linux/drivers/net/ethernet/intel/ice/ice_debugfs.c

// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2022, Intel Corporation. */

#include <linux/fs.h>
#include <linux/debugfs.h>
#include <linux/random.h>
#include <linux/vmalloc.h>
#include "ice.h"

static struct dentry *ice_debugfs_root;

/* create a define that has an extra module that doesn't really exist. this
 * is so we can add a module 'all' to easily enable/disable all the modules
 */
#define ICE_NR_FW_LOG_MODULES …

/* the ordering in this array is important. it matches the ordering of the
 * values in the FW so the index is the same value as in ice_aqc_fw_logging_mod
 */
static const char * const ice_fwlog_module_string[] = …;

/* the ordering in this array is important. it matches the ordering of the
 * values in the FW so the index is the same value as in ice_fwlog_level
 */
static const char * const ice_fwlog_level_string[] = …;

static const char * const ice_fwlog_log_size[] = …;

/**
 * ice_fwlog_print_module_cfg - print current FW logging module configuration
 * @hw: pointer to the HW structure
 * @module: module to print
 * @s: the seq file to put data into
 */
static void
ice_fwlog_print_module_cfg(struct ice_hw *hw, int module, struct seq_file *s)
{ … }

static int ice_find_module_by_dentry(struct ice_pf *pf, struct dentry *d)
{ … }

/**
 * ice_debugfs_module_show - read from 'module' file
 * @s: the opened file
 * @v: pointer to the offset
 */
static int ice_debugfs_module_show(struct seq_file *s, void *v)
{ … }

static int ice_debugfs_module_open(struct inode *inode, struct file *filp)
{ … }

/**
 * ice_debugfs_module_write - write into 'module' file
 * @filp: the opened file
 * @buf: where to find the user's data
 * @count: the length of the user's data
 * @ppos: file position offset
 */
static ssize_t
ice_debugfs_module_write(struct file *filp, const char __user *buf,
			 size_t count, loff_t *ppos)
{ … }

static const struct file_operations ice_debugfs_module_fops = …;

/**
 * ice_debugfs_nr_messages_read - read from 'nr_messages' file
 * @filp: the opened file
 * @buffer: where to write the data for the user to read
 * @count: the size of the user's buffer
 * @ppos: file position offset
 */
static ssize_t ice_debugfs_nr_messages_read(struct file *filp,
					    char __user *buffer, size_t count,
					    loff_t *ppos)
{ … }

/**
 * ice_debugfs_nr_messages_write - write into 'nr_messages' file
 * @filp: the opened file
 * @buf: where to find the user's data
 * @count: the length of the user's data
 * @ppos: file position offset
 */
static ssize_t
ice_debugfs_nr_messages_write(struct file *filp, const char __user *buf,
			      size_t count, loff_t *ppos)
{ … }

static const struct file_operations ice_debugfs_nr_messages_fops = …;

/**
 * ice_debugfs_enable_read - read from 'enable' file
 * @filp: the opened file
 * @buffer: where to write the data for the user to read
 * @count: the size of the user's buffer
 * @ppos: file position offset
 */
static ssize_t ice_debugfs_enable_read(struct file *filp,
				       char __user *buffer, size_t count,
				       loff_t *ppos)
{ … }

/**
 * ice_debugfs_enable_write - write into 'enable' file
 * @filp: the opened file
 * @buf: where to find the user's data
 * @count: the length of the user's data
 * @ppos: file position offset
 */
static ssize_t
ice_debugfs_enable_write(struct file *filp, const char __user *buf,
			 size_t count, loff_t *ppos)
{ … }

static const struct file_operations ice_debugfs_enable_fops = …;

/**
 * ice_debugfs_log_size_read - read from 'log_size' file
 * @filp: the opened file
 * @buffer: where to write the data for the user to read
 * @count: the size of the user's buffer
 * @ppos: file position offset
 */
static ssize_t ice_debugfs_log_size_read(struct file *filp,
					 char __user *buffer, size_t count,
					 loff_t *ppos)
{ … }

/**
 * ice_debugfs_log_size_write - write into 'log_size' file
 * @filp: the opened file
 * @buf: where to find the user's data
 * @count: the length of the user's data
 * @ppos: file position offset
 */
static ssize_t
ice_debugfs_log_size_write(struct file *filp, const char __user *buf,
			   size_t count, loff_t *ppos)
{ … }

static const struct file_operations ice_debugfs_log_size_fops = …;

/**
 * ice_debugfs_data_read - read from 'data' file
 * @filp: the opened file
 * @buffer: where to write the data for the user to read
 * @count: the size of the user's buffer
 * @ppos: file position offset
 */
static ssize_t ice_debugfs_data_read(struct file *filp, char __user *buffer,
				     size_t count, loff_t *ppos)
{ … }

/**
 * ice_debugfs_data_write - write into 'data' file
 * @filp: the opened file
 * @buf: where to find the user's data
 * @count: the length of the user's data
 * @ppos: file position offset
 */
static ssize_t
ice_debugfs_data_write(struct file *filp, const char __user *buf, size_t count,
		       loff_t *ppos)
{ … }

static const struct file_operations ice_debugfs_data_fops = …;

/**
 * ice_debugfs_fwlog_init - setup the debugfs directory
 * @pf: the ice that is starting up
 */
void ice_debugfs_fwlog_init(struct ice_pf *pf)
{ … }

/**
 * ice_debugfs_pf_deinit - cleanup PF's debugfs
 * @pf: pointer to the PF struct
 */
void ice_debugfs_pf_deinit(struct ice_pf *pf)
{ … }

/**
 * ice_debugfs_init - create root directory for debugfs entries
 */
void ice_debugfs_init(void)
{ … }

/**
 * ice_debugfs_exit - remove debugfs entries
 */
void ice_debugfs_exit(void)
{ … }