drivers/staging/rtl8187se/r8180_dm.c

   1 //#include "r8180.h"
   2 #include "r8180_dm.h"
   3 #include "r8180_hw.h"
   4 #include "r8180_93cx6.h"
   5 //{by amy 080312
   6
   7 //
   8 //      Description:
   9 //              Return TRUE if we shall perform High Power Mecahnism, FALSE otherwise.
  10 //
  11 //+by amy 080312
  12 #define RATE_ADAPTIVE_TIMER_PERIOD      300
  13
  14 bool CheckHighPower(struct net_device *dev)
  15 {
  16         struct r8180_priv *priv = ieee80211_priv(dev);
  17         struct ieee80211_device *ieee = priv->ieee80211;
  18
  19         if(!priv->bRegHighPowerMechanism)
  20         {
  21                 return false;
  22         }
  23
  24         if(ieee->state == IEEE80211_LINKED_SCANNING)
  25         {
  26                 return false;
  27         }
  28
  29         return true;
  30 }
  31
  32 //
  33 //      Description:
  34 //              Update Tx power level if necessary.
  35 //              See also DoRxHighPower() and SetTxPowerLevel8185() for reference.
  36 //
  37 //      Note:
  38 //              The reason why we udpate Tx power level here instead of DoRxHighPower()
  39 //              is the number of IO to change Tx power is much more than channel TR switch
  40 //              and they are related to OFDM and MAC registers.
  41 //              So, we don't want to update it so frequently in per-Rx packet base.
  42 //
  43 void
  44 DoTxHighPower(
  45         struct net_device *dev
  46         )
  47 {
  48         struct r8180_priv *priv = ieee80211_priv(dev);
  49         u16                     HiPwrUpperTh = 0;
  50         u16                     HiPwrLowerTh = 0;
  51         u8                      RSSIHiPwrUpperTh;
  52         u8                      RSSIHiPwrLowerTh;
  53         u8                      u1bTmp;
  54         char                    OfdmTxPwrIdx, CckTxPwrIdx;
  55
  56         //printk("----> DoTxHighPower()\n");
  57
  58         HiPwrUpperTh = priv->RegHiPwrUpperTh;
  59         HiPwrLowerTh = priv->RegHiPwrLowerTh;
  60
  61         HiPwrUpperTh = HiPwrUpperTh * 10;
  62         HiPwrLowerTh = HiPwrLowerTh * 10;
  63         RSSIHiPwrUpperTh = priv->RegRSSIHiPwrUpperTh;
  64         RSSIHiPwrLowerTh = priv->RegRSSIHiPwrLowerTh;
  65
  66         //lzm add 080826
  67         OfdmTxPwrIdx  = priv->chtxpwr_ofdm[priv->ieee80211->current_network.channel];
  68         CckTxPwrIdx  = priv->chtxpwr[priv->ieee80211->current_network.channel];
  69
  70         //      printk("DoTxHighPower() - UndecoratedSmoothedSS:%d, CurCCKRSSI = %d , bCurCCKPkt= %d \n", priv->UndecoratedSmoothedSS, priv->CurCCKRSSI, priv->bCurCCKPkt );
  71
  72         if((priv->UndecoratedSmoothedSS > HiPwrUpperTh) ||
  73                 (priv->bCurCCKPkt && (priv->CurCCKRSSI > RSSIHiPwrUpperTh)))
  74         {
  75                 // Stevenl suggested that degrade 8dbm in high power sate. 2007-12-04 Isaiah
  76
  77         //      printk("=====>DoTxHighPower() - High Power - UndecoratedSmoothedSS:%d,  HiPwrUpperTh = %d \n", priv->UndecoratedSmoothedSS, HiPwrUpperTh );
  78                 priv->bToUpdateTxPwr = true;
  79                 u1bTmp= read_nic_byte(dev, CCK_TXAGC);
  80
  81                 // If it never enter High Power.
  82                 if( CckTxPwrIdx == u1bTmp)
  83                 {
  84                 u1bTmp = (u1bTmp > 16) ? (u1bTmp -16): 0;  // 8dbm
  85                 write_nic_byte(dev, CCK_TXAGC, u1bTmp);
  86
  87                 u1bTmp= read_nic_byte(dev, OFDM_TXAGC);
  88                 u1bTmp = (u1bTmp > 16) ? (u1bTmp -16): 0;  // 8dbm
  89                 write_nic_byte(dev, OFDM_TXAGC, u1bTmp);
  90                 }
  91
  92         }
  93         else if((priv->UndecoratedSmoothedSS < HiPwrLowerTh) &&
  94                 (!priv->bCurCCKPkt || priv->CurCCKRSSI < RSSIHiPwrLowerTh))
  95         {
  96         //       printk("DoTxHighPower() - lower Power - UndecoratedSmoothedSS:%d,  HiPwrUpperTh = %d \n", priv->UndecoratedSmoothedSS, HiPwrLowerTh );
  97                 if(priv->bToUpdateTxPwr)
  98                 {
  99                         priv->bToUpdateTxPwr = false;
 100                         //SD3 required.
 101                         u1bTmp= read_nic_byte(dev, CCK_TXAGC);
 102                         if(u1bTmp < CckTxPwrIdx)
 103                         {
 104                         //u1bTmp = ((u1bTmp+16) > 35) ? 35: (u1bTmp+16);  // 8dbm
 105                         //write_nic_byte(dev, CCK_TXAGC, u1bTmp);
 106                         write_nic_byte(dev, CCK_TXAGC, CckTxPwrIdx);
 107                         }
 108
 109                         u1bTmp= read_nic_byte(dev, OFDM_TXAGC);
 110                         if(u1bTmp < OfdmTxPwrIdx)
 111                         {
 112                         //u1bTmp = ((u1bTmp+16) > 35) ? 35: (u1bTmp+16);  // 8dbm
 113                         //write_nic_byte(dev, OFDM_TXAGC, u1bTmp);
 114                         write_nic_byte(dev, OFDM_TXAGC, OfdmTxPwrIdx);
 115                         }
 116                 }
 117         }
 118
 119         //printk("<---- DoTxHighPower()\n");
 120 }
 121
 122
 123 //
 124 //      Description:
 125 //              Callback function of UpdateTxPowerWorkItem.
 126 //              Because of some event happend, e.g. CCX TPC, High Power Mechanism,
 127 //              We update Tx power of current channel again.
 128 //
 129 void rtl8180_tx_pw_wq (struct work_struct *work)
 130 {
 131 //      struct r8180_priv *priv = container_of(work, struct r8180_priv, watch_dog_wq);
 132 //      struct ieee80211_device * ieee = (struct ieee80211_device*)
 133 //                                             container_of(work, struct ieee80211_device, watch_dog_wq);
 134         struct delayed_work *dwork = to_delayed_work(work);
 135         struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,tx_pw_wq);
 136         struct net_device *dev = ieee->dev;
 137
 138 //      printk("----> UpdateTxPowerWorkItemCallback()\n");
 139
 140         DoTxHighPower(dev);
 141
 142 //      printk("<---- UpdateTxPowerWorkItemCallback()\n");
 143 }
 144
 145
 146 //
 147 //      Description:
 148 //              Return TRUE if we shall perform DIG Mecahnism, FALSE otherwise.
 149 //
 150 bool
 151 CheckDig(
 152         struct net_device *dev
 153         )
 154 {
 155         struct r8180_priv *priv = ieee80211_priv(dev);
 156         struct ieee80211_device *ieee = priv->ieee80211;
 157
 158         if(!priv->bDigMechanism)
 159                 return false;
 160
 161         if(ieee->state != IEEE80211_LINKED)
 162                 return false;
 163
 164         //if(priv->CurrentOperaRate < 36) // Schedule Dig under all OFDM rates. By Bruce, 2007-06-01.
 165         if((priv->ieee80211->rate/5) < 36) // Schedule Dig under all OFDM rates. By Bruce, 2007-06-01.
 166                 return false;
 167         return true;
 168 }
 169 //
 170 //      Description:
 171 //              Implementation of DIG for Zebra and Zebra2.
 172 //
 173 void
 174 DIG_Zebra(
 175         struct net_device *dev
 176         )
 177 {
 178         struct r8180_priv *priv = ieee80211_priv(dev);
 179         u16                     CCKFalseAlarm, OFDMFalseAlarm;
 180         u16                     OfdmFA1, OfdmFA2;
 181         int                     InitialGainStep = 7; // The number of initial gain stages.
 182         int                     LowestGainStage = 4; // The capable lowest stage of performing dig workitem.
 183         u32                     AwakePeriodIn2Sec=0;
 184
 185         //printk("---------> DIG_Zebra()\n");
 186
 187         CCKFalseAlarm = (u16)(priv->FalseAlarmRegValue & 0x0000ffff);
 188         OFDMFalseAlarm = (u16)((priv->FalseAlarmRegValue >> 16) & 0x0000ffff);
 189         OfdmFA1 =  0x15;
 190         OfdmFA2 = ((u16)(priv->RegDigOfdmFaUpTh)) << 8;
 191
 192 //      printk("DIG**********CCK False Alarm: %#X \n",CCKFalseAlarm);
 193 //      printk("DIG**********OFDM False Alarm: %#X \n",OFDMFalseAlarm);
 194
 195         // The number of initial gain steps is different, by Bruce, 2007-04-13.
