]>
Commit | Line | Data |
---|---|---|
c5f235bb LE |
1 | /** @file\r |
2 | \r | |
3 | VirtIo GPU initialization, and commands (primitives) for the GPU device.\r | |
4 | \r | |
5 | Copyright (C) 2016, Red Hat, Inc.\r | |
6 | \r | |
7 | This program and the accompanying materials are licensed and made available\r | |
8 | under the terms and conditions of the BSD License which accompanies this\r | |
9 | 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, WITHOUT\r | |
13 | WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
c5f235bb LE |
17 | #include <Library/VirtioLib.h>\r |
18 | \r | |
19 | #include "VirtioGpu.h"\r | |
20 | \r | |
21 | /**\r | |
22 | Configure the VirtIo GPU device that underlies VgpuDev.\r | |
23 | \r | |
24 | @param[in,out] VgpuDev The VGPU_DEV object to set up VirtIo messaging for.\r | |
25 | On input, the caller is responsible for having\r | |
26 | initialized VgpuDev->VirtIo. On output, VgpuDev->Ring\r | |
27 | has been initialized, and synchronous VirtIo GPU\r | |
28 | commands (primitives) can be submitted to the device.\r | |
29 | \r | |
30 | @retval EFI_SUCCESS VirtIo GPU configuration successful.\r | |
31 | \r | |
32 | @retval EFI_UNSUPPORTED The host-side configuration of the VirtIo GPU is not\r | |
33 | supported by this driver.\r | |
34 | \r | |
35 | @retval Error codes from underlying functions.\r | |
36 | **/\r | |
37 | EFI_STATUS\r | |
38 | VirtioGpuInit (\r | |
39 | IN OUT VGPU_DEV *VgpuDev\r | |
40 | )\r | |
41 | {\r | |
42 | UINT8 NextDevStat;\r | |
43 | EFI_STATUS Status;\r | |
44 | UINT64 Features;\r | |
45 | UINT16 QueueSize;\r | |
46 | \r | |
47 | //\r | |
48 | // Execute virtio-v1.0-cs04, 3.1.1 Driver Requirements: Device\r | |
49 | // Initialization.\r | |
50 | //\r | |
51 | // 1. Reset the device.\r | |
52 | //\r | |
53 | NextDevStat = 0;\r | |
54 | Status = VgpuDev->VirtIo->SetDeviceStatus (VgpuDev->VirtIo, NextDevStat);\r | |
55 | if (EFI_ERROR (Status)) {\r | |
56 | goto Failed;\r | |
57 | }\r | |
58 | \r | |
59 | //\r | |
60 | // 2. Set the ACKNOWLEDGE status bit [...]\r | |
61 | //\r | |
62 | NextDevStat |= VSTAT_ACK;\r | |
63 | Status = VgpuDev->VirtIo->SetDeviceStatus (VgpuDev->VirtIo, NextDevStat);\r | |
64 | if (EFI_ERROR (Status)) {\r | |
65 | goto Failed;\r | |
66 | }\r | |
67 | \r | |
68 | //\r | |
69 | // 3. Set the DRIVER status bit [...]\r | |
70 | //\r | |
71 | NextDevStat |= VSTAT_DRIVER;\r | |
72 | Status = VgpuDev->VirtIo->SetDeviceStatus (VgpuDev->VirtIo, NextDevStat);\r | |
73 | if (EFI_ERROR (Status)) {\r | |
74 | goto Failed;\r | |
75 | }\r | |
76 | \r | |
77 | //\r | |
78 | // 4. Read device feature bits...\r | |
79 | //\r | |
80 | Status = VgpuDev->VirtIo->GetDeviceFeatures (VgpuDev->VirtIo, &Features);\r | |
81 | if (EFI_ERROR (Status)) {\r | |
82 | goto Failed;\r | |
83 | }\r | |
84 | if ((Features & VIRTIO_F_VERSION_1) == 0) {\r | |
85 | Status = EFI_UNSUPPORTED;\r | |
86 | goto Failed;\r | |
87 | }\r | |
88 | //\r | |
89 | // We only want the most basic 2D features.\r | |
90 | //\r | |
91 | Features &= VIRTIO_F_VERSION_1;\r | |
92 | \r | |
93 | //\r | |
94 | // ... and write the subset of feature bits understood by the [...] driver to\r | |
95 | // the device. [...]\r | |
96 | // 5. Set the FEATURES_OK status bit.\r | |
