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/******************************************************************************
*
* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
******************************************************************************/
/* */
/* include files */
/* */
#include "odm_precomp.h"
static u8 odm_QueryRxPwrPercentage(s8 AntPower)
{
if ((AntPower <= -100) || (AntPower >= 20))
return 0;
else if (AntPower >= 0)
return 100;
else
return 100 + AntPower;
}
static s32 odm_SignalScaleMapping_92CSeries(struct dm_odm_t *pDM_Odm, s32 CurrSig)
{
s32 RetSig = 0;
if (CurrSig >= 51 && CurrSig <= 100)
RetSig = 100;
else if (CurrSig >= 41 && CurrSig <= 50)
RetSig = 80 + ((CurrSig - 40)*2);
else if (CurrSig >= 31 && CurrSig <= 40)
RetSig = 66 + (CurrSig - 30);
else if (CurrSig >= 21 && CurrSig <= 30)
RetSig = 54 + (CurrSig - 20);
else if (CurrSig >= 10 && CurrSig <= 20)
RetSig = 42 + (((CurrSig - 10) * 2) / 3);
else if (CurrSig >= 5 && CurrSig <= 9)
RetSig = 22 + (((CurrSig - 5) * 3) / 2);
else if (CurrSig >= 1 && CurrSig <= 4)
RetSig = 6 + (((CurrSig - 1) * 3) / 2);
else
RetSig = CurrSig;
return RetSig;
}
static s32 odm_SignalScaleMapping(struct dm_odm_t *pDM_Odm, s32 CurrSig)
{
return odm_SignalScaleMapping_92CSeries(pDM_Odm, CurrSig);
}
static u8
odm_EVMdbToPercentage(
s8 Value
)
{
/* */
/* -33dB~0dB to 0%~99% */
/* */
s8 ret_val;
ret_val = Value;
if (ret_val >= 0)
ret_val = 0;
if (ret_val <= -33)
ret_val = -33;
ret_val = 0 - ret_val;
ret_val *= 3;
if (ret_val == 99)
ret_val = 100;
return ret_val;
}
static void odm_RxPhyStatus92CSeries_Parsing(struct dm_odm_t *pDM_Odm,
struct phy_info *pPhyInfo,
u8 *pPhyStatus,
struct odm_packet_info *pPktinfo)
{
struct phy_status_rpt *pPhyStaRpt = (struct phy_status_rpt *)pPhyStatus;
u8 i, Max_spatial_stream;
s8 rx_pwr[4], rx_pwr_all = 0;
u8 EVM, PWDB_ALL = 0, PWDB_ALL_BT;
u8 RSSI, total_rssi = 0;
u8 isCCKrate = 0;
u8 rf_rx_num = 0;
u8 cck_highpwr = 0;
isCCKrate = (pPktinfo->Rate <= DESC92C_RATE11M) ? true : false;
pPhyInfo->RxMIMOSignalQuality[RF_PATH_A] = -1;
pPhyInfo->RxMIMOSignalQuality[RF_PATH_B] = -1;
if (isCCKrate) {
u8 report;
u8 cck_agc_rpt;
pDM_Odm->PhyDbgInfo.NumQryPhyStatusCCK++;
/* (1)Hardware does not provide RSSI for CCK */
/* (2)PWDB, Average PWDB cacluated by hardware (for rate adaptive) */
cck_highpwr = pDM_Odm->bCckHighPower;
cck_agc_rpt = pPhyStaRpt->cck_agc_rpt_ofdm_cfosho_a;
/* The RSSI formula should be modified according to the gain table */
if (!cck_highpwr) {
report = (cck_agc_rpt & 0xc0)>>6;
switch (report) {
/* Modify the RF RNA gain value to -40, -20, -2, 14 by Jenyu's suggestion */
/* Note: different RF with the different RNA gain. */
case 0x3:
rx_pwr_all = -46 - (cck_agc_rpt & 0x3e);
break;
case 0x2:
rx_pwr_all = -26 - (cck_agc_rpt & 0x3e);
break;
case 0x1:
rx_pwr_all = -12 - (cck_agc_rpt & 0x3e);
break;
case 0x0:
rx_pwr_all = 16 - (cck_agc_rpt & 0x3e);
break;
}
} else {
report = (cck_agc_rpt & 0x60)>>5;
switch (report) {
case 0x3:
rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f)<<1);
break;
case 0x2:
rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f)<<1);
break;
case 0x1:
rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f)<<1);
break;
case 0x0:
rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f)<<1);
break;
}
}
PWDB_ALL = odm_QueryRxPwrPercentage(rx_pwr_all);
/* Modification for ext-LNA board */
if (pDM_Odm->BoardType == ODM_BOARD_HIGHPWR) {
if ((cck_agc_rpt>>7) == 0) {
PWDB_ALL = (PWDB_ALL > 94) ? 100 : (PWDB_ALL+6);
} else {
if (PWDB_ALL > 38)
PWDB_ALL -= 16;
else
PWDB_ALL = (PWDB_ALL <= 16) ? (PWDB_ALL>>2) : (PWDB_ALL-12);
}
/* CCK modification */
if (PWDB_ALL > 25 && PWDB_ALL <= 60)
PWDB_ALL += 6;
} else { /* Modification for int-LNA board */
if (PWDB_ALL > 99)
PWDB_ALL -= 8;
else if (PWDB_ALL > 50 && PWDB_ALL <= 68)
PWDB_ALL += 4;
}
pPhyInfo->RxPWDBAll = PWDB_ALL;
pPhyInfo->BTRxRSSIPercentage = PWDB_ALL;
pPhyInfo->RecvSignalPower = rx_pwr_all;
/* (3) Get Signal Quality (EVM) */
if (pPktinfo->bPacketMatchBSSID) {
u8 SQ, SQ_rpt;
SQ_rpt = pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all;
if (SQ_rpt > 64)
SQ = 0;
else if (SQ_rpt < 20)
SQ = 100;
else
SQ = ((64-SQ_rpt) * 100) / 44;
pPhyInfo->SignalQuality = SQ;
pPhyInfo->RxMIMOSignalQuality[RF_PATH_A] = SQ;
pPhyInfo->RxMIMOSignalQuality[RF_PATH_B] = -1;
}
} else { /* is OFDM rate */
pDM_Odm->PhyDbgInfo.NumQryPhyStatusOFDM++;
/* (1)Get RSSI for HT rate */
for (i = RF_PATH_A; i < RF_PATH_MAX; i++) {
/* 2008/01/30 MH we will judge RF RX path now. */
if (pDM_Odm->RFPathRxEnable & BIT(i))
rf_rx_num++;
rx_pwr[i] = ((pPhyStaRpt->path_agc[i].gain & 0x3F)*2) - 110;
pPhyInfo->RxPwr[i] = rx_pwr[i];
/* Translate DBM to percentage. */
RSSI = odm_QueryRxPwrPercentage(rx_pwr[i]);
total_rssi += RSSI;
/* Modification for ext-LNA board */
if (pDM_Odm->BoardType == ODM_BOARD_HIGHPWR) {
if ((pPhyStaRpt->path_agc[i].trsw) == 1)
RSSI = (RSSI > 94) ? 100 : (RSSI+6);
else
RSSI = (RSSI <= 16) ? (RSSI>>3) : (RSSI-16);
if ((RSSI <= 34) && (RSSI >= 4))
RSSI -= 4;
}
pPhyInfo->RxMIMOSignalStrength[i] = (u8) RSSI;
/* Get Rx snr value in DB */
pPhyInfo->RxSNR[i] = pDM_Odm->PhyDbgInfo.RxSNRdB[i] = (s32)(pPhyStaRpt->path_rxsnr[i]/2);
}
/* (2)PWDB, Average PWDB cacluated by hardware (for rate adaptive) */
rx_pwr_all = (((pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all) >> 1) & 0x7f)-110;
PWDB_ALL = odm_QueryRxPwrPercentage(rx_pwr_all);
