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path: root/drivers/net/wireless/ath/ath9k/xmit.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/xmit.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/xmit.c136
1 files changed, 71 insertions, 65 deletions
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index dcac811..68a1c76 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -55,8 +55,9 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
struct list_head *head);
static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len);
-static void ath_tx_rc_status(struct ath_buf *bf, struct ath_tx_status *ts,
- int nframes, int nbad, int txok, bool update_rc);
+static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf,
+ struct ath_tx_status *ts, int nframes, int nbad,
+ int txok, bool update_rc);
static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
int seqno);
@@ -295,7 +296,6 @@ static struct ath_buf* ath_clone_txbuf(struct ath_softc *sc, struct ath_buf *bf)
ATH_TXBUF_RESET(tbf);
- tbf->aphy = bf->aphy;
tbf->bf_mpdu = bf->bf_mpdu;
tbf->bf_buf_addr = bf->bf_buf_addr;
memcpy(tbf->bf_desc, bf->bf_desc, sc->sc_ah->caps.tx_desc_len);
@@ -343,7 +343,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
struct ath_node *an = NULL;
struct sk_buff *skb;
struct ieee80211_sta *sta;
- struct ieee80211_hw *hw;
+ struct ieee80211_hw *hw = sc->hw;
struct ieee80211_hdr *hdr;
struct ieee80211_tx_info *tx_info;
struct ath_atx_tid *tid = NULL;
@@ -362,7 +362,6 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
hdr = (struct ieee80211_hdr *)skb->data;
tx_info = IEEE80211_SKB_CB(skb);
- hw = bf->aphy->hw;
memcpy(rates, tx_info->control.rates, sizeof(rates));
@@ -381,7 +380,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
!bf->bf_stale || bf_next != NULL)
list_move_tail(&bf->list, &bf_head);
- ath_tx_rc_status(bf, ts, 1, 1, 0, false);
+ ath_tx_rc_status(sc, bf, ts, 1, 1, 0, false);
ath_tx_complete_buf(sc, bf, txq, &bf_head, ts,
0, 0);
@@ -487,10 +486,10 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
if (rc_update && (acked_cnt == 1 || txfail_cnt == 1)) {
memcpy(tx_info->control.rates, rates, sizeof(rates));
- ath_tx_rc_status(bf, ts, nframes, nbad, txok, true);
+ ath_tx_rc_status(sc, bf, ts, nframes, nbad, txok, true);
rc_update = false;
} else {
- ath_tx_rc_status(bf, ts, nframes, nbad, txok, false);
+ ath_tx_rc_status(sc, bf, ts, nframes, nbad, txok, false);
}
ath_tx_complete_buf(sc, bf, txq, &bf_head, ts,
@@ -514,7 +513,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
bf->bf_state.bf_type |=
BUF_XRETRY;
- ath_tx_rc_status(bf, ts, nframes,
+ ath_tx_rc_status(sc, bf, ts, nframes,
nbad, 0, false);
ath_tx_complete_buf(sc, bf, txq,
&bf_head,
@@ -564,8 +563,11 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
rcu_read_unlock();
- if (needreset)
+ if (needreset) {
+ spin_unlock_bh(&sc->sc_pcu_lock);
ath_reset(sc, false);
+ spin_lock_bh(&sc->sc_pcu_lock);
+ }
}
static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
@@ -1207,8 +1209,17 @@ bool ath_drain_all_txq(struct ath_softc *sc, bool retry_tx)
ath_err(common, "Failed to stop TX DMA!\n");
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
- if (ATH_TXQ_SETUP(sc, i))
- ath_draintxq(sc, &sc->tx.txq[i], retry_tx);
+ if (!ATH_TXQ_SETUP(sc, i))
+ continue;
+
+ /*
+ * The caller will resume queues with ieee80211_wake_queues.
+ * Mark the queue as not stopped to prevent ath_tx_complete
+ * from waking the queue too early.
