From 3.1.2 version (for NetBSD).
--- /dev/null
+# $OpenBSD: Makefile,v 1.1 1996/03/05 11:25:24 mickey Exp $
+
+LKM= ap
+SRCS+= aperture.c lkm.c version.c
+NOMAN= noman
+SUBDIR= aptest
+
+.include <bsd.lkm.mk>
--- /dev/null
+# $OpenBSD: README,v 1.1 1996/03/05 11:25:27 mickey Exp $
+
+ XFree86 Framebuffer aperture driver for NetBSD.
+ -----------------------------------------------
+
+This module was written to help work around the security feature of
+NetBSD 0.9C and later that prevents read/write access to /dev/mem.
+
+XFree86 can take advantage of having direct access to video
+memory (especially with VLB and PCI cards) and even requires it for
+the P9000 server.
+
+This driver works like the standard /dev/mem driver. It just allows
+mapping of the VGA framebuffer even if kernel security level is > 0.
+The driver only implements the open(), close() and mmap() calls. In
+order not to defeat kernel security, only one open() at a time is
+allowed and only a process with effective user id of 0 can perform
+it. So while you're running XFree86, no other process will be allowed
+to open /dev/xf86.
+
+This work is heavily inspired from the Solaris x86 aperture driver by
+Doug Anson (danson@lgc.com) and David Holland (davidh@use.com).
+
+
+Installation:
+-------------
+
+1. Edit the Makefile if you want to modify the default installation
+ directory.
+
+2. run make depend && make; then as root, run make install.
+
+3. add these lines somehere at the end of /etc/rc.local (before the
+ sysctl that raises the security level):
+
+ KERNDIR=/usr/X11R6/lib/X11/kernel
+ if [ -f ${KERNDIR}/ap.o ]; then
+ modload -o ${KERNDIR}/ap -e ap -p ${KERNDIR}/apinstall ${KERNDIR}/ap.o
+ fi
+
+ to load the driver at bootime.
+
+4. Reboot your system.
+
+5. If you're running a version prior to NetBSD 1.0, modload does not
+ execute post-install scripts. So you have to create the device manually.
+ If you're running NetBSD 1.0 or later, skip this.
+
+ WARNING: be sure to understand what you'll do before proceeding
+
+ a) find out what major device number will be allocated to you by
+ modload. Modload allocates major numbers beginning at 29. So if
+ 'ap' is your only device driver module, it will have major
+ number 29. If it's the third, it will be 31...
+
+ b) goto the /dev directory and type ``mknod xf86 c 29 0'' (replace
+ 29 by the appropriate value if you load more than one device
+ driver module.
+
+ Make sure that rc.local loads the module every time at the same
+ position as it did now.
+
+6. Test the module by running 'aptest' as root. The outpout will look like:
+
+# ./aptest
+NOTICE: VGA mapped [0xa0000 ,size=4096) to addr=0x10073000...
+
+DONE displaying memory contents (80 bytes)
+UNMAPPING [0xa0000 ,size=4096) to addr=0x10073000... and closing...DONE.
+Exiting successful...
+
+7. If you're running XFree86 3.1 or higher, just make sure that
+ HasNetBSDApertureDriver is set to YES in xf86site.def before building
+ your server. The netBSD binary distribution has the aperture driver
+ code enabled.
+
+Bug reports, comments, suggestions can be sent to matthieu@laas.fr
+
+--Matthieu Herrb
+
+----------------------------------------------------------------------
+
+ Copyright (c) 1994 The XFree86 Project Inc.
+
--- /dev/null
+/* $OpenBSD: aperture.c,v 1.1 1996/03/05 11:25:29 mickey Exp $ */
+
+/*
+ * Copyright 1994 the XFree86 Project Inc.
