1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* $Id: cu3088.c,v 1.34 2004/06/15 13:16:27 pavlic Exp $
*
* CTC / LCS ccw_device driver
*
* Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Arnd Bergmann <arndb@de.ibm.com>
* Cornelia Huck <cohuck@de.ibm.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, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/err.h>
#include <asm/ccwdev.h>
#include <asm/ccwgroup.h>
#include "cu3088.h"
const char *cu3088_type[] = {
"not a channel",
"CTC/A",
"ESCON channel",
"FICON channel",
"P390 LCS card",
"OSA LCS card",
"unknown channel type",
"unsupported channel type",
};
/* static definitions */
static struct ccw_device_id cu3088_ids[] = {
{ CCW_DEVICE(0x3088, 0x08), .driver_info = channel_type_parallel },
{ CCW_DEVICE(0x3088, 0x1f), .driver_info = channel_type_escon },
{ CCW_DEVICE(0x3088, 0x1e), .driver_info = channel_type_ficon },
{ CCW_DEVICE(0x3088, 0x01), .driver_info = channel_type_p390 },
{ CCW_DEVICE(0x3088, 0x60), .driver_info = channel_type_osa2 },
{ /* end of list */ }
};
static struct ccw_driver cu3088_driver;
struct device *cu3088_root_dev;
static ssize_t
group_write(struct device_driver *drv, const char *buf, size_t count)
{
const char *start, *end;
char bus_ids[2][BUS_ID_SIZE], *argv[2];
int i;
int ret;
struct ccwgroup_driver *cdrv;
cdrv = to_ccwgroupdrv(drv);
if (!cdrv)
return -EINVAL;
start = buf;
for (i=0; i<2; i++) {
static const char delim[] = {',', '\n'};
int len;
if (!(end = strchr(start, delim[i])))
return count;
len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start + 1);
strlcpy (bus_ids[i], start, len);
argv[i] = bus_ids[i];
start = end + 1;
}
ret = ccwgroup_create(cu3088_root_dev, cdrv->driver_id,
&cu3088_driver, 2, argv);
return (ret == 0) ? count : ret;
}
static DRIVER_ATTR(group, 0200, NULL, group_write);
/* Register-unregister for ctc&lcs */
int
register_cu3088_discipline(struct ccwgroup_driver *dcp)
{
int rc;
if (!dcp)
return -EINVAL;
/* Register discipline.*/
rc = ccwgroup_driver_register(dcp);
if (rc)
return rc;
rc = driver_create_file(&dcp->driver, &driver_attr_group);
if (rc)
ccwgroup_driver_unregister(dcp);
return rc;
}
void
unregister_cu3088_discipline(struct ccwgroup_driver *dcp)
{
if (!dcp)
return;
driver_remove_file(&dcp->driver, &driver_attr_group);
ccwgroup_driver_unregister(dcp);
}
static struct ccw_driver cu3088_driver = {
.owner = THIS_MODULE,
.ids = cu3088_ids,
.name = "cu3088",
.probe = ccwgroup_probe_ccwdev,
.remove = ccwgroup_remove_ccwdev,
};
/* module setup */
static int __init
cu3088_init (void)
{
int rc;
cu3088_root_dev = s390_root_dev_register("cu3088");
if (IS_ERR(cu3088_root_dev))
return PTR_ERR(cu3088_root_dev);
rc = ccw_driver_register(&cu3088_driver);
if (rc)
s390_root_dev_unregister(cu3088_root_dev);
return rc;
}
static void __exit
cu3088_exit (void)
{
ccw_driver_unregister(&cu3088_driver);
s390_root_dev_unregister(cu3088_root_dev);
}
MODULE_DEVICE_TABLE(ccw,cu3088_ids);
MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>");
MODULE_LICENSE("GPL");
module_init(cu3088_init);
module_exit(cu3088_exit);
EXPORT_SYMBOL_GPL(cu3088_type);
EXPORT_SYMBOL_GPL(register_cu3088_discipline);
EXPORT_SYMBOL_GPL(unregister_cu3088_discipline);
|
