2 * $Id: cu3088.c,v 1.34 2004/06/15 13:16:27 pavlic Exp $
4 * CTC / LCS ccw_device driver
6 * Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Author(s): Arnd Bergmann <arndb@de.ibm.com>
8 * Cornelia Huck <cohuck@de.ibm.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2, or (at your option)
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/init.h>
27 #include <linux/module.h>
28 #include <linux/err.h>
30 #include <asm/ccwdev.h>
31 #include <asm/ccwgroup.h>
35 const char *cu3088_type[] = {
42 "unknown channel type",
43 "unsupported channel type",
46 /* static definitions */
48 static struct ccw_device_id cu3088_ids[] = {
49 { CCW_DEVICE(0x3088, 0x08), .driver_info = channel_type_parallel },
50 { CCW_DEVICE(0x3088, 0x1f), .driver_info = channel_type_escon },
51 { CCW_DEVICE(0x3088, 0x1e), .driver_info = channel_type_ficon },
52 { CCW_DEVICE(0x3088, 0x01), .driver_info = channel_type_p390 },
53 { CCW_DEVICE(0x3088, 0x60), .driver_info = channel_type_osa2 },
57 static struct ccw_driver cu3088_driver;
59 struct device *cu3088_root_dev;
62 group_write(struct device_driver *drv, const char *buf, size_t count)
64 const char *start, *end;
65 char bus_ids[2][BUS_ID_SIZE], *argv[2];
68 struct ccwgroup_driver *cdrv;
70 cdrv = to_ccwgroupdrv(drv);
75 static const char delim[] = {',', '\n'};
78 if (!(end = strchr(start, delim[i])))
80 len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start + 1);
81 strlcpy (bus_ids[i], start, len);
86 ret = ccwgroup_create(cu3088_root_dev, cdrv->driver_id,
87 &cu3088_driver, 2, argv);
89 return (ret == 0) ? count : ret;
92 static DRIVER_ATTR(group, 0200, NULL, group_write);
94 /* Register-unregister for ctc&lcs */
96 register_cu3088_discipline(struct ccwgroup_driver *dcp)
103 /* Register discipline.*/
104 rc = ccwgroup_driver_register(dcp);
108 rc = driver_create_file(&dcp->driver, &driver_attr_group);
110 ccwgroup_driver_unregister(dcp);
117 unregister_cu3088_discipline(struct ccwgroup_driver *dcp)
122 driver_remove_file(&dcp->driver, &driver_attr_group);
123 ccwgroup_driver_unregister(dcp);
126 static struct ccw_driver cu3088_driver = {
127 .owner = THIS_MODULE,
130 .probe = ccwgroup_probe_ccwdev,
131 .remove = ccwgroup_remove_ccwdev,
140 cu3088_root_dev = s390_root_dev_register("cu3088");
141 if (IS_ERR(cu3088_root_dev))
142 return PTR_ERR(cu3088_root_dev);
143 rc = ccw_driver_register(&cu3088_driver);
145 s390_root_dev_unregister(cu3088_root_dev);
153 ccw_driver_unregister(&cu3088_driver);
154 s390_root_dev_unregister(cu3088_root_dev);
157 MODULE_DEVICE_TABLE(ccw,cu3088_ids);
158 MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>");
159 MODULE_LICENSE("GPL");
161 module_init(cu3088_init);
162 module_exit(cu3088_exit);
164 EXPORT_SYMBOL_GPL(cu3088_type);
165 EXPORT_SYMBOL_GPL(register_cu3088_discipline);
166 EXPORT_SYMBOL_GPL(unregister_cu3088_discipline);