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2da0bde449
In commit9db2af6f75(xfree86: Remove xf86{Map,Unmap}VidMem) we somehow stopped exporting xf86{Read,Write}Mmio{8,16,32}. Since the function pointer indirection was intended to support dense vs sparse and sparse support is now gone, we can just make the functions static inline in compiler.h and avoid all of this. Bugzilla: https://bugs.gentoo.org/548906 Tested-by: Christopher May-Townsend <chris@maytownsend.co.uk> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Matt Turner <mattst88@gmail.com> (cherry picked from commit166ac294ae)
168 lines
4.3 KiB
C
168 lines
4.3 KiB
C
/*
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* Copyright 1992 by Orest Zborowski <obz@Kodak.com>
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* Copyright 1993 by David Wexelblat <dwex@goblin.org>
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the names of Orest Zborowski and David Wexelblat
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* not be used in advertising or publicity pertaining to distribution of
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* the software without specific, written prior permission. Orest Zborowski
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* and David Wexelblat make no representations about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*
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* OREST ZBOROWSKI AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD
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* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL OREST ZBOROWSKI OR DAVID WEXELBLAT BE LIABLE
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* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <errno.h>
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#include <string.h>
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#include <X11/X.h>
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#include "input.h"
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#include "scrnintstr.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#include "xf86OSpriv.h"
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static Bool ExtendedEnabled = FALSE;
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#ifdef __ia64__
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#include "compiler.h"
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#include <sys/io.h>
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#elif !defined(__powerpc__) && \
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!defined(__mc68000__) && \
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!defined(__sparc__) && \
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!defined(__mips__) && \
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!defined(__nds32__) && \
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!defined(__arm__) && \
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!defined(__aarch64__) && \
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!defined(__arc__) && \
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!defined(__xtensa__)
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/*
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* Due to conflicts with "compiler.h", don't rely on <sys/io.h> to declare
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* these.
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*/
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extern int ioperm(unsigned long __from, unsigned long __num, int __turn_on);
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extern int iopl(int __level);
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#endif
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/***************************************************************************/
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/* Video Memory Mapping section */
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/***************************************************************************/
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void
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xf86OSInitVidMem(VidMemInfoPtr pVidMem)
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{
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pVidMem->initialised = TRUE;
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}
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/***************************************************************************/
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/* I/O Permissions section */
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/***************************************************************************/
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#if defined(__powerpc__)
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volatile unsigned char *ioBase = NULL;
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#ifndef __NR_pciconfig_iobase
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#define __NR_pciconfig_iobase 200
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#endif
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static Bool
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hwEnableIO(void)
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{
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int fd;
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unsigned int ioBase_phys = syscall(__NR_pciconfig_iobase, 2, 0, 0);
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fd = open("/dev/mem", O_RDWR);
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if (ioBase == NULL) {
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ioBase = (volatile unsigned char *) mmap(0, 0x20000,
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PROT_READ | PROT_WRITE,
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MAP_SHARED, fd, ioBase_phys);
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}
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close(fd);
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return ioBase != MAP_FAILED;
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}
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static void
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hwDisableIO(void)
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{
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munmap(ioBase, 0x20000);
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ioBase = NULL;
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}
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#elif defined(__i386__) || defined(__x86_64__) || defined(__ia64__) || \
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defined(__alpha__)
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static Bool
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hwEnableIO(void)
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{
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if (ioperm(0, 1024, 1) || iopl(3)) {
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ErrorF("xf86EnableIOPorts: failed to set IOPL for I/O (%s)\n",
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strerror(errno));
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return FALSE;
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}
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#if !defined(__alpha__)
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/* XXX: this is actually not trapping anything because of iopl(3)
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* above */
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ioperm(0x40, 4, 0); /* trap access to the timer chip */
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ioperm(0x60, 4, 0); /* trap access to the keyboard controller */
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#endif
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return TRUE;
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}
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static void
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hwDisableIO(void)
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{
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iopl(0);
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ioperm(0, 1024, 0);
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}
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#else /* non-IO architectures */
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#define hwEnableIO() TRUE
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#define hwDisableIO() do {} while (0)
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#endif
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Bool
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xf86EnableIO(void)
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{
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if (ExtendedEnabled)
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return TRUE;
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ExtendedEnabled = hwEnableIO();
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return ExtendedEnabled;
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}
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void
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xf86DisableIO(void)
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{
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if (!ExtendedEnabled)
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return;
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hwDisableIO();
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ExtendedEnabled = FALSE;
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}
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