kernel/drivers/staging/rtl8188eu/hal/odm_HWConfig.c

   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  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  *
  19  ******************************************************************************/
  20
  21 /*  include files */
  22
  23 #include "odm_precomp.h"
  24
  25 #define READ_AND_CONFIG     READ_AND_CONFIG_MP
  26
  27 #define READ_AND_CONFIG_MP(ic, txt) (ODM_ReadAndConfig##txt##ic(dm_odm))
  28 #define READ_AND_CONFIG_TC(ic, txt) (ODM_ReadAndConfig_TC##txt##ic(dm_odm))
  29
  30 static u8 odm_QueryRxPwrPercentage(s8 AntPower)
  31 {
  32         if ((AntPower <= -100) || (AntPower >= 20))
  33                 return  0;
  34         else if (AntPower >= 0)
  35                 return  100;
  36         else
  37                 return 100+AntPower;
  38 }
  39
  40 /*  2012/01/12 MH MOve some signal strength smooth method to MP HAL layer. */
  41 /*  IF other SW team do not support the feature, remove this section.?? */
  42 static s32 odm_SignalScaleMapping_92CSeries(struct odm_dm_struct *dm_odm, s32 CurrSig)
  43 {
  44         s32 RetSig = 0;
  45
  46         if (CurrSig >= 51 && CurrSig <= 100)
  47                 RetSig = 100;
  48         else if (CurrSig >= 41 && CurrSig <= 50)
  49                 RetSig = 80 + ((CurrSig - 40)*2);
  50         else if (CurrSig >= 31 && CurrSig <= 40)
  51                 RetSig = 66 + (CurrSig - 30);
  52         else if (CurrSig >= 21 && CurrSig <= 30)
  53                 RetSig = 54 + (CurrSig - 20);
  54         else if (CurrSig >= 10 && CurrSig <= 20)
  55                 RetSig = 42 + (((CurrSig - 10) * 2) / 3);
  56         else if (CurrSig >= 5 && CurrSig <= 9)
  57                 RetSig = 22 + (((CurrSig - 5) * 3) / 2);
  58         else if (CurrSig >= 1 && CurrSig <= 4)
  59                 RetSig = 6 + (((CurrSig - 1) * 3) / 2);
  60         else
  61                 RetSig = CurrSig;
  62         return RetSig;
  63 }
  64
  65 static s32 odm_SignalScaleMapping(struct odm_dm_struct *dm_odm, s32 CurrSig)
  66 {
  67         return odm_SignalScaleMapping_92CSeries(dm_odm, CurrSig);
  68 }
  69
  70 static u8 odm_EVMdbToPercentage(s8 Value)
  71 {
  72         /*  -33dB~0dB to 0%~99% */
  73         s8 ret_val;
  74
  75         ret_val = Value;
  76
  77         if (ret_val >= 0)
  78                 ret_val = 0;
  79         if (ret_val <= -33)
  80                 ret_val = -33;
  81
  82         ret_val = 0 - ret_val;
  83         ret_val *= 3;
  84
  85         if (ret_val == 99)
  86                 ret_val = 100;
  87         return ret_val;
  88 }
  89
  90 static void odm_RxPhyStatus92CSeries_Parsing(struct odm_dm_struct *dm_odm,
  91                         struct odm_phy_status_info *pPhyInfo,
  92                         u8 *pPhyStatus,
  93                         struct odm_per_pkt_info *pPktinfo)
  94 {
  95         struct sw_ant_switch *pDM_SWAT_Table = &dm_odm->DM_SWAT_Table;
  96         u8 i, Max_spatial_stream;
  97         s8 rx_pwr[4], rx_pwr_all = 0;
  98         u8 EVM, PWDB_ALL = 0, PWDB_ALL_BT;
  99         u8 RSSI, total_rssi = 0;
 100         u8 isCCKrate = 0;
 101         u8 rf_rx_num = 0;
 102         u8 cck_highpwr = 0;
 103         u8 LNA_idx, VGA_idx;
 104
 105         struct phy_status_rpt *pPhyStaRpt = (struct phy_status_rpt *)pPhyStatus;
 106
 107         isCCKrate = ((pPktinfo->Rate >= DESC92C_RATE1M) && (pPktinfo->Rate <= DESC92C_RATE11M)) ? true : false;
 108
 109         pPhyInfo->RxMIMOSignalQuality[RF_PATH_A] = -1;
 110         pPhyInfo->RxMIMOSignalQuality[RF_PATH_B] = -1;
 111
 112         if (isCCKrate) {
 113                 u8 cck_agc_rpt;
 114
 115                 dm_odm->PhyDbgInfo.NumQryPhyStatusCCK++;
 116                 /*  (1)Hardware does not provide RSSI for CCK */
 117                 /*  (2)PWDB, Average PWDB cacluated by hardware (for rate adaptive) */
 118
 119                 cck_highpwr = dm_odm->bCckHighPower;
 120
 121                 cck_agc_rpt =  pPhyStaRpt->cck_agc_rpt_ofdm_cfosho_a;
 122
 123                 /* 2011.11.28 LukeLee: 88E use different LNA & VGA gain table */
 124                 /* The RSSI formula should be modified according to the gain table */
 125                 /* In 88E, cck_highpwr is always set to 1 */
 126                 LNA_idx = (cck_agc_rpt & 0xE0) >> 5;
 127                 VGA_idx = cck_agc_rpt & 0x1F;
 128                 switch (LNA_idx) {
 129                 case 7:
