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/* $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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