ath9k: move ath9k_beacon_config_sta to common-beacon (cbbdf2ae) · Commits · jan.koester / Linux

drivers/net/wireless/ath/ath9k/Makefile

+2 −1

Original line number	Diff line number	Diff line
		@@ -52,7 +52,8 @@ obj-$(CONFIG_ATH9K_HW) += ath9k_hw.o

		obj-$(CONFIG_ATH9K_COMMON) += ath9k_common.o
		ath9k_common-y:= common.o \
		common-init.o
		common-init.o \
		common-beacon.o

		ath9k_htc-y += htc_hst.o \
		hif_usb.o \

drivers/net/wireless/ath/ath9k/beacon.c

+3 −77

Original line number	Diff line number	Diff line
		@@ -505,87 +505,13 @@ static void ath9k_beacon_config_ap(struct ath_softc *sc,
		ath9k_beacon_init(sc, nexttbtt, intval, false);
		}

		/*
		* This sets up the beacon timers according to the timestamp of the last
		* received beacon and the current TSF, configures PCF and DTIM
		* handling, programs the sleep registers so the hardware will wakeup in
		* time to receive beacons, and configures the beacon miss handling so
		* we'll receive a BMISS interrupt when we stop seeing beacons from the AP
		* we've associated with.
		*/
		static void ath9k_beacon_config_sta(struct ath_softc *sc,
		static void ath9k_beacon_config_sta(struct ath_hw *ah,
		struct ath_beacon_config *conf)
		{
		struct ath_hw *ah = sc->sc_ah;
		struct ath_common *common = ath9k_hw_common(ah);
		struct ath9k_beacon_state bs;
		int dtim_intval;
		u32 nexttbtt = 0, intval;
		u64 tsf;

		/* No need to configure beacon if we are not associated */
		if (!test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags)) {
		ath_dbg(common, BEACON,
		"STA is not yet associated..skipping beacon config\n");
		if (ath9k_cmn_beacon_config_sta(ah, conf, &bs) == -EPERM)
		return;
		}

		memset(&bs, 0, sizeof(bs));
		intval = conf->beacon_interval;

		/*
		* Setup dtim parameters according to
		* last beacon we received (which may be none).
		*/
		dtim_intval = intval * conf->dtim_period;

		/*
		* Pull nexttbtt forward to reflect the current
		* TSF and calculate dtim state for the result.
		*/
		tsf = ath9k_hw_gettsf64(ah);
		nexttbtt = ath9k_get_next_tbtt(sc, tsf, intval);

		bs.bs_intval = TU_TO_USEC(intval);
		bs.bs_dtimperiod = conf->dtim_period * bs.bs_intval;
		bs.bs_nexttbtt = nexttbtt;
		bs.bs_nextdtim = nexttbtt;
		if (conf->dtim_period > 1)
		bs.bs_nextdtim = ath9k_get_next_tbtt(sc, tsf, dtim_intval);

		/*
		* Calculate the number of consecutive beacons to miss* before taking
		* a BMISS interrupt. The configuration is specified in TU so we only
		* need calculate based on the beacon interval. Note that we clamp the
		* result to at most 15 beacons.
		*/
		bs.bs_bmissthreshold = DIV_ROUND_UP(conf->bmiss_timeout, intval);
		if (bs.bs_bmissthreshold > 15)
		bs.bs_bmissthreshold = 15;
		else if (bs.bs_bmissthreshold <= 0)
		bs.bs_bmissthreshold = 1;

		/*
		* Calculate sleep duration. The configuration is given in ms.
		* We ensure a multiple of the beacon period is used. Also, if the sleep
		* duration is greater than the DTIM period then it makes senses
		* to make it a multiple of that.
		*
		* XXX fixed at 100ms
		*/

		bs.bs_sleepduration = TU_TO_USEC(roundup(IEEE80211_MS_TO_TU(100),
		intval));
		if (bs.bs_sleepduration > bs.bs_dtimperiod)
		bs.bs_sleepduration = bs.bs_dtimperiod;

		/* TSF out of range threshold fixed at 1 second */
		bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;

		ath_dbg(common, BEACON, "bmiss: %u sleep: %u\n",
		bs.bs_bmissthreshold, bs.bs_sleepduration);

		/* Set the computed STA beacon timers */

		ath9k_hw_disable_interrupts(ah);
		ath9k_hw_set_sta_beacon_timers(ah, &bs);
		@@ -777,7 +703,7 @@ void ath9k_set_beacon(struct ath_softc *sc)
		ath9k_beacon_config_adhoc(sc, cur_conf);
		break;
		case NL80211_IFTYPE_STATION:
		ath9k_beacon_config_sta(sc, cur_conf);
		ath9k_beacon_config_sta(sc->sc_ah, cur_conf);
		break;
		default:
		ath_dbg(common, CONFIG, "Unsupported beaconing mode\n");

drivers/net/wireless/ath/ath9k/common-beacon.c

0 → 100644

+126 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (c) 2008-2011 Atheros Communications Inc.
		*
		* Permission to use, copy, modify, and/or distribute this software for any
		* purpose with or without fee is hereby granted, provided that the above
		* copyright notice and this permission notice appear in all copies.
		*
		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
		*/

