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2111ac0d88
This is an Adaptive Noise Imunity (ANI) implementation for ath5k. I have looked at both ath9k and HAL sources (they are nearly the same), and even though i have implemented some things differently, the basic algorithm is practically the same, for now. I hope that this can serve as a clean start to improve the algorithm later. This also adds a possibility to manually control ANI settings, right now only thru a debugfs file: * set lowest sensitivity (=highest noise immunity): echo sens-low > /sys/kernel/debug/ath5k/phy0/ani * set highest sensitivity (=lowest noise immunity): echo sens-high > /sys/kernel/debug/ath5k/phy0/ani * automatically control immunity (default): echo ani-on > /sys/kernel/debug/ath5k/phy0/ani * to see the parameters in use and watch them change: cat /sys/kernel/debug/ath5k/phy0/ani Manually setting sensitivity will turn the automatic control off. You can also control each of the five immunity parameters (noise immunity, spur immunity, firstep, ofdm weak signal detection, cck weak signal detection) manually thru the debugfs file. This is tested on AR5414 and nearly doubles the thruput in a noisy 2GHz band. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
208 lines
7 KiB
C
208 lines
7 KiB
C
/*
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* Copyright (c) 2007 Bruno Randolf <bruno@thinktube.com>
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*
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* This file is free software: you may copy, redistribute and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 2 of the License, or (at your
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* option) any later version.
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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*
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* Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
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* Copyright (c) 2004-2005 Atheros Communications, Inc.
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* Copyright (c) 2006 Devicescape Software, Inc.
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* Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com>
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* Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*/
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#ifndef _ATH5K_DEBUG_H
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#define _ATH5K_DEBUG_H
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struct ath5k_softc;
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struct ath5k_hw;
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struct sk_buff;
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struct ath5k_buf;
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struct ath5k_dbg_info {
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unsigned int level; /* debug level */
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/* debugfs entries */
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struct dentry *debugfs_phydir;
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struct dentry *debugfs_debug;
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struct dentry *debugfs_registers;
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struct dentry *debugfs_beacon;
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struct dentry *debugfs_reset;
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struct dentry *debugfs_antenna;
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struct dentry *debugfs_frameerrors;
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struct dentry *debugfs_ani;
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};
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/**
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* enum ath5k_debug_level - ath5k debug level
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*
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* @ATH5K_DEBUG_RESET: reset processing
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* @ATH5K_DEBUG_INTR: interrupt handling
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* @ATH5K_DEBUG_MODE: mode init/setup
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* @ATH5K_DEBUG_XMIT: basic xmit operation
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* @ATH5K_DEBUG_BEACON: beacon handling
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* @ATH5K_DEBUG_CALIBRATE: periodic calibration
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* @ATH5K_DEBUG_TXPOWER: transmit power setting
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* @ATH5K_DEBUG_LED: led management
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* @ATH5K_DEBUG_DUMP_RX: print received skb content
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* @ATH5K_DEBUG_DUMP_TX: print transmit skb content
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* @ATH5K_DEBUG_DUMPBANDS: dump bands
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* @ATH5K_DEBUG_TRACE: trace function calls
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* @ATH5K_DEBUG_ANY: show at any debug level
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*
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* The debug level is used to control the amount and type of debugging output
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* we want to see. The debug level is given in calls to ATH5K_DBG to specify
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* where the message should appear, and the user can control the debugging
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* messages he wants to see, either by the module parameter 'debug' on module
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* load, or dynamically by using debugfs 'ath5k/phyX/debug'. these levels can
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* be combined together by bitwise OR.
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*/
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enum ath5k_debug_level {
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ATH5K_DEBUG_RESET = 0x00000001,
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ATH5K_DEBUG_INTR = 0x00000002,
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ATH5K_DEBUG_MODE = 0x00000004,
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ATH5K_DEBUG_XMIT = 0x00000008,
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ATH5K_DEBUG_BEACON = 0x00000010,
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ATH5K_DEBUG_CALIBRATE = 0x00000020,
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ATH5K_DEBUG_TXPOWER = 0x00000040,
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ATH5K_DEBUG_LED = 0x00000080,
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ATH5K_DEBUG_DUMP_RX = 0x00000100,
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ATH5K_DEBUG_DUMP_TX = 0x00000200,
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ATH5K_DEBUG_DUMPBANDS = 0x00000400,
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ATH5K_DEBUG_TRACE = 0x00001000,
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ATH5K_DEBUG_ANI = 0x00002000,
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ATH5K_DEBUG_ANY = 0xffffffff
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};
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#ifdef CONFIG_ATH5K_DEBUG
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#define ATH5K_TRACE(_sc) do { \
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if (unlikely((_sc)->debug.level & ATH5K_DEBUG_TRACE)) \
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printk(KERN_DEBUG "ath5k trace %s:%d\n", __func__, __LINE__); \
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} while (0)
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#define ATH5K_DBG(_sc, _m, _fmt, ...) do { \
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if (unlikely((_sc)->debug.level & (_m) && net_ratelimit())) \
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ATH5K_PRINTK(_sc, KERN_DEBUG, "(%s:%d): " _fmt, \
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__func__, __LINE__, ##__VA_ARGS__); \
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} while (0)
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#define ATH5K_DBG_UNLIMIT(_sc, _m, _fmt, ...) do { \
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if (unlikely((_sc)->debug.level & (_m))) \
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ATH5K_PRINTK(_sc, KERN_DEBUG, "(%s:%d): " _fmt, \
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__func__, __LINE__, ##__VA_ARGS__); \
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} while (0)
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void
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ath5k_debug_init(void);
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void
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ath5k_debug_init_device(struct ath5k_softc *sc);
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void
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ath5k_debug_finish(void);
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void
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ath5k_debug_finish_device(struct ath5k_softc *sc);
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void
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ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah);
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void
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ath5k_debug_dump_bands(struct ath5k_softc *sc);
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void
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ath5k_debug_dump_skb(struct ath5k_softc *sc,
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struct sk_buff *skb, const char *prefix, int tx);
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void
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ath5k_debug_printtxbuf(struct ath5k_softc *sc, struct ath5k_buf *bf);
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#else /* no debugging */
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#include <linux/compiler.h>
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#define ATH5K_TRACE(_sc) typecheck(struct ath5k_softc *, (_sc))
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static inline void __attribute__ ((format (printf, 3, 4)))
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ATH5K_DBG(struct ath5k_softc *sc, unsigned int m, const char *fmt, ...) {}
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static inline void __attribute__ ((format (printf, 3, 4)))
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ATH5K_DBG_UNLIMIT(struct ath5k_softc *sc, unsigned int m, const char *fmt, ...)
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{}
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static inline void
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ath5k_debug_init(void) {}
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static inline void
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ath5k_debug_init_device(struct ath5k_softc *sc) {}
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static inline void
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ath5k_debug_finish(void) {}
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static inline void
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ath5k_debug_finish_device(struct ath5k_softc *sc) {}
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static inline void
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ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah) {}
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static inline void
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ath5k_debug_dump_bands(struct ath5k_softc *sc) {}
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static inline void
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ath5k_debug_dump_skb(struct ath5k_softc *sc,
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struct sk_buff *skb, const char *prefix, int tx) {}
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static inline void
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ath5k_debug_printtxbuf(struct ath5k_softc *sc, struct ath5k_buf *bf) {}
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#endif /* ifdef CONFIG_ATH5K_DEBUG */
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#endif /* ifndef _ATH5K_DEBUG_H */
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