97 | // 6. Re-read device status to ensure the FEATURES_OK bit is still set [...]\r | |
98 | //\r | |
99 | Status = Virtio10WriteFeatures (VgpuDev->VirtIo, Features, &NextDevStat);\r | |
100 | if (EFI_ERROR (Status)) {\r | |
101 | goto Failed;\r | |
102 | }\r | |
103 | \r | |
104 | //\r | |
105 | // 7. Perform device-specific setup, including discovery of virtqueues for\r | |
106 | // the device [...]\r | |
107 | //\r | |
108 | Status = VgpuDev->VirtIo->SetQueueSel (VgpuDev->VirtIo,\r | |
109 | VIRTIO_GPU_CONTROL_QUEUE);\r | |
110 | if (EFI_ERROR (Status)) {\r | |
111 | goto Failed;\r | |
112 | }\r | |
113 | Status = VgpuDev->VirtIo->GetQueueNumMax (VgpuDev->VirtIo, &QueueSize);\r | |
114 | if (EFI_ERROR (Status)) {\r | |
115 | goto Failed;\r | |
116 | }\r | |
117 | \r | |
118 | //\r | |
119 | // We implement each VirtIo GPU command that we use with two descriptors:\r | |
120 | // request, response.\r | |
121 | //\r | |
122 | if (QueueSize < 2) {\r | |
123 | Status = EFI_UNSUPPORTED;\r | |
124 | goto Failed;\r | |
125 | }\r | |
126 | \r | |
127 | //\r | |
128 | // [...] population of virtqueues [...]\r | |
129 | //\r | |
130 | Status = VirtioRingInit (QueueSize, &VgpuDev->Ring);\r | |
131 | if (EFI_ERROR (Status)) {\r | |
132 | goto Failed;\r | |
133 | }\r | |
134 | Status = VgpuDev->VirtIo->SetQueueAddress (VgpuDev->VirtIo, &VgpuDev->Ring);\r | |
135 | if (EFI_ERROR (Status)) {\r | |
136 | goto ReleaseQueue;\r | |
137 | }\r | |
138 | \r | |
139 | //\r | |
140 | // 8. Set the DRIVER_OK status bit.\r | |
141 | //\r | |
142 | NextDevStat |= VSTAT_DRIVER_OK;\r | |
143 | Status = VgpuDev->VirtIo->SetDeviceStatus (VgpuDev->VirtIo, NextDevStat);\r | |
144 | if (EFI_ERROR (Status)) {\r | |
145 | goto ReleaseQueue;\r | |
146 | }\r | |
147 | \r | |
148 | return EFI_SUCCESS;\r | |
149 | \r | |
150 | ReleaseQueue:\r | |
151 | VirtioRingUninit (&VgpuDev->Ring);\r | |
152 | \r | |
153 | Failed:\r | |
154 | //\r | |
155 | // If any of these steps go irrecoverably wrong, the driver SHOULD set the\r | |
156 | // FAILED status bit to indicate that it has given up on the device (it can\r | |
157 | // reset the device later to restart if desired). [...]\r | |
158 | //\r | |
159 | // VirtIo access failure here should not mask the original error.\r | |
160 | //\r | |
161 | NextDevStat |= VSTAT_FAILED;\r | |
162 | VgpuDev->VirtIo->SetDeviceStatus (VgpuDev->VirtIo, NextDevStat);\r | |
163 | \r | |
164 | return Status;\r | |
165 | }\r | |
166 | \r | |
167 | /**\r | |
168 | De-configure the VirtIo GPU device that underlies VgpuDev.\r | |
169 | \r | |
170 | @param[in,out] VgpuDev The VGPU_DEV object to tear down VirtIo messaging\r | |
171 | for. On input, the caller is responsible for having\r | |
172 | called VirtioGpuInit(). On output, VgpuDev->Ring has\r | |
173 | been uninitialized; VirtIo GPU commands (primitives)\r | |
174 | can no longer be submitted to the device.\r | |
175 | **/\r | |
176 | VOID\r | |
177 | VirtioGpuUninit (\r | |
178 | IN OUT VGPU_DEV *VgpuDev\r | |
179 | )\r | |
180 | {\r | |
181 | //\r | |
182 | // Resetting the VirtIo device makes it release its resources and forget its\r | |
183 | // configuration.\r | |
184 | //\r | |
185 | VgpuDev->VirtIo->SetDeviceStatus (VgpuDev->VirtIo, 0);\r | |
