Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux...
[firefly-linux-kernel-4.4.55.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_atmindex(struct device *cdev,
63                              struct device_attribute *attr, char *buf)
64 {
65         struct atm_dev *adev = to_atm_dev(cdev);
66
67         return sprintf(buf, "%d\n", adev->number);
68 }
69
70 static ssize_t show_carrier(struct device *cdev,
71                             struct device_attribute *attr, char *buf)
72 {
73         char *pos = buf;
74         struct atm_dev *adev = to_atm_dev(cdev);
75
76         pos += sprintf(pos, "%d\n",
77                        adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);
78
79         return pos - buf;
80 }
81
82 static ssize_t show_link_rate(struct device *cdev,
83                               struct device_attribute *attr, char *buf)
84 {
85         char *pos = buf;
86         struct atm_dev *adev = to_atm_dev(cdev);
87         int link_rate;
88
89         /* show the link rate, not the data rate */
90         switch (adev->link_rate) {
91         case ATM_OC3_PCR:
92                 link_rate = 155520000;
93                 break;
94         case ATM_OC12_PCR:
95                 link_rate = 622080000;
96                 break;
97         case ATM_25_PCR:
98                 link_rate = 25600000;
99                 break;
100         default:
101                 link_rate = adev->link_rate * 8 * 53;
102         }
103         pos += sprintf(pos, "%d\n", link_rate);
104
105         return pos - buf;
106 }
107
108 static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
109 static DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
110 static DEVICE_ATTR(atmindex, S_IRUGO, show_atmindex, NULL);
111 static DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
112 static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
113 static DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);
114
115 static struct device_attribute *atm_attrs[] = {
116         &dev_attr_atmaddress,
117         &dev_attr_address,
118         &dev_attr_atmindex,
119         &dev_attr_carrier,
120         &dev_attr_type,
121         &dev_attr_link_rate,
122         NULL
123 };
124
125
126 static int atm_uevent(struct device *cdev, struct kobj_uevent_env *env)
127 {
128         struct atm_dev *adev;
129
130         if (!cdev)
131                 return -ENODEV;
132
133         adev = to_atm_dev(cdev);
134         if (!adev)
135                 return -ENODEV;
136
137         if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number))
138                 return -ENOMEM;
139
140         return 0;
141 }
142
143 static void atm_release(struct device *cdev)
144 {
145         struct atm_dev *adev = to_atm_dev(cdev);
146
147         kfree(adev);
148 }
149
150 static struct class atm_class = {
151         .name           = "atm",
152         .dev_release    = atm_release,
153         .dev_uevent             = atm_uevent,
154 };
155
156 int atm_register_sysfs(struct atm_dev *adev, struct device *parent)
157 {
158         struct device *cdev = &adev->class_dev;
159         int i, j, err;
160
161         cdev->class = &atm_class;
162         cdev->parent = parent;
163         dev_set_drvdata(cdev, adev);
164
165         dev_set_name(cdev, "%s%d", adev->type, adev->number);
166         err = device_register(cdev);
167         if (err < 0)
168                 return err;
169
170         for (i = 0; atm_attrs[i]; i++) {
171                 err = device_create_file(cdev, atm_attrs[i]);
172                 if (err)
173                         goto err_out;
174         }
175
176         return 0;
177
178 err_out:
179         for (j = 0; j < i; j++)
180                 device_remove_file(cdev, atm_attrs[j]);
181         device_del(cdev);
182         return err;
183 }
184
185 void atm_unregister_sysfs(struct atm_dev *adev)
186 {
187         struct device *cdev = &adev->class_dev;
188
189         device_del(cdev);
190 }
191
192 int __init atm_sysfs_init(void)
193 {
194         return class_register(&atm_class);
195 }
196
197 void __exit atm_sysfs_exit(void)
198 {
199         class_unregister(&atm_class);
200 }