setmode.c revision c87c6e10b608762972b76bfc734daaec9070b50b
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Linux Additions X11 graphics driver, mode setting
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Copyright (C) 2006-2013 Oracle Corporation
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * available from http://www.virtualbox.org. This file is free software;
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * you can redistribute it and/or modify it under the terms of the GNU
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * General Public License (GPL) as published by the Free Software
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * --------------------------------------------------------------------
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This code is based on:
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * X11 VESA driver
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * Copyright (c) 2000 by Conectiva S.A. (http://www.conectiva.com)
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * Permission is hereby granted, free of charge, to any person obtaining a
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * copy of this software and associated documentation files (the "Software"),
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * to deal in the Software without restriction, including without limitation
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * the rights to use, copy, modify, merge, publish, distribute, sublicense,
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * and/or sell copies of the Software, and to permit persons to whom the
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * Software is furnished to do so, subject to the following conditions:
e41f0459369a6d814aa36bf4def225482fc56026vboxsync * The above copyright notice and this permission notice shall be included in
e41f0459369a6d814aa36bf4def225482fc56026vboxsync * all copies or substantial portions of the Software.
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
43747b1f0bc8302a238fb35e55857a5e9aa1933dvboxsync * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
0b5a8573f70560f0fd30c01151fcdc0e71984276vboxsync * CONECTIVA LINUX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * SOFTWARE.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Except as contained in this notice, the name of Conectiva Linux shall
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * not be used in advertising or otherwise to promote the sale, use or other
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * dealings in this Software without prior written authorization from
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Conectiva Linux.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Authors: Paulo César Pereira de Andrade <pcpa@conectiva.com.br>
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/* We include <unistd.h> for Solaris below, and the ANSI C emulation layer
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * interferes with that. */
d03c6bcd3d78cef8ac4d76186e7c0e72f63ce80fvboxsync/* VGA hardware functions for setting and restoring text mode */
cfb3a8ae5e9668de4506cf5c053b8009bcc89dafvboxsync/** Clear the virtual framebuffer in VRAM. Optionally also clear up to the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * size of a new framebuffer. Framebuffer sizes larger than available VRAM
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * be treated as zero and passed over. */
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsyncvoid vboxClearVRAM(ScrnInfoPtr pScrn, int32_t cNewX, int32_t cNewY)
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync/** Set a graphics mode. Poke any required values into registers, do an HGSMI
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync * mode set and tell the host we support advanced graphics functions. This
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync * procedure is complicated by the fact that X.Org can implicitly disable a
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync * screen by resizing the virtual framebuffer so that the screen is no longer
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync * inside it. We have to spot and handle this.
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsyncBool VBOXSetMode(ScrnInfoPtr pScrn, unsigned cDisplay, unsigned cWidth,
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync unsigned cHeight, int x, int y)
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync TRACE_LOG("cDisplay=%u, cWidth=%u, cHeight=%u, x=%d, y=%d, displayWidth=%d\n",
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync cDisplay, cWidth, cHeight, x, y, pScrn->displayWidth);
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync offStart = y * pVBox->cbLine + x * vboxBPP(pScrn) / 8;
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync /* Deactivate the screen if the mode - specifically the virtual width - is
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync * too large for VRAM as we sometimes have to do this - see comments in
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync * VBOXPreInit. */
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync if ( offStart + pVBox->cbLine * cHeight > pVBox->cbFBMax
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync || pVBox->cbLine * pScrn->virtualY > pVBox->cbFBMax)
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync /* Deactivate the screen if it is outside of the virtual framebuffer and
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync * clamp it to lie inside if it is partly outside. */
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync if (x >= pScrn->displayWidth || x + (int) cWidth <= 0)
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync cwReal = RT_MIN((int) cWidth, pScrn->displayWidth - x);
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync TRACE_LOG("pVBox->pScreens[%u].fCrtcEnabled=%d, fOutputEnabled=%d\n",
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync cDisplay, (int)pVBox->pScreens[cDisplay].fCrtcEnabled,
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync VBoxVideoSetModeRegisters(cwReal, cHeight, pScrn->displayWidth,
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync fFlags |= (pVBox->pScreens[cDisplay].afConnected ? 0
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync VBoxHGSMIProcessDisplayInfo(&pVBox->guestCtx, cDisplay, x, y,
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync rc = VBoxHGSMIUpdateInputMapping(&pVBox->guestCtx, 0 - pVBox->pScreens[0].aScreenLocation.x,
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync 0 - pVBox->pScreens[0].aScreenLocation.y, pScrn->virtualX, pScrn->virtualY);
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync FatalError("Failed to update the input mapping.\n");
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync/** Resize the virtual framebuffer. After resizing we reset all modes
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync * (X.Org 1.3+) to adjust them to the new framebuffer.
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsyncBool VBOXAdjustScreenPixmap(ScrnInfoPtr pScrn, int width, int height)
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync PixmapPtr pPixmap = pScreen->GetScreenPixmap(pScreen);
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync int displayWidth = vboxDisplayPitch(pScrn, cbLine);
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync "Failed to get the screen pixmap.\n");
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync if (cbLine > UINT32_MAX || cbLine * height >= pVBox->cbFBMax)
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync "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",
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync width, height, pVBox->cbFBMax / 1024, pScrn->videoRam);
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync pScreen->ModifyPixmapHeader(pPixmap, width, height,
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync /* Write the new values to the hardware */
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync /** @todo why is this only for VBOXVIDEO_13? */
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync unsigned i;
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync VBOXSetMode(pScrn, i, pVBox->pScreens[i].aScreenLocation.cx,
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync rc = VBoxHGSMIUpdateInputMapping(&pVBox->guestCtx, 0 - pVBox->pScreens[0].aScreenLocation.x,
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync 0 - pVBox->pScreens[0].aScreenLocation.y, pScrn->virtualX, pScrn->virtualY);
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync FatalError("Failed to update the input mapping.\n");
cea26cf0a0d390c2cca75cb19cb0e86c580e9d77vboxsync /* Tell the virtual mouse device about the new virtual desktop size. */