LXR linux/drivers/net/wireless/ti/wlcore/debugfs.h

   1/*
   2 * This file is part of wl1271
   3 *
   4 * Copyright (C) 2009 Nokia Corporation
   5 *
   6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License
  10 * version 2 as published by the Free Software Foundation.
  11 *
  12 * This program is distributed in the hope that it will be useful, but
  13 * WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 * General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20 * 02110-1301 USA
  21 *
  22 */
  23
  24#ifndef __DEBUGFS_H__
  25#define __DEBUGFS_H__
  26
  27#include "wlcore.h"
  28
  29int wl1271_format_buffer(char __user *userbuf, size_t count,
  30                         loff_t *ppos, char *fmt, ...);
  31
  32int wl1271_debugfs_init(struct wl1271 *wl);
  33void wl1271_debugfs_exit(struct wl1271 *wl);
  34void wl1271_debugfs_reset(struct wl1271 *wl);
  35void wl1271_debugfs_update_stats(struct wl1271 *wl);
  36
  37#define DEBUGFS_FORMAT_BUFFER_SIZE 256
  38
  39#define DEBUGFS_READONLY_FILE(name, fmt, value...)                      \
  40static ssize_t name## _read(struct file *file, char __user *userbuf,    \
  41                            size_t count, loff_t *ppos)                 \
  42{                                                                       \
  43        struct wl1271 *wl = file->private_data;                         \
  44        return wl1271_format_buffer(userbuf, count, ppos,               \
  45                                    fmt "\n", ##value);                 \
  46}                                                                       \
  47                                                                        \
  48static const struct file_operations name## _ops = {                     \
  49        .read = name## _read,                                           \
  50        .open = simple_open,                                            \
  51        .llseek = generic_file_llseek,                                  \
  52};
  53
  54#define DEBUGFS_ADD(name, parent)                                       \
  55        do {                                                            \
  56                entry = debugfs_create_file(#name, 0400, parent,        \
  57                                            wl, &name## _ops);          \
  58                if (!entry || IS_ERR(entry))                            \
  59                        goto err;                                       \
  60        } while (0);
  61
  62
  63#define DEBUGFS_ADD_PREFIX(prefix, name, parent)                        \
  64        do {                                                            \
  65                entry = debugfs_create_file(#name, 0400, parent,        \
  66                                    wl, &prefix## _## name## _ops);     \
  67                if (!entry || IS_ERR(entry))                            \
  68                        goto err;                                       \
  69        } while (0);
  70
  71#define DEBUGFS_FWSTATS_FILE(sub, name, fmt, struct_type)               \
  72static ssize_t sub## _ ##name## _read(struct file *file,                \
  73                                      char __user *userbuf,             \
  74                                      size_t count, loff_t *ppos)       \
  75{                                                                       \
  76        struct wl1271 *wl = file->private_data;                         \
  77        struct struct_type *stats = wl->stats.fw_stats;                 \
  78                                                                        \
  79        wl1271_debugfs_update_stats(wl);                                \
  80                                                                        \
  81        return wl1271_format_buffer(userbuf, count, ppos, fmt "\n",     \
  82                                    stats->sub.name);                   \
  83}                                                                       \
  84                                                                        \
  85static const struct file_operations sub## _ ##name## _ops = {           \
  86        .read = sub## _ ##name## _read,                                 \
  87        .open = simple_open,                                            \
  88        .llseek = generic_file_llseek,                                  \
  89};
  90
  91#define DEBUGFS_FWSTATS_FILE_ARRAY(sub, name, len, struct_type)         \
  92static ssize_t sub## _ ##name## _read(struct file *file,                \
  93                                      char __user *userbuf,             \
  94                                      size_t count, loff_t *ppos)       \
  95{                                                                       \
  96        struct wl1271 *wl = file->private_data;                         \
  97        struct struct_type *stats = wl->stats.fw_stats;                 \
  98        char buf[DEBUGFS_FORMAT_BUFFER_SIZE] = "";                      \
  99        int res, i;                                                     \
 100                                                                        \
 101        wl1271_debugfs_update_stats(wl);                                \
 102                                                                        \
 103        for (i = 0; i < len; i++)                                       \
 104                res = snprintf(buf, sizeof(buf), "%s[%d] = %d\n",       \
 105                               buf, i, stats->sub.name[i]);             \
 106                                                                        \
 107        return wl1271_format_buffer(userbuf, count, ppos, "%s", buf);   \
 108}                                                                       \
 109                                                                        \
 110static const struct file_operations sub## _ ##name## _ops = {           \
 111        .read = sub## _ ##name## _read,                                 \
 112        .open = simple_open,                                            \
 113        .llseek = generic_file_llseek,                                  \
 114};
 115
 116#define DEBUGFS_FWSTATS_ADD(sub, name)                                  \
 117        DEBUGFS_ADD(sub## _ ##name, stats)
 118
 119
 120#endif /* WL1271_DEBUGFS_H */
 121