DevVGA_VBVA.cpp@ 75401

Last change on this file since 75401 was 72060, checked in by vboxsync, 7 years ago
DevVGA_VBVA: pedantic fix (uint32_t(~0)) isn't necessarily the same as UINT32_MAX or ~(uint32_t)0, it just happens to be the same in our current environments.
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File size: 104.1 KB

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1	/* $Id: DevVGA_VBVA.cpp 72060 2018-04-28 21:10:04Z 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.virtualbox.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_MAX)
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", cbCmd, pHdr->x, pHdr->y, pHdr->w, pHdr->h));
447	LogRel3(("%s: update command cbCmd = %d, x=%d, y=%d, w=%d, h=%d\n",
448	__FUNCTION__, cbCmd, pHdr->x, pHdr->y, pHdr->w, pHdr->h));
449
450	/* Collect all rects into one. */
451	if (fDirtyEmpty)
452	{
453	/* This is the first rectangle to be added. */
454	dirtyRect.xLeft = pHdr->x;
455	dirtyRect.yTop = pHdr->y;
456	dirtyRect.xRight = xRight;
457	dirtyRect.yBottom = yBottom;
458	fDirtyEmpty = false;
459	}
460	else
461	{
462	/* Adjust region coordinates. */
463	if (dirtyRect.xLeft > pHdr->x)
464	{
465	dirtyRect.xLeft = pHdr->x;
466	}
467
468	if (dirtyRect.yTop > pHdr->y)
469	{
470	dirtyRect.yTop = pHdr->y;
471	}
472
473	if (dirtyRect.xRight < xRight)
474	{
475	dirtyRect.xRight = xRight;
476	}
477
478	if (dirtyRect.yBottom < yBottom)
479	{
480	dirtyRect.yBottom = yBottom;
481	}
482	}
483	}
484
485	vbvaReleaseCmd(pVBVAData, pHdr, cbCmd);
486	}
487
488	if (fUpdate)
489	{
490	if (dirtyRect.xRight - dirtyRect.xLeft)
491	{
492	LogRel3(("%s: sending update screen=%d, x=%d, y=%d, w=%d, h=%d\n",
493	__FUNCTION__, uScreenId, dirtyRect.xLeft,
494	dirtyRect.yTop, dirtyRect.xRight - dirtyRect.xLeft,
495	dirtyRect.yBottom - dirtyRect.yTop));
496	pVGAState->pDrv->pfnVBVAUpdateEnd(pVGAState->pDrv, uScreenId, dirtyRect.xLeft, dirtyRect.yTop,
497	dirtyRect.xRight - dirtyRect.xLeft, dirtyRect.yBottom - dirtyRect.yTop);
498	}
499	else
500	{
501	pVGAState->pDrv->pfnVBVAUpdateEnd(pVGAState->pDrv, uScreenId, 0, 0, 0, 0);
502	}
503	}
504
505	return VINF_SUCCESS;
506	}
507
508	static int vbvaFlush(PVGASTATE pVGAState, VBVACONTEXT *pCtx)
509	{
510	int rc = VINF_SUCCESS;
511
512	unsigned uScreenId;
513	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
514	{
515	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
516	if (pVBVAData->guest.pVBVA)
517	{
518	rc = vbvaFlushProcess(uScreenId, pVGAState, pVBVAData);
519	if (RT_FAILURE(rc))
520	break;
521	}
522	}
523
524	if (RT_FAILURE(rc))
525	{
526	/* Turn off VBVA processing. */
527	LogRel(("VBVA: Disabling (%Rrc)\n", rc));
528	pVGAState->fGuestCaps = 0;
529	pVGAState->pDrv->pfnVBVAGuestCapabilityUpdate(pVGAState->pDrv, pVGAState->fGuestCaps);
530	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
531	{
532	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
533	if (pVBVAData->guest.pVBVA)
534	{
535	vbvaDataCleanup(pVBVAData);
536	pVGAState->pDrv->pfnVBVADisable(pVGAState->pDrv, uScreenId);
537	}
538	}
539	}
540
541	return rc;
542	}
543
544	static int vbvaResize(PVGASTATE pVGAState, VBVAVIEW pView, const VBVAINFOSCREEN pNewScreen, bool fResetInputMapping)
545	{
546	/* Callers ensure that pNewScreen contains valid data. */
547
548	/* Apply these changes. */
549	pView->screen = *pNewScreen;
550
551	uint8_t *pu8VRAM = pVGAState->vram_ptrR3 + pView->view.u32ViewOffset;
552	return pVGAState->pDrv->pfnVBVAResize (pVGAState->pDrv, &pView->view, &pView->screen, pu8VRAM, fResetInputMapping);
553	}
554
555	static int vbvaEnable(unsigned uScreenId, PVGASTATE pVGAState, VBVACONTEXT *pCtx,
556	VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST *pVBVA, uint32_t u32Offset, bool fRestored)
557	{
558	/*
559	* Copy into non-volatile memory and validate its content.
560	*/
561	VBVABUFFER VbgaSafe;
562	RT_COPY_VOLATILE(VbgaSafe, *pVBVA);
563	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
564
565	uint32_t const cbVBVABuffer = RT_UOFFSETOF(VBVABUFFER, au8Data) + VbgaSafe.cbData;
566	ASSERT_GUEST_RETURN( VbgaSafe.cbData <= UINT32_MAX - RT_UOFFSETOF(VBVABUFFER, au8Data)
567	&& cbVBVABuffer <= pVGAState->vram_size
568	&& u32Offset <= pVGAState->vram_size - cbVBVABuffer,
569	VERR_INVALID_PARAMETER);
570	if (!fRestored)
571	{
572	ASSERT_GUEST_RETURN(VbgaSafe.off32Data == 0, VERR_INVALID_PARAMETER);
573	ASSERT_GUEST_RETURN(VbgaSafe.off32Free == 0, VERR_INVALID_PARAMETER);
574	ASSERT_GUEST_RETURN(VbgaSafe.indexRecordFirst == 0, VERR_INVALID_PARAMETER);
575	ASSERT_GUEST_RETURN(VbgaSafe.indexRecordFree == 0, VERR_INVALID_PARAMETER);
576	}
577	ASSERT_GUEST_RETURN( VbgaSafe.cbPartialWriteThreshold < VbgaSafe.cbData
578	&& VbgaSafe.cbPartialWriteThreshold != 0,
579	VERR_INVALID_PARAMETER);
580	RT_UNTRUSTED_VALIDATED_FENCE();
581
582	/*
583	* Okay, try do the job.
584	*/
585	int rc;
586	if (pVGAState->pDrv->pfnVBVAEnable)
587	{
588	pVBVA->hostFlags.u32HostEvents = 0;
589	pVBVA->hostFlags.u32SupportedOrders = 0;
590	rc = pVGAState->pDrv->pfnVBVAEnable(pVGAState->pDrv, uScreenId, &pVBVA->hostFlags, false);
591	if (RT_SUCCESS(rc))
592	{
593	/* pVBVA->hostFlags has been set up by pfnVBVAEnable. */
594	LogFlowFunc(("u32HostEvents=0x%08x u32SupportedOrders=0x%08x\n",
595	pVBVA->hostFlags.u32HostEvents, pVBVA->hostFlags.u32SupportedOrders));
596
597	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
598	pVBVAData->guest.pVBVA = pVBVA;
599	pVBVAData->guest.pu8Data = &pVBVA->au8Data[0];
600	pVBVAData->u32VBVAOffset = u32Offset;
601	pVBVAData->off32Data = VbgaSafe.off32Data;
602	pVBVAData->indexRecordFirst = VbgaSafe.indexRecordFirst;
603	pVBVAData->cbPartialWriteThreshold = VbgaSafe.cbPartialWriteThreshold;
604	pVBVAData->cbData = VbgaSafe.cbData;
605
606	if (!fRestored)
607	{
608	/** @todo Actually this function must not touch the partialRecord structure at all,
609	* because initially it is a zero and when VBVA is disabled this should be set to zero.
610	* But I'm not sure that no code depends on zeroing partialRecord here.
611	* So for now (a quick fix for 4.1) just do not do this if the VM was restored,
612	* when partialRecord might be loaded already from the saved state.
613	*/
614	pVBVAData->partialRecord.pu8 = NULL;
615	pVBVAData->partialRecord.cb = 0;
616	}
617
618	/* VBVA is working so disable the pause. */
619	pCtx->fPaused = false;
620	}
621	}
622	else
623	rc = VERR_NOT_SUPPORTED;
624	return rc;
625	}
626
627	static int vbvaDisable (unsigned uScreenId, PVGASTATE pVGAState, VBVACONTEXT *pCtx)
628	{
629	/* Process any pending orders and empty the VBVA ring buffer. */
630	vbvaFlush (pVGAState, pCtx);
631
632	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
633	vbvaDataCleanup(pVBVAData);
634
635	if (uScreenId == 0)
636	{
637	pVGAState->fGuestCaps = 0;
638	pVGAState->pDrv->pfnVBVAGuestCapabilityUpdate(pVGAState->pDrv, pVGAState->fGuestCaps);
639	}
640	pVGAState->pDrv->pfnVBVADisable(pVGAState->pDrv, uScreenId);
641	return VINF_SUCCESS;
642	}
643
644	bool VBVAIsEnabled(PVGASTATE pVGAState)
645	{
646	PHGSMIINSTANCE pHGSMI = pVGAState->pHGSMI;
647	if (pHGSMI)
648	{
649	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pHGSMI);
650	if (pCtx)
651	{
652	if (pCtx->cViews)
653	{
654	VBVAVIEW * pView = &pCtx->aViews[0];
655	if (pView->vbva.guest.pVBVA)
656	return true;
657	}
658	}
659	}
660	return false;
661	}
662
663	#ifdef DEBUG_sunlover
664	void dumpMouseShapeInfo(const VBVAMOUSESHAPEINFO *pMouseShapeInfo)
665	{
666	LogFlow(("fSet = %d, fVisible %d, fAlpha %d, @%d,%d %dx%d (%p, %d/%d)\n",
667	pMouseShapeInfo->fSet,
668	pMouseShapeInfo->fVisible,
669	pMouseShapeInfo->fAlpha,
670	pMouseShapeInfo->u32HotX,
671	pMouseShapeInfo->u32HotY,
672	pMouseShapeInfo->u32Width,
673	pMouseShapeInfo->u32Height,
674	pMouseShapeInfo->pu8Shape,
675	pMouseShapeInfo->cbShape,
676	pMouseShapeInfo->cbAllocated
677	));
678	}
679	#endif
680
681	static int vbvaUpdateMousePointerShape(PVGASTATE pVGAState, VBVAMOUSESHAPEINFO *pMouseShapeInfo, bool fShape)
682	{
683	LogFlowFunc(("pVGAState %p, pMouseShapeInfo %p, fShape %d\n",
684	pVGAState, pMouseShapeInfo, fShape));
685	#ifdef DEBUG_sunlover
686	dumpMouseShapeInfo(pMouseShapeInfo);
687	#endif
688
689	if (pVGAState->pDrv->pfnVBVAMousePointerShape == NULL)
690	{
691	return VERR_NOT_SUPPORTED;
692	}
693
694	int rc;
695	if (fShape && pMouseShapeInfo->pu8Shape != NULL)
696	{
697	rc = pVGAState->pDrv->pfnVBVAMousePointerShape (pVGAState->pDrv,
698	pMouseShapeInfo->fVisible,
699	pMouseShapeInfo->fAlpha,
700	pMouseShapeInfo->u32HotX,
701	pMouseShapeInfo->u32HotY,
702	pMouseShapeInfo->u32Width,
703	pMouseShapeInfo->u32Height,
704	pMouseShapeInfo->pu8Shape);
705	}
706	else
707	{
708	rc = pVGAState->pDrv->pfnVBVAMousePointerShape (pVGAState->pDrv,
709	pMouseShapeInfo->fVisible,
710	false,
711	0, 0,
712	0, 0,
713	NULL);
714	}
715
716	return rc;
717	}
718
719	static int vbvaMousePointerShape(PVGASTATE pVGAState, VBVACONTEXT *pCtx,
720	const VBVAMOUSEPOINTERSHAPE RT_UNTRUSTED_VOLATILE_GUEST *pShape, HGSMISIZE cbShape)
721	{
722	/*
723	* Make non-volatile copy of the shape header and validate it.
724	*/
725	VBVAMOUSEPOINTERSHAPE SafeShape;
726	RT_COPY_VOLATILE(SafeShape, *pShape);
727	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
728
729	LogFlowFunc(("VBVA_MOUSE_POINTER_SHAPE: i32Result 0x%x, fu32Flags 0x%x, hot spot %d,%d, size %dx%d\n",
730	SafeShape.i32Result, SafeShape.fu32Flags, SafeShape.u32HotX, SafeShape.u32HotY, SafeShape.u32Width, SafeShape.u32Height));
731
732	const bool fVisible = RT_BOOL(SafeShape.fu32Flags & VBOX_MOUSE_POINTER_VISIBLE);
733	const bool fAlpha = RT_BOOL(SafeShape.fu32Flags & VBOX_MOUSE_POINTER_ALPHA);
734	const bool fShape = RT_BOOL(SafeShape.fu32Flags & VBOX_MOUSE_POINTER_SHAPE);
735
736	HGSMISIZE cbPointerData = 0;
737	if (fShape)
738	{
739	static const uint32_t s_cxMax = 2048; //used to be: 8192;
740	static const uint32_t s_cyMax = 2048; //used to be: 8192;
741	ASSERT_GUEST_MSG_RETURN( SafeShape.u32Width <= s_cxMax
742	\|\| SafeShape.u32Height <= s_cyMax,
743	("Too large: %ux%u, max %ux%x\n", SafeShape.u32Width, SafeShape.u32Height, s_cxMax, s_cyMax),
744	VERR_INVALID_PARAMETER);
745
746	cbPointerData = ((((SafeShape.u32Width + 7) / 8) * SafeShape.u32Height + 3) & ~3)
747	+ SafeShape.u32Width * 4 * SafeShape.u32Height;
748
749	ASSERT_GUEST_MSG_RETURN(cbPointerData <= cbShape - RT_UOFFSETOF(VBVAMOUSEPOINTERSHAPE, au8Data),
750	("Insufficent pointer data: Expected %#x, got %#x\n",
751	cbPointerData, cbShape - RT_UOFFSETOF(VBVAMOUSEPOINTERSHAPE, au8Data) ),
752	VERR_INVALID_PARAMETER);
753	}
754	RT_UNTRUSTED_VALIDATED_FENCE();
755
756	/*
757	* Do the job.
