Implemented reading Sercos-over-EtherCAT services. To be continued...
authorFlorian Pose <fp@igh-essen.com>
Mon, 01 Mar 2010 18:33:42 +0100
changeset 1831 1875b9fea0ba
parent 1830 ef09f0ea0c4c
child 1832 fb6a307daf31
Implemented reading Sercos-over-EtherCAT services. To be continued...
master/Kbuild.in
master/Makefile.am
master/cdev.c
master/fsm_coe.c
master/fsm_master.c
master/fsm_master.h
master/fsm_slave.c
master/fsm_slave.h
master/fsm_soe.c
master/fsm_soe.h
master/ioctl.h
master/master.c
master/sdo_request.c
master/slave.c
master/slave.h
master/soe_request.c
master/soe_request.h
tool/CommandSoeRead.cpp
tool/CommandSoeRead.h
tool/Makefile.am
tool/MasterDevice.cpp
tool/MasterDevice.h
tool/main.cpp
--- a/master/Kbuild.in	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/Kbuild.in	Mon Mar 01 18:33:42 2010 +0100
@@ -44,12 +44,13 @@
 	fsm_coe.o \
 	fsm_foe.o \
 	fsm_master.o \
-	fsm_slave.o \
 	fsm_pdo.o \
 	fsm_pdo_entry.o \
 	fsm_sii.o \
+	fsm_slave.o \
 	fsm_slave_config.o \
 	fsm_slave_scan.o \
+	fsm_soe.o \
 	mailbox.o \
 	master.o \
 	module.o \
@@ -61,6 +62,7 @@
 	sdo_request.o \
 	slave.o \
 	slave_config.o \
+	soe_request.o \
 	sync.o \
 	sync_config.o \
 	voe_handler.o
--- a/master/Makefile.am	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/Makefile.am	Mon Mar 01 18:33:42 2010 +0100
@@ -43,12 +43,13 @@
 	fsm_coe.c fsm_coe.h \
 	fsm_foe.c fsm_foe.h \
 	fsm_master.c fsm_master.h \
-	fsm_slave.c fsm_slave.h \
 	fsm_pdo.c fsm_pdo.h \
 	fsm_pdo_entry.c fsm_pdo_entry.h \
 	fsm_sii.c fsm_sii.h \
+	fsm_slave.c fsm_slave.h \
 	fsm_slave_config.c fsm_slave_config.h \
 	fsm_slave_scan.c fsm_slave_scan.h \
+	fsm_soe.c fsm_soe.h \
 	globals.h \
 	ioctl.h \
 	mailbox.c mailbox.h \
@@ -62,6 +63,7 @@
 	sdo_request.c sdo_request.h \
 	slave.c slave.h \
 	slave_config.c slave_config.h \
+	soe_request.c soe_request.h \
 	sync.c sync.h \
 	sync_config.c sync_config.h \
 	voe_handler.c voe_handler.h
--- a/master/cdev.c	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/cdev.c	Mon Mar 01 18:33:42 2010 +0100
@@ -284,10 +284,12 @@
         data.ports[i].desc = slave->ports[i].desc;
         data.ports[i].link.link_up = slave->ports[i].link.link_up;
         data.ports[i].link.loop_closed = slave->ports[i].link.loop_closed;
-        data.ports[i].link.signal_detected = slave->ports[i].link.signal_detected;
+        data.ports[i].link.signal_detected =
+            slave->ports[i].link.signal_detected;
         data.ports[i].receive_time = slave->ports[i].receive_time;
         if (slave->ports[i].next_slave) {
-            data.ports[i].next_slave = slave->ports[i].next_slave->ring_position;
+            data.ports[i].next_slave =
+                slave->ports[i].next_slave->ring_position;
         } else {
             data.ports[i].next_slave = 0xffff;
         }
@@ -825,7 +827,8 @@
     }
 
     if (master->debug_level)
-        EC_DBG("Schedule SDO upload request for slave %u\n",request.slave->ring_position);
+        EC_DBG("Schedule SDO upload request for slave %u\n",
+                request.slave->ring_position);
     // schedule request.
     list_add_tail(&request.list, &request.slave->slave_sdo_requests);
 
@@ -847,10 +850,12 @@
     }
 
     // wait until master FSM has finished processing
-    wait_event(request.slave->sdo_queue, request.req.state != EC_INT_REQUEST_BUSY);
+    wait_event(request.slave->sdo_queue,
+            request.req.state != EC_INT_REQUEST_BUSY);
 
     if (master->debug_level)
-        EC_DBG("Scheduled SDO upload request for slave %u done\n",request.slave->ring_position);
+        EC_DBG("Scheduled SDO upload request for slave %u done\n",
+                request.slave->ring_position);
 
     data.abort_code = request.req.abort_code;
 
@@ -931,7 +936,8 @@
     }
     
     if (master->debug_level)
-        EC_DBG("Schedule SDO download request for slave %u\n",request.slave->ring_position);
+        EC_DBG("Schedule SDO download request for slave %u\n",
+                request.slave->ring_position);
     // schedule request.
     list_add_tail(&request.list, &request.slave->slave_sdo_requests);
 
@@ -953,10 +959,12 @@
     }
 
     // wait until master FSM has finished processing
-    wait_event(request.slave->sdo_queue, request.req.state != EC_INT_REQUEST_BUSY);
+    wait_event(request.slave->sdo_queue,
+            request.req.state != EC_INT_REQUEST_BUSY);
 
     if (master->debug_level)
-        EC_DBG("Scheduled SDO download request for slave %u done\n",request.slave->ring_position);
+        EC_DBG("Scheduled SDO download request for slave %u done\n",
+                request.slave->ring_position);
 
     data.abort_code = request.req.abort_code;
 
@@ -1120,7 +1128,8 @@
         return 0;
 
     if (!(contents = kmalloc(data.length, GFP_KERNEL))) {
-        EC_ERR("Failed to allocate %u bytes for register data.\n", data.length);
+        EC_ERR("Failed to allocate %u bytes for register data.\n",
+                data.length);
         return -ENOMEM;
     }
 
@@ -1197,7 +1206,8 @@
         return 0;
 
     if (!(contents = kmalloc(data.length, GFP_KERNEL))) {
-        EC_ERR("Failed to allocate %u bytes for register data.\n", data.length);
+        EC_ERR("Failed to allocate %u bytes for register data.\n",
+                data.length);
         return -ENOMEM;
     }
 
@@ -2240,7 +2250,8 @@
     up(&master->master_sem); // FIXME
 
     if (data.complete_access) {
-        ret = ecrt_slave_config_complete_sdo(sc, data.index, sdo_data, data.size);
+        ret = ecrt_slave_config_complete_sdo(sc,
+                data.index, sdo_data, data.size);
     } else {
         ret = ecrt_slave_config_sdo(sc, data.index, data.subindex, sdo_data,
                 data.size);
@@ -3102,7 +3113,8 @@
     }
 
     // wait until master FSM has finished processing
-    wait_event(request.slave->foe_queue, request.req.state != EC_INT_REQUEST_BUSY);
+    wait_event(request.slave->foe_queue,
+            request.req.state != EC_INT_REQUEST_BUSY);
 
     data.result = request.req.result;
     data.error_code = request.req.error_code;
@@ -3212,7 +3224,8 @@
     }
 
     // wait until master FSM has finished processing
-    wait_event(request.slave->foe_queue, request.req.state != EC_INT_REQUEST_BUSY);
+    wait_event(request.slave->foe_queue,
+            request.req.state != EC_INT_REQUEST_BUSY);
 
     data.result = request.req.result;
     data.error_code = request.req.error_code;
@@ -3226,7 +3239,195 @@
     ec_foe_request_clear(&request.req);
 
