vboxutils.c@ 6587

Last change on this file since 6587 was 6587, checked in by vboxsync, 17 years ago
Additions/x11: get rid of gxx_personality_v0 on x11/Linux guests
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 31.1 KB

Line
1	/** @file
2	*
3	* Linux Additions X11 graphics driver helper module
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 innotek GmbH
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	#include <VBox/VBoxGuest.h>
19
20	#include <xf86Pci.h>
21	#include <Pci.h>
22
23	#include "xf86.h"
24	#define NEED_XF86_TYPES
25	#include "xf86_ansic.h"
26	#include "compiler.h"
27	#include "cursorstr.h"
28
29	#ifndef RT_OS_SOLARIS
30	#include <asm/ioctl.h>
31	#endif
32
33	#include "vboxvideo.h"
34
35	#define VBOX_MAX_CURSOR_WIDTH 64
36	#define VBOX_MAX_CURSOR_HEIGHT 64
37
38	#if 0
39	#define DEBUG_X
40	#endif
41	#ifdef DEBUG_X
42	#define TRACE_ENTRY() for (;;) { \
43	ErrorF ("%s\n", __FUNCTION__); \
44	break; \
45	}
46	#define PUT_PIXEL(c) ErrorF ("%c", c)
47	#define dolog(...) ErrorF (__VA_ARGS__)
48	#else
49	#define PUT_PIXEL(c) (void) c
50	#define TRACE_ENTRY() (void) 0
51	#define dolog(...)
52	#endif
53
54	/** Macro to printf an error message and return from a function */
55	#define RETERROR(scrnIndex, RetVal, ...) \
56	do \
57	{ \
58	xf86DrvMsg(scrnIndex, X_ERROR, __VA_ARGS__); \
59	return RetVal; \
60	} \
61	while (0)
62
63	#ifdef DEBUG_X
64	static void vbox_show_shape (unsigned short w, unsigned short h,
65	CARD32 bg, unsigned char *image)
66	{
67	size_t x, y;
68	unsigned short pitch;
69	CARD32 *color;
70	unsigned char *mask;
71	size_t size_mask;
72
73	image += offsetof (VMMDevReqMousePointer, pointerData);
74	mask = image;
75	pitch = (w + 7) / 8;
76	size_mask = (pitch * h + 3) & ~3;
77	color = (CARD32 *) (image + size_mask);
78
79	TRACE_ENTRY ();
80	for (y = 0; y < h; ++y, mask += pitch, color += w)
81	{
82	for (x = 0; x < w; ++x)
83	{
84	if (mask[x / 8] & (1 << (7 - (x % 8))))
85	ErrorF (" ");
86
87	else
88	{
89	CARD32 c = color[x];
90	if (c == bg)
91	ErrorF ("Y");
92	else
93	ErrorF ("X");
94	}
95	}
96	ErrorF ("\n");
97	}
98	}
99	#endif
100
101	static Bool vbox_vmmcall (ScrnInfoPtr pScrn, VBOXPtr pVBox,
102	VMMDevRequestHeader *hdrp)
103	{
104	int err;
105
106	TRACE_ENTRY ();
107	#ifdef RT_OS_SOLARIS
108	err = vbglR3GRPerform(hdrp);
109	if (RT_FAILURE(err))
110	{
111	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VbglR3Perform failed. rc=%d\n", err);
112	err = -1;
113	}
114	#else
115	err = ioctl (pVBox->vbox_fd, IOCTL_VBOXGUEST_VMMREQUEST, hdrp);
116	#endif
117	if (err < 0)
118	RETERROR(pScrn->scrnIndex, FALSE,
119	"Ioctl call failed during a request to the virtual machine: %s\n",
120	strerror (errno));
121	else
122	if (VBOX_FAILURE (hdrp->rc))
123	RETERROR(pScrn->scrnIndex, FALSE,
124	"A request to the virtual machine returned %d\n",
125	hdrp->rc);
126
127	/* success */
128	return TRUE;
129	}
130
131	static Bool
132	vbox_host_can_hwcursor(ScrnInfoPtr pScrn, VBOXPtr pVBox)
133	{
134	VMMDevReqMouseStatus req;
135	int rc;
136	int scrnIndex = pScrn->scrnIndex;
137
138	#ifdef RT_OS_SOLARIS
139	uint32_t fFeatures;
140	NOREF(req);
141	rc = VbglR3GetMouseStatus(&fFeatures, NULL, NULL);
142	if (VBOX_FAILURE(rc))
143	RETERROR(scrnIndex, FALSE,
144	"Unable to determine whether the virtual machine supports mouse pointer integration - request initialization failed with return code %d\n", rc);
145
146	return (fFeatures & VBOXGUEST_MOUSE_HOST_CANNOT_HWPOINTER) ? FALSE : TRUE;
147	#else
148	rc = vmmdevInitRequest ((VMMDevRequestHeader*)&req, VMMDevReq_GetMouseStatus);
149	if (VBOX_FAILURE (rc))
150	RETERROR(scrnIndex, FALSE,
151	"Unable to determine whether the virtual machine supports mouse pointer integration - request initialization failed with return code %d\n", rc);
152
153	if (ioctl(pVBox->vbox_fd, IOCTL_VBOXGUEST_VMMREQUEST, (void*)&req) < 0)
154	RETERROR(scrnIndex, FALSE,
155	"Unable to determine whether the virtual machine supports mouse pointer integration - request system call failed: %s.\n",
156	strerror(errno));
157
158	return (req.mouseFeatures & VBOXGUEST_MOUSE_HOST_CANNOT_HWPOINTER) ? FALSE : TRUE;
159	#endif
160	}
161
162	void
163	vbox_close(ScrnInfoPtr pScrn, VBOXPtr pVBox)
164	{
165	TRACE_ENTRY ();
166
167	xfree (pVBox->reqp);
168	pVBox->reqp = NULL;
169
170	#ifdef RT_OS_SOLARIS
171	VbglR3Term();
172	#else
173	if (close (pVBox->vbox_fd))
174	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
175	"Unable to close the virtual machine device (file %d): %s\n",
176	pVBox->vbox_fd, strerror (errno));
177	pVBox->vbox_fd = -1;
178	#endif
179	}
180
181	/**
182	* Macro to disable VBVA extensions and return, for use when an
183	* unexplained error occurs.
