diff -r a7a8ed41b50a -r 29af81543ce1 master/xmldev.c --- /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 + +#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; +} + +/*****************************************************************************/