#define FUDGE 2
+void ath9k_htc_beaconq_config(struct ath9k_htc_priv *priv)
+{
+ struct ath_hw *ah = priv->ah;
+ struct ath9k_tx_queue_info qi, qi_be;
+
+ memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
+ memset(&qi_be, 0, sizeof(struct ath9k_tx_queue_info));
+
+ ath9k_hw_get_txq_props(ah, priv->beaconq, &qi);
+
+ if (priv->ah->opmode == NL80211_IFTYPE_AP) {
+ qi.tqi_aifs = 1;
+ qi.tqi_cwmin = 0;
+ qi.tqi_cwmax = 0;
+ } else if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
+ int qnum = priv->hwq_map[WME_AC_BE];
+
+ ath9k_hw_get_txq_props(ah, qnum, &qi_be);
+
+ qi.tqi_aifs = qi_be.tqi_aifs;
+
+ /*
+ * For WIFI Beacon Distribution
+ * Long slot time : 2x cwmin
+ * Short slot time : 4x cwmin
+ */
+ if (ah->slottime == ATH9K_SLOT_TIME_20)
+ qi.tqi_cwmin = 2*qi_be.tqi_cwmin;
+ else
+ qi.tqi_cwmin = 4*qi_be.tqi_cwmin;
+
+ qi.tqi_cwmax = qi_be.tqi_cwmax;
+
+ }
+
+ if (!ath9k_hw_set_txq_props(ah, priv->beaconq, &qi)) {
+ ath_err(ath9k_hw_common(ah),
+ "Unable to update beacon queue %u!\n", priv->beaconq);
+ } else {
+ ath9k_hw_resettxqueue(ah, priv->beaconq);
+ }
+}
+
+
static void ath9k_htc_beacon_config_sta(struct ath9k_htc_priv *priv,
struct htc_beacon_config *bss_conf)
{
__be32 htc_imask = 0;
u64 tsf;
int num_beacons, offset, dtim_dec_count, cfp_dec_count;
- int ret;
+ int ret __attribute__ ((unused));
u8 cmd_rsp;
memset(&bs, 0, sizeof(bs));
enum ath9k_int imask = 0;
u32 nexttbtt, intval, tsftu;
__be32 htc_imask = 0;
- int ret;
+ int ret __attribute__ ((unused));
u8 cmd_rsp;
u64 tsf;
intval /= ATH9K_HTC_MAX_BCN_VIF;
nexttbtt = intval;
+ /*
+ * To reduce beacon misses under heavy TX load,
+ * set the beacon response time to a larger value.
+ */
+ if (intval > DEFAULT_SWBA_RESPONSE)
+ priv->ah->config.sw_beacon_response_time = DEFAULT_SWBA_RESPONSE;
+ else
+ priv->ah->config.sw_beacon_response_time = MIN_SWBA_RESPONSE;
+
if (priv->op_flags & OP_TSF_RESET) {
- intval |= ATH9K_BEACON_RESET_TSF;
+ ath9k_hw_reset_tsf(priv->ah);
priv->op_flags &= ~OP_TSF_RESET;
} else {
/*
} while (nexttbtt < tsftu);
}
- intval |= ATH9K_BEACON_ENA;
-
if (priv->op_flags & OP_ENABLE_BEACON)
imask |= ATH9K_INT_SWBA;
ath_dbg(common, ATH_DBG_CONFIG,
- "AP Beacon config, intval: %d, nexttbtt: %u imask: 0x%x\n",
- bss_conf->beacon_interval, nexttbtt, imask);
+ "AP Beacon config, intval: %d, nexttbtt: %u, resp_time: %d "
+ "imask: 0x%x\n",
+ bss_conf->beacon_interval, nexttbtt,
+ priv->ah->config.sw_beacon_response_time, imask);
+
+ ath9k_htc_beaconq_config(priv);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
- ath9k_hw_beaconinit(priv->ah, nexttbtt, intval);
- priv->bmiss_cnt = 0;
+ ath9k_hw_beaconinit(priv->ah, TU_TO_USEC(nexttbtt), TU_TO_USEC(intval));
+ priv->cur_beacon_conf.bmiss_cnt = 0;
htc_imask = cpu_to_be32(imask);
WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask);
}
enum ath9k_int imask = 0;
u32 nexttbtt, intval, tsftu;
__be32 htc_imask = 0;
- int ret;
+ int ret __attribute__ ((unused));
u8 cmd_rsp;
u64 tsf;
nexttbtt += intval;
} while (nexttbtt < tsftu);
- intval |= ATH9K_BEACON_ENA;
+ /*
+ * Only one IBSS interfce is allowed.