     if (master->debug_level) {
-        printk("Finished FoE writing.\n");
+        EC_DBG("Finished FoE writing.\n");
+    }
+
+    return retval;
+}
+
+/*****************************************************************************/
+
+/** Read an SoE IDN.
+ */
+int ec_cdev_ioctl_slave_soe_read(
+        ec_master_t *master, /**< EtherCAT master. */
+        unsigned long arg /**< ioctl() argument. */
+        )
+{
+    ec_ioctl_slave_soe_t data;
+    ec_master_soe_request_t request;
+    int retval;
+
+    if (copy_from_user(&data, (void __user *) arg, sizeof(data))) {
+        return -EFAULT;
+    }
+
+    ec_soe_request_init(&request.req);
+    ec_soe_request_set_idn(&request.req, data.idn);
+    ec_soe_request_read(&request.req);
+
+    if (down_interruptible(&master->master_sem))
+        return -EINTR;
+
+    if (!(request.slave = ec_master_find_slave(
+                    master, 0, data.slave_position))) {
+        up(&master->master_sem);
+        ec_soe_request_clear(&request.req);
+        EC_ERR("Slave %u does not exist!\n", data.slave_position);
+        return -EINVAL;
+    }
+
+    // schedule request.
+    list_add_tail(&request.list, &request.slave->soe_requests);
+
+    up(&master->master_sem);
+
+    if (master->debug_level) {
+        EC_DBG("Scheduled SoE read request on slave %u.\n",
+                request.slave->ring_position);
+    }
+
+    // wait for processing through FSM
+    if (wait_event_interruptible(request.slave->soe_queue,
+                request.req.state != EC_INT_REQUEST_QUEUED)) {
+        // interrupted by signal
+        down(&master->master_sem);
+        if (request.req.state == EC_INT_REQUEST_QUEUED) {
+            list_del(&request.list);
+            up(&master->master_sem);
+            ec_soe_request_clear(&request.req);
+            return -EINTR;
+        }
+        // request already processing: interrupt not possible.
+        up(&master->master_sem);
+    }
+
+    // wait until master FSM has finished processing
+    wait_event(request.slave->soe_queue,
+            request.req.state != EC_INT_REQUEST_BUSY);
+
+    data.error_code = request.req.error_code;
+
+    if (master->debug_level) {
+        EC_DBG("Read %zd bytes via SoE.\n", request.req.data_size);
+    }
+
+    if (request.req.state != EC_INT_REQUEST_SUCCESS) {
+        data.data_size = 0;
+        retval = -EIO;
+    } else {
+        if (request.req.data_size > data.mem_size) {
+            EC_ERR("Buffer too small.\n");
+            ec_soe_request_clear(&request.req);
+            return -EOVERFLOW;
+        }
+        data.data_size = request.req.data_size;
+        if (copy_to_user((void __user *) data.data,
+                    request.req.data, data.data_size)) {
+            ec_soe_request_clear(&request.req);
+            return -EFAULT;
+        }
+        retval = 0;
+    }
+
+    if (__copy_to_user((void __user *) arg, &data, sizeof(data))) {
+        retval = -EFAULT;
+    }
+
+    if (master->debug_level)
+        EC_DBG("SoE read request finished on slave %u.\n",
+                request.slave->ring_position);
+
+    ec_soe_request_clear(&request.req);
+
+    return retval;
+}
+
+/*****************************************************************************/
+
+/** Write an IDN to a slave via SoE.
+ */
+int ec_cdev_ioctl_slave_soe_write(
+        ec_master_t *master, /**< EtherCAT master. */
+        unsigned long arg /**< ioctl() argument. */
+        )
+{
+    ec_ioctl_slave_soe_t data;
+    ec_master_soe_request_t request;
+    int retval;
+
+    if (copy_from_user(&data, (void __user *) arg, sizeof(data))) {
+        return -EFAULT;
+    }
+
+    INIT_LIST_HEAD(&request.list);
+
+    ec_soe_request_init(&request.req);
+    ec_soe_request_set_idn(&request.req, data.idn);
+
+    if (ec_soe_request_alloc(&request.req, data.mem_size)) {
+        ec_soe_request_clear(&request.req);
+        return -ENOMEM;
+    }
+    if (copy_from_user(request.req.data,
+                (void __user *) data.data, data.mem_size)) {
+        ec_soe_request_clear(&request.req);
+        return -EFAULT;
+    }
+    request.req.data_size = data.mem_size;
+    ec_soe_request_write(&request.req);
+
+    if (down_interruptible(&master->master_sem))
+        return -EINTR;
+
+    if (!(request.slave = ec_master_find_slave(
+                    master, 0, data.slave_position))) {
+        up(&master->master_sem);
+        EC_ERR("Slave %u does not exist!\n", data.slave_position);
+        ec_soe_request_clear(&request.req);
+        return -EINVAL;
+    }
+
+    if (master->debug_level) {
+        EC_DBG("Scheduling SoE write request.\n");
+    }
+
+    // schedule SoE write request.
+    list_add_tail(&request.list, &request.slave->soe_requests);
+
+    up(&master->master_sem);
+
+    // wait for processing through FSM
+    if (wait_event_interruptible(request.slave->soe_queue,
+                request.req.state != EC_INT_REQUEST_QUEUED)) {
+        // interrupted by signal
+        down(&master->master_sem);
+        if (request.req.state == EC_INT_REQUEST_QUEUED) {
+            // abort request
+            list_del(&request.list);
+            up(&master->master_sem);
+            ec_soe_request_clear(&request.req);
+            return -EINTR;
+        }
+        up(&master->master_sem);
+    }
+
+    // wait until master FSM has finished processing
+    wait_event(request.slave->soe_queue,
+            request.req.state != EC_INT_REQUEST_BUSY);
+
+    //data.result = request.req.result;
+
+    retval = request.req.state == EC_INT_REQUEST_SUCCESS ? 0 : -EIO;
+
+    if (__copy_to_user((void __user *) arg, &data, sizeof(data))) {
+        retval = -EFAULT;
+    }
+
+    ec_soe_request_clear(&request.req);
+
+    if (master->debug_level) {
+        EC_DBG("Finished SoE writing.\n");
     }
 
     return retval;
@@ -3354,6 +3555,12 @@
             if (!(filp->f_mode & FMODE_WRITE))
                 return -EPERM;
             return ec_cdev_ioctl_slave_foe_write(master, arg);
+        case EC_IOCTL_SLAVE_SOE_READ:
+            return ec_cdev_ioctl_slave_soe_read(master, arg);
+        case EC_IOCTL_SLAVE_SOE_WRITE:
+            if (!(filp->f_mode & FMODE_WRITE))
+                return -EPERM;
+            return ec_cdev_ioctl_slave_soe_write(master, arg);
         case EC_IOCTL_CONFIG:
             return ec_cdev_ioctl_config(master, arg);
         case EC_IOCTL_CONFIG_PDO:
--- a/master/fsm_coe.c	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/fsm_coe.c	Mon Mar 01 18:33:42 2010 +0100
@@ -1964,7 +1964,7 @@
 
         if (rec_size < 6 + fsm->complete_size) {
             fsm->state = ec_fsm_coe_error;
-            EC_ERR("Received currupted SDO expedited upload"
+            EC_ERR("Received corrupted SDO expedited upload"
                     " response (only %zu bytes)!\n", rec_size);
             ec_print_data(data, rec_size);
             return;
--- a/master/fsm_master.c	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/fsm_master.c	Mon Mar 01 18:33:42 2010 +0100
@@ -426,8 +426,8 @@
                 if (ec_sdo_request_timed_out(req)) {
                     req->state = EC_INT_REQUEST_FAILURE;
                     if (master->debug_level)
-                        EC_DBG("Internal SDO request for slave %u timed out...\n",
-                                slave->ring_position);
+						EC_DBG("Internal SDO request for slave %u"
+								" timed out...\n", slave->ring_position);
                     continue;
                 }
 
@@ -472,7 +472,7 @@
     if (ec_fsm_master_action_process_sdo(fsm))
         return;
 
-    // enable processing of SDO/FOE requests
+    // enable processing of requests
     for (slave = master->slaves;
             slave < master->slaves + master->slave_count;
             slave++) {
--- a/master/fsm_master.h	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/fsm_master.h	Mon Mar 01 18:33:42 2010 +0100
@@ -41,6 +41,7 @@
 #include "datagram.h"
 #include "foe_request.h"
 #include "sdo_request.h"
+#include "soe_request.h"
 #include "fsm_slave_config.h"
 #include "fsm_slave_scan.h"
 #include "fsm_pdo.h"
@@ -85,7 +86,7 @@
 
 /*****************************************************************************/
 
-/** FoE write request.
+/** FoE request.
  */
 typedef struct {
     struct list_head list; /**< List head. */
@@ -95,6 +96,16 @@
 
 /*****************************************************************************/
 
+/** SoE request.
+ */
+typedef struct {
+    struct list_head list; /**< List head. */
+    ec_slave_t *slave; /**< EtherCAT slave. */
+    ec_soe_request_t req; /**< SoE request. */
+} ec_master_soe_request_t;
+
+/*****************************************************************************/
+
 typedef struct ec_fsm_master ec_fsm_master_t; /**< \see ec_fsm_master */
 
 /** Finite state machine of an EtherCAT master.
--- a/master/fsm_slave.c	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/fsm_slave.c	Mon Mar 01 18:33:42 2010 +0100
@@ -44,10 +44,11 @@
 void ec_fsm_slave_state_idle(ec_fsm_slave_t *);
 void ec_fsm_slave_state_ready(ec_fsm_slave_t *);
 int ec_fsm_slave_action_process_sdo(ec_fsm_slave_t *);
+void ec_fsm_slave_state_sdo_request(ec_fsm_slave_t *);
 int ec_fsm_slave_action_process_foe(ec_fsm_slave_t *);
-void ec_fsm_slave_state_sdo_request(ec_fsm_slave_t *);
 void ec_fsm_slave_state_foe_request(ec_fsm_slave_t *);
-
+int ec_fsm_slave_action_process_soe(ec_fsm_slave_t *);
+void ec_fsm_slave_state_soe_request(ec_fsm_slave_t *);
 
 /*****************************************************************************/
 
@@ -71,6 +72,7 @@
     // init sub-state-machines
     ec_fsm_coe_init(&fsm->fsm_coe, fsm->datagram);
     ec_fsm_foe_init(&fsm->fsm_foe, fsm->datagram);
+    ec_fsm_soe_init(&fsm->fsm_soe, fsm->datagram);
 }
 
 /*****************************************************************************/
@@ -84,6 +86,7 @@
     // clear sub-state machines
     ec_fsm_coe_clear(&fsm->fsm_coe);
     ec_fsm_foe_clear(&fsm->fsm_foe);
+    ec_fsm_soe_clear(&fsm->fsm_soe);
 }
 
 /*****************************************************************************/
@@ -107,11 +110,9 @@
     return;
 }
 
-
 /*****************************************************************************/
 
