| /* |
| * Copyright (c) 2008 Atheros Communications Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include "core.h" |
| #include "hw.h" |
| #include "reg.h" |
| #include "phy.h" |
| |
| /* We can tune this as we go by monitoring really low values */ |
| #define ATH9K_NF_TOO_LOW -60 |
| |
| /* AR5416 may return very high value (like -31 dBm), in those cases the nf |
| * is incorrect and we should use the static NF value. Later we can try to |
| * find out why they are reporting these values */ |
| |
| static bool ath9k_hw_nf_in_range(struct ath_hal *ah, s16 nf) |
| { |
| if (nf > ATH9K_NF_TOO_LOW) { |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "noise floor value detected (%d) is " |
| "lower than what we think is a " |
| "reasonable value (%d)\n", |
| nf, ATH9K_NF_TOO_LOW); |
| return false; |
| } |
| return true; |
| } |
| |
| static int16_t ath9k_hw_get_nf_hist_mid(int16_t *nfCalBuffer) |
| { |
| int16_t nfval; |
| int16_t sort[ATH9K_NF_CAL_HIST_MAX]; |
| int i, j; |
| |
| for (i = 0; i < ATH9K_NF_CAL_HIST_MAX; i++) |
| sort[i] = nfCalBuffer[i]; |
| |
| for (i = 0; i < ATH9K_NF_CAL_HIST_MAX - 1; i++) { |
| for (j = 1; j < ATH9K_NF_CAL_HIST_MAX - i; j++) { |
| if (sort[j] > sort[j - 1]) { |
| nfval = sort[j]; |
| sort[j] = sort[j - 1]; |
| sort[j - 1] = nfval; |
| } |
| } |
| } |
| nfval = sort[(ATH9K_NF_CAL_HIST_MAX - 1) >> 1]; |
| |
| return nfval; |
| } |
| |
| static void ath9k_hw_update_nfcal_hist_buffer(struct ath9k_nfcal_hist *h, |
| int16_t *nfarray) |
| { |
| int i; |
| |
| for (i = 0; i < NUM_NF_READINGS; i++) { |
| h[i].nfCalBuffer[h[i].currIndex] = nfarray[i]; |
| |
| if (++h[i].currIndex >= ATH9K_NF_CAL_HIST_MAX) |
| h[i].currIndex = 0; |
| |
| if (h[i].invalidNFcount > 0) { |
| if (nfarray[i] < AR_PHY_CCA_MIN_BAD_VALUE || |
| nfarray[i] > AR_PHY_CCA_MAX_HIGH_VALUE) { |
| h[i].invalidNFcount = ATH9K_NF_CAL_HIST_MAX; |
| } else { |
| h[i].invalidNFcount--; |
| h[i].privNF = nfarray[i]; |
| } |
| } else { |
| h[i].privNF = |
| ath9k_hw_get_nf_hist_mid(h[i].nfCalBuffer); |
| } |
| } |
| return; |
| } |
| |
| static void ath9k_hw_do_getnf(struct ath_hal *ah, |
| int16_t nfarray[NUM_NF_READINGS]) |
| { |
| int16_t nf; |
| |
| if (AR_SREV_9280_10_OR_LATER(ah)) |
| nf = MS(REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR); |
| else |
| nf = MS(REG_READ(ah, AR_PHY_CCA), AR_PHY_MINCCA_PWR); |
| |
| if (nf & 0x100) |
| nf = 0 - ((nf ^ 0x1ff) + 1); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "NF calibrated [ctl] [chain 0] is %d\n", nf); |
| nfarray[0] = nf; |
| |
| if (!AR_SREV_9285(ah)) { |
| if (AR_SREV_9280_10_OR_LATER(ah)) |
| nf = MS(REG_READ(ah, AR_PHY_CH1_CCA), |
| AR9280_PHY_CH1_MINCCA_PWR); |
| else |
| nf = MS(REG_READ(ah, AR_PHY_CH1_CCA), |
| AR_PHY_CH1_MINCCA_PWR); |
| |
| if (nf & 0x100) |
| nf = 0 - ((nf ^ 0x1ff) + 1); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "NF calibrated [ctl] [chain 1] is %d\n", nf); |
| nfarray[1] = nf; |
| |
| if (!AR_SREV_9280(ah)) { |
| nf = MS(REG_READ(ah, AR_PHY_CH2_CCA), |
| AR_PHY_CH2_MINCCA_PWR); |
| if (nf & 0x100) |
| nf = 0 - ((nf ^ 0x1ff) + 1); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "NF calibrated [ctl] [chain 2] is %d\n", nf); |
| nfarray[2] = nf; |
| } |
| } |
| |
| if (AR_SREV_9280_10_OR_LATER(ah)) |
| nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), |
| AR9280_PHY_EXT_MINCCA_PWR); |
| else |
| nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), |
| AR_PHY_EXT_MINCCA_PWR); |
| |
| if (nf & 0x100) |
| nf = 0 - ((nf ^ 0x1ff) + 1); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "NF calibrated [ext] [chain 0] is %d\n", nf); |
