mirror of
https://github.com/lwfinger/rtl8188eu.git
synced 2025-02-16 19:32:07 +00:00
77d786b6e8
This version takes advantage of all the cleanups to the code. It has been modified to build on older kernels. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
354 lines
11 KiB
C
354 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 2007 - 2011 Realtek Corporation. */
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#include "../include/drv_types.h"
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static u8 odm_QueryRxPwrPercentage(s8 AntPower)
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{
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if ((AntPower <= -100) || (AntPower >= 20))
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return 0;
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else if (AntPower >= 0)
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return 100;
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else
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return 100 + AntPower;
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}
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static s32 odm_SignalScaleMapping(struct odm_dm_struct *dm_odm, s32 CurrSig)
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{
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s32 RetSig = 0;
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if (CurrSig >= 51 && CurrSig <= 100)
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RetSig = 100;
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else if (CurrSig >= 41 && CurrSig <= 50)
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RetSig = 80 + ((CurrSig - 40) * 2);
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else if (CurrSig >= 31 && CurrSig <= 40)
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RetSig = 66 + (CurrSig - 30);
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else if (CurrSig >= 21 && CurrSig <= 30)
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RetSig = 54 + (CurrSig - 20);
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else if (CurrSig >= 10 && CurrSig <= 20)
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RetSig = 42 + (((CurrSig - 10) * 2) / 3);
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else if (CurrSig >= 5 && CurrSig <= 9)
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RetSig = 22 + (((CurrSig - 5) * 3) / 2);
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else if (CurrSig >= 1 && CurrSig <= 4)
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RetSig = 6 + (((CurrSig - 1) * 3) / 2);
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else
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RetSig = CurrSig;
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return RetSig;
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}
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static u8 odm_evm_db_to_percentage(s8 value)
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{
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/* -33dB~0dB to 0%~99% */
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s8 ret_val = clamp(-value, 0, 33) * 3;
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if (ret_val == 99)
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ret_val = 100;
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return ret_val;
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}
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static void odm_RxPhyStatus92CSeries_Parsing(struct odm_dm_struct *dm_odm,
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struct phy_info *pPhyInfo,
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u8 *pPhyStatus,
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struct odm_per_pkt_info *pPktinfo,
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struct adapter *adapt)
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{
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u8 i, Max_spatial_stream;
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s8 rx_pwr[4], rx_pwr_all = 0;
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u8 EVM, PWDB_ALL = 0;
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u8 RSSI, total_rssi = 0;
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u8 isCCKrate = 0;
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u8 rf_rx_num = 0;
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u8 cck_highpwr = 0;
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u8 LNA_idx, VGA_idx;
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struct phy_status_rpt *pPhyStaRpt = (struct phy_status_rpt *)pPhyStatus;
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isCCKrate = ((pPktinfo->Rate >= DESC92C_RATE1M) && (pPktinfo->Rate <= DESC92C_RATE11M)) ? true : false;
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if (isCCKrate) {
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u8 cck_agc_rpt;
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/* (1)Hardware does not provide RSSI for CCK */
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/* (2)PWDB, Average PWDB cacluated by hardware (for rate adaptive) */
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cck_highpwr = dm_odm->bCckHighPower;
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cck_agc_rpt = pPhyStaRpt->cck_agc_rpt_ofdm_cfosho_a;
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/* 2011.11.28 LukeLee: 88E use different LNA & VGA gain table */
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/* The RSSI formula should be modified according to the gain table */
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/* In 88E, cck_highpwr is always set to 1 */
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LNA_idx = ((cck_agc_rpt & 0xE0) >> 5);
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VGA_idx = (cck_agc_rpt & 0x1F);
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switch (LNA_idx) {
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case 7:
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if (VGA_idx <= 27)
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rx_pwr_all = -100 + 2 * (27 - VGA_idx); /* VGA_idx = 27~2 */
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else
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rx_pwr_all = -100;
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break;
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case 6:
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rx_pwr_all = -48 + 2 * (2 - VGA_idx); /* VGA_idx = 2~0 */
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break;
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case 5:
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rx_pwr_all = -42 + 2 * (7 - VGA_idx); /* VGA_idx = 7~5 */
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break;
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case 4:
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rx_pwr_all = -36 + 2 * (7 - VGA_idx); /* VGA_idx = 7~4 */
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break;
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case 3:
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rx_pwr_all = -24 + 2 * (7 - VGA_idx); /* VGA_idx = 7~0 */
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break;
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case 2:
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if (cck_highpwr)
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rx_pwr_all = -12 + 2 * (5 - VGA_idx); /* VGA_idx = 5~0 */
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else
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rx_pwr_all = -6 + 2 * (5 - VGA_idx);
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break;
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case 1:
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rx_pwr_all = 8 - 2 * VGA_idx;
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break;
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case 0:
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rx_pwr_all = 14 - 2 * VGA_idx;
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break;
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default:
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break;
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}
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rx_pwr_all += 6;
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PWDB_ALL = odm_QueryRxPwrPercentage(rx_pwr_all);
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if (!cck_highpwr) {
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if (PWDB_ALL >= 80)
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PWDB_ALL = ((PWDB_ALL - 80) << 1) + ((PWDB_ALL - 80) >> 1) + 80;
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else if ((PWDB_ALL <= 78) && (PWDB_ALL >= 20))
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PWDB_ALL += 3;
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if (PWDB_ALL > 100)
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PWDB_ALL = 100;
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}
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pPhyInfo->RxPWDBAll = PWDB_ALL;
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pPhyInfo->recvpower = rx_pwr_all;
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/* (3) Get Signal Quality (EVM) */
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if (pPktinfo->bPacketMatchBSSID) {
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u8 SQ, SQ_rpt;
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if (pPhyInfo->RxPWDBAll > 40) {
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SQ = 100;
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} else {
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SQ_rpt = pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all;
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if (SQ_rpt > 64)
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SQ = 0;
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else if (SQ_rpt < 20)
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SQ = 100;
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else
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SQ = ((64 - SQ_rpt) * 100) / 44;
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}
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pPhyInfo->SignalQuality = SQ;
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}
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} else { /* is OFDM rate */
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/* (1)Get RSSI for HT rate */
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for (i = RF_PATH_A; i < RF_PATH_MAX; i++) {
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/* 2008/01/30 MH we will judge RF RX path now. */
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if (dm_odm->RFPathRxEnable & BIT(i))
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rf_rx_num++;
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rx_pwr[i] = ((pPhyStaRpt->path_agc[i].gain & 0x3F) * 2) - 110;
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if (i == RF_PATH_A)
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adapt->signal_strength = rx_pwr[i];
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pPhyInfo->RxPwr[i] = rx_pwr[i];
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/* Translate DBM to percentage. */
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RSSI = odm_QueryRxPwrPercentage(rx_pwr[i]);
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total_rssi += RSSI;
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pPhyInfo->RxMIMOSignalStrength[i] = (u8)RSSI;
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/* Get Rx snr value in DB */
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dm_odm->PhyDbgInfo.RxSNRdB[i] = (s32)(pPhyStaRpt->path_rxsnr[i] / 2);
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}
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/* (2)PWDB, Average PWDB cacluated by hardware (for rate adaptive) */
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rx_pwr_all = (((pPhyStaRpt->cck_sig_qual_ofdm_pwdb_all) >> 1) & 0x7f) - 110;
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PWDB_ALL = odm_QueryRxPwrPercentage(rx_pwr_all);
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pPhyInfo->RxPWDBAll = PWDB_ALL;
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pPhyInfo->RxPower = rx_pwr_all;
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pPhyInfo->recvpower = rx_pwr_all;
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/* (3)EVM of HT rate */
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if (pPktinfo->Rate >= DESC92C_RATEMCS8 && pPktinfo->Rate <= DESC92C_RATEMCS15)
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Max_spatial_stream = 2; /* both spatial stream make sense */
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else
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Max_spatial_stream = 1; /* only spatial stream 1 makes sense */
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for (i = 0; i < Max_spatial_stream; i++) {
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/* Do not use shift operation like "rx_evmX >>= 1" because the compilor of free build environment */
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/* fill most significant bit to "zero" when doing shifting operation which may change a negative */