758	*/
759	/* Save mouse info it will be used to restore mouse pointer after restoring saved state. */
760	pCtx->mouseShapeInfo.fSet = true;
761	pCtx->mouseShapeInfo.fVisible = fVisible;
762	if (fShape)
763	{
764	/* Data related to shape. */
765	pCtx->mouseShapeInfo.u32HotX = SafeShape.u32HotX;
766	pCtx->mouseShapeInfo.u32HotY = SafeShape.u32HotY;
767	pCtx->mouseShapeInfo.u32Width = SafeShape.u32Width;
768	pCtx->mouseShapeInfo.u32Height = SafeShape.u32Height;
769	pCtx->mouseShapeInfo.fAlpha = fAlpha;
770
771	/* Reallocate memory buffer if necessary. */
772	if (cbPointerData > pCtx->mouseShapeInfo.cbAllocated)
773	{
774	RTMemFree(pCtx->mouseShapeInfo.pu8Shape);
775	pCtx->mouseShapeInfo.pu8Shape = NULL;
776	pCtx->mouseShapeInfo.cbShape = 0;
777
778	uint8_t pu8Shape = (uint8_t )RTMemAlloc(cbPointerData);
779	if (pu8Shape)
780	{
781	pCtx->mouseShapeInfo.pu8Shape = pu8Shape;
782	pCtx->mouseShapeInfo.cbAllocated = cbPointerData;
783	}
784	}
785
786	/* Copy shape bitmaps. */
787	if (pCtx->mouseShapeInfo.pu8Shape)
788	{
789	RT_BCOPY_VOLATILE(pCtx->mouseShapeInfo.pu8Shape, &pShape->au8Data[0], cbPointerData);
790	pCtx->mouseShapeInfo.cbShape = cbPointerData;
791	}
792	}
793
794	return vbvaUpdateMousePointerShape(pVGAState, &pCtx->mouseShapeInfo, fShape);
795	}
796
797	static uint32_t vbvaViewFromBufferPtr(PHGSMIINSTANCE pIns, const VBVACONTEXT *pCtx,
798	const void RT_UNTRUSTED_VOLATILE_GUEST *pvBuffer)
799	{
800	/* Check which view contains the buffer. */
801	HGSMIOFFSET offBuffer = HGSMIPointerToOffsetHost(pIns, pvBuffer);
802	if (offBuffer != HGSMIOFFSET_VOID)
803	{
804	unsigned uScreenId;
805	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
806	{
807	const VBVAINFOVIEW *pView = &pCtx->aViews[uScreenId].view;
808	if ((uint32_t)(offBuffer - pView->u32ViewOffset) < pView->u32ViewSize)
809	return pView->u32ViewIndex;
810	}
811	}
812	return UINT32_MAX;
813	}
814
815	#ifdef DEBUG_sunlover
816	static void dumpctx(const VBVACONTEXT *pCtx)
817	{
818	Log(("VBVACONTEXT dump: cViews %d\n", pCtx->cViews));
819
820	uint32_t iView;
821	for (iView = 0; iView < pCtx->cViews; iView++)
822	{
823	const VBVAVIEW *pView = &pCtx->aViews[iView];
824
825	Log((" view %d o 0x%x s 0x%x m 0x%x\n",
826	pView->view.u32ViewIndex,
827	pView->view.u32ViewOffset,
828	pView->view.u32ViewSize,
829	pView->view.u32MaxScreenSize));
830
831	Log((" screen %d @%d,%d s 0x%x l 0x%x %dx%d bpp %d f 0x%x\n",
832	pView->screen.u32ViewIndex,
833	pView->screen.i32OriginX,
834	pView->screen.i32OriginY,
835	pView->screen.u32StartOffset,
836	pView->screen.u32LineSize,
837	pView->screen.u32Width,
838	pView->screen.u32Height,
839	pView->screen.u16BitsPerPixel,
840	pView->screen.u16Flags));
841
842	Log((" VBVA o 0x%x p %p\n",
843	pView->vbva.u32VBVAOffset,
844	pView->vbva.guest.pVBVA));
845
846	Log((" PR cb 0x%x p %p\n",
847	pView->vbva.partialRecord.cb,
848	pView->vbva.partialRecord.pu8));
849	}
850
851	dumpMouseShapeInfo(&pCtx->mouseShapeInfo);
852	}
853	#endif /* DEBUG_sunlover */
854
855	#define VBOXVBVASAVEDSTATE_VHWAAVAILABLE_MAGIC 0x12345678
856	#define VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC 0x9abcdef0
857
858	#ifdef VBOX_WITH_VIDEOHWACCEL
859	static void vbvaVHWAHHCommandReinit(VBOXVHWACMD* pHdr, VBOXVHWACMD_TYPE enmCmd, int32_t iDisplay)
860	{
861	memset(pHdr, 0, VBOXVHWACMD_HEADSIZE());
862	pHdr->cRefs = 1;
863	pHdr->iDisplay = iDisplay;
864	pHdr->rc = VERR_NOT_IMPLEMENTED;
865	pHdr->enmCmd = enmCmd;
866	pHdr->Flags = VBOXVHWACMD_FLAG_HH_CMD;
867	}
868
869	static VBOXVHWACMD *vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE enmCmd, int32_t iDisplay, VBOXVHWACMD_LENGTH cbCmd)
870	{
871	VBOXVHWACMD pHdr = (VBOXVHWACMD )RTMemAllocZ(cbCmd + VBOXVHWACMD_HEADSIZE());
872	Assert(pHdr);
873	if (pHdr)
874	vbvaVHWAHHCommandReinit(pHdr, enmCmd, iDisplay);
875
876	return pHdr;
877	}
878
879	DECLINLINE(void) vbvaVHWAHHCommandRelease(VBOXVHWACMD *pCmd)
880	{
881	uint32_t cRefs = ASMAtomicDecU32(&pCmd->cRefs);
882	if (!cRefs)
883	RTMemFree(pCmd);
884	}
885
886	DECLINLINE(void) vbvaVHWAHHCommandRetain(VBOXVHWACMD *pCmd)
887	{
888	ASMAtomicIncU32(&pCmd->cRefs);
889	}
890
891	static void vbvaVHWACommandComplete(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand, bool fAsyncCommand)
892	{
893	if (fAsyncCommand)
894	{
895	Assert(pCommand->Flags & VBOXVHWACMD_FLAG_HG_ASYNCH);
896	vbvaVHWACommandCompleteAsync(&pVGAState->IVBVACallbacks, pCommand);
897	}
898	else
899	{
900	Log(("VGA Command <<< Sync rc %d %#p, %d\n", pCommand->rc, pCommand, pCommand->enmCmd));
901	pCommand->Flags &= ~VBOXVHWACMD_FLAG_HG_ASYNCH;
902	}
903
904	}
905
906	static void vbvaVHWACommandCompleteAllPending(PVGASTATE pVGAState, int rc)
907	{
908	if (!ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending))
909	return;
910
911	PDMCritSectEnter(&pVGAState->CritSect, VERR_SEM_BUSY);
912
913	VBOX_VHWA_PENDINGCMD pIter, pNext;
914	RTListForEachSafe(&pVGAState->pendingVhwaCommands.PendingList, pIter, pNext, VBOX_VHWA_PENDINGCMD, Node)
915	{
916	pIter->pCommand->rc = rc;
917	vbvaVHWACommandComplete(pVGAState, pIter->pCommand, true);
918
919	/* the command is submitted/processed, remove from the pend list */
920	RTListNodeRemove(&pIter->Node);
921	ASMAtomicDecU32(&pVGAState->pendingVhwaCommands.cPending);
922	RTMemFree(pIter);
923	}
924
925	PDMCritSectLeave(&pVGAState->CritSect);
926	}
927
928	static void vbvaVHWACommandClearAllPending(PVGASTATE pVGAState)
929	{
930	if (!ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending))
931	return;
932
933	PDMCritSectEnter(&pVGAState->CritSect, VERR_SEM_BUSY);
934
935	VBOX_VHWA_PENDINGCMD pIter, pNext;
936	RTListForEachSafe(&pVGAState->pendingVhwaCommands.PendingList, pIter, pNext, VBOX_VHWA_PENDINGCMD, Node)
937	{
938	RTListNodeRemove(&pIter->Node);
939	ASMAtomicDecU32(&pVGAState->pendingVhwaCommands.cPending);
940	RTMemFree(pIter);
941	}
942
943	PDMCritSectLeave(&pVGAState->CritSect);
944	}
945
946	static void vbvaVHWACommandPend(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand)
947	{
948	int rc = VERR_BUFFER_OVERFLOW;
949
950	if (ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending) < VBOX_VHWA_MAX_PENDING_COMMANDS)
951	{
952	VBOX_VHWA_PENDINGCMD pPend = (VBOX_VHWA_PENDINGCMD )RTMemAlloc(sizeof(*pPend));
953	if (pPend)
954	{
955	pCommand->Flags \|= VBOXVHWACMD_FLAG_HG_ASYNCH;
956	pPend->pCommand = pCommand;
957	PDMCritSectEnter(&pVGAState->CritSect, VERR_SEM_BUSY);
958	if (ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending) < VBOX_VHWA_MAX_PENDING_COMMANDS)
959	{
960	RTListAppend(&pVGAState->pendingVhwaCommands.PendingList, &pPend->Node);
961	ASMAtomicIncU32(&pVGAState->pendingVhwaCommands.cPending);
962	PDMCritSectLeave(&pVGAState->CritSect);
963	return;
964	}
965	PDMCritSectLeave(&pVGAState->CritSect);
966	LogRel(("VBVA: Pending command count has reached its threshold.. completing them all.."));
967	RTMemFree(pPend);
968	}
969	else
970	rc = VERR_NO_MEMORY;
971	}
972	else
973	LogRel(("VBVA: Pending command count has reached its threshold, completing them all.."));
974
975	vbvaVHWACommandCompleteAllPending(pVGAState, rc);
976
977	pCommand->rc = rc;
978
979	vbvaVHWACommandComplete(pVGAState, pCommand, false);
980	}
981
982	static bool vbvaVHWACommandCanPend(VBOXVHWACMD_TYPE enmCmd)
983	{
984	switch (enmCmd)
985	{
986	case VBOXVHWACMD_TYPE_HH_CONSTRUCT:
987	case VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN:
988	case VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND:
989	case VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM:
990	case VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM:
991	return false;
992	default:
993	return true;
994	}
995	}
996
997	static int vbvaVHWACommandSavePending(PVGASTATE pVGAState, PSSMHANDLE pSSM)
998	{
999	int rc = SSMR3PutU32(pSSM, pVGAState->pendingVhwaCommands.cPending);
1000	AssertRCReturn(rc, rc);
1001
1002	VBOX_VHWA_PENDINGCMD *pIter;
1003	RTListForEach(&pVGAState->pendingVhwaCommands.PendingList, pIter, VBOX_VHWA_PENDINGCMD, Node)
1004	{
1005	AssertContinue((uintptr_t)pIter->pCommand - (uintptr_t)pVGAState->vram_ptrR3 < pVGAState->vram_size);
1006	rc = SSMR3PutU32(pSSM, (uint32_t)(((uint8_t )pIter->pCommand) - ((uint8_t )pVGAState->vram_ptrR3)));
1007	AssertRCReturn(rc, rc);
1008	}
1009	return rc;
1010	}
1011
1012	static int vbvaVHWACommandLoadPending(PVGASTATE pVGAState, PSSMHANDLE pSSM, uint32_t u32Version)
1013	{
1014	if (u32Version < VGA_SAVEDSTATE_VERSION_WITH_PENDVHWA)
1015	return VINF_SUCCESS;
1016
1017	uint32_t u32;
1018	int rc = SSMR3GetU32(pSSM, &u32);
1019	AssertRCReturn(rc, rc);
1020	for (uint32_t i = 0; i < u32; ++i)
1021	{
1022	uint32_t off32;
1023	rc = SSMR3GetU32(pSSM, &off32);
1024	AssertRCReturn(rc, rc);
1025	VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand
1026	= (VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST )((uint8_t volatile )pVGAState->vram_ptrR3 + off32);
1027	vbvaVHWACommandPend(pVGAState, pCommand);
1028	}
1029	return rc;
1030	}
1031
1032
1033	/** Worker for vbvaVHWACommandSubmit. */
1034	static bool vbvaVHWACommandSubmitInner(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST pCommand, bool pfPending)
1035	{
1036	*pfPending = false;
1037
1038	/*
1039	* Read the command type and validate it and our driver state.
1040	*/
1041	VBOXVHWACMD_TYPE enmCmd = pCommand->enmCmd;
1042	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
1043
1044	bool fGuestCmd = (uintptr_t)pCommand - (uintptr_t)pVGAState->vram_ptrR3 < pVGAState->vram_size;
1045	ASSERT_GUEST_LOGREL_MSG_STMT_RETURN( !fGuestCmd
1046	\|\| ( enmCmd != VBOXVHWACMD_TYPE_HH_CONSTRUCT
1047	&& enmCmd != VBOXVHWACMD_TYPE_HH_RESET
1048	&& enmCmd != VBOXVHWACMD_TYPE_HH_DISABLE
1049	&& enmCmd != VBOXVHWACMD_TYPE_HH_ENABLE
1050	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN
1051	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND
1052	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM
1053	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM),
1054	("enmCmd=%d\n", enmCmd),
1055	pCommand->rc = VERR_INVALID_PARAMETER,
1056	true);
1057	ASSERT_GUEST_STMT_RETURN(pVGAState->pDrv->pfnVHWACommandProcess, pCommand->rc = VERR_INVALID_STATE, true);
1058	RT_UNTRUSTED_VALIDATED_FENCE();
1059
1060	/*
1061	* Call the driver to process the command.
