[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"

/* 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   0x127
#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)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))

int ath9k_cmn_padpos(__le16 frame_control);
int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan,
			       struct ieee80211_channel *chan,
			       enum nl80211_channel_type channel_type);
struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
					       struct ath_hw *ah);
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 LR	23
	24	/* Common header for Atheros 802.11n base driver cores */
	25
db86f07e LR	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
db86f07e LR	30	#define ATH_RSSI_DUMMY_MARKER 0x127
	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)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
	44
1bc14880	45	int ath9k_cmn_padpos(__le16 frame_control);
fb9987d0	46	int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
babcbc29 FF	47	void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan,
	48	struct ieee80211_channel *chan,
	49	enum nl80211_channel_type channel_type);
fb9987d0 S	50	struct ath9k_channel ath9k_cmn_get_curchannel(struct ieee80211_hw hw,
fb9987d0 S	51	struct ath_hw *ah);
61389f3e	52	int ath9k_cmn_count_streams(unsigned int chainmask, int max);
d99eeb87 VN	53	void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
d99eeb87 VN	54	enum ath_stomp_type stomp_type);
5048e8c3 RM	55	void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
5048e8c3 RM	56	u16 new_txpow, u16 *txpower);
f82b4bde	57	void ath9k_cmn_init_crypto(struct ath_hw *ah);