setmode.c revision 23ff0a80f28ba27da3cb458face82665fe65e96c
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * Linux Additions X11 graphics driver, mode setting
c58f1213e628a545081c70e26c6b67a841cff880vboxsync * Copyright (C) 2006-2013 Oracle Corporation
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * available from http://www.virtualbox.org. This file is free software;
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * you can redistribute it and/or modify it under the terms of the GNU
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * General Public License (GPL) as published by the Free Software
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * --------------------------------------------------------------------
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * This code is based on:
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * X11 VESA driver
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * Copyright (c) 2000 by Conectiva S.A. (http://www.conectiva.com)
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * Permission is hereby granted, free of charge, to any person obtaining a
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * copy of this software and associated documentation files (the "Software"),
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * to deal in the Software without restriction, including without limitation
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * the rights to use, copy, modify, merge, publish, distribute, sublicense,
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * and/or sell copies of the Software, and to permit persons to whom the
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * Software is furnished to do so, subject to the following conditions:
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * The above copyright notice and this permission notice shall be included in
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * all copies or substantial portions of the Software.
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * CONECTIVA LINUX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * SOFTWARE.
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * Except as contained in this notice, the name of Conectiva Linux shall
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * not be used in advertising or otherwise to promote the sale, use or other
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * dealings in this Software without prior written authorization from
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * Conectiva Linux.
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync * Authors: Paulo César Pereira de Andrade <pcpa@conectiva.com.br>
d9b086bc8f68cd04745f397f8db45fca87c14365vboxsync/* We include <unistd.h> for Solaris below, and the ANSI C emulation layer
d9b086bc8f68cd04745f397f8db45fca87c14365vboxsync * interferes with that. */
957e0fcedf2079feefdb1aa2d0da65e39cd8479cvboxsync/* VGA hardware functions for setting and restoring text mode */
b27ea9ec24c539f55433c8c33d0219f14fb354d5vboxsync/** Clear the virtual framebuffer in VRAM. Optionally also clear up to the
b27ea9ec24c539f55433c8c33d0219f14fb354d5vboxsync * size of a new framebuffer. Framebuffer sizes larger than available VRAM
b27ea9ec24c539f55433c8c33d0219f14fb354d5vboxsync * be treated as zero and passed over. */
b27ea9ec24c539f55433c8c33d0219f14fb354d5vboxsyncvoid vbvxClearVRAM(ScrnInfoPtr pScrn, size_t cbOldSize, size_t cbNewSize)
b27ea9ec24c539f55433c8c33d0219f14fb354d5vboxsync /* Assume 32BPP - this is just a sanity test. */
b27ea9ec24c539f55433c8c33d0219f14fb354d5vboxsync VBVXASSERT( cbOldSize / 4 <= VBOX_VIDEO_MAX_VIRTUAL * VBOX_VIDEO_MAX_VIRTUAL
b27ea9ec24c539f55433c8c33d0219f14fb354d5vboxsync && cbNewSize / 4 <= VBOX_VIDEO_MAX_VIRTUAL * VBOX_VIDEO_MAX_VIRTUAL,
b27ea9ec24c539f55433c8c33d0219f14fb354d5vboxsync ("cbOldSize=%llu cbNewSize=%llu, max=%u.\n", (unsigned long long)cbOldSize, (unsigned long long)cbNewSize,
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync/** Clear the virtual framebuffer in VRAM. Optionally also clear up to the
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * size of a new framebuffer. Framebuffer sizes larger than available VRAM
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * be treated as zero and passed over. */
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsyncvoid vboxClearVRAM(ScrnInfoPtr pScrn, int32_t cNewX, int32_t cNewY)
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync/** Set a graphics mode. Poke any required values into registers, do an HGSMI
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync * mode set and tell the host we support advanced graphics functions.
