Merge commit 'origin/master' into next

Manual merge of:
	arch/powerpc/include/asm/elf.h
	drivers/i2c/busses/i2c-mpc.c

1 files changed, 353 insertions, 461 deletions

diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c
index 3ab0b43aaf93..ec995730632d 100644
--- a/drivers/net/wireless/ath9k/beacon.c
+++ b/drivers/net/wireless/ath9k/beacon.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008 Atheros Communications Inc.
+ * Copyright (c) 2008-2009 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
@@ -14,7 +14,9 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include "core.h"
+#include "ath9k.h"
+
+#define FUDGE 2
 
 /*
  *  This function will modify certain transmit queue properties depending on
@@ -23,11 +25,11 @@
 */
 static int ath_beaconq_config(struct ath_softc *sc)
 {
-	struct ath_hal *ah = sc->sc_ah;
+	struct ath_hw *ah = sc->sc_ah;
 	struct ath9k_tx_queue_info qi;
 
 	ath9k_hw_get_txq_props(ah, sc->beacon.beaconq, &qi);
-	if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP) {
+	if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
 		/* Always burst out beacon and CAB traffic. */
 		qi.tqi_aifs = 1;
 		qi.tqi_cwmin = 0;
@@ -44,46 +46,33 @@ static int ath_beaconq_config(struct ath_softc *sc)
 			"unable to update h/w beacon queue parameters\n");
 		return 0;
 	} else {
-		ath9k_hw_resettxqueue(ah, sc->beacon.beaconq); /* push to h/w */
+		ath9k_hw_resettxqueue(ah, sc->beacon.beaconq);
 		return 1;
 	}
 }
 
-static void ath_bstuck_process(struct ath_softc *sc)
-{
-	DPRINTF(sc, ATH_DBG_BEACON,
-		"stuck beacon; resetting (bmiss count %u)\n",
-		sc->beacon.bmisscnt);
-	ath_reset(sc, false);
-}
-
 /*
  *  Associates the beacon frame buffer with a transmit descriptor.  Will set
  *  up all required antenna switch parameters, rate codes, and channel flags.
  *  Beacons are always sent out at the lowest rate, and are not retried.
 */
-static void ath_beacon_setup(struct ath_softc *sc,
-			     struct ath_vap *avp, struct ath_buf *bf)
+static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
+			     struct ath_buf *bf)
 {
 	struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
-	struct ath_hal *ah = sc->sc_ah;
+	struct ath_hw *ah = sc->sc_ah;
 	struct ath_desc *ds;
 	struct ath9k_11n_rate_series series[4];
 	struct ath_rate_table *rt;
-	int flags, antenna;
-	u8 rix, rate;
-	int ctsrate = 0;
-	int ctsduration = 0;
-
-	DPRINTF(sc, ATH_DBG_BEACON, "m %p len %u\n", skb, skb->len);
+	int flags, antenna, ctsrate = 0, ctsduration = 0;
+	u8 rate;
 
-	/* setup descriptors */
 	ds = bf->bf_desc;
-
 	flags = ATH9K_TXDESC_NOACK;
 
-	if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC &&
-	    (ah->ah_caps.hw_caps & ATH9K_HW_CAP_VEOL)) {
+	if (((sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
+	     (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) &&
+	    (ah->caps.hw_caps & ATH9K_HW_CAP_VEOL)) {
 		ds->ds_link = bf->bf_daddr; /* self-linked */
 		flags |= ATH9K_TXDESC_VEOL;
 		/* Let hardware handle antenna switching. */
@@ -92,65 +81,53 @@ static void ath_beacon_setup(struct ath_softc *sc,
 		ds->ds_link = 0;
 		/*
 		 * Switch antenna every beacon.
-		 * Should only switch every beacon period, not for every
-		 * SWBA's
-		 * XXX assumes two antenna
+		 * Should only switch every beacon period, not for every SWBA
+		 * XXX assumes two antennae
 		 */
-		antenna = ((sc->beacon.ast_be_xmit / sc->sc_nbcnvaps) & 1 ? 2 : 1);
+		antenna = ((sc->beacon.ast_be_xmit / sc->nbcnvifs) & 1 ? 2 : 1);
 	}
 
 	ds->ds_data = bf->bf_buf_addr;
 
-	/*
-	 * Calculate rate code.
-	 * XXX everything at min xmit rate
-	 */
-	rix = 0;
 	rt = sc->cur_rate_table;
-	rate = rt->info[rix].ratecode;
+	rate = rt->info[0].ratecode;
 	if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
-		rate |= rt->info[rix].short_preamble;
-
-	ath9k_hw_set11n_txdesc(ah, ds,
-			       skb->len + FCS_LEN,     /* frame length */
-			       ATH9K_PKT_TYPE_BEACON,  /* Atheros packet type */
-			       MAX_RATE_POWER,         /* FIXME */
-			       ATH9K_TXKEYIX_INVALID,  /* no encryption */
-			       ATH9K_KEY_TYPE_CLEAR,   /* no encryption */
-			       flags                   /* no ack,
-							  veol for beacons */
-		);
+		rate |= rt->info[0].short_preamble;
+
+	ath9k_hw_set11n_txdesc(ah, ds, skb->len + FCS_LEN,
+			       ATH9K_PKT_TYPE_BEACON,
+			       MAX_RATE_POWER,
+			       ATH9K_TXKEYIX_INVALID,
+			       ATH9K_KEY_TYPE_CLEAR,
+			       flags);
 
