1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * This file is part of wl1271
4  *
5  * Copyright (C) 2009 Nokia Corporation
6  *
7  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8  */
9 
10 #ifndef __DEBUGFS_H__
11 #define __DEBUGFS_H__
12 
13 #include "wlcore.h"
14 
15 __printf(4, 5) int wl1271_format_buffer(char __user *userbuf, size_t count,
16 					loff_t *ppos, char *fmt, ...);
17 
18 int wl1271_debugfs_init(struct wl1271 *wl);
19 void wl1271_debugfs_exit(struct wl1271 *wl);
20 void wl1271_debugfs_reset(struct wl1271 *wl);
21 void wl1271_debugfs_update_stats(struct wl1271 *wl);
22 
23 #define DEBUGFS_FORMAT_BUFFER_SIZE 256
24 
25 #define DEBUGFS_READONLY_FILE(name, fmt, value...)			\
26 static ssize_t name## _read(struct file *file, char __user *userbuf,	\
27 			    size_t count, loff_t *ppos)			\
28 {									\
29 	struct wl1271 *wl = file->private_data;				\
30 	return wl1271_format_buffer(userbuf, count, ppos,		\
31 				    fmt "\n", ##value);			\
32 }									\
33 									\
34 static const struct file_operations name## _ops = {			\
35 	.read = name## _read,						\
36 	.open = simple_open,						\
37 	.llseek	= generic_file_llseek,					\
38 };
39 
40 #define DEBUGFS_ADD(name, parent)					\
41 	do {								\
42 		debugfs_create_file(#name, 0400, parent,		\
43 				    wl, &name## _ops);			\
44 	} while (0)
45 
46 
47 #define DEBUGFS_ADD_PREFIX(prefix, name, parent)			\
48 	do {								\
49 		debugfs_create_file(#name, 0400, parent,		\
50 				    wl, &prefix## _## name## _ops);	\
51 	} while (0)
52 
53 #define DEBUGFS_FWSTATS_FILE(sub, name, fmt, struct_type)		\
54 static ssize_t sub## _ ##name## _read(struct file *file,		\
55 				      char __user *userbuf,		\
56 				      size_t count, loff_t *ppos)	\
57 {									\
58 	struct wl1271 *wl = file->private_data;				\
59 	struct struct_type *stats = wl->stats.fw_stats;			\
60 									\
61 	wl1271_debugfs_update_stats(wl);				\
62 									\
63 	return wl1271_format_buffer(userbuf, count, ppos, fmt "\n",	\
64 				    stats->sub.name);			\
65 }									\
66 									\
67 static const struct file_operations sub## _ ##name## _ops = {		\
68 	.read = sub## _ ##name## _read,					\
69 	.open = simple_open,						\
70 	.llseek	= generic_file_llseek,					\
71 };
72 
73 #define DEBUGFS_FWSTATS_FILE_ARRAY(sub, name, len, struct_type)		\
74 static ssize_t sub## _ ##name## _read(struct file *file,		\
75 				      char __user *userbuf,		\
76 				      size_t count, loff_t *ppos)	\
77 {									\
78 	struct wl1271 *wl = file->private_data;				\
79 	struct struct_type *stats = wl->stats.fw_stats;			\
80 	char buf[DEBUGFS_FORMAT_BUFFER_SIZE] = "";			\
81 	int res, i;							\
82 									\
83 	wl1271_debugfs_update_stats(wl);				\
84 									\
85 	for (i = 0; i < len; i++)					\
86 		res = snprintf(buf, sizeof(buf), "%s[%d] = %d\n",	\
87 			       buf, i, stats->sub.name[i]);		\
88 									\
89 	return wl1271_format_buffer(userbuf, count, ppos, "%s", buf);	\
90 }									\
91 									\
92 static const struct file_operations sub## _ ##name## _ops = {		\
93 	.read = sub## _ ##name## _read,					\
94 	.open = simple_open,						\
95 	.llseek	= generic_file_llseek,					\
96 };
97 
98 #define DEBUGFS_FWSTATS_ADD(sub, name)					\
99 	DEBUGFS_ADD(sub## _ ##name, stats)
100 
101 
102 #endif /* WL1271_DEBUGFS_H */
103