diff -r d9b9bc794d10 -r ed5ac2e83495 master/ioctl.h
--- a/master/ioctl.h	Thu Jun 05 14:33:36 2008 +0000
+++ b/master/ioctl.h	Thu Jun 05 15:39:15 2008 +0000
@@ -44,7 +44,7 @@
 /*****************************************************************************/
 
 enum {
-    EC_IOCTL_SLAVE_COUNT,
+    EC_IOCTL_MASTER,
     EC_IOCTL_SLAVE,
     EC_IOCTL_SYNC,
     EC_IOCTL_PDO,
@@ -53,11 +53,24 @@
 	EC_IOCTL_DOMAIN,
 	EC_IOCTL_DOMAIN_FMMU,
 	EC_IOCTL_DATA,
-    EC_IOCTL_DEBUG_LEVEL,
+    EC_IOCTL_SET_DEBUG,
 };
 
 /*****************************************************************************/
 
+typedef struct {
+    unsigned int slave_count;
+    uint8_t mode;
+    struct {
+        uint8_t address[6];
+        uint8_t attached;
+        unsigned int tx_count;
+        unsigned int rx_count;
+    } devices[2];
+} ec_ioctl_master_t;
+
+/*****************************************************************************/
+
 #define EC_IOCTL_SLAVE_NAME_SIZE 114
 
 typedef struct {