186 | VirtioRingUninit (&VgpuDev->Ring);\r | |
187 | }\r | |
188 | \r | |
189 | /**\r | |
190 | EFI_EVENT_NOTIFY function for the VGPU_DEV.ExitBoot event. It resets the\r | |
191 | VirtIo device, causing it to release its resources and to forget its\r | |
192 | configuration.\r | |
193 | \r | |
194 | This function may only be called (that is, VGPU_DEV.ExitBoot may only be\r | |
195 | signaled) after VirtioGpuInit() returns and before VirtioGpuUninit() is\r | |
196 | called.\r | |
197 | \r | |
198 | @param[in] Event Event whose notification function is being invoked.\r | |
199 | \r | |
200 | @param[in] Context Pointer to the associated VGPU_DEV object.\r | |
201 | **/\r | |
202 | VOID\r | |
203 | EFIAPI\r | |
204 | VirtioGpuExitBoot (\r | |
205 | IN EFI_EVENT Event,\r | |
206 | IN VOID *Context\r | |
207 | )\r | |
208 | {\r | |
209 | VGPU_DEV *VgpuDev;\r | |
210 | \r | |
211 | VgpuDev = Context;\r | |
212 | VgpuDev->VirtIo->SetDeviceStatus (VgpuDev->VirtIo, 0);\r | |
213 | }\r | |
a66ea3b5 LE |
214 | \r |
215 | /**\r | |
216 | Internal utility function that sends a request to the VirtIo GPU device\r | |
217 | model, awaits the answer from the host, and returns a status.\r | |
218 | \r | |
219 | @param[in,out] VgpuDev The VGPU_DEV object that represents the VirtIo GPU\r | |
220 | device. The caller is responsible to have\r | |
221 | successfully invoked VirtioGpuInit() on VgpuDev\r | |
222 | previously, while VirtioGpuUninit() must not have\r | |
223 | been called on VgpuDev.\r | |
224 | \r | |
225 | @param[in] RequestType The type of the request. The caller is responsible\r | |
226 | for providing a VirtioGpuCmd* RequestType which, on\r | |
227 | success, elicits a VirtioGpuRespOkNodata response\r | |
228 | from the host.\r | |
229 | \r | |
230 | @param[in] Fence Whether to enable fencing for this request. Fencing\r | |
231 | forces the host to complete the command before\r | |
232 | producing a response. If Fence is TRUE, then\r | |
233 | VgpuDev->FenceId is consumed, and incremented.\r | |
234 | \r | |
235 | @param[in,out] Header Pointer to the caller-allocated request object. The\r | |
236 | request must start with VIRTIO_GPU_CONTROL_HEADER.\r | |
237 | This function overwrites all fields of Header before\r | |
238 | submitting the request to the host:\r | |
239 | \r | |
240 | - it sets Type from RequestType,\r | |
241 | \r | |
242 | - it sets Flags and FenceId based on Fence,\r | |
243 | \r | |
244 | - it zeroes CtxId and Padding.\r | |
245 | \r | |
246 | @param[in] RequestSize Size of the entire caller-allocated request object,\r | |
247 | including the leading VIRTIO_GPU_CONTROL_HEADER.\r | |
248 | \r | |
249 | @retval EFI_SUCCESS Operation successful.\r | |
250 | \r | |
251 | @retval EFI_DEVICE_ERROR The host rejected the request. The host error\r | |
252 | code has been logged on the EFI_D_ERROR level.\r | |
253 | \r | |
254 | @return Codes for unexpected errors in VirtIo\r | |
255 | messaging.\r | |
256 | **/\r | |
257 | STATIC\r | |
258 | EFI_STATUS\r | |
259 | VirtioGpuSendCommand (\r | |
260 | IN OUT VGPU_DEV *VgpuDev,\r | |
261 | IN VIRTIO_GPU_CONTROL_TYPE RequestType,\r | |
262 | IN BOOLEAN Fence,\r | |
263 | IN OUT volatile VIRTIO_GPU_CONTROL_HEADER *Header,\r | |