 	/* NB: beacon's BufLen must be a multiple of 4 bytes */
-	ath9k_hw_filltxdesc(ah, ds,
-			    roundup(skb->len, 4), /* buffer length */
-			    true,                 /* first segment */
-			    true,                 /* last segment */
-			    ds                    /* first descriptor */
-		);
+	ath9k_hw_filltxdesc(ah, ds, roundup(skb->len, 4),
+			    true, true, ds);
 
 	memset(series, 0, sizeof(struct ath9k_11n_rate_series) * 4);
 	series[0].Tries = 1;
 	series[0].Rate = rate;
-	series[0].ChSel = sc->sc_tx_chainmask;
+	series[0].ChSel = sc->tx_chainmask;
 	series[0].RateFlags = (ctsrate) ? ATH9K_RATESERIES_RTS_CTS : 0;
-	ath9k_hw_set11n_ratescenario(ah, ds, ds, 0,
-		ctsrate, ctsduration, series, 4, 0);
+	ath9k_hw_set11n_ratescenario(ah, ds, ds, 0, ctsrate, ctsduration,
+				     series, 4, 0);
 }
 
-/* Generate beacon frame and queue cab data for a vap */
-static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
+static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
+					   struct ieee80211_vif *vif)
 {
+	struct ath_wiphy *aphy = hw->priv;
+	struct ath_softc *sc = aphy->sc;
 	struct ath_buf *bf;
-	struct ath_vap *avp;
+	struct ath_vif *avp;
 	struct sk_buff *skb;
 	struct ath_txq *cabq;
-	struct ieee80211_vif *vif;
 	struct ieee80211_tx_info *info;
 	int cabq_depth;
 
-	vif = sc->sc_vaps[if_id];
-	ASSERT(vif);
+	if (aphy->state != ATH_WIPHY_ACTIVE)
+		return NULL;
 
 	avp = (void *)vif->drv_priv;
 	cabq = sc->beacon.cabq;
@@ -161,19 +138,24 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
 		return NULL;
 	}
 
+	/* Release the old beacon first */
+
 	bf = avp->av_bcbuf;
 	skb = (struct sk_buff *)bf->bf_mpdu;
 	if (skb) {
-		pci_unmap_single(sc->pdev, bf->bf_dmacontext,
-				 skb->len,
-				 PCI_DMA_TODEVICE);
+		dma_unmap_single(sc->dev, bf->bf_dmacontext,
+				 skb->len, DMA_TO_DEVICE);
 		dev_kfree_skb_any(skb);
 	}
 
-	skb = ieee80211_beacon_get(sc->hw, vif);
+	/* Get a new beacon from mac80211 */
+
+	skb = ieee80211_beacon_get(hw, vif);
 	bf->bf_mpdu = skb;
 	if (skb == NULL)
 		return NULL;
+	((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp =
+		avp->tsf_adjust;
 
 	info = IEEE80211_SKB_CB(skb);
 	if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
@@ -188,54 +170,42 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
 	}
 
 	bf->bf_buf_addr = bf->bf_dmacontext =
-		pci_map_single(sc->pdev, skb->data,
-			       skb->len,
-			       PCI_DMA_TODEVICE);
-	if (unlikely(pci_dma_mapping_error(sc->pdev, bf->bf_buf_addr))) {
+		dma_map_single(sc->dev, skb->data,
+			       skb->len, DMA_TO_DEVICE);
+	if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
 		dev_kfree_skb_any(skb);
 		bf->bf_mpdu = NULL;
-		DPRINTF(sc, ATH_DBG_CONFIG,
-			"pci_dma_mapping_error() on beaconing\n");
+		DPRINTF(sc, ATH_DBG_FATAL, "dma_mapping_error on beaconing\n");
 		return NULL;
 	}
 
-	skb = ieee80211_get_buffered_bc(sc->hw, vif);
+	skb = ieee80211_get_buffered_bc(hw, vif);
 
 	/*
 	 * if the CABQ traffic from previous DTIM is pending and the current
 	 *  beacon is also a DTIM.
-	 *  1) if there is only one vap let the cab traffic continue.
-	 *  2) if there are more than one vap and we are using staggered
+	 *  1) if there is only one vif let the cab traffic continue.
+	 *  2) if there are more than one vif and we are using staggered
 	 *     beacons, then drain the cabq by dropping all the frames in
-	 *     the cabq so that the current vaps cab traffic can be scheduled.
+	 *     the cabq so that the current vifs cab traffic can be scheduled.
 	 */
 	spin_lock_bh(&cabq->axq_lock);
 	cabq_depth = cabq->axq_depth;
 	spin_unlock_bh(&cabq->axq_lock);
 
 	if (skb && cabq_depth) {
-		/*
-		 * Unlock the cabq lock as ath_tx_draintxq acquires
-		 * the lock again which is a common function and that
-		 * acquires txq lock inside.
-		 */
-		if (sc->sc_nvaps > 1) {
-			ath_tx_draintxq(sc, cabq, false);
+		if (sc->nvifs > 1) {
 			DPRINTF(sc, ATH_DBG_BEACON,
-				"flush previous cabq traffic\n");
+				"Flushing previous cabq traffic\n");
+			ath_draintxq(sc, cabq, false);
 		}
 	}
 
-	/* Construct tx descriptor. */
 	ath_beacon_setup(sc, avp, bf);
 
-	/*
-	 * Enable the CAB queue before the beacon queue to
-	 * insure cab frames are triggered by this beacon.
-	 */
 	while (skb) {
-		ath_tx_cabq(sc, skb);
-		skb = ieee80211_get_buffered_bc(sc->hw, vif);
+		ath_tx_cabq(hw, skb);
+		skb = ieee80211_get_buffered_bc(hw, vif);
 	}
 
 	return bf;
@@ -245,28 +215,22 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
  * Startup beacon transmission for adhoc mode when they are sent entirely
  * by the hardware using the self-linked descriptor + veol trick.
 */
-static void ath_beacon_start_adhoc(struct ath_softc *sc, int if_id)
+static void ath_beacon_start_adhoc(struct ath_softc *sc,
+				   struct ieee80211_vif *vif)
 {
-	struct ieee80211_vif *vif;
-	struct ath_hal *ah = sc->sc_ah;
+	struct ath_hw *ah = sc->sc_ah;
 	struct ath_buf *bf;
-	struct ath_vap *avp;
+	struct ath_vif *avp;
 	struct sk_buff *skb;
 
