4 * Copyright (C) 2005 Markus Lidel <Markus.Lidel@shadowconnect.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
12 * Markus Lidel <Markus.Lidel@shadowconnect.com>
16 #include <linux/module.h>
17 #include <linux/i2o.h>
19 #define OSM_NAME "bus-osm"
20 #define OSM_VERSION "1.317"
21 #define OSM_DESCRIPTION "I2O Bus Adapter OSM"
23 static struct i2o_driver i2o_bus_driver
;
25 /* Bus OSM class handling definition */
26 static struct i2o_class_id i2o_bus_class_id
[] = {
27 {I2O_CLASS_BUS_ADAPTER
},
32 * i2o_bus_scan - Scan the bus for new devices
33 * @dev: I2O device of the bus, which should be scanned
35 * Scans the bus dev for new / removed devices. After the scan a new LCT
36 * will be fetched automatically.
38 * Returns 0 on success or negative error code on failure.
40 static int i2o_bus_scan(struct i2o_device
*dev
)
42 struct i2o_message
*msg
;
44 msg
= i2o_msg_get_wait(dev
->iop
, I2O_TIMEOUT_MESSAGE_GET
);
48 msg
->u
.head
[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE
| SGL_OFFSET_0
);
50 cpu_to_le32(I2O_CMD_BUS_SCAN
<< 24 | HOST_TID
<< 12 | dev
->lct_data
.
53 return i2o_msg_post_wait(dev
->iop
, msg
, 60);
57 * i2o_bus_store_scan - Scan the I2O Bus Adapter
58 * @d: device which should be scanned
62 static ssize_t
i2o_bus_store_scan(struct device
*d
,
63 struct device_attribute
*attr
,
64 const char *buf
, size_t count
)
66 struct i2o_device
*i2o_dev
= to_i2o_device(d
);
69 if ((rc
= i2o_bus_scan(i2o_dev
)))
70 osm_warn("bus scan failed %d\n", rc
);
75 /* Bus Adapter OSM device attributes */
76 static DEVICE_ATTR(scan
, S_IWUSR
, NULL
, i2o_bus_store_scan
);
79 * i2o_bus_probe - verify if dev is a I2O Bus Adapter device and install it
80 * @dev: device to verify if it is a I2O Bus Adapter device
82 * Because we want all Bus Adapters always return 0.
86 static int i2o_bus_probe(struct device
*dev
)
88 struct i2o_device
*i2o_dev
= to_i2o_device(get_device(dev
));
90 device_create_file(dev
, &dev_attr_scan
);
92 osm_info("device added (TID: %03x)\n", i2o_dev
->lct_data
.tid
);
98 * i2o_bus_remove - remove the I2O Bus Adapter device from the system again
99 * @dev: I2O Bus Adapter device which should be removed
103 static int i2o_bus_remove(struct device
*dev
)
105 struct i2o_device
*i2o_dev
= to_i2o_device(dev
);
107 device_remove_file(dev
, &dev_attr_scan
);
111 osm_info("device removed (TID: %03x)\n", i2o_dev
->lct_data
.tid
);
116 /* Bus Adapter OSM driver struct */
117 static struct i2o_driver i2o_bus_driver
= {
119 .classes
= i2o_bus_class_id
,
121 .probe
= i2o_bus_probe
,
122 .remove
= i2o_bus_remove
,
127 * i2o_bus_init - Bus Adapter OSM initialization function
129 * Only register the Bus Adapter OSM in the I2O core.
131 * Returns 0 on success or negative error code on failure.
133 static int __init
i2o_bus_init(void)
137 printk(KERN_INFO OSM_DESCRIPTION
" v" OSM_VERSION
"\n");
139 /* Register Bus Adapter OSM into I2O core */
140 rc
= i2o_driver_register(&i2o_bus_driver
);
142 osm_err("Could not register Bus Adapter OSM\n");
150 * i2o_bus_exit - Bus Adapter OSM exit function
152 * Unregisters Bus Adapter OSM from I2O core.
154 static void __exit
i2o_bus_exit(void)
156 i2o_driver_unregister(&i2o_bus_driver
);
159 MODULE_AUTHOR("Markus Lidel <Markus.Lidel@shadowconnect.com>");
160 MODULE_LICENSE("GPL");
161 MODULE_DESCRIPTION(OSM_DESCRIPTION
);
162 MODULE_VERSION(OSM_VERSION
);
164 module_init(i2o_bus_init
);
165 module_exit(i2o_bus_exit
);