diff -r ef09f0ea0c4c -r 1875b9fea0ba master/soe_request.c
--- /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;
+}
+
+/*****************************************************************************/