/* $Id: vboxvideo.c 35150 2010-12-15 16:33:59Z vboxsync $ */ /** @file * * Linux Additions X11 graphics driver */ /* * Copyright (C) 2006-2010 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 */ #ifdef XORG_7X # include "xorg-server.h" # include #endif #include "vboxvideo.h" #include #include "version-generated.h" #include "product-generated.h" #include /* All drivers initialising the SW cursor need this */ #include "mipointer.h" /* All drivers implementing backing store need this */ #include "mibstore.h" /* Colormap handling */ #include "micmap.h" #include "xf86cmap.h" /* DPMS */ /* #define DPMS_SERVER #include "extensions/dpms.h" */ /* VGA hardware functions for setting and restoring text mode */ #include "vgaHW.h" #ifdef VBOXVIDEO_13 /* X.org 1.3+ mode setting */ # define _HAVE_STRING_ARCH_strsep /* bits/string2.h, __strsep_1c. */ # include "xf86Crtc.h" # include "xf86Modes.h" # include #endif /* Mandatory functions */ static const OptionInfoRec * VBOXAvailableOptions(int chipid, int busid); static void VBOXIdentify(int flags); #ifndef PCIACCESS static Bool VBOXProbe(DriverPtr drv, int flags); #else static Bool VBOXPciProbe(DriverPtr drv, int entity_num, struct pci_device *dev, intptr_t match_data); #endif static Bool VBOXPreInit(ScrnInfoPtr pScrn, int flags); static Bool VBOXScreenInit(int Index, ScreenPtr pScreen, int argc, char **argv); static Bool VBOXEnterVT(int scrnIndex, int flags); static void VBOXLeaveVT(int scrnIndex, int flags); static Bool VBOXCloseScreen(int scrnIndex, ScreenPtr pScreen); static Bool VBOXSaveScreen(ScreenPtr pScreen, int mode); static Bool VBOXSwitchMode(int scrnIndex, DisplayModePtr pMode, int flags); static Bool VBOXSetMode(ScrnInfoPtr pScrn, unsigned cDisplay, unsigned cWidth, unsigned cHeight, int x, int y); static void VBOXAdjustFrame(int scrnIndex, int x, int y, int flags); static void VBOXFreeScreen(int scrnIndex, int flags); static void VBOXFreeRec(ScrnInfoPtr pScrn); static void VBOXDisplayPowerManagementSet(ScrnInfoPtr pScrn, int mode, int flags); /* locally used functions */ static Bool VBOXMapVidMem(ScrnInfoPtr pScrn); static void VBOXUnmapVidMem(ScrnInfoPtr pScrn); static Bool VBOXSaveRestore(ScrnInfoPtr pScrn, vbeSaveRestoreFunction function); static Bool VBOXAdjustScreenPixmap(ScrnInfoPtr pScrn, int width, int height); enum GenericTypes { CHIP_VBOX_GENERIC }; #ifdef PCIACCESS static const struct pci_id_match vbox_device_match[] = { { VBOX_VENDORID, VBOX_DEVICEID, PCI_MATCH_ANY, PCI_MATCH_ANY, 0, 0, 0 }, { 0, 0, 0 }, }; #endif /* Supported chipsets */ static SymTabRec VBOXChipsets[] = { {VBOX_DEVICEID, "vbox"}, {-1, NULL} }; static PciChipsets VBOXPCIchipsets[] = { { VBOX_DEVICEID, VBOX_DEVICEID, RES_SHARED_VGA }, { -1, -1, RES_UNDEFINED }, }; /* * This contains the functions needed by the server after loading the * driver module. It must be supplied, and gets added the driver list by * the Module Setup function in the dynamic case. In the static case a * reference to this is compiled in, and this requires that the name of * this DriverRec be an upper-case version of the driver name. */ #ifdef XORG_7X _X_EXPORT #endif DriverRec VBOXVIDEO = { VBOX_VERSION, VBOX_DRIVER_NAME, VBOXIdentify, #ifdef PCIACCESS NULL, #else VBOXProbe, #endif VBOXAvailableOptions, NULL, 0, #ifdef XORG_7X NULL, #endif #ifdef PCIACCESS vbox_device_match, VBOXPciProbe #endif }; /* No options for now */ static const OptionInfoRec VBOXOptions[] = { { -1, NULL, OPTV_NONE, {0}, FALSE } }; #ifndef XORG_7X /* * List of symbols from other modules that this module references. This * list is used to tell the loader that it is OK for symbols here to be * unresolved providing that it hasn't been told that they haven't been * told that they are essential via a call to xf86LoaderReqSymbols() or * xf86LoaderReqSymLists(). The purpose is this is to avoid warnings about * unresolved symbols that are not required. */ static const char *fbSymbols[] = { "fbPictureInit", "fbScreenInit", NULL }; static const char *shadowfbSymbols[] = { "ShadowFBInit2", NULL }; static const char *vbeSymbols[] = { "VBEExtendedInit", "VBEFindSupportedDepths", "VBEGetModeInfo", "VBEGetVBEInfo", "VBEGetVBEMode", "VBEPrintModes", "VBESaveRestore", "VBESetDisplayStart", "VBESetGetDACPaletteFormat", "VBESetGetLogicalScanlineLength", "VBESetGetPaletteData", "VBESetModeNames", "VBESetModeParameters", "VBESetVBEMode", "VBEValidateModes", "vbeDoEDID", "vbeFree", NULL }; static const char *ramdacSymbols[] = { "xf86InitCursor", "xf86CreateCursorInfoRec", NULL }; static const char *vgahwSymbols[] = { "vgaHWGetHWRec", "vgaHWHandleColormaps", "vgaHWFreeHWRec", "vgaHWMapMem", "vgaHWUnmapMem", "vgaHWSaveFonts", "vgaHWRestoreFonts", "vgaHWGetIndex", "vgaHWSaveScreen", "vgaHWDPMSSet", NULL }; #endif /* !XORG_7X */ static VBOXPtr VBOXGetRec(ScrnInfoPtr pScrn) { if (!pScrn->driverPrivate) { pScrn->driverPrivate = calloc(sizeof(VBOXRec), 1); } return ((VBOXPtr)pScrn->driverPrivate); } static void VBOXFreeRec(ScrnInfoPtr pScrn) { VBOXPtr pVBox = VBOXGetRec(pScrn); free(pVBox->savedPal); free(pVBox->fonts); free(pScrn->driverPrivate); pScrn->driverPrivate = NULL; } #ifdef VBOXVIDEO_13 /* X.org 1.3+ mode-setting support ******************************************/ /* For descriptions of these functions and structures, see hw/xfree86/modes/xf86Crtc.h and hw/xfree86/modes/xf86Modes.h in the X.Org source tree. */ static const xf86CrtcConfigFuncsRec VBOXCrtcConfigFuncs = { VBOXAdjustScreenPixmap }; static void vbox_crtc_dpms(xf86CrtcPtr crtc, int mode) { (void) crtc; (void) mode; } static Bool vbox_crtc_lock (xf86CrtcPtr crtc) { (void) crtc; return FALSE; } static Bool vbox_crtc_mode_fixup (xf86CrtcPtr crtc, DisplayModePtr mode, DisplayModePtr adjusted_mode) { (void) crtc; (void) mode; (void) adjusted_mode; return TRUE; } static void vbox_crtc_stub (xf86CrtcPtr crtc) { (void) crtc; } static void vbox_crtc_mode_set (xf86CrtcPtr crtc, DisplayModePtr mode, DisplayModePtr adjusted_mode, int x, int y) { (void) mode; VBOXPtr pVBox = VBOXGetRec(crtc->scrn); TRACE_LOG("name=%s, HDisplay=%d, VDisplay=%d, x=%d, y=%d\n", adjusted_mode->name, adjusted_mode->HDisplay, adjusted_mode->VDisplay, x, y); VBOXSetMode(crtc->scrn, (uintptr_t)crtc->driver_private, adjusted_mode->HDisplay, adjusted_mode->VDisplay, x, y); /* Don't remember any modes set while we are seamless, as they are * just temporary. */ if (!vboxGuestIsSeamless(crtc->scrn)) vboxSaveVideoMode(crtc->scrn, adjusted_mode->HDisplay, adjusted_mode->VDisplay, crtc->scrn->bitsPerPixel); } static void vbox_crtc_gamma_set (xf86CrtcPtr crtc, CARD16 *red, CARD16 *green, CARD16 *blue, int size) { (void) crtc; (void) red; (void) green; (void) blue; (void) size; } static void * vbox_crtc_shadow_allocate (xf86CrtcPtr crtc, int width, int height) { (void) crtc; (void) width; (void) height; return NULL; } static const xf86CrtcFuncsRec VBOXCrtcFuncs = { .dpms = vbox_crtc_dpms, .save = NULL, /* These two are never called by the server. */ .restore = NULL, .lock = vbox_crtc_lock, .unlock = NULL, /* This will not be invoked if lock returns FALSE. */ .mode_fixup = vbox_crtc_mode_fixup, .prepare = vbox_crtc_stub, .mode_set = vbox_crtc_mode_set, .commit = vbox_crtc_stub, .gamma_set = vbox_crtc_gamma_set, .shadow_allocate = vbox_crtc_shadow_allocate, .shadow_create = NULL, /* These two should not be invoked if allocate returns NULL. */ .shadow_destroy = NULL, .set_cursor_colors = NULL, /* We are still using the old cursor API. */ .set_cursor_position = NULL, .show_cursor = NULL, .hide_cursor = NULL, .load_cursor_argb = NULL, .destroy = vbox_crtc_stub }; static void vbox_output_stub (xf86OutputPtr output) { (void) output; } static void vbox_output_dpms (xf86OutputPtr output, int mode) { (void) output; (void) mode; } static int vbox_output_mode_valid (xf86OutputPtr output, DisplayModePtr mode) { ScrnInfoPtr pScrn = output->scrn; int rc = MODE_OK; TRACE_LOG("HDisplay=%d, VDisplay=%d\n", mode->HDisplay, mode->VDisplay); /* We always like modes specified by the user in the configuration * file and modes requested by the host, as doing otherwise is likely to * annoy people. */ if ( !(mode->type & M_T_USERDEF) && !(mode->type & M_T_PREFERRED) && vbox_device_available(VBOXGetRec(pScrn)) && !vboxHostLikesVideoMode(pScrn, mode->HDisplay, mode->VDisplay, pScrn->bitsPerPixel) ) rc = MODE_BAD; TRACE_LOG("returning %s\n", MODE_OK == rc ? "MODE_OK" : "MODE_BAD"); return rc; } static Bool vbox_output_mode_fixup (xf86OutputPtr output, DisplayModePtr mode, DisplayModePtr adjusted_mode) { (void) output; (void) mode; (void) adjusted_mode; return TRUE; } static void vbox_output_mode_set (xf86OutputPtr output, DisplayModePtr mode, DisplayModePtr adjusted_mode) { (void) output; (void) mode; (void) adjusted_mode; } /* A virtual monitor is always connected. */ static xf86OutputStatus vbox_output_detect (xf86OutputPtr output) { (void) output; return XF86OutputStatusConnected; } static void vbox_output_add_mode (VBOXPtr pVBox, DisplayModePtr *pModes, const char *pszName, int x, int y, Bool isPreferred, Bool isUserDef) { TRACE_LOG("pszName=%s, x=%d, y=%d\n", pszName, x, y); DisplayModePtr pMode = xnfcalloc(1, sizeof(DisplayModeRec)); pMode->status = MODE_OK; /* We don't ask the host whether it likes user defined modes, * as we assume that the user really wanted that mode. */ pMode->type = isUserDef ? M_T_USERDEF : M_T_BUILTIN; if (isPreferred) pMode->type |= M_T_PREFERRED; /* Older versions of VBox only support screen widths which are