| nfarray[3] = nf; |
| |
| if (!AR_SREV_9285(ah)) { |
| if (AR_SREV_9280_10_OR_LATER(ah)) |
| nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), |
| AR9280_PHY_CH1_EXT_MINCCA_PWR); |
| else |
| nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), |
| AR_PHY_CH1_EXT_MINCCA_PWR); |
| |
| if (nf & 0x100) |
| nf = 0 - ((nf ^ 0x1ff) + 1); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "NF calibrated [ext] [chain 1] is %d\n", nf); |
| nfarray[4] = nf; |
| |
| if (!AR_SREV_9280(ah)) { |
| nf = MS(REG_READ(ah, AR_PHY_CH2_EXT_CCA), |
| AR_PHY_CH2_EXT_MINCCA_PWR); |
| if (nf & 0x100) |
| nf = 0 - ((nf ^ 0x1ff) + 1); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "NF calibrated [ext] [chain 2] is %d\n", nf); |
| nfarray[5] = nf; |
| } |
| } |
| } |
| |
| static bool getNoiseFloorThresh(struct ath_hal *ah, |
| enum ieee80211_band band, |
| int16_t *nft) |
| { |
| switch (band) { |
| case IEEE80211_BAND_5GHZ: |
| *nft = (int8_t)ath9k_hw_get_eeprom(ah, EEP_NFTHRESH_5); |
| break; |
| case IEEE80211_BAND_2GHZ: |
| *nft = (int8_t)ath9k_hw_get_eeprom(ah, EEP_NFTHRESH_2); |
| break; |
| default: |
| BUG_ON(1); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static void ath9k_hw_setup_calibration(struct ath_hal *ah, |
| struct hal_cal_list *currCal) |
| { |
| REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(0), |
| AR_PHY_TIMING_CTRL4_IQCAL_LOG_COUNT_MAX, |
| currCal->calData->calCountMax); |
| |
| switch (currCal->calData->calType) { |
| case IQ_MISMATCH_CAL: |
| REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_IQ); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "starting IQ Mismatch Calibration\n"); |
| break; |
| case ADC_GAIN_CAL: |
| REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_GAIN); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "starting ADC Gain Calibration\n"); |
| break; |
| case ADC_DC_CAL: |
| REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_DC_PER); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "starting ADC DC Calibration\n"); |
| break; |
| case ADC_DC_INIT_CAL: |
| REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_DC_INIT); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "starting Init ADC DC Calibration\n"); |
| break; |
| } |
| |
| REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4(0), |
| AR_PHY_TIMING_CTRL4_DO_CAL); |
| } |
| |
| static void ath9k_hw_reset_calibration(struct ath_hal *ah, |
| struct hal_cal_list *currCal) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| int i; |
| |
| ath9k_hw_setup_calibration(ah, currCal); |
| |
| currCal->calState = CAL_RUNNING; |
| |
| for (i = 0; i < AR5416_MAX_CHAINS; i++) { |
| ahp->ah_Meas0.sign[i] = 0; |
| ahp->ah_Meas1.sign[i] = 0; |
| ahp->ah_Meas2.sign[i] = 0; |
| ahp->ah_Meas3.sign[i] = 0; |
| } |
| |
| ahp->ah_CalSamples = 0; |
| } |
| |
| static void ath9k_hw_per_calibration(struct ath_hal *ah, |
| struct ath9k_channel *ichan, |
| u8 rxchainmask, |
| struct hal_cal_list *currCal, |
| bool *isCalDone) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| |
| *isCalDone = false; |
| |
| if (currCal->calState == CAL_RUNNING) { |
| if (!(REG_READ(ah, AR_PHY_TIMING_CTRL4(0)) & |
| AR_PHY_TIMING_CTRL4_DO_CAL)) { |
| |
| currCal->calData->calCollect(ah); |
| ahp->ah_CalSamples++; |
| |
| if (ahp->ah_CalSamples >= currCal->calData->calNumSamples) { |
| int i, numChains = 0; |
| for (i = 0; i < AR5416_MAX_CHAINS; i++) { |
| if (rxchainmask & (1 << i)) |
| numChains++; |
| } |
| |
| currCal->calData->calPostProc(ah, numChains); |
