1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
/******************************************************************************
*
* Copyright(c) 2009-2012 Realtek Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* wlanfae <wlanfae@realtek.com>
* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
* Hsinchu 300, Taiwan.
*
* Larry Finger <Larry.Finger@lwfinger.net>
*
*****************************************************************************/
#include "wifi.h"
#include "stats.h"
#include <linux/export.h>
u8 rtl_query_rxpwrpercentage(char antpower)
{
if ((antpower <= -100) || (antpower >= 20))
return 0;
else if (antpower >= 0)
return 100;
else
return 100 + antpower;
}
EXPORT_SYMBOL(rtl_query_rxpwrpercentage);
u8 rtl_evm_db_to_percentage(char value)
{
char ret_val;
ret_val = value;
if (ret_val >= 0)
ret_val = 0;
if (ret_val <= -33)
ret_val = -33;
ret_val = 0 - ret_val;
ret_val *= 3;
if (ret_val == 99)
ret_val = 100;
return ret_val;
}
EXPORT_SYMBOL(rtl_evm_db_to_percentage);
static long rtl_translate_todbm(struct ieee80211_hw *hw,
u8 signal_strength_index)
{
long signal_power;
signal_power = (long)((signal_strength_index + 1) >> 1);
signal_power -= 95;
return signal_power;
}
long rtl_signal_scale_mapping(struct ieee80211_hw *hw, long currsig)
{
long retsig;
if (currsig >= 61 && currsig <= 100)
retsig = 90 + ((currsig - 60) / 4);
else if (currsig >= 41 && currsig <= 60)
retsig = 78 + ((currsig - 40) / 2);
else if (currsig >= 31 && currsig <= 40)
retsig = 66 + (currsig - 30);
else if (currsig >= 21 && currsig <= 30)
retsig = 54 + (currsig - 20);
else if (currsig >= 5 && currsig <= 20)
retsig = 42 + (((currsig - 5) * 2) / 3);
else if (currsig == 4)
retsig = 36;
else if (currsig == 3)
retsig = 27;
else if (currsig == 2)
retsig = 18;
else if (currsig == 1)
retsig = 9;
else
retsig = currsig;
return retsig;
}
EXPORT_SYMBOL(rtl_signal_scale_mapping);
static void rtl_process_ui_rssi(struct ieee80211_hw *hw,
struct rtl_stats *pstatus)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_phy *rtlphy = &(rtlpriv->phy);
u8 rfpath;
u32 last_rssi, tmpval;
rtlpriv->stats.rssi_calculate_cnt++;
if (rtlpriv->stats.ui_rssi.total_num++ >= PHY_RSSI_SLID_WIN_MAX) {
rtlpriv->stats.ui_rssi.total_num = PHY_RSSI_SLID_WIN_MAX;
last_rssi = rtlpriv->stats.ui_rssi.elements[
rtlpriv->stats.ui_rssi.index];
rtlpriv->stats.ui_rssi.total_val -= last_rssi;
}
rtlpriv->stats.ui_rssi.total_val += pstatus->signalstrength;
rtlpriv->stats.ui_rssi.elements[rtlpriv->stats.ui_rssi.index++] =
pstatus->signalstrength;
if (rtlpriv->stats.ui_rssi.index >= PHY_RSSI_SLID_WIN_MAX)
rtlpriv->stats.ui_rssi.index = 0;
tmpval = rtlpriv->stats.ui_rssi.total_val /
rtlpriv->stats.ui_rssi.total_num;
rtlpriv->stats.signal_strength = rtl_translate_todbm(hw,
(u8) tmpval);
pstatus->rssi = rtlpriv->stats.signal_strength;
if (pstatus->is_cck)
return;
for (rfpath = RF90_PATH_A; rfpath < rtlphy->num_total_rfpath;
rfpath++) {
if (rtlpriv->stats.rx_rssi_percentage[rfpath] == 0) {
rtlpriv->stats.rx_rssi_percentage[rfpath] =
pstatus->rx_mimo_signalstrength[rfpath];
}
if (pstatus->rx_mimo_signalstrength[rfpath] >
rtlpriv->stats.rx_rssi_percentage[rfpath]) {
rtlpriv->stats.rx_rssi_percentage[rfpath] =
((rtlpriv->stats.rx_rssi_percentage[rfpath] *
(RX_SMOOTH_FACTOR - 1)) +
(pstatus->rx_mimo_signalstrength[rfpath])) /
(RX_SMOOTH_FACTOR);
rtlpriv->stats.rx_rssi_percentage[rfpath] =
rtlpriv->stats.rx_rssi_percentage[rfpath] + 1;
} else {
rtlpriv->stats.rx_rssi_percentage[rfpath] =
