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 #include "common-init.h"
25 #include "common-beacon.h"
26 #include "common-debug.h"
28 /* Common header for Atheros 802.11n base driver cores */
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)
34 #define ATH_RSSI_DUMMY_MARKER 127
35 #define ATH_RSSI_LPF_LEN 10
36 #define RSSI_LPF_THRESHOLD -20
37 #define ATH_RSSI_EP_MULTIPLIER (1<<7)
38 #define ATH_EP_MUL(x, mul) ((x) * (mul))
39 #define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
40 #define ATH_LPF_RSSI(x, y, len) \
41 ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
42 #define ATH_RSSI_LPF(x, y) do { \
43 if ((y) >= RSSI_LPF_THRESHOLD) \
44 x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \
46 #define ATH_EP_RND(x, mul) \
47 (((x) + ((mul)/2)) / (mul))
49 #define IEEE80211_MS_TO_TU(x) (((x) * 1000) / 1024)
51 struct ath_beacon_config {
62 bool ath9k_cmn_rx_accept(struct ath_common *common,
63 struct ieee80211_hdr *hdr,
64 struct ieee80211_rx_status *rxs,
65 struct ath_rx_status *rx_stats,
67 unsigned int rxfilter);
68 void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
70 struct ath_rx_status *rx_stats,
71 struct ieee80211_rx_status *rxs,
73 int ath9k_cmn_process_rate(struct ath_common *common,
74 struct ieee80211_hw *hw,
75 struct ath_rx_status *rx_stats,
76 struct ieee80211_rx_status *rxs);
77 void ath9k_cmn_process_rssi(struct ath_common *common,
78 struct ieee80211_hw *hw,
79 struct ath_rx_status *rx_stats,
80 struct ieee80211_rx_status *rxs);
81 int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
82 struct ath9k_channel *ath9k_cmn_get_channel(struct ieee80211_hw *hw,
84 struct cfg80211_chan_def *chandef);
85 int ath9k_cmn_count_streams(unsigned int chainmask, int max);
86 void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
87 enum ath_stomp_type stomp_type);
88 void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
89 u16 new_txpow, u16 *txpower);
90 void ath9k_cmn_init_crypto(struct ath_hw *ah);