diff options
Diffstat (limited to 'xorg-server/hw/xfree86/os-support/sysv')
| -rw-r--r-- | xorg-server/hw/xfree86/os-support/sysv/Makefile.am | 1 | ||||
| -rw-r--r-- | xorg-server/hw/xfree86/os-support/sysv/Makefile.in | 532 | ||||
| -rw-r--r-- | xorg-server/hw/xfree86/os-support/sysv/sysv_init.c | 252 | ||||
| -rw-r--r-- | xorg-server/hw/xfree86/os-support/sysv/sysv_mouse.c | 60 | ||||
| -rw-r--r-- | xorg-server/hw/xfree86/os-support/sysv/sysv_video.c | 367 |
5 files changed, 1212 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/os-support/sysv/Makefile.am b/xorg-server/hw/xfree86/os-support/sysv/Makefile.am new file mode 100644 index 000000000..f9d2f237a --- /dev/null +++ b/xorg-server/hw/xfree86/os-support/sysv/Makefile.am @@ -0,0 +1 @@ +EXTRA_DIST = sysv_init.c sysv_mouse.c sysv_video.c diff --git a/xorg-server/hw/xfree86/os-support/sysv/Makefile.in b/xorg-server/hw/xfree86/os-support/sysv/Makefile.in new file mode 100644 index 000000000..2a27a19e1 --- /dev/null +++ b/xorg-server/hw/xfree86/os-support/sysv/Makefile.in @@ -0,0 +1,532 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = hw/xfree86/os-support/sysv +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/acinclude.m4 \ + $(top_srcdir)/configure.ac +am__configure_deps = 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\ + distclean distclean-generic distclean-libtool distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-ps install-ps-am install-strip \ + installcheck installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am uninstall uninstall-am + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/xorg-server/hw/xfree86/os-support/sysv/sysv_init.c b/xorg-server/hw/xfree86/os-support/sysv/sysv_init.c new file mode 100644 index 000000000..170bb8914 --- /dev/null +++ b/xorg-server/hw/xfree86/os-support/sysv/sysv_init.c @@ -0,0 +1,252 @@ +/* + * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany + * Copyright 1993 by David Wexelblat <dwex@goblin.org> + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the names of Thomas Roell and David Wexelblat + * not be used in advertising or publicity pertaining to distribution of + * the software without specific, written prior permission. Thomas Roell and + * David Wexelblat makes no representations about the suitability of this + * software for any purpose. It is provided "as is" without express or + * implied warranty. + * + * THOMAS ROELL AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID WEXELBLAT BE LIABLE FOR + * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF + * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <X11/X.h> +#include <X11/Xmd.h> + +#include "compiler.h" + +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" + +static Bool KeepTty = FALSE; +#ifdef SVR4 +static Bool Protect0 = FALSE; +#endif +static int VTnum = -1; + + +void +xf86OpenConsole() +{ + int fd; + struct vt_mode VT; + char vtname1[10],vtname2[10]; + MessageType from = X_PROBED; + + if (serverGeneration == 1) + { + /* check if we're run with euid==0 */ + if (geteuid() != 0) + { + FatalError("xf86OpenConsole: Server must be suid root\n"); + } + +#ifdef SVR4 + /* Protect page 0 to help find NULL dereferencing */ + /* mprotect() doesn't seem to work */ + if (Protect0) + { + int fd = -1; + + if ((fd = open("/dev/zero", O_RDONLY, 0)) < 0) + { + xf86Msg(X_WARNING, + "xf86OpenConsole: cannot open /dev/zero (%s)\n", + strerror(errno)); + } + else + { + if ((int)mmap(0, 0x1000, PROT_NONE, + MAP_FIXED | MAP_SHARED, fd, 0) == -1) + { + xf86Msg(X_WARNING, + "xf86OpenConsole: failed to protect page 0 (%s)\n", + strerror(errno)); + } + close(fd); + } + } +#endif + /* + * setup the virtual terminal manager + */ + if (VTnum != -1) + { + xf86Info.vtno = VTnum; + from = X_CMDLINE; + } + else + { + if ((fd = open("/dev/console",O_WRONLY,0)) < 0) + { + FatalError( + "xf86OpenConsole: Cannot open /dev/console (%s)\n", + strerror(errno)); + } + if ((ioctl(fd, VT_OPENQRY, &xf86Info.vtno) < 0) || + (xf86Info.vtno == -1)) + { + FatalError("xf86OpenConsole: Cannot find a free VT\n"); + } + close(fd); + } + xf86Msg(from, "using VT number %d\n\n", xf86Info.vtno); + + sprintf(vtname1,"/dev/vc%02d",xf86Info.vtno); /* ESIX */ + sprintf(vtname2,"/dev/vt%02d",xf86Info.vtno); /* rest of the world */ + + if (!KeepTty) + { + setpgrp(); + } + + if (((xf86Info.consoleFd = open(vtname1, O_RDWR|O_NDELAY, 0)) < 0) && + ((xf86Info.consoleFd = open(vtname2, O_RDWR|O_NDELAY, 0)) < 0)) + { + FatalError("xf86OpenConsole: Cannot open %s (%s) (%s)\n", + vtname2, vtname1, strerror(errno)); + } + + /* change ownership of the vt */ + if (chown(vtname1, getuid(), getgid()) < 0) + { + chown(vtname2, getuid(), getgid()); + } + + /* + * now get the VT + */ + if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno) != 0) + { + xf86Msg(X_WARNING, "xf86OpenConsole: VT_ACTIVATE failed\n"); + } + if (ioctl(xf86Info.consoleFd, VT_WAITACTIVE, xf86Info.vtno) != 0) + { + xf86Msg(X_WARNING, "xf86OpenConsole: VT_WAITACTIVE failed\n"); + } + if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) < 0) + { + FatalError("xf86OpenConsole: VT_GETMODE failed\n"); + } + + signal(SIGUSR1, xf86VTRequest); + + VT.mode = VT_PROCESS; + VT.relsig = SIGUSR1; + VT.acqsig = SIGUSR1; + if (ioctl(xf86Info.consoleFd, VT_SETMODE, &VT) < 0) + { + FatalError("xf86OpenConsole: VT_SETMODE VT_PROCESS failed\n"); + } + if (ioctl(xf86Info.consoleFd, KDSETMODE, KD_GRAPHICS) < 0) + { + FatalError("xf86OpenConsole: KDSETMODE KD_GRAPHICS failed\n"); + } + } + else + { + /* serverGeneration != 1 */ + /* + * now get the VT + */ + if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno) != 0) + { + xf86Msg(X_WARNING, "xf86OpenConsole: VT_ACTIVATE failed\n"); + } + if (ioctl(xf86Info.consoleFd, VT_WAITACTIVE, xf86Info.vtno) != 0) + { + xf86Msg(X_WARNING, "xf86OpenConsole: VT_WAITACTIVE failed\n"); + } + /* + * If the server doesn't have the VT when the reset occurs, + * this is to make sure we don't continue until the activate + * signal is received. + */ + if (!xf86Screens[0]->vtSema) + sleep(5); + } + return; +} + +void +xf86CloseConsole() +{ + struct vt_mode VT; + +#if 0 + ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno); + ioctl(xf86Info.consoleFd, VT_WAITACTIVE, 0); +#endif + ioctl(xf86Info.consoleFd, KDSETMODE, KD_TEXT); /* Back to text mode ... */ + if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) != -1) + { + VT.mode = VT_AUTO; + ioctl(xf86Info.consoleFd, VT_SETMODE, &VT); /* set dflt vt handling */ + } + close(xf86Info.consoleFd); /* make the vt-manager happy */ + return; +} + +int +xf86ProcessArgument(int argc, char *argv[], int i) +{ + /* + * Keep server from detaching from controlling tty. This is useful + * when debugging (so the server can receive keyboard signals. + */ + if (!strcmp(argv[i], "-keeptty")) + { + KeepTty = TRUE; + return(1); + } +#ifdef SVR4 + /* + * Undocumented flag to protect page 0 from read/write to help + * catch NULL pointer dereferences. This is purely a debugging + * flag. + */ + if (!strcmp(argv[i], "-protect0")) + { + Protect0 = TRUE; + return(1); + } +#endif + if ((argv[i][0] == 'v') && (argv[i][1] == 't')) + { + if (sscanf(argv[i], "vt%2d", &VTnum) == 