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 ((pDM_Odm->SupportInterface == ODM_ITRF_USB) || (pDM_Odm->SupportInterface == ODM_ITRF_SDIO)) {
37 if (CurrSig >= 51 && CurrSig <= 100)
38 RetSig = 100;
39 else if (CurrSig >= 41 && CurrSig <= 50)
40 RetSig = 80 + ((CurrSig - 40)*2);
41 else if (CurrSig >= 31 && CurrSig <= 40)
42 RetSig = 66 + (CurrSig - 30);
43 else if (CurrSig >= 21 && CurrSig <= 30)
44 RetSig = 54 + (CurrSig - 20);
45 else if (CurrSig >= 10 && CurrSig <= 20)
46 RetSig = 42 + (((CurrSig - 10) * 2) / 3);
47 else if (CurrSig >= 5 && CurrSig <= 9)
48 RetSig = 22 + (((CurrSig - 5) * 3) / 2);
49 else if (CurrSig >= 1 && CurrSig <= 4)
50 RetSig = 6 + (((CurrSig - 1) * 3) / 2);
51 else
52 RetSig = CurrSig;
53 }
54 return RetSig;
55 }
56
odm_SignalScaleMapping(struct dm_odm_t * pDM_Odm,s32 CurrSig)57 static s32 odm_SignalScaleMapping(struct dm_odm_t *pDM_Odm, s32 CurrSig)
58 {
59 return odm_SignalScaleMapping_92CSeries(pDM_Odm, CurrSig);
60 }
61
62 static u8
odm_EVMdbToPercentage(s8 Value)63 odm_EVMdbToPercentage(
64 s8 Value
65 )
66 {
67 /* */
68 /* -33dB~0dB to 0%~99% */
69 /* */
70 s8 ret_val;
71
72 ret_val = Value;
73
74 if (ret_val >= 0)
75 ret_val = 0;
76 if (ret_val <= -33)
77 ret_val = -33;
78
79 ret_val = 0 - ret_val;
80 ret_val *= 3;
81
82 if (ret_val == 99)
83 ret_val = 100;
84
85 return ret_val;
86 }
87
odm_RxPhyStatus92CSeries_Parsing(struct dm_odm_t * pDM_Odm,struct phy_info * pPhyInfo,u8 * pPhyStatus,struct odm_packet_info * pPktinfo)88 static void odm_RxPhyStatus92CSeries_Parsing(struct dm_odm_t *pDM_Odm,
89 struct phy_info *pPhyInfo,
90 u8 *pPhyStatus,
91 struct odm_packet_info *pPktinfo)
92 {
93 struct phy_status_rpt *pPhyStaRpt = (struct phy_status_rpt *)pPhyStatus;
94 u8 i, Max_spatial_stream;
95 s8 rx_pwr[4], rx_pwr_all = 0;
96 u8 EVM, PWDB_ALL = 0, PWDB_ALL_BT;
97 u8 RSSI, total_rssi = 0;
98 u8 isCCKrate = 0;
99 u8 rf_rx_num = 0;
100 u8 cck_highpwr = 0;
101
102 isCCKrate = (pPktinfo->Rate <= DESC92C_RATE11M) ? true : false;
103 pPhyInfo->RxMIMOSignalQuality[RF_PATH_A] = -1;
104 pPhyInfo->RxMIMOSignalQuality[RF_PATH_B] = -1;
105
106 if (isCCKrate) {
107 u8 report;
108 u8 cck_agc_rpt;
109
110 pDM_Odm->PhyDbgInfo.NumQryPhyStatusCCK++;
111 /* (1)Hardware does not provide RSSI for CCK */
112 /* (2)PWDB, Average PWDB cacluated by hardware (for rate adaptive) */
113
114 cck_highpwr = pDM_Odm->bCckHighPower;
115
116 cck_agc_rpt = pPhyStaRpt->cck_agc_rpt_ofdm_cfosho_a ;
117
118 /* The RSSI formula should be modified according to the gain table */
119 if (!cck_highpwr) {
120 report = (cck_agc_rpt & 0xc0)>>6;
121 switch (report) {
122 /* Modify the RF RNA gain value to -40, -20, -2, 14 by Jenyu's suggestion */
123 /* Note: different RF with the different RNA gain. */
124 case 0x3:
125 rx_pwr_all = -46 - (cck_agc_rpt & 0x3e);
126 break;
127 case 0x2:
128 rx_pwr_all = -26 - (cck_agc_rpt & 0x3e);
129 break;
130 case 0x1:
131 rx_pwr_all = -12 - (cck_agc_rpt & 0x3e);
132 break;
133 case 0x0:
134 rx_pwr_all = 16 - (cck_agc_rpt & 0x3e);
135 break;
136 }
137 } else {
138 report = (cck_agc_rpt & 0x60)>>5;
139 switch (report) {
140 case 0x3:
141 rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f)<<1) ;