 /** Sets the current state of the state machine to READY
- *
  */
 void ec_fsm_slave_ready(
         ec_fsm_slave_t *fsm /**< Slave state machine. */
@@ -119,23 +120,18 @@
 {
     if (fsm->state == ec_fsm_slave_state_idle) {
         if (fsm->slave->master->debug_level) {
-            EC_DBG("Slave %u ready for SDO/FOE.\n",
+            EC_DBG("Slave %u ready for requests.\n",
                     fsm->slave->ring_position);
         }
         fsm->state = ec_fsm_slave_state_ready;
     }
-    return;
 }
 
 /******************************************************************************
  * Slave state machine
  *****************************************************************************/
 
-/*****************************************************************************/
-
 /** Slave state: IDLE.
- *
- *
  */
 void ec_fsm_slave_state_idle(
         ec_fsm_slave_t *fsm /**< Slave state machine. */
@@ -148,8 +144,6 @@
 /*****************************************************************************/
 
 /** Slave state: READY.
- *
- *
  */
 void ec_fsm_slave_state_ready(
         ec_fsm_slave_t *fsm /**< Slave state machine. */
@@ -159,9 +153,13 @@
     if (ec_fsm_slave_action_process_sdo(fsm))
         return;
 
-    // Check for pending FOE requests
+    // Check for pending FoE requests
     if (ec_fsm_slave_action_process_foe(fsm))
         return;
+
+    // Check for pending SoE requests
+    if (ec_fsm_slave_action_process_soe(fsm))
+        return;
 }
 
 /*****************************************************************************/
@@ -220,51 +218,6 @@
     return 0;
 }
 
-
-/*****************************************************************************/
-
-/** Check for pending FOE requests and process one.
- *
- * \return non-zero, if an FOE request is processed.
- */
-int ec_fsm_slave_action_process_foe(
-        ec_fsm_slave_t *fsm /**< Slave state machine. */
-        )
-{
-    ec_slave_t *slave = fsm->slave;
-    ec_master_t *master = slave->master;
-    ec_master_foe_request_t *request, *next;
-
-    // search the first request to be processed
-    list_for_each_entry_safe(request, next, &slave->foe_requests, list) {
-        if (slave->current_state & EC_SLAVE_STATE_ACK_ERR) {
-            EC_WARN("Aborting FOE request, slave %u has ERROR.\n",
-                    slave->ring_position);
-            request->req.state = EC_INT_REQUEST_FAILURE;
-            wake_up(&slave->sdo_queue);
-            fsm->sdo_request = NULL;
-            fsm->state = ec_fsm_slave_state_idle;
-            return 0;
-        }
-        list_del_init(&request->list); // dequeue
-        request->req.state = EC_INT_REQUEST_BUSY;
-
-        if (master->debug_level)
-            EC_DBG("Processing FOE request for slave %u.\n",
-                    slave->ring_position);
-
-        fsm->foe_request = &request->req;
-        fsm->state = ec_fsm_slave_state_foe_request;
-        ec_fsm_foe_transfer(&fsm->fsm_foe, slave, &request->req);
-        ec_fsm_foe_exec(&fsm->fsm_foe);
-        ec_master_queue_external_datagram(fsm->slave->master,fsm->datagram);
-        return 1;
-    }
-    return 0;
-}
-
-
-
 /*****************************************************************************/
 
 /** Slave state: SDO_REQUEST.
@@ -306,6 +259,48 @@
 
 /*****************************************************************************/
 
+/** Check for pending FOE requests and process one.
+ *
+ * \return non-zero, if an FOE request is processed.
+ */
+int ec_fsm_slave_action_process_foe(
+        ec_fsm_slave_t *fsm /**< Slave state machine. */
+        )
+{
+    ec_slave_t *slave = fsm->slave;
+    ec_master_t *master = slave->master;
+    ec_master_foe_request_t *request, *next;
+
+    // search the first request to be processed
+    list_for_each_entry_safe(request, next, &slave->foe_requests, list) {
+        if (slave->current_state & EC_SLAVE_STATE_ACK_ERR) {
+            EC_WARN("Aborting FOE request, slave %u has ERROR.\n",
+                    slave->ring_position);
+            request->req.state = EC_INT_REQUEST_FAILURE;
+            wake_up(&slave->sdo_queue);
+            fsm->sdo_request = NULL;
+            fsm->state = ec_fsm_slave_state_idle;
+            return 0;
+        }
+        list_del_init(&request->list); // dequeue
+        request->req.state = EC_INT_REQUEST_BUSY;
+
+        if (master->debug_level)
+            EC_DBG("Processing FOE request for slave %u.\n",
+                    slave->ring_position);
+
+        fsm->foe_request = &request->req;
+        fsm->state = ec_fsm_slave_state_foe_request;
+        ec_fsm_foe_transfer(&fsm->fsm_foe, slave, &request->req);
+        ec_fsm_foe_exec(&fsm->fsm_foe);
+        ec_master_queue_external_datagram(fsm->slave->master,fsm->datagram);
+        return 1;
+    }
+    return 0;
+}
+
+/*****************************************************************************/
+
 /** Slave state: FOE REQUEST.
  */
 void ec_fsm_slave_state_foe_request(
@@ -345,3 +340,96 @@
 }
 
 /*****************************************************************************/
+
+/** Check for pending SoE requests and process one.
+ *
+ * \return non-zero, if a request is processed.
+ */
+int ec_fsm_slave_action_process_soe(
+        ec_fsm_slave_t *fsm /**< Slave state machine. */
+        )
+{
+    ec_slave_t *slave = fsm->slave;
+    ec_master_t *master = slave->master;
+    ec_master_soe_request_t *req, *next;
+
+    // search the first request to be processed
+    list_for_each_entry_safe(req, next, &slave->soe_requests, list) {
+
+        list_del_init(&req->list); // dequeue
+        if (slave->current_state & EC_SLAVE_STATE_ACK_ERR) {
+            EC_WARN("Aborting SoE request, slave %u has ERROR.\n",
+                    slave->ring_position);
+            req->req.state = EC_INT_REQUEST_FAILURE;
+            wake_up(&slave->soe_queue);
+            fsm->state = ec_fsm_slave_state_idle;
+            return 0;
+        }
+
+        if (slave->current_state == EC_SLAVE_STATE_INIT) {
+            EC_WARN("Aborting SoE request, slave %u is in INIT.\n",
+                    slave->ring_position);
+            req->req.state = EC_INT_REQUEST_FAILURE;
+            wake_up(&slave->soe_queue);
+            fsm->state = ec_fsm_slave_state_idle;
+            return 0;
+        }
+
+        req->req.state = EC_INT_REQUEST_BUSY;
+
+        // Found pending request. Execute it!
+        if (master->debug_level)
+            EC_DBG("Processing SoE request for slave %u...\n",
+                    slave->ring_position);
+
+        // Start SoE transfer
+        fsm->soe_request = &req->req;
+        fsm->state = ec_fsm_slave_state_soe_request;
+        ec_fsm_soe_transfer(&fsm->fsm_soe, slave, &req->req);
+        ec_fsm_soe_exec(&fsm->fsm_soe); // execute immediately
+        ec_master_queue_external_datagram(fsm->slave->master, fsm->datagram);
+        return 1;
+    }
+    return 0;
+}
+
+/*****************************************************************************/
+
+/** Slave state: SOE_REQUEST.
+ */
+void ec_fsm_slave_state_soe_request(
+        ec_fsm_slave_t *fsm /**< Slave state machine. */
+        )
+{
+    ec_slave_t *slave = fsm->slave;
+    ec_master_t *master = slave->master;
+    ec_soe_request_t *request = fsm->soe_request;
+
+    if (ec_fsm_soe_exec(&fsm->fsm_soe)) {
+        ec_master_queue_external_datagram(fsm->slave->master, fsm->datagram);
+        return;
+    }
+
+    if (!ec_fsm_soe_success(&fsm->fsm_soe)) {
+        EC_DBG("Failed to process SoE request for slave %u.\n",
+                fsm->slave->ring_position);
+        request->state = EC_INT_REQUEST_FAILURE;
+        wake_up(&slave->soe_queue);
+        fsm->soe_request = NULL;
+        fsm->state = ec_fsm_slave_state_idle;
+        return;
+    }
+
+    if (master->debug_level)
+        EC_DBG("Finished SoE request for slave %u.\n",
+                fsm->slave->ring_position);
+
+    // SoE request finished
+    request->state = EC_INT_REQUEST_SUCCESS;
+    wake_up(&slave->soe_queue);
+
+    fsm->soe_request = NULL;
+    fsm->state = ec_fsm_slave_state_ready;
+}
+
+/*****************************************************************************/
--- a/master/fsm_slave.h	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/fsm_slave.h	Mon Mar 01 18:33:42 2010 +0100
@@ -41,6 +41,7 @@
 #include "sdo_request.h"
 #include "fsm_coe.h"
 #include "fsm_foe.h"
+#include "fsm_soe.h"
 
 typedef struct ec_fsm_slave ec_fsm_slave_t; /**< \see ec_fsm_slave */
 
@@ -54,9 +55,11 @@
     ec_sdo_request_t *sdo_request; /**< SDO request to process. */
     ec_foe_request_t *foe_request; /**< FoE request to process. */
     off_t foe_index; /**< index to FoE write request data */
+    ec_soe_request_t *soe_request; /**< SoE request to process. */
 
     ec_fsm_coe_t fsm_coe; /**< CoE state machine */
     ec_fsm_foe_t fsm_foe; /**< FoE state machine */
+    ec_fsm_soe_t fsm_soe; /**< SoE state machine */
 };
 
