[linux-block.git] / net / atm / atm_sysfs.c

// 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(const struct device *cdev, struct kobj_uevent_env *env)
{
	const struct atm_dev *adev;

	if (!cdev)
		return -ENODEV;

	adev = to_atm_dev(cdev);

	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);
}
Commit	Line	Data
	1	// SPDX-License-Identifier: GPL-2.0
	2	/* ATM driver model support. */
	3
	4	#include <linux/kernel.h>
	5	#include <linux/slab.h>
	6	#include <linux/init.h>
	7	#include <linux/kobject.h>
	8	#include <linux/atmdev.h>
	9	#include "common.h"
	10	#include "resources.h"
	11
	12	#define to_atm_dev(cldev) container_of(cldev, struct atm_dev, class_dev)
	13
	14	static ssize_t type_show(struct device *cdev,
	15	struct device_attribute attr, char buf)
	16	{
	17	struct atm_dev *adev = to_atm_dev(cdev);
	18
	19	return scnprintf(buf, PAGE_SIZE, "%s\n", adev->type);
	20	}
	21
	22	static ssize_t address_show(struct device *cdev,
	23	struct device_attribute attr, char buf)
	24	{
	25	struct atm_dev *adev = to_atm_dev(cdev);
	26
	27	return scnprintf(buf, PAGE_SIZE, "%pM\n", adev->esi);
	28	}
	29
	30	static ssize_t atmaddress_show(struct device *cdev,
	31	struct device_attribute attr, char buf)
	32	{
	33	unsigned long flags;
	34	struct atm_dev *adev = to_atm_dev(cdev);
	35	struct atm_dev_addr *aaddr;
	36	int count = 0;
	37
	38	spin_lock_irqsave(&adev->lock, flags);
	39	list_for_each_entry(aaddr, &adev->local, entry) {
	40	count += scnprintf(buf + count, PAGE_SIZE - count,
	41	"%1phN.%2phN.%10phN.%6phN.%1phN\n",
	42	&aaddr->addr.sas_addr.prv[0],
	43	&aaddr->addr.sas_addr.prv[1],
	44	&aaddr->addr.sas_addr.prv[3],
	45	&aaddr->addr.sas_addr.prv[13],
	46	&aaddr->addr.sas_addr.prv[19]);
	47	}
	48	spin_unlock_irqrestore(&adev->lock, flags);
	49
	50	return count;
	51	}
	52
	53	static ssize_t atmindex_show(struct device *cdev,
	54	struct device_attribute attr, char buf)
	55	{
	56	struct atm_dev *adev = to_atm_dev(cdev);
	57
	58	return scnprintf(buf, PAGE_SIZE, "%d\n", adev->number);
	59	}
	60
	61	static ssize_t carrier_show(struct device *cdev,
	62	struct device_attribute attr, char buf)
	63	{
	64	struct atm_dev *adev = to_atm_dev(cdev);
	65
	66	return scnprintf(buf, PAGE_SIZE, "%d\n",
	67	adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);
	68	}
	69
	70	static ssize_t link_rate_show(struct device *cdev,
	71	struct device_attribute attr, char buf)
	72	{
	73	struct atm_dev *adev = to_atm_dev(cdev);
	74	int link_rate;
	75
	76	/* show the link rate, not the data rate */
	77	switch (adev->link_rate) {
	78	case ATM_OC3_PCR:
	79	link_rate = 155520000;
	80	break;
	81	case ATM_OC12_PCR:
	82	link_rate = 622080000;
	83	break;
	84	case ATM_25_PCR:
	85	link_rate = 25600000;
	86	break;
	87	default:
	88	link_rate = adev->link_rate * 8 * 53;
	89	}
	90	return scnprintf(buf, PAGE_SIZE, "%d\n", link_rate);
	91	}
	92
	93	static DEVICE_ATTR_RO(address);
	94	static DEVICE_ATTR_RO(atmaddress);
	95	static DEVICE_ATTR_RO(atmindex);
	96	static DEVICE_ATTR_RO(carrier);
	97	static DEVICE_ATTR_RO(type);
	98	static DEVICE_ATTR_RO(link_rate);
	99
	100	static struct device_attribute *atm_attrs[] = {
	101	&dev_attr_atmaddress,
	102	&dev_attr_address,
	103	&dev_attr_atmindex,
	104	&dev_attr_carrier,
	105	&dev_attr_type,
	106	&dev_attr_link_rate,
	107	NULL
	108	};
	109
	110
	111	static int atm_uevent(const struct device cdev, struct kobj_uevent_env env)
	112	{
	113	const struct atm_dev *adev;
	114
	115	if (!cdev)
	116	return -ENODEV;
	117
	118	adev = to_atm_dev(cdev);
	119
	120	if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number))
	121	return -ENOMEM;
	122
	123	return 0;
	124	}
	125
	126	static void atm_release(struct device *cdev)
	127	{
	128	struct atm_dev *adev = to_atm_dev(cdev);
	129
	130	kfree(adev);
	131	}
	132
	133	static struct class atm_class = {
	134	.name = "atm",
	135	.dev_release = atm_release,
	136	.dev_uevent = atm_uevent,
	137	};
	138
	139	int atm_register_sysfs(struct atm_dev adev, struct device parent)
	140	{
	141	struct device *cdev = &adev->class_dev;
	142	int i, j, err;
	143
	144	cdev->class = &atm_class;
	145	cdev->parent = parent;
	146	dev_set_drvdata(cdev, adev);
	147
	148	dev_set_name(cdev, "%s%d", adev->type, adev->number);
	149	err = device_register(cdev);
	150	if (err < 0)
	151	return err;
	152
	153	for (i = 0; atm_attrs[i]; i++) {
	154	err = device_create_file(cdev, atm_attrs[i]);
	155	if (err)
	156	goto err_out;
	157	}
	158
	159	return 0;
	160
	161	err_out:
	162	for (j = 0; j < i; j++)
	163	device_remove_file(cdev, atm_attrs[j]);
	164	device_del(cdev);
	165	return err;
	166	}
	167
	168	void atm_unregister_sysfs(struct atm_dev *adev)
	169	{
	170	struct device *cdev = &adev->class_dev;
	171
	172	device_del(cdev);
	173	}
	174
	175	int __init atm_sysfs_init(void)
	176	{
	177	return class_register(&atm_class);
	178	}
	179
	180	void __exit atm_sysfs_exit(void)
	181	{
	182	class_unregister(&atm_class);
	183	}