mirror of https://github.com/proski/madwifi
214 lines
7.1 KiB
C
214 lines
7.1 KiB
C
/*
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* Copyright (c) 2008 Bruno Randolf <br1@einfach.org>
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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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* $Id: br1 $
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*/
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#include "ath_hal/ah_devid.h"
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#include "if_media.h"
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#include <net80211/ieee80211_var.h>
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#include "if_athvar.h"
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#include "if_ath_hal.h"
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#include "if_ath_hal_macros.h"
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#include "if_ath_hal_wrappers.h"
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#include "if_ath_hal_extensions.h"
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/* Known SREVs */
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static struct ath5k_srev_name srev_names[] = {
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{ "5210", AR5K_VERSION_VER, AR5K_SREV_VER_AR5210 },
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{ "5311", AR5K_VERSION_VER, AR5K_SREV_VER_AR5311 },
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{ "5311A", AR5K_VERSION_VER, AR5K_SREV_VER_AR5311A },
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{ "5311B", AR5K_VERSION_VER, AR5K_SREV_VER_AR5311B },
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{ "5211", AR5K_VERSION_VER, AR5K_SREV_VER_AR5211 },
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{ "5212", AR5K_VERSION_VER, AR5K_SREV_VER_AR5212 },
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{ "5213", AR5K_VERSION_VER, AR5K_SREV_VER_AR5213 },
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{ "5213A", AR5K_VERSION_VER, AR5K_SREV_VER_AR5213A },
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{ "2413", AR5K_VERSION_VER, AR5K_SREV_VER_AR2413 },
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{ "2414", AR5K_VERSION_VER, AR5K_SREV_VER_AR2414 },
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{ "2424", AR5K_VERSION_VER, AR5K_SREV_VER_AR2424 },
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{ "5424", AR5K_VERSION_VER, AR5K_SREV_VER_AR5424 },
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{ "5413", AR5K_VERSION_VER, AR5K_SREV_VER_AR5413 },
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{ "5414", AR5K_VERSION_VER, AR5K_SREV_VER_AR5414 },
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{ "5416", AR5K_VERSION_VER, AR5K_SREV_VER_AR5416 },
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{ "5418", AR5K_VERSION_VER, AR5K_SREV_VER_AR5418 },
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{ "2425", AR5K_VERSION_VER, AR5K_SREV_VER_AR2425 },
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{ "9160", AR5K_VERSION_VER, AR5K_SREV_VER_AR9160 },
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{ "9280", AR5K_VERSION_VER, AR5K_SREV_VER_AR9280 },
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{ "xxxxx", AR5K_VERSION_VER, AR5K_SREV_UNKNOWN },
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{ "5110", AR5K_VERSION_RAD, AR5K_SREV_RAD_5110 },
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{ "5111", AR5K_VERSION_RAD, AR5K_SREV_RAD_5111 },
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{ "2111", AR5K_VERSION_RAD, AR5K_SREV_RAD_2111 },
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{ "5112", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112 },
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{ "5112A", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112A },
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{ "2112", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112 },
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{ "2112A", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112A },
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{ "SChip", AR5K_VERSION_RAD, AR5K_SREV_RAD_SC0 },
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{ "SChip", AR5K_VERSION_RAD, AR5K_SREV_RAD_SC1 },
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{ "SChip", AR5K_VERSION_RAD, AR5K_SREV_RAD_SC2 },
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{ "5133", AR5K_VERSION_RAD, AR5K_SREV_RAD_5133 },
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{ "xxxxx", AR5K_VERSION_RAD, AR5K_SREV_UNKNOWN },
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};
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#define AR5210_MAGIC 0x19980124
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#define AR5211_MAGIC 0x19570405
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#define AR5212_MAGIC 0x19541014
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#define AR5416_MAGIC 0x20065416
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int
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ar_device(struct ath_softc *sc)
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{
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int magic = sc->sc_ah->ah_magic;
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switch (magic) {
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case AR5210_MAGIC:
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return 5210;
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case AR5211_MAGIC:
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return 5211;
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case AR5212_MAGIC:
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return 5212;
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case AR5416_MAGIC:
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return 5416;
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default:
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printk(KERN_WARNING "unknown HAL magic 0x%08x\n", magic);
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return 0;
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}
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}
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int
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ath_set_ack_bitrate(struct ath_softc *sc, int high)
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{
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if (ar_device(sc) == 5212) {
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/* set ack to be sent at low bit-rate */
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u_int32_t v = AR5K_STA_ID1_BASE_RATE_11B | AR5K_STA_ID1_ACKCTS_6MB;
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if (high)
