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_atmindex(struct device *cdev,
  61                              struct device_attribute *attr, char *buf)
  62 {
  63         struct atm_dev *adev = to_atm_dev(cdev);
  64
  65         return sprintf(buf, "%d\n", adev->number);
  66 }
  67
  68 static ssize_t show_carrier(struct device *cdev,
  69                             struct device_attribute *attr, char *buf)
  70 {
  71         char *pos = buf;
  72         struct atm_dev *adev = to_atm_dev(cdev);
  73
  74         pos += sprintf(pos, "%d\n",
  75                        adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);
  76
  77         return pos - buf;
  78 }
  79
  80 static ssize_t show_link_rate(struct device *cdev,
  81                               struct device_attribute *attr, char *buf)
  82 {
  83         char *pos = buf;
  84         struct atm_dev *adev = to_atm_dev(cdev);
  85         int link_rate;
  86
  87         /* show the link rate, not the data rate */
  88         switch (adev->link_rate) {
  89                 case ATM_OC3_PCR:
  90                         link_rate = 155520000;
  91                         break;
  92                 case ATM_OC12_PCR:
  93                         link_rate = 622080000;
  94                         break;
  95                 case ATM_25_PCR:
  96                         link_rate = 25600000;
  97                         break;
  98                 default:
  99                         link_rate = adev->link_rate * 8 * 53;
 100         }
 101         pos += sprintf(pos, "%d\n", link_rate);
 102
 103         return pos - buf;
 104 }
 105
 106 static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
 107 static DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
 108 static DEVICE_ATTR(atmindex, S_IRUGO, show_atmindex, NULL);
 109 static DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
 110 static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
 111 static DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);
 112
 113 static struct device_attribute *atm_attrs[] = {
 114         &dev_attr_atmaddress,
 115         &dev_attr_address,
 116         &dev_attr_atmindex,
 117         &dev_attr_carrier,
 118         &dev_attr_type,
 119         &dev_attr_link_rate,
 120         NULL
 121 };
 122
 123
 124 static int atm_uevent(struct device *cdev, struct kobj_uevent_env *env)
 125 {
 126         struct atm_dev *adev;
 127
 128         if (!cdev)
 129                 return -ENODEV;
 130
 131         adev = to_atm_dev(cdev);
 132         if (!adev)
 133                 return -ENODEV;
 134
 135         if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number))
 136                 return -ENOMEM;
 137
 138         return 0;
 139 }
 140
 141 static void atm_release(struct device *cdev)
 142 {
 143         struct atm_dev *adev = to_atm_dev(cdev);
 144
 145         kfree(adev);
 146 }
 147
 148 static struct class atm_class = {
 149         .name           = "atm",
 150         .dev_release    = atm_release,
 151         .dev_uevent             = atm_uevent,
 152 };
 153
 154 int atm_register_sysfs(struct atm_dev *adev)
 155 {
 156         struct device *cdev = &adev->class_dev;
 157         int i, j, err;
 158
 159         cdev->class = &atm_class;
 160         dev_set_drvdata(cdev, adev);
 161
 162         dev_set_name(cdev, "%s%d", adev->type, adev->number);
 163         err = device_register(cdev);
 164         if (err < 0)
 165                 return err;
 166
 167         for (i = 0; atm_attrs[i]; i++) {
 168                 err = device_create_file(cdev, atm_attrs[i]);
 169                 if (err)
 170                         goto err_out;
 171         }
 172
 173         return 0;
 174
 175 err_out:
 176         for (j = 0; j < i; j++)
 177                 device_remove_file(cdev, atm_attrs[j]);
 178         device_del(cdev);
 179         return err;
 180 }
 181
 182 void atm_unregister_sysfs(struct atm_dev *adev)
 183 {
 184         struct device *cdev = &adev->class_dev;
 185
 186         device_del(cdev);
 187 }
 188
 189 int __init atm_sysfs_init(void)
 190 {
 191         return class_register(&atm_class);
 192 }
 193
 194 void __exit atm_sysfs_exit(void)
 195 {
 196         class_unregister(&atm_class);
 197 }