DevVGA_VBVA.cpp@ 97405

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1	/* $Id: DevVGA_VBVA.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* VirtualBox Video Acceleration (VBVA).
4	*/
5
6	/*
7	* Copyright (C) 2006-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_DEV_VGA
33	#include <VBox/vmm/pdmifs.h>
34	#include <VBox/vmm/pdmdev.h>
35	#include <VBox/vmm/pgm.h>
36	#include <VBox/vmm/ssm.h>
37	#include <VBox/VMMDev.h>
38	#include <VBox/AssertGuest.h>
39	#include <VBoxVideo.h>
40	#include <iprt/alloc.h>
41	#include <iprt/assert.h>
42	#include <iprt/asm.h>
43	#include <iprt/string.h>
44	#include <iprt/param.h>
45	#ifdef VBOX_WITH_VIDEOHWACCEL
46	#include <iprt/semaphore.h>
47	#endif
48
49	#include "DevVGA.h"
50
51	/* A very detailed logging. */
52	#if 0 // def DEBUG_sunlover
53	#define LOGVBVABUFFER(a) LogFlow(a)
54	#else
55	#define LOGVBVABUFFER(a) do {} while (0)
56	#endif
57
58
59	/*********************************************************************************************************************************
60	* Structures and Typedefs *
61	*********************************************************************************************************************************/
62	typedef struct VBVAPARTIALRECORD
63	{
64	uint8_t *pu8;
65	uint32_t cb;
66	} VBVAPARTIALRECORD;
67
68	typedef struct VBVADATA
69	{
70	struct
71	{
72	VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST pVBVA; /< Pointer to the guest memory with the VBVABUFFER. /
73	uint8_t RT_UNTRUSTED_VOLATILE_GUEST pu8Data; /< For convenience, pointer to the guest ring buffer (VBVABUFFER::au8Data). /
74	} guest;
75	uint32_t u32VBVAOffset; /*< VBVABUFFER offset in the guest VRAM. /
76	VBVAPARTIALRECORD partialRecord; /*< Partial record temporary storage. /
77	uint32_t off32Data; /**< The offset where the data starts in the VBVABUFFER.
78	* The host code uses it instead of VBVABUFFER::off32Data. */
79	uint32_t indexRecordFirst; /*< Index of the first filled record in VBVABUFFER::aRecords. /
80	uint32_t cbPartialWriteThreshold; /*< Copy of VBVABUFFER::cbPartialWriteThreshold used by host code. /
81	uint32_t cbData; /*< Copy of VBVABUFFER::cbData used by host code. /
82	} VBVADATA;
83
84	typedef struct VBVAVIEW
85	{
86	VBVAINFOVIEW view;
87	VBVAINFOSCREEN screen;
88	VBVADATA vbva;
89	} VBVAVIEW;
90
91	typedef struct VBVAMOUSESHAPEINFO
92	{
93	bool fSet;
94	bool fVisible;
95	bool fAlpha;
96	uint32_t u32HotX;
97	uint32_t u32HotY;
98	uint32_t u32Width;
99	uint32_t u32Height;
100	uint32_t cbShape;
101	uint32_t cbAllocated;
102	uint8_t *pu8Shape;
103	} VBVAMOUSESHAPEINFO;
104
105	/** @todo saved state: save and restore VBVACONTEXT */
106	typedef struct VBVACONTEXT
107	{
108	uint32_t cViews;
109	VBVAVIEW aViews[VBOX_VIDEO_MAX_SCREENS];
110	VBVAMOUSESHAPEINFO mouseShapeInfo;
111	bool fPaused;
112	VBVAMODEHINT aModeHints[VBOX_VIDEO_MAX_SCREENS];
113	} VBVACONTEXT;
114
115
116	static void vbvaDataCleanup(VBVADATA *pVBVAData)
117	{
118	if (pVBVAData->guest.pVBVA)
119	{
120	pVBVAData->guest.pVBVA->hostFlags.u32HostEvents = 0;
121	pVBVAData->guest.pVBVA->hostFlags.u32SupportedOrders = 0;
122	}
123
124	RTMemFreeZ(pVBVAData->partialRecord.pu8, pVBVAData->partialRecord.cb);
125
126	RT_ZERO(*pVBVAData);
127	pVBVAData->u32VBVAOffset = HGSMIOFFSET_VOID;
128	}
129
130	/** Copies @a cb bytes from the VBVA ring buffer to the @a pbDst.
131	* Used for partial records or for records which cross the ring boundary.
132	*/
133	static bool vbvaFetchBytes(VBVADATA pVBVAData, uint8_t pbDst, uint32_t cb)
134	{
135	if (cb >= pVBVAData->cbData)
136	{
137	AssertMsgFailed(("cb = 0x%08X, ring buffer size 0x%08X", cb, pVBVAData->cbData));
138	return false;
139	}
140
141	const uint8_t RT_UNTRUSTED_VOLATILE_GUEST *pbSrc = &pVBVAData->guest.pu8Data[pVBVAData->off32Data];
142	const uint32_t u32BytesTillBoundary = pVBVAData->cbData - pVBVAData->off32Data;
143	const int32_t i32Diff = cb - u32BytesTillBoundary;
144
145	if (i32Diff <= 0)
146	{
147	/* Chunk will not cross buffer boundary. */
148	RT_BCOPY_VOLATILE(pbDst, pbSrc, cb);
149	}
150	else
151	{
152	/* Chunk crosses buffer boundary. */
153	RT_BCOPY_VOLATILE(pbDst, pbSrc, u32BytesTillBoundary);
154	RT_BCOPY_VOLATILE(pbDst + u32BytesTillBoundary, &pVBVAData->guest.pu8Data[0], i32Diff);
155	}
156
157	/* Advance data offset and sync with guest. */
158	pVBVAData->off32Data = (pVBVAData->off32Data + cb) % pVBVAData->cbData;
159	pVBVAData->guest.pVBVA->off32Data = pVBVAData->off32Data;
160	return true;
161	}
162
163
164	static bool vbvaPartialRead(uint32_t cbRecord, VBVADATA *pVBVAData)
165	{
166	VBVAPARTIALRECORD *pPartialRecord = &pVBVAData->partialRecord;
167	uint8_t *pu8New;
168
169	LOGVBVABUFFER(("vbvaPartialRead: p = %p, cb = %d, cbRecord 0x%08X\n",
170	pPartialRecord->pu8, pPartialRecord->cb, cbRecord));
171
172	Assert(cbRecord > pPartialRecord->cb); /* Caller ensures this. */
173
174	const uint32_t cbChunk = cbRecord - pPartialRecord->cb;
175	if (cbChunk >= pVBVAData->cbData)
176	{
177	return false;
178	}
179
180	if (pPartialRecord->pu8)
181	{
182	Assert(pPartialRecord->cb);
183	pu8New = (uint8_t *)RTMemRealloc(pPartialRecord->pu8, cbRecord);
184	}
185	else
186	{
187	Assert(!pPartialRecord->cb);
188	pu8New = (uint8_t *)RTMemAlloc(cbRecord);
189	}
190
191	if (!pu8New)
192	{
193	/* Memory allocation failed, fail the function. */
194	Log(("vbvaPartialRead: failed to (re)alocate memory for partial record!!! cbRecord 0x%08X\n",
195	cbRecord));
196
197	return false;
198	}
199
200	/* Fetch data from the ring buffer. */
201	if (!vbvaFetchBytes(pVBVAData, pu8New + pPartialRecord->cb, cbChunk))
202	{
203	return false;
204	}
205
206	pPartialRecord->pu8 = pu8New;
207	pPartialRecord->cb = cbRecord;
208
209	return true;
210	}
211
212	/**
213	* For contiguous chunks just return the address in the buffer. For crossing
214	* boundary - allocate a buffer from heap.
215	*/
216	static bool vbvaFetchCmd(VBVADATA pVBVAData, VBVACMDHDR RT_UNTRUSTED_VOLATILE_GUEST ppHdr, uint32_t pcbCmd)
217	{
218	VBVAPARTIALRECORD *pPartialRecord = &pVBVAData->partialRecord;
219	uint32_t indexRecordFirst = pVBVAData->indexRecordFirst;
220	const uint32_t indexRecordFree = ASMAtomicReadU32(&pVBVAData->guest.pVBVA->indexRecordFree);
221
222	LOGVBVABUFFER(("first = %d, free = %d\n",
223	indexRecordFirst, indexRecordFree));
224
225	if (indexRecordFree >= RT_ELEMENTS(pVBVAData->guest.pVBVA->aRecords))
226	{
227	return false;
228	}
229
230	if (indexRecordFirst == indexRecordFree)
231	{
232	/* No records to process. Return without assigning output variables. */
233	return true;
234	}
235
236	uint32_t cbRecordCurrent = ASMAtomicReadU32(&pVBVAData->guest.pVBVA->aRecords[indexRecordFirst].cbRecord);
237
238	LOGVBVABUFFER(("cbRecord = 0x%08X, pPartialRecord->cb = 0x%08X\n", cbRecordCurrent, pPartialRecord->cb));
239
240	uint32_t cbRecord = cbRecordCurrent & ~VBVA_F_RECORD_PARTIAL;
241
242	if (cbRecord > VBVA_MAX_RECORD_SIZE)
243	{
244	return false;
245	}
246
247	if (pPartialRecord->cb)
248	{
249	/* There is a partial read in process. Continue with it. */
250	Assert (pPartialRecord->pu8);
251
252	LOGVBVABUFFER(("continue partial record cb = %d cbRecord 0x%08X, first = %d, free = %d\n",
253	pPartialRecord->cb, cbRecordCurrent, indexRecordFirst, indexRecordFree));
254
255	if (cbRecord > pPartialRecord->cb)
256	{
257	/* New data has been added to the record. */
258	if (!vbvaPartialRead(cbRecord, pVBVAData))
259	{
260	return false;
261	}
262	}
263
264	if (!(cbRecordCurrent & VBVA_F_RECORD_PARTIAL))
265	{
266	/* The record is completed by guest. Return it to the caller. */
267	ppHdr = (VBVACMDHDR )pPartialRecord->pu8;
268	*pcbCmd = pPartialRecord->cb;
269
270	pPartialRecord->pu8 = NULL;
271	pPartialRecord->cb = 0;
272
273	/* Advance the record index and sync with guest. */
274	pVBVAData->indexRecordFirst = (indexRecordFirst + 1) % RT_ELEMENTS(pVBVAData->guest.pVBVA->aRecords);
275	pVBVAData->guest.pVBVA->indexRecordFirst = pVBVAData->indexRecordFirst;
276
277	LOGVBVABUFFER(("partial done ok, data = %d, free = %d\n",
278	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free));
279	}
280
281	return true;
282	}
283
284	/* A new record need to be processed. */
285	if (cbRecordCurrent & VBVA_F_RECORD_PARTIAL)
286	{
287	/* Current record is being written by guest. '=' is important here,
288	* because the guest will do a FLUSH at this condition.
289	* This partial record is too large for the ring buffer and must
290	* be accumulated in an allocated buffer.
291	*/
292	if (cbRecord >= pVBVAData->cbData - pVBVAData->cbPartialWriteThreshold)
293	{
294	/* Partial read must be started. */
295	if (!vbvaPartialRead(cbRecord, pVBVAData))
296	{
297	return false;
298	}
299
300	LOGVBVABUFFER(("started partial record cb = 0x%08X cbRecord 0x%08X, first = %d, free = %d\n",
301	pPartialRecord->cb, cbRecordCurrent, indexRecordFirst, indexRecordFree));
302	}
303
304	return true;
305	}
306
307	/* Current record is complete. If it is not empty, process it. */
308	if (cbRecord >= pVBVAData->cbData)
309	{
310	return false;
311	}
312
313	if (cbRecord)
314	{
315	/* The size of largest contiguous chunk in the ring buffer. */
316	uint32_t u32BytesTillBoundary = pVBVAData->cbData - pVBVAData->off32Data;
317
318	/* The pointer to data in the ring buffer. */
319	uint8_t RT_UNTRUSTED_VOLATILE_GUEST *pbSrc = &pVBVAData->guest.pu8Data[pVBVAData->off32Data];
320
321	/* Fetch or point the data. */
322	if (u32BytesTillBoundary >= cbRecord)
323	{
324	/* The command does not cross buffer boundary. Return address in the buffer. */
325	ppHdr = (VBVACMDHDR RT_UNTRUSTED_VOLATILE_GUEST )pbSrc;
326
327	/* The data offset will be updated in vbvaReleaseCmd. */
328	}
329	else
330	{
331	/* The command crosses buffer boundary. Rare case, so not optimized. */
332	uint8_t pbDst = (uint8_t )RTMemAlloc(cbRecord);
333	if (!pbDst)
334	{
335	LogFlowFunc (("could not allocate %d bytes from heap!!!\n", cbRecord));
336	return false;
337	}
338
339	vbvaFetchBytes(pVBVAData, pbDst, cbRecord);
340
341	ppHdr = (VBVACMDHDR )pbDst;
342
343	LOGVBVABUFFER(("Allocated from heap %p\n", pbDst));
344	}
345	}
346
347	*pcbCmd = cbRecord;
348
349	/* Advance the record index and sync with guest. */
350	pVBVAData->indexRecordFirst = (indexRecordFirst + 1) % RT_ELEMENTS(pVBVAData->guest.pVBVA->aRecords);
351	pVBVAData->guest.pVBVA->indexRecordFirst = pVBVAData->indexRecordFirst;
352
353	LOGVBVABUFFER(("done ok, data = %d, free = %d\n",
354	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free));
355
356	return true;
357	}
358
359	static void vbvaReleaseCmd(VBVADATA pVBVAData, VBVACMDHDR RT_UNTRUSTED_VOLATILE_GUEST pHdr, uint32_t cbCmd)
360	{
361	VBVAPARTIALRECORD *pPartialRecord = &pVBVAData->partialRecord;
362	const uint8_t RT_UNTRUSTED_VOLATILE_GUEST *pbRingBuffer = pVBVAData->guest.pu8Data;
363
364	if ( (uintptr_t)pHdr >= (uintptr_t)pbRingBuffer
365	&& (uintptr_t)pHdr < (uintptr_t)&pbRingBuffer[pVBVAData->cbData])
366	{
367	/* The pointer is inside ring buffer. Must be continuous chunk. */
368	Assert(pVBVAData->cbData - (uint32_t)((uint8_t *)pHdr - pbRingBuffer) >= cbCmd);
369
370	/* Advance data offset and sync with guest. */
371	pVBVAData->off32Data = (pVBVAData->off32Data + cbCmd) % pVBVAData->cbData;
372	pVBVAData->guest.pVBVA->off32Data = pVBVAData->off32Data;
373
374	Assert(!pPartialRecord->pu8 && pPartialRecord->cb == 0);
375	}
376	else
377	{
378	/* The pointer is outside. It is then an allocated copy. */
379	LOGVBVABUFFER(("Free heap %p\n", pHdr));
380
381	if ((uint8_t *)pHdr == pPartialRecord->pu8)
382	{
383	pPartialRecord->pu8 = NULL;
384	pPartialRecord->cb = 0;
385	}
386	else
387	{
388	Assert(!pPartialRecord->pu8 && pPartialRecord->cb == 0);
389	}
390
391	RTMemFree((void *)pHdr);
392	}
393	}
394
395	static int vbvaFlushProcess(PVGASTATECC pThisCC, VBVADATA *pVBVAData, unsigned uScreenId)
