Commit 656d98b0 authored by Roman Kagan's avatar Roman Kagan Committed by David S. Miller
Browse files

[ATM]: basic sysfs support for ATM devices 



Signed-off-by: default avatarChas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d17f0865

include/linux/atmdev.h

+3 −1
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#define LINUX_ATMDEV_H





#include <linux/device.h>

#include <linux/atmapi.h>

#include <linux/atm.h>

#include <linux/atmioc.h>
@@ -358,6 +359,7 @@ struct atm_dev { 
	struct proc_dir_entry *proc_entry; /* proc entry */

	char *proc_name;		/* proc entry name */

#endif

	struct class_device class_dev;	/* sysfs class device */

	struct list_head dev_list;	/* linkage */

};
@@ -459,7 +461,7 @@ static inline void atm_dev_put(struct atm_dev *dev) 
		BUG_ON(!test_bit(ATM_DF_REMOVED, &dev->flags));

		if (dev->ops->dev_close)

			dev->ops->dev_close(dev);

		kfree(dev);

		class_device_put(&dev->class_dev);

	}

}

net/atm/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
# Makefile for the ATM Protocol Families.

#



atm-y		:= addr.o pvc.o signaling.o svc.o ioctl.o common.o atm_misc.o raw.o resources.o

atm-y		:= addr.o pvc.o signaling.o svc.o ioctl.o common.o atm_misc.o raw.o resources.o atm_sysfs.o

mpoa-objs	:= mpc.o mpoa_caches.o mpoa_proc.o



obj-$(CONFIG_ATM) += atm.o

net/atm/atm_sysfs.c

0 → 100644
+176 −0
Original line number Diff line number Diff line 
/* ATM driver model support. */



#include <linux/config.h>

#include <linux/kernel.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 show_type(struct class_device *cdev, char *buf)

{

	struct atm_dev *adev = to_atm_dev(cdev);

	return sprintf(buf, "%s\n", adev->type);

}



static ssize_t show_address(struct class_device *cdev, char *buf)

{

	char *pos = buf;

	struct atm_dev *adev = to_atm_dev(cdev);

	int i;



	for (i = 0; i < (ESI_LEN - 1); i++)

		pos += sprintf(pos, "%02x:", adev->esi[i]);

	pos += sprintf(pos, "%02x\n", adev->esi[i]);



	return pos - buf;

}



static ssize_t show_atmaddress(struct class_device *cdev, char *buf)

{

        unsigned long flags;

	char *pos = buf;

	struct atm_dev *adev = to_atm_dev(cdev);

        struct atm_dev_addr *aaddr;

	int bin[] = { 1, 2, 10, 6, 1 }, *fmt = bin;

	int i, j;



        spin_lock_irqsave(&adev->lock, flags);

        list_for_each_entry(aaddr, &adev->local, entry) {

		for(i = 0, j = 0; i < ATM_ESA_LEN; ++i, ++j) {

			if (j == *fmt) {

				pos += sprintf(pos, ".");

				++fmt;

				j = 0;

			}

			pos += sprintf(pos, "%02x", aaddr->addr.sas_addr.prv[i]);

		}

		pos += sprintf(pos, "\n");

	}

        spin_unlock_irqrestore(&adev->lock, flags);



	return pos - buf;

}



static ssize_t show_carrier(struct class_device *cdev, char *buf)

{

	char *pos = buf;

	struct atm_dev *adev = to_atm_dev(cdev);



	pos += sprintf(pos, "%d\n",

		       adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);

		

	return pos - buf;

}



static ssize_t show_link_rate(struct class_device *cdev, char *buf)

{

	char *pos = 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;

	}

	pos += sprintf(pos, "%d\n", link_rate);

		

	return pos - buf;

}



static CLASS_DEVICE_ATTR(address, S_IRUGO, show_address, NULL);

static CLASS_DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);

static CLASS_DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);

static CLASS_DEVICE_ATTR(type, S_IRUGO, show_type, NULL);

static CLASS_DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);



static struct class_device_attribute *atm_attrs[] = {

	&class_device_attr_atmaddress,

	&class_device_attr_address,

	&class_device_attr_carrier,

	&class_device_attr_type,

	&class_device_attr_link_rate,

	NULL

};



static int atm_uevent(struct class_device *cdev, char **envp, int num_envp, char *buf, int size)

{

	struct atm_dev *adev;

	int i = 0, len = 0;



	if (!cdev)

		return -ENODEV;



	adev = to_atm_dev(cdev);

	if (!adev)

		return -ENODEV;



	if (add_uevent_var(envp, num_envp, &i, buf, size, &len,

			   "NAME=%s%d", adev->type, adev->number))

		return -ENOMEM;



	envp[i] = NULL;

	return 0;

}



static void atm_release(struct class_device *cdev)

{

	struct atm_dev *adev = to_atm_dev(cdev);



	kfree(adev);

}



static struct class atm_class = {

	.name		= "atm",

	.release	= atm_release,

	.uevent		= atm_uevent,

};



int atm_register_sysfs(struct atm_dev *adev)

{

	struct class_device *cdev = &adev->class_dev;

	int i, err;



	cdev->class = &atm_class;

	class_set_devdata(cdev, adev);



	snprintf(cdev->class_id, BUS_ID_SIZE, "%s%d", adev->type, adev->number);

	err = class_device_register(cdev);

	if (err < 0)

		return err;



	for (i = 0; atm_attrs[i]; i++)

		class_device_create_file(cdev, atm_attrs[i]);



	return 0;

}



void atm_unregister_sysfs(struct atm_dev *adev)

{

	struct class_device *cdev = &adev->class_dev;



	class_device_del(cdev);

}



int __init atm_sysfs_init(void)

{

	return class_register(&atm_class);

}



void __exit atm_sysfs_exit(void)

{

	class_unregister(&atm_class);

}

net/atm/common.c

+7 −0
Original line number Diff line number Diff line
@@ -791,8 +791,14 @@ static int __init atm_init(void) 
		printk(KERN_ERR "atm_proc_init() failed with %d\n",error);

		goto out_atmsvc_exit;

	}

        if ((error = atm_sysfs_init()) < 0) {

		printk(KERN_ERR "atm_sysfs_init() failed with %d\n",error);

		goto out_atmproc_exit;

	}

out:

	return error;

out_atmproc_exit:

	atm_proc_exit();

out_atmsvc_exit:

	atmsvc_exit();

out_atmpvc_exit:
@@ -805,6 +811,7 @@ static int __init atm_init(void) 
static void __exit atm_exit(void)

{

	atm_proc_exit();

	atm_sysfs_exit();

	atmsvc_exit();

	atmpvc_exit();

	proto_unregister(&vcc_proto);

net/atm/common.h

+2 −0
Original line number Diff line number Diff line
@@ -28,6 +28,8 @@ int atmpvc_init(void); 
void atmpvc_exit(void);

int atmsvc_init(void);

void atmsvc_exit(void);

int atm_sysfs_init(void);

void atm_sysfs_exit(void);



#ifdef CONFIG_PROC_FS

int atm_proc_init(void);