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/* value to positive one, then the dbm value (which is supposed to be negative) is not correct anymore. */
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EVM = odm_evm_db_to_percentage((pPhyStaRpt->stream_rxevm[i])); /* dbm */
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if (pPktinfo->bPacketMatchBSSID) {
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if (i == RF_PATH_A) /* Fill value in RFD, Get the first spatial stream only */
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pPhyInfo->SignalQuality = (u8)(EVM & 0xff);
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}
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}
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}
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/* UI BSS List signal strength(in percentage), make it good looking, from 0~100. */
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/* It is assigned to the BSS List in GetValueFromBeaconOrProbeRsp(). */
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if (isCCKrate) {
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pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(dm_odm, PWDB_ALL));/* PWDB_ALL; */
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} else {
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if (rf_rx_num != 0)
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pPhyInfo->SignalStrength = (u8)(odm_SignalScaleMapping(dm_odm, total_rssi /= rf_rx_num));
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}
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/* For 88E HW Antenna Diversity */
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dm_odm->DM_FatTable.antsel_rx_keep_0 = pPhyStaRpt->ant_sel;
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dm_odm->DM_FatTable.antsel_rx_keep_1 = pPhyStaRpt->ant_sel_b;
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dm_odm->DM_FatTable.antsel_rx_keep_2 = pPhyStaRpt->antsel_rx_keep_2;
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}
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static void odm_Process_RSSIForDM(struct odm_dm_struct *dm_odm,
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struct phy_info *pPhyInfo,
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struct odm_per_pkt_info *pPktinfo)
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{
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s32 UndecoratedSmoothedPWDB, UndecoratedSmoothedCCK;
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s32 UndecoratedSmoothedOFDM, RSSI_Ave;
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u8 isCCKrate = 0;
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u8 RSSI_max, RSSI_min, i;
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u32 OFDM_pkt = 0;
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u32 Weighting = 0;
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struct sta_info *pEntry;
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u8 antsel_tr_mux;
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struct fast_ant_train *pDM_FatTable = &dm_odm->DM_FatTable;
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if (pPktinfo->StationID == 0xFF)
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return;
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pEntry = dm_odm->pODM_StaInfo[pPktinfo->StationID];
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if (!IS_STA_VALID(pEntry))
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return;
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if ((!pPktinfo->bPacketMatchBSSID))
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return;
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isCCKrate = ((pPktinfo->Rate >= DESC92C_RATE1M) && (pPktinfo->Rate <= DESC92C_RATE11M)) ? true : false;
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/* Smart Antenna Debug Message------------------ */
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if ((dm_odm->AntDivType == CG_TRX_HW_ANTDIV) || (dm_odm->AntDivType == CGCS_RX_HW_ANTDIV)) {
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if (pPktinfo->bPacketToSelf || pPktinfo->bPacketBeacon) {
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antsel_tr_mux = (pDM_FatTable->antsel_rx_keep_2 << 2) |
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(pDM_FatTable->antsel_rx_keep_1 << 1) | pDM_FatTable->antsel_rx_keep_0;
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ODM_AntselStatistics_88E(dm_odm, antsel_tr_mux, pPktinfo->StationID, pPhyInfo->RxPWDBAll);
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}
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}
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/* Smart Antenna Debug Message------------------ */
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UndecoratedSmoothedCCK = pEntry->rssi_stat.UndecoratedSmoothedCCK;
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UndecoratedSmoothedOFDM = pEntry->rssi_stat.UndecoratedSmoothedOFDM;
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UndecoratedSmoothedPWDB = pEntry->rssi_stat.UndecoratedSmoothedPWDB;
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if (pPktinfo->bPacketToSelf || pPktinfo->bPacketBeacon) {
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if (!isCCKrate) { /* ofdm rate */
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if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_B] == 0) {
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RSSI_Ave = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
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} else {
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if (pPhyInfo->RxMIMOSignalStrength[RF_PATH_A] > pPhyInfo->RxMIMOSignalStrength[RF_PATH_B]) {
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RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
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RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
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} else {
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RSSI_max = pPhyInfo->RxMIMOSignalStrength[RF_PATH_B];
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RSSI_min = pPhyInfo->RxMIMOSignalStrength[RF_PATH_A];
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}
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if ((RSSI_max - RSSI_min) < 3)
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RSSI_Ave = RSSI_max;
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else if ((RSSI_max - RSSI_min) < 6)
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RSSI_Ave = RSSI_max - 1;
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else if ((RSSI_max - RSSI_min) < 10)
