1 /* 2 * Copyright (c) 2009-2011 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 #include <net/mac80211.h> 18 19 #include "../ath.h" 20 21 #include "hw.h" 22 #include "hw-ops.h" 23 24 #include "common-init.h" 25 #include "common-beacon.h" 26 27 /* Common header for Atheros 802.11n base driver cores */ 28 29 #define WME_BA_BMP_SIZE 64 30 #define WME_MAX_BA WME_BA_BMP_SIZE 31 #define ATH_TID_MAX_BUFS (2 * WME_MAX_BA) 32 33 #define ATH_RSSI_DUMMY_MARKER 127 34 #define ATH_RSSI_LPF_LEN 10 35 #define RSSI_LPF_THRESHOLD -20 36 #define ATH_RSSI_EP_MULTIPLIER (1<<7) 37 #define ATH_EP_MUL(x, mul) ((x) * (mul)) 38 #define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER)) 39 #define ATH_LPF_RSSI(x, y, len) \ 40 ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y)) 41 #define ATH_RSSI_LPF(x, y) do { \ 42 if ((y) >= RSSI_LPF_THRESHOLD) \ 43 x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \ 44 } while (0) 45 #define ATH_EP_RND(x, mul) \ 46 (((x) + ((mul)/2)) / (mul)) 47 48 #define IEEE80211_MS_TO_TU(x) (((x) * 1000) / 1024) 49 50 struct ath_beacon_config { 51 int beacon_interval; 52 u16 dtim_period; 53 u16 bmiss_timeout; 54 u8 dtim_count; 55 bool enable_beacon; 56 bool ibss_creator; 57 u32 nexttbtt; 58 u32 intval; 59 }; 60 61 bool ath9k_cmn_rx_accept(struct ath_common *common, 62 struct ieee80211_hdr *hdr, 63 struct ieee80211_rx_status *rxs, 64 struct ath_rx_status *rx_stats, 65 bool *decrypt_error, 66 unsigned int rxfilter); 67 void ath9k_cmn_rx_skb_postprocess(struct ath_common *common, 68 struct sk_buff *skb, 69 struct ath_rx_status *rx_stats, 70 struct ieee80211_rx_status *rxs, 71 bool decrypt_error); 72 int ath9k_cmn_process_rate(struct ath_common *common, 73 struct ieee80211_hw *hw, 74 struct ath_rx_status *rx_stats, 75 struct ieee80211_rx_status *rxs); 76 void ath9k_cmn_process_rssi(struct ath_common *common, 77 struct ieee80211_hw *hw, 78 struct ath_rx_status *rx_stats, 79 struct ieee80211_rx_status *rxs); 80 int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb); 81 struct ath9k_channel *ath9k_cmn_get_channel(struct ieee80211_hw *hw, 82 struct ath_hw *ah, 83 struct cfg80211_chan_def *chandef); 84 int ath9k_cmn_count_streams(unsigned int chainmask, int max); 85 void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common, 86 enum ath_stomp_type stomp_type); 87 void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow, 88 u16 new_txpow, u16 *txpower); 89 void ath9k_cmn_init_crypto(struct ath_hw *ah); 90