1 files changed, 54 insertions, 0 deletions
diff --git a/lib/i386-io-openbsd.h b/lib/i386-io-openbsd.h
new file mode 100644
index 0000000..8a9b4a4
--- /dev/null
+++ b/lib/i386-io-openbsd.h
@@ -0,0 +1,54 @@
+/*
+ *	The PCI Library -- Access to i386 I/O ports on OpenBSD
+ *
+ *	Copyright (c) 2023 Grant Pannell <grant@pannell.net.au>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#include <sys/types.h>
+#include <machine/sysarch.h>
+#include <machine/pio.h>
+
+#include "i386-io-access.h"
+
+#if defined(__amd64__)
+  #define obsd_iopl amd64_iopl
+#else
+  #define obsd_iopl i386_iopl
+#endif
+
+static int iopl_enabled;
+
+static int
+intel_setup_io(struct pci_access *a UNUSED)
+{
+  if (iopl_enabled)
+    return 1;
+
+  if (obsd_iopl(3) < 0)
+    {
+      return 0;
+    }
+
+  iopl_enabled = 1;
+  return 1;
+}
+
+static inline void
+intel_cleanup_io(struct pci_access *a UNUSED)
+{
+  if (iopl_enabled)
+    {
+      obsd_iopl(0);
+      iopl_enabled = 0;
+    }
+}
+
+static inline void intel_io_lock(void)
+{
+}
+
+static inline void intel_io_unlock(void)
+{
+}