\r |
253 | }\r | |
ac0a286f | 254 | \r |
a2a4fa66 LE |
255 | //\r |
256 | // Location info available, format ControllerName dynamically.\r | |
257 | //\r | |
258 | ControllerNameSize = sizeof ControllerNameStem + // includes L'\0'\r | |
259 | sizeof (CHAR16) * (1 + 4 + // Segment\r | |
260 | 1 + 2 + // Bus\r | |
261 | 1 + 2 + // Device\r | |
262 | 1 + 1 // Function\r | |
263 | );\r | |
264 | *ControllerName = AllocatePool (ControllerNameSize);\r | |
265 | if (*ControllerName == NULL) {\r | |
266 | return EFI_OUT_OF_RESOURCES;\r | |
267 | }\r | |
268 | \r | |
ac0a286f MK |
269 | UnicodeSPrintAsciiFormat (\r |
270 | *ControllerName,\r | |
271 | ControllerNameSize,\r | |
272 | "%s %04x:%02x:%02x.%x",\r | |
273 | ControllerNameStem,\r | |
274 | (UINT32)Segment,\r | |
275 | (UINT32)Bus,\r | |
276 | (UINT32)Device,\r | |
277 | (UINT32)Function\r | |
278 | );\r | |
a2a4fa66 LE |
279 | return EFI_SUCCESS;\r |
280 | }\r | |
281 | \r | |
282 | /**\r | |
283 | Dynamically allocate and initialize the VGPU_GOP child object within an\r | |
284 | otherwise configured parent VGPU_DEV object.\r | |
285 | \r | |
286 | This function adds a BY_CHILD_CONTROLLER reference to ParentBusController's\r | |
287 | VIRTIO_DEVICE_PROTOCOL interface.\r | |
288 | \r | |
289 | @param[in,out] ParentBus The pre-initialized VGPU_DEV object that the\r | |
290 | newly created VGPU_GOP object will be the\r | |
291 | child of.\r | |
292 | \r | |
293 | @param[in] ParentDevicePath The device path protocol instance that is\r | |
294 | installed on ParentBusController.\r | |
295 | \r | |
296 | @param[in] ParentBusController The UEFI controller handle on which the\r | |
297 | ParentBus VGPU_DEV object and the\r | |
298 | ParentDevicePath device path protocol are\r | |
299 | installed.\r | |
300 | \r | |
301 | @param[in] DriverBindingHandle The DriverBindingHandle member of\r | |
302 | EFI_DRIVER_BINDING_PROTOCOL whose Start()\r | |
303 | function is calling this function. It is\r | |
304 | passed as AgentHandle to gBS->OpenProtocol()\r | |
305 | when creating the BY_CHILD_CONTROLLER\r | |
306 | reference.\r | |
307 | \r | |
308 | @retval EFI_SUCCESS ParentBus->Child has been created and\r | |
309 | populated, and ParentBus->Child->GopHandle now\r | |
310 | references ParentBusController->VirtIo\r | |
311 | BY_CHILD_CONTROLLER.\r | |
312 | \r | |
313 | @retval EFI_OUT_OF_RESOURCES Memory allocation failed.\r | |
314 | \r | |
315 | @return Error codes from underlying functions.\r | |
316 | **/\r | |
317 | STATIC\r | |
318 | EFI_STATUS\r | |
319 | InitVgpuGop (\r | |
ac0a286f MK |
320 | IN OUT VGPU_DEV *ParentBus,\r |
321 | IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,\r | |
322 | IN EFI_HANDLE ParentBusController,\r | |
323 | IN EFI_HANDLE DriverBindingHandle\r | |
a2a4fa66 LE |
324 | )\r |
325 | {\r | |
ac0a286f MK |
326 | VGPU_GOP *VgpuGop;\r |
327 | EFI_STATUS Status;\r | |
328 | CHAR16 *ParentBusName;\r | |
329 | STATIC CONST CHAR16 NameSuffix[] = L" Head #0";\r | |
330 | UINTN NameSize;\r | |
331 | CHAR16 *Name;\r | |
332 | EFI_TPL OldTpl;\r | |
333 | VOID *ParentVirtIo;\r | |
a2a4fa66 LE |
334 | \r |
335 | VgpuGop = AllocateZeroPool (sizeof *VgpuGop);\r | |
336 | if (VgpuGop == NULL) {\r | |
337 | return EFI_OUT_OF_RESOURCES;\r | |
338 | }\r | |
339 | \r | |
340 | VgpuGop->Signature = VGPU_GOP_SIG;\r | |
341 | VgpuGop->ParentBus = ParentBus;\r | |
342 | \r | |
343 | //\r | |
344 | // Format a human-readable controller name for VGPU_GOP, and stash it for\r | |
345 | // VirtioGpuGetControllerName() to look up. We simply append NameSuffix to\r | |
