DevVGA_VBVA.cpp@ 71626

最後變更在這個檔案從71626是 71626,由 vboxsync 提交於 7 年前
DevVGA,VBoxC: Code cleanup in progress. bugref:9094
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1	/* $Id: DevVGA_VBVA.cpp 71626 2018-04-02 21:12:58Z vboxsync $ */
2	/** @file
3	* VirtualBox Video Acceleration (VBVA).
4	*/
5
6	/*
7	* Copyright (C) 2006-2017 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.alldomusa.eu.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DEV_VGA
23	#include <VBox/vmm/pdmifs.h>
24	#include <VBox/vmm/pdmdev.h>
25	#include <VBox/vmm/pgm.h>
26	#include <VBox/vmm/ssm.h>
27	#include <VBox/VMMDev.h>
28	#include <VBox/AssertGuest.h>
29	#include <VBoxVideo.h>
30	#include <iprt/alloc.h>
31	#include <iprt/assert.h>
32	#include <iprt/asm.h>
33	#include <iprt/string.h>
34	#include <iprt/param.h>
35	#ifdef VBOX_WITH_VIDEOHWACCEL
36	#include <iprt/semaphore.h>
37	#endif
38
39	#include "DevVGA.h"
40
41	/* A very detailed logging. */
42	#if 0 // def DEBUG_sunlover
43	#define LOGVBVABUFFER(a) LogFlow(a)
44	#else
45	#define LOGVBVABUFFER(a) do {} while (0)
46	#endif
47
48
49	/*********************************************************************************************************************************
50	* Structures and Typedefs *
51	*********************************************************************************************************************************/
52	typedef struct VBVAPARTIALRECORD
53	{
54	uint8_t *pu8;
55	uint32_t cb;
56	} VBVAPARTIALRECORD;
57
58	typedef struct VBVADATA
59	{
60	struct
61	{
62	VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST pVBVA; /< Pointer to the guest memory with the VBVABUFFER. /
63	uint8_t RT_UNTRUSTED_VOLATILE_GUEST pu8Data; /< For convenience, pointer to the guest ring buffer (VBVABUFFER::au8Data). /
64	} guest;
65	uint32_t u32VBVAOffset; /*< VBVABUFFER offset in the guest VRAM. /
66	VBVAPARTIALRECORD partialRecord; /*< Partial record temporary storage. /
67	uint32_t off32Data; /**< The offset where the data starts in the VBVABUFFER.
68	* The host code uses it instead of VBVABUFFER::off32Data. */
69	uint32_t indexRecordFirst; /*< Index of the first filled record in VBVABUFFER::aRecords. /
70	uint32_t cbPartialWriteThreshold; /*< Copy of VBVABUFFER::cbPartialWriteThreshold used by host code. /
71	uint32_t cbData; /*< Copy of VBVABUFFER::cbData used by host code. /
72	} VBVADATA;
73
74	typedef struct VBVAVIEW
75	{
76	VBVAINFOVIEW view;
77	VBVAINFOSCREEN screen;
78	VBVADATA vbva;
79	} VBVAVIEW;
80
81	typedef struct VBVAMOUSESHAPEINFO
82	{
83	bool fSet;
84	bool fVisible;
85	bool fAlpha;
86	uint32_t u32HotX;
87	uint32_t u32HotY;
88	uint32_t u32Width;
89	uint32_t u32Height;
90	uint32_t cbShape;
91	uint32_t cbAllocated;
92	uint8_t *pu8Shape;
93	} VBVAMOUSESHAPEINFO;
94
95	/** @todo saved state: save and restore VBVACONTEXT */
96	typedef struct VBVACONTEXT
97	{
98	uint32_t cViews;
99	VBVAVIEW aViews[VBOX_VIDEO_MAX_SCREENS];
100	VBVAMOUSESHAPEINFO mouseShapeInfo;
101	bool fPaused;
102	uint32_t xCursor;
103	uint32_t yCursor;
104	VBVAMODEHINT aModeHints[VBOX_VIDEO_MAX_SCREENS];
105	} VBVACONTEXT;
106
107
108	static void vbvaDataCleanup(VBVADATA *pVBVAData)
109	{
110	if (pVBVAData->guest.pVBVA)
111	{
112	pVBVAData->guest.pVBVA->hostFlags.u32HostEvents = 0;
113	pVBVAData->guest.pVBVA->hostFlags.u32SupportedOrders = 0;
114	}
115
116	RTMemFree(pVBVAData->partialRecord.pu8);
117
118	RT_ZERO(*pVBVAData);
119	pVBVAData->u32VBVAOffset = HGSMIOFFSET_VOID;
120	}
121
122	/** Copies @a cb bytes from the VBVA ring buffer to the @a pbDst.
123	* Used for partial records or for records which cross the ring boundary.
124	*/
125	static bool vbvaFetchBytes(VBVADATA pVBVAData, uint8_t pbDst, uint32_t cb)
126	{
127	if (cb >= pVBVAData->cbData)
128	{
129	AssertMsgFailed(("cb = 0x%08X, ring buffer size 0x%08X", cb, pVBVAData->cbData));
130	return false;
131	}
132
133	const uint8_t RT_UNTRUSTED_VOLATILE_GUEST *pbSrc = &pVBVAData->guest.pu8Data[pVBVAData->off32Data];
134	const uint32_t u32BytesTillBoundary = pVBVAData->cbData - pVBVAData->off32Data;
135	const int32_t i32Diff = cb - u32BytesTillBoundary;
136
137	if (i32Diff <= 0)
138	{
139	/* Chunk will not cross buffer boundary. */
140	RT_BCOPY_VOLATILE(pbDst, pbSrc, cb);
141	}
142	else
143	{
144	/* Chunk crosses buffer boundary. */
145	RT_BCOPY_VOLATILE(pbDst, pbSrc, u32BytesTillBoundary);
146	RT_BCOPY_VOLATILE(pbDst + u32BytesTillBoundary, &pVBVAData->guest.pu8Data[0], i32Diff);
147	}
148
149	/* Advance data offset and sync with guest. */
150	pVBVAData->off32Data = (pVBVAData->off32Data + cb) % pVBVAData->cbData;
151	pVBVAData->guest.pVBVA->off32Data = pVBVAData->off32Data;
152	return true;
153	}
154
155
156	static bool vbvaPartialRead(uint32_t cbRecord, VBVADATA *pVBVAData)
157	{
158	VBVAPARTIALRECORD *pPartialRecord = &pVBVAData->partialRecord;
159	uint8_t *pu8New;
160
161	LOGVBVABUFFER(("vbvaPartialRead: p = %p, cb = %d, cbRecord 0x%08X\n",
162	pPartialRecord->pu8, pPartialRecord->cb, cbRecord));
163
164	Assert(cbRecord > pPartialRecord->cb); /* Caller ensures this. */
165
166	const uint32_t cbChunk = cbRecord - pPartialRecord->cb;
167	if (cbChunk >= pVBVAData->cbData)
168	{
169	return false;
170	}
171
172	if (pPartialRecord->pu8)
173	{
174	Assert(pPartialRecord->cb);
175	pu8New = (uint8_t *)RTMemRealloc(pPartialRecord->pu8, cbRecord);
176	}
177	else
178	{
179	Assert(!pPartialRecord->cb);
180	pu8New = (uint8_t *)RTMemAlloc(cbRecord);
181	}
182
183	if (!pu8New)
184	{
185	/* Memory allocation failed, fail the function. */
186	Log(("vbvaPartialRead: failed to (re)alocate memory for partial record!!! cbRecord 0x%08X\n",
187	cbRecord));
188
189	return false;
190	}
191
192	/* Fetch data from the ring buffer. */
193	if (!vbvaFetchBytes(pVBVAData, pu8New + pPartialRecord->cb, cbChunk))
194	{
195	return false;
196	}
197
198	pPartialRecord->pu8 = pu8New;
199	pPartialRecord->cb = cbRecord;
200
201	return true;
202	}
203
204	/**
205	* For contiguous chunks just return the address in the buffer. For crossing
206	* boundary - allocate a buffer from heap.
207	*/
208	static bool vbvaFetchCmd(VBVADATA pVBVAData, VBVACMDHDR RT_UNTRUSTED_VOLATILE_GUEST ppHdr, uint32_t pcbCmd)
209	{
210	VBVAPARTIALRECORD *pPartialRecord = &pVBVAData->partialRecord;
211	uint32_t indexRecordFirst = pVBVAData->indexRecordFirst;
212	const uint32_t indexRecordFree = ASMAtomicReadU32(&pVBVAData->guest.pVBVA->indexRecordFree);
213
214	LOGVBVABUFFER(("first = %d, free = %d\n",
215	indexRecordFirst, indexRecordFree));
216
217	if (indexRecordFree >= RT_ELEMENTS(pVBVAData->guest.pVBVA->aRecords))
218	{
219	return false;
220	}
221
222	if (indexRecordFirst == indexRecordFree)
223	{
224	/* No records to process. Return without assigning output variables. */
225	return true;
226	}
227
228	uint32_t cbRecordCurrent = ASMAtomicReadU32(&pVBVAData->guest.pVBVA->aRecords[indexRecordFirst].cbRecord);
229
230	LOGVBVABUFFER(("cbRecord = 0x%08X, pPartialRecord->cb = 0x%08X\n", cbRecordCurrent, pPartialRecord->cb));
231
232	uint32_t cbRecord = cbRecordCurrent & ~VBVA_F_RECORD_PARTIAL;
233
234	if (cbRecord > VBVA_MAX_RECORD_SIZE)
235	{
236	return false;
237	}
238
239	if (pPartialRecord->cb)
240	{
241	/* There is a partial read in process. Continue with it. */
242	Assert (pPartialRecord->pu8);
243
244	LOGVBVABUFFER(("continue partial record cb = %d cbRecord 0x%08X, first = %d, free = %d\n",
245	pPartialRecord->cb, cbRecordCurrent, indexRecordFirst, indexRecordFree));
246
247	if (cbRecord > pPartialRecord->cb)
248	{
249	/* New data has been added to the record. */
250	if (!vbvaPartialRead(cbRecord, pVBVAData))
251	{
252	return false;
253	}
254	}
255
256	if (!(cbRecordCurrent & VBVA_F_RECORD_PARTIAL))
257	{
258	/* The record is completed by guest. Return it to the caller. */
259	ppHdr = (VBVACMDHDR )pPartialRecord->pu8;
260	*pcbCmd = pPartialRecord->cb;
261
262	pPartialRecord->pu8 = NULL;
263	pPartialRecord->cb = 0;
264
265	/* Advance the record index and sync with guest. */
266	pVBVAData->indexRecordFirst = (indexRecordFirst + 1) % RT_ELEMENTS(pVBVAData->guest.pVBVA->aRecords);
267	pVBVAData->guest.pVBVA->indexRecordFirst = pVBVAData->indexRecordFirst;
268
269	LOGVBVABUFFER(("partial done ok, data = %d, free = %d\n",
270	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free));
271	}
272
273	return true;
274	}
275
276	/* A new record need to be processed. */
277	if (cbRecordCurrent & VBVA_F_RECORD_PARTIAL)
278	{
279	/* Current record is being written by guest. '=' is important here,
280	* because the guest will do a FLUSH at this condition.
281	* This partial record is too large for the ring buffer and must
282	* be accumulated in an allocated buffer.
283	*/
284	if (cbRecord >= pVBVAData->cbData - pVBVAData->cbPartialWriteThreshold)
285	{
286	/* Partial read must be started. */
287	if (!vbvaPartialRead(cbRecord, pVBVAData))
288	{
289	return false;
290	}
291
292	LOGVBVABUFFER(("started partial record cb = 0x%08X cbRecord 0x%08X, first = %d, free = %d\n",
293	pPartialRecord->cb, cbRecordCurrent, indexRecordFirst, indexRecordFree));
294	}
295
296	return true;
297	}
298
299	/* Current record is complete. If it is not empty, process it. */
300	if (cbRecord >= pVBVAData->cbData)
301	{
302	return false;
303	}
304
305	if (cbRecord)
306	{
307	/* The size of largest contiguous chunk in the ring buffer. */
308	uint32_t u32BytesTillBoundary = pVBVAData->cbData - pVBVAData->off32Data;
309
310	/* The pointer to data in the ring buffer. */
311	uint8_t RT_UNTRUSTED_VOLATILE_GUEST *pbSrc = &pVBVAData->guest.pu8Data[pVBVAData->off32Data];
312
313	/* Fetch or point the data. */
314	if (u32BytesTillBoundary >= cbRecord)
315	{
316	/* The command does not cross buffer boundary. Return address in the buffer. */
317	ppHdr = (VBVACMDHDR RT_UNTRUSTED_VOLATILE_GUEST )pbSrc;
318
319	/* The data offset will be updated in vbvaReleaseCmd. */
320	}
321	else
322	{
323	/* The command crosses buffer boundary. Rare case, so not optimized. */
324	uint8_t pbDst = (uint8_t )RTMemAlloc(cbRecord);
325	if (!pbDst)
326	{
327	LogFlowFunc (("could not allocate %d bytes from heap!!!\n", cbRecord));
328	return false;
329	}
330
331	vbvaFetchBytes(pVBVAData, pbDst, cbRecord);
332
333	ppHdr = (VBVACMDHDR )pbDst;
334
335	LOGVBVABUFFER(("Allocated from heap %p\n", pbDst));
336	}
337	}
338
339	*pcbCmd = cbRecord;
340
341	/* Advance the record index and sync with guest. */
342	pVBVAData->indexRecordFirst = (indexRecordFirst + 1) % RT_ELEMENTS(pVBVAData->guest.pVBVA->aRecords);
343	pVBVAData->guest.pVBVA->indexRecordFirst = pVBVAData->indexRecordFirst;
344
345	LOGVBVABUFFER(("done ok, data = %d, free = %d\n",
346	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free));
347
348	return true;
349	}
350
351	static void vbvaReleaseCmd(VBVADATA pVBVAData, VBVACMDHDR RT_UNTRUSTED_VOLATILE_GUEST pHdr, uint32_t cbCmd)
352	{
353	VBVAPARTIALRECORD *pPartialRecord = &pVBVAData->partialRecord;
354	const uint8_t RT_UNTRUSTED_VOLATILE_GUEST *pbRingBuffer = pVBVAData->guest.pu8Data;
355
356	if ( (uintptr_t)pHdr >= (uintptr_t)pbRingBuffer
357	&& (uintptr_t)pHdr < (uintptr_t)&pbRingBuffer[pVBVAData->cbData])
358	{
359	/* The pointer is inside ring buffer. Must be continuous chunk. */
360	Assert(pVBVAData->cbData - (uint32_t)((uint8_t *)pHdr - pbRingBuffer) >= cbCmd);
361
362	/* Advance data offset and sync with guest. */
363	pVBVAData->off32Data = (pVBVAData->off32Data + cbCmd) % pVBVAData->cbData;
364	pVBVAData->guest.pVBVA->off32Data = pVBVAData->off32Data;
365
366	Assert(!pPartialRecord->pu8 && pPartialRecord->cb == 0);
367	}
368	else
369	{
370	/* The pointer is outside. It is then an allocated copy. */
371	LOGVBVABUFFER(("Free heap %p\n", pHdr));
372
373	if ((uint8_t *)pHdr == pPartialRecord->pu8)
374	{
375	pPartialRecord->pu8 = NULL;
376	pPartialRecord->cb = 0;
377	}
378	else
379	{
380	Assert(!pPartialRecord->pu8 && pPartialRecord->cb == 0);
381	}
382
383	RTMemFree((void *)pHdr);
384	}
385	}
