blob: 62f6ed1f2f98c9c5c25d70759f87d60e3e4f699d [file] [log] [blame]
Roman Kagan656d98b2006-06-29 12:36:34 -07001/* ATM driver model support. */
2
Roman Kagan656d98b2006-06-29 12:36:34 -07003#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
12static 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
18static 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
31static 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
57static 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
68static 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
93static CLASS_DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
94static CLASS_DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
95static CLASS_DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
96static CLASS_DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
97static CLASS_DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);
98
99static 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
108static 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
128static void atm_release(struct class_device *cdev)
129{
130 struct atm_dev *adev = to_atm_dev(cdev);
131
132 kfree(adev);
133}
134
135static struct class atm_class = {
136 .name = "atm",
137 .release = atm_release,
138 .uevent = atm_uevent,
139};
140
141int atm_register_sysfs(struct atm_dev *adev)
142{
143 struct class_device *cdev = &adev->class_dev;
Jeff Garzik97f80bc2006-10-20 19:48:42 -0700144 int i, j, err;
Roman Kagan656d98b2006-06-29 12:36:34 -0700145
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
Jeff Garzik97f80bc2006-10-20 19:48:42 -0700154 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 }
Roman Kagan656d98b2006-06-29 12:36:34 -0700159
160 return 0;
Jeff Garzik97f80bc2006-10-20 19:48:42 -0700161
162err_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;
Roman Kagan656d98b2006-06-29 12:36:34 -0700167}
168
169void atm_unregister_sysfs(struct atm_dev *adev)
170{
171 struct class_device *cdev = &adev->class_dev;
172
173 class_device_del(cdev);
174}
175
176int __init atm_sysfs_init(void)
177{
178 return class_register(&atm_class);
179}
180
181void __exit atm_sysfs_exit(void)
182{
183 class_unregister(&atm_class);
184}