+ */
+
+/*
+ * linear framebuffer aperture driver for NetBSD
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/errno.h>
+
+#define VGA_START 0xA0000
+#define VGA_END 0xBFFFF
+
+/* open counter */
+static int ap_open_count = 0;
+
+/*
+ * Open the device
+ */
+int
+apopen(dev_t dev, int oflags, int devtype, struct proc *p)
+{
+ struct pcred *pc = p->p_cred;
+
+ if (suser(p->p_ucred, &p->p_acflag) != 0) {
+ return(EPERM);
+ }
+ /* authorize only one simultaneous open() */
+ if (ap_open_count > 0) {
+ return(EPERM);
+ }
+ ap_open_count++;
+
+ return(0);
+}
+
+/*
+ * Close the device
+ */
+int
+apclose(dev_t dev, int cflags, int devtype, struct proc *p)
+{
+
+ ap_open_count--;
+ return(0);
+}
+
+/*
+ * mmap() physical memory sections
+ *
+ * allow only section in the vga framebuffer and above main memory
+ * to be mapped
+ */
+int
+apmmap(dev_t dev, int offset, int length)
+{
+
+#ifdef AP_DEBUG
+ printf("apmmap: addr 0x%x\n", offset);
+#endif
+ if ((minor(dev) == 0)
+ && (offset >= VGA_START && offset <= VGA_END
+ || (unsigned)offset > (unsigned)ctob(physmem))) {
+ return i386_btop(offset);
+ } else {
+ return(-1);
+ }
+}
+
--- /dev/null
+#! /bin/sh
+# $OpenBSD: apinstall,v 1.1 1996/03/05 11:25:31 mickey Exp $
+#
+# Postinstall script for NetBSD Aperture Driver
+#
+# Copyright (C) 1994 The XFree86 Project Inc.
+#
+if [ $# -ne 3 ]; then
+ echo "$0: should be called by modload(8) with 3 arguments"
+ exit 1
+fi
+
+echo "Major device number: $3"
+rm -f /dev/xf86
+mknod /dev/xf86 c $3 0
+exit 0
--- /dev/null
+# $OpenBSD: Makefile,v 1.1 1996/03/05 11:25:42 mickey Exp $
+
+PROG= aptest
+NOMAN= noman
+
+.include <bsd.prog.mk>
--- /dev/null
+/* $OpenBSD: aptest.c,v 1.1 1996/03/05 11:25:46 mickey Exp $ */
+/*
+ * Copyright 1994 Doug Anson, danson@lgc.com & David Holland, davidh@use.com
+ *
+ * Author: Doug Anson (danson@lgc.com)
+ * Date : 2/21/94
+ * Modifed: David Holland (davidh@use.com)
+ * Log:
+ * DWH - Changed names/added comments 2/23/94
+ * DWH - Removed annoying delays. 2/23/94
+ *
+ * This program test the fb aperture driver by 'cheating'
+ * it uses the aperture driver to access/read the main
+ * system BIOS header
+ *
+ * Copyright notice:
+ * 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 Doug Anson, and David Holland be used in
+ * advertising or publicity pertaining to distribution of the software
+ * Doug Anson, and David Holland make no * representations about the
+ * suitability of this software for any purpose.
+ * It is provided "as is" without express or implied warranty.
+ *
+ * Disclaimer:
+ * DOUG ANSON, AND DAVID HOLLAND DISCLAIMS ALL WARRIENTS WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, AND FITNESS,
+ * IN NO EVENT SHALL DOUG ANSON, OR DAVID HOLLAND BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * USAGE OF THIS SOFTWARE.