+ */
+ if (intval > DEFAULT_SWBA_RESPONSE)
+ priv->ah->config.sw_beacon_response_time = DEFAULT_SWBA_RESPONSE;
+ else
+ priv->ah->config.sw_beacon_response_time = MIN_SWBA_RESPONSE;
+
if (priv->op_flags & OP_ENABLE_BEACON)
imask |= ATH9K_INT_SWBA;
ath_dbg(common, ATH_DBG_CONFIG,
- "IBSS Beacon config, intval: %d, nexttbtt: %u, imask: 0x%x\n",
- bss_conf->beacon_interval, nexttbtt, imask);
+ "IBSS Beacon config, intval: %d, nexttbtt: %u, "
+ "resp_time: %d, imask: 0x%x\n",
+ bss_conf->beacon_interval, nexttbtt,
+ priv->ah->config.sw_beacon_response_time, imask);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
- ath9k_hw_beaconinit(priv->ah, nexttbtt, intval);
- priv->bmiss_cnt = 0;
+ ath9k_hw_beaconinit(priv->ah, TU_TO_USEC(nexttbtt), TU_TO_USEC(intval));
+ priv->cur_beacon_conf.bmiss_cnt = 0;
htc_imask = cpu_to_be32(imask);
WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask);
}
dev_kfree_skb_any(skb);
}
-void ath9k_htc_swba(struct ath9k_htc_priv *priv, u8 beacon_pending)
+static void ath9k_htc_send_buffered(struct ath9k_htc_priv *priv,
+ int slot)
{
- struct ath9k_htc_vif *avp = (void *)priv->vif->drv_priv;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ieee80211_vif *vif;
+ struct sk_buff *skb;
+ struct ieee80211_hdr *hdr;
+ int padpos, padsize, ret, tx_slot;
+
+ spin_lock_bh(&priv->beacon_lock);
+
+ vif = priv->cur_beacon_conf.bslot[slot];
+
+ skb = ieee80211_get_buffered_bc(priv->hw, vif);
+
+ while(skb) {
+ hdr = (struct ieee80211_hdr *) skb->data;
+
+ padpos = ath9k_cmn_padpos(hdr->frame_control);
+ padsize = padpos & 3;
+ if (padsize && skb->len > padpos) {
+ if (skb_headroom(skb) < padsize) {
+ dev_kfree_skb_any(skb);
+ goto next;
+ }
+ skb_push(skb, padsize);
+ memmove(skb->data, skb->data + padsize, padpos);
+ }
+
+ tx_slot = ath9k_htc_tx_get_slot(priv);
+ if (tx_slot < 0) {
+ ath_dbg(common, ATH_DBG_XMIT, "No free CAB slot\n");
+ dev_kfree_skb_any(skb);
+ goto next;
+ }
+
+ ret = ath9k_htc_tx_start(priv, skb, tx_slot, true);
+ if (ret != 0) {
+ ath9k_htc_tx_clear_slot(priv, tx_slot);
+ dev_kfree_skb_any(skb);
+
+ ath_dbg(common, ATH_DBG_XMIT,
+ "Failed to send CAB frame\n");
+ } else {
+ spin_lock_bh(&priv->tx.tx_lock);
+ priv->tx.queued_cnt++;
+ spin_unlock_bh(&priv->tx.tx_lock);
+ }
+ next:
+ skb = ieee80211_get_buffered_bc(priv->hw, vif);
+ }
+
+ spin_unlock_bh(&priv->beacon_lock);
+}
+
+static void ath9k_htc_send_beacon(struct ath9k_htc_priv *priv,
+ int slot)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ieee80211_vif *vif;
+ struct ath9k_htc_vif *avp;
struct tx_beacon_header beacon_hdr;
- struct ath9k_htc_tx_ctl tx_ctl;
+ struct ath9k_htc_tx_ctl *tx_ctl;
struct ieee80211_tx_info *info;
+ struct ieee80211_mgmt *mgmt;
struct sk_buff *beacon;
u8 *tx_fhdr;
+ int ret;