184	*/
185	#define DISABLE_VBVA_AND_RETURN(pScrn, ...) \
186	do \
187	{ \
188	xf86DrvMsg(pScrn->scrnIndex, X_ERROR, __VA_ARGS__); \
189	vboxDisableVbva(pScrn); \
190	pVBox->useVbva = FALSE; \
191	return; \
192	} \
193	while (0)
194
195	/**
196	* Callback function called by the X server to tell us about dirty
197	* rectangles in the video buffer.
198	*
199	* @param pScreen pointer to the information structure for the current
200	* screen
201	* @param iRects Number of dirty rectangles to update
202	* @param aRects Array of structures containing the coordinates of the
203	* rectangles
204	*/
205	static void
206	vboxHandleDirtyRect(ScrnInfoPtr pScrn, int iRects, BoxPtr aRects)
207	{
208	VBVACMDHDR cmdHdr;
209	VBOXPtr pVBox;
210	VBVARECORD *pRecord;
211	VBVAMEMORY *pMem;
212	CARD32 indexRecordNext;
213	CARD32 off32Data;
214	CARD32 off32Free;
215	INT32 i32Diff;
216	CARD32 cbHwBufferAvail;
217	int scrnIndex;
218	int i;
219
220	pVBox = pScrn->driverPrivate;
221	if (pVBox->useVbva == FALSE)
222	return;
223	pMem = pVBox->pVbvaMemory;
224	/* Just return quietly if VBVA is not currently active. */
225	if ((pMem->fu32ModeFlags & VBVA_F_MODE_ENABLED) == 0)
226	return;
227	scrnIndex = pScrn->scrnIndex;
228
229	for (i = 0; i < iRects; i++)
230	{
231	cmdHdr.x = (int16_t)aRects[i].x1;
232	cmdHdr.y = (int16_t)aRects[i].y1;
233	cmdHdr.w = (uint16_t)(aRects[i].x2 - aRects[i].x1);
234	cmdHdr.h = (uint16_t)(aRects[i].y2 - aRects[i].y1);
235
236	/* Get the active record and move the pointer along */
237	indexRecordNext = (pMem->indexRecordFree + 1)
238	% VBVA_MAX_RECORDS;
239	if (indexRecordNext == pMem->indexRecordFirst)
240	{
241	/* All slots in the records queue are used. */
242	if (vbox_vmmcall(pScrn, pVBox,
243	(VMMDevRequestHeader *) pVBox->reqf) != TRUE)
244	DISABLE_VBVA_AND_RETURN(pScrn,
245	"Unable to clear the VirtualBox graphics acceleration queue "
246	"- the request to the virtual machine failed. Switching to "
247	"unaccelerated mode.\n");
248	}
249	if (indexRecordNext == pMem->indexRecordFirst)
250	DISABLE_VBVA_AND_RETURN(pScrn,
251	"Failed to clear the VirtualBox graphics acceleration queue. "
252	"Switching to unaccelerated mode.\n");
253	pRecord = &pMem->aRecords[pMem->indexRecordFree];
254	/* Mark the record as being updated. */
255	pRecord->cbRecord = VBVA_F_RECORD_PARTIAL;
256	pMem->indexRecordFree = indexRecordNext;
257	/* Compute how many bytes we have in the ring buffer. */
258	off32Free = pMem->off32Free;
259	off32Data = pMem->off32Data;
260	/* Free is writing position. Data is reading position.
261	* Data == Free means buffer is free.
262	* There must be always gap between free and data when data
263	* are in the buffer.
264	* Guest only changes free, host only changes data.
