VirtualBox

source: vbox/trunk/src/VBox/Additions/x11/vboxvideo/vbva.c@ 67954

Last change on this file since 67954 was 65122, checked in by vboxsync, 8 years ago

Additions: doxygen fixes

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 8.3 KB
Line 
1/* $Id: vbva.c 65122 2017-01-04 17:11:20Z vboxsync $ */
2/** @file
3 * VirtualBox X11 Additions graphics driver 2D acceleration functions
4 */
5
6/*
7 * Copyright (C) 2006-2016 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18#include <VBox/VMMDev.h>
19#include <VBox/VBoxGuestLib.h>
20
21#include <iprt/string.h>
22#include "compiler.h"
23
24#include "vboxvideo.h"
25
26#ifdef XORG_7X
27# include <stdlib.h>
28#endif
29
30/**************************************************************************
31* Main functions *
32**************************************************************************/
33
34/**
35 * Callback function called by the X server to tell us about dirty
36 * rectangles in the video buffer.
37 *
38 * @param pScrn pointer to the information structure for the current
39 * screen
40 * @param iRects Number of dirty rectangles to update
41 * @param aRects Array of structures containing the coordinates of the
42 * rectangles
43 */
44void vbvxHandleDirtyRect(ScrnInfoPtr pScrn, int iRects, BoxPtr aRects)
45{
46 VBVACMDHDR cmdHdr;
47 VBOXPtr pVBox;
48 int i;
49 unsigned j;
50
51 pVBox = pScrn->driverPrivate;
52 if (!pScrn->vtSema)
53 return;
54
55 for (j = 0; j < pVBox->cScreens; ++j)
56 {
57 /* Just continue quietly if VBVA is not currently active. */
58 struct VBVABUFFER *pVBVA = pVBox->pScreens[j].aVbvaCtx.pVBVA;
59 if ( !pVBVA
60 || !(pVBVA->hostFlags.u32HostEvents & VBVA_F_MODE_ENABLED))
61 continue;
62 for (i = 0; i < iRects; ++i)
63 {
64 if ( aRects[i].x1 > pVBox->pScreens[j].aScreenLocation.x
65 + pVBox->pScreens[j].aScreenLocation.cx
66 || aRects[i].y1 > pVBox->pScreens[j].aScreenLocation.y
67 + pVBox->pScreens[j].aScreenLocation.cy
68 || aRects[i].x2 < pVBox->pScreens[j].aScreenLocation.x
69 || aRects[i].y2 < pVBox->pScreens[j].aScreenLocation.y)
70 continue;
71 cmdHdr.x = (int16_t)aRects[i].x1 - pVBox->pScreens[0].aScreenLocation.x;
72 cmdHdr.y = (int16_t)aRects[i].y1 - pVBox->pScreens[0].aScreenLocation.y;
73 cmdHdr.w = (uint16_t)(aRects[i].x2 - aRects[i].x1);
74 cmdHdr.h = (uint16_t)(aRects[i].y2 - aRects[i].y1);
75
76#if 0
77 TRACE_LOG("display=%u, x=%d, y=%d, w=%d, h=%d\n",
78 j, cmdHdr.x, cmdHdr.y, cmdHdr.w, cmdHdr.h);
79#endif
80
81 if (VBoxVBVABufferBeginUpdate(&pVBox->pScreens[j].aVbvaCtx,
82 &pVBox->guestCtx))
83 {
84 VBoxVBVAWrite(&pVBox->pScreens[j].aVbvaCtx, &pVBox->guestCtx, &cmdHdr,
85 sizeof(cmdHdr));
86 VBoxVBVABufferEndUpdate(&pVBox->pScreens[j].aVbvaCtx);
87 }
88 }
89 }
90}
91
92static DECLCALLBACK(void *) hgsmiEnvAlloc(void *pvEnv, HGSMISIZE cb)
93{
94 NOREF(pvEnv);
95 return calloc(1, cb);
96}
97
98static DECLCALLBACK(void) hgsmiEnvFree(void *pvEnv, void *pv)
99{
100 NOREF(pvEnv);
101 free(pv);
102}
103
104static HGSMIENV g_hgsmiEnv =
105{
106 NULL,
107 hgsmiEnvAlloc,
108 hgsmiEnvFree
109};
110
111/**
112 * Calculate the location in video RAM of and initialise the heap for guest to
113 * host messages. In the VirtualBox 4.3 and earlier Guest Additions this
114 * function creates the heap structures directly in guest video RAM, so it
115 * needs to be called whenever video RAM is (re-)set-up.
116 */
117void vbvxSetUpHGSMIHeapInGuest(VBOXPtr pVBox, uint32_t cbVRAM)
118{
119 int rc;
120 uint32_t offVRAMBaseMapping, offGuestHeapMemory, cbGuestHeapMemory;
121 void *pvGuestHeapMemory;
122
123 VBoxHGSMIGetBaseMappingInfo(cbVRAM, &offVRAMBaseMapping, NULL, &offGuestHeapMemory, &cbGuestHeapMemory, NULL);
124 pvGuestHeapMemory = ((uint8_t *)pVBox->base) + offVRAMBaseMapping + offGuestHeapMemory;
125 rc = VBoxHGSMISetupGuestContext(&pVBox->guestCtx, pvGuestHeapMemory, cbGuestHeapMemory,
126 offVRAMBaseMapping + offGuestHeapMemory, &g_hgsmiEnv);
127 VBVXASSERT(RT_SUCCESS(rc), ("Failed to set up the guest-to-host message buffer heap, rc=%d\n", rc));
