cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sysfs.c (2224B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *
      4 * Authors:
      5 * Alexander Aring <aar@pengutronix.de>
      6 *
      7 * Based on: net/wireless/sysfs.c
      8 */
      9
     10#include <linux/device.h>
     11#include <linux/rtnetlink.h>
     12
     13#include <net/cfg802154.h>
     14
     15#include "core.h"
     16#include "sysfs.h"
     17#include "rdev-ops.h"
     18
     19static inline struct cfg802154_registered_device *
     20dev_to_rdev(struct device *dev)
     21{
     22	return container_of(dev, struct cfg802154_registered_device,
     23			    wpan_phy.dev);
     24}
     25
     26#define SHOW_FMT(name, fmt, member)					\
     27static ssize_t name ## _show(struct device *dev,			\
     28			     struct device_attribute *attr,		\
     29			     char *buf)					\
     30{									\
     31	return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);	\
     32}									\
     33static DEVICE_ATTR_RO(name)
     34
     35SHOW_FMT(index, "%d", wpan_phy_idx);
     36
     37static ssize_t name_show(struct device *dev,
     38			 struct device_attribute *attr,
     39			 char *buf)
     40{
     41	struct wpan_phy *wpan_phy = &dev_to_rdev(dev)->wpan_phy;
     42
     43	return sprintf(buf, "%s\n", dev_name(&wpan_phy->dev));
     44}
     45static DEVICE_ATTR_RO(name);
     46
     47static void wpan_phy_release(struct device *dev)
     48{
     49	struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
     50
     51	cfg802154_dev_free(rdev);
     52}
     53
     54static struct attribute *pmib_attrs[] = {
     55	&dev_attr_index.attr,
     56	&dev_attr_name.attr,
     57	NULL,
     58};
     59ATTRIBUTE_GROUPS(pmib);
     60
     61#ifdef CONFIG_PM_SLEEP
     62static int wpan_phy_suspend(struct device *dev)
     63{
     64	struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
     65	int ret = 0;
     66
     67	if (rdev->ops->suspend) {
     68		rtnl_lock();
     69		ret = rdev_suspend(rdev);
     70		rtnl_unlock();
     71	}
     72
     73	return ret;
     74}
     75
     76static int wpan_phy_resume(struct device *dev)
     77{
     78	struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
     79	int ret = 0;
     80
     81	if (rdev->ops->resume) {
     82		rtnl_lock();
     83		ret = rdev_resume(rdev);
     84		rtnl_unlock();
     85	}
     86
     87	return ret;
     88}
     89
     90static SIMPLE_DEV_PM_OPS(wpan_phy_pm_ops, wpan_phy_suspend, wpan_phy_resume);
     91#define WPAN_PHY_PM_OPS (&wpan_phy_pm_ops)
     92#else
     93#define WPAN_PHY_PM_OPS NULL
     94#endif
     95
     96struct class wpan_phy_class = {
     97	.name = "ieee802154",
     98	.dev_release = wpan_phy_release,
     99	.dev_groups = pmib_groups,
    100	.pm = WPAN_PHY_PM_OPS,
    101};
    102
    103int wpan_phy_sysfs_init(void)
    104{
    105	return class_register(&wpan_phy_class);
    106}
    107
    108void wpan_phy_sysfs_exit(void)
    109{
    110	class_unregister(&wpan_phy_class);
    111}