 130                         if (VGA_idx <= 27)
 131                                 rx_pwr_all = -100 + 2*(27-VGA_idx); /* VGA_idx = 27~2 */
 132                         else
 133                                 rx_pwr_all = -100;
 134                         break;
 135                 case 6:
 136                         rx_pwr_all = -48 + 2*(2-VGA_idx); /* VGA_idx = 2~0 */
 137                         break;
 138                 case 5:
 139                         rx_pwr_all = -42 + 2*(7-VGA_idx); /* VGA_idx = 7~5 */
 140                         break;
 141                 case 4:
 142                         rx_pwr_all = -36 + 2*(7-VGA_idx); /* VGA_idx = 7~4 */
 143                         break;
 144                 case 3:
 145                         rx_pwr_all = -24 + 2*(7-VGA_idx); /* VGA_idx = 7~0 */
 146                         break;
 147                 case 2:
 148                         if (cck_highpwr)
 149                                 rx_pwr_all = -12 + 2*(5-VGA_idx); /* VGA_idx = 5~0 */
 150                         else
 151                                 rx_pwr_all = -6 + 2*(5-VGA_idx);
 152                         break;
 153                 case 1:
 154                         rx_pwr_all = 8-2*VGA_idx;
 155                         break;
 156                 case 0:
 157                         rx_pwr_all = 14-2*VGA_idx;
 158                         break;
 159                 default:
 160                         break;
 161                 }
 162                 rx_pwr_all += 6;
 163                 PWDB_ALL = odm_QueryRxPwrPercentage(rx_pwr_all);
 164                 if (!cck_highpwr) {
 165                         if (PWDB_ALL >= 80)
 166                                 PWDB_ALL = ((PWDB_ALL-80)<<1)+((PWDB_ALL-80)>>1)+80;
 167                         else if ((PWDB_ALL <= 78) && (PWDB_ALL >= 20))
 168                                 PWDB_ALL += 3;
 169                         if (PWDB_ALL > 100)
 170                                 PWDB_ALL = 100;
 171                 }
 172
 173                 pPhyInfo->RxPWDBAll = PWDB_ALL;
 174                 pPhyInfo->BTRxRSSIPercentage = PWDB_ALL;
 175                 pPhyInfo->RecvSignalPower = rx_pwr_all;
 176                 /*  (3) Get Signal Quality (EVM) */
 177                 if (pPktinfo->bPacketMatchBSSID) {
 178                         u8 SQ, SQ_rpt;
 179
 180                         if (pPhyInfo->RxPWDBAll > 40 && !dm_odm->bInHctTest) {
 181                                 SQ = 100;
 182                         } else {
 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                 dm_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 (dm_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 (dm_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] = (s32)(pPhyStaRpt->path_rxsnr[i]/2);
 229                         dm_odm->PhyDbgInfo.RxSNRdB[i] = (s32)(pPhyStaRpt->path_rxsnr[i]/2);
 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) /*  Fill value in RFD, Get the first spatial stream only */
 256                                         pPhyInfo->SignalQuality = (u8)(EVM & 0xff);
 257                                 pPhyInfo->RxMIMOSignalQuality[i] = (u8)(EVM & 0xff);
 258                         }
 259                 }
 260         }
 261         /* UI BSS List signal strength(in percentage), make it good looking, from 0~100. */
 262         /* It is assigned to the BSS List in GetValueFromBeaconOrProbeRsp(). */
 263         if (isCCKrate) {
 264                 pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(dm_odm, PWDB_ALL));/* PWDB_ALL; */
 265         } else {
 266                 if (rf_rx_num != 0)
 267                         pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(dm_odm, total_rssi /= rf_rx_num));
 268         }
 269
 270         /* For 92C/92D HW (Hybrid) Antenna Diversity */
 271         pDM_SWAT_Table->antsel = pPhyStaRpt->ant_sel;
 272         /* For 88E HW Antenna Diversity */
 273         dm_odm->DM_FatTable.antsel_rx_keep_0 = pPhyStaRpt->ant_sel;
 274         dm_odm->DM_FatTable.antsel_rx_keep_1 = pPhyStaRpt->ant_sel_b;
 275         dm_odm->DM_FatTable.antsel_rx_keep_2 = pPhyStaRpt->antsel_rx_keep_2;
 276 }
 277
 278 static void odm_Process_RSSIForDM(struct odm_dm_struct *dm_odm,
 279                                   struct odm_phy_status_info *pPhyInfo,
 280                                   struct odm_per_pkt_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         u8 antsel_tr_mux;