128 pVBox->cbView = offVRAMBaseMapping;
129}
130
131/** Callback to fill in the view structures */
132static DECLCALLBACK(int) vboxFillViewInfo(void *pvVBox, struct VBVAINFOVIEW *pViews, uint32_t cViews)
133{
134 VBOXPtr pVBox = (VBOXPtr)pvVBox;
135 unsigned i;
136 for (i = 0; i < cViews; ++i)
137 {
138 pViews[i].u32ViewIndex = i;
139 pViews[i].u32ViewOffset = 0;
140 pViews[i].u32ViewSize = pVBox->cbView;
141 pViews[i].u32MaxScreenSize = pVBox->cbFBMax;
142 }
143 return VINF_SUCCESS;
144}
145
146/**
147 * Initialise VirtualBox's accelerated video extensions.
148 *
149 * @returns TRUE on success, FALSE on failure
150 */
151static Bool vboxSetupVRAMVbva(VBOXPtr pVBox)
152{
153 int rc = VINF_SUCCESS;
154 unsigned i;
155
156 pVBox->cbFBMax = pVBox->cbView;
157 for (i = 0; i < pVBox->cScreens; ++i)
158 {
159 pVBox->cbFBMax -= VBVA_MIN_BUFFER_SIZE;
160 pVBox->pScreens[i].aoffVBVABuffer = pVBox->cbFBMax;
161 TRACE_LOG("VBVA buffer offset for screen %u: 0x%lx\n", i,
162 (unsigned long) pVBox->cbFBMax);
163 VBoxVBVASetupBufferContext(&pVBox->pScreens[i].aVbvaCtx,
164 pVBox->pScreens[i].aoffVBVABuffer,
165 VBVA_MIN_BUFFER_SIZE);
166 }
167 TRACE_LOG("Maximum framebuffer size: %lu (0x%lx)\n",
168 (unsigned long) pVBox->cbFBMax,
169 (unsigned long) pVBox->cbFBMax);
170 rc = VBoxHGSMISendViewInfo(&pVBox->guestCtx, pVBox->cScreens,
171 vboxFillViewInfo, (void *)pVBox);
172 VBVXASSERT(RT_SUCCESS(rc), ("Failed to send the view information to the host, rc=%d\n", rc));
173 return TRUE;
174}
175
176static bool haveHGSMIModeHintAndCursorReportingInterface(VBOXPtr pVBox)
177{
178 uint32_t fModeHintReporting, fCursorReporting;
179
180 return RT_SUCCESS(VBoxQueryConfHGSMI(&pVBox->guestCtx, VBOX_VBVA_CONF32_MODE_HINT_REPORTING, &fModeHintReporting))
181 && RT_SUCCESS(VBoxQueryConfHGSMI(&pVBox->guestCtx, VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING, &fCursorReporting))
182 && fModeHintReporting == VINF_SUCCESS
183 && fCursorReporting == VINF_SUCCESS;
184}
185
186static bool hostHasScreenBlankingFlag(VBOXPtr pVBox)
187{
188 uint32_t fScreenFlags;
189
190 return RT_SUCCESS(VBoxQueryConfHGSMI(&pVBox->guestCtx, VBOX_VBVA_CONF32_SCREEN_FLAGS, &fScreenFlags))
191 && fScreenFlags & VBVA_SCREEN_F_BLANK;
192}
193
194/**
195 * Inform VBox that we will supply it with dirty rectangle information
196 * and install the dirty rectangle handler.
197 *
198 * @returns TRUE for success, FALSE for failure
199 * @param pScrn Pointer to a structure describing the X screen in use
200 */
201Bool
202vboxEnableVbva(ScrnInfoPtr pScrn)
203{
204 bool rc = TRUE;
205 unsigned i;
206 VBOXPtr pVBox = pScrn->driverPrivate;
207
208 TRACE_ENTRY();
209 if (!vboxSetupVRAMVbva(pVBox))
210 return FALSE;
211 for (i = 0; i < pVBox->cScreens; ++i)
212 {
213 struct VBVABUFFER *pVBVA;
214
215 pVBVA = (struct VBVABUFFER *) ( ((uint8_t *)pVBox->base)
216 + pVBox->pScreens[i].aoffVBVABuffer);
217 if (!VBoxVBVAEnable(&pVBox->pScreens[i].aVbvaCtx, &pVBox->guestCtx,
218 pVBVA, i))
219 rc = FALSE;
220 }
221 VBVXASSERT(rc, ("Failed to enable screen update reporting for at least one virtual monitor.\n"));
222 pVBox->fHaveHGSMIModeHints = haveHGSMIModeHintAndCursorReportingInterface(pVBox);
223 pVBox->fHostHasScreenBlankingFlag = hostHasScreenBlankingFlag(pVBox);
224 return rc;
225}
226
227/**
228 * Inform VBox that we will stop supplying it with dirty rectangle
229 * information. This function is intended to be called when an X
230 * virtual terminal is disabled, or the X server is terminated.
231 *
232 * @returns TRUE for success, FALSE for failure
233 * @param pScrn Pointer to a structure describing the X screen in use
234 */
235void
236vboxDisableVbva(ScrnInfoPtr pScrn)
237{
238 unsigned i;
239 VBOXPtr pVBox = pScrn->driverPrivate;
240
241 TRACE_ENTRY();
242 for (i = 0; i < pVBox->cScreens; ++i)
243 VBoxVBVADisable(&pVBox->pScreens[i].aVbvaCtx, &pVBox->guestCtx, i);
244}
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