346 | // ParentBus->BusName.\r | |
347 | //\r | |
ac0a286f MK |
348 | Status = LookupUnicodeString2 (\r |
349 | "en",\r | |
350 | mComponentName2.SupportedLanguages,\r | |
351 | ParentBus->BusName,\r | |
352 | &ParentBusName,\r | |
353 | FALSE /* Iso639Language */\r | |
354 | );\r | |
a2a4fa66 LE |
355 | ASSERT_EFI_ERROR (Status);\r |
356 | NameSize = StrSize (ParentBusName) - sizeof (CHAR16) + sizeof NameSuffix;\r | |
ac0a286f | 357 | Name = AllocatePool (NameSize);\r |
a2a4fa66 LE |
358 | if (Name == NULL) {\r |
359 | Status = EFI_OUT_OF_RESOURCES;\r | |
360 | goto FreeVgpuGop;\r | |
361 | }\r | |
ac0a286f | 362 | \r |
a2a4fa66 | 363 | UnicodeSPrintAsciiFormat (Name, NameSize, "%s%s", ParentBusName, NameSuffix);\r |
ac0a286f MK |
364 | Status = AddUnicodeString2 (\r |
365 | "en",\r | |
366 | mComponentName2.SupportedLanguages,\r | |
367 | &VgpuGop->GopName,\r | |
368 | Name,\r | |
369 | FALSE /* Iso639Language */\r | |
370 | );\r | |
a2a4fa66 LE |
371 | FreePool (Name);\r |
372 | if (EFI_ERROR (Status)) {\r | |
373 | goto FreeVgpuGop;\r | |
374 | }\r | |
375 | \r | |
376 | //\r | |
377 | // Create the child device path.\r | |
378 | //\r | |
ac0a286f MK |
379 | VgpuGop->GopDevicePath = AppendDevicePathNode (\r |
380 | ParentDevicePath,\r | |
381 | &mAcpiAdr.Header\r | |
382 | );\r | |
a2a4fa66 LE |
383 | if (VgpuGop->GopDevicePath == NULL) {\r |
384 | Status = EFI_OUT_OF_RESOURCES;\r | |
385 | goto FreeVgpuGopName;\r | |
386 | }\r | |
387 | \r | |
388 | //\r | |
389 | // Mask protocol notify callbacks until we're done.\r | |
390 | //\r | |
391 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
392 | \r | |
393 | //\r | |
394 | // Create the child handle with the child device path.\r | |
395 | //\r | |
ac0a286f MK |
396 | Status = gBS->InstallProtocolInterface (\r |
397 | &VgpuGop->GopHandle,\r | |
398 | &gEfiDevicePathProtocolGuid,\r | |
399 | EFI_NATIVE_INTERFACE,\r | |
400 | VgpuGop->GopDevicePath\r | |
401 | );\r | |
a2a4fa66 LE |
402 | if (EFI_ERROR (Status)) {\r |
403 | goto FreeDevicePath;\r | |
404 | }\r | |
405 | \r | |
406 | //\r | |
407 | // The child handle must present a reference to the parent handle's Virtio\r | |
408 | // Device Protocol interface.\r | |
409 | //\r | |
ac0a286f MK |
410 | Status = gBS->OpenProtocol (\r |
411 | ParentBusController,\r | |
412 | &gVirtioDeviceProtocolGuid,\r | |
413 | &ParentVirtIo,\r | |
414 | DriverBindingHandle,\r | |
415 | VgpuGop->GopHandle,\r | |
416 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
417 | );\r | |
a2a4fa66 LE |
418 | if (EFI_ERROR (Status)) {\r |
419 | goto UninstallDevicePath;\r | |
420 | }\r | |
ac0a286f | 421 | \r |
a2a4fa66 LE |
422 | ASSERT (ParentVirtIo == ParentBus->VirtIo);\r |
423 | \r | |
424 | //\r | |
425 | // Initialize our Graphics Output Protocol.\r | |
426 | //\r | |
8731debe LE |
427 | // Fill in the function members of VgpuGop->Gop from the template, then set\r |
428 | // up the rest of the GOP infrastructure by calling SetMode() right now.\r | |
a2a4fa66 | 429 | //\r |
8731debe LE |
430 | CopyMem (&VgpuGop->Gop, &mGopTemplate, sizeof mGopTemplate);\r |
431 | Status = VgpuGop->Gop.SetMode (&VgpuGop->Gop, 0);\r | |
a2a4fa66 LE |
432 | if (EFI_ERROR (Status)) {\r |
433 | goto CloseVirtIoByChild;\r | |
434 | }\r | |
435 | \r | |
436 | //\r | |
437 | // Install the Graphics Output Protocol on the child handle.\r | |
438 | //\r | |
ac0a286f MK |
439 | Status = gBS->InstallProtocolInterface (\r |
440 | &VgpuGop->GopHandle,\r | |
441 | &gEfiGraphicsOutputProtocolGuid,\r | |
442 | EFI_NATIVE_INTERFACE,\r | |
