| 1 | /* $Id: setmode.c 54531 2015-02-26 14:05:57Z vboxsync $ */
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| 2 | /** @file
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| 3 | *
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| 4 | * Linux Additions X11 graphics driver, mode setting
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (C) 2006-2013 Oracle Corporation
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| 9 | *
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| 10 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 11 | * available from http://www.virtualbox.org. This file is free software;
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| 12 | * you can redistribute it and/or modify it under the terms of the GNU
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| 13 | * General Public License (GPL) as published by the Free Software
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| 14 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 15 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 16 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 17 | * --------------------------------------------------------------------
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| 18 | *
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| 19 | * This code is based on:
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| 20 | *
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| 21 | * X11 VESA driver
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| 22 | *
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| 23 | * Copyright (c) 2000 by Conectiva S.A. (http://www.conectiva.com)
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| 24 | *
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| 25 | * Permission is hereby granted, free of charge, to any person obtaining a
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| 26 | * copy of this software and associated documentation files (the "Software"),
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| 27 | * to deal in the Software without restriction, including without limitation
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| 28 | * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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| 29 | * and/or sell copies of the Software, and to permit persons to whom the
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| 30 | * Software is furnished to do so, subject to the following conditions:
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| 31 | *
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| 32 | * The above copyright notice and this permission notice shall be included in
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| 33 | * all copies or substantial portions of the Software.
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| 34 | *
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| 35 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 36 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 37 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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| 38 | * CONECTIVA LINUX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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| 39 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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| 40 | * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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| 41 | * SOFTWARE.
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| 42 | *
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| 43 | * Except as contained in this notice, the name of Conectiva Linux shall
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| 44 | * not be used in advertising or otherwise to promote the sale, use or other
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| 45 | * dealings in this Software without prior written authorization from
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| 46 | * Conectiva Linux.
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| 47 | *
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| 48 | * Authors: Paulo César Pereira de Andrade <[email protected]>
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| 49 | */
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| 50 |
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| 51 | #ifdef XORG_7X
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| 52 | /* We include <unistd.h> for Solaris below, and the ANSI C emulation layer
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| 53 | * interferes with that. */
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| 54 | # define _XF86_ANSIC_H
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| 55 | # define XF86_LIBC_H
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| 56 | # include <string.h>
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| 57 | #endif
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| 58 | #include "vboxvideo.h"
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| 59 | #include "version-generated.h"
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| 60 | #include "product-generated.h"
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| 61 | #include "xf86.h"
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| 62 |
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| 63 | /* VGA hardware functions for setting and restoring text mode */
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| 64 | #include "vgaHW.h"
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| 65 |
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| 66 | #ifdef RT_OS_SOLARIS
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| 67 | # include <sys/vuid_event.h>
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| 68 | # include <sys/msio.h>
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| 69 | # include <errno.h>
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| 70 | # include <fcntl.h>
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| 71 | # include <unistd.h>
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| 72 | #endif
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| 73 |
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| 74 | /** Clear the virtual framebuffer in VRAM. Optionally also clear up to the
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| 75 | * size of a new framebuffer. Framebuffer sizes larger than available VRAM
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| 76 | * be treated as zero and passed over. */
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| 77 | void vboxClearVRAM(ScrnInfoPtr pScrn, int32_t cNewX, int32_t cNewY)
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| 78 | {
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| 79 | VBOXPtr pVBox = VBOXGetRec(pScrn);
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| 80 | uint64_t cbOldFB, cbNewFB;
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| 81 |
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| 82 | cbOldFB = pVBox->cbLine * pScrn->virtualX;
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| 83 | cbNewFB = vboxLineLength(pScrn, cNewX) * cNewY;
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| 84 | if (cbOldFB > (uint64_t)pVBox->cbFBMax)
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| 85 | cbOldFB = 0;
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| 86 | if (cbNewFB > (uint64_t)pVBox->cbFBMax)
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| 87 | cbNewFB = 0;
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| 88 | memset(pVBox->base, 0, max(cbOldFB, cbNewFB));
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| 89 | }
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| 90 |
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| 91 | /** Set a graphics mode. Poke any required values into registers, do an HGSMI
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| 92 | * mode set and tell the host we support advanced graphics functions. This
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| 93 | * procedure is complicated by the fact that X.Org can implicitly disable a
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| 94 | * screen by resizing the virtual framebuffer so that the screen is no longer
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| 95 | * inside it. We have to spot and handle this.
