37931a3544
rather than global variables. This specifically allows for debugging to be enabled per-NIC, rather than globally. Since the ath driver doesn't know about AH_DEBUG, and to keep the ABI consistent regardless of whether AH_DEBUG is enabled or not, enable the debug parameter always but only conditionally compile in the debug methods if needed. The ALQ support is currently still global pending some brainstorming. Submitted by: ssgriffonuser@gmail.com Reviewed by: adrian, bschmidt
247 lines
8.0 KiB
C
247 lines
8.0 KiB
C
/*
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* Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
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* Copyright (c) 2002-2008 Atheros Communications, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* $FreeBSD$
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*/
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#include "opt_ah.h"
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#include "ah.h"
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#include "ah_internal.h"
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#include "ar5416/ar5416.h"
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#include "ar5416/ar5416reg.h"
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#include "ar5416/ar5416phy.h"
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#define TU_TO_USEC(_tu) ((_tu) << 10)
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/*
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* Initialize all of the hardware registers used to
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* send beacons. Note that for station operation the
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* driver calls ar5416SetStaBeaconTimers instead.
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*/
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void
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ar5416SetBeaconTimers(struct ath_hal *ah, const HAL_BEACON_TIMERS *bt)
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{
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uint32_t bperiod;
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OS_REG_WRITE(ah, AR_NEXT_TBTT, TU_TO_USEC(bt->bt_nexttbtt));
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OS_REG_WRITE(ah, AR_NEXT_DBA, TU_TO_USEC(bt->bt_nextdba) >> 3);
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OS_REG_WRITE(ah, AR_NEXT_SWBA, TU_TO_USEC(bt->bt_nextswba) >> 3);
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OS_REG_WRITE(ah, AR_NEXT_NDP, TU_TO_USEC(bt->bt_nextatim));
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bperiod = TU_TO_USEC(bt->bt_intval & HAL_BEACON_PERIOD);
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OS_REG_WRITE(ah, AR5416_BEACON_PERIOD, bperiod);
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OS_REG_WRITE(ah, AR_DBA_PERIOD, bperiod);
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OS_REG_WRITE(ah, AR_SWBA_PERIOD, bperiod);
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OS_REG_WRITE(ah, AR_NDP_PERIOD, bperiod);
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/*
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* Reset TSF if required.
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*/
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if (bt->bt_intval & AR_BEACON_RESET_TSF)
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ar5416ResetTsf(ah);
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/* enable timers */
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/* NB: flags == 0 handled specially for backwards compatibility */
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OS_REG_SET_BIT(ah, AR_TIMER_MODE,
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bt->bt_flags != 0 ? bt->bt_flags :
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AR_TIMER_MODE_TBTT | AR_TIMER_MODE_DBA | AR_TIMER_MODE_SWBA);
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}
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/*
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* Initializes all of the hardware registers used to
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* send beacons. Note that for station operation the
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* driver calls ar5212SetStaBeaconTimers instead.
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*/
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void
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ar5416BeaconInit(struct ath_hal *ah,
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uint32_t next_beacon, uint32_t beacon_period)
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{
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HAL_BEACON_TIMERS bt;
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bt.bt_nexttbtt = next_beacon;
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/*
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* TIMER1: in AP/adhoc mode this controls the DMA beacon
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* alert timer; otherwise it controls the next wakeup time.
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* TIMER2: in AP mode, it controls the SBA beacon alert
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* interrupt; otherwise it sets the start of the next CFP.
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*/
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bt.bt_flags = 0;
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switch (AH_PRIVATE(ah)->ah_opmode) {
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case HAL_M_STA:
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case HAL_M_MONITOR:
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bt.bt_nextdba = 0xffff;
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bt.bt_nextswba = 0x7ffff;
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bt.bt_flags |= AR_TIMER_MODE_TBTT;
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break;
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case HAL_M_IBSS:
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OS_REG_SET_BIT(ah, AR_TXCFG, AR_TXCFG_ATIM_TXPOLICY);
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bt.bt_flags |= AR_TIMER_MODE_NDP;
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/* fall thru... */
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case HAL_M_HOSTAP:
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bt.bt_nextdba = (next_beacon -
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ah->ah_config.ah_dma_beacon_response_time) << 3; /* 1/8 TU */
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bt.bt_nextswba = (next_beacon -
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ah->ah_config.ah_sw_beacon_response_time) << 3; /* 1/8 TU */
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bt.bt_flags |= AR_TIMER_MODE_TBTT
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| AR_TIMER_MODE_DBA
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| AR_TIMER_MODE_SWBA;
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break;
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}
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/*
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* Set the ATIM window
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* Our hardware does not support an ATIM window of 0
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* (beacons will not work). If the ATIM windows is 0,
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* force it to 1.
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*/
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bt.bt_nextatim = next_beacon + 1;
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bt.bt_intval = beacon_period &
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(AR_BEACON_PERIOD | AR_BEACON_RESET_TSF | AR_BEACON_EN);
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ar5416SetBeaconTimers(ah, &bt);
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}
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#define AR_BEACON_PERIOD_MAX 0xffff
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void
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ar5416ResetStaBeaconTimers(struct ath_hal *ah)
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{
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uint32_t val;
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OS_REG_WRITE(ah, AR_NEXT_TBTT, 0); /* no beacons */
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val = OS_REG_READ(ah, AR_STA_ID1);
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val |= AR_STA_ID1_PWR_SAV; /* XXX */
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/* tell the h/w that the associated AP is not PCF capable */
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OS_REG_WRITE(ah, AR_STA_ID1,
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val & ~(AR_STA_ID1_USE_DEFANT | AR_STA_ID1_PCF));
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OS_REG_WRITE(ah, AR5416_BEACON_PERIOD, AR_BEACON_PERIOD_MAX);
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OS_REG_WRITE(ah, AR_DBA_PERIOD, AR_BEACON_PERIOD_MAX);
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}
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/*
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* Set all the beacon related bits on the h/w for stations
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* i.e. initializes the corresponding h/w timers;
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* also tells the h/w whether to anticipate PCF beacons
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*/
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void
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ar5416SetStaBeaconTimers(struct ath_hal *ah, const HAL_BEACON_STATE *bs)
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{
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uint32_t nextTbtt, nextdtim,beaconintval, dtimperiod;
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HALASSERT(bs->bs_intval != 0);
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/* NB: no cfp setting since h/w automatically takes care */
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OS_REG_WRITE(ah, AR_NEXT_TBTT, bs->bs_nexttbtt);
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/*
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* Start the beacon timers by setting the BEACON register
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* to the beacon interval; no need to write tim offset since
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* h/w parses IEs.
