1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* Copyright(c) 2009-2012 Realtek Corporation.*/ |
3 | |
4 | #include "wifi.h" |
5 | #include "stats.h" |
6 | #include <linux/export.h> |
7 | |
8 | u8 rtl_query_rxpwrpercentage(s8 antpower) |
9 | { |
10 | if ((antpower <= -100) || (antpower >= 20)) |
11 | return 0; |
12 | else if (antpower >= 0) |
13 | return 100; |
14 | else |
15 | return 100 + antpower; |
16 | } |
17 | EXPORT_SYMBOL(rtl_query_rxpwrpercentage); |
18 | |
19 | u8 rtl_evm_db_to_percentage(s8 value) |
20 | { |
21 | s8 ret_val = clamp(-value, 0, 33) * 3; |
22 | |
23 | if (ret_val == 99) |
24 | ret_val = 100; |
25 | |
26 | return ret_val; |
27 | } |
28 | EXPORT_SYMBOL(rtl_evm_db_to_percentage); |
29 | |
30 | static long rtl_translate_todbm(struct ieee80211_hw *hw, |
31 | u8 signal_strength_index) |
32 | { |
33 | long signal_power; |
34 | |
35 | signal_power = (long)((signal_strength_index + 1) >> 1); |
36 | signal_power -= 95; |
37 | return signal_power; |
38 | } |
39 | |
40 | long rtl_signal_scale_mapping(struct ieee80211_hw *hw, long currsig) |
41 | { |
42 | long retsig; |
43 | |
44 | if (currsig >= 61 && currsig <= 100) |
45 | retsig = 90 + ((currsig - 60) / 4); |
46 | else if (currsig >= 41 && currsig <= 60) |
47 | retsig = 78 + ((currsig - 40) / 2); |
48 | else if (currsig >= 31 && currsig <= 40) |
49 | retsig = 66 + (currsig - 30); |
50 | else if (currsig >= 21 && currsig <= 30) |
51 | retsig = 54 + (currsig - 20); |
52 | else if (currsig >= 5 && currsig <= 20) |
53 | retsig = 42 + (((currsig - 5) * 2) / 3); |
54 | else if (currsig == 4) |
55 | retsig = 36; |
56 | else if (currsig == 3) |
57 | retsig = 27; |
58 | else if (currsig == 2) |
59 | retsig = 18; |
60 | else if (currsig == 1) |
61 | retsig = 9; |
62 | else |
63 | retsig = currsig; |
64 | |
65 | return retsig; |
66 | } |
67 | EXPORT_SYMBOL(rtl_signal_scale_mapping); |
68 | |
69 | static void (struct ieee80211_hw *hw, |
70 | struct rtl_stats *pstatus) |
71 | { |
72 | struct rtl_priv *rtlpriv = rtl_priv(hw); |
73 | struct rtl_phy *rtlphy = &(rtlpriv->phy); |
74 | u8 rfpath; |
75 | u32 , tmpval; |
76 | |
77 | if (!pstatus->packet_toself && !pstatus->packet_beacon) |
78 | return; |
79 | |
80 | rtlpriv->stats.pwdb_all_cnt += pstatus->rx_pwdb_all; |
81 | rtlpriv->stats.rssi_calculate_cnt++; |
82 | |
83 | if (rtlpriv->stats.ui_rssi.total_num++ >= PHY_RSSI_SLID_WIN_MAX) { |
84 | rtlpriv->stats.ui_rssi.total_num = PHY_RSSI_SLID_WIN_MAX; |
85 | last_rssi = rtlpriv->stats.ui_rssi.elements[ |
86 | rtlpriv->stats.ui_rssi.index]; |
87 | rtlpriv->stats.ui_rssi.total_val -= last_rssi; |
88 | } |
89 | rtlpriv->stats.ui_rssi.total_val += pstatus->signalstrength; |
90 | rtlpriv->stats.ui_rssi.elements[rtlpriv->stats.ui_rssi.index++] = |
91 | pstatus->signalstrength; |
92 | if (rtlpriv->stats.ui_rssi.index >= PHY_RSSI_SLID_WIN_MAX) |
93 | rtlpriv->stats.ui_rssi.index = 0; |
94 | tmpval = rtlpriv->stats.ui_rssi.total_val / |