443 | &VgpuGop->Gop\r | |
444 | );\r | |
a2a4fa66 LE |
445 | if (EFI_ERROR (Status)) {\r |
446 | goto UninitGop;\r | |
447 | }\r | |
448 | \r | |
449 | //\r | |
450 | // We're done.\r | |
451 | //\r | |
452 | gBS->RestoreTPL (OldTpl);\r | |
453 | ParentBus->Child = VgpuGop;\r | |
454 | return EFI_SUCCESS;\r | |
455 | \r | |
456 | UninitGop:\r | |
8731debe | 457 | ReleaseGopResources (VgpuGop, TRUE /* DisableHead */);\r |
a2a4fa66 LE |
458 | \r |
459 | CloseVirtIoByChild:\r | |
ac0a286f MK |
460 | gBS->CloseProtocol (\r |
461 | ParentBusController,\r | |
462 | &gVirtioDeviceProtocolGuid,\r | |
463 | DriverBindingHandle,\r | |
464 | VgpuGop->GopHandle\r | |
465 | );\r | |
a2a4fa66 LE |
466 | \r |
467 | UninstallDevicePath:\r | |
ac0a286f MK |
468 | gBS->UninstallProtocolInterface (\r |
469 | VgpuGop->GopHandle,\r | |
470 | &gEfiDevicePathProtocolGuid,\r | |
471 | VgpuGop->GopDevicePath\r | |
472 | );\r | |
a2a4fa66 LE |
473 | \r |
474 | FreeDevicePath:\r | |
475 | gBS->RestoreTPL (OldTpl);\r | |
476 | FreePool (VgpuGop->GopDevicePath);\r | |
477 | \r | |
478 | FreeVgpuGopName:\r | |
479 | FreeUnicodeStringTable (VgpuGop->GopName);\r | |
480 | \r | |
481 | FreeVgpuGop:\r | |
482 | FreePool (VgpuGop);\r | |
483 | \r | |
484 | return Status;\r | |
485 | }\r | |
486 | \r | |
487 | /**\r | |
488 | Tear down and release the VGPU_GOP child object within the VGPU_DEV parent\r | |
489 | object.\r | |
490 | \r | |
491 | This function removes the BY_CHILD_CONTROLLER reference from\r | |
492 | ParentBusController's VIRTIO_DEVICE_PROTOCOL interface.\r | |
493 | \r | |
494 | @param[in,out] ParentBus The VGPU_DEV object that the VGPU_GOP child\r | |
495 | object will be removed from.\r | |
496 | \r | |
497 | @param[in] ParentBusController The UEFI controller handle on which the\r | |
498 | ParentBus VGPU_DEV object is installed.\r | |
499 | \r | |
500 | @param[in] DriverBindingHandle The DriverBindingHandle member of\r | |
501 | EFI_DRIVER_BINDING_PROTOCOL whose Stop()\r | |
502 | function is calling this function. It is\r | |
503 | passed as AgentHandle to gBS->CloseProtocol()\r | |
504 | when removing the BY_CHILD_CONTROLLER\r | |
505 | reference.\r | |
506 | **/\r | |
507 | STATIC\r | |
508 | VOID\r | |
509 | UninitVgpuGop (\r | |
ac0a286f MK |
510 | IN OUT VGPU_DEV *ParentBus,\r |
511 | IN EFI_HANDLE ParentBusController,\r | |
512 | IN EFI_HANDLE DriverBindingHandle\r | |
a2a4fa66 LE |
513 | )\r |
514 | {\r | |
ac0a286f MK |
515 | VGPU_GOP *VgpuGop;\r |
516 | EFI_STATUS Status;\r | |
a2a4fa66 LE |
517 | \r |
518 | VgpuGop = ParentBus->Child;\r | |
ac0a286f MK |
519 | Status = gBS->UninstallProtocolInterface (\r |
520 | VgpuGop->GopHandle,\r | |
521 | &gEfiGraphicsOutputProtocolGuid,\r | |
522 | &VgpuGop->Gop\r | |
523 | );\r | |
a2a4fa66 LE |
524 | ASSERT_EFI_ERROR (Status);\r |
525 | \r | |
526 | //\r | |
527 | // Uninitialize VgpuGop->Gop.\r | |
528 | //\r | |
8731debe | 529 | ReleaseGopResources (VgpuGop, TRUE /* DisableHead */);\r |
a2a4fa66 | 530 | \r |
ac0a286f MK |
531 | Status = gBS->CloseProtocol (\r |
532 | ParentBusController,\r | |
533 | &gVirtioDeviceProtocolGuid,\r | |
534 | DriverBindingHandle,\r | |
535 | VgpuGop->GopHandle\r | |
536 | );\r | |
a2a4fa66 LE |
537 | ASSERT_EFI_ERROR (Status);\r |
538 | \r | |
ac0a286f MK |
539 | Status = gBS->UninstallProtocolInterface (\r |
540 | VgpuGop->GopHandle,\r | |
541 | &gEfiDevicePathProtocolGuid,\r | |
542 | VgpuGop->GopDevicePath\r | |
543 | );\r | |
a2a4fa66 LE |
544 | ASSERT_EFI_ERROR (Status);\r |
545 | \r | |
546 | FreePool (VgpuGop->GopDevicePath);\r | |