memset(&beacon_hdr, 0, sizeof(struct tx_beacon_header));
- memset(&tx_ctl, 0, sizeof(struct ath9k_htc_tx_ctl));
-
- /* FIXME: Handle BMISS */
- if (beacon_pending != 0) {
- priv->bmiss_cnt++;
- return;
- }
spin_lock_bh(&priv->beacon_lock);
+ vif = priv->cur_beacon_conf.bslot[slot];
+ avp = (struct ath9k_htc_vif *)vif->drv_priv;
+
if (unlikely(priv->op_flags & OP_SCANNING)) {
spin_unlock_bh(&priv->beacon_lock);
return;
}
/* Get a new beacon */
- beacon = ieee80211_beacon_get(priv->hw, priv->vif);
+ beacon = ieee80211_beacon_get(priv->hw, vif);
if (!beacon) {
spin_unlock_bh(&priv->beacon_lock);
return;
}
+ /*
+ * Update the TSF adjust value here, the HW will
+ * add this value for every beacon.
+ */
+ mgmt = (struct ieee80211_mgmt *)beacon->data;
+ mgmt->u.beacon.timestamp = avp->tsfadjust;
+
info = IEEE80211_SKB_CB(beacon);
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
struct ieee80211_hdr *hdr =
hdr->seq_ctrl |= cpu_to_le16(avp->seq_no);
}
- tx_ctl.type = ATH9K_HTC_NORMAL;
+ tx_ctl = HTC_SKB_CB(beacon);
+ memset(tx_ctl, 0, sizeof(*tx_ctl));
+
+ tx_ctl->type = ATH9K_HTC_BEACON;
+ tx_ctl->epid = priv->beacon_ep;
+
beacon_hdr.vif_index = avp->index;
tx_fhdr = skb_push(beacon, sizeof(beacon_hdr));
memcpy(tx_fhdr, (u8 *) &beacon_hdr, sizeof(beacon_hdr));
- htc_send(priv->htc, beacon, priv->beacon_ep, &tx_ctl);
+ ret = htc_send(priv->htc, beacon);
+ if (ret != 0) {
+ if (ret == -ENOMEM) {
+ ath_dbg(common, ATH_DBG_BSTUCK,
+ "Failed to send beacon, no free TX buffer\n");
+ }
+ dev_kfree_skb_any(beacon);
+ }
spin_unlock_bh(&priv->beacon_lock);
}
-/* Currently, only for IBSS */
-void ath9k_htc_beaconq_config(struct ath9k_htc_priv *priv)
+static int ath9k_htc_choose_bslot(struct ath9k_htc_priv *priv,
+ struct wmi_event_swba *swba)
{
- struct ath_hw *ah = priv->ah;
- struct ath9k_tx_queue_info qi, qi_be;
- int qnum = priv->hwq_map[WME_AC_BE];
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ u64 tsf;
+ u32 tsftu;
+ u16 intval;
+ int slot;
- memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
- memset(&qi_be, 0, sizeof(struct ath9k_tx_queue_info));
+ intval = priv->cur_beacon_conf.beacon_interval & ATH9K_BEACON_PERIOD;
- ath9k_hw_get_txq_props(ah, qnum, &qi_be);
+ tsf = be64_to_cpu(swba->tsf);
+ tsftu = TSF_TO_TU(tsf >> 32, tsf);
+ slot = ((tsftu % intval) * ATH9K_HTC_MAX_BCN_VIF) / intval;
+ slot = ATH9K_HTC_MAX_BCN_VIF - slot - 1;
- qi.tqi_aifs = qi_be.tqi_aifs;
- /* For WIFI Beacon Distribution
- * Long slot time : 2x cwmin
- * Short slot time : 4x cwmin
- */
- if (ah->slottime == ATH9K_SLOT_TIME_20)
- qi.tqi_cwmin = 2*qi_be.tqi_cwmin;
- else
- qi.tqi_cwmin = 4*qi_be.tqi_cwmin;
- qi.tqi_cwmax = qi_be.tqi_cwmax;
+ ath_dbg(common, ATH_DBG_BEACON,
+ "Choose slot: %d, tsf: %llu, tsftu: %u, intval: %u\n",
+ slot, tsf, tsftu, intval);