PWDB_ALL_BT = PWDB_ALL;
pPhyInfo->RxPWDBAll = PWDB_ALL;
pPhyInfo->BTRxRSSIPercentage = PWDB_ALL_BT;
pPhyInfo->RxPower = rx_pwr_all;
pPhyInfo->RecvSignalPower = rx_pwr_all;
/* (3)EVM of HT rate */
if (pPktinfo->Rate >= DESC92C_RATEMCS8 && pPktinfo->Rate <= DESC92C_RATEMCS15)
Max_spatial_stream = 2; /* both spatial stream make sense */
else
Max_spatial_stream = 1; /* only spatial stream 1 makes sense */
for (i = 0; i < Max_spatial_stream; i++) {
/* Do not use shift operation like "rx_evmX >>= 1" because the compilor of free build environment */
/* fill most significant bit to "zero" when doing shifting operation which may change a negative */
/* value to positive one, then the dbm value (which is supposed to be negative) is not correct anymore. */
EVM = odm_EVMdbToPercentage((pPhyStaRpt->stream_rxevm[i])); /* dbm */
if (pPktinfo->bPacketMatchBSSID) {
if (i == RF_PATH_A) {
/* Fill value in RFD, Get the first spatial stream only */
pPhyInfo->SignalQuality = (u8)(EVM & 0xff);
}
pPhyInfo->RxMIMOSignalQuality[i] = (u8)(EVM & 0xff);
}
}
}
/* UI BSS List signal strength(in percentage), make it good looking, from 0~100. */
/* It is assigned to the BSS List in GetValueFromBeaconOrProbeRsp(). */
if (isCCKrate) {
pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(pDM_Odm, PWDB_ALL));/* PWDB_ALL; */
} else {
if (rf_rx_num != 0)
pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(pDM_Odm, total_rssi /= rf_rx_num));
}
}
void odm_Init_RSSIForDM23a(struct dm_odm_t *pDM_Odm)
{
}
static void odm_Process_RSSIForDM(struct dm_odm_t *pDM_Odm,
struct phy_info *pPhyInfo,
struct odm_packet_info *pPktinfo)
{
s32 UndecoratedSmoothedPWDB, UndecoratedSmoothedCCK;
s32 UndecoratedSmoothedOFDM, RSSI_Ave;
u8 isCCKrate = 0;
u8 RSSI_max, RSSI_min, i;
u32 OFDM_pkt = 0;
u32 Weighting = 0;
struct sta_info *pEntry;
if (pPktinfo->StationID == 0xFF)
return;
pEntry = pDM_Odm->pODM_StaInfo[pPktinfo->StationID];
if (!pEntry)
return;
if ((!pPktinfo->bPacketMatchBSSID))
return;
isCCKrate = (pPktinfo->Rate <= DESC92C_RATE11M) ? true : false;
/* Smart Antenna Debug Message------------------*/
UndecoratedSmoothedCCK = pEntry->rssi_stat.UndecoratedSmoothedCCK;
UndecoratedSmoothedOFDM = pEntry->rssi_stat.UndecoratedSmoothedOFDM;
UndecoratedSmoothedPWDB = pEntry->rssi_stat.UndecoratedSmoothedPWDB;
if (pPktinfo->bPacketToSelf || pPktinfo->bPacketBeacon) {
if (!isCCKrate) { /* ofdm rate */
if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_B] == 0) {
RSSI_Ave = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
} else {
if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_A] > pPhyInfo->RxMIMOSignalStrength[RF_PATH_B]) {
RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
