62f6ed1f2f98c9c5c25d70759f87d60e3e4f699d
[linux-3.10.git] / net / atm / atm_sysfs.c
1 /* ATM driver model support. */
2
3 #include <linux/kernel.h>
4 #include <linux/init.h>
5 #include <linux/kobject.h>
6 #include <linux/atmdev.h>
7 #include "common.h"
8 #include "resources.h"
9
10 #define to_atm_dev(cldev) container_of(cldev, struct atm_dev, class_dev)
11
12 static ssize_t show_type(struct class_device *cdev, char *buf)
13 {
14         struct atm_dev *adev = to_atm_dev(cdev);
15         return sprintf(buf, "%s\n", adev->type);
16 }
17
18 static ssize_t show_address(struct class_device *cdev, char *buf)
19 {
20         char *pos = buf;
21         struct atm_dev *adev = to_atm_dev(cdev);
22         int i;
23
24         for (i = 0; i < (ESI_LEN - 1); i++)
25                 pos += sprintf(pos, "%02x:", adev->esi[i]);
26         pos += sprintf(pos, "%02x\n", adev->esi[i]);
27
28         return pos - buf;
29 }
30
31 static ssize_t show_atmaddress(struct class_device *cdev, char *buf)
32 {
33         unsigned long flags;
34         char *pos = buf;
35         struct atm_dev *adev = to_atm_dev(cdev);
36         struct atm_dev_addr *aaddr;
37         int bin[] = { 1, 2, 10, 6, 1 }, *fmt = bin;
38         int i, j;
39
40         spin_lock_irqsave(&adev->lock, flags);
41         list_for_each_entry(aaddr, &adev->local, entry) {
42                 for(i = 0, j = 0; i < ATM_ESA_LEN; ++i, ++j) {
43                         if (j == *fmt) {
44                                 pos += sprintf(pos, ".");
45                                 ++fmt;
46                                 j = 0;
47                         }
48                         pos += sprintf(pos, "%02x", aaddr->addr.sas_addr.prv[i]);
49                 }
50                 pos += sprintf(pos, "\n");
51         }
52         spin_unlock_irqrestore(&adev->lock, flags);
53
54         return pos - buf;
55 }
56
57 static ssize_t show_carrier(struct class_device *cdev, char *buf)
58 {
59         char *pos = buf;
60         struct atm_dev *adev = to_atm_dev(cdev);
61
62         pos += sprintf(pos, "%d\n",
63                        adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);
64                 
65         return pos - buf;
66 }
67
68 static ssize_t show_link_rate(struct class_device *cdev, char *buf)
69 {
70         char *pos = buf;
71         struct atm_dev *adev = to_atm_dev(cdev);
72         int link_rate;
73
74         /* show the link rate, not the data rate */
75         switch (adev->link_rate) {
76                 case ATM_OC3_PCR:
77                         link_rate = 155520000;
78                         break;
79                 case ATM_OC12_PCR:
80                         link_rate = 622080000;
81                         break;
82                 case ATM_25_PCR:
83                         link_rate = 25600000;
84                         break;
85                 default:
86                         link_rate = adev->link_rate * 8 * 53;
87         }
88         pos += sprintf(pos, "%d\n", link_rate);
89                 
90         return pos - buf;
91 }
92
93 static CLASS_DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
94 static CLASS_DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
95 static CLASS_DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
96 static CLASS_DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
97 static CLASS_DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);
98
99 static struct class_device_attribute *atm_attrs[] = {
100         &class_device_attr_atmaddress,
101         &class_device_attr_address,
102         &class_device_attr_carrier,
103         &class_device_attr_type,
104         &class_device_attr_link_rate,
105         NULL
106 };
107
108 static int atm_uevent(struct class_device *cdev, char **envp, int num_envp, char *buf, int size)
109 {
110         struct atm_dev *adev;
111         int i = 0, len = 0;
112
113         if (!cdev)
114                 return -ENODEV;
115
116         adev = to_atm_dev(cdev);
117         if (!adev)
118                 return -ENODEV;
119
120         if (add_uevent_var(envp, num_envp, &i, buf, size, &len,
121                            "NAME=%s%d", adev->type, adev->number))
122                 return -ENOMEM;
123
124         envp[i] = NULL;
125         return 0;
126 }
127
128 static void atm_release(struct class_device *cdev)
129 {
130         struct atm_dev *adev = to_atm_dev(cdev);
131
132         kfree(adev);
133 }
134
135 static struct class atm_class = {
136         .name           = "atm",
137         .release        = atm_release,
138         .uevent         = atm_uevent,
139 };
140
141 int atm_register_sysfs(struct atm_dev *adev)
142 {
143         struct class_device *cdev = &adev->class_dev;
144         int i, j, err;
145
146         cdev->class = &atm_class;
147         class_set_devdata(cdev, adev);
148
149         snprintf(cdev->class_id, BUS_ID_SIZE, "%s%d", adev->type, adev->number);
150         err = class_device_register(cdev);
151         if (err < 0)
152                 return err;
153
154         for (i = 0; atm_attrs[i]; i++) {
155                 err = class_device_create_file(cdev, atm_attrs[i]);
156                 if (err)
157                         goto err_out;
158         }
159
160         return 0;
161
162 err_out:
163         for (j = 0; j < i; j++)
164                 class_device_remove_file(cdev, atm_attrs[j]);
165         class_device_del(cdev);
166         return err;
167 }
168
169 void atm_unregister_sysfs(struct atm_dev *adev)
170 {
171         struct class_device *cdev = &adev->class_dev;
172
173         class_device_del(cdev);
174 }
175
176 int __init atm_sysfs_init(void)
177 {
178         return class_register(&atm_class);
179 }
180
181 void __exit atm_sysfs_exit(void)
182 {
183         class_unregister(&atm_class);
184 }