- if (!ath9k_hw_set_txq_props(ah, priv->beaconq, &qi)) {
- ath_err(ath9k_hw_common(ah),
- "Unable to update beacon queue %u!\n", qnum);
- } else {
- ath9k_hw_resettxqueue(ah, priv->beaconq);
+ return slot;
+}
+
+void ath9k_htc_swba(struct ath9k_htc_priv *priv,
+ struct wmi_event_swba *swba)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ int slot;
+
+ if (swba->beacon_pending != 0) {
+ priv->cur_beacon_conf.bmiss_cnt++;
+ if (priv->cur_beacon_conf.bmiss_cnt > BSTUCK_THRESHOLD) {
+ ath_dbg(common, ATH_DBG_BSTUCK,
+ "Beacon stuck, HW reset\n");
+ ieee80211_queue_work(priv->hw,
+ &priv->fatal_work);
+ }
+ return;
}
+
+ if (priv->cur_beacon_conf.bmiss_cnt) {
+ ath_dbg(common, ATH_DBG_BSTUCK,
+ "Resuming beacon xmit after %u misses\n",
+ priv->cur_beacon_conf.bmiss_cnt);
+ priv->cur_beacon_conf.bmiss_cnt = 0;
+ }
+
+ slot = ath9k_htc_choose_bslot(priv, swba);
+ spin_lock_bh(&priv->beacon_lock);
+ if (priv->cur_beacon_conf.bslot[slot] == NULL) {
+ spin_unlock_bh(&priv->beacon_lock);
+ return;
+ }
+ spin_unlock_bh(&priv->beacon_lock);
+
+ ath9k_htc_send_buffered(priv, slot);
+ ath9k_htc_send_beacon(priv, slot);
+}
+
+void ath9k_htc_assign_bslot(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv;
+ int i = 0;
+
+ spin_lock_bh(&priv->beacon_lock);
+ for (i = 0; i < ATH9K_HTC_MAX_BCN_VIF; i++) {
+ if (priv->cur_beacon_conf.bslot[i] == NULL) {
+ avp->bslot = i;
+ break;
+ }
+ }
+
+ priv->cur_beacon_conf.bslot[avp->bslot] = vif;
+ spin_unlock_bh(&priv->beacon_lock);
+
+ ath_dbg(common, ATH_DBG_CONFIG,
+ "Added interface at beacon slot: %d\n", avp->bslot);
+}
+
+void ath9k_htc_remove_bslot(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv;
+
+ spin_lock_bh(&priv->beacon_lock);
+ priv->cur_beacon_conf.bslot[avp->bslot] = NULL;
+ spin_unlock_bh(&priv->beacon_lock);
+
+ ath_dbg(common, ATH_DBG_CONFIG,
+ "Removed interface at beacon slot: %d\n", avp->bslot);
+}
+
+/*
+ * Calculate the TSF adjustment value for all slots
+ * other than zero.
+ */
+void ath9k_htc_set_tsfadjust(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv;
+ struct htc_beacon_config *cur_conf = &priv->cur_beacon_conf;
+ u64 tsfadjust;
+
+ if (avp->bslot == 0)
+ return;
+
+ /*
+ * The beacon interval cannot be different for multi-AP mode,
+ * and we reach here only for VIF slots greater than zero,
+ * so beacon_interval is guaranteed to be set in cur_conf.
+ */
+ tsfadjust = cur_conf->beacon_interval * avp->bslot / ATH9K_HTC_MAX_BCN_VIF;
+ avp->tsfadjust = cpu_to_le64(TU_TO_USEC(tsfadjust));
+
+ ath_dbg(common, ATH_DBG_CONFIG,
+ "tsfadjust is: %llu for bslot: %d\n",
+ (unsigned long long)tsfadjust, avp->bslot);
}
static void ath9k_htc_beacon_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
git.openpandora.org / pandora-kernel.git / blobdiff