547 | FreeUnicodeStringTable (VgpuGop->GopName);\r | |
548 | FreePool (VgpuGop);\r | |
549 | \r | |
550 | ParentBus->Child = NULL;\r | |
551 | }\r | |
552 | \r | |
553 | //\r | |
554 | // Driver Binding Protocol Implementation.\r | |
555 | //\r | |
556 | STATIC\r | |
557 | EFI_STATUS\r | |
558 | EFIAPI\r | |
559 | VirtioGpuDriverBindingSupported (\r | |
ac0a286f MK |
560 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
561 | IN EFI_HANDLE ControllerHandle,\r | |
562 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
a2a4fa66 LE |
563 | )\r |
564 | {\r | |
ac0a286f MK |
565 | EFI_STATUS Status;\r |
566 | VIRTIO_DEVICE_PROTOCOL *VirtIo;\r | |
a2a4fa66 LE |
567 | \r |
568 | //\r | |
569 | // - If RemainingDevicePath is NULL: the caller is interested in creating all\r | |
570 | // child handles.\r | |
571 | // - If RemainingDevicePath points to an end node: the caller is not\r | |
572 | // interested in creating any child handle.\r | |
573 | // - Otherwise, the caller would like to create the one child handle\r | |
574 | // specified in RemainingDevicePath. In this case we have to see if the\r | |
575 | // requested device path is supportable.\r | |
576 | //\r | |
ac0a286f | 577 | if ((RemainingDevicePath != NULL) &&\r |
a2a4fa66 | 578 | !IsDevicePathEnd (RemainingDevicePath) &&\r |
ac0a286f MK |
579 | ((DevicePathNodeLength (RemainingDevicePath) != sizeof mAcpiAdr) ||\r |
580 | (CompareMem (RemainingDevicePath, &mAcpiAdr, sizeof mAcpiAdr) != 0)))\r | |
581 | {\r | |
a2a4fa66 LE |
582 | return EFI_UNSUPPORTED;\r |
583 | }\r | |
584 | \r | |
585 | //\r | |
586 | // Open the Virtio Device Protocol interface on the controller, BY_DRIVER.\r | |
587 | //\r | |
ac0a286f MK |
588 | Status = gBS->OpenProtocol (\r |
589 | ControllerHandle,\r | |
590 | &gVirtioDeviceProtocolGuid,\r | |
591 | (VOID **)&VirtIo,\r | |
592 | This->DriverBindingHandle,\r | |
593 | ControllerHandle,\r | |
594 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
595 | );\r | |
a2a4fa66 LE |
596 | if (EFI_ERROR (Status)) {\r |
597 | //\r | |
598 | // If this fails, then by default we cannot support ControllerHandle. There\r | |
599 | // is one exception: we've already bound the device, have not produced any\r | |
600 | // GOP child controller, and now the caller wants us to produce the child\r | |
601 | // controller (either specifically or as part of "all children"). That's\r | |
602 | // allowed.\r | |
603 | //\r | |
604 | if (Status == EFI_ALREADY_STARTED) {\r | |
ac0a286f MK |
605 | EFI_STATUS Status2;\r |
606 | VGPU_DEV *VgpuDev;\r | |
607 | \r | |
608 | Status2 = gBS->OpenProtocol (\r | |
609 | ControllerHandle,\r | |
610 | &gEfiCallerIdGuid,\r | |
611 | (VOID **)&VgpuDev,\r | |
612 | This->DriverBindingHandle,\r | |
613 | ControllerHandle,\r | |
614 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
615 | );\r | |
a2a4fa66 LE |
616 | ASSERT_EFI_ERROR (Status2);\r |
617 | \r | |
ac0a286f MK |
618 | if ((VgpuDev->Child == NULL) &&\r |
619 | ((RemainingDevicePath == NULL) ||\r | |
620 | !IsDevicePathEnd (RemainingDevicePath)))\r | |
621 | {\r | |
a2a4fa66 LE |
622 | Status = EFI_SUCCESS;\r |
623 | }\r | |
624 | }\r | |
625 | \r | |
626 | return Status;\r | |
627 | }\r | |
628 | \r | |
629 | //\r | |
630 | // First BY_DRIVER open; check the VirtIo revision and subsystem.\r | |
631 | //\r | |
ac0a286f MK |
632 | if ((VirtIo->Revision < VIRTIO_SPEC_REVISION (1, 0, 0)) ||\r |
633 | (VirtIo->SubSystemDeviceId != VIRTIO_SUBSYSTEM_GPU_DEVICE))\r | |
634 | {\r | |
a2a4fa66 LE |
635 | Status = EFI_UNSUPPORTED;\r |
