LXR linux/drivers/net/wireless/ath/ath9k/common.h

   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#include "common-debug.h"
  27#include "common-spectral.h"
  28
  29/* Common header for Atheros 802.11n base driver cores */
  30
  31#define WME_BA_BMP_SIZE         64
  32#define WME_MAX_BA              WME_BA_BMP_SIZE
  33#define ATH_TID_MAX_BUFS        (2 * WME_MAX_BA)
  34
  35#define ATH_RSSI_DUMMY_MARKER   127
  36#define ATH_RSSI_LPF_LEN                10
  37#define RSSI_LPF_THRESHOLD              -20
  38#define ATH_RSSI_EP_MULTIPLIER     (1<<7)
  39#define ATH_EP_MUL(x, mul)         ((x) * (mul))
  40#define ATH_RSSI_IN(x)             (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
  41#define ATH_LPF_RSSI(x, y, len) \
  42    ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
  43#define ATH_RSSI_LPF(x, y) do {                                         \
  44    if ((y) >= RSSI_LPF_THRESHOLD)                                      \
  45        x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN);      \
  46} while (0)
  47#define ATH_EP_RND(x, mul)                                              \
  48        (((x) + ((mul)/2)) / (mul))
  49
  50#define IEEE80211_MS_TO_TU(x)   (((x) * 1000) / 1024)
  51
  52struct ath_beacon_config {
  53        int beacon_interval;
  54        u16 dtim_period;
  55        u16 bmiss_timeout;
  56        u8 dtim_count;
  57        u8 enable_beacon;
  58        bool ibss_creator;
  59        u32 nexttbtt;
  60        u32 intval;
  61};
  62
  63bool ath9k_cmn_rx_accept(struct ath_common *common,
  64                         struct ieee80211_hdr *hdr,
  65                         struct ieee80211_rx_status *rxs,
  66                         struct ath_rx_status *rx_stats,
  67                         bool *decrypt_error,
  68                         unsigned int rxfilter);
  69void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
  70                                  struct sk_buff *skb,
  71                                  struct ath_rx_status *rx_stats,
  72                                  struct ieee80211_rx_status *rxs,
  73                                  bool decrypt_error);
  74int ath9k_cmn_process_rate(struct ath_common *common,
  75                           struct ieee80211_hw *hw,
  76                           struct ath_rx_status *rx_stats,
  77                           struct ieee80211_rx_status *rxs);
  78void ath9k_cmn_process_rssi(struct ath_common *common,
  79                            struct ieee80211_hw *hw,
  80                            struct ath_rx_status *rx_stats,
  81                            struct ieee80211_rx_status *rxs);
  82int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
  83struct ath9k_channel *ath9k_cmn_get_channel(struct ieee80211_hw *hw,
  84                                            struct ath_hw *ah,
  85                                            struct cfg80211_chan_def *chandef);
  86int ath9k_cmn_count_streams(unsigned int chainmask, int max);
  87void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
  88                                  enum ath_stomp_type stomp_type);
  89void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
  90                            u16 new_txpow, u16 *txpower);
  91void ath9k_cmn_init_crypto(struct ath_hw *ah);
  92