 /*****************************************************************************/
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/master/fsm_soe.c	Mon Mar 01 18:33:42 2010 +0100
@@ -0,0 +1,389 @@
+/******************************************************************************
+ *
+ *  $Id$
+ *
+ *  Copyright (C) 2006-2008  Florian Pose, Ingenieurgemeinschaft IgH
+ *
+ *  This file is part of the IgH EtherCAT Master.
+ *
+ *  The IgH EtherCAT Master is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License version 2, as
+ *  published by the Free Software Foundation.
+ *
+ *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ *  Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with the IgH EtherCAT Master; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *  ---
+ *
+ *  The license mentioned above concerns the source code only. Using the
+ *  EtherCAT technology and brand is only permitted in compliance with the
+ *  industrial property and similar rights of Beckhoff Automation GmbH.
+ *
+ *****************************************************************************/
+
+/**
+   \file
+   EtherCAT SoE state machines.
+*/
+
+/*****************************************************************************/
+
+#include "globals.h"
+#include "master.h"
+#include "mailbox.h"
+#include "fsm_soe.h"
+
+/*****************************************************************************/
+
+/** Mailbox type for SoE.
+ */
+#define EC_MBOX_TYPE_SOE 0x05
+
+#define EC_SOE_OPCODE_READ_REQUEST  0x01
+#define EC_SOE_OPCODE_READ_RESPONSE 0x02
+
+#define EC_SOE_READ_REQUEST_SIZE 0x04
+#define EC_SOE_READ_RESPONSE_SIZE 0x04
+
+#define EC_SOE_RESPONSE_TIMEOUT 1000
+
+/*****************************************************************************/
+
+void ec_fsm_soe_read_start(ec_fsm_soe_t *);
+void ec_fsm_soe_read_request(ec_fsm_soe_t *);
+void ec_fsm_soe_read_check(ec_fsm_soe_t *);
+void ec_fsm_soe_read_response(ec_fsm_soe_t *);
+
+void ec_fsm_soe_end(ec_fsm_soe_t *);
+void ec_fsm_soe_error(ec_fsm_soe_t *);
+
+/*****************************************************************************/
+
+/** Constructor.
+ */
+void ec_fsm_soe_init(
+		ec_fsm_soe_t *fsm, /**< finite state machine */
+		ec_datagram_t *datagram /**< datagram */
+		)
+{
+    fsm->state = NULL;
+    fsm->datagram = datagram;
+}
+
+/*****************************************************************************/
+
+/** Destructor.
+ */
+void ec_fsm_soe_clear(
+		ec_fsm_soe_t *fsm /**< finite state machine */
+		)
+{
+}
+
+/*****************************************************************************/
+
+/** Starts to transfer an IDN to/from a slave.
+ */
+void ec_fsm_soe_transfer(
+        ec_fsm_soe_t *fsm, /**< State machine. */
+        ec_slave_t *slave, /**< EtherCAT slave. */
+        ec_soe_request_t *request /**< SoE request. */
+        )
+{
+    fsm->slave = slave;
+    fsm->request = request;
+    if (request->dir == EC_DIR_OUTPUT) {
+        //fsm->state = ec_fsm_soe_write_start;
+	} else {
+        fsm->state = ec_fsm_soe_read_start;
+	}
+}
+
+/*****************************************************************************/
+
+/**
+   Executes the current state of the state machine.
+   \return false, if state machine has terminated
+*/
+
+int ec_fsm_soe_exec(ec_fsm_soe_t *fsm /**< finite state machine */)
+{
+    fsm->state(fsm);
+
+    return fsm->state != ec_fsm_soe_end && fsm->state != ec_fsm_soe_error;
+}
+
+/*****************************************************************************/
+
+/**
+   Returns, if the state machine terminated with success.
+   \return non-zero if successful.
+*/
+
+int ec_fsm_soe_success(ec_fsm_soe_t *fsm /**< Finite state machine */)
+{
+    return fsm->state == ec_fsm_soe_end;
+}
+
+/******************************************************************************
+ * SoE read state machine
+ *****************************************************************************/
+
+/** SoE state: READ START.
+ */
+void ec_fsm_soe_read_start(ec_fsm_soe_t *fsm /**< finite state machine */)
+{
+    ec_datagram_t *datagram = fsm->datagram;
+    ec_slave_t *slave = fsm->slave;
+    ec_master_t *master = slave->master;
+    ec_soe_request_t *request = fsm->request;
+    uint8_t *data;
+
+    if (master->debug_level)
+        EC_DBG("Reading IDN 0x%04X from slave %u.\n",
+               request->idn, slave->ring_position);
+
+    if (!(slave->sii.mailbox_protocols & EC_MBOX_SOE)) {
+        EC_ERR("Slave %u does not support SoE!\n", slave->ring_position);
+        fsm->state = ec_fsm_soe_error;
+        return;
+    }
+
+    data = ec_slave_mbox_prepare_send(slave, datagram, EC_MBOX_TYPE_SOE,
+			EC_SOE_READ_REQUEST_SIZE);
+    if (IS_ERR(data)) {
+        fsm->state = ec_fsm_soe_error;
+        return;
+    }
+
+    EC_WRITE_U8(data, EC_SOE_OPCODE_READ_REQUEST);
+    EC_WRITE_U8(data + 1, 1 << 6); // request value
+    EC_WRITE_U16(data + 2, request->idn);
+
+    if (master->debug_level) {
+        EC_DBG("SCC read request:\n");
+        ec_print_data(data, EC_SOE_READ_REQUEST_SIZE);
+    }
+
+    fsm->request->jiffies_sent = jiffies;
+    fsm->retries = EC_FSM_RETRIES;
+    fsm->state = ec_fsm_soe_read_request;
+}
+
+/*****************************************************************************/
+
+/** SoE state: READ REQUEST.
+ */
+void ec_fsm_soe_read_request(ec_fsm_soe_t *fsm /**< finite state machine */)
+{
+    ec_datagram_t *datagram = fsm->datagram;
+    ec_slave_t *slave = fsm->slave;
+    unsigned long diff_ms;
+
+    if (datagram->state == EC_DATAGRAM_TIMED_OUT && fsm->retries--)
+        return; // FIXME: check for response first?
+
+    if (datagram->state != EC_DATAGRAM_RECEIVED) {
+        fsm->state = ec_fsm_soe_error;
+        EC_ERR("Failed to receive SoE read request for slave %u: ",
+               slave->ring_position);
+        ec_datagram_print_state(datagram);
+        return;
+    }
+
+    diff_ms = (jiffies - fsm->request->jiffies_sent) * 1000 / HZ;
+
+    if (datagram->working_counter != 1) {
+        if (!datagram->working_counter) {
+            if (diff_ms < EC_SOE_RESPONSE_TIMEOUT) {
+                // no response; send request datagram again
+                return;
+            }
+        }
+        fsm->state = ec_fsm_soe_error;
+        EC_ERR("Reception of SoE read request for IDN 0x%04x failed"
+                " after %u ms on slave %u: ",
+                fsm->request->idn, (u32) diff_ms,
+                fsm->slave->ring_position);
+        ec_datagram_print_wc_error(datagram);
+        return;
+    }
+
+    fsm->jiffies_start = datagram->jiffies_sent;
+
+    ec_slave_mbox_prepare_check(slave, datagram); // can not fail.
+    fsm->retries = EC_FSM_RETRIES;
+    fsm->state = ec_fsm_soe_read_check;
+}
+
+/*****************************************************************************/
+
+/** CoE state: READ CHECK.
+ */
+void ec_fsm_soe_read_check(ec_fsm_soe_t *fsm /**< finite state machine */)
+{
+    ec_datagram_t *datagram = fsm->datagram;
+    ec_slave_t *slave = fsm->slave;
+
+    if (datagram->state == EC_DATAGRAM_TIMED_OUT && fsm->retries--)
+        return;
+
+    if (datagram->state != EC_DATAGRAM_RECEIVED) {
+        fsm->state = ec_fsm_soe_error;
+        EC_ERR("Failed to receive SoE mailbox check datagram from slave %u: ",
+               slave->ring_position);
+        ec_datagram_print_state(datagram);
+        return;
+    }
+
+    if (datagram->working_counter != 1) {
+        fsm->state = ec_fsm_soe_error;
+        EC_ERR("Reception of SoE mailbox check datagram failed on slave %u: ",
+				slave->ring_position);
+        ec_datagram_print_wc_error(datagram);
+        return;
+    }
+
+    if (!ec_slave_mbox_check(datagram)) {
+        unsigned long diff_ms =
+            (datagram->jiffies_received - fsm->jiffies_start) * 1000 / HZ;
+        if (diff_ms >= EC_SOE_RESPONSE_TIMEOUT) {
+            fsm->state = ec_fsm_soe_error;
+            EC_ERR("Timeout after %u ms while waiting for IDN 0x%04x"
+                    " read response on slave %u.\n", (u32) diff_ms,
+                    fsm->request->idn, slave->ring_position);
+            return;
+        }
+
+        ec_slave_mbox_prepare_check(slave, datagram); // can not fail.
+        fsm->retries = EC_FSM_RETRIES;
+        return;
+    }
+
+    // Fetch response
+    ec_slave_mbox_prepare_fetch(slave, datagram); // can not fail.
+    fsm->retries = EC_FSM_RETRIES;
+    fsm->state = ec_fsm_soe_read_response;
+}
+
+/*****************************************************************************/
+
+/** SoE state: READ RESPONSE.
+ */
+void ec_fsm_soe_read_response(ec_fsm_soe_t *fsm /**< finite state machine */)
+{
+    ec_datagram_t *datagram = fsm->datagram;
+    ec_slave_t *slave = fsm->slave;
+    ec_master_t *master = slave->master;
+    uint8_t *data, mbox_prot, opcode, error_flag, value_included;
+    size_t rec_size, data_size;
+    ec_soe_request_t *req = fsm->request;
+
+    if (datagram->state == EC_DATAGRAM_TIMED_OUT && fsm->retries--)
+        return; // FIXME: request again?
+
+    if (datagram->state != EC_DATAGRAM_RECEIVED) {
+        fsm->state = ec_fsm_soe_error;
+        EC_ERR("Failed to receive SoE read response datagram for"
+               " slave %u: ", slave->ring_position);
+        ec_datagram_print_state(datagram);
+        return;
+    }
+
+    if (datagram->working_counter != 1) {
+        fsm->state = ec_fsm_soe_error;
+        EC_ERR("Reception of SoE read response failed on slave %u: ",
+                slave->ring_position);
+        ec_datagram_print_wc_error(datagram);
+        return;
+    }
+
+    data = ec_slave_mbox_fetch(slave, datagram, &mbox_prot, &rec_size);
+    if (IS_ERR(data)) {
+        fsm->state = ec_fsm_soe_error;
+        return;
+    }
+
+    if (master->debug_level) {
+        EC_DBG("SCC read response:\n");
+        ec_print_data(data, rec_size);
+    }
+
+    if (mbox_prot != EC_MBOX_TYPE_SOE) {
+        fsm->state = ec_fsm_soe_error;
+        EC_WARN("Received mailbox protocol 0x%02X as response.\n", mbox_prot);
+        return;
+    }
+
+    if (rec_size < EC_SOE_READ_RESPONSE_SIZE) {
+        fsm->state = ec_fsm_soe_error;
+        EC_ERR("Received currupted SoE read response (%zu bytes)!\n",
+				rec_size);
+        ec_print_data(data, rec_size);
+        return;
+    }
+
+	opcode = EC_READ_U8(data) & 0x3;
+    if (opcode != EC_SOE_OPCODE_READ_RESPONSE) {
+        EC_ERR("Received no read response (opcode %x).\n", opcode);
+        ec_print_data(data, rec_size);
+        fsm->state = ec_fsm_soe_error;
+        return;
+    }
+
+	error_flag = (EC_READ_U8(data) >> 4) & 1;
+	if (error_flag) {
+		req->error_code = EC_READ_U16(data + rec_size - 2);
+		EC_ERR("Received error response: 0x%04x.\n",
+				req->error_code);
+        fsm->state = ec_fsm_soe_error;
+        return;
+	} else {
+		req->error_code = 0x0000;
+	}
+
+	value_included = (EC_READ_U8(data + 1) >> 6) & 1;
+	if (!value_included) {
+		EC_ERR("No value included!\n");
+		fsm->state = ec_fsm_soe_error;
+		return;
+	}
+
+	data_size = rec_size - EC_SOE_READ_RESPONSE_SIZE;
+	if (ec_soe_request_copy_data(req,
+				data + EC_SOE_READ_RESPONSE_SIZE, data_size)) {
+		fsm->state = ec_fsm_soe_error;
+		return;
+	}
+
+	if (master->debug_level) {
+		EC_DBG("IDN data:\n");
+		ec_print_data(req->data, req->data_size);
+	}
+
+    fsm->state = ec_fsm_soe_end; // success
+}
+
+/*****************************************************************************/
+
+/** State: ERROR.
+ */
+void ec_fsm_soe_error(ec_fsm_soe_t *fsm /**< finite state machine */)
+{
+}
+
+/*****************************************************************************/
+
+/** State: END.
+ */
+void ec_fsm_soe_end(ec_fsm_soe_t *fsm /**< finite state machine */)
+{
+}
+
+/*****************************************************************************/
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/master/fsm_soe.h	Mon Mar 01 18:33:42 2010 +0100
@@ -0,0 +1,73 @@
+/******************************************************************************
+ *
+ *  $Id$
+ *
+ *  Copyright (C) 2006-2008  Florian Pose, Ingenieurgemeinschaft IgH
+ *
+ *  This file is part of the IgH EtherCAT Master.
+ *
+ *  The IgH EtherCAT Master is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License version 2, as
+ *  published by the Free Software Foundation.
+ *
+ *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ *  Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with the IgH EtherCAT Master; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *  ---
+ *
+ *  The license mentioned above concerns the source code only. Using the
+ *  EtherCAT technology and brand is only permitted in compliance with the
+ *  industrial property and similar rights of Beckhoff Automation GmbH.
+ *
+ *****************************************************************************/
+
+/**
+   \file
+   EtherCAT CoE state machines.
+*/
+
+/*****************************************************************************/
+
+#ifndef __EC_FSM_SOE_H__
+#define __EC_FSM_SOE_H__
+
+#include "globals.h"
+#include "datagram.h"
+#include "slave.h"
+#include "soe_request.h"
+
+/*****************************************************************************/
+
+typedef struct ec_fsm_soe ec_fsm_soe_t; /**< \see ec_fsm_soe */
+
+/** Finite state machines for the Sercos over EtherCAT protocol.
+ */
+struct ec_fsm_soe {
+    ec_slave_t *slave; /**< slave the FSM runs on */
+    ec_datagram_t *datagram; /**< datagram used in the state machine */
+    unsigned int retries; /**< retries upon datagram timeout */
+
+    void (*state)(ec_fsm_soe_t *); /**< CoE state function */
+    unsigned long jiffies_start; /**< CoE timestamp. */
+    ec_soe_request_t *request; /**< SoE request */
+};
+
+/*****************************************************************************/
+
+void ec_fsm_soe_init(ec_fsm_soe_t *, ec_datagram_t *);
+void ec_fsm_soe_clear(ec_fsm_soe_t *);
+
+void ec_fsm_soe_transfer(ec_fsm_soe_t *, ec_slave_t *, ec_soe_request_t *);
+
+int ec_fsm_soe_exec(ec_fsm_soe_t *);
+int ec_fsm_soe_success(ec_fsm_soe_t *);
+
+/*****************************************************************************/
+
+#endif
--- a/master/ioctl.h	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/ioctl.h	Mon Mar 01 18:33:42 2010 +0100
@@ -56,7 +56,7 @@
  *
  * Increment this when changing the ioctl interface!
  */
-#define EC_IOCTL_VERSION_MAGIC 1
+#define EC_IOCTL_VERSION_MAGIC 2
 
