Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6.git] / net / atm / atm_sysfs.c
1 /* ATM driver model support. */
2
3 #include <linux/kernel.h>
4 #include <linux/slab.h>
5 #include <linux/init.h>
6 #include <linux/kobject.h>
7 #include <linux/atmdev.h>
8 #include "common.h"
9 #include "resources.h"
10
11 #define to_atm_dev(cldev) container_of(cldev, struct atm_dev, class_dev)
12
13 static ssize_t show_type(struct device *cdev,
14                          struct device_attribute *attr, char *buf)
15 {
16         struct atm_dev *adev = to_atm_dev(cdev);
17         return sprintf(buf, "%s\n", adev->type);
18 }
19
20 static ssize_t show_address(struct device *cdev,
21                             struct device_attribute *attr, char *buf)
22 {
23         char *pos = buf;
24         struct atm_dev *adev = to_atm_dev(cdev);
25         int i;
26
27         for (i = 0; i < (ESI_LEN - 1); i++)
28                 pos += sprintf(pos, "%02x:", adev->esi[i]);
29         pos += sprintf(pos, "%02x\n", adev->esi[i]);
30
31         return pos - buf;
32 }
33
34 static ssize_t show_atmaddress(struct device *cdev,
35                                struct device_attribute *attr, char *buf)
36 {
37         unsigned long flags;
38         char *pos = buf;
39         struct atm_dev *adev = to_atm_dev(cdev);
40         struct atm_dev_addr *aaddr;
41         int bin[] = { 1, 2, 10, 6, 1 }, *fmt = bin;
42         int i, j;
43
44         spin_lock_irqsave(&adev->lock, flags);
45         list_for_each_entry(aaddr, &adev->local, entry) {
46                 for (i = 0, j = 0; i < ATM_ESA_LEN; ++i, ++j) {
47                         if (j == *fmt) {
48                                 pos += sprintf(pos, ".");
49                                 ++fmt;
50                                 j = 0;
51                         }
52                         pos += sprintf(pos, "%02x",
53                                        aaddr->addr.sas_addr.prv[i]);
54                 }
55                 pos += sprintf(pos, "\n");
56         }
57         spin_unlock_irqrestore(&adev->lock, flags);
58
59         return pos - buf;
60 }
61
62 static ssize_t show_carrier(struct device *cdev,
63                             struct device_attribute *attr, char *buf)
64 {
65         char *pos = buf;
66         struct atm_dev *adev = to_atm_dev(cdev);
67
68         pos += sprintf(pos, "%d\n",
69                        adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);
70
71         return pos - buf;
72 }
73
74 static ssize_t show_link_rate(struct device *cdev,
75                               struct device_attribute *attr, char *buf)
76 {
77         char *pos = buf;
78         struct atm_dev *adev = to_atm_dev(cdev);
79         int link_rate;
80
81         /* show the link rate, not the data rate */
82         switch (adev->link_rate) {
83         case ATM_OC3_PCR:
84                 link_rate = 155520000;
85                 break;
86         case ATM_OC12_PCR:
87                 link_rate = 622080000;
88                 break;
89         case ATM_25_PCR:
90                 link_rate = 25600000;
91                 break;
92         default:
93                 link_rate = adev->link_rate * 8 * 53;
94         }
95         pos += sprintf(pos, "%d\n", link_rate);
96
97         return pos - buf;
98 }
99
100 static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
101 static DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
102 static DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
103 static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
104 static DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);
105
106 static struct device_attribute *atm_attrs[] = {
107         &dev_attr_atmaddress,
108         &dev_attr_address,
109         &dev_attr_carrier,
110         &dev_attr_type,
111         &dev_attr_link_rate,
112         NULL
113 };
114
115
116 static int atm_uevent(struct device *cdev, struct kobj_uevent_env *env)
117 {
118         struct atm_dev *adev;
119
120         if (!cdev)
121                 return -ENODEV;
122
123         adev = to_atm_dev(cdev);
124         if (!adev)
125                 return -ENODEV;
126
127         if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number))
128                 return -ENOMEM;
129
130         return 0;
131 }
132
133 static void atm_release(struct device *cdev)
134 {
135         struct atm_dev *adev = to_atm_dev(cdev);
136
137         kfree(adev);
138 }
139
140 static struct class atm_class = {
141         .name           = "atm",
142         .dev_release    = atm_release,
143         .dev_uevent             = atm_uevent,
144 };
145
146 int atm_register_sysfs(struct atm_dev *adev, struct device *parent)
147 {
148         struct device *cdev = &adev->class_dev;
149         int i, j, err;
150
151         cdev->class = &atm_class;
152         cdev->parent = parent;
153         dev_set_drvdata(cdev, adev);
154
155         dev_set_name(cdev, "%s%d", adev->type, adev->number);
156         err = device_register(cdev);
157         if (err < 0)
158                 return err;
159
160         for (i = 0; atm_attrs[i]; i++) {
161                 err = device_create_file(cdev, atm_attrs[i]);
162                 if (err)
163                         goto err_out;
164         }
165
166         return 0;
167
168 err_out:
169         for (j = 0; j < i; j++)
170                 device_remove_file(cdev, atm_attrs[j]);
171         device_del(cdev);
172         return err;
173 }
174
175 void atm_unregister_sysfs(struct atm_dev *adev)
176 {
177         struct device *cdev = &adev->class_dev;
178
179         device_del(cdev);
180 }
181
182 int __init atm_sysfs_init(void)
183 {
184         return class_register(&atm_class);
185 }
186
187 void __exit atm_sysfs_exit(void)
188 {
189         class_unregister(&atm_class);
190 }