intel_reg: support platforms without sys/io.h

Based on an idea from Jani Nikula.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Derek Morton <derek.j.morton@intel.com>
Signed-off-by: Thomas Wood <thomas.wood@intel.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/tools/intel_reg.c b/tools/intel_reg.c
index 090cc256..190aa5b3 100644
--- a/tools/intel_reg.c
+++ b/tools/intel_reg.c
@@ -28,7 +28,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/io.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ -38,6 +37,22 @@
 
 #include "intel_reg_spec.h"
 
+
+#ifdef HAVE_SYS_IO_H
+#include <sys/io.h>
+#else
+
+static inline int _not_supported(void)
+{
+       fprintf(stderr, "portio-vga not supported\n");
+       exit(EXIT_FAILURE);
+}
+#define inb(port)              _not_supported()
+#define outb(value, port)      _not_supported()
+#define iopl(level)
+
+#endif /* HAVE_SYS_IO_H */
+
 struct config {
 	struct pci_device *pci_dev;
 	char *mmiofile;