265	*/
266	i32Diff = off32Data - off32Free;
267	cbHwBufferAvail = i32Diff > 0? i32Diff: VBVA_RING_BUFFER_SIZE
268	+ i32Diff;
269	if (cbHwBufferAvail <= VBVA_RING_BUFFER_THRESHOLD)
270	{
271	if (vbox_vmmcall(pScrn, pVBox,
272	(VMMDevRequestHeader *) pVBox->reqf) != TRUE)
273	DISABLE_VBVA_AND_RETURN(pScrn,
274	"Unable to clear the VirtualBox graphics acceleration queue "
275	"- the request to the virtual machine failed. Switching to "
276	"unaccelerated mode.\n");
277	/* Calculate the free space again. */
278	off32Free = pMem->off32Free;
279	off32Data = pMem->off32Data;
280	i32Diff = off32Data - off32Free;
281	cbHwBufferAvail = i32Diff > 0? i32Diff:
282	VBVA_RING_BUFFER_SIZE + i32Diff;
283	if (cbHwBufferAvail <= VBVA_RING_BUFFER_THRESHOLD)
284	DISABLE_VBVA_AND_RETURN(pScrn,
285	"No space left in the VirtualBox graphics acceleration command buffer, "
286	"despite clearing the queue. Switching to unaccelerated mode.\n");
287	}
288	/* Now copy the data into the buffer */
289	if (off32Free + sizeof(cmdHdr) < VBVA_RING_BUFFER_SIZE)
290	{
291	memcpy(&pMem->au8RingBuffer[off32Free], &cmdHdr,
292	sizeof(cmdHdr));
293	pMem->off32Free = pMem->off32Free + sizeof(cmdHdr);
294	}
295	else
296	{
297	CARD32 u32First = VBVA_RING_BUFFER_SIZE - off32Free;
298	/* The following is impressively ugly! */
299	CARD8 pu8Second = (CARD8 )&cmdHdr + u32First;
300	CARD32 u32Second = sizeof(cmdHdr) - u32First;
301	memcpy(&pMem->au8RingBuffer[off32Free], &cmdHdr, u32First);
302	if (u32Second)
303	memcpy(&pMem->au8RingBuffer[0], (void *)pu8Second, u32Second);
304	pMem->off32Free = u32Second;
305	}
306	pRecord->cbRecord += sizeof(cmdHdr);
307	/* Mark the record completed. */
308	pRecord->cbRecord &= ~VBVA_F_RECORD_PARTIAL;
309	}
310	}
311
312
313	/**
314	* Initialise VirtualBox's accelerated video extensions.
315	* Note that we assume that the PCI memory is 32bit mapped,
316	* as X doesn't seem to support mapping 64bit memory.
317	*
318	* @returns True on success, false on failure
319	*/
320	static Bool
321	vboxInitVbva(int scrnIndex, ScreenPtr pScreen, VBOXPtr pVBox)
322	{
323	PCITAG pciTag;
324	ADDRESS pciAddress;
325	int rc;
326
327	/* Locate the device. It should already have been enabled by
328	the kernel driver. */
329	pciTag = pciFindFirst((unsigned) VMMDEV_DEVICEID << 16 \| VMMDEV_VENDORID,
330	(CARD32) ~0);
331	if (pciTag == PCI_NOT_FOUND)
332	{
333	xf86DrvMsg(scrnIndex, X_ERROR,
334	"Could not find the VirtualBox base device on the PCI bus.\n");
335	return FALSE;
336	}
337	/* Read the address and size of the second I/O region. */
338	pciAddress = pciReadLong(pciTag, PCI_MAP_REG_START + 4);
339	if (pciAddress == 0 \|\| pciAddress == (CARD32) ~0)
340	RETERROR(scrnIndex, FALSE,
341	"The VirtualBox base device contains an invalid memory address.\n");
342	if (PCI_MAP_IS64BITMEM(pciAddress))
343	RETERROR(scrnIndex, FALSE,
344	"The VirtualBox base device has a 64bit mapping address. "
345	"This is currently not supported.\n");
346	/* Map it. We hardcode the size as X does not export the
347	function needed to determine it. */
348	pVBox->pVMMDevMemory = xf86MapPciMem(scrnIndex, 0, pciTag, pciAddress,
349	sizeof(VMMDevMemory));
350	if (pVBox->pVMMDevMemory == NULL)
351	{
352	xf86DrvMsg(scrnIndex, X_ERROR,
353	"Failed to map VirtualBox video extension memory.\n");
354	return FALSE;
355	}
356	pVBox->pVbvaMemory = &pVBox->pVMMDevMemory->vbvaMemory;
357	/* Initialise requests */
358	pVBox->reqf = xcalloc(1, vmmdevGetRequestSize(VMMDevReq_VideoAccelFlush));
359	if (!pVBox->reqf)
360	{
361	xf86DrvMsg(scrnIndex, X_ERROR,
362	"Could not allocate memory for VBVA flush request.\n");
363	return FALSE;
364	}
365	rc = vmmdevInitRequest ((VMMDevRequestHeader *) pVBox->reqf,
366	VMMDevReq_VideoAccelFlush);
367	if (VBOX_FAILURE (rc))
368	{
369	xf86DrvMsg(scrnIndex, X_ERROR,
