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.h (4814B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/* The industrial I/O core
      3 *
      4 *Copyright (c) 2008 Jonathan Cameron
      5 *
      6 * General attributes
      7 */
      8
      9#ifndef _INDUSTRIAL_IO_SYSFS_H_
     10#define _INDUSTRIAL_IO_SYSFS_H_
     11
     12struct iio_buffer;
     13struct iio_chan_spec;
     14
     15/**
     16 * struct iio_dev_attr - iio specific device attribute
     17 * @dev_attr:	underlying device attribute
     18 * @address:	associated register address
     19 * @l:		list head for maintaining list of dynamically created attrs
     20 * @c:		specification for the underlying channel
     21 * @buffer:	the IIO buffer to which this attribute belongs to (if any)
     22 */
     23struct iio_dev_attr {
     24	struct device_attribute dev_attr;
     25	u64 address;
     26	struct list_head l;
     27	struct iio_chan_spec const *c;
     28	struct iio_buffer *buffer;
     29};
     30
     31#define to_iio_dev_attr(_dev_attr)				\
     32	container_of(_dev_attr, struct iio_dev_attr, dev_attr)
     33
     34ssize_t iio_read_const_attr(struct device *dev,
     35			    struct device_attribute *attr,
     36			    char *len);
     37
     38/**
     39 * struct iio_const_attr - constant device specific attribute
     40 *                         often used for things like available modes
     41 * @string:	attribute string
     42 * @dev_attr:	underlying device attribute
     43 */
     44struct iio_const_attr {
     45	const char *string;
     46	struct device_attribute dev_attr;
     47};
     48
     49#define to_iio_const_attr(_dev_attr) \
     50	container_of(_dev_attr, struct iio_const_attr, dev_attr)
     51
     52/* Some attributes will be hard coded (device dependent) and not require an
     53   address, in these cases pass a negative */
     54#define IIO_ATTR(_name, _mode, _show, _store, _addr)		\
     55	{ .dev_attr = __ATTR(_name, _mode, _show, _store),	\
     56	  .address = _addr }
     57
     58#define IIO_ATTR_RO(_name, _addr)       \
     59	{ .dev_attr = __ATTR_RO(_name), \
     60	  .address = _addr }
     61
     62#define IIO_ATTR_WO(_name, _addr)       \
     63	{ .dev_attr = __ATTR_WO(_name), \
     64	  .address = _addr }
     65
     66#define IIO_ATTR_RW(_name, _addr)       \
     67	{ .dev_attr = __ATTR_RW(_name), \
     68	  .address = _addr }
     69
     70#define IIO_DEVICE_ATTR(_name, _mode, _show, _store, _addr)	\
     71	struct iio_dev_attr iio_dev_attr_##_name		\
     72	= IIO_ATTR(_name, _mode, _show, _store, _addr)
     73
     74#define IIO_DEVICE_ATTR_RO(_name, _addr)                       \
     75	struct iio_dev_attr iio_dev_attr_##_name                \
     76	= IIO_ATTR_RO(_name, _addr)
     77
     78#define IIO_DEVICE_ATTR_WO(_name, _addr)                       \
     79	struct iio_dev_attr iio_dev_attr_##_name                \
     80	= IIO_ATTR_WO(_name, _addr)
     81
     82#define IIO_DEVICE_ATTR_RW(_name, _addr)                                   \
     83	struct iio_dev_attr iio_dev_attr_##_name                            \
     84	= IIO_ATTR_RW(_name, _addr)
     85
     86#define IIO_DEVICE_ATTR_NAMED(_vname, _name, _mode, _show, _store, _addr) \
     87	struct iio_dev_attr iio_dev_attr_##_vname			\
     88	= IIO_ATTR(_name, _mode, _show, _store, _addr)
     89
     90#define IIO_CONST_ATTR(_name, _string)					\
     91	struct iio_const_attr iio_const_attr_##_name			\
     92	= { .string = _string,						\
     93	    .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)}
     94
     95#define IIO_CONST_ATTR_NAMED(_vname, _name, _string)			\
     96	struct iio_const_attr iio_const_attr_##_vname			\
     97	= { .string = _string,						\
     98	    .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)}
     99
    100/* Generic attributes of onetype or another */
    101
    102/**
    103 * IIO_DEV_ATTR_SAMP_FREQ - sets any internal clock frequency
    104 * @_mode: sysfs file mode/permissions
    105 * @_show: output method for the attribute
    106 * @_store: input method for the attribute
    107 **/
    108#define IIO_DEV_ATTR_SAMP_FREQ(_mode, _show, _store)			\
    109	IIO_DEVICE_ATTR(sampling_frequency, _mode, _show, _store, 0)
    110
    111/**
    112 * IIO_DEV_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies
    113 * @_show: output method for the attribute
    114 *
    115 * May be mode dependent on some devices
    116 **/
    117#define IIO_DEV_ATTR_SAMP_FREQ_AVAIL(_show)				\
    118	IIO_DEVICE_ATTR(sampling_frequency_available, S_IRUGO, _show, NULL, 0)
    119/**
    120 * IIO_CONST_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies
    121 * @_string: frequency string for the attribute
    122 *
    123 * Constant version
    124 **/
    125#define IIO_CONST_ATTR_SAMP_FREQ_AVAIL(_string)			\
    126	IIO_CONST_ATTR(sampling_frequency_available, _string)
    127
    128/**
    129 * IIO_DEV_ATTR_INT_TIME_AVAIL - list available integration times
    130 * @_show: output method for the attribute
    131 **/
    132#define IIO_DEV_ATTR_INT_TIME_AVAIL(_show)		\
    133	IIO_DEVICE_ATTR(integration_time_available, S_IRUGO, _show, NULL, 0)
    134/**
    135 * IIO_CONST_ATTR_INT_TIME_AVAIL - list available integration times
    136 * @_string: frequency string for the attribute
    137 *
    138 * Constant version
    139 **/
    140#define IIO_CONST_ATTR_INT_TIME_AVAIL(_string)		\
    141	IIO_CONST_ATTR(integration_time_available, _string)
    142
    143#define IIO_DEV_ATTR_TEMP_RAW(_show)			\
    144	IIO_DEVICE_ATTR(in_temp_raw, S_IRUGO, _show, NULL, 0)
    145
    146#define IIO_CONST_ATTR_TEMP_OFFSET(_string)		\
    147	IIO_CONST_ATTR(in_temp_offset, _string)
    148
    149#define IIO_CONST_ATTR_TEMP_SCALE(_string)		\
    150	IIO_CONST_ATTR(in_temp_scale, _string)
    151
    152#endif /* _INDUSTRIAL_IO_SYSFS_H_ */