-	vif = sc->sc_vaps[if_id];
-	ASSERT(vif);
-
 	avp = (void *)vif->drv_priv;
 
-	if (avp->av_bcbuf == NULL) {
-		DPRINTF(sc, ATH_DBG_BEACON, "avp=%p av_bcbuf=%p\n",
-			avp, avp != NULL ? avp->av_bcbuf : NULL);
+	if (avp->av_bcbuf == NULL)
 		return;
-	}
+
 	bf = avp->av_bcbuf;
 	skb = (struct sk_buff *) bf->bf_mpdu;
 
-	/* Construct tx descriptor. */
 	ath_beacon_setup(sc, avp, bf);
 
 	/* NB: caller is known to have already stopped tx dma */
@@ -276,7 +240,7 @@ static void ath_beacon_start_adhoc(struct ath_softc *sc, int if_id)
 		sc->beacon.beaconq, ito64(bf->bf_daddr), bf->bf_desc);
 }
 
-int ath_beaconq_setup(struct ath_hal *ah)
+int ath_beaconq_setup(struct ath_hw *ah)
 {
 	struct ath9k_tx_queue_info qi;
 
@@ -288,18 +252,14 @@ int ath_beaconq_setup(struct ath_hal *ah)
 	return ath9k_hw_setuptxqueue(ah, ATH9K_TX_QUEUE_BEACON, &qi);
 }
 
-int ath_beacon_alloc(struct ath_softc *sc, int if_id)
+int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
 {
-	struct ieee80211_vif *vif;
-	struct ath_vap *avp;
-	struct ieee80211_hdr *hdr;
+	struct ath_softc *sc = aphy->sc;
+	struct ath_vif *avp;
 	struct ath_buf *bf;
 	struct sk_buff *skb;
 	__le64 tstamp;
 
-	vif = sc->sc_vaps[if_id];
-	ASSERT(vif);
-
 	avp = (void *)vif->drv_priv;
 
 	/* Allocate a beacon descriptor if we haven't done so. */
@@ -310,51 +270,46 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id)
 						 struct ath_buf, list);
 		list_del(&avp->av_bcbuf->list);
 
-		if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP ||
-		    !(sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_VEOL)) {
+		if (sc->sc_ah->opmode == NL80211_IFTYPE_AP ||
+		    !(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_VEOL)) {
 			int slot;
 			/*
-			 * Assign the vap to a beacon xmit slot. As
+			 * Assign the vif to a beacon xmit slot. As
 			 * above, this cannot fail to find one.
 			 */
 			avp->av_bslot = 0;
 			for (slot = 0; slot < ATH_BCBUF; slot++)
-				if (sc->beacon.bslot[slot] == ATH_IF_ID_ANY) {
+				if (sc->beacon.bslot[slot] == NULL) {
 					/*
 					 * XXX hack, space out slots to better
 					 * deal with misses
 					 */
 					if (slot+1 < ATH_BCBUF &&
-					    sc->beacon.bslot[slot+1] ==
-						ATH_IF_ID_ANY) {
+					    sc->beacon.bslot[slot+1] == NULL) {
 						avp->av_bslot = slot+1;
 						break;
 					}
 					avp->av_bslot = slot;
 					/* NB: keep looking for a double slot */
 				}
-			BUG_ON(sc->beacon.bslot[avp->av_bslot] != ATH_IF_ID_ANY);
-			sc->beacon.bslot[avp->av_bslot] = if_id;
-			sc->sc_nbcnvaps++;
+			BUG_ON(sc->beacon.bslot[avp->av_bslot] != NULL);
+			sc->beacon.bslot[avp->av_bslot] = vif;
+			sc->beacon.bslot_aphy[avp->av_bslot] = aphy;
+			sc->nbcnvifs++;
 		}
 	}
 
-	/* release the previous beacon frame , if it already exists. */
+	/* release the previous beacon frame, if it already exists. */
 	bf = avp->av_bcbuf;
 	if (bf->bf_mpdu != NULL) {
 		skb = (struct sk_buff *)bf->bf_mpdu;
-		pci_unmap_single(sc->pdev, bf->bf_dmacontext,
-				 skb->len,
-				 PCI_DMA_TODEVICE);
+		dma_unmap_single(sc->dev, bf->bf_dmacontext,
+				 skb->len, DMA_TO_DEVICE);
 		dev_kfree_skb_any(skb);
 		bf->bf_mpdu = NULL;
 	}
 
-	/*
-	 * NB: the beacon data buffer must be 32-bit aligned.
-	 * FIXME: Fill avp->av_btxctl.txpower and
-	 * avp->av_btxctl.shortPreamble
-	 */
+	/* NB: the beacon data buffer must be 32-bit aligned. */
 	skb = ieee80211_beacon_get(sc->hw, vif);
 	if (skb == NULL) {
 		DPRINTF(sc, ATH_DBG_BEACON, "cannot get skb\n");
@@ -363,75 +318,65 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id)
 
 	tstamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
 	sc->beacon.bc_tstamp = le64_to_cpu(tstamp);
-
-	/*
-	 * Calculate a TSF adjustment factor required for
-	 * staggered beacons.  Note that we assume the format
-	 * of the beacon frame leaves the tstamp field immediately
-	 * following the header.
-	 */
+	/* Calculate a TSF adjustment factor required for staggered beacons. */
 	if (avp->av_bslot > 0) {
 		u64 tsfadjust;
-		__le64 val;
 		int intval;
 
 		intval = sc->hw->conf.beacon_int ?
 			sc->hw->conf.beacon_int : ATH_DEFAULT_BINTVAL;
 