370	"Could not initialise VBVA flush request: return value %d\n", rc);
371	xfree(pVBox->reqf);
372	return FALSE;
373	}
374	pVBox->reqe = xcalloc(1, vmmdevGetRequestSize(VMMDevReq_VideoAccelEnable));
375	if (!pVBox->reqe)
376	{
377	xf86DrvMsg(scrnIndex, X_ERROR,
378	"Could not allocate memory for VBVA enable request.\n");
379	xfree(pVBox->reqf);
380	return FALSE;
381	}
382	rc = vmmdevInitRequest ((VMMDevRequestHeader *) pVBox->reqe,
383	VMMDevReq_VideoAccelEnable);
384	if (VBOX_FAILURE (rc))
385	{
386	xf86DrvMsg(scrnIndex, X_ERROR,
387	"Could not initialise VBVA enable request: return value = %d\n",
388	rc);
389	xfree(pVBox->reqf);
390	xfree(pVBox->reqe);
391	return FALSE;
392	}
393	/* Set up the dirty rectangle handler. Since this seems to be a
394	delicate operation, and removing it doubly so, this will
395	remain in place whether it is needed or not, and will simply
396	return if VBVA is not active. I assume that it will be active
397	most of the time. */
398	if (ShadowFBInit2(pScreen, NULL, vboxHandleDirtyRect) != TRUE)
399	{
400	xf86DrvMsg(scrnIndex, X_ERROR,
401	"Unable to install dirty rectangle handler for VirtualBox graphics acceleration.\n");
402	xfree(pVBox->reqf);
403	xfree(pVBox->reqe);
404	return FALSE;
405	}
406	return TRUE;
407	}
408
409	Bool
410	vbox_open (ScrnInfoPtr pScrn, ScreenPtr pScreen, VBOXPtr pVBox)
411	{
412	int fd, vrc;
413	void *p = NULL;
414	size_t size;
415	int scrnIndex = pScrn->scrnIndex;
416	Bool rc = TRUE;
417
418	TRACE_ENTRY ();
419
420	pVBox->useVbva = FALSE;
421
422	#ifdef RT_OS_SOLARIS
423	NOREF(fd);
424	if (pVBox->reqp)
425	{
426	/* still open, just re-enable VBVA after CloseScreen was called */
427	pVBox->useVbva = vboxInitVbva(scrnIndex, pScreen, pVBox);
428	return TRUE;
429	}
430
431	vrc = VbglR3Init();
432	if (RT_FAILURE(vrc))
433	{
434	xf86DrvMsg(scrnIndex, X_ERROR, "VbglR3Init failed vrc=%d.\n", vrc);
435	rc = FALSE;
436	}
437	#else
438	if (pVBox->vbox_fd != -1 && pVBox->reqp)
439	{
440	/* still open, just re-enable VBVA after CloseScreen was called */
441	pVBox->useVbva = vboxInitVbva(scrnIndex, pScreen, pVBox);
442	return TRUE;
443	}
444
445	fd = open (VBOXGUEST_DEVICE_NAME, O_RDWR, 0);
446	if (fd < 0)
447	{
448	xf86DrvMsg(scrnIndex, X_ERROR,
449	"Error opening kernel module: %s\n",
450	strerror (errno));
451	rc = FALSE;
452	}
453	#endif
454
455	if (rc) {
456	size = vmmdevGetRequestSize (VMMDevReq_SetPointerShape);
457
458	p = xcalloc (1, size);
459	if (NULL == p) {
460	xf86DrvMsg(scrnIndex, X_ERROR,
461	"Could not allocate %lu bytes for VMM request\n",
462	(unsigned long) size);
463	rc = FALSE;
464	}
465	}
466	if (rc) {
467	vrc = vmmdevInitRequest (p, VMMDevReq_SetPointerShape);
468	if (VBOX_FAILURE (vrc))
469	{
470	xf86DrvMsg(scrnIndex, X_ERROR,
471	"Could not init VMM request: vrc = %d\n", vrc);
472	rc = FALSE;
473	}
474	}
475	if (rc) {
476	#ifndef RT_OS_SOLARIS
477	pVBox->vbox_fd = fd;
478	#endif
479	pVBox->reqp = p;
480	pVBox->pCurs = NULL;
481	pVBox->useHwCursor = vbox_host_can_hwcursor(pScrn, pVBox);
482	pVBox->pointerHeaderSize = size;
483	pVBox->pointerOffscreen = FALSE;
484	pVBox->useVbva = vboxInitVbva(scrnIndex, pScreen, pVBox);
485	} else {
486	if (NULL != p) {
487	xfree (p);
488	}
489	#ifdef RT_OS_SOLARIS
490	VbglR3Term();
491	#else
492	if (close (fd)) {
493	xf86DrvMsg(scrnIndex, X_ERROR,
494	"Error closing kernel module file descriptor(%d): %s\n",
495	fd, strerror (errno));
496	}
497	#endif
498	}
499	return rc;
500	}
501
502	static void vbox_vmm_hide_cursor (ScrnInfoPtr pScrn, VBOXPtr pVBox)
503	{
504	pVBox->reqp->fFlags = 0;
505	if (vbox_vmmcall (pScrn, pVBox, &pVBox->reqp->header) != TRUE)
506	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
507	"Could not hide the virtual mouse pointer.\n");
508	}
509