| ichan->CalValid |= currCal->calData->calType; |
| currCal->calState = CAL_DONE; |
| *isCalDone = true; |
| } else { |
| ath9k_hw_setup_calibration(ah, currCal); |
| } |
| } |
| } else if (!(ichan->CalValid & currCal->calData->calType)) { |
| ath9k_hw_reset_calibration(ah, currCal); |
| } |
| } |
| |
| /* Assumes you are talking about the currently configured channel */ |
| static bool ath9k_hw_iscal_supported(struct ath_hal *ah, |
| enum hal_cal_types calType) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| struct ieee80211_conf *conf = &ah->ah_sc->hw->conf; |
| |
| switch (calType & ahp->ah_suppCals) { |
| case IQ_MISMATCH_CAL: /* Both 2 GHz and 5 GHz support OFDM */ |
| return true; |
| case ADC_GAIN_CAL: |
| case ADC_DC_CAL: |
| if (conf->channel->band == IEEE80211_BAND_5GHZ && |
| conf_is_ht20(conf)) |
| return true; |
| break; |
| } |
| return false; |
| } |
| |
| static void ath9k_hw_iqcal_collect(struct ath_hal *ah) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| int i; |
| |
| for (i = 0; i < AR5416_MAX_CHAINS; i++) { |
| ahp->ah_totalPowerMeasI[i] += |
| REG_READ(ah, AR_PHY_CAL_MEAS_0(i)); |
| ahp->ah_totalPowerMeasQ[i] += |
| REG_READ(ah, AR_PHY_CAL_MEAS_1(i)); |
| ahp->ah_totalIqCorrMeas[i] += |
| (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i)); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n", |
| ahp->ah_CalSamples, i, ahp->ah_totalPowerMeasI[i], |
| ahp->ah_totalPowerMeasQ[i], |
| ahp->ah_totalIqCorrMeas[i]); |
| } |
| } |
| |
| static void ath9k_hw_adc_gaincal_collect(struct ath_hal *ah) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| int i; |
| |
| for (i = 0; i < AR5416_MAX_CHAINS; i++) { |
| ahp->ah_totalAdcIOddPhase[i] += |
| REG_READ(ah, AR_PHY_CAL_MEAS_0(i)); |
| ahp->ah_totalAdcIEvenPhase[i] += |
| REG_READ(ah, AR_PHY_CAL_MEAS_1(i)); |
| ahp->ah_totalAdcQOddPhase[i] += |
| REG_READ(ah, AR_PHY_CAL_MEAS_2(i)); |
| ahp->ah_totalAdcQEvenPhase[i] += |
| REG_READ(ah, AR_PHY_CAL_MEAS_3(i)); |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "%d: Chn %d oddi=0x%08x; eveni=0x%08x; " |
| "oddq=0x%08x; evenq=0x%08x;\n", |
| ahp->ah_CalSamples, i, |
| ahp->ah_totalAdcIOddPhase[i], |
| ahp->ah_totalAdcIEvenPhase[i], |
| ahp->ah_totalAdcQOddPhase[i], |
| ahp->ah_totalAdcQEvenPhase[i]); |
| } |
| } |
| |
| static void ath9k_hw_adc_dccal_collect(struct ath_hal *ah) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| int i; |
| |
| for (i = 0; i < AR5416_MAX_CHAINS; i++) { |
| ahp->ah_totalAdcDcOffsetIOddPhase[i] += |
| (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_0(i)); |
| ahp->ah_totalAdcDcOffsetIEvenPhase[i] += |
| (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_1(i)); |
| ahp->ah_totalAdcDcOffsetQOddPhase[i] += |
| (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i)); |
| ahp->ah_totalAdcDcOffsetQEvenPhase[i] += |
| (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_3(i)); |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "%d: Chn %d oddi=0x%08x; eveni=0x%08x; " |
| "oddq=0x%08x; evenq=0x%08x;\n", |
| ahp->ah_CalSamples, i, |
| ahp->ah_totalAdcDcOffsetIOddPhase[i], |
| ahp->ah_totalAdcDcOffsetIEvenPhase[i], |
| ahp->ah_totalAdcDcOffsetQOddPhase[i], |
| ahp->ah_totalAdcDcOffsetQEvenPhase[i]); |
| } |
| } |
| |
| static void ath9k_hw_iqcalibrate(struct ath_hal *ah, u8 numChains) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| u32 powerMeasQ, powerMeasI, iqCorrMeas; |
| u32 qCoffDenom, iCoffDenom; |
| int32_t qCoff, iCoff; |
| int iqCorrNeg, i; |
| |
| for (i = 0; i < numChains; i++) { |
| powerMeasI = ahp->ah_totalPowerMeasI[i]; |