1062	*/
1063	Log(("VGA Command >>> %#p, %d\n", pCommand, enmCmd));
1064	int rc = pVGAState->pDrv->pfnVHWACommandProcess(pVGAState->pDrv, enmCmd, fGuestCmd, pCommand);
1065	if (rc == VINF_CALLBACK_RETURN)
1066	{
1067	Log(("VGA Command --- Going Async %#p, %d\n", pCommand, enmCmd));
1068	*pfPending = true;
1069	return true; /* Command will be completed asynchronously by the driver and need not be put in the pending list. */
1070	}
1071
1072	if (rc == VERR_INVALID_STATE)
1073	{
1074	Log(("VGA Command --- Trying Pend %#p, %d\n", pCommand, enmCmd));
1075	if (vbvaVHWACommandCanPend(enmCmd))
1076	{
1077	Log(("VGA Command --- Can Pend %#p, %d\n", pCommand, enmCmd));
1078	*pfPending = true;
1079	return false; /* put on pending list so it can be retried?? */
1080	}
1081
1082	Log(("VGA Command --- Can NOT Pend %#p, %d\n", pCommand, enmCmd));
1083	}
1084	else
1085	Log(("VGA Command --- Going Complete Sync rc %d %#p, %d\n", rc, pCommand, enmCmd));
1086
1087	/* the command was completed, take a special care about it (see caller) */
1088	pCommand->rc = rc;
1089	return true;
1090	}
1091
1092
1093	static bool vbvaVHWACommandSubmit(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand, bool fAsyncCommand)
1094	{
1095	bool fPending = false;
1096	bool fRet = vbvaVHWACommandSubmitInner(pVGAState, pCommand, &fPending);
1097	if (!fPending)
1098	vbvaVHWACommandComplete(pVGAState, pCommand, fAsyncCommand);
1099	return fRet;
1100	}
1101
1102
1103	/**
1104	* @returns false if commands are pending, otherwise true.
1105	*/
1106	static bool vbvaVHWACheckPendingCommands(PVGASTATE pVGAState)
1107	{
1108	if (!ASMAtomicUoReadU32(&pVGAState->pendingVhwaCommands.cPending))
1109	return true;
1110
1111	PDMCritSectEnter(&pVGAState->CritSect, VERR_SEM_BUSY);
1112
1113	VBOX_VHWA_PENDINGCMD pIter, pNext;
1114	RTListForEachSafe(&pVGAState->pendingVhwaCommands.PendingList, pIter, pNext, VBOX_VHWA_PENDINGCMD, Node)
1115	{
1116	if (!vbvaVHWACommandSubmit(pVGAState, pIter->pCommand, true))
1117	{
1118	PDMCritSectLeave(&pVGAState->CritSect);
1119	return false; /* the command should be still pending */
1120	}
1121
1122	/* the command is submitted/processed, remove from the pend list */
1123	RTListNodeRemove(&pIter->Node);
1124	ASMAtomicDecU32(&pVGAState->pendingVhwaCommands.cPending);
1125	RTMemFree(pIter);
1126	}
1127
1128	PDMCritSectLeave(&pVGAState->CritSect);
1129
1130	return true;
1131	}
1132
1133	void vbvaTimerCb(PVGASTATE pVGAState)
1134	{
1135	vbvaVHWACheckPendingCommands(pVGAState);
1136	}
1137
1138	static void vbvaVHWAHandleCommand(PVGASTATE pVGAState, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCmd)
1139	{
1140	if (vbvaVHWACheckPendingCommands(pVGAState))
1141	{
1142	if (vbvaVHWACommandSubmit(pVGAState, pCmd, false))
1143	return;
1144	}
1145
1146	vbvaVHWACommandPend(pVGAState, pCmd);
1147	}
1148
1149	static DECLCALLBACK(void) vbvaVHWAHHCommandSetEventCallback(void * pContext)
1150	{
1151	RTSemEventSignal((RTSEMEVENT)pContext);
1152	}
1153
1154	static int vbvaVHWAHHCommandPost(PVGASTATE pVGAState, VBOXVHWACMD *pCmd)
1155	{
1156	RTSEMEVENT hComplEvent;
1157	int rc = RTSemEventCreate(&hComplEvent);
1158	AssertRC(rc);
1159	if (RT_SUCCESS(rc))
1160	{
1161	/* ensure the cmd is not deleted until we process it */
1162	vbvaVHWAHHCommandRetain(pCmd);
1163
1164	VBOXVHWA_HH_CALLBACK_SET(pCmd, vbvaVHWAHHCommandSetEventCallback, (void *)hComplEvent);
1165	vbvaVHWAHandleCommand(pVGAState, pCmd);
1166
1167	if ((ASMAtomicReadU32((volatile uint32_t *)&pCmd->Flags) & VBOXVHWACMD_FLAG_HG_ASYNCH) != 0)
1168	rc = RTSemEventWaitNoResume(hComplEvent, RT_INDEFINITE_WAIT); /** @todo Why the NoResume and event leaking here? */
1169	/* else: the command is completed */
1170
1171	AssertRC(rc);
1172	if (RT_SUCCESS(rc))
1173	RTSemEventDestroy(hComplEvent);
1174
1175	vbvaVHWAHHCommandRelease(pCmd);
1176	}
1177	return rc;
1178	}
1179
1180	int vbvaVHWAConstruct(PVGASTATE pVGAState)
1181	{
1182	pVGAState->pendingVhwaCommands.cPending = 0;
1183	RTListInit(&pVGAState->pendingVhwaCommands.PendingList);
1184
1185	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_CONSTRUCT, 0, sizeof(VBOXVHWACMD_HH_CONSTRUCT));
1186	Assert(pCmd);
1187	if(pCmd)
1188	{
1189	uint32_t iDisplay = 0;
1190	int rc = VINF_SUCCESS;
1191	VBOXVHWACMD_HH_CONSTRUCT *pBody = VBOXVHWACMD_BODY_HOST_HEAP(pCmd, VBOXVHWACMD_HH_CONSTRUCT);
1192
1193	do
1194	{
1195	memset(pBody, 0, sizeof(VBOXVHWACMD_HH_CONSTRUCT));
1196
1197	PPDMDEVINS pDevIns = pVGAState->pDevInsR3;
1198	PVM pVM = PDMDevHlpGetVM(pDevIns);
1199
1200	pBody->pVM = pVM;
1201	pBody->pvVRAM = pVGAState->vram_ptrR3;
1202	pBody->cbVRAM = pVGAState->vram_size;
1203
1204	rc = vbvaVHWAHHCommandPost(pVGAState, pCmd);
1205	ASMCompilerBarrier();
1206
1207	AssertRC(rc);
1208	if (RT_SUCCESS(rc))
1209	{
1210	rc = pCmd->rc;
1211	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NOT_IMPLEMENTED, ("%Rrc\n", rc));
1212	if(rc == VERR_NOT_IMPLEMENTED)
1213	{
1214	/** @todo set some flag in pVGAState indicating VHWA is not supported */
1215	/* VERR_NOT_IMPLEMENTED is not a failure, we just do not support it */
1216	rc = VINF_SUCCESS;
1217	}
1218
1219	if (!RT_SUCCESS(rc))
1220	break;
1221	}
1222	else
1223	break;
1224
1225	++iDisplay;
1226	if (iDisplay >= pVGAState->cMonitors)
1227	break;
1228	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_CONSTRUCT, (int32_t)iDisplay);
1229	} while (true);
1230
1231	vbvaVHWAHHCommandRelease(pCmd);
1232
1233	return rc;
1234	}
1235	return VERR_OUT_OF_RESOURCES;
1236	}
1237
1238	int vbvaVHWAReset(PVGASTATE pVGAState)
1239	{
1240	vbvaVHWACommandClearAllPending(pVGAState);
1241
1242	/* ensure we have all pending cmds processed and h->g cmds disabled */
1243	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_RESET, 0, 0);
1244	Assert(pCmd);
1245	if (pCmd)
1246	{
1247	int rc = VINF_SUCCESS;
1248	uint32_t iDisplay = 0;
1249
1250	do
1251	{
1252	rc = vbvaVHWAHHCommandPost(pVGAState, pCmd);
1253	AssertRC(rc);
1254	if(RT_SUCCESS(rc))
1255	{
1256	rc = pCmd->rc;
1257	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NOT_IMPLEMENTED, ("%Rrc\n", rc));
1258	if (rc == VERR_NOT_IMPLEMENTED)
1259	rc = VINF_SUCCESS;
1260	}
1261
1262	if (!RT_SUCCESS(rc))
1263	break;
1264
1265	++iDisplay;
1266	if (iDisplay >= pVGAState->cMonitors)
1267	break;
1268	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_RESET, (int32_t)iDisplay);
1269
1270	} while (true);
1271
1272	vbvaVHWAHHCommandRelease(pCmd);
1273
1274	return rc;
1275	}
1276	return VERR_OUT_OF_RESOURCES;
1277	}
1278
1279	typedef DECLCALLBACK(bool) FNVBOXVHWAHHCMDPRECB(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext);
1280	typedef FNVBOXVHWAHHCMDPRECB *PFNVBOXVHWAHHCMDPRECB;
1281
1282	typedef DECLCALLBACK(bool) FNVBOXVHWAHHCMDPOSTCB(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, int rc, void pvContext);
1283	typedef FNVBOXVHWAHHCMDPOSTCB *PFNVBOXVHWAHHCMDPOSTCB;
1284
1285	int vbvaVHWAHHPost(PVGASTATE pVGAState, VBOXVHWACMD pCmd, PFNVBOXVHWAHHCMDPRECB pfnPre, PFNVBOXVHWAHHCMDPOSTCB pfnPost, void pvContext)
1286	{
1287	const VBOXVHWACMD_TYPE enmType = pCmd->enmCmd;
1288	int rc = VINF_SUCCESS;
1289	uint32_t iDisplay = 0;
1290
1291	do
1292	{
1293	if (!pfnPre \|\| pfnPre(pVGAState, pCmd, iDisplay, pvContext))
1294	{
1295	rc = vbvaVHWAHHCommandPost(pVGAState, pCmd);
1296	AssertRC(rc);
1297	if (pfnPost)
1298	{
1299	if (!pfnPost(pVGAState, pCmd, iDisplay, rc, pvContext))
1300	{
1301	rc = VINF_SUCCESS;
1302	break;
1303	}
1304	rc = VINF_SUCCESS;
1305	}
1306	else if(RT_SUCCESS(rc))
1307	{
1308	rc = pCmd->rc;
1309	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NOT_IMPLEMENTED, ("%Rrc\n", rc));
1310	if(rc == VERR_NOT_IMPLEMENTED)
1311	{
1312	rc = VINF_SUCCESS;
1313	}
1314	}
1315
1316	if (!RT_SUCCESS(rc))
1317	break;
1318	}
1319
1320	++iDisplay;
1321	if (iDisplay >= pVGAState->cMonitors)
1322	break;
1323	vbvaVHWAHHCommandReinit(pCmd, enmType, (int32_t)iDisplay);
1324	} while (true);
1325
1326	return rc;
1327	}
1328
1329	/** @todo call this also on reset? */
1330	int vbvaVHWAEnable (PVGASTATE pVGAState, bool bEnable)
1331	{
1332	const VBOXVHWACMD_TYPE enmType = bEnable ? VBOXVHWACMD_TYPE_HH_ENABLE : VBOXVHWACMD_TYPE_HH_DISABLE;
1333	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(enmType, 0, 0);
1334	Assert(pCmd);
1335	if(pCmd)
1336	{
1337	int rc = vbvaVHWAHHPost (pVGAState, pCmd, NULL, NULL, NULL);
1338	vbvaVHWAHHCommandRelease(pCmd);
1339	return rc;
1340	}
1341	return VERR_OUT_OF_RESOURCES;
1342	}
1343
1344	int vboxVBVASaveStatePrep(PPDMDEVINS pDevIns)
1345	{
1346	/* ensure we have no pending commands */
1347	return vbvaVHWAEnable(PDMINS_2_DATA(pDevIns, PVGASTATE), false);
1348	}
1349
1350	int vboxVBVASaveStateDone(PPDMDEVINS pDevIns)
1351	{
1352	/* ensure we have no pending commands */
1353	return vbvaVHWAEnable(PDMINS_2_DATA(pDevIns, PVGASTATE), true);
1354	}
1355
1356	/**
1357	* @interface_method_impl{PDMIDISPLAYVBVACALLBACKS,pfnVHWACommandCompleteAsync}
1358	*/
1359	DECLCALLBACK(int) vbvaVHWACommandCompleteAsync(PPDMIDISPLAYVBVACALLBACKS pInterface, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCmd)
1360	{
1361	PVGASTATE pVGAState = PPDMIDISPLAYVBVACALLBACKS_2_PVGASTATE(pInterface);
1362	int rc;
1363	Log(("VGA Command <<< Async rc %d %#p, %d\n", pCmd->rc, pCmd, pCmd->enmCmd));
1364
1365	if ((uintptr_t)pCmd - (uintptr_t)pVGAState->vram_ptrR3 < pVGAState->vram_size)
1366	{
1367	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
1368	Assert(!(pCmd->Flags & VBOXVHWACMD_FLAG_HH_CMD));
1369	Assert(pCmd->Flags & VBOXVHWACMD_FLAG_HG_ASYNCH);
1370	#ifdef VBOX_WITH_WDDM
1371	if (pVGAState->fGuestCaps & VBVACAPS_COMPLETEGCMD_BY_IOREAD)
1372	{
1373	rc = HGSMICompleteGuestCommand(pIns, pCmd, !!(pCmd->Flags & VBOXVHWACMD_FLAG_GH_ASYNCH_IRQ));
1374	AssertRC(rc);
1375	}
1376	else
1377	#endif
1378	{
1379	VBVAHOSTCMD RT_UNTRUSTED_VOLATILE_GUEST pHostCmd = NULL; / Shut up MSC. */
1380	if (pCmd->Flags & VBOXVHWACMD_FLAG_GH_ASYNCH_EVENT)
1381	{
1382	rc = HGSMIHostCommandAlloc(pIns,
1383	(void RT_UNTRUSTED_VOLATILE_GUEST **)&pHostCmd,
1384	VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDEVENT)),
1385	HGSMI_CH_VBVA,
1386	VBVAHG_EVENT);
1387	AssertRC(rc);
1388	if (RT_SUCCESS(rc))
1389	{
1390	memset((void *)pHostCmd, 0 , VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDEVENT)));
1391	pHostCmd->iDstID = pCmd->iDisplay;
1392	pHostCmd->customOpCode = 0;
1393	VBVAHOSTCMDEVENT RT_UNTRUSTED_VOLATILE_GUEST *pBody = VBVAHOSTCMD_BODY(pHostCmd, VBVAHOSTCMDEVENT);