510	static void vbox_vmm_show_cursor (ScrnInfoPtr pScrn, VBOXPtr pVBox)
511	{
512	pVBox->reqp->fFlags = VBOX_MOUSE_POINTER_VISIBLE;
513	if (vbox_vmmcall (pScrn, pVBox, &pVBox->reqp->header) != TRUE)
514	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
515	"Could not unhide the virtual mouse pointer.\n");
516	}
517
518	static void vbox_vmm_load_cursor_image (ScrnInfoPtr pScrn, VBOXPtr pVBox,
519	unsigned char *image)
520	{
521	VMMDevReqMousePointer *reqp;
522	reqp = (VMMDevReqMousePointer *) image;
523
524	dolog ("w=%d h=%d size=%d\n",
525	reqp->width,
526	reqp->height,
527	reqp->header.size);
528
529	#ifdef DEBUG_X
530	vbox_show_shape (reqp->width, reqp->height, 0, image);
531	#endif
532
533	if (vbox_vmmcall (pScrn, pVBox, &reqp->header) != TRUE)
534	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
535	"Unable to set the virtual mouse pointer image.\n");
536	}
537
538	static void vbox_set_cursor_colors (ScrnInfoPtr pScrn, int bg, int fg)
539	{
540	TRACE_ENTRY ();
541
542	(void) pScrn;
543	(void) bg;
544	(void) fg;
545	/* ErrorF ("vbox_set_cursor_colors NOT IMPLEMENTED\n"); */
546	}
547
548	static void
549	vbox_set_cursor_position (ScrnInfoPtr pScrn, int x, int y)
550	{
551	/* VBOXPtr pVBox = pScrn->driverPrivate; */
552
553	/* TRACE_ENTRY (); */
554
555	/* don't disable the mouse cursor if we go out of our visible area
556	* since the mouse cursor is drawn by the host anyway */
557	#if 0
558	if (((x < 0) \|\| (x > pScrn->pScreen->width))
559	\|\| ((y < 0) \|\| (y > pScrn->pScreen->height))) {
560	if (!pVBox->pointerOffscreen) {
561	pVBox->pointerOffscreen = TRUE;
562	vbox_vmm_hide_cursor (pScrn, pVBox);
563	}
564	}
565	else {
566	if (pVBox->pointerOffscreen) {
567	pVBox->pointerOffscreen = FALSE;
568	vbox_vmm_show_cursor (pScrn, pVBox);
569	}
570	}
571	#endif
572	}
573
574	static void vbox_hide_cursor (ScrnInfoPtr pScrn)
575	{
576	VBOXPtr pVBox = pScrn->driverPrivate;
577
578	TRACE_ENTRY ();
579
580	vbox_vmm_hide_cursor (pScrn, pVBox);
581	}
582
583	static void vbox_show_cursor (ScrnInfoPtr pScrn)
584	{
585	VBOXPtr pVBox = pScrn->driverPrivate;
586
587	TRACE_ENTRY ();
588
589	vbox_vmm_show_cursor (pScrn, pVBox);
590	}
591
592	static void vbox_load_cursor_image (ScrnInfoPtr pScrn, unsigned char *image)
593	{
594	VBOXPtr pVBox = pScrn->driverPrivate;
595
596	TRACE_ENTRY ();
597
598	vbox_vmm_load_cursor_image (pScrn, pVBox, image);
599	}
600
601	static Bool
602	vbox_use_hw_cursor (ScreenPtr pScreen, CursorPtr pCurs)
603	{
604	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
605	VBOXPtr pVBox = pScrn->driverPrivate;
606	return pVBox->useHwCursor;
607	}
608
609	static unsigned char color_to_byte (unsigned c)
610	{
611	return (c >> 8) & 0xff;
612	}
613
614	static unsigned char *
615	vbox_realize_cursor(xf86CursorInfoPtr infoPtr, CursorPtr pCurs)
616	{
617	VBOXPtr pVBox;
618	CursorBitsPtr bitsp;
619	unsigned short w, h, x, y;
620	unsigned char c, p, pm, ps, *m;
621	size_t size, size_rgba, size_mask, src_pitch, dst_pitch;
622	CARD32 fc, bc, *cp;
623	int rc, scrnIndex = infoPtr->pScrn->scrnIndex;
624	VMMDevReqMousePointer *reqp;
625
626	pVBox = infoPtr->pScrn->driverPrivate;
627	bitsp = pCurs->bits;
628	w = bitsp->width;
629	h = bitsp->height;
630
631	if (!w \|\| !h \|\| w > VBOX_MAX_CURSOR_WIDTH \|\| h > VBOX_MAX_CURSOR_HEIGHT)
632	RETERROR(scrnIndex, NULL,
633	"Error invalid cursor dimensions %dx%d\n", w, h);
634
635	if ((bitsp->xhot > w) \|\| (bitsp->yhot > h))
636	RETERROR(scrnIndex, NULL,
637	"Error invalid cursor hotspot location %dx%d (max %dx%d)\n",
638	bitsp->xhot, bitsp->yhot, w, h);
639
640	src_pitch = PixmapBytePad (bitsp->width, 1);
641	dst_pitch = (w + 7) / 8;
642	size_mask = ((dst_pitch * h) + 3) & (size_t) ~3;
643	size_rgba = w * h * 4;
644	size = size_mask + size_rgba + pVBox->pointerHeaderSize;
645
