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 (3569B)

      1// SPDX-License-Identifier: GPL-2.0
      2#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
      3
      4#include <linux/device.h>
      5#include <linux/pci.h>
      6
      7#include "ath5k.h"
      8#include "reg.h"
      9
     10#define SIMPLE_SHOW_STORE(name, get, set)				\
     11static ssize_t ath5k_attr_show_##name(struct device *dev,		\
     12			struct device_attribute *attr,			\
     13			char *buf)					\
     14{									\
     15	struct ieee80211_hw *hw = dev_get_drvdata(dev);			\
     16	struct ath5k_hw *ah = hw->priv;				\
     17	return sysfs_emit(buf, "%d\n", get);			\
     18}									\
     19									\
     20static ssize_t ath5k_attr_store_##name(struct device *dev,		\
     21			struct device_attribute *attr,			\
     22			const char *buf, size_t count)			\
     23{									\
     24	struct ieee80211_hw *hw = dev_get_drvdata(dev);			\
     25	struct ath5k_hw *ah = hw->priv;				\
     26	int val, ret;							\
     27									\
     28	ret = kstrtoint(buf, 10, &val);					\
     29	if (ret < 0)							\
     30		return ret;						\
     31	set(ah, val);						\
     32	return count;							\
     33}									\
     34static DEVICE_ATTR(name, 0644,						\
     35		   ath5k_attr_show_##name, ath5k_attr_store_##name)
     36
     37#define SIMPLE_SHOW(name, get)						\
     38static ssize_t ath5k_attr_show_##name(struct device *dev,		\
     39			struct device_attribute *attr,			\
     40			char *buf)					\
     41{									\
     42	struct ieee80211_hw *hw = dev_get_drvdata(dev);			\
     43	struct ath5k_hw *ah = hw->priv;				\
     44	return sysfs_emit(buf, "%d\n", get);			\
     45}									\
     46static DEVICE_ATTR(name, 0444, ath5k_attr_show_##name, NULL)
     47
     48/*** ANI ***/
     49
     50SIMPLE_SHOW_STORE(ani_mode, ah->ani_state.ani_mode, ath5k_ani_init);
     51SIMPLE_SHOW_STORE(noise_immunity_level, ah->ani_state.noise_imm_level,
     52			ath5k_ani_set_noise_immunity_level);
     53SIMPLE_SHOW_STORE(spur_level, ah->ani_state.spur_level,
     54			ath5k_ani_set_spur_immunity_level);
     55SIMPLE_SHOW_STORE(firstep_level, ah->ani_state.firstep_level,
     56			ath5k_ani_set_firstep_level);
     57SIMPLE_SHOW_STORE(ofdm_weak_signal_detection, ah->ani_state.ofdm_weak_sig,
     58			ath5k_ani_set_ofdm_weak_signal_detection);
     59SIMPLE_SHOW_STORE(cck_weak_signal_detection, ah->ani_state.cck_weak_sig,
     60			ath5k_ani_set_cck_weak_signal_detection);
     61SIMPLE_SHOW(spur_level_max, ah->ani_state.max_spur_level);
     62
     63static ssize_t ath5k_attr_show_noise_immunity_level_max(struct device *dev,
     64			struct device_attribute *attr,
     65			char *buf)
     66{
     67	return sysfs_emit(buf, "%d\n", ATH5K_ANI_MAX_NOISE_IMM_LVL);
     68}
     69static DEVICE_ATTR(noise_immunity_level_max, 0444,
     70		   ath5k_attr_show_noise_immunity_level_max, NULL);
     71
     72static ssize_t ath5k_attr_show_firstep_level_max(struct device *dev,
     73			struct device_attribute *attr,
     74			char *buf)
     75{
     76	return sysfs_emit(buf, "%d\n", ATH5K_ANI_MAX_FIRSTEP_LVL);
     77}
     78static DEVICE_ATTR(firstep_level_max, 0444,
     79		   ath5k_attr_show_firstep_level_max, NULL);
     80
     81static struct attribute *ath5k_sysfs_entries_ani[] = {
     82	&dev_attr_ani_mode.attr,
     83	&dev_attr_noise_immunity_level.attr,
     84	&dev_attr_spur_level.attr,
     85	&dev_attr_firstep_level.attr,
     86	&dev_attr_ofdm_weak_signal_detection.attr,
     87	&dev_attr_cck_weak_signal_detection.attr,
     88	&dev_attr_noise_immunity_level_max.attr,
     89	&dev_attr_spur_level_max.attr,
     90	&dev_attr_firstep_level_max.attr,
     91	NULL
     92};
     93
     94static struct attribute_group ath5k_attribute_group_ani = {
     95	.name = "ani",
     96	.attrs = ath5k_sysfs_entries_ani,
     97};
     98
     99
    100/*** register / unregister ***/
    101
    102int
    103ath5k_sysfs_register(struct ath5k_hw *ah)
    104{
    105	struct device *dev = ah->dev;
    106	int err;
    107
    108	err = sysfs_create_group(&dev->kobj, &ath5k_attribute_group_ani);
    109	if (err) {
    110		ATH5K_ERR(ah, "failed to create sysfs group\n");
    111		return err;
    112	}
    113
    114	return 0;
    115}
    116
    117void
    118ath5k_sysfs_unregister(struct ath5k_hw *ah)
    119{
    120	struct device *dev = ah->dev;
    121
    122	sysfs_remove_group(&dev->kobj, &ath5k_attribute_group_ani);
    123}