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_NUM_TID             16
27#define WME_BA_BMP_SIZE         64
28#define WME_MAX_BA              WME_BA_BMP_SIZE
29#define ATH_TID_MAX_BUFS        (2 * WME_MAX_BA)
30
31/* These must match mac80211 skb queue mapping numbers */
32#define WME_AC_VO   0
33#define WME_AC_VI   1
34#define WME_AC_BE   2
35#define WME_AC_BK   3
36#define WME_NUM_AC  4
37
38#define ATH_RSSI_DUMMY_MARKER   0x127
39#define ATH_RSSI_LPF_LEN 		10
40#define RSSI_LPF_THRESHOLD		-20
41#define ATH_RSSI_EP_MULTIPLIER     (1<<7)
42#define ATH_EP_MUL(x, mul)         ((x) * (mul))
43#define ATH_RSSI_IN(x)             (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
44#define ATH_LPF_RSSI(x, y, len) \
45    ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
46#define ATH_RSSI_LPF(x, y) do {                     			\
47    if ((y) >= RSSI_LPF_THRESHOLD)                         		\
48	x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN);  	\
49} while (0)
50#define ATH_EP_RND(x, mul) 						\
51	((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
52
53int ath9k_cmn_padpos(__le16 frame_control);
54int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
55void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan,
56			       struct ieee80211_channel *chan,
57			       enum nl80211_channel_type channel_type);
58struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
59					       struct ath_hw *ah);
60int ath9k_cmn_count_streams(unsigned int chainmask, int max);
61void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
62				  enum ath_stomp_type stomp_type);
63void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
64			    u16 new_txpow, u16 *txpower);
65void ath9k_cmn_init_crypto(struct ath_hw *ah);
66