| powerMeasQ = ahp->ah_totalPowerMeasQ[i]; |
| iqCorrMeas = ahp->ah_totalIqCorrMeas[i]; |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Starting IQ Cal and Correction for Chain %d\n", |
| i); |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Orignal: Chn %diq_corr_meas = 0x%08x\n", |
| i, ahp->ah_totalIqCorrMeas[i]); |
| |
| iqCorrNeg = 0; |
| |
| if (iqCorrMeas > 0x80000000) { |
| iqCorrMeas = (0xffffffff - iqCorrMeas) + 1; |
| iqCorrNeg = 1; |
| } |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_i = 0x%08x\n", i, powerMeasI); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_q = 0x%08x\n", i, powerMeasQ); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, "iqCorrNeg is 0x%08x\n", |
| iqCorrNeg); |
| |
| iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 128; |
| qCoffDenom = powerMeasQ / 64; |
| |
| if (powerMeasQ != 0) { |
| iCoff = iqCorrMeas / iCoffDenom; |
| qCoff = powerMeasI / qCoffDenom - 64; |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d iCoff = 0x%08x\n", i, iCoff); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d qCoff = 0x%08x\n", i, qCoff); |
| |
| iCoff = iCoff & 0x3f; |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "New: Chn %d iCoff = 0x%08x\n", i, iCoff); |
| if (iqCorrNeg == 0x0) |
| iCoff = 0x40 - iCoff; |
| |
| if (qCoff > 15) |
| qCoff = 15; |
| else if (qCoff <= -16) |
| qCoff = 16; |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d : iCoff = 0x%x qCoff = 0x%x\n", |
| i, iCoff, qCoff); |
| |
| REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(i), |
| AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF, |
| iCoff); |
| REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(i), |
| AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF, |
| qCoff); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "IQ Cal and Correction done for Chain %d\n", |
| i); |
| } |
| } |
| |
| REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4(0), |
| AR_PHY_TIMING_CTRL4_IQCORR_ENABLE); |
| } |
| |
| static void ath9k_hw_adc_gaincal_calibrate(struct ath_hal *ah, u8 numChains) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| u32 iOddMeasOffset, iEvenMeasOffset, qOddMeasOffset, qEvenMeasOffset; |
| u32 qGainMismatch, iGainMismatch, val, i; |
| |
| for (i = 0; i < numChains; i++) { |
| iOddMeasOffset = ahp->ah_totalAdcIOddPhase[i]; |
| iEvenMeasOffset = ahp->ah_totalAdcIEvenPhase[i]; |
| qOddMeasOffset = ahp->ah_totalAdcQOddPhase[i]; |
| qEvenMeasOffset = ahp->ah_totalAdcQEvenPhase[i]; |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Starting ADC Gain Cal for Chain %d\n", i); |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_odd_i = 0x%08x\n", i, |
| iOddMeasOffset); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_even_i = 0x%08x\n", i, |
| iEvenMeasOffset); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_odd_q = 0x%08x\n", i, |
| qOddMeasOffset); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_even_q = 0x%08x\n", i, |
| qEvenMeasOffset); |
| |
| if (iOddMeasOffset != 0 && qEvenMeasOffset != 0) { |
| iGainMismatch = |
| ((iEvenMeasOffset * 32) / |
| iOddMeasOffset) & 0x3f; |
| qGainMismatch = |
| ((qOddMeasOffset * 32) / |
| qEvenMeasOffset) & 0x3f; |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d gain_mismatch_i = 0x%08x\n", i, |
| iGainMismatch); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d gain_mismatch_q = 0x%08x\n", i, |
| qGainMismatch); |
| |
| val = REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i)); |
| val &= 0xfffff000; |
| val |= (qGainMismatch) | (iGainMismatch << 6); |
| REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i), val); |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "ADC Gain Cal done for Chain %d\n", i); |
| } |
| } |
| |
| REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0), |
| REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0)) | |
| AR_PHY_NEW_ADC_GAIN_CORR_ENABLE); |
| } |
| |
| static void ath9k_hw_adc_dccal_calibrate(struct ath_hal *ah, u8 numChains) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| u32 iOddMeasOffset, iEvenMeasOffset, val, i; |
| int32_t qOddMeasOffset, qEvenMeasOffset, qDcMismatch, iDcMismatch; |
| const struct hal_percal_data *calData = |
| ahp->ah_cal_list_curr->calData; |
| u32 numSamples = |
| (1 << (calData->calCountMax + 5)) * calData->calNumSamples; |
| |
| for (i = 0; i < numChains; i++) { |
| iOddMeasOffset = ahp->ah_totalAdcDcOffsetIOddPhase[i]; |
| iEvenMeasOffset = ahp->ah_totalAdcDcOffsetIEvenPhase[i]; |
| qOddMeasOffset = ahp->ah_totalAdcDcOffsetQOddPhase[i]; |
| qEvenMeasOffset = ahp->ah_totalAdcDcOffsetQEvenPhase[i]; |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Starting ADC DC Offset Cal for Chain %d\n", i); |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_odd_i = %d\n", i, |
| iOddMeasOffset); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_even_i = %d\n", i, |
| iEvenMeasOffset); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_odd_q = %d\n", i, |
| qOddMeasOffset); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d pwr_meas_even_q = %d\n", i, |
| qEvenMeasOffset); |
| |
| iDcMismatch = (((iEvenMeasOffset - iOddMeasOffset) * 2) / |
| numSamples) & 0x1ff; |
| qDcMismatch = (((qOddMeasOffset - qEvenMeasOffset) * 2) / |
| numSamples) & 0x1ff; |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d dc_offset_mismatch_i = 0x%08x\n", i, |
| iDcMismatch); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Chn %d dc_offset_mismatch_q = 0x%08x\n", i, |
| qDcMismatch); |
| |
| val = REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i)); |
| val &= 0xc0000fff; |
| val |= (qDcMismatch << 12) | (iDcMismatch << 21); |
| REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i), val); |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "ADC DC Offset Cal done for Chain %d\n", i); |
| } |
| |
| REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0), |
| REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0)) | |
| AR_PHY_NEW_ADC_DC_OFFSET_CORR_ENABLE); |
| } |
| |
| /* This is done for the currently configured channel */ |
| bool ath9k_hw_reset_calvalid(struct ath_hal *ah) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| struct ieee80211_conf *conf = &ah->ah_sc->hw->conf; |
| struct hal_cal_list *currCal = ahp->ah_cal_list_curr; |
| |
| if (!ah->ah_curchan) |
| return true; |
| |
| if (!AR_SREV_9100(ah) && !AR_SREV_9160_10_OR_LATER(ah)) |
| return true; |
| |
| if (currCal == NULL) |
| return true; |
| |
| if (currCal->calState != CAL_DONE) { |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Calibration state incorrect, %d\n", |
| currCal->calState); |
| return true; |
| } |
| |
| if (!ath9k_hw_iscal_supported(ah, currCal->calData->calType)) |
| return true; |
| |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "Resetting Cal %d state for channel %u\n", |
| currCal->calData->calType, conf->channel->center_freq); |
| |
| ah->ah_curchan->CalValid &= ~currCal->calData->calType; |
| currCal->calState = CAL_WAITING; |
| |
| return false; |
| } |
| |
| void ath9k_hw_start_nfcal(struct ath_hal *ah) |
| { |
| REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, |
| AR_PHY_AGC_CONTROL_ENABLE_NF); |
| REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, |
| AR_PHY_AGC_CONTROL_NO_UPDATE_NF); |
| REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF); |
| } |
| |
| void ath9k_hw_loadnf(struct ath_hal *ah, struct ath9k_channel *chan) |
| { |
| struct ath9k_nfcal_hist *h; |
| int i, j; |
| int32_t val; |
| const u32 ar5416_cca_regs[6] = { |
| AR_PHY_CCA, |
| AR_PHY_CH1_CCA, |
| AR_PHY_CH2_CCA, |
| AR_PHY_EXT_CCA, |
| AR_PHY_CH1_EXT_CCA, |
| AR_PHY_CH2_EXT_CCA |
| }; |
| u8 chainmask; |
| |
| if (AR_SREV_9285(ah)) |
| chainmask = 0x9; |
| else if (AR_SREV_9280(ah)) |
| chainmask = 0x1B; |
| else |
| chainmask = 0x3F; |
| |
| h = ah->nfCalHist; |
| |
| for (i = 0; i < NUM_NF_READINGS; i++) { |
| if (chainmask & (1 << i)) { |
| val = REG_READ(ah, ar5416_cca_regs[i]); |
| val &= 0xFFFFFE00; |
| val |= (((u32) (h[i].privNF) << 1) & 0x1ff); |
| REG_WRITE(ah, ar5416_cca_regs[i], val); |
| } |
| } |
| |
| REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, |
| AR_PHY_AGC_CONTROL_ENABLE_NF); |
| REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, |
| AR_PHY_AGC_CONTROL_NO_UPDATE_NF); |
| REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF); |
| |
| for (j = 0; j < 1000; j++) { |
| if ((REG_READ(ah, AR_PHY_AGC_CONTROL) & |
| AR_PHY_AGC_CONTROL_NF) == 0) |
| break; |
| udelay(10); |
| } |
| |
| for (i = 0; i < NUM_NF_READINGS; i++) { |
| if (chainmask & (1 << i)) { |
| val = REG_READ(ah, ar5416_cca_regs[i]); |
| val &= 0xFFFFFE00; |
| val |= (((u32) (-50) << 1) & 0x1ff); |
| REG_WRITE(ah, ar5416_cca_regs[i], val); |
| } |
| } |
| } |
| |
| int16_t ath9k_hw_getnf(struct ath_hal *ah, |
| struct ath9k_channel *chan) |
| { |
| int16_t nf, nfThresh; |
| int16_t nfarray[NUM_NF_READINGS] = { 0 }; |
| struct ath9k_nfcal_hist *h; |
| struct ieee80211_channel *c = chan->chan; |
| |
| chan->channelFlags &= (~CHANNEL_CW_INT); |
| if (REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF) { |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "NF did not complete in calibration window\n"); |
| nf = 0; |
| chan->rawNoiseFloor = nf; |
| return chan->rawNoiseFloor; |
| } else { |
| ath9k_hw_do_getnf(ah, nfarray); |
| nf = nfarray[0]; |
| if (getNoiseFloorThresh(ah, c->band, &nfThresh) |
| && nf > nfThresh) { |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "noise floor failed detected; " |
| "detected %d, threshold %d\n", |
| nf, nfThresh); |
| chan->channelFlags |= CHANNEL_CW_INT; |
| } |
| } |
| |
| h = ah->nfCalHist; |
| |
| ath9k_hw_update_nfcal_hist_buffer(h, nfarray); |
| chan->rawNoiseFloor = h[0].privNF; |
| |
| return chan->rawNoiseFloor; |
| } |
| |
| void ath9k_init_nfcal_hist_buffer(struct ath_hal *ah) |
| { |
| int i, j; |
| |
| for (i = 0; i < NUM_NF_READINGS; i++) { |
| ah->nfCalHist[i].currIndex = 0; |
| ah->nfCalHist[i].privNF = AR_PHY_CCA_MAX_GOOD_VALUE; |
| ah->nfCalHist[i].invalidNFcount = |
| AR_PHY_CCA_FILTERWINDOW_LENGTH; |
| for (j = 0; j < ATH9K_NF_CAL_HIST_MAX; j++) { |
| ah->nfCalHist[i].nfCalBuffer[j] = |
| AR_PHY_CCA_MAX_GOOD_VALUE; |
| } |
| } |
| return; |
| } |
| |
| s16 ath9k_hw_getchan_noise(struct ath_hal *ah, struct ath9k_channel *chan) |
| { |
| s16 nf; |
| |
| if (chan->rawNoiseFloor == 0) |
| nf = -96; |
| else |
| nf = chan->rawNoiseFloor; |
| |
| if (!ath9k_hw_nf_in_range(ah, nf)) |
| nf = ATH_DEFAULT_NOISE_FLOOR; |
| |
| return nf; |
| } |
| |
| bool ath9k_hw_calibrate(struct ath_hal *ah, struct ath9k_channel *chan, |
| u8 rxchainmask, bool longcal, |
| bool *isCalDone) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| struct hal_cal_list *currCal = ahp->ah_cal_list_curr; |
