Changeset d51ee2b in mainline for uspace/srv/devman/devman.c

Timestamp:

2010-05-21T13:59:09Z (14 years ago)

Author:

Lenka Trochtova <trochtova.lenka@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

957cfa58

Parents:

c47e1a8

Message:

parts of supporting code for the dynamic device classes

File:

• uspace/srv/devman/devman.c (modified) (1 diff)

uspace/srv/devman/devman.c

@@ -736 +736 @@
 }
 
+/** Create unique device name within the class. 
+ * 
+ * @param cl the class.
+ * @param base_dev_name contains base name for the device 
+ * if it was specified by the driver when it registered the device by the class; 
+ * NULL if driver specified no base name.
+ * @return the unique name for the device within the class.
+ */
+char * create_dev_name_for_class(dev_class_t *cl, const char *base_dev_name)
+{
+        char *dev_name;
+        const char *base_name;
+        if (NULL != base_dev_name) {
+                base_name = base_dev_name;
+        } else {
+                base_name = cl->base_dev_name;
+        }
+        
+        size_t idx = get_new_class_dev_idx(cl);
+        asprintf(&dev_name, "%s%d", base_name, idx);
+        return dev_name;        
+}
+
+/** Add the device to the class.
+ * 
+ * The device may be added to multiple classes and a class may contain multiple devices.
+ * The class and the device are associated with each other by the dev_class_info_t structure.
+ * 
+ * @param dev the device.
+ * @param class the class.
+ * @param base_dev_name the base name of the device within the class if specified by the driver,
+ * NULL otherwise.
+ * @return dev_class_info_t structure which associates the device with the class.
+ */
+dev_class_info_t * add_device_to_class(node_t *dev, dev_class_t *cl, const char *base_dev_name)
+{
+        dev_class_info_t *info = create_dev_class_info();
+        info->dev_class = cl;
+        info->dev = dev;
+        
+        // add the device to the class
+        fibril_mutex_lock(&cl->mutex);
+        list_append(&info->link, &cl->devices);
+        fibril_mutex_unlock(&cl->mutex);
+        
+        // add the class to the device
+        list_append(&info->dev_classes, &dev->classes);
+        
+        // create unique name for the device within the class
+        info->dev_name = create_dev_name_for_class(cl, base_dev_name);  
+        
+        return info;
+}
+
 /** @}
  */