 196         if (priv->InitialGain == 0 ) //autoDIG
 197         { // Advised from SD3 DZ
 198                 priv->InitialGain = 4; // In 87B, m74dBm means State 4 (m82dBm)
 199         }
 200         { // Advised from SD3 DZ
 201                 OfdmFA1 =  0x20;
 202         }
 203
 204 #if 1 //lzm reserved 080826
 205         AwakePeriodIn2Sec = (2000-priv ->DozePeriodInPast2Sec);
 206         //printk("&&& DozePeriod=%d AwakePeriod=%d\n", priv->DozePeriodInPast2Sec, AwakePeriodIn2Sec);
 207         priv ->DozePeriodInPast2Sec=0;
 208
 209         if(AwakePeriodIn2Sec)
 210         {
 211                 //RT_TRACE(COMP_DIG, DBG_TRACE, ("DIG: AwakePeriodIn2Sec(%d) - FATh(0x%X , 0x%X) ->",AwakePeriodIn2Sec, OfdmFA1, OfdmFA2));
 212                 // adjuest DIG threshold.
 213                 OfdmFA1 =  (u16)((OfdmFA1*AwakePeriodIn2Sec)  / 2000) ;
 214                 OfdmFA2 =  (u16)((OfdmFA2*AwakePeriodIn2Sec)  / 2000) ;
 215                 //RT_TRACE(COMP_DIG, DBG_TRACE, ("( 0x%X , 0x%X)\n", OfdmFA1, OfdmFA2));
 216         }
 217         else
 218         {
 219                 ;//RT_TRACE(COMP_DIG, DBG_WARNING, ("ERROR!!  AwakePeriodIn2Sec should not be ZERO!!\n"));
 220         }
 221 #endif
 222
 223         InitialGainStep = 8;
 224         LowestGainStage = priv->RegBModeGainStage; // Lowest gain stage.
 225
 226         if (OFDMFalseAlarm > OfdmFA1)
 227         {
 228                 if (OFDMFalseAlarm > OfdmFA2)
 229                 {
 230                         priv->DIG_NumberFallbackVote++;
 231                         if (priv->DIG_NumberFallbackVote >1)
 232                         {
 233                                 //serious OFDM  False Alarm, need fallback
 234                                 if (priv->InitialGain < InitialGainStep)
 235                                 {
 236                                         priv->InitialGainBackUp= priv->InitialGain;
 237
 238                                         priv->InitialGain = (priv->InitialGain + 1);
 239 //                                      printk("DIG**********OFDM False Alarm: %#X,  OfdmFA1: %#X, OfdmFA2: %#X\n", OFDMFalseAlarm, OfdmFA1, OfdmFA2);
 240 //                                      printk("DIG+++++++ fallback OFDM:%d \n", priv->InitialGain);
 241                                         UpdateInitialGain(dev);
 242                                 }
 243                                 priv->DIG_NumberFallbackVote = 0;
 244                                 priv->DIG_NumberUpgradeVote=0;
 245                         }
 246                 }
 247                 else
 248                 {
 249                         if (priv->DIG_NumberFallbackVote)
 250                                 priv->DIG_NumberFallbackVote--;
 251                 }
 252                 priv->DIG_NumberUpgradeVote=0;
 253         }
 254         else
 255         {
 256                 if (priv->DIG_NumberFallbackVote)
 257                         priv->DIG_NumberFallbackVote--;
 258                 priv->DIG_NumberUpgradeVote++;
 259
 260                 if (priv->DIG_NumberUpgradeVote>9)
 261                 {
 262                         if (priv->InitialGain > LowestGainStage) // In 87B, m78dBm means State 4 (m864dBm)
 263                         {
 264                                 priv->InitialGainBackUp= priv->InitialGain;
 265
 266                                 priv->InitialGain = (priv->InitialGain - 1);
 267 //                              printk("DIG**********OFDM False Alarm: %#X,  OfdmFA1: %#X, OfdmFA2: %#X\n", OFDMFalseAlarm, OfdmFA1, OfdmFA2);
 268 //                              printk("DIG--------- Upgrade OFDM:%d \n", priv->InitialGain);
 269                                 UpdateInitialGain(dev);
 270                         }
 271                         priv->DIG_NumberFallbackVote = 0;
 272                         priv->DIG_NumberUpgradeVote=0;
 273                 }
 274         }
 275
 276 //      printk("DIG+++++++ OFDM:%d\n", priv->InitialGain);
 277         //printk("<--------- DIG_Zebra()\n");
 278 }
 279
 280 //
 281 //      Description:
 282 //              Dispatch DIG implementation according to RF.
 283 //
 284 void
 285 DynamicInitGain(
 286         struct net_device *dev
 287         )
 288 {
 289         struct r8180_priv *priv = ieee80211_priv(dev);
 290
 291         switch(priv->rf_chip)
 292         {
 293                 case RF_ZEBRA2:  // [AnnieWorkaround] For Zebra2, 2005-08-01.
 294                 case RF_ZEBRA4:
 295                         DIG_Zebra( dev );
 296                         break;
 297
 298                 default:
 299                         printk("DynamicInitGain(): unknown RFChipID(%d) !!!\n", priv->rf_chip);
 300                         break;
 301         }
 302 }
 303
 304 void rtl8180_hw_dig_wq (struct work_struct *work)
 305 {
 306 //      struct r8180_priv *priv = container_of(work, struct r8180_priv, watch_dog_wq);
 307 //      struct ieee80211_device * ieee = (struct ieee80211_device*)
 308 //                                             container_of(work, struct ieee80211_device, watch_dog_wq);
 309         struct delayed_work *dwork = to_delayed_work(work);
 310         struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,hw_dig_wq);
 311         struct net_device *dev = ieee->dev;
 312         struct r8180_priv *priv = ieee80211_priv(dev);
 313
 314         // Read CCK and OFDM False Alarm.
 315         priv->FalseAlarmRegValue = read_nic_dword(dev, CCK_FALSE_ALARM);
 316
 317
 318         // Adjust Initial Gain dynamically.
 319         DynamicInitGain(dev);
 320
 321 }
 322
 323 int
 324 IncludedInSupportedRates(
 325         struct r8180_priv       *priv,
 326         u8              TxRate  )
 327 {
 328     u8 rate_len;
 329         u8 rate_ex_len;
 330         u8                      RateMask = 0x7F;
 331         u8                      idx;
 332         unsigned short          Found = 0;
 333         u8                      NaiveTxRate = TxRate&RateMask;
 334
 335     rate_len = priv->ieee80211->current_network.rates_len;
 336         rate_ex_len = priv->ieee80211->current_network.rates_ex_len;
 337         for( idx=0; idx< rate_len; idx++ )
 338         {
 339                 if( (priv->ieee80211->current_network.rates[idx] & RateMask) == NaiveTxRate )
 340                 {
 341                         Found = 1;
 342                         goto found_rate;
 343                 }
 344         }
 345     for( idx=0; idx< rate_ex_len; idx++ )
 346         {
 347                 if( (priv->ieee80211->current_network.rates_ex[idx] & RateMask) == NaiveTxRate )
 348                 {
 349                         Found = 1;
 350                         goto found_rate;
 351                 }
 352         }
 353         return Found;
 354         found_rate:
 355         return Found;
 356 }
 357
 358 //
 359 //      Description:
 360 //              Get the Tx rate one degree up form the input rate in the supported rates.
 361 //              Return the upgrade rate if it is successed, otherwise return the input rate.
 362 //      By Bruce, 2007-06-05.
 363 //
 364 u8
 365 GetUpgradeTxRate(
 366         struct net_device *dev,
 367         u8                              rate
 368         )
 369 {
 370         struct r8180_priv *priv = ieee80211_priv(dev);
 371         u8                      UpRate;
 372
 373         // Upgrade 1 degree.
 374         switch(rate)
 375         {
 376         case 108: // Up to 54Mbps.
 377                 UpRate = 108;
 378                 break;
 379
 380         case 96: // Up to 54Mbps.
 381                 UpRate = 108;
 382                 break;
 383
 384         case 72: // Up to 48Mbps.
 385                 UpRate = 96;
 386                 break;
 387
 388         case 48: // Up to 36Mbps.
 389                 UpRate = 72;
 390                 break;
 391
 392         case 36: // Up to 24Mbps.
 393                 UpRate = 48;
 394                 break;
 395
 396         case 22: // Up to 18Mbps.
 397                 UpRate = 36;
 398                 break;
 399
 400         case 11: // Up to 11Mbps.
 401                 UpRate = 22;
 402                 break;
 403
 404         case 4: // Up to 5.5Mbps.
 405                 UpRate = 11;
 406                 break;
 407
 408         case 2: // Up to 2Mbps.
 409                 UpRate = 4;
 410                 break;
 411
 412         default:
 413                 printk("GetUpgradeTxRate(): Input Tx Rate(%d) is undefined!\n", rate);
 414                 return rate;
 415         }
 416         // Check if the rate is valid.