0) + { + UseMsg(); + VTnum = -1; + return(0); + } + return(1); + } + return(0); +} + +void +xf86UseMsg() +{ + ErrorF("vtXX use the specified VT number\n"); + ErrorF("-keeptty "); + ErrorF("don't detach controlling tty (for debugging only)\n"); + return; +} diff --git a/xorg-server/hw/xfree86/os-support/sysv/sysv_mouse.c b/xorg-server/hw/xfree86/os-support/sysv/sysv_mouse.c new file mode 100644 index 000000000..e62010515 --- /dev/null +++ b/xorg-server/hw/xfree86/os-support/sysv/sysv_mouse.c @@ -0,0 +1,60 @@ + +/* + * Copyright 1999 by The XFree86 Project, Inc. + */ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <X11/X.h> +#include "xf86.h" +#include "xf86Xinput.h" +#include "xf86OSmouse.h" + +static int +SupportedInterfaces(void) +{ + /* XXX Need to check this. */ + return MSE_SERIAL | MSE_AUTO; +} + +#ifndef ISC +static const char *internalNames[] = { + NULL +}; + +static const char ** +BuiltinNames(void) +{ + return internalNames; +} + +static Bool +CheckProtocol(const char *protocol) +{ + int i; + + for (i = 0; internalNames[i]; i++) + if (xf86NameCmp(protocol, internalNames[i]) == 0) + return TRUE; + return FALSE; +} +#endif + +_X_EXPORT OSMouseInfoPtr +xf86OSMouseInit(int flags) +{ + OSMouseInfoPtr p; + + p = xcalloc(sizeof(OSMouseInfoRec), 1); + if (!p) + return NULL; + p->SupportedInterfaces = SupportedInterfaces; +#ifndef ISC + p->BuiltinNames = BuiltinNames; + p->CheckProtocol = CheckProtocol; +#endif + return p; +} + diff --git a/xorg-server/hw/xfree86/os-support/sysv/sysv_video.c b/xorg-server/hw/xfree86/os-support/sysv/sysv_video.c new file mode 100644 index 000000000..9972bcaa4 --- /dev/null +++ b/xorg-server/hw/xfree86/os-support/sysv/sysv_video.c @@ -0,0 +1,367 @@ +/* + * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany + * Copyright 1993 by David Wexelblat <dwex@goblin.org> + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the names of Thomas Roell and David Wexelblat + * not be used in advertising or publicity pertaining to distribution of + * the software without specific, written prior permission. Thomas Roell and + * David Wexelblat makes no representations about the suitability of this + * software for any purpose. It is provided "as is" without express or + * implied warranty. + * + * THOMAS ROELL AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID WEXELBLAT BE LIABLE FOR + * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF + * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <X11/X.h> + +#define _NEED_SYSI86 +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" +#include "xf86OSpriv.h" + +#ifndef MAP_FAILED +#define MAP_FAILED ((void *)-1) +#endif + +#ifndef SI86IOPL +#define SET_IOPL() sysi86(SI86V86,V86SC_IOPL,PS_IOPL) +#define RESET_IOPL() sysi86(SI86V86,V86SC_IOPL,0) +#else +#define SET_IOPL() sysi86(SI86IOPL,3) +#define RESET_IOPL() sysi86(SI86IOPL,0) +#endif + +/***************************************************************************/ +/* Video Memory Mapping section */ +/***************************************************************************/ + +/* + * XXX Support for SVR3 will need to be reworked if needed. In particular + * the Region parameter is no longer passed, and will need to be dealt + * with internally if required. + * OK, i'll rework that thing ... (clean it up a lot) + * SVR3 Support only with SVR3_MMAPDRV (mr) + * + */ + +#ifdef HAS_SVR3_MMAPDRV +#ifndef MMAP_DEBUG +#define MMAP_DEBUG 3 +#endif + +struct kd_memloc MapDSC; +int mmapFd = -2; + +static int +mmapStat(pointer Base, unsigned long Size) { + + int nmmreg,i=0,region=-1; + mmapinfo_t *ibuf; + + nmmreg = ioctl(mmapFd, GETNMMREG); + + if(nmmreg <= 0) + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "\nNo physical memory mapped currently.