		#include "common.h"

		#define FUDGE 2

		/* Calculate the modulo of a 64 bit TSF snapshot with a TU divisor */
		static u32 ath9k_mod_tsf64_tu(u64 tsf, u32 div_tu)
		{
		u32 tsf_mod, tsf_hi, tsf_lo, mod_hi, mod_lo;

		tsf_mod = tsf & (BIT(10) - 1);
		tsf_hi = tsf >> 32;
		tsf_lo = ((u32) tsf) >> 10;

		mod_hi = tsf_hi % div_tu;
		mod_lo = ((mod_hi << 22) + tsf_lo) % div_tu;

		return (mod_lo << 10) \| tsf_mod;
		}

		static u32 ath9k_get_next_tbtt(struct ath_hw *ah, u64 tsf,
		unsigned int interval)
		{
		unsigned int offset;

		tsf += TU_TO_USEC(FUDGE + ah->config.sw_beacon_response_time);
		offset = ath9k_mod_tsf64_tu(tsf, interval);

		return (u32) tsf + TU_TO_USEC(interval) - offset;
		}

		/*
		* This sets up the beacon timers according to the timestamp of the last
		* received beacon and the current TSF, configures PCF and DTIM
		* handling, programs the sleep registers so the hardware will wakeup in
		* time to receive beacons, and configures the beacon miss handling so
		* we'll receive a BMISS interrupt when we stop seeing beacons from the AP
		* we've associated with.
		*/
		int ath9k_cmn_beacon_config_sta(struct ath_hw *ah,
		struct ath_beacon_config *conf,
		struct ath9k_beacon_state *bs)
		{
		struct ath_common *common = ath9k_hw_common(ah);
		int dtim_intval;
		u64 tsf;

		/* No need to configure beacon if we are not associated */
		if (!test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags)) {
		ath_dbg(common, BEACON,
		"STA is not yet associated..skipping beacon config\n");
		return -EPERM;
		}

		memset(bs, 0, sizeof(*bs));
		conf->intval = conf->beacon_interval;

		/*
		* Setup dtim parameters according to
		* last beacon we received (which may be none).
		*/
		dtim_intval = conf->intval * conf->dtim_period;

		/*
		* Pull nexttbtt forward to reflect the current
		* TSF and calculate dtim state for the result.
		*/
		tsf = ath9k_hw_gettsf64(ah);
		conf->nexttbtt = ath9k_get_next_tbtt(ah, tsf, conf->intval);

		bs->bs_intval = TU_TO_USEC(conf->intval);
		bs->bs_dtimperiod = conf->dtim_period * bs->bs_intval;
		bs->bs_nexttbtt = conf->nexttbtt;
		bs->bs_nextdtim = conf->nexttbtt;
		if (conf->dtim_period > 1)
		bs->bs_nextdtim = ath9k_get_next_tbtt(ah, tsf, dtim_intval);

		/*
		* Calculate the number of consecutive beacons to miss* before taking
		* a BMISS interrupt. The configuration is specified in TU so we only
		* need calculate based on the beacon interval. Note that we clamp the
		* result to at most 15 beacons.
		*/
		bs->bs_bmissthreshold = DIV_ROUND_UP(conf->bmiss_timeout, conf->intval);
		if (bs->bs_bmissthreshold > 15)
		bs->bs_bmissthreshold = 15;
		else if (bs->bs_bmissthreshold <= 0)
		bs->bs_bmissthreshold = 1;

		/*
		* Calculate sleep duration. The configuration is given in ms.
		* We ensure a multiple of the beacon period is used. Also, if the sleep
		* duration is greater than the DTIM period then it makes senses
		* to make it a multiple of that.
		*
		* XXX fixed at 100ms
		*/

		bs->bs_sleepduration = TU_TO_USEC(roundup(IEEE80211_MS_TO_TU(100),
		conf->intval));
		if (bs->bs_sleepduration > bs->bs_dtimperiod)
		bs->bs_sleepduration = bs->bs_dtimperiod;

		/* TSF out of range threshold fixed at 1 second */
		bs->bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;

		ath_dbg(common, BEACON, "bmiss: %u sleep: %u\n",
		bs->bs_bmissthreshold, bs->bs_sleepduration);
		return 0;
		}
		EXPORT_SYMBOL(ath9k_cmn_beacon_config_sta);

drivers/net/wireless/ath/ath9k/common-beacon.h

0 → 100644

+21 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (c) 2009-2011 Atheros Communications Inc.
		*
		* Permission to use, copy, modify, and/or distribute this software for any
		* purpose with or without fee is hereby granted, provided that the above
		* copyright notice and this permission notice appear in all copies.
		*
		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
		*/

		struct ath_beacon_config;

		int ath9k_cmn_beacon_config_sta(struct ath_hw *ah,
		struct ath_beacon_config *conf,
		struct ath9k_beacon_state *bs);

drivers/net/wireless/ath/ath9k/common.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@
		#include "hw-ops.h"

		#include "common-init.h"
		#include "common-beacon.h"

		/* Common header for Atheros 802.11n base driver cores */