 417         if(IncludedInSupportedRates(priv, UpRate))
 418         {
 419 //              printk("GetUpgradeTxRate(): GetUpgrade Tx rate(%d) from %d !\n", UpRate, priv->CurrentOperaRate);
 420                 return UpRate;
 421         }
 422         else
 423         {
 424                 //printk("GetUpgradeTxRate(): Tx rate (%d) is not in supported rates\n", UpRate);
 425                 return rate;
 426         }
 427         return rate;
 428 }
 429 //
 430 //      Description:
 431 //              Get the Tx rate one degree down form the input rate in the supported rates.
 432 //              Return the degrade rate if it is successed, otherwise return the input rate.
 433 //      By Bruce, 2007-06-05.
 434 //
 435 u8
 436 GetDegradeTxRate(
 437         struct net_device *dev,
 438         u8         rate
 439         )
 440 {
 441         struct r8180_priv *priv = ieee80211_priv(dev);
 442         u8                      DownRate;
 443
 444         // Upgrade 1 degree.
 445         switch(rate)
 446         {
 447         case 108: // Down to 48Mbps.
 448                 DownRate = 96;
 449                 break;
 450
 451         case 96: // Down to 36Mbps.
 452                 DownRate = 72;
 453                 break;
 454
 455         case 72: // Down to 24Mbps.
 456                 DownRate = 48;
 457                 break;
 458
 459         case 48: // Down to 18Mbps.
 460                 DownRate = 36;
 461                 break;
 462
 463         case 36: // Down to 11Mbps.
 464                 DownRate = 22;
 465                 break;
 466
 467         case 22: // Down to 5.5Mbps.
 468                 DownRate = 11;
 469                 break;
 470
 471         case 11: // Down to 2Mbps.
 472                 DownRate = 4;
 473                 break;
 474
 475         case 4: // Down to 1Mbps.
 476                 DownRate = 2;
 477                 break;
 478
 479         case 2: // Down to 1Mbps.
 480                 DownRate = 2;
 481                 break;
 482
 483         default:
 484                 printk("GetDegradeTxRate(): Input Tx Rate(%d) is undefined!\n", rate);
 485                 return rate;
 486         }
 487         // Check if the rate is valid.
 488         if(IncludedInSupportedRates(priv, DownRate))
 489         {
 490 //              printk("GetDegradeTxRate(): GetDegrade Tx rate(%d) from %d!\n", DownRate, priv->CurrentOperaRate);
 491                 return DownRate;
 492         }
 493         else
 494         {
 495                 //printk("GetDegradeTxRate(): Tx rate (%d) is not in supported rates\n", DownRate);
 496                 return rate;
 497         }
 498         return rate;
 499 }
 500 //
 501 //      Helper function to determine if specified data rate is
 502 //      CCK rate.
 503 //      2005.01.25, by rcnjko.
 504 //
 505 bool
 506 MgntIsCckRate(
 507         u16     rate
 508         )
 509 {
 510         bool bReturn = false;
 511
 512         if((rate <= 22) && (rate != 12) && (rate != 18))
 513         {
 514                 bReturn = true;
 515         }
 516
 517         return bReturn;
 518 }
 519 //
 520 //      Description:
 521 //              Tx Power tracking mechanism routine on 87SE.
 522 //      Created by Roger, 2007.12.11.
 523 //
 524 void
 525 TxPwrTracking87SE(
 526         struct net_device *dev
 527 )
 528 {
 529         struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
 530         u8      tmpu1Byte, CurrentThermal, Idx;
 531         char    CckTxPwrIdx, OfdmTxPwrIdx;
 532         //u32   u4bRfReg;
 533
 534         tmpu1Byte = read_nic_byte(dev, EN_LPF_CAL);
 535         CurrentThermal = (tmpu1Byte & 0xf0)>>4; //[ 7:4]: thermal meter indication.
 536         CurrentThermal = (CurrentThermal>0x0c)? 0x0c:CurrentThermal;//lzm add 080826
 537
 538         //printk("TxPwrTracking87SE(): CurrentThermal(%d)\n", CurrentThermal);
 539
 540         if( CurrentThermal != priv->ThermalMeter)
 541         {
 542 //              printk("TxPwrTracking87SE(): Thermal meter changed!!!\n");
 543
 544                 // Update Tx Power level on each channel.
 545                 for(Idx = 1; Idx<15; Idx++)
 546                 {
 547                         CckTxPwrIdx = priv->chtxpwr[Idx];
 548                         OfdmTxPwrIdx = priv->chtxpwr_ofdm[Idx];
 549
 550                         if( CurrentThermal > priv->ThermalMeter )
 551                         { // higher thermal meter.
 552                                 CckTxPwrIdx += (CurrentThermal - priv->ThermalMeter)*2;
 553                                 OfdmTxPwrIdx += (CurrentThermal - priv->ThermalMeter)*2;
 554
 555                                 if(CckTxPwrIdx >35)
 556                                         CckTxPwrIdx = 35; // Force TxPower to maximal index.
 557                                 if(OfdmTxPwrIdx >35)
 558                                         OfdmTxPwrIdx = 35;
 559                         }
 560                         else
 561                         { // lower thermal meter.
 562                                 CckTxPwrIdx -= (priv->ThermalMeter - CurrentThermal)*2;
 563                                 OfdmTxPwrIdx -= (priv->ThermalMeter - CurrentThermal)*2;
 564
 565                                 if(CckTxPwrIdx <0)
 566                                         CckTxPwrIdx = 0;
 567                                 if(OfdmTxPwrIdx <0)
 568                                         OfdmTxPwrIdx = 0;
 569                         }
 570
 571                         // Update TxPower level on CCK and OFDM resp.
 572                         priv->chtxpwr[Idx] = CckTxPwrIdx;
 573                         priv->chtxpwr_ofdm[Idx] = OfdmTxPwrIdx;
 574                 }
 575
 576                 // Update TxPower level immediately.
 577                 rtl8225z2_SetTXPowerLevel(dev, priv->ieee80211->current_network.channel);
 578         }
 579         priv->ThermalMeter = CurrentThermal;
 580 }
 581 void
 582 StaRateAdaptive87SE(
 583         struct net_device *dev
 584         )
 585 {
 586         struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
 587         unsigned long                   CurrTxokCnt;
 588         u16                     CurrRetryCnt;
 589         u16                     CurrRetryRate;
 590         //u16                   i,idx;
 591         unsigned long           CurrRxokCnt;
 592         bool                    bTryUp = false;
 593         bool                    bTryDown = false;
 594         u8                      TryUpTh = 1;
 595         u8                      TryDownTh = 2;
 596         u32                     TxThroughput;
 597         long            CurrSignalStrength;
 598         bool            bUpdateInitialGain = false;
 599         u8                      u1bOfdm=0, u1bCck = 0;
 600         char            OfdmTxPwrIdx, CckTxPwrIdx;
 601
 602         priv->RateAdaptivePeriod= RATE_ADAPTIVE_TIMER_PERIOD;
 603
 604
 605         CurrRetryCnt    = priv->CurrRetryCnt;
 606         CurrTxokCnt     = priv->NumTxOkTotal - priv->LastTxokCnt;
 607         CurrRxokCnt     = priv->ieee80211->NumRxOkTotal - priv->LastRxokCnt;
 608         CurrSignalStrength = priv->Stats_RecvSignalPower;
 609         TxThroughput = (u32)(priv->NumTxOkBytesTotal - priv->LastTxOKBytes);
 610         priv->LastTxOKBytes = priv->NumTxOkBytesTotal;
 611         priv->CurrentOperaRate = priv->ieee80211->rate/5;
 612         //printk("priv->CurrentOperaRate is %d\n",priv->CurrentOperaRate);
 613         //2 Compute retry ratio.
 614         if (CurrTxokCnt>0)
 615         {
 616                 CurrRetryRate = (u16)(CurrRetryCnt*100/CurrTxokCnt);
 617         }
 618         else
 619         { // It may be serious retry. To distinguish serious retry or no packets modified by Bruce
 620                 CurrRetryRate = (u16)(CurrRetryCnt*100/1);
 621         }
 622
 623
 624         //
 625         // Added by Roger, 2007.01.02.
 626         // For debug information.
 627         //
 628         //printk("\n(1) pHalData->LastRetryRate: %d \n",priv->LastRetryRate);
 629         //printk("(2) RetryCnt = %d  \n", CurrRetryCnt);
 630         //printk("(3) TxokCnt = %d \n", CurrTxokCnt);
 631         //printk("(4) CurrRetryRate = %d \n", CurrRetryRate);
 632         //printk("(5) CurrSignalStrength = %d \n",CurrSignalStrength);
 633         //printk("(6) TxThroughput is %d\n",TxThroughput);
 634         //printk("priv->NumTxOkBytesTotal is %d\n",priv->NumTxOkBytesTotal);
 635
 636         priv->LastRetryCnt = priv->CurrRetryCnt;
 637         priv->LastTxokCnt = priv->NumTxOkTotal;
 638         priv->LastRxokCnt = priv->ieee80211->NumRxOkTotal;
 639         priv->CurrRetryCnt = 0;
 640
 641         //2No Tx packets, return to init_rate or not?
 642         if (CurrRetryRate==0 && CurrTxokCnt == 0)
 643         {
 644                 //
 645                 //After 9 (30*300ms) seconds in this condition, we try to raise rate.
