2 * Copyright (c) 2009-2011 Atheros Communications Inc.
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.
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.
17 #include <net/mac80211.h>
24 /* Common header for Atheros 802.11n base driver cores */
26 #define WME_BA_BMP_SIZE 64
27 #define WME_MAX_BA WME_BA_BMP_SIZE
28 #define ATH_TID_MAX_BUFS (2 * WME_MAX_BA)
30 #define ATH_RSSI_DUMMY_MARKER 127
31 #define ATH_RSSI_LPF_LEN 10
32 #define RSSI_LPF_THRESHOLD -20
33 #define ATH_RSSI_EP_MULTIPLIER (1<<7)
34 #define ATH_EP_MUL(x, mul) ((x) * (mul))
35 #define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
36 #define ATH_LPF_RSSI(x, y, len) \
37 ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
38 #define ATH_RSSI_LPF(x, y) do { \
39 if ((y) >= RSSI_LPF_THRESHOLD) \
40 x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \
42 #define ATH_EP_RND(x, mul) \
43 ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
45 int ath9k_cmn_padpos(__le16 frame_control);
46 int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
47 void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan,
48 struct ieee80211_channel *chan,
49 enum nl80211_channel_type channel_type);
50 struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
52 int ath9k_cmn_count_streams(unsigned int chainmask, int max);
53 void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
54 enum ath_stomp_type stomp_type);
55 void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
56 u16 new_txpow, u16 *txpower);
57 void ath9k_cmn_init_crypto(struct ath_hw *ah);