1394	pBody->pEvent = pCmd->GuestVBVAReserved1;
1395	}
1396	}
1397	else
1398	{
1399	HGSMIOFFSET offCmd = HGSMIPointerToOffsetHost(pIns, pCmd);
1400	Assert(offCmd != HGSMIOFFSET_VOID);
1401	if (offCmd != HGSMIOFFSET_VOID)
1402	{
1403	rc = HGSMIHostCommandAlloc(pIns,
1404	(void RT_UNTRUSTED_VOLATILE_GUEST **)&pHostCmd,
1405	VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDVHWACMDCOMPLETE)),
1406	HGSMI_CH_VBVA,
1407	VBVAHG_DISPLAY_CUSTOM);
1408	AssertRC(rc);
1409	if (RT_SUCCESS(rc))
1410	{
1411	memset((void *)pHostCmd, 0 , VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDVHWACMDCOMPLETE)));
1412	pHostCmd->iDstID = pCmd->iDisplay;
1413	pHostCmd->customOpCode = VBVAHG_DCUSTOM_VHWA_CMDCOMPLETE;
1414	VBVAHOSTCMDVHWACMDCOMPLETE RT_UNTRUSTED_VOLATILE_GUEST *pBody
1415	= VBVAHOSTCMD_BODY(pHostCmd, VBVAHOSTCMDVHWACMDCOMPLETE);
1416	pBody->offCmd = offCmd;
1417	}
1418	}
1419	else
1420	rc = VERR_INVALID_PARAMETER;
1421	}
1422
1423	if (RT_SUCCESS(rc))
1424	{
1425	rc = HGSMIHostCommandSubmitAndFreeAsynch(pIns, pHostCmd, RT_BOOL(pCmd->Flags & VBOXVHWACMD_FLAG_GH_ASYNCH_IRQ));
1426	AssertRC(rc);
1427	if (RT_SUCCESS(rc))
1428	return rc;
1429
1430	HGSMIHostCommandFree (pIns, pHostCmd);
1431	}
1432	}
1433	}
1434	else
1435	{
1436	Assert(pCmd->Flags & VBOXVHWACMD_FLAG_HH_CMD);
1437	PFNVBOXVHWA_HH_CALLBACK pfn = VBOXVHWA_HH_CALLBACK_GET(pCmd);
1438	if (pfn)
1439	pfn(VBOXVHWA_HH_CALLBACK_GET_ARG(pCmd));
1440	rc = VINF_SUCCESS;
1441	}
1442	return rc;
1443	}
1444
1445	typedef struct VBOXVBVASAVEDSTATECBDATA
1446	{
1447	PSSMHANDLE pSSM;
1448	int rc;
1449	bool ab2DOn[VBOX_VIDEO_MAX_SCREENS];
1450	} VBOXVBVASAVEDSTATECBDATA, *PVBOXVBVASAVEDSTATECBDATA;
1451
1452	static DECLCALLBACK(bool) vboxVBVASaveStateBeginPostCb(PVGASTATE pVGAState, VBOXVHWACMD *pCmd, uint32_t iDisplay,
1453	int rc, void *pvContext)
1454	{
1455	RT_NOREF(pVGAState, pCmd);
1456	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1457	if (RT_FAILURE(pData->rc))
1458	return false;
1459	if (RT_FAILURE(rc))
1460	{
1461	pData->rc = rc;
1462	return false;
1463	}
1464
1465	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1466	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1467	{
1468	pData->rc = VERR_INVALID_PARAMETER;
1469	return false;
1470	}
1471
1472	Assert(RT_SUCCESS(pCmd->rc) \|\| pCmd->rc == VERR_NOT_IMPLEMENTED);
1473	if (RT_SUCCESS(pCmd->rc))
1474	{
1475	pData->ab2DOn[iDisplay] = true;
1476	}
1477	else if (pCmd->rc != VERR_NOT_IMPLEMENTED)
1478	{
1479	pData->rc = pCmd->rc;
1480	return false;
1481	}
1482
1483	return true;
1484	}
1485
1486	static DECLCALLBACK(bool)
1487	vboxVBVASaveStatePerformPreCb(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext)
1488	{
1489	RT_NOREF(pVGAState, pCmd);
1490	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1491	if (RT_FAILURE(pData->rc))
1492	return false;
1493
1494	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1495	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1496	{
1497	pData->rc = VERR_INVALID_PARAMETER;
1498	return false;
1499	}
1500
1501	int rc;
1502
1503	if (pData->ab2DOn[iDisplay])
1504	{
1505	rc = SSMR3PutU32 (pData->pSSM, VBOXVBVASAVEDSTATE_VHWAAVAILABLE_MAGIC); AssertRC(rc);
1506	if (RT_FAILURE(rc))
1507	{
1508	pData->rc = rc;
1509	return false;
1510	}
1511	return true;
1512	}
1513
1514	rc = SSMR3PutU32 (pData->pSSM, VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC); AssertRC(rc);
1515	if (RT_FAILURE(rc))
1516	{
1517	pData->rc = rc;
1518	return false;
1519	}
1520
1521	return false;
1522	}
1523
1524	static DECLCALLBACK(bool) vboxVBVASaveStateEndPreCb(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext)
1525	{
1526	RT_NOREF(pVGAState, pCmd);
1527	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1528	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1529	if (pData->ab2DOn[iDisplay])
1530	{
1531	return true;
1532	}
1533
1534	return false;
1535	}
1536
1537	static DECLCALLBACK(bool)
1538	vboxVBVALoadStatePerformPostCb(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, int rc, void pvContext)
1539	{
1540	RT_NOREF(pVGAState, pCmd);
1541	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1542	if (RT_FAILURE(pData->rc))
1543	return false;
1544	if (RT_FAILURE(rc))
1545	{
1546	pData->rc = rc;
1547	return false;
1548	}
1549
1550	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1551	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1552	{
1553	pData->rc = VERR_INVALID_PARAMETER;
1554	return false;
1555	}
1556
1557	Assert(RT_SUCCESS(pCmd->rc) \|\| pCmd->rc == VERR_NOT_IMPLEMENTED);
1558	if (pCmd->rc == VERR_NOT_IMPLEMENTED)
1559	{
1560	pData->rc = SSMR3SkipToEndOfUnit(pData->pSSM);
1561	AssertRC(pData->rc);
1562	return false;
1563	}
1564	if (RT_FAILURE(pCmd->rc))
1565	{
1566	pData->rc = pCmd->rc;
1567	return false;
1568	}
1569
1570	return true;
1571	}
1572
1573	static DECLCALLBACK(bool)
1574	vboxVBVALoadStatePerformPreCb(PVGASTATE pVGAState, VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext)
1575	{
1576	RT_NOREF(pVGAState, pCmd);
1577	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1578	if (RT_FAILURE(pData->rc))
1579	return false;
1580
1581	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1582	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1583	{
1584	pData->rc = VERR_INVALID_PARAMETER;
1585	return false;
1586	}
1587
1588	int rc;
1589	uint32_t u32;
1590	rc = SSMR3GetU32(pData->pSSM, &u32); AssertRC(rc);
1591	if (RT_FAILURE(rc))
1592	{
1593	pData->rc = rc;
1594	return false;
1595	}
1596
1597	switch (u32)
1598	{
1599	case VBOXVBVASAVEDSTATE_VHWAAVAILABLE_MAGIC:
1600	pData->ab2DOn[iDisplay] = true;
1601	return true;
1602	case VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC:
1603	pData->ab2DOn[iDisplay] = false;
1604	return false;
1605	default:
1606	pData->rc = VERR_INVALID_STATE;
1607	return false;
1608	}
1609	}
1610	#endif /* #ifdef VBOX_WITH_VIDEOHWACCEL */
1611
1612	int vboxVBVASaveDevStateExec (PVGASTATE pVGAState, PSSMHANDLE pSSM)
1613	{
1614	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
1615	int rc = HGSMIHostSaveStateExec (pIns, pSSM);
1616	if (RT_SUCCESS(rc))
1617	{
1618	VGA_SAVED_STATE_PUT_MARKER(pSSM, 2);
1619
1620	/* Save VBVACONTEXT. */
1621	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pIns);
1622
1623	if (!pCtx)
1624	{
1625	AssertFailed();
1626
1627	/* Still write a valid value to the SSM. */
1628	rc = SSMR3PutU32 (pSSM, 0);
1629	AssertRCReturn(rc, rc);
1630	}
1631	else
1632	{
1633	#ifdef DEBUG_sunlover
1634	dumpctx(pCtx);
1635	#endif
1636
1637	rc = SSMR3PutU32 (pSSM, pCtx->cViews);
1638	AssertRCReturn(rc, rc);
1639
1640	uint32_t iView;
1641	for (iView = 0; iView < pCtx->cViews; iView++)
1642	{
1643	VBVAVIEW *pView = &pCtx->aViews[iView];
1644
1645	rc = SSMR3PutU32 (pSSM, pView->view.u32ViewIndex);
1646	AssertRCReturn(rc, rc);
1647	rc = SSMR3PutU32 (pSSM, pView->view.u32ViewOffset);
1648	AssertRCReturn(rc, rc);
1649	rc = SSMR3PutU32 (pSSM, pView->view.u32ViewSize);
1650	AssertRCReturn(rc, rc);
1651	rc = SSMR3PutU32 (pSSM, pView->view.u32MaxScreenSize);
1652	AssertRCReturn(rc, rc);
1653
1654	rc = SSMR3PutU32 (pSSM, pView->screen.u32ViewIndex);
1655	AssertRCReturn(rc, rc);
1656	rc = SSMR3PutS32 (pSSM, pView->screen.i32OriginX);
1657	AssertRCReturn(rc, rc);
1658	rc = SSMR3PutS32 (pSSM, pView->screen.i32OriginY);
1659	AssertRCReturn(rc, rc);
1660	rc = SSMR3PutU32 (pSSM, pView->screen.u32StartOffset);
1661	AssertRCReturn(rc, rc);
1662	rc = SSMR3PutU32 (pSSM, pView->screen.u32LineSize);
1663	AssertRCReturn(rc, rc);
1664	rc = SSMR3PutU32 (pSSM, pView->screen.u32Width);
1665	AssertRCReturn(rc, rc);
1666	rc = SSMR3PutU32 (pSSM, pView->screen.u32Height);
1667	AssertRCReturn(rc, rc);
1668	rc = SSMR3PutU16 (pSSM, pView->screen.u16BitsPerPixel);
1669	AssertRCReturn(rc, rc);
1670	rc = SSMR3PutU16 (pSSM, pView->screen.u16Flags);
1671	AssertRCReturn(rc, rc);
1672
1673	rc = SSMR3PutU32 (pSSM, pView->vbva.guest.pVBVA? pView->vbva.u32VBVAOffset: HGSMIOFFSET_VOID);
1674	AssertRCReturn(rc, rc);
1675
1676	rc = SSMR3PutU32 (pSSM, pView->vbva.partialRecord.cb);
1677	AssertRCReturn(rc, rc);
1678
1679	if (pView->vbva.partialRecord.cb > 0)
1680	{
1681	rc = SSMR3PutMem (pSSM, pView->vbva.partialRecord.pu8, pView->vbva.partialRecord.cb);
1682	AssertRCReturn(rc, rc);
1683	}
1684	}
1685
1686	/* Save mouse pointer shape information. */
1687	rc = SSMR3PutBool (pSSM, pCtx->mouseShapeInfo.fSet);
1688	AssertRCReturn(rc, rc);
1689	rc = SSMR3PutBool (pSSM, pCtx->mouseShapeInfo.fVisible);
1690	AssertRCReturn(rc, rc);
1691	rc = SSMR3PutBool (pSSM, pCtx->mouseShapeInfo.fAlpha);
1692	AssertRCReturn(rc, rc);
1693	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.u32HotX);
1694	AssertRCReturn(rc, rc);
1695	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.u32HotY);
1696	AssertRCReturn(rc, rc);
1697	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.u32Width);
1698	AssertRCReturn(rc, rc);
1699	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.u32Height);
1700	AssertRCReturn(rc, rc);
1701	rc = SSMR3PutU32 (pSSM, pCtx->mouseShapeInfo.cbShape);
1702	AssertRCReturn(rc, rc);
1703	if (pCtx->mouseShapeInfo.cbShape)
1704	{
1705	rc = SSMR3PutMem (pSSM, pCtx->mouseShapeInfo.pu8Shape, pCtx->mouseShapeInfo.cbShape);
1706	AssertRCReturn(rc, rc);
1707	}
1708
1709	#ifdef VBOX_WITH_WDDM
1710	/* Size of some additional data. For future extensions. */
1711	rc = SSMR3PutU32 (pSSM, 4);
1712	AssertRCReturn(rc, rc);
1713	rc = SSMR3PutU32 (pSSM, pVGAState->fGuestCaps);
1714	AssertRCReturn(rc, rc);
1715	#else
1716	/* Size of some additional data. For future extensions. */
1717	rc = SSMR3PutU32 (pSSM, 0);
1718	AssertRCReturn(rc, rc);
1719	#endif
1720	rc = SSMR3PutU32 (pSSM, RT_ELEMENTS(pCtx->aModeHints));
1721	AssertRCReturn(rc, rc);
1722	rc = SSMR3PutU32 (pSSM, sizeof(VBVAMODEHINT));
1723	AssertRCReturn(rc, rc);
1724	for (unsigned i = 0; i < RT_ELEMENTS(pCtx->aModeHints); ++i)
1725	{
1726	rc = SSMR3PutMem (pSSM, &pCtx->aModeHints[i],
1727	sizeof(VBVAMODEHINT));
1728	AssertRCReturn(rc, rc);
1729	}
1730	}
1731	}
1732
1733	return rc;
1734	}
1735
1736	int vboxVBVASaveStateExec (PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1737	{
1738	PVGASTATE pVGAState = PDMINS_2_DATA(pDevIns, PVGASTATE);
1739	int rc;
1740	#ifdef VBOX_WITH_VIDEOHWACCEL
1741	VBOXVBVASAVEDSTATECBDATA VhwaData = {0};
1742	VhwaData.pSSM = pSSM;
1743	uint32_t cbCmd = sizeof (VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM); /* maximum cmd size */