386
387	static int vbvaFlushProcess(unsigned uScreenId, PVGASTATE pVGAState, VBVADATA *pVBVAData)
388	{
389	LOGVBVABUFFER(("uScreenId %d, indexRecordFirst = %d, indexRecordFree = %d, off32Data = %d, off32Free = %d\n",
390	uScreenId, pVBVAData->indexRecordFirst, pVBVAData->guest.pVBVA->indexRecordFree,
391	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free));
392	struct {
393	/* The rectangle that includes all dirty rectangles. */
394	int32_t xLeft;
395	int32_t xRight;
396	int32_t yTop;
397	int32_t yBottom;
398	} dirtyRect;
399	RT_ZERO(dirtyRect);
400
401	bool fUpdate = false; /* Whether there were any updates. */
402	bool fDirtyEmpty = true;
403
404	for (;;)
405	{
406	/* Fetch the command data. */
407	VBVACMDHDR RT_UNTRUSTED_VOLATILE_GUEST *pHdr = NULL;
408	uint32_t cbCmd = UINT32_MAX;
409	if (!vbvaFetchCmd(pVBVAData, &pHdr, &cbCmd))
410	{
411	LogFunc(("unable to fetch command. off32Data = %d, off32Free = %d!!!\n",
412	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free));
413	return VERR_NOT_SUPPORTED;
414	}
415
416	if (cbCmd == uint32_t(~0))
417	{
418	/* No more commands yet in the queue. */
419	break;
420	}
421
422	if (cbCmd < sizeof(VBVACMDHDR))
423	{
424	LogFunc(("short command. off32Data = %d, off32Free = %d, cbCmd %d!!!\n",
425	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free, cbCmd));
426
427	return VERR_NOT_SUPPORTED;
428	}
429
430	if (cbCmd != 0)
431	{
432	if (!fUpdate)
433	{
434	pVGAState->pDrv->pfnVBVAUpdateBegin(pVGAState->pDrv, uScreenId);
435	fUpdate = true;
436	}
437
438	/* Updates the rectangle and sends the command to the VRDP server. */
439	pVGAState->pDrv->pfnVBVAUpdateProcess(pVGAState->pDrv, uScreenId, pHdr, cbCmd);
440
441	int32_t xRight = pHdr->x + pHdr->w;
442	int32_t yBottom = pHdr->y + pHdr->h;
443
444	/* These are global coords, relative to the primary screen. */
445
446	LOGVBVABUFFER(("cbCmd = %d, x=%d, y=%d, w=%d, h=%d\n",
447	cbCmd, pHdr->x, pHdr->y, pHdr->w, pHdr->h));
448	LogRel3(("%s: update command cbCmd = %d, x=%d, y=%d, w=%d, h=%d\n",
449	__FUNCTION__, cbCmd, pHdr->x, pHdr->y, pHdr->w, pHdr->h));
450
451	/* Collect all rects into one. */
452	if (fDirtyEmpty)
453	{
454	/* This is the first rectangle to be added. */
455	dirtyRect.xLeft = pHdr->x;
456	dirtyRect.yTop = pHdr->y;
457	dirtyRect.xRight = xRight;
458	dirtyRect.yBottom = yBottom;
459	fDirtyEmpty = false;
460	}
461	else
462	{
463	/* Adjust region coordinates. */
464	if (dirtyRect.xLeft > pHdr->x)
465	{
466	dirtyRect.xLeft = pHdr->x;
467	}
468
469	if (dirtyRect.yTop > pHdr->y)
470	{
471	dirtyRect.yTop = pHdr->y;
472	}
473
474	if (dirtyRect.xRight < xRight)
475	{
476	dirtyRect.xRight = xRight;
477	}
478
479	if (dirtyRect.yBottom < yBottom)
480	{
481	dirtyRect.yBottom = yBottom;
482	}
483	}
484	}
485
486	vbvaReleaseCmd(pVBVAData, pHdr, cbCmd);
487	}
488
489	if (fUpdate)
490	{
491	if (dirtyRect.xRight - dirtyRect.xLeft)
492	{
493	LogRel3(("%s: sending update screen=%d, x=%d, y=%d, w=%d, h=%d\n",
494	__FUNCTION__, uScreenId, dirtyRect.xLeft,
495	dirtyRect.yTop, dirtyRect.xRight - dirtyRect.xLeft,
496	dirtyRect.yBottom - dirtyRect.yTop));
497	pVGAState->pDrv->pfnVBVAUpdateEnd(pVGAState->pDrv, uScreenId, dirtyRect.xLeft, dirtyRect.yTop,
498	dirtyRect.xRight - dirtyRect.xLeft, dirtyRect.yBottom - dirtyRect.yTop);
499	}
500	else
501	{
502	pVGAState->pDrv->pfnVBVAUpdateEnd(pVGAState->pDrv, uScreenId, 0, 0, 0, 0);
503	}
504	}
505
506	return VINF_SUCCESS;
507	}
508
509	static int vbvaFlush(PVGASTATE pVGAState, VBVACONTEXT *pCtx)
510	{
511	int rc = VINF_SUCCESS;
512
513	unsigned uScreenId;
514	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
515	{
516	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
517	if (pVBVAData->guest.pVBVA)
518	{
519	rc = vbvaFlushProcess(uScreenId, pVGAState, pVBVAData);
520	if (RT_FAILURE(rc))
521	break;
522	}
523	}
524
525	if (RT_FAILURE(rc))
526	{
527	/* Turn off VBVA processing. */
528	LogRel(("VBVA: Disabling (%Rrc)\n", rc));
529	pVGAState->fGuestCaps = 0;
530	pVGAState->pDrv->pfnVBVAGuestCapabilityUpdate(pVGAState->pDrv, pVGAState->fGuestCaps);
531	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
532	{
533	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
534	if (pVBVAData->guest.pVBVA)
535	{
536	vbvaDataCleanup(pVBVAData);
537	pVGAState->pDrv->pfnVBVADisable(pVGAState->pDrv, uScreenId);
538	}
539	}
540	}
541
542	return rc;
543	}
544
545	static int vbvaResize(PVGASTATE pVGAState, VBVAVIEW pView, const VBVAINFOSCREEN pNewScreen, bool fResetInputMapping)
546	{
547	/* Callers ensure that pNewScreen contains valid data. */
548
549	/* Apply these changes. */
550	pView->screen = *pNewScreen;
551
552	uint8_t *pu8VRAM = pVGAState->vram_ptrR3 + pView->view.u32ViewOffset;
553	return pVGAState->pDrv->pfnVBVAResize (pVGAState->pDrv, &pView->view, &pView->screen, pu8VRAM, fResetInputMapping);
554	}
555
556	static int vbvaEnable(unsigned uScreenId, PVGASTATE pVGAState, VBVACONTEXT *pCtx,
557	VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST *pVBVA, uint32_t u32Offset, bool fRestored)
558	{
559	/*
560	* Copy into non-volatile memory and validate its content.
561	*/
562	VBVABUFFER VbgaSafe;
563	RT_COPY_VOLATILE(VbgaSafe, *pVBVA);
564	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
565
566	uint32_t const cbVBVABuffer = RT_UOFFSETOF(VBVABUFFER, au8Data) + VbgaSafe.cbData;
567	ASSERT_GUEST_RETURN( VbgaSafe.cbData <= UINT32_MAX - RT_UOFFSETOF(VBVABUFFER, au8Data)
568	&& cbVBVABuffer <= pVGAState->vram_size
569	&& u32Offset > pVGAState->vram_size - cbVBVABuffer,
570	VERR_INVALID_PARAMETER);
571	if (!fRestored)
572	{
573	ASSERT_GUEST_RETURN(VbgaSafe.off32Data == 0, VERR_INVALID_PARAMETER);
574	ASSERT_GUEST_RETURN(VbgaSafe.off32Free == 0, VERR_INVALID_PARAMETER);
575	ASSERT_GUEST_RETURN(VbgaSafe.indexRecordFirst == 0, VERR_INVALID_PARAMETER);
576	ASSERT_GUEST_RETURN(VbgaSafe.indexRecordFree == 0, VERR_INVALID_PARAMETER);
577	}
578	ASSERT_GUEST_RETURN( VbgaSafe.cbPartialWriteThreshold < VbgaSafe.cbData
579	&& VbgaSafe.cbPartialWriteThreshold != 0,
580	VERR_INVALID_PARAMETER);
581	RT_UNTRUSTED_VALIDATED_FENCE();
582
583	/*
584	* Okay, try do the job.
585	*/
586	int rc;
587	if (pVGAState->pDrv->pfnVBVAEnable)
588	{
589	pVBVA->hostFlags.u32HostEvents = 0;
590	pVBVA->hostFlags.u32SupportedOrders = 0;
591	rc = pVGAState->pDrv->pfnVBVAEnable(pVGAState->pDrv, uScreenId, &pVBVA->hostFlags, false);
592	if (RT_SUCCESS(rc))
593	{
594	/* pVBVA->hostFlags has been set up by pfnVBVAEnable. */
595	LogFlowFunc(("u32HostEvents=0x%08x u32SupportedOrders=0x%08x\n",
596	pVBVA->hostFlags.u32HostEvents, pVBVA->hostFlags.u32SupportedOrders));
597
598	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
599	pVBVAData->guest.pVBVA = pVBVA;
600	pVBVAData->guest.pu8Data = &pVBVA->au8Data[0];
601	pVBVAData->u32VBVAOffset = u32Offset;
602	pVBVAData->off32Data = VbgaSafe.off32Data;
603	pVBVAData->indexRecordFirst = VbgaSafe.indexRecordFirst;
604	pVBVAData->cbPartialWriteThreshold = VbgaSafe.cbPartialWriteThreshold;
605	pVBVAData->cbData = VbgaSafe.cbData;
606
607	if (!fRestored)
608	{
609	/** @todo Actually this function must not touch the partialRecord structure at all,
610	* because initially it is a zero and when VBVA is disabled this should be set to zero.
611	* But I'm not sure that no code depends on zeroing partialRecord here.
612	* So for now (a quick fix for 4.1) just do not do this if the VM was restored,
613	* when partialRecord might be loaded already from the saved state.
614	*/
615	pVBVAData->partialRecord.pu8 = NULL;
616	pVBVAData->partialRecord.cb = 0;
617	}
618
619	/* VBVA is working so disable the pause. */
620	pCtx->fPaused = false;
621	}
622	}
623	else
624	rc = VERR_NOT_SUPPORTED;
625	return rc;
626	}
627
628	static int vbvaDisable (unsigned uScreenId, PVGASTATE pVGAState, VBVACONTEXT *pCtx)
629	{
630	/* Process any pending orders and empty the VBVA ring buffer. */
631	vbvaFlush (pVGAState, pCtx);
632
633	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
634	vbvaDataCleanup(pVBVAData);
635
636	if (uScreenId == 0)
637	{
638	pVGAState->fGuestCaps = 0;
639	pVGAState->pDrv->pfnVBVAGuestCapabilityUpdate(pVGAState->pDrv, pVGAState->fGuestCaps);
640	}
641	pVGAState->pDrv->pfnVBVADisable(pVGAState->pDrv, uScreenId);
642	return VINF_SUCCESS;
643	}
644
645	bool VBVAIsEnabled(PVGASTATE pVGAState)
646	{
647	PHGSMIINSTANCE pHGSMI = pVGAState->pHGSMI;
648	if (pHGSMI)
649	{
650	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pHGSMI);
651	if (pCtx)
652	{
653	if (pCtx->cViews)
654	{
655	VBVAVIEW * pView = &pCtx->aViews[0];
656	if (pView->vbva.guest.pVBVA)
657	return true;
658	}
659	}
660	}
661	return false;
662	}
663
664	#ifdef DEBUG_sunlover
665	void dumpMouseShapeInfo(const VBVAMOUSESHAPEINFO *pMouseShapeInfo)
666	{
667	LogFlow(("fSet = %d, fVisible %d, fAlpha %d, @%d,%d %dx%d (%p, %d/%d)\n",
668	pMouseShapeInfo->fSet,
669	pMouseShapeInfo->fVisible,
670	pMouseShapeInfo->fAlpha,
671	pMouseShapeInfo->u32HotX,
672	pMouseShapeInfo->u32HotY,
673	pMouseShapeInfo->u32Width,
674	pMouseShapeInfo->u32Height,
675	pMouseShapeInfo->pu8Shape,
676	pMouseShapeInfo->cbShape,
677	pMouseShapeInfo->cbAllocated
678	));
679	}
680	#endif
681
682	static int vbvaUpdateMousePointerShape(PVGASTATE pVGAState, VBVAMOUSESHAPEINFO *pMouseShapeInfo, bool fShape)
683	{
684	LogFlowFunc(("pVGAState %p, pMouseShapeInfo %p, fShape %d\n",
685	pVGAState, pMouseShapeInfo, fShape));
686	#ifdef DEBUG_sunlover
687	dumpMouseShapeInfo(pMouseShapeInfo);
688	#endif
689
690	if (pVGAState->pDrv->pfnVBVAMousePointerShape == NULL)
691	{
692	return VERR_NOT_SUPPORTED;
693	}
694
695	int rc;
696	if (fShape && pMouseShapeInfo->pu8Shape != NULL)
697	{
698	rc = pVGAState->pDrv->pfnVBVAMousePointerShape (pVGAState->pDrv,
699	pMouseShapeInfo->fVisible,
700	pMouseShapeInfo->fAlpha,
701	pMouseShapeInfo->u32HotX,
702	pMouseShapeInfo->u32HotY,
703	pMouseShapeInfo->u32Width,
704	pMouseShapeInfo->u32Height,
705	pMouseShapeInfo->pu8Shape);
706	}
707	else
708	{
709	rc = pVGAState->pDrv->pfnVBVAMousePointerShape (pVGAState->pDrv,
710	pMouseShapeInfo->fVisible,
711	false,
712	0, 0,
713	0, 0,
714	NULL);
715	}
716
717	return rc;
718	}
719
720	static int vbvaMousePointerShape(PVGASTATE pVGAState, VBVACONTEXT *pCtx,
721	const VBVAMOUSEPOINTERSHAPE RT_UNTRUSTED_VOLATILE_GUEST *pShape, HGSMISIZE cbShape)
722	{
723	/*
724	* Make non-volatile copy of the shape header and validate it.
725	*/
726	VBVAMOUSEPOINTERSHAPE SafeShape;
727	RT_COPY_VOLATILE(SafeShape, *pShape);
728	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
729
730	LogFlowFunc(("VBVA_MOUSE_POINTER_SHAPE: i32Result 0x%x, fu32Flags 0x%x, hot spot %d,%d, size %dx%d\n",
731	SafeShape.i32Result, SafeShape.fu32Flags, SafeShape.u32HotX, SafeShape.u32HotY, SafeShape.u32Width, SafeShape.u32Height));
732
733	const bool fVisible = RT_BOOL(SafeShape.fu32Flags & VBOX_MOUSE_POINTER_VISIBLE);
734	const bool fAlpha = RT_BOOL(SafeShape.fu32Flags & VBOX_MOUSE_POINTER_ALPHA);
735	const bool fShape = RT_BOOL(SafeShape.fu32Flags & VBOX_MOUSE_POINTER_SHAPE);
736
737	HGSMISIZE cbPointerData = 0;
738	if (fShape)
739	{
740	static const uint32_t s_cxMax = 2048; //used to be: 8192;
741	static const uint32_t s_cyMax = 2048; //used to be: 8192;
742	ASSERT_GUEST_MSG_RETURN( SafeShape.u32Width <= s_cxMax
743	\|\| SafeShape.u32Height <= s_cyMax,
744	("Too large: %ux%u, max %ux%x\n", SafeShape.u32Width, SafeShape.u32Height, s_cxMax, s_cyMax),
745	VERR_INVALID_PARAMETER);
746
747	cbPointerData = ((((SafeShape.u32Width + 7) / 8) * SafeShape.u32Height + 3) & ~3)
748	+ SafeShape.u32Width * 4 * SafeShape.u32Height;
749
750	ASSERT_GUEST_MSG_RETURN(cbPointerData <= cbShape - RT_UOFFSETOF(VBVAMOUSEPOINTERSHAPE, au8Data),
751	("Insufficent pointer data: Expected %#x, got %#x\n",
752	cbPointerData, cbShape - RT_UOFFSETOF(VBVAMOUSEPOINTERSHAPE, au8Data) ),
753	VERR_INVALID_PARAMETER);
754	}
755	RT_UNTRUSTED_VALIDATED_FENCE();
756
757	/*
758	* Do the job.
