debugfs.h

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/*
 * This file is part of wl1271
 *
 * Copyright (C) 2009 Nokia Corporation
 *
 * Contact: Luciano Coelho <[email protected]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#ifndef __DEBUGFS_H__
#define __DEBUGFS_H__

#include "wlcore.h"

int wl1271_format_buffer(char __user *userbuf, size_t count,
             loff_t *ppos, char *fmt, ...);

int wl1271_debugfs_init(struct wl1271 *wl);
void wl1271_debugfs_exit(struct wl1271 *wl);
void wl1271_debugfs_reset(struct wl1271 *wl);
void wl1271_debugfs_update_stats(struct wl1271 *wl);

#define DEBUGFS_FORMAT_BUFFER_SIZE 256

#define DEBUGFS_READONLY_FILE(name, fmt, value...)          \
static ssize_t name## _read(struct file *file, char __user *userbuf,    \
                size_t count, loff_t *ppos)         \
{                                   \
    struct wl1271 *wl = file->private_data;             \
    return wl1271_format_buffer(userbuf, count, ppos,       \
                    fmt "\n", ##value);         \
}                                   \
                                    \
static const struct file_operations name## _ops = {         \
    .read = name## _read,                       \
    .open = simple_open,                        \
    .llseek = generic_file_llseek,                  \
};

#define DEBUGFS_ADD(name, parent)                   \
    do {                                \
        entry = debugfs_create_file(#name, 0400, parent,    \
                        wl, &name## _ops);      \
        if (!entry || IS_ERR(entry))                \
            goto err;                   \
    } while (0);


#define DEBUGFS_ADD_PREFIX(prefix, name, parent)            \
    do {                                \
        entry = debugfs_create_file(#name, 0400, parent,    \
                    wl, &prefix## _## name## _ops); \
        if (!entry || IS_ERR(entry))                \
            goto err;                   \
    } while (0);

#define DEBUGFS_FWSTATS_FILE(sub, name, fmt, struct_type)       \
static ssize_t sub## _ ##name## _read(struct file *file,        \
                      char __user *userbuf,     \
                      size_t count, loff_t *ppos)   \
{                                   \
    struct wl1271 *wl = file->private_data;             \
    struct struct_type *stats = wl->stats.fw_stats;         \
                                    \
    wl1271_debugfs_update_stats(wl);                \
                                    \
    return wl1271_format_buffer(userbuf, count, ppos, fmt "\n", \
                    stats->sub.name);           \
}                                   \
                                    \
static const struct file_operations sub## _ ##name## _ops = {       \
    .read = sub## _ ##name## _read,                 \
    .open = simple_open,                        \
    .llseek = generic_file_llseek,                  \
};

#define DEBUGFS_FWSTATS_FILE_ARRAY(sub, name, len, struct_type)     \
static ssize_t sub## _ ##name## _read(struct file *file,        \
                      char __user *userbuf,     \
                      size_t count, loff_t *ppos)   \
{                                   \
    struct wl1271 *wl = file->private_data;             \
    struct struct_type *stats = wl->stats.fw_stats;         \
    char buf[DEBUGFS_FORMAT_BUFFER_SIZE] = "";          \
    int res, i;                         \
                                    \
    wl1271_debugfs_update_stats(wl);                \
                                    \
    for (i = 0; i < len; i++)                   \
        res = snprintf(buf, sizeof(buf), "%s[%d] = %d\n",   \
                   buf, i, stats->sub.name[i]);     \
                                    \
    return wl1271_format_buffer(userbuf, count, ppos, "%s", buf);   \
}                                   \
                                    \
static const struct file_operations sub## _ ##name## _ops = {       \
    .read = sub## _ ##name## _read,                 \
    .open = simple_open,                        \
    .llseek = generic_file_llseek,                  \
};

#define DEBUGFS_FWSTATS_ADD(sub, name)                  \
    DEBUGFS_ADD(sub## _ ##name, stats)


#endif /* WL1271_DEBUGFS_H */