 // Command-line tool
 #define EC_IOCTL_MODULE                EC_IOR(0x00, ec_ioctl_module_t)
@@ -80,57 +80,59 @@
 #define EC_IOCTL_SLAVE_REG_WRITE       EC_IOW(0x12, ec_ioctl_slave_reg_t)
 #define EC_IOCTL_SLAVE_FOE_READ       EC_IOWR(0x13, ec_ioctl_slave_foe_t)
 #define EC_IOCTL_SLAVE_FOE_WRITE       EC_IOW(0x14, ec_ioctl_slave_foe_t)
-#define EC_IOCTL_CONFIG               EC_IOWR(0x15, ec_ioctl_config_t)
-#define EC_IOCTL_CONFIG_PDO           EC_IOWR(0x16, ec_ioctl_config_pdo_t)
-#define EC_IOCTL_CONFIG_PDO_ENTRY     EC_IOWR(0x17, ec_ioctl_config_pdo_entry_t)
-#define EC_IOCTL_CONFIG_SDO           EC_IOWR(0x18, ec_ioctl_config_sdo_t)
+#define EC_IOCTL_SLAVE_SOE_READ       EC_IOWR(0x15, ec_ioctl_slave_soe_t)
+#define EC_IOCTL_SLAVE_SOE_WRITE      EC_IOWR(0x16, ec_ioctl_slave_soe_t)
+#define EC_IOCTL_CONFIG               EC_IOWR(0x17, ec_ioctl_config_t)
+#define EC_IOCTL_CONFIG_PDO           EC_IOWR(0x18, ec_ioctl_config_pdo_t)
+#define EC_IOCTL_CONFIG_PDO_ENTRY     EC_IOWR(0x19, ec_ioctl_config_pdo_entry_t)
+#define EC_IOCTL_CONFIG_SDO           EC_IOWR(0x1a, ec_ioctl_config_sdo_t)
 #ifdef EC_EOE
-#define EC_IOCTL_EOE_HANDLER          EC_IOWR(0x19, ec_ioctl_eoe_handler_t)
+#define EC_IOCTL_EOE_HANDLER          EC_IOWR(0x1b, ec_ioctl_eoe_handler_t)
 #endif
 
