/* *	Bus Adapter OSM * *	Copyright (C) 2005	Markus Lidel <Markus.Lidel@shadowconnect.com> * *	This program 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. * *	Fixes/additions: *		Markus Lidel <Markus.Lidel@shadowconnect.com> *			initial version. */#include <linux/module.h>#include <linux/i2o.h>#define OSM_NAME	"bus-osm"#define OSM_VERSION	"$Rev$"#define OSM_DESCRIPTION	"I2O Bus Adapter OSM"static struct i2o_driver i2o_bus_driver;/* Bus OSM class handling definition */static struct i2o_class_id i2o_bus_class_id[] = {	{I2O_CLASS_BUS_ADAPTER},	{I2O_CLASS_END}};/** *	i2o_bus_scan - Scan the bus for new devices *	@dev: I2O device of the bus, which should be scanned * *	Scans the bus dev for new / removed devices. After the scan a new LCT *	will be fetched automatically. * *	Returns 0 on success or negative error code on failure. */static int i2o_bus_scan(struct i2o_device *dev){	struct i2o_message __iomem *msg;	u32 m;	m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);	if (m == I2O_QUEUE_EMPTY)		return -ETIMEDOUT;	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);	writel(I2O_CMD_BUS_SCAN << 24 | HOST_TID << 12 | dev->lct_data.tid,	       &msg->u.head[1]);	return i2o_msg_post_wait(dev->iop, m, 60);};/** *	i2o_bus_store_scan - Scan the I2O Bus Adapter *	@d: device which should be scanned * *	Returns count. */static ssize_t i2o_bus_store_scan(struct device *d, struct device_attribute *attr, const char *buf,				  size_t count){	struct i2o_device *i2o_dev = to_i2o_device(d);	int rc;	if ((rc = i2o_bus_scan(i2o_dev)))		osm_warn("bus scan failed %d\n", rc);	return count;}/* Bus Adapter OSM device attributes */static DEVICE_ATTR(scan, S_IWUSR, NULL, i2o_bus_store_scan);/** *	i2o_bus_probe - verify if dev is a I2O Bus Adapter device and install it *	@dev: device to verify if it is a I2O Bus Adapter device * *	Because we want all Bus Adapters always return 0. * *	Returns 0. */static int i2o_bus_probe(struct device *dev){	struct i2o_device *i2o_dev = to_i2o_device(get_device(dev));	device_create_file(dev, &dev_attr_scan);	osm_info("device added (TID: %03x)\n", i2o_dev->lct_data.tid);	return 0;};/** *	i2o_bus_remove - remove the I2O Bus Adapter device from the system again *	@dev: I2O Bus Adapter device which should be removed * *	Always returns 0. */static int i2o_bus_remove(struct device *dev){	struct i2o_device *i2o_dev = to_i2o_device(dev);	device_remove_file(dev, &dev_attr_scan);	put_device(dev);	osm_info("device removed (TID: %03x)\n", i2o_dev->lct_data.tid);	return 0;};/* Bus Adapter OSM driver struct */static struct i2o_driver i2o_bus_driver = {	.name = OSM_NAME,	.classes = i2o_bus_class_id,	.driver = {		   .probe = i2o_bus_probe,		   .remove = i2o_bus_remove,		   },};/** *	i2o_bus_init - Bus Adapter OSM initialization function * *	Only register the Bus Adapter OSM in the I2O core. * *	Returns 0 on success or negative error code on failure. */static int __init i2o_bus_init(void){	int rc;	printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");	/* Register Bus Adapter OSM into I2O core */	rc = i2o_driver_register(&i2o_bus_driver);	if (rc) {		osm_err("Could not register Bus Adapter OSM\n");		return rc;	}	return 0;};/** *	i2o_bus_exit - Bus Adapter OSM exit function * *	Unregisters Bus Adapter OSM from I2O core. */static void __exit i2o_bus_exit(void){	i2o_driver_unregister(&i2o_bus_driver);};MODULE_AUTHOR("Markus Lidel <Markus.Lidel@shadowconnect.com>");MODULE_LICENSE("GPL");MODULE_DESCRIPTION(OSM_DESCRIPTION);MODULE_VERSION(OSM_VERSION);module_init(i2o_bus_init);module_exit(i2o_bus_exit);