1/*
  2 * iwmc3200top - Intel Wireless MultiCom 3200 Top Driver
  3 * drivers/misc/iwmc3200top/debufs.c
  4 *
  5 * Copyright (C) 2009 Intel Corporation. All rights reserved.
  6 *
  7 * This program is free software; you can redistribute it and/or
  8 * modify it under the terms of the GNU General Public License version
  9 * 2 as published by the Free Software Foundation.
 10 *
 11 * This program is distributed in the hope that it will be useful,
 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14 * GNU General Public License for more details.
 15 *
 16 * You should have received a copy of the GNU General Public License
 17 * along with this program; if not, write to the Free Software
 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 19 * 02110-1301, USA.
 20 *
 21 *
 22 * Author Name: Maxim Grabarnik <maxim.grabarnink@intel.com>
 23 *  -
 24 *
 25 */
 26
 27#include <linux/kernel.h>
 28#include <linux/slab.h>
 29#include <linux/string.h>
 30#include <linux/ctype.h>
 31#include <linux/mmc/sdio_func.h>
 32#include <linux/mmc/sdio.h>
 33#include <linux/debugfs.h>
 34
 35#include "iwmc3200top.h"
 36#include "fw-msg.h"
 37#include "log.h"
 38#include "debugfs.h"
 39
 40
 41
 42/*      Constants definition        */
 43#define HEXADECIMAL_RADIX	16
 44
 45/*      Functions definition        */
 46
 47
 48#define DEBUGFS_ADD(name, parent) do {					\
 49	dbgfs->dbgfs_##parent##_files.file_##name =			\
 50	debugfs_create_file(#name, 0644, dbgfs->dir_##parent, priv,	\
 51				&iwmct_dbgfs_##name##_ops);		\
 52} while (0)
 53
 54#define DEBUGFS_RM(name)  do {		\
 55	debugfs_remove(name);		\
 56	name = NULL;			\
 57} while (0)
 58
 59#define DEBUGFS_READ_FUNC(name)						\
 60ssize_t iwmct_dbgfs_##name##_read(struct file *file,			\
 61				  char __user *user_buf,		\
 62				  size_t count, loff_t *ppos);
 63
 64#define DEBUGFS_WRITE_FUNC(name)					\
 65ssize_t iwmct_dbgfs_##name##_write(struct file *file,			\
 66				   const char __user *user_buf,		\
 67				   size_t count, loff_t *ppos);
 68
 69#define DEBUGFS_READ_FILE_OPS(name)					\
 70	DEBUGFS_READ_FUNC(name)						\
 71	static const struct file_operations iwmct_dbgfs_##name##_ops = {  \
 72		.read = iwmct_dbgfs_##name##_read,			\
 73		.open = iwmct_dbgfs_open_file_generic,			\
 74		.llseek = generic_file_llseek,				\
 75	};
 76
 77#define DEBUGFS_WRITE_FILE_OPS(name)					\
 78	DEBUGFS_WRITE_FUNC(name)					\
 79	static const struct file_operations iwmct_dbgfs_##name##_ops = {  \
 80		.write = iwmct_dbgfs_##name##_write,			\
 81		.open = iwmct_dbgfs_open_file_generic,			\
 82		.llseek = generic_file_llseek,				\
 83	};
 84
 85#define DEBUGFS_READ_WRITE_FILE_OPS(name)				\
 86	DEBUGFS_READ_FUNC(name)						\
 87	DEBUGFS_WRITE_FUNC(name)					\
 88	static const struct file_operations iwmct_dbgfs_##name##_ops = {\
 89		.write = iwmct_dbgfs_##name##_write,			\
 90		.read = iwmct_dbgfs_##name##_read,			\
 91		.open = iwmct_dbgfs_open_file_generic,			\
 92		.llseek = generic_file_llseek,				\
 93	};
 94
 95
 96/*      Debugfs file ops definitions        */
 97
 98/*
 99 * Create the debugfs files and directories
100 *
101 */
102void iwmct_dbgfs_register(struct iwmct_priv *priv, const char *name)
103{
104	struct iwmct_debugfs *dbgfs;
105
106	dbgfs = kzalloc(sizeof(struct iwmct_debugfs), GFP_KERNEL);
107	if (!dbgfs) {
108		LOG_ERROR(priv, DEBUGFS, "failed to allocate %zd bytes\n",
109					sizeof(struct iwmct_debugfs));
110		return;
111	}
112
113	priv->dbgfs = dbgfs;
114	dbgfs->name = name;
115	dbgfs->dir_drv = debugfs_create_dir(name, NULL);
116	if (!dbgfs->dir_drv) {
117		LOG_ERROR(priv, DEBUGFS, "failed to create debugfs dir\n");
118		return;
119	}
120
121	return;
122}
123
124/**
125 * Remove the debugfs files and directories
126 *
127 */
128void iwmct_dbgfs_unregister(struct iwmct_debugfs *dbgfs)
129{
130	if (!dbgfs)
131		return;
132
133	DEBUGFS_RM(dbgfs->dir_drv);
134	kfree(dbgfs);
135	dbgfs = NULL;
136}
137