--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/master/foe_request.c	Mon Jan 19 10:18:41 2009 +0000
@@ -0,0 +1,201 @@
+/******************************************************************************
+ *
+ *  $Id:$
+ *
+ *  Copyright (C) 2008  Olav Zarges, imc Meßsysteme GmbH
+ *
+ *  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
+ *  as published by the Free Software Foundation; either version 2 of the
+ *  License, or (at your option) any later version.
+ *
+ *  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 right to use EtherCAT Technology is granted and comes free of
+ *  charge under condition of compatibility of product made by
+ *  Licensee. People intending to distribute/sell products based on the
+ *  code, have to sign an agreement to guarantee that products using
+ *  software based on IgH EtherCAT master stay compatible with the actual
+ *  EtherCAT specification (which are released themselves as an open
+ *  standard) as the (only) precondition to have the right to use EtherCAT
+ *  Technology, IP and trade marks.
+ *
+ *****************************************************************************/
+
+/** \file
+ * File-over-EtherCAT request functions.
+ */
+
+/*****************************************************************************/
+
+#include <linux/module.h>
+#include <linux/jiffies.h>
+
+#include "foe_request.h"
+
+/*****************************************************************************/
+
+/** Default timeout in ms to wait for FoE transfer responses.
+ */
+#define EC_FOE_REQUEST_RESPONSE_TIMEOUT 3000
+
+/*****************************************************************************/
+
+void ec_foe_request_clear_data(ec_foe_request_t *);
+
+/*****************************************************************************/
+
+/** FoE request constructor.
+ */
+void ec_foe_request_init(
+        ec_foe_request_t *req, /**< FoE request. */
+        uint8_t* file_name /** filename */)
+{
+    req->buffer = NULL;
+    req->file_name = file_name;
+    req->buffer_size = 0;
+    req->data_size = 0;
+    req->dir = EC_DIR_INVALID;
+    req->issue_timeout = 0; // no timeout
+    req->response_timeout = EC_FOE_REQUEST_RESPONSE_TIMEOUT;
+    req->state = EC_REQUEST_INIT;
+    req->abort_code = 0x00000000;
+}
+
+/*****************************************************************************/
+
+/** FoE request destructor.
+ */
+void ec_foe_request_clear(
+        ec_foe_request_t *req /**< FoE request. */
+        )
+{
+    ec_foe_request_clear_data(req);
+}
+
+/*****************************************************************************/
+
+/** FoE request destructor.
+ */
+void ec_foe_request_clear_data(
+        ec_foe_request_t *req /**< FoE request. */
+        )
+{
+    if (req->buffer) {
+        kfree(req->buffer);
+        req->buffer = NULL;
+    }
+
+    req->buffer_size = 0;
+    req->data_size = 0;
+}
+
+/*****************************************************************************/
+
+/** Pre-allocates the data memory.
+ *
+ * If the \a buffer_size is already bigger than \a size, nothing is done.
+ */
+int ec_foe_request_alloc(
+        ec_foe_request_t *req, /**< FoE request. */
+        size_t size /**< Data size to allocate. */
+        )
+{
+    if (size <= req->buffer_size)
+        return 0;
+
+    ec_foe_request_clear_data(req);
+
+    if (!(req->buffer = (uint8_t *) kmalloc(size, GFP_KERNEL))) {
+        EC_ERR("Failed to allocate %u bytes of FoE memory.\n", size);
+        return -1;
+    }
+
+    req->buffer_size = size;
+    req->data_size = 0;
+    return 0;
+}
+
+/*****************************************************************************/
+
+/** Copies FoE data from an external source.
+ *
+ * If the \a buffer_size is to small, new memory is allocated.
+ */
+int ec_foe_request_copy_data(
+        ec_foe_request_t *req, /**< FoE request. */
+        const uint8_t *source, /**< Source data. */
+        size_t size /**< Number of bytes in \a source. */
+        )
+{
+    if (ec_foe_request_alloc(req, size))
+        return -1;
+
+    memcpy(req->buffer, source, size);
+    req->data_size = size;
+    return 0;
+}
+
+/*****************************************************************************/
+
+/** Checks, if the timeout was exceeded.
+ *
+ * \return non-zero if the timeout was exceeded, else zero.
+ */
+int ec_foe_request_timed_out(const ec_foe_request_t *req /**< FoE request. */)
+{
+    return req->issue_timeout
+        && jiffies - req->jiffies_start > HZ * req->issue_timeout / 1000;
+}
+
+/*****************************************************************************/
+
+void ec_foe_request_timeout(ec_foe_request_t *req, uint32_t timeout)
+{
+    req->issue_timeout = timeout;
+}
+
+/*****************************************************************************/
+
+uint8_t *ec_foe_request_data(ec_foe_request_t *req)
+{
+    return req->buffer;
+}
+
+/*****************************************************************************/
+
+size_t ec_foe_request_data_size(const ec_foe_request_t *req)
+{
+    return req->data_size;
+}
+
+/*****************************************************************************/
+
+void ec_foe_request_read(ec_foe_request_t *req)
+{
+    req->dir = EC_DIR_INPUT;
+    req->state = EC_REQUEST_QUEUED;
+    req->abort_code = 0x00000000;
+    req->jiffies_start = jiffies;
+}
+
+/*****************************************************************************/
+
+void ec_foe_request_write(ec_foe_request_t *req)
+{
+    req->dir = EC_DIR_OUTPUT;
+    req->state = EC_REQUEST_QUEUED;
+    req->abort_code = 0x00000000;
+    req->jiffies_start = jiffies;
+}
+
+/*****************************************************************************/