 646                 //
 647                 priv->TryupingCountNoData++;
 648
 649 //              printk("No Tx packets, TryupingCountNoData(%d)\n", priv->TryupingCountNoData);
 650                 //[TRC Dell Lab] Extend raised period from 4.5sec to 9sec, Isaiah 2008-02-15 18:00
 651                 if (priv->TryupingCountNoData>30)
 652                 {
 653                         priv->TryupingCountNoData = 0;
 654                         priv->CurrentOperaRate = GetUpgradeTxRate(dev, priv->CurrentOperaRate);
 655                         // Reset Fail Record
 656                         priv->LastFailTxRate = 0;
 657                         priv->LastFailTxRateSS = -200;
 658                         priv->FailTxRateCount = 0;
 659                 }
 660                 goto SetInitialGain;
 661         }
 662         else
 663         {
 664                 priv->TryupingCountNoData=0; //Reset trying up times.
 665         }
 666
 667
 668         //
 669         // For Netgear case, I comment out the following signal strength estimation,
 670         // which can results in lower rate to transmit when sample is NOT enough (e.g. PING request).
 671         // 2007.04.09, by Roger.
 672         //
 673
 674         //
 675         // Restructure rate adaptive as the following main stages:
 676         // (1) Add retry threshold in 54M upgrading condition with signal strength.
 677         // (2) Add the mechanism to degrade to CCK rate according to signal strength
 678         //              and retry rate.
 679         // (3) Remove all Initial Gain Updates over OFDM rate. To avoid the complicated
 680         //              situation, Initial Gain Update is upon on DIG mechanism except CCK rate.
 681         // (4) Add the mehanism of trying to upgrade tx rate.
 682         // (5) Record the information of upping tx rate to avoid trying upping tx rate constantly.
 683         // By Bruce, 2007-06-05.
 684         //
 685         //
 686
 687         // 11Mbps or 36Mbps
 688         // Check more times in these rate(key rates).
 689         //
 690         if(priv->CurrentOperaRate == 22 || priv->CurrentOperaRate == 72)
 691         {
 692                 TryUpTh += 9;
 693         }
 694         //
 695         // Let these rates down more difficult.
 696         //
 697         if(MgntIsCckRate(priv->CurrentOperaRate) || priv->CurrentOperaRate == 36)
 698         {
 699                         TryDownTh += 1;
 700         }
 701
 702         //1 Adjust Rate.
 703         if (priv->bTryuping == true)
 704         {
 705                 //2 For Test Upgrading mechanism
 706                 // Note:
 707                 //      Sometimes the throughput is upon on the capability bwtween the AP and NIC,
 708                 //      thus the low data rate does not improve the performance.
 709                 //      We randomly upgrade the data rate and check if the retry rate is improved.
 710
 711                 // Upgrading rate did not improve the retry rate, fallback to the original rate.
 712                 if ( (CurrRetryRate > 25) && TxThroughput < priv->LastTxThroughput)
 713                 {
 714                         //Not necessary raising rate, fall back rate.
 715                         bTryDown = true;
 716                         //printk("case1-1: Not necessary raising rate, fall back rate....\n");
 717                         //printk("case1-1: pMgntInfo->CurrentOperaRate =%d, TxThroughput = %d, LastThroughput = %d\n",
 718                         //              priv->CurrentOperaRate, TxThroughput, priv->LastTxThroughput);
 719                 }
 720                 else
 721                 {
 722                         priv->bTryuping = false;
 723                 }
 724         }
 725         else if (CurrSignalStrength > -47 && (CurrRetryRate < 50))
 726         {
 727                 //2For High Power
 728                 //
 729                 // Added by Roger, 2007.04.09.
 730                 // Return to highest data rate, if signal strength is good enough.
 731                 // SignalStrength threshold(-50dbm) is for RTL8186.
 732                 // Revise SignalStrength threshold to -51dbm.
 733                 //
 734                 // Also need to check retry rate for safety, by Bruce, 2007-06-05.
 735                 if(priv->CurrentOperaRate != priv->ieee80211->current_network.HighestOperaRate )
 736                 {
 737                         bTryUp = true;
 738                         // Upgrade Tx Rate directly.
 739                         priv->TryupingCount += TryUpTh;
 740                 }
 741 //              printk("case2: StaRateAdaptive87SE: Power(%d) is high enough!!. \n", CurrSignalStrength);
 742
 743         }
 744         else if(CurrTxokCnt > 9 && CurrTxokCnt< 100 && CurrRetryRate >= 600)
 745         {
 746                 //2 For Serious Retry
 747                 //
 748                 // Traffic is not busy but our Tx retry is serious.
 749                 //
 750                 bTryDown = true;
 751                 // Let Rate Mechanism to degrade tx rate directly.
 752                 priv->TryDownCountLowData += TryDownTh;
 753 //              printk("case3: RA: Tx Retry is serious. Degrade Tx Rate to %d directly...\n", priv->CurrentOperaRate);
 754         }
 755         else if ( priv->CurrentOperaRate == 108 )
 756         {
 757                 //2For 54Mbps
 758                 // Air Link
 759                 if ( (CurrRetryRate>26)&&(priv->LastRetryRate>25))
 760 //              if ( (CurrRetryRate>40)&&(priv->LastRetryRate>39))
 761                 {
 762                         //Down to rate 48Mbps.
 763                         bTryDown = true;
 764                 }
 765                 // Cable Link
 766                 else if ( (CurrRetryRate>17)&&(priv->LastRetryRate>16) && (CurrSignalStrength > -72))
 767 //              else if ( (CurrRetryRate>17)&&(priv->LastRetryRate>16) && (CurrSignalStrength > -72))
 768                 {
 769                         //Down to rate 48Mbps.
 770                         bTryDown = true;
 771                 }
 772
 773                 if(bTryDown && (CurrSignalStrength < -75)) //cable link
 774                 {
 775                         priv->TryDownCountLowData += TryDownTh;
 776                 }
 777                 //printk("case4---54M \n");
 778
 779         }
 780         else if ( priv->CurrentOperaRate == 96 )
 781         {
 782                 //2For 48Mbps
 783                 //Air Link
 784                 if ( ((CurrRetryRate>48) && (priv->LastRetryRate>47)))
 785 //              if ( ((CurrRetryRate>65) && (priv->LastRetryRate>64)))
 786
 787                 {
 788                         //Down to rate 36Mbps.
 789                         bTryDown = true;
 790                 }
 791                 //Cable Link
 792                 else if ( ((CurrRetryRate>21) && (priv->LastRetryRate>20)) && (CurrSignalStrength > -74))
 793                 {
 794                         //Down to rate 36Mbps.
 795                         bTryDown = true;
 796                 }
 797                 else if((CurrRetryRate>  (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
 798 //              else if((CurrRetryRate>  (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
 799                 {
 800                         bTryDown = true;
 801                         priv->TryDownCountLowData += TryDownTh;
 802                 }
 803                 else if ( (CurrRetryRate<8) && (priv->LastRetryRate<8) ) //TO DO: need to consider (RSSI)
 804 //              else if ( (CurrRetryRate<28) && (priv->LastRetryRate<8) )
 805                 {
 806                         bTryUp = true;
 807                 }
 808
 809                 if(bTryDown && (CurrSignalStrength < -75))
 810                 {
 811                         priv->TryDownCountLowData += TryDownTh;
 812                 }
 813                 //printk("case5---48M \n");
 814         }
 815         else if ( priv->CurrentOperaRate == 72 )
 816         {
 817                 //2For 36Mbps
 818                 if ( (CurrRetryRate>43) && (priv->LastRetryRate>41))
 819 //              if ( (CurrRetryRate>60) && (priv->LastRetryRate>59))
 820                 {
 821                         //Down to rate 24Mbps.
 822                         bTryDown = true;
 823                 }
 824                 else if((CurrRetryRate>  (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
 825 //              else if((CurrRetryRate>  (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
 826                 {
 827                         bTryDown = true;
 828                         priv->TryDownCountLowData += TryDownTh;
 829                 }
 830                 else if ( (CurrRetryRate<15) &&  (priv->LastRetryRate<16)) //TO DO: need to consider (RSSI)
 831 //              else if ( (CurrRetryRate<35) &&  (priv->LastRetryRate<36))
 832                 {
 833                         bTryUp = true;
 834                 }
 835
 836                 if(bTryDown && (CurrSignalStrength < -80))
 837                 {
 838                         priv->TryDownCountLowData += TryDownTh;
 839                 }
 840                 //printk("case6---36M \n");
 841         }
 842         else if ( priv->CurrentOperaRate == 48 )
 843         {
 844                 //2For 24Mbps
 845                 // Air Link
 846                 if ( ((CurrRetryRate>63) && (priv->LastRetryRate>62)))
 847 //              if ( ((CurrRetryRate>83) && (priv->LastRetryRate>82)))
 848                 {
 849                         //Down to rate 18Mbps.
 850                         bTryDown = true;
 851                 }
 852                 //Cable Link
 853                 else if ( ((CurrRetryRate>33) && (priv->LastRetryRate>32)) && (CurrSignalStrength > -82) )
 854 //               else if ( ((CurrRetryRate>50) && (priv->LastRetryRate>49)) && (CurrSignalStrength > -82) )
 855                 {
 856                         //Down to rate 18Mbps.