a multiple * of 8 */ if (pVBox->fAnyX) pMode->HDisplay = x; else pMode->HDisplay = x & ~7; pMode->HSyncStart = pMode->HDisplay + 2; pMode->HSyncEnd = pMode->HDisplay + 4; pMode->HTotal = pMode->HDisplay + 6; pMode->VDisplay = y; pMode->VSyncStart = pMode->VDisplay + 2; pMode->VSyncEnd = pMode->VDisplay + 4; pMode->VTotal = pMode->VDisplay + 6; pMode->Clock = pMode->HTotal * pMode->VTotal * 60 / 1000; /* kHz */ if (NULL == pszName) { xf86SetModeDefaultName(pMode); } else { pMode->name = xnfstrdup(pszName); } *pModes = xf86ModesAdd(*pModes, pMode); } static DisplayModePtr vbox_output_get_modes (xf86OutputPtr output) { unsigned i; DisplayModePtr pModes = NULL; ScrnInfoPtr pScrn = output->scrn; VBOXPtr pVBox = VBOXGetRec(pScrn); TRACE_ENTRY(); if (vbox_device_available(pVBox)) { Bool rc = FALSE; uint32_t x, y, bpp, iScreen; iScreen = (uintptr_t)output->driver_private; if ( pVBox->aPreferredSize[iScreen].cx && pVBox->aPreferredSize[iScreen].cy) { x = pVBox->aPreferredSize[iScreen].cx; y = pVBox->aPreferredSize[iScreen].cy; rc = TRUE; } else rc = vboxGetDisplayChangeRequest(pScrn, &x, &y, &bpp, &iScreen); /* If we don't find a display request, see if we have a saved hint * from a previous session. */ if (!rc || (0 == x) || (0 == y)) rc = vboxRetrieveVideoMode(pScrn, &x, &y, &bpp); if (rc && (0 != x) && (0 != y)) vbox_output_add_mode(pVBox, &pModes, NULL, x, y, TRUE, FALSE); } /* Also report any modes the user may have requested in the xorg.conf * configuration file. */ for (i = 0; pScrn->display->modes[i] != NULL; i++) { int x, y; if (2 == sscanf(pScrn->display->modes[i], "%dx%d", &x, &y)) vbox_output_add_mode(pVBox, &pModes, pScrn->display->modes[i], x, y, FALSE, TRUE); } TRACE_EXIT(); return pModes; } #ifdef RANDR_12_INTERFACE static Atom vboxAtomVBoxMode(void) { static Atom rc = 0; if (!rc) rc = MakeAtom("VBOX_MODE", sizeof("VBOX_MODE") - 1, TRUE); return rc; } /** We use this for receiving information from clients for the purpose of * dynamic resizing, and later possibly other things too. */ static Bool vbox_output_set_property(xf86OutputPtr output, Atom property, RRPropertyValuePtr value) { ScrnInfoPtr pScrn = output->scrn; VBOXPtr pVBox = VBOXGetRec(pScrn); TRACE_LOG("property=%d, value->type=%d, value->format=%d, value->size=%ld\n", (int)property, (int)value->type, value->format, value->size); if (property == vboxAtomVBoxMode()) { uint32_t cDisplay = (uintptr_t)output->driver_private; char sz[256] = { 0 }; int w, h; if ( value->type != XA_STRING || (unsigned) value->size > (sizeof(sz) - 1)) return FALSE; strncpy(sz, value->data, value->size); if (sscanf(sz, "%dx%d", &w, &h) != 2) return FALSE; pVBox->aPreferredSize[cDisplay].cx = w; pVBox->aPreferredSize[cDisplay].cy = h; return TRUE; } return FALSE; } #endif static const xf86OutputFuncsRec VBOXOutputFuncs = { .create_resources = vbox_output_stub, .dpms = vbox_output_dpms, .save = NULL, /* These two are never called by the server. */ .restore = NULL, .mode_valid = vbox_output_mode_valid, .mode_fixup = vbox_output_mode_fixup, .prepare = vbox_output_stub, .commit = vbox_output_stub, .mode_set = vbox_output_mode_set, .detect = vbox_output_detect, .get_modes = vbox_output_get_modes, #ifdef RANDR_12_INTERFACE .set_property = vbox_output_set_property, #endif .destroy = vbox_output_stub }; #endif /* VBOXVIDEO_13 */ #ifdef XFree86LOADER /* Module loader interface */ static MODULESETUPPROTO(vboxSetup); static XF86ModuleVersionInfo vboxVersionRec = { VBOX_DRIVER_NAME, VBOX_VENDOR, MODINFOSTRING1, MODINFOSTRING2, #ifdef XORG_7X XORG_VERSION_CURRENT, #else XF86_VERSION_CURRENT, #endif 1, /* Module major version. Xorg-specific */ 0, /* Module minor version. Xorg-specific */ 1, /* Module patchlevel. Xorg-specific */ ABI_CLASS_VIDEODRV, /* This is a video driver */ ABI_VIDEODRV_VERSION, MOD_CLASS_VIDEODRV, {0, 0, 0, 0} }; /* * This data is accessed by the loader. The name must be the module name * followed by "ModuleData". */ #ifdef XORG_7X _X_EXPORT #endif XF86ModuleData vboxvideoModuleData = { &vboxVersionRec, vboxSetup, NULL }; static pointer vboxSetup(pointer Module, pointer Options, int *ErrorMajor, int *ErrorMinor) { static Bool Initialised = FALSE; if (!Initialised) { Initialised = TRUE; #ifdef PCIACCESS xf86AddDriver(&VBOXVIDEO, Module, HaveDriverFuncs); #else xf86AddDriver(&VBOXVIDEO, Module, 0); #endif #ifndef XORG_7X LoaderRefSymLists(fbSymbols, shadowfbSymbols, vbeSymbols, ramdacSymbols, vgahwSymbols, NULL); #endif xf86Msg(X_CONFIG, "Load address of symbol \"VBOXVIDEO\" is %p\n", (void *)&VBOXVIDEO); return (pointer)TRUE; } if (ErrorMajor) *ErrorMajor = LDR_ONCEONLY; return (NULL); } #endif /* XFree86Loader defined */ static const OptionInfoRec * VBOXAvailableOptions(int chipid, int busid) { return (VBOXOptions); } static void VBOXIdentify(int flags) { xf86PrintChipsets(VBOX_NAME, "guest driver for VirtualBox", VBOXChipsets); } /* * This function is called once, at the start of the first server generation to * do a minimal probe for supported hardware. */ #ifdef PCIACCESS static Bool VBOXPciProbe(DriverPtr drv, int entity_num, struct pci_device *dev, intptr_t match_data) { ScrnInfoPtr pScrn; TRACE_ENTRY(); pScrn = xf86ConfigPciEntity(NULL, 0, entity_num, VBOXPCIchipsets, NULL, NULL, NULL, NULL, NULL); if (pScrn != NULL) { VBOXPtr pVBox = VBOXGetRec(pScrn); pScrn->driverVersion = VBOX_VERSION; pScrn->driverName = VBOX_DRIVER_NAME; pScrn->name = VBOX_NAME; pScrn->Probe = NULL; pScrn->PreInit = VBOXPreInit; pScrn->ScreenInit = VBOXScreenInit; pScrn->SwitchMode = VBOXSwitchMode; pScrn->AdjustFrame = VBOXAdjustFrame; pScrn->EnterVT = VBOXEnterVT; pScrn->LeaveVT = VBOXLeaveVT; pScrn->FreeScreen = VBOXFreeScreen; pVBox->pciInfo = dev; } TRACE_LOG("returning %s\n", BOOL_STR(pScrn != NULL)); return (pScrn != NULL); } #endif #ifndef PCIACCESS static Bool VBOXProbe(DriverPtr drv, int flags) { Bool foundScreen = FALSE; int numDevSections; GDevPtr *devSections; /* * Find the config file Device sections that match this * driver, and return if there are none. */ if ((numDevSections = xf86MatchDevice(VBOX_NAME, &devSections)) <= 0) return (FALSE); /* PCI BUS */ if (xf86GetPciVideoInfo()) { int numUsed; int *usedChips; int i; numUsed = xf86MatchPciInstances(VBOX_NAME, VBOX_VENDORID, VBOXChipsets, VBOXPCIchipsets, devSections, numDevSections, drv, &usedChips); if (numUsed > 0) { if (flags & PROBE_DETECT) foundScreen = TRUE; else { for (i = 0; i < numUsed; i++) { ScrnInfoPtr pScrn = NULL; /* Allocate a ScrnInfoRec */ if ((pScrn = xf86ConfigPciEntity(pScrn,0,usedChips[i], VBOXPCIchipsets,NULL, NULL,NULL,NULL,NULL))) { pScrn->driverVersion = VBOX_VERSION; pScrn->driverName = VBOX_DRIVER_NAME; pScrn->name = VBOX_NAME; pScrn->Probe = VBOXProbe; pScrn->PreInit = VBOXPreInit; pScrn->ScreenInit = VBOXScreenInit; pScrn->SwitchMode = VBOXSwitchMode; pScrn->AdjustFrame = VBOXAdjustFrame; pScrn->EnterVT = VBOXEnterVT; pScrn->LeaveVT = VBOXLeaveVT; pScrn->FreeScreen = VBOXFreeScreen; foundScreen = TRUE; } } } free(usedChips); } } free(devSections); return (foundScreen); } #endif /** * This function hooks into the chain that is called when framebuffer access * is allowed or disallowed by a call to EnableDisableFBAccess in the server. * In other words, it observes when the server wishes access to the * framebuffer to be enabled and when it should be disabled. We need to know * this because we disable access ourselves during mode switches (presumably * the server should do this but it doesn't) and want to know whether to * restore it or not afterwards. */ static void vboxEnableDisableFBAccess(int scrnIndex, Bool enable) { ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; VBOXPtr pVBox = VBOXGetRec(pScrn); TRACE_LOG("enable=%s\n", enable ? "TRUE" : "FALSE"); pVBox->accessEnabled = enable; pVBox->EnableDisableFBAccess(scrnIndex, enable); TRACE_EXIT(); } /** Calculate the BPP from the screen depth */ static uint16_t vboxBPP(ScrnInfoPtr pScrn) { return pScrn->depth == 24 ? 32 : 16; } /** Calculate the scan line length for a display width */ static int32_t vboxLineLength(ScrnInfoPtr pScrn, int32_t cDisplayWidth) { uint64_t cbLine = ((uint64_t)cDisplayWidth * vboxBPP(pScrn) / 8 + 3) & ~3; return cbLine < INT32_MAX ? cbLine : INT32_MAX; } /** Calculate the display pitch from the scan line length */ static int32_t vboxDisplayPitch(ScrnInfoPtr pScrn, int32_t cbLine) { return ASMDivU64ByU32RetU32((uint64_t)cbLine * 8, vboxBPP(pScrn)); } /* * QUOTE from the XFree86 DESIGN document: * * The purpose of this function is to find out all the information * required to determine if the configuration is usable, and to initialise * those parts of the ScrnInfoRec that can be set once at the beginning of * the first server generation. * * (...) * * This includes probing for video memory, clocks, ramdac, and all other * HW info that is needed. It includes determining the depth/bpp/visual * and related info. It includes validating and determining the set of * video modes that will be used (and anything that is required to * determine that). * * This information should be determined in the least intrusive way * possible. The state of the HW must remain unchanged by this function. * Although video memory (including MMIO) may be mapped within this * function, it must be unmapped before returning. * * END QUOTE */ static Bool VBOXPreInit(ScrnInfoPtr pScrn, int flags) { VBOXPtr pVBox; Gamma gzeros = {0.0, 0.0, 0.0}; rgb rzeros = {0, 0, 0}; unsigned DispiId; TRACE_ENTRY(); /* Are we really