759	*/
760	/* Save mouse info it will be used to restore mouse pointer after restoring saved state. */
761	pCtx->mouseShapeInfo.fSet = true;
762	pCtx->mouseShapeInfo.fVisible = fVisible;
763	if (fShape)
764	{
765	/* Data related to shape. */
766	pCtx->mouseShapeInfo.u32HotX = SafeShape.u32HotX;
767	pCtx->mouseShapeInfo.u32HotY = SafeShape.u32HotY;
768	pCtx->mouseShapeInfo.u32Width = SafeShape.u32Width;
769	pCtx->mouseShapeInfo.u32Height = SafeShape.u32Height;
770	pCtx->mouseShapeInfo.fAlpha = fAlpha;
771
772	/* Reallocate memory buffer if necessary. */
773	if (cbPointerData > pCtx->mouseShapeInfo.cbAllocated)
774	{
775	RTMemFree(pCtx->mouseShapeInfo.pu8Shape);
776	pCtx->mouseShapeInfo.pu8Shape = NULL;
777	pCtx->mouseShapeInfo.cbShape = 0;
778
779	uint8_t pu8Shape = (uint8_t )RTMemAlloc(cbPointerData);
780	if (pu8Shape)
781	{
782	pCtx->mouseShapeInfo.pu8Shape = pu8Shape;
783	pCtx->mouseShapeInfo.cbAllocated = cbPointerData;
784	}
785	}
786
787	/* Copy shape bitmaps. */
788	if (pCtx->mouseShapeInfo.pu8Shape)
789	{
790	RT_BCOPY_VOLATILE(pCtx->mouseShapeInfo.pu8Shape, &pShape->au8Data[0], cbPointerData);
791	pCtx->mouseShapeInfo.cbShape = cbPointerData;
792	}
793	}
794
795	return vbvaUpdateMousePointerShape(pVGAState, &pCtx->mouseShapeInfo, fShape);
796	}
797
798	static uint32_t vbvaViewFromBufferPtr(PHGSMIINSTANCE pIns, const VBVACONTEXT *pCtx,
799	const void RT_UNTRUSTED_VOLATILE_GUEST *pvBuffer)
800	{
801	/* Check which view contains the buffer. */
802	HGSMIOFFSET offBuffer = HGSMIPointerToOffsetHost(pIns, pvBuffer);
803	if (offBuffer != HGSMIOFFSET_VOID)
804	{
805	unsigned uScreenId;
806	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
807	{
808	const VBVAINFOVIEW *pView = &pCtx->aViews[uScreenId].view;
809	if ((uint32_t)(offBuffer - pView->u32ViewOffset) < pView->u32ViewSize)
810	return pView->u32ViewIndex;
811	}
812	}
813	return UINT32_MAX;
814	}
815
816	#ifdef DEBUG_sunlover
817	static void dumpctx(const VBVACONTEXT *pCtx)
818	{
819	Log(("VBVACONTEXT dump: cViews %d\n", pCtx->cViews));
820
821	uint32_t iView;
822	for (iView = 0; iView < pCtx->cViews; iView++)
823	{
824	const VBVAVIEW *pView = &pCtx->aViews[iView];
825
826	Log((" view %d o 0x%x s 0x%x m 0x%x\n",
827	pView->view.u32ViewIndex,
828	pView->view.u32ViewOffset,
829	pView->view.u32ViewSize,
830	pView->view.u32MaxScreenSize));
831
832	Log((" screen %d @%d,%d s 0x%x l 0x%x %dx%d bpp %d f 0x%x\n",
833	pView->screen.u32ViewIndex,
834	pView->screen.i32OriginX,
835	pView->screen.i32OriginY,
836	pView->screen.u32StartOffset,
837	pView->screen.u32LineSize,
838	pView->screen.u32Width,
839	pView->screen.u32Height,
840	pView->screen.u16BitsPerPixel,
841	pView->screen.u16Flags));
842
843	Log((" VBVA o 0x%x p %p\n",
844	pView->vbva.u32VBVAOffset,
845	pView->vbva.guest.pVBVA));
846
847	Log((" PR cb 0x%x p %p\n",
848	pView->vbva.partialRecord.cb,
849	pView->vbva.partialRecord.pu8));
850	}
851
852	dumpMouseShapeInfo(&pCtx->mouseShapeInfo);
853	}
854	#endif /* DEBUG_sunlover */
855
856	#define VBOXVBVASAVEDSTATE_VHWAAVAILABLE_MAGIC 0x12345678
857	#define VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC 0x9abcdef0
858
859	#ifdef VBOX_WITH_VIDEOHWACCEL
860	static void vbvaVHWAHHCommandReinit(VBOXVHWACMD* pHdr, VBOXVHWACMD_TYPE enmCmd, int32_t iDisplay)
861	{
862	memset(pHdr, 0, VBOXVHWACMD_HEADSIZE());
863	pHdr->cRefs = 1;
864	pHdr->iDisplay = iDisplay;
865	pHdr->rc = VERR_NOT_IMPLEMENTED;
866	pHdr->enmCmd = enmCmd;
867	pHdr->Flags = VBOXVHWACMD_FLAG_HH_CMD;
868	}
869
870	static VBOXVHWACMD *vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE enmCmd, int32_t iDisplay, VBOXVHWACMD_LENGTH cbCmd)
871	{
872	VBOXVHWACMD pHdr = (VBOXVHWACMD )RTMemAllocZ(cbCmd + VBOXVHWACMD_HEADSIZE());
873	Assert(pHdr);
874	if (pHdr)
875	vbvaVHWAHHCommandReinit(pHdr, enmCmd, iDisplay);
876
877	return pHdr;
878	}
879
880	DECLINLINE(void) vbvaVHWAHHCommandRelease(VBOXVHWACMD *pCmd)
881	{
882	uint32_t cRefs = ASMAtomicDecU32(&pCmd->cRefs);
883	if (!cRefs)
884	RTMemFree(pCmd);
885	}
886
887	DECLINLINE(void) vbvaVHWAHHCommandRetain(VBOXVHWACMD *pCmd)
888	{
889	ASMAtomicIncU32(&pCmd->cRefs);
890	}
891
892	static void vbvaVHWACommandComplete(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand, bool fAsyncCommand)
893	{
894	if (fAsyncCommand)
895	{
896	Assert(pCommand->Flags & VBOXVHWACMD_FLAG_HG_ASYNCH);
897	vbvaVHWACommandCompleteAsync(&pVGAState->IVBVACallbacks, pCommand);
898	}
899	else
900	{
901	Log(("VGA Command <<< Sync rc %d %#p, %d\n", pCommand->rc, pCommand, pCommand->enmCmd));
902	pCommand->Flags &= ~VBOXVHWACMD_FLAG_HG_ASYNCH;
903	}
904
905	}
906
907	static void vbvaVHWACommandCompleteAllPending(PVGASTATE pVGAState, int rc)
908	{
909	if (!ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending))
910	return;
911
912	PDMCritSectEnter(&pVGAState->CritSect, VERR_SEM_BUSY);
913
914	VBOX_VHWA_PENDINGCMD pIter, pNext;
915	RTListForEachSafe(&pVGAState->pendingVhwaCommands.PendingList, pIter, pNext, VBOX_VHWA_PENDINGCMD, Node)
916	{
917	pIter->pCommand->rc = rc;
918	vbvaVHWACommandComplete(pVGAState, pIter->pCommand, true);
919
920	/* the command is submitted/processed, remove from the pend list */
921	RTListNodeRemove(&pIter->Node);
922	ASMAtomicDecU32(&pVGAState->pendingVhwaCommands.cPending);
923	RTMemFree(pIter);
924	}
925
926	PDMCritSectLeave(&pVGAState->CritSect);
927	}
928
929	static void vbvaVHWACommandClearAllPending(PVGASTATE pVGAState)
930	{
931	if (!ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending))
932	return;
933
934	PDMCritSectEnter(&pVGAState->CritSect, VERR_SEM_BUSY);
935
936	VBOX_VHWA_PENDINGCMD pIter, pNext;
937	RTListForEachSafe(&pVGAState->pendingVhwaCommands.PendingList, pIter, pNext, VBOX_VHWA_PENDINGCMD, Node)
938	{
939	RTListNodeRemove(&pIter->Node);
940	ASMAtomicDecU32(&pVGAState->pendingVhwaCommands.cPending);
941	RTMemFree(pIter);
942	}
943
944	PDMCritSectLeave(&pVGAState->CritSect);
945	}
946
947	static void vbvaVHWACommandPend(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand)
948	{
949	int rc = VERR_BUFFER_OVERFLOW;
950
951	if (ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending) < VBOX_VHWA_MAX_PENDING_COMMANDS)
952	{
953	VBOX_VHWA_PENDINGCMD pPend = (VBOX_VHWA_PENDINGCMD )RTMemAlloc(sizeof(*pPend));
954	if (pPend)
955	{
956	pCommand->Flags \|= VBOXVHWACMD_FLAG_HG_ASYNCH;
957	pPend->pCommand = pCommand;
958	PDMCritSectEnter(&pVGAState->CritSect, VERR_SEM_BUSY);
959	if (ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending) < VBOX_VHWA_MAX_PENDING_COMMANDS)
960	{
961	RTListAppend(&pVGAState->pendingVhwaCommands.PendingList, &pPend->Node);
962	ASMAtomicIncU32(&pVGAState->pendingVhwaCommands.cPending);
963	PDMCritSectLeave(&pVGAState->CritSect);
964	return;
965	}
966	PDMCritSectLeave(&pVGAState->CritSect);
967	LogRel(("VBVA: Pending command count has reached its threshold.. completing them all.."));
968	RTMemFree(pPend);
969	}
970	else
971	rc = VERR_NO_MEMORY;
972	}
973	else
974	LogRel(("VBVA: Pending command count has reached its threshold, completing them all.."));
975
976	vbvaVHWACommandCompleteAllPending(pVGAState, rc);
977
978	pCommand->rc = rc;
979
980	vbvaVHWACommandComplete(pVGAState, pCommand, false);
981	}
982
983	static bool vbvaVHWACommandCanPend(VBOXVHWACMD_TYPE enmCmd)
984	{
985	switch (enmCmd)
986	{
987	case VBOXVHWACMD_TYPE_HH_CONSTRUCT:
988	case VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN:
989	case VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND:
990	case VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM:
991	case VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM:
992	return false;
993	default:
994	return true;
995	}
996	}
997
998	static int vbvaVHWACommandSavePending(PVGASTATE pVGAState, PSSMHANDLE pSSM)
999	{
1000	int rc = SSMR3PutU32(pSSM, pVGAState->pendingVhwaCommands.cPending);
1001	AssertRCReturn(rc, rc);
1002
1003	VBOX_VHWA_PENDINGCMD *pIter;
1004	RTListForEach(&pVGAState->pendingVhwaCommands.PendingList, pIter, VBOX_VHWA_PENDINGCMD, Node)
1005	{
1006	AssertContinue((uintptr_t)pIter->pCommand - (uintptr_t)pVGAState->vram_ptrR3 < pVGAState->vram_size);
1007	rc = SSMR3PutU32(pSSM, (uint32_t)(((uint8_t )pIter->pCommand) - ((uint8_t )pVGAState->vram_ptrR3)));
1008	AssertRCReturn(rc, rc);
1009	}
1010	return rc;
1011	}
1012
1013	static int vbvaVHWACommandLoadPending(PVGASTATE pVGAState, PSSMHANDLE pSSM, uint32_t u32Version)
1014	{
1015	if (u32Version < VGA_SAVEDSTATE_VERSION_WITH_PENDVHWA)
1016	return VINF_SUCCESS;
1017
1018	uint32_t u32;
1019	int rc = SSMR3GetU32(pSSM, &u32);
1020	AssertRCReturn(rc, rc);
1021	for (uint32_t i = 0; i < u32; ++i)
1022	{
1023	uint32_t off32;
1024	rc = SSMR3GetU32(pSSM, &off32);
1025	AssertRCReturn(rc, rc);
1026	VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand
1027	= (VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST )((uint8_t volatile )pVGAState->vram_ptrR3 + off32);
1028	vbvaVHWACommandPend(pVGAState, pCommand);
1029	}
1030	return rc;
1031	}
1032
1033
1034	/** Worker for vbvaVHWACommandSubmit. */
1035	static bool vbvaVHWACommandSubmitInner(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST pCommand, bool pfPending)
1036	{
1037	*pfPending = false;
1038
1039	/*
1040	* Read the command type and validate it and our driver state.
1041	*/
1042	VBOXVHWACMD_TYPE enmCmd = pCommand->enmCmd;
1043	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
1044
1045	bool fGuestCmd = (uintptr_t)pCommand - (uintptr_t)pVGAState->vram_ptrR3 < pVGAState->vram_size;
1046	ASSERT_GUEST_LOGREL_MSG_STMT_RETURN( !fGuestCmd
1047	\|\| ( enmCmd != VBOXVHWACMD_TYPE_HH_CONSTRUCT
1048	&& enmCmd != VBOXVHWACMD_TYPE_HH_RESET
1049	&& enmCmd != VBOXVHWACMD_TYPE_HH_DISABLE
1050	&& enmCmd != VBOXVHWACMD_TYPE_HH_ENABLE
1051	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN
1052	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND
1053	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM
1054	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM),
1055	("enmCmd=%d\n", enmCmd),
1056	pCommand->rc = VERR_INVALID_PARAMETER,
1057	true);
1058	ASSERT_GUEST_STMT_RETURN(pVGAState->pDrv->pfnVHWACommandProcess, pCommand->rc = VERR_INVALID_STATE, true);
1059	RT_UNTRUSTED_VALIDATED_FENCE();
1060
1061	/*
1062	* Call the driver to process the command.
1063	*/
1064	Log(("VGA Command >>> %#p, %d\n", pCommand, enmCmd));
1065	int rc = pVGAState->pDrv->pfnVHWACommandProcess(pVGAState->pDrv, enmCmd, fGuestCmd, pCommand);
1066	if (rc == VINF_CALLBACK_RETURN)
1067	{
1068	Log(("VGA Command --- Going Async %#p, %d\n", pCommand, enmCmd));
1069	*pfPending = true;
1070	return true; /* Command will be completed asynchronously by the driver and need not be put in the pending list. */
1071	}
1072
1073	if (rc == VERR_INVALID_STATE)
1074	{
1075	Log(("VGA Command --- Trying Pend %#p, %d\n", pCommand, enmCmd));
1076	if (vbvaVHWACommandCanPend(enmCmd))
1077	{
1078	Log(("VGA Command --- Can Pend %#p, %d\n", pCommand, enmCmd));
1079	*pfPending = true;
1080	return false; /* put on pending list so it can be retried?? */
1081	}
1082
1083	Log(("VGA Command --- Can NOT Pend %#p, %d\n", pCommand, enmCmd));
1084	}
1085	else
1086	Log(("VGA Command --- Going Complete Sync rc %d %#p, %d\n", rc, pCommand, enmCmd));
1087
1088	/* the command was completed, take a special care about it (see caller) */
1089	pCommand->rc = rc;
1090	return true;
1091	}
1092
1093
1094	static bool vbvaVHWACommandSubmit(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand, bool fAsyncCommand)
1095	{
1096	bool fPending = false;
1097	bool fRet = vbvaVHWACommandSubmitInner(pVGAState, pCommand, &fPending);
1098	if (!fPending)
1099	vbvaVHWACommandComplete(pVGAState, pCommand, fAsyncCommand);
1100	return fRet;
1101	}
1102
1103
1104	/**
1105	* @returns false if commands are pending, otherwise true.
