Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
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> | |
4ce3b30c | 6 | * Cornelia Huck <cornelia.huck@de.ibm.com> |
1da177e4 LT |
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 | */ | |
e82b0f2c | 23 | |
1da177e4 LT |
24 | #include <linux/init.h> |
25 | #include <linux/module.h> | |
26 | #include <linux/err.h> | |
27 | ||
cfb1b555 | 28 | #include <asm/s390_rdev.h> |
1da177e4 LT |
29 | #include <asm/ccwdev.h> |
30 | #include <asm/ccwgroup.h> | |
31 | ||
32 | #include "cu3088.h" | |
33 | ||
34 | const char *cu3088_type[] = { | |
35 | "not a channel", | |
36 | "CTC/A", | |
37 | "ESCON channel", | |
38 | "FICON channel", | |
39 | "P390 LCS card", | |
40 | "OSA LCS card", | |
321de3c8 | 41 | "CLAW channel device", |
1da177e4 LT |
42 | "unknown channel type", |
43 | "unsupported channel type", | |
44 | }; | |
45 | ||
46 | /* static definitions */ | |
47 | ||
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 }, | |
321de3c8 | 54 | { CCW_DEVICE(0x3088, 0x61), .driver_info = channel_type_claw }, |
1da177e4 LT |
55 | { /* end of list */ } |
56 | }; | |
57 | ||
58 | static struct ccw_driver cu3088_driver; | |
59 | ||
2b67fc46 | 60 | static struct device *cu3088_root_dev; |
1da177e4 LT |
61 | |
62 | static ssize_t | |
63 | group_write(struct device_driver *drv, const char *buf, size_t count) | |
64 | { | |
1da177e4 LT |
65 | int ret; |
66 | struct ccwgroup_driver *cdrv; | |
67 | ||
68 | cdrv = to_ccwgroupdrv(drv); | |
69 | if (!cdrv) | |
70 | return -EINVAL; | |
022b660a UB |
71 | ret = ccwgroup_create_from_string(cu3088_root_dev, cdrv->driver_id, |
72 | &cu3088_driver, 2, buf); | |
1da177e4 LT |
73 | |
74 | return (ret == 0) ? count : ret; | |
75 | } | |
76 | ||
77 | static DRIVER_ATTR(group, 0200, NULL, group_write); | |
78 | ||
79 | /* Register-unregister for ctc&lcs */ | |
80 | int | |
e82b0f2c | 81 | register_cu3088_discipline(struct ccwgroup_driver *dcp) |
1da177e4 LT |
82 | { |
83 | int rc; | |
84 | ||
85 | if (!dcp) | |
86 | return -EINVAL; | |
87 | ||
88 | /* Register discipline.*/ | |
89 | rc = ccwgroup_driver_register(dcp); | |
90 | if (rc) | |
91 | return rc; | |
92 | ||
93 | rc = driver_create_file(&dcp->driver, &driver_attr_group); | |
94 | if (rc) | |
95 | ccwgroup_driver_unregister(dcp); | |
e82b0f2c | 96 | |
1da177e4 LT |
97 | return rc; |
98 | ||
99 | } | |
100 | ||
101 | void | |
102 | unregister_cu3088_discipline(struct ccwgroup_driver *dcp) | |
103 | { | |
104 | if (!dcp) | |
105 | return; | |
106 | ||
107 | driver_remove_file(&dcp->driver, &driver_attr_group); | |
108 | ccwgroup_driver_unregister(dcp); | |
109 | } | |
110 | ||
111 | static struct ccw_driver cu3088_driver = { | |
112 | .owner = THIS_MODULE, | |
113 | .ids = cu3088_ids, | |
114 | .name = "cu3088", | |
115 | .probe = ccwgroup_probe_ccwdev, | |
116 | .remove = ccwgroup_remove_ccwdev, | |
117 | }; | |
118 | ||
119 | /* module setup */ | |
120 | static int __init | |
121 | cu3088_init (void) | |
122 | { | |
123 | int rc; | |
e82b0f2c | 124 | |
1da177e4 LT |
125 | cu3088_root_dev = s390_root_dev_register("cu3088"); |
126 | if (IS_ERR(cu3088_root_dev)) | |
127 | return PTR_ERR(cu3088_root_dev); | |
128 | rc = ccw_driver_register(&cu3088_driver); | |
129 | if (rc) | |
130 | s390_root_dev_unregister(cu3088_root_dev); | |
131 | ||
132 | return rc; | |
133 | } | |
134 | ||
135 | static void __exit | |
136 | cu3088_exit (void) | |
137 | { | |
138 | ccw_driver_unregister(&cu3088_driver); | |
139 | s390_root_dev_unregister(cu3088_root_dev); | |
140 | } | |
141 | ||
142 | MODULE_DEVICE_TABLE(ccw,cu3088_ids); | |
143 | MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>"); | |
144 | MODULE_LICENSE("GPL"); | |
145 | ||
146 | module_init(cu3088_init); | |
147 | module_exit(cu3088_exit); | |
148 | ||
149 | EXPORT_SYMBOL_GPL(cu3088_type); | |
150 | EXPORT_SYMBOL_GPL(register_cu3088_discipline); | |
151 | EXPORT_SYMBOL_GPL(unregister_cu3088_discipline); |