+ */
+
+/*
+ * linear framebuffer aperture driver test program
+ */
+
+/*
+ * Id
+ */
+
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#if !defined(sun)
+extern void exit(int);
+extern caddr_t mmap();
+extern int close();
+extern int munmap();
+#endif
+
+/* framebuffer access defines */
+#define AP_DEV "/dev/xf86" /* framebuffer apperture device */
+#define PADDR 0xa0000 /* offset from fbmem base */
+#define BUF_LENGTH 0x1000 /* length in bytes -- ignored */
+
+/* debug testing defines */
+#define START_INDEX 0 /* display starting index(>=0)*/
+#define STOP_INDEX 80 /* display stopping index */
+#define INCR 1 /* display increment */
+
+/* main program */
+int main(int argc,char **argv)
+{
+ caddr_t addr = (caddr_t)0;
+ int fb_dev;
+ long start = START_INDEX;
+ long stop = STOP_INDEX;
+ int i;
+
+ /* open the framebuffer device */
+ fb_dev = open (AP_DEV,O_RDWR);
+ if (fb_dev < 0)
+ {
+ /* failed to open framebuffer driver */
+ printf("ERROR: failed to open %s\n",AP_DEV);
+ perror("ERROR: open()");
+ exit(1);
+ }
+
+ /* memory map the framebuffer */
+ addr = (caddr_t)mmap((caddr_t)0,BUF_LENGTH,PROT_READ|PROT_WRITE,MAP_SHARED,
+ fb_dev,(off_t)PADDR);
+ if (addr == (caddr_t)-1)
+ {
+ /* failed to memory map framebuffer driver */
+ printf("ERROR: failed to mmap [0x%x ,size=%d bytes)\n",
+ PADDR,BUF_LENGTH);
+ perror("ERROR: mmap()");
+ close(fb_dev);
+ exit(1);
+ }
+ else
+ {
+ /* frame buffer mapped */
+ close(fb_dev);
+ printf("NOTICE: BIOS mapped [0x%x ,size=%d) to addr=0x%x...\n",
+ PADDR,BUF_LENGTH,(int)addr);
+
+ /* display the buffer */
+ for(i=start;i<stop;i=i+INCR)
+ printf("%c",addr[i]);
+ /* printf("addr[%d]=%c\n",i,addr[i]);
+ */
+ printf("\nDONE displaying memory contents (%d bytes)\n",stop);
+
+ /* unmap and close */
+ printf("UNMAPPING [0x%x ,size=%d) to addr=0x%x... and closing...",
+ PADDR,BUF_LENGTH,(int)addr);
+ munmap(addr,BUF_LENGTH);
+ printf("DONE.\n");
+ printf("Exiting successful...\n");
+ exit(0);
+ }
+ return 1;
+}
--- /dev/null
+/* $OpenBSD: lkm.c,v 1.1 1996/03/05 11:25:34 mickey Exp $ */
+/*
+ * Copyright (c) 1994 The XFree86 Project Inc.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/exec.h>
+#include <sys/lkm.h>
+#include <errno.h>
+#include "version.h"
+
+extern int apopen(dev_t dev, int oflags, int devtype, struct proc *p);
+extern int apclose(dev_t dev, int fflags, int devtype, struct proc *p);
+extern int apmmap(dev_t dev, int offset, int length);
+
+static struct cdevsw newdev = {
+ apopen, apclose,
+ (dev_type_read((*))) enodev, (dev_type_write((*))) enodev,
+ (dev_type_ioctl((*))) enodev,
+ (dev_type_stop((*))) enodev,
+ 0, seltrue, (dev_type_mmap((*))) apmmap, 0};
+
+MOD_DEV("ap", LM_DT_CHAR, -1, &newdev)
+
+static int
+ap_load(struct lkm_table *lkmtp, int cmd)
+{
+ if (cmd == LKM_E_LOAD) {
+ printf("\n Aperture driver for XFree86 version %s.%s\n",
+ ap_major_version, ap_minor_version);
+ }
+ return(0);
+}
+
+int
+ap(struct lkm_table *lkmtp, int cmd, int ver)
+{
+ DISPATCH(lkmtp, cmd, ver, ap_load, lkm_nofunc, lkm_nofunc)
+}
+
--- /dev/null
+/* $OpenBSD: version.c,v 1.1 1996/03/05 11:25:36 mickey Exp $ */
+/*
+ * Loadable Kernel Module for XFree86 Aperture driver
+ *
+ * Copyright (c) 1994 The XFree86 Project Inc.
+ */
+char *ap_major_version = "1";
+char *ap_minor_version = "4";
--- /dev/null
+/* $OpenBSD: version.h,v 1.1 1996/03/05 11:25:38 mickey Exp $ */
+/*
+ * Loadable Kernel Module for XFree86 Aperture driver
+ *
+ * Copyright (c) 1994 Matthieu Herrb
+ */
+extern char *ap_major_version;
+extern char *ap_minor_version;
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