396	{
397	LOGVBVABUFFER(("uScreenId %d, indexRecordFirst = %d, indexRecordFree = %d, off32Data = %d, off32Free = %d\n",
398	uScreenId, pVBVAData->indexRecordFirst, pVBVAData->guest.pVBVA->indexRecordFree,
399	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free));
400	struct
401	{
402	/* The rectangle that includes all dirty rectangles. */
403	int32_t xLeft;
404	int32_t xRight;
405	int32_t yTop;
406	int32_t yBottom;
407	} dirtyRect;
408	RT_ZERO(dirtyRect);
409
410	bool fUpdate = false; /* Whether there were any updates. */
411	bool fDirtyEmpty = true;
412
413	for (;;)
414	{
415	/* Fetch the command data. */
416	VBVACMDHDR RT_UNTRUSTED_VOLATILE_GUEST *pHdr = NULL;
417	uint32_t cbCmd = UINT32_MAX;
418	if (!vbvaFetchCmd(pVBVAData, &pHdr, &cbCmd))
419	{
420	LogFunc(("unable to fetch command. off32Data = %d, off32Free = %d!!!\n",
421	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free));
422	return VERR_NOT_SUPPORTED;
423	}
424
425	if (cbCmd == UINT32_MAX)
426	{
427	/* No more commands yet in the queue. */
428	break;
429	}
430
431	if (cbCmd < sizeof(VBVACMDHDR))
432	{
433	LogFunc(("short command. off32Data = %d, off32Free = %d, cbCmd %d!!!\n",
434	pVBVAData->off32Data, pVBVAData->guest.pVBVA->off32Free, cbCmd));
435
436	return VERR_NOT_SUPPORTED;
437	}
438
439	if (cbCmd != 0)
440	{
441	if (!fUpdate)
442	{
443	pThisCC->pDrv->pfnVBVAUpdateBegin(pThisCC->pDrv, uScreenId);
444	fUpdate = true;
445	}
446
447	/* Updates the rectangle and sends the command to the VRDP server. */
448	pThisCC->pDrv->pfnVBVAUpdateProcess(pThisCC->pDrv, uScreenId, pHdr, cbCmd);
449
450	int32_t xRight = pHdr->x + pHdr->w;
451	int32_t yBottom = pHdr->y + pHdr->h;
452
453	/* These are global coords, relative to the primary screen. */
454
455	LOGVBVABUFFER(("cbCmd = %d, x=%d, y=%d, w=%d, h=%d\n", cbCmd, pHdr->x, pHdr->y, pHdr->w, pHdr->h));
456	LogRel3(("%s: update command cbCmd = %d, x=%d, y=%d, w=%d, h=%d\n",
457	__FUNCTION__, cbCmd, pHdr->x, pHdr->y, pHdr->w, pHdr->h));
458
459	/* Collect all rects into one. */
460	if (fDirtyEmpty)
461	{
462	/* This is the first rectangle to be added. */
463	dirtyRect.xLeft = pHdr->x;
464	dirtyRect.yTop = pHdr->y;
465	dirtyRect.xRight = xRight;
466	dirtyRect.yBottom = yBottom;
467	fDirtyEmpty = false;
468	}
469	else
470	{
471	/* Adjust region coordinates. */
472	if (dirtyRect.xLeft > pHdr->x)
473	{
474	dirtyRect.xLeft = pHdr->x;
475	}
476
477	if (dirtyRect.yTop > pHdr->y)
478	{
479	dirtyRect.yTop = pHdr->y;
480	}
481
482	if (dirtyRect.xRight < xRight)
483	{
484	dirtyRect.xRight = xRight;
485	}
486
487	if (dirtyRect.yBottom < yBottom)
488	{
489	dirtyRect.yBottom = yBottom;
490	}
491	}
492	}
493
494	vbvaReleaseCmd(pVBVAData, pHdr, cbCmd);
495	}
496
497	if (fUpdate)
498	{
499	if (dirtyRect.xRight - dirtyRect.xLeft)
500	{
501	LogRel3(("%s: sending update screen=%d, x=%d, y=%d, w=%d, h=%d\n",
502	__FUNCTION__, uScreenId, dirtyRect.xLeft,
503	dirtyRect.yTop, dirtyRect.xRight - dirtyRect.xLeft,
504	dirtyRect.yBottom - dirtyRect.yTop));
505	pThisCC->pDrv->pfnVBVAUpdateEnd(pThisCC->pDrv, uScreenId, dirtyRect.xLeft, dirtyRect.yTop,
506	dirtyRect.xRight - dirtyRect.xLeft, dirtyRect.yBottom - dirtyRect.yTop);
507	}
508	else
509	{
510	pThisCC->pDrv->pfnVBVAUpdateEnd(pThisCC->pDrv, uScreenId, 0, 0, 0, 0);
511	}
512	}
513
514	return VINF_SUCCESS;
515	}
516
517	static int vbvaFlush(PVGASTATE pThis, PVGASTATECC pThisCC, VBVACONTEXT *pCtx)
518	{
519	int rc = VINF_SUCCESS;
520
521	unsigned uScreenId;
522	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
523	{
524	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
525	if (pVBVAData->guest.pVBVA)
526	{
527	rc = vbvaFlushProcess(pThisCC, pVBVAData, uScreenId);
528	if (RT_FAILURE(rc))
529	break;
530	}
531	}
532
533	if (RT_FAILURE(rc))
534	{
535	/* Turn off VBVA processing. */
536	LogRel(("VBVA: Disabling (%Rrc)\n", rc));
537	pThis->fGuestCaps = 0;
538	pThisCC->pDrv->pfnVBVAGuestCapabilityUpdate(pThisCC->pDrv, pThis->fGuestCaps);
539	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
540	{
541	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
542	if (pVBVAData->guest.pVBVA)
543	{
544	vbvaDataCleanup(pVBVAData);
545	pThisCC->pDrv->pfnVBVADisable(pThisCC->pDrv, uScreenId);
546	}
547	}
548	}
549
550	return rc;
551	}
552
553	static int vbvaResize(PVGASTATECC pThisCC, VBVAVIEW pView, const VBVAINFOSCREEN pNewScreen, bool fResetInputMapping)
554	{
555	/* Callers ensure that pNewScreen contains valid data. */
556
557	/* Apply these changes. */
558	pView->screen = *pNewScreen;
559
560	uint8_t *pbVRam = pThisCC->pbVRam + pView->view.u32ViewOffset;
561	return pThisCC->pDrv->pfnVBVAResize(pThisCC->pDrv, &pView->view, &pView->screen, pbVRam, fResetInputMapping);
562	}
563
564	static int vbvaEnable(PVGASTATE pThis, PVGASTATECC pThisCC, VBVACONTEXT *pCtx, unsigned uScreenId,
565	VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST *pVBVA, uint32_t u32Offset, bool fRestored)
566	{
567	/*
568	* Copy into non-volatile memory and validate its content.
569	*/
570	VBVABUFFER VbgaSafe;
571	RT_COPY_VOLATILE(VbgaSafe, *pVBVA);
572	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
573
574	uint32_t const cbVBVABuffer = RT_UOFFSETOF(VBVABUFFER, au8Data) + VbgaSafe.cbData;
575	ASSERT_GUEST_RETURN( VbgaSafe.cbData <= UINT32_MAX - RT_UOFFSETOF(VBVABUFFER, au8Data)
576	&& cbVBVABuffer <= pThis->vram_size
577	&& u32Offset <= pThis->vram_size - cbVBVABuffer,
578	VERR_INVALID_PARAMETER);
579	if (!fRestored)
580	{
581	ASSERT_GUEST_RETURN(VbgaSafe.off32Data == 0, VERR_INVALID_PARAMETER);
582	ASSERT_GUEST_RETURN(VbgaSafe.off32Free == 0, VERR_INVALID_PARAMETER);
583	ASSERT_GUEST_RETURN(VbgaSafe.indexRecordFirst == 0, VERR_INVALID_PARAMETER);
584	ASSERT_GUEST_RETURN(VbgaSafe.indexRecordFree == 0, VERR_INVALID_PARAMETER);
585	}
586	ASSERT_GUEST_RETURN( VbgaSafe.cbPartialWriteThreshold < VbgaSafe.cbData
587	&& VbgaSafe.cbPartialWriteThreshold != 0,
588	VERR_INVALID_PARAMETER);
589	RT_UNTRUSTED_VALIDATED_FENCE();
590
591	/*
592	* Okay, try do the job.
593	*/
594	int rc;
595	if (pThisCC->pDrv->pfnVBVAEnable)
596	{
597	pVBVA->hostFlags.u32HostEvents = 0;
598	pVBVA->hostFlags.u32SupportedOrders = 0;
599	rc = pThisCC->pDrv->pfnVBVAEnable(pThisCC->pDrv, uScreenId, &pVBVA->hostFlags);
600	if (RT_SUCCESS(rc))
601	{
602	/* pVBVA->hostFlags has been set up by pfnVBVAEnable. */
603	LogFlowFunc(("u32HostEvents=0x%08x u32SupportedOrders=0x%08x\n",
604	pVBVA->hostFlags.u32HostEvents, pVBVA->hostFlags.u32SupportedOrders));
605
606	VBVADATA *pVBVAData = &pCtx->aViews[uScreenId].vbva;
607	pVBVAData->guest.pVBVA = pVBVA;
608	pVBVAData->guest.pu8Data = &pVBVA->au8Data[0];
609	pVBVAData->u32VBVAOffset = u32Offset;
610	pVBVAData->off32Data = VbgaSafe.off32Data;
611	pVBVAData->indexRecordFirst = VbgaSafe.indexRecordFirst;
612	pVBVAData->cbPartialWriteThreshold = VbgaSafe.cbPartialWriteThreshold;
613	pVBVAData->cbData = VbgaSafe.cbData;
614
615	if (!fRestored)
616	{
617	/** @todo Actually this function must not touch the partialRecord structure at all,
618	* because initially it is a zero and when VBVA is disabled this should be set to zero.
619	* But I'm not sure that no code depends on zeroing partialRecord here.
620	* So for now (a quick fix for 4.1) just do not do this if the VM was restored,
621	* when partialRecord might be loaded already from the saved state.
622	*/
623	pVBVAData->partialRecord.pu8 = NULL;
624	pVBVAData->partialRecord.cb = 0;
625	}
626
627	/* VBVA is working so disable the pause. */
628	pCtx->fPaused = false;
629	}
630	}
631	else
632	rc = VERR_NOT_SUPPORTED;
633	return rc;
634	}
635
636	static int vbvaDisable(PVGASTATE pThis, PVGASTATECC pThisCC, VBVACONTEXT *pCtx, unsigned idScreen)
637	{
638	/* Process any pending orders and empty the VBVA ring buffer. */
639	vbvaFlush(pThis, pThisCC, pCtx);
640
641	AssertReturn(idScreen < RT_ELEMENTS(pCtx->aViews), VERR_OUT_OF_RANGE);
642	VBVADATA *pVBVAData = &pCtx->aViews[idScreen].vbva;
643	vbvaDataCleanup(pVBVAData);
644
645	if (idScreen == 0)
646	{
647	pThis->fGuestCaps = 0;
648	pThisCC->pDrv->pfnVBVAGuestCapabilityUpdate(pThisCC->pDrv, pThis->fGuestCaps);
649	}
650	pThisCC->pDrv->pfnVBVADisable(pThisCC->pDrv, idScreen);
651	return VINF_SUCCESS;
652	}
653
654	#ifdef UNUSED_FUNCTION
655	bool VBVAIsEnabled(PVGASTATECC pThisCC)
656	{
657	PHGSMIINSTANCE pHGSMI = pThisCC->pHGSMI;
658	if (pHGSMI)
659	{
660	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pHGSMI);
661	if (pCtx)
662	{
663	if (pCtx->cViews)
664	{
665	VBVAVIEW * pView = &pCtx->aViews[0];
666	if (pView->vbva.guest.pVBVA)
667	return true;
668	}
669	}
670	}
671	return false;
672	}
673	#endif
674
675	#ifdef DEBUG_sunlover
676	void dumpMouseShapeInfo(const VBVAMOUSESHAPEINFO *pMouseShapeInfo)
677	{
678	LogFlow(("fSet = %d, fVisible %d, fAlpha %d, @%d,%d %dx%d (%p, %d/%d)\n",
679	pMouseShapeInfo->fSet,
680	pMouseShapeInfo->fVisible,
681	pMouseShapeInfo->fAlpha,
682	pMouseShapeInfo->u32HotX,
683	pMouseShapeInfo->u32HotY,
684	pMouseShapeInfo->u32Width,
685	pMouseShapeInfo->u32Height,
686	pMouseShapeInfo->pu8Shape,
687	pMouseShapeInfo->cbShape,
688	pMouseShapeInfo->cbAllocated
689	));
690	}
691	#endif
692
693	static int vbvaUpdateMousePointerShape(PVGASTATECC pThisCC, VBVAMOUSESHAPEINFO *pMouseShapeInfo, bool fShape)
694	{
695	LogFlowFunc(("pThisCC %p, pMouseShapeInfo %p, fShape %d\n", pThisCC, pMouseShapeInfo, fShape));
696	#ifdef DEBUG_sunlover
697	dumpMouseShapeInfo(pMouseShapeInfo);
698	#endif
699
700	if (pThisCC->pDrv->pfnVBVAMousePointerShape == NULL)
701	return VERR_NOT_SUPPORTED;
702
703	int rc;
704	if (fShape && pMouseShapeInfo->pu8Shape != NULL)
705	rc = pThisCC->pDrv->pfnVBVAMousePointerShape(pThisCC->pDrv,
706	pMouseShapeInfo->fVisible,
707	pMouseShapeInfo->fAlpha,
708	pMouseShapeInfo->u32HotX,
709	pMouseShapeInfo->u32HotY,
710	pMouseShapeInfo->u32Width,
711	pMouseShapeInfo->u32Height,
712	pMouseShapeInfo->pu8Shape);
713	else
714	rc = pThisCC->pDrv->pfnVBVAMousePointerShape(pThisCC->pDrv,
715	pMouseShapeInfo->fVisible,
716	false,
717	0, 0,
718	0, 0,
719	NULL);
720	return rc;
721	}
722
723	static int vbvaMousePointerShape(PVGASTATECC pThisCC, VBVACONTEXT *pCtx,
724	const VBVAMOUSEPOINTERSHAPE RT_UNTRUSTED_VOLATILE_GUEST *pShape, HGSMISIZE cbShape)
725	{
726	/*
727	* Make non-volatile copy of the shape header and validate it.
728	*/
729	VBVAMOUSEPOINTERSHAPE SafeShape;
730	RT_COPY_VOLATILE(SafeShape, *pShape);
731	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
732
733	LogFlowFunc(("VBVA_MOUSE_POINTER_SHAPE: i32Result 0x%x, fu32Flags 0x%x, hot spot %d,%d, size %dx%d\n",
734	SafeShape.i32Result, SafeShape.fu32Flags, SafeShape.u32HotX, SafeShape.u32HotY, SafeShape.u32Width, SafeShape.u32Height));
735
736	const bool fVisible = RT_BOOL(SafeShape.fu32Flags & VBOX_MOUSE_POINTER_VISIBLE);
737	const bool fAlpha = RT_BOOL(SafeShape.fu32Flags & VBOX_MOUSE_POINTER_ALPHA);
738	const bool fShape = RT_BOOL(SafeShape.fu32Flags & VBOX_MOUSE_POINTER_SHAPE);
739
740	HGSMISIZE cbPointerData = 0;
741	if (fShape)
742	{
743	static const uint32_t s_cxMax = 2048; //used to be: 8192;
744	static const uint32_t s_cyMax = 2048; //used to be: 8192;
745	ASSERT_GUEST_MSG_RETURN( SafeShape.u32Width <= s_cxMax
746	\|\| SafeShape.u32Height <= s_cyMax,
747	("Too large: %ux%u, max %ux%x\n", SafeShape.u32Width, SafeShape.u32Height, s_cxMax, s_cyMax),
748	VERR_INVALID_PARAMETER);
749
750	cbPointerData = ((((SafeShape.u32Width + 7) / 8) * SafeShape.u32Height + 3) & ~3)
751	+ SafeShape.u32Width * 4 * SafeShape.u32Height;
752
753	ASSERT_GUEST_MSG_RETURN(cbPointerData <= cbShape - RT_UOFFSETOF(VBVAMOUSEPOINTERSHAPE, au8Data),
754	("Insufficent pointer data: Expected %#x, got %#x\n",
755	cbPointerData, cbShape - RT_UOFFSETOF(VBVAMOUSEPOINTERSHAPE, au8Data) ),
756	VERR_INVALID_PARAMETER);
757	}
758	RT_UNTRUSTED_VALIDATED_FENCE();
759
760	/*
761	* Do the job.