\n\n"); + else { + if((ibuf = (mmapinfo_t *)malloc(nmmreg*sizeof(mmapinfo_t))) == NULL) + xf86Msg(X_WARNING, + "Couldn't allocate memory 4 mmapinfo_t\n"); + else { + if(ioctl(mmapFd, GETMMREG, ibuf) != -1) + { + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "# mmapStat: [Size=%x,Base=%x]\n", Size, Base); + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "# Physical Address Size Reference Count\n"); + for(i = 0; i < nmmreg; i++) { + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "%-4d 0x%08X %5dk %5d ", + i, ibuf[i].physaddr, ibuf[i].length/1024, ibuf[i].refcnt); + if (ibuf[i].physaddr == Base || ibuf[i].length == Size ) { + xf86MsgVerb(X_INFO, MMAP_DEBUG,"MATCH !!!"); + if (region==-1) region=i; + } + xf86ErrorFVerb(MMAP_DEBUG, "\n"); + } + xf86ErrorFVerb(MMAP_DEBUG, "\n"); + } + free(ibuf); + } + } + if (region == -1 && nmmreg > 0) region=region * i; + return(region); +} +#endif + + +static Bool +linearVidMem() +{ +#ifdef SVR4 + return TRUE; +#elif defined(HAS_SVR3_MMAPDRV) + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "# xf86LinearVidMem: MMAP 2.2.2 called\n"); + + if(mmapFd >= 0) return TRUE; + + if ((mmapFd = open("/dev/mmap", O_RDWR)) != -1) + { + if(ioctl(mmapFd, GETVERSION) < 0x0222) { + xf86Msg(X_WARNING, + "xf86LinearVidMem: MMAP 2.2.2 or above required\n"); + xf86ErrorF("\tlinear memory access disabled\n"); + return FALSE; + } + return TRUE; + } + xf86Msg(X_WARNING, "xf86LinearVidMem: failed to open /dev/mmap (%s)\n", + strerror(errno)); + xf86ErrorF("\tlinear memory access disabled\n"); + return FALSE; +#endif +} + +static pointer +mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags) +{ + pointer base; + int fd; + +#if defined(SVR4) + fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR); + if (fd < 0) + { + FatalError("xf86MapVidMem: failed to open %s (%s)\n", + DEV_MEM, strerror(errno)); + } + base = mmap((caddr_t)0, Size, + (flags & VIDMEM_READONLY) ? + PROT_READ : (PROT_READ | PROT_WRITE), + MAP_SHARED, fd, (off_t)Base); + close(fd); + if (base == MAP_FAILED) + { + FatalError("%s: Could not mmap framebuffer [s=%x,a=%x] (%s)\n", + "xf86MapVidMem", Size, Base, strerror(errno)); + } +#else /* SVR4 */ +#ifdef HAS_SVR3_MMAPDRV + + xf86MsgVerb(X_INFO, MMAP_DEBUG, "# xf86MapVidMem: MMAP 2.2.2 called\n"); + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "MMAP_VERSION: 0x%x\n",ioctl(mmapFd, GETVERSION)); + if (ioctl(mmapFd, GETVERSION) == -1) + { + xf86LinearVidMem(); + } + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "MMAP_VERSION: 0x%x\n",ioctl(mmapFd, GETVERSION)); + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "xf86MapVidMem: Screen: %d\n", ScreenNum); + mmapStat(Base,Size); + /* To force the MMAP driver to provide the address */ + base = (pointer)0; + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "xf86MapVidMem: [s=%x,a=%x]\n", Size, Base); + MapDSC.vaddr = (char *)base; + MapDSC.physaddr = (char *)Base; + MapDSC.length = Size; + MapDSC.ioflg = 1; + if(mmapFd >= 0) + { + if((base = (pointer)ioctl(mmapFd, MAP, &MapDSC)) == (pointer)-1) + { + FatalError("%s: Could not mmap framebuffer [s=%x,a=%x] (%s)\n", + "xf86MapVidMem", Size, Base, strerror(errno)); + /* NOTREACHED */ + } + + /* Next time we want the same address! */ + MapDSC.vaddr = (char *)base; + } + + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "MapDSC.vaddr : 0x%x\n", MapDSC.vaddr); + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "MapDSC.physaddr: 