1744	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN, 0, cbCmd);
1745	Assert(pCmd);
1746	if(pCmd)
1747	{
1748	vbvaVHWAHHPost (pVGAState, pCmd, NULL, vboxVBVASaveStateBeginPostCb, &VhwaData);
1749	rc = VhwaData.rc;
1750	AssertRC(rc);
1751	if (RT_SUCCESS(rc))
1752	{
1753	#endif
1754	rc = vboxVBVASaveDevStateExec (pVGAState, pSSM);
1755	AssertRC(rc);
1756	#ifdef VBOX_WITH_VIDEOHWACCEL
1757	if (RT_SUCCESS(rc))
1758	{
1759	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM, 0);
1760	VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM *pSave = VBOXVHWACMD_BODY_HOST_HEAP(pCmd, VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM);
1761	pSave->pSSM = pSSM;
1762	vbvaVHWAHHPost (pVGAState, pCmd, vboxVBVASaveStatePerformPreCb, NULL, &VhwaData);
1763	rc = VhwaData.rc;
1764	AssertRC(rc);
1765	if (RT_SUCCESS(rc))
1766	{
1767	rc = vbvaVHWACommandSavePending(pVGAState, pSSM);
1768	AssertRCReturn(rc, rc);
1769
1770	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND, 0);
1771	vbvaVHWAHHPost (pVGAState, pCmd, vboxVBVASaveStateEndPreCb, NULL, &VhwaData);
1772	rc = VhwaData.rc;
1773	AssertRC(rc);
1774	}
1775	}
1776	}
1777
1778	vbvaVHWAHHCommandRelease(pCmd);
1779	}
1780	else
1781	rc = VERR_OUT_OF_RESOURCES;
1782	#else
1783	if (RT_SUCCESS(rc))
1784	{
1785	for (uint32_t i = 0; i < pVGAState->cMonitors; ++i)
1786	{
1787	rc = SSMR3PutU32 (pSSM, VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC);
1788	AssertRCReturn(rc, rc);
1789	}
1790	}
1791
1792	/* no pending commands */
1793	SSMR3PutU32(pSSM, 0);
1794	#endif
1795	return rc;
1796	}
1797
1798	int vboxVBVALoadStateExec (PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion)
1799	{
1800	if (uVersion < VGA_SAVEDSTATE_VERSION_HGSMI)
1801	{
1802	/* Nothing was saved. */
1803	return VINF_SUCCESS;
1804	}
1805
1806	PVGASTATE pVGAState = PDMINS_2_DATA(pDevIns, PVGASTATE);
1807	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
1808	int rc = HGSMIHostLoadStateExec (pIns, pSSM, uVersion);
1809	if (RT_SUCCESS(rc))
1810	{
1811	VGA_SAVED_STATE_GET_MARKER_RETURN_ON_MISMATCH(pSSM, uVersion, 2);
1812
1813	/* Load VBVACONTEXT. */
1814	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pIns);
1815
1816	if (!pCtx)
1817	{
1818	/* This should not happen. */
1819	AssertFailed();
1820	rc = VERR_INVALID_PARAMETER;
1821	}
1822	else
1823	{
1824	uint32_t cViews = 0;
1825	rc = SSMR3GetU32 (pSSM, &cViews);
1826	AssertRCReturn(rc, rc);
1827
1828	uint32_t iView;
1829	for (iView = 0; iView < cViews; iView++)
1830	{
1831	VBVAVIEW *pView = &pCtx->aViews[iView];
1832
1833	rc = SSMR3GetU32 (pSSM, &pView->view.u32ViewIndex);
1834	AssertRCReturn(rc, rc);
1835	rc = SSMR3GetU32 (pSSM, &pView->view.u32ViewOffset);
1836	AssertRCReturn(rc, rc);
1837	rc = SSMR3GetU32 (pSSM, &pView->view.u32ViewSize);
1838	AssertRCReturn(rc, rc);
1839	rc = SSMR3GetU32 (pSSM, &pView->view.u32MaxScreenSize);
1840	AssertRCReturn(rc, rc);
1841
1842	rc = SSMR3GetU32 (pSSM, &pView->screen.u32ViewIndex);
1843	AssertRCReturn(rc, rc);
1844	rc = SSMR3GetS32 (pSSM, &pView->screen.i32OriginX);
1845	AssertRCReturn(rc, rc);
1846	rc = SSMR3GetS32 (pSSM, &pView->screen.i32OriginY);
1847	AssertRCReturn(rc, rc);
1848	rc = SSMR3GetU32 (pSSM, &pView->screen.u32StartOffset);
1849	AssertRCReturn(rc, rc);
1850	rc = SSMR3GetU32 (pSSM, &pView->screen.u32LineSize);
1851	AssertRCReturn(rc, rc);
1852	rc = SSMR3GetU32 (pSSM, &pView->screen.u32Width);
1853	AssertRCReturn(rc, rc);
1854	rc = SSMR3GetU32 (pSSM, &pView->screen.u32Height);
1855	AssertRCReturn(rc, rc);
1856	rc = SSMR3GetU16 (pSSM, &pView->screen.u16BitsPerPixel);
1857	AssertRCReturn(rc, rc);
1858	rc = SSMR3GetU16 (pSSM, &pView->screen.u16Flags);
1859	AssertRCReturn(rc, rc);
1860
1861	rc = SSMR3GetU32 (pSSM, &pView->vbva.u32VBVAOffset);
1862	AssertRCReturn(rc, rc);
1863
1864	rc = SSMR3GetU32 (pSSM, &pView->vbva.partialRecord.cb);
1865	AssertRCReturn(rc, rc);
1866
1867	if (pView->vbva.partialRecord.cb == 0)
1868	{
1869	pView->vbva.partialRecord.pu8 = NULL;
1870	}
1871	else
1872	{
1873	Assert(pView->vbva.partialRecord.pu8 == NULL); /* Should be it. */
1874
1875	uint8_t pu8 = (uint8_t )RTMemAlloc(pView->vbva.partialRecord.cb);
1876
1877	if (!pu8)
1878	{
1879	return VERR_NO_MEMORY;
1880	}
1881
1882	pView->vbva.partialRecord.pu8 = pu8;
1883
1884	rc = SSMR3GetMem (pSSM, pView->vbva.partialRecord.pu8, pView->vbva.partialRecord.cb);
1885	AssertRCReturn(rc, rc);
1886	}
1887
1888	if (pView->vbva.u32VBVAOffset == HGSMIOFFSET_VOID)
1889	{
1890	pView->vbva.guest.pVBVA = NULL;
1891	}
1892	else
1893	{
1894	pView->vbva.guest.pVBVA = (VBVABUFFER *)HGSMIOffsetToPointerHost(pIns, pView->vbva.u32VBVAOffset);
1895	}
1896	}
1897
1898	if (uVersion > VGA_SAVEDSTATE_VERSION_WITH_CONFIG)
1899	{
1900	/* Read mouse pointer shape information. */
1901	rc = SSMR3GetBool (pSSM, &pCtx->mouseShapeInfo.fSet);
1902	AssertRCReturn(rc, rc);
1903	rc = SSMR3GetBool (pSSM, &pCtx->mouseShapeInfo.fVisible);
1904	AssertRCReturn(rc, rc);
1905	rc = SSMR3GetBool (pSSM, &pCtx->mouseShapeInfo.fAlpha);
1906	AssertRCReturn(rc, rc);
1907	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.u32HotX);
1908	AssertRCReturn(rc, rc);
1909	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.u32HotY);
1910	AssertRCReturn(rc, rc);
1911	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.u32Width);
1912	AssertRCReturn(rc, rc);
1913	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.u32Height);
1914	AssertRCReturn(rc, rc);
1915	rc = SSMR3GetU32 (pSSM, &pCtx->mouseShapeInfo.cbShape);
1916	AssertRCReturn(rc, rc);
1917	if (pCtx->mouseShapeInfo.cbShape)
1918	{
1919	pCtx->mouseShapeInfo.pu8Shape = (uint8_t *)RTMemAlloc(pCtx->mouseShapeInfo.cbShape);
1920	if (pCtx->mouseShapeInfo.pu8Shape == NULL)
1921	{
1922	return VERR_NO_MEMORY;
1923	}
1924	pCtx->mouseShapeInfo.cbAllocated = pCtx->mouseShapeInfo.cbShape;
1925	rc = SSMR3GetMem (pSSM, pCtx->mouseShapeInfo.pu8Shape, pCtx->mouseShapeInfo.cbShape);
1926	AssertRCReturn(rc, rc);
1927	}
1928	else
1929	{
1930	pCtx->mouseShapeInfo.pu8Shape = NULL;
1931	}
1932
1933	/* Size of some additional data. For future extensions. */
1934	uint32_t cbExtra = 0;
1935	rc = SSMR3GetU32 (pSSM, &cbExtra);
1936	AssertRCReturn(rc, rc);
1937	#ifdef VBOX_WITH_WDDM
1938	if (cbExtra >= 4)
1939	{
1940	rc = SSMR3GetU32 (pSSM, &pVGAState->fGuestCaps);
1941	AssertRCReturn(rc, rc);
1942	pVGAState->pDrv->pfnVBVAGuestCapabilityUpdate(pVGAState->pDrv, pVGAState->fGuestCaps);
1943	cbExtra -= 4;
1944	}
1945	#endif
1946	if (cbExtra > 0)
1947	{
1948	rc = SSMR3Skip(pSSM, cbExtra);
1949	AssertRCReturn(rc, rc);
1950	}
1951
1952	if (uVersion >= VGA_SAVEDSTATE_VERSION_MODE_HINTS)
1953	{
1954	uint32_t cModeHints, cbModeHints;
1955	rc = SSMR3GetU32 (pSSM, &cModeHints);
1956	AssertRCReturn(rc, rc);
1957	rc = SSMR3GetU32 (pSSM, &cbModeHints);
1958	AssertRCReturn(rc, rc);
1959	memset(&pCtx->aModeHints, ~0, sizeof(pCtx->aModeHints));
1960	unsigned iHint;
1961	for (iHint = 0; iHint < cModeHints; ++iHint)
1962	{
1963	if ( cbModeHints <= sizeof(VBVAMODEHINT)
1964	&& iHint < RT_ELEMENTS(pCtx->aModeHints))
1965	rc = SSMR3GetMem(pSSM, &pCtx->aModeHints[iHint],
1966	cbModeHints);
1967	else
1968	rc = SSMR3Skip(pSSM, cbModeHints);
1969	AssertRCReturn(rc, rc);
1970	}
1971	}
1972	}
1973
1974	pCtx->cViews = iView;
1975	LogFlowFunc(("%d views loaded\n", pCtx->cViews));
1976
1977	if (uVersion > VGA_SAVEDSTATE_VERSION_WDDM)
1978	{
1979	bool fLoadCommands;
1980
1981	if (uVersion < VGA_SAVEDSTATE_VERSION_FIXED_PENDVHWA)
1982	{
1983	const char *pcszOsArch = SSMR3HandleHostOSAndArch(pSSM);
1984	Assert(pcszOsArch);
1985	fLoadCommands = !pcszOsArch \|\| RTStrNCmp(pcszOsArch, RT_STR_TUPLE("solaris"));
1986	}
1987	else
1988	fLoadCommands = true;
1989
1990	#ifdef VBOX_WITH_VIDEOHWACCEL
1991	uint32_t cbCmd = sizeof (VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM); /* maximum cmd size */
1992	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM, 0, cbCmd);
1993	Assert(pCmd);
1994	if(pCmd)
1995	{
1996	VBOXVBVASAVEDSTATECBDATA VhwaData = {0};
1997	VhwaData.pSSM = pSSM;
1998	VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM *pLoad = VBOXVHWACMD_BODY_HOST_HEAP(pCmd, VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM);
1999	pLoad->pSSM = pSSM;
2000	vbvaVHWAHHPost (pVGAState, pCmd, vboxVBVALoadStatePerformPreCb, vboxVBVALoadStatePerformPostCb, &VhwaData);
2001	rc = VhwaData.rc;
2002	vbvaVHWAHHCommandRelease(pCmd);
2003	AssertRCReturn(rc, rc);
2004
2005	if (fLoadCommands)
2006	{
2007	rc = vbvaVHWACommandLoadPending(pVGAState, pSSM, uVersion);
2008	AssertRCReturn(rc, rc);
2009	}
2010	}
2011	else
2012	{
2013	rc = VERR_OUT_OF_RESOURCES;
2014	}
2015	#else
2016	uint32_t u32;
2017
2018	for (uint32_t i = 0; i < pVGAState->cMonitors; ++i)
2019	{
2020	rc = SSMR3GetU32(pSSM, &u32);
2021	AssertRCReturn(rc, rc);
2022
2023	if (u32 != VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC)
2024	{
2025	LogRel(("VBVA: 2D data while 2D is not supported\n"));
2026	return VERR_NOT_SUPPORTED;
2027	}
2028	}
2029
2030	if (fLoadCommands)
2031	{
2032	rc = SSMR3GetU32(pSSM, &u32);
2033	AssertRCReturn(rc, rc);
2034
2035	if (u32)
2036	{
2037	LogRel(("VBVA: 2D pending command while 2D is not supported\n"));
2038	return VERR_NOT_SUPPORTED;
2039	}
2040	}
2041	#endif
2042	}
2043
2044	#ifdef DEBUG_sunlover
2045	dumpctx(pCtx);
2046	#endif
2047	}
2048	}
2049
2050	return rc;
2051	}
2052
2053	int vboxVBVALoadStateDone(PPDMDEVINS pDevIns)
2054	{
2055	PVGASTATE pVGAState = PDMINS_2_DATA(pDevIns, PVGASTATE);
2056	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2057	if (pCtx)
2058	{
2059	uint32_t iView;
2060	for (iView = 0; iView < pCtx->cViews; iView++)
2061	{
2062	VBVAVIEW *pView = &pCtx->aViews[iView];
2063	if (pView->vbva.guest.pVBVA)
2064	{
2065	#ifdef VBOX_WITH_CRHGSMI
2066	Assert(!vboxCmdVBVAIsEnabled(pVGAState));
2067	#endif
2068	int rc = vbvaEnable(iView, pVGAState, pCtx, pView->vbva.guest.pVBVA, pView->vbva.u32VBVAOffset, true /* fRestored */);
2069	if (RT_SUCCESS(rc))
2070	vbvaResize(pVGAState, pView, &pView->screen, false);
2071	else
2072	LogRel(("VBVA: can not restore: %Rrc\n", rc));
2073	}
2074	}
2075
2076	if (pCtx->mouseShapeInfo.fSet)
2077	vbvaUpdateMousePointerShape(pVGAState, &pCtx->mouseShapeInfo, true);
2078	}
2079
2080	return VINF_SUCCESS;
2081	}
2082
2083	void VBVARaiseIrq (PVGASTATE pVGAState, uint32_t fFlags)
2084	{
2085	PPDMDEVINS pDevIns = pVGAState->pDevInsR3;
2086
2087	PDMCritSectEnter(&pVGAState->CritSectIRQ, VERR_SEM_BUSY);
2088
