1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2007 - 2011 Realtek Corporation. */
3
4 #include "../include/drv_types.h"
5
odm_query_rxpwrpercentage(s8 antpower)6 static u8 odm_query_rxpwrpercentage(s8 antpower)
7 {
8 if ((antpower <= -100) || (antpower >= 20))
9 return 0;
10 else if (antpower >= 0)
11 return 100;
12 else
13 return 100 + antpower;
14 }
15
odm_signal_scale_mapping(struct odm_dm_struct * dm_odm,s32 currsig)16 static s32 odm_signal_scale_mapping(struct odm_dm_struct *dm_odm, s32 currsig)
17 {
18 s32 retsig;
19
20 if (currsig >= 51 && currsig <= 100)
21 retsig = 100;
22 else if (currsig >= 41 && currsig <= 50)
23 retsig = 80 + ((currsig - 40) * 2);
24 else if (currsig >= 31 && currsig <= 40)
25 retsig = 66 + (currsig - 30);
26 else if (currsig >= 21 && currsig <= 30)
27 retsig = 54 + (currsig - 20);
28 else if (currsig >= 10 && currsig <= 20)
29 retsig = 42 + (((currsig - 10) * 2) / 3);
30 else if (currsig >= 5 && currsig <= 9)
31 retsig = 22 + (((currsig - 5) * 3) / 2);
32 else if (currsig >= 1 && currsig <= 4)
33 retsig = 6 + (((currsig - 1) * 3) / 2);
34 else
35 retsig = currsig;
36
37 return retsig;
38 }
39
odm_evm_db_to_percentage(s8 value)40 static u8 odm_evm_db_to_percentage(s8 value)
41 {
42 /* -33dB~0dB to 0%~99% */
43 s8 ret_val = clamp(-value, 0, 33) * 3;
44
45 if (ret_val == 99)
46 ret_val = 100;
47
48 return ret_val;
49 }
50
odm_RxPhyStatus92CSeries_Parsing(struct odm_dm_struct * dm_odm,struct phy_info * pPhyInfo,u8 * pPhyStatus,struct odm_per_pkt_info * pPktinfo,struct adapter * adapt)51 static void odm_RxPhyStatus92CSeries_Parsing(struct odm_dm_struct *dm_odm,
52 struct phy_info *pPhyInfo,
53 u8 *pPhyStatus,
54 struct odm_per_pkt_info *pPktinfo,
55 struct adapter *adapt)
56 {
57 u8 i, Max_spatial_stream;
58 s8 rx_pwr[4], rx_pwr_all = 0;
59 u8 EVM, PWDB_ALL = 0;
60 u8 RSSI, total_rssi = 0;
61 u8 isCCKrate = 0;
62 u8 rf_rx_num = 0;
63 u8 cck_highpwr = 0;
64 u8 LNA_idx, VGA_idx;
65
66 struct phy_status_rpt *pPhyStaRpt = (struct phy_status_rpt *)pPhyStatus;
67
68 isCCKrate = pPktinfo->Rate >= DESC92C_RATE1M && pPktinfo->Rate <= DESC92C_RATE11M;
69
70 if (isCCKrate) {
71 u8 cck_agc_rpt;
72
73 /* (1)Hardware does not provide RSSI for CCK */
74 /* (2)PWDB, Average PWDB calculated by hardware (for rate adaptive) */
75
76 cck_highpwr = dm_odm->bCckHighPower;
77
78 cck_agc_rpt = pPhyStaRpt->cck_agc_rpt_ofdm_cfosho_a;
79
80 /* 2011.11.28 LukeLee: 88E use different LNA & VGA gain table */
81 /* The RSSI formula should be modified according to the gain table */
82 /* In 88E, cck_highpwr is always set to 1 */
83 LNA_idx = ((cck_agc_rpt & 0xE0) >> 5);
84 VGA_idx = (cck_agc_rpt & 0x1F);
85 switch (LNA_idx) {
86 case 7:
87 if (VGA_idx <= 27)
88 rx_pwr_all = -100 + 2 * (27 - VGA_idx); /* VGA_idx = 27~2 */
89 else
90 rx_pwr_all = -100;
91 break;
92 case 6:
93 rx_pwr_all = -48 + 2 * (2 - VGA_idx); /* VGA_idx = 2~0 */
94 break;
95 case 5:
96 rx_pwr_all = -42 + 2 * (7 - VGA_idx); /* VGA_idx = 7~5 */
97 break;
98 case 4:
99 rx_pwr_all = -36 + 2 * (7 - VGA_idx); /* VGA_idx = 7~4 */
100 break;