636 | goto CloseVirtIo;\r | |
637 | }\r | |
638 | \r | |
639 | //\r | |
640 | // We'll need the device path of the VirtIo device both for formatting\r | |
641 | // VGPU_DEV.BusName and for populating VGPU_GOP.GopDevicePath.\r | |
642 | //\r | |
ac0a286f MK |
643 | Status = gBS->OpenProtocol (\r |
644 | ControllerHandle,\r | |
645 | &gEfiDevicePathProtocolGuid,\r | |
646 | NULL,\r | |
647 | This->DriverBindingHandle,\r | |
648 | ControllerHandle,\r | |
649 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
650 | );\r | |
a2a4fa66 LE |
651 | \r |
652 | CloseVirtIo:\r | |
ac0a286f MK |
653 | gBS->CloseProtocol (\r |
654 | ControllerHandle,\r | |
655 | &gVirtioDeviceProtocolGuid,\r | |
656 | This->DriverBindingHandle,\r | |
657 | ControllerHandle\r | |
658 | );\r | |
a2a4fa66 LE |
659 | \r |
660 | return Status;\r | |
661 | }\r | |
662 | \r | |
663 | STATIC\r | |
664 | EFI_STATUS\r | |
665 | EFIAPI\r | |
666 | VirtioGpuDriverBindingStart (\r | |
ac0a286f MK |
667 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
668 | IN EFI_HANDLE ControllerHandle,\r | |
669 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
a2a4fa66 LE |
670 | )\r |
671 | {\r | |
ac0a286f MK |
672 | EFI_STATUS Status;\r |
673 | VIRTIO_DEVICE_PROTOCOL *VirtIo;\r | |
674 | BOOLEAN VirtIoBoundJustNow;\r | |
675 | VGPU_DEV *VgpuDev;\r | |
676 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
a2a4fa66 LE |
677 | \r |
678 | //\r | |
679 | // Open the Virtio Device Protocol.\r | |
680 | //\r | |
681 | // The result of this operation, combined with the checks in\r | |
682 | // VirtioGpuDriverBindingSupported(), uniquely tells us whether we are\r | |
683 | // binding the VirtIo controller on this call (with or without creating child\r | |
684 | // controllers), or else we're *only* creating child controllers.\r | |
685 | //\r | |
ac0a286f MK |
686 | Status = gBS->OpenProtocol (\r |
687 | ControllerHandle,\r | |
688 | &gVirtioDeviceProtocolGuid,\r | |
689 | (VOID **)&VirtIo,\r | |
690 | This->DriverBindingHandle,\r | |
691 | ControllerHandle,\r | |
692 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
693 | );\r | |
a2a4fa66 LE |
694 | if (EFI_ERROR (Status)) {\r |
695 | //\r | |
696 | // The assertions below are based on the success of\r | |
697 | // VirtioGpuDriverBindingSupported(): we bound ControllerHandle earlier,\r | |
698 | // without producing child handles, and now we're producing the GOP child\r | |
699 | // handle only.\r | |
700 | //\r | |
701 | ASSERT (Status == EFI_ALREADY_STARTED);\r | |
702 | \r | |
ac0a286f MK |
703 | Status = gBS->OpenProtocol (\r |
704 | ControllerHandle,\r | |
705 | &gEfiCallerIdGuid,\r | |
706 | (VOID **)&VgpuDev,\r | |
707 | This->DriverBindingHandle,\r | |
708 | ControllerHandle,\r | |
709 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
710 | );\r | |
a2a4fa66 LE |
711 | ASSERT_EFI_ERROR (Status);\r |
712 | \r | |
713 | ASSERT (VgpuDev->Child == NULL);\r | |
714 | ASSERT (\r | |
ac0a286f MK |
715 | RemainingDevicePath == NULL || !IsDevicePathEnd (RemainingDevicePath)\r |
716 | );\r | |
a2a4fa66 LE |
717 | \r |
718 | VirtIoBoundJustNow = FALSE;\r | |
719 | } else {\r | |
720 | VirtIoBoundJustNow = TRUE;\r | |
721 | \r | |
722 | //\r | |
723 | // Allocate the private structure.\r | |
724 | //\r | |
725 | VgpuDev = AllocateZeroPool (sizeof *VgpuDev);\r | |
726 | if (VgpuDev == NULL) {\r | |
727 | Status = EFI_OUT_OF_RESOURCES;\r | |
728 | goto CloseVirtIo;\r | |
729 | }\r | |
ac0a286f | 730 | \r |
a2a4fa66 LE |
731 | VgpuDev->VirtIo = VirtIo;\r |
732 | }\r | |
733 | \r | |