762	*/
763	/* Save mouse info it will be used to restore mouse pointer after restoring saved state. */
764	pCtx->mouseShapeInfo.fSet = true;
765	pCtx->mouseShapeInfo.fVisible = fVisible;
766	if (fShape)
767	{
768	/* Data related to shape. */
769	pCtx->mouseShapeInfo.u32HotX = SafeShape.u32HotX;
770	pCtx->mouseShapeInfo.u32HotY = SafeShape.u32HotY;
771	pCtx->mouseShapeInfo.u32Width = SafeShape.u32Width;
772	pCtx->mouseShapeInfo.u32Height = SafeShape.u32Height;
773	pCtx->mouseShapeInfo.fAlpha = fAlpha;
774
775	/* Reallocate memory buffer if necessary. */
776	if (cbPointerData > pCtx->mouseShapeInfo.cbAllocated)
777	{
778	RTMemFreeZ(pCtx->mouseShapeInfo.pu8Shape, pCtx->mouseShapeInfo.cbAllocated);
779	pCtx->mouseShapeInfo.pu8Shape = NULL;
780	pCtx->mouseShapeInfo.cbShape = 0;
781
782	uint8_t pu8Shape = (uint8_t )RTMemAlloc(cbPointerData);
783	if (pu8Shape)
784	{
785	pCtx->mouseShapeInfo.pu8Shape = pu8Shape;
786	pCtx->mouseShapeInfo.cbAllocated = cbPointerData;
787	}
788	}
789
790	/* Copy shape bitmaps. */
791	if (pCtx->mouseShapeInfo.pu8Shape)
792	{
793	RT_BCOPY_VOLATILE(pCtx->mouseShapeInfo.pu8Shape, &pShape->au8Data[0], cbPointerData);
794	pCtx->mouseShapeInfo.cbShape = cbPointerData;
795	}
796	}
797
798	return vbvaUpdateMousePointerShape(pThisCC, &pCtx->mouseShapeInfo, fShape);
799	}
800
801	static uint32_t vbvaViewFromBufferPtr(PHGSMIINSTANCE pIns, const VBVACONTEXT *pCtx,
802	const void RT_UNTRUSTED_VOLATILE_GUEST *pvBuffer)
803	{
804	/* Check which view contains the buffer. */
805	HGSMIOFFSET offBuffer = HGSMIPointerToOffsetHost(pIns, pvBuffer);
806	if (offBuffer != HGSMIOFFSET_VOID)
807	{
808	unsigned uScreenId;
809	for (uScreenId = 0; uScreenId < pCtx->cViews; uScreenId++)
810	{
811	const VBVAINFOVIEW *pView = &pCtx->aViews[uScreenId].view;
812	if ((uint32_t)(offBuffer - pView->u32ViewOffset) < pView->u32ViewSize)
813	return pView->u32ViewIndex;
814	}
815	}
816	return UINT32_MAX;
817	}
818
819	#ifdef DEBUG_sunlover
820	static void dumpctx(const VBVACONTEXT *pCtx)
821	{
822	Log(("VBVACONTEXT dump: cViews %d\n", pCtx->cViews));
823
824	uint32_t iView;
825	for (iView = 0; iView < pCtx->cViews; iView++)
826	{
827	const VBVAVIEW *pView = &pCtx->aViews[iView];
828
829	Log((" view %d o 0x%x s 0x%x m 0x%x\n",
830	pView->view.u32ViewIndex,
831	pView->view.u32ViewOffset,
832	pView->view.u32ViewSize,
833	pView->view.u32MaxScreenSize));
834
835	Log((" screen %d @%d,%d s 0x%x l 0x%x %dx%d bpp %d f 0x%x\n",
836	pView->screen.u32ViewIndex,
837	pView->screen.i32OriginX,
838	pView->screen.i32OriginY,
839	pView->screen.u32StartOffset,
840	pView->screen.u32LineSize,
841	pView->screen.u32Width,
842	pView->screen.u32Height,
843	pView->screen.u16BitsPerPixel,
844	pView->screen.u16Flags));
845
846	Log((" VBVA o 0x%x p %p\n",
847	pView->vbva.u32VBVAOffset,
848	pView->vbva.guest.pVBVA));
849
850	Log((" PR cb 0x%x p %p\n",
851	pView->vbva.partialRecord.cb,
852	pView->vbva.partialRecord.pu8));
853	}
854
855	dumpMouseShapeInfo(&pCtx->mouseShapeInfo);
856	}
857	#endif /* DEBUG_sunlover */
858
859	#define VBOXVBVASAVEDSTATE_VHWAAVAILABLE_MAGIC 0x12345678
860	#define VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC 0x9abcdef0
861
862	#ifdef VBOX_WITH_VIDEOHWACCEL
863
864	static void vbvaVHWAHHCommandReinit(VBOXVHWACMD* pHdr, VBOXVHWACMD_TYPE enmCmd, int32_t iDisplay)
865	{
866	memset(pHdr, 0, VBOXVHWACMD_HEADSIZE());
867	pHdr->cRefs = 1;
868	pHdr->iDisplay = iDisplay;
869	pHdr->rc = VERR_NOT_IMPLEMENTED;
870	pHdr->enmCmd = enmCmd;
871	pHdr->Flags = VBOXVHWACMD_FLAG_HH_CMD;
872	}
873
874	static VBOXVHWACMD *vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE enmCmd, int32_t iDisplay, VBOXVHWACMD_LENGTH cbCmd)
875	{
876	VBOXVHWACMD pHdr = (VBOXVHWACMD )RTMemAllocZ(cbCmd + VBOXVHWACMD_HEADSIZE());
877	Assert(pHdr);
878	if (pHdr)
879	vbvaVHWAHHCommandReinit(pHdr, enmCmd, iDisplay);
880
881	return pHdr;
882	}
883
884	DECLINLINE(void) vbvaVHWAHHCommandRelease(VBOXVHWACMD *pCmd)
885	{
886	uint32_t cRefs = ASMAtomicDecU32(&pCmd->cRefs);
887	if (!cRefs)
888	RTMemFree(pCmd);
889	}
890
891	DECLINLINE(void) vbvaVHWAHHCommandRetain(VBOXVHWACMD *pCmd)
892	{
893	ASMAtomicIncU32(&pCmd->cRefs);
894	}
895
896	static void vbvaVHWACommandComplete(PVGASTATECC pThisCC, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand, bool fAsyncCommand)
897	{
898	if (fAsyncCommand)
899	{
900	Assert(pCommand->Flags & VBOXVHWACMD_FLAG_HG_ASYNCH);
901	vbvaR3VHWACommandCompleteAsync(&pThisCC->IVBVACallbacks, pCommand);
902	}
903	else
904	{
905	Log(("VGA Command <<< Sync rc %d %#p, %d\n", pCommand->rc, pCommand, pCommand->enmCmd));
906	pCommand->Flags &= ~VBOXVHWACMD_FLAG_HG_ASYNCH;
907	}
908
909	}
910
911	static void vbvaVHWACommandCompleteAllPending(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC, int rc)
912	{
913	if (!ASMAtomicUoReadU32(&pThis->pendingVhwaCommands.cPending))
914	return;
915
916	int const rcLock = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VERR_SEM_BUSY);
917	PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pDevIns, &pThis->CritSect, rcLock);
918
919	VBOX_VHWA_PENDINGCMD pIter, pNext;
920	RTListForEachSafe(&pThis->pendingVhwaCommands.PendingList, pIter, pNext, VBOX_VHWA_PENDINGCMD, Node)
921	{
922	pIter->pCommand->rc = rc;
923	vbvaVHWACommandComplete(pThisCC, pIter->pCommand, true);
924
925	/* the command is submitted/processed, remove from the pend list */
926	RTListNodeRemove(&pIter->Node);
927	ASMAtomicDecU32(&pThis->pendingVhwaCommands.cPending);
928	RTMemFree(pIter);
929	}
930
931	PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect);
932	}
933
934	static void vbvaVHWACommandClearAllPending(PPDMDEVINS pDevIns, PVGASTATE pThis)
935	{
936	if (!ASMAtomicUoReadU32(&pThis->pendingVhwaCommands.cPending))
937	return;
938
939	int const rcLock = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VERR_SEM_BUSY);
940	PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pDevIns, &pThis->CritSect, rcLock);
941
942	VBOX_VHWA_PENDINGCMD pIter, pNext;
943	RTListForEachSafe(&pThis->pendingVhwaCommands.PendingList, pIter, pNext, VBOX_VHWA_PENDINGCMD, Node)
944	{
945	RTListNodeRemove(&pIter->Node);
946	ASMAtomicDecU32(&pThis->pendingVhwaCommands.cPending);
947	RTMemFree(pIter);
948	}
949
950	PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect);
951	}
952
953	static void vbvaVHWACommandPend(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC,
954	VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand)
955	{
956	int rc = VERR_BUFFER_OVERFLOW;
957
958	if (ASMAtomicUoReadU32(&pThis->pendingVhwaCommands.cPending) < VBOX_VHWA_MAX_PENDING_COMMANDS)
959	{
960	VBOX_VHWA_PENDINGCMD pPend = (VBOX_VHWA_PENDINGCMD )RTMemAlloc(sizeof(*pPend));
961	if (pPend)
962	{
963	pCommand->Flags \|= VBOXVHWACMD_FLAG_HG_ASYNCH;
964	pPend->pCommand = pCommand;
965
966	int const rcLock = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VERR_SEM_BUSY);
967	PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pDevIns, &pThis->CritSect, rcLock);
968
969	if (ASMAtomicUoReadU32(&pThis->pendingVhwaCommands.cPending) < VBOX_VHWA_MAX_PENDING_COMMANDS)
970	{
971	RTListAppend(&pThis->pendingVhwaCommands.PendingList, &pPend->Node);
972	ASMAtomicIncU32(&pThis->pendingVhwaCommands.cPending);
973	PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect);
974	return;
975	}
976	PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect);
977	LogRel(("VBVA: Pending command count has reached its threshold.. completing them all.."));
978	RTMemFree(pPend);
979	}
980	else
981	rc = VERR_NO_MEMORY;
982	}
983	else
984	LogRel(("VBVA: Pending command count has reached its threshold, completing them all.."));
985
986	vbvaVHWACommandCompleteAllPending(pDevIns, pThis, pThisCC, rc);
987
988	pCommand->rc = rc;
989
990	vbvaVHWACommandComplete(pThisCC, pCommand, false);
991	}
992
993	static bool vbvaVHWACommandCanPend(VBOXVHWACMD_TYPE enmCmd)
994	{
995	switch (enmCmd)
996	{
997	case VBOXVHWACMD_TYPE_HH_CONSTRUCT:
998	case VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN:
999	case VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND:
1000	case VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM:
1001	case VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM:
1002	return false;
1003	default:
1004	return true;
1005	}
1006	}
1007
1008	static int vbvaVHWACommandSavePending(PCPDMDEVHLPR3 pHlp, PVGASTATE pThis, PVGASTATECC pThisCC, PSSMHANDLE pSSM)
1009	{
1010	int rc = pHlp->pfnSSMPutU32(pSSM, pThis->pendingVhwaCommands.cPending);
1011	AssertRCReturn(rc, rc);
1012
1013	VBOX_VHWA_PENDINGCMD *pIter;
1014	RTListForEach(&pThis->pendingVhwaCommands.PendingList, pIter, VBOX_VHWA_PENDINGCMD, Node)
1015	{
1016	AssertContinue((uintptr_t)pIter->pCommand - (uintptr_t)pThisCC->pbVRam < pThis->vram_size);
1017	rc = pHlp->pfnSSMPutU32(pSSM, (uint32_t)(((uint8_t )pIter->pCommand) - ((uint8_t )pThisCC->pbVRam)));
1018	AssertRCReturn(rc, rc);
1019	}
1020	return rc;
1021	}
1022
1023	static int vbvaVHWACommandLoadPending(PPDMDEVINS pDevIns, PCPDMDEVHLPR3 pHlp, PVGASTATE pThis, PVGASTATECC pThisCC,
1024	PSSMHANDLE pSSM, uint32_t u32Version)
1025	{
1026	if (u32Version < VGA_SAVEDSTATE_VERSION_WITH_PENDVHWA)
1027	return VINF_SUCCESS;
1028
1029	uint32_t u32;
1030	int rc = pHlp->pfnSSMGetU32(pSSM, &u32);
1031	AssertRCReturn(rc, rc);
1032	for (uint32_t i = 0; i < u32; ++i)
1033	{
1034	uint32_t off32;
1035	rc = pHlp->pfnSSMGetU32(pSSM, &off32);
1036	AssertRCReturn(rc, rc);
1037	VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand
1038	= (VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST )((uint8_t volatile )pThisCC->pbVRam + off32);
1039	vbvaVHWACommandPend(pDevIns, pThis, pThisCC, pCommand);
1040	}
1041	return rc;
1042	}
1043
1044
1045	/** Worker for vbvaVHWACommandSubmit. */
1046	static bool vbvaVHWACommandSubmitInner(PVGASTATE pThis, PVGASTATECC pThisCC,
1047	VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST pCommand, bool pfPending)
1048	{
1049	*pfPending = false;
1050
1051	/*
1052	* Read the command type and validate it and our driver state.
1053	*/
1054	VBOXVHWACMD_TYPE enmCmd = pCommand->enmCmd;
1055	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
1056
1057	bool fGuestCmd = (uintptr_t)pCommand - (uintptr_t)pThisCC->pbVRam < pThis->vram_size;
1058	ASSERT_GUEST_LOGREL_MSG_STMT_RETURN( !fGuestCmd
1059	\|\| ( enmCmd != VBOXVHWACMD_TYPE_HH_CONSTRUCT
1060	&& enmCmd != VBOXVHWACMD_TYPE_HH_RESET
1061	&& enmCmd != VBOXVHWACMD_TYPE_HH_DISABLE
1062	&& enmCmd != VBOXVHWACMD_TYPE_HH_ENABLE
1063	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN
1064	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND
1065	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM
1066	&& enmCmd != VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM),
1067	("enmCmd=%d\n", enmCmd),
1068	pCommand->rc = VERR_INVALID_PARAMETER,
1069	true);
1070	ASSERT_GUEST_STMT_RETURN(pThisCC->pDrv->pfnVHWACommandProcess, pCommand->rc = VERR_INVALID_STATE, true);
1071	RT_UNTRUSTED_VALIDATED_FENCE();
1072
1073	/*
1074	* Call the driver to process the command.
1075	*/
1076	Log(("VGA Command >>> %#p, %d\n", pCommand, enmCmd));
1077	int rc = pThisCC->pDrv->pfnVHWACommandProcess(pThisCC->pDrv, enmCmd, fGuestCmd, pCommand);
1078	if (rc == VINF_CALLBACK_RETURN)
1079	{
1080	Log(("VGA Command --- Going Async %#p, %d\n", pCommand, enmCmd));
1081	*pfPending = true;
1082	return true; /* Command will be completed asynchronously by the driver and need not be put in the pending list. */
1083	}
1084
1085	if (rc == VERR_INVALID_STATE)
1086	{
1087	Log(("VGA Command --- Trying Pend %#p, %d\n", pCommand, enmCmd));
1088	if (vbvaVHWACommandCanPend(enmCmd))
1089	{
1090	Log(("VGA Command --- Can Pend %#p, %d\n", pCommand, enmCmd));
1091	*pfPending = true;
1092	return false; /* put on pending list so it can be retried?? */
1093	}
1094
1095	Log(("VGA Command --- Can NOT Pend %#p, %d\n", pCommand, enmCmd));
1096	}
1097	else
1098	Log(("VGA Command --- Going Complete Sync rc %d %#p, %d\n", rc, pCommand, enmCmd));
1099
1100	/* the command was completed, take a special care about it (see caller) */
1101	pCommand->rc = rc;
1102	return true;
1103	}
1104
1105
1106	static bool vbvaVHWACommandSubmit(PVGASTATE pThis, PVGASTATECC pThisCC,
1107	VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand, bool fAsyncCommand)
1108	{
1109	bool fPending = false;
1110	bool fRet = vbvaVHWACommandSubmitInner(pThis, pThisCC, pCommand, &fPending);
1111	if (!fPending)
1112	vbvaVHWACommandComplete(pThisCC, pCommand, fAsyncCommand);
1113	return fRet;
1114	}
1115
1116
1117	/**
1118	* @returns false if commands are pending, otherwise true.