 		/*
-		 * The beacon interval is in TU's; the TSF in usecs.
-		 * We figure out how many TU's to add to align the
-		 * timestamp then convert to TSF units and handle
-		 * byte swapping before writing it in the frame.
-		 * The hardware will then add this each time a beacon
-		 * frame is sent.  Note that we align vap's 1..N
-		 * and leave vap 0 untouched.  This means vap 0
-		 * has a timestamp in one beacon interval while the
-		 * others get a timestamp aligned to the next interval.
+		 * Calculate the TSF offset for this beacon slot, i.e., the
+		 * number of usecs that need to be added to the timestamp field
+		 * in Beacon and Probe Response frames. Beacon slot 0 is
+		 * processed at the correct offset, so it does not require TSF
+		 * adjustment. Other slots are adjusted to get the timestamp
+		 * close to the TBTT for the BSS.
 		 */
-		tsfadjust = (intval * (ATH_BCBUF - avp->av_bslot)) / ATH_BCBUF;
-		val = cpu_to_le64(tsfadjust << 10);     /* TU->TSF */
+		tsfadjust = intval * avp->av_bslot / ATH_BCBUF;
+		avp->tsf_adjust = cpu_to_le64(TU_TO_USEC(tsfadjust));
 
 		DPRINTF(sc, ATH_DBG_BEACON,
 			"stagger beacons, bslot %d intval %u tsfadjust %llu\n",
 			avp->av_bslot, intval, (unsigned long long)tsfadjust);
 
-		hdr = (struct ieee80211_hdr *)skb->data;
-		memcpy(&hdr[1], &val, sizeof(val));
-	}
+		((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp =
+			avp->tsf_adjust;
+	} else
+		avp->tsf_adjust = cpu_to_le64(0);
 
 	bf->bf_mpdu = skb;
 	bf->bf_buf_addr = bf->bf_dmacontext =
-		pci_map_single(sc->pdev, skb->data,
-			       skb->len,
-			       PCI_DMA_TODEVICE);
-	if (unlikely(pci_dma_mapping_error(sc->pdev, bf->bf_buf_addr))) {
+		dma_map_single(sc->dev, skb->data,
+			       skb->len, DMA_TO_DEVICE);
+	if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
 		dev_kfree_skb_any(skb);
 		bf->bf_mpdu = NULL;
-		DPRINTF(sc, ATH_DBG_CONFIG,
-			"pci_dma_mapping_error() on beacon alloc\n");
+		DPRINTF(sc, ATH_DBG_FATAL,
+			"dma_mapping_error on beacon alloc\n");
 		return -ENOMEM;
 	}
 
 	return 0;
 }
 
-void ath_beacon_return(struct ath_softc *sc, struct ath_vap *avp)
+void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp)
 {
 	if (avp->av_bcbuf != NULL) {
 		struct ath_buf *bf;
 
 		if (avp->av_bslot != -1) {
-			sc->beacon.bslot[avp->av_bslot] = ATH_IF_ID_ANY;
-			sc->sc_nbcnvaps--;
+			sc->beacon.bslot[avp->av_bslot] = NULL;
+			sc->beacon.bslot_aphy[avp->av_bslot] = NULL;
+			sc->nbcnvifs--;
 		}
 
 		bf = avp->av_bcbuf;
 		if (bf->bf_mpdu != NULL) {
 			struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
-			pci_unmap_single(sc->pdev, bf->bf_dmacontext,
-					 skb->len,
-					 PCI_DMA_TODEVICE);
+			dma_unmap_single(sc->dev, bf->bf_dmacontext,
+					 skb->len, DMA_TO_DEVICE);
 			dev_kfree_skb_any(skb);
 			bf->bf_mpdu = NULL;
 		}
@@ -441,92 +386,45 @@ void ath_beacon_return(struct ath_softc *sc, struct ath_vap *avp)
 	}
 }
 
-void ath9k_beacon_tasklet(unsigned long data)
+void ath_beacon_tasklet(unsigned long data)
 {
 	struct ath_softc *sc = (struct ath_softc *)data;
-	struct ath_hal *ah = sc->sc_ah;
+	struct ath_hw *ah = sc->sc_ah;
 	struct ath_buf *bf = NULL;
-	int slot, if_id;
-	u32 bfaddr;
-	u32 rx_clear = 0, rx_frame = 0, tx_frame = 0;
-	u32 show_cycles = 0;
-	u32 bc = 0; /* beacon count */
+	struct ieee80211_vif *vif;
+	struct ath_wiphy *aphy;
+	int slot;
+	u32 bfaddr, bc = 0, tsftu;
 	u64 tsf;
-	u32 tsftu;
 	u16 intval;
 