1106	*/
1107	static bool vbvaVHWACheckPendingCommands(PVGASTATE pVGAState)
1108	{
1109	if (!ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending))
1110	return true;
1111
1112	PDMCritSectEnter(&pVGAState->CritSect, VERR_SEM_BUSY);
1113
1114	VBOX_VHWA_PENDINGCMD pIter, pNext;
1115	RTListForEachSafe(&pVGAState->pendingVhwaCommands.PendingList, pIter, pNext, VBOX_VHWA_PENDINGCMD, Node)
1116	{
1117	if (!vbvaVHWACommandSubmit(pVGAState, pIter->pCommand, true))
1118	{
1119	PDMCritSectLeave(&pVGAState->CritSect);
1120	return false; /* the command should be still pending */
1121	}
1122
1123	/* the command is submitted/processed, remove from the pend list */
1124	RTListNodeRemove(&pIter->Node);
1125	ASMAtomicDecU32(&pVGAState->pendingVhwaCommands.cPending);
1126	RTMemFree(pIter);
1127	}
1128
1129	PDMCritSectLeave(&pVGAState->CritSect);
1130
1131	return true;
1132	}
1133
1134	void vbvaTimerCb(PVGASTATE pVGAState)
1135	{
1136	vbvaVHWACheckPendingCommands(pVGAState);
1137	}
1138
1139	static void vbvaVHWAHandleCommand(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCmd)
1140	{
1141	if (vbvaVHWACheckPendingCommands(pVGAState))
1142	{
1143	if (vbvaVHWACommandSubmit(pVGAState, pCmd, false))
1144	return;
1145	}
1146
1147	vbvaVHWACommandPend(pVGAState, pCmd);
1148	}
1149
1150	static DECLCALLBACK(void) vbvaVHWAHHCommandSetEventCallback(void * pContext)
1151	{
1152	RTSemEventSignal((RTSEMEVENT)pContext);
1153	}
1154
1155	static int vbvaVHWAHHCommandPost(PVGASTATE pVGAState, VBOXVHWACMD *pCmd)
1156	{
1157	RTSEMEVENT hComplEvent;
1158	int rc = RTSemEventCreate(&hComplEvent);
1159	AssertRC(rc);
1160	if (RT_SUCCESS(rc))
1161	{
1162	/* ensure the cmd is not deleted until we process it */
1163	vbvaVHWAHHCommandRetain(pCmd);
1164
1165	VBOXVHWA_HH_CALLBACK_SET(pCmd, vbvaVHWAHHCommandSetEventCallback, (void *)hComplEvent);
1166	vbvaVHWAHandleCommand(pVGAState, pCmd);
1167
1168	if ((ASMAtomicReadU32((volatile uint32_t *)&pCmd->Flags) & VBOXVHWACMD_FLAG_HG_ASYNCH) != 0)
1169	rc = RTSemEventWaitNoResume(hComplEvent, RT_INDEFINITE_WAIT); /** @todo Why the NoResume and event leaking here? */
1170	/* else: the command is completed */
1171
1172	AssertRC(rc);
1173	if (RT_SUCCESS(rc))
1174	RTSemEventDestroy(hComplEvent);
1175
1176	vbvaVHWAHHCommandRelease(pCmd);
1177	}
1178	return rc;
1179	}
1180
1181	int vbvaVHWAConstruct(PVGASTATE pVGAState)
1182	{
1183	pVGAState->pendingVhwaCommands.cPending = 0;
1184	RTListInit(&pVGAState->pendingVhwaCommands.PendingList);
1185
1186	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_CONSTRUCT, 0, sizeof(VBOXVHWACMD_HH_CONSTRUCT));
1187	Assert(pCmd);
1188	if(pCmd)
1189	{
1190	uint32_t iDisplay = 0;
1191	int rc = VINF_SUCCESS;
1192	VBOXVHWACMD_HH_CONSTRUCT *pBody = VBOXVHWACMD_BODY_HOST_HEAP(pCmd, VBOXVHWACMD_HH_CONSTRUCT);
1193
1194	do
1195	{
1196	memset(pBody, 0, sizeof(VBOXVHWACMD_HH_CONSTRUCT));
1197
1198	PPDMDEVINS pDevIns = pVGAState->pDevInsR3;
1199	PVM pVM = PDMDevHlpGetVM(pDevIns);
1200
1201	pBody->pVM = pVM;
1202	pBody->pvVRAM = pVGAState->vram_ptrR3;
1203	pBody->cbVRAM = pVGAState->vram_size;
1204
1205	rc = vbvaVHWAHHCommandPost(pVGAState, pCmd);
1206	ASMCompilerBarrier();
1207
1208	AssertRC(rc);
1209	if (RT_SUCCESS(rc))
1210	{
1211	rc = pCmd->rc;
1212	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NOT_IMPLEMENTED, ("%Rrc\n", rc));
1213	if(rc == VERR_NOT_IMPLEMENTED)
1214	{
1215	/** @todo set some flag in pVGAState indicating VHWA is not supported */
1216	/* VERR_NOT_IMPLEMENTED is not a failure, we just do not support it */
1217	rc = VINF_SUCCESS;
1218	}
1219
1220	if (!RT_SUCCESS(rc))
1221	break;
1222	}
1223	else
1224	break;
1225
1226	++iDisplay;
1227	if (iDisplay >= pVGAState->cMonitors)
1228	break;
1229	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_CONSTRUCT, (int32_t)iDisplay);
1230	} while (true);
1231
1232	vbvaVHWAHHCommandRelease(pCmd);
1233
1234	return rc;
1235	}
1236	return VERR_OUT_OF_RESOURCES;
1237	}
1238
1239	int vbvaVHWAReset(PVGASTATE pVGAState)
1240	{
1241	vbvaVHWACommandClearAllPending(pVGAState);
1242
1243	/* ensure we have all pending cmds processed and h->g cmds disabled */
1244	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_RESET, 0, 0);
1245	Assert(pCmd);
1246	if (pCmd)
1247	{
1248	int rc = VINF_SUCCESS;
1249	uint32_t iDisplay = 0;
1250
1251	do
1252	{
1253	rc = vbvaVHWAHHCommandPost(pVGAState, pCmd);
1254	AssertRC(rc);
1255	if(RT_SUCCESS(rc))
1256	{
1257	rc = pCmd->rc;
1258	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NOT_IMPLEMENTED, ("%Rrc\n", rc));
1259	if (rc == VERR_NOT_IMPLEMENTED)
1260	rc = VINF_SUCCESS;
1261	}
1262
1263	if (!RT_SUCCESS(rc))
1264	break;
1265
1266	++iDisplay;
1267	if (iDisplay >= pVGAState->cMonitors)
1268	break;
1269	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_RESET, (int32_t)iDisplay);
1270
1271	} while (true);
1272
1273	vbvaVHWAHHCommandRelease(pCmd);
1274
1275	return rc;
1276	}
1277	return VERR_OUT_OF_RESOURCES;
1278	}
1279
1280	typedef DECLCALLBACK(bool) FNVBOXVHWAHHCMDPRECB(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext);
1281	typedef FNVBOXVHWAHHCMDPRECB *PFNVBOXVHWAHHCMDPRECB;
1282
1283	typedef DECLCALLBACK(bool) FNVBOXVHWAHHCMDPOSTCB(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, int rc, void pvContext);
1284	typedef FNVBOXVHWAHHCMDPOSTCB *PFNVBOXVHWAHHCMDPOSTCB;
1285
1286	int vbvaVHWAHHPost(PVGASTATE pVGAState, VBOXVHWACMD pCmd, PFNVBOXVHWAHHCMDPRECB pfnPre, PFNVBOXVHWAHHCMDPOSTCB pfnPost, void pvContext)
1287	{
1288	const VBOXVHWACMD_TYPE enmType = pCmd->enmCmd;
1289	int rc = VINF_SUCCESS;
1290	uint32_t iDisplay = 0;
1291
1292	do
1293	{
1294	if (!pfnPre \|\| pfnPre(pVGAState, pCmd, iDisplay, pvContext))
1295	{
1296	rc = vbvaVHWAHHCommandPost(pVGAState, pCmd);
1297	AssertRC(rc);
1298	if (pfnPost)
1299	{
1300	if (!pfnPost(pVGAState, pCmd, iDisplay, rc, pvContext))
1301	{
1302	rc = VINF_SUCCESS;
1303	break;
1304	}
1305	rc = VINF_SUCCESS;
1306	}
1307	else if(RT_SUCCESS(rc))
1308	{
1309	rc = pCmd->rc;
1310	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NOT_IMPLEMENTED, ("%Rrc\n", rc));
1311	if(rc == VERR_NOT_IMPLEMENTED)
1312	{
1313	rc = VINF_SUCCESS;
1314	}
1315	}
1316
1317	if (!RT_SUCCESS(rc))
1318	break;
1319	}
1320
1321	++iDisplay;
1322	if (iDisplay >= pVGAState->cMonitors)
1323	break;
1324	vbvaVHWAHHCommandReinit(pCmd, enmType, (int32_t)iDisplay);
1325	} while (true);
1326
1327	return rc;
1328	}
1329
1330	/** @todo call this also on reset? */
1331	int vbvaVHWAEnable (PVGASTATE pVGAState, bool bEnable)
1332	{
1333	const VBOXVHWACMD_TYPE enmType = bEnable ? VBOXVHWACMD_TYPE_HH_ENABLE : VBOXVHWACMD_TYPE_HH_DISABLE;
1334	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(enmType, 0, 0);
1335	Assert(pCmd);
1336	if(pCmd)
1337	{
1338	int rc = vbvaVHWAHHPost (pVGAState, pCmd, NULL, NULL, NULL);
1339	vbvaVHWAHHCommandRelease(pCmd);
1340	return rc;
1341	}
1342	return VERR_OUT_OF_RESOURCES;
1343	}
1344
1345	int vboxVBVASaveStatePrep(PPDMDEVINS pDevIns)
1346	{
1347	/* ensure we have no pending commands */
1348	return vbvaVHWAEnable(PDMINS_2_DATA(pDevIns, PVGASTATE), false);
1349	}
1350
1351	int vboxVBVASaveStateDone(PPDMDEVINS pDevIns)
1352	{
1353	/* ensure we have no pending commands */
1354	return vbvaVHWAEnable(PDMINS_2_DATA(pDevIns, PVGASTATE), true);
1355	}
1356
1357	/**
1358	* @interface_method_impl{PDMIDISPLAYVBVACALLBACKS,pfnVHWACommandCompleteAsync}
1359	*/
1360	DECLCALLBACK(int) vbvaVHWACommandCompleteAsync(PPDMIDISPLAYVBVACALLBACKS pInterface, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCmd)
1361	{
1362	PVGASTATE pVGAState = PPDMIDISPLAYVBVACALLBACKS_2_PVGASTATE(pInterface);
1363	int rc;
1364	Log(("VGA Command <<< Async rc %d %#p, %d\n", pCmd->rc, pCmd, pCmd->enmCmd));
1365
1366	if ((uintptr_t)pCmd - (uintptr_t)pVGAState->vram_ptrR3 < pVGAState->vram_size)
1367	{
1368	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
1369	Assert(!(pCmd->Flags & VBOXVHWACMD_FLAG_HH_CMD));
1370	Assert(pCmd->Flags & VBOXVHWACMD_FLAG_HG_ASYNCH);
1371	#ifdef VBOX_WITH_WDDM
1372	if (pVGAState->fGuestCaps & VBVACAPS_COMPLETEGCMD_BY_IOREAD)
1373	{
1374	rc = HGSMICompleteGuestCommand(pIns, pCmd, !!(pCmd->Flags & VBOXVHWACMD_FLAG_GH_ASYNCH_IRQ));
1375	AssertRC(rc);
1376	}
1377	else
1378	#endif
1379	{
1380	VBVAHOSTCMD RT_UNTRUSTED_VOLATILE_GUEST pHostCmd = NULL; / Shut up MSC. */
1381	if (pCmd->Flags & VBOXVHWACMD_FLAG_GH_ASYNCH_EVENT)
1382	{
1383	rc = HGSMIHostCommandAlloc(pIns,
1384	(void RT_UNTRUSTED_VOLATILE_GUEST **)&pHostCmd,
1385	VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDEVENT)),
1386	HGSMI_CH_VBVA,
1387	VBVAHG_EVENT);
1388	AssertRC(rc);
1389	if (RT_SUCCESS(rc))
1390	{
1391	memset((void *)pHostCmd, 0 , VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDEVENT)));
1392	pHostCmd->iDstID = pCmd->iDisplay;
1393	pHostCmd->customOpCode = 0;
1394	VBVAHOSTCMDEVENT RT_UNTRUSTED_VOLATILE_GUEST *pBody = VBVAHOSTCMD_BODY(pHostCmd, VBVAHOSTCMDEVENT);
1395	pBody->pEvent = pCmd->GuestVBVAReserved1;
1396	}
1397	}
1398	else
1399	{
1400	HGSMIOFFSET offCmd = HGSMIPointerToOffsetHost(pIns, pCmd);
1401	Assert(offCmd != HGSMIOFFSET_VOID);
1402	if (offCmd != HGSMIOFFSET_VOID)
1403	{
1404	rc = HGSMIHostCommandAlloc(pIns,
1405	(void RT_UNTRUSTED_VOLATILE_GUEST **)&pHostCmd,
1406	VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDVHWACMDCOMPLETE)),
1407	HGSMI_CH_VBVA,
1408	VBVAHG_DISPLAY_CUSTOM);
1409	AssertRC(rc);
1410	if (RT_SUCCESS(rc))
1411	{
1412	memset((void *)pHostCmd, 0 , VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDVHWACMDCOMPLETE)));
1413	pHostCmd->iDstID = pCmd->iDisplay;
1414	pHostCmd->customOpCode = VBVAHG_DCUSTOM_VHWA_CMDCOMPLETE;
1415	VBVAHOSTCMDVHWACMDCOMPLETE RT_UNTRUSTED_VOLATILE_GUEST *pBody
1416	= VBVAHOSTCMD_BODY(pHostCmd, VBVAHOSTCMDVHWACMDCOMPLETE);
1417	pBody->offCmd = offCmd;
1418	}
1419	}
1420	else
1421	rc = VERR_INVALID_PARAMETER;
1422	}
1423
1424	if (RT_SUCCESS(rc))
1425	{
1426	rc = HGSMIHostCommandSubmitAndFreeAsynch(pIns, pHostCmd, RT_BOOL(pCmd->Flags & VBOXVHWACMD_FLAG_GH_ASYNCH_IRQ));
1427	AssertRC(rc);
1428	if (RT_SUCCESS(rc))
1429	return rc;
1430
1431	HGSMIHostCommandFree (pIns, pHostCmd);
1432	}
1433	}
1434	}
1435	else
1436	{
1437	Assert(pCmd->Flags & VBOXVHWACMD_FLAG_HH_CMD);
1438	PFNVBOXVHWA_HH_CALLBACK pfn = VBOXVHWA_HH_CALLBACK_GET(pCmd);
1439	if (pfn)
1440	pfn(VBOXVHWA_HH_CALLBACK_GET_ARG(pCmd));
1441	rc = VINF_SUCCESS;
1442	}
1443	return rc;
1444	}
1445
1446	typedef struct VBOXVBVASAVEDSTATECBDATA
1447	{
1448	PSSMHANDLE pSSM;
1449	int rc;
1450	bool ab2DOn[VBOX_VIDEO_MAX_SCREENS];
1451	} VBOXVBVASAVEDSTATECBDATA, *PVBOXVBVASAVEDSTATECBDATA;
1452
1453	static DECLCALLBACK(bool) vboxVBVASaveStateBeginPostCb(PVGASTATE pVGAState, VBOXVHWACMD *pCmd, uint32_t iDisplay,
1454	int rc, void *pvContext)
1455	{
1456	RT_NOREF(pVGAState, pCmd);
1457	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1458	if (RT_FAILURE(pData->rc))
1459	return false;
1460	if (RT_FAILURE(rc))
1461	{
1462	pData->rc = rc;
1463	return false;
1464	}
1465
1466	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1467	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1468	{
1469	pData->rc = VERR_INVALID_PARAMETER;
1470	return false;
1471	}
1472
1473	Assert(RT_SUCCESS(pCmd->rc) \|\| pCmd->rc == VERR_NOT_IMPLEMENTED);
1474	if (RT_SUCCESS(pCmd->rc))
1475	{
1476	pData->ab2DOn[iDisplay] = true;
1477	}
1478	else if (pCmd->rc != VERR_NOT_IMPLEMENTED)
1479	{
1480	pData->rc = pCmd->rc;
1481	return false;
1482	}
1483
1484	return true;
1485	}
1486
1487	static DECLCALLBACK(bool)
1488	vboxVBVASaveStatePerformPreCb(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext)
1489	{
1490	RT_NOREF(pVGAState, pCmd);
1491	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1492	if (RT_FAILURE(pData->rc))
1493	return false;
1494