1119	*/
1120	static bool vbvaVHWACheckPendingCommands(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
1121	{
1122	if (!ASMAtomicUoReadU32(&pThis->pendingVhwaCommands.cPending))
1123	return true;
1124
1125	int const rcLock = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VERR_SEM_BUSY);
1126	PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pDevIns, &pThis->CritSect, rcLock);
1127
1128	VBOX_VHWA_PENDINGCMD pIter, pNext;
1129	RTListForEachSafe(&pThis->pendingVhwaCommands.PendingList, pIter, pNext, VBOX_VHWA_PENDINGCMD, Node)
1130	{
1131	if (!vbvaVHWACommandSubmit(pThis, pThisCC, pIter->pCommand, true))
1132	{
1133	PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect);
1134	return false; /* the command should be still pending */
1135	}
1136
1137	/* the command is submitted/processed, remove from the pend list */
1138	RTListNodeRemove(&pIter->Node);
1139	ASMAtomicDecU32(&pThis->pendingVhwaCommands.cPending);
1140	RTMemFree(pIter);
1141	}
1142
1143	PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect);
1144
1145	return true;
1146	}
1147
1148	void vbvaTimerCb(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
1149	{
1150	vbvaVHWACheckPendingCommands(pDevIns, pThis, pThisCC);
1151	}
1152
1153	static void vbvaVHWAHandleCommand(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC,
1154	VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCmd)
1155	{
1156	if (vbvaVHWACheckPendingCommands(pDevIns, pThis, pThisCC))
1157	{
1158	if (vbvaVHWACommandSubmit(pThis, pThisCC, pCmd, false))
1159	return;
1160	}
1161
1162	vbvaVHWACommandPend(pDevIns, pThis, pThisCC, pCmd);
1163	}
1164
1165	static DECLCALLBACK(void) vbvaVHWAHHCommandSetEventCallback(void * pContext)
1166	{
1167	RTSemEventSignal((RTSEMEVENT)pContext);
1168	}
1169
1170	static int vbvaVHWAHHCommandPost(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC, VBOXVHWACMD *pCmd)
1171	{
1172	RTSEMEVENT hComplEvent;
1173	int rc = RTSemEventCreate(&hComplEvent);
1174	AssertRC(rc);
1175	if (RT_SUCCESS(rc))
1176	{
1177	/* ensure the cmd is not deleted until we process it */
1178	vbvaVHWAHHCommandRetain(pCmd);
1179
1180	VBOXVHWA_HH_CALLBACK_SET(pCmd, vbvaVHWAHHCommandSetEventCallback, (void *)hComplEvent);
1181	vbvaVHWAHandleCommand(pDevIns, pThis, pThisCC, pCmd);
1182
1183	if ((ASMAtomicReadU32((volatile uint32_t *)&pCmd->Flags) & VBOXVHWACMD_FLAG_HG_ASYNCH) != 0)
1184	rc = RTSemEventWaitNoResume(hComplEvent, RT_INDEFINITE_WAIT); /** @todo Why the NoResume and event leaking here? */
1185	/* else: the command is completed */
1186
1187	AssertRC(rc);
1188	if (RT_SUCCESS(rc))
1189	RTSemEventDestroy(hComplEvent);
1190
1191	vbvaVHWAHHCommandRelease(pCmd);
1192	}
1193	return rc;
1194	}
1195
1196	int vbvaVHWAConstruct(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
1197	{
1198	pThis->pendingVhwaCommands.cPending = 0;
1199	RTListInit(&pThis->pendingVhwaCommands.PendingList);
1200
1201	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_CONSTRUCT, 0, sizeof(VBOXVHWACMD_HH_CONSTRUCT));
1202	Assert(pCmd);
1203	if(pCmd)
1204	{
1205	uint32_t iDisplay = 0;
1206	int rc = VINF_SUCCESS;
1207	VBOXVHWACMD_HH_CONSTRUCT *pBody = VBOXVHWACMD_BODY_HOST_HEAP(pCmd, VBOXVHWACMD_HH_CONSTRUCT);
1208
1209	for (;;)
1210	{
1211	memset(pBody, 0, sizeof(VBOXVHWACMD_HH_CONSTRUCT));
1212
1213	PVM pVM = PDMDevHlpGetVM(pDevIns);
1214
1215	pBody->pVM = pVM;
1216	pBody->pvVRAM = pThisCC->pbVRam;
1217	pBody->cbVRAM = pThis->vram_size;
1218
1219	rc = vbvaVHWAHHCommandPost(pDevIns, pThis, pThisCC, pCmd);
1220	ASMCompilerBarrier();
1221
1222	AssertRC(rc);
1223	if (RT_SUCCESS(rc))
1224	{
1225	rc = pCmd->rc;
1226	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NOT_IMPLEMENTED, ("%Rrc\n", rc));
1227	if(rc == VERR_NOT_IMPLEMENTED)
1228	{
1229	/** @todo set some flag in pThis indicating VHWA is not supported */
1230	/* VERR_NOT_IMPLEMENTED is not a failure, we just do not support it */
1231	rc = VINF_SUCCESS;
1232	}
1233
1234	if (!RT_SUCCESS(rc))
1235	break;
1236	}
1237	else
1238	break;
1239
1240	++iDisplay;
1241	if (iDisplay >= pThis->cMonitors)
1242	break;
1243	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_CONSTRUCT, (int32_t)iDisplay);
1244	}
1245
1246	vbvaVHWAHHCommandRelease(pCmd);
1247
1248	return rc;
1249	}
1250	return VERR_OUT_OF_RESOURCES;
1251	}
1252
1253	static int vbvaVHWAReset(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
1254	{
1255	vbvaVHWACommandClearAllPending(pDevIns, pThis);
1256
1257	/* ensure we have all pending cmds processed and h->g cmds disabled */
1258	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_RESET, 0, 0);
1259	Assert(pCmd);
1260	if (pCmd)
1261	{
1262	int rc = VINF_SUCCESS;
1263	uint32_t iDisplay = 0;
1264
1265	do
1266	{
1267	rc = vbvaVHWAHHCommandPost(pDevIns, pThis, pThisCC, pCmd);
1268	AssertRC(rc);
1269	if(RT_SUCCESS(rc))
1270	{
1271	rc = pCmd->rc;
1272	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NOT_IMPLEMENTED, ("%Rrc\n", rc));
1273	if (rc == VERR_NOT_IMPLEMENTED)
1274	rc = VINF_SUCCESS;
1275	}
1276
1277	if (!RT_SUCCESS(rc))
1278	break;
1279
1280	++iDisplay;
1281	if (iDisplay >= pThis->cMonitors)
1282	break;
1283	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_RESET, (int32_t)iDisplay);
1284
1285	} while (true);
1286
1287	vbvaVHWAHHCommandRelease(pCmd);
1288
1289	return rc;
1290	}
1291	return VERR_OUT_OF_RESOURCES;
1292	}
1293
1294	typedef DECLCALLBACKTYPE(bool, FNVBOXVHWAHHCMDPRECB,(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC, VBOXVHWACMD *pCmd,
1295	uint32_t iDisplay, void *pvContext));
1296	typedef FNVBOXVHWAHHCMDPRECB *PFNVBOXVHWAHHCMDPRECB;
1297
1298	typedef DECLCALLBACKTYPE(bool, FNVBOXVHWAHHCMDPOSTCB,(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC, VBOXVHWACMD *pCmd,
1299	uint32_t iDisplay, int rc, void *pvContext));
1300	typedef FNVBOXVHWAHHCMDPOSTCB *PFNVBOXVHWAHHCMDPOSTCB;
1301
1302	static int vbvaVHWAHHPost(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC, VBOXVHWACMD *pCmd,
1303	PFNVBOXVHWAHHCMDPRECB pfnPre, PFNVBOXVHWAHHCMDPOSTCB pfnPost, void *pvContext)
1304	{
1305	const VBOXVHWACMD_TYPE enmType = pCmd->enmCmd;
1306	int rc = VINF_SUCCESS;
1307	uint32_t iDisplay = 0;
1308
1309	do
1310	{
1311	if (!pfnPre \|\| pfnPre(pDevIns, pThis, pThisCC, pCmd, iDisplay, pvContext))
1312	{
1313	rc = vbvaVHWAHHCommandPost(pDevIns, pThis, pThisCC, pCmd);
1314	AssertRC(rc);
1315	if (pfnPost)
1316	{
1317	if (!pfnPost(pDevIns, pThis, pThisCC, pCmd, iDisplay, rc, pvContext))
1318	{
1319	rc = VINF_SUCCESS;
1320	break;
1321	}
1322	rc = VINF_SUCCESS;
1323	}
1324	else if(RT_SUCCESS(rc))
1325	{
1326	rc = pCmd->rc;
1327	AssertMsg(RT_SUCCESS(rc) \|\| rc == VERR_NOT_IMPLEMENTED, ("%Rrc\n", rc));
1328	if(rc == VERR_NOT_IMPLEMENTED)
1329	{
1330	rc = VINF_SUCCESS;
1331	}
1332	}
1333
1334	if (!RT_SUCCESS(rc))
1335	break;
1336	}
1337
1338	++iDisplay;
1339	if (iDisplay >= pThis->cMonitors)
1340	break;
1341	vbvaVHWAHHCommandReinit(pCmd, enmType, (int32_t)iDisplay);
1342	} while (true);
1343
1344	return rc;
1345	}
1346
1347	/** @todo call this also on reset? */
1348	static int vbvaVHWAEnable(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC, bool bEnable)
1349	{
1350	const VBOXVHWACMD_TYPE enmType = bEnable ? VBOXVHWACMD_TYPE_HH_ENABLE : VBOXVHWACMD_TYPE_HH_DISABLE;
1351	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(enmType, 0, 0);
1352	Assert(pCmd);
1353	if(pCmd)
1354	{
1355	int rc = vbvaVHWAHHPost(pDevIns, pThis, pThisCC, pCmd, NULL, NULL, NULL);
1356	vbvaVHWAHHCommandRelease(pCmd);
1357	return rc;
1358	}
1359	return VERR_OUT_OF_RESOURCES;
1360	}
1361
1362	int vboxVBVASaveStatePrep(PPDMDEVINS pDevIns)
1363	{
1364	/* ensure we have no pending commands */
1365	return vbvaVHWAEnable(pDevIns, PDMDEVINS_2_DATA(pDevIns, PVGASTATE), PDMDEVINS_2_DATA_CC(pDevIns, PVGASTATECC), false);
1366	}
1367
1368	int vboxVBVASaveStateDone(PPDMDEVINS pDevIns)
1369	{
1370	/* ensure we have no pending commands */
1371	return vbvaVHWAEnable(pDevIns, PDMDEVINS_2_DATA(pDevIns, PVGASTATE), PDMDEVINS_2_DATA_CC(pDevIns, PVGASTATECC), true);
1372	}
1373
1374
1375	/**
1376	* @interface_method_impl{PDMIDISPLAYVBVACALLBACKS,pfnVHWACommandCompleteAsync}
1377	*/
1378	DECLCALLBACK(int) vbvaR3VHWACommandCompleteAsync(PPDMIDISPLAYVBVACALLBACKS pInterface,
1379	VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCmd)
1380	{
1381	PVGASTATECC pThisCC = RT_FROM_MEMBER(pInterface, VGASTATECC, IVBVACallbacks);
1382	PPDMDEVINS pDevIns = pThisCC->pDevIns;
1383	PVGASTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVGASTATE);
1384	int rc;
1385
1386	Log(("VGA Command <<< Async rc %d %#p, %d\n", pCmd->rc, pCmd, pCmd->enmCmd));
1387
1388	if ((uintptr_t)pCmd - (uintptr_t)pThisCC->pbVRam < pThis->vram_size)
1389	{
1390	PHGSMIINSTANCE pIns = pThisCC->pHGSMI;
1391	Assert(!(pCmd->Flags & VBOXVHWACMD_FLAG_HH_CMD));
1392	Assert(pCmd->Flags & VBOXVHWACMD_FLAG_HG_ASYNCH);
1393	#ifdef VBOX_WITH_WDDM
1394	if (pThis->fGuestCaps & VBVACAPS_COMPLETEGCMD_BY_IOREAD)
1395	{
1396	rc = HGSMICompleteGuestCommand(pIns, pCmd, !!(pCmd->Flags & VBOXVHWACMD_FLAG_GH_ASYNCH_IRQ));
1397	AssertRC(rc);
1398	}
1399	else
1400	#endif
1401	{
1402	VBVAHOSTCMD RT_UNTRUSTED_VOLATILE_GUEST pHostCmd = NULL; / Shut up MSC. */
1403	if (pCmd->Flags & VBOXVHWACMD_FLAG_GH_ASYNCH_EVENT)
1404	{
1405	rc = HGSMIHostCommandAlloc(pIns,
1406	(void RT_UNTRUSTED_VOLATILE_GUEST **)&pHostCmd,
1407	VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDEVENT)),
1408	HGSMI_CH_VBVA,
1409	VBVAHG_EVENT);
1410	AssertRC(rc);
1411	if (RT_SUCCESS(rc))
1412	{
1413	memset((void *)pHostCmd, 0 , VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDEVENT)));
1414	pHostCmd->iDstID = pCmd->iDisplay;
1415	pHostCmd->customOpCode = 0;
1416	VBVAHOSTCMDEVENT RT_UNTRUSTED_VOLATILE_GUEST *pBody = VBVAHOSTCMD_BODY(pHostCmd, VBVAHOSTCMDEVENT);
1417	pBody->pEvent = pCmd->GuestVBVAReserved1;
1418	}
1419	}
1420	else
1421	{
1422	HGSMIOFFSET offCmd = HGSMIPointerToOffsetHost(pIns, pCmd);
1423	Assert(offCmd != HGSMIOFFSET_VOID);
1424	if (offCmd != HGSMIOFFSET_VOID)
1425	{
1426	rc = HGSMIHostCommandAlloc(pIns,
1427	(void RT_UNTRUSTED_VOLATILE_GUEST **)&pHostCmd,
1428	VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDVHWACMDCOMPLETE)),
1429	HGSMI_CH_VBVA,
1430	VBVAHG_DISPLAY_CUSTOM);
1431	AssertRC(rc);
1432	if (RT_SUCCESS(rc))
1433	{
1434	memset((void *)pHostCmd, 0 , VBVAHOSTCMD_SIZE(sizeof(VBVAHOSTCMDVHWACMDCOMPLETE)));
1435	pHostCmd->iDstID = pCmd->iDisplay;
1436	pHostCmd->customOpCode = VBVAHG_DCUSTOM_VHWA_CMDCOMPLETE;
1437	VBVAHOSTCMDVHWACMDCOMPLETE RT_UNTRUSTED_VOLATILE_GUEST *pBody
1438	= VBVAHOSTCMD_BODY(pHostCmd, VBVAHOSTCMDVHWACMDCOMPLETE);
1439	pBody->offCmd = offCmd;
1440	}
1441	}
1442	else
1443	rc = VERR_INVALID_PARAMETER;
1444	}
1445
1446	if (RT_SUCCESS(rc))
1447	{
1448	rc = HGSMIHostCommandSubmitAndFreeAsynch(pIns, pHostCmd, RT_BOOL(pCmd->Flags & VBOXVHWACMD_FLAG_GH_ASYNCH_IRQ));
1449	AssertRC(rc);
1450	if (RT_SUCCESS(rc))
1451	return rc;
1452
1453	HGSMIHostCommandFree (pIns, pHostCmd);
1454	}
1455	}
1456	}
1457	else
1458	{
1459	Assert(pCmd->Flags & VBOXVHWACMD_FLAG_HH_CMD);
1460	PFNVBOXVHWA_HH_CALLBACK pfn = VBOXVHWA_HH_CALLBACK_GET(pCmd);
1461	if (pfn)
1462	pfn(VBOXVHWA_HH_CALLBACK_GET_ARG(pCmd));
1463	rc = VINF_SUCCESS;
1464	}
1465	return rc;
1466	}
1467
1468	typedef struct VBOXVBVASAVEDSTATECBDATA
1469	{
1470	PSSMHANDLE pSSM;
1471	int rc;
1472	bool ab2DOn[VBOX_VIDEO_MAX_SCREENS];
1473	} VBOXVBVASAVEDSTATECBDATA, *PVBOXVBVASAVEDSTATECBDATA;
1474
1475	/**
1476	* @callback_method_impl{FNVBOXVHWAHHCMDPOSTCB}
1477	*/
1478	static DECLCALLBACK(bool) vboxVBVASaveStateBeginPostCb(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC,
1479	VBOXVHWACMD pCmd, uint32_t iDisplay, int rc, void pvContext)
1480	{
1481	RT_NOREF(pDevIns, pThis, pThisCC, pCmd);
1482	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1483	if (RT_FAILURE(pData->rc))
1484	return false;
1485	if (RT_FAILURE(rc))
1486	{
1487	pData->rc = rc;
1488	return false;
1489	}
1490
1491	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1492	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1493	{
1494	pData->rc = VERR_INVALID_PARAMETER;
1495	return false;
1496	}
1497
1498	Assert(RT_SUCCESS(pCmd->rc) \|\| pCmd->rc == VERR_NOT_IMPLEMENTED);
1499	if (RT_SUCCESS(pCmd->rc))
1500	{
1501	pData->ab2DOn[iDisplay] = true;
1502	}
1503	else if (pCmd->rc != VERR_NOT_IMPLEMENTED)
1504	{
1505	pData->rc = pCmd->rc;
1506	return false;
1507	}
1508
1509	return true;
1510	}
1511
1512	/**
1513	* @callback_method_impl{FNVBOXVHWAHHCMDPRECB}
1514	*/
1515	static DECLCALLBACK(bool) vboxVBVASaveStatePerformPreCb(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC,
1516	VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext)