 857                         bTryDown = true;
 858                 }
 859                 else if((CurrRetryRate>  (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
 860 //              else if((CurrRetryRate>  (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
 861
 862                 {
 863                         bTryDown = true;
 864                         priv->TryDownCountLowData += TryDownTh;
 865                 }
 866                 else if ( (CurrRetryRate<20) && (priv->LastRetryRate<21)) //TO DO: need to consider (RSSI)
 867 //              else if ( (CurrRetryRate<40) && (priv->LastRetryRate<41))
 868                 {
 869                         bTryUp = true;
 870                 }
 871
 872                 if(bTryDown && (CurrSignalStrength < -82))
 873                 {
 874                         priv->TryDownCountLowData += TryDownTh;
 875                 }
 876                 //printk("case7---24M \n");
 877         }
 878         else if ( priv->CurrentOperaRate == 36 )
 879         {
 880                 //2For 18Mbps
 881                 // original (109, 109)
 882                 //[TRC Dell Lab] (90, 91), Isaiah 2008-02-18 23:24
 883                 //                           (85, 86), Isaiah 2008-02-18 24:00
 884                 if ( ((CurrRetryRate>85) && (priv->LastRetryRate>86)))
 885 //              if ( ((CurrRetryRate>115) && (priv->LastRetryRate>116)))
 886                 {
 887                         //Down to rate 11Mbps.
 888                         bTryDown = true;
 889                 }
 890                 //[TRC Dell Lab]  Isaiah 2008-02-18 23:24
 891                 else if((CurrRetryRate>  (priv->LastRetryRate + 50 )) && (priv->FailTxRateCount >2 ))
 892 //              else if((CurrRetryRate>  (priv->LastRetryRate + 70 )) && (priv->FailTxRateCount >2 ))
 893                 {
 894                         bTryDown = true;
 895                         priv->TryDownCountLowData += TryDownTh;
 896                 }
 897                 else if ( (CurrRetryRate<22) && (priv->LastRetryRate<23)) //TO DO: need to consider (RSSI)
 898 //              else if ( (CurrRetryRate<42) && (priv->LastRetryRate<43))
 899                 {
 900                         bTryUp = true;
 901                 }
 902                 //printk("case8---18M \n");
 903         }
 904         else if ( priv->CurrentOperaRate == 22 )
 905         {
 906                 //2For 11Mbps
 907                 if (CurrRetryRate>95)
 908 //              if (CurrRetryRate>155)
 909                 {
 910                         bTryDown = true;
 911                 }
 912                 else if ( (CurrRetryRate<29) && (priv->LastRetryRate <30) )//TO DO: need to consider (RSSI)
 913 //              else if ( (CurrRetryRate<49) && (priv->LastRetryRate <50) )
 914                         {
 915                         bTryUp = true;
 916                         }
 917                 //printk("case9---11M \n");
 918                 }
 919         else if ( priv->CurrentOperaRate == 11 )
 920         {
 921                 //2For 5.5Mbps
 922                 if (CurrRetryRate>149)
 923 //              if (CurrRetryRate>189)
 924                 {
 925                         bTryDown = true;
 926                 }
 927                 else if ( (CurrRetryRate<60) && (priv->LastRetryRate < 65))
 928 //              else if ( (CurrRetryRate<80) && (priv->LastRetryRate < 85))
 929
 930                         {
 931                         bTryUp = true;
 932                         }
 933                 //printk("case10---5.5M \n");
 934                 }
 935         else if ( priv->CurrentOperaRate == 4 )
 936         {
 937                 //2For 2 Mbps
 938                 if((CurrRetryRate>99) && (priv->LastRetryRate>99))
 939 //              if((CurrRetryRate>199) && (priv->LastRetryRate>199))
 940                 {
 941                         bTryDown = true;
 942                 }
 943                 else if ( (CurrRetryRate < 65) && (priv->LastRetryRate < 70))
 944 //              else if ( (CurrRetryRate < 85) && (priv->LastRetryRate < 90))
 945                 {
 946                         bTryUp = true;
 947                 }
 948                 //printk("case11---2M \n");
 949         }
 950         else if ( priv->CurrentOperaRate == 2 )
 951         {
 952                 //2For 1 Mbps
 953                 if( (CurrRetryRate<70) && (priv->LastRetryRate<75))
 954 //              if( (CurrRetryRate<90) && (priv->LastRetryRate<95))
 955                 {
 956                         bTryUp = true;
 957                 }
 958                 //printk("case12---1M \n");
 959         }
 960
 961         if(bTryUp && bTryDown)
 962         printk("StaRateAdaptive87B(): Tx Rate tried upping and downing simultaneously!\n");
 963
 964         //1 Test Upgrading Tx Rate
 965         // Sometimes the cause of the low throughput (high retry rate) is the compatibility between the AP and NIC.
 966         // To test if the upper rate may cause lower retry rate, this mechanism randomly occurs to test upgrading tx rate.
 967         if(!bTryUp && !bTryDown && (priv->TryupingCount == 0) && (priv->TryDownCountLowData == 0)
 968                 && priv->CurrentOperaRate != priv->ieee80211->current_network.HighestOperaRate && priv->FailTxRateCount < 2)
 969         {
 970                 if(jiffies% (CurrRetryRate + 101) == 0)
 971                 {
 972                         bTryUp = true;
 973                         priv->bTryuping = true;
 974                         //printk("StaRateAdaptive87SE(): Randomly try upgrading...\n");
 975                 }
 976         }
 977
 978         //1 Rate Mechanism
 979         if(bTryUp)
 980         {
 981                 priv->TryupingCount++;
 982                 priv->TryDownCountLowData = 0;
 983
 984                 {
 985 //                      printk("UP: pHalData->TryupingCount = %d\n", priv->TryupingCount);
 986 //                      printk("UP: TryUpTh(%d)+ (FailTxRateCount(%d))^2 =%d\n",
 987 //                              TryUpTh, priv->FailTxRateCount, (TryUpTh + priv->FailTxRateCount * priv->FailTxRateCount) );
 988 //                      printk("UP: pHalData->bTryuping=%d\n",  priv->bTryuping);
 989
 990                 }
 991
 992                 //
 993                 // Check more times if we need to upgrade indeed.
 994                 // Because the largest value of pHalData->TryupingCount is 0xFFFF and
 995                 // the largest value of pHalData->FailTxRateCount is 0x14,
 996                 // this condition will be satisfied at most every 2 min.
 997                 //
 998
 999                 if((priv->TryupingCount > (TryUpTh + priv->FailTxRateCount * priv->FailTxRateCount)) ||
1000                         (CurrSignalStrength > priv->LastFailTxRateSS) || priv->bTryuping)
1001                 {
1002                         priv->TryupingCount = 0;
1003                         //
1004                         // When transfering from CCK to OFDM, DIG is an important issue.
1005                         //
1006                         if(priv->CurrentOperaRate == 22)
1007                                 bUpdateInitialGain = true;
1008
1009                         // The difference in throughput between 48Mbps and 36Mbps is 8M.
1010                         // So, we must be carefully in this rate scale. Isaiah 2008-02-15.
1011                         //
1012                         if(  ((priv->CurrentOperaRate == 72) || (priv->CurrentOperaRate == 48) || (priv->CurrentOperaRate == 36)) &&
1013                                 (priv->FailTxRateCount > 2) )
1014                                 priv->RateAdaptivePeriod= (RATE_ADAPTIVE_TIMER_PERIOD/2);
1015
1016                         // (1)To avoid upgrade frequently to the fail tx rate, add the FailTxRateCount into the threshold.
1017                         // (2)If the signal strength is increased, it may be able to upgrade.
1018
1019                         priv->CurrentOperaRate = GetUpgradeTxRate(dev, priv->CurrentOperaRate);
1020 //                      printk("StaRateAdaptive87SE(): Upgrade Tx Rate to %d\n", priv->CurrentOperaRate);
1021
1022                         //[TRC Dell Lab] Bypass 12/9/6, Isaiah 2008-02-18 20:00
1023                         if(priv->CurrentOperaRate ==36)
1024                         {
1025                                 priv->bUpdateARFR=true;
1026                                 write_nic_word(dev, ARFR, 0x0F8F); //bypass 12/9/6
1027 //                              printk("UP: ARFR=0xF8F\n");
1028                         }
1029                         else if(priv->bUpdateARFR)
1030                         {
1031                                 priv->bUpdateARFR=false;
1032                                 write_nic_word(dev, ARFR, 0x0FFF); //set 1M ~ 54Mbps.
1033 //                              printk("UP: ARFR=0xFFF\n");
1034                         }
1035
1036                         // Update Fail Tx rate and count.
1037                         if(priv->LastFailTxRate != priv->CurrentOperaRate)
1038                         {
1039                                 priv->LastFailTxRate = priv->CurrentOperaRate;
1040                                 priv->FailTxRateCount = 0;
1041                                 priv->LastFailTxRateSS = -200; // Set lowest power.
