aboutsummaryrefslogtreecommitdiffstats
path: root/net/atm/atm_sysfs.c
blob: f7fa67c78766f59c0b107ece600348f401a40d57 (plain)
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
/* ATM driver model support. */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/kobject.h>
#include <linux/atmdev.h>
#include "common.h"
#include "resources.h"

#define to_atm_dev(cldev) container_of(cldev, struct atm_dev, class_dev)

static ssize_t show_type(struct device *cdev,
			 struct device_attribute *attr, char *buf)
{
	struct atm_dev *adev = to_atm_dev(cdev);
	return sprintf(buf, "%s\n", adev->type);
}

static ssize_t show_address(struct device *cdev,
			    struct device_attribute *attr, char *buf)
{
	char *pos = buf;
	struct atm_dev *adev = to_atm_dev(cdev);
	int i;

	for (i = 0; i < (ESI_LEN - 1); i++)
		pos += sprintf(pos, "%02x:", adev->esi[i]);
	pos += sprintf(pos, "%02x\n", adev->esi[i]);

	return pos - buf;
}

static ssize_t show_atmaddress(struct device *cdev,
			       struct device_attribute *attr, char *buf)
{
	unsigned long flags;
	char *pos = buf;
	struct atm_dev *adev = to_atm_dev(cdev);
	struct atm_dev_addr *aaddr;
	int bin[] = { 1, 2, 10, 6, 1 }, *fmt = bin;
	int i, j;

	spin_lock_irqsave(&adev->lock, flags);
	list_for_each_entry(aaddr, &adev->local, entry) {
		for (i = 0, j = 0; i < ATM_ESA_LEN; ++i, ++j) {
			if (j == *fmt) {
				pos += sprintf(pos, ".");
				++fmt;
				j = 0;
			}
			pos += sprintf(pos, "%02x",
				       aaddr->addr.sas_addr.prv[i]);
		}
		pos += sprintf(pos, "\n");
	}
	spin_unlock_irqrestore(&adev->lock, flags);

	return pos - buf;
}

static ssize_t show_carrier(struct device *cdev,
			    struct device_attribute *attr, char *buf)
{
	char *pos = buf;
	struct atm_dev *adev = to_atm_dev(cdev);

	pos += sprintf(pos, "%d\n",
		       adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);

	return pos - buf;
}

static ssize_t show_link_rate(struct device *cdev,
			      struct device_attribute *attr, char *buf)
{
	char *pos = buf;
	struct atm_dev *adev = to_atm_dev(cdev);
	int link_rate;

	/* show the link rate, not the data rate */
	switch (adev->link_rate) {
	case ATM_OC3_PCR:
		link_rate = 155520000;
		break;
	case ATM_OC12_PCR:
		link_rate = 622080000;
		break;
	case ATM_25_PCR:
		link_rate = 25600000;
		break;
	default:
		link_rate = adev->link_rate * 8 * 53;
	}
	pos += sprintf(pos, "%d\n", link_rate);

	return pos - buf;
}

static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
static DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
static DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
static DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);

static struct device_attribute *atm_attrs[] = {
	&dev_attr_atmaddress,
	&dev_attr_address,
	&dev_attr_carrier,
	&dev_attr_type,
	&dev_attr_link_rate,
	NULL
};


static int atm_uevent(struct device *cdev, struct kobj_uevent_env *env)
{
	struct atm_dev *adev;

	if (!cdev)
		return -ENODEV;

	adev = to_atm_dev(cdev);
	if (!adev)
		return -ENODEV;

	if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number))
		return -ENOMEM;

	return 0;
}

static void atm_release(struct device *cdev)
{
	struct atm_dev *adev = to_atm_dev(cdev);

	kfree(adev);
}

static struct class atm_class = {
	.name		= "atm",
	.dev_release	= atm_release,
	.dev_uevent		= atm_uevent,
};

int atm_register_sysfs(struct atm_dev *adev, struct device *parent)
{
	struct device *cdev = &adev->class_dev;
	int i, j, err;

	cdev->class = &atm_class;
	cdev->parent = parent;
	dev_set_drvdata(cdev, adev);

	dev_set_name(cdev, "%s%d", adev->type, adev->number);
	err = device_register(cdev);
	if (err < 0)
		return err;

	for (i = 0; atm_attrs[i]; i++) {
		err = device_create_file(cdev, atm_attrs[i]);
		if (err)
			goto err_out;
	}

	return 0;

err_out:
	for (j = 0; j < i; j++)
		device_remove_file(cdev, atm_attrs[j]);
	device_del(cdev);
	return err;
}

void atm_unregister_sysfs(struct atm_dev *adev)
{
	struct device *cdev = &adev->class_dev;

	device_del(cdev);
}

int __init atm_sysfs_init(void)
{
	return class_register(&atm_class);
}

void __exit atm_sysfs_exit(void)
{
	class_unregister(&atm_class);
}