1 /******************************************************************************
2 *
3 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 ******************************************************************************/
15
16 /* */
17 /* include files */
18 /* */
19
20 #include "odm_precomp.h"
21
odm_QueryRxPwrPercentage(s8 AntPower)22 static u8 odm_QueryRxPwrPercentage(s8 AntPower)
23 {
24 if ((AntPower <= -100) || (AntPower >= 20))
25 return 0;
26 else if (AntPower >= 0)
27 return 100;
28 else
29 return 100 + AntPower;
30 }
31
odm_SignalScaleMapping_92CSeries(struct dm_odm_t * pDM_Odm,s32 CurrSig)32 static s32 odm_SignalScaleMapping_92CSeries(struct dm_odm_t *pDM_Odm, s32 CurrSig)
33 {
34 s32 RetSig = 0;
35
36 if (CurrSig >= 51 && CurrSig <= 100)
37 RetSig = 100;
38 else if (CurrSig >= 41 && CurrSig <= 50)
39 RetSig = 80 + ((CurrSig - 40)*2);
40 else if (CurrSig >= 31 && CurrSig <= 40)
41 RetSig = 66 + (CurrSig - 30);
42 else if (CurrSig >= 21 && CurrSig <= 30)
43 RetSig = 54 + (CurrSig - 20);
44 else if (CurrSig >= 10 && CurrSig <= 20)
45 RetSig = 42 + (((CurrSig - 10) * 2) / 3);
46 else if (CurrSig >= 5 && CurrSig <= 9)
47 RetSig = 22 + (((CurrSig - 5) * 3) / 2);
48 else if (CurrSig >= 1 && CurrSig <= 4)
49 RetSig = 6 + (((CurrSig - 1) * 3) / 2);
50 else
51 RetSig = CurrSig;
52
53 return RetSig;
54 }
55
odm_SignalScaleMapping(struct dm_odm_t * pDM_Odm,s32 CurrSig)56 static s32 odm_SignalScaleMapping(struct dm_odm_t *pDM_Odm, s32 CurrSig)
57 {
58 return odm_SignalScaleMapping_92CSeries(pDM_Odm, CurrSig);
59 }
60
61 static u8
odm_EVMdbToPercentage(s8 Value)62 odm_EVMdbToPercentage(
63 s8 Value
64 )
65 {
66 /* */
67 /* -33dB~0dB to 0%~99% */
68 /* */
69 s8 ret_val;
70
71 ret_val = Value;
72
73 if (ret_val >= 0)
74 ret_val = 0;
75 if (ret_val <= -33)
76 ret_val = -33;
77
78 ret_val = 0 - ret_val;
79 ret_val *= 3;
80
81 if (ret_val == 99)
82 ret_val = 100;
83
84 return ret_val;
85 }
86
odm_RxPhyStatus92CSeries_Parsing(struct dm_odm_t * pDM_Odm,struct phy_info * pPhyInfo,u8 * pPhyStatus,struct odm_packet_info * pPktinfo)87 static void odm_RxPhyStatus92CSeries_Parsing(struct dm_odm_t *pDM_Odm,
88 struct phy_info *pPhyInfo,
89 u8 *pPhyStatus,
90 struct odm_packet_info *pPktinfo)
91 {
92 struct phy_status_rpt *pPhyStaRpt = (struct phy_status_rpt *)pPhyStatus;
93 u8 i, Max_spatial_stream;
94 s8 rx_pwr[4], rx_pwr_all = 0;
95 u8 EVM, PWDB_ALL = 0, PWDB_ALL_BT;
96 u8 RSSI, total_rssi = 0;
97 u8 isCCKrate = 0;
98 u8 rf_rx_num = 0;
99 u8 cck_highpwr = 0;
100
101 isCCKrate = (pPktinfo->Rate <= DESC92C_RATE11M) ? true : false;
102 pPhyInfo->RxMIMOSignalQuality[RF_PATH_A] = -1;
103 pPhyInfo->RxMIMOSignalQuality[RF_PATH_B] = -1;
104
105 if (isCCKrate) {
106 u8 report;
107 u8 cck_agc_rpt;
108
109 pDM_Odm->PhyDbgInfo.NumQryPhyStatusCCK++;
110 /* (1)Hardware does not provide RSSI for CCK */
111 /* (2)PWDB, Average PWDB cacluated by hardware (for rate adaptive) */
112
113 cck_highpwr = pDM_Odm->bCckHighPower;
114
115 cck_agc_rpt = pPhyStaRpt->cck_agc_rpt_ofdm_cfosho_a;
116
117 /* The RSSI formula should be modified according to the gain table */
118 if (!cck_highpwr) {
119 report = (cck_agc_rpt & 0xc0)>>6;
120 switch (report) {
121 /* Modify the RF RNA gain value to -40, -20, -2, 14 by Jenyu's suggestion */