 290         struct fast_ant_train *pDM_FatTable = &dm_odm->DM_FatTable;
 291
 292         if (pPktinfo->StationID == 0xFF)
 293                 return;
 294         pEntry = dm_odm->pODM_StaInfo[pPktinfo->StationID];
 295         if (!IS_STA_VALID(pEntry))
 296                 return;
 297         if ((!pPktinfo->bPacketMatchBSSID))
 298                 return;
 299
 300         isCCKrate = ((pPktinfo->Rate >= DESC92C_RATE1M) && (pPktinfo->Rate <= DESC92C_RATE11M)) ? true : false;
 301
 302         /* Smart Antenna Debug Message------------------  */
 303
 304         if (dm_odm->AntDivType == CG_TRX_SMART_ANTDIV) {
 305                 if (pDM_FatTable->FAT_State == FAT_TRAINING_STATE) {
 306                         if (pPktinfo->bPacketToSelf) {
 307                                 antsel_tr_mux = (pDM_FatTable->antsel_rx_keep_2<<2) |
 308                                                 (pDM_FatTable->antsel_rx_keep_1<<1) |
 309                                                 pDM_FatTable->antsel_rx_keep_0;
 310                                 pDM_FatTable->antSumRSSI[antsel_tr_mux] += pPhyInfo->RxPWDBAll;
 311                                 pDM_FatTable->antRSSIcnt[antsel_tr_mux]++;
 312                         }
 313                 }
 314         } else if ((dm_odm->AntDivType == CG_TRX_HW_ANTDIV) || (dm_odm->AntDivType == CGCS_RX_HW_ANTDIV)) {
 315                 if (pPktinfo->bPacketToSelf || pPktinfo->bPacketBeacon) {
 316                         antsel_tr_mux = (pDM_FatTable->antsel_rx_keep_2<<2) |
 317                                         (pDM_FatTable->antsel_rx_keep_1<<1) | pDM_FatTable->antsel_rx_keep_0;
 318                         rtl88eu_dm_ant_sel_statistics(dm_odm, antsel_tr_mux, pPktinfo->StationID, pPhyInfo->RxPWDBAll);
 319                 }
 320         }
 321         /* Smart Antenna Debug Message------------------ */
 322
 323         UndecoratedSmoothedCCK =  pEntry->rssi_stat.UndecoratedSmoothedCCK;
 324         UndecoratedSmoothedOFDM = pEntry->rssi_stat.UndecoratedSmoothedOFDM;
 325         UndecoratedSmoothedPWDB = pEntry->rssi_stat.UndecoratedSmoothedPWDB;
 326
 327         if (pPktinfo->bPacketToSelf || pPktinfo->bPacketBeacon) {
 328                 if (!isCCKrate) { /* ofdm rate */
 329                         if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_B] == 0) {
 330                                 RSSI_Ave = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
 331                         } else {
 332                                 if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_A] > pPhyInfo->RxMIMOSignalStrength[RF_PATH_B]) {
 333                                         RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
 334                                         RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
 335                                 } else {
 336                                         RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
 337                                         RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
 338                                 }
 339                                 if ((RSSI_max - RSSI_min) < 3)
 340                                         RSSI_Ave = RSSI_max;
 341                                 else if ((RSSI_max - RSSI_min) < 6)
 342                                         RSSI_Ave = RSSI_max - 1;
 343                                 else if ((RSSI_max - RSSI_min) < 10)
 344                                         RSSI_Ave = RSSI_max - 2;
 345                                 else
 346                                         RSSI_Ave = RSSI_max - 3;
 347                         }
 348
 349                         /* 1 Process OFDM RSSI */
 350                         if (UndecoratedSmoothedOFDM <= 0) {     /*  initialize */
 351                                 UndecoratedSmoothedOFDM = pPhyInfo->RxPWDBAll;
 352                         } else {
 353                                 if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedOFDM) {
 354                                         UndecoratedSmoothedOFDM =
 355                                                         (((UndecoratedSmoothedOFDM)*(Rx_Smooth_Factor-1)) +
 356                                                         (RSSI_Ave)) / (Rx_Smooth_Factor);
 357                                         UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM + 1;
