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-rw-r--r--net/atm/atm_sysfs.c185
1 files changed, 185 insertions, 0 deletions
diff --git a/net/atm/atm_sysfs.c b/net/atm/atm_sysfs.c
new file mode 100644
index 000000000..0fdbdfd19
--- /dev/null
+++ b/net/atm/atm_sysfs.c
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: GPL-2.0
+/* ATM driver model support. */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/kobject.h>
+#include <linux/atmdev.h>
+#include "common.h"
+#include "resources.h"
+
+#define to_atm_dev(cldev) container_of(cldev, struct atm_dev, class_dev)
+
+static ssize_t type_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct atm_dev *adev = to_atm_dev(cdev);
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", adev->type);
+}
+
+static ssize_t address_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct atm_dev *adev = to_atm_dev(cdev);
+
+ return scnprintf(buf, PAGE_SIZE, "%pM\n", adev->esi);
+}
+
+static ssize_t atmaddress_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ unsigned long flags;
+ struct atm_dev *adev = to_atm_dev(cdev);
+ struct atm_dev_addr *aaddr;
+ int count = 0;
+
+ spin_lock_irqsave(&adev->lock, flags);
+ list_for_each_entry(aaddr, &adev->local, entry) {
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "%1phN.%2phN.%10phN.%6phN.%1phN\n",
+ &aaddr->addr.sas_addr.prv[0],
+ &aaddr->addr.sas_addr.prv[1],
+ &aaddr->addr.sas_addr.prv[3],
+ &aaddr->addr.sas_addr.prv[13],
+ &aaddr->addr.sas_addr.prv[19]);
+ }
+ spin_unlock_irqrestore(&adev->lock, flags);
+
+ return count;
+}
+
+static ssize_t atmindex_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct atm_dev *adev = to_atm_dev(cdev);
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n", adev->number);
+}
+
+static ssize_t carrier_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct atm_dev *adev = to_atm_dev(cdev);
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n",
+ adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);
+}
+
+static ssize_t link_rate_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct atm_dev *adev = to_atm_dev(cdev);
+ int link_rate;
+
+ /* show the link rate, not the data rate */
+ switch (adev->link_rate) {
+ case ATM_OC3_PCR:
+ link_rate = 155520000;
+ break;
+ case ATM_OC12_PCR:
+ link_rate = 622080000;
+ break;
+ case ATM_25_PCR:
+ link_rate = 25600000;
+ break;
+ default:
+ link_rate = adev->link_rate * 8 * 53;
+ }
+ return scnprintf(buf, PAGE_SIZE, "%d\n", link_rate);
+}
+
+static DEVICE_ATTR_RO(address);
+static DEVICE_ATTR_RO(atmaddress);
+static DEVICE_ATTR_RO(atmindex);
+static DEVICE_ATTR_RO(carrier);
+static DEVICE_ATTR_RO(type);
+static DEVICE_ATTR_RO(link_rate);
+
+static struct device_attribute *atm_attrs[] = {
+ &dev_attr_atmaddress,
+ &dev_attr_address,
+ &dev_attr_atmindex,
+ &dev_attr_carrier,
+ &dev_attr_type,
+ &dev_attr_link_rate,
+ NULL
+};
+
+
+static int atm_uevent(struct device *cdev, struct kobj_uevent_env *env)
+{
+ struct atm_dev *adev;
+
+ if (!cdev)
+ return -ENODEV;
+
+ adev = to_atm_dev(cdev);
+ if (!adev)
+ return -ENODEV;
+
+ if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void atm_release(struct device *cdev)
+{
+ struct atm_dev *adev = to_atm_dev(cdev);
+
+ kfree(adev);
+}
+
+static struct class atm_class = {
+ .name = "atm",
+ .dev_release = atm_release,
+ .dev_uevent = atm_uevent,
+};
+
+int atm_register_sysfs(struct atm_dev *adev, struct device *parent)
+{
+ struct device *cdev = &adev->class_dev;
+ int i, j, err;
+
+ cdev->class = &atm_class;
+ cdev->parent = parent;
+ dev_set_drvdata(cdev, adev);
+
+ dev_set_name(cdev, "%s%d", adev->type, adev->number);
+ err = device_register(cdev);
+ if (err < 0)
+ return err;
+
+ for (i = 0; atm_attrs[i]; i++) {
+ err = device_create_file(cdev, atm_attrs[i]);
+ if (err)
+ goto err_out;
+ }
+
+ return 0;
+
+err_out:
+ for (j = 0; j < i; j++)
+ device_remove_file(cdev, atm_attrs[j]);
+ device_del(cdev);
+ return err;
+}
+
+void atm_unregister_sysfs(struct atm_dev *adev)
+{
+ struct device *cdev = &adev->class_dev;
+
+ device_del(cdev);
+}
+
+int __init atm_sysfs_init(void)
+{
+ return class_register(&atm_class);
+}
+
+void __exit atm_sysfs_exit(void)
+{
+ class_unregister(&atm_class);
+}