122 /* Note: different RF with the different RNA gain. */
123 case 0x3:
124 rx_pwr_all = -46 - (cck_agc_rpt & 0x3e);
125 break;
126 case 0x2:
127 rx_pwr_all = -26 - (cck_agc_rpt & 0x3e);
128 break;
129 case 0x1:
130 rx_pwr_all = -12 - (cck_agc_rpt & 0x3e);
131 break;
132 case 0x0:
133 rx_pwr_all = 16 - (cck_agc_rpt & 0x3e);
134 break;
135 }
136 } else {
137 report = (cck_agc_rpt & 0x60)>>5;
138 switch (report) {
139 case 0x3:
140 rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f)<<1);
141 break;
142 case 0x2:
143 rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f)<<1);
144 break;
145 case 0x1:
146 rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f)<<1);
147 break;
148 case 0x0:
149 rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f)<<1);
150 break;
151 }
152 }
153
154 PWDB_ALL = odm_QueryRxPwrPercentage(rx_pwr_all);
155
156 /* Modification for ext-LNA board */
157 if (pDM_Odm->BoardType == ODM_BOARD_HIGHPWR) {
158 if ((cck_agc_rpt>>7) == 0) {
159 PWDB_ALL = (PWDB_ALL > 94) ? 100 : (PWDB_ALL+6);
160 } else {
161 if (PWDB_ALL > 38)
162 PWDB_ALL -= 16;
163 else
164 PWDB_ALL = (PWDB_ALL <= 16) ? (PWDB_ALL>>2) : (PWDB_ALL-12);
165 }
166
167 /* CCK modification */
168 if (PWDB_ALL > 25 && PWDB_ALL <= 60)
169 PWDB_ALL += 6;
170 } else { /* Modification for int-LNA board */
171 if (PWDB_ALL > 99)
172 PWDB_ALL -= 8;
173 else if (PWDB_ALL > 50 && PWDB_ALL <= 68)
174 PWDB_ALL += 4;
175 }
176 pPhyInfo->RxPWDBAll = PWDB_ALL;
177 pPhyInfo->BTRxRSSIPercentage = PWDB_ALL;
178 pPhyInfo->RecvSignalPower = rx_pwr_all;
179 /* (3) Get Signal Quality (EVM) */
180 if (pPktinfo->bPacketMatchBSSID) {
181 u8 SQ, SQ_rpt;
182
183 SQ_rpt = pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all;
184
185 if (SQ_rpt > 64)
186 SQ = 0;
187 else if (SQ_rpt < 20)
188 SQ = 100;
189 else
190 SQ = ((64-SQ_rpt) * 100) / 44;
191
192 pPhyInfo->SignalQuality = SQ;
193 pPhyInfo->RxMIMOSignalQuality[RF_PATH_A] = SQ;
194 pPhyInfo->RxMIMOSignalQuality[RF_PATH_B] = -1;
195 }
196 } else { /* is OFDM rate */
197 pDM_Odm->PhyDbgInfo.NumQryPhyStatusOFDM++;
198
199 /* (1)Get RSSI for HT rate */
200
201 for (i = RF_PATH_A; i < RF_PATH_MAX; i++) {
202 /* 2008/01/30 MH we will judge RF RX path now. */
203 if (pDM_Odm->RFPathRxEnable & BIT(i))
204 rf_rx_num++;
205
206 rx_pwr[i] = ((pPhyStaRpt->path_agc[i].gain & 0x3F)*2) - 110;
207
208 pPhyInfo->RxPwr[i] = rx_pwr[i];
209
210 /* Translate DBM to percentage. */
211 RSSI = odm_QueryRxPwrPercentage(rx_pwr[i]);
212 total_rssi += RSSI;
213
214 /* Modification for ext-LNA board */
215 if (pDM_Odm->BoardType == ODM_BOARD_HIGHPWR) {
216 if ((pPhyStaRpt->path_agc[i].trsw) == 1)
217 RSSI = (RSSI > 94) ? 100 : (RSSI+6);
218 else
219 RSSI = (RSSI <= 16) ? (RSSI>>3) : (RSSI-16);
220
221 if ((RSSI <= 34) && (RSSI >= 4))
222 RSSI -= 4;
223 }
224
225 pPhyInfo->RxMIMOSignalStrength[i] = (u8) RSSI;
226
227 /* Get Rx snr value in DB */
228 pPhyInfo->RxSNR[i] = pDM_Odm->PhyDbgInfo.RxSNRdB[i] = (s32)(pPhyStaRpt->path_rxsnr[i]/2);
229 }
230
231 /* (2)PWDB, Average PWDB cacluated by hardware (for rate adaptive) */
232 rx_pwr_all = (((pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all) >> 1) & 0x7f)-110;
233
