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Diffstat (limited to 'src/VBox/Additions/x11/vboxvideo/vbva.c')
-rw-r--r--src/VBox/Additions/x11/vboxvideo/vbva.c254
1 files changed, 254 insertions, 0 deletions
diff --git a/src/VBox/Additions/x11/vboxvideo/vbva.c b/src/VBox/Additions/x11/vboxvideo/vbva.c
new file mode 100644
index 00000000..e885d082
--- /dev/null
+++ b/src/VBox/Additions/x11/vboxvideo/vbva.c
@@ -0,0 +1,254 @@
+/* $Id: vbva.c $ */
+/** @file
+ * VirtualBox X11 Additions graphics driver 2D acceleration functions
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#if defined(IN_XF86_MODULE) && !defined(NO_ANSIC)
+# include "xf86_ansic.h"
+#endif
+#include "compiler.h"
+
+#include "vboxvideo.h"
+
+#ifdef XORG_7X
+# include <stdlib.h>
+# include <string.h>
+#endif
+
+/**************************************************************************
+* Main functions *
+**************************************************************************/
+
+/**
+ * Callback function called by the X server to tell us about dirty
+ * rectangles in the video buffer.
+ *
+ * @param pScrn pointer to the information structure for the current
+ * screen
+ * @param iRects Number of dirty rectangles to update
+ * @param aRects Array of structures containing the coordinates of the
+ * rectangles
+ */
+void vbvxHandleDirtyRect(ScrnInfoPtr pScrn, int iRects, BoxPtr aRects)
+{
+ VBVACMDHDR cmdHdr;
+ VBOXPtr pVBox;
+ int i;
+ unsigned j;
+
+ pVBox = pScrn->driverPrivate;
+ if (!pScrn->vtSema)
+ return;
+
+ for (j = 0; j < pVBox->cScreens; ++j)
+ {
+ /* Just continue quietly if VBVA is not currently active. */
+ struct VBVABUFFER *pVBVA = pVBox->pScreens[j].aVbvaCtx.pVBVA;
+ if ( !pVBVA
+ || !(pVBVA->hostFlags.u32HostEvents & VBVA_F_MODE_ENABLED))
+ continue;
+ for (i = 0; i < iRects; ++i)
+ {
+ if ( aRects[i].x1 > pVBox->pScreens[j].aScreenLocation.x
+ + pVBox->pScreens[j].aScreenLocation.cx
+ || aRects[i].y1 > pVBox->pScreens[j].aScreenLocation.y
+ + pVBox->pScreens[j].aScreenLocation.cy
+ || aRects[i].x2 < pVBox->pScreens[j].aScreenLocation.x
+ || aRects[i].y2 < pVBox->pScreens[j].aScreenLocation.y)
+ continue;
+ cmdHdr.x = (int16_t)aRects[i].x1 - pVBox->pScreens[0].aScreenLocation.x;
+ cmdHdr.y = (int16_t)aRects[i].y1 - pVBox->pScreens[0].aScreenLocation.y;
+ cmdHdr.w = (uint16_t)(aRects[i].x2 - aRects[i].x1);
+ cmdHdr.h = (uint16_t)(aRects[i].y2 - aRects[i].y1);
+
+#if 0
+ TRACE_LOG("display=%u, x=%d, y=%d, w=%d, h=%d\n",
+ j, cmdHdr.x, cmdHdr.y, cmdHdr.w, cmdHdr.h);
+#endif
+
+ if (VBoxVBVABufferBeginUpdate(&pVBox->pScreens[j].aVbvaCtx,
+ &pVBox->guestCtx))
+ {
+ VBoxVBVAWrite(&pVBox->pScreens[j].aVbvaCtx, &pVBox->guestCtx, &cmdHdr,
+ sizeof(cmdHdr));
+ VBoxVBVABufferEndUpdate(&pVBox->pScreens[j].aVbvaCtx);
+ }
+ }
+ }
+}
+
+static DECLCALLBACK(void *) hgsmiEnvAlloc(void *pvEnv, HGSMISIZE cb)
+{
+ RT_NOREF(pvEnv);
+ return calloc(1, cb);
+}
+
+static DECLCALLBACK(void) hgsmiEnvFree(void *pvEnv, void *pv)
+{
+ RT_NOREF(pvEnv);
+ free(pv);
+}
+
+static HGSMIENV g_hgsmiEnv =
+{
+ NULL,
+ hgsmiEnvAlloc,
+ hgsmiEnvFree
+};
+
+/**
+ * Calculate the location in video RAM of and initialise the heap for guest to
+ * host messages.
+ */
+void vbvxSetUpHGSMIHeapInGuest(VBOXPtr pVBox, uint32_t cbVRAM)
+{
+ int rc;
+ uint32_t offVRAMBaseMapping, offGuestHeapMemory, cbGuestHeapMemory;
+ void *pvGuestHeapMemory;
+
+ VBoxHGSMIGetBaseMappingInfo(cbVRAM, &offVRAMBaseMapping, NULL, &offGuestHeapMemory, &cbGuestHeapMemory, NULL);
+ pvGuestHeapMemory = ((uint8_t *)pVBox->base) + offVRAMBaseMapping + offGuestHeapMemory;
+ rc = VBoxHGSMISetupGuestContext(&pVBox->guestCtx, pvGuestHeapMemory, cbGuestHeapMemory,
+ offVRAMBaseMapping + offGuestHeapMemory, &g_hgsmiEnv);
+ AssertMsg(RT_SUCCESS(rc), ("Failed to set up the guest-to-host message buffer heap, rc=%d\n", rc));
+ pVBox->cbView = offVRAMBaseMapping;
+}
+
+/** Callback to fill in the view structures */
+static DECLCALLBACK(int) vboxFillViewInfo(void *pvVBox, struct VBVAINFOVIEW *pViews, uint32_t cViews)
+{
+ VBOXPtr pVBox = (VBOXPtr)pvVBox;
+ unsigned i;
+ for (i = 0; i < cViews; ++i)
+ {
+ pViews[i].u32ViewIndex = i;
+ pViews[i].u32ViewOffset = 0;
+ pViews[i].u32ViewSize = pVBox->cbView;
+ pViews[i].u32MaxScreenSize = pVBox->cbFBMax;
+ }
+ return VINF_SUCCESS;
+}
+
+/**
+ * Initialise VirtualBox's accelerated video extensions.
