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/*
* Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include "wcn36xx.h"
#include "debug.h"
#include "pmc.h"
#include "firmware.h"
#ifdef CONFIG_WCN36XX_DEBUGFS
static ssize_t read_file_bool_bmps(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct wcn36xx *wcn = file->private_data;
struct wcn36xx_vif *vif_priv = NULL;
struct ieee80211_vif *vif = NULL;
char buf[3];
list_for_each_entry(vif_priv, &wcn->vif_list, list) {
vif = wcn36xx_priv_to_vif(vif_priv);
if (NL80211_IFTYPE_STATION == vif->type) {
if (vif_priv->pw_state == WCN36XX_BMPS)
buf[0] = '1';
else
buf[0] = '0';
break;
}
}
buf[1] = '\n';
buf[2] = 0x00;
return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
}
static ssize_t write_file_bool_bmps(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct wcn36xx *wcn = file->private_data;
struct wcn36xx_vif *vif_priv = NULL;
struct ieee80211_vif *vif = NULL;
char buf[32];
int buf_size;
buf_size = min(count, (sizeof(buf)-1));
if (copy_from_user(buf, user_buf, buf_size))
return -EFAULT;
switch (buf[0]) {
case 'y':
case 'Y':
case '1':
list_for_each_entry(vif_priv, &wcn->vif_list, list) {
vif = wcn36xx_priv_to_vif(vif_priv);
if (NL80211_IFTYPE_STATION == vif->type) {
wcn36xx_enable_keep_alive_null_packet(wcn, vif);
wcn36xx_pmc_enter_bmps_state(wcn, vif);
}
}
break;
case 'n':
case 'N':
case '0':
list_for_each_entry(vif_priv, &wcn->vif_list, list) {
vif = wcn36xx_priv_to_vif(vif_priv);
if (NL80211_IFTYPE_STATION == vif->type)
wcn36xx_pmc_exit_bmps_state(wcn, vif);
}
break;
}
return count;
}
static const struct file_operations fops_wcn36xx_bmps = {
.open = simple_open,
.read = read_file_bool_bmps,
.write = write_file_bool_bmps,
};
static ssize_t write_file_dump(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct wcn36xx *wcn = file->private_data;
char buf[255], *tmp;
int buf_size;
u32 arg[WCN36xx_MAX_DUMP_ARGS];
int i;
memset(buf, 0, sizeof(buf));
memset(arg, 0, sizeof(arg));
buf_size = min(count, (sizeof(buf) - 1));
if (copy_from_user(buf, user_buf, buf_size))
return -EFAULT;
tmp = buf;
for (i = 0; i < WCN36xx_MAX_DUMP_ARGS; i++) {
char *begin;
begin = strsep(&tmp, " ");
if (begin == NULL)
break;
if (kstrtos32(begin, 0, &arg[i]) != 0)
break;
}
wcn36xx_info("DUMP args is %d %d %d %d %d\n", arg[0], arg[1], arg[2],
arg[3], arg[4]);
wcn36xx_smd_dump_cmd_req(wcn, arg[0], arg[1], arg[2], arg[3], arg[4]);
return count;
}
static const struct file_operations fops_wcn36xx_dump = {
.open = simple_open,
.write = write_file_dump,
};
static ssize_t read_file_firmware_feature_caps(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct wcn36xx *wcn = file->private_data;
size_t len = 0, buf_len = 2048;
char *buf;
int i;
int ret;
buf = kzalloc(buf_len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
mutex_lock(&wcn->hal_mutex);
for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, i)) {
len += scnprintf(buf + len, buf_len - len, "%s\n",
wcn36xx_firmware_get_cap_name(i));
}
if (len >= buf_len)
break;
}
mutex_unlock(&wcn->hal_mutex);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return ret;
}
static const struct file_operations fops_wcn36xx_firmware_feat_caps = {
.open = simple_open,
.read = read_file_firmware_feature_caps,
};
#define ADD_FILE(name, mode, fop, priv_data) \
do { \
struct dentry *d; \
d = debugfs_create_file(__stringify(name), \
mode, dfs->rootdir, \
priv_data, fop); \
dfs->file_##name.dentry = d; \
if (IS_ERR(d)) { \
wcn36xx_warn("Create the debugfs entry failed");\
dfs->file_##name.dentry = NULL; \
} \
} while (0)
void wcn36xx_debugfs_init(struct wcn36xx *wcn)
{
struct wcn36xx_dfs_entry *dfs = &wcn->dfs;
dfs->rootdir = debugfs_create_dir(KBUILD_MODNAME,
wcn->hw->wiphy->debugfsdir);
if (IS_ERR(dfs->rootdir)) {
wcn36xx_warn("Create the debugfs failed\n");
dfs->rootdir = NULL;
}
ADD_FILE(bmps_switcher, 0600, &fops_wcn36xx_bmps, wcn);
ADD_FILE(dump, 0200, &fops_wcn36xx_dump, wcn);
ADD_FILE(firmware_feat_caps, 0200,
&fops_wcn36xx_firmware_feat_caps, wcn);
}
void wcn36xx_debugfs_exit(struct wcn36xx *wcn)
{
struct wcn36xx_dfs_entry *dfs = &wcn->dfs;
debugfs_remove_recursive(dfs->rootdir);
}
#endif /* CONFIG_WCN36XX_DEBUGFS */
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