1 /* 2 * Copyright (c) 2009 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 #include "../debug.h" 21 22 #include "hw.h" 23 #include "hw-ops.h" 24 25 /* Common header for Atheros 802.11n base driver cores */ 26 27 #define IEEE80211_WEP_NKID 4 28 29 #define WME_NUM_TID 16 30 #define WME_BA_BMP_SIZE 64 31 #define WME_MAX_BA WME_BA_BMP_SIZE 32 #define ATH_TID_MAX_BUFS (2 * WME_MAX_BA) 33 34 #define WME_AC_BE 0 35 #define WME_AC_BK 1 36 #define WME_AC_VI 2 37 #define WME_AC_VO 3 38 #define WME_NUM_AC 4 39 40 #define ATH_RSSI_DUMMY_MARKER 0x127 41 #define ATH_RSSI_LPF_LEN 10 42 #define RSSI_LPF_THRESHOLD -20 43 #define ATH_RSSI_EP_MULTIPLIER (1<<7) 44 #define ATH_EP_MUL(x, mul) ((x) * (mul)) 45 #define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER)) 46 #define ATH_LPF_RSSI(x, y, len) \ 47 ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y)) 48 #define ATH_RSSI_LPF(x, y) do { \ 49 if ((y) >= RSSI_LPF_THRESHOLD) \ 50 x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \ 51 } while (0) 52 #define ATH_EP_RND(x, mul) \ 53 ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul)) 54 55 int ath9k_cmn_padpos(__le16 frame_control); 56 int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb); 57 void ath9k_cmn_update_ichannel(struct ieee80211_hw *hw, 58 struct ath9k_channel *ichan); 59 struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw, 60 struct ath_hw *ah); 61 int ath9k_cmn_key_config(struct ath_common *common, 62 struct ieee80211_vif *vif, 63 struct ieee80211_sta *sta, 64 struct ieee80211_key_conf *key); 65 void ath9k_cmn_key_delete(struct ath_common *common, 66 struct ieee80211_key_conf *key); 67 int ath9k_cmn_count_streams(unsigned int chainmask, int max); 68