2 * Copyright (c) 2009-2011 Atheros Communications Inc.
4 * Modified for iPXE by Scott K Logan <logans@cottsay.net> July 2011
5 * Original from Linux kernel 3.0.1
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 FILE_LICENCE ( BSD2 );
27 /* Common header for Atheros 802.11n base driver cores */
29 #define WME_NUM_TID 16
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)
37 #define ATH_RSSI_DUMMY_MARKER 0x127
38 #define ATH_RSSI_LPF_LEN 10
39 #define RSSI_LPF_THRESHOLD -20
40 #define ATH_RSSI_EP_MULTIPLIER (1<<7)
41 #define ATH_EP_MUL(x, mul) ((x) * (mul))
42 #define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
43 #define ATH_LPF_RSSI(x, y, len) \
44 ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
45 #define ATH_RSSI_LPF(x, y) do { \
46 if ((y) >= RSSI_LPF_THRESHOLD) \
47 x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \
49 #define ATH_EP_RND(x, mul) \
50 ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
53 void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan,
54 struct net80211_channel *chan);
55 struct ath9k_channel *ath9k_cmn_get_curchannel(struct net80211_device *dev,
57 void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
58 u16 new_txpow, u16 *txpower);