734 | //\r | |
735 | // Grab the VirtIo controller's device path. This is necessary regardless of\r | |
736 | // VirtIoBoundJustNow.\r | |
737 | //\r | |
ac0a286f MK |
738 | Status = gBS->OpenProtocol (\r |
739 | ControllerHandle,\r | |
740 | &gEfiDevicePathProtocolGuid,\r | |
741 | (VOID **)&DevicePath,\r | |
742 | This->DriverBindingHandle,\r | |
743 | ControllerHandle,\r | |
744 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
745 | );\r | |
a2a4fa66 LE |
746 | if (EFI_ERROR (Status)) {\r |
747 | goto FreeVgpuDev;\r | |
748 | }\r | |
749 | \r | |
750 | //\r | |
751 | // Create VGPU_DEV if we've bound the VirtIo controller right now (that is,\r | |
752 | // if we aren't *only* creating child handles).\r | |
753 | //\r | |
754 | if (VirtIoBoundJustNow) {\r | |
ac0a286f | 755 | CHAR16 *VgpuDevName;\r |
a2a4fa66 LE |
756 | \r |
757 | //\r | |
758 | // Format a human-readable controller name for VGPU_DEV, and stash it for\r | |
759 | // VirtioGpuGetControllerName() to look up.\r | |
760 | //\r | |
ac0a286f MK |
761 | Status = FormatVgpuDevName (\r |
762 | ControllerHandle,\r | |
763 | This->DriverBindingHandle,\r | |
764 | DevicePath,\r | |
765 | &VgpuDevName\r | |
766 | );\r | |
a2a4fa66 LE |
767 | if (EFI_ERROR (Status)) {\r |
768 | goto FreeVgpuDev;\r | |
769 | }\r | |
ac0a286f MK |
770 | \r |
771 | Status = AddUnicodeString2 (\r | |
772 | "en",\r | |
773 | mComponentName2.SupportedLanguages,\r | |
774 | &VgpuDev->BusName,\r | |
775 | VgpuDevName,\r | |
776 | FALSE /* Iso639Language */\r | |
777 | );\r | |
a2a4fa66 LE |
778 | FreePool (VgpuDevName);\r |
779 | if (EFI_ERROR (Status)) {\r | |
780 | goto FreeVgpuDev;\r | |
781 | }\r | |
782 | \r | |
c5f235bb LE |
783 | Status = VirtioGpuInit (VgpuDev);\r |
784 | if (EFI_ERROR (Status)) {\r | |
785 | goto FreeVgpuDevBusName;\r | |
786 | }\r | |
787 | \r | |
ac0a286f MK |
788 | Status = gBS->CreateEvent (\r |
789 | EVT_SIGNAL_EXIT_BOOT_SERVICES,\r | |
790 | TPL_CALLBACK,\r | |
791 | VirtioGpuExitBoot,\r | |
792 | VgpuDev /* NotifyContext */,\r | |
793 | &VgpuDev->ExitBoot\r | |
794 | );\r | |
c5f235bb LE |
795 | if (EFI_ERROR (Status)) {\r |
796 | goto UninitGpu;\r | |
797 | }\r | |
798 | \r | |
a2a4fa66 LE |
799 | //\r |
800 | // Install the VGPU_DEV "protocol interface" on ControllerHandle.\r | |
801 | //\r | |
ac0a286f MK |
802 | Status = gBS->InstallProtocolInterface (\r |
803 | &ControllerHandle,\r | |
804 | &gEfiCallerIdGuid,\r | |
805 | EFI_NATIVE_INTERFACE,\r | |
806 | VgpuDev\r | |
807 | );\r | |
a2a4fa66 | 808 | if (EFI_ERROR (Status)) {\r |
c5f235bb | 809 | goto CloseExitBoot;\r |
a2a4fa66 LE |
810 | }\r |
811 | \r | |
ac0a286f | 812 | if ((RemainingDevicePath != NULL) && IsDevicePathEnd (RemainingDevicePath)) {\r |
a2a4fa66 LE |
813 | //\r |
814 | // No child handle should be produced; we're done.\r | |
815 | //\r | |
ac0a286f MK |
816 | DEBUG ((\r |
817 | DEBUG_INFO,\r | |
818 | "%a: bound VirtIo=%p without producing GOP\n",\r | |
819 | __FUNCTION__,\r | |
820 | (VOID *)VgpuDev->VirtIo\r | |
821 | ));\r | |
a2a4fa66 LE |
822 | return EFI_SUCCESS;\r |
823 | }\r | |
824 | }\r | |
825 | \r | |
826 | //\r | |
827 | // Below we'll produce our single child handle: the caller requested it\r | |
828 | // either specifically, or as part of all child handles.\r | |
829 | //\r | |
830 | ASSERT (VgpuDev->Child == NULL);\r | |
831 | ASSERT (\r | |
ac0a286f MK |
832 | RemainingDevicePath == NULL || !IsDevicePathEnd (RemainingDevicePath)\r |
833 | );\r | |
834 | \r | |
835 | Status = InitVgpuGop (\r | |
836 | VgpuDev,\r | |
837 | DevicePath,\r | |
