xorg-server-1.4/hw/xfree86/os-support/bsd/sparc64_video.c

   1 /*
   2  * Copyright 1992 by Rich Murphey <Rich@Rice.edu>
   3  * Copyright 1993 by David Wexelblat <dwex@goblin.org>
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and its
   6  * documentation for any purpose is hereby granted without fee, provided that
   7  * the above copyright notice appear in all copies and that both that
   8  * copyright notice and this permission notice appear in supporting
   9  * documentation, and that the names of Rich Murphey and David Wexelblat
  10  * not be used in advertising or publicity pertaining to distribution of
  11  * the software without specific, written prior permission.  Rich Murphey and
  12  * David Wexelblat make no representations about the suitability of this
  13  * software for any purpose.  It is provided "as is" without express or
  14  * implied warranty.
  15  *
  16  * RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO
  17  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  18  * FITNESS, IN NO EVENT SHALL RICH MURPHEY OR DAVID WEXELBLAT BE LIABLE FOR
  19  * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  20  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  21  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  22  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  23  *
  24  */
  25
  26 #ifdef HAVE_XORG_CONFIG_H
  27 #include <xorg-config.h>
  28 #endif
  29
  30 #include <X11/X.h>
  31 #include "xf86.h"
  32 #include "xf86Priv.h"
  33
  34 #include "xf86_OSlib.h"
  35 #include "xf86OSpriv.h"
  36
  37 #ifndef MAP_FAILED
  38 #define MAP_FAILED ((caddr_t)-1)
  39 #endif
  40
  41 /***************************************************************************/
  42 /* Video Memory Mapping section                                            */
  43 /***************************************************************************/
  44
  45 static pointer sparc64MapVidMem(int, unsigned long, unsigned long, int);
  46 static void sparc64UnmapVidMem(int, pointer, unsigned long);
  47
  48 void
  49 xf86OSInitVidMem(VidMemInfoPtr pVidMem)
  50 {
  51         pVidMem->linearSupported = TRUE;
  52         pVidMem->mapMem = sparc64MapVidMem;
  53         pVidMem->unmapMem = sparc64UnmapVidMem;
  54         pVidMem->initialised = TRUE;
  55 }
  56
  57 static pointer
  58 sparc64MapVidMem(int ScreenNum, unsigned long Base, unsigned long Size,
  59                  int flags)
  60 {
  61         int fd = xf86Info.screenFd;
  62         pointer base;
  63
  64 #ifdef DEBUG
  65         xf86MsgVerb(X_INFO, 3, "mapVidMem %lx, %lx, fd = %d",
  66                     Base, Size, fd);
  67 #endif
  68
  69         base = mmap(0, Size,
  70                     (flags & VIDMEM_READONLY) ?
  71                      PROT_READ : (PROT_READ | PROT_WRITE),
  72                     MAP_SHARED, fd, Base);
  73         if (base == MAP_FAILED)
  74                 FatalError("%s: could not mmap screen [s=%x,a=%x] (%s)",
  75                            "xf86MapVidMem", Size, Base, strerror(errno));
  76         return base;
  77 }
  78
  79 static void
  80 sparc64UnmapVidMem(int ScreenNum, pointer Base, unsigned long Size)
  81 {
  82         munmap(Base, Size);
  83 }
  84
  85 _X_EXPORT int
  86 xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
  87              int Len)
  88 {
  89
  90         return (0);
  91 }
  92
  93 /***************************************************************************/
  94 /* Interrupt Handling section                                              */
  95 /***************************************************************************/
  96
  97 _X_EXPORT Bool
  98 xf86DisableInterrupts()
  99 {
 100
 101         return(TRUE);
 102 }
 103
 104 _X_EXPORT void
 105 xf86EnableInterrupts()
 106 {
 107
 108         return;
 109 }