142 break;
143 case 0x2:
144 rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f)<<1);
145 break;
146 case 0x1:
147 rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f)<<1) ;
148 break;
149 case 0x0:
150 rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f)<<1) ;
151 break;
152 }
153 }
154
155 PWDB_ALL = odm_QueryRxPwrPercentage(rx_pwr_all);
156
157 /* Modification for ext-LNA board */
158 if (pDM_Odm->BoardType == ODM_BOARD_HIGHPWR) {
159 if ((cck_agc_rpt>>7) == 0) {
160 PWDB_ALL = (PWDB_ALL > 94) ? 100 : (PWDB_ALL+6);
161 } else {
162 if (PWDB_ALL > 38)
163 PWDB_ALL -= 16;
164 else
165 PWDB_ALL = (PWDB_ALL <= 16) ? (PWDB_ALL>>2) : (PWDB_ALL-12);
166 }
167
168 /* CCK modification */
169 if (PWDB_ALL > 25 && PWDB_ALL <= 60)
170 PWDB_ALL += 6;
171 } else { /* Modification for int-LNA board */
172 if (PWDB_ALL > 99)
173 PWDB_ALL -= 8;
174 else if (PWDB_ALL > 50 && PWDB_ALL <= 68)
175 PWDB_ALL += 4;
176 }
177 pPhyInfo->RxPWDBAll = PWDB_ALL;
178 pPhyInfo->BTRxRSSIPercentage = PWDB_ALL;
179 pPhyInfo->RecvSignalPower = rx_pwr_all;
180 /* (3) Get Signal Quality (EVM) */
181 if (pPktinfo->bPacketMatchBSSID) {
182 u8 SQ, SQ_rpt;
183
184 SQ_rpt = pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all;
185
186 if (SQ_rpt > 64)
187 SQ = 0;
188 else if (SQ_rpt < 20)
189 SQ = 100;
190 else
191 SQ = ((64-SQ_rpt) * 100) / 44;
192
193 pPhyInfo->SignalQuality = SQ;
194 pPhyInfo->RxMIMOSignalQuality[RF_PATH_A] = SQ;
195 pPhyInfo->RxMIMOSignalQuality[RF_PATH_B] = -1;
196 }
197 } else { /* is OFDM rate */
198 pDM_Odm->PhyDbgInfo.NumQryPhyStatusOFDM++;
199
200 /* (1)Get RSSI for HT rate */
201
202 for (i = RF_PATH_A; i < RF_PATH_MAX; i++) {
203 /* 2008/01/30 MH we will judge RF RX path now. */
204 if (pDM_Odm->RFPathRxEnable & BIT(i))
205 rf_rx_num++;
206
207 rx_pwr[i] = ((pPhyStaRpt->path_agc[i].gain & 0x3F)*2) - 110;
208
209 pPhyInfo->RxPwr[i] = rx_pwr[i];
210
211 /* Translate DBM to percentage. */
212 RSSI = odm_QueryRxPwrPercentage(rx_pwr[i]);
213 total_rssi += RSSI;
214
215 /* Modification for ext-LNA board */
216 if (pDM_Odm->BoardType == ODM_BOARD_HIGHPWR) {
217 if ((pPhyStaRpt->path_agc[i].trsw) == 1)
218 RSSI = (RSSI > 94) ? 100 : (RSSI+6);
219 else
220 RSSI = (RSSI <= 16) ? (RSSI>>3) : (RSSI-16);
221
222 if ((RSSI <= 34) && (RSSI >= 4))
223 RSSI -= 4;
224 }
225
226 pPhyInfo->RxMIMOSignalStrength[i] = (u8) RSSI;
227
228 /* Get Rx snr value in DB */
229 pPhyInfo->RxSNR[i] = pDM_Odm->PhyDbgInfo.RxSNRdB[i] = (s32)(pPhyStaRpt->path_rxsnr[i]/2);
230 }
231
232 /* (2)PWDB, Average PWDB cacluated by hardware (for rate adaptive) */
233 rx_pwr_all = (((pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all) >> 1) & 0x7f)-110;
234
235 PWDB_ALL = odm_QueryRxPwrPercentage(rx_pwr_all);
236 PWDB_ALL_BT = PWDB_ALL;
237
238 pPhyInfo->RxPWDBAll = PWDB_ALL;
239 pPhyInfo->BTRxRSSIPercentage = PWDB_ALL_BT;
240 pPhyInfo->RxPower = rx_pwr_all;
241 pPhyInfo->RecvSignalPower = rx_pwr_all;
242
243 /* (3)EVM of HT rate */
244 if (pPktinfo->Rate >= DESC92C_RATEMCS8 && pPktinfo->Rate <= DESC92C_RATEMCS15)
245 Max_spatial_stream = 2; /* both spatial stream make sense */
246 else
247 Max_spatial_stream = 1; /* only spatial stream 1 makes sense */
