s390: remove s390_root_dev_*()
[linux-3.10.git] / drivers / s390 / net / cu3088.c
1 /*
2  * CTC / LCS ccw_device driver
3  *
4  * Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
5  * Author(s): Arnd Bergmann <arndb@de.ibm.com>
6  *            Cornelia Huck <cornelia.huck@de.ibm.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2, or (at your option)
11  * any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  *
22  */
23
24 #include <linux/init.h>
25 #include <linux/module.h>
26 #include <linux/err.h>
27
28 #include <asm/ccwdev.h>
29 #include <asm/ccwgroup.h>
30
31 #include "cu3088.h"
32
33 const char *cu3088_type[] = {
34         "not a channel",
35         "CTC/A",
36         "ESCON channel",
37         "FICON channel",
38         "OSA LCS card",
39         "CLAW channel device",
40         "unknown channel type",
41         "unsupported channel type",
42 };
43
44 /* static definitions */
45
46 static struct ccw_device_id cu3088_ids[] = {
47         { CCW_DEVICE(0x3088, 0x08), .driver_info = channel_type_parallel },
48         { CCW_DEVICE(0x3088, 0x1f), .driver_info = channel_type_escon },
49         { CCW_DEVICE(0x3088, 0x1e), .driver_info = channel_type_ficon },
50         { CCW_DEVICE(0x3088, 0x60), .driver_info = channel_type_osa2 },
51         { CCW_DEVICE(0x3088, 0x61), .driver_info = channel_type_claw },
52         { /* end of list */ }
53 };
54
55 static struct ccw_driver cu3088_driver;
56
57 static struct device *cu3088_root_dev;
58
59 static ssize_t
60 group_write(struct device_driver *drv, const char *buf, size_t count)
61 {
62         int ret;
63         struct ccwgroup_driver *cdrv;
64
65         cdrv = to_ccwgroupdrv(drv);
66         if (!cdrv)
67                 return -EINVAL;
68         ret = ccwgroup_create_from_string(cu3088_root_dev, cdrv->driver_id,
69                                           &cu3088_driver, 2, buf);
70
71         return (ret == 0) ? count : ret;
72 }
73
74 static DRIVER_ATTR(group, 0200, NULL, group_write);
75
76 /* Register-unregister for ctc&lcs */
77 int
78 register_cu3088_discipline(struct ccwgroup_driver *dcp)
79 {
80         int rc;
81
82         if (!dcp)
83                 return -EINVAL;
84
85         /* Register discipline.*/
86         rc = ccwgroup_driver_register(dcp);
87         if (rc)
88                 return rc;
89
90         rc = driver_create_file(&dcp->driver, &driver_attr_group);
91         if (rc)
92                 ccwgroup_driver_unregister(dcp);
93
94         return rc;
95
96 }
97
98 void
99 unregister_cu3088_discipline(struct ccwgroup_driver *dcp)
100 {
101         if (!dcp)
102                 return;
103
104         driver_remove_file(&dcp->driver, &driver_attr_group);
105         ccwgroup_driver_unregister(dcp);
106 }
107
108 static struct ccw_driver cu3088_driver = {
109         .owner       = THIS_MODULE,
110         .ids         = cu3088_ids,
111         .name        = "cu3088",
112         .probe       = ccwgroup_probe_ccwdev,
113         .remove      = ccwgroup_remove_ccwdev,
114 };
115
116 /* module setup */
117 static int __init
118 cu3088_init (void)
119 {
120         int rc;
121
122         cu3088_root_dev = root_device_register("cu3088");
123         if (IS_ERR(cu3088_root_dev))
124                 return PTR_ERR(cu3088_root_dev);
125         rc = ccw_driver_register(&cu3088_driver);
126         if (rc)
127                 root_device_unregister(cu3088_root_dev);
128
129         return rc;
130 }
131
132 static void __exit
133 cu3088_exit (void)
134 {
135         ccw_driver_unregister(&cu3088_driver);
136         root_device_unregister(cu3088_root_dev);
137 }
138
139 MODULE_DEVICE_TABLE(ccw,cu3088_ids);
140 MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>");
141 MODULE_LICENSE("GPL");
142
143 module_init(cu3088_init);
144 module_exit(cu3088_exit);
145
146 EXPORT_SYMBOL_GPL(cu3088_type);
147 EXPORT_SYMBOL_GPL(register_cu3088_discipline);
148 EXPORT_SYMBOL_GPL(unregister_cu3088_discipline);