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/* $Id: setmode.c $ */
/** @file
*
* Linux Additions X11 graphics driver, mode setting
*/
/*
* Copyright (C) 2006-2013 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
* --------------------------------------------------------------------
*
* This code is based on:
*
* X11 VESA driver
*
* Copyright (c) 2000 by Conectiva S.A. (http://www.conectiva.com)
*
* 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
* CONECTIVA LINUX 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.
*
* Except as contained in this notice, the name of Conectiva Linux shall
* not be used in advertising or otherwise to promote the sale, use or other
* dealings in this Software without prior written authorization from
* Conectiva Linux.
*
* Authors: Paulo César Pereira de Andrade <pcpa@conectiva.com.br>
*/
#ifdef XORG_7X
/* We include <unistd.h> for Solaris below, and the ANSI C emulation layer
* interferes with that. */
# define _XF86_ANSIC_H
# define XF86_LIBC_H
# include <string.h>
#endif
#include "vboxvideo.h"
#include "version-generated.h"
#include "product-generated.h"
#include "xf86.h"
/* VGA hardware functions for setting and restoring text mode */
#include "vgaHW.h"
#ifdef RT_OS_SOLARIS
# include <sys/vuid_event.h>
# include <sys/msio.h>
# include <errno.h>
# include <fcntl.h>
# include <unistd.h>
#endif
/** Clear the virtual framebuffer in VRAM. Optionally also clear up to the
* size of a new framebuffer. Framebuffer sizes larger than available VRAM
* be treated as zero and passed over. */
void vboxClearVRAM(ScrnInfoPtr pScrn, int32_t cNewX, int32_t cNewY)
{
VBOXPtr pVBox = VBOXGetRec(pScrn);
uint64_t cbOldFB, cbNewFB;
cbOldFB = pVBox->cbLine * pScrn->virtualX;
cbNewFB = vboxLineLength(pScrn, cNewX) * cNewY;
if (cbOldFB > (uint64_t)pVBox->cbFBMax)
cbOldFB = 0;
if (cbNewFB > (uint64_t)pVBox->cbFBMax)
cbNewFB = 0;
memset(pVBox->base, 0, max(cbOldFB, cbNewFB));
}
/** Set a graphics mode. Poke any required values into registers, do an HGSMI
* mode set and tell the host we support advanced graphics functions. This
* procedure is complicated by the fact that X.Org can implicitly disable a
* screen by resizing the virtual framebuffer so that the screen is no longer
* inside it. We have to spot and handle this.
*/
Bool VBOXSetMode(ScrnInfoPtr pScrn, unsigned cDisplay, unsigned cWidth,
unsigned cHeight, int x, int y)
{
VBOXPtr pVBox = VBOXGetRec(pScrn);
uint32_t offStart, cwReal = cWidth;
TRACE_LOG("cDisplay=%u, cWidth=%u, cHeight=%u, x=%d, y=%d, displayWidth=%d\n",
cDisplay, cWidth, cHeight, x, y, pScrn->displayWidth);
offStart = y * pVBox->cbLine + x * vboxBPP(pScrn) / 8;
/* Deactivate the screen if the mode - specifically the virtual width - is
* too large for VRAM as we sometimes have to do this - see comments in
* VBOXPreInit. */
if ( offStart + pVBox->cbLine * cHeight > pVBox->cbFBMax
|| pVBox->cbLine * pScrn->virtualY > pVBox->cbFBMax)
return FALSE;
/* Deactivate the screen if it is outside of the virtual framebuffer and
* clamp it to lie inside if it is partly outside. */
if (x >= pScrn->displayWidth || x + (int) cWidth <= 0)
return FALSE;
else
cwReal = RT_MIN((int) cWidth, pScrn->displayWidth - x);
TRACE_LOG("pVBox->afDisabled[%u]=%d\n",
cDisplay, (int)pVBox->afDisabled[cDisplay]);
if (cDisplay == 0)
VBoxVideoSetModeRegisters(cwReal, cHeight, pScrn->displayWidth,
vboxBPP(pScrn), 0, x, y);
/* Tell the host we support graphics */
if (vbox_device_available(pVBox))
vboxEnableGraphicsCap(pVBox);
if (pVBox->fHaveHGSMI)
{
uint16_t fFlags = VBVA_SCREEN_F_ACTIVE;
fFlags |= (pVBox->afDisabled[cDisplay] ? VBVA_SCREEN_F_DISABLED : 0);
VBoxHGSMIProcessDisplayInfo(&pVBox->guestCtx, cDisplay, x, y,
offStart, pVBox->cbLine, cwReal, cHeight,
vboxBPP(pScrn), fFlags);
}
return TRUE;
}
/** Resize the virtual framebuffer. After resizing we reset all modes
* (X.Org 1.3+) to adjust them to the new framebuffer.
*/
Bool VBOXAdjustScreenPixmap(ScrnInfoPtr pScrn, int width, int height)
{
ScreenPtr pScreen = pScrn->pScreen;
PixmapPtr pPixmap = pScreen->GetScreenPixmap(pScreen);
VBOXPtr pVBox = VBOXGetRec(pScrn);
uint64_t cbLine = vboxLineLength(pScrn, width);
int displayWidth = vboxDisplayPitch(pScrn, cbLine);
TRACE_LOG("width=%d, height=%d\n", width, height);
if ( width == pScrn->virtualX
&& height == pScrn->virtualY
&& displayWidth == pScrn->displayWidth)
return TRUE;
if (!pPixmap) {
xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
"Failed to get the screen pixmap.\n");
return FALSE;
}
if (cbLine > UINT32_MAX || cbLine * height >= pVBox->cbFBMax)
{
xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
"Unable to set up a virtual screen size of %dx%d with %lu of %d Kb of video memory available. Please increase the video memory size.\n",
width, height, pVBox->cbFBMax / 1024, pScrn->videoRam);
return FALSE;
}
pScreen->ModifyPixmapHeader(pPixmap, width, height,
pScrn->depth, vboxBPP(pScrn), cbLine,
pVBox->base);
vboxClearVRAM(pScrn, width, height);
pScrn->virtualX = width;
pScrn->virtualY = height;
pScrn->displayWidth = displayWidth;
pVBox->cbLine = cbLine;
#ifdef VBOX_DRI_OLD
if (pVBox->useDRI)
VBOXDRIUpdateStride(pScrn, pVBox);
#endif
#ifdef VBOXVIDEO_13
/* Write the new values to the hardware */
{
unsigned i;
for (i = 0; i < pVBox->cScreens; ++i)
VBOXSetMode(pScrn, i, pVBox->aScreenLocation[i].cx,
pVBox->aScreenLocation[i].cy,
pVBox->aScreenLocation[i].x,
pVBox->aScreenLocation[i].y);
}
#endif
#ifdef RT_OS_SOLARIS
/* Tell the virtual mouse device about the new virtual desktop size. */
{
int rc;
int hMouse = open("/dev/mouse", O_RDWR);
if (hMouse >= 0)
{
do {
Ms_screen_resolution Res = { height, width };
rc = ioctl(hMouse, MSIOSRESOLUTION, &Res);
} while ((rc != 0) && (errno == EINTR));
close(hMouse);
}
}
#endif
return TRUE;
}
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