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 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 */
121