-	if (sc->sc_flags & SC_OP_NO_RESET) {
-		show_cycles = ath9k_hw_GetMibCycleCountsPct(ah,
-					    &rx_clear, &rx_frame, &tx_frame);
-	}
-
 	/*
 	 * Check if the previous beacon has gone out.  If
 	 * not don't try to post another, skip this period
 	 * and wait for the next.  Missed beacons indicate
 	 * a problem and should not occur.  If we miss too
 	 * many consecutive beacons reset the device.
-	 *
-	 * FIXME: Clean up this mess !!
 	 */
 	if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
 		sc->beacon.bmisscnt++;
-		/* XXX: doth needs the chanchange IE countdown decremented.
-		 *      We should consider adding a mac80211 call to indicate
-		 *      a beacon miss so appropriate action could be taken
-		 *      (in that layer).
-		 */
+
 		if (sc->beacon.bmisscnt < BSTUCK_THRESH) {
-			if (sc->sc_flags & SC_OP_NO_RESET) {
-				DPRINTF(sc, ATH_DBG_BEACON,
-					"missed %u consecutive beacons\n",
-					sc->beacon.bmisscnt);
-				if (show_cycles) {
-					/*
-					 * Display cycle counter stats from HW
-					 * to aide in debug of stickiness.
-					 */
-					DPRINTF(sc, ATH_DBG_BEACON,
-						"busy times: rx_clear=%d, "
-						"rx_frame=%d, tx_frame=%d\n",
-						rx_clear, rx_frame,
-						tx_frame);
-				} else {
-					DPRINTF(sc, ATH_DBG_BEACON,
-						"unable to obtain "
-						"busy times\n");
-				}
-			} else {
-				DPRINTF(sc, ATH_DBG_BEACON,
-					"missed %u consecutive beacons\n",
-					sc->beacon.bmisscnt);
-			}
+			DPRINTF(sc, ATH_DBG_BEACON,
+				"missed %u consecutive beacons\n",
+				sc->beacon.bmisscnt);
 		} else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
-			if (sc->sc_flags & SC_OP_NO_RESET) {
-				if (sc->beacon.bmisscnt == BSTUCK_THRESH) {
-					DPRINTF(sc, ATH_DBG_BEACON,
-						"beacon is officially "
-						"stuck\n");
-				}
-			} else {
-				DPRINTF(sc, ATH_DBG_BEACON,
-					"beacon is officially stuck\n");
-				ath_bstuck_process(sc);
-			}
+			DPRINTF(sc, ATH_DBG_BEACON,
+				"beacon is officially stuck\n");
+			ath_reset(sc, false);
 		}
+
 		return;
 	}
 
 	if (sc->beacon.bmisscnt != 0) {
-		if (sc->sc_flags & SC_OP_NO_RESET) {
-			DPRINTF(sc, ATH_DBG_BEACON,
-				"resume beacon xmit after %u misses\n",
-				sc->beacon.bmisscnt);
-		} else {
-			DPRINTF(sc, ATH_DBG_BEACON,
-				"resume beacon xmit after %u misses\n",
-				sc->beacon.bmisscnt);
-		}
+		DPRINTF(sc, ATH_DBG_BEACON,
+			"resume beacon xmit after %u misses\n",
+			sc->beacon.bmisscnt);
 		sc->beacon.bmisscnt = 0;
 	}
 
@@ -542,21 +440,30 @@ void ath9k_beacon_tasklet(unsigned long data)
 	tsf = ath9k_hw_gettsf64(ah);
 	tsftu = TSF_TO_TU(tsf>>32, tsf);
 	slot = ((tsftu % intval) * ATH_BCBUF) / intval;
-	if_id = sc->beacon.bslot[(slot + 1) % ATH_BCBUF];
+	/*
+	 * Reverse the slot order to get slot 0 on the TBTT offset that does
+	 * not require TSF adjustment and other slots adding
+	 * slot/ATH_BCBUF * beacon_int to timestamp. For example, with
+	 * ATH_BCBUF = 4, we process beacon slots as follows: 3 2 1 0 3 2 1 ..
+	 * and slot 0 is at correct offset to TBTT.
+	 */
+	slot = ATH_BCBUF - slot - 1;
+	vif = sc->beacon.bslot[slot];
+	aphy = sc->beacon.bslot_aphy[slot];
 
 	DPRINTF(sc, ATH_DBG_BEACON,
-		"slot %d [tsf %llu tsftu %u intval %u] if_id %d\n",
-		slot, (unsigned long long)tsf, tsftu,
-		intval, if_id);
+		"slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
+		slot, tsf, tsftu, intval, vif);
 
 	bfaddr = 0;
-	if (if_id != ATH_IF_ID_ANY) {
-		bf = ath_beacon_generate(sc, if_id);
+	if (vif) {
+		bf = ath_beacon_generate(aphy->hw, vif);
 		if (bf != NULL) {
 			bfaddr = bf->bf_daddr;
 			bc = 1;
 		}
 	}
+
 	/*
 	 * Handle slot time change when a non-ERP station joins/leaves
 	 * an 11g network.  The 802.11 layer notifies us via callback,
@@ -573,7 +480,6 @@ void ath9k_beacon_tasklet(unsigned long data)
 	 *     interval has passed.  When bursting slot is always left
 	 *     set to ATH_BCBUF so this check is a noop.
 	 */
-	/* XXX locking */
 	if (sc->beacon.updateslot == UPDATE) {
 		sc->beacon.updateslot = COMMIT; /* commit next beacon */
 		sc->beacon.slotupdate = slot;
@@ -590,265 +496,251 @@ void ath9k_beacon_tasklet(unsigned long data)
 		if (!ath9k_hw_stoptxdma(ah, sc->beacon.beaconq)) {
 			DPRINTF(sc, ATH_DBG_FATAL,
 				"beacon queue %u did not stop?\n", sc->beacon.beaconq);
-			/* NB: the HAL still stops DMA, so proceed */
 		}
 
 		/* NB: cabq traffic should already be queued and primed */
 		ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
 		ath9k_hw_txstart(ah, sc->beacon.beaconq);
 
-		sc->beacon.ast_be_xmit += bc;     /* XXX per-vap? */
+		sc->beacon.ast_be_xmit += bc;     /* XXX per-vif? */
 	}
 }
 