646	p = c = xcalloc (1, size);
647	if (!c)
648	RETERROR(scrnIndex, NULL,
649	"Error failed to alloc %lu bytes for cursor\n",
650	(unsigned long) size);
651
652	rc = vmmdevInitRequest ((VMMDevRequestHeader *) p,
653	VMMDevReq_SetPointerShape);
654	if (VBOX_FAILURE (rc)) {
655	xfree(p);
656	RETERROR(scrnIndex, NULL,
657	"Could not init VMM request: rc = %d\n", rc);
658	}
659
660	m = p + offsetof (VMMDevReqMousePointer, pointerData);
661	cp = (CARD32 *) (m + size_mask);
662
663	dolog ("w=%d h=%d sm=%d sr=%d p=%d\n",
664	w, h, (int) size_mask, (int) size_rgba, (int) dst_pitch);
665	dolog ("m=%p c=%p cp=%p\n", m, c, (void *) cp);
666
667	fc = color_to_byte (pCurs->foreBlue)
668	\| (color_to_byte (pCurs->foreGreen) << 8)
669	\| (color_to_byte (pCurs->foreRed) << 16);
670
671	bc = color_to_byte (pCurs->backBlue)
672	\| (color_to_byte (pCurs->backGreen) << 8)
673	\| (color_to_byte (pCurs->backRed) << 16);
674
675	/*
676	* Convert the Xorg source/mask bits to the and/xor bits VBox needs.
677	* Xorg:
678	* The mask is a bitmap indicating which parts of the cursor are
679	* transparent and which parts are drawn. The source is a bitmap
680	* indicating which parts of the non-transparent portion of the
681	* the cursor should be painted in the foreground color and which
682	* should be painted in the background color. By default, set bits
683	* indicate the opaque part of the mask bitmap and clear bits
684	* indicate the transparent part.
685	* VBox:
686	* The color data is the XOR mask. The AND mask bits determine
687	* which pixels of the color data (XOR mask) will replace (overwrite)
688	* the screen pixels (AND mask bit = 0) and which ones will be XORed
689	* with existing screen pixels (AND mask bit = 1).
690	* For example when you have the AND mask all 0, then you see the
691	* correct mouse pointer image surrounded by black square.
692	*/
693	for (pm = bitsp->mask, ps = bitsp->source, y = 0;
694	y < h;
695	++y, pm += src_pitch, ps += src_pitch, m += dst_pitch)
696	{
697	for (x = 0; x < w; ++x)
698	{
699	if (pm[x / 8] & (1 << (x % 8)))
700	{
701	/* opaque, leave AND mask bit at 0 */
702	if (ps[x / 8] & (1 << (x % 8)))
703	{
704	*cp++ = fc;
705	PUT_PIXEL ('X');
706	}
707	else
708	{
709	*cp++ = bc;
710	PUT_PIXEL ('*');
711	}
712	}
713	else
714	{
715	/* transparent, set AND mask bit */
716	m[x / 8] \|= 1 << (7 - (x % 8));
717	/* don't change the screen pixel */
718	*cp++ = 0;
719	PUT_PIXEL (' ');
720	}
721	}
722	PUT_PIXEL ('\n');
723	}
724
725	reqp = (VMMDevReqMousePointer *) p;
726	reqp->width = w;
727	reqp->height = h;
728	reqp->xHot = bitsp->xhot;
729	reqp->yHot = bitsp->yhot;
730	reqp->fFlags = VBOX_MOUSE_POINTER_SHAPE;
731	reqp->header.size = size;
732
733	#ifdef DEBUG_X
734	ErrorF ("shape = %p\n", p);
735	vbox_show_shape (w, h, bc, c);
736	#endif
737
738	return p;
739	}
740
741	#ifdef ARGB_CURSOR
742	static Bool vbox_use_hw_cursor_argb (ScreenPtr pScreen, CursorPtr pCurs)
743	{
744	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
745	return pCurs->bits->height <= VBOX_MAX_CURSOR_HEIGHT
746	&& pCurs->bits->width <= VBOX_MAX_CURSOR_WIDTH
747	&& pScrn->bitsPerPixel > 8;
748	}
749
750	static void vbox_load_cursor_argb (ScrnInfoPtr pScrn, CursorPtr pCurs)
751	{
752	VBOXPtr pVBox;
753	VMMDevReqMousePointer *reqp;
754	CursorBitsPtr bitsp;
755	unsigned short w, h;
756	unsigned short cx, cy;
757	unsigned char *pm;
758	CARD32 *pc;
759	size_t size, mask_size;
760	CARD8 *p;
761	int scrnIndex;
762
763	pVBox = pScrn->driverPrivate;
764	bitsp = pCurs->bits;
765	w = bitsp->width;
766	h = bitsp->height;
767	scrnIndex = pScrn->scrnIndex;
768
769	/* Mask must be generated for alpha cursors, that is required by VBox. */
770	/* @note: (michael) the next struct must be 32bit aligned. */
771	mask_size = ((w + 7) / 8 * h + 3) & ~3;
772
