--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/master/xmldev.c Tue Sep 19 13:28:40 2006 +0000
@@ -0,0 +1,147 @@
+/******************************************************************************
+ *
+ * $Id$
+ *
+ * Copyright (C) 2006 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
+ * 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
+ EtherCAT XML device.
+*/
+
+/*****************************************************************************/
+
+#include <linux/module.h>
+
+#include "master.h"
+#include "xmldev.h"
+
+/*****************************************************************************/
+
+static char *test_str = "hello world!\n";
+
+int ecxmldev_open(struct inode *, struct file *);
+int ecxmldev_release(struct inode *, struct file *);
+ssize_t ecxmldev_read(struct file *, char __user *, size_t, loff_t *);
+ssize_t ecxmldev_write(struct file *, const char __user *, size_t, loff_t *);
+
+/*****************************************************************************/
+
+static struct file_operations fops = {
+ .owner = THIS_MODULE,
+ .open = ecxmldev_open,
+ .release = ecxmldev_release,
+ .read = ecxmldev_read,
+ .write = ecxmldev_write
+};
+
+/*****************************************************************************/
+
+/**
+ XML device constructor.
+ \return 0 in case of success, else < 0
+*/
+
+int ec_xmldev_init(ec_xmldev_t *xmldev, /**< EtherCAT XML device */
+ ec_master_t *master, /**< EtherCAT master */
+ dev_t dev_num /**< device number */
+ )
+{
+ cdev_init(&xmldev->cdev, &fops);
+ xmldev->cdev.owner = THIS_MODULE;
+ if (cdev_add(&xmldev->cdev,
+ MKDEV(MAJOR(dev_num), master->index), 1)) {
+ EC_ERR("Failed to add character device!\n");
+ return -1;
+ }
+ return 0;
+}
+
+/*****************************************************************************/
+
+/**
+ XML device destructor.
+*/
+
+void ec_xmldev_clear(ec_xmldev_t *xmldev /**< EtherCAT XML device */)
+{
+ cdev_del(&xmldev->cdev);
+}
+
+/*****************************************************************************/
+
+int ecxmldev_open(struct inode *inode, struct file *filp)
+{
+ ec_xmldev_t *xmldev;
+
+ xmldev = container_of(inode->i_cdev, ec_xmldev_t, cdev);
+ filp->private_data = xmldev;
+
+ EC_DBG("File opened.\n");
+
+ return 0;
+}
+
+/*****************************************************************************/
+
+int ecxmldev_release(struct inode *inode, struct file *filp)
+{
+ EC_DBG("File closed.\n");
+ return 0;
+}
+
+/*****************************************************************************/
+
+ssize_t ecxmldev_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *f_pos)
+{
+ size_t len = strlen(test_str);
+
+ if (*f_pos >= len) return 0;
+ if (*f_pos + count > len) count = len - *f_pos;
+
+ if (copy_to_user(buf, test_str + *f_pos, count)) return -EFAULT;
+
+ *f_pos += count;
+
+ return count;
+}
+
+/*****************************************************************************/
+
+ssize_t ecxmldev_write(struct file *filp,
+ const char __user *buf,
+ size_t count,
+ loff_t *f_pos)
+{
+ return -EFAULT;
+}
+
+/*****************************************************************************/