 /*
- * Configure the beacon and sleep timers.
- *
- * When operating as an AP this resets the TSF and sets
- * up the hardware to notify us when we need to issue beacons.
- *
- * When operating in station mode 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.
+ * For multi-bss ap support beacons are either staggered evenly over N slots or
+ * burst together.  For the former arrange for the SWBA to be delivered for each
+ * slot. Slots that are not occupied will generate nothing.
  */
-void ath_beacon_config(struct ath_softc *sc, int if_id)
+static void ath_beacon_config_ap(struct ath_softc *sc,
+				 struct ath_beacon_config *conf,
+				 struct ath_vif *avp)
 {
-	struct ieee80211_vif *vif;
-	struct ath_hal *ah = sc->sc_ah;
-	struct ath_beacon_config conf;
-	struct ath_vap *avp;
-	enum nl80211_iftype opmode;
 	u32 nexttbtt, intval;
 
-	if (if_id != ATH_IF_ID_ANY) {
-		vif = sc->sc_vaps[if_id];
-		ASSERT(vif);
-		avp = (void *)vif->drv_priv;
-		opmode = avp->av_opmode;
-	} else {
-		opmode = sc->sc_ah->ah_opmode;
-	}
+	/* Configure the timers only when the TSF has to be reset */
 
-	memset(&conf, 0, sizeof(struct ath_beacon_config));
+	if (!(sc->sc_flags & SC_OP_TSF_RESET))
+		return;
 
-	conf.beacon_interval = sc->hw->conf.beacon_int ?
-		sc->hw->conf.beacon_int : ATH_DEFAULT_BINTVAL;
-	conf.listen_interval = 1;
-	conf.dtim_period = conf.beacon_interval;
-	conf.dtim_count = 1;
-	conf.bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf.beacon_interval;
+	/* NB: the beacon interval is kept internally in TU's */
+	intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
+	intval /= ATH_BCBUF;    /* for staggered beacons */
+	nexttbtt = intval;
+	intval |= ATH9K_BEACON_RESET_TSF;
 
-	/* extract tstamp from last beacon and convert to TU */
-	nexttbtt = TSF_TO_TU(sc->beacon.bc_tstamp >> 32, sc->beacon.bc_tstamp);
+	/*
+	 * In AP mode we enable the beacon timers and SWBA interrupts to
+	 * prepare beacon frames.
+	 */
+	intval |= ATH9K_BEACON_ENA;
+	sc->imask |= ATH9K_INT_SWBA;
+	ath_beaconq_config(sc);
 
-	/* XXX conditionalize multi-bss support? */
-	if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP) {
-		/*
-		 * For multi-bss ap support beacons are either staggered
-		 * evenly over N slots or burst together.  For the former
-		 * arrange for the SWBA to be delivered for each slot.
-		 * Slots that are not occupied will generate nothing.
-		 */
-		/* NB: the beacon interval is kept internally in TU's */
-		intval = conf.beacon_interval & ATH9K_BEACON_PERIOD;
-		intval /= ATH_BCBUF;    /* for staggered beacons */
-	} else {
-		intval = conf.beacon_interval & ATH9K_BEACON_PERIOD;
-	}
+	/* Set the computed AP beacon timers */
 
-	if (nexttbtt == 0)	/* e.g. for ap mode */
-		nexttbtt = intval;
-	else if (intval)	/* NB: can be 0 for monitor mode */
-		nexttbtt = roundup(nexttbtt, intval);
+	ath9k_hw_set_interrupts(sc->sc_ah, 0);
+	ath9k_hw_beaconinit(sc->sc_ah, nexttbtt, intval);
+	sc->beacon.bmisscnt = 0;
+	ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
 
-	DPRINTF(sc, ATH_DBG_BEACON, "nexttbtt %u intval %u (%u)\n",
-		nexttbtt, intval, conf.beacon_interval);
+	/* Clear the reset TSF flag, so that subsequent beacon updation
+	   will not reset the HW TSF. */
 
-	/* Check for NL80211_IFTYPE_AP and sc_nostabeacons for WDS client */
-	if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) {
-		struct ath9k_beacon_state bs;
-		u64 tsf;
-		u32 tsftu;
-		int dtimperiod, dtimcount, sleepduration;
-		int cfpperiod, cfpcount;
+	sc->sc_flags &= ~SC_OP_TSF_RESET;
+}
 
-		/*
-		 * Setup dtim and cfp parameters according to
-		 * last beacon we received (which may be none).
-		 */
-		dtimperiod = conf.dtim_period;
-		if (dtimperiod <= 0)		/* NB: 0 if not known */
-			dtimperiod = 1;
-		dtimcount = conf.dtim_count;
-		if (dtimcount >= dtimperiod)	/* NB: sanity check */
-			dtimcount = 0;
-		cfpperiod = 1;			/* NB: no PCF support yet */
-		cfpcount = 0;
-
-		sleepduration = conf.listen_interval * intval;
-		if (sleepduration <= 0)
-			sleepduration = intval;
+/*
+ * 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 ath_beacon_config_sta(struct ath_softc *sc,
+				  struct ath_beacon_config *conf,
+				  struct ath_vif *avp)
+{
+	struct ath9k_beacon_state bs;
+	int dtimperiod, dtimcount, sleepduration;
+	int cfpperiod, cfpcount;
+	u32 nexttbtt = 0, intval, tsftu;
+	u64 tsf;
 