773	if (!w \|\| !h \|\| w > VBOX_MAX_CURSOR_WIDTH \|\| h > VBOX_MAX_CURSOR_HEIGHT)
774	RETERROR(scrnIndex, ,
775	"Error invalid cursor dimensions %dx%d\n", w, h);
776
777	if ((bitsp->xhot > w) \|\| (bitsp->yhot > h))
778	RETERROR(scrnIndex, ,
779	"Error invalid cursor hotspot location %dx%d (max %dx%d)\n",
780	bitsp->xhot, bitsp->yhot, w, h);
781
782	size = w * h * 4 + pVBox->pointerHeaderSize + mask_size;
783	p = xcalloc (1, size);
784	if (!p)
785	RETERROR(scrnIndex, ,
786	"Error failed to alloc %lu bytes for cursor\n",
787	(unsigned long) size);
788
789	reqp = (VMMDevReqMousePointer *) p;
790	reqp = pVBox->reqp;
791	reqp->width = w;
792	reqp->height = h;
793	reqp->xHot = bitsp->xhot;
794	reqp->yHot = bitsp->yhot;
795	reqp->fFlags = VBOX_MOUSE_POINTER_SHAPE \| VBOX_MOUSE_POINTER_ALPHA;
796	reqp->header.size = size;
797
798	memcpy (p + offsetof (VMMDevReqMousePointer, pointerData) + mask_size,
799	bitsp->argb, w * h * 4);
800
801	/** @ */
802	/* Emulate the AND mask. */
803	pm = p + offsetof (VMMDevReqMousePointer, pointerData);
804	pc = bitsp->argb;
805
806	/* Init AND mask to 1 */
807	memset (pm, 0xFF, mask_size);
808
809	/**
810	* The additions driver must provide the AND mask for alpha cursors. The host frontend
811	* which can handle alpha channel, will ignore the AND mask and draw an alpha cursor.
812	* But if the host does not support ARGB, then it simply uses the AND mask and the color
813	* data to draw a normal color cursor.
814	*/
815	for (cy = 0; cy < h; cy++)
816	{
817	unsigned char bitmask = 0x80;
818
819	for (cx = 0; cx < w; cx++, bitmask >>= 1)
820	{
821	if (bitmask == 0)
822	bitmask = 0x80;
823
824	if (pc[cx] >= 0xF0000000)
825	pm[cx / 8] &= ~bitmask;
826	}
827
828	/* Point to next source and dest scans */
829	pc += w;
830	pm += (w + 7) / 8;
831	}
832
833	if (vbox_vmmcall (pScrn, pVBox, &reqp->header) != TRUE)
834	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
835	"Request to virtual machine failed "
836	"- unable to set the virtual mouse pointer ARGB cursor image.\n");
837
838	xfree (p);
839	}
840	#endif
841
842	Bool vbox_cursor_init (ScreenPtr pScreen)
843	{
844	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
845	VBOXPtr pVBox = pScrn->driverPrivate;
846	xf86CursorInfoPtr pCurs;
847	Bool rc;
848
849	if (pVBox->useHwCursor)
850	{
851	xf86DrvMsg(pScrn->scrnIndex, X_INFO,
852	"The host system is drawing the mouse cursor.\n");
853	}
854	else
855	{
856	xf86DrvMsg(pScrn->scrnIndex, X_INFO,
857	"The guest system is drawing the mouse cursor.\n");
858	return TRUE;
859	}
860
861	pVBox->pCurs = pCurs = xf86CreateCursorInfoRec ();
862	if (!pCurs)
863	RETERROR(pScrn->scrnIndex, FALSE,
864	"Failed to create X Window cursor information structures for virtual mouse.\n");
865
866	pCurs->MaxWidth = VBOX_MAX_CURSOR_WIDTH;
867	pCurs->MaxHeight = VBOX_MAX_CURSOR_HEIGHT;
868	pCurs->Flags = HARDWARE_CURSOR_TRUECOLOR_AT_8BPP
869	\| HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_1
870	\| HARDWARE_CURSOR_BIT_ORDER_MSBFIRST;
871
872	pCurs->SetCursorColors = vbox_set_cursor_colors;
873	pCurs->SetCursorPosition = vbox_set_cursor_position;
874	pCurs->LoadCursorImage = vbox_load_cursor_image;
875	pCurs->HideCursor = vbox_hide_cursor;
876	pCurs->ShowCursor = vbox_show_cursor;
877	pCurs->UseHWCursor = vbox_use_hw_cursor;
878	pCurs->RealizeCursor = vbox_realize_cursor;
879
880	#ifdef ARGB_CURSOR
881	pCurs->UseHWCursorARGB = vbox_use_hw_cursor_argb;
882	pCurs->LoadCursorARGB = vbox_load_cursor_argb;
883	#endif
884
885	rc = xf86InitCursor (pScreen, pCurs);
886	if (rc == TRUE)
887	return TRUE;
888	RETERROR(pScrn->scrnIndex, FALSE, "Failed to enable mouse pointer integration.\n");
889	}
890
891	/**
892	* Inform VBox that we will supply it with dirty rectangle information
893	* and install the dirty rectangle handler.