248
249 for (i = 0; i < Max_spatial_stream; i++) {
250 /* Do not use shift operation like "rx_evmX >>= 1" because the compilor of free build environment */
251 /* fill most significant bit to "zero" when doing shifting operation which may change a negative */
252 /* value to positive one, then the dbm value (which is supposed to be negative) is not correct anymore. */
253 EVM = odm_EVMdbToPercentage((pPhyStaRpt->stream_rxevm[i])); /* dbm */
254
255 if (pPktinfo->bPacketMatchBSSID) {
256 if (i == RF_PATH_A) {
257 /* Fill value in RFD, Get the first spatial stream only */
258 pPhyInfo->SignalQuality = (u8)(EVM & 0xff);
259 }
260 pPhyInfo->RxMIMOSignalQuality[i] = (u8)(EVM & 0xff);
261 }
262 }
263 }
264 /* UI BSS List signal strength(in percentage), make it good looking, from 0~100. */
265 /* It is assigned to the BSS List in GetValueFromBeaconOrProbeRsp(). */
266 if (isCCKrate) {
267 pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(pDM_Odm, PWDB_ALL));/* PWDB_ALL; */
268 } else {
269 if (rf_rx_num != 0)
270 pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(pDM_Odm, total_rssi /= rf_rx_num));
271 }
272 }
273
odm_Init_RSSIForDM23a(struct dm_odm_t * pDM_Odm)274 void odm_Init_RSSIForDM23a(struct dm_odm_t *pDM_Odm)
275 {
276 }
277
odm_Process_RSSIForDM(struct dm_odm_t * pDM_Odm,struct phy_info * pPhyInfo,struct odm_packet_info * pPktinfo)278 static void odm_Process_RSSIForDM(struct dm_odm_t *pDM_Odm,
279 struct phy_info *pPhyInfo,
280 struct odm_packet_info *pPktinfo)
281 {
282 s32 UndecoratedSmoothedPWDB, UndecoratedSmoothedCCK;
283 s32 UndecoratedSmoothedOFDM, RSSI_Ave;
284 u8 isCCKrate = 0;
285 u8 RSSI_max, RSSI_min, i;
286 u32 OFDM_pkt = 0;
287 u32 Weighting = 0;
288 struct sta_info *pEntry;
289
290 if (pPktinfo->StationID == 0xFF)
291 return;
292
293 pEntry = pDM_Odm->pODM_StaInfo[pPktinfo->StationID];
294 if (!pEntry)
295 return;
296 if ((!pPktinfo->bPacketMatchBSSID))
297 return;
298
299 isCCKrate = (pPktinfo->Rate <= DESC92C_RATE11M) ? true : false;
300
301 /* Smart Antenna Debug Message------------------*/
302
303 UndecoratedSmoothedCCK = pEntry->rssi_stat.UndecoratedSmoothedCCK;
304 UndecoratedSmoothedOFDM = pEntry->rssi_stat.UndecoratedSmoothedOFDM;
305 UndecoratedSmoothedPWDB = pEntry->rssi_stat.UndecoratedSmoothedPWDB;
306
307 if (pPktinfo->bPacketToSelf || pPktinfo->bPacketBeacon) {
308 if (!isCCKrate) { /* ofdm rate */
309 if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_B] == 0) {
310 RSSI_Ave = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
311 } else {
312 if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_A] > pPhyInfo->RxMIMOSignalStrength[RF_PATH_B]) {
313 RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
314 RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
315 } else {
316 RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
317 RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
318 }
319 if ((RSSI_max - RSSI_min) < 3)
320 RSSI_Ave = RSSI_max;
321 else if ((RSSI_max - RSSI_min) < 6)
322 RSSI_Ave = RSSI_max - 1;
323 else if ((RSSI_max - RSSI_min) < 10)
324 RSSI_Ave = RSSI_max - 2;
325 else
326 RSSI_Ave = RSSI_max - 3;
327 }
328
329 /* 1 Process OFDM RSSI */
