--- a/master/module.c Tue Feb 20 09:43:23 2007 +0000
+++ b/master/module.c Tue Feb 20 11:28:15 2007 +0000
@@ -52,7 +52,36 @@
int __init ec_init_module(void);
void __exit ec_cleanup_module(void);
-/*****************************************************************************/
+ssize_t ec_show_attribute(struct kobject *, struct attribute *, char *);
+
+/*****************************************************************************/
+
+/** \cond */
+
+EC_SYSFS_READ_ATTR(info);
+
+static struct attribute *ec_def_attrs[] = {
+ &attr_info,
+ NULL,
+};
+
+static struct sysfs_ops ec_sysfs_ops = {
+ .show = &ec_show_attribute,
+ .store = NULL
+};
+
+static struct kobj_type ktype_ec_module = {
+ .release = NULL, // this is ok, because the module can not be unloaded
+ // if the reference count is greater zero.
+ .sysfs_ops = &ec_sysfs_ops,
+ .default_attrs = ec_def_attrs
+};
+
+/** \endcond */
+
+/*****************************************************************************/
+
+struct kobject ec_kobj; /**< kobject for master module */
static char *main; /**< main devices parameter */
static char *backup; /**< backup devices parameter */
@@ -97,9 +126,24 @@
EC_INFO("Master driver %s\n", EC_MASTER_VERSION);
+ // init kobject and add it to the hierarchy
+ memset(&ec_kobj, 0x00, sizeof(struct kobject));
+ kobject_init(&ec_kobj);
+ ec_kobj.ktype = &ktype_ec_module;
+
+ if (kobject_set_name(&ec_kobj, "ethercat")) {
+ EC_ERR("Failed to set module kobject name.\n");
+ goto out_put;
+ }
+
+ if (kobject_add(&ec_kobj)) {
+ EC_ERR("Failed to add module kobject.\n");
+ goto out_put;
+ }
+
if (alloc_chrdev_region(&device_number, 0, 1, "EtherCAT")) {
EC_ERR("Failed to obtain device number!\n");
- goto out_return;
+ goto out_del;
}
if (ec_device_id_process_params(main, backup, &main_ids, &backup_ids))
@@ -121,7 +165,7 @@
goto out_free_masters;
}
- if (ec_master_init(master, master_index,
+ if (ec_master_init(master, &ec_kobj, master_index,
main_dev_id, backup_dev_id, 0))
goto out_free_masters;
@@ -153,7 +197,10 @@
ec_device_id_clear_list(&backup_ids);
out_cdev:
unregister_chrdev_region(device_number, 1);
-out_return:
+out_del:
+ kobject_del(&ec_kobj);
+out_put:
+ kobject_put(&ec_kobj);
return -1;
}
@@ -178,6 +225,8 @@
ec_device_id_clear_list(&main_ids);
ec_device_id_clear_list(&backup_ids);
unregister_chrdev_region(device_number, 1);
+ kobject_del(&ec_kobj);
+ kobject_put(&ec_kobj);
EC_INFO("Master module cleaned up.\n");
}
@@ -185,6 +234,42 @@
/*****************************************************************************/
/**
+ Formats module information for SysFS read access.
+ \return number of bytes written
+*/
+
+ssize_t ec_info(char *buffer /**< memory to store data */)
+{
+ off_t off = 0;
+
+ off += sprintf(buffer + off, "\nVersion: %s", ec_master_version_str);
+ off += sprintf(buffer + off, "\n");
+
+ return off;
+}
+
+/*****************************************************************************/
+
+/**
+ Formats attribute data for SysFS read access.
+ \return number of bytes to read
+*/
+
+ssize_t ec_show_attribute(struct kobject *kobj, /**< kobject */
+ struct attribute *attr, /**< attribute */
+ char *buffer /**< memory to store data */
+ )
+{
+ if (attr == &attr_info)
+ return ec_info(buffer);
+
+ return 0;
+}
+
+
+/*****************************************************************************/
+
+/**
Gets a handle to a certain master.
\returns pointer to master
*/