1517	{
1518	RT_NOREF(pThis, pThisCC, pCmd);
1519	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1520	if (RT_FAILURE(pData->rc))
1521	return false;
1522
1523	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1524	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1525	{
1526	pData->rc = VERR_INVALID_PARAMETER;
1527	return false;
1528	}
1529
1530	int rc;
1531	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1532
1533	if (pData->ab2DOn[iDisplay])
1534	{
1535	rc = pHlp->pfnSSMPutU32(pData->pSSM, VBOXVBVASAVEDSTATE_VHWAAVAILABLE_MAGIC); AssertRC(rc);
1536	if (RT_FAILURE(rc))
1537	{
1538	pData->rc = rc;
1539	return false;
1540	}
1541	return true;
1542	}
1543
1544	rc = pHlp->pfnSSMPutU32(pData->pSSM, VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC); AssertRC(rc);
1545	if (RT_FAILURE(rc))
1546	{
1547	pData->rc = rc;
1548	return false;
1549	}
1550
1551	return false;
1552	}
1553
1554	/**
1555	* @callback_method_impl{FNVBOXVHWAHHCMDPOSTCB}
1556	*/
1557	static DECLCALLBACK(bool) vboxVBVASaveStateEndPreCb(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC,
1558	VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext)
1559	{
1560	RT_NOREF(pDevIns, pThis, pThisCC, pCmd);
1561	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1562	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1563	if (pData->ab2DOn[iDisplay])
1564	return true;
1565	return false;
1566	}
1567
1568	/**
1569	* @callback_method_impl{FNVBOXVHWAHHCMDPOSTCB}
1570	*/
1571	static DECLCALLBACK(bool) vboxVBVALoadStatePerformPostCb(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC,
1572	VBOXVHWACMD pCmd, uint32_t iDisplay, int rc, void pvContext)
1573	{
1574	RT_NOREF(pThis, pThisCC, pCmd);
1575	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1576	if (RT_FAILURE(pData->rc))
1577	return false;
1578	if (RT_FAILURE(rc))
1579	{
1580	pData->rc = rc;
1581	return false;
1582	}
1583
1584	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1585	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1586	{
1587	pData->rc = VERR_INVALID_PARAMETER;
1588	return false;
1589	}
1590
1591	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1592	Assert(RT_SUCCESS(pCmd->rc) \|\| pCmd->rc == VERR_NOT_IMPLEMENTED);
1593	if (pCmd->rc == VERR_NOT_IMPLEMENTED)
1594	{
1595	pData->rc = pHlp->pfnSSMSkipToEndOfUnit(pData->pSSM);
1596	AssertRC(pData->rc);
1597	return false;
1598	}
1599	if (RT_FAILURE(pCmd->rc))
1600	{
1601	pData->rc = pCmd->rc;
1602	return false;
1603	}
1604
1605	return true;
1606	}
1607
1608	/**
1609	* @callback_method_impl{FNVBOXVHWAHHCMDPOSTCB}
1610	*/
1611	static DECLCALLBACK(bool) vboxVBVALoadStatePerformPreCb(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC,
1612	VBOXVHWACMD pCmd, uint32_t iDisplay, void pvContext)
1613	{
1614	RT_NOREF(pThis, pThisCC, pCmd);
1615	PVBOXVBVASAVEDSTATECBDATA pData = (PVBOXVBVASAVEDSTATECBDATA)pvContext;
1616	if (RT_FAILURE(pData->rc))
1617	return false;
1618
1619	Assert(iDisplay < RT_ELEMENTS(pData->ab2DOn));
1620	if (iDisplay >= RT_ELEMENTS(pData->ab2DOn))
1621	{
1622	pData->rc = VERR_INVALID_PARAMETER;
1623	return false;
1624	}
1625
1626	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1627	int rc;
1628	uint32_t u32;
1629	rc = pHlp->pfnSSMGetU32(pData->pSSM, &u32); AssertRC(rc);
1630	if (RT_FAILURE(rc))
1631	{
1632	pData->rc = rc;
1633	return false;
1634	}
1635
1636	switch (u32)
1637	{
1638	case VBOXVBVASAVEDSTATE_VHWAAVAILABLE_MAGIC:
1639	pData->ab2DOn[iDisplay] = true;
1640	return true;
1641	case VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC:
1642	pData->ab2DOn[iDisplay] = false;
1643	return false;
1644	default:
1645	pData->rc = VERR_INVALID_STATE;
1646	return false;
1647	}
1648	}
1649
1650	#endif /* VBOX_WITH_VIDEOHWACCEL */
1651
1652	static int vboxVBVASaveDevStateExec(PCPDMDEVHLPR3 pHlp, PVGASTATE pThis, PVGASTATECC pThisCC, PSSMHANDLE pSSM)
1653	{
1654	PHGSMIINSTANCE pIns = pThisCC->pHGSMI;
1655	int rc = HGSMIHostSaveStateExec(pHlp, pIns, pSSM);
1656	if (RT_SUCCESS(rc))
1657	{
1658	VGA_SAVED_STATE_PUT_MARKER(pSSM, 2);
1659
1660	/* Save VBVACONTEXT. */
1661	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pIns);
1662
1663	if (!pCtx)
1664	{
1665	AssertFailed();
1666
1667	/* Still write a valid value to the SSM. */
1668	rc = pHlp->pfnSSMPutU32 (pSSM, 0);
1669	AssertRCReturn(rc, rc);
1670	}
1671	else
1672	{
1673	#ifdef DEBUG_sunlover
1674	dumpctx(pCtx);
1675	#endif
1676
1677	rc = pHlp->pfnSSMPutU32 (pSSM, pCtx->cViews);
1678	AssertRCReturn(rc, rc);
1679
1680	uint32_t iView;
1681	for (iView = 0; iView < pCtx->cViews; iView++)
1682	{
1683	VBVAVIEW *pView = &pCtx->aViews[iView];
1684
1685	rc = pHlp->pfnSSMPutU32(pSSM, pView->view.u32ViewIndex);
1686	AssertRCReturn(rc, rc);
1687	rc = pHlp->pfnSSMPutU32(pSSM, pView->view.u32ViewOffset);
1688	AssertRCReturn(rc, rc);
1689	rc = pHlp->pfnSSMPutU32(pSSM, pView->view.u32ViewSize);
1690	AssertRCReturn(rc, rc);
1691	rc = pHlp->pfnSSMPutU32(pSSM, pView->view.u32MaxScreenSize);
1692	AssertRCReturn(rc, rc);
1693
1694	rc = pHlp->pfnSSMPutU32(pSSM, pView->screen.u32ViewIndex);
1695	AssertRCReturn(rc, rc);
1696	rc = pHlp->pfnSSMPutS32(pSSM, pView->screen.i32OriginX);
1697	AssertRCReturn(rc, rc);
1698	rc = pHlp->pfnSSMPutS32(pSSM, pView->screen.i32OriginY);
1699	AssertRCReturn(rc, rc);
1700	rc = pHlp->pfnSSMPutU32(pSSM, pView->screen.u32StartOffset);
1701	AssertRCReturn(rc, rc);
1702	rc = pHlp->pfnSSMPutU32(pSSM, pView->screen.u32LineSize);
1703	AssertRCReturn(rc, rc);
1704	rc = pHlp->pfnSSMPutU32(pSSM, pView->screen.u32Width);
1705	AssertRCReturn(rc, rc);
1706	rc = pHlp->pfnSSMPutU32(pSSM, pView->screen.u32Height);
1707	AssertRCReturn(rc, rc);
1708	rc = pHlp->pfnSSMPutU16(pSSM, pView->screen.u16BitsPerPixel);
1709	AssertRCReturn(rc, rc);
1710	rc = pHlp->pfnSSMPutU16(pSSM, pView->screen.u16Flags);
1711	AssertRCReturn(rc, rc);
1712
1713	rc = pHlp->pfnSSMPutU32(pSSM, pView->vbva.guest.pVBVA? pView->vbva.u32VBVAOffset: HGSMIOFFSET_VOID);
1714	AssertRCReturn(rc, rc);
1715
1716	rc = pHlp->pfnSSMPutU32(pSSM, pView->vbva.partialRecord.cb);
1717	AssertRCReturn(rc, rc);
1718
1719	if (pView->vbva.partialRecord.cb > 0)
1720	{
1721	rc = pHlp->pfnSSMPutMem(pSSM, pView->vbva.partialRecord.pu8, pView->vbva.partialRecord.cb);
1722	AssertRCReturn(rc, rc);
1723	}
1724	}
1725
1726	/* Save mouse pointer shape information. */
1727	rc = pHlp->pfnSSMPutBool(pSSM, pCtx->mouseShapeInfo.fSet);
1728	AssertRCReturn(rc, rc);
1729	rc = pHlp->pfnSSMPutBool(pSSM, pCtx->mouseShapeInfo.fVisible);
1730	AssertRCReturn(rc, rc);
1731	rc = pHlp->pfnSSMPutBool(pSSM, pCtx->mouseShapeInfo.fAlpha);
1732	AssertRCReturn(rc, rc);
1733	rc = pHlp->pfnSSMPutU32(pSSM, pCtx->mouseShapeInfo.u32HotX);
1734	AssertRCReturn(rc, rc);
1735	rc = pHlp->pfnSSMPutU32(pSSM, pCtx->mouseShapeInfo.u32HotY);
1736	AssertRCReturn(rc, rc);
1737	rc = pHlp->pfnSSMPutU32(pSSM, pCtx->mouseShapeInfo.u32Width);
1738	AssertRCReturn(rc, rc);
1739	rc = pHlp->pfnSSMPutU32(pSSM, pCtx->mouseShapeInfo.u32Height);
1740	AssertRCReturn(rc, rc);
1741	rc = pHlp->pfnSSMPutU32(pSSM, pCtx->mouseShapeInfo.cbShape);
1742	AssertRCReturn(rc, rc);
1743	if (pCtx->mouseShapeInfo.cbShape)
1744	{
1745	rc = pHlp->pfnSSMPutMem(pSSM, pCtx->mouseShapeInfo.pu8Shape, pCtx->mouseShapeInfo.cbShape);
1746	AssertRCReturn(rc, rc);
1747	}
1748
1749	#ifdef VBOX_WITH_WDDM
1750	/* Size of some additional data. For future extensions. */
1751	rc = pHlp->pfnSSMPutU32(pSSM, 4);
1752	AssertRCReturn(rc, rc);
1753	rc = pHlp->pfnSSMPutU32(pSSM, pThis->fGuestCaps);
1754	AssertRCReturn(rc, rc);
1755	#else
1756	/* Size of some additional data. For future extensions. */
1757	rc = pHlp->pfnSSMPutU32(pSSM, 0);
1758	AssertRCReturn(rc, rc);
1759	#endif
1760	rc = pHlp->pfnSSMPutU32(pSSM, RT_ELEMENTS(pCtx->aModeHints));
1761	AssertRCReturn(rc, rc);
1762	rc = pHlp->pfnSSMPutU32(pSSM, sizeof(VBVAMODEHINT));
1763	AssertRCReturn(rc, rc);
1764	for (unsigned i = 0; i < RT_ELEMENTS(pCtx->aModeHints); ++i)
1765	{
1766	rc = pHlp->pfnSSMPutMem(pSSM, &pCtx->aModeHints[i], sizeof(VBVAMODEHINT));
1767	AssertRCReturn(rc, rc);
1768	}
1769	}
1770	}
1771
1772	return rc;
1773	}
1774
1775	int vboxVBVASaveStateExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1776	{
1777	PVGASTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVGASTATE);
1778	PVGASTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVGASTATECC);
1779	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1780	int rc;
1781	#ifdef VBOX_WITH_VIDEOHWACCEL
1782	VBOXVBVASAVEDSTATECBDATA VhwaData = {0};
1783	VhwaData.pSSM = pSSM;
1784	uint32_t cbCmd = sizeof (VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM); /* maximum cmd size */
1785	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN, 0, cbCmd);
1786	Assert(pCmd);
1787	if (pCmd)
1788	{
1789	vbvaVHWAHHPost(pDevIns, pThis, pThisCC, pCmd, NULL, vboxVBVASaveStateBeginPostCb, &VhwaData);
1790	rc = VhwaData.rc;
1791	AssertRC(rc);
1792	if (RT_SUCCESS(rc))
1793	{
1794	#endif
1795	rc = vboxVBVASaveDevStateExec(pHlp, pThis, pThisCC, pSSM);
1796	AssertRC(rc);
1797	#ifdef VBOX_WITH_VIDEOHWACCEL
1798	if (RT_SUCCESS(rc))
1799	{
1800	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM, 0);
1801	VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM *pSave = VBOXVHWACMD_BODY_HOST_HEAP(pCmd, VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM);
1802	pSave->pSSM = pSSM;
1803	vbvaVHWAHHPost(pDevIns, pThis, pThisCC, pCmd, vboxVBVASaveStatePerformPreCb, NULL, &VhwaData);
1804	rc = VhwaData.rc;
1805	AssertRC(rc);
1806	if (RT_SUCCESS(rc))
1807	{
1808	rc = vbvaVHWACommandSavePending(pHlp, pThis, pThisCC, pSSM);
1809	AssertRCReturn(rc, rc);
1810
1811	vbvaVHWAHHCommandReinit(pCmd, VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND, 0);
1812	vbvaVHWAHHPost(pDevIns, pThis, pThisCC, pCmd, vboxVBVASaveStateEndPreCb, NULL, &VhwaData);
1813	rc = VhwaData.rc;
1814	AssertRC(rc);
1815	}
1816	}
1817	}
1818
1819	vbvaVHWAHHCommandRelease(pCmd);
1820	}
1821	else
1822	rc = VERR_OUT_OF_RESOURCES;
1823	#else
1824	if (RT_SUCCESS(rc))
1825	{
1826	for (uint32_t i = 0; i < pThis->cMonitors; ++i)
1827	{
1828	rc = pHlp->pfnSSMPutU32(pSSM, VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC);
1829	AssertRCReturn(rc, rc);
1830	}
1831	}
1832
1833	/* no pending commands */
1834	pHlp->pfnSSMPutU32(pSSM, 0);
1835	#endif
1836	return rc;
1837	}
1838
1839	int vboxVBVALoadStateExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion)
1840	{
1841	if (uVersion < VGA_SAVEDSTATE_VERSION_HGSMI)
1842	{
1843	/* Nothing was saved. */
1844	return VINF_SUCCESS;
1845	}
1846
1847	PVGASTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVGASTATE);
1848	PVGASTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVGASTATECC);
1849	PHGSMIINSTANCE pIns = pThisCC->pHGSMI;
1850	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1851	int rc = HGSMIHostLoadStateExec(pHlp, pIns, pSSM, uVersion);
1852	if (RT_SUCCESS(rc))
1853	{
1854	VGA_SAVED_STATE_GET_MARKER_RETURN_ON_MISMATCH(pSSM, uVersion, 2);
1855
1856	/* Load VBVACONTEXT. */
1857	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pIns);
1858
1859	if (!pCtx)
1860	{
1861	/* This should not happen. */
1862	AssertFailed();
1863	rc = VERR_INVALID_PARAMETER;
1864	}
1865	else
1866	{
1867	uint32_t cViews = 0;
1868	rc = pHlp->pfnSSMGetU32 (pSSM, &cViews);
1869	AssertRCReturn(rc, rc);
1870
1871	uint32_t iView;
1872	for (iView = 0; iView < cViews; iView++)
1873	{
1874	VBVAVIEW *pView = &pCtx->aViews[iView];
1875
1876	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->view.u32ViewIndex);
1877	AssertRCReturn(rc, rc);
1878	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->view.u32ViewOffset);
1879	AssertRCReturn(rc, rc);
1880	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->view.u32ViewSize);
1881	AssertRCReturn(rc, rc);
1882	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->view.u32MaxScreenSize);
1883	AssertRCReturn(rc, rc);
1884
1885	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->screen.u32ViewIndex);
1886	AssertRCReturn(rc, rc);
1887	rc = pHlp->pfnSSMGetS32 (pSSM, &pView->screen.i32OriginX);
1888	AssertRCReturn(rc, rc);
1889	rc = pHlp->pfnSSMGetS32 (pSSM, &pView->screen.i32OriginY);
1890	AssertRCReturn(rc, rc);
1891	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->screen.u32StartOffset);
1892	AssertRCReturn(rc, rc);
1893	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->screen.u32LineSize);
1894	AssertRCReturn(rc, rc);
1895	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->screen.u32Width);
1896	AssertRCReturn(rc, rc);
1897	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->screen.u32Height);
1898	AssertRCReturn(rc, rc);
1899	rc = pHlp->pfnSSMGetU16 (pSSM, &pView->screen.u16BitsPerPixel);
