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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/sunos/sun_bios.c,v 1.4 2004/03/08 15:37:12 tsi Exp $ */
/*
* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
* Copyright 1993 by David Wexelblat <dwex@goblin.org>
* Copyright 1999 by David Holland <davidh@iquest.net>
*
* 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 the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT
* SHALL THE COPYRIGHT HOLDERS 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 i386
#define _NEED_SYSI86
#endif
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#ifndef MAP_FAILED
#define MAP_FAILED ((void *)-1)
#endif
extern char *apertureDevName;
/*
* Read BIOS via mmap()ing physical memory.
*/
int
xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
int Len)
{
int fd;
unsigned char *ptr;
int psize;
int mlen;
psize = xf86getpagesize();
Offset += Base & (psize - 1);
Base &= ~(psize - 1);
mlen = (Offset + Len + psize - 1) & ~(psize - 1);
if (!xf86LinearVidMem())
FatalError("xf86ReadBIOS: Could not mmap BIOS [a=%lx]\n", Base);
if ((fd = open(apertureDevName, O_RDONLY)) < 0)
{
xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to open %s (%s)\n",
apertureDevName, strerror(errno));
return(-1);
}
ptr = (unsigned char *)mmap((caddr_t)0, mlen, PROT_READ,
MAP_SHARED, fd, (off_t)Base);
if (ptr == MAP_FAILED)
{
xf86Msg(X_WARNING, "xf86ReadBIOS: %s mmap failed "
"[0x%08lx, 0x%04x]\n",
apertureDevName, Base, mlen);
close(fd);
return -1;
}
(void)memcpy(Buf, (void *)(ptr + Offset), Len);
(void)munmap((caddr_t)ptr, mlen);
(void)close(fd);
return Len;
}
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