f5eda47f45
This patch distributes the Local Oscillator calibration bursts over time, so that calibration only happens when it's actually needed. Currently we periodically perform a recalibration of the whole table. The table is huge and this takes lots of time. Additionally only small bits of the table are actually needed at a given time. So instead of maintaining a huge table with all possible calibration values, we create dynamic calibration settings that a) We only calibrate when they are actually needed. b) Are cached for some time until they expire. So a recalibration might happen if we need a calibration setting that's not cached, or if the active calibration setting expires. Currently the expire timeout is set to 30 seconds. We may raise that in future. This patch reduces overall memory consumption by nuking the huge static calibration tables. This patch has been tested on several 4306, 4311 and 4318 flavours. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/*
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Broadcom B43 wireless driver
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Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
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Stefano Brivio <stefano.brivio@polimi.it>
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Michael Buesch <mb@bu3sch.de>
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Danny van Dyk <kugelfang@gentoo.org>
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Andreas Jaggi <andreas.jaggi@waterwave.ch>
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Some parts of the code in this file are derived from the ipw2200
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driver Copyright(c) 2003 - 2004 Intel Corporation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef B43_MAIN_H_
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#define B43_MAIN_H_
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#include "b43.h"
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#define P4D_BYT3S(magic, nr_bytes) u8 __p4dding##magic[nr_bytes]
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#define P4D_BYTES(line, nr_bytes) P4D_BYT3S(line, nr_bytes)
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/* Magic helper macro to pad structures. Ignore those above. It's magic. */
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#define PAD_BYTES(nr_bytes) P4D_BYTES( __LINE__ , (nr_bytes))
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extern int b43_modparam_qos;
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/* Lightweight function to convert a frequency (in Mhz) to a channel number. */
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static inline u8 b43_freq_to_channel_5ghz(int freq)
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{
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return ((freq - 5000) / 5);
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}
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static inline u8 b43_freq_to_channel_2ghz(int freq)
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{
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u8 channel;
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if (freq == 2484)
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channel = 14;
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else
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channel = (freq - 2407) / 5;
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return channel;
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}
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/* Lightweight function to convert a channel number to a frequency (in Mhz). */
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static inline int b43_channel_to_freq_5ghz(u8 channel)
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{
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return (5000 + (5 * channel));
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}
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static inline int b43_channel_to_freq_2ghz(u8 channel)
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{
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int freq;
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if (channel == 14)
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freq = 2484;
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else
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freq = 2407 + (5 * channel);
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return freq;
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}
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static inline int b43_is_cck_rate(int rate)
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{
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return (rate == B43_CCK_RATE_1MB ||
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rate == B43_CCK_RATE_2MB ||
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rate == B43_CCK_RATE_5MB || rate == B43_CCK_RATE_11MB);
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}
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static inline int b43_is_ofdm_rate(int rate)
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{
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return !b43_is_cck_rate(rate);
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}
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u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
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u8 antenna_nr);
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void b43_tsf_read(struct b43_wldev *dev, u64 * tsf);
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void b43_tsf_write(struct b43_wldev *dev, u64 tsf);
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u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset);
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u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset);
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void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value);
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void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value);
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u64 b43_hf_read(struct b43_wldev *dev);
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void b43_hf_write(struct b43_wldev *dev, u64 value);
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void b43_dummy_transmission(struct b43_wldev *dev);
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void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags);
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void b43_controller_restart(struct b43_wldev *dev, const char *reason);
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#define B43_PS_ENABLED (1 << 0) /* Force enable hardware power saving */
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#define B43_PS_DISABLED (1 << 1) /* Force disable hardware power saving */
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#define B43_PS_AWAKE (1 << 2) /* Force device awake */
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#define B43_PS_ASLEEP (1 << 3) /* Force device asleep */
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void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags);
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void b43_mac_suspend(struct b43_wldev *dev);
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void b43_mac_enable(struct b43_wldev *dev);
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#endif /* B43_MAIN_H_ */
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