1 files changed, 42 insertions, 0 deletions
diff --git a/vidix/sysdep/pci_svr4.c b/vidix/sysdep/pci_svr4.c
new file mode 100644
index 0000000000..bcce5c901d
--- /dev/null
+++ b/vidix/sysdep/pci_svr4.c
@@ -0,0 +1,42 @@
+/*
+   This file is based on:
+   $XFree86: xc/programs/Xserver/hw/xfree86/etc/scanpci.c,v 3.34.2.17 1998/11/10 11:55:40 dawes Exp $
+   Modified for readability by Nick Kurshev
+*/
+#include <sys/types.h>
+#include <sys/proc.h>
+#include <sys/tss.h>
+#if defined(NCR)
+#define __STDC
+#include <sys/sysi86.h>
+#undef __STDC
+#else
+#include <sys/sysi86.h>
+#endif
+
+#if defined(sun)
+# ifndef __EXTENSIONS__
+# define __EXTENSIONS__
+# endif
+# include <sys/psw.h>
+#endif
+
+static __inline__ int enable_os_io(void)
+{
+#if defined(SI86IOPL)
+    sysi86(SI86IOPL, 3);
+#else
+    sysi86(SI86V86, V86SC_IOPL, PS_IOPL);
+#endif
+    return(0);
+}
+
+static __inline__ int disable_os_io(void)
+{
+#if defined(SI86IOPL)
+    sysi86(SI86IOPL, 0);
+#else
+    sysi86(SI86V86, V86SC_IOPL, 0);
+#endif
+    return(0);
+}