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
|
/**
* @file metempl_device.c
*
* @brief template device class implementation.
* @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
* @author Guenter Gebhardt
*/
/*
* 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 "metempl_device.h"
#include "mesubdevice.h"
#include "metempl_sub.h"
me_device_t *metempl_pci_constructor(struct pci_dev *pci_device)
{
metempl_device_t *metempl_device;
me_subdevice_t *subdevice;
unsigned int version_idx;
int err;
int i;
PDEBUG("executed.\n");
// Allocate structure for device instance.
metempl_device = kmalloc(sizeof(metempl_device_t), GFP_KERNEL);
if (!metempl_device) {
PERROR("Cannot get memory for device instance.\n");
return NULL;
}
memset(metempl_device, 0, sizeof(metempl_device_t));
// Initialize base class structure.
err = me_device_pci_init((me_device_t *) metempl_device, pci_device);
if (err) {
kfree(metempl_device);
PERROR("Cannot initialize device base class.\n");
return NULL;
}
/* Get the index in the device version information table. */
version_idx =
metempl_versions_get_device_index(metempl_device->base.info.pci.
device_id);
// Initialize spin lock .
spin_lock_init(&metempl_device->ctrl_reg_lock);
// Create subdevice instances.
for (i = 0; i < metempl_versions[version_idx].subdevices; i++) {
subdevice =
(me_subdevice_t *) metempl_sub_constructor(metempl_device->
base.info.pci.
reg_bases[2], i,
&metempl_device->
ctrl_reg_lock);
if (!subdevice) {
me_device_deinit((me_device_t *) metempl_device);
kfree(metempl_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&metempl_device->base.slist,
subdevice);
}
/* Overwrite base class methods if applicable. */
return (me_device_t *) metempl_device;
}
EXPORT_SYMBOL(metempl_pci_constructor);
// Init and exit of module.
static int __init metempl_init(void)
{
PDEBUG("executed.\n.");
return 0;
}
static void __exit metempl_exit(void)
{
PDEBUG("executed.\n.");
}
module_init(metempl_init);
module_exit(metempl_exit);
// Administrative stuff for modinfo.
MODULE_AUTHOR("Guenter Gebhardt <g.gebhardt@meilhaus.de>");
MODULE_DESCRIPTION("Device Driver Module for Template Device");
MODULE_SUPPORTED_DEVICE("Meilhaus Template Devices");
MODULE_LICENSE("GPL");
|