+ *
+ * @returns TRUE on success, FALSE on failure
+ */
+static Bool vboxSetupVRAMVbva(VBOXPtr pVBox)
+{
+ int rc = VINF_SUCCESS;
+ unsigned i;
+
+ pVBox->cbFBMax = pVBox->cbView;
+ for (i = 0; i < pVBox->cScreens; ++i)
+ {
+ pVBox->cbFBMax -= VBVA_MIN_BUFFER_SIZE;
+ pVBox->pScreens[i].aoffVBVABuffer = pVBox->cbFBMax;
+ TRACE_LOG("VBVA buffer offset for screen %u: 0x%lx\n", i,
+ (unsigned long) pVBox->cbFBMax);
+ VBoxVBVASetupBufferContext(&pVBox->pScreens[i].aVbvaCtx,
+ pVBox->pScreens[i].aoffVBVABuffer,
+ VBVA_MIN_BUFFER_SIZE);
+ }
+ TRACE_LOG("Maximum framebuffer size: %lu (0x%lx)\n",
+ (unsigned long) pVBox->cbFBMax,
+ (unsigned long) pVBox->cbFBMax);
+ rc = VBoxHGSMISendViewInfo(&pVBox->guestCtx, pVBox->cScreens,
+ vboxFillViewInfo, (void *)pVBox);
+ AssertMsg(RT_SUCCESS(rc), ("Failed to send the view information to the host, rc=%d\n", rc));
+ return TRUE;
+}
+
+static Bool haveHGSMIModeHintAndCursorReportingInterface(VBOXPtr pVBox)
+{
+ uint32_t fModeHintReporting, fCursorReporting;
+
+ return RT_SUCCESS(VBoxQueryConfHGSMI(&pVBox->guestCtx, VBOX_VBVA_CONF32_MODE_HINT_REPORTING, &fModeHintReporting))
+ && RT_SUCCESS(VBoxQueryConfHGSMI(&pVBox->guestCtx, VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING, &fCursorReporting))
+ && fModeHintReporting == VINF_SUCCESS
+ && fCursorReporting == VINF_SUCCESS;
+}
+
+static Bool hostHasScreenBlankingFlag(VBOXPtr pVBox)
+{
+ uint32_t fScreenFlags;
+
+ return RT_SUCCESS(VBoxQueryConfHGSMI(&pVBox->guestCtx, VBOX_VBVA_CONF32_SCREEN_FLAGS, &fScreenFlags))
+ && fScreenFlags & VBVA_SCREEN_F_BLANK;
+}
+
+/**
+ * Inform VBox that we will supply it with dirty rectangle information
+ * and install the dirty rectangle handler.
+ *
+ * @returns TRUE for success, FALSE for failure
+ * @param pScrn Pointer to a structure describing the X screen in use
+ */
+Bool
+vboxEnableVbva(ScrnInfoPtr pScrn)
+{
+ Bool rc = TRUE;
+ unsigned i;
+ VBOXPtr pVBox = pScrn->driverPrivate;
+
+ TRACE_ENTRY();
+ if (!vboxSetupVRAMVbva(pVBox))
+ return FALSE;
+ for (i = 0; i < pVBox->cScreens; ++i)
+ {
+ struct VBVABUFFER *pVBVA;
+
+ pVBVA = (struct VBVABUFFER *) ( ((uint8_t *)pVBox->base)
+ + pVBox->pScreens[i].aoffVBVABuffer);
+ if (!VBoxVBVAEnable(&pVBox->pScreens[i].aVbvaCtx, &pVBox->guestCtx,
+ pVBVA, i))
+ rc = FALSE;
+ }
+ AssertMsg(rc, ("Failed to enable screen update reporting for at least one virtual monitor.\n"));
+ pVBox->fHaveHGSMIModeHints = haveHGSMIModeHintAndCursorReportingInterface(pVBox);
+ pVBox->fHostHasScreenBlankingFlag = hostHasScreenBlankingFlag(pVBox);
+ return rc;
+}
+
+/**
+ * Inform VBox that we will stop supplying it with dirty rectangle
+ * information. This function is intended to be called when an X
+ * virtual terminal is disabled, or the X server is terminated.
+ *
+ * @param pScrn Pointer to a structure describing the X screen in use
+ */
+void
+vboxDisableVbva(ScrnInfoPtr pScrn)
+{
+ unsigned i;
+ VBOXPtr pVBox = pScrn->driverPrivate;
+
+ TRACE_ENTRY();
+ for (i = 0; i < pVBox->cScreens; ++i)
+ VBoxVBVADisable(&pVBox->pScreens[i].aVbvaCtx, &pVBox->guestCtx, i);
+}
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