2089	const uint32_t fu32CurrentGuestFlags = HGSMIGetHostGuestFlags(pVGAState->pHGSMI);
2090	if ((fu32CurrentGuestFlags & HGSMIHOSTFLAGS_IRQ) == 0)
2091	{
2092	/* No IRQ set yet. */
2093	Assert(pVGAState->fu32PendingGuestFlags == 0);
2094
2095	HGSMISetHostGuestFlags(pVGAState->pHGSMI, HGSMIHOSTFLAGS_IRQ \| fFlags);
2096
2097	/* If VM is not running, the IRQ will be set in VBVAOnResume. */
2098	const VMSTATE enmVMState = PDMDevHlpVMState(pDevIns);
2099	if ( enmVMState == VMSTATE_RUNNING
2100	\|\| enmVMState == VMSTATE_RUNNING_LS)
2101	PDMDevHlpPCISetIrqNoWait(pDevIns, 0, PDM_IRQ_LEVEL_HIGH);
2102	}
2103	else
2104	{
2105	/* IRQ already set, remember the new flags. */
2106	pVGAState->fu32PendingGuestFlags \|= HGSMIHOSTFLAGS_IRQ \| fFlags;
2107	}
2108
2109	PDMCritSectLeave(&pVGAState->CritSectIRQ);
2110	}
2111
2112	void VBVAOnResume(PVGASTATE pThis)
2113	{
2114	PPDMDEVINS pDevIns = pThis->pDevInsR3;
2115
2116	PDMCritSectEnter(&pThis->CritSectIRQ, VERR_SEM_BUSY);
2117
2118	if (HGSMIGetHostGuestFlags(pThis->pHGSMI) & HGSMIHOSTFLAGS_IRQ)
2119	PDMDevHlpPCISetIrqNoWait(pDevIns, 0, PDM_IRQ_LEVEL_HIGH);
2120
2121	PDMCritSectLeave(&pThis->CritSectIRQ);
2122	}
2123
2124	static int vbvaHandleQueryConf32(PVGASTATE pVGAState, VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *pConf32)
2125	{
2126	uint32_t const idxQuery = pConf32->u32Index;
2127	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2128	LogFlowFunc(("VBVA_QUERY_CONF32: u32Index %d, u32Value 0x%x\n", idxQuery, pConf32->u32Value));
2129
2130	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2131	uint32_t uValue;
2132	if (idxQuery == VBOX_VBVA_CONF32_MONITOR_COUNT)
2133	uValue = pCtx->cViews;
2134	else if (idxQuery == VBOX_VBVA_CONF32_HOST_HEAP_SIZE)
2135	uValue = _64K; /** @todo a value calculated from the vram size */
2136	else if ( idxQuery == VBOX_VBVA_CONF32_MODE_HINT_REPORTING
2137	\|\| idxQuery == VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING)
2138	uValue = VINF_SUCCESS;
2139	else if (idxQuery == VBOX_VBVA_CONF32_CURSOR_CAPABILITIES)
2140	uValue = pVGAState->fHostCursorCapabilities;
2141	else if (idxQuery == VBOX_VBVA_CONF32_SCREEN_FLAGS)
2142	uValue = VBVA_SCREEN_F_ACTIVE
2143	\| VBVA_SCREEN_F_DISABLED
2144	\| VBVA_SCREEN_F_BLANK
2145	\| VBVA_SCREEN_F_BLANK2;
2146	else if (idxQuery == VBOX_VBVA_CONF32_MAX_RECORD_SIZE)
2147	uValue = VBVA_MAX_RECORD_SIZE;
2148	else if (idxQuery == UINT32_MAX)
2149	uValue = UINT32_MAX; /* Older GA uses this for sanity checking. See testQueryConf in HGSMIBase.cpp on branches. */
2150	else
2151	ASSERT_GUEST_MSG_FAILED_RETURN(("Invalid index %#x\n", idxQuery), VERR_INVALID_PARAMETER);
2152
2153	pConf32->u32Value = uValue;
2154	return VINF_SUCCESS;
2155	}
2156
2157	static int vbvaHandleSetConf32(VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *pConf32)
2158	{
2159	uint32_t const idxQuery = pConf32->u32Index;
2160	uint32_t const uValue = pConf32->u32Value;
2161	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2162	LogFlowFunc(("VBVA_SET_CONF32: u32Index %d, u32Value 0x%x\n", idxQuery, uValue));
2163
2164	if (idxQuery == VBOX_VBVA_CONF32_MONITOR_COUNT)
2165	{ /* do nothing. this is a const. */ }
2166	else if (idxQuery == VBOX_VBVA_CONF32_HOST_HEAP_SIZE)
2167	{ /* do nothing. this is a const. */ }
2168	else
2169	ASSERT_GUEST_MSG_FAILED_RETURN(("Invalid index %#x (value=%u)\n", idxQuery, uValue), VERR_INVALID_PARAMETER);
2170
2171	RT_NOREF_PV(uValue);
2172	return VINF_SUCCESS;
2173	}
2174
2175	static int vbvaHandleInfoHeap(PVGASTATE pVGAState, const VBVAINFOHEAP RT_UNTRUSTED_VOLATILE_GUEST *pInfoHeap)
2176	{
2177	uint32_t const offHeap = pInfoHeap->u32HeapOffset;
2178	uint32_t const cbHeap = pInfoHeap->u32HeapSize;
2179	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2180	LogFlowFunc(("VBVA_INFO_HEAP: offset 0x%x, size 0x%x\n", offHeap, cbHeap));
2181
2182	return HGSMIHostHeapSetup(pVGAState->pHGSMI, offHeap, cbHeap);
2183	}
2184
2185	int VBVAInfoView(PVGASTATE pVGAState, const VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_GUEST *pView)
2186	{
2187	VBVAINFOVIEW view;
2188	RT_COPY_VOLATILE(view, *pView);
2189	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2190
2191	LogFlowFunc(("VBVA_INFO_VIEW: u32ViewIndex %d, u32ViewOffset 0x%x, u32ViewSize 0x%x, u32MaxScreenSize 0x%x\n",
2192	view.u32ViewIndex, view.u32ViewOffset, view.u32ViewSize, view.u32MaxScreenSize));
2193
2194	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2195	ASSERT_GUEST_LOGREL_MSG_RETURN( view.u32ViewIndex < pCtx->cViews
2196	&& view.u32ViewOffset <= pVGAState->vram_size
2197	&& view.u32ViewSize <= pVGAState->vram_size
2198	&& view.u32ViewOffset <= pVGAState->vram_size - view.u32ViewSize
2199	&& view.u32MaxScreenSize <= view.u32ViewSize,
2200	("index %d(%d), offset 0x%x, size 0x%x, max 0x%x, vram size 0x%x\n",
2201	view.u32ViewIndex, pCtx->cViews, view.u32ViewOffset, view.u32ViewSize,
2202	view.u32MaxScreenSize, pVGAState->vram_size),
2203	VERR_INVALID_PARAMETER);
2204	RT_UNTRUSTED_VALIDATED_FENCE();
2205
2206	pCtx->aViews[view.u32ViewIndex].view = view;
2207	return VINF_SUCCESS;
2208	}
2209
2210	int VBVAInfoScreen(PVGASTATE pVGAState, const VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_GUEST *pScreen)
2211	{
2212	/*
2213	* Copy input into non-volatile buffer.
2214	*/
2215	VBVAINFOSCREEN screen;
2216	RT_COPY_VOLATILE(screen, *pScreen);
2217	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2218	LogRel(("VBVA: InfoScreen: [%d] @%d,%d %dx%d, line 0x%x, BPP %d, flags 0x%x\n",
2219	screen.u32ViewIndex, screen.i32OriginX, screen.i32OriginY,
2220	screen.u32Width, screen.u32Height,
2221	screen.u32LineSize, screen.u16BitsPerPixel, screen.u16Flags));
2222
2223	/*
2224	* Validate input.
2225	*/
2226	/* Allow screen.u16BitsPerPixel == 0 because legacy guest code used it for screen blanking. */
2227	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2228	ASSERT_GUEST_LOGREL_MSG_RETURN(screen.u32ViewIndex < pCtx->cViews,
2229	("Screen index %#x is out of bound (cViews=%#x)\n", screen.u32ViewIndex, pCtx->cViews),
2230	VERR_INVALID_PARAMETER);
2231	ASSERT_GUEST_LOGREL_MSG_RETURN( screen.u16BitsPerPixel <= 32
2232	&& screen.u32Width <= UINT16_MAX
2233	&& screen.u32Height <= UINT16_MAX
2234	&& screen.u32LineSize <= UINT16_MAX * UINT32_C(4),
2235	("One or more values out of range: u16BitsPerPixel=%#x u32Width=%#x u32Height=%#x u32LineSize=%#x\n",
2236	screen.u16BitsPerPixel, screen.u32Width, screen.u32Height, screen.u32LineSize),
2237	VERR_INVALID_PARAMETER);
2238	RT_UNTRUSTED_VALIDATED_FENCE();
2239
2240	const VBVAINFOVIEW *pView = &pCtx->aViews[screen.u32ViewIndex].view;
2241	const uint32_t cbPerPixel = (screen.u16BitsPerPixel + 7) / 8;
2242	ASSERT_GUEST_LOGREL_MSG_RETURN(screen.u32Width <= screen.u32LineSize / (cbPerPixel ? cbPerPixel : 1),
2243	("u32Width=%#x u32LineSize=%3x cbPerPixel=%#x\n",
2244	screen.u32Width, screen.u32LineSize, cbPerPixel),
2245	VERR_INVALID_PARAMETER);
2246
2247	const uint64_t u64ScreenSize = (uint64_t)screen.u32LineSize * screen.u32Height;
2248
2249	ASSERT_GUEST_LOGREL_MSG_RETURN( screen.u32StartOffset <= pView->u32ViewSize
2250	&& u64ScreenSize <= pView->u32MaxScreenSize
2251	&& screen.u32StartOffset <= pView->u32ViewSize - (uint32_t)u64ScreenSize,
2252	("u32StartOffset=%#x u32ViewSize=%#x u64ScreenSize=%#RX64 u32MaxScreenSize=%#x\n",
2253	screen.u32StartOffset, pView->u32ViewSize, u64ScreenSize, pView->u32MaxScreenSize),
2254	VERR_INVALID_PARAMETER);
2255	RT_UNTRUSTED_VALIDATED_FENCE();
2256
2257	/*
2258	* Do the job.
2259	*/
2260	vbvaResize(pVGAState, &pCtx->aViews[screen.u32ViewIndex], &screen, true);
2261	return VINF_SUCCESS;
2262	}
2263
2264	int VBVAGetInfoViewAndScreen(PVGASTATE pVGAState, uint32_t u32ViewIndex, VBVAINFOVIEW pView, VBVAINFOSCREEN pScreen)
2265	{
2266	if (u32ViewIndex >= pVGAState->cMonitors)
2267	return VERR_INVALID_PARAMETER;
2268
2269	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
2270	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pIns);
2271
2272	if (pView)
2273	*pView = pCtx->aViews[u32ViewIndex].view;
2274
2275	if (pScreen)
2276	*pScreen = pCtx->aViews[u32ViewIndex].screen;
2277
2278	return VINF_SUCCESS;
2279	}
2280
2281	static int vbvaHandleEnable(PVGASTATE pVGAState, uint32_t fEnableFlags, uint32_t offEnable, uint32_t idScreen)
2282	{
2283	LogFlowFunc(("VBVA_ENABLE[%u]: fEnableFlags=0x%x offEnable=%#x\n", idScreen, fEnableFlags, offEnable));
2284	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
2285	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pIns);
2286
2287	/*
2288	* Validate input.
2289	*/
2290	ASSERT_GUEST_LOGREL_MSG_RETURN(idScreen < pCtx->cViews, ("idScreen=%#x cViews=%#x\n", idScreen, pCtx->cViews), VERR_INVALID_PARAMETER);
2291	ASSERT_GUEST_LOGREL_MSG_RETURN( (fEnableFlags & (VBVA_F_ENABLE \| VBVA_F_DISABLE)) == VBVA_F_ENABLE
2292	\|\| (fEnableFlags & (VBVA_F_ENABLE \| VBVA_F_DISABLE)) == VBVA_F_DISABLE,
2293	("fEnableFlags=%#x\n", fEnableFlags),
2294	VERR_INVALID_PARAMETER);
2295	if (fEnableFlags & VBVA_F_ENABLE)
2296	{
2297	ASSERT_GUEST_LOGREL_MSG_RETURN(offEnable < pVGAState->vram_size,
2298	("offEnable=%#x vram_size=%#x\n", offEnable, pVGAState->vram_size),
2299	VERR_INVALID_PARAMETER);
2300	if (fEnableFlags & VBVA_F_ABSOFFSET)
2301	/* Offset from VRAM start. */
2302	ASSERT_GUEST_LOGREL_MSG_RETURN( pVGAState->vram_size >= RT_UOFFSETOF(VBVABUFFER, au8Data)
2303	&& offEnable <= pVGAState->vram_size - RT_UOFFSETOF(VBVABUFFER, au8Data),
2304	("offEnable=%#x vram_size=%#x\n", offEnable, pVGAState->vram_size),
2305	VERR_INVALID_PARAMETER);
2306	else
2307	{
2308	/* Offset from the view start. We'd be using idScreen here to fence required. */
2309	RT_UNTRUSTED_VALIDATED_FENCE();
2310	const VBVAINFOVIEW *pView = &pCtx->aViews[idScreen].view;
2311	ASSERT_GUEST_LOGREL_MSG_RETURN( pVGAState->vram_size - offEnable >= pView->u32ViewOffset
2312	&& pView->u32ViewSize >= RT_UOFFSETOF(VBVABUFFER, au8Data)
2313	&& offEnable <= pView->u32ViewSize - RT_UOFFSETOF(VBVABUFFER, au8Data),
2314	("offEnable=%#x vram_size=%#x view: %#x LB %#x\n",
2315	offEnable, pVGAState->vram_size, pView->u32ViewOffset, pView->u32ViewSize),
2316	VERR_INVALID_PARAMETER);
2317	offEnable += pView->u32ViewOffset;
2318	}
2319	ASSERT_GUEST_LOGREL_MSG_RETURN(HGSMIIsOffsetValid(pIns, offEnable),
2320	("offEnable=%#x area %#x LB %#x\n",
2321	offEnable, HGSMIGetAreaOffset(pIns), HGSMIGetAreaSize(pIns)),
2322	VERR_INVALID_PARAMETER);
2323	}
2324	RT_UNTRUSTED_VALIDATED_FENCE();
2325
2326	/*
2327	* Execute.