101 case 3:
102 rx_pwr_all = -24 + 2 * (7 - VGA_idx); /* VGA_idx = 7~0 */
103 break;
104 case 2:
105 if (cck_highpwr)
106 rx_pwr_all = -12 + 2 * (5 - VGA_idx); /* VGA_idx = 5~0 */
107 else
108 rx_pwr_all = -6 + 2 * (5 - VGA_idx);
109 break;
110 case 1:
111 rx_pwr_all = 8 - 2 * VGA_idx;
112 break;
113 case 0:
114 rx_pwr_all = 14 - 2 * VGA_idx;
115 break;
116 default:
117 break;
118 }
119 rx_pwr_all += 6;
120 PWDB_ALL = odm_query_rxpwrpercentage(rx_pwr_all);
121 if (!cck_highpwr) {
122 if (PWDB_ALL >= 80)
123 PWDB_ALL = ((PWDB_ALL - 80) << 1) + ((PWDB_ALL - 80) >> 1) + 80;
124 else if ((PWDB_ALL <= 78) && (PWDB_ALL >= 20))
125 PWDB_ALL += 3;
126 if (PWDB_ALL > 100)
127 PWDB_ALL = 100;
128 }
129
130 pPhyInfo->RxPWDBAll = PWDB_ALL;
131 pPhyInfo->recvpower = rx_pwr_all;
132 /* (3) Get Signal Quality (EVM) */
133 if (pPktinfo->bPacketMatchBSSID) {
134 u8 SQ, SQ_rpt;
135
136 if (pPhyInfo->RxPWDBAll > 40) {
137 SQ = 100;
138 } else {
139 SQ_rpt = pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all;
140
141 if (SQ_rpt > 64)
142 SQ = 0;
143 else if (SQ_rpt < 20)
144 SQ = 100;
145 else
146 SQ = ((64 - SQ_rpt) * 100) / 44;
147 }
148 pPhyInfo->SignalQuality = SQ;
149 }
150 } else { /* is OFDM rate */
151 /* (1)Get RSSI for HT rate */
152
153 for (i = RF_PATH_A; i < RF_PATH_MAX; i++) {
154 /* 2008/01/30 MH we will judge RF RX path now. */
155 if (dm_odm->RFPathRxEnable & BIT(i))
156 rf_rx_num++;
157
158 rx_pwr[i] = ((pPhyStaRpt->path_agc[i].gain & 0x3F) * 2) - 110;
159 if (i == RF_PATH_A)
160 adapt->signal_strength = rx_pwr[i];
161
162 pPhyInfo->RxPwr[i] = rx_pwr[i];
163
164 /* Translate DBM to percentage. */
165 RSSI = odm_query_rxpwrpercentage(rx_pwr[i]);
166 total_rssi += RSSI;
167
168 pPhyInfo->RxMIMOSignalStrength[i] = (u8)RSSI;
169
170 /* Get Rx snr value in DB */
171 dm_odm->PhyDbgInfo.RxSNRdB[i] = (s32)(pPhyStaRpt->path_rxsnr[i] / 2);
172 }
173 /* (2)PWDB, Average PWDB calculated by hardware (for rate adaptive) */
174 rx_pwr_all = (((pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all) >> 1) & 0x7f) - 110;
175
176 PWDB_ALL = odm_query_rxpwrpercentage(rx_pwr_all);
177
178 pPhyInfo->RxPWDBAll = PWDB_ALL;
179 pPhyInfo->RxPower = rx_pwr_all;
180 pPhyInfo->recvpower = rx_pwr_all;
181
182 /* (3)EVM of HT rate */
183 if (pPktinfo->Rate >= DESC92C_RATEMCS8 && pPktinfo->Rate <= DESC92C_RATEMCS15)
184 Max_spatial_stream = 2; /* both spatial stream make sense */
185 else
186 Max_spatial_stream = 1; /* only spatial stream 1 makes sense */
187
188 for (i = 0; i < Max_spatial_stream; i++) {
189 /* Do not use shift operation like "rx_evmX >>= 1" because the compilor of free build environment */
190 /* fill most significant bit to "zero" when doing shifting operation which may change a negative */
191 /* value to positive one, then the dbm value (which is supposed to be negative) is not correct anymore. */
192 EVM = odm_evm_db_to_percentage((pPhyStaRpt->stream_rxevm[i])); /* dbm */
193
194 if (pPktinfo->bPacketMatchBSSID) {
195 if (i == RF_PATH_A) /* Fill value in RFD, Get the first spatial stream only */