95 | rtlpriv->stats.ui_rssi.total_num; |
96 | rtlpriv->stats.signal_strength = rtl_translate_todbm(hw, |
97 | signal_strength_index: (u8) tmpval); |
98 | pstatus->rssi = rtlpriv->stats.signal_strength; |
99 | |
100 | if (pstatus->is_cck) |
101 | return; |
102 | |
103 | for (rfpath = RF90_PATH_A; rfpath < rtlphy->num_total_rfpath; |
104 | rfpath++) { |
105 | if (rtlpriv->stats.rx_rssi_percentage[rfpath] == 0) { |
106 | rtlpriv->stats.rx_rssi_percentage[rfpath] = |
107 | pstatus->rx_mimo_signalstrength[rfpath]; |
108 | |
109 | } |
110 | if (pstatus->rx_mimo_signalstrength[rfpath] > |
111 | rtlpriv->stats.rx_rssi_percentage[rfpath]) { |
112 | rtlpriv->stats.rx_rssi_percentage[rfpath] = |
113 | ((rtlpriv->stats.rx_rssi_percentage[rfpath] * |
114 | (RX_SMOOTH_FACTOR - 1)) + |
115 | (pstatus->rx_mimo_signalstrength[rfpath])) / |
116 | (RX_SMOOTH_FACTOR); |
117 | rtlpriv->stats.rx_rssi_percentage[rfpath] = |
118 | rtlpriv->stats.rx_rssi_percentage[rfpath] + 1; |
119 | } else { |
120 | rtlpriv->stats.rx_rssi_percentage[rfpath] = |
121 | ((rtlpriv->stats.rx_rssi_percentage[rfpath] * |
122 | (RX_SMOOTH_FACTOR - 1)) + |
123 | (pstatus->rx_mimo_signalstrength[rfpath])) / |
124 | (RX_SMOOTH_FACTOR); |
125 | } |
126 | rtlpriv->stats.rx_snr_db[rfpath] = pstatus->rx_snr[rfpath]; |
127 | rtlpriv->stats.rx_evm_dbm[rfpath] = |
128 | pstatus->rx_mimo_evm_dbm[rfpath]; |
129 | rtlpriv->stats.rx_cfo_short[rfpath] = |
130 | pstatus->cfo_short[rfpath]; |
131 | rtlpriv->stats.rx_cfo_tail[rfpath] = pstatus->cfo_tail[rfpath]; |
132 | } |
133 | } |
134 | |
135 | static void rtl_update_rxsignalstatistics(struct ieee80211_hw *hw, |
136 | struct rtl_stats *pstatus) |
137 | { |
138 | struct rtl_priv *rtlpriv = rtl_priv(hw); |
139 | int weighting = 0; |
140 | |
141 | if (rtlpriv->stats.recv_signal_power == 0) |
142 | rtlpriv->stats.recv_signal_power = pstatus->recvsignalpower; |
143 | if (pstatus->recvsignalpower > rtlpriv->stats.recv_signal_power) |
144 | weighting = 5; |
145 | else if (pstatus->recvsignalpower < rtlpriv->stats.recv_signal_power) |
146 | weighting = (-5); |
147 | rtlpriv->stats.recv_signal_power = (rtlpriv->stats.recv_signal_power * |
148 | 5 + pstatus->recvsignalpower + weighting) / 6; |
149 | } |
150 | |
151 | static void rtl_process_pwdb(struct ieee80211_hw *hw, struct rtl_stats *pstatus) |
152 | { |
153 | struct rtl_priv *rtlpriv = rtl_priv(hw); |
154 | struct rtl_sta_info *drv_priv = NULL; |
155 | struct ieee80211_sta *sta = NULL; |
156 | long undec_sm_pwdb; |
157 | |
158 | rcu_read_lock(); |
159 | if (rtlpriv->mac80211.opmode != NL80211_IFTYPE_STATION) |
160 | sta = rtl_find_sta(hw, mac_addr: pstatus->psaddr); |
161 | |
162 | /* adhoc or ap mode */ |
163 | if (sta) { |
164 | drv_priv = (struct rtl_sta_info *) sta->drv_priv; |
165 | undec_sm_pwdb = drv_priv->rssi_stat.undec_sm_pwdb; |
166 | } else { |
167 | undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb; |