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| 96 | */
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| 97 | Bool VBOXSetMode(ScrnInfoPtr pScrn, unsigned cDisplay, unsigned cWidth,
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| 98 | unsigned cHeight, int x, int y)
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| 99 | {
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| 100 | VBOXPtr pVBox = VBOXGetRec(pScrn);
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| 101 | uint32_t offStart, cwReal = cWidth;
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| 102 | bool fEnabled;
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| 103 | uint16_t fFlags;
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| 104 | int rc;
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| 105 |
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| 106 | TRACE_LOG("cDisplay=%u, cWidth=%u, cHeight=%u, x=%d, y=%d, displayWidth=%d\n",
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| 107 | cDisplay, cWidth, cHeight, x, y, pScrn->displayWidth);
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| 108 | offStart = y * pVBox->cbLine + x * vboxBPP(pScrn) / 8;
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| 109 | /* Deactivate the screen if the mode - specifically the virtual width - is
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| 110 | * too large for VRAM as we sometimes have to do this - see comments in
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| 111 | * VBOXPreInit. */
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| 112 | if ( offStart + pVBox->cbLine * cHeight > pVBox->cbFBMax
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| 113 | || pVBox->cbLine * pScrn->virtualY > pVBox->cbFBMax)
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| 114 | return FALSE;
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| 115 | /* Deactivate the screen if it is outside of the virtual framebuffer and
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| 116 | * clamp it to lie inside if it is partly outside. */
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| 117 | if (x >= pScrn->displayWidth || x + (int) cWidth <= 0)
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| 118 | return FALSE;
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| 119 | else
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| 120 | cwReal = RT_MIN((int) cWidth, pScrn->displayWidth - x);
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| 121 | TRACE_LOG("pVBox->pScreens[%u].fCrtcEnabled=%d, fOutputEnabled=%d\n",
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| 122 | cDisplay, (int)pVBox->pScreens[cDisplay].fCrtcEnabled,
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| 123 | (int)pVBox->pScreens[cDisplay].fOutputEnabled);
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| 124 | if (cDisplay == 0)
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| 125 | VBoxVideoSetModeRegisters(cwReal, cHeight, pScrn->displayWidth,
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| 126 | vboxBPP(pScrn), 0, x, y);
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| 127 | fEnabled = pVBox->pScreens[cDisplay].fCrtcEnabled
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| 128 | && pVBox->pScreens[cDisplay].fOutputEnabled;
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| 129 | fFlags = VBVA_SCREEN_F_ACTIVE;
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| 130 | fFlags |= (pVBox->pScreens[cDisplay].afConnected ? 0
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| 131 | : VBVA_SCREEN_F_DISABLED);
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| 132 | VBoxHGSMIProcessDisplayInfo(&pVBox->guestCtx, cDisplay, x, y,
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| 133 | offStart, pVBox->cbLine, cwReal, cHeight,
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| 134 | fEnabled ? vboxBPP(pScrn) : 0, fFlags);
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| 135 | if (cDisplay == 0)
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| 136 | {
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| 137 | rc = VBoxHGSMIUpdateInputMapping(&pVBox->guestCtx, 0 - pVBox->pScreens[0].aScreenLocation.x,
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| 138 | 0 - pVBox->pScreens[0].aScreenLocation.y, pScrn->virtualX, pScrn->virtualY);
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| 139 | if (RT_FAILURE(rc))
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| 140 | FatalError("Failed to update the input mapping.\n");
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| 141 | }
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| 142 | return TRUE;
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| 143 | }
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| 144 |
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| 145 | /** Resize the virtual framebuffer. After resizing we reset all modes
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| 146 | * (X.Org 1.3+) to adjust them to the new framebuffer.