264 | IN UINTN RequestSize\r | |
265 | )\r | |
266 | {\r | |
267 | DESC_INDICES Indices;\r | |
268 | volatile VIRTIO_GPU_CONTROL_HEADER Response;\r | |
269 | EFI_STATUS Status;\r | |
270 | UINT32 ResponseSize;\r | |
271 | \r | |
272 | //\r | |
273 | // Initialize Header.\r | |
274 | //\r | |
275 | Header->Type = RequestType;\r | |
276 | if (Fence) {\r | |
277 | Header->Flags = VIRTIO_GPU_FLAG_FENCE;\r | |
278 | Header->FenceId = VgpuDev->FenceId++;\r | |
279 | } else {\r | |
280 | Header->Flags = 0;\r | |
281 | Header->FenceId = 0;\r | |
282 | }\r | |
283 | Header->CtxId = 0;\r | |
284 | Header->Padding = 0;\r | |
285 | \r | |
286 | ASSERT (RequestSize >= sizeof *Header);\r | |
7f1bf51b | 287 | ASSERT (RequestSize <= MAX_UINT32);\r |
a66ea3b5 LE |
288 | \r |
289 | //\r | |
290 | // Compose the descriptor chain.\r | |
291 | //\r | |
292 | VirtioPrepare (&VgpuDev->Ring, &Indices);\r | |
7f1bf51b | 293 | VirtioAppendDesc (&VgpuDev->Ring, (UINTN)Header, (UINT32)RequestSize,\r |
a66ea3b5 LE |
294 | VRING_DESC_F_NEXT, &Indices);\r |
295 | VirtioAppendDesc (&VgpuDev->Ring, (UINTN)&Response, sizeof Response,\r | |
296 | VRING_DESC_F_WRITE, &Indices);\r | |
297 | \r | |
298 | //\r | |
299 | // Send the command.\r | |
300 | //\r | |
301 | Status = VirtioFlush (VgpuDev->VirtIo, VIRTIO_GPU_CONTROL_QUEUE,\r | |
302 | &VgpuDev->Ring, &Indices, &ResponseSize);\r | |
303 | if (EFI_ERROR (Status)) {\r | |
304 | return Status;\r | |
305 | }\r | |
306 | \r | |
307 | //\r | |
308 | // Parse the response.\r | |
309 | //\r | |
310 | if (ResponseSize != sizeof Response) {\r | |
311 | DEBUG ((EFI_D_ERROR, "%a: malformed response to Request=0x%x\n",\r | |
312 | __FUNCTION__, (UINT32)RequestType));\r | |
313 | return EFI_PROTOCOL_ERROR;\r | |
314 | }\r | |
315 | \r | |
316 | if (Response.Type == VirtioGpuRespOkNodata) {\r | |
317 | return EFI_SUCCESS;\r | |
318 | }\r | |
319 | \r | |
320 | DEBUG ((EFI_D_ERROR, "%a: Request=0x%x Response=0x%x\n", __FUNCTION__,\r | |
321 | (UINT32)RequestType, Response.Type));\r | |
322 | return EFI_DEVICE_ERROR;\r | |
323 | }\r | |
324 | \r | |
325 | /**\r | |
326 | The following functions send requests to the VirtIo GPU device model, await\r | |
327 | the answer from the host, and return a status. They share the following\r | |
328 | interface details:\r | |
329 | \r | |
330 | @param[in,out] VgpuDev The VGPU_DEV object that represents the VirtIo GPU\r | |
331 | device. The caller is responsible to have\r | |
332 | successfully invoked VirtioGpuInit() on VgpuDev\r | |
333 | previously, while VirtioGpuUninit() must not have\r | |
334 | been called on VgpuDev.\r | |
335 | \r | |
336 | @retval EFI_INVALID_PARAMETER Invalid command-specific parameters were\r | |
337 | detected by this driver.\r | |
338 | \r | |
339 | @retval EFI_SUCCESS Operation successful.\r | |
340 | \r | |
341 | @retval EFI_DEVICE_ERROR The host rejected the request. The host error\r | |
342 | code has been logged on the EFI_D_ERROR level.\r | |
343 | \r | |
344 | @return Codes for unexpected errors in VirtIo\r | |
345 | messaging.\r | |
346 | \r | |
347 | For the command-specific parameters, please consult the GPU Device section of\r | |
348 | the VirtIo 1.0 specification (see references in\r | |
