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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/s390/net/cu3088.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/s390/net/cu3088.c')
-rw-r--r--drivers/s390/net/cu3088.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/drivers/s390/net/cu3088.c b/drivers/s390/net/cu3088.c
new file mode 100644
index 000000000000..1b0a9f16024c
--- /dev/null
+++ b/drivers/s390/net/cu3088.c
@@ -0,0 +1,166 @@
1/*
2 * $Id: cu3088.c,v 1.34 2004/06/15 13:16:27 pavlic Exp $
3 *
4 * CTC / LCS ccw_device driver
5 *
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>
9 *
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)
13 * any later version.
14 *
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.
19 *
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.
23 *
24 */
25
26#include <linux/init.h>
27#include <linux/module.h>
28#include <linux/err.h>
29
30#include <asm/ccwdev.h>
31#include <asm/ccwgroup.h>
32
33#include "cu3088.h"
34
35const char *cu3088_type[] = {
36 "not a channel",
37 "CTC/A",
38 "ESCON channel",
39 "FICON channel",
40 "P390 LCS card",
41 "OSA LCS card",
42 "unknown channel type",
43 "unsupported channel type",
44};
45
46/* static definitions */
47
48static 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 },
54 { /* end of list */ }
55};
56
57static struct ccw_driver cu3088_driver;
58
59struct device *cu3088_root_dev;
60
61static ssize_t
62group_write(struct device_driver *drv, const char *buf, size_t count)
63{
64 const char *start, *end;
65 char bus_ids[2][BUS_ID_SIZE], *argv[2];
66 int i;
67 int ret;
68 struct ccwgroup_driver *cdrv;
69
70 cdrv = to_ccwgroupdrv(drv);
71 if (!cdrv)
72 return -EINVAL;
73 start = buf;
74 for (i=0; i<2; i++) {
75 static const char delim[] = {',', '\n'};
76 int len;
77
78 if (!(end = strchr(start, delim[i])))
79 return count;
80 len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start + 1);
81 strlcpy (bus_ids[i], start, len);
82 argv[i] = bus_ids[i];
83 start = end + 1;
84 }
85
86 ret = ccwgroup_create(cu3088_root_dev, cdrv->driver_id,
87 &cu3088_driver, 2, argv);
88
89 return (ret == 0) ? count : ret;
90}
91
92static DRIVER_ATTR(group, 0200, NULL, group_write);
93
94/* Register-unregister for ctc&lcs */
95int
96register_cu3088_discipline(struct ccwgroup_driver *dcp)
97{
98 int rc;
99
100 if (!dcp)
101 return -EINVAL;
102
103 /* Register discipline.*/
104 rc = ccwgroup_driver_register(dcp);
105 if (rc)
106 return rc;
107
108 rc = driver_create_file(&dcp->driver, &driver_attr_group);
109 if (rc)
110 ccwgroup_driver_unregister(dcp);
111
112 return rc;
113
114}
115
116void
117unregister_cu3088_discipline(struct ccwgroup_driver *dcp)
118{
119 if (!dcp)
120 return;
121
122 driver_remove_file(&dcp->driver, &driver_attr_group);
123 ccwgroup_driver_unregister(dcp);
124}
125
126static struct ccw_driver cu3088_driver = {
127 .owner = THIS_MODULE,
128 .ids = cu3088_ids,
129 .name = "cu3088",
130 .probe = ccwgroup_probe_ccwdev,
131 .remove = ccwgroup_remove_ccwdev,
132};
133
134/* module setup */
135static int __init
136cu3088_init (void)
137{
138 int rc;
139
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);
144 if (rc)
145 s390_root_dev_unregister(cu3088_root_dev);
146
147 return rc;
148}
149
150static void __exit
151cu3088_exit (void)
152{
153 ccw_driver_unregister(&cu3088_driver);
154 s390_root_dev_unregister(cu3088_root_dev);
155}
156
157MODULE_DEVICE_TABLE(ccw,cu3088_ids);
158MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>");
159MODULE_LICENSE("GPL");
160
161module_init(cu3088_init);
162module_exit(cu3088_exit);
163
164EXPORT_SYMBOL_GPL(cu3088_type);
165EXPORT_SYMBOL_GPL(register_cu3088_discipline);
166EXPORT_SYMBOL_GPL(unregister_cu3088_discipline);