1900	AssertRCReturn(rc, rc);
1901	rc = pHlp->pfnSSMGetU16 (pSSM, &pView->screen.u16Flags);
1902	AssertRCReturn(rc, rc);
1903
1904	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->vbva.u32VBVAOffset);
1905	AssertRCReturn(rc, rc);
1906
1907	rc = pHlp->pfnSSMGetU32 (pSSM, &pView->vbva.partialRecord.cb);
1908	AssertRCReturn(rc, rc);
1909
1910	if (pView->vbva.partialRecord.cb == 0)
1911	{
1912	pView->vbva.partialRecord.pu8 = NULL;
1913	}
1914	else
1915	{
1916	Assert(pView->vbva.partialRecord.pu8 == NULL); /* Should be it. */
1917
1918	uint8_t pu8 = (uint8_t )RTMemAlloc(pView->vbva.partialRecord.cb);
1919
1920	if (!pu8)
1921	{
1922	return VERR_NO_MEMORY;
1923	}
1924
1925	pView->vbva.partialRecord.pu8 = pu8;
1926
1927	rc = pHlp->pfnSSMGetMem (pSSM, pView->vbva.partialRecord.pu8, pView->vbva.partialRecord.cb);
1928	AssertRCReturn(rc, rc);
1929	}
1930
1931	if (pView->vbva.u32VBVAOffset == HGSMIOFFSET_VOID)
1932	{
1933	pView->vbva.guest.pVBVA = NULL;
1934	}
1935	else
1936	{
1937	pView->vbva.guest.pVBVA = (VBVABUFFER *)HGSMIOffsetToPointerHost(pIns, pView->vbva.u32VBVAOffset);
1938	}
1939	}
1940
1941	if (uVersion > VGA_SAVEDSTATE_VERSION_WITH_CONFIG)
1942	{
1943	/* Read mouse pointer shape information. */
1944	rc = pHlp->pfnSSMGetBool (pSSM, &pCtx->mouseShapeInfo.fSet);
1945	AssertRCReturn(rc, rc);
1946	rc = pHlp->pfnSSMGetBool (pSSM, &pCtx->mouseShapeInfo.fVisible);
1947	AssertRCReturn(rc, rc);
1948	rc = pHlp->pfnSSMGetBool (pSSM, &pCtx->mouseShapeInfo.fAlpha);
1949	AssertRCReturn(rc, rc);
1950	rc = pHlp->pfnSSMGetU32 (pSSM, &pCtx->mouseShapeInfo.u32HotX);
1951	AssertRCReturn(rc, rc);
1952	rc = pHlp->pfnSSMGetU32 (pSSM, &pCtx->mouseShapeInfo.u32HotY);
1953	AssertRCReturn(rc, rc);
1954	rc = pHlp->pfnSSMGetU32 (pSSM, &pCtx->mouseShapeInfo.u32Width);
1955	AssertRCReturn(rc, rc);
1956	rc = pHlp->pfnSSMGetU32 (pSSM, &pCtx->mouseShapeInfo.u32Height);
1957	AssertRCReturn(rc, rc);
1958	rc = pHlp->pfnSSMGetU32 (pSSM, &pCtx->mouseShapeInfo.cbShape);
1959	AssertRCReturn(rc, rc);
1960	if (pCtx->mouseShapeInfo.cbShape)
1961	{
1962	pCtx->mouseShapeInfo.pu8Shape = (uint8_t *)RTMemAlloc(pCtx->mouseShapeInfo.cbShape);
1963	if (pCtx->mouseShapeInfo.pu8Shape == NULL)
1964	{
1965	return VERR_NO_MEMORY;
1966	}
1967	pCtx->mouseShapeInfo.cbAllocated = pCtx->mouseShapeInfo.cbShape;
1968	rc = pHlp->pfnSSMGetMem (pSSM, pCtx->mouseShapeInfo.pu8Shape, pCtx->mouseShapeInfo.cbShape);
1969	AssertRCReturn(rc, rc);
1970	}
1971	else
1972	{
1973	pCtx->mouseShapeInfo.pu8Shape = NULL;
1974	}
1975
1976	/* Size of some additional data. For future extensions. */
1977	uint32_t cbExtra = 0;
1978	rc = pHlp->pfnSSMGetU32 (pSSM, &cbExtra);
1979	AssertRCReturn(rc, rc);
1980	#ifdef VBOX_WITH_WDDM
1981	if (cbExtra >= 4)
1982	{
1983	rc = pHlp->pfnSSMGetU32 (pSSM, &pThis->fGuestCaps);
1984	AssertRCReturn(rc, rc);
1985	pThisCC->pDrv->pfnVBVAGuestCapabilityUpdate(pThisCC->pDrv, pThis->fGuestCaps);
1986	cbExtra -= 4;
1987	}
1988	#endif
1989	if (cbExtra > 0)
1990	{
1991	rc = pHlp->pfnSSMSkip(pSSM, cbExtra);
1992	AssertRCReturn(rc, rc);
1993	}
1994
1995	if (uVersion >= VGA_SAVEDSTATE_VERSION_MODE_HINTS)
1996	{
1997	uint32_t cModeHints, cbModeHints;
1998	rc = pHlp->pfnSSMGetU32 (pSSM, &cModeHints);
1999	AssertRCReturn(rc, rc);
2000	rc = pHlp->pfnSSMGetU32 (pSSM, &cbModeHints);
2001	AssertRCReturn(rc, rc);
2002	memset(&pCtx->aModeHints, ~0, sizeof(pCtx->aModeHints));
2003	unsigned iHint;
2004	for (iHint = 0; iHint < cModeHints; ++iHint)
2005	{
2006	if ( cbModeHints <= sizeof(VBVAMODEHINT)
2007	&& iHint < RT_ELEMENTS(pCtx->aModeHints))
2008	rc = pHlp->pfnSSMGetMem(pSSM, &pCtx->aModeHints[iHint],
2009	cbModeHints);
2010	else
2011	rc = pHlp->pfnSSMSkip(pSSM, cbModeHints);
2012	AssertRCReturn(rc, rc);
2013	}
2014	}
2015	}
2016
2017	pCtx->cViews = iView;
2018	LogFlowFunc(("%d views loaded\n", pCtx->cViews));
2019
2020	if (uVersion > VGA_SAVEDSTATE_VERSION_WDDM)
2021	{
2022	bool fLoadCommands;
2023
2024	if (uVersion < VGA_SAVEDSTATE_VERSION_FIXED_PENDVHWA)
2025	{
2026	const char *pcszOsArch = pHlp->pfnSSMHandleHostOSAndArch(pSSM);
2027	Assert(pcszOsArch);
2028	fLoadCommands = !pcszOsArch \|\| RTStrNCmp(pcszOsArch, RT_STR_TUPLE("solaris"));
2029	}
2030	else
2031	fLoadCommands = true;
2032
2033	#ifdef VBOX_WITH_VIDEOHWACCEL
2034	uint32_t cbCmd = sizeof (VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM); /* maximum cmd size */
2035	VBOXVHWACMD *pCmd = vbvaVHWAHHCommandCreate(VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM, 0, cbCmd);
2036	Assert(pCmd);
2037	if(pCmd)
2038	{
2039	VBOXVBVASAVEDSTATECBDATA VhwaData = {0};
2040	VhwaData.pSSM = pSSM;
2041	VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM *pLoad = VBOXVHWACMD_BODY_HOST_HEAP(pCmd, VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM);
2042	pLoad->pSSM = pSSM;
2043	vbvaVHWAHHPost(pDevIns, pThis, pThisCC, pCmd, vboxVBVALoadStatePerformPreCb,
2044	vboxVBVALoadStatePerformPostCb, &VhwaData);
2045	rc = VhwaData.rc;
2046	vbvaVHWAHHCommandRelease(pCmd);
2047	AssertRCReturn(rc, rc);
2048
2049	if (fLoadCommands)
2050	{
2051	rc = vbvaVHWACommandLoadPending(pDevIns, pHlp, pThis, pThisCC, pSSM, uVersion);
2052	AssertRCReturn(rc, rc);
2053	}
2054	}
2055	else
2056	{
2057	rc = VERR_OUT_OF_RESOURCES;
2058	}
2059	#else
2060	uint32_t u32;
2061
2062	for (uint32_t i = 0; i < pThis->cMonitors; ++i)
2063	{
2064	rc = pHlp->pfnSSMGetU32(pSSM, &u32);
2065	AssertRCReturn(rc, rc);
2066
2067	if (u32 != VBOXVBVASAVEDSTATE_VHWAUNAVAILABLE_MAGIC)
2068	{
2069	LogRel(("VBVA: 2D data while 2D is not supported\n"));
2070	return VERR_NOT_SUPPORTED;
2071	}
2072	}
2073
2074	if (fLoadCommands)
2075	{
2076	rc = pHlp->pfnSSMGetU32(pSSM, &u32);
2077	AssertRCReturn(rc, rc);
2078
2079	if (u32)
2080	{
2081	LogRel(("VBVA: 2D pending command while 2D is not supported\n"));
2082	return VERR_NOT_SUPPORTED;
2083	}
2084	}
2085	#endif
2086	}
2087
2088	#ifdef DEBUG_sunlover
2089	dumpctx(pCtx);
2090	#endif
2091	}
2092	}
2093
2094	return rc;
2095	}
2096
2097	int vboxVBVALoadStateDone(PPDMDEVINS pDevIns)
2098	{
2099	PVGASTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVGASTATE);
2100	PVGASTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVGASTATECC);
2101	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2102	if (pCtx)
2103	{
2104	uint32_t iView;
2105	for (iView = 0; iView < pCtx->cViews; iView++)
2106	{
2107	VBVAVIEW *pView = &pCtx->aViews[iView];
2108	if (pView->vbva.guest.pVBVA)
2109	{
2110	int rc = vbvaEnable(pThis, pThisCC, pCtx, iView, pView->vbva.guest.pVBVA,
2111	pView->vbva.u32VBVAOffset, true /* fRestored */);
2112	if (RT_SUCCESS(rc))
2113	vbvaResize(pThisCC, pView, &pView->screen, false);
2114	else
2115	LogRel(("VBVA: can not restore: %Rrc\n", rc));
2116	}
2117	}
2118
2119	if (pCtx->mouseShapeInfo.fSet)
2120	vbvaUpdateMousePointerShape(pThisCC, &pCtx->mouseShapeInfo, true);
2121	}
2122
2123	return VINF_SUCCESS;
2124	}
2125
2126	void VBVARaiseIrq(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC, uint32_t fFlags)
2127	{
2128	int const rcLock = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSectIRQ, VERR_SEM_BUSY);
2129	PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pDevIns, &pThis->CritSectIRQ, rcLock);
2130
2131	const uint32_t fu32CurrentGuestFlags = HGSMIGetHostGuestFlags(pThisCC->pHGSMI);
2132	if ((fu32CurrentGuestFlags & HGSMIHOSTFLAGS_IRQ) == 0)
2133	{
2134	/* No IRQ set yet. */
2135	Assert(pThis->fu32PendingGuestFlags == 0);
2136
2137	HGSMISetHostGuestFlags(pThisCC->pHGSMI, HGSMIHOSTFLAGS_IRQ \| fFlags);
2138
2139	/* If VM is not running, the IRQ will be set in VBVAOnResume. */
2140	const VMSTATE enmVMState = PDMDevHlpVMState(pDevIns);
2141	if ( enmVMState == VMSTATE_RUNNING
2142	\|\| enmVMState == VMSTATE_RUNNING_LS)
2143	PDMDevHlpPCISetIrqNoWait(pDevIns, 0, PDM_IRQ_LEVEL_HIGH);
2144	}
2145	else
2146	{
2147	/* IRQ already set, remember the new flags. */
2148	pThis->fu32PendingGuestFlags \|= HGSMIHOSTFLAGS_IRQ \| fFlags;
2149	}
2150
2151	PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSectIRQ);
2152	}
2153
2154	void VBVAOnResume(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
2155	{
2156	int const rcLock = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSectIRQ, VERR_SEM_BUSY);
2157	PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pDevIns, &pThis->CritSectIRQ, rcLock);
2158
2159	if (HGSMIGetHostGuestFlags(pThisCC->pHGSMI) & HGSMIHOSTFLAGS_IRQ)
2160	PDMDevHlpPCISetIrqNoWait(pDevIns, 0, PDM_IRQ_LEVEL_HIGH);
2161
2162	PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSectIRQ);
2163	}
2164
2165	static int vbvaHandleQueryConf32(PVGASTATECC pThisCC, VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *pConf32)
2166	{
2167	uint32_t const idxQuery = pConf32->u32Index;
2168	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2169	LogFlowFunc(("VBVA_QUERY_CONF32: u32Index %d, u32Value 0x%x\n", idxQuery, pConf32->u32Value));
2170
2171	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2172	uint32_t uValue;
2173	if (idxQuery == VBOX_VBVA_CONF32_MONITOR_COUNT)
2174	uValue = pCtx->cViews;
2175	else if (idxQuery == VBOX_VBVA_CONF32_HOST_HEAP_SIZE)
2176	uValue = _64K; /** @todo a value calculated from the vram size */
2177	else if ( idxQuery == VBOX_VBVA_CONF32_MODE_HINT_REPORTING
2178	\|\| idxQuery == VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING)
2179	uValue = VINF_SUCCESS;
2180	else if (idxQuery == VBOX_VBVA_CONF32_CURSOR_CAPABILITIES)
2181	uValue = VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE;
2182	else if (idxQuery == VBOX_VBVA_CONF32_SCREEN_FLAGS)
2183	uValue = VBVA_SCREEN_F_ACTIVE
2184	\| VBVA_SCREEN_F_DISABLED
2185	\| VBVA_SCREEN_F_BLANK
2186	\| VBVA_SCREEN_F_BLANK2;
2187	else if (idxQuery == VBOX_VBVA_CONF32_MAX_RECORD_SIZE)
2188	uValue = VBVA_MAX_RECORD_SIZE;
2189	else if (idxQuery == UINT32_MAX)
2190	uValue = UINT32_MAX; /* Older GA uses this for sanity checking. See testQueryConf in HGSMIBase.cpp on branches. */
2191	else
2192	ASSERT_GUEST_MSG_FAILED_RETURN(("Invalid index %#x\n", idxQuery), VERR_INVALID_PARAMETER);
2193
2194	pConf32->u32Value = uValue;
2195	return VINF_SUCCESS;
2196	}
2197
2198	static int vbvaHandleSetConf32(VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *pConf32)
2199	{
2200	uint32_t const idxQuery = pConf32->u32Index;
2201	uint32_t const uValue = pConf32->u32Value;
2202	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2203	LogFlowFunc(("VBVA_SET_CONF32: u32Index %d, u32Value 0x%x\n", idxQuery, uValue));
2204
2205	if (idxQuery == VBOX_VBVA_CONF32_MONITOR_COUNT)
2206	{ /* do nothing. this is a const. */ }
2207	else if (idxQuery == VBOX_VBVA_CONF32_HOST_HEAP_SIZE)
2208	{ /* do nothing. this is a const. */ }
2209	else
2210	ASSERT_GUEST_MSG_FAILED_RETURN(("Invalid index %#x (value=%u)\n", idxQuery, uValue), VERR_INVALID_PARAMETER);
2211
2212	RT_NOREF_PV(uValue);
2213	return VINF_SUCCESS;
2214	}
2215
2216	static int vbvaHandleInfoHeap(PVGASTATECC pThisCC, const VBVAINFOHEAP RT_UNTRUSTED_VOLATILE_GUEST *pInfoHeap)
2217	{
2218	uint32_t const offHeap = pInfoHeap->u32HeapOffset;
2219	uint32_t const cbHeap = pInfoHeap->u32HeapSize;
2220	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2221	LogFlowFunc(("VBVA_INFO_HEAP: offset 0x%x, size 0x%x\n", offHeap, cbHeap));
2222
2223	return HGSMIHostHeapSetup(pThisCC->pHGSMI, offHeap, cbHeap);
2224	}
2225
2226	static int vbvaInfoView(PVGASTATE pThis, PVGASTATER3 pThisCC, const VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_GUEST *pView)
2227	{
2228	VBVAINFOVIEW view;
2229	RT_COPY_VOLATILE(view, *pView);
2230	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2231
2232	LogFlowFunc(("VBVA_INFO_VIEW: u32ViewIndex %d, u32ViewOffset 0x%x, u32ViewSize 0x%x, u32MaxScreenSize 0x%x\n",
2233	view.u32ViewIndex, view.u32ViewOffset, view.u32ViewSize, view.u32MaxScreenSize));
2234
2235	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2236	ASSERT_GUEST_LOGREL_MSG_RETURN( view.u32ViewIndex < pCtx->cViews
2237	&& view.u32ViewOffset <= pThis->vram_size
2238	&& view.u32ViewSize <= pThis->vram_size
2239	&& view.u32ViewOffset <= pThis->vram_size - view.u32ViewSize
2240	&& view.u32MaxScreenSize <= view.u32ViewSize,
2241	("index %d(%d), offset 0x%x, size 0x%x, max 0x%x, vram size 0x%x\n",
2242	view.u32ViewIndex, pCtx->cViews, view.u32ViewOffset, view.u32ViewSize,
2243	view.u32MaxScreenSize, pThis->vram_size),
2244	VERR_INVALID_PARAMETER);
2245	RT_UNTRUSTED_VALIDATED_FENCE();
2246
2247	pCtx->aViews[view.u32ViewIndex].view = view;
2248	return VINF_SUCCESS;
2249	}
2250
2251	static int vbvaInfoScreen(PVGASTATECC pThisCC, const VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_GUEST *pScreen)
2252	{
2253	/*
2254	* Copy input into non-volatile buffer.