838 | ControllerHandle,\r | |
839 | This->DriverBindingHandle\r | |
840 | );\r | |
a2a4fa66 LE |
841 | if (EFI_ERROR (Status)) {\r |
842 | goto UninstallVgpuDev;\r | |
843 | }\r | |
844 | \r | |
845 | //\r | |
846 | // We're done.\r | |
847 | //\r | |
ac0a286f MK |
848 | DEBUG ((\r |
849 | DEBUG_INFO,\r | |
850 | "%a: produced GOP %a VirtIo=%p\n",\r | |
851 | __FUNCTION__,\r | |
a2a4fa66 | 852 | VirtIoBoundJustNow ? "while binding" : "for pre-bound",\r |
ac0a286f MK |
853 | (VOID *)VgpuDev->VirtIo\r |
854 | ));\r | |
a2a4fa66 LE |
855 | return EFI_SUCCESS;\r |
856 | \r | |
857 | UninstallVgpuDev:\r | |
858 | if (VirtIoBoundJustNow) {\r | |
ac0a286f MK |
859 | gBS->UninstallProtocolInterface (\r |
860 | ControllerHandle,\r | |
861 | &gEfiCallerIdGuid,\r | |
862 | VgpuDev\r | |
863 | );\r | |
a2a4fa66 LE |
864 | }\r |
865 | \r | |
c5f235bb LE |
866 | CloseExitBoot:\r |
867 | if (VirtIoBoundJustNow) {\r | |
868 | gBS->CloseEvent (VgpuDev->ExitBoot);\r | |
869 | }\r | |
870 | \r | |
871 | UninitGpu:\r | |
872 | if (VirtIoBoundJustNow) {\r | |
873 | VirtioGpuUninit (VgpuDev);\r | |
874 | }\r | |
875 | \r | |
a2a4fa66 LE |
876 | FreeVgpuDevBusName:\r |
877 | if (VirtIoBoundJustNow) {\r | |
878 | FreeUnicodeStringTable (VgpuDev->BusName);\r | |
879 | }\r | |
880 | \r | |
881 | FreeVgpuDev:\r | |
882 | if (VirtIoBoundJustNow) {\r | |
883 | FreePool (VgpuDev);\r | |
884 | }\r | |
885 | \r | |
886 | CloseVirtIo:\r | |
887 | if (VirtIoBoundJustNow) {\r | |
ac0a286f MK |
888 | gBS->CloseProtocol (\r |
889 | ControllerHandle,\r | |
890 | &gVirtioDeviceProtocolGuid,\r | |
891 | This->DriverBindingHandle,\r | |
892 | ControllerHandle\r | |
893 | );\r | |
a2a4fa66 LE |
894 | }\r |
895 | \r | |
896 | return Status;\r | |
897 | }\r | |
898 | \r | |
899 | STATIC\r | |
900 | EFI_STATUS\r | |
901 | EFIAPI\r | |
902 | VirtioGpuDriverBindingStop (\r | |
ac0a286f MK |
903 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
904 | IN EFI_HANDLE ControllerHandle,\r | |
905 | IN UINTN NumberOfChildren,\r | |
906 | IN EFI_HANDLE *ChildHandleBuffer OPTIONAL\r | |
a2a4fa66 LE |
907 | )\r |
908 | {\r | |
ac0a286f MK |
909 | EFI_STATUS Status;\r |
910 | VGPU_DEV *VgpuDev;\r | |
a2a4fa66 LE |
911 | \r |
912 | //\r | |
913 | // Look up the VGPU_DEV "protocol interface" on ControllerHandle.\r | |
914 | //\r | |
ac0a286f MK |
915 | Status = gBS->OpenProtocol (\r |
916 | ControllerHandle,\r | |
917 | &gEfiCallerIdGuid,\r | |
918 | (VOID **)&VgpuDev,\r | |
919 | This->DriverBindingHandle,\r | |
920 | ControllerHandle,\r | |
921 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
922 | );\r | |
a2a4fa66 LE |
923 | if (EFI_ERROR (Status)) {\r |
924 | return Status;\r | |
925 | }\r | |
ac0a286f | 926 | \r |
a2a4fa66 LE |
927 | //\r |
928 | // Sanity check: if we found gEfiCallerIdGuid on ControllerHandle, then we\r | |
929 | // keep its Virtio Device Protocol interface open BY_DRIVER.\r | |
930 | //\r | |
ac0a286f MK |
931 | ASSERT_EFI_ERROR (\r |
932 | EfiTestManagedDevice (\r | |
933 | ControllerHandle,\r | |
934 | This->DriverBindingHandle,\r | |
935 | &gVirtioDeviceProtocolGuid\r | |
936 | )\r | |
937 | );\r | |
a2a4fa66 LE |
938 | \r |
939 | switch (NumberOfChildren) {\r | |
ac0a286f | 940 | case 0:\r |
a2a4fa66 | 941 | //\r |
ac0a286f | 942 | // The caller wants us to unbind the VirtIo controller.\r |
a2a4fa66 | 943 | //\r |
ac0a286f MK |
944 | if (VgpuDev->Child != NULL) {\r |
945 | //\r | |
946 | // We still have the GOP child.\r | |
947 | //\r | |
948 | Status = EFI_DEVICE_ERROR;\r | |
949 | break;\r | |
950 | }\r | |
a2a4fa66 | 951 | \r |