 // Application interface
-#define EC_IOCTL_REQUEST                EC_IO(0x1a)
-#define EC_IOCTL_CREATE_DOMAIN          EC_IO(0x1b)
-#define EC_IOCTL_CREATE_SLAVE_CONFIG  EC_IOWR(0x1c, ec_ioctl_config_t)
-#define EC_IOCTL_ACTIVATE              EC_IOR(0x1d, size_t)
-#define EC_IOCTL_DEACTIVATE             EC_IO(0x1e)
-#define EC_IOCTL_SEND                   EC_IO(0x1f)
-#define EC_IOCTL_RECEIVE                EC_IO(0x20)
-#define EC_IOCTL_MASTER_STATE          EC_IOR(0x21, ec_master_state_t)
-#define EC_IOCTL_APP_TIME              EC_IOW(0x22, ec_ioctl_app_time_t)
-#define EC_IOCTL_SYNC_REF               EC_IO(0x23)
-#define EC_IOCTL_SYNC_SLAVES            EC_IO(0x24)
-#define EC_IOCTL_SYNC_MON_QUEUE         EC_IO(0x25)
-#define EC_IOCTL_SYNC_MON_PROCESS      EC_IOR(0x26, uint32_t)
-#define EC_IOCTL_SC_SYNC               EC_IOW(0x27, ec_ioctl_config_t)
-#define EC_IOCTL_SC_WATCHDOG           EC_IOW(0x28, ec_ioctl_config_t)
-#define EC_IOCTL_SC_ADD_PDO            EC_IOW(0x29, ec_ioctl_config_pdo_t)
-#define EC_IOCTL_SC_CLEAR_PDOS         EC_IOW(0x2a, ec_ioctl_config_pdo_t)
-#define EC_IOCTL_SC_ADD_ENTRY          EC_IOW(0x2b, ec_ioctl_add_pdo_entry_t)
-#define EC_IOCTL_SC_CLEAR_ENTRIES      EC_IOW(0x2c, ec_ioctl_config_pdo_t)
-#define EC_IOCTL_SC_REG_PDO_ENTRY     EC_IOWR(0x2d, ec_ioctl_reg_pdo_entry_t)
-#define EC_IOCTL_SC_DC                 EC_IOW(0x2e, ec_ioctl_config_t)
-#define EC_IOCTL_SC_SDO                EC_IOW(0x2f, ec_ioctl_sc_sdo_t)
-#define EC_IOCTL_SC_SDO_REQUEST       EC_IOWR(0x20, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SC_VOE               EC_IOWR(0x31, ec_ioctl_voe_t)
-#define EC_IOCTL_SC_STATE             EC_IOWR(0x32, ec_ioctl_sc_state_t)
-#define EC_IOCTL_DOMAIN_OFFSET          EC_IO(0x33)
-#define EC_IOCTL_DOMAIN_PROCESS         EC_IO(0x34)
-#define EC_IOCTL_DOMAIN_QUEUE           EC_IO(0x35)
-#define EC_IOCTL_DOMAIN_STATE         EC_IOWR(0x36, ec_ioctl_domain_state_t)
-#define EC_IOCTL_SDO_REQUEST_TIMEOUT  EC_IOWR(0x37, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SDO_REQUEST_STATE    EC_IOWR(0x38, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SDO_REQUEST_READ     EC_IOWR(0x39, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SDO_REQUEST_WRITE    EC_IOWR(0x3a, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_SDO_REQUEST_DATA     EC_IOWR(0x3b, ec_ioctl_sdo_request_t)
-#define EC_IOCTL_VOE_SEND_HEADER       EC_IOW(0x3c, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_REC_HEADER       EC_IOWR(0x3d, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_READ              EC_IOW(0x3e, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_READ_NOSYNC       EC_IOW(0x3f, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_WRITE            EC_IOWR(0x40, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_EXEC             EC_IOWR(0x41, ec_ioctl_voe_t)
-#define EC_IOCTL_VOE_DATA             EC_IOWR(0x42, ec_ioctl_voe_t)
-#define EC_IOCTL_SET_SEND_INTERVAL     EC_IOW(0x43, size_t)
+#define EC_IOCTL_REQUEST                EC_IO(0x1c)
+#define EC_IOCTL_CREATE_DOMAIN          EC_IO(0x1d)
+#define EC_IOCTL_CREATE_SLAVE_CONFIG  EC_IOWR(0x1e, ec_ioctl_config_t)
+#define EC_IOCTL_ACTIVATE              EC_IOR(0x1f, size_t)
+#define EC_IOCTL_DEACTIVATE             EC_IO(0x20)
+#define EC_IOCTL_SEND                   EC_IO(0x21)
+#define EC_IOCTL_RECEIVE                EC_IO(0x22)
+#define EC_IOCTL_MASTER_STATE          EC_IOR(0x23, ec_master_state_t)
+#define EC_IOCTL_APP_TIME              EC_IOW(0x24, ec_ioctl_app_time_t)
+#define EC_IOCTL_SYNC_REF               EC_IO(0x25)
+#define EC_IOCTL_SYNC_SLAVES            EC_IO(0x26)
+#define EC_IOCTL_SYNC_MON_QUEUE         EC_IO(0x27)
+#define EC_IOCTL_SYNC_MON_PROCESS      EC_IOR(0x28, uint32_t)
+#define EC_IOCTL_SC_SYNC               EC_IOW(0x29, ec_ioctl_config_t)
+#define EC_IOCTL_SC_WATCHDOG           EC_IOW(0x2a, ec_ioctl_config_t)
+#define EC_IOCTL_SC_ADD_PDO            EC_IOW(0x2b, ec_ioctl_config_pdo_t)
+#define EC_IOCTL_SC_CLEAR_PDOS         EC_IOW(0x2c, ec_ioctl_config_pdo_t)
+#define EC_IOCTL_SC_ADD_ENTRY          EC_IOW(0x2d, ec_ioctl_add_pdo_entry_t)
+#define EC_IOCTL_SC_CLEAR_ENTRIES      EC_IOW(0x2e, ec_ioctl_config_pdo_t)
+#define EC_IOCTL_SC_REG_PDO_ENTRY     EC_IOWR(0x2f, ec_ioctl_reg_pdo_entry_t)
+#define EC_IOCTL_SC_DC                 EC_IOW(0x20, ec_ioctl_config_t)
+#define EC_IOCTL_SC_SDO                EC_IOW(0x31, ec_ioctl_sc_sdo_t)
+#define EC_IOCTL_SC_SDO_REQUEST       EC_IOWR(0x32, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SC_VOE               EC_IOWR(0x33, ec_ioctl_voe_t)
+#define EC_IOCTL_SC_STATE             EC_IOWR(0x34, ec_ioctl_sc_state_t)
+#define EC_IOCTL_DOMAIN_OFFSET          EC_IO(0x35)
+#define EC_IOCTL_DOMAIN_PROCESS         EC_IO(0x36)
+#define EC_IOCTL_DOMAIN_QUEUE           EC_IO(0x37)
+#define EC_IOCTL_DOMAIN_STATE         EC_IOWR(0x38, ec_ioctl_domain_state_t)
+#define EC_IOCTL_SDO_REQUEST_TIMEOUT  EC_IOWR(0x39, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SDO_REQUEST_STATE    EC_IOWR(0x3a, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SDO_REQUEST_READ     EC_IOWR(0x3b, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SDO_REQUEST_WRITE    EC_IOWR(0x3c, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_SDO_REQUEST_DATA     EC_IOWR(0x3d, ec_ioctl_sdo_request_t)
+#define EC_IOCTL_VOE_SEND_HEADER       EC_IOW(0x3e, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_REC_HEADER       EC_IOWR(0x3f, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_READ              EC_IOW(0x40, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_READ_NOSYNC       EC_IOW(0x41, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_WRITE            EC_IOWR(0x42, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_EXEC             EC_IOWR(0x43, ec_ioctl_voe_t)
+#define EC_IOCTL_VOE_DATA             EC_IOWR(0x44, ec_ioctl_voe_t)
+#define EC_IOCTL_SET_SEND_INTERVAL     EC_IOW(0x45, size_t)
 
 /*****************************************************************************/
 
@@ -404,6 +406,21 @@
 
 typedef struct {
     // inputs
+    uint16_t slave_position;
+    uint16_t idn;
+    uint32_t mem_size;
+    uint8_t *data;
+
+    // outputs
+    uint32_t data_size;
+    uint32_t result;
+    uint16_t error_code;
+} ec_ioctl_slave_soe_t;
+
+/*****************************************************************************/
+
+typedef struct {
+    // inputs
     uint32_t config_index;
 
     // outputs
--- a/master/master.c	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/master.c	Mon Mar 01 18:33:42 2010 +0100
@@ -417,7 +417,8 @@
             request = list_entry(slave->slave_sdo_requests.next,
                     ec_master_sdo_request_t, list);
             list_del_init(&request->list); // dequeue
-            EC_INFO("Discarding SDO request, slave %u does not exist anymore.\n",
+            EC_INFO("Discarding SDO request,"
+					" slave %u does not exist anymore.\n",
                     slave->ring_position);
             request->req.state = EC_INT_REQUEST_FAILURE;
             wake_up(&slave->sdo_queue);
@@ -431,11 +432,27 @@
             request = list_entry(slave->foe_requests.next,
                     ec_master_foe_request_t, list);
             list_del_init(&request->list); // dequeue
-            EC_INFO("Discarding FOE request, slave %u does not exist anymore.\n",
+            EC_INFO("Discarding FoE request,"
+					" slave %u does not exist anymore.\n",
                     slave->ring_position);
             request->req.state = EC_INT_REQUEST_FAILURE;
             wake_up(&slave->foe_queue);
         }
+        // SoE requests
+        while (1) {
+            ec_master_soe_request_t *request;
+            if (list_empty(&slave->soe_requests))
+                break;
+            // get first request
+            request = list_entry(slave->soe_requests.next,
+                    ec_master_soe_request_t, list);
+            list_del_init(&request->list); // dequeue
+            EC_INFO("Discarding SoE request,"
+					" slave %u does not exist anymore.\n",
+                    slave->ring_position);
+            request->req.state = EC_INT_REQUEST_FAILURE;
+            wake_up(&slave->soe_queue);
+        }
         ec_slave_clear(slave);
     }
 