894	*
895	* @returns TRUE for success, FALSE for failure
896	* @param pScreen Pointer to a structure describing the X screen in use
897	*/
898	Bool
899	vboxEnableVbva(ScrnInfoPtr pScrn)
900	{
901	int scrnIndex = pScrn->scrnIndex;
902	VBOXPtr pVBox = pScrn->driverPrivate;
903
904	if (pVBox->useVbva != TRUE)
905	return FALSE;
906	pVBox->reqe->u32Enable = 1;
907	pVBox->reqe->cbRingBuffer = VBVA_RING_BUFFER_SIZE;
908	pVBox->reqe->fu32Status = 0;
909	if (vbox_vmmcall(pScrn, pVBox, (VMMDevRequestHeader *) pVBox->reqe)
910	!= TRUE)
911	{
912	/* Request not accepted - disable for old hosts. */
913	xf86DrvMsg(scrnIndex, X_ERROR,
914	"Unable to activate VirtualBox graphics acceleration "
915	"- the request to the virtual machine failed. "
916	"You may be running an old version of VirtualBox.\n");
917	pVBox->useVbva = FALSE;
918	pVBox->reqe->u32Enable = 0;
919	pVBox->reqe->cbRingBuffer = VBVA_RING_BUFFER_SIZE;
920	pVBox->reqe->fu32Status = 0;
921	vbox_vmmcall(pScrn, pVBox, (VMMDevRequestHeader *) pVBox->reqe);
922	return FALSE;
923	}
924	return TRUE;
925	}
926
927
928	/**
929	* Inform VBox that we will stop supplying it with dirty rectangle
930	* information. This function is intended to be called when an X
931	* virtual terminal is disabled, or the X server is terminated.
932	*
933	* @returns TRUE for success, FALSE for failure
934	* @param pScreen Pointer to a structure describing the X screen in use
935	*/
936	Bool
937	vboxDisableVbva(ScrnInfoPtr pScrn)
938	{
939	int scrnIndex = pScrn->scrnIndex;
940	VBOXPtr pVBox = pScrn->driverPrivate;
941
942	if (pVBox->useVbva != TRUE) /* Ths function should not have been called */
943	return FALSE;
944	pVBox->reqe->u32Enable = 0;
945	pVBox->reqe->cbRingBuffer = VBVA_RING_BUFFER_SIZE;
946	pVBox->reqe->fu32Status = 0;
947	if (vbox_vmmcall(pScrn, pVBox, (VMMDevRequestHeader *) pVBox->reqe)
948	!= TRUE)
949	xf86DrvMsg(scrnIndex, X_ERROR,
950	"Unable to disable VirtualBox graphics acceleration "
951	"- the request to the virtual machine failed.\n");
952	else
953	memset(pVBox->pVbvaMemory, 0, sizeof(VBVAMEMORY));
954	return TRUE;
955	}
956
957
958	/**
959	* Query the last display change request.
960	*
961	* @returns iprt status value
962	* @retval xres horizontal pixel resolution (0 = do not change)
963	* @retval yres vertical pixel resolution (0 = do not change)
964	* @retval bpp bits per pixel (0 = do not change)
965	* @param eventAck Flag that the request is an acknowlegement for the
966	* VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST.
967	* Values:
968	* 0 - just querying,
969	* VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST - event acknowledged.
970	* @param display 0 for primary display, 1 for the first secondary, etc.
971	*/
972	Bool
973	vboxGetDisplayChangeRequest(ScrnInfoPtr pScrn, uint32_t px, uint32_t py,
974	uint32_t *pbpp, uint32_t eventAck, uint32_t display)
975	{
976	int rc, scrnIndex = pScrn->scrnIndex;
977	VBOXPtr pVBox = pScrn->driverPrivate;
978
979	VMMDevDisplayChangeRequest2 Req;
980	vmmdevInitRequest(&Req.header, VMMDevReq_GetDisplayChangeRequest2);
981	Req.xres = 0;
982	Req.yres = 0;
983	Req.bpp = 0;
984	Req.eventAck = eventAck;
985	Req.display = display;
986	rc = vbox_vmmcall(pScrn, pVBox, &Req.header);
987	if (RT_SUCCESS(rc))
988	{
989	*px = Req.xres;
990	*py = Req.yres;
991	*pbpp = Req.bpp;
992	return TRUE;
993	}
994	xf86DrvMsg(scrnIndex, X_ERROR,
995	"Failed to request the last resolution requested from the guest, rc=%d.\n",
996	rc);
997	return FALSE;
998	}

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source: vbox/trunk/src/VBox/Additions/x11/xgraphics/vboxutils.c@ 6587

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