starting the server, or is this just a dummy run? */ if (flags & PROBE_DETECT) return (FALSE); xf86DrvMsg(pScrn->scrnIndex, X_INFO, "VirtualBox guest additions video driver version " VBOX_VERSION_STRING "\n"); /* Get our private data from the ScrnInfoRec structure. */ pVBox = VBOXGetRec(pScrn); /* Initialise the guest library */ vbox_init(pScrn->scrnIndex, pVBox); /* Entity information seems to mean bus information. */ pVBox->pEnt = xf86GetEntityInfo(pScrn->entityList[0]); /* The ramdac module is needed for the hardware cursor. */ if (!xf86LoadSubModule(pScrn, "ramdac")) return FALSE; /* We need the vbe module because we use VBE code to save and restore text mode, in order to keep our code simple. */ if (!xf86LoadSubModule(pScrn, "vbe")) return (FALSE); /* The framebuffer module. */ if (xf86LoadSubModule(pScrn, "fb") == NULL) return (FALSE); if (!xf86LoadSubModule(pScrn, "shadowfb")) return FALSE; if (!xf86LoadSubModule(pScrn, "vgahw")) return FALSE; #ifdef VBOX_DRI /* Load the dri module. */ if (!xf86LoadSubModule(pScrn, "dri")) return FALSE; #endif #ifndef PCIACCESS if (pVBox->pEnt->location.type != BUS_PCI) return FALSE; pVBox->pciInfo = xf86GetPciInfoForEntity(pVBox->pEnt->index); pVBox->pciTag = pciTag(pVBox->pciInfo->bus, pVBox->pciInfo->device, pVBox->pciInfo->func); #endif /* Set up our ScrnInfoRec structure to describe our virtual capabilities to X. */ pScrn->chipset = "vbox"; pScrn->rgbBits = 8; /* Let's create a nice, capable virtual monitor. * This *is* still needed, at least for server version 1.3 */ pScrn->monitor = pScrn->confScreen->monitor; pScrn->monitor->DDC = NULL; pScrn->monitor->nHsync = 1; pScrn->monitor->hsync[0].lo = 1; pScrn->monitor->hsync[0].hi = 10000; pScrn->monitor->nVrefresh = 1; pScrn->monitor->vrefresh[0].lo = 1; pScrn->monitor->vrefresh[0].hi = 100; pScrn->progClock = TRUE; /* Using the PCI information caused problems with non-powers-of-two sized video RAM configurations */ pVBox->cbFramebuffer = inl(VBE_DISPI_IOPORT_DATA); pScrn->videoRam = pVBox->cbFramebuffer / 1024; /* Check if the chip restricts horizontal resolution or not. */ outw(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ID); outw(VBE_DISPI_IOPORT_DATA, VBE_DISPI_ID_ANYX); DispiId = inw(VBE_DISPI_IOPORT_DATA); if (DispiId == VBE_DISPI_ID_ANYX) pVBox->fAnyX = TRUE; else pVBox->fAnyX = FALSE; /* Set up clock information that will support all modes we need. */ pScrn->clockRanges = xnfcalloc(sizeof(ClockRange), 1); pScrn->clockRanges->minClock = 1000; pScrn->clockRanges->maxClock = 1000000000; pScrn->clockRanges->clockIndex = -1; pScrn->clockRanges->ClockMulFactor = 1; pScrn->clockRanges->ClockDivFactor = 1; /* Query the host for the preferred colour depth */ { uint32_t cx = 0, cy = 0, cBits = 0; vboxGetPreferredMode(pScrn, &cx, &cy, &cBits); /* We only support 16 and 24 bits depth (i.e. 16 and 32bpp) */ if (cBits != 16) cBits = 24; if (!xf86SetDepthBpp(pScrn, cBits, 0, 0, Support32bppFb)) return FALSE; vboxAddModes(pScrn, cx, cy); } if (pScrn->bitsPerPixel != 32 && pScrn->bitsPerPixel != 16) { xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "The VBox additions only support 16 and 32bpp graphics modes\n"); return FALSE; } xf86PrintDepthBpp(pScrn); #ifdef VBOXVIDEO_13 /* Work around a bug in the original X server modesetting code, which * took the first valid values set to these two as maxima over the * server lifetime. */ pScrn->virtualX = 32000; pScrn->virtualY = 32000; #else /* We don't validate with xf86ValidateModes and xf86PruneModes as we * already know what we like and what we don't. */ pScrn->currentMode = pScrn->modes; /* Set the right virtual resolution. */ pScrn->virtualX = pScrn->currentMode->HDisplay; pScrn->virtualY = pScrn->currentMode->VDisplay; #endif /* !VBOXVIDEO_13 */ /* Needed before we initialise DRI. */ pVBox->cbLine = vboxLineLength(pScrn, pScrn->virtualX); pScrn->displayWidth = vboxDisplayPitch(pScrn, pVBox->cbLine); xf86PrintModes(pScrn); /* Colour weight - we always call this, since we are always in truecolour. */ if (!xf86SetWeight(pScrn, rzeros, rzeros)) return (FALSE); /* visual init */ if (!xf86SetDefaultVisual(pScrn, -1)) return (FALSE); xf86SetGamma(pScrn, gzeros); /* Set the DPI. Perhaps we should read this from the host? */ xf86SetDpi(pScrn, 96, 96); /* Framebuffer-related setup */ pScrn->bitmapBitOrder = BITMAP_BIT_ORDER; /* VGA hardware initialisation */ if (!vgaHWGetHWRec(pScrn)) return FALSE; TRACE_EXIT(); return (TRUE); } /** * Dummy function for setting the colour palette, which we actually never * touch. However, the server still requires us to provide this. */ static void vboxLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices, LOCO *colors, VisualPtr