((rtlpriv->stats.rx_rssi_percentage[rfpath] *
(RX_SMOOTH_FACTOR - 1)) +
(pstatus->rx_mimo_signalstrength[rfpath])) /
(RX_SMOOTH_FACTOR);
}
}
}
static void rtl_update_rxsignalstatistics(struct ieee80211_hw *hw,
struct rtl_stats *pstatus)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
int weighting = 0;
if (rtlpriv->stats.recv_signal_power == 0)
rtlpriv->stats.recv_signal_power = pstatus->recvsignalpower;
if (pstatus->recvsignalpower > rtlpriv->stats.recv_signal_power)
weighting = 5;
else if (pstatus->recvsignalpower < rtlpriv->stats.recv_signal_power)
weighting = (-5);
rtlpriv->stats.recv_signal_power = (rtlpriv->stats.recv_signal_power *
5 + pstatus->recvsignalpower + weighting) / 6;
}
static void rtl_process_pwdb(struct ieee80211_hw *hw, struct rtl_stats *pstatus)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_sta_info *drv_priv = NULL;
struct ieee80211_sta *sta = NULL;
long undec_sm_pwdb;
rcu_read_lock();
if (rtlpriv->mac80211.opmode != NL80211_IFTYPE_STATION)
sta = rtl_find_sta(hw, pstatus->psaddr);
/* adhoc or ap mode */
if (sta) {
drv_priv = (struct rtl_sta_info *) sta->drv_priv;
undec_sm_pwdb = drv_priv->rssi_stat.undec_sm_pwdb;
} else {
undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
}
if (undec_sm_pwdb < 0)
undec_sm_pwdb = pstatus->rx_pwdb_all;
if (pstatus->rx_pwdb_all > (u32) undec_sm_pwdb) {
undec_sm_pwdb = (((undec_sm_pwdb) *
(RX_SMOOTH_FACTOR - 1)) +
(pstatus->rx_pwdb_all)) / (RX_SMOOTH_FACTOR);
undec_sm_pwdb = undec_sm_pwdb + 1;
} else {
undec_sm_pwdb = (((undec_sm_pwdb) * (RX_SMOOTH_FACTOR - 1)) +
(pstatus->rx_pwdb_all)) / (RX_SMOOTH_FACTOR);
}
if (sta) {
drv_priv->rssi_stat.undec_sm_pwdb = undec_sm_pwdb;
} else {
rtlpriv->dm.undec_sm_pwdb = undec_sm_pwdb;
}
rcu_read_unlock();
rtl_update_rxsignalstatistics(hw, pstatus);
}
static void rtl_process_ui_link_quality(struct ieee80211_hw *hw,
struct rtl_stats *pstatus)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 last_evm, n_stream, tmpval;
if (pstatus->signalquality == 0)
return;
if (rtlpriv->stats.ui_link_quality.total_num++ >=
PHY_LINKQUALITY_SLID_WIN_MAX) {
rtlpriv->stats.ui_link_quality.total_num =
PHY_LINKQUALITY_SLID_WIN_MAX;
last_evm = rtlpriv->stats.ui_link_quality.elements[
rtlpriv->stats.ui_link_quality.index];
rtlpriv->stats.ui_link_quality.total_val -= last_evm;
}
rtlpriv->stats.ui_link_quality.total_val += pstatus->signalquality;
rtlpriv->stats.ui_link_quality.elements[
rtlpriv->stats.ui_link_quality.index++] =
pstatus->signalquality;
if (rtlpriv->stats.ui_link_quality.index >=
PHY_LINKQUALITY_SLID_WIN_MAX)
rtlpriv->stats.ui_link_quality.index = 0;
tmpval = rtlpriv->stats.ui_link_quality.total_val /
rtlpriv->stats.ui_link_quality.total_num;
rtlpriv->stats.signal_quality = tmpval;
rtlpriv->stats.last_sigstrength_inpercent = tmpval;
for (n_stream = 0; n_stream < 2; n_stream++) {
if (pstatus->rx_mimo_sig_qual[n_stream] != -1) {
if (rtlpriv->stats.rx_evm_percentage[n_stream] == 0) {
rtlpriv->stats.rx_evm_percentage[n_stream] =
pstatus->rx_mimo_sig_qual[n_stream];
}
rtlpriv->stats.rx_evm_percentage[n_stream] =
((rtlpriv->stats.rx_evm_percentage[n_stream]
* (RX_SMOOTH_FACTOR - 1)) +
(pstatus->rx_mimo_sig_qual[n_stream] * 1)) /
(RX_SMOOTH_FACTOR);
}
}
}
void rtl_process_phyinfo(struct ieee80211_hw *hw, u8 *buffer,
struct rtl_stats *pstatus)
{
if (!pstatus->packet_matchbssid)
return;
rtl_process_ui_rssi(hw, pstatus);
rtl_process_pwdb(hw, pstatus);
rtl_process_ui_link_quality(hw, pstatus);
}
EXPORT_SYMBOL(rtl_process_phyinfo);
|
