diff options
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k_ar9003_calib.c')
| -rw-r--r-- | qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k_ar9003_calib.c | 932 |
1 files changed, 0 insertions, 932 deletions
diff --git a/qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k_ar9003_calib.c b/qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k_ar9003_calib.c deleted file mode 100644 index c37168bd2..000000000 --- a/qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k_ar9003_calib.c +++ /dev/null @@ -1,932 +0,0 @@ -/* - * Copyright (c) 2010-2011 Atheros Communications Inc. - * - * Modified for iPXE by Scott K Logan <logans@cottsay.net> July 2011 - * Original from Linux kernel 3.0.1 - * - * 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 <ipxe/io.h> - -#include "hw.h" -#include "hw-ops.h" -#include "ar9003_phy.h" - -#define MAX_MEASUREMENT 8 -#define MAX_MAG_DELTA 11 -#define MAX_PHS_DELTA 10 - -struct coeff { - int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT]; - int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT]; - int iqc_coeff[2]; -}; - -enum ar9003_cal_types { - IQ_MISMATCH_CAL = BIT(0), - TEMP_COMP_CAL = BIT(1), -}; - -static void ar9003_hw_setup_calibration(struct ath_hw *ah, - struct ath9k_cal_list *currCal) -{ - /* Select calibration to run */ - switch (currCal->calData->calType) { - case IQ_MISMATCH_CAL: - /* - * Start calibration with - * 2^(INIT_IQCAL_LOG_COUNT_MAX+1) samples - */ - REG_RMW_FIELD(ah, AR_PHY_TIMING4, - AR_PHY_TIMING4_IQCAL_LOG_COUNT_MAX, - currCal->calData->calCountMax); - REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_IQ); - - DBG2("ath9k: " - "starting IQ Mismatch Calibration\n"); - - /* Kick-off cal */ - REG_SET_BIT(ah, AR_PHY_TIMING4, AR_PHY_TIMING4_DO_CAL); - break; - case TEMP_COMP_CAL: - REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_THERM, - AR_PHY_65NM_CH0_THERM_LOCAL, 1); - REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_THERM, - AR_PHY_65NM_CH0_THERM_START, 1); - - DBG2("ath9k: " - "starting Temperature Compensation Calibration\n"); - break; - } -} - -/* - * Generic calibration routine. - * Recalibrate the lower PHY chips to account for temperature/environment - * changes. - */ -static int ar9003_hw_per_calibration(struct ath_hw *ah, - struct ath9k_channel *ichan __unused, - u8 rxchainmask, - struct ath9k_cal_list *currCal) -{ - struct ath9k_hw_cal_data *caldata = ah->caldata; - /* Cal is assumed not done until explicitly set below */ - int iscaldone = 0; - - /* Calibration in progress. */ - if (currCal->calState == CAL_RUNNING) { - /* Check to see if it has finished. */ - if (!(REG_READ(ah, AR_PHY_TIMING4) & AR_PHY_TIMING4_DO_CAL)) { - /* - * Accumulate cal measures for active chains - */ - currCal->calData->calCollect(ah); - ah->cal_samples++; - - if (ah->cal_samples >= - currCal->calData->calNumSamples) { - unsigned int i, numChains = 0; - for (i = 0; i < AR9300_MAX_CHAINS; i++) { - if (rxchainmask & (1 << i)) - numChains++; - } - - /* - * Process accumulated data - */ - currCal->calData->calPostProc(ah, numChains); - - /* Calibration has finished. */ - caldata->CalValid |= currCal->calData->calType; - currCal->calState = CAL_DONE; - iscaldone = 1; - } else { - /* - * Set-up collection of another sub-sample until we - * get desired number - */ - ar9003_hw_setup_calibration(ah, currCal); - } - } - } else if (!