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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 | } |
201 |
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Tags:
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