119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
/*
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* Copyright 1992 by Rich Murphey <Rich@Rice.edu>
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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 Rich Murphey 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. Rich Murphey and
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* 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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* RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO
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* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL RICH MURPHEY OR DAVID WEXELBLAT BE LIABLE FOR
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* ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* 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 <X11/X.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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#ifndef MAP_FAILED
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#define MAP_FAILED ((caddr_t)-1)
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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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static pointer sgiMapVidMem(int, unsigned long, unsigned long, int);
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static void sgiUnmapVidMem(int, pointer, unsigned long);
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void
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xf86OSInitVidMem(VidMemInfoPtr pVidMem)
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{
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pVidMem->linearSupported = TRUE;
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pVidMem->mapMem = sgiMapVidMem;
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pVidMem->unmapMem = sgiUnmapVidMem;
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pVidMem->initialised = TRUE;
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}
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static pointer
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sgiMapVidMem(int ScreenNum, unsigned long Base, unsigned long Size,
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int flags)
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{
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int fd = xf86Info.consoleFd;
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pointer base;
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#ifdef DEBUG
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xf86MsgVerb(X_INFO, 3, "mapVidMem %lx, %lx, fd = %d",
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Base, Size, fd);
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#endif
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base = mmap(0, Size,
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(flags & VIDMEM_READONLY) ?
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PROT_READ : (PROT_READ | PROT_WRITE),
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MAP_SHARED, fd, Base);
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if (base == MAP_FAILED)
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FatalError("%s: could not mmap screen [s=%x,a=%x] (%s)",
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"xf86MapVidMem", Size, Base, strerror(errno));
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return base;
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}
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static void
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sgiUnmapVidMem(int ScreenNum, pointer Base, unsigned long Size)
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{
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munmap(Base, Size);
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}
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_X_EXPORT int
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xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
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int Len)
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{
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return (0);
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}
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/***************************************************************************/
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/* Interrupt Handling section */
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/***************************************************************************/
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_X_EXPORT Bool
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xf86DisableInterrupts()
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{
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return(TRUE);
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}
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_X_EXPORT void
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xf86EnableInterrupts()
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{
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return;
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}
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#ifdef X_PRIVSEP
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/*
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* Do all things that need root privileges early
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* and revoke those privileges
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*/
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_X_EXPORT void
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xf86PrivilegedInit(void)
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{
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xf86OpenConsole();
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}
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#endif
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