-#define FUDGE 2
-		/*
-		 * Pull nexttbtt forward to reflect the current
-		 * TSF and calculate dtim+cfp state for the result.
-		 */
-		tsf = ath9k_hw_gettsf64(ah);
-		tsftu = TSF_TO_TU(tsf>>32, tsf) + FUDGE;
-		do {
-			nexttbtt += intval;
-			if (--dtimcount < 0) {
-				dtimcount = dtimperiod - 1;
-				if (--cfpcount < 0)
-					cfpcount = cfpperiod - 1;
-			}
-		} while (nexttbtt < tsftu);
-#undef FUDGE
-		memset(&bs, 0, sizeof(bs));
-		bs.bs_intval = intval;
-		bs.bs_nexttbtt = nexttbtt;
-		bs.bs_dtimperiod = dtimperiod*intval;
-		bs.bs_nextdtim = bs.bs_nexttbtt + dtimcount*intval;
-		bs.bs_cfpperiod = cfpperiod*bs.bs_dtimperiod;
-		bs.bs_cfpnext = bs.bs_nextdtim + cfpcount*bs.bs_dtimperiod;
-		bs.bs_cfpmaxduration = 0;
+	memset(&bs, 0, sizeof(bs));
+	intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
 
-		/*
-		 * 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.
-		 */
-		if (sleepduration > intval) {
-			bs.bs_bmissthreshold = conf.listen_interval *
-				ATH_DEFAULT_BMISS_LIMIT / 2;
-		} else {
-			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;
-		}
+	/*
+	 * Setup dtim and cfp parameters according to
+	 * last beacon we received (which may be none).
+	 */
+	dtimperiod = conf->dtim_period;
+	if (dtimperiod <= 0)		/* NB: 0 if not known */
+		dtimperiod = 1;
+	dtimcount = conf->dtim_count;
+	if (dtimcount >= dtimperiod)	/* NB: sanity check */
+		dtimcount = 0;
+	cfpperiod = 1;			/* NB: no PCF support yet */
+	cfpcount = 0;
+
+	sleepduration = conf->listen_interval * intval;
+	if (sleepduration <= 0)
+		sleepduration = intval;
 
-		/*
-		 * Calculate sleep duration.  The configuration is
-		 * given in ms.  We insure 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
-		 */
+	/*
+	 * Pull nexttbtt forward to reflect the current
+	 * TSF and calculate dtim+cfp state for the result.
+	 */
+	tsf = ath9k_hw_gettsf64(sc->sc_ah);
+	tsftu = TSF_TO_TU(tsf>>32, tsf) + FUDGE;
+	do {
+		nexttbtt += intval;
+		if (--dtimcount < 0) {
+			dtimcount = dtimperiod - 1;
+			if (--cfpcount < 0)
+				cfpcount = cfpperiod - 1;
+		}
+	} while (nexttbtt < tsftu);
 
-		bs.bs_sleepduration = roundup(IEEE80211_MS_TO_TU(100),
-					      sleepduration);
-		if (bs.bs_sleepduration > bs.bs_dtimperiod)
-			bs.bs_sleepduration = bs.bs_dtimperiod;
+	bs.bs_intval = intval;
+	bs.bs_nexttbtt = nexttbtt;
+	bs.bs_dtimperiod = dtimperiod*intval;
+	bs.bs_nextdtim = bs.bs_nexttbtt + dtimcount*intval;
+	bs.bs_cfpperiod = cfpperiod*bs.bs_dtimperiod;
+	bs.bs_cfpnext = bs.bs_nextdtim + cfpcount*bs.bs_dtimperiod;
+	bs.bs_cfpmaxduration = 0;
 
-		DPRINTF(sc, ATH_DBG_BEACON,
-			"tsf %llu "
-			"tsf:tu %u "
-			"intval %u "
-			"nexttbtt %u "
-			"dtim %u "
-			"nextdtim %u "
-			"bmiss %u "
-			"sleep %u "
-			"cfp:period %u "
-			"maxdur %u "
-			"next %u "
-			"timoffset %u\n",
-			(unsigned long long)tsf, tsftu,
-			bs.bs_intval,
-			bs.bs_nexttbtt,
-			bs.bs_dtimperiod,
-			bs.bs_nextdtim,
-			bs.bs_bmissthreshold,
-			bs.bs_sleepduration,
-			bs.bs_cfpperiod,
-			bs.bs_cfpmaxduration,
-			bs.bs_cfpnext,
-			bs.bs_timoffset
-			);
-
-		ath9k_hw_set_interrupts(ah, 0);
-		ath9k_hw_set_sta_beacon_timers(ah, &bs);
-		sc->sc_imask |= ATH9K_INT_BMISS;
-		ath9k_hw_set_interrupts(ah, sc->sc_imask);
+	/*
+	 * 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.
+	 */
+	if (sleepduration > intval) {
+		bs.bs_bmissthreshold = conf->listen_interval *
+			ATH_DEFAULT_BMISS_LIMIT / 2;
 	} else {
-		u64 tsf;
-		u32 tsftu;
-		ath9k_hw_set_interrupts(ah, 0);
-		if (nexttbtt == intval)
-			intval |= ATH9K_BEACON_RESET_TSF;
-		if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC) {
-			/*
-			 * Pull nexttbtt forward to reflect the current
-			 * TSF
-			 */
-#define FUDGE 2
-			if (!(intval & ATH9K_BEACON_RESET_TSF)) {
-				tsf = ath9k_hw_gettsf64(ah);
-				tsftu = TSF_TO_TU((u32)(tsf>>32),
-					(u32)tsf) + FUDGE;
-				do {
-					nexttbtt += intval;
-				} while (nexttbtt < tsftu);
-			}
-#undef FUDGE
-			DPRINTF(sc, ATH_DBG_BEACON,
-				"IBSS nexttbtt %u intval %u (%u)\n",
-				nexttbtt,
-				intval & ~ATH9K_BEACON_RESET_TSF,
-				conf.beacon_interval);
-
-			/*
-			 * In IBSS mode enable the beacon timers but only
-			 * enable SWBA interrupts if we need to manually
-			 * prepare beacon frames.  Otherwise we use a
-			 * self-linked tx descriptor and let the hardware
-			 * deal with things.
-			 */
-			intval |= ATH9K_BEACON_ENA;
-			if (!(ah->ah_caps.hw_caps & ATH9K_HW_CAP_VEOL))
-				sc->sc_imask |= ATH9K_INT_SWBA;
-			ath_beaconq_config(sc);
-		} else if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP) {
-			/*
-			 * In AP mode we enable the beacon timers and
-			 * SWBA interrupts to prepare beacon frames.
-			 */
-			intval |= ATH9K_BEACON_ENA;
-			sc->sc_imask |= ATH9K_INT_SWBA;   /* beacon prepare */
-			ath_beaconq_config(sc);
-		}
-		ath9k_hw_beaconinit(ah, nexttbtt, intval);
-		sc->beacon.bmisscnt = 0;
-		ath9k_hw_set_interrupts(ah, sc->sc_imask);
-		/*
-		 * When using a self-linked beacon descriptor in
-		 * ibss mode load it once here.
-		 */
-		if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC &&
-		    (ah->ah_caps.hw_caps & ATH9K_HW_CAP_VEOL))
-			ath_beacon_start_adhoc(sc, 0);
+		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 = roundup(IEEE80211_MS_TO_TU(100), sleepduration);
+	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;
+
+	DPRINTF(sc, ATH_DBG_BEACON, "tsf: %llu tsftu: %u\n", tsf, tsftu);
+	DPRINTF(sc, ATH_DBG_BEACON,
+		"bmiss: %u sleep: %u cfp-period: %u maxdur: %u next: %u\n",
+		bs.bs_bmissthreshold, bs.bs_sleepduration,
+		bs.bs_cfpperiod, bs.bs_cfpmaxduration, bs.bs_cfpnext);
+
+	/* Set the computed STA beacon timers */
+
+	ath9k_hw_set_interrupts(sc->sc_ah, 0);
+	ath9k_hw_set_sta_beacon_timers(sc->sc_ah, &bs);
+	sc->imask |= ATH9K_INT_BMISS;
+	ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
 }
 