 358                                 } else {
 359                                         UndecoratedSmoothedOFDM =
 360                                                         (((UndecoratedSmoothedOFDM)*(Rx_Smooth_Factor-1)) +
 361                                                         (RSSI_Ave)) / (Rx_Smooth_Factor);
 362                                 }
 363                         }
 364
 365                         pEntry->rssi_stat.PacketMap = (pEntry->rssi_stat.PacketMap<<1) | BIT0;
 366
 367                 } else {
 368                         RSSI_Ave = pPhyInfo->RxPWDBAll;
 369
 370                         /* 1 Process CCK RSSI */
 371                         if (UndecoratedSmoothedCCK <= 0) {      /*  initialize */
 372                                 UndecoratedSmoothedCCK = pPhyInfo->RxPWDBAll;
 373                         } else {
 374                                 if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedCCK) {
 375                                         UndecoratedSmoothedCCK =
 376                                                         ((UndecoratedSmoothedCCK * (Rx_Smooth_Factor-1)) +
 377                                                         pPhyInfo->RxPWDBAll) / Rx_Smooth_Factor;
 378                                         UndecoratedSmoothedCCK = UndecoratedSmoothedCCK + 1;
 379                                 } else {
 380                                         UndecoratedSmoothedCCK =
 381                                                         ((UndecoratedSmoothedCCK * (Rx_Smooth_Factor-1)) +
 382                                                         pPhyInfo->RxPWDBAll) / Rx_Smooth_Factor;
 383                                 }
 384                         }
 385                         pEntry->rssi_stat.PacketMap = pEntry->rssi_stat.PacketMap<<1;
 386                 }
 387                 /* 2011.07.28 LukeLee: modified to prevent unstable CCK RSSI */
 388                 if (pEntry->rssi_stat.ValidBit >= 64)
 389                         pEntry->rssi_stat.ValidBit = 64;
 390                 else
 391                         pEntry->rssi_stat.ValidBit++;
 392
 393                 for (i = 0; i < pEntry->rssi_stat.ValidBit; i++)
 394                         OFDM_pkt += (u8)(pEntry->rssi_stat.PacketMap>>i)&BIT0;
 395
 396                 if (pEntry->rssi_stat.ValidBit == 64) {
 397                         Weighting = ((OFDM_pkt<<4) > 64) ? 64 : (OFDM_pkt<<4);
 398                         UndecoratedSmoothedPWDB = (Weighting*UndecoratedSmoothedOFDM+(64-Weighting)*UndecoratedSmoothedCCK)>>6;
 399                 } else {
 400                         if (pEntry->rssi_stat.ValidBit != 0)
 401                                 UndecoratedSmoothedPWDB = (OFDM_pkt * UndecoratedSmoothedOFDM +
 402                                                           (pEntry->rssi_stat.ValidBit-OFDM_pkt) *
 403                                                           UndecoratedSmoothedCCK)/pEntry->rssi_stat.ValidBit;
 404                         else
 405                                 UndecoratedSmoothedPWDB = 0;
 406                 }
 407                 pEntry->rssi_stat.UndecoratedSmoothedCCK = UndecoratedSmoothedCCK;
 408                 pEntry->rssi_stat.UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM;
 409                 pEntry->rssi_stat.UndecoratedSmoothedPWDB = UndecoratedSmoothedPWDB;
 410         }
 411 }
 412
 413 /*  Endianness before calling this API */
 414 static void ODM_PhyStatusQuery_92CSeries(struct odm_dm_struct *dm_odm,
 415                                          struct odm_phy_status_info *pPhyInfo,
 416                                          u8 *pPhyStatus,
 417                                          struct odm_per_pkt_info *pPktinfo)
 418 {
 419         odm_RxPhyStatus92CSeries_Parsing(dm_odm, pPhyInfo, pPhyStatus,
 420                                          pPktinfo);
 421         if (dm_odm->RSSI_test) {
 422                 ;/*  Select the packets to do RSSI checking for antenna switching. */
 423         } else {
 424                 odm_Process_RSSIForDM(dm_odm, pPhyInfo, pPktinfo);
 425         }
 426 }
 427
 428 void ODM_PhyStatusQuery(struct odm_dm_struct *dm_odm,
 429                         struct odm_phy_status_info *pPhyInfo,
 430                         u8 *pPhyStatus, struct odm_per_pkt_info *pPktinfo)
 431 {
 432         ODM_PhyStatusQuery_92CSeries(dm_odm, pPhyInfo, pPhyStatus, pPktinfo);
 433 }