--- a/master/sdo_request.c	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/sdo_request.c	Mon Mar 01 18:33:42 2010 +0100
@@ -191,7 +191,7 @@
 }
 
 /*****************************************************************************
- * Realtime interface.
+ * Application interface.
  ****************************************************************************/
 
 void ecrt_sdo_request_timeout(ec_sdo_request_t *req, uint32_t timeout)
--- a/master/slave.c	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/slave.c	Mon Mar 01 18:33:42 2010 +0100
@@ -155,6 +155,9 @@
     INIT_LIST_HEAD(&slave->foe_requests);
     init_waitqueue_head(&slave->foe_queue);
 
+    INIT_LIST_HEAD(&slave->soe_requests);
+    init_waitqueue_head(&slave->soe_queue);
+
     // init state machine datagram
     ec_datagram_init(&slave->fsm_datagram);
     snprintf(slave->fsm_datagram.name, EC_DATAGRAM_NAME_SIZE, "slave%u-fsm",slave->ring_position);
--- a/master/slave.h	Fri Feb 26 18:22:02 2010 +0100
+++ b/master/slave.h	Mon Mar 01 18:33:42 2010 +0100
@@ -163,8 +163,11 @@
     wait_queue_head_t sdo_queue; /**< Wait queue for SDO access requests
                                    from user space. */
     struct list_head foe_requests; /**< FoE write requests. */
-    wait_queue_head_t foe_queue; /**< Wait queue for FoE
-                                      write requests from user space. */
+    wait_queue_head_t foe_queue; /**< Wait queue for FoE requests from user
+                                   space. */
+    struct list_head soe_requests; /**< FoE write requests. */
+    wait_queue_head_t soe_queue; /**< Wait queue for SoE requests from user
+                                   space. */
     ec_fsm_slave_t fsm; /**< Slave state machine. */
     ec_datagram_t fsm_datagram; /**< Datagram used for state machines. */
 };
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/master/soe_request.c	Mon Mar 01 18:33:42 2010 +0100
@@ -0,0 +1,198 @@
+/******************************************************************************
+ *
+ *  $Id$
+ *
+ *  Copyright (C) 2006-2008  Florian Pose, Ingenieurgemeinschaft IgH
+ *
+ *  This file is part of the IgH EtherCAT Master.
+ *
+ *  The IgH EtherCAT Master is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License version 2, as
+ *  published by the Free Software Foundation.
+ *
+ *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ *  Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with the IgH EtherCAT Master; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *  ---
+ *
+ *  The license mentioned above concerns the source code only. Using the
+ *  EtherCAT technology and brand is only permitted in compliance with the
+ *  industrial property and similar rights of Beckhoff Automation GmbH.
+ *
+ *****************************************************************************/
+
+/** \file
+ * Sercos-over-EtherCAT request functions.
+ */
+
+/*****************************************************************************/
+
+#include <linux/module.h>
+#include <linux/jiffies.h>
+
+#include "soe_request.h"
+
+/*****************************************************************************/
+
+/** Default timeout in ms to wait for SoE responses.
+ */
+#define EC_SOE_REQUEST_RESPONSE_TIMEOUT 1000
+
+/*****************************************************************************/
+
+void ec_soe_request_clear_data(ec_soe_request_t *);
+
+/*****************************************************************************/
+
+/** SoE request constructor.
+ */
+void ec_soe_request_init(
+        ec_soe_request_t *req /**< SoE request. */
+        )
+{
+    req->data = NULL;
+    req->mem_size = 0;
+    req->data_size = 0;
+    req->dir = EC_DIR_INVALID;
+    req->state = EC_INT_REQUEST_INIT;
+    //req->jiffies_start = 0U;
+    req->jiffies_sent = 0U;
+    req->error_code = 0x0000;
+}
+
+/*****************************************************************************/
+
+/** SoE request destructor.
+ */
+void ec_soe_request_clear(
+        ec_soe_request_t *req /**< SoE request. */
+        )
+{
+    ec_soe_request_clear_data(req);
+}
+
+/*****************************************************************************/
+
+/** Set IDN.
+ */
+void ec_soe_request_set_idn(
+        ec_soe_request_t *req, /**< SoE request. */
+        uint16_t idn /** IDN. */
+        )
+{
+    req->idn = idn;
+}
+
+#if 0
+/*****************************************************************************/
+
+/** Copy another SoE request.
+ *
+ * \attention Only the index subindex and data are copied.
+ */
+int ec_soe_request_copy(
+        ec_soe_request_t *req, /**< SoE request. */
+        const ec_soe_request_t *other /**< Other SoE request to copy from. */
+        )
+{
+    req->complete_access = other->complete_access;
+    req->index = other->index;
+    req->subindex = other->subindex;
+    return ec_soe_request_copy_data(req, other->data, other->data_size);
+}
+#endif
+
+/*****************************************************************************/
+
+/** Free allocated memory.
+ */
+void ec_soe_request_clear_data(
+        ec_soe_request_t *req /**< SoE request. */
+        )
+{
+    if (req->data) {
+        kfree(req->data);
+        req->data = NULL;
+    }
+
+    req->mem_size = 0;
+    req->data_size = 0;
+}
+
+/*****************************************************************************/
+
+/** Pre-allocates the data memory.
+ *
+ * If the \a mem_size is already bigger than \a size, nothing is done.
+ *
+ * \return 0 on success, otherwise -ENOMEM.
+ */
+int ec_soe_request_alloc(
+        ec_soe_request_t *req, /**< SoE request. */
+        size_t size /**< Data size to allocate. */
+        )
+{
+    if (size <= req->mem_size)
+        return 0;
+
+    ec_soe_request_clear_data(req);
+
+    if (!(req->data = (uint8_t *) kmalloc(size, GFP_KERNEL))) {
+        EC_ERR("Failed to allocate %zu bytes of SoE memory.\n", size);
+        return -ENOMEM;
+    }
+
+    req->mem_size = size;
+    req->data_size = 0;
+    return 0;
+}
+
+/*****************************************************************************/
+
+/** Copies SoE data from an external source.
+ *
+ * If the \a mem_size is to small, new memory is allocated.
+ *
+ * \retval  0 Success.
+ * \retval <0 Error code.
+ */
+int ec_soe_request_copy_data(
+        ec_soe_request_t *req, /**< SoE request. */
+        const uint8_t *source, /**< Source data. */
+        size_t size /**< Number of bytes in \a source. */
+        )
+{
+    int ret = ec_soe_request_alloc(req, size);
+    if (ret < 0)
+        return ret;
+
+    memcpy(req->data, source, size);
+    req->data_size = size;
+    return 0;
+}
+
+/*****************************************************************************/
+
+void ec_soe_request_read(ec_soe_request_t *req)
+{
+    req->dir = EC_DIR_INPUT;
+    req->state = EC_INT_REQUEST_QUEUED;
+    req->error_code = 0x0000;
+}
+
+/*****************************************************************************/
+
+void ec_soe_request_write(ec_soe_request_t *req)
+{
+    req->dir = EC_DIR_OUTPUT;
+    req->state = EC_INT_REQUEST_QUEUED;
+    req->error_code = 0x0000;
+}
+
+/*****************************************************************************/
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/master/soe_request.h	Mon Mar 01 18:33:42 2010 +0100
@@ -0,0 +1,80 @@
+/******************************************************************************
+ *
+ *  $Id$
+ *
+ *  Copyright (C) 2006-2008  Florian Pose, Ingenieurgemeinschaft IgH
+ *
+ *  This file is part of the IgH EtherCAT Master.
+ *
+ *  The IgH EtherCAT Master is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License version 2, as
+ *  published by the Free Software Foundation.
+ *
+ *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ *  Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with the IgH EtherCAT Master; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *  ---
+ *
+ *  The license mentioned above concerns the source code only. Using the
+ *  EtherCAT technology and brand is only permitted in compliance with the
+ *  industrial property and similar rights of Beckhoff Automation GmbH.
+ *
+ *****************************************************************************/
+
+/**
+   \file
+   EtherCAT SoE request structure.
+*/
+
+/*****************************************************************************/
+
+#ifndef __EC_SOE_REQUEST_H__
+#define __EC_SOE_REQUEST_H__
+
+#include <linux/list.h>
+
+#include "globals.h"
+
+/*****************************************************************************/
+
+/** Sercos-over-EtherCAT request.
+ */
+typedef struct {
+    struct list_head list; /**< List item. */
+    uint16_t idn; /**< Sercos ID-Number. */
+    uint8_t *data; /**< Pointer to SDO data. */
+    size_t mem_size; /**< Size of SDO data memory. */
+    size_t data_size; /**< Size of SDO data. */
+    ec_direction_t dir; /**< Direction. EC_DIR_OUTPUT means writing to the
+                          slave, EC_DIR_INPUT means reading from the slave. */
+    ec_internal_request_state_t state; /**< Request state. */
+    unsigned long jiffies_sent; /**< Jiffies, when the upload/download
+                                     request was sent. */
+    uint16_t error_code; /**< SoE error code. */
+} ec_soe_request_t;
+
+/*****************************************************************************/
+
+void ec_soe_request_init(ec_soe_request_t *);
+void ec_soe_request_clear(ec_soe_request_t *);
+
+void ec_soe_request_set_idn(ec_soe_request_t *, uint16_t);
+int ec_soe_request_alloc(ec_soe_request_t *, size_t);
+int ec_soe_request_copy_data(ec_soe_request_t *, const uint8_t *, size_t);
+void ec_soe_request_read(ec_soe_request_t *);
+void ec_soe_request_write(ec_soe_request_t *);
+
+#if 0
+int ec_soe_request_copy(ec_soe_request_t *, const ec_soe_request_t *);
+int ec_soe_request_timed_out(const ec_soe_request_t *);
+#endif
+
+/*****************************************************************************/
+
+#endif
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tool/CommandSoeRead.cpp	Mon Mar 01 18:33:42 2010 +0100
@@ -0,0 +1,142 @@
+/*****************************************************************************
+ *
+ *  $Id$
+ *
+ *  Copyright (C) 2006-2009  Florian Pose, Ingenieurgemeinschaft IgH
+ *
+ *  This file is part of the IgH EtherCAT Master.
+ *
+ *  The IgH EtherCAT Master is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License version 2, as
+ *  published by the Free Software Foundation.
+ *
+ *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ *  Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with the IgH EtherCAT Master; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *  ---
+ *
+ *  The license mentioned above concerns the source code only. Using the
+ *  EtherCAT technology and brand is only permitted in compliance with the
+ *  industrial property and similar rights of Beckhoff Automation GmbH.
+ *
+ ****************************************************************************/
+
+#include <iostream>
+#include <iomanip>
+using namespace std;
+
+#include "CommandSoeRead.h"
+#include "MasterDevice.h"
+
+/*****************************************************************************/
+
+CommandSoeRead::CommandSoeRead():
+    Command("soe_read", "Read an SoE IDN from a slave.")
+{
+}
+
+/*****************************************************************************/
+
+string CommandSoeRead::helpString() const
+{
+    stringstream str;
+
+    str << getName() << " [OPTIONS] <INDEX> <SUBINDEX>" << endl
+        << endl
+        << getBriefDescription() << endl
+        << endl
+        << "This command requires a single slave to be selected." << endl
+        << endl
+        << "Arguments:" << endl
+        << "  IDN      is the IDN and must be an unsigned" << endl
+        << "           16 bit number." << endl
+        << endl
+        << "Command-specific options:" << endl
+        << "  --alias    -a <alias>" << endl
+        << "  --position -p <pos>    Slave selection. See the help of" << endl
+        << "                         the 'slaves' command." << endl
+        << endl
+        << numericInfo();
+
+    return str.str();
+}
+
+/****************************************************************************/
+
+void CommandSoeRead::execute(const StringVector &args)
+{
+    SlaveList slaves;
+    stringstream err, strIdn;
+    ec_ioctl_slave_soe_t data;
+
+    if (args.size() != 1) {
+        err << "'" << getName() << "' takes one argument!";
+        throwInvalidUsageException(err);
+    }
+
+    strIdn << args[0];
+    strIdn
+        >> resetiosflags(ios::basefield) // guess base from prefix
+        >> data.idn;
+    if (strIdn.fail()) {
+        err << "Invalid IDN '" << args[0] << "'!";
+        throwInvalidUsageException(err);
+    }
+
+    if (getMasterIndices().size() != 1) {
+        err << getName() << " requires to select a single master!";
+        throwInvalidUsageException(err);
+    }
+    MasterDevice m(getMasterIndices().front());
+    m.open(MasterDevice::Read);
+    slaves = selectedSlaves(m);
+    if (slaves.size() != 1) {
+        throwSingleSlaveRequired(slaves.size());
+    }
+    data.slave_position = slaves.front().position;
+
+	data.mem_size = 1024;
+    data.data = new uint8_t[data.mem_size + 1];
+
+    try {
+        m.readSoe(&data);
+    } catch (MasterDeviceSoeException &e) {
+        delete [] data.data;
+        err << "CoE read command aborted with code 0x"
+            << setfill('0') << hex << setw(4) << e.errorCode;
+        throwCommandException(err);
+    } catch (MasterDeviceException &e) {
+        delete [] data.data;
+        throw e;
+    }
+
+    m.close();
+
+	printRawData(data.data, data.data_size);
+
+    delete [] data.data;
+}
+
+/****************************************************************************/
+
+void CommandSoeRead::printRawData(
+        const uint8_t *data,
+        unsigned int size
+        )
+{
+    cout << hex << setfill('0');
+    while (size--) {
+        cout << "0x" << setw(2) << (unsigned int) *data++;
+        if (size)
+            cout << " ";
+    }
+    cout << endl;
+}
+
+/*****************************************************************************/
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tool/CommandSoeRead.h	Mon Mar 01 18:33:42 2010 +0100
@@ -0,0 +1,52 @@
+/*****************************************************************************
+ *
+ *  $Id$
+ *
+ *  Copyright (C) 2006-2009  Florian Pose, Ingenieurgemeinschaft IgH
+ *
+ *  This file is part of the IgH EtherCAT Master.
+ *
+ *  The IgH EtherCAT Master is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License version 2, as
+ *  published by the Free Software Foundation.
+ *
+ *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ *  Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with the IgH EtherCAT Master; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *  ---
+ *
+ *  The license mentioned above concerns the source code only. Using the
+ *  EtherCAT technology and brand is only permitted in compliance with the
+ *  industrial property and similar rights of Beckhoff Automation GmbH.
+ *
+ ****************************************************************************/
+
+#ifndef __COMMANDSOEREAD_H__
+#define __COMMANDSOEREAD_H__
+
+#include "Command.h"
+
+/****************************************************************************/
+
+class CommandSoeRead:
+    public Command
+{
+    public:
+        CommandSoeRead();
+
+        string helpString() const;
+        void execute(const StringVector &);
+
+    protected:
+        static void printRawData(const uint8_t *, unsigned int);
+};
+
+/****************************************************************************/
+
+#endif
--- a/tool/Makefile.am	Fri Feb 26 18:22:02 2010 +0100
+++ b/tool/Makefile.am	Mon Mar 01 18:33:42 2010 +0100
@@ -56,6 +56,7 @@
 	CommandSiiRead.cpp \
 	CommandSiiWrite.cpp \
 	CommandSlaves.cpp \
+	CommandSoeRead.cpp \
 	CommandStates.cpp \
 	CommandUpload.cpp \
 	CommandVersion.cpp \
@@ -94,6 +95,7 @@
 	CommandSiiRead.h \
 	CommandSiiWrite.h \
 	CommandSlaves.h \
+	CommandSoeRead.h \
 	CommandStates.h \
 	CommandUpload.h \
 	CommandVersion.h \
--- a/tool/MasterDevice.cpp	Fri Feb 26 18:22:02 2010 +0100
+++ b/tool/MasterDevice.cpp	Mon Mar 01 18:33:42 2010 +0100
@@ -526,4 +526,19 @@
 
