tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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