diff -r 5ef9d5b14879 -r 5ef3197e5e1f master/ioctl.h
--- a/master/ioctl.h	Tue Feb 05 15:24:45 2013 +0100
+++ b/master/ioctl.h	Tue Feb 05 16:45:34 2013 +0100
@@ -56,7 +56,7 @@
  *
  * Increment this when changing the ioctl interface!
  */
-#define EC_IOCTL_VERSION_MAGIC 26
+#define EC_IOCTL_VERSION_MAGIC 27
 
 // Command-line tool
 #define EC_IOCTL_MODULE                EC_IOR(0x00, ec_ioctl_module_t)
@@ -117,40 +117,41 @@
 #define EC_IOCTL_SC_ADD_ENTRY          EC_IOW(0x33, ec_ioctl_add_pdo_entry_t)
 #define EC_IOCTL_SC_CLEAR_ENTRIES      EC_IOW(0x34, ec_ioctl_config_pdo_t)
 #define EC_IOCTL_SC_REG_PDO_ENTRY     EC_IOWR(0x35, ec_ioctl_reg_pdo_entry_t)
-#define EC_IOCTL_SC_DC                 EC_IOW(0x36, ec_ioctl_config_t)
-#define EC_IOCTL_SC_SDO                EC_IOW(0x37, ec_ioctl_sc_sdo_t)
-#define EC_IOCTL_SC_EMERG_SIZE         EC_IOW(0x38, ec_ioctl_sc_emerg_t)
-#define EC_IOCTL_SC_EMERG_POP         EC_IOWR(0x39, ec_ioctl_sc_emerg_t)
-#define EC_IOCTL_SC_EMERG_CLEAR        EC_IOW(0x3a, ec_ioctl_sc_emerg_t)
-#define EC_IOCTL_SC_EMERG_OVERRUNS    EC_IOWR(0x3b, ec_ioctl_sc_emerg_t)
-#define EC_IOCTL_SC_SDO_REQUEST       EC_IOWR(0x3c, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SC_REG_REQUEST       EC_IOWR(0x3d, ec_ioctl_reg_request_t)
-#define EC_IOCTL_SC_VOE               EC_IOWR(0x3e, ec_ioctl_voe_t)
-#define EC_IOCTL_SC_STATE             EC_IOWR(0x3f, ec_ioctl_sc_state_t)
-#define EC_IOCTL_SC_IDN                EC_IOW(0x40, ec_ioctl_sc_idn_t)
-#define EC_IOCTL_DOMAIN_SIZE            EC_IO(0x41)
-#define EC_IOCTL_DOMAIN_OFFSET          EC_IO(0x42)
-#define EC_IOCTL_DOMAIN_PROCESS         EC_IO(0x43)
-#define EC_IOCTL_DOMAIN_QUEUE           EC_IO(0x44)
-#define EC_IOCTL_DOMAIN_STATE         EC_IOWR(0x45, ec_ioctl_domain_state_t)
-#define EC_IOCTL_SDO_REQUEST_INDEX    EC_IOWR(0x46, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SDO_REQUEST_TIMEOUT  EC_IOWR(0x47, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SDO_REQUEST_STATE    EC_IOWR(0x48, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SDO_REQUEST_READ     EC_IOWR(0x49, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SDO_REQUEST_WRITE    EC_IOWR(0x4a, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SDO_REQUEST_DATA     EC_IOWR(0x4b, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_REG_REQUEST_DATA     EC_IOWR(0x4c, ec_ioctl_reg_request_t)
-#define EC_IOCTL_REG_REQUEST_STATE    EC_IOWR(0x4d, ec_ioctl_reg_request_t)
-#define EC_IOCTL_REG_REQUEST_WRITE    EC_IOWR(0x4e, ec_ioctl_reg_request_t)
-#define EC_IOCTL_REG_REQUEST_READ     EC_IOWR(0x4f, ec_ioctl_reg_request_t)
-#define EC_IOCTL_VOE_SEND_HEADER       EC_IOW(0x50, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_REC_HEADER       EC_IOWR(0x51, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_READ              EC_IOW(0x52, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_READ_NOSYNC       EC_IOW(0x53, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_WRITE            EC_IOWR(0x54, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_EXEC             EC_IOWR(0x55, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_DATA             EC_IOWR(0x56, ec_ioctl_voe_t)
-#define EC_IOCTL_SET_SEND_INTERVAL     EC_IOW(0x57, size_t)