} else {
RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
}
if ((RSSI_max - RSSI_min) < 3)
RSSI_Ave = RSSI_max;
else if ((RSSI_max - RSSI_min) < 6)
RSSI_Ave = RSSI_max - 1;
else if ((RSSI_max - RSSI_min) < 10)
RSSI_Ave = RSSI_max - 2;
else
RSSI_Ave = RSSI_max - 3;
}
/* 1 Process OFDM RSSI */
if (UndecoratedSmoothedOFDM <= 0) {
/* initialize */
UndecoratedSmoothedOFDM = pPhyInfo->RxPWDBAll;
} else {
if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedOFDM) {
UndecoratedSmoothedOFDM =
(((UndecoratedSmoothedOFDM)*(Rx_Smooth_Factor-1)) +
(RSSI_Ave)) / (Rx_Smooth_Factor);
UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM + 1;
} else {
UndecoratedSmoothedOFDM =
(((UndecoratedSmoothedOFDM)*(Rx_Smooth_Factor-1)) +
(RSSI_Ave)) / (Rx_Smooth_Factor);
}
}
pEntry->rssi_stat.PacketMap =
(pEntry->rssi_stat.PacketMap<<1) | BIT(0);
} else {
RSSI_Ave = pPhyInfo->RxPWDBAll;
/* 1 Process CCK RSSI */
if (UndecoratedSmoothedCCK <= 0) {
/* initialize */
UndecoratedSmoothedCCK = pPhyInfo->RxPWDBAll;
} else {
if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedCCK) {
UndecoratedSmoothedCCK =
(((UndecoratedSmoothedCCK)*(Rx_Smooth_Factor-1)) +
(pPhyInfo->RxPWDBAll)) / (Rx_Smooth_Factor);
UndecoratedSmoothedCCK = UndecoratedSmoothedCCK + 1;
} else {
UndecoratedSmoothedCCK =
(((UndecoratedSmoothedCCK)*(Rx_Smooth_Factor-1)) +
(pPhyInfo->RxPWDBAll)) / (Rx_Smooth_Factor);
}
}
pEntry->rssi_stat.PacketMap = pEntry->rssi_stat.PacketMap<<1;
}
/* 2011.07.28 LukeLee: modified to prevent unstable CCK RSSI */
if (pEntry->rssi_stat.ValidBit >= 64)
pEntry->rssi_stat.ValidBit = 64;
else
pEntry->rssi_stat.ValidBit++;
for (i = 0; i < pEntry->rssi_stat.ValidBit; i++)
OFDM_pkt +=
(u8)(pEntry->rssi_stat.PacketMap>>i) & BIT(0);
if (pEntry->rssi_stat.ValidBit == 64) {
Weighting = ((OFDM_pkt<<4) > 64)?64:(OFDM_pkt<<4);
UndecoratedSmoothedPWDB = (Weighting*UndecoratedSmoothedOFDM+(64-Weighting)*UndecoratedSmoothedCCK)>>6;
} else {
if (pEntry->rssi_stat.ValidBit != 0)
UndecoratedSmoothedPWDB = (OFDM_pkt*UndecoratedSmoothedOFDM+(pEntry->rssi_stat.ValidBit-OFDM_pkt)*UndecoratedSmoothedCCK)/pEntry->rssi_stat.ValidBit;
else
UndecoratedSmoothedPWDB = 0;
}
pEntry->rssi_stat.UndecoratedSmoothedCCK = UndecoratedSmoothedCCK;
pEntry->rssi_stat.UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM;
pEntry->rssi_stat.UndecoratedSmoothedPWDB = UndecoratedSmoothedPWDB;
}
}
void ODM_PhyStatusQuery23a(struct dm_odm_t *pDM_Odm, struct phy_info *pPhyInfo,
u8 *pPhyStatus, struct odm_packet_info *pPktinfo)
{
odm_RxPhyStatus92CSeries_Parsing(pDM_Odm, pPhyInfo,
pPhyStatus, pPktinfo);
odm_Process_RSSIForDM(pDM_Odm, pPhyInfo, pPktinfo);
}
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