0x%x\n", MapDSC.physaddr); + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "MapDSC.length : %d\n", MapDSC.length); + mmapStat(Base,Size); + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "xf86MapVidMem: [s=%x,a=%x,b=%x]\n", Size, Base, base); + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "xf86MapVidMem: SUCCEED Mapping FrameBuffer \n"); +#endif /* HAS_SVR3_MMAPDRV */ +#endif /* SVR4 */ + return(base); +} + +/* ARGSUSED */ +static void +unmapVidMem(int ScreenNum, pointer Base, unsigned long Size) +{ +#if defined (SVR4) + munmap(Base, Size); +#else /* SVR4 */ +#ifdef HAS_SVR3_MMAPDRV + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "# xf86UnMapVidMem: UNMapping FrameBuffer\n"); + mmapStat(Base,Size); + ioctl(mmapFd, UNMAPRM , Base); + mmapStat(Base,Size); + xf86MsgVerb(X_INFO, MMAP_DEBUG, + "# xf86UnMapVidMem: Screen: %d [v=%x]\n", ScreenNum, Base); +#endif /* HAS_SVR3_MMAPDRV */ +#endif /* SVR4 */ + return; +} + +#if defined(SVR4) && defined(__i386__) && !defined(sun) +/* + * For some SVR4 versions, a 32-bit read is done for the first location + * in each page when the page is first mapped. If this is done while + * memory access is enabled for regions that have read side-effects, + * this can cause unexpected results, including lockups on some hardware. + * This function is called to make sure each page is mapped while it is + * safe to do so. + */ + +/* + * XXX Should get this the correct way (see os/xalloc.c), but since this is + * for one platform I'll be lazy. + */ +#define X_PAGE_SIZE 4096 + +static void +readSideEffects(int ScreenNum, pointer Base, unsigned long Size) +{ + unsigned long base, end, addr; + CARD32 val; + + base = (unsigned long)Base; + end = base + Size; + + for (addr = base; addr < end; addr += X_PAGE_SIZE) + val = *(volatile CARD32 *)addr; +} +#endif + +void +xf86OSInitVidMem(VidMemInfoPtr pVidMem) +{ + pVidMem->linearSupported = linearVidMem(); + pVidMem->mapMem = mapVidMem; + pVidMem->unmapMem = unmapVidMem; +#if defined(SVR4) && defined(__i386__) && !defined(sun) + pVidMem->readSideEffects = readSideEffects; +#endif + pVidMem->initialised = TRUE; +} + +/***************************************************************************/ +/* I/O Permissions section */ +/***************************************************************************/ + +static Bool ExtendedEnabled = FALSE; +static Bool InitDone = FALSE; + +_X_EXPORT Bool +xf86EnableIO() +{ + int i; + + if (ExtendedEnabled) + return TRUE; + + if (SET_IOPL() < 0) + { + xf86Msg(X_WARNING, + "xf86EnableIO: Failed to set IOPL for extended I/O\n"); + return FALSE; + } + ExtendedEnabled = TRUE; + + return TRUE; +} + +_X_EXPORT void +xf86DisableIO() +{ + if (!ExtendedEnabled) + return; + + RESET_IOPL(); + ExtendedEnabled = FALSE; + + return; +} + +/***************************************************************************/ +/* Interrupt Handling section */ +/***************************************************************************/ + +_X_EXPORT Bool +xf86DisableInterrupts() +{ + if (!ExtendedEnabled) + { + if (SET_IOPL() < 0) + { + return(FALSE); + } + } + +#ifdef __GNUC__ + __asm__ __volatile__("cli"); +#else + asm("cli"); +#endif /* __GNUC__ */ + + if (!ExtendedEnabled) + { + RESET_IOPL(); + } + return(TRUE); +} + +_X_EXPORT void +xf86EnableInterrupts() +{ + if (!ExtendedEnabled) + { + if (SET_IOPL() < 0) + { + return; + } + } + +#ifdef __GNUC__ + __asm__ __volatile__("sti"); +#else + asm("sti"); +#endif /* __GNUC__ */ + + if (!ExtendedEnabled) + { + RESET_IOPL(); + } + return; +} |