168 | } |
169 | |
170 | if (undec_sm_pwdb < 0) |
171 | undec_sm_pwdb = pstatus->rx_pwdb_all; |
172 | if (pstatus->rx_pwdb_all > (u32) undec_sm_pwdb) { |
173 | undec_sm_pwdb = (((undec_sm_pwdb) * |
174 | (RX_SMOOTH_FACTOR - 1)) + |
175 | (pstatus->rx_pwdb_all)) / (RX_SMOOTH_FACTOR); |
176 | undec_sm_pwdb = undec_sm_pwdb + 1; |
177 | } else { |
178 | undec_sm_pwdb = (((undec_sm_pwdb) * |
179 | (RX_SMOOTH_FACTOR - 1)) + |
180 | (pstatus->rx_pwdb_all)) / (RX_SMOOTH_FACTOR); |
181 | } |
182 | |
183 | if (sta) { |
184 | drv_priv->rssi_stat.undec_sm_pwdb = undec_sm_pwdb; |
185 | } else { |
186 | rtlpriv->dm.undec_sm_pwdb = undec_sm_pwdb; |
187 | } |
188 | rcu_read_unlock(); |
189 | |
190 | rtl_update_rxsignalstatistics(hw, pstatus); |
191 | } |
192 | |
193 | static void rtl_process_ui_link_quality(struct ieee80211_hw *hw, |
194 | struct rtl_stats *pstatus) |
195 | { |
196 | struct rtl_priv *rtlpriv = rtl_priv(hw); |
197 | u32 last_evm, n_stream, tmpval; |
198 | |
199 | if (pstatus->signalquality == 0) |
200 | return; |
201 | |
202 | if (rtlpriv->stats.ui_link_quality.total_num++ >= |
203 | PHY_LINKQUALITY_SLID_WIN_MAX) { |
204 | rtlpriv->stats.ui_link_quality.total_num = |
205 | PHY_LINKQUALITY_SLID_WIN_MAX; |
206 | last_evm = rtlpriv->stats.ui_link_quality.elements[ |
207 | rtlpriv->stats.ui_link_quality.index]; |
208 | rtlpriv->stats.ui_link_quality.total_val -= last_evm; |
209 | } |
210 | rtlpriv->stats.ui_link_quality.total_val += pstatus->signalquality; |
211 | rtlpriv->stats.ui_link_quality.elements[ |
212 | rtlpriv->stats.ui_link_quality.index++] = |
213 | pstatus->signalquality; |
214 | if (rtlpriv->stats.ui_link_quality.index >= |
215 | PHY_LINKQUALITY_SLID_WIN_MAX) |
216 | rtlpriv->stats.ui_link_quality.index = 0; |
217 | tmpval = rtlpriv->stats.ui_link_quality.total_val / |
218 | rtlpriv->stats.ui_link_quality.total_num; |
219 | rtlpriv->stats.signal_quality = tmpval; |
220 | rtlpriv->stats.last_sigstrength_inpercent = tmpval; |
221 | for (n_stream = 0; n_stream < 2; n_stream++) { |
222 | if (pstatus->rx_mimo_sig_qual[n_stream] != -1) { |
223 | if (rtlpriv->stats.rx_evm_percentage[n_stream] == 0) { |
224 | rtlpriv->stats.rx_evm_percentage[n_stream] = |
225 | pstatus->rx_mimo_sig_qual[n_stream]; |
226 | } |
227 | rtlpriv->stats.rx_evm_percentage[n_stream] = |
228 | ((rtlpriv->stats.rx_evm_percentage[n_stream] |
229 | * (RX_SMOOTH_FACTOR - 1)) + |
230 | (pstatus->rx_mimo_sig_qual[n_stream] * 1)) / |
231 | (RX_SMOOTH_FACTOR); |
232 | } |
233 | } |
234 | } |
235 | |
236 | void rtl_process_phyinfo(struct ieee80211_hw *hw, u8 *buffer, |
237 | struct rtl_stats *pstatus) |
238 | { |
239 | |
240 | if (!pstatus->packet_matchbssid) |
241 | return; |
242 | |
243 | rtl_process_ui_rssi(hw, pstatus); |
244 | rtl_process_pwdb(hw, pstatus); |
245 | rtl_process_ui_link_quality(hw, pstatus); |
246 | } |
247 | EXPORT_SYMBOL(rtl_process_phyinfo); |
248 | |