 #endif
 
+/****************************************************************************/
+
+void MasterDevice::readSoe(ec_ioctl_slave_soe_t *data)
+{
+    if (ioctl(fd, EC_IOCTL_SLAVE_SOE_READ, data) < 0) {
+        if (errno == EIO && data->error_code) {
+            throw MasterDeviceSoeException(data->error_code);
+        } else {
+			stringstream err;
+			err << "Failed to read IDN: " << strerror(errno);
+			throw MasterDeviceException(err);
+		}
+    }
+}
+
 /*****************************************************************************/
--- a/tool/MasterDevice.h	Fri Feb 26 18:22:02 2010 +0100
+++ b/tool/MasterDevice.h	Mon Mar 01 18:33:42 2010 +0100
@@ -67,7 +67,7 @@
         uint32_t abortCode;
     
     protected:
-        /** Constructor with stringstream parameter. */
+        /** Constructor with abort code parameter. */
         MasterDeviceSdoAbortException(uint32_t code):
             MasterDeviceException("SDO transfer aborted.") {
                 abortCode = code;
@@ -76,6 +76,24 @@
 
 /****************************************************************************/
 
+class MasterDeviceSoeException:
+    public MasterDeviceException 
+{
+    friend class MasterDevice;
+
+    public:
+        uint16_t errorCode;
+    
+    protected:
+        /** Constructor with error code parameter. */
+        MasterDeviceSoeException(uint16_t code):
+            MasterDeviceException("SoE transfer aborted.") {
+                errorCode = code;
+            };
+};
+
+/****************************************************************************/
+
 class MasterDevice
 {
     public:
@@ -122,6 +140,7 @@
 #ifdef EC_EOE
         void getEoeHandler(ec_ioctl_eoe_handler_t *, uint16_t);
 #endif
+        void readSoe(ec_ioctl_slave_soe_t *);
 
         unsigned int getMasterCount() const {return masterCount;}
 
--- a/tool/main.cpp	Fri Feb 26 18:22:02 2010 +0100
+++ b/tool/main.cpp	Mon Mar 01 18:33:42 2010 +0100
@@ -56,6 +56,7 @@
 #include "CommandSiiRead.h"
 #include "CommandSiiWrite.h"
 #include "CommandSlaves.h"
+#include "CommandSoeRead.h"
 #include "CommandStates.h"
 #include "CommandUpload.h"
 #include "CommandVersion.h"
@@ -335,6 +336,7 @@
     commandList.push_back(new CommandSiiRead());
     commandList.push_back(new CommandSiiWrite());
     commandList.push_back(new CommandSlaves());
+    commandList.push_back(new CommandSoeRead());
     commandList.push_back(new CommandStates());
     commandList.push_back(new CommandUpload());
     commandList.push_back(new CommandVersion());