196 pPhyInfo->SignalQuality = (u8)(EVM & 0xff);
197 }
198 }
199 }
200 /* UI BSS List signal strength(in percentage), make it good looking, from 0~100. */
201 /* It is assigned to the BSS List in GetValueFromBeaconOrProbeRsp(). */
202 if (isCCKrate) {
203 pPhyInfo->SignalStrength = (u8)(odm_signal_scale_mapping(dm_odm, PWDB_ALL));/* PWDB_ALL; */
204 } else {
205 if (rf_rx_num != 0)
206 pPhyInfo->SignalStrength = (u8)(odm_signal_scale_mapping(dm_odm, total_rssi /= rf_rx_num));
207 }
208
209 /* For 88E HW Antenna Diversity */
210 dm_odm->DM_FatTable.antsel_rx_keep_0 = pPhyStaRpt->ant_sel;
211 dm_odm->DM_FatTable.antsel_rx_keep_1 = pPhyStaRpt->ant_sel_b;
212 dm_odm->DM_FatTable.antsel_rx_keep_2 = pPhyStaRpt->antsel_rx_keep_2;
213 }
214
odm_Process_RSSIForDM(struct odm_dm_struct * dm_odm,struct phy_info * pPhyInfo,struct odm_per_pkt_info * pPktinfo)215 static void odm_Process_RSSIForDM(struct odm_dm_struct *dm_odm,
216 struct phy_info *pPhyInfo,
217 struct odm_per_pkt_info *pPktinfo)
218 {
219 s32 UndecoratedSmoothedPWDB, UndecoratedSmoothedCCK;
220 s32 UndecoratedSmoothedOFDM, RSSI_Ave;
221 u8 isCCKrate = 0;
222 u8 RSSI_max, RSSI_min, i;
223 u32 OFDM_pkt = 0;
224 u32 Weighting = 0;
225 struct sta_info *pEntry;
226 u8 antsel_tr_mux;
227 struct fast_ant_train *pDM_FatTable = &dm_odm->DM_FatTable;
228
229 if (pPktinfo->StationID == 0xFF)
230 return;
231 pEntry = dm_odm->pODM_StaInfo[pPktinfo->StationID];
232 if (!IS_STA_VALID(pEntry))
233 return;
234 if ((!pPktinfo->bPacketMatchBSSID))
235 return;
236
237 isCCKrate = pPktinfo->Rate >= DESC92C_RATE1M && pPktinfo->Rate <= DESC92C_RATE11M;
238
239 /* Smart Antenna Debug Message------------------ */
240 if ((dm_odm->AntDivType == CG_TRX_HW_ANTDIV) || (dm_odm->AntDivType == CGCS_RX_HW_ANTDIV)) {
241 if (pPktinfo->bPacketToSelf || pPktinfo->bPacketBeacon) {
242 antsel_tr_mux = (pDM_FatTable->antsel_rx_keep_2 << 2) |
243 (pDM_FatTable->antsel_rx_keep_1 << 1) | pDM_FatTable->antsel_rx_keep_0;
244 ODM_AntselStatistics_88E(dm_odm, antsel_tr_mux, pPktinfo->StationID, pPhyInfo->RxPWDBAll);
245 }
246 }
247
248 /* Smart Antenna Debug Message------------------ */
249
250 UndecoratedSmoothedCCK = pEntry->rssi_stat.UndecoratedSmoothedCCK;
251 UndecoratedSmoothedOFDM = pEntry->rssi_stat.UndecoratedSmoothedOFDM;
252 UndecoratedSmoothedPWDB = pEntry->rssi_stat.UndecoratedSmoothedPWDB;
253
254 if (pPktinfo->bPacketToSelf || pPktinfo->bPacketBeacon) {
255 if (!isCCKrate) { /* ofdm rate */
256 if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_B] == 0) {
257 RSSI_Ave = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
258 } else {
259 if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_A] > pPhyInfo->RxMIMOSignalStrength[RF_PATH_B]) {
260 RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
261 RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
262 } else {
263 RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
264 RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
265 }
266 if ((RSSI_max - RSSI_min) < 3)
267 RSSI_Ave = RSSI_max;
268 else if ((RSSI_max - RSSI_min) < 6)