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| 147 | */
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| 148 | Bool VBOXAdjustScreenPixmap(ScrnInfoPtr pScrn, int width, int height)
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| 149 | {
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| 150 | ScreenPtr pScreen = pScrn->pScreen;
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| 151 | PixmapPtr pPixmap = pScreen->GetScreenPixmap(pScreen);
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| 152 | VBOXPtr pVBox = VBOXGetRec(pScrn);
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| 153 | uint64_t cbLine = vboxLineLength(pScrn, width);
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| 154 | int displayWidth = vboxDisplayPitch(pScrn, cbLine);
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| 155 | int rc;
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| 156 |
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| 157 | TRACE_LOG("width=%d, height=%d\n", width, height);
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| 158 | if ( width == pScrn->virtualX
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| 159 | && height == pScrn->virtualY
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| 160 | && displayWidth == pScrn->displayWidth)
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| 161 | return TRUE;
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| 162 | if (!pPixmap) {
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| 163 | xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
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| 164 | "Failed to get the screen pixmap.\n");
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| 165 | return FALSE;
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| 166 | }
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| 167 | if (cbLine > UINT32_MAX || cbLine * height >= pVBox->cbFBMax)
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| 168 | {
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| 169 | xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
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| 170 | "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",
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| 171 | width, height, pVBox->cbFBMax / 1024, pScrn->videoRam);
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| 172 | return FALSE;
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| 173 | }
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| 174 | pScreen->ModifyPixmapHeader(pPixmap, width, height,
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| 175 | pScrn->depth, vboxBPP(pScrn), cbLine,
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| 176 | pVBox->base);
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| 177 | vboxClearVRAM(pScrn, width, height);
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| 178 | pScrn->virtualX = width;
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| 179 | pScrn->virtualY = height;
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| 180 | pScrn->displayWidth = displayWidth;
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| 181 | pVBox->cbLine = cbLine;
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| 182 | #ifdef VBOX_DRI_OLD
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| 183 | if (pVBox->useDRI)
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| 184 | VBOXDRIUpdateStride(pScrn, pVBox);
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| 185 | #endif
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| 186 | #ifdef VBOXVIDEO_13
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| 187 | /* Write the new values to the hardware */
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| 188 | /** @todo why is this only for VBOXVIDEO_13? */
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| 189 | {
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| 190 | unsigned i;
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| 191 | for (i = 0; i < pVBox->cScreens; ++i)
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| 192 | VBOXSetMode(pScrn, i, pVBox->pScreens[i].aScreenLocation.cx,
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| 193 | pVBox->pScreens[i].aScreenLocation.cy,
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| 194 | pVBox->pScreens[i].aScreenLocation.x,
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| 195 | pVBox->pScreens[i].aScreenLocation.y);
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| 196 | }
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| 197 | #else
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| 198 | rc = VBoxHGSMIUpdateInputMapping(&pVBox->guestCtx, 0 - pVBox->pScreens[0].aScreenLocation.x,
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| 199 | 0 - pVBox->pScreens[0].aScreenLocation.y, pScrn->virtualX, pScrn->virtualY);
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| 200 | if (RT_FAILURE(rc))
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| 201 | FatalError("Failed to update the input mapping.\n");
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| 202 | #endif
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| 203 | #ifdef RT_OS_SOLARIS
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| 204 | /* Tell the virtual mouse device about the new virtual desktop size. */
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| 205 | {
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| 206 | int rc;
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| 207 | int hMouse = open("/dev/mouse", O_RDWR);
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| 208 | if (hMouse >= 0)
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| 209 | {
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| 210 | do {
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| 211 | Ms_screen_resolution Res = { height, width };
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| 212 | rc = ioctl(hMouse, MSIOSRESOLUTION, &Res);
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| 213 | } while ((rc != 0) && (errno == EINTR));
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| 214 | close(hMouse);
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| 215 | }
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| 216 | }
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| 217 | #endif
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| 218 | return TRUE;
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| 219 | }
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