81b61357ada6821d8257b3d147a4d4309fcb2fa7vboxsyncvoid vbvxSetMode(ScrnInfoPtr pScrn, unsigned cDisplay, unsigned cWidth, unsigned cHeight, int x, int y, bool fEnabled,
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync bool fConnected, struct vbvxFrameBuffer *pFrameBuffer)
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync bool fEnabledAndVisible = fEnabled && x + cWidth <= pFrameBuffer->cWidth && y + cHeight <= pFrameBuffer->cHeight;
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync /* Recent host code has a flag to blank the screen; older code needs BPP set to zero. */
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync uint32_t cBPP = fEnabledAndVisible || pVBox->fHostHasScreenBlankingFlag ? pFrameBuffer->cBPP : 0;
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync TRACE_LOG("cDisplay=%u, cWidth=%u, cHeight=%u, x=%d, y=%d, fEnabled=%d, fConnected=%d, pFrameBuffer: { x0=%d, y0=%d, cWidth=%u, cHeight=%u, cBPP=%u }\n",
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync cDisplay, cWidth, cHeight, x, y, fEnabled, fConnected, pFrameBuffer->x0, pFrameBuffer->y0, pFrameBuffer->cWidth,
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync VBVXASSERT(cWidth != 0 && cHeight != 0, ("cWidth = 0 or cHeight = 0\n"));
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync offStart = (y * pFrameBuffer->cWidth + x) * pFrameBuffer->cBPP / 8;
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync VBoxVideoSetModeRegisters(cWidth, cHeight, pFrameBuffer->cWidth, pFrameBuffer->cBPP, 0, x, y);
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync fFlags |= (fConnected ? 0 : VBVA_SCREEN_F_DISABLED);
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync fFlags |= (!fEnabledAndVisible && pVBox->fHostHasScreenBlankingFlag ? VBVA_SCREEN_F_BLANK : 0);
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync VBoxHGSMIProcessDisplayInfo(&pVBox->guestCtx, cDisplay, x - pFrameBuffer->x0, y - pFrameBuffer->y0, offStart,
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync pFrameBuffer->cWidth * pFrameBuffer->cBPP / 8, cWidth, cHeight, cBPP, fFlags);
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync rc = VBoxHGSMIUpdateInputMapping(&pVBox->guestCtx, 0 - pFrameBuffer->x0, 0 - pFrameBuffer->y0, pFrameBuffer->cWidth,
10028648143893a0291db53b6a5f7d061f8b0fa8vboxsync FatalError("Failed to update the input mapping.\n");
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync/** Set a graphics mode. Poke any required values into registers, do an HGSMI
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * mode set and tell the host we support advanced graphics functions. This
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * procedure is complicated by the fact that X.Org can implicitly disable a
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * screen by resizing the virtual framebuffer so that the screen is no longer
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * inside it. We have to spot and handle this.
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsyncBool VBOXSetMode(ScrnInfoPtr pScrn, unsigned cDisplay, unsigned cWidth,
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync unsigned cHeight, int x, int y)
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync TRACE_LOG("cDisplay=%u, cWidth=%u, cHeight=%u, x=%d, y=%d, displayWidth=%d\n",
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync cDisplay, cWidth, cHeight, x, y, pScrn->displayWidth);
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync offStart = y * pVBox->cbLine + x * vboxBPP(pScrn) / 8;
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync /* Deactivate the screen if the mode - specifically the virtual width - is
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * too large for VRAM as we sometimes have to do this - see comments in
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * VBOXPreInit. */
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync if ( offStart + pVBox->cbLine * cHeight > pVBox->cbFBMax
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync || pVBox->cbLine * pScrn->virtualY > pVBox->cbFBMax)
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync /* Deactivate the screen if it is outside of the virtual framebuffer and
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * clamp it to lie inside if it is partly outside. */
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync if (x >= pScrn->displayWidth || x + (int) cWidth <= 0)
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync cwReal = RT_MIN((int) cWidth, pScrn->displayWidth - x);
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync TRACE_LOG("pVBox->pScreens[%u].fCrtcEnabled=%d, fOutputEnabled=%d\n",
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync cDisplay, (int)pVBox->pScreens[cDisplay].fCrtcEnabled,
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync VBoxVideoSetModeRegisters(cwReal, cHeight, pScrn->displayWidth,
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync fFlags |= (pVBox->pScreens[cDisplay].afConnected ? 0
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync VBoxHGSMIProcessDisplayInfo(&pVBox->guestCtx, cDisplay, x, y,
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync rc = VBoxHGSMIUpdateInputMapping(&pVBox->guestCtx, 0 - pVBox->pScreens[0].aScreenLocation.x,
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync 0 - pVBox->pScreens[0].aScreenLocation.y, pScrn->virtualX, pScrn->virtualY);
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync FatalError("Failed to update the input mapping.\n");
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync/** Resize the virtual framebuffer. After resizing we reset all modes
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync * (X.Org 1.3+) to adjust them to the new framebuffer.
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsyncBool VBOXAdjustScreenPixmap(ScrnInfoPtr pScrn, int width, int height)
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync PixmapPtr pPixmap = pScreen->GetScreenPixmap(pScreen);
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync int displayWidth = vboxDisplayPitch(pScrn, cbLine);
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync "Failed to get the screen pixmap.\n");
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync if (cbLine > UINT32_MAX || cbLine * height >= pVBox->cbFBMax)
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync "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",
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync width, height, pVBox->cbFBMax / 1024, pScrn->videoRam);
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync pScreen->ModifyPixmapHeader(pPixmap, width, height,
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync /* Write the new values to the hardware */
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync /** @todo why is this only for VBOXVIDEO_13? */
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync unsigned i;
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync VBOXSetMode(pScrn, i, pVBox->pScreens[i].aScreenLocation.cx,
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync rc = VBoxHGSMIUpdateInputMapping(&pVBox->guestCtx, 0 - pVBox->pScreens[0].aScreenLocation.x,
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync 0 - pVBox->pScreens[0].aScreenLocation.y, pScrn->virtualX, pScrn->virtualY);
23ff0a80f28ba27da3cb458face82665fe65e96cvboxsync FatalError("Failed to update the input mapping.\n");
ef84500df40b6e627171081e8b56cd7358bf7e58vboxsync/** Tell the virtual mouse device about the new virtual desktop size. */