269 RSSI_Ave = RSSI_max - 1;
270 else if ((RSSI_max - RSSI_min) < 10)
271 RSSI_Ave = RSSI_max - 2;
272 else
273 RSSI_Ave = RSSI_max - 3;
274 }
275
276 /* 1 Process OFDM RSSI */
277 if (UndecoratedSmoothedOFDM <= 0) { /* initialize */
278 UndecoratedSmoothedOFDM = pPhyInfo->RxPWDBAll;
279 } else {
280 if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedOFDM) {
281 UndecoratedSmoothedOFDM =
282 (((UndecoratedSmoothedOFDM) * (Rx_Smooth_Factor - 1)) +
283 (RSSI_Ave)) / (Rx_Smooth_Factor);
284 UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM + 1;
285 } else {
286 UndecoratedSmoothedOFDM =
287 (((UndecoratedSmoothedOFDM) * (Rx_Smooth_Factor - 1)) +
288 (RSSI_Ave)) / (Rx_Smooth_Factor);
289 }
290 }
291
292 pEntry->rssi_stat.PacketMap = (pEntry->rssi_stat.PacketMap << 1) | BIT(0);
293
294 } else {
295 RSSI_Ave = pPhyInfo->RxPWDBAll;
296
297 /* 1 Process CCK RSSI */
298 if (UndecoratedSmoothedCCK <= 0) { /* initialize */
299 UndecoratedSmoothedCCK = pPhyInfo->RxPWDBAll;
300 } else {
301 if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedCCK) {
302 UndecoratedSmoothedCCK =
303 ((UndecoratedSmoothedCCK * (Rx_Smooth_Factor - 1)) +
304 pPhyInfo->RxPWDBAll) / Rx_Smooth_Factor;
305 UndecoratedSmoothedCCK = UndecoratedSmoothedCCK + 1;
306 } else {
307 UndecoratedSmoothedCCK =
308 ((UndecoratedSmoothedCCK * (Rx_Smooth_Factor - 1)) +
309 pPhyInfo->RxPWDBAll) / Rx_Smooth_Factor;
310 }
311 }
312 pEntry->rssi_stat.PacketMap = pEntry->rssi_stat.PacketMap << 1;
313 }
314 /* 2011.07.28 LukeLee: modified to prevent unstable CCK RSSI */
315 if (pEntry->rssi_stat.ValidBit >= 64)
316 pEntry->rssi_stat.ValidBit = 64;
317 else
318 pEntry->rssi_stat.ValidBit++;
319
320 for (i = 0; i < pEntry->rssi_stat.ValidBit; i++)
321 OFDM_pkt += (u8)(pEntry->rssi_stat.PacketMap >> i) & BIT(0);
322
323 if (pEntry->rssi_stat.ValidBit == 64) {
324 Weighting = ((OFDM_pkt << 4) > 64) ? 64 : (OFDM_pkt << 4);
325 UndecoratedSmoothedPWDB = (Weighting * UndecoratedSmoothedOFDM + (64 - Weighting) * UndecoratedSmoothedCCK) >> 6;
326 } else {
327 if (pEntry->rssi_stat.ValidBit != 0)
328 UndecoratedSmoothedPWDB = (OFDM_pkt * UndecoratedSmoothedOFDM +
329 (pEntry->rssi_stat.ValidBit - OFDM_pkt) *
330 UndecoratedSmoothedCCK) / pEntry->rssi_stat.ValidBit;
331 else
332 UndecoratedSmoothedPWDB = 0;
333 }
334 pEntry->rssi_stat.UndecoratedSmoothedCCK = UndecoratedSmoothedCCK;
335 pEntry->rssi_stat.UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM;
336 pEntry->rssi_stat.UndecoratedSmoothedPWDB = UndecoratedSmoothedPWDB;
337 }
338 }
339
340 /* Endianness before calling this API */
ODM_PhyStatusQuery(struct odm_dm_struct * dm_odm,struct phy_info * pPhyInfo,u8 * pPhyStatus,struct odm_per_pkt_info * pPktinfo,struct adapter * adapt)341 void ODM_PhyStatusQuery(struct odm_dm_struct *dm_odm,
342 struct phy_info *pPhyInfo,
343 u8 *pPhyStatus,
344 struct odm_per_pkt_info *pPktinfo,
345 struct adapter *adapt)
346 {
347 odm_RxPhyStatus92CSeries_Parsing(dm_odm, pPhyInfo, pPhyStatus, pPktinfo, adapt);
348 odm_Process_RSSIForDM(dm_odm, pPhyInfo, pPktinfo);
349 }
350