[deliverable/linux.git] / drivers / net / wireless / ath / ath9k / common.h

/*
 * Copyright (c) 2009-2011 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <net/mac80211.h>

#include "../ath.h"

#include "hw.h"
#include "hw-ops.h"

#include "common-init.h"
#include "common-beacon.h"
#include "common-debug.h"

/* Common header for Atheros 802.11n base driver cores */

#define WME_BA_BMP_SIZE         64
#define WME_MAX_BA              WME_BA_BMP_SIZE
#define ATH_TID_MAX_BUFS        (2 * WME_MAX_BA)

#define ATH_RSSI_DUMMY_MARKER   127
#define ATH_RSSI_LPF_LEN 		10
#define RSSI_LPF_THRESHOLD		-20
#define ATH_RSSI_EP_MULTIPLIER     (1<<7)
#define ATH_EP_MUL(x, mul)         ((x) * (mul))
#define ATH_RSSI_IN(x)             (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
#define ATH_LPF_RSSI(x, y, len) \
    ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
#define ATH_RSSI_LPF(x, y) do {                     			\
    if ((y) >= RSSI_LPF_THRESHOLD)                         		\
	x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN);  	\
} while (0)
#define ATH_EP_RND(x, mul) 						\
	(((x) + ((mul)/2)) / (mul))

#define IEEE80211_MS_TO_TU(x)   (((x) * 1000) / 1024)

struct ath_beacon_config {
	int beacon_interval;
	u16 dtim_period;
	u16 bmiss_timeout;
	u8 dtim_count;
	bool enable_beacon;
	bool ibss_creator;
	u32 nexttbtt;
	u32 intval;
};

bool ath9k_cmn_rx_accept(struct ath_common *common,
			 struct ieee80211_hdr *hdr,
			 struct ieee80211_rx_status *rxs,
			 struct ath_rx_status *rx_stats,
			 bool *decrypt_error,
			 unsigned int rxfilter);
void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
				  struct sk_buff *skb,
				  struct ath_rx_status *rx_stats,
				  struct ieee80211_rx_status *rxs,
				  bool decrypt_error);
int ath9k_cmn_process_rate(struct ath_common *common,
			   struct ieee80211_hw *hw,
			   struct ath_rx_status *rx_stats,
			   struct ieee80211_rx_status *rxs);
void ath9k_cmn_process_rssi(struct ath_common *common,
			    struct ieee80211_hw *hw,
			    struct ath_rx_status *rx_stats,
			    struct ieee80211_rx_status *rxs);
int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
struct ath9k_channel *ath9k_cmn_get_channel(struct ieee80211_hw *hw,
					    struct ath_hw *ah,
					    struct cfg80211_chan_def *chandef);
int ath9k_cmn_count_streams(unsigned int chainmask, int max);
void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
				  enum ath_stomp_type stomp_type);
void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
			    u16 new_txpow, u16 *txpower);
void ath9k_cmn_init_crypto(struct ath_hw *ah);
Commit	Line	Data
db86f07e	1	/*
5b68138e	2	* Copyright (c) 2009-2011 Atheros Communications Inc.
db86f07e LR	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"
db86f07e LR	20
db86f07e LR	21	#include "hw.h"
d70357d5	22	#include "hw-ops.h"
db86f07e	23
13f71050	24	#include "common-init.h"
cbbdf2ae	25	#include "common-beacon.h"
f2c3c952	26	#include "common-debug.h"
13f71050	27
db86f07e LR	28	/* Common header for Atheros 802.11n base driver cores */
db86f07e LR	29
db86f07e LR	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)
	33
a3d63cad	34	#define ATH_RSSI_DUMMY_MARKER 127
db86f07e LR	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); \
	45	} while (0)
	46	#define ATH_EP_RND(x, mul) \
4ba910db	47	(((x) + ((mul)/2)) / (mul))
db86f07e	48
c7303263 OR	49	#define IEEE80211_MS_TO_TU(x) (((x) * 1000) / 1024)
c7303263 OR	50
fd0ab793 OR	51	struct ath_beacon_config {
	52	int beacon_interval;
	53	u16 dtim_period;
	54	u16 bmiss_timeout;
	55	u8 dtim_count;
	56	bool enable_beacon;
	57	bool ibss_creator;
a2030b9d OR	58	u32 nexttbtt;
a2030b9d OR	59	u32 intval;
fd0ab793 OR	60	};
fd0ab793 OR	61
6438696e OR	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,
	66	bool *decrypt_error,
	67	unsigned int rxfilter);
5a078fcb OR	68	void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
	69	struct sk_buff *skb,
	70	struct ath_rx_status *rx_stats,
	71	struct ieee80211_rx_status *rxs,
	72	bool decrypt_error);
12746036 OR	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);
32efb0cc OR	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);
fb9987d0	81	int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
2297f1c7 FF	82	struct ath9k_channel ath9k_cmn_get_channel(struct ieee80211_hw hw,
	83	struct ath_hw *ah,
	84	struct cfg80211_chan_def *chandef);
61389f3e	85	int ath9k_cmn_count_streams(unsigned int chainmask, int max);
d99eeb87 VN	86	void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
d99eeb87 VN	87	enum ath_stomp_type stomp_type);
5048e8c3 RM	88	void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
5048e8c3 RM	89	u16 new_txpow, u16 *txpower);
f82b4bde	90	void ath9k_cmn_init_crypto(struct ath_hw *ah);