1042                         }
1043                 }
1044         }
1045         else
1046         {
1047                 if(priv->TryupingCount > 0)
1048                         priv->TryupingCount --;
1049         }
1050
1051         if(bTryDown)
1052         {
1053                 priv->TryDownCountLowData++;
1054                 priv->TryupingCount = 0;
1055                 {
1056 //                      printk("DN: pHalData->TryDownCountLowData = %d\n",priv->TryDownCountLowData);
1057 //                      printk("DN: TryDownTh =%d\n", TryDownTh);
1058 //                      printk("DN: pHalData->bTryuping=%d\n",  priv->bTryuping);
1059                 }
1060
1061                 //Check if Tx rate can be degraded or Test trying upgrading should fallback.
1062                 if(priv->TryDownCountLowData > TryDownTh || priv->bTryuping)
1063                 {
1064                         priv->TryDownCountLowData = 0;
1065                         priv->bTryuping = false;
1066                         // Update fail information.
1067                         if(priv->LastFailTxRate == priv->CurrentOperaRate)
1068                         {
1069                                 priv->FailTxRateCount ++;
1070                                 // Record the Tx fail rate signal strength.
1071                                 if(CurrSignalStrength > priv->LastFailTxRateSS)
1072                                 {
1073                                         priv->LastFailTxRateSS = CurrSignalStrength;
1074                                 }
1075                         }
1076                         else
1077                         {
1078                                 priv->LastFailTxRate = priv->CurrentOperaRate;
1079                                 priv->FailTxRateCount = 1;
1080                                 priv->LastFailTxRateSS = CurrSignalStrength;
1081                         }
1082                         priv->CurrentOperaRate = GetDegradeTxRate(dev, priv->CurrentOperaRate);
1083
1084                         // Reduce chariot training time at weak signal strength situation. SD3 ED demand.
1085                         //[TRC Dell Lab] Revise Signal Threshold from -75 to -80 , Isaiah 2008-02-18 20:00
1086                         if( (CurrSignalStrength < -80) && (priv->CurrentOperaRate > 72 ))
1087                         {
1088                                 priv->CurrentOperaRate = 72;
1089 //                              printk("DN: weak signal strength (%d), degrade to 36Mbps\n", CurrSignalStrength);
1090                         }
1091
1092                         //[TRC Dell Lab] Bypass 12/9/6, Isaiah 2008-02-18 20:00
1093                         if(priv->CurrentOperaRate ==36)
1094                         {
1095                                 priv->bUpdateARFR=true;
1096                                 write_nic_word(dev, ARFR, 0x0F8F); //bypass 12/9/6
1097 //                              printk("DN: ARFR=0xF8F\n");
1098                         }
1099                         else if(priv->bUpdateARFR)
1100                         {
1101                                 priv->bUpdateARFR=false;
1102                                 write_nic_word(dev, ARFR, 0x0FFF); //set 1M ~ 54Mbps.
1103 //                              printk("DN: ARFR=0xFFF\n");
1104                         }
1105
1106                         //
1107                         // When it is CCK rate, it may need to update initial gain to receive lower power packets.
1108                         //
1109                         if(MgntIsCckRate(priv->CurrentOperaRate))
1110                         {
1111                                 bUpdateInitialGain = true;
1112                         }
1113 //                      printk("StaRateAdaptive87SE(): Degrade Tx Rate to %d\n", priv->CurrentOperaRate);
1114                 }
1115         }
1116         else
1117         {
1118                 if(priv->TryDownCountLowData > 0)
1119                         priv->TryDownCountLowData --;
1120         }
1121
1122         // Keep the Tx fail rate count to equal to 0x15 at most.
1123         // Reduce the fail count at least to 10 sec if tx rate is tending stable.
1124         if(priv->FailTxRateCount >= 0x15 ||
1125                 (!bTryUp && !bTryDown && priv->TryDownCountLowData == 0 && priv->TryupingCount && priv->FailTxRateCount > 0x6))
1126         {
1127                 priv->FailTxRateCount --;
1128         }
1129
1130
1131         OfdmTxPwrIdx  = priv->chtxpwr_ofdm[priv->ieee80211->current_network.channel];
1132         CckTxPwrIdx  = priv->chtxpwr[priv->ieee80211->current_network.channel];
1133
1134         //[TRC Dell Lab] Mac0x9e increase 2 level in 36M~18M situation, Isaiah 2008-02-18 24:00
1135         if((priv->CurrentOperaRate < 96) &&(priv->CurrentOperaRate > 22))
1136         {
1137                 u1bCck = read_nic_byte(dev, CCK_TXAGC);
1138                 u1bOfdm = read_nic_byte(dev, OFDM_TXAGC);
1139
1140                 // case 1: Never enter High power
1141                 if(u1bCck == CckTxPwrIdx )
1142                 {
1143                         if(u1bOfdm != (OfdmTxPwrIdx+2) )
1144                         {
1145                         priv->bEnhanceTxPwr= true;
1146                         u1bOfdm = ((u1bOfdm+2) > 35) ? 35: (u1bOfdm+2);
1147                         write_nic_byte(dev, OFDM_TXAGC, u1bOfdm);
1148 //                      printk("Enhance OFDM_TXAGC : +++++ u1bOfdm= 0x%x\n", u1bOfdm);
1149                         }
1150                 }
1151                 // case 2: enter high power
1152                 else if(u1bCck < CckTxPwrIdx)
1153                 {
1154                         if(!priv->bEnhanceTxPwr)
1155                         {
1156                                 priv->bEnhanceTxPwr= true;
1157                                 u1bOfdm = ((u1bOfdm+2) > 35) ? 35: (u1bOfdm+2);
1158                                 write_nic_byte(dev, OFDM_TXAGC, u1bOfdm);
1159                                 //RT_TRACE(COMP_RATE, DBG_TRACE, ("Enhance OFDM_TXAGC(2) : +++++ u1bOfdm= 0x%x\n", u1bOfdm));
1160                         }
1161                 }
1162         }
1163         else if(priv->bEnhanceTxPwr)  //54/48/11/5.5/2/1
1164         {
1165                 u1bCck = read_nic_byte(dev, CCK_TXAGC);
1166                 u1bOfdm = read_nic_byte(dev, OFDM_TXAGC);
1167
1168                 // case 1: Never enter High power
1169                 if(u1bCck == CckTxPwrIdx )
1170                 {
1171                 priv->bEnhanceTxPwr= false;
1172                 write_nic_byte(dev, OFDM_TXAGC, OfdmTxPwrIdx);
1173                 //printk("Recover OFDM_TXAGC : ===== u1bOfdm= 0x%x\n", OfdmTxPwrIdx);
1174                 }
1175                 // case 2: enter high power
1176                 else if(u1bCck < CckTxPwrIdx)
1177                 {
1178                         priv->bEnhanceTxPwr= false;
1179                         u1bOfdm = ((u1bOfdm-2) > 0) ? (u1bOfdm-2): 0;
1180                         write_nic_byte(dev, OFDM_TXAGC, u1bOfdm);
1181                         //RT_TRACE(COMP_RATE, DBG_TRACE, ("Recover OFDM_TXAGC(2): ===== u1bOfdm= 0x%x\n", u1bOfdm));
1182
1183                 }
1184         }
1185
1186         //
1187         // We need update initial gain when we set tx rate "from OFDM to CCK" or
1188         // "from CCK to OFDM".
1189         //
1190 SetInitialGain:
1191         if(bUpdateInitialGain)
1192         {
1193                 if(MgntIsCckRate(priv->CurrentOperaRate)) // CCK
1194                 {
1195                         if(priv->InitialGain > priv->RegBModeGainStage)
1196                         {
1197                                 priv->InitialGainBackUp= priv->InitialGain;
1198
1199                                 if(CurrSignalStrength < -85) // Low power, OFDM [0x17] = 26.
1200                                 {
1201                                         //SD3 SYs suggest that CurrSignalStrength < -65, ofdm 0x17=26.
