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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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f7d57453d2
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
184 lines
3.9 KiB
C
184 lines
3.9 KiB
C
/* ATM driver model support. */
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/kobject.h>
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#include <linux/atmdev.h>
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#include "common.h"
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#include "resources.h"
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#define to_atm_dev(cldev) container_of(cldev, struct atm_dev, class_dev)
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static ssize_t show_type(struct class_device *cdev, char *buf)
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{
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struct atm_dev *adev = to_atm_dev(cdev);
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return sprintf(buf, "%s\n", adev->type);
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}
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static ssize_t show_address(struct class_device *cdev, char *buf)
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{
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char *pos = buf;
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struct atm_dev *adev = to_atm_dev(cdev);
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int i;
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for (i = 0; i < (ESI_LEN - 1); i++)
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pos += sprintf(pos, "%02x:", adev->esi[i]);
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pos += sprintf(pos, "%02x\n", adev->esi[i]);
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return pos - buf;
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}
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static ssize_t show_atmaddress(struct class_device *cdev, char *buf)
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{
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unsigned long flags;
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char *pos = buf;
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struct atm_dev *adev = to_atm_dev(cdev);
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struct atm_dev_addr *aaddr;
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int bin[] = { 1, 2, 10, 6, 1 }, *fmt = bin;
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int i, j;
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spin_lock_irqsave(&adev->lock, flags);
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list_for_each_entry(aaddr, &adev->local, entry) {
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for(i = 0, j = 0; i < ATM_ESA_LEN; ++i, ++j) {
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if (j == *fmt) {
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pos += sprintf(pos, ".");
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++fmt;
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j = 0;
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}
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pos += sprintf(pos, "%02x", aaddr->addr.sas_addr.prv[i]);
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}
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pos += sprintf(pos, "\n");
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}
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spin_unlock_irqrestore(&adev->lock, flags);
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return pos - buf;
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}
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static ssize_t show_carrier(struct class_device *cdev, char *buf)
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{
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char *pos = buf;
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struct atm_dev *adev = to_atm_dev(cdev);
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pos += sprintf(pos, "%d\n",
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adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);
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return pos - buf;
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}
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static ssize_t show_link_rate(struct class_device *cdev, char *buf)
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{
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char *pos = buf;
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struct atm_dev *adev = to_atm_dev(cdev);
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int link_rate;
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/* show the link rate, not the data rate */
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switch (adev->link_rate) {
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case ATM_OC3_PCR:
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link_rate = 155520000;
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break;
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case ATM_OC12_PCR:
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link_rate = 622080000;
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break;
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case ATM_25_PCR:
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link_rate = 25600000;
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break;
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default:
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link_rate = adev->link_rate * 8 * 53;
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}
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pos += sprintf(pos, "%d\n", link_rate);
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return pos - buf;
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}
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static CLASS_DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
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static CLASS_DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
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static CLASS_DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
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static CLASS_DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
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static CLASS_DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);
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static struct class_device_attribute *atm_attrs[] = {
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&class_device_attr_atmaddress,
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&class_device_attr_address,
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&class_device_attr_carrier,
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&class_device_attr_type,
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&class_device_attr_link_rate,
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NULL
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};
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static int atm_uevent(struct class_device *cdev, char **envp, int num_envp, char *buf, int size)
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{
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struct atm_dev *adev;
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int i = 0, len = 0;
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if (!cdev)
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return -ENODEV;
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adev = to_atm_dev(cdev);
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if (!adev)
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return -ENODEV;
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if (add_uevent_var(envp, num_envp, &i, buf, size, &len,
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"NAME=%s%d", adev->type, adev->number))
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return -ENOMEM;
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envp[i] = NULL;
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return 0;
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}
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static void atm_release(struct class_device *cdev)
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{
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struct atm_dev *adev = to_atm_dev(cdev);
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kfree(adev);
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}
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static struct class atm_class = {
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.name = "atm",
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.release = atm_release,
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.uevent = atm_uevent,
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};
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int atm_register_sysfs(struct atm_dev *adev)
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{
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struct class_device *cdev = &adev->class_dev;
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int i, j, err;
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cdev->class = &atm_class;
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class_set_devdata(cdev, adev);
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snprintf(cdev->class_id, BUS_ID_SIZE, "%s%d", adev->type, adev->number);
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err = class_device_register(cdev);
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if (err < 0)
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return err;
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for (i = 0; atm_attrs[i]; i++) {
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err = class_device_create_file(cdev, atm_attrs[i]);
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if (err)
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goto err_out;
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}
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return 0;
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err_out:
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for (j = 0; j < i; j++)
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class_device_remove_file(cdev, atm_attrs[j]);
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class_device_del(cdev);
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return err;
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}
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void atm_unregister_sysfs(struct atm_dev *adev)
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{
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struct class_device *cdev = &adev->class_dev;
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class_device_del(cdev);
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}
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int __init atm_sysfs_init(void)
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{
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return class_register(&atm_class);
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}
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void __exit atm_sysfs_exit(void)
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{
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class_unregister(&atm_class);
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}
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