1495	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1496	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1497	{
1498	pData->rc = VERR_INVALID_PARAMETER;
1499	return false;
1500	}
1501
1502	int rc;
1503
1504	if (pData->ab2DOn[iDisplay])
1505	{
1506	rc = SSMR3PutU32 (pData->pSSM, VBOXVBVASAVEDSTATE_VHWAAVAILABLE_MAGIC); AssertRC(rc);
1507	if (RT_FAILURE(rc))
1508	{
1509	pData->rc = rc;
1510	return false;
1511	}
1512	return true;
1513	}
1514
1515	rc = SSMR3PutU32 (pData->pSSM, VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC); AssertRC(rc);
1516	if (RT_FAILURE(rc))
1517	{
1518	pData->rc = rc;
1519	return false;
1520	}
1521
1522	return false;
1523	}
1524
1525	static DECLCALLBACK(bool) vboxVBVASaveStateEndPreCb(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext)
1526	{
1527	RT_NOREF(pVGAState, pCmd);
1528	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1529	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1530	if (pData->ab2DOn[iDisplay])
1531	{
1532	return true;
1533	}
1534
1535	return false;
1536	}
1537
1538	static DECLCALLBACK(bool)
1539	vboxVBVALoadStatePerformPostCb(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, int rc, void pvContext)
1540	{
1541	RT_NOREF(pVGAState, pCmd);
1542	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1543	if (RT_FAILURE(pData->rc))
1544	return false;
1545	if (RT_FAILURE(rc))
1546	{
1547	pData->rc = rc;
1548	return false;
1549	}
1550
1551	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1552	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1553	{
1554	pData->rc = VERR_INVALID_PARAMETER;
1555	return false;
1556	}
1557
1558	Assert(RT_SUCCESS(pCmd->rc) \|\| pCmd->rc == VERR_NOT_IMPLEMENTED);
1559	if (pCmd->rc == VERR_NOT_IMPLEMENTED)
1560	{
1561	pData->rc = SSMR3SkipToEndOfUnit(pData->pSSM);
1562	AssertRC(pData->rc);
1563	return false;
1564	}
1565	if (RT_FAILURE(pCmd->rc))
1566	{
1567	pData->rc = pCmd->rc;
1568	return false;
1569	}
1570
1571	return true;
1572	}
1573
1574	static DECLCALLBACK(bool)
1575	vboxVBVALoadStatePerformPreCb(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext)
1576	{
1577	RT_NOREF(pVGAState, pCmd);
1578	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1579	if (RT_FAILURE(pData->rc))
1580	return false;
1581
1582	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1583	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1584	{
1585	pData->rc = VERR_INVALID_PARAMETER;
1586	return false;
1587	}
1588
1589	int rc;
1590	uint32_t u32;
1591	rc = SSMR3GetU32(pData->pSSM, &u32); AssertRC(rc);
1592	if (RT_FAILURE(rc))
1593	{
1594	pData->rc = rc;
1595	return false;
1596	}
1597
1598	switch (u32)
1599	{
1600	case VBOXVBVASAVEDSTATE_VHWAAVAILABLE_MAGIC:
1601	pData->ab2DOn[iDisplay] = true;
1602	return true;
1603	case VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC:
1604	pData->ab2DOn[iDisplay] = false;
1605	return false;
1606	default:
1607	pData->rc = VERR_INVALID_STATE;
1608	return false;
1609	}
1610	}
1611	#endif /* #ifdef VBOX_WITH_VIDEOHWACCEL */
1612
1613	int vboxVBVASaveDevStateExec (PVGASTATE pVGAState, PSSMHANDLE pSSM)
1614	{
1615	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
1616	int rc = HGSMIHostSaveStateExec (pIns, pSSM);
1617	if (RT_SUCCESS(rc))
1618	{
1619	VGA_SAVED_STATE_PUT_MARKER(pSSM, 2);
1620
1621	/* Save VBVACONTEXT. */
1622	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pIns);
1623
1624	if (!pCtx)
1625	{
1626	AssertFailed();
1627
1628	/* Still write a valid value to the SSM. */
1629	rc = SSMR3PutU32 (pSSM, 0);
1630	AssertRCReturn(rc, rc);
1631	}
1632	else
1633	{
1634	#ifdef DEBUG_sunlover
1635	dumpctx(pCtx);
1636	#endif
1637
1638	rc = SSMR3PutU32 (pSSM, pCtx->cViews);
1639	AssertRCReturn(rc, rc);
1640
1641	uint32_t iView;
1642	for (iView = 0; iView < pCtx->cViews; iView++)
1643	{
1644	VBVAVIEW *pView = &pCtx->aViews[iView];
1645
1646	rc = SSMR3PutU32 (pSSM, pView->view.u32ViewIndex);
1647	AssertRCReturn(rc, rc);
1648	rc = SSMR3PutU32 (pSSM, pView->view.u32ViewOffset);
1649	AssertRCReturn(rc, rc);
1650	rc = SSMR3PutU32 (pSSM, pView->view.u32ViewSize);
1651	AssertRCReturn(rc, rc);
1652	rc = SSMR3PutU32 (pSSM, pView->view.u32MaxScreenSize);
1653	AssertRCReturn(rc, rc);
1654
1655	rc = SSMR3PutU32 (pSSM, pView->screen.u32ViewIndex);
1656	AssertRCReturn(rc, rc);
1657	rc = SSMR3PutS32 (pSSM, pView->screen.i32OriginX);
1658	AssertRCReturn(rc, rc);
1659	rc = SSMR3PutS32 (pSSM, pView->screen.i32OriginY);
1660	AssertRCReturn(rc, rc);
1661	rc = SSMR3PutU32 (pSSM, pView->screen.u32StartOffset);
1662	AssertRCReturn(rc, rc);
1663	rc = SSMR3PutU32 (pSSM, pView->screen.u32LineSize);
1664	AssertRCReturn(rc, rc);
1665	rc = SSMR3PutU32 (pSSM, pView->screen.u32Width);
1666	AssertRCReturn(rc, rc);
1667	rc = SSMR3PutU32 (pSSM, pView->screen.u32Height);
1668	AssertRCReturn(rc, rc);
1669	rc = SSMR3PutU16 (pSSM, pView->screen.u16BitsPerPixel);
1670	AssertRCReturn(rc, rc);
1671	rc = SSMR3PutU16 (pSSM, pView->screen.u16Flags);
1672	AssertRCReturn(rc, rc);
1673
1674	rc = SSMR3PutU32 (pSSM, pView->vbva.guest.pVBVA? pView->vbva.u32VBVAOffset: HGSMIOFFSET_VOID);
1675	AssertRCReturn(rc, rc);
1676
1677	rc = SSMR3PutU32 (pSSM, pView->vbva.partialRecord.cb);
1678	AssertRCReturn(rc, rc);
1679
1680	if (pView->vbva.partialRecord.cb > 0)
1681	{
1682	rc = SSMR3PutMem (pSSM, pView->vbva.partialRecord.pu8, pView->vbva.partialRecord.cb);
1683	AssertRCReturn(rc, rc);
1684	}
1685	}
1686
1687	/* Save mouse pointer shape information. */
1688	rc = SSMR3PutBool (pSSM, pCtx->mouseShapeInfo.fSet);
1689	AssertRCReturn(rc, rc);
1690	rc = SSMR3PutBool (pSSM, pCtx->mouseShapeInfo.fVisible);
1691	AssertRCReturn(rc, rc);
1692	rc = SSMR3PutBool (pSSM, pCtx->mouseShapeInfo.fAlpha);
1693	AssertRCReturn(rc, rc);
1694	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.u32HotX);
1695	AssertRCReturn(rc, rc);
1696	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.u32HotY);
1697	AssertRCReturn(rc, rc);
1698	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.u32Width);
1699	AssertRCReturn(rc, rc);
1700	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.u32Height);
1701	AssertRCReturn(rc, rc);
1702	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.cbShape);
1703	AssertRCReturn(rc, rc);
1704	if (pCtx->mouseShapeInfo.cbShape)
1705	{
1706	rc = SSMR3PutMem (pSSM, pCtx->mouseShapeInfo.pu8Shape, pCtx->mouseShapeInfo.cbShape);
1707	AssertRCReturn(rc, rc);
1708	}
1709
1710	#ifdef VBOX_WITH_WDDM
1711	/* Size of some additional data. For future extensions. */
1712	rc = SSMR3PutU32 (pSSM, 4);
1713	AssertRCReturn(rc, rc);
1714	rc = SSMR3PutU32 (pSSM, pVGAState->fGuestCaps);
1715	AssertRCReturn(rc, rc);
1716	#else
1717	/* Size of some additional data. For future extensions. */
1718	rc = SSMR3PutU32 (pSSM, 0);
1719	AssertRCReturn(rc, rc);
1720	#endif
1721	rc = SSMR3PutU32 (pSSM, RT_ELEMENTS(pCtx->aModeHints));
1722	AssertRCReturn(rc, rc);
1723	rc = SSMR3PutU32 (pSSM, sizeof(VBVAMODEHINT));
1724	AssertRCReturn(rc, rc);
1725	for (unsigned i = 0; i < RT_ELEMENTS(pCtx->aModeHints); ++i)
1726	{
1727	rc = SSMR3PutMem (pSSM, &pCtx->aModeHints[i],
1728	sizeof(VBVAMODEHINT));
1729	AssertRCReturn(rc, rc);
1730	}
1731	}
1732	}
1733
1734	return rc;
1735	}
1736
1737	int vboxVBVASaveStateExec (PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1738	{
1739	PVGASTATE pVGAState = PDMINS_2_DATA(pDevIns, PVGASTATE);
1740	int rc;
1741	#ifdef VBOX_WITH_VIDEOHWACCEL
1742	VBOXVBVASAVEDSTATECBDATA VhwaData = {0};
1743	VhwaData.pSSM = pSSM;
1744	uint32_t cbCmd = sizeof (VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM); /* maximum cmd size */
1745	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN, 0, cbCmd);
1746	Assert(pCmd);
1747	if(pCmd)
1748	{
1749	vbvaVHWAHHPost (pVGAState, pCmd, NULL, vboxVBVASaveStateBeginPostCb, &VhwaData);
1750	rc = VhwaData.rc;
1751	AssertRC(rc);
1752	if (RT_SUCCESS(rc))
1753	{
1754	#endif
1755	rc = vboxVBVASaveDevStateExec (pVGAState, pSSM);
1756	AssertRC(rc);
1757	#ifdef VBOX_WITH_VIDEOHWACCEL
1758	if (RT_SUCCESS(rc))
1759	{
1760	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM, 0);
1761	VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM *pSave = VBOXVHWACMD_BODY_HOST_HEAP(pCmd, VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM);
1762	pSave->pSSM = pSSM;
1763	vbvaVHWAHHPost (pVGAState, pCmd, vboxVBVASaveStatePerformPreCb, NULL, &VhwaData);
1764	rc = VhwaData.rc;
1765	AssertRC(rc);
1766	if (RT_SUCCESS(rc))
1767	{
1768	rc = vbvaVHWACommandSavePending(pVGAState, pSSM);
1769	AssertRCReturn(rc, rc);
1770
1771	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND, 0);
1772	vbvaVHWAHHPost (pVGAState, pCmd, vboxVBVASaveStateEndPreCb, NULL, &VhwaData);
1773	rc = VhwaData.rc;
1774	AssertRC(rc);
1775	}
1776	}
1777	}
1778
1779	vbvaVHWAHHCommandRelease(pCmd);
1780	}
1781	else
1782	rc = VERR_OUT_OF_RESOURCES;
1783	#else
1784	if (RT_SUCCESS(rc))
1785	{
1786	for (uint32_t i = 0; i < pVGAState->cMonitors; ++i)
1787	{
1788	rc = SSMR3PutU32 (pSSM, VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC);
1789	AssertRCReturn(rc, rc);
1790	}
1791	}
1792
1793	/* no pending commands */
1794	SSMR3PutU32(pSSM, 0);
1795	#endif
1796	return rc;
1797	}
1798
1799	int vboxVBVALoadStateExec (PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion)
1800	{
1801	if (uVersion < VGA_SAVEDSTATE_VERSION_HGSMI)
1802	{
1803	/* Nothing was saved. */
1804	return VINF_SUCCESS;
1805	}
1806
1807	PVGASTATE pVGAState = PDMINS_2_DATA(pDevIns, PVGASTATE);
1808	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
1809	int rc = HGSMIHostLoadStateExec (pIns, pSSM, uVersion);
1810	if (RT_SUCCESS(rc))
1811	{
1812	VGA_SAVED_STATE_GET_MARKER_RETURN_ON_MISMATCH(pSSM, uVersion, 2);
1813
1814	/* Load VBVACONTEXT. */
1815	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pIns);
1816
1817	if (!pCtx)
1818	{
1819	/* This should not happen. */
1820	AssertFailed();
1821	rc = VERR_INVALID_PARAMETER;
1822	}
1823	else
1824	{
1825	uint32_t cViews = 0;
1826	rc = SSMR3GetU32 (pSSM, &cViews);
1827	AssertRCReturn(rc, rc);
1828
1829	uint32_t iView;
1830	for (iView = 0; iView < cViews; iView++)
1831	{
1832	VBVAVIEW *pView = &pCtx->aViews[iView];
1833
1834	rc = SSMR3GetU32 (pSSM, &pView->view.u32ViewIndex);
1835	AssertRCReturn(rc, rc);
1836	rc = SSMR3GetU32 (pSSM, &pView->view.u32ViewOffset);
1837	AssertRCReturn(rc, rc);
1838	rc = SSMR3GetU32 (pSSM, &pView->view.u32ViewSize);
1839	AssertRCReturn(rc, rc);
1840	rc = SSMR3GetU32 (pSSM, &pView->view.u32MaxScreenSize);
1841	AssertRCReturn(rc, rc);
1842
1843	rc = SSMR3GetU32 (pSSM, &pView->screen.u32ViewIndex);
1844	AssertRCReturn(rc, rc);
1845	rc = SSMR3GetS32 (pSSM, &pView->screen.i32OriginX);
1846	AssertRCReturn(rc, rc);
1847	rc = SSMR3GetS32 (pSSM, &pView->screen.i32OriginY);
1848	AssertRCReturn(rc, rc);
1849	rc = SSMR3GetU32 (pSSM, &pView->screen.u32StartOffset);
1850	AssertRCReturn(rc, rc);
1851	rc = SSMR3GetU32 (pSSM, &pView->screen.u32LineSize);
1852	AssertRCReturn(rc, rc);
1853	rc = SSMR3GetU32 (pSSM, &pView->screen.u32Width);
1854	AssertRCReturn(rc, rc);
1855	rc = SSMR3GetU32 (pSSM, &pView->screen.u32Height);
1856	AssertRCReturn(rc, rc);
1857	rc = SSMR3GetU16 (pSSM, &pView->screen.u16BitsPerPixel);
1858	AssertRCReturn(rc, rc);
1859	rc = SSMR3GetU16 (pSSM, &pView->screen.u16Flags);
1860	AssertRCReturn(rc, rc);
1861
1862	rc = SSMR3GetU32 (pSSM, &pView->vbva.u32VBVAOffset);
1863	AssertRCReturn(rc, rc);
1864
1865	rc = SSMR3GetU32 (pSSM, &pView->vbva.partialRecord.cb);
1866	AssertRCReturn(rc, rc);
1867
1868	if (pView->vbva.partialRecord.cb == 0)
1869	{
1870	pView->vbva.partialRecord.pu8 = NULL;
1871	}
1872	else
1873	{
1874	Assert(pView->vbva.partialRecord.pu8 == NULL); /* Should be it. */
1875
1876	uint8_t pu8 = (uint8_t )RTMemAlloc(pView->vbva.partialRecord.cb);
1877
1878	if (!pu8)
1879	{
1880	return VERR_NO_MEMORY;
1881	}
1882