| |
| *isCalDone = true; |
| |
| if (currCal && |
| (currCal->calState == CAL_RUNNING || |
| currCal->calState == CAL_WAITING)) { |
| ath9k_hw_per_calibration(ah, chan, rxchainmask, currCal, |
| isCalDone); |
| if (*isCalDone) { |
| ahp->ah_cal_list_curr = currCal = currCal->calNext; |
| |
| if (currCal->calState == CAL_WAITING) { |
| *isCalDone = false; |
| ath9k_hw_reset_calibration(ah, currCal); |
| } |
| } |
| } |
| |
| if (longcal) { |
| ath9k_hw_getnf(ah, chan); |
| ath9k_hw_loadnf(ah, ah->ah_curchan); |
| ath9k_hw_start_nfcal(ah); |
| |
| if (chan->channelFlags & CHANNEL_CW_INT) |
| chan->channelFlags &= ~CHANNEL_CW_INT; |
| } |
| |
| return true; |
| } |
| |
| static inline void ath9k_hw_9285_pa_cal(struct ath_hal *ah) |
| { |
| |
| u32 regVal; |
| int i, offset, offs_6_1, offs_0; |
| u32 ccomp_org, reg_field; |
| u32 regList[][2] = { |
| { 0x786c, 0 }, |
| { 0x7854, 0 }, |
| { 0x7820, 0 }, |
| { 0x7824, 0 }, |
| { 0x7868, 0 }, |
| { 0x783c, 0 }, |
| { 0x7838, 0 }, |
| }; |
| |
| if (AR_SREV_9285_11(ah)) { |
| REG_WRITE(ah, AR9285_AN_TOP4, (AR9285_AN_TOP4_DEFAULT | 0x14)); |
| udelay(10); |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(regList); i++) |
| regList[i][1] = REG_READ(ah, regList[i][0]); |
| |
| regVal = REG_READ(ah, 0x7834); |
| regVal &= (~(0x1)); |
| REG_WRITE(ah, 0x7834, regVal); |
| regVal = REG_READ(ah, 0x9808); |
| regVal |= (0x1 << 27); |
| REG_WRITE(ah, 0x9808, regVal); |
| |
| REG_RMW_FIELD(ah, AR9285_AN_TOP3, AR9285_AN_TOP3_PWDDAC, 1); |
| REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDRXTXBB1, 1); |
| REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDV2I, 1); |
| REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDDACIF, 1); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G2, AR9285_AN_RF2G2_OFFCAL, 0); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PWDDB, 0); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_ENPACAL, 0); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV1, 1); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV2, 0); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPAOUT, 0); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G8, AR9285_AN_RF2G8_PADRVGN2TAB0, 7); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PADRVGN2TAB0, 0); |
| ccomp_org = MS(REG_READ(ah, AR9285_AN_RF2G6), AR9285_AN_RF2G6_CCOMP); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_CCOMP, 7); |
| |
| REG_WRITE(ah, AR9285_AN_TOP2, 0xca0358a0); |
| udelay(30); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_OFFS, 0); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, 0); |
| |
| for (i = 6; i > 0; i--) { |
| regVal = REG_READ(ah, 0x7834); |
| regVal |= (1 << (19 + i)); |
| REG_WRITE(ah, 0x7834, regVal); |
| udelay(1); |
| regVal = REG_READ(ah, 0x7834); |
| regVal &= (~(0x1 << (19 + i))); |
| reg_field = MS(REG_READ(ah, 0x7840), AR9285_AN_RXTXBB1_SPARE9); |
| regVal |= (reg_field << (19 + i)); |
| REG_WRITE(ah, 0x7834, regVal); |
| } |
| |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, 1); |
| udelay(1); |
| reg_field = MS(REG_READ(ah, AR9285_AN_RF2G9), AR9285_AN_RXTXBB1_SPARE9); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, reg_field); |
| offs_6_1 = MS(REG_READ(ah, AR9285_AN_RF2G6), AR9285_AN_RF2G6_OFFS); |
| offs_0 = MS(REG_READ(ah, AR9285_AN_RF2G3), AR9285_AN_RF2G3_PDVCCOMP); |
| |
| offset = (offs_6_1<<1) | offs_0; |
| offset = offset - 0; |
| offs_6_1 = offset>>1; |
| offs_0 = offset & 1; |
| |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_OFFS, offs_6_1); |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, offs_0); |