ac0a286f MK |
952 | DEBUG ((\r |
953 | DEBUG_INFO,\r | |
954 | "%a: unbinding GOP-less VirtIo=%p\n",\r | |
955 | __FUNCTION__,\r | |
956 | (VOID *)VgpuDev->VirtIo\r | |
957 | ));\r | |
958 | \r | |
959 | Status = gBS->UninstallProtocolInterface (\r | |
960 | ControllerHandle,\r | |
961 | &gEfiCallerIdGuid,\r | |
962 | VgpuDev\r | |
963 | );\r | |
964 | ASSERT_EFI_ERROR (Status);\r | |
965 | \r | |
966 | Status = gBS->CloseEvent (VgpuDev->ExitBoot);\r | |
967 | ASSERT_EFI_ERROR (Status);\r | |
968 | \r | |
969 | VirtioGpuUninit (VgpuDev);\r | |
970 | FreeUnicodeStringTable (VgpuDev->BusName);\r | |
971 | FreePool (VgpuDev);\r | |
972 | \r | |
973 | Status = gBS->CloseProtocol (\r | |
974 | ControllerHandle,\r | |
975 | &gVirtioDeviceProtocolGuid,\r | |
976 | This->DriverBindingHandle,\r | |
977 | ControllerHandle\r | |
978 | );\r | |
979 | ASSERT_EFI_ERROR (Status);\r | |
980 | break;\r | |
c5f235bb | 981 | \r |
ac0a286f MK |
982 | case 1:\r |
983 | //\r | |
984 | // The caller wants us to destroy our child GOP controller.\r | |
985 | //\r | |
986 | if ((VgpuDev->Child == NULL) ||\r | |
987 | (ChildHandleBuffer[0] != VgpuDev->Child->GopHandle))\r | |
988 | {\r | |
989 | //\r | |
990 | // We have no child controller at the moment, or it differs from the one\r | |
991 | // the caller wants us to destroy. I.e., we don't own the child\r | |
992 | // controller passed in.\r | |
993 | //\r | |
994 | Status = EFI_DEVICE_ERROR;\r | |
995 | break;\r | |
996 | }\r | |
a2a4fa66 | 997 | \r |
ac0a286f MK |
998 | //\r |
999 | // Sanity check: our GOP child controller keeps the VGPU_DEV controller's\r | |
1000 | // Virtio Device Protocol interface open BY_CHILD_CONTROLLER.\r | |
1001 | //\r | |
1002 | ASSERT_EFI_ERROR (\r | |
1003 | EfiTestChildHandle (\r | |
1004 | ControllerHandle,\r | |
1005 | VgpuDev->Child->GopHandle,\r | |
1006 | &gVirtioDeviceProtocolGuid\r | |
1007 | )\r | |
1008 | );\r | |
1009 | \r | |
1010 | DEBUG ((\r | |
1011 | DEBUG_INFO,\r | |
1012 | "%a: destroying GOP under VirtIo=%p\n",\r | |
1013 | __FUNCTION__,\r | |
1014 | (VOID *)VgpuDev->VirtIo\r | |
1015 | ));\r | |
1016 | UninitVgpuGop (VgpuDev, ControllerHandle, This->DriverBindingHandle);\r | |
1017 | break;\r | |
a2a4fa66 | 1018 | \r |
ac0a286f | 1019 | default:\r |
a2a4fa66 | 1020 | //\r |
ac0a286f | 1021 | // Impossible, we never produced more than one child.\r |
a2a4fa66 LE |
1022 | //\r |
1023 | Status = EFI_DEVICE_ERROR;\r | |
1024 | break;\r | |
a2a4fa66 | 1025 | }\r |
ac0a286f | 1026 | \r |
a2a4fa66 LE |
1027 | return Status;\r |
1028 | }\r | |
1029 | \r | |
ac0a286f | 1030 | STATIC EFI_DRIVER_BINDING_PROTOCOL mDriverBinding = {\r |
a2a4fa66 LE |
1031 | VirtioGpuDriverBindingSupported,\r |
1032 | VirtioGpuDriverBindingStart,\r | |
1033 | VirtioGpuDriverBindingStop,\r | |
1034 | 0x10, // Version\r | |
1035 | NULL, // ImageHandle, overwritten in entry point\r | |
1036 | NULL // DriverBindingHandle, ditto\r | |
1037 | };\r | |
1038 | \r | |
1039 | //\r | |
1040 | // Entry point of the driver.\r | |
1041 | //\r | |
1042 | EFI_STATUS\r | |
1043 | EFIAPI\r | |
1044 | VirtioGpuEntryPoint (\r | |
ac0a286f MK |
1045 | IN EFI_HANDLE ImageHandle,\r |
1046 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
a2a4fa66 LE |
1047 | )\r |
1048 | {\r | |
ac0a286f MK |
1049 | return EfiLibInstallDriverBindingComponentName2 (\r |
1050 | ImageHandle,\r | |
1051 | SystemTable,\r | |
1052 | &mDriverBinding,\r | |
1053 | ImageHandle,\r | |
1054 | NULL /* ComponentName */,\r | |
1055 | &mComponentName2\r | |
1056 | );\r | |
a2a4fa66 | 1057 | }\r |