1883	pView->vbva.partialRecord.pu8 = pu8;
1884
1885	rc = SSMR3GetMem (pSSM, pView->vbva.partialRecord.pu8, pView->vbva.partialRecord.cb);
1886	AssertRCReturn(rc, rc);
1887	}
1888
1889	if (pView->vbva.u32VBVAOffset == HGSMIOFFSET_VOID)
1890	{
1891	pView->vbva.guest.pVBVA = NULL;
1892	}
1893	else
1894	{
1895	pView->vbva.guest.pVBVA = (VBVABUFFER *)HGSMIOffsetToPointerHost(pIns, pView->vbva.u32VBVAOffset);
1896	}
1897	}
1898
1899	if (uVersion > VGA_SAVEDSTATE_VERSION_WITH_CONFIG)
1900	{
1901	/* Read mouse pointer shape information. */
1902	rc = SSMR3GetBool (pSSM, &pCtx->mouseShapeInfo.fSet);
1903	AssertRCReturn(rc, rc);
1904	rc = SSMR3GetBool (pSSM, &pCtx->mouseShapeInfo.fVisible);
1905	AssertRCReturn(rc, rc);
1906	rc = SSMR3GetBool (pSSM, &pCtx->mouseShapeInfo.fAlpha);
1907	AssertRCReturn(rc, rc);
1908	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.u32HotX);
1909	AssertRCReturn(rc, rc);
1910	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.u32HotY);
1911	AssertRCReturn(rc, rc);
1912	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.u32Width);
1913	AssertRCReturn(rc, rc);
1914	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.u32Height);
1915	AssertRCReturn(rc, rc);
1916	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.cbShape);
1917	AssertRCReturn(rc, rc);
1918	if (pCtx->mouseShapeInfo.cbShape)
1919	{
1920	pCtx->mouseShapeInfo.pu8Shape = (uint8_t *)RTMemAlloc(pCtx->mouseShapeInfo.cbShape);
1921	if (pCtx->mouseShapeInfo.pu8Shape == NULL)
1922	{
1923	return VERR_NO_MEMORY;
1924	}
1925	pCtx->mouseShapeInfo.cbAllocated = pCtx->mouseShapeInfo.cbShape;
1926	rc = SSMR3GetMem (pSSM, pCtx->mouseShapeInfo.pu8Shape, pCtx->mouseShapeInfo.cbShape);
1927	AssertRCReturn(rc, rc);
1928	}
1929	else
1930	{
1931	pCtx->mouseShapeInfo.pu8Shape = NULL;
1932	}
1933
1934	/* Size of some additional data. For future extensions. */
1935	uint32_t cbExtra = 0;
1936	rc = SSMR3GetU32 (pSSM, &cbExtra);
1937	AssertRCReturn(rc, rc);
1938	#ifdef VBOX_WITH_WDDM
1939	if (cbExtra >= 4)
1940	{
1941	rc = SSMR3GetU32 (pSSM, &pVGAState->fGuestCaps);
1942	AssertRCReturn(rc, rc);
1943	pVGAState->pDrv->pfnVBVAGuestCapabilityUpdate(pVGAState->pDrv, pVGAState->fGuestCaps);
1944	cbExtra -= 4;
1945	}
1946	#endif
1947	if (cbExtra > 0)
1948	{
1949	rc = SSMR3Skip(pSSM, cbExtra);
1950	AssertRCReturn(rc, rc);
1951	}
1952
1953	if (uVersion >= VGA_SAVEDSTATE_VERSION_MODE_HINTS)
1954	{
1955	uint32_t cModeHints, cbModeHints;
1956	rc = SSMR3GetU32 (pSSM, &cModeHints);
1957	AssertRCReturn(rc, rc);
1958	rc = SSMR3GetU32 (pSSM, &cbModeHints);
1959	AssertRCReturn(rc, rc);
1960	memset(&pCtx->aModeHints, ~0, sizeof(pCtx->aModeHints));
1961	unsigned iHint;
1962	for (iHint = 0; iHint < cModeHints; ++iHint)
1963	{
1964	if ( cbModeHints <= sizeof(VBVAMODEHINT)
1965	&& iHint < RT_ELEMENTS(pCtx->aModeHints))
1966	rc = SSMR3GetMem(pSSM, &pCtx->aModeHints[iHint],
1967	cbModeHints);
1968	else
1969	rc = SSMR3Skip(pSSM, cbModeHints);
1970	AssertRCReturn(rc, rc);
1971	}
1972	}
1973	}
1974
1975	pCtx->cViews = iView;
1976	LogFlowFunc(("%d views loaded\n", pCtx->cViews));
1977
1978	if (uVersion > VGA_SAVEDSTATE_VERSION_WDDM)
1979	{
1980	bool fLoadCommands;
1981
1982	if (uVersion < VGA_SAVEDSTATE_VERSION_FIXED_PENDVHWA)
1983	{
1984	const char *pcszOsArch = SSMR3HandleHostOSAndArch(pSSM);
1985	Assert(pcszOsArch);
1986	fLoadCommands = !pcszOsArch \|\| RTStrNCmp(pcszOsArch, RT_STR_TUPLE("solaris"));
1987	}
1988	else
1989	fLoadCommands = true;
1990
1991	#ifdef VBOX_WITH_VIDEOHWACCEL
1992	uint32_t cbCmd = sizeof (VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM); /* maximum cmd size */
1993	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM, 0, cbCmd);
1994	Assert(pCmd);
1995	if(pCmd)
1996	{
1997	VBOXVBVASAVEDSTATECBDATA VhwaData = {0};
1998	VhwaData.pSSM = pSSM;
1999	VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM *pLoad = VBOXVHWACMD_BODY_HOST_HEAP(pCmd, VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM);
2000	pLoad->pSSM = pSSM;
2001	vbvaVHWAHHPost (pVGAState, pCmd, vboxVBVALoadStatePerformPreCb, vboxVBVALoadStatePerformPostCb, &VhwaData);
2002	rc = VhwaData.rc;
2003	vbvaVHWAHHCommandRelease(pCmd);
2004	AssertRCReturn(rc, rc);
2005
2006	if (fLoadCommands)
2007	{
2008	rc = vbvaVHWACommandLoadPending(pVGAState, pSSM, uVersion);
2009	AssertRCReturn(rc, rc);
2010	}
2011	}
2012	else
2013	{
2014	rc = VERR_OUT_OF_RESOURCES;
2015	}
2016	#else
2017	uint32_t u32;
2018
2019	for (uint32_t i = 0; i < pVGAState->cMonitors; ++i)
2020	{
2021	rc = SSMR3GetU32(pSSM, &u32);
2022	AssertRCReturn(rc, rc);
2023
2024	if (u32 != VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC)
2025	{
2026	LogRel(("VBVA: 2D data while 2D is not supported\n"));
2027	return VERR_NOT_SUPPORTED;
2028	}
2029	}
2030
2031	if (fLoadCommands)
2032	{
2033	rc = SSMR3GetU32(pSSM, &u32);
2034	AssertRCReturn(rc, rc);
2035
2036	if (u32)
2037	{
2038	LogRel(("VBVA: 2D pending command while 2D is not supported\n"));
2039	return VERR_NOT_SUPPORTED;
2040	}
2041	}
2042	#endif
2043	}
2044
2045	#ifdef DEBUG_sunlover
2046	dumpctx(pCtx);
2047	#endif
2048	}
2049	}
2050
2051	return rc;
2052	}
2053
2054	int vboxVBVALoadStateDone(PPDMDEVINS pDevIns)
2055	{
2056	PVGASTATE pVGAState = PDMINS_2_DATA(pDevIns, PVGASTATE);
2057	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2058	if (pCtx)
2059	{
2060	uint32_t iView;
2061	for (iView = 0; iView < pCtx->cViews; iView++)
2062	{
2063	VBVAVIEW *pView = &pCtx->aViews[iView];
2064	if (pView->vbva.guest.pVBVA)
2065	{
2066	#ifdef VBOX_WITH_CRHGSMI
2067	Assert(!vboxCmdVBVAIsEnabled(pVGAState));
2068	#endif
2069	int rc = vbvaEnable(iView, pVGAState, pCtx, pView->vbva.guest.pVBVA, pView->vbva.u32VBVAOffset, true /* fRestored */);
2070	if (RT_SUCCESS(rc))
2071	vbvaResize(pVGAState, pView, &pView->screen, false);
2072	else
2073	LogRel(("VBVA: can not restore: %Rrc\n", rc));
2074	}
2075	}
2076
2077	if (pCtx->mouseShapeInfo.fSet)
2078	vbvaUpdateMousePointerShape(pVGAState, &pCtx->mouseShapeInfo, true);
2079	}
2080
2081	return VINF_SUCCESS;
2082	}
2083
2084	void VBVARaiseIrq (PVGASTATE pVGAState, uint32_t fFlags)
2085	{
2086	PPDMDEVINS pDevIns = pVGAState->pDevInsR3;
2087
2088	PDMCritSectEnter(&pVGAState->CritSectIRQ, VERR_SEM_BUSY);
2089
2090	const uint32_t fu32CurrentGuestFlags = HGSMIGetHostGuestFlags(pVGAState->pHGSMI);
2091	if ((fu32CurrentGuestFlags & HGSMIHOSTFLAGS_IRQ) == 0)
2092	{
2093	/* No IRQ set yet. */
2094	Assert(pVGAState->fu32PendingGuestFlags == 0);
2095
2096	HGSMISetHostGuestFlags(pVGAState->pHGSMI, HGSMIHOSTFLAGS_IRQ \| fFlags);
2097
2098	/* If VM is not running, the IRQ will be set in VBVAOnResume. */
2099	const VMSTATE enmVMState = PDMDevHlpVMState(pDevIns);
2100	if ( enmVMState == VMSTATE_RUNNING
2101	\|\| enmVMState == VMSTATE_RUNNING_LS)
2102	PDMDevHlpPCISetIrqNoWait(pDevIns, 0, PDM_IRQ_LEVEL_HIGH);
2103	}
2104	else
2105	{
2106	/* IRQ already set, remember the new flags. */
2107	pVGAState->fu32PendingGuestFlags \|= HGSMIHOSTFLAGS_IRQ \| fFlags;
2108	}
2109
2110	PDMCritSectLeave(&pVGAState->CritSectIRQ);
2111	}
2112
2113	void VBVAOnResume(PVGASTATE pThis)
2114	{
2115	PPDMDEVINS pDevIns = pThis->pDevInsR3;
2116
2117	PDMCritSectEnter(&pThis->CritSectIRQ, VERR_SEM_BUSY);
2118
2119	if (HGSMIGetHostGuestFlags(pThis->pHGSMI) & HGSMIHOSTFLAGS_IRQ)
2120	PDMDevHlpPCISetIrqNoWait(pDevIns, 0, PDM_IRQ_LEVEL_HIGH);
2121
2122	PDMCritSectLeave(&pThis->CritSectIRQ);
2123	}
2124
2125	static int vbvaHandleQueryConf32(PVGASTATE pVGAState, VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *pConf32)
2126	{
2127	uint32_t const idxQuery = pConf32->u32Index;
2128	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2129	LogFlowFunc(("VBVA_QUERY_CONF32: u32Index %d, u32Value 0x%x\n", idxQuery, pConf32->u32Value));
2130
2131	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2132	uint32_t uValue;
2133	if (idxQuery == VBOX_VBVA_CONF32_MONITOR_COUNT)
2134	uValue = pCtx->cViews;
2135	else if (idxQuery == VBOX_VBVA_CONF32_HOST_HEAP_SIZE)
2136	uValue = _64K; /** @todo a value calculated from the vram size */
2137	else if ( idxQuery == VBOX_VBVA_CONF32_MODE_HINT_REPORTING
2138	\|\| idxQuery == VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING)
2139	uValue = VINF_SUCCESS;
2140	else if (idxQuery == VBOX_VBVA_CONF32_CURSOR_CAPABILITIES)
2141	uValue = pVGAState->fHostCursorCapabilities;
2142	else if (idxQuery == VBOX_VBVA_CONF32_SCREEN_FLAGS)
2143	uValue = VBVA_SCREEN_F_ACTIVE
2144	\| VBVA_SCREEN_F_DISABLED
2145	\| VBVA_SCREEN_F_BLANK
2146	\| VBVA_SCREEN_F_BLANK2;
2147	else if (idxQuery == VBOX_VBVA_CONF32_MAX_RECORD_SIZE)
2148	uValue = VBVA_MAX_RECORD_SIZE;
2149	else
2150	ASSERT_GUEST_MSG_FAILED_RETURN(("Invalid index %#x\n", idxQuery), VERR_INVALID_PARAMETER);
2151
2152	pConf32->u32Value = uValue;
2153	return VINF_SUCCESS;
2154	}
2155
2156	static int vbvaHandleSetConf32(VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *pConf32)
2157	{
2158	uint32_t const idxQuery = pConf32->u32Index;
2159	uint32_t const uValue = pConf32->u32Value;
2160	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2161	LogFlowFunc(("VBVA_SET_CONF32: u32Index %d, u32Value 0x%x\n", idxQuery, uValue));
2162
2163	if (idxQuery == VBOX_VBVA_CONF32_MONITOR_COUNT)
2164	{ /* do nothing. this is a const. */ }
2165	else if (idxQuery == VBOX_VBVA_CONF32_HOST_HEAP_SIZE)
2166	{ /* do nothing. this is a const. */ }
2167	else
2168	ASSERT_GUEST_MSG_FAILED_RETURN(("Invalid index %#x (value=%u)\n", idxQuery, uValue), VERR_INVALID_PARAMETER);
2169
2170	RT_NOREF_PV(uValue);
2171	return VINF_SUCCESS;
2172	}
2173
2174	static int vbvaHandleInfoHeap(PVGASTATE pVGAState, const VBVAINFOHEAP RT_UNTRUSTED_VOLATILE_GUEST *pInfoHeap)
2175	{
2176	uint32_t const offHeap = pInfoHeap->u32HeapOffset;
2177	uint32_t const cbHeap = pInfoHeap->u32HeapSize;
2178	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2179	LogFlowFunc(("VBVA_INFO_HEAP: offset 0x%x, size 0x%x\n", offHeap, cbHeap));
2180
2181	return HGSMIHostHeapSetup(pVGAState->pHGSMI, offHeap, cbHeap);
2182	}
2183
2184	int VBVAInfoView(PVGASTATE pVGAState, const VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_GUEST *pView)
2185	{
2186	VBVAINFOVIEW view;
2187	RT_COPY_VOLATILE(view, *pView);
2188	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2189
2190	LogFlowFunc(("VBVA_INFO_VIEW: u32ViewIndex %d, u32ViewOffset 0x%x, u32ViewSize 0x%x, u32MaxScreenSize 0x%x\n",
2191	view.u32ViewIndex, view.u32ViewOffset, view.u32ViewSize, view.u32MaxScreenSize));
2192
2193	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2194	ASSERT_GUEST_LOGREL_MSG_RETURN( view.u32ViewIndex < pCtx->cViews
2195	&& view.u32ViewOffset <= pVGAState->vram_size
2196	&& view.u32ViewSize <= pVGAState->vram_size
2197	&& view.u32ViewOffset <= pVGAState->vram_size - view.u32ViewSize
2198	&& view.u32MaxScreenSize <= view.u32ViewSize,
2199	("index %d(%d), offset 0x%x, size 0x%x, max 0x%x, vram size 0x%x\n",
2200	view.u32ViewIndex, pCtx->cViews, view.u32ViewOffset, view.u32ViewSize,
2201	view.u32MaxScreenSize, pVGAState->vram_size),
2202	VERR_INVALID_PARAMETER);
2203	RT_UNTRUSTED_VALIDATED_FENCE();
2204
2205	pCtx->aViews[view.u32ViewIndex].view = view;
2206	return VINF_SUCCESS;
2207	}
2208
2209	int VBVAInfoScreen(PVGASTATE pVGAState, const VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_GUEST *pScreen)
2210	{
2211	/*
2212	* Copy input into non-volatile buffer.
2213	*/
2214	VBVAINFOSCREEN screen;
2215	RT_COPY_VOLATILE(screen, *pScreen);
2216	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2217	LogRel(("VBVA: InfoScreen: [%d] @%d,%d %dx%d, line 0x%x, BPP %d, flags 0x%x\n",
2218	screen.u32ViewIndex, screen.i32OriginX, screen.i32OriginY,
2219	screen.u32Width, screen.u32Height,
2220	screen.u32LineSize, screen.u16BitsPerPixel, screen.u16Flags));
2221
2222	/*
2223	* Validate input.