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RSSI_Ave = RSSI_max - 2;
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else
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RSSI_Ave = RSSI_max - 3;
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}
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/* 1 Process OFDM RSSI */
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if (UndecoratedSmoothedOFDM <= 0) { /* initialize */
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UndecoratedSmoothedOFDM = pPhyInfo->RxPWDBAll;
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} else {
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if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedOFDM) {
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UndecoratedSmoothedOFDM =
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(((UndecoratedSmoothedOFDM) * (Rx_Smooth_Factor - 1)) +
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(RSSI_Ave)) / (Rx_Smooth_Factor);
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UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM + 1;
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} else {
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UndecoratedSmoothedOFDM =
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(((UndecoratedSmoothedOFDM) * (Rx_Smooth_Factor - 1)) +
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(RSSI_Ave)) / (Rx_Smooth_Factor);
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}
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}
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pEntry->rssi_stat.PacketMap = (pEntry->rssi_stat.PacketMap << 1) | BIT(0);
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} else {
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RSSI_Ave = pPhyInfo->RxPWDBAll;
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/* 1 Process CCK RSSI */
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if (UndecoratedSmoothedCCK <= 0) { /* initialize */
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UndecoratedSmoothedCCK = pPhyInfo->RxPWDBAll;
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} else {
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if (pPhyInfo->RxPWDBAll > (u32)UndecoratedSmoothedCCK) {
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UndecoratedSmoothedCCK =
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((UndecoratedSmoothedCCK * (Rx_Smooth_Factor - 1)) +
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pPhyInfo->RxPWDBAll) / Rx_Smooth_Factor;
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UndecoratedSmoothedCCK = UndecoratedSmoothedCCK + 1;
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} else {
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UndecoratedSmoothedCCK =
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((UndecoratedSmoothedCCK * (Rx_Smooth_Factor - 1)) +
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pPhyInfo->RxPWDBAll) / Rx_Smooth_Factor;
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}
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}
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pEntry->rssi_stat.PacketMap = pEntry->rssi_stat.PacketMap << 1;
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}
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/* 2011.07.28 LukeLee: modified to prevent unstable CCK RSSI */
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if (pEntry->rssi_stat.ValidBit >= 64)
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pEntry->rssi_stat.ValidBit = 64;
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else
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pEntry->rssi_stat.ValidBit++;
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for (i = 0; i < pEntry->rssi_stat.ValidBit; i++)
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OFDM_pkt += (u8)(pEntry->rssi_stat.PacketMap >> i) & BIT(0);
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if (pEntry->rssi_stat.ValidBit == 64) {
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Weighting = ((OFDM_pkt << 4) > 64) ? 64 : (OFDM_pkt << 4);
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UndecoratedSmoothedPWDB = (Weighting * UndecoratedSmoothedOFDM + (64 - Weighting) * UndecoratedSmoothedCCK) >> 6;
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} else {
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if (pEntry->rssi_stat.ValidBit != 0)
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UndecoratedSmoothedPWDB = (OFDM_pkt * UndecoratedSmoothedOFDM +
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(pEntry->rssi_stat.ValidBit - OFDM_pkt) *
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UndecoratedSmoothedCCK) / pEntry->rssi_stat.ValidBit;
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else
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UndecoratedSmoothedPWDB = 0;
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}
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pEntry->rssi_stat.UndecoratedSmoothedCCK = UndecoratedSmoothedCCK;
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pEntry->rssi_stat.UndecoratedSmoothedOFDM = UndecoratedSmoothedOFDM;
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pEntry->rssi_stat.UndecoratedSmoothedPWDB = UndecoratedSmoothedPWDB;
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}
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}
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/* Endianness before calling this API */
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void ODM_PhyStatusQuery(struct odm_dm_struct *dm_odm,
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struct phy_info *pPhyInfo,
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u8 *pPhyStatus,
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struct odm_per_pkt_info *pPktinfo,
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struct adapter *adapt)
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{
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odm_RxPhyStatus92CSeries_Parsing(dm_odm, pPhyInfo, pPhyStatus, pPktinfo, adapt);
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odm_Process_RSSIForDM(dm_odm, pPhyInfo, pPktinfo);
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}
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enum HAL_STATUS ODM_ConfigRFWithHeaderFile(struct odm_dm_struct *dm_odm)
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{
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return ODM_ReadAndConfig_RadioA_1T_8188E(dm_odm);
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}
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