234 PWDB_ALL = odm_QueryRxPwrPercentage(rx_pwr_all);
235 PWDB_ALL_BT = PWDB_ALL;
236
237 pPhyInfo->RxPWDBAll = PWDB_ALL;
238 pPhyInfo->BTRxRSSIPercentage = PWDB_ALL_BT;
239 pPhyInfo->RxPower = rx_pwr_all;
240 pPhyInfo->RecvSignalPower = rx_pwr_all;
241
242 /* (3)EVM of HT rate */
243 if (pPktinfo->Rate >= DESC92C_RATEMCS8 && pPktinfo->Rate <= DESC92C_RATEMCS15)
244 Max_spatial_stream = 2; /* both spatial stream make sense */
245 else
246 Max_spatial_stream = 1; /* only spatial stream 1 makes sense */
247
248 for (i = 0; i < Max_spatial_stream; i++) {
249 /* Do not use shift operation like "rx_evmX >>= 1" because the compilor of free build environment */
250 /* fill most significant bit to "zero" when doing shifting operation which may change a negative */
251 /* value to positive one, then the dbm value (which is supposed to be negative) is not correct anymore. */
252 EVM = odm_EVMdbToPercentage((pPhyStaRpt->stream_rxevm[i])); /* dbm */
253
254 if (pPktinfo->bPacketMatchBSSID) {
255 if (i == RF_PATH_A) {
256 /* Fill value in RFD, Get the first spatial stream only */
257 pPhyInfo->SignalQuality = (u8)(EVM & 0xff);
258 }
259 pPhyInfo->RxMIMOSignalQuality[i] = (u8)(EVM & 0xff);
260 }
261 }
262 }
263 /* UI BSS List signal strength(in percentage), make it good looking, from 0~100. */
264 /* It is assigned to the BSS List in GetValueFromBeaconOrProbeRsp(). */
265 if (isCCKrate) {
266 pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(pDM_Odm, PWDB_ALL));/* PWDB_ALL; */
267 } else {
268 if (rf_rx_num != 0)
269 pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(pDM_Odm, total_rssi /= rf_rx_num));
270 }
271 }
272
odm_Init_RSSIForDM23a(struct dm_odm_t * pDM_Odm)273 void odm_Init_RSSIForDM23a(struct dm_odm_t *pDM_Odm)
274 {
275 }
276
odm_Process_RSSIForDM(struct dm_odm_t * pDM_Odm,struct phy_info * pPhyInfo,struct odm_packet_info * pPktinfo)277 static void odm_Process_RSSIForDM(struct dm_odm_t *pDM_Odm,
278 struct phy_info *pPhyInfo,
279 struct odm_packet_info *pPktinfo)
280 {
281 s32 UndecoratedSmoothedPWDB, UndecoratedSmoothedCCK;
282 s32 UndecoratedSmoothedOFDM, RSSI_Ave;
283 u8 isCCKrate = 0;
284 u8 RSSI_max, RSSI_min, i;
285 u32 OFDM_pkt = 0;
286 u32 Weighting = 0;
287 struct sta_info *pEntry;
288
289 if (pPktinfo->StationID == 0xFF)
290 return;
291
292 pEntry = pDM_Odm->pODM_StaInfo[pPktinfo->StationID];
293 if (!pEntry)
294 return;
295 if ((!pPktinfo->bPacketMatchBSSID))
296 return;
297
298 isCCKrate = (pPktinfo->Rate <= DESC92C_RATE11M) ? true : false;
299
300 /* Smart Antenna Debug Message------------------*/
301
302 UndecoratedSmoothedCCK = pEntry->rssi_stat.UndecoratedSmoothedCCK;
303 UndecoratedSmoothedOFDM = pEntry->rssi_stat.UndecoratedSmoothedOFDM;
304 UndecoratedSmoothedPWDB = pEntry->rssi_stat.UndecoratedSmoothedPWDB;
305
306 if (pPktinfo->bPacketToSelf || pPktinfo->bPacketBeacon) {
307 if (!isCCKrate) { /* ofdm rate */
308 if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_B] == 0) {
309 RSSI_Ave = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
310 } else {
311 if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_A] > pPhyInfo->RxMIMOSignalStrength[RF_PATH_B]) {
312 RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