(caldata->CalValid & currCal->calData->calType)) { - /* If current cal is marked invalid in channel, kick it off */ - ath9k_hw_reset_calibration(ah, currCal); - } - - return iscaldone; -} - -static int ar9003_hw_calibrate(struct ath_hw *ah, - struct ath9k_channel *chan, - u8 rxchainmask, - int longcal) -{ - int iscaldone = 1; - struct ath9k_cal_list *currCal = ah->cal_list_curr; - - /* - * For given calibration: - * 1. Call generic cal routine - * 2. When this cal is done (isCalDone) if we have more cals waiting - * (eg after reset), mask this to upper layers by not propagating - * isCalDone if it is set to TRUE. - * Instead, change isCalDone to FALSE and setup the waiting cal(s) - * to be run. - */ - if (currCal && - (currCal->calState == CAL_RUNNING || - currCal->calState == CAL_WAITING)) { - iscaldone = ar9003_hw_per_calibration(ah, chan, - rxchainmask, currCal); - if (iscaldone) { - ah->cal_list_curr = currCal = currCal->calNext; - - if (currCal->calState == CAL_WAITING) { - iscaldone = 0; - ath9k_hw_reset_calibration(ah, currCal); - } - } - } - - /* Do NF cal only at longer intervals */ - if (longcal) { - /* - * Get the value from the previous NF cal and update - * history buffer. - */ - ath9k_hw_getnf(ah, chan); - - /* - * Load the NF from history buffer of the current channel. - * NF is slow time-variant, so it is OK to use a historical - * value. - */ - ath9k_hw_loadnf(ah, ah->curchan); - - /* start NF calibration, without updating BB NF register */ - ath9k_hw_start_nfcal(ah, 0); - } - - return iscaldone; -} - -static void ar9003_hw_iqcal_collect(struct ath_hw *ah) -{ - int i; - - /* Accumulate IQ cal measures for active chains */ - for (i = 0; i < AR5416_MAX_CHAINS; i++) { - if (ah->txchainmask & BIT(i)) { - ah->totalPowerMeasI[i] += - REG_READ(ah, AR_PHY_CAL_MEAS_0(i)); - ah->totalPowerMeasQ[i] += - REG_READ(ah, AR_PHY_CAL_MEAS_1(i)); - ah->totalIqCorrMeas[i] += - (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i)); - DBG2("ath9k: " - "%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n", - ah->cal_samples, i, ah->totalPowerMeasI[i], - ah->totalPowerMeasQ[i], - ah->totalIqCorrMeas[i]); - } - } -} - -static void ar9003_hw_iqcalibrate(struct ath_hw *ah, u8 numChains) -{ - u32 powerMeasQ, powerMeasI, iqCorrMeas; - u32 qCoffDenom, iCoffDenom; - int32_t qCoff, iCoff; - int iqCorrNeg, i; - static const uint32_t offset_array[3] = { - AR_PHY_RX_IQCAL_CORR_B0, - AR_PHY_RX_IQCAL_CORR_B1, - AR_PHY_RX_IQCAL_CORR_B2, - }; - - for (i = 0; i < numChains; i++) { - powerMeasI = ah->totalPowerMeasI[i]; - powerMeasQ = ah->totalPowerMeasQ[i]; - iqCorrMeas = ah->totalIqCorrMeas[i]; - - DBG2("ath9k: " - "Starting IQ Cal and Correction for Chain %d\n", - i); - - DBG2("ath9k: " - "Orignal: Chn %diq_corr_meas = 0x%08x\n", - i, ah->totalIqCorrMeas[i]); - - iqCorrNeg = 0; - - if (iqCorrMeas > 0x80000000) { - iqCorrMeas = (0xffffffff - iqCorrMeas) + 1; - iqCorrNeg = 1; - } - - DBG2("ath9k: " - "Chn %d pwr_meas_i = 0x%08x\n", i, powerMeasI); - DBG2("ath9k: " - "Chn %d pwr_meas_q = 0x%08x\n", i, powerMeasQ); - DBG2("ath9k: iqCorrNeg is 0x%08x\n", - iqCorrNeg); - - iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 256; - qCoffDenom = powerMeasQ / 64; - - if ((iCoffDenom != 0) && (qCoffDenom != 0)) { - iCoff = iqCorrMeas / iCoffDenom; - qCoff = powerMeasI / qCoffDenom - 64; - DBG2("ath9k: " - "Chn %d iCoff = 0x%08x\n", i, iCoff); - DBG2("ath9k: " - "Chn %d qCoff = 0x%08x\n", i, qCoff); - - /* Force bounds on iCoff */ - if (iCoff >= 63) - iCoff = 63; - else if (iCoff <= -63) - iCoff = -63; - - /* Negate iCoff if iqCorrNeg == 0 */ - if (iqCorrNeg == 0x0) - iCoff = -iCoff; - - /* Force bounds on qCoff */ - if (qCoff >= 63) - qCoff = 63; - else if (qCoff <= -63) - qCoff = -63; - - iCoff = iCoff & 0x7f; - qCoff = qCoff & 0x7f; - - DBG2("ath9k: " - "Chn %d : iCoff = 0x%x qCoff = 0x%x\n", - i, iCoff, qCoff); - DBG2("ath9k: " - "Register offset (0x%04x) before update = 0x%x\n", - offset_array[i], - REG_READ(ah, offset_array[i])); - - REG_RMW_FIELD(ah, offset_array[i], - AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, - iCoff); - REG_RMW_FIELD(ah, offset_array[i], - AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, - qCoff); - DBG2("ath9k: " - "Register offset (0x%04x) QI COFF (bitfields 0x%08x) after update = 0x%x\n", - offset_array[i], - AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, - REG_READ(ah, offset_array[i])); - DBG2("ath9k: " - "Register offset (0x%04x) QQ COFF (bitfields 0x%08x) after update = 0x%x\n", - offset_array[i], - AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, - REG_READ(ah, offset_array[i])); - - DBG2("ath9k: " - "IQ Cal and Correction done for Chain %d\n", i); - } - } - - REG_SET_BIT(ah, AR_PHY_RX_IQCAL_CORR_B0, - AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE); - DBG2("ath9k: " - "IQ Cal and Correction (offset 0x%04x) enabled (bit position 0x%08x). New Value 0x%08x\n", - (unsigned) (AR_PHY_RX_IQCAL_CORR_B0), - AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE, - REG_READ(ah, AR_PHY_RX_IQCAL_CORR_B0)); -} - -static const struct ath9k_percal_data iq_cal_single_sample = { - IQ_MISMATCH_CAL, - MIN_CAL_SAMPLES, - PER_MAX_LOG_COUNT, - ar9003_hw_iqcal_collect, - ar9003_hw_iqcalibrate -}; - -static void ar9003_hw_init_cal_settings(struct ath_hw *ah) -{ - ah->iq_caldata.calData = &iq_cal_single_sample; -} - -/* - * solve 4x4 linear equation used in loopback iq cal. - */ -static int ar9003_hw_solve_iq_cal(struct ath_hw *ah __unused, - s32 sin_2phi_1, - s32 cos_2phi_1, - s32 sin_2phi_2, - s32 cos_2phi_2, - s32 mag_a0_d0, - s32 phs_a0_d0, - s32 mag_a1_d0, - s32 phs_a1_d0, - s32 solved_eq[]) -{ - s32 f1 = cos_2phi_1 - cos_2phi_2, - f3 = sin_2phi_1 - sin_2phi_2, - f2; - s32 mag_tx, phs_tx, mag_rx, phs_rx; - const s32 result_shift = 1 << 15; - - f2 = (f1 * f1 + f3 * f3) / result_shift; - - if (!f2) { - DBG("ath9k: Divide by 0\n"); - return 0; - } - - /* mag mismatch, tx */ - mag_tx = f1 * (mag_a0_d0 - mag_a1_d0) + f3 * (phs_a0_d0 - phs_a1_d0); - /* phs mismatch, tx */ - phs_tx = f3 * (-mag_a0_d0 + mag_a1_d0) + f1 * (phs_a0_d0 - phs_a1_d0); - - mag_tx = (mag_tx / f2); - phs_tx = (phs_tx / f2); - - /* mag mismatch, rx */ - mag_rx = mag_a0_d0 - (cos_2phi_1 * mag_tx + sin_2phi_1 * phs_tx) / - result_shift; - /* phs mismatch, rx */ - phs_rx = phs_a0_d0 + (sin_2phi_1 * mag_tx - cos_2phi_1 * phs_tx) / - result_shift; - - solved_eq[0] = mag_tx; - solved_eq[1] = phs_tx; - solved_eq[2] = mag_rx; - solved_eq[3] = phs_rx; - - return 1; -} - -static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah __unused, s32 in_re, s32 in_im) -{ - s32 abs_i = abs(in_re), - abs_q = abs(in_im), - max_abs, min_abs; - - if (abs_i > abs_q) { - max_abs = abs_i; - min_abs = abs_q; - } else { - max_abs = abs_q; - min_abs = abs_i; - } - - return max_abs - (max_abs / 32) + (min_abs / 8) + (min_abs / 4); -} - -#define DELPT 32 - -static int ar9003_hw_calc_iq_corr(struct ath_hw *ah, - s32 chain_idx, - const s32 iq_res[], - s32 iqc_coeff[]) -{ - s32 i2_m_q2_a0_d0, i2_p_q2_a0_d0, iq_corr_a0_d0, - i2_m_q2_a0_d1, i2_p_q2_a0_d1, iq_corr_a0_d1, - i2_m_q2_a1_d0, i2_p_q2_a1_d0, iq_corr_a1_d0, - i2_m_q2_a1_d1, i2_p_q2_a1_d1, iq_corr_a1_d1; - s32 mag_a0_d0, mag_a1_d0, mag_a0_d1, mag_a1_d1, - phs_a0_d0, phs_a1_d0, phs_a0_d1, phs_a1_d1, - sin_2phi_1, cos_2phi_1, - sin_2phi_2, cos_2phi_2; - s32 mag_tx, phs_tx, mag_rx, phs_rx; - s32 solved_eq[4], mag_corr_tx, phs_corr_tx, mag_corr_rx, phs_corr_rx, - q_q_coff, q_i_coff; - const s32 res_scale = 1 << 15; - const s32 delpt_shift = 1 << 8; - s32 mag1, mag2; - - i2_m_q2_a0_d0 = iq_res[0] & 0xfff; - i2_p_q2_a0_d0 = (iq_res[0] >> 12) & 0xfff; - iq_corr_a0_d0 = ((iq_res[0] >> 24) & 0xff) + ((iq_res[1] & 0xf) << 8); - - if (i2_m_q2_a0_d0 > 0x800) - i2_m_q2_a0_d0 = -((0xfff - i2_m_q2_a0_d0) + 1); - - if (i2_p_q2_a0_d0 > 0x800) - i2_p_q2_a0_d0 = -((0xfff - i2_p_q2_a0_d0) + 1); - - if (iq_corr_a0_d0 > 0x800) - iq_corr_a0_d0 = -((0xfff - iq_corr_a0_d0) + 1); - - i2_m_q2_a0_d1 = (iq_res[1] >> 4) & 0xfff; - i2_p_q2_a0_d1 = (iq_res[2] & 0xfff); - iq_corr_a0_d1 = (iq_res[2] >> 12) & 0xfff; - - if (i2_m_q2_a0_d1 > 0x800) - i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1); - - if (i2_p_q2_a0_d1 > 0x800) - i2_p_q2_a0_d1 = -((0xfff - i2_p_q2_a0_d1) + 1); - - if (iq_corr_a0_d1 > 0x800) - iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1); - - i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8); - i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff; - iq_corr_a1_d0 = iq_res[4] & 0xfff; - - if (i2_m_q2_a1_d0 > 0x800) - i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1); - - if (i2_p_q2_a1_d0 > 0x800) - i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1); - - if (iq_corr_a1_d0 > 0x800) - iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1); - - i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff; - i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8); - iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff; - - if (i2_m_q2_a1_d1 > 0x800) - i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1); - - if (i2_p_q2_a1_d1 > 0x800) - i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1); - - if (iq_corr_a1_d1 > 0x800) - iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1); - - if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) || - (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) { - DBG("ath9k: " - "Divide by 0:\n" - "a0_d0=%d\n" - "a0_d1=%d\n" - "a2_d0=%d\n" - "a1_d1=%d\n", - i2_p_q2_a0_d0, i2_p_q2_a0_d1, - i2_p_q2_a1_d0, i2_p_q2_a1_d1); - return 0; - } - - mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0; - phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0; - - mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1; - phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1; - - mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0; - phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0; - - mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1; - phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1; - - /* w/o analog phase shift */ - sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT); - /* w/o analog phase shift */ - cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT); - /* w/ analog phase shift */ - sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT); - /* w/ analog phase shift */ - cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT); - - /* - * force sin^2 + cos^2 = 1; - * find magnitude by approximation - */ - mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1); - mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2); - - if ((mag1 == 0) || (mag2 == 0)) { - DBG("ath9k: " - "Divide by 0: mag1=%d, mag2=%d\n", - mag1, mag2); - return 0; - } - - /* normalization sin and cos by mag */ - sin_2phi_1 = (sin_2phi_1 * res_scale / mag1); - cos_2phi_1 = (cos_2phi_1 * res_scale / mag1); - sin_2phi_2 = (sin_2phi_2 * res_scale / mag2); - cos_2phi_2 = (cos_2phi_2 * res_scale / mag2); - - /* calculate IQ mismatch */ - if (!ar9003_hw_solve_iq_cal(ah, - sin_2phi_1, cos_2phi_1, - sin_2phi_2, cos_2phi_2, - mag_a0_d0, phs_a0_d0, - mag_a1_d0, - phs_a1_d0, solved_eq)) { - DBG("ath9k: " - "Call to ar9003_hw_solve_iq_cal() failed.\n"); - return 0; - } - - mag_tx = solved_eq[0]; - phs_tx = solved_eq[1]; - mag_rx = solved_eq[2]; - phs_rx = solved_eq[3]; - - DBG2("ath9k: " - "chain %d: mag mismatch=%d phase mismatch=%d\n", - chain_idx, mag_tx/res_scale, phs_tx/res_scale); - - if (res_scale == mag_tx) { - DBG("ath9k: " - "Divide by 0: mag_tx=%d, res_scale=%d\n", - mag_tx, res_scale); - return 0; - } - - /* calculate and quantize Tx IQ correction factor */ - mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx); - phs_corr_tx = -phs_tx; - - q_q_coff = (mag_corr_tx * 128 / res_scale); - q_i_coff = (phs_corr_tx * 256 / res_scale); - - DBG2("ath9k: " - "tx chain %d: mag corr=%d phase corr=%d\n", - chain_idx, q_q_coff, q_i_coff); - - if (q_i_coff < -63) - q_i_coff = -63; - if (q_i_coff > 63) - q_i_coff = 63; - if (q_q_coff < -63) - q_q_coff = -63; - if (q_q_coff > 63) - q_q_coff = 63; - - iqc_coeff[0] = (q_q_coff * 128) + q_i_coff; - - DBG2("ath9k: " - "tx chain %d: iq corr coeff=%x\n", - chain_idx, iqc_coeff[0]); - - if (-mag_rx == res_scale) { - DBG("ath9k: " - "Divide by 0: mag_rx=%d, res_scale=%d\n", - mag_rx, res_scale); - return 0; - } - - /* calculate and quantize Rx IQ correction factors */ - mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx); - phs_corr_rx = -phs_rx; - - q_q_coff = (mag_corr_rx * 128 / res_scale); - q_i_coff = (phs_corr_rx * 256 / res_scale); - - DBG("ath9k: " - "rx chain %d: mag corr=%d phase corr=%d\n", - chain_idx, q_q_coff, q_i_coff); - - if (q_i_coff < -63) - q_i_coff = -63; - if (q_i_coff > 63) - q_i_coff = 63; - if (q_q_coff < -63) - q_q_coff = -63; - if (q_q_coff > 63) - q_q_coff = 63; - - iqc_coeff[1] = (q_q_coff * 128) + q_i_coff; - - DBG2("ath9k: " - "rx chain %d: iq corr coeff=%x\n", - chain_idx, iqc_coeff[1]); - - return 1; -} - -static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement, - int max_delta) -{ - int mp_max = -64, max_idx = 0; - int mp_min = 63, min_idx = 0; - int mp_avg = 0, i, outlier_idx = 0; - - /* find min/max mismatch across all calibrated gains */ - for (i = 0; i < nmeasurement; i++) { - mp_avg += mp_coeff[i]; - if (mp_coeff[i] > mp_max) { - mp_max = mp_coeff[i]; - max_idx = i; - } else if (mp_coeff[i] < mp_min) { - mp_min = mp_coeff[i]; - min_idx = i; - } - } - - /* find average (exclude max abs value) */ - for (i = 0; i < nmeasurement; i++) { - if ((abs(mp_coeff[i]) < abs(mp_max)) || - (abs(mp_coeff[i]) < abs(mp_min))) - mp_avg += mp_coeff[i]; - } - mp_avg /= (nmeasurement - 1); - - /* detect outlier */ - if (abs(mp_max - mp_min) > max_delta) { - if (abs(mp_max - mp_avg) > abs(mp_min - mp_avg)) - outlier_idx = max_idx; - else - outlier_idx = min_idx; - } - mp_coeff[outlier_idx] = mp_avg; -} - -static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah, - u8 num_chains, - struct coeff *coeff) -{ - int i, im, nmeasurement; - u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS]; - - memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff)); - for (i = 0; i < MAX_MEASUREMENT / 2; i++) { - tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] = - AR_PHY_TX_IQCAL_CORR_COEFF_B0(i); - if (!AR_SREV_9485(ah)) { - tx_corr_coeff[i * 2][1] = - tx_corr_coeff[(i * 2) + 1][1] = - AR_PHY_TX_IQCAL_CORR_COEFF_B1(i); - - tx_corr_coeff[i * 2][2] = - tx_corr_coeff[(i * 2) + 1][2] = - AR_PHY_TX_IQCAL_CORR_COEFF_B2(i); - } - } - - /* Load the average of 2 passes */ - for (i = 0; i < num_chains; i++) { - nmeasurement = REG_READ_FIELD(ah, - AR_PHY_TX_IQCAL_STATUS_B0, - AR_PHY_CALIBRATED_GAINS_0); - - if (nmeasurement > MAX_MEASUREMENT) - nmeasurement = MAX_MEASUREMENT; - - /* detect outlier only if nmeasurement > 1 */ - if (nmeasurement > 1) { - /* Detect magnitude outlier */ - ar9003_hw_detect_outlier(coeff->mag_coeff[i], - nmeasurement, MAX_MAG_DELTA); - - /* Detect phase outlier */ - ar9003_hw_detect_outlier(coeff->phs_coeff[i], - nmeasurement, MAX_PHS_DELTA); - } - - for (im = 0; im < nmeasurement; im++) { - - coeff->iqc_coeff[0] = (coeff->mag_coeff[i][im] & 0x7f) | - ((coeff->phs_coeff[i][im] & 0x7f) << 7); - - if ((im % 2) == 0) - REG_RMW_FIELD(ah, tx_corr_coeff[im][i], - AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE, - coeff->iqc_coeff[0]); - else - REG_RMW_FIELD(ah, tx_corr_coeff[im][i], - AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE, - coeff->iqc_coeff[0]); - } - } - - REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, - AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1); - REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0, - AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1); - - return; - -} - -static int ar9003_hw_tx_iq_cal_run(struct ath_hw *ah) -{ - u8 tx_gain_forced; - - tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN, - AR_PHY_TXGAIN_FORCE); - if (tx_gain_forced) - REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, - AR_PHY_TXGAIN_FORCE, 0); - - REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START, - AR_PHY_TX_IQCAL_START_DO_CAL, 1); - - if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START, - AR_PHY_TX_IQCAL_START_DO_CAL, 0, - AH_WAIT_TIMEOUT)) { - DBG2("ath9k: " - "Tx IQ Cal is not completed.\n"); - return 0; - } - return 1; -} - -static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah) -{ - const u32 txiqcal_status[AR9300_MAX_CHAINS] = { - AR_PHY_TX_IQCAL_STATUS_B0, - AR_PHY_TX_IQCAL_STATUS_B1, - AR_PHY_TX_IQCAL_STATUS_B2, - }; - const uint32_t chan_info_tab[] = { - AR_PHY_CHAN_INFO_TAB_0, - AR_PHY_CHAN_INFO_TAB_1, - AR_PHY_CHAN_INFO_TAB_2, - }; - struct coeff coeff; - s32 iq_res[6]; - u8 num_chains = 0; - int i, im, j; - int nmeasurement; - - for (i = 0; i < AR9300_MAX_CHAINS; i++) { - if (ah->txchainmask & (1 << i)) - num_chains++; - } - - for (i = 0; i < num_chains; i++) { - nmeasurement = REG_READ_FIELD(ah, - AR_PHY_TX_IQCAL_STATUS_B0, - AR_PHY_CALIBRATED_GAINS_0); - if (nmeasurement > MAX_MEASUREMENT) - nmeasurement = MAX_MEASUREMENT; - - for (im = 0; im < nmeasurement; im++) { - DBG2("ath9k: " - "Doing Tx IQ Cal for chain %d.\n", i); - - if (REG_READ(ah, txiqcal_status[i]) & - AR_PHY_TX_IQCAL_STATUS_FAILED) { - DBG("ath9k: " - "Tx IQ Cal failed for chain %d.\n", i); - goto tx_iqcal_fail; - } - - for (j = 0; j < 3; j++) { - u32 idx = 2 * j, offset = 4 * (3 * im + j); - - REG_RMW_FIELD(ah, - AR_PHY_CHAN_INFO_MEMORY, - AR_PHY_CHAN_INFO_TAB_S2_READ, - 0); - - /* 32 bits */ - iq_res[idx] = REG_READ(ah, - chan_info_tab[i] + - offset); - - REG_RMW_FIELD(ah, - AR_PHY_CHAN_INFO_MEMORY, - AR_PHY_CHAN_INFO_TAB_S2_READ, - 1); - - /* 16 bits */ - iq_res[idx + 1] = 0xffff & REG_READ(ah, - chan_info_tab[i] + offset); - - DBG2("ath9k: " - "IQ RES[%d]=0x%x" - "IQ_RES[%d]=0x%x\n", - idx, iq_res[idx], idx + 1, - iq_res[idx + 1]); - } - - if (!ar9003_hw_calc_iq_corr(ah, i, iq_res, - coeff.iqc_coeff)) { - DBG("ath9k: " - "Failed in calculation of \ - IQ correction.