$OpenBSD: patch-src_DAPA_C,v 1.2 2010/05/22 14:27:21 espie Exp $
--- src/DAPA.C.orig	Tue Dec 28 15:39:38 2004
+++ src/DAPA.C	Sat May 22 16:17:55 2010
@@ -84,6 +84,35 @@
 #define ioport_enable(port, num)  i386_set_ioperm(port, num, 1)
 #define ioport_disable(port, num) i386_set_ioperm(port, num, 0)
 
+#elif defined(__OpenBSD__) && defined(__i386__)
+
+#include <sys/types.h>
+#include <machine/sysarch.h>
+#include <i386/pio.h>
+
+#define IOPAGES 32
+
+#define ioport_read(port)         inb(port)
+#define ioport_write(port, val)   outb(port, val)
+#define ioport_enable(port, num)  set_ioperm_obsd(port, num, 1)
+#define ioport_disable(port, num) set_ioperm_obsd(port, num, 0)
+
+int
+set_ioperm_obsd(int parport_port, int num, int flag)
+{
+  int i=0;
+  u_long iopermtable[IOPAGES] = {};
+
+  /* get current i/o permission table */
+  i386_get_ioperm(iopermtable);
+
+  /* request access to desired i/o port */
+  for (i=0; i<num; i++)
+     iopermtable[parport_port / IOPAGES] &= ~(flag << parport_port % IOPAGES + i);
+
+  return i386_set_ioperm(iopermtable);
+}
+
 #else
 
 /* Direct I/O port access not supported - ppdev/ppi kernel driver