2 * NewportMedia WiFi chipset driver test tools - wilc-debug
3 * Copyright (c) 2012 NewportMedia Inc.
4 * Author: SSW <sswd@wilcsemic.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
12 #if defined(WILC_DEBUGFS)
13 #include <linux/module.h>
14 #include <linux/debugfs.h>
15 #include <linux/poll.h>
16 #include <linux/sched.h>
18 #include "wilc_wlan_if.h"
21 static struct dentry *wilc_dir;
24 * --------------------------------------------------------------------------------
27 #define DBG_REGION_ALL (GENERIC_DBG | HOSTAPD_DBG | HOSTINF_DBG | CORECONFIG_DBG | CFG80211_DBG | INT_DBG | TX_DBG | RX_DBG | LOCK_DBG | INIT_DBG | BUS_DBG | MEM_DBG)
28 #define DBG_LEVEL_ALL (DEBUG | INFO | WRN | ERR)
29 atomic_t REGION = ATOMIC_INIT(INIT_DBG | GENERIC_DBG | CFG80211_DBG | FIRM_DBG | HOSTAPD_DBG);
30 atomic_t DEBUG_LEVEL = ATOMIC_INIT(ERR);
33 * --------------------------------------------------------------------------------
37 static ssize_t wilc_debug_level_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos)
42 /* only allow read from start */
46 res = scnprintf(buf, sizeof(buf), "Debug Level: %x\n", atomic_read(&DEBUG_LEVEL));
48 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
51 static ssize_t wilc_debug_level_write(struct file *filp, const char __user *buf,
52 size_t count, loff_t *ppos)
57 ret = kstrtouint_from_user(buf, count, 16, &flag);
61 if (flag > DBG_LEVEL_ALL) {
62 printk("%s, value (0x%08x) is out of range, stay previous flag (0x%08x)\n", __func__, flag, atomic_read(&DEBUG_LEVEL));
66 atomic_set(&DEBUG_LEVEL, (int)flag);
69 printk("Debug-level disabled\n");
71 printk("Debug-level enabled\n");
76 static ssize_t wilc_debug_region_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos)
81 /* only allow read from start */
85 res = scnprintf(buf, sizeof(buf), "Debug region: %x\n", atomic_read(®ION));
87 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
90 static ssize_t wilc_debug_region_write(struct file *filp, const char *buf, size_t count, loff_t *ppos)
92 char buffer[128] = {};
95 if (count > sizeof(buffer))
98 if (copy_from_user(buffer, buf, count)) {
102 flag = buffer[0] - '0';
104 if (flag > DBG_REGION_ALL) {
105 printk("%s, value (0x%08x) is out of range, stay previous flag (0x%08x)\n", __func__, flag, atomic_read(®ION));
109 atomic_set(®ION, (int)flag);
110 printk("new debug-region is %x\n", atomic_read(®ION));
116 * --------------------------------------------------------------------------------
119 #define FOPS(_open, _read, _write, _poll) { \
120 .owner = THIS_MODULE, \
127 struct wilc_debugfs_info_t {
131 struct file_operations fops;
134 static struct wilc_debugfs_info_t debugfs_info[] = {
135 { "wilc_debug_level", 0666, (DEBUG | ERR), FOPS(NULL, wilc_debug_level_read, wilc_debug_level_write, NULL), },
136 { "wilc_debug_region", 0666, (INIT_DBG | GENERIC_DBG | CFG80211_DBG), FOPS(NULL, wilc_debug_region_read, wilc_debug_region_write, NULL), },
139 int wilc_debugfs_init(void)
143 struct dentry *debugfs_files;
144 struct wilc_debugfs_info_t *info;
146 wilc_dir = debugfs_create_dir("wilc_wifi", NULL);
147 if (wilc_dir == ERR_PTR(-ENODEV)) {
148 /* it's not error. the debugfs is just not being enabled. */
149 printk("ERR, kernel has built without debugfs support\n");
154 printk("ERR, debugfs create dir\n");
158 for (i = 0; i < ARRAY_SIZE(debugfs_info); i++) {
159 info = &debugfs_info[i];
160 debugfs_files = debugfs_create_file(info->name,
166 if (!debugfs_files) {
167 printk("ERR fail to create the debugfs file, %s\n", info->name);
168 debugfs_remove_recursive(wilc_dir);
175 void wilc_debugfs_remove(void)
177 debugfs_remove_recursive(wilc_dir);