Linux Kernel  3.7.1
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common.h
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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 
55 void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan,
56  struct ieee80211_channel *chan,
59  struct ath_hw *ah);
60 int ath9k_cmn_count_streams(unsigned int chainmask, int max);
62  enum ath_stomp_type stomp_type);
63 void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
64  u16 new_txpow, u16 *txpower);
65 void ath9k_cmn_init_crypto(struct ath_hw *ah);