1202                                         priv->InitialGain = priv->RegBModeGainStage;
1203                                 }
1204                                 else if(priv->InitialGain > priv->RegBModeGainStage + 1)
1205                                 {
1206                                         priv->InitialGain -= 2;
1207                                 }
1208                                 else
1209                                 {
1210                                         priv->InitialGain --;
1211                                 }
1212                                 printk("StaRateAdaptive87SE(): update init_gain to index %d for date rate %d\n",priv->InitialGain, priv->CurrentOperaRate);
1213                                 UpdateInitialGain(dev);
1214                         }
1215                 }
1216                 else // OFDM
1217                 {
1218                         if(priv->InitialGain < 4)
1219                         {
1220                                 priv->InitialGainBackUp= priv->InitialGain;
1221
1222                                 priv->InitialGain ++;
1223                                 printk("StaRateAdaptive87SE(): update init_gain to index %d for date rate %d\n",priv->InitialGain, priv->CurrentOperaRate);
1224                                 UpdateInitialGain(dev);
1225                         }
1226                 }
1227         }
1228
1229         //Record the related info
1230         priv->LastRetryRate = CurrRetryRate;
1231         priv->LastTxThroughput = TxThroughput;
1232         priv->ieee80211->rate = priv->CurrentOperaRate * 5;
1233 }
1234
1235 void rtl8180_rate_adapter(struct work_struct * work)
1236 {
1237         struct delayed_work *dwork = to_delayed_work(work);
1238         struct ieee80211_device *ieee = container_of(dwork,struct ieee80211_device,rate_adapter_wq);
1239         struct net_device *dev = ieee->dev;
1240         //struct r8180_priv *priv = ieee80211_priv(dev);
1241 //    DMESG("---->rtl8180_rate_adapter");
1242         StaRateAdaptive87SE(dev);
1243 //   DMESG("<----rtl8180_rate_adapter");
1244 }
1245 void timer_rate_adaptive(unsigned long data)
1246 {
1247         struct r8180_priv* priv = ieee80211_priv((struct net_device *)data);
1248         //DMESG("---->timer_rate_adaptive()\n");
1249         if(!priv->up)
1250         {
1251 //              DMESG("<----timer_rate_adaptive():driver is not up!\n");
1252                 return;
1253         }
1254         if((priv->ieee80211->iw_mode != IW_MODE_MASTER)
1255                         && (priv->ieee80211->state == IEEE80211_LINKED) &&
1256                         (priv->ForcedDataRate == 0) )
1257         {
1258 //      DMESG("timer_rate_adaptive():schedule rate_adapter_wq\n");
1259                 queue_work(priv->ieee80211->wq, (void *)&priv->ieee80211->rate_adapter_wq);
1260 //              StaRateAdaptive87SE((struct net_device *)data);
1261         }
1262         priv->rateadapter_timer.expires = jiffies + MSECS(priv->RateAdaptivePeriod);
1263         add_timer(&priv->rateadapter_timer);
1264         //DMESG("<----timer_rate_adaptive()\n");
1265 }
1266 //by amy 080312}
1267 void
1268 SwAntennaDiversityRxOk8185(
1269         struct net_device *dev,
1270         u8 SignalStrength
1271         )
1272 {
1273         struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1274
1275 //      printk("+SwAntennaDiversityRxOk8185: RxSs: %d\n", SignalStrength);
1276
1277         priv->AdRxOkCnt++;
1278
1279         if( priv->AdRxSignalStrength != -1)
1280         {
1281                 priv->AdRxSignalStrength = ((priv->AdRxSignalStrength*7) + (SignalStrength*3)) / 10;
1282         }
1283         else
1284         { // Initialization case.
1285                 priv->AdRxSignalStrength = SignalStrength;
1286         }
1287 //{+by amy 080312
1288         if( priv->LastRxPktAntenna ) //Main antenna.
1289                 priv->AdMainAntennaRxOkCnt++;
1290         else     // Aux antenna.
1291                 priv->AdAuxAntennaRxOkCnt++;
1292 //+by amy 080312
1293 //      printk("-SwAntennaDiversityRxOk8185: AdRxOkCnt: %d AdRxSignalStrength: %d\n", priv->AdRxOkCnt, priv->AdRxSignalStrength);
1294 }
1295 //
1296 //      Description:
1297 //              Change Antenna Switch.
1298 //
1299 bool
1300 SetAntenna8185(
1301         struct net_device *dev,
1302         u8              u1bAntennaIndex
1303         )
1304 {
1305         struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1306         bool bAntennaSwitched = false;
1307
1308 //      printk("+SetAntenna8185(): Antenna is switching to: %d \n", u1bAntennaIndex);
1309
1310         switch(u1bAntennaIndex)
1311         {
1312         case 0:
1313                 switch(priv->rf_chip)
1314                 {
1315                 case RF_ZEBRA2:
1316                 case RF_ZEBRA4:
1317                         // Mac register, main antenna
1318                         write_nic_byte(dev, ANTSEL, 0x03);
1319                         //base band
1320                         write_phy_cck(dev,0x11, 0x9b); // Config CCK RX antenna.
1321                         write_phy_ofdm(dev, 0x0d, 0x5c); // Config OFDM RX antenna.
1322
1323
1324                         bAntennaSwitched = true;
1325                         break;
1326
1327                 default:
1328                         printk("SetAntenna8185: unknown RFChipID(%d)\n", priv->rf_chip);
1329                         break;
1330                 }
1331                 break;
1332
1333         case 1:
1334                 switch(priv->rf_chip)
1335                 {
1336                 case RF_ZEBRA2:
1337                 case RF_ZEBRA4:
1338                         // Mac register, aux antenna
1339                         write_nic_byte(dev, ANTSEL, 0x00);
1340                         //base band
1341                         write_phy_cck(dev, 0x11, 0xbb); // Config CCK RX antenna.
1342                         write_phy_ofdm(dev, 0x0d, 0x54); // Config OFDM RX antenna.
1343
1344                         bAntennaSwitched = true;
1345                         break;
1346
1347                 default:
1348                         printk("SetAntenna8185: unknown RFChipID(%d)\n", priv->rf_chip);
1349                         break;
1350                 }
1351                 break;
1352
1353         default:
1354                 printk("SetAntenna8185: unknown u1bAntennaIndex(%d)\n", u1bAntennaIndex);
1355                 break;
1356         }
1357
1358         if(bAntennaSwitched)
1359         {
1360                 priv->CurrAntennaIndex = u1bAntennaIndex;
1361         }
1362
1363 //      printk("-SetAntenna8185(): return (%#X)\n", bAntennaSwitched);
1364
1365         return bAntennaSwitched;
1366 }
1367 //
1368 //      Description:
1369 //              Toggle Antenna switch.
1370 //
1371 bool
1372 SwitchAntenna(
1373         struct net_device *dev
1374         )
1375 {
1376         struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1377
1378         bool            bResult;
1379
1380         if(priv->CurrAntennaIndex == 0)
1381         {
1382                         bResult = SetAntenna8185(dev, 1);
1383 //by amy 080312
1384 //              printk("SwitchAntenna(): switching to antenna 1 ......\n");
1385 //              bResult = SetAntenna8185(dev, 1);//-by amy 080312
1386         }
1387         else
1388         {
1389                         bResult = SetAntenna8185(dev, 0);
1390 //by amy 080312
1391 //              printk("SwitchAntenna(): switching to antenna 0 ......\n");
1392 //              bResult = SetAntenna8185(dev, 0);//-by amy 080312
1393         }
1394
1395         return bResult;
1396 }
1397 //
1398 //      Description:
1399 //              Engine of SW Antenna Diversity mechanism.
1400 //              Since 8187 has no Tx part information,
1401 //              this implementation is only dependend on Rx part information.
1402 //
1403 //      2006.04.17, by rcnjko.
1404 //
1405 void
1406 SwAntennaDiversity(
1407         struct net_device *dev
1408         )
1409 {
1410         struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1411         bool   bSwCheckSS=false;
1412 //      printk("+SwAntennaDiversity(): CurrAntennaIndex: %d\n", priv->CurrAntennaIndex);
1413 //      printk("AdTickCount is %d\n",priv->AdTickCount);
1414 //by amy 080312
1415         if(bSwCheckSS)
1416         {
1417                 priv->AdTickCount++;
1418
1419                 printk("(1) AdTickCount: %d, AdCheckPeriod: %d\n",
1420                         priv->AdTickCount, priv->AdCheckPeriod);
1421                 printk("(2) AdRxSignalStrength: %ld, AdRxSsThreshold: %ld\n",
1422                         priv->AdRxSignalStrength, priv->AdRxSsThreshold);
1423         }
1424 //      priv->AdTickCount++;//-by amy 080312
1425
1426         // Case 1. No Link.
1427         if(priv->ieee80211->state != IEEE80211_LINKED)
1428         {
1429         //      printk("SwAntennaDiversity(): Case 1. No Link.\n");
1430
1431                 priv->bAdSwitchedChecking = false;
1432                 // I switch antenna here to prevent any one of antenna is broken before link established, 2006.04.18, by rcnjko..
1433                 SwitchAntenna(dev);
1434         }
1435         // Case 2. Linked but no packet received.
1436         else if(priv->AdRxOkCnt == 0)
1437         {
1438         //      printk("SwAntennaDiversity(): Case 2. Linked but no packet received.\n");
1439
1440                 priv->bAdSwitchedChecking = false;
1441                 SwitchAntenna(dev);
1442         }
1443         // Case 3. Evaluate last antenna switch action and undo it if necessary.
1444         else if(priv->bAdSwitchedChecking == true)
1445         {
1446         //      printk("SwAntennaDiversity(): Case 3. Evaluate last antenna switch action.\n");
1447
1448                 priv->bAdSwitchedChecking = false;
1449
1450                 // Adjust Rx signal strength threshold.
1451                 priv->AdRxSsThreshold = (priv->AdRxSignalStrength + priv->AdRxSsBeforeSwitched) / 2;
1452
1453                 priv->AdRxSsThreshold = (priv->AdRxSsThreshold > priv->AdMaxRxSsThreshold) ?
1454                                         priv->AdMaxRxSsThreshold: priv->AdRxSsThreshold;
1455                 if(priv->AdRxSignalStrength < priv->AdRxSsBeforeSwitched)
1456                 { // Rx signal strength is not improved after we swtiched antenna. => Swich back.
1457 //                      printk("SwAntennaDiversity(): Rx Signal Strength is not improved, CurrRxSs: %d, LastRxSs: %d\n",
1458 //                              priv->AdRxSignalStrength, priv->AdRxSsBeforeSwitched);
1459 //by amy 080312
1460                         // Increase Antenna Diversity checking period due to bad decision.