2328	*/
2329	int rc = VINF_SUCCESS;
2330	if (fEnableFlags & VBVA_F_ENABLE)
2331	{
2332	VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST *pVBVA
2333	= (VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST *)HGSMIOffsetToPointerHost(pIns, offEnable);
2334	ASSERT_GUEST_LOGREL_RETURN(pVBVA, VERR_INVALID_PARAMETER); /* already check above, but let's be careful. */
2335
2336	/* Process any pending orders and empty the VBVA ring buffer. */
2337	vbvaFlush(pVGAState, pCtx);
2338
2339	rc = vbvaEnable(idScreen, pVGAState, pCtx, pVBVA, offEnable, false /* fRestored */);
2340	if (RT_FAILURE(rc))
2341	LogRelMax(8, ("VBVA: can not enable: %Rrc\n", rc));
2342	}
2343	else
2344	rc = vbvaDisable(idScreen, pVGAState, pCtx);
2345	return rc;
2346	}
2347
2348	static int vbvaHandleQueryModeHints(PVGASTATE pVGAState, VBVAQUERYMODEHINTS volatile *pQueryModeHints, HGSMISIZE cbBuffer)
2349	{
2350	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
2351	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pIns);
2352
2353	/*
2354	* Copy and validate the request.
2355	*/
2356	uint16_t const cHintsQueried = pQueryModeHints->cHintsQueried;
2357	uint16_t const cbHintStructureGuest = pQueryModeHints->cbHintStructureGuest;
2358	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2359
2360	LogRelFlowFunc(("VBVA: HandleQueryModeHints: cHintsQueried=%RU16, cbHintStructureGuest=%RU16\n",
2361	cHintsQueried, cbHintStructureGuest));
2362	ASSERT_GUEST_RETURN(cbBuffer >= sizeof(VBVAQUERYMODEHINTS) + (uint32_t)cHintsQueried * cbHintStructureGuest,
2363	VERR_INVALID_PARAMETER);
2364	RT_UNTRUSTED_VALIDATED_FENCE();
2365
2366	/*
2367	* Produce the requested data.
2368	*/
2369	uint8_t pbHint = (uint8_t )(pQueryModeHints + 1);
2370	memset(pbHint, ~0, cbBuffer - sizeof(VBVAQUERYMODEHINTS));
2371
2372	for (unsigned iHint = 0; iHint < cHintsQueried && iHint < VBOX_VIDEO_MAX_SCREENS; ++iHint)
2373	{
2374	memcpy(pbHint, &pCtx->aModeHints[iHint], RT_MIN(cbHintStructureGuest, sizeof(VBVAMODEHINT)));
2375	pbHint += cbHintStructureGuest;
2376	Assert((uintptr_t)(pbHint - (uint8_t *)pQueryModeHints) <= cbBuffer);
2377	}
2378
2379	return VINF_SUCCESS;
2380	}
2381
2382	/*
2383	*
2384	* New VBVA uses a new interface id: #define VBE_DISPI_ID_VBOX_VIDEO 0xBE01
2385	*
2386	* VBVA uses two 32 bits IO ports to write VRAM offsets of shared memory blocks for commands.
2387	* Read Write
2388	* Host port 0x3b0 to process completed
2389	* Guest port 0x3d0 control value? to process
2390	*
2391	*/
2392
2393	static DECLCALLBACK(void) vbvaNotifyGuest (void *pvCallback)
2394	{
2395	#if defined(VBOX_WITH_HGSMI) && (defined(VBOX_WITH_VIDEOHWACCEL) \|\| defined(VBOX_WITH_VDMA) \|\| defined(VBOX_WITH_WDDM))
2396	PVGASTATE pVGAState = (PVGASTATE)pvCallback;
2397	VBVARaiseIrq (pVGAState, 0);
2398	#else
2399	NOREF(pvCallback);
2400	/* Do nothing. Later the VMMDev/VGA IRQ can be used for the notification. */
2401	#endif
2402	}
2403
2404	/**
2405	* The guest submitted a command buffer (hit VGA_PORT_HGSMI_GUEST).
2406	*
2407	* Verify the buffer size and invoke corresponding handler.
2408	*
2409	* @return VBox status code.
2410	* @param pvHandler The VBVA channel context.
2411	* @param u16ChannelInfo Command code.
2412	* @param pvBuffer HGSMI buffer with command data. Considered volatile!
2413	* @param cbBuffer Size of command data.
2414	*
2415	* @thread EMT
2416	*/
2417	static DECLCALLBACK(int) vbvaChannelHandler(void *pvHandler, uint16_t u16ChannelInfo,
2418	void RT_UNTRUSTED_VOLATILE_GUEST *pvBuffer, HGSMISIZE cbBuffer)
2419	{
2420	int rc = VINF_SUCCESS;
2421
2422	LogFlowFunc(("pvHandler %p, u16ChannelInfo %d, pvBuffer %p, cbBuffer %u\n", pvHandler, u16ChannelInfo, pvBuffer, cbBuffer));
2423
2424	PVGASTATE pVGAState = (PVGASTATE)pvHandler;
2425	PHGSMIINSTANCE pIns = pVGAState->pHGSMI;
2426	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pIns);
2427
2428	switch (u16ChannelInfo)
2429	{
2430	#ifdef VBOX_WITH_CRHGSMI
2431	case VBVA_CMDVBVA_SUBMIT:
2432	rc = vboxCmdVBVACmdSubmit(pVGAState);
2433	break;
2434
2435	case VBVA_CMDVBVA_FLUSH:
2436	rc = vboxCmdVBVACmdFlush(pVGAState);
2437	break;
2438
2439	case VBVA_CMDVBVA_CTL:
2440	if (cbBuffer >= VBoxSHGSMIBufferHeaderSize() + sizeof(VBOXCMDVBVA_CTL))
2441	{
2442	VBOXCMDVBVA_CTL RT_UNTRUSTED_VOLATILE_GUEST *pCtl
2443	= (VBOXCMDVBVA_CTL RT_UNTRUSTED_VOLATILE_GUEST )VBoxSHGSMIBufferData((VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer);
2444	rc = vboxCmdVBVACmdCtl(pVGAState, pCtl, cbBuffer - VBoxSHGSMIBufferHeaderSize());
2445	}
2446	else
2447	rc = VERR_INVALID_PARAMETER;
2448	break;
2449	#endif /* VBOX_WITH_CRHGSMI */
2450
2451	#ifdef VBOX_WITH_VDMA
2452	case VBVA_VDMA_CMD:
2453	if (cbBuffer >= VBoxSHGSMIBufferHeaderSize() + sizeof(VBOXVDMACBUF_DR))
2454	{
2455	VBOXVDMACBUF_DR RT_UNTRUSTED_VOLATILE_GUEST *pCmd
2456	= (VBOXVDMACBUF_DR RT_UNTRUSTED_VOLATILE_GUEST )VBoxSHGSMIBufferData((VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer);
2457	vboxVDMACommand(pVGAState->pVdma, pCmd, cbBuffer - VBoxSHGSMIBufferHeaderSize());
2458	rc = VINF_SUCCESS;
2459	}
2460	else
2461	rc = VERR_INVALID_PARAMETER;
2462	break;
2463
2464	case VBVA_VDMA_CTL:
2465	if (cbBuffer >= VBoxSHGSMIBufferHeaderSize() + sizeof(VBOXVDMA_CTL))
2466	{
2467	VBOXVDMA_CTL RT_UNTRUSTED_VOLATILE_GUEST *pCmd
2468	= (VBOXVDMA_CTL RT_UNTRUSTED_VOLATILE_GUEST )VBoxSHGSMIBufferData((VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer);
2469	vboxVDMAControl(pVGAState->pVdma, pCmd, cbBuffer - VBoxSHGSMIBufferHeaderSize());
2470	}
2471	else
2472	rc = VERR_INVALID_PARAMETER;
2473	break;
2474	#endif /* VBOX_WITH_VDMA */
2475
2476	case VBVA_QUERY_CONF32:
2477	if (cbBuffer >= sizeof(VBVACONF32))
2478	rc = vbvaHandleQueryConf32(pVGAState, (VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2479	else
2480	rc = VERR_INVALID_PARAMETER;
2481	break;
2482
2483	case VBVA_SET_CONF32:
2484	if (cbBuffer >= sizeof(VBVACONF32))
2485	rc = vbvaHandleSetConf32((VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2486	else
2487	rc = VERR_INVALID_PARAMETER;
2488	break;
2489
2490	case VBVA_INFO_VIEW:
2491	/* Expect at least one VBVAINFOVIEW structure. */
2492	rc = VERR_INVALID_PARAMETER;
2493	if (cbBuffer >= sizeof(VBVAINFOVIEW))
2494	{
2495	#ifdef VBOX_WITH_CRHGSMI
2496	AssertMsgBreak(!vboxCmdVBVAIsEnabled(pVGAState), ("VBVA_INFO_VIEW is not acceptible for CmdVbva\n"));
2497	#endif
2498	/* Guest submits an array of VBVAINFOVIEW structures. */
2499	const VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_GUEST pView = (VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2500	for (;
2501	cbBuffer >= sizeof(VBVAINFOVIEW);
2502	++pView, cbBuffer -= sizeof(VBVAINFOVIEW))
2503	{
2504	rc = VBVAInfoView(pVGAState, pView);
2505	if (RT_FAILURE(rc))
2506	break;
2507	}
2508	}
2509	break;
2510
2511	case VBVA_INFO_HEAP:
2512	if (cbBuffer >= sizeof(VBVAINFOHEAP))
2513	rc = vbvaHandleInfoHeap(pVGAState, (VBVAINFOHEAP RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2514	else
2515	rc = VERR_INVALID_PARAMETER;
2516	break;
2517
2518	case VBVA_FLUSH:
2519	if (cbBuffer >= sizeof(VBVAFLUSH))
2520	rc = vbvaFlush(pVGAState, pCtx);
2521	else
2522	rc = VERR_INVALID_PARAMETER;
2523	break;
2524
2525	case VBVA_INFO_SCREEN:
2526	rc = VERR_INVALID_PARAMETER;
2527	#ifdef VBOX_WITH_CRHGSMI
2528	AssertMsgBreak(!vboxCmdVBVAIsEnabled(pVGAState), ("VBVA_INFO_SCREEN is not acceptible for CmdVbva\n"));
2529	#endif
2530	if (cbBuffer >= sizeof(VBVAINFOSCREEN))
2531	rc = VBVAInfoScreen(pVGAState, (VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2532	break;
2533
2534	case VBVA_ENABLE:
2535	rc = VERR_INVALID_PARAMETER;
2536	#ifdef VBOX_WITH_CRHGSMI
2537	AssertMsgBreak(!vboxCmdVBVAIsEnabled(pVGAState), ("VBVA_ENABLE is not acceptible for CmdVbva\n"));
2538	#endif /* VBOX_WITH_CRHGSMI */
2539	if (cbBuffer >= sizeof(VBVAENABLE))
2540	{
2541	VBVAENABLE RT_UNTRUSTED_VOLATILE_GUEST pVbvaEnable = (VBVAENABLE RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2542	uint32_t const fEnableFlags = pVbvaEnable->u32Flags;
2543	uint32_t const offEnable = pVbvaEnable->u32Offset;
2544	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2545
2546	uint32_t idScreen;
2547	if (fEnableFlags & VBVA_F_EXTENDED)
2548	{
2549	ASSERT_GUEST_STMT_BREAK(cbBuffer >= sizeof(VBVAENABLE_EX), rc = VERR_INVALID_PARAMETER);
2550	idScreen = ((VBVAENABLE_EX RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer)->u32ScreenId;
2551	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2552	}
2553	else
2554	idScreen = vbvaViewFromBufferPtr(pIns, pCtx, pvBuffer);
2555
2556	rc = vbvaHandleEnable(pVGAState, fEnableFlags, offEnable, idScreen);
2557	pVbvaEnable->i32Result = rc;
2558	}
2559	break;
2560
2561	case VBVA_MOUSE_POINTER_SHAPE:
2562	if (cbBuffer >= sizeof(VBVAMOUSEPOINTERSHAPE))
2563	{
2564	VBVAMOUSEPOINTERSHAPE RT_UNTRUSTED_VOLATILE_GUEST *pShape
2565	= (VBVAMOUSEPOINTERSHAPE RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer;
2566	rc = vbvaMousePointerShape(pVGAState, pCtx, pShape, cbBuffer);
2567	pShape->i32Result = rc;
2568	}
2569	else
2570	rc = VERR_INVALID_PARAMETER;
2571	break;
2572
2573
2574	#ifdef VBOX_WITH_VIDEOHWACCEL
2575	case VBVA_VHWA_CMD:
2576	if (cbBuffer >= VBOXVHWACMD_HEADSIZE())
2577	{
2578	vbvaVHWAHandleCommand(pVGAState, (VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2579	rc = VINF_SUCCESS;
2580	}
2581	else
2582	rc = VERR_INVALID_PARAMETER;
2583	break;
2584	#endif
2585
2586	#ifdef VBOX_WITH_WDDM
2587	case VBVA_INFO_CAPS:
2588	if (cbBuffer >= sizeof(VBVACAPS))
2589	{
2590	VBVACAPS RT_UNTRUSTED_VOLATILE_GUEST pCaps = (VBVACAPS RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2591	pVGAState->fGuestCaps = pCaps->fCaps;
2592	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2593
2594	pVGAState->pDrv->pfnVBVAGuestCapabilityUpdate(pVGAState->pDrv, pVGAState->fGuestCaps);
2595	pCaps->rc = rc = VINF_SUCCESS;
2596	}
2597	else
2598	rc = VERR_INVALID_PARAMETER;
2599	break;
