124 lines · c
1/*2 * Copyright (c) 2008-2011 Atheros Communications Inc.3 *4 * Permission to use, copy, modify, and/or distribute this software for any5 * purpose with or without fee is hereby granted, provided that the above6 * copyright notice and this permission notice appear in all copies.7 *8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.15 */16 17#ifndef CALIB_H18#define CALIB_H19 20#include "hw.h"21 22#define AR_PHY_CCA_FILTERWINDOW_LENGTH 523 24/* Internal noise floor can vary by about 6db depending on the frequency */25#define ATH9K_NF_CAL_NOISE_THRESH 626 27#define NUM_NF_READINGS 628#define ATH9K_NF_CAL_HIST_MAX 529 30struct ar5416IniArray {31 u32 *ia_array;32 u32 ia_rows;33 u32 ia_columns;34};35 36#define STATIC_INI_ARRAY(array) { \37 .ia_array = (u32 *)(array), \38 .ia_rows = ARRAY_SIZE(array), \39 .ia_columns = ARRAY_SIZE(array[0]), \40 }41 42#define INIT_INI_ARRAY(iniarray, array) do { \43 (iniarray)->ia_array = (u32 *)(array); \44 (iniarray)->ia_rows = ARRAY_SIZE(array); \45 (iniarray)->ia_columns = ARRAY_SIZE(array[0]); \46 } while (0)47 48#define INI_RA(iniarray, row, column) \49 (((iniarray)->ia_array)[(row) * ((iniarray)->ia_columns) + (column)])50 51#define INIT_CAL(_perCal) do { \52 (_perCal)->calState = CAL_WAITING; \53 (_perCal)->calNext = NULL; \54 } while (0)55 56#define INSERT_CAL(_ahp, _perCal) \57 do { \58 if ((_ahp)->cal_list_last == NULL) { \59 (_ahp)->cal_list = \60 (_ahp)->cal_list_last = (_perCal); \61 ((_ahp)->cal_list_last)->calNext = (_perCal); \62 } else { \63 ((_ahp)->cal_list_last)->calNext = (_perCal); \64 (_ahp)->cal_list_last = (_perCal); \65 (_perCal)->calNext = (_ahp)->cal_list; \66 } \67 } while (0)68 69enum ath9k_cal_state {70 CAL_INACTIVE,71 CAL_WAITING,72 CAL_RUNNING,73 CAL_DONE74};75 76#define MIN_CAL_SAMPLES 177#define MAX_CAL_SAMPLES 6478#define INIT_LOG_COUNT 579#define PER_MIN_LOG_COUNT 280#define PER_MAX_LOG_COUNT 1081 82struct ath9k_percal_data {83 u32 calType;84 u32 calNumSamples;85 u32 calCountMax;86 void (*calCollect) (struct ath_hw *);87 void (*calPostProc) (struct ath_hw *, u8);88};89 90struct ath9k_cal_list {91 const struct ath9k_percal_data *calData;92 enum ath9k_cal_state calState;93 struct ath9k_cal_list *calNext;94};95 96struct ath9k_nfcal_hist {97 int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX];98 u8 currIndex;99 int16_t privNF;100 u8 invalidNFcount;101};102 103#define MAX_PACAL_SKIPCOUNT 8104struct ath9k_pacal_info{105 int32_t prev_offset; /* Previous value of PA offset value */106 int8_t max_skipcount; /* Max No. of times PACAL can be skipped */107 int8_t skipcount; /* No. of times the PACAL to be skipped */108};109 110bool ath9k_hw_reset_calvalid(struct ath_hw *ah);111void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update);112int ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);113bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan);114void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,115 struct ath9k_channel *chan);116void ath9k_hw_bstuck_nfcal(struct ath_hw *ah);117void ath9k_hw_reset_calibration(struct ath_hw *ah,118 struct ath9k_cal_list *currCal);119s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan,120 s16 nf);121 122 123#endif /* CALIB_H */124