+#define EC_IOCTL_SC_REG_PDO_POS       EC_IOWR(0x36, ec_ioctl_reg_pdo_pos_t)
+#define EC_IOCTL_SC_DC                 EC_IOW(0x37, ec_ioctl_config_t)
+#define EC_IOCTL_SC_SDO                EC_IOW(0x38, ec_ioctl_sc_sdo_t)
+#define EC_IOCTL_SC_EMERG_SIZE         EC_IOW(0x39, ec_ioctl_sc_emerg_t)
+#define EC_IOCTL_SC_EMERG_POP         EC_IOWR(0x3a, ec_ioctl_sc_emerg_t)
+#define EC_IOCTL_SC_EMERG_CLEAR        EC_IOW(0x3b, ec_ioctl_sc_emerg_t)
+#define EC_IOCTL_SC_EMERG_OVERRUNS    EC_IOWR(0x3c, ec_ioctl_sc_emerg_t)
+#define EC_IOCTL_SC_SDO_REQUEST       EC_IOWR(0x3d, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SC_REG_REQUEST       EC_IOWR(0x3e, ec_ioctl_reg_request_t)
+#define EC_IOCTL_SC_VOE               EC_IOWR(0x3f, ec_ioctl_voe_t)
+#define EC_IOCTL_SC_STATE             EC_IOWR(0x40, ec_ioctl_sc_state_t)
+#define EC_IOCTL_SC_IDN                EC_IOW(0x41, ec_ioctl_sc_idn_t)
+#define EC_IOCTL_DOMAIN_SIZE            EC_IO(0x42)
+#define EC_IOCTL_DOMAIN_OFFSET          EC_IO(0x43)
+#define EC_IOCTL_DOMAIN_PROCESS         EC_IO(0x44)
+#define EC_IOCTL_DOMAIN_QUEUE           EC_IO(0x45)
+#define EC_IOCTL_DOMAIN_STATE         EC_IOWR(0x46, ec_ioctl_domain_state_t)
+#define EC_IOCTL_SDO_REQUEST_INDEX    EC_IOWR(0x47, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SDO_REQUEST_TIMEOUT  EC_IOWR(0x48, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SDO_REQUEST_STATE    EC_IOWR(0x49, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SDO_REQUEST_READ     EC_IOWR(0x4a, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SDO_REQUEST_WRITE    EC_IOWR(0x4b, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SDO_REQUEST_DATA     EC_IOWR(0x4c, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_REG_REQUEST_DATA     EC_IOWR(0x4d, ec_ioctl_reg_request_t)
+#define EC_IOCTL_REG_REQUEST_STATE    EC_IOWR(0x4e, ec_ioctl_reg_request_t)
+#define EC_IOCTL_REG_REQUEST_WRITE    EC_IOWR(0x4f, ec_ioctl_reg_request_t)
+#define EC_IOCTL_REG_REQUEST_READ     EC_IOWR(0x50, ec_ioctl_reg_request_t)
+#define EC_IOCTL_VOE_SEND_HEADER       EC_IOW(0x51, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_REC_HEADER       EC_IOWR(0x52, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_READ              EC_IOW(0x53, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_READ_NOSYNC       EC_IOW(0x54, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_WRITE            EC_IOWR(0x55, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_EXEC             EC_IOWR(0x56, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_DATA             EC_IOWR(0x57, ec_ioctl_voe_t)
+#define EC_IOCTL_SET_SEND_INTERVAL     EC_IOW(0x58, size_t)
 
 /*****************************************************************************/
 
@@ -623,6 +624,20 @@
 typedef struct {
     // inputs
     uint32_t config_index;
+    uint32_t sync_index;
+    uint32_t pdo_pos;
+    uint32_t entry_pos;
+    uint32_t domain_index;
+
+    // outputs
+    unsigned int bit_position;
+} ec_ioctl_reg_pdo_pos_t;
+
+/*****************************************************************************/
+
+typedef struct {
+    // inputs
+    uint32_t config_index;
     uint16_t index;
     uint8_t subindex;
     const uint8_t *data;