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 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 69 enum ath9k_cal_state { 70 CAL_INACTIVE, 71 CAL_WAITING, 72 CAL_RUNNING, 73 CAL_DONE 74 }; 75 76 #define MIN_CAL_SAMPLES 1 77 #define MAX_CAL_SAMPLES 64 78 #define INIT_LOG_COUNT 5 79 #define PER_MIN_LOG_COUNT 2 80 #define PER_MAX_LOG_COUNT 10 81 82 struct 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 90 struct ath9k_cal_list { 91 const struct ath9k_percal_data *calData; 92 enum ath9k_cal_state calState; 93 struct ath9k_cal_list *calNext; 94 }; 95 96 struct 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 8 104 struct 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 }; 109 110 bool ath9k_hw_reset_calvalid(struct ath_hw *ah); 111 void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update); 112 int ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan); 113 bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan); 114 void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah, 115 struct ath9k_channel *chan); 116 void ath9k_hw_bstuck_nfcal(struct ath_hw *ah); 117 void ath9k_hw_reset_calibration(struct ath_hw *ah, 118 struct ath9k_cal_list *currCal); 119 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan, 120 s16 nf); 121 122 123 #endif /* CALIB_H */ 124