2255	*/
2256	VBVAINFOSCREEN screen;
2257	RT_COPY_VOLATILE(screen, *pScreen);
2258	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2259	LogRel2(("VBVA: InfoScreen: [%d] @%d,%d %dx%d, line 0x%x, BPP %d, flags 0x%x\n",
2260	screen.u32ViewIndex, screen.i32OriginX, screen.i32OriginY,
2261	screen.u32Width, screen.u32Height,
2262	screen.u32LineSize, screen.u16BitsPerPixel, screen.u16Flags));
2263
2264	/*
2265	* Validate input.
2266	*/
2267	/* Allow screen.u16BitsPerPixel == 0 because legacy guest code used it for screen blanking. */
2268	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2269	ASSERT_GUEST_LOGREL_MSG_RETURN(screen.u32ViewIndex < pCtx->cViews,
2270	("Screen index %#x is out of bound (cViews=%#x)\n", screen.u32ViewIndex, pCtx->cViews),
2271	VERR_INVALID_PARAMETER);
2272	ASSERT_GUEST_LOGREL_MSG_RETURN( screen.u16BitsPerPixel <= 32
2273	&& screen.u32Width <= UINT16_MAX
2274	&& screen.u32Height <= UINT16_MAX
2275	&& screen.u32LineSize <= UINT16_MAX * UINT32_C(4),
2276	("One or more values out of range: u16BitsPerPixel=%#x u32Width=%#x u32Height=%#x u32LineSize=%#x\n",
2277	screen.u16BitsPerPixel, screen.u32Width, screen.u32Height, screen.u32LineSize),
2278	VERR_INVALID_PARAMETER);
2279	RT_UNTRUSTED_VALIDATED_FENCE();
2280
2281	const VBVAINFOVIEW *pView = &pCtx->aViews[screen.u32ViewIndex].view;
2282	const uint32_t cbPerPixel = (screen.u16BitsPerPixel + 7) / 8;
2283	ASSERT_GUEST_LOGREL_MSG_RETURN(screen.u32Width <= screen.u32LineSize / (cbPerPixel ? cbPerPixel : 1),
2284	("u32Width=%#x u32LineSize=%3x cbPerPixel=%#x\n",
2285	screen.u32Width, screen.u32LineSize, cbPerPixel),
2286	VERR_INVALID_PARAMETER);
2287
2288	const uint64_t u64ScreenSize = (uint64_t)screen.u32LineSize * screen.u32Height;
2289
2290	ASSERT_GUEST_LOGREL_MSG_RETURN( screen.u32StartOffset <= pView->u32ViewSize
2291	&& u64ScreenSize <= pView->u32MaxScreenSize
2292	&& screen.u32StartOffset <= pView->u32ViewSize - (uint32_t)u64ScreenSize,
2293	("u32StartOffset=%#x u32ViewSize=%#x u64ScreenSize=%#RX64 u32MaxScreenSize=%#x\n",
2294	screen.u32StartOffset, pView->u32ViewSize, u64ScreenSize, pView->u32MaxScreenSize),
2295	VERR_INVALID_PARAMETER);
2296	RT_UNTRUSTED_VALIDATED_FENCE();
2297
2298	/*
2299	* Do the job.
2300	*/
2301	vbvaResize(pThisCC, &pCtx->aViews[screen.u32ViewIndex], &screen, true);
2302	return VINF_SUCCESS;
2303	}
2304
2305	#ifdef UNUSED_FUNCTION
2306	int VBVAGetInfoViewAndScreen(PVGASTATE pThis, PVGASTATECC pThisCC, uint32_t u32ViewIndex, VBVAINFOVIEW pView, VBVAINFOSCREEN pScreen)
2307	{
2308	if (u32ViewIndex >= pThis->cMonitors)
2309	return VERR_INVALID_PARAMETER;
2310
2311	PHGSMIINSTANCE pIns = pThisCC->pHGSMI;
2312	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext (pIns);
2313
2314	if (pView)
2315	*pView = pCtx->aViews[u32ViewIndex].view;
2316
2317	if (pScreen)
2318	*pScreen = pCtx->aViews[u32ViewIndex].screen;
2319
2320	return VINF_SUCCESS;
2321	}
2322	#endif
2323
2324	static int vbvaHandleEnable(PVGASTATE pThis, PVGASTATER3 pThisCC, uint32_t fEnableFlags, uint32_t offEnable, uint32_t idScreen)
2325	{
2326	LogFlowFunc(("VBVA_ENABLE[%u]: fEnableFlags=0x%x offEnable=%#x\n", idScreen, fEnableFlags, offEnable));
2327	PHGSMIINSTANCE pIns = pThisCC->pHGSMI;
2328	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pIns);
2329
2330	/*
2331	* Validate input.
2332	*/
2333	ASSERT_GUEST_LOGREL_MSG_RETURN(idScreen < pCtx->cViews, ("idScreen=%#x cViews=%#x\n", idScreen, pCtx->cViews), VERR_INVALID_PARAMETER);
2334	ASSERT_GUEST_LOGREL_MSG_RETURN( (fEnableFlags & (VBVA_F_ENABLE \| VBVA_F_DISABLE)) == VBVA_F_ENABLE
2335	\|\| (fEnableFlags & (VBVA_F_ENABLE \| VBVA_F_DISABLE)) == VBVA_F_DISABLE,
2336	("fEnableFlags=%#x\n", fEnableFlags),
2337	VERR_INVALID_PARAMETER);
2338	if (fEnableFlags & VBVA_F_ENABLE)
2339	{
2340	ASSERT_GUEST_LOGREL_MSG_RETURN(offEnable < pThis->vram_size,
2341	("offEnable=%#x vram_size=%#x\n", offEnable, pThis->vram_size),
2342	VERR_INVALID_PARAMETER);
2343	if (fEnableFlags & VBVA_F_ABSOFFSET)
2344	/* Offset from VRAM start. */
2345	ASSERT_GUEST_LOGREL_MSG_RETURN( pThis->vram_size >= RT_UOFFSETOF(VBVABUFFER, au8Data)
2346	&& offEnable <= pThis->vram_size - RT_UOFFSETOF(VBVABUFFER, au8Data),
2347	("offEnable=%#x vram_size=%#x\n", offEnable, pThis->vram_size),
2348	VERR_INVALID_PARAMETER);
2349	else
2350	{
2351	/* Offset from the view start. We'd be using idScreen here to fence required. */
2352	RT_UNTRUSTED_VALIDATED_FENCE();
2353	const VBVAINFOVIEW *pView = &pCtx->aViews[idScreen].view;
2354	ASSERT_GUEST_LOGREL_MSG_RETURN( pThis->vram_size - offEnable >= pView->u32ViewOffset
2355	&& pView->u32ViewSize >= RT_UOFFSETOF(VBVABUFFER, au8Data)
2356	&& offEnable <= pView->u32ViewSize - RT_UOFFSETOF(VBVABUFFER, au8Data),
2357	("offEnable=%#x vram_size=%#x view: %#x LB %#x\n",
2358	offEnable, pThis->vram_size, pView->u32ViewOffset, pView->u32ViewSize),
2359	VERR_INVALID_PARAMETER);
2360	offEnable += pView->u32ViewOffset;
2361	}
2362	ASSERT_GUEST_LOGREL_MSG_RETURN(HGSMIIsOffsetValid(pIns, offEnable),
2363	("offEnable=%#x area %#x LB %#x\n",
2364	offEnable, HGSMIGetAreaOffset(pIns), HGSMIGetAreaSize(pIns)),
2365	VERR_INVALID_PARAMETER);
2366	}
2367	RT_UNTRUSTED_VALIDATED_FENCE();
2368
2369	/*
2370	* Execute.
2371	*/
2372	int rc = VINF_SUCCESS;
2373	if (fEnableFlags & VBVA_F_ENABLE)
2374	{
2375	VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST *pVBVA
2376	= (VBVABUFFER RT_UNTRUSTED_VOLATILE_GUEST *)HGSMIOffsetToPointerHost(pIns, offEnable);
2377	ASSERT_GUEST_LOGREL_RETURN(pVBVA, VERR_INVALID_PARAMETER); /* already check above, but let's be careful. */
2378
2379	/* Process any pending orders and empty the VBVA ring buffer. */
2380	vbvaFlush(pThis, pThisCC, pCtx);
2381
2382	rc = vbvaEnable(pThis, pThisCC, pCtx, idScreen, pVBVA, offEnable, false /* fRestored */);
2383	if (RT_FAILURE(rc))
2384	LogRelMax(8, ("VBVA: can not enable: %Rrc\n", rc));
2385	}
2386	else
2387	rc = vbvaDisable(pThis, pThisCC, pCtx, idScreen);
2388	return rc;
2389	}
2390
2391	static int vbvaHandleQueryModeHints(PVGASTATECC pThisCC, VBVAQUERYMODEHINTS volatile *pQueryModeHints, HGSMISIZE cbBuffer)
2392	{
2393	PHGSMIINSTANCE pIns = pThisCC->pHGSMI;
2394	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pIns);
2395
2396	/*
2397	* Copy and validate the request.
2398	*/
2399	uint16_t const cHintsQueried = pQueryModeHints->cHintsQueried;
2400	uint16_t const cbHintStructureGuest = pQueryModeHints->cbHintStructureGuest;
2401	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2402
2403	LogRelFlowFunc(("VBVA: HandleQueryModeHints: cHintsQueried=%RU16, cbHintStructureGuest=%RU16\n",
2404	cHintsQueried, cbHintStructureGuest));
2405	ASSERT_GUEST_RETURN(cbBuffer >= sizeof(VBVAQUERYMODEHINTS) + (uint32_t)cHintsQueried * cbHintStructureGuest,
2406	VERR_INVALID_PARAMETER);
2407	RT_UNTRUSTED_VALIDATED_FENCE();
2408
2409	/*
2410	* Produce the requested data.
2411	*/
2412	uint8_t pbHint = (uint8_t )(pQueryModeHints + 1);
2413	memset(pbHint, ~0, cbBuffer - sizeof(VBVAQUERYMODEHINTS));
2414
2415	for (unsigned iHint = 0; iHint < cHintsQueried && iHint < VBOX_VIDEO_MAX_SCREENS; ++iHint)
2416	{
2417	memcpy(pbHint, &pCtx->aModeHints[iHint], RT_MIN(cbHintStructureGuest, sizeof(VBVAMODEHINT)));
2418	pbHint += cbHintStructureGuest;
2419	Assert((uintptr_t)(pbHint - (uint8_t *)pQueryModeHints) <= cbBuffer);
2420	}
2421
2422	return VINF_SUCCESS;
2423	}
2424
2425	/*
2426	*
2427	* New VBVA uses a new interface id: #define VBE_DISPI_ID_VBOX_VIDEO 0xBE01
2428	*
2429	* VBVA uses two 32 bits IO ports to write VRAM offsets of shared memory blocks for commands.
2430	* Read Write
2431	* Host port 0x3b0 to process completed
2432	* Guest port 0x3d0 control value? to process
2433	*
2434	*/
2435
2436	static DECLCALLBACK(void) vbvaNotifyGuest(void *pvCallback)
2437	{
2438	#if defined(VBOX_WITH_HGSMI) && (defined(VBOX_WITH_VIDEOHWACCEL) \|\| defined(VBOX_WITH_VDMA) \|\| defined(VBOX_WITH_WDDM))
2439	PPDMDEVINS pDevIns = (PPDMDEVINS)pvCallback;
2440	PVGASTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVGASTATE);
2441	PVGASTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVGASTATECC);
2442	VBVARaiseIrq(pDevIns, pThis, pThisCC, 0);
2443	#else
2444	NOREF(pvCallback);
2445	/* Do nothing. Later the VMMDev/VGA IRQ can be used for the notification. */
2446	#endif
2447	}
2448
2449	/**
2450	* The guest submitted a command buffer (hit VGA_PORT_HGSMI_GUEST).
2451	*
2452	* Verify the buffer size and invoke corresponding handler.
2453	*
2454	* @return VBox status code.
2455	* @param pvHandler The VBVA channel context.
2456	* @param u16ChannelInfo Command code.
2457	* @param pvBuffer HGSMI buffer with command data. Considered volatile!
2458	* @param cbBuffer Size of command data.