2224	*/
2225	/* Allow screen.u16BitsPerPixel == 0 because legacy guest code used it for screen blanking. */
2226	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2227	ASSERT_GUEST_LOGREL_MSG_RETURN(screen.u32ViewIndex < pCtx->cViews,
2228	("Screen index %#x is out of bound (cViews=%#x)\n", screen.u32ViewIndex, pCtx->cViews),
2229	VERR_INVALID_PARAMETER);
2230	ASSERT_GUEST_LOGREL_MSG_RETURN( screen.u16BitsPerPixel <= 32
2231	&& screen.u32Width <= UINT16_MAX
2232	&& screen.u32Height <= UINT16_MAX
2233	&& screen.u32LineSize <= UINT16_MAX * UINT32_C(4),
2234	("One or more values out of range: u16BitsPerPixel=%#x u32Width=%#x u32Height=%#x u32LineSize=%#x\n",
2235	screen.u16BitsPerPixel, screen.u32Width, screen.u32Height, screen.u32LineSize),
2236	VERR_INVALID_PARAMETER);
2237	RT_UNTRUSTED_VALIDATED_FENCE();
2238
2239	const VBVAINFOVIEW *pView = &pCtx->aViews[screen.u32ViewIndex].view;
2240	const uint32_t cbPerPixel = (screen.u16BitsPerPixel + 7) / 8;
2241	ASSERT_GUEST_LOGREL_MSG_RETURN(screen.u32Width <= screen.u32LineSize / (cbPerPixel ? cbPerPixel : 1),
2242	("u32Width=%#x u32LineSize=%3x cbPerPixel=%#x\n",
2243	screen.u32Width, screen.u32LineSize, cbPerPixel),
2244	VERR_INVALID_PARAMETER);
2245
2246	const uint64_t u64ScreenSize = (uint64_t)screen.u32LineSize * screen.u32Height;
2247
2248	ASSERT_GUEST_LOGREL_MSG_RETURN( screen.u32StartOffset <= pView->u32ViewSize
2249	&& u64ScreenSize <= pView->u32MaxScreenSize
2250	&& screen.u32StartOffset <= pView->u32ViewSize - (uint32_t)u64ScreenSize,
2251	("u32StartOffset=%#x u32ViewSize=%#x u64ScreenSize=%#RX64 u32MaxScreenSize=%#x\n",
2252	screen.u32StartOffset, pView->u32ViewSize, u64ScreenSize, pView->u32MaxScreenSize),
2253	VERR_INVALID_PARAMETER);
2254	RT_UNTRUSTED_VALIDATED_FENCE();
2255
2256	/*
2257	* Do the job.
2258	*/
2259	vbvaResize(pVGAState, &pCtx->aViews[screen.u32ViewIndex], &screen, true);
2260	return VINF_SUCCESS;
2261	}
2262
2263	int VBVAGetInfoViewAndScreen(PVGASTATE pVGAState, uint32_t u32ViewIndex, VBVAINFOVIEW pView, VBVAINFOSCREEN pScreen)
2264	{
2265	if (u32ViewIndex >= pVGAState->cMonitors)
2266	return VERR_INVALID_PARAMETER;
2267
2268	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
2269	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pIns);
2270
2271	if (pView)
2272	*pView = pCtx->aViews[u32ViewIndex].view;
2273
2274	if (pScreen)
2275	*pScreen = pCtx->aViews[u32ViewIndex].screen;
2276
2277	return VINF_SUCCESS;
2278	}
2279
2280	static int vbvaHandleEnable(PVGASTATE pVGAState, uint32_t fEnableFlags, uint32_t offEnable, uint32_t idScreen)
2281	{
2282	LogFlowFunc(("VBVA_ENABLE[%u]: fEnableFlags=0x%x offEnable=%#x\n", idScreen, fEnableFlags, offEnable));
2283	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
2284	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pIns);
2285
2286	/*
2287	* Validate input.
2288	*/
2289	ASSERT_GUEST_LOGREL_MSG_RETURN(idScreen < pCtx->cViews, ("idScreen=%#x cViews=%#x\n", idScreen, pCtx->cViews), VERR_INVALID_PARAMETER);
2290	ASSERT_GUEST_LOGREL_MSG_RETURN( (fEnableFlags & (VBVA_F_ENABLE \| VBVA_F_DISABLE)) == VBVA_F_ENABLE
2291	\|\| (fEnableFlags & (VBVA_F_ENABLE \| VBVA_F_DISABLE)) == VBVA_F_DISABLE,
2292	("fEnableFlags=%#x\n", fEnableFlags),
2293	VERR_INVALID_PARAMETER);
2294	if (fEnableFlags & VBVA_F_ENABLE)
2295	{
2296	ASSERT_GUEST_LOGREL_MSG_RETURN(offEnable < pVGAState->vram_size,
2297	("offEnable=%#x vram_size=%#x\n", offEnable, pVGAState->vram_size),
2298	VERR_INVALID_PARAMETER);
2299	if (fEnableFlags & VBVA_F_ABSOFFSET)
2300	/* Offset from VRAM start. */
2301	ASSERT_GUEST_LOGREL_MSG_RETURN( pVGAState->vram_size >= RT_UOFFSETOF(VBVABUFFER, au8Data)
2302	&& offEnable <= pVGAState->vram_size - RT_UOFFSETOF(VBVABUFFER, au8Data),
2303	("offEnable=%#x vram_size=%#x\n", offEnable, pVGAState->vram_size),
2304	VERR_INVALID_PARAMETER);
2305	else
2306	{
2307	/* Offset from the view start. We'd be using idScreen here to fence required. */
2308	RT_UNTRUSTED_VALIDATED_FENCE();
2309	const VBVAINFOVIEW *pView = &pCtx->aViews[idScreen].view;
2310	ASSERT_GUEST_LOGREL_MSG_RETURN( pVGAState->vram_size - offEnable >= pView->u32ViewOffset
2311	&& pView->u32ViewSize >= RT_UOFFSETOF(VBVABUFFER, au8Data)
2312	&& offEnable <= pView->u32ViewSize - RT_UOFFSETOF(VBVABUFFER, au8Data),
2313	("offEnable=%#x vram_size=%#x view: %#x LB %#x\n",
2314	offEnable, pVGAState->vram_size, pView->u32ViewOffset, pView->u32ViewSize),
2315	VERR_INVALID_PARAMETER);
2316	offEnable += pView->u32ViewOffset;
2317	}
2318	ASSERT_GUEST_LOGREL_MSG_RETURN(HGSMIIsOffsetValid(pIns, offEnable),
2319	("offEnable=%#x area %#x LB %#x\n",
2320	offEnable, HGSMIGetAreaOffset(pIns), HGSMIGetAreaSize(pIns)),
2321	VERR_INVALID_PARAMETER);
2322	}
2323	RT_UNTRUSTED_VALIDATED_FENCE();
2324
2325	/*
2326	* Execute.
2327	*/
2328	int rc = VINF_SUCCESS;
2329	if (fEnableFlags & VBVA_F_ENABLE)
2330	{
2331	VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST *pVBVA
2332	= (VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST *)HGSMIOffsetToPointerHost(pIns, offEnable);
2333	ASSERT_GUEST_LOGREL_RETURN(pVBVA, VERR_INVALID_PARAMETER); /* already check above, but let's be careful. */
2334
2335	/* Process any pending orders and empty the VBVA ring buffer. */
2336	vbvaFlush(pVGAState, pCtx);
2337
2338	rc = vbvaEnable(idScreen, pVGAState, pCtx, pVBVA, offEnable, false /* fRestored */);
2339	if (RT_FAILURE(rc))
2340	LogRelMax(8, ("VBVA: can not enable: %Rrc\n", rc));
2341	}
2342	else
2343	rc = vbvaDisable(idScreen, pVGAState, pCtx);
2344	return rc;
2345	}
2346
2347	static int vbvaHandleQueryModeHints(PVGASTATE pVGAState, VBVAQUERYMODEHINTS volatile *pQueryModeHints, HGSMISIZE cbBuffer)
2348	{
2349	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
2350	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pIns);
2351
2352	/*
2353	* Copy and validate the request.
2354	*/
2355	uint16_t const cHintsQueried = pQueryModeHints->cHintsQueried;
2356	uint16_t const cbHintStructureGuest = pQueryModeHints->cbHintStructureGuest;
2357	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2358
2359	LogRelFlowFunc(("VBVA: HandleQueryModeHints: cHintsQueried=%RU16, cbHintStructureGuest=%RU16\n",
2360	cHintsQueried, cbHintStructureGuest));
2361	ASSERT_GUEST_RETURN(cbBuffer >= sizeof(VBVAQUERYMODEHINTS) + (uint32_t)cHintsQueried * cbHintStructureGuest,
2362	VERR_INVALID_PARAMETER);
2363	RT_UNTRUSTED_VALIDATED_FENCE();
2364
2365	/*
2366	* Produce the requested data.
2367	*/
2368	uint8_t pbHint = (uint8_t )(pQueryModeHints + 1);
2369	memset(pbHint, ~0, cbBuffer - sizeof(VBVAQUERYMODEHINTS));
2370
2371	for (unsigned iHint = 0; iHint < cHintsQueried && iHint < VBOX_VIDEO_MAX_SCREENS; ++iHint)
2372	{
2373	memcpy(pbHint, &pCtx->aModeHints[iHint], RT_MIN(cbHintStructureGuest, sizeof(VBVAMODEHINT)));
2374	pbHint += cbHintStructureGuest;
2375	Assert((uintptr_t)(pbHint - (uint8_t *)pQueryModeHints) <= cbBuffer);
2376	}
2377
2378	return VINF_SUCCESS;
2379	}
2380
2381	/*
2382	*
2383	* New VBVA uses a new interface id: #define VBE_DISPI_ID_VBOX_VIDEO 0xBE01
2384	*
2385	* VBVA uses two 32 bits IO ports to write VRAM offsets of shared memory blocks for commands.
2386	* Read Write
2387	* Host port 0x3b0 to process completed
2388	* Guest port 0x3d0 control value? to process
2389	*
2390	*/
2391
2392	static DECLCALLBACK(void) vbvaNotifyGuest (void *pvCallback)
2393	{
2394	#if defined(VBOX_WITH_HGSMI) && (defined(VBOX_WITH_VIDEOHWACCEL) \|\| defined(VBOX_WITH_VDMA) \|\| defined(VBOX_WITH_WDDM))
2395	PVGASTATE pVGAState = (PVGASTATE)pvCallback;
2396	VBVARaiseIrq (pVGAState, 0);
2397	#else
2398	NOREF(pvCallback);
2399	/* Do nothing. Later the VMMDev/VGA IRQ can be used for the notification. */
2400	#endif
2401	}
2402
2403	/**
2404	* The guest submitted a command buffer (hit VGA_PORT_HGSMI_GUEST).
2405	*
2406	* Verify the buffer size and invoke corresponding handler.
2407	*
2408	* @return VBox status code.
2409	* @param pvHandler The VBVA channel context.
2410	* @param u16ChannelInfo Command code.
2411	* @param pvBuffer HGSMI buffer with command data. Considered volatile!
2412	* @param cbBuffer Size of command data.
2413	*
2414	* @thread EMT
2415	*/
2416	static DECLCALLBACK(int) vbvaChannelHandler(void *pvHandler, uint16_t u16ChannelInfo,
2417	void RT_UNTRUSTED_VOLATILE_GUEST *pvBuffer, HGSMISIZE cbBuffer)
2418	{
2419	int rc = VINF_SUCCESS;
2420
2421	LogFlowFunc(("pvHandler %p, u16ChannelInfo %d, pvBuffer %p, cbBuffer %u\n", pvHandler, u16ChannelInfo, pvBuffer, cbBuffer));
2422
2423	PVGASTATE pVGAState = (PVGASTATE)pvHandler;
2424	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
2425	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pIns);
2426
2427	switch (u16ChannelInfo)
2428	{
2429	#ifdef VBOX_WITH_CRHGSMI
2430	case VBVA_CMDVBVA_SUBMIT:
2431	rc = vboxCmdVBVACmdSubmit(pVGAState);
2432	break;
2433
2434	case VBVA_CMDVBVA_FLUSH:
2435	rc = vboxCmdVBVACmdFlush(pVGAState);
2436	break;
2437
2438	case VBVA_CMDVBVA_CTL:
2439	if (cbBuffer >= VBoxSHGSMIBufferHeaderSize() + sizeof(VBOXCMDVBVA_CTL))
2440	{
2441	VBOXCMDVBVA_CTL RT_UNTRUSTED_VOLATILE_GUEST *pCtl
2442	= (VBOXCMDVBVA_CTL RT_UNTRUSTED_VOLATILE_GUEST )VBoxSHGSMIBufferData((VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer);
2443	rc = vboxCmdVBVACmdCtl(pVGAState, pCtl, cbBuffer - VBoxSHGSMIBufferHeaderSize());
2444	}
2445	else
2446	rc = VERR_INVALID_PARAMETER;
2447	break;
2448	#endif /* VBOX_WITH_CRHGSMI */
2449
2450	#ifdef VBOX_WITH_VDMA
2451	case VBVA_VDMA_CMD:
2452	if (cbBuffer >= VBoxSHGSMIBufferHeaderSize() + sizeof(VBOXVDMACBUF_DR))
2453	{
2454	VBOXVDMACBUF_DR RT_UNTRUSTED_VOLATILE_GUEST *pCmd
2455	= (VBOXVDMACBUF_DR RT_UNTRUSTED_VOLATILE_GUEST )VBoxSHGSMIBufferData((VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer);
2456	vboxVDMACommand(pVGAState->pVdma, pCmd, cbBuffer - VBoxSHGSMIBufferHeaderSize());
2457	rc = VINF_SUCCESS;
2458	}
2459	else
2460	rc = VERR_INVALID_PARAMETER;
2461	break;
2462
2463	case VBVA_VDMA_CTL:
2464	if (cbBuffer >= VBoxSHGSMIBufferHeaderSize() + sizeof(VBOXVDMA_CTL))
2465	{
2466	VBOXVDMA_CTL RT_UNTRUSTED_VOLATILE_GUEST *pCmd
2467	= (VBOXVDMA_CTL RT_UNTRUSTED_VOLATILE_GUEST )VBoxSHGSMIBufferData((VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer);
2468	vboxVDMAControl(pVGAState->pVdma, pCmd, cbBuffer - VBoxSHGSMIBufferHeaderSize());
2469	}
2470	else
2471	rc = VERR_INVALID_PARAMETER;
2472	break;
2473	#endif /* VBOX_WITH_VDMA */
2474
2475	case VBVA_QUERY_CONF32:
2476	if (cbBuffer >= sizeof(VBVACONF32))
2477	rc = vbvaHandleQueryConf32(pVGAState, (VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2478	else
2479	rc = VERR_INVALID_PARAMETER;
2480	break;
2481
2482	case VBVA_SET_CONF32:
2483	if (cbBuffer >= sizeof(VBVACONF32))
2484	rc = vbvaHandleSetConf32((VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2485	else
2486	rc = VERR_INVALID_PARAMETER;
2487	break;
2488
2489	case VBVA_INFO_VIEW:
2490	/* Expect at least one VBVAINFOVIEW structure. */
2491	rc = VERR_INVALID_PARAMETER;
2492	if (cbBuffer >= sizeof(VBVAINFOVIEW))
2493	{
2494	#ifdef VBOX_WITH_CRHGSMI
2495	AssertMsgBreak(!vboxCmdVBVAIsEnabled(pVGAState), ("VBVA_INFO_VIEW is not acceptible for CmdVbva\n"));
2496	#endif
2497	/* Guest submits an array of VBVAINFOVIEW structures. */
2498	const VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_GUEST pView = (VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2499	for (;
2500	cbBuffer >= sizeof(VBVAINFOVIEW);
2501	++pView, cbBuffer -= sizeof(VBVAINFOVIEW))
2502	{
2503	rc = VBVAInfoView(pVGAState, pView);
2504	if (RT_FAILURE(rc))
2505	break;
2506	}
2507	}
2508	break;
2509
2510	case VBVA_INFO_HEAP:
2511	if (cbBuffer >= sizeof(VBVAINFOHEAP))
2512	rc = vbvaHandleInfoHeap(pVGAState, (VBVAINFOHEAP RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2513	else
2514	rc = VERR_INVALID_PARAMETER;
2515	break;
2516
2517	case VBVA_FLUSH:
2518	if (cbBuffer >= sizeof(VBVAFLUSH))
2519	rc = vbvaFlush(pVGAState, pCtx);
2520	else
2521	rc = VERR_INVALID_PARAMETER;
2522	break;
2523
2524	case VBVA_INFO_SCREEN:
2525	rc = VERR_INVALID_PARAMETER;
2526	#ifdef VBOX_WITH_CRHGSMI
2527	AssertMsgBreak(!vboxCmdVBVAIsEnabled(pVGAState), ("VBVA_INFO_SCREEN is not acceptible for CmdVbva\n"));
2528	#endif
2529	if (cbBuffer >= sizeof(VBVAINFOSCREEN))
2530	rc = VBVAInfoScreen(pVGAState, (VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2531	break;
