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/*
* 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 HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#if defined(__i386__) || defined(__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.
*/
_X_EXPORT int
xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
int Len)
{
int fd;
unsigned char *ptr;
char solx86_vtname[20];
int psize;
int mlen;
/*
* Solaris 2.1 x86 SVR4 (10/27/93)
* The server must treat the virtual terminal device file
* as the standard SVR4 /dev/pmem. By default, then used VT
* is considered the "default" file to open.
*
* Solaris 2.8 x86 (7/26/99) - DWH
*
* Use /dev/xsvc for everything.
*/
psize = getpagesize();
Offset += Base & (psize - 1);
Base &= ~(psize - 1);
mlen = (Offset + Len + psize - 1) & ~(psize - 1);
#if (defined(__i386__) || defined(__i386)) && !defined(__SOL8__)
if (Base >= 0xA0000 && Base + mlen < 0xFFFFF && xf86Info.vtno >= 0)
sprintf(solx86_vtname, "/dev/vt%02d", xf86Info.vtno);
else
#endif
{
if (!xf86LinearVidMem())
FatalError("xf86ReadBIOS: Could not mmap BIOS"
" [a=%lx]\n", Base);
sprintf(solx86_vtname, apertureDevName);
}
if ((fd = open(solx86_vtname, O_RDONLY)) < 0)
{
xf86Msg(X_WARNING, "xf86ReadBIOS: Failed to open %s (%s)\n",
solx86_vtname, 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",
solx86_vtname, 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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