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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/**
* @file me1000_device.c
*
* @brief ME-1000 device class implementation.
* @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
* @author Guenter Gebhardt
* @author Krzysztof Gantzke (k.gantzke@meilhaus.de)
*/
/*
* Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
*
* This file 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 of the License, 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.
*/
#ifndef __KERNEL__
# define __KERNEL__
#endif
#ifndef MODULE
# define MODULE
#endif
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include "meids.h"
#include "meerror.h"
#include "mecommon.h"
#include "meinternal.h"
#include "medebug.h"
#include "medevice.h"
#include "me1000_device.h"
#include "mesubdevice.h"
#include "me1000_dio.h"
static int me1000_config_load(me_device_t * me_device, struct file *filep,
me_cfg_device_entry_t * config)
{
me1000_device_t *me1000_device;
me1000_dio_subdevice_t *dio;
PDEBUG("executed.\n");
me1000_device = (me1000_device_t *) me_device;
if (config->count == 2) {
if (me_slist_get_number_subdevices(&me1000_device->base.slist)
== 2) {
// Nothing to do.
} else {
// Remove 2 extra subdevices
dio =
(me1000_dio_subdevice_t *)
me_slist_del_subdevice_tail(&me1000_device->base.
slist);
if (dio)
dio->base.
me_subdevice_destructor((me_subdevice_t *)
dio);
dio =
(me1000_dio_subdevice_t *)
me_slist_del_subdevice_tail(&me1000_device->base.
slist);
if (dio)
dio->base.
me_subdevice_destructor((me_subdevice_t *)
dio);
}
} else if (config->count == 4) {
//Add 2 subdevices
if (me_slist_get_number_subdevices(&me1000_device->base.slist)
== 2) {
dio =
me1000_dio_constructor(me1000_device->base.info.pci.
reg_bases[2], 2,
&me1000_device->ctrl_lock);
if (!dio) {
PERROR("Cannot create dio subdevice.\n");
return ME_ERRNO_INTERNAL;
}
me_slist_add_subdevice_tail(&me1000_device->base.slist,
(me_subdevice_t *) dio);
dio =
me1000_dio_constructor(me1000_device->base.info.pci.
reg_bases[2], 3,
&me1000_device->ctrl_lock);
if (!dio) {
dio =
(me1000_dio_subdevice_t *)
me_slist_del_subdevice_tail(&me1000_device->
base.slist);
if (dio)
dio->base.
me_subdevice_destructor((me_subdevice_t *) dio);
PERROR("Cannot create dio subdevice.\n");
return ME_ERRNO_INTERNAL;
}
me_slist_add_subdevice_tail(&me1000_device->base.slist,
(me_subdevice_t *) dio);
} else {
// Nothing to do.
}
} else {
PERROR("Invalid configuration.\n");
return ME_ERRNO_INTERNAL;
}
return ME_ERRNO_SUCCESS;
}
me_device_t *me1000_pci_constructor(struct pci_dev * pci_device)
{
me1000_device_t *me1000_device;
me_subdevice_t *subdevice;
int err;
int i;
PDEBUG("executed.\n");
// Allocate structure for device instance.
me1000_device = kmalloc(sizeof(me1000_device_t), GFP_KERNEL);
if (!me1000_device) {
PERROR("Cannot get memory for ME-1000 device instance.\n");
return NULL;
}
memset(me1000_device, 0, sizeof(me1000_device_t));
// Initialize base class structure.
err = me_device_pci_init((me_device_t *) me1000_device, pci_device);
if (err) {
kfree(me1000_device);
PERROR("Cannot initialize device base class.\n");
return NULL;
}
// Initialize spin lock .
spin_lock_init(&me1000_device->ctrl_lock);
for (i = 0; i < 4; i++) {
subdevice =
(me_subdevice_t *) me1000_dio_constructor(me1000_device->
base.info.pci.
reg_bases[2], i,
&me1000_device->
ctrl_lock);
if (!subdevice) {
me_device_deinit((me_device_t *) me1000_device);
kfree(me1000_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&me1000_device->base.slist,
subdevice);
}
// Overwrite base class methods.
me1000_device->base.me_device_config_load = me1000_config_load;
return (me_device_t *) me1000_device;
}
// Init and exit of module.
static int __init me1000_init(void)
{
PDEBUG("executed.\n");
return 0;
}
static void __exit me1000_exit(void)
{
PDEBUG("executed.\n");
}
module_init(me1000_init);
module_exit(me1000_exit);
// Administrative stuff for modinfo.
MODULE_AUTHOR
("Guenter Gebhardt <g.gebhardt@meilhaus.de> & Krzysztof Gantzke <k.gantzke@meilhaus.de>");
MODULE_DESCRIPTION("Device Driver Module for Meilhaus ME-1000 Devices");
MODULE_SUPPORTED_DEVICE("Meilhaus ME-1000 Digital I/O Devices");
MODULE_LICENSE("GPL");
// Export the constructor.
EXPORT_SYMBOL(me1000_pci_constructor);
|