2459	*
2460	* @thread EMT
2461	*/
2462	static DECLCALLBACK(int) vbvaChannelHandler(void *pvHandler, uint16_t u16ChannelInfo,
2463	void RT_UNTRUSTED_VOLATILE_GUEST *pvBuffer, HGSMISIZE cbBuffer)
2464	{
2465	int rc = VINF_SUCCESS;
2466
2467	LogFlowFunc(("pvHandler %p, u16ChannelInfo %d, pvBuffer %p, cbBuffer %u\n", pvHandler, u16ChannelInfo, pvBuffer, cbBuffer));
2468
2469	PPDMDEVINS pDevIns = (PPDMDEVINS)pvHandler;
2470	PVGASTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVGASTATE);
2471	PVGASTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVGASTATECC);
2472	PHGSMIINSTANCE pIns = pThisCC->pHGSMI;
2473	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pIns);
2474
2475	switch (u16ChannelInfo)
2476	{
2477	#ifdef VBOX_WITH_VDMA
2478	case VBVA_VDMA_CMD:
2479	if (cbBuffer >= VBoxSHGSMIBufferHeaderSize() + sizeof(VBOXVDMACBUF_DR))
2480	{
2481	VBOXVDMACBUF_DR RT_UNTRUSTED_VOLATILE_GUEST *pCmd
2482	= (VBOXVDMACBUF_DR RT_UNTRUSTED_VOLATILE_GUEST )VBoxSHGSMIBufferData((VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer);
2483	vboxVDMACommand(pThisCC->pVdma, pCmd, cbBuffer - VBoxSHGSMIBufferHeaderSize());
2484	rc = VINF_SUCCESS;
2485	}
2486	else
2487	rc = VERR_INVALID_PARAMETER;
2488	break;
2489
2490	case VBVA_VDMA_CTL:
2491	if (cbBuffer >= VBoxSHGSMIBufferHeaderSize() + sizeof(VBOXVDMA_CTL))
2492	{
2493	VBOXVDMA_CTL RT_UNTRUSTED_VOLATILE_GUEST *pCmd
2494	= (VBOXVDMA_CTL RT_UNTRUSTED_VOLATILE_GUEST )VBoxSHGSMIBufferData((VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer);
2495	vboxVDMAControl(pThisCC->pVdma, pCmd, cbBuffer - VBoxSHGSMIBufferHeaderSize());
2496	}
2497	else
2498	rc = VERR_INVALID_PARAMETER;
2499	break;
2500	#endif /* VBOX_WITH_VDMA */
2501
2502	case VBVA_QUERY_CONF32:
2503	if (cbBuffer >= sizeof(VBVACONF32))
2504	rc = vbvaHandleQueryConf32(pThisCC, (VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2505	else
2506	rc = VERR_INVALID_PARAMETER;
2507	break;
2508
2509	case VBVA_SET_CONF32:
2510	if (cbBuffer >= sizeof(VBVACONF32))
2511	rc = vbvaHandleSetConf32((VBVACONF32 RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2512	else
2513	rc = VERR_INVALID_PARAMETER;
2514	break;
2515
2516	case VBVA_INFO_VIEW:
2517	/* Expect at least one VBVAINFOVIEW structure. */
2518	rc = VERR_INVALID_PARAMETER;
2519	if (cbBuffer >= sizeof(VBVAINFOVIEW))
2520	{
2521	/* Guest submits an array of VBVAINFOVIEW structures. */
2522	const VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_GUEST pView = (VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2523	for (;
2524	cbBuffer >= sizeof(VBVAINFOVIEW);
2525	++pView, cbBuffer -= sizeof(VBVAINFOVIEW))
2526	{
2527	rc = vbvaInfoView(pThis, pThisCC, pView);
2528	if (RT_FAILURE(rc))
2529	break;
2530	}
2531	}
2532	break;
2533
2534	case VBVA_INFO_HEAP:
2535	if (cbBuffer >= sizeof(VBVAINFOHEAP))
2536	rc = vbvaHandleInfoHeap(pThisCC, (VBVAINFOHEAP RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2537	else
2538	rc = VERR_INVALID_PARAMETER;
2539	break;
2540
2541	case VBVA_FLUSH:
2542	if (cbBuffer >= sizeof(VBVAFLUSH))
2543	rc = vbvaFlush(pThis, pThisCC, pCtx);
2544	else
2545	rc = VERR_INVALID_PARAMETER;
2546	break;
2547
2548	case VBVA_INFO_SCREEN:
2549	rc = VERR_INVALID_PARAMETER;
2550	if (cbBuffer >= sizeof(VBVAINFOSCREEN))
2551	rc = vbvaInfoScreen(pThisCC, (VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2552	break;
2553
2554	case VBVA_ENABLE:
2555	rc = VERR_INVALID_PARAMETER;
2556	if (cbBuffer >= sizeof(VBVAENABLE))
2557	{
2558	VBVAENABLE RT_UNTRUSTED_VOLATILE_GUEST pVbvaEnable = (VBVAENABLE RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2559	uint32_t const fEnableFlags = pVbvaEnable->u32Flags;
2560	uint32_t const offEnable = pVbvaEnable->u32Offset;
2561	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2562
2563	uint32_t idScreen;
2564	if (fEnableFlags & VBVA_F_EXTENDED)
2565	{
2566	ASSERT_GUEST_STMT_BREAK(cbBuffer >= sizeof(VBVAENABLE_EX), rc = VERR_INVALID_PARAMETER);
2567	idScreen = ((VBVAENABLE_EX RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer)->u32ScreenId;
2568	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2569	}
2570	else
2571	idScreen = vbvaViewFromBufferPtr(pIns, pCtx, pvBuffer);
2572
2573	rc = vbvaHandleEnable(pThis, pThisCC, fEnableFlags, offEnable, idScreen);
2574	pVbvaEnable->i32Result = rc;
2575	}
2576	break;
2577
2578	case VBVA_MOUSE_POINTER_SHAPE:
2579	if (cbBuffer >= sizeof(VBVAMOUSEPOINTERSHAPE))
2580	{
2581	VBVAMOUSEPOINTERSHAPE RT_UNTRUSTED_VOLATILE_GUEST *pShape
2582	= (VBVAMOUSEPOINTERSHAPE RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer;
2583	rc = vbvaMousePointerShape(pThisCC, pCtx, pShape, cbBuffer);
2584	pShape->i32Result = rc;
2585	}
2586	else
2587	rc = VERR_INVALID_PARAMETER;
2588	break;
2589
2590
2591	#ifdef VBOX_WITH_VIDEOHWACCEL
2592	case VBVA_VHWA_CMD:
2593	if (cbBuffer >= VBOXVHWACMD_HEADSIZE())
2594	{
2595	vbvaVHWAHandleCommand(pDevIns, pThis, pThisCC, (VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer);
2596	rc = VINF_SUCCESS;
2597	}
2598	else
2599	rc = VERR_INVALID_PARAMETER;
2600	break;
2601	#endif
2602
2603	#ifdef VBOX_WITH_WDDM
2604	case VBVA_INFO_CAPS:
2605	if (cbBuffer >= sizeof(VBVACAPS))
2606	{
2607	VBVACAPS RT_UNTRUSTED_VOLATILE_GUEST pCaps = (VBVACAPS RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2608	pThis->fGuestCaps = pCaps->fCaps;
2609	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2610
2611	pThisCC->pDrv->pfnVBVAGuestCapabilityUpdate(pThisCC->pDrv, pThis->fGuestCaps);
2612	pCaps->rc = rc = VINF_SUCCESS;
2613	}
2614	else
2615	rc = VERR_INVALID_PARAMETER;
2616	break;
2617	#endif
2618
2619	case VBVA_SCANLINE_CFG:
2620	if (cbBuffer >= sizeof(VBVASCANLINECFG))
2621	{
2622	VBVASCANLINECFG RT_UNTRUSTED_VOLATILE_GUEST pCfg = (VBVASCANLINECFG RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2623	pThis->fScanLineCfg = pCfg->fFlags;
2624	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2625
2626	pCfg->rc = rc = VINF_SUCCESS;
2627	}
2628	else
2629	rc = VERR_INVALID_PARAMETER;
2630	break;
2631
2632	case VBVA_QUERY_MODE_HINTS:
2633	if (cbBuffer >= sizeof(VBVAQUERYMODEHINTS))
2634	{
2635	VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_GUEST *pQueryModeHints
2636	= (VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer;
2637	rc = vbvaHandleQueryModeHints(pThisCC, pQueryModeHints, cbBuffer);
2638	pQueryModeHints->rc = rc;
2639	}
2640	else
2641	rc = VERR_INVALID_PARAMETER;
2642	break;
2643
2644	case VBVA_REPORT_INPUT_MAPPING:
2645	if (cbBuffer >= sizeof(VBVAREPORTINPUTMAPPING))
2646	{
2647	VBVAREPORTINPUTMAPPING inputMapping;
2648	{
2649	VBVAREPORTINPUTMAPPING RT_UNTRUSTED_VOLATILE_GUEST *pInputMapping
2650	= (VBVAREPORTINPUTMAPPING RT_UNTRUSTED_VOLATILE_GUEST *)pvBuffer;
2651	inputMapping.x = pInputMapping->x;
2652	inputMapping.y = pInputMapping->y;
2653	inputMapping.cx = pInputMapping->cx;
2654	inputMapping.cy = pInputMapping->cy;
2655	}
2656	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2657
2658	LogRelFlowFunc(("VBVA: ChannelHandler: VBVA_REPORT_INPUT_MAPPING: x=%RI32, y=%RI32, cx=%RU32, cy=%RU32\n",
2659	inputMapping.x, inputMapping.y, inputMapping.cx, inputMapping.cy));
2660	pThisCC->pDrv->pfnVBVAInputMappingUpdate(pThisCC->pDrv,
2661	inputMapping.x, inputMapping.y,
2662	inputMapping.cx, inputMapping.cy);
2663	rc = VINF_SUCCESS;
2664	}
2665	else
2666	rc = VERR_INVALID_PARAMETER;
2667	break;
2668
2669	case VBVA_CURSOR_POSITION:
2670	if (cbBuffer >= sizeof(VBVACURSORPOSITION))
2671	{
2672	VBVACURSORPOSITION RT_UNTRUSTED_VOLATILE_GUEST pReport = (VBVACURSORPOSITION RT_UNTRUSTED_VOLATILE_GUEST )pvBuffer;
2673	VBVACURSORPOSITION Report;
2674	Report.fReportPosition = pReport->fReportPosition;
2675	Report.x = pReport->x;
2676	Report.y = pReport->y;
2677	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2678
2679	LogRelFlowFunc(("VBVA: ChannelHandler: VBVA_CURSOR_POSITION: fReportPosition=%RTbool, Id=%RU32, x=%RU32, y=%RU32\n",
2680	RT_BOOL(Report.fReportPosition), vbvaViewFromBufferPtr(pIns, pCtx, pvBuffer), Report.x, Report.y));
2681
2682	pThisCC->pDrv->pfnVBVAReportCursorPosition(pThisCC->pDrv, RT_BOOL(Report.fReportPosition), vbvaViewFromBufferPtr(pIns, pCtx, pvBuffer), Report.x, Report.y);
2683	/* This was only ever briefly used by the guest, and a value
2684	* of zero in both was taken to mean "ignore". */
2685	pReport->x = 0;
2686	pReport->y = 0;
2687	rc = VINF_SUCCESS;
2688	}
2689	else
2690	rc = VERR_INVALID_PARAMETER;
2691	break;
2692
2693	default:
2694	Log(("Unsupported VBVA guest command %d (%#x)!!!\n", u16ChannelInfo, u16ChannelInfo));
2695	break;
2696	}
2697
2698	return rc;
2699	}
2700
2701	/** When VBVA is paused, the VGA device is allowed to work but
2702	* no HGSMI etc state is changed.
2703	*/
2704	static void vbvaPause(PVGASTATECC pThisCC, bool fPause)
2705	{
2706	if (!pThisCC \|\| !pThisCC->pHGSMI)
2707	return;
2708
2709	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2710	if (pCtx)
2711	pCtx->fPaused = fPause;
2712	}
2713
2714	bool VBVAIsPaused(PVGASTATECC pThisCC)
2715	{
2716	if (pThisCC && pThisCC->pHGSMI)
2717	{
2718	const VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2719	if (pCtx && pCtx->cViews)
2720	{
2721	/* If VBVA is enabled at all. */
2722	const VBVAVIEW *pView = &pCtx->aViews[0];
2723	if (pView->vbva.guest.pVBVA)
2724	return pCtx->fPaused;
2725	}
2726	}
2727	/* VBVA is disabled. */
2728	return true;
2729	}
2730
2731	void VBVAOnVBEChanged(PVGASTATE pThis, PVGASTATECC pThisCC)
2732	{
2733	/* The guest does not depend on host handling the VBE registers. */
2734	if (pThis->fGuestCaps & VBVACAPS_USE_VBVA_ONLY)
2735	return;
2736
2737	vbvaPause(pThisCC, (pThis->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) == 0);
2738	}
2739
2740	void VBVAReset(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
2741	{
2742	if (!pThis \|\| !pThisCC->pHGSMI)
2743	return;
2744
2745	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2746
2747	#ifdef VBOX_WITH_VIDEOHWACCEL
2748	vbvaVHWAReset(pDevIns, pThis, pThisCC);
2749	#endif
2750
2751	HGSMIReset(pThisCC->pHGSMI);
2752	/* Make sure the IRQ is reset. */
2753	PDMDevHlpPCISetIrq(pDevIns, 0, PDM_IRQ_LEVEL_LOW);
2754	pThis->fu32PendingGuestFlags = 0;
2755
2756	if (pCtx)
2757	{
2758	vbvaFlush(pThis, pThisCC, pCtx);
2759
2760	for (unsigned idScreen = 0; idScreen < pCtx->cViews; idScreen++)
2761	vbvaDisable(pThis, pThisCC, pCtx, idScreen);
2762
2763	pCtx->mouseShapeInfo.fSet = false;
2764	RTMemFreeZ(pCtx->mouseShapeInfo.pu8Shape, pCtx->mouseShapeInfo.cbAllocated);
2765	pCtx->mouseShapeInfo.pu8Shape = NULL;
2766	pCtx->mouseShapeInfo.cbAllocated = 0;
2767	pCtx->mouseShapeInfo.cbShape = 0;
2768	}
2769
2770	}
2771
2772	int VBVAUpdateDisplay(PVGASTATE pThis, PVGASTATECC pThisCC)
2773	{
2774	int rc = VERR_NOT_SUPPORTED; /* Assuming that the VGA device will have to do updates. */
2775
2776	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2777	if (pCtx)
2778	{
2779	if (!pCtx->fPaused)
2780	{
2781	rc = vbvaFlush(pThis, pThisCC, pCtx);
2782	if (RT_SUCCESS(rc))
2783	{
2784	if (!pCtx->aViews[0].vbva.guest.pVBVA)
2785	{
2786	/* VBVA is not enabled for the first view, so VGA device must do updates. */
2787	rc = VERR_NOT_SUPPORTED;
2788	}
2789	}
2790	}
2791	}
2792
2793	return rc;
2794	}
2795
2796	static int vbvaSendModeHintWorker(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC,
2797	uint32_t cx, uint32_t cy, uint32_t cBPP, uint32_t iDisplay, uint32_t dx,
2798	uint32_t dy, uint32_t fEnabled,
2799	uint32_t fNotifyGuest)
2800	{
2801	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2802	/** @note See Display::setVideoModeHint: "It is up to the guest to decide
2803	* whether the hint is valid. Therefore don't do any VRAM sanity checks
2804	* here! */
2805	if (iDisplay >= RT_MIN(pThis->cMonitors, RT_ELEMENTS(pCtx->aModeHints)))
2806	return VERR_OUT_OF_RANGE;
2807	pCtx->aModeHints[iDisplay].magic = VBVAMODEHINT_MAGIC;
2808	pCtx->aModeHints[iDisplay].cx = cx;
2809	pCtx->aModeHints[iDisplay].cy = cy;
2810	pCtx->aModeHints[iDisplay].cBPP = cBPP;
2811	pCtx->aModeHints[iDisplay].dx = dx;
2812	pCtx->aModeHints[iDisplay].dy = dy;
2813	pCtx->aModeHints[iDisplay].fEnabled = fEnabled;
2814	if (fNotifyGuest && pThis->fGuestCaps & VBVACAPS_IRQ && pThis->fGuestCaps & VBVACAPS_VIDEO_MODE_HINTS)
2815	VBVARaiseIrq(pDevIns, pThis, pThisCC, HGSMIHOSTFLAGS_HOTPLUG);
2816	return VINF_SUCCESS;
2817	}
2818
2819
2820	/**
2821	* @interface_method_impl{PDMIDISPLAYPORT,pfnSendModeHint}
2822	*/
2823	DECLCALLBACK(int) vbvaR3PortSendModeHint(PPDMIDISPLAYPORT pInterface, uint32_t cx, uint32_t cy, uint32_t cBPP,
2824	uint32_t iDisplay, uint32_t dx, uint32_t dy, uint32_t fEnabled, uint32_t fNotifyGuest)
2825	{
2826	PVGASTATECC pThisCC = RT_FROM_MEMBER(pInterface, VGASTATECC, IPort);
2827	PPDMDEVINS pDevIns = pThisCC->pDevIns;
2828	PVGASTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVGASTATE);
2829	int rc = PDMDevHlpCritSectEnter(pDevIns, &pThis->CritSect, VERR_SEM_BUSY);
2830	AssertRCReturn(rc, rc);
2831
2832	rc = vbvaSendModeHintWorker(pDevIns, pThis, pThisCC, cx, cy, cBPP, iDisplay, dx, dy, fEnabled, fNotifyGuest);
2833
2834	PDMDevHlpCritSectLeave(pDevIns, &pThis->CritSect);
2835	return rc;
2836	}
2837
2838	int VBVAInit(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
2839	{
2840	int rc = HGSMICreate(&pThisCC->pHGSMI,
2841	pDevIns,
2842	"VBVA",
2843	0,
2844	pThisCC->pbVRam,
2845	pThis->vram_size,
2846	vbvaNotifyGuest,
2847	pDevIns,
2848	sizeof(VBVACONTEXT));
2849	if (RT_SUCCESS(rc))
2850	{
2851	rc = HGSMIHostChannelRegister(pThisCC->pHGSMI,
2852	HGSMI_CH_VBVA,
2853	vbvaChannelHandler,
2854	pDevIns);
2855	if (RT_SUCCESS(rc))
2856	{
2857	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pThisCC->pHGSMI);
2858	pCtx->cViews = pThis->cMonitors;
2859	pCtx->fPaused = true;
2860	memset(pCtx->aModeHints, ~0, sizeof(pCtx->aModeHints));
2861	}
2862	}
2863
2864	return rc;
2865
2866	}
2867
2868	void VBVADestroy(PVGASTATECC pThisCC)
2869	{
2870	PHGSMIINSTANCE pHgsmi = pThisCC->pHGSMI;
2871	if (pHgsmi)
2872	{
2873	VBVACONTEXT pCtx = (VBVACONTEXT )HGSMIContext(pHgsmi);
2874	pCtx->mouseShapeInfo.fSet = false;
2875	RTMemFreeZ(pCtx->mouseShapeInfo.pu8Shape, pCtx->mouseShapeInfo.cbAllocated);
2876	pCtx->mouseShapeInfo.pu8Shape = NULL;
2877	pCtx->mouseShapeInfo.cbAllocated = 0;
2878	pCtx->mouseShapeInfo.cbShape = 0;
2879
2880	HGSMIDestroy(pHgsmi);
2881	pThisCC->pHGSMI = NULL;
2882	}
2883	}
2884

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA_VBVA.cpp@ 97405

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