330 if (UndecoratedSmoothedOFDM <= 0) {
331 /* initialize */
332 UndecoratedSmoothedOFDM = pPhyInfo->RxPWDBAll;
333 } else {
334 if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedOFDM) {
335 UndecoratedSmoothedOFDM =
336 (((UndecoratedSmoothedOFDM)*(Rx_Smooth_Factor-1)) +
337 (RSSI_Ave)) / (Rx_Smooth_Factor);
338 UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM + 1;
339 } else {
340 UndecoratedSmoothedOFDM =
341 (((UndecoratedSmoothedOFDM)*(Rx_Smooth_Factor-1)) +
342 (RSSI_Ave)) / (Rx_Smooth_Factor);
343 }
344 }
345 pEntry->rssi_stat.PacketMap =
346 (pEntry->rssi_stat.PacketMap<<1) | BIT(0);
347 } else {
348 RSSI_Ave = pPhyInfo->RxPWDBAll;
349
350 /* 1 Process CCK RSSI */
351 if (UndecoratedSmoothedCCK <= 0) {
352 /* initialize */
353 UndecoratedSmoothedCCK = pPhyInfo->RxPWDBAll;
354 } else {
355 if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedCCK) {
356 UndecoratedSmoothedCCK =
357 (((UndecoratedSmoothedCCK)*(Rx_Smooth_Factor-1)) +
358 (pPhyInfo->RxPWDBAll)) / (Rx_Smooth_Factor);
359 UndecoratedSmoothedCCK = UndecoratedSmoothedCCK + 1;
360 } else {
361 UndecoratedSmoothedCCK =
362 (((UndecoratedSmoothedCCK)*(Rx_Smooth_Factor-1)) +
363 (pPhyInfo->RxPWDBAll)) / (Rx_Smooth_Factor);
364 }
365 }
366 pEntry->rssi_stat.PacketMap = pEntry->rssi_stat.PacketMap<<1;
367 }
368
369 /* 2011.07.28 LukeLee: modified to prevent unstable CCK RSSI */
370 if (pEntry->rssi_stat.ValidBit >= 64)
371 pEntry->rssi_stat.ValidBit = 64;
372 else
373 pEntry->rssi_stat.ValidBit++;
374
375 for (i = 0; i < pEntry->rssi_stat.ValidBit; i++)
376 OFDM_pkt +=
377 (u8)(pEntry->rssi_stat.PacketMap>>i) & BIT(0);
378
379 if (pEntry->rssi_stat.ValidBit == 64) {
380 Weighting = ((OFDM_pkt<<4) > 64)?64:(OFDM_pkt<<4);
381 UndecoratedSmoothedPWDB = (Weighting*UndecoratedSmoothedOFDM+(64-Weighting)*UndecoratedSmoothedCCK)>>6;
382 } else {
383 if (pEntry->rssi_stat.ValidBit != 0)
384 UndecoratedSmoothedPWDB = (OFDM_pkt*UndecoratedSmoothedOFDM+(pEntry->rssi_stat.ValidBit-OFDM_pkt)*UndecoratedSmoothedCCK)/pEntry->rssi_stat.ValidBit;
385 else
386 UndecoratedSmoothedPWDB = 0;
387 }
388 pEntry->rssi_stat.UndecoratedSmoothedCCK = UndecoratedSmoothedCCK;
389 pEntry->rssi_stat.UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM;
390 pEntry->rssi_stat.UndecoratedSmoothedPWDB = UndecoratedSmoothedPWDB;
391 }
392 }
393
394 /* Endianness before calling this API */
ODM_PhyStatusQuery23a_92CSeries(struct dm_odm_t * pDM_Odm,struct phy_info * pPhyInfo,u8 * pPhyStatus,struct odm_packet_info * pPktinfo)395 static void ODM_PhyStatusQuery23a_92CSeries(struct dm_odm_t *pDM_Odm,
396 struct phy_info *pPhyInfo,
397 u8 *pPhyStatus,
398 struct odm_packet_info *pPktinfo)
399 {
400 odm_RxPhyStatus92CSeries_Parsing(pDM_Odm, pPhyInfo,
401 pPhyStatus, pPktinfo);
402
403 odm_Process_RSSIForDM(pDM_Odm, pPhyInfo, pPktinfo);
404 }
405
ODM_PhyStatusQuery23a(struct dm_odm_t * pDM_Odm,struct phy_info * pPhyInfo,u8 * pPhyStatus,struct odm_packet_info * pPktinfo)406 void ODM_PhyStatusQuery23a(struct dm_odm_t *pDM_Odm, struct phy_info *pPhyInfo,
407 u8 *pPhyStatus, struct odm_packet_info *pPktinfo)
408 {
409 ODM_PhyStatusQuery23a_92CSeries(pDM_Odm, pPhyInfo, pPhyStatus, pPktinfo);
410 }
411