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