\n"); - goto tx_iqcal_fail; - } - - coeff.mag_coeff[i][im] = coeff.iqc_coeff[0] & 0x7f; - coeff.phs_coeff[i][im] = - (coeff.iqc_coeff[0] >> 7) & 0x7f; - - if (coeff.mag_coeff[i][im] > 63) - coeff.mag_coeff[i][im] -= 128; - if (coeff.phs_coeff[i][im] > 63) - coeff.phs_coeff[i][im] -= 128; - } - } - ar9003_hw_tx_iqcal_load_avg_2_passes(ah, num_chains, &coeff); - - return; - -tx_iqcal_fail: - DBG("ath9k: Tx IQ Cal failed\n"); - return; -} -static int ar9003_hw_init_cal(struct ath_hw *ah, - struct ath9k_channel *chan __unused) -{ - struct ath9k_hw_capabilities *pCap = &ah->caps; - int val; - int txiqcal_done = 0; - - val = REG_READ(ah, AR_ENT_OTP); - DBG2("ath9k: ath9k: AR_ENT_OTP 0x%x\n", val); - - /* Configure rx/tx chains before running AGC/TxiQ cals */ - if (val & AR_ENT_OTP_CHAIN2_DISABLE) - ar9003_hw_set_chain_masks(ah, 0x3, 0x3); - else - ar9003_hw_set_chain_masks(ah, pCap->rx_chainmask, - pCap->tx_chainmask); - - /* Do Tx IQ Calibration */ - REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1, - AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT, - DELPT); - - /* - * For AR9485 or later chips, TxIQ cal runs as part of - * AGC calibration - */ - if (AR_SREV_9485_OR_LATER(ah)) - txiqcal_done = 1; - else { - txiqcal_done = ar9003_hw_tx_iq_cal_run(ah); - REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS); - udelay(5); - REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN); - } - - /* Calibrate the AGC */ - REG_WRITE(ah, AR_PHY_AGC_CONTROL, - REG_READ(ah, AR_PHY_AGC_CONTROL) | - AR_PHY_AGC_CONTROL_CAL); - - /* Poll for offset calibration complete */ - if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL, - 0, AH_WAIT_TIMEOUT)) { - DBG("ath9k: " - "offset calibration failed to complete in 1ms; noisy environment?\n"); - return 0; - } - - if (txiqcal_done) - ar9003_hw_tx_iq_cal_post_proc(ah); - - /* Revert chainmasks to their original values before NF cal */ - ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask); - - ath9k_hw_start_nfcal(ah, 1); - - /* Initialize list pointers */ - ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL; - ah->supp_cals = IQ_MISMATCH_CAL; - - if (ah->supp_cals & IQ_MISMATCH_CAL) { - INIT_CAL(&ah->iq_caldata); - INSERT_CAL(ah, &ah->iq_caldata); - DBG2("ath9k: " - "enabling IQ Calibration.\n"); - } - - if (ah->supp_cals & TEMP_COMP_CAL) { - INIT_CAL(&ah->tempCompCalData); - INSERT_CAL(ah, &ah->tempCompCalData); - DBG2("ath9k: " - "enabling Temperature Compensation Calibration.\n"); - } - - /* Initialize current pointer to first element in list */ - ah->cal_list_curr = ah->cal_list; - - if (ah->cal_list_curr) - ath9k_hw_reset_calibration(ah, ah->cal_list_curr); - - if (ah->caldata) - ah->caldata->CalValid = 0; - - return 1; -} - -void ar9003_hw_attach_calib_ops(struct ath_hw *ah) -{ - struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); - struct ath_hw_ops *ops = ath9k_hw_ops(ah); - - priv_ops->init_cal_settings = ar9003_hw_init_cal_settings; - priv_ops->init_cal = ar9003_hw_init_cal; - priv_ops->setup_calibration = ar9003_hw_setup_calibration; - - ops->calibrate = ar9003_hw_calibrate; -} |