2600	#endif
2601
2602	case VBVA_SCANLINE_CFG:
2603	if (cbBuffer >= sizeof(VBVASCANLINECFG))
2604	{
2605	VBVASCANLINECFG RT_UNTRUSTED_VOLATILE_GUEST pCfg = (VBVASCANLINECFG RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2606	pVGAState->fScanLineCfg = pCfg->fFlags;
2607	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2608
2609	pCfg->rc = rc = VINF_SUCCESS;
2610	}
2611	else
2612	rc = VERR_INVALID_PARAMETER;
2613	break;
2614
2615	case VBVA_QUERY_MODE_HINTS:
2616	if (cbBuffer >= sizeof(VBVAQUERYMODEHINTS))
2617	{
2618	VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_GUEST *pQueryModeHints
2619	= (VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer;
2620	rc = vbvaHandleQueryModeHints(pVGAState, pQueryModeHints, cbBuffer);
2621	pQueryModeHints->rc = rc;
2622	}
2623	else
2624	rc = VERR_INVALID_PARAMETER;
2625	break;
2626
2627	case VBVA_REPORT_INPUT_MAPPING:
2628	if (cbBuffer >= sizeof(VBVAREPORTINPUTMAPPING))
2629	{
2630	VBVAREPORTINPUTMAPPING inputMapping;
2631	{
2632	VBVAREPORTINPUTMAPPING RT_UNTRUSTED_VOLATILE_GUEST *pInputMapping
2633	= (VBVAREPORTINPUTMAPPING RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer;
2634	inputMapping.x = pInputMapping->x;
2635	inputMapping.y = pInputMapping->y;
2636	inputMapping.cx = pInputMapping->cx;
2637	inputMapping.cy = pInputMapping->cy;
2638	}
2639	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2640
2641	LogRelFlowFunc(("VBVA: ChannelHandler: VBVA_REPORT_INPUT_MAPPING: x=%RI32, y=%RI32, cx=%RU32, cy=%RU32\n",
2642	inputMapping.x, inputMapping.y, inputMapping.cx, inputMapping.cy));
2643	pVGAState->pDrv->pfnVBVAInputMappingUpdate(pVGAState->pDrv,
2644	inputMapping.x, inputMapping.y,
2645	inputMapping.cx, inputMapping.cy);
2646	rc = VINF_SUCCESS;
2647	}
2648	else
2649	rc = VERR_INVALID_PARAMETER;
2650	break;
2651
2652	case VBVA_CURSOR_POSITION:
2653	if (cbBuffer >= sizeof(VBVACURSORPOSITION))
2654	{
2655	VBVACURSORPOSITION RT_UNTRUSTED_VOLATILE_GUEST pReport = (VBVACURSORPOSITION RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2656	VBVACURSORPOSITION Report;
2657	Report.fReportPosition = pReport->fReportPosition;
2658	Report.x = pReport->x;
2659	Report.y = pReport->y;
2660	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2661
2662	LogRelFlowFunc(("VBVA: ChannelHandler: VBVA_CURSOR_POSITION: fReportPosition=%RTbool, x=%RU32, y=%RU32\n",
2663	RT_BOOL(Report.fReportPosition), Report.x, Report.y));
2664
2665	pVGAState->pDrv->pfnVBVAReportCursorPosition(pVGAState->pDrv, RT_BOOL(Report.fReportPosition), Report.x, Report.y);
2666	pReport->x = pCtx->xCursor;
2667	pReport->y = pCtx->yCursor;
2668	rc = VINF_SUCCESS;
2669	}
2670	else
2671	rc = VERR_INVALID_PARAMETER;
2672	break;
2673
2674	default:
2675	Log(("Unsupported VBVA guest command %d (%#x)!!!\n", u16ChannelInfo, u16ChannelInfo));
2676	break;
2677	}
2678
2679	return rc;
2680	}
2681
2682	/* When VBVA is paused, then VGA device is allowed to work but
2683	* no HGSMI etc state is changed.
2684	*/
2685	void VBVAPause(PVGASTATE pVGAState, bool fPause)
2686	{
2687	if (!pVGAState \|\| !pVGAState->pHGSMI)
2688	{
2689	return;
2690	}
2691
2692	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2693
2694	if (pCtx)
2695	{
2696	pCtx->fPaused = fPause;
2697	}
2698	}
2699
2700	bool VBVAIsPaused(PVGASTATE pVGAState)
2701	{
2702	if (pVGAState && pVGAState->pHGSMI)
2703	{
2704	const VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2705	if (pCtx && pCtx->cViews)
2706	{
2707	/* If VBVA is enabled at all. */
2708	const VBVAVIEW *pView = &pCtx->aViews[0];
2709	if (pView->vbva.guest.pVBVA)
2710	return pCtx->fPaused;
2711	}
2712	}
2713	/* VBVA is disabled. */
2714	return true;
2715	}
2716
2717	void VBVAOnVBEChanged(PVGASTATE pVGAState)
2718	{
2719	/* The guest does not depend on host handling the VBE registers. */
2720	if (pVGAState->fGuestCaps & VBVACAPS_USE_VBVA_ONLY)
2721	{
2722	return;
2723	}
2724
2725	VBVAPause(pVGAState, (pVGAState->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) == 0);
2726	}
2727
2728	void VBVAReset (PVGASTATE pVGAState)
2729	{
2730	if (!pVGAState \|\| !pVGAState->pHGSMI)
2731	{
2732	return;
2733	}
2734
2735	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pVGAState->pHGSMI);
2736
2737	#ifdef VBOX_WITH_VIDEOHWACCEL
2738	vbvaVHWAReset (pVGAState);
2739	#endif
2740
2741	HGSMIReset(pVGAState->pHGSMI);
2742	/* Make sure the IRQ is reset. */
2743	PDMDevHlpPCISetIrq(pVGAState->pDevInsR3, 0, PDM_IRQ_LEVEL_LOW);
2744	pVGAState->fu32PendingGuestFlags = 0;
2745
2746	if (pCtx)
2747	{
2748	vbvaFlush (pVGAState, pCtx);
2749
2750	unsigned uScreenId;
2751
2752	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
2753	{
2754	vbvaDisable (uScreenId, pVGAState, pCtx);
2755	}
2756
2757	pCtx->mouseShapeInfo.fSet = false;
2758	RTMemFree(pCtx->mouseShapeInfo.pu8Shape);
2759	pCtx->mouseShapeInfo.pu8Shape = NULL;
2760	pCtx->mouseShapeInfo.cbAllocated = 0;
2761	pCtx->mouseShapeInfo.cbShape = 0;
2762	}
2763
2764	}
2765
2766	int VBVAUpdateDisplay (PVGASTATE pVGAState)
2767	{
2768	int rc = VERR_NOT_SUPPORTED; /* Assuming that the VGA device will have to do updates. */
2769
2770	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pVGAState->pHGSMI);
2771
2772	if (pCtx)
2773	{
2774	if (!pCtx->fPaused)
2775	{
2776	rc = vbvaFlush (pVGAState, pCtx);
2777
2778	if (RT_SUCCESS (rc))
2779	{
2780	if (!pCtx->aViews[0].vbva.guest.pVBVA)
2781	{
2782	/* VBVA is not enabled for the first view, so VGA device must do updates. */
2783	rc = VERR_NOT_SUPPORTED;
2784	}
2785	}
2786	}
2787	}
2788
2789	return rc;
2790	}
2791
2792	static int vbvaSendModeHintWorker(PVGASTATE pThis, uint32_t cx, uint32_t cy,
2793	uint32_t cBPP, uint32_t iDisplay, uint32_t dx,
2794	uint32_t dy, uint32_t fEnabled,
2795	uint32_t fNotifyGuest)
2796	{
2797	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThis->pHGSMI);
2798	/** @note See Display::setVideoModeHint: "It is up to the guest to decide
2799	* whether the hint is valid. Therefore don't do any VRAM sanity checks
2800	* here! */
2801	if (iDisplay >= RT_MIN(pThis->cMonitors, RT_ELEMENTS(pCtx->aModeHints)))
2802	return VERR_OUT_OF_RANGE;
2803	pCtx->aModeHints[iDisplay].magic = VBVAMODEHINT_MAGIC;
2804	pCtx->aModeHints[iDisplay].cx = cx;
2805	pCtx->aModeHints[iDisplay].cy = cy;
2806	pCtx->aModeHints[iDisplay].cBPP = cBPP;
2807	pCtx->aModeHints[iDisplay].dx = dx;
2808	pCtx->aModeHints[iDisplay].dy = dy;
2809	pCtx->aModeHints[iDisplay].fEnabled = fEnabled;
2810	if (fNotifyGuest && pThis->fGuestCaps & VBVACAPS_IRQ && pThis->fGuestCaps & VBVACAPS_VIDEO_MODE_HINTS)
2811	VBVARaiseIrq(pThis, HGSMIHOSTFLAGS_HOTPLUG);
2812	return VINF_SUCCESS;
2813	}
2814
2815	/** Converts a display port interface pointer to a vga state pointer. */
2816	#define IDISPLAYPORT_2_VGASTATE(pInterface) ( (PVGASTATE)((uintptr_t)pInterface - RT_OFFSETOF(VGASTATE, IPort)) )
2817
2818	DECLCALLBACK(int) vbvaPortSendModeHint(PPDMIDISPLAYPORT pInterface, uint32_t cx,
2819	uint32_t cy, uint32_t cBPP,
2820	uint32_t iDisplay, uint32_t dx,
2821	uint32_t dy, uint32_t fEnabled,
2822	uint32_t fNotifyGuest)
2823	{
2824	PVGASTATE pThis;
2825	int rc;
2826
2827	pThis = IDISPLAYPORT_2_VGASTATE(pInterface);
2828	rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
2829	AssertRC(rc);
2830	rc = vbvaSendModeHintWorker(pThis, cx, cy, cBPP, iDisplay, dx, dy, fEnabled,
2831	fNotifyGuest);
2832	PDMCritSectLeave(&pThis->CritSect);
2833	return rc;
2834	}
2835
2836	DECLCALLBACK(void) vbvaPortReportHostCursorCapabilities(PPDMIDISPLAYPORT pInterface, uint32_t fCapabilitiesAdded,
2837	uint32_t fCapabilitiesRemoved)
2838	{
2839	PVGASTATE pThis = IDISPLAYPORT_2_VGASTATE(pInterface);
2840	int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
2841	AssertRC(rc);
2842	pThis->fHostCursorCapabilities \|= fCapabilitiesAdded;
2843	pThis->fHostCursorCapabilities &= ~fCapabilitiesRemoved;
2844	if (pThis->fGuestCaps & VBVACAPS_IRQ && pThis->fGuestCaps & VBVACAPS_DISABLE_CURSOR_INTEGRATION)
2845	VBVARaiseIrq(pThis, HGSMIHOSTFLAGS_CURSOR_CAPABILITIES);
2846	PDMCritSectLeave(&pThis->CritSect);
2847	}
2848
2849	DECLCALLBACK(void) vbvaPortReportHostCursorPosition(PPDMIDISPLAYPORT pInterface, uint32_t x, uint32_t y)
2850	{
2851	PVGASTATE pThis = IDISPLAYPORT_2_VGASTATE(pInterface);
2852	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThis->pHGSMI);
2853	int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
2854	AssertRC(rc);
2855	pCtx->xCursor = x;
2856	pCtx->yCursor = y;
2857	PDMCritSectLeave(&pThis->CritSect);
2858	}
2859
2860	int VBVAInit(PVGASTATE pVGAState)
2861	{
2862	PPDMDEVINS pDevIns = pVGAState->pDevInsR3;
2863
2864	PVM pVM = PDMDevHlpGetVM(pDevIns);
2865
2866	int rc = HGSMICreate(&pVGAState->pHGSMI,
2867	pVM,
2868	"VBVA",
2869	0,
2870	pVGAState->vram_ptrR3,
2871	pVGAState->vram_size,
2872	vbvaNotifyGuest,
2873	pVGAState,
2874	sizeof(VBVACONTEXT));
2875	if (RT_SUCCESS(rc))
2876	{
2877	rc = HGSMIHostChannelRegister(pVGAState->pHGSMI,
2878	HGSMI_CH_VBVA,
2879	vbvaChannelHandler,
2880	pVGAState);
2881	if (RT_SUCCESS(rc))
2882	{
2883	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pVGAState->pHGSMI);
2884	pCtx->cViews = pVGAState->cMonitors;
2885	pCtx->fPaused = true;
2886	memset(pCtx->aModeHints, ~0, sizeof(pCtx->aModeHints));
2887	pVGAState->fHostCursorCapabilities = 0;
2888	}
2889	}
2890
2891	return rc;
2892
2893	}
2894
2895	void VBVADestroy(PVGASTATE pVGAState)
2896	{
2897	PHGSMIINSTANCE pHgsmi = pVGAState->pHGSMI;
2898	if (pHgsmi)
2899	{
2900	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pHgsmi);
2901	pCtx->mouseShapeInfo.fSet = false;
2902	RTMemFree(pCtx->mouseShapeInfo.pu8Shape);
2903	pCtx->mouseShapeInfo.pu8Shape = NULL;
2904	pCtx->mouseShapeInfo.cbAllocated = 0;
2905	pCtx->mouseShapeInfo.cbShape = 0;
2906
2907	HGSMIDestroy(pHgsmi);
2908	pVGAState->pHGSMI = NULL;
2909	}
2910	}
2911

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA_VBVA.cpp@ 75401

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