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/* $XConsortium$ */
/*
* 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 name of David Wexelblat not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. David Wexelblat makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL 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.
*
*/
#include "X.h"
#include "input.h"
#include "scrnintstr.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
/*
* Read BIOS via /dev/mem.
*/
#ifndef DEV_MEM
# define DEV_MEM "/dev/mem"
#endif
int xf86ReadBIOS(Base, Offset, Buf, Len)
unsigned long Base;
unsigned long Offset;
unsigned char *Buf;
int Len;
{
int fd;
if ((fd = open(DEV_MEM, O_RDONLY)) < 0)
{
ErrorF("xf86ReadBios: Failed to open %s (%s)\n", DEV_MEM,
strerror(errno));
return(-1);
}
if (lseek(fd, (Base+Offset), SEEK_SET) < 0)
{
ErrorF("xf86ReadBios: %s seek failed (%s)\n", DEV_MEM,
strerror(errno));
close(fd);
return(-1);
}
if (read(fd, Buf, Len) != Len)
{
ErrorF("xf86ReadBios: %s read failed (%s)\n", DEV_MEM,
strerror(errno));
close(fd);
return(-1);
}
close(fd);
return(Len);
}
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