1461                         priv->AdCheckPeriod *= 2;
1462 //by amy 080312
1463                         // Increase Antenna Diversity checking period.
1464                         if(priv->AdCheckPeriod > priv->AdMaxCheckPeriod)
1465                                 priv->AdCheckPeriod = priv->AdMaxCheckPeriod;
1466
1467                         // Wrong deceision => switch back.
1468                         SwitchAntenna(dev);
1469                 }
1470                 else
1471                 { // Rx Signal Strength is improved.
1472 //                      printk("SwAntennaDiversity(): Rx Signal Strength is improved, CurrRxSs: %d, LastRxSs: %d\n",
1473 //                              priv->AdRxSignalStrength, priv->AdRxSsBeforeSwitched);
1474
1475                         // Reset Antenna Diversity checking period to its min value.
1476                         priv->AdCheckPeriod = priv->AdMinCheckPeriod;
1477                 }
1478
1479 //              printk("SwAntennaDiversity(): AdRxSsThreshold: %d, AdCheckPeriod: %d\n",
1480 //                      priv->AdRxSsThreshold, priv->AdCheckPeriod);
1481         }
1482         // Case 4. Evaluate if we shall switch antenna now.
1483         // Cause Table Speed is very fast in TRC Dell Lab, we check it every time.
1484         else// if(priv->AdTickCount >= priv->AdCheckPeriod)//-by amy 080312
1485         {
1486 //              printk("SwAntennaDiversity(): Case 4. Evaluate if we shall switch antenna now.\n");
1487
1488                 priv->AdTickCount = 0;
1489
1490                 //
1491                 // <Roger_Notes> We evaluate RxOk counts for each antenna first and than
1492                 // evaluate signal strength.
1493                 // The following operation can overcome the disability of CCA on both two antennas
1494                 // When signal strength was extremely low or high.
1495                 // 2008.01.30.
1496                 //
1497
1498                 //
1499                 // Evaluate RxOk count from each antenna if we shall switch default antenna now.
1500                 // Added by Roger, 2008.02.21.
1501 //{by amy 080312
1502                 if((priv->AdMainAntennaRxOkCnt < priv->AdAuxAntennaRxOkCnt)
1503                         && (priv->CurrAntennaIndex == 0))
1504                 { // We set Main antenna as default but RxOk count was less than Aux ones.
1505
1506         //              printk("SwAntennaDiversity(): Main antenna RxOK is poor, AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n",
1507         //                      priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt);
1508
1509                         // Switch to Aux antenna.
1510                         SwitchAntenna(dev);
1511                         priv->bHWAdSwitched = true;
1512                 }
1513                 else if((priv->AdAuxAntennaRxOkCnt < priv->AdMainAntennaRxOkCnt)
1514                         && (priv->CurrAntennaIndex == 1))
1515                 { // We set Aux antenna as default but RxOk count was less than Main ones.
1516
1517         //              printk("SwAntennaDiversity(): Aux antenna RxOK is poor, AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n",
1518         //                      priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt);
1519
1520                         // Switch to Main antenna.
1521                         SwitchAntenna(dev);
1522                         priv->bHWAdSwitched = true;
1523                 }
1524                 else
1525                 {// Default antenna is better.
1526
1527         //              printk("SwAntennaDiversity(): Default antenna is better., AdMainAntennaRxOkCnt: %d, AdAuxAntennaRxOkCnt: %d\n",
1528         //                      priv->AdMainAntennaRxOkCnt, priv->AdAuxAntennaRxOkCnt);
1529
1530                         // Still need to check current signal strength.
1531                         priv->bHWAdSwitched = false;
1532                 }
1533                 //
1534                 // <Roger_Notes> We evaluate Rx signal strength ONLY when default antenna
1535                 // didn't changed by HW evaluation.
1536                 // 2008.02.27.
1537                 //
1538                 // [TRC Dell Lab] SignalStrength is inaccuracy. Isaiah 2008-03-05
1539                 // For example, Throughput of aux is better than main antenna(about 10M v.s 2M),
1540                 // but AdRxSignalStrength is less than main.
1541                 // Our guess is that main antenna have lower throughput and get many change
1542                 // to receive more CCK packets(ex.Beacon) which have stronger SignalStrength.
1543                 //
1544                 if( (!priv->bHWAdSwitched) && (bSwCheckSS))
1545                 {
1546 //by amy 080312}
1547                 // Evaluate Rx signal strength if we shall switch antenna now.
1548                 if(priv->AdRxSignalStrength < priv->AdRxSsThreshold)
1549                 { // Rx signal strength is weak => Switch Antenna.
1550 //                      printk("SwAntennaDiversity(): Rx Signal Strength is weak, CurrRxSs: %d, RxSsThreshold: %d\n",
1551 //                              priv->AdRxSignalStrength, priv->AdRxSsThreshold);
1552
1553                         priv->AdRxSsBeforeSwitched = priv->AdRxSignalStrength;
1554                         priv->bAdSwitchedChecking = true;
1555
1556                         SwitchAntenna(dev);
1557                 }
1558                 else
1559                 { // Rx signal strength is OK.
1560 //                      printk("SwAntennaDiversity(): Rx Signal Strength is OK, CurrRxSs: %d, RxSsThreshold: %d\n",
1561 //                              priv->AdRxSignalStrength, priv->AdRxSsThreshold);
1562
1563                         priv->bAdSwitchedChecking = false;
1564                         // Increase Rx signal strength threshold if necessary.
1565                         if(     (priv->AdRxSignalStrength > (priv->AdRxSsThreshold + 10)) && // Signal is much stronger than current threshold
1566                                 priv->AdRxSsThreshold <= priv->AdMaxRxSsThreshold) // Current threhold is not yet reach upper limit.
1567                         {
1568                                 priv->AdRxSsThreshold = (priv->AdRxSsThreshold + priv->AdRxSignalStrength) / 2;
1569                                 priv->AdRxSsThreshold = (priv->AdRxSsThreshold > priv->AdMaxRxSsThreshold) ?
1570                                                                                                 priv->AdMaxRxSsThreshold: priv->AdRxSsThreshold;//+by amy 080312
1571                         }
1572
1573                         // Reduce Antenna Diversity checking period if possible.
1574                         if( priv->AdCheckPeriod > priv->AdMinCheckPeriod )
1575                         {
1576                                 priv->AdCheckPeriod /= 2;
1577                         }
1578                 }
1579                 }
1580         }
1581 //by amy 080312
1582         // Reset antenna diversity Rx related statistics.
1583         priv->AdRxOkCnt = 0;
1584         priv->AdMainAntennaRxOkCnt = 0;
1585         priv->AdAuxAntennaRxOkCnt = 0;
1586 //by amy 080312
1587
1588 //      priv->AdRxOkCnt = 0;//-by amy 080312
1589
1590 //      printk("-SwAntennaDiversity()\n");
1591 }
1592
1593 //
1594 //      Description:
1595 //              Return TRUE if we shall perform Tx Power Tracking Mecahnism, FALSE otherwise.
1596 //
1597 bool
1598 CheckTxPwrTracking(     struct net_device *dev)
1599 {
1600         struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1601
1602         if(!priv->bTxPowerTrack)
1603         {
1604                 return false;
1605         }
1606
1607 //lzm reserved 080826
1608         //if(priv->bScanInProgress)
1609         //{
1610         //      return false;
1611         //}
1612
1613         //if 87SE is in High Power , don't do Tx Power Tracking. asked by SD3 ED. 2008-08-08 Isaiah
1614         if(priv->bToUpdateTxPwr)
1615         {
1616                 return false;
1617         }
1618
1619         return true;
1620 }
1621
1622
1623 //
1624 //      Description:
1625 //              Timer callback function of SW Antenna Diversity.
1626 //
1627 void
1628 SwAntennaDiversityTimerCallback(
1629         struct net_device *dev
1630         )
1631 {
1632         struct r8180_priv *priv = (struct r8180_priv *)ieee80211_priv(dev);
1633         RT_RF_POWER_STATE rtState;
1634
1635         //printk("+SwAntennaDiversityTimerCallback()\n");
1636
1637         //
1638         // We do NOT need to switch antenna while RF is off.
1639         // 2007.05.09, added by Roger.
1640         //
1641         rtState = priv->eRFPowerState;
1642         do{
1643                 if (rtState == eRfOff)
1644                 {
1645 //                      printk("SwAntennaDiversityTimer - RF is OFF.\n");
1646                         break;
1647                 }
1648                 else if (rtState == eRfSleep)
1649                 {
1650                         // Don't access BB/RF under Disable PLL situation.
1651                         //RT_TRACE((COMP_RF|COMP_ANTENNA), DBG_LOUD, ("SwAntennaDiversityTimerCallback(): RF is Sleep => skip it\n"));
1652                         break;
1653                 }
1654                 SwAntennaDiversity(dev);
1655
1656         }while(false);
1657
1658         if(priv->up)
1659         {
1660                 priv->SwAntennaDiversityTimer.expires = jiffies + MSECS(ANTENNA_DIVERSITY_TIMER_PERIOD);
1661                 add_timer(&priv->SwAntennaDiversityTimer);
1662         }
1663
1664         //printk("-SwAntennaDiversityTimerCallback()\n");
1665 }
1666