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ath_reg_write(sc, AR5K_STA_ID1,
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ath_reg_read(sc, AR5K_STA_ID1) & ~v);
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else
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ath_reg_write(sc, AR5K_STA_ID1,
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ath_reg_read(sc, AR5K_STA_ID1) | v);
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return 0;
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}
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return 1;
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}
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const char *
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ath5k_chip_name(enum ath5k_srev_type type, u_int16_t val)
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{
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const char *name = "xxxxx";
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(srev_names); i++) {
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if (srev_names[i].sr_type != type)
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continue;
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if (val < srev_names[i + 1].sr_val) {
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name = srev_names[i].sr_name;
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break;
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}
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}
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return name;
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}
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void
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ath_hw_beacon_stop(struct ath_softc *sc) {
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HAL_BEACON_TIMERS btimers;
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btimers.bt_intval = 0;
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btimers.bt_nexttbtt = 0;
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btimers.bt_nextdba = 0xffffffff;
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btimers.bt_nextswba = 0xffffffff;
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btimers.bt_nextatim = 0;
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ath_hal_setbeacontimers(sc->sc_ah, &btimers);
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}
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/*
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* IBSS mode: check the ATIM window size and fix it if necessary.
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*
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* the need for this function arises from the problem that due to unlucky timing
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* of beacon timer configuration (which we try to avoid) and due to unlucky
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* timing of local TSF updates (triggered by the reception of a beacon with the
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* same BSSID - something we can't avoid) the beacon timers can be up updated
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* separately, leaving one of them in the past, not beeing updated until the
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* timers wrap around. due to the fact that the beacon interval does not fit
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* into the timer period (16 bit) a whole number of times the size of the ATIM
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* window can get bigger than desired.
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*
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* usually we have an ATIM window size of 1 but this function is written to
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* handle other window sizes as well.
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*/
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int
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ath_hw_check_atim(struct ath_softc *sc, int window, int intval)
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{
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struct ath_hal *ah = sc->sc_ah;
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unsigned int nbtt, atim, is5210 = 0;
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if (ATH_SREV_FROM_AH(ah) >= AR5K_SREV_VER_AR5416)
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return 0; /* AR5416+ doesn't do ATIM in HW */
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if (ATH_SREV_FROM_AH(ah) == AR5K_SREV_VER_AR5210) {
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nbtt = OS_REG_READ(ah, AR5K_TIMER0_5210);
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atim = OS_REG_READ(ah, AR5K_TIMER3_5210);
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is5210 = 1;
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}
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else {
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nbtt = OS_REG_READ(ah, AR5K_TIMER0_5211);
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atim = OS_REG_READ(ah, AR5K_TIMER3_5211);
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}
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/*
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* check if the ATIM window is still correct:
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* 1.) usually ATIM should be NBTT + window
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* 2.) nbtt already updated
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* 3.) nbtt already updated and has wrapped around
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* 4.) atim has wrapped around
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*/
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if ((atim - nbtt != window) && /* 1.) */
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(nbtt - atim != intval - window) && /* 2.) */
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((nbtt | 0x10000) - atim != intval - window) && /* 3.) */
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((atim | 0x10000) - nbtt != window)) { /* 4.) */
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if (is5210)
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OS_REG_WRITE(ah, AR5K_TIMER3_5210, nbtt + window );
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else
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OS_REG_WRITE(ah, AR5K_TIMER3_5211, nbtt + window );
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return atim - nbtt;
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}
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return 0;
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}
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