kernel/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
  29 __printf(4, 5) int wl1271_format_buffer(char __user *userbuf, size_t count,
  30                                         loff_t *ppos, char *fmt, ...);
  31
  32 int wl1271_debugfs_init(struct wl1271 *wl);
  33 void wl1271_debugfs_exit(struct wl1271 *wl);
  34 void wl1271_debugfs_reset(struct wl1271 *wl);
  35 void wl1271_debugfs_update_stats(struct wl1271 *wl);
  36
  37 #define DEBUGFS_FORMAT_BUFFER_SIZE 256
  38
  39 #define DEBUGFS_READONLY_FILE(name, fmt, value...)                      \
  40 static 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                                                                         \
  48 static 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)               \
  72 static 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                                                                         \
  85 static 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)         \
  92 static 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                                                                         \
 110 static 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 */