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)/2)) / (mul))
45 bool ath9k_cmn_rx_accept(struct ath_common *common,
46 struct ieee80211_hdr *hdr,
47 struct ieee80211_rx_status *rxs,
48 struct ath_rx_status *rx_stats,
50 unsigned int rxfilter);
51 void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
53 struct ath_rx_status *rx_stats,
54 struct ieee80211_rx_status *rxs,
56 int ath9k_cmn_process_rate(struct ath_common *common,
57 struct ieee80211_hw *hw,
58 struct ath_rx_status *rx_stats,
59 struct ieee80211_rx_status *rxs);
60 void ath9k_cmn_process_rssi(struct ath_common *common,
61 struct ieee80211_hw *hw,
62 struct ath_rx_status *rx_stats,
63 struct ieee80211_rx_status *rxs);
64 int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
65 struct ath9k_channel *ath9k_cmn_get_channel(struct ieee80211_hw *hw,
67 struct cfg80211_chan_def *chandef);
68 int ath9k_cmn_count_streams(unsigned int chainmask, int max);
69 void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
70 enum ath_stomp_type stomp_type);
71 void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
72 u16 new_txpow, u16 *txpower);
73 void ath9k_cmn_init_crypto(struct ath_hw *ah);