pVisual) { (void)pScrn; (void) numColors; (void) indices; (void) colors; (void)pVisual; } /* * QUOTE from the XFree86 DESIGN document: * * This is called at the start of each server generation. * * (...) * * Decide which operations need to be placed under resource access * control. (...) Map any video memory or other memory regions. (...) * Save the video card state. (...) Initialise the initial video * mode. * * End QUOTE. */ static Bool VBOXScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv) { ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; VBOXPtr pVBox = VBOXGetRec(pScrn); VisualPtr visual; unsigned flags; TRACE_ENTRY(); /* We make use of the X11 VBE code to save and restore text mode, in order to keep our code simple. */ if ((pVBox->pVbe = VBEExtendedInit(NULL, pVBox->pEnt->index, SET_BIOS_SCRATCH | RESTORE_BIOS_SCRATCH)) == NULL) return (FALSE); if (pScrn->memPhysBase == 0) { #ifdef PCIACCESS pScrn->memPhysBase = pVBox->pciInfo->regions[0].base_addr; #else pScrn->memPhysBase = pVBox->pciInfo->memBase[0]; #endif pScrn->fbOffset = 0; } if (!VBOXMapVidMem(pScrn)) return (FALSE); /* save current video state */ VBOXSaveRestore(pScrn, MODE_SAVE); /* mi layer - reset the visual list (?)*/ miClearVisualTypes(); if (!xf86SetDefaultVisual(pScrn, -1)) return (FALSE); if (!miSetVisualTypes(pScrn->depth, TrueColorMask, pScrn->rgbBits, TrueColor)) return (FALSE); if (!miSetPixmapDepths()) return (FALSE); #ifdef VBOX_DRI pVBox->useDRI = VBOXDRIScreenInit(scrnIndex, pScreen, pVBox); #endif /* I checked in the sources, and XFree86 4.2 does seem to support this function for 32bpp. */ if (!fbScreenInit(pScreen, pVBox->base, pScrn->virtualX, pScrn->virtualY, pScrn->xDpi, pScrn->yDpi, pScrn->displayWidth, pScrn->bitsPerPixel)) return (FALSE); /* Fixup RGB ordering */ visual = pScreen->visuals + pScreen->numVisuals; while (--visual >= pScreen->visuals) { if ((visual->class | DynamicClass) == DirectColor) { visual->offsetRed = pScrn->offset.red; visual->offsetGreen = pScrn->offset.green; visual->offsetBlue = pScrn->offset.blue; visual->redMask = pScrn->mask.red; visual->greenMask = pScrn->mask.green; visual->blueMask = pScrn->mask.blue; } } /* must be after RGB ordering fixed */ fbPictureInit(pScreen, 0, 0); xf86SetBlackWhitePixels(pScreen); miInitializeBackingStore(pScreen); xf86SetBackingStore(pScreen); /* We need to keep track of whether we are currently switched to a virtual * terminal to know whether a mode set operation is currently safe to do. */ pVBox->vtSwitch = FALSE; if (vbox_device_available(pVBox) && vbox_open (pScrn, pScreen, pVBox)) { vboxEnableVbva(pScrn); vboxEnableGraphicsCap(pVBox); } #ifdef VBOXVIDEO_13 /* Initialise CRTC and output configuration for use with randr1.2. */ xf86CrtcConfigInit(pScrn, &VBOXCrtcConfigFuncs); { uint32_t i; for (i = 0; i < pVBox->cScreens; ++i) { char szOutput[256]; /* Setup our virtual CRTCs. */ pVBox->paCrtcs[i] = xf86CrtcCreate(pScrn, &VBOXCrtcFuncs); pVBox->paCrtcs[i]->driver_private = (void *)(uintptr_t)i; /* Set up our virtual outputs. */ snprintf(szOutput, sizeof(szOutput), "VBOX%u", i); pVBox->paOutputs[i] = xf86OutputCreate(pScrn, &VBOXOutputFuncs, szOutput); /* We are not interested in the monitor section in the * configuration file. */ xf86OutputUseScreenMonitor(pVBox->paOutputs[i], FALSE); pVBox->paOutputs[i]->possible_crtcs = 1 << i; pVBox->paOutputs[i]->possible_clones = 0; pVBox->paOutputs[i]->driver_private = (void *)(uintptr_t)i; TRACE_LOG("Created crtc (%p) and output %s (%p)\n", (void *)pVBox->paCrtcs[i], szOutput, (void *)pVBox->paOutputs[i]); } } /* Set a sane minimum and maximum mode size */ xf86CrtcSetSizeRange(pScrn, 64, 64, 32000, 32000); /* Now create our initial CRTC/output configuration. */ if (!xf86InitialConfiguration(pScrn, TRUE)) { xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Initial CRTC configuration failed!\n"); return (FALSE); } /* Initialise randr 1.2 mode-setting functions and set first mode. * Note that the mode won't be usable until the server has resized the * framebuffer to something reasonable. */ if (!xf86CrtcScreenInit(pScreen)) { return FALSE; } /* Create our VBOX_MODE display properties. */ { uint32_t i; for (i = 0; i < pVBox->cScreens; ++i) { char csz[] = "0x0"; RRChangeOutputProperty(pVBox->paOutputs[i]->randr_output, vboxAtomVBoxMode(), XA_STRING, 8, PropModeReplace, sizeof(csz), csz, TRUE, FALSE); } } if (!xf86SetDesiredModes(pScrn)) { return FALSE; } #else /* !VBOXVIDEO_13 */ /* set first video mode */ if (!VBOXSetMode(pScrn, 0, pScrn->currentMode->HDisplay, pScrn->currentMode->VDisplay, pScrn->frameX0, pScrn->frameY0)) return FALSE; /* And make sure that a non-current dynamic mode is at the front of the * list */ vboxWriteHostModes(pScrn, pScrn->currentMode); #endif /* !VBOXVIDEO_13 */ /* software cursor */ miDCInitialize(pScreen, xf86GetPointerScreenFuncs()); /* colourmap code */ if (!miCreateDefColormap(pScreen)) return (FALSE); if(!xf86HandleColormaps(pScreen, 256, 8, vboxLoadPalette, NULL, 0)) return (FALSE); /* Hook our observer function ito the chain which is called when * framebuffer access is enabled or disabled in the server, and * assume an initial state of enabled. */ pVBox->accessEnabled = TRUE; pVBox->EnableDisableFBAccess = pScrn->EnableDisableFBAccess; pScrn->EnableDisableFBAccess = vboxEnableDisableFBAccess; pVBox->CloseScreen = pScreen->CloseScreen; pScreen->CloseScreen = VBOXCloseScreen; pScreen->SaveScreen = VBOXSaveScreen; /* We probably do want to support power management - even if we just use a dummy function. */ xf86DPMSInit(pScreen, VBOXDisplayPowerManagementSet, 0); /* Report any unused options (only for the first generation) */ if (serverGeneration == 1) xf86ShowUnusedOptions(pScrn->scrnIndex, pScrn->options); if (vbox_cursor_init(pScreen) != TRUE) xf86DrvMsg(scrnIndex, X_ERROR, "Unable to start the VirtualBox mouse pointer integration with the host system.\n"); #ifdef VBOX_DRI if (pVBox->useDRI) pVBox->useDRI = VBOXDRIFinishScreenInit(pScreen); #endif return (TRUE); } static Bool VBOXEnterVT(int scrnIndex, int flags) { ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; VBOXPtr pVBox = VBOXGetRec(pScrn); TRACE_ENTRY(); pVBox->vtSwitch = FALSE; #ifdef VBOX_DRI if (pVBox->useDRI) DRIUnlock(screenInfo.screens[scrnIndex]); #endif #ifdef VBOXVIDEO_13 if (!xf86SetDesiredModes(pScrn)) return FALSE; #else if (!VBOXSetMode(pScrn, 0, pScrn->currentMode->HDisplay, pScrn->currentMode->VDisplay, pScrn->frameX0, pScrn->frameY0)) return FALSE; #endif if (pVBox->fHaveHGSMI) vboxEnableVbva(pScrn); return TRUE; } static void VBOXLeaveVT(int scrnIndex, int flags) { ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; VBOXPtr pVBox = VBOXGetRec(pScrn); TRACE_ENTRY(); pVBox->vtSwitch = TRUE; VBOXSaveRestore(pScrn, MODE_RESTORE); if (pVBox->fHaveHGSMI) vboxDisableVbva(pScrn); vboxDisableGraphicsCap(pVBox); #ifdef VBOX_DRI if (pVBox->useDRI) DRILock(screenInfo.screens[scrnIndex], 0); #endif TRACE_EXIT(); } static Bool VBOXCloseScreen(int scrnIndex, ScreenPtr pScreen) { ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; VBOXPtr pVBox = VBOXGetRec(pScrn); #ifdef VBOX_DRI if (pVBox->useDRI) VBOXDRICloseScreen(pScreen, pVBox); pVBox->useDRI = false; #endif if (pVBox->fHaveHGSMI) vboxDisableVbva(pScrn); vboxDisableGraphicsCap(pVBox); if (pScrn->vtSema) { VBOXSaveRestore(xf86Screens[scrnIndex], MODE_RESTORE); VBOXUnmapVidMem(pScrn); } pScrn->vtSema = FALSE; /* Destroy the VGA hardware record */ vgaHWFreeHWRec(pScrn); /* And do additional bits which are separate for historical reasons */ vbox_close(pScrn, pVBox); /* Remove our observer functions from the X server call chains. */ pScrn->EnableDisableFBAccess = pVBox->EnableDisableFBAccess; pScreen->CloseScreen = pVBox->CloseScreen; return pScreen->CloseScreen(scrnIndex, pScreen); } static Bool VBOXSwitchMode(int scrnIndex, DisplayModePtr pMode, int flags) { ScrnInfoPtr pScrn; VBOXPtr pVBox; Bool rc; TRACE_LOG("HDisplay=%d, VDisplay=%d\n", pMode->HDisplay, pMode->VDisplay); pScrn = xf86Screens[scrnIndex]; /* Why does X have three ways of referring to the screen? */ pVBox = VBOXGetRec(pScrn); /* We want to disable access to the framebuffer before switching mode. * After doing the switch, we allow access if it was allowed before. */ if (pVBox->accessEnabled) pVBox->EnableDisableFBAccess(scrnIndex, FALSE); #ifdef VBOXVIDEO_13 rc = xf86SetSingleMode(pScrn, pMode, 0); #else VBOXAdjustScreenPixmap(pScrn, pMode->HDisplay, pMode->VDisplay); rc = VBOXSetMode(pScrn, 0, pMode->HDisplay, pMode->VDisplay, pScrn->frameX0, pScrn->frameY0); if (rc) { vboxWriteHostModes(pScrn, pMode); xf86PrintModes(pScrn); } if (rc && !vboxGuestIsSeamless(pScrn)) vboxSaveVideoMode(pScrn, pMode->HDisplay, pMode->VDisplay, pScrn->bitsPerPixel); #endif if (pVBox->accessEnabled) pVBox->EnableDisableFBAccess(scrnIndex, TRUE); TRACE_LOG("returning %s\n", rc ? "TRUE" : "FALSE"); return rc; } /** 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. */ static Bool VBOXSetMode(ScrnInfoPtr pScrn, unsigned cDisplay, unsigned cWidth, unsigned cHeight, int x, int y) { VBOXPtr pVBox = VBOXGetRec(pScrn); Bool rc = TRUE, fActive = TRUE; uint32_t offStart, cwReal; TRACE_LOG("cDisplay=%u, cWidth=%u, cHeight=%u, x=%d, y=%d, displayWidth=%d\n", cDisplay, cWidth, cHeight, x, y, pScrn->displayWidth); pVBox->aScreenLocation[cDisplay].cx = cWidth; pVBox->aScreenLocation[cDisplay].cy = cHeight; pVBox->aScreenLocation[cDisplay].x = x; pVBox->aScreenLocation[cDisplay].y = y; 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->cbFramebuffer) fActive = 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) fActive = FALSE; else cwReal = RT_MIN((int) cWidth, pScrn->displayWidth - x); /* Don't fiddle with the hardware if we are switched * to a virtual terminal. */ if (!pVBox->vtSwitch && fActive) { if (cDisplay == 0) VBoxVideoSetModeRegisters(cwReal, cHeight, pScrn->displayWidth, vboxBPP(pScrn), x, y); /* Tell the host we support graphics */ if (vbox_device_available(pVBox)) vboxEnableGraphicsCap(pVBox); } if ( vbox_device_available(pVBox) && (pVBox->fHaveHGSMI) && !pVBox->vtSwitch) VBoxHGSMIProcessDisplayInfo(&pVBox->guestCtx, cDisplay, x, y, offStart, pVBox->cbLine, cwReal, cHeight, vboxBPP(pScrn), VBVA_SCREEN_F_ACTIVE | (fActive ? 0: VBVA_SCREEN_F_DISABLED)); TRACE_LOG("returning %s\n", rc ? "TRUE" : "FALSE"); return rc; } /** Resize the virtual framebuffer. After resizing we reset all modes * (X.Org 1.3+) to adjust them to the new framebuffer. */ static 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); TRACE_LOG("width=%d, height=%d\n", width, height); if (!pPixmap) { xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Failed to get the screen pixmap.\n"); return FALSE; } if (cbLine > UINT32_MAX || cbLine * height >= pVBox->cbFramebuffer) { 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->cbFramebuffer / 1024, pScrn->videoRam); return FALSE; } pScreen->ModifyPixmapHeader(pPixmap, width, height, pScrn->depth, vboxBPP(pScrn), cbLine, pVBox->base); pScrn->virtualX = width; pScrn->virtualY = height; pScrn->displayWidth = vboxDisplayPitch(pScrn, cbLine); pVBox->cbLine = cbLine; #ifdef VBOX_DRI 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 return TRUE; } static void VBOXAdjustFrame(int scrnIndex, int x, int y, int flags) { VBOXPtr pVBox = VBOXGetRec(xf86Screens[scrnIndex]); ScrnInfoPtr pScrn = xf86Screens[scrnIndex]; TRACE_ENTRY(); /* Don't fiddle with the hardware if we are switched * to a virtual terminal. */ VBOXSetMode(pScrn, 0, pVBox->aScreenLocation[0].cx, pVBox->aScreenLocation[0].cy, x, y); TRACE_EXIT(); } static void VBOXFreeScreen(int scrnIndex, int flags) { VBOXFreeRec(xf86Screens[scrnIndex]); } static Bool VBOXMapVidMem(ScrnInfoPtr pScrn) { VBOXPtr pVBox = VBOXGetRec(pScrn); Bool rc = TRUE; TRACE_ENTRY(); if (!pVBox->base) { #ifdef PCIACCESS (void) pci_device_map_range(pVBox->pciInfo, pScrn->memPhysBase, pScrn->videoRam * 1024, PCI_DEV_MAP_FLAG_WRITABLE, & pVBox->base); #else pVBox->base = xf86MapPciMem(pScrn->scrnIndex, VIDMEM_FRAMEBUFFER, pVBox->pciTag, pScrn->memPhysBase, (unsigned) pScrn->videoRam * 1024); #endif if (pVBox->base) { /* We need this for saving/restoring textmode */ VGAHWPTR(pScrn)->IOBase = pScrn->domainIOBase; rc = vgaHWMapMem(pScrn); } else rc = FALSE; } TRACE_LOG("returning %s\n", rc ? "TRUE" : "FALSE"); return rc; } static void VBOXUnmapVidMem(ScrnInfoPtr pScrn) { VBOXPtr pVBox = VBOXGetRec(pScrn); TRACE_ENTRY(); if (pVBox->base == NULL) return; #ifdef PCIACCESS (void) pci_device_unmap_range(pVBox->pciInfo, pVBox->base, pScrn->videoRam * 1024); #else xf86UnMapVidMem(pScrn->scrnIndex, pVBox->base, (unsigned) pScrn->videoRam * 1024); #endif vgaHWUnmapMem(pScrn); pVBox->base = NULL; TRACE_EXIT(); } static Bool VBOXSaveScreen(ScreenPtr pScreen, int mode) { (void)pScreen; (void)mode; return TRUE; } Bool VBOXSaveRestore(ScrnInfoPtr pScrn, vbeSaveRestoreFunction function) { VBOXPtr pVBox; Bool rc = TRUE; TRACE_ENTRY(); if (MODE_QUERY < 0 || function > MODE_RESTORE) rc = FALSE; if (rc) { pVBox = VBOXGetRec(pScrn); /* Query amount of memory to save state */ if (function == MODE_QUERY || (function == MODE_SAVE && pVBox->state == NULL)) { /* Make sure we save at least this information in case of failure */ (void)VBEGetVBEMode(pVBox->pVbe, &pVBox->stateMode); vgaHWSaveFonts(pScrn, &pVBox->vgaRegs); if (!VBESaveRestore(pVBox->pVbe,function,(pointer)&pVBox->state, &pVBox->stateSize,&pVBox->statePage) ) rc = FALSE; } } if (rc) { /* Save/Restore Super VGA state */ if (function != MODE_QUERY) { if (function == MODE_RESTORE) memcpy(pVBox->state, pVBox->pstate, (unsigned) pVBox->stateSize); if ( (rc = VBESaveRestore(pVBox->pVbe,function, (pointer)&pVBox->state, &pVBox->stateSize,&pVBox->statePage) ) && (function == MODE_SAVE) ) { /* don't rely on the memory not being touched */ if (pVBox->pstate == NULL) pVBox->pstate = malloc(pVBox->stateSize); memcpy(pVBox->pstate, pVBox->state, (unsigned) pVBox->stateSize); } if (function == MODE_RESTORE) { VBESetVBEMode(pVBox->pVbe, pVBox->stateMode, NULL); vgaHWRestoreFonts(pScrn, &pVBox->vgaRegs); } } } TRACE_LOG("returning %s\n", rc ? "TRUE" : "FALSE"); return rc; } static void VBOXDisplayPowerManagementSet(ScrnInfoPtr pScrn, int mode, int flags) { (void)pScrn; (void)mode; (void) flags; }