| |
| regVal = REG_READ(ah, 0x7834); |
| regVal |= 0x1; |
| REG_WRITE(ah, 0x7834, regVal); |
| regVal = REG_READ(ah, 0x9808); |
| regVal &= (~(0x1 << 27)); |
| REG_WRITE(ah, 0x9808, regVal); |
| |
| for (i = 0; i < ARRAY_SIZE(regList); i++) |
| REG_WRITE(ah, regList[i][0], regList[i][1]); |
| |
| REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_CCOMP, ccomp_org); |
| |
| if (AR_SREV_9285_11(ah)) |
| REG_WRITE(ah, AR9285_AN_TOP4, AR9285_AN_TOP4_DEFAULT); |
| |
| } |
| |
| bool ath9k_hw_init_cal(struct ath_hal *ah, |
| struct ath9k_channel *chan) |
| { |
| struct ath_hal_5416 *ahp = AH5416(ah); |
| |
| REG_WRITE(ah, AR_PHY_AGC_CONTROL, |
| REG_READ(ah, AR_PHY_AGC_CONTROL) | |
| AR_PHY_AGC_CONTROL_CAL); |
| |
| if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL, 0)) { |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "offset calibration failed to complete in 1ms; " |
| "noisy environment?\n"); |
| return false; |
| } |
| |
| if (AR_SREV_9285(ah) && AR_SREV_9285_11_OR_LATER(ah)) |
| ath9k_hw_9285_pa_cal(ah); |
| |
| REG_WRITE(ah, AR_PHY_AGC_CONTROL, |
| REG_READ(ah, AR_PHY_AGC_CONTROL) | |
| AR_PHY_AGC_CONTROL_NF); |
| |
| ahp->ah_cal_list = ahp->ah_cal_list_last = ahp->ah_cal_list_curr = NULL; |
| |
| if (AR_SREV_9100(ah) || AR_SREV_9160_10_OR_LATER(ah)) { |
| if (ath9k_hw_iscal_supported(ah, ADC_GAIN_CAL)) { |
| INIT_CAL(&ahp->ah_adcGainCalData); |
| INSERT_CAL(ahp, &ahp->ah_adcGainCalData); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "enabling ADC Gain Calibration.\n"); |
| } |
| if (ath9k_hw_iscal_supported(ah, ADC_DC_CAL)) { |
| INIT_CAL(&ahp->ah_adcDcCalData); |
| INSERT_CAL(ahp, &ahp->ah_adcDcCalData); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "enabling ADC DC Calibration.\n"); |
| } |
| if (ath9k_hw_iscal_supported(ah, IQ_MISMATCH_CAL)) { |
| INIT_CAL(&ahp->ah_iqCalData); |
| INSERT_CAL(ahp, &ahp->ah_iqCalData); |
| DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, |
| "enabling IQ Calibration.\n"); |
| } |
| |
| ahp->ah_cal_list_curr = ahp->ah_cal_list; |
| |
| if (ahp->ah_cal_list_curr) |
| ath9k_hw_reset_calibration(ah, ahp->ah_cal_list_curr); |
| } |
| |
| chan->CalValid = 0; |
| |
| return true; |
| } |
| |
| const struct hal_percal_data iq_cal_multi_sample = { |
| IQ_MISMATCH_CAL, |
| MAX_CAL_SAMPLES, |
| PER_MIN_LOG_COUNT, |
| ath9k_hw_iqcal_collect, |
| ath9k_hw_iqcalibrate |
| }; |
| const struct hal_percal_data iq_cal_single_sample = { |
| IQ_MISMATCH_CAL, |
| MIN_CAL_SAMPLES, |
| PER_MAX_LOG_COUNT, |
| ath9k_hw_iqcal_collect, |
| ath9k_hw_iqcalibrate |
| }; |
| const struct hal_percal_data adc_gain_cal_multi_sample = { |
| ADC_GAIN_CAL, |
| MAX_CAL_SAMPLES, |
| PER_MIN_LOG_COUNT, |
| ath9k_hw_adc_gaincal_collect, |
| ath9k_hw_adc_gaincal_calibrate |
| }; |
| const struct hal_percal_data adc_gain_cal_single_sample = { |
| ADC_GAIN_CAL, |
| MIN_CAL_SAMPLES, |
| PER_MAX_LOG_COUNT, |
| ath9k_hw_adc_gaincal_collect, |
| ath9k_hw_adc_gaincal_calibrate |
| }; |
| const struct hal_percal_data adc_dc_cal_multi_sample = { |
| ADC_DC_CAL, |
| MAX_CAL_SAMPLES, |
| PER_MIN_LOG_COUNT, |
| ath9k_hw_adc_dccal_collect, |
| ath9k_hw_adc_dccal_calibrate |
| }; |
| const struct hal_percal_data adc_dc_cal_single_sample = { |
| ADC_DC_CAL, |
| MIN_CAL_SAMPLES, |
| PER_MAX_LOG_COUNT, |
| ath9k_hw_adc_dccal_collect, |
| ath9k_hw_adc_dccal_calibrate |
| }; |
| const struct hal_percal_data adc_init_dc_cal = { |
| ADC_DC_INIT_CAL, |
| MIN_CAL_SAMPLES, |
| INIT_LOG_COUNT, |
| ath9k_hw_adc_dccal_collect, |
| ath9k_hw_adc_dccal_calibrate |
| }; |