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/* Common header for Atheros 802.11n base driver cores */
  25
  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)
  29
  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);      \
  41} while (0)
  42#define ATH_EP_RND(x, mul)                                              \
  43        (((x) + ((mul)/2)) / (mul))
  44
  45int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
  46void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan,
  47                               struct cfg80211_chan_def *chandef);
  48struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
  49                                               struct ath_hw *ah);
  50int ath9k_cmn_count_streams(unsigned int chainmask, int max);
  51void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
  52                                  enum ath_stomp_type stomp_type);
  53void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
  54                            u16 new_txpow, u16 *txpower);
  55void ath9k_cmn_init_crypto(struct ath_hw *ah);
  56