-void ath_beacon_sync(struct ath_softc *sc, int if_id)
+static void ath_beacon_config_adhoc(struct ath_softc *sc,
+				    struct ath_beacon_config *conf,
+				    struct ath_vif *avp,
+				    struct ieee80211_vif *vif)
 {
+	u64 tsf;
+	u32 tsftu, intval, nexttbtt;
+
+	intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
+
+	/* Pull nexttbtt forward to reflect the current TSF */
+
+	nexttbtt = TSF_TO_TU(sc->beacon.bc_tstamp >> 32, sc->beacon.bc_tstamp);
+	if (nexttbtt == 0)
+                nexttbtt = intval;
+        else if (intval)
+                nexttbtt = roundup(nexttbtt, intval);
+
+	tsf = ath9k_hw_gettsf64(sc->sc_ah);
+	tsftu = TSF_TO_TU((u32)(tsf>>32), (u32)tsf) + FUDGE;
+	do {
+		nexttbtt += intval;
+	} while (nexttbtt < tsftu);
+
+	DPRINTF(sc, ATH_DBG_BEACON,
+		"IBSS nexttbtt %u intval %u (%u)\n",
+		nexttbtt, intval, conf->beacon_interval);
+
 	/*
-	 * Resync beacon timers using the tsf of the
-	 * beacon frame we just received.
+	 * In IBSS mode enable the beacon timers but only enable SWBA interrupts
+	 * if we need to manually prepare beacon frames.  Otherwise we use a
+	 * self-linked tx descriptor and let the hardware deal with things.
 	 */
-	ath_beacon_config(sc, if_id);
-	sc->sc_flags |= SC_OP_BEACONS;
+	intval |= ATH9K_BEACON_ENA;
+	if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_VEOL))
+		sc->imask |= ATH9K_INT_SWBA;
+
+	ath_beaconq_config(sc);
+
+	/* Set the computed ADHOC beacon timers */
+
+	ath9k_hw_set_interrupts(sc->sc_ah, 0);
+	ath9k_hw_beaconinit(sc->sc_ah, nexttbtt, intval);
+	sc->beacon.bmisscnt = 0;
+	ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
+
+	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_VEOL)
+		ath_beacon_start_adhoc(sc, vif);
+}
+
+void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
+{
+	struct ath_beacon_config conf;
+
+	/* Setup the beacon configuration parameters */
+
+	memset(&conf, 0, sizeof(struct ath_beacon_config));
+	conf.beacon_interval = sc->hw->conf.beacon_int ?
+		sc->hw->conf.beacon_int : ATH_DEFAULT_BINTVAL;
+	conf.listen_interval = 1;
+	conf.dtim_period = conf.beacon_interval;
+	conf.dtim_count = 1;
+	conf.bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf.beacon_interval;
+
+	if (vif) {
+		struct ath_vif *avp = (struct ath_vif *)vif->drv_priv;
+
+		switch(avp->av_opmode) {
+		case NL80211_IFTYPE_AP:
+			ath_beacon_config_ap(sc, &conf, avp);
+			break;
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_MESH_POINT:
+			ath_beacon_config_adhoc(sc, &conf, avp, vif);
+			break;
+		case NL80211_IFTYPE_STATION:
+			ath_beacon_config_sta(sc, &conf, avp);
+			break;
+		default:
+			DPRINTF(sc, ATH_DBG_CONFIG,
+				"Unsupported beaconing mode\n");
+			return;
+		}
+
+		sc->sc_flags |= SC_OP_BEACONS;
+	}
 }