349 | "OvmfPkg/Include/IndustryStandard/VirtioGpu.h").\r | |
350 | **/\r | |
351 | EFI_STATUS\r | |
352 | VirtioGpuResourceCreate2d (\r | |
353 | IN OUT VGPU_DEV *VgpuDev,\r | |
354 | IN UINT32 ResourceId,\r | |
355 | IN VIRTIO_GPU_FORMATS Format,\r | |
356 | IN UINT32 Width,\r | |
357 | IN UINT32 Height\r | |
358 | )\r | |
359 | {\r | |
360 | volatile VIRTIO_GPU_RESOURCE_CREATE_2D Request;\r | |
361 | \r | |
362 | if (ResourceId == 0) {\r | |
363 | return EFI_INVALID_PARAMETER;\r | |
364 | }\r | |
365 | \r | |
366 | Request.ResourceId = ResourceId;\r | |
367 | Request.Format = (UINT32)Format;\r | |
368 | Request.Width = Width;\r | |
369 | Request.Height = Height;\r | |
370 | \r | |
371 | return VirtioGpuSendCommand (\r | |
372 | VgpuDev,\r | |
373 | VirtioGpuCmdResourceCreate2d,\r | |
374 | FALSE, // Fence\r | |
375 | &Request.Header,\r | |
376 | sizeof Request\r | |
377 | );\r | |
378 | }\r | |
379 | \r | |
380 | EFI_STATUS\r | |
381 | VirtioGpuResourceUnref (\r | |
382 | IN OUT VGPU_DEV *VgpuDev,\r | |
383 | IN UINT32 ResourceId\r | |
384 | )\r | |
385 | {\r | |
386 | volatile VIRTIO_GPU_RESOURCE_UNREF Request;\r | |
387 | \r | |
388 | if (ResourceId == 0) {\r | |
389 | return EFI_INVALID_PARAMETER;\r | |
390 | }\r | |
391 | \r | |
392 | Request.ResourceId = ResourceId;\r | |
393 | Request.Padding = 0;\r | |
394 | \r | |
395 | return VirtioGpuSendCommand (\r | |
396 | VgpuDev,\r | |
397 | VirtioGpuCmdResourceUnref,\r | |
398 | FALSE, // Fence\r | |
399 | &Request.Header,\r | |
400 | sizeof Request\r | |
401 | );\r | |
402 | }\r | |
403 | \r | |
404 | EFI_STATUS\r | |
405 | VirtioGpuResourceAttachBacking (\r | |
406 | IN OUT VGPU_DEV *VgpuDev,\r | |
407 | IN UINT32 ResourceId,\r | |
408 | IN VOID *FirstBackingPage,\r | |
409 | IN UINTN NumberOfPages\r | |
410 | )\r | |
411 | {\r | |
412 | volatile VIRTIO_GPU_RESOURCE_ATTACH_BACKING Request;\r | |
413 | \r | |
414 | if (ResourceId == 0) {\r | |
415 | return EFI_INVALID_PARAMETER;\r | |
416 | }\r | |
417 | \r | |
418 | Request.ResourceId = ResourceId;\r | |
419 | Request.NrEntries = 1;\r | |
420 | Request.Entry.Addr = (UINTN)FirstBackingPage;\r | |
421 | Request.Entry.Length = (UINT32)EFI_PAGES_TO_SIZE (NumberOfPages);\r | |
422 | Request.Entry.Padding = 0;\r | |
423 | \r | |
424 | return VirtioGpuSendCommand (\r | |
425 | VgpuDev,\r | |
426 | VirtioGpuCmdResourceAttachBacking,\r | |
427 | FALSE, // Fence\r | |
428 | &Request.Header,\r | |
429 | sizeof Request\r | |
430 | );\r | |
431 | }\r | |
432 | \r | |
433 | EFI_STATUS\r | |
434 | VirtioGpuResourceDetachBacking (\r | |
435 | IN OUT VGPU_DEV *VgpuDev,\r | |
436 | IN UINT32 ResourceId\r | |
437 | )\r | |
438 | {\r | |
439 | volatile VIRTIO_GPU_RESOURCE_DETACH_BACKING Request;\r | |
440 | \r | |
441 | if (ResourceId == 0) {\r | |
442 | return EFI_INVALID_PARAMETER;\r | |
443 | }\r | |
444 | \r | |
445 | Request.ResourceId = ResourceId;\r | |
446 | Request.Padding = 0;\r | |
447 | \r | |
448 | //\r | |
449 | // In this case, we set Fence to TRUE, because after this function returns,\r | |
450 | // the caller might reasonably want to repurpose the backing pages\r | |
451 | // immediately. Thus we should ensure that the host releases all references\r | |
