1 /* 2 * Copyright (c) 2008-2011 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #ifndef CALIB_H 18 #define CALIB_H 19 20 #include "hw.h" 21 22 #define AR_PHY_CCA_FILTERWINDOW_LENGTH 5 23 24 /* Internal noise floor can vary by about 6db depending on the frequency */ 25 #define ATH9K_NF_CAL_NOISE_THRESH 6 26 27 #define NUM_NF_READINGS 6 28 #define ATH9K_NF_CAL_HIST_MAX 5 29 30 struct ar5416IniArray { 31 u32 *ia_array; 32 u32 ia_rows; 33 u32 ia_columns; 34 }; 35 36 #define INIT_INI_ARRAY(iniarray, array) do { \ 37 (iniarray)->ia_array = (u32 *)(array); \ 38 (iniarray)->ia_rows = ARRAY_SIZE(array); \ 39 (iniarray)->ia_columns = ARRAY_SIZE(array[0]); \ 40 } while (0) 41 42 #define INI_RA(iniarray, row, column) \ 43 (((iniarray)->ia_array)[(row) * ((iniarray)->ia_columns) + (column)]) 44 45 #define INIT_CAL(_perCal) do { \ 46 (_perCal)->calState = CAL_WAITING; \ 47 (_perCal)->calNext = NULL; \ 48 } while (0) 49 50 #define INSERT_CAL(_ahp, _perCal) \ 51 do { \ 52 if ((_ahp)->cal_list_last == NULL) { \ 53 (_ahp)->cal_list = \ 54 (_ahp)->cal_list_last = (_perCal); \ 55 ((_ahp)->cal_list_last)->calNext = (_perCal); \ 56 } else { \ 57 ((_ahp)->cal_list_last)->calNext = (_perCal); \ 58 (_ahp)->cal_list_last = (_perCal); \ 59 (_perCal)->calNext = (_ahp)->cal_list; \ 60 } \ 61 } while (0) 62 63 enum ath9k_cal_state { 64 CAL_INACTIVE, 65 CAL_WAITING, 66 CAL_RUNNING, 67 CAL_DONE 68 }; 69 70 #define MIN_CAL_SAMPLES 1 71 #define MAX_CAL_SAMPLES 64 72 #define INIT_LOG_COUNT 5 73 #define PER_MIN_LOG_COUNT 2 74 #define PER_MAX_LOG_COUNT 10 75 76 struct ath9k_percal_data { 77 u32 calType; 78 u32 calNumSamples; 79 u32 calCountMax; 80 void (*calCollect) (struct ath_hw *); 81 void (*calPostProc) (struct ath_hw *, u8); 82 }; 83 84 struct ath9k_cal_list { 85 const struct ath9k_percal_data *calData; 86 enum ath9k_cal_state calState; 87 struct ath9k_cal_list *calNext; 88 }; 89 90 struct ath9k_nfcal_hist { 91 int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX]; 92 u8 currIndex; 93 int16_t privNF; 94 u8 invalidNFcount; 95 }; 96 97 #define MAX_PACAL_SKIPCOUNT 8 98 struct ath9k_pacal_info{ 99 int32_t prev_offset; /* Previous value of PA offset value */ 100 int8_t max_skipcount; /* Max No. of times PACAL can be skipped */ 101 int8_t skipcount; /* No. of times the PACAL to be skipped */ 102 }; 103 104 bool ath9k_hw_reset_calvalid(struct ath_hw *ah); 105 void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update); 106 void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan); 107 bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan); 108 void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah, 109 struct ath9k_channel *chan); 110 void ath9k_hw_bstuck_nfcal(struct ath_hw *ah); 111 void ath9k_hw_reset_calibration(struct ath_hw *ah, 112 struct ath9k_cal_list *currCal); 113 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan); 114 115 116 #endif /* CALIB_H */ 117