313 RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
314 } else {
315 RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
316 RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
317 }
318 if ((RSSI_max - RSSI_min) < 3)
319 RSSI_Ave = RSSI_max;
320 else if ((RSSI_max - RSSI_min) < 6)
321 RSSI_Ave = RSSI_max - 1;
322 else if ((RSSI_max - RSSI_min) < 10)
323 RSSI_Ave = RSSI_max - 2;
324 else
325 RSSI_Ave = RSSI_max - 3;
326 }
327
328 /* 1 Process OFDM RSSI */
329 if (UndecoratedSmoothedOFDM <= 0) {
330 /* initialize */
331 UndecoratedSmoothedOFDM = pPhyInfo->RxPWDBAll;
332 } else {
333 if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedOFDM) {
334 UndecoratedSmoothedOFDM =
335 (((UndecoratedSmoothedOFDM)*(Rx_Smooth_Factor-1)) +
336 (RSSI_Ave)) / (Rx_Smooth_Factor);
337 UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM + 1;
338 } else {
339 UndecoratedSmoothedOFDM =
340 (((UndecoratedSmoothedOFDM)*(Rx_Smooth_Factor-1)) +
341 (RSSI_Ave)) / (Rx_Smooth_Factor);
342 }
343 }
344 pEntry->rssi_stat.PacketMap =
345 (pEntry->rssi_stat.PacketMap<<1) | BIT(0);
346 } else {
347 RSSI_Ave = pPhyInfo->RxPWDBAll;
348
349 /* 1 Process CCK RSSI */
350 if (UndecoratedSmoothedCCK <= 0) {
351 /* initialize */
352 UndecoratedSmoothedCCK = pPhyInfo->RxPWDBAll;
353 } else {
354 if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedCCK) {
355 UndecoratedSmoothedCCK =
356 (((UndecoratedSmoothedCCK)*(Rx_Smooth_Factor-1)) +
357 (pPhyInfo->RxPWDBAll)) / (Rx_Smooth_Factor);
358 UndecoratedSmoothedCCK = UndecoratedSmoothedCCK + 1;
359 } else {
360 UndecoratedSmoothedCCK =
361 (((UndecoratedSmoothedCCK)*(Rx_Smooth_Factor-1)) +
362 (pPhyInfo->RxPWDBAll)) / (Rx_Smooth_Factor);
363 }
364 }
365 pEntry->rssi_stat.PacketMap = pEntry->rssi_stat.PacketMap<<1;
366 }
367
368 /* 2011.07.28 LukeLee: modified to prevent unstable CCK RSSI */
369 if (pEntry->rssi_stat.ValidBit >= 64)
370 pEntry->rssi_stat.ValidBit = 64;
371 else
372 pEntry->rssi_stat.ValidBit++;
373
374 for (i = 0; i < pEntry->rssi_stat.ValidBit; i++)
375 OFDM_pkt +=
376 (u8)(pEntry->rssi_stat.PacketMap>>i) & BIT(0);
377
378 if (pEntry->rssi_stat.ValidBit == 64) {
379 Weighting = ((OFDM_pkt<<4) > 64)?64:(OFDM_pkt<<4);
380 UndecoratedSmoothedPWDB = (Weighting*UndecoratedSmoothedOFDM+(64-Weighting)*UndecoratedSmoothedCCK)>>6;
381 } else {
382 if (pEntry->rssi_stat.ValidBit != 0)
383 UndecoratedSmoothedPWDB = (OFDM_pkt*UndecoratedSmoothedOFDM+(pEntry->rssi_stat.ValidBit-OFDM_pkt)*UndecoratedSmoothedCCK)/pEntry->rssi_stat.ValidBit;
384 else
385 UndecoratedSmoothedPWDB = 0;
386 }
387 pEntry->rssi_stat.UndecoratedSmoothedCCK = UndecoratedSmoothedCCK;
388 pEntry->rssi_stat.UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM;
389 pEntry->rssi_stat.UndecoratedSmoothedPWDB = UndecoratedSmoothedPWDB;
390 }
391 }
392
ODM_PhyStatusQuery23a(struct dm_odm_t * pDM_Odm,struct phy_info * pPhyInfo,u8 * pPhyStatus,struct odm_packet_info * pPktinfo)393 void ODM_PhyStatusQuery23a(struct dm_odm_t *pDM_Odm, struct phy_info *pPhyInfo,
394 u8 *pPhyStatus, struct odm_packet_info *pPktinfo)
395 {
396 odm_RxPhyStatus92CSeries_Parsing(pDM_Odm, pPhyInfo,
397 pPhyStatus, pPktinfo);
398
399 odm_Process_RSSIForDM(pDM_Odm, pPhyInfo, pPktinfo);
400 }
401