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*/
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OS_REG_WRITE(ah, AR5416_BEACON_PERIOD,
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TU_TO_USEC(bs->bs_intval & HAL_BEACON_PERIOD));
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OS_REG_WRITE(ah, AR_DBA_PERIOD,
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TU_TO_USEC(bs->bs_intval & HAL_BEACON_PERIOD));
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/*
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* Configure the BMISS interrupt. Note that we
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* assume the caller blocks interrupts while enabling
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* the threshold.
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*/
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HALASSERT(bs->bs_bmissthreshold <=
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(AR_RSSI_THR_BM_THR >> AR_RSSI_THR_BM_THR_S));
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OS_REG_RMW_FIELD(ah, AR_RSSI_THR,
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AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
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/*
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* Program the sleep registers to correlate with the beacon setup.
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*/
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/*
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* Oahu beacons timers on the station were used for power
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* save operation (waking up in anticipation of a beacon)
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* and any CFP function; Venice does sleep/power-save timers
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* differently - so this is the right place to set them up;
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* don't think the beacon timers are used by venice sta hw
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* for any useful purpose anymore
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* Setup venice's sleep related timers
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* Current implementation assumes sw processing of beacons -
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* assuming an interrupt is generated every beacon which
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* causes the hardware to become awake until the sw tells
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* it to go to sleep again; beacon timeout is to allow for
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* beacon jitter; cab timeout is max time to wait for cab
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* after seeing the last DTIM or MORE CAB bit
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*/
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#define CAB_TIMEOUT_VAL 10 /* in TU */
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#define BEACON_TIMEOUT_VAL 10 /* in TU */
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#define SLEEP_SLOP 3 /* in TU */
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/*
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* For max powersave mode we may want to sleep for longer than a
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* beacon period and not want to receive all beacons; modify the
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* timers accordingly; make sure to align the next TIM to the
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* next DTIM if we decide to wake for DTIMs only
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*/
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beaconintval = bs->bs_intval & HAL_BEACON_PERIOD;
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HALASSERT(beaconintval != 0);
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if (bs->bs_sleepduration > beaconintval) {
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HALASSERT(roundup(bs->bs_sleepduration, beaconintval) ==
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bs->bs_sleepduration);
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beaconintval = bs->bs_sleepduration;
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}
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dtimperiod = bs->bs_dtimperiod;
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if (bs->bs_sleepduration > dtimperiod) {
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HALASSERT(dtimperiod == 0 ||
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roundup(bs->bs_sleepduration, dtimperiod) ==
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bs->bs_sleepduration);
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dtimperiod = bs->bs_sleepduration;
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}
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HALASSERT(beaconintval <= dtimperiod);
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if (beaconintval == dtimperiod)
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nextTbtt = bs->bs_nextdtim;
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else
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nextTbtt = bs->bs_nexttbtt;
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nextdtim = bs->bs_nextdtim;
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OS_REG_WRITE(ah, AR_NEXT_DTIM,
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TU_TO_USEC(bs->bs_nextdtim - SLEEP_SLOP));
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OS_REG_WRITE(ah, AR_NEXT_TIM, TU_TO_USEC(nextTbtt - SLEEP_SLOP));
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/* cab timeout is now in 1/8 TU */
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OS_REG_WRITE(ah, AR_SLEEP1,
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SM((CAB_TIMEOUT_VAL << 3), AR5416_SLEEP1_CAB_TIMEOUT)
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| AR_SLEEP1_ASSUME_DTIM);
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/* beacon timeout is now in 1/8 TU */
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OS_REG_WRITE(ah, AR_SLEEP2,
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SM((BEACON_TIMEOUT_VAL << 3), AR5416_SLEEP2_BEACON_TIMEOUT));
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OS_REG_WRITE(ah, AR_TIM_PERIOD, beaconintval);
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OS_REG_WRITE(ah, AR_DTIM_PERIOD, dtimperiod);
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OS_REG_SET_BIT(ah, AR_TIMER_MODE,
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AR_TIMER_MODE_TBTT | AR_TIMER_MODE_TIM | AR_TIMER_MODE_DTIM);
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HALDEBUG(ah, HAL_DEBUG_BEACON, "%s: next DTIM %d\n",
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__func__, bs->bs_nextdtim);
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HALDEBUG(ah, HAL_DEBUG_BEACON, "%s: next beacon %d\n",
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__func__, nextTbtt);
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HALDEBUG(ah, HAL_DEBUG_BEACON, "%s: beacon period %d\n",
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__func__, beaconintval);
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HALDEBUG(ah, HAL_DEBUG_BEACON, "%s: DTIM period %d\n",
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__func__, dtimperiod);
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#undef CAB_TIMEOUT_VAL
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#undef BEACON_TIMEOUT_VAL
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#undef SLEEP_SLOP
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}
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