2532
2533	case VBVA_ENABLE:
2534	rc = VERR_INVALID_PARAMETER;
2535	#ifdef VBOX_WITH_CRHGSMI
2536	AssertMsgBreak(!vboxCmdVBVAIsEnabled(pVGAState), ("VBVA_ENABLE is not acceptible for CmdVbva\n"));
2537	#endif /* VBOX_WITH_CRHGSMI */
2538	if (cbBuffer >= sizeof(VBVAENABLE))
2539	{
2540	VBVAENABLE RT_UNTRUSTED_VOLATILE_GUEST pVbvaEnable = (VBVAENABLE RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2541	uint32_t const fEnableFlags = pVbvaEnable->u32Flags;
2542	uint32_t const offEnable = pVbvaEnable->u32Offset;
2543	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2544
2545	uint32_t idScreen;
2546	if (fEnableFlags & VBVA_F_EXTENDED)
2547	{
2548	ASSERT_GUEST_STMT_BREAK(cbBuffer >= sizeof(VBVAENABLE_EX), rc = VERR_INVALID_PARAMETER);
2549	idScreen = ((VBVAENABLE_EX RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer)->u32ScreenId;
2550	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2551	}
2552	else
2553	idScreen = vbvaViewFromBufferPtr(pIns, pCtx, pvBuffer);
2554
2555	rc = vbvaHandleEnable(pVGAState, fEnableFlags, offEnable, idScreen);
2556	pVbvaEnable->i32Result = rc;
2557	}
2558	break;
2559
2560	case VBVA_MOUSE_POINTER_SHAPE:
2561	if (cbBuffer >= sizeof(VBVAMOUSEPOINTERSHAPE))
2562	{
2563	VBVAMOUSEPOINTERSHAPE RT_UNTRUSTED_VOLATILE_GUEST *pShape
2564	= (VBVAMOUSEPOINTERSHAPE RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer;
2565	rc = vbvaMousePointerShape(pVGAState, pCtx, pShape, cbBuffer);
2566	pShape->i32Result = rc;
2567	}
2568	else
2569	rc = VERR_INVALID_PARAMETER;
2570	break;
2571
2572
2573	#ifdef VBOX_WITH_VIDEOHWACCEL
2574	case VBVA_VHWA_CMD:
2575	if (cbBuffer >= VBOXVHWACMD_HEADSIZE())
2576	{
2577	vbvaVHWAHandleCommand(pVGAState, (VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2578	rc = VINF_SUCCESS;
2579	}
2580	else
2581	rc = VERR_INVALID_PARAMETER;
2582	break;
2583	#endif
2584
2585	#ifdef VBOX_WITH_WDDM
2586	case VBVA_INFO_CAPS:
2587	if (cbBuffer >= sizeof(VBVACAPS))
2588	{
2589	VBVACAPS RT_UNTRUSTED_VOLATILE_GUEST pCaps = (VBVACAPS RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2590	pVGAState->fGuestCaps = pCaps->fCaps;
2591	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2592
2593	pVGAState->pDrv->pfnVBVAGuestCapabilityUpdate(pVGAState->pDrv, pVGAState->fGuestCaps);
2594	pCaps->rc = rc = VINF_SUCCESS;
2595	}
2596	else
2597	rc = VERR_INVALID_PARAMETER;
2598	break;
2599	#endif
2600
2601	case VBVA_SCANLINE_CFG:
2602	if (cbBuffer >= sizeof(VBVASCANLINECFG))
2603	{
2604	VBVASCANLINECFG RT_UNTRUSTED_VOLATILE_GUEST pCfg = (VBVASCANLINECFG RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2605	pVGAState->fScanLineCfg = pCfg->fFlags;
2606	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2607
2608	pCfg->rc = rc = VINF_SUCCESS;
2609	}
2610	else
2611	rc = VERR_INVALID_PARAMETER;
2612	break;
2613
2614	case VBVA_QUERY_MODE_HINTS:
2615	if (cbBuffer >= sizeof(VBVAQUERYMODEHINTS))
2616	{
2617	VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_GUEST *pQueryModeHints
2618	= (VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer;
2619	rc = vbvaHandleQueryModeHints(pVGAState, pQueryModeHints, cbBuffer);
2620	pQueryModeHints->rc = rc;
2621	}
2622	else
2623	rc = VERR_INVALID_PARAMETER;
2624	break;
2625
2626	case VBVA_REPORT_INPUT_MAPPING:
2627	if (cbBuffer >= sizeof(VBVAREPORTINPUTMAPPING))
2628	{
2629	VBVAREPORTINPUTMAPPING inputMapping;
2630	{
2631	VBVAREPORTINPUTMAPPING RT_UNTRUSTED_VOLATILE_GUEST *pInputMapping
2632	= (VBVAREPORTINPUTMAPPING RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer;
2633	inputMapping.x = pInputMapping->x;
2634	inputMapping.y = pInputMapping->y;
2635	inputMapping.cx = pInputMapping->cx;
2636	inputMapping.cy = pInputMapping->cy;
2637	}
2638	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2639
2640	LogRelFlowFunc(("VBVA: ChannelHandler: VBVA_REPORT_INPUT_MAPPING: x=%RI32, y=%RI32, cx=%RU32, cy=%RU32\n",
2641	inputMapping.x, inputMapping.y, inputMapping.cx, inputMapping.cy));
2642	pVGAState->pDrv->pfnVBVAInputMappingUpdate(pVGAState->pDrv,
2643	inputMapping.x, inputMapping.y,
2644	inputMapping.cx, inputMapping.cy);
2645	rc = VINF_SUCCESS;
2646	}
2647	else
2648	rc = VERR_INVALID_PARAMETER;
2649	break;
2650
2651	case VBVA_CURSOR_POSITION:
2652	if (cbBuffer >= sizeof(VBVACURSORPOSITION))
2653	{
2654	VBVACURSORPOSITION RT_UNTRUSTED_VOLATILE_GUEST pReport = (VBVACURSORPOSITION RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2655	VBVACURSORPOSITION Report;
2656	Report.fReportPosition = pReport->fReportPosition;
2657	Report.x = pReport->x;
2658	Report.y = pReport->y;
2659	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2660
2661	LogRelFlowFunc(("VBVA: ChannelHandler: VBVA_CURSOR_POSITION: fReportPosition=%RTbool, x=%RU32, y=%RU32\n",
2662	RT_BOOL(Report.fReportPosition), Report.x, Report.y));
2663
2664	pVGAState->pDrv->pfnVBVAReportCursorPosition(pVGAState->pDrv, RT_BOOL(Report.fReportPosition), Report.x, Report.y);
2665	pReport->x = pCtx->xCursor;
2666	pReport->y = pCtx->yCursor;
2667	rc = VINF_SUCCESS;
2668	}
2669	else
2670	rc = VERR_INVALID_PARAMETER;
2671	break;
2672
2673	default:
2674	Log(("Unsupported VBVA guest command %d (%#x)!!!\n", u16ChannelInfo, u16ChannelInfo));
2675	break;
2676	}
2677
2678	return rc;
2679	}
2680
2681	/* When VBVA is paused, then VGA device is allowed to work but
2682	* no HGSMI etc state is changed.
2683	*/
2684	void VBVAPause(PVGASTATE pVGAState, bool fPause)
2685	{
2686	if (!pVGAState \|\| !pVGAState->pHGSMI)
2687	{
2688	return;
2689	}
2690
2691	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2692
2693	if (pCtx)
2694	{
2695	pCtx->fPaused = fPause;
2696	}
2697	}
2698
2699	bool VBVAIsPaused(PVGASTATE pVGAState)
2700	{
2701	if (pVGAState && pVGAState->pHGSMI)
2702	{
2703	const VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2704	if (pCtx && pCtx->cViews)
2705	{
2706	/* If VBVA is enabled at all. */
2707	const VBVAVIEW *pView = &pCtx->aViews[0];
2708	if (pView->vbva.guest.pVBVA)
2709	return pCtx->fPaused;
2710	}
2711	}
2712	/* VBVA is disabled. */
2713	return true;
2714	}
2715
2716	void VBVAOnVBEChanged(PVGASTATE pVGAState)
2717	{
2718	/* The guest does not depend on host handling the VBE registers. */
2719	if (pVGAState->fGuestCaps & VBVACAPS_USE_VBVA_ONLY)
2720	{
2721	return;
2722	}
2723
2724	VBVAPause(pVGAState, (pVGAState->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) == 0);
2725	}
2726
2727	void VBVAReset (PVGASTATE pVGAState)
2728	{
2729	if (!pVGAState \|\| !pVGAState->pHGSMI)
2730	{
2731	return;
2732	}
2733
2734	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pVGAState->pHGSMI);
2735
2736	#ifdef VBOX_WITH_VIDEOHWACCEL
2737	vbvaVHWAReset (pVGAState);
2738	#endif
2739
2740	HGSMIReset(pVGAState->pHGSMI);
2741	/* Make sure the IRQ is reset. */
2742	PDMDevHlpPCISetIrq(pVGAState->pDevInsR3, 0, PDM_IRQ_LEVEL_LOW);
2743	pVGAState->fu32PendingGuestFlags = 0;
2744
2745	if (pCtx)
2746	{
2747	vbvaFlush (pVGAState, pCtx);
2748
2749	unsigned uScreenId;
2750
2751	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
2752	{
2753	vbvaDisable (uScreenId, pVGAState, pCtx);
2754	}
2755
2756	pCtx->mouseShapeInfo.fSet = false;
2757	RTMemFree(pCtx->mouseShapeInfo.pu8Shape);
2758	pCtx->mouseShapeInfo.pu8Shape = NULL;
2759	pCtx->mouseShapeInfo.cbAllocated = 0;
2760	pCtx->mouseShapeInfo.cbShape = 0;
2761	}
2762
2763	}
2764
2765	int VBVAUpdateDisplay (PVGASTATE pVGAState)
2766	{
2767	int rc = VERR_NOT_SUPPORTED; /* Assuming that the VGA device will have to do updates. */
2768
2769	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pVGAState->pHGSMI);
2770
2771	if (pCtx)
2772	{
2773	if (!pCtx->fPaused)
2774	{
2775	rc = vbvaFlush (pVGAState, pCtx);
2776
2777	if (RT_SUCCESS (rc))
2778	{
2779	if (!pCtx->aViews[0].vbva.guest.pVBVA)
2780	{
2781	/* VBVA is not enabled for the first view, so VGA device must do updates. */
2782	rc = VERR_NOT_SUPPORTED;
2783	}
2784	}
2785	}
2786	}
2787
2788	return rc;
2789	}
2790
2791	static int vbvaSendModeHintWorker(PVGASTATE pThis, uint32_t cx, uint32_t cy,
2792	uint32_t cBPP, uint32_t iDisplay, uint32_t dx,
2793	uint32_t dy, uint32_t fEnabled,
2794	uint32_t fNotifyGuest)
2795	{
2796	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThis->pHGSMI);
2797	/** @note See Display::setVideoModeHint: "It is up to the guest to decide
2798	* whether the hint is valid. Therefore don't do any VRAM sanity checks
2799	* here! */
2800	if (iDisplay >= RT_MIN(pThis->cMonitors, RT_ELEMENTS(pCtx->aModeHints)))
2801	return VERR_OUT_OF_RANGE;
2802	pCtx->aModeHints[iDisplay].magic = VBVAMODEHINT_MAGIC;
2803	pCtx->aModeHints[iDisplay].cx = cx;
2804	pCtx->aModeHints[iDisplay].cy = cy;
2805	pCtx->aModeHints[iDisplay].cBPP = cBPP;
2806	pCtx->aModeHints[iDisplay].dx = dx;
2807	pCtx->aModeHints[iDisplay].dy = dy;
2808	pCtx->aModeHints[iDisplay].fEnabled = fEnabled;
2809	if (fNotifyGuest && pThis->fGuestCaps & VBVACAPS_IRQ && pThis->fGuestCaps & VBVACAPS_VIDEO_MODE_HINTS)
2810	VBVARaiseIrq(pThis, HGSMIHOSTFLAGS_HOTPLUG);
2811	return VINF_SUCCESS;
2812	}
2813
2814	/** Converts a display port interface pointer to a vga state pointer. */
2815	#define IDISPLAYPORT_2_VGASTATE(pInterface) ( (PVGASTATE)((uintptr_t)pInterface - RT_OFFSETOF(VGASTATE, IPort)) )
2816
2817	DECLCALLBACK(int) vbvaPortSendModeHint(PPDMIDISPLAYPORT pInterface, uint32_t cx,
2818	uint32_t cy, uint32_t cBPP,
2819	uint32_t iDisplay, uint32_t dx,
2820	uint32_t dy, uint32_t fEnabled,
2821	uint32_t fNotifyGuest)
2822	{
2823	PVGASTATE pThis;
2824	int rc;
2825
2826	pThis = IDISPLAYPORT_2_VGASTATE(pInterface);
2827	rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
2828	AssertRC(rc);
2829	rc = vbvaSendModeHintWorker(pThis, cx, cy, cBPP, iDisplay, dx, dy, fEnabled,
2830	fNotifyGuest);
2831	PDMCritSectLeave(&pThis->CritSect);
2832	return rc;
2833	}
2834
2835	DECLCALLBACK(void) vbvaPortReportHostCursorCapabilities(PPDMIDISPLAYPORT pInterface, uint32_t fCapabilitiesAdded,
2836	uint32_t fCapabilitiesRemoved)
2837	{
2838	PVGASTATE pThis = IDISPLAYPORT_2_VGASTATE(pInterface);
2839	int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
2840	AssertRC(rc);
2841	pThis->fHostCursorCapabilities \|= fCapabilitiesAdded;
2842	pThis->fHostCursorCapabilities &= ~fCapabilitiesRemoved;
2843	if (pThis->fGuestCaps & VBVACAPS_IRQ && pThis->fGuestCaps & VBVACAPS_DISABLE_CURSOR_INTEGRATION)
2844	VBVARaiseIrq(pThis, HGSMIHOSTFLAGS_CURSOR_CAPABILITIES);
2845	PDMCritSectLeave(&pThis->CritSect);
2846	}
2847
2848	DECLCALLBACK(void) vbvaPortReportHostCursorPosition(PPDMIDISPLAYPORT pInterface, uint32_t x, uint32_t y)
2849	{
2850	PVGASTATE pThis = IDISPLAYPORT_2_VGASTATE(pInterface);
2851	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThis->pHGSMI);
2852	int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
2853	AssertRC(rc);
2854	pCtx->xCursor = x;
2855	pCtx->yCursor = y;
2856	PDMCritSectLeave(&pThis->CritSect);
2857	}
2858
2859	int VBVAInit(PVGASTATE pVGAState)
2860	{
2861	PPDMDEVINS pDevIns = pVGAState->pDevInsR3;
2862
2863	PVM pVM = PDMDevHlpGetVM(pDevIns);
2864
2865	int rc = HGSMICreate(&pVGAState->pHGSMI,
2866	pVM,
2867	"VBVA",
2868	0,
2869	pVGAState->vram_ptrR3,
2870	pVGAState->vram_size,
2871	vbvaNotifyGuest,
2872	pVGAState,
2873	sizeof(VBVACONTEXT));
2874	if (RT_SUCCESS(rc))
2875	{
2876	rc = HGSMIHostChannelRegister(pVGAState->pHGSMI,
2877	HGSMI_CH_VBVA,
2878	vbvaChannelHandler,
2879	pVGAState);
2880	if (RT_SUCCESS(rc))
2881	{
2882	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2883	pCtx->cViews = pVGAState->cMonitors;
2884	pCtx->fPaused = true;
2885	memset(pCtx->aModeHints, ~0, sizeof(pCtx->aModeHints));
2886	pVGAState->fHostCursorCapabilities = 0;
2887	}
2888	}
2889
2890	return rc;
2891
2892	}
2893
2894	void VBVADestroy(PVGASTATE pVGAState)
2895	{
2896	PHGSMIINSTANCE pHgsmi = pVGAState->pHGSMI;
2897	if (pHgsmi)
2898	{
2899	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pHgsmi);
2900	pCtx->mouseShapeInfo.fSet = false;
2901	RTMemFree(pCtx->mouseShapeInfo.pu8Shape);
2902	pCtx->mouseShapeInfo.pu8Shape = NULL;
2903	pCtx->mouseShapeInfo.cbAllocated = 0;
2904	pCtx->mouseShapeInfo.cbShape = 0;
2905
2906	HGSMIDestroy(pHgsmi);
2907	pVGAState->pHGSMI = NULL;
2908	}
2909	}
2910

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA_VBVA.cpp@ 71626

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