452 | // to the backing pages before we return.\r | |
453 | //\r | |
454 | return VirtioGpuSendCommand (\r | |
455 | VgpuDev,\r | |
456 | VirtioGpuCmdResourceDetachBacking,\r | |
457 | TRUE, // Fence\r | |
458 | &Request.Header,\r | |
459 | sizeof Request\r | |
460 | );\r | |
461 | }\r | |
462 | \r | |
463 | EFI_STATUS\r | |
464 | VirtioGpuSetScanout (\r | |
465 | IN OUT VGPU_DEV *VgpuDev,\r | |
466 | IN UINT32 X,\r | |
467 | IN UINT32 Y,\r | |
468 | IN UINT32 Width,\r | |
469 | IN UINT32 Height,\r | |
470 | IN UINT32 ScanoutId,\r | |
471 | IN UINT32 ResourceId\r | |
472 | )\r | |
473 | {\r | |
474 | volatile VIRTIO_GPU_SET_SCANOUT Request;\r | |
475 | \r | |
476 | //\r | |
477 | // Unlike for most other commands, ResourceId=0 is valid; it\r | |
478 | // is used to disable a scanout.\r | |
479 | //\r | |
480 | Request.Rectangle.X = X;\r | |
481 | Request.Rectangle.Y = Y;\r | |
482 | Request.Rectangle.Width = Width;\r | |
483 | Request.Rectangle.Height = Height;\r | |
484 | Request.ScanoutId = ScanoutId;\r | |
485 | Request.ResourceId = ResourceId;\r | |
486 | \r | |
487 | return VirtioGpuSendCommand (\r | |
488 | VgpuDev,\r | |
489 | VirtioGpuCmdSetScanout,\r | |
490 | FALSE, // Fence\r | |
491 | &Request.Header,\r | |
492 | sizeof Request\r | |
493 | );\r | |
494 | }\r | |
495 | \r | |
496 | EFI_STATUS\r | |
497 | VirtioGpuTransferToHost2d (\r | |
498 | IN OUT VGPU_DEV *VgpuDev,\r | |
499 | IN UINT32 X,\r | |
500 | IN UINT32 Y,\r | |
501 | IN UINT32 Width,\r | |
502 | IN UINT32 Height,\r | |
503 | IN UINT64 Offset,\r | |
504 | IN UINT32 ResourceId\r | |
505 | )\r | |
506 | {\r | |
507 | volatile VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D Request;\r | |
508 | \r | |
509 | if (ResourceId == 0) {\r | |
510 | return EFI_INVALID_PARAMETER;\r | |
511 | }\r | |
512 | \r | |
513 | Request.Rectangle.X = X;\r | |
514 | Request.Rectangle.Y = Y;\r | |
515 | Request.Rectangle.Width = Width;\r | |
516 | Request.Rectangle.Height = Height;\r | |
517 | Request.Offset = Offset;\r | |
518 | Request.ResourceId = ResourceId;\r | |
519 | Request.Padding = 0;\r | |
520 | \r | |
521 | return VirtioGpuSendCommand (\r | |
522 | VgpuDev,\r | |
523 | VirtioGpuCmdTransferToHost2d,\r | |
524 | FALSE, // Fence\r | |
525 | &Request.Header,\r | |
526 | sizeof Request\r | |
527 | );\r | |
528 | }\r | |
529 | \r | |
530 | EFI_STATUS\r | |
531 | VirtioGpuResourceFlush (\r | |
532 | IN OUT VGPU_DEV *VgpuDev,\r | |
533 | IN UINT32 X,\r | |
534 | IN UINT32 Y,\r | |
535 | IN UINT32 Width,\r | |
536 | IN UINT32 Height,\r | |
537 | IN UINT32 ResourceId\r | |
538 | )\r | |
539 | {\r | |
540 | volatile VIRTIO_GPU_RESOURCE_FLUSH Request;\r | |
541 | \r | |
542 | if (ResourceId == 0) {\r | |
543 | return EFI_INVALID_PARAMETER;\r | |
544 | }\r | |
545 | \r | |
546 | Request.Rectangle.X = X;\r | |
547 | Request.Rectangle.Y = Y;\r | |
548 | Request.Rectangle.Width = Width;\r | |
549 | Request.Rectangle.Height = Height;\r | |
550 | Request.ResourceId = ResourceId;\r | |
551 | Request.Padding = 0;\r | |
552 | \r | |
553 | return VirtioGpuSendCommand (\r | |
554 | VgpuDev,\r | |
555 | VirtioGpuCmdResourceFlush,\r | |
556 | FALSE, // Fence\r | |
557 | &Request.Header,\r | |
558 | sizeof Request\r | |
559 | );\r | |
560 | }\r |