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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iio_utils.h (2686B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2#ifndef _IIO_UTILS_H_
      3#define _IIO_UTILS_H_
      4
      5/* IIO - useful set of util functionality
      6 *
      7 * Copyright (c) 2008 Jonathan Cameron
      8 */
      9
     10#include <stdint.h>
     11
     12/* Made up value to limit allocation sizes */
     13#define IIO_MAX_NAME_LENGTH 64
     14
     15#define FORMAT_SCAN_ELEMENTS_DIR "%s/buffer%d"
     16#define FORMAT_EVENTS_DIR "%s/events"
     17#define FORMAT_TYPE_FILE "%s_type"
     18
     19#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
     20
     21extern const char *iio_dir;
     22
     23/**
     24 * struct iio_channel_info - information about a given channel
     25 * @name: channel name
     26 * @generic_name: general name for channel type
     27 * @scale: scale factor to be applied for conversion to si units
     28 * @offset: offset to be applied for conversion to si units
     29 * @index: the channel index in the buffer output
     30 * @bytes: number of bytes occupied in buffer output
     31 * @bits_used: number of valid bits of data
     32 * @shift: amount of bits to shift right data before applying bit mask
     33 * @mask: a bit mask for the raw output
     34 * @be: flag if data is big endian
     35 * @is_signed: is the raw value stored signed
     36 * @location: data offset for this channel inside the buffer (in bytes)
     37 **/
     38struct iio_channel_info {
     39	char *name;
     40	char *generic_name;
     41	float scale;
     42	float offset;
     43	unsigned index;
     44	unsigned bytes;
     45	unsigned bits_used;
     46	unsigned shift;
     47	uint64_t mask;
     48	unsigned be;
     49	unsigned is_signed;
     50	unsigned location;
     51};
     52
     53static inline int iioutils_check_suffix(const char *str, const char *suffix)
     54{
     55	return strlen(str) >= strlen(suffix) &&
     56		strncmp(str+strlen(str)-strlen(suffix),
     57			suffix, strlen(suffix)) == 0;
     58}
     59
     60int iioutils_break_up_name(const char *full_name, char **generic_name);
     61int iioutils_get_param_float(float *output, const char *param_name,
     62			     const char *device_dir, const char *name,
     63			     const char *generic_name);
     64void bsort_channel_array_by_index(struct iio_channel_info *ci_array, int cnt);
     65int build_channel_array(const char *device_dir, int buffer_idx,
     66			struct iio_channel_info **ci_array, int *counter);
     67int find_type_by_name(const char *name, const char *type);
     68int write_sysfs_int(const char *filename, const char *basedir, int val);
     69int write_sysfs_int_and_verify(const char *filename, const char *basedir,
     70			       int val);
     71int write_sysfs_string_and_verify(const char *filename, const char *basedir,
     72				  const char *val);
     73int write_sysfs_string(const char *filename, const char *basedir,
     74		       const char *val);
     75int read_sysfs_posint(const char *filename, const char *basedir);
     76int read_sysfs_float(const char *filename, const char *basedir, float *val);
     77int read_sysfs_string(const char *filename, const char *basedir, char *str);
     78
     79#endif /* _IIO_UTILS_H_ */