+ */
+ txq = &sc->tx.txq[i];
+ txq->stopped = false;
+ ath_draintxq(sc, txq, retry_tx);
}
return !npend;
@@ -1435,8 +1446,7 @@ static enum ath9k_pkt_type get_hw_packet_type(struct sk_buff *skb)
static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb,
int framelen)
{
- struct ath_wiphy *aphy = hw->priv;
- struct ath_softc *sc = aphy->sc;
+ struct ath_softc *sc = hw->priv;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_sta *sta = tx_info->control.sta;
struct ieee80211_key_conf *hw_key = tx_info->control.hw_key;
@@ -1654,8 +1664,7 @@ static struct ath_buf *ath_tx_setup_buffer(struct ieee80211_hw *hw,
struct ath_txq *txq,
struct sk_buff *skb)
{
- struct ath_wiphy *aphy = hw->priv;
- struct ath_softc *sc = aphy->sc;
+ struct ath_softc *sc = hw->priv;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_frame_info *fi = get_frame_info(skb);
@@ -1671,7 +1680,6 @@ static struct ath_buf *ath_tx_setup_buffer(struct ieee80211_hw *hw,
ATH_TXBUF_RESET(bf);
- bf->aphy = aphy;
bf->bf_flags = setup_tx_flags(skb);
bf->bf_mpdu = skb;
@@ -1757,8 +1765,7 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_sta *sta = info->control.sta;
- struct ath_wiphy *aphy = hw->priv;
- struct ath_softc *sc = aphy->sc;
+ struct ath_softc *sc = hw->priv;
struct ath_txq *txq = txctl->txq;
struct ath_buf *bf;
int padpos, padsize;
@@ -1810,7 +1817,7 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
spin_lock_bh(&txq->axq_lock);
if (txq == sc->tx.txq_map[q] &&
++txq->pending_frames > ATH_MAX_QDEPTH && !txq->stopped) {
- ath_mac80211_stop_queue(sc, q);
+ ieee80211_stop_queue(sc->hw, q);
txq->stopped = 1;
}
spin_unlock_bh(&txq->axq_lock);
@@ -1825,8 +1832,7 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
/*****************/
static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
- struct ath_wiphy *aphy, int tx_flags, int ftype,
- struct ath_txq *txq)
+ int tx_flags, int ftype, struct ath_txq *txq)
{
struct ieee80211_hw *hw = sc->hw;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
@@ -1836,9 +1842,6 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
ath_dbg(common, ATH_DBG_XMIT, "TX complete: skb: %p\n", skb);
- if (aphy)
- hw = aphy->hw;
-
if (tx_flags & ATH_TX_BAR)
tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
@@ -1868,19 +1871,20 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
PS_WAIT_FOR_TX_ACK));
}
- if (unlikely(ftype))
- ath9k_tx_status(hw, skb, ftype);
- else {
- q = skb_get_queue_mapping(skb);
- if (txq == sc->tx.txq_map[q]) {
- spin_lock_bh(&txq->axq_lock);
- if (WARN_ON(--txq->pending_frames < 0))
- txq->pending_frames = 0;
- spin_unlock_bh(&txq->axq_lock);
- }
+ q = skb_get_queue_mapping(skb);
+ if (txq == sc->tx.txq_map[q]) {
+ spin_lock_bh(&txq->axq_lock);
+ if (WARN_ON(--txq->pending_frames < 0))
+ txq->pending_frames = 0;
- ieee80211_tx_status(hw, skb);
+ if (txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
+ ieee80211_wake_queue(sc->hw, q);
+ txq->stopped = 0;
+ }
+ spin_unlock_bh(&txq->axq_lock);
}
+
+ ieee80211_tx_status(hw, skb);
}
static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
@@ -1910,8 +1914,8 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
else
complete(&sc->paprd_complete);
} else {
- ath_debug_stat_tx(sc, bf, ts);
- ath_tx_complete(sc, skb, bf->aphy, tx_flags,
+ ath_debug_stat_tx(sc, bf, ts, txq);
+ ath_tx_complete(sc, skb, tx_flags,
bf->bf_state.bfs_ftype, txq);
}
/* At this point, skb (bf->bf_mpdu) is consumed...make sure we don't
@@ -1927,14 +1931,14 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
spin_unlock_irqrestore(&sc->tx.txbuflock, flags);
}
-static void ath_tx_rc_status(struct ath_buf *bf, struct ath_tx_status *ts,
- int nframes, int nbad, int txok, bool update_rc)
+static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf,
+ struct ath_tx_status *ts, int nframes, int nbad,
+ int txok, bool update_rc)
{
struct sk_buff *skb = bf->bf_mpdu;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
- struct ieee80211_hw *hw = bf->aphy->hw;
- struct ath_softc *sc = bf->aphy->sc;
+ struct ieee80211_hw *hw = sc->hw;
struct ath_hw *ah = sc->sc_ah;
u8 i, tx_rateindex;
@@ -1985,18 +1989,6 @@ static void ath_tx_rc_status(struct ath_buf *bf, struct ath_tx_status *ts,
tx_info->status.rates[tx_rateindex].count = ts->ts_longretry + 1;
}
-/* Has no locking. Must hold spin_lock_bh(&txq->axq_lock)
- * before calling this.
- */
-static void __ath_wake_mac80211_queue(struct ath_softc *sc, struct ath_txq *txq)
-{
- if (txq->mac80211_qnum >= 0 &&
- txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
- if (ath_mac80211_start_queue(sc, txq->mac80211_qnum))
- txq->stopped = 0;
- }
-}
-
static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
{
struct ath_hw *ah = sc->sc_ah;
@@ -2007,7 +1999,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
struct ath_tx_status ts;
int txok;
int status;
- int qnum;
ath_dbg(common, ATH_DBG_QUEUE, "tx queue %d (%x), link %p\n",
txq->axq_qnum, ath9k_hw_gettxbuf(sc->sc_ah, txq->axq_qnum),
@@ -2086,11 +2077,9 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
*/
if (ts.ts_status & ATH9K_TXERR_XRETRY)
bf->bf_state.bf_type |= BUF_XRETRY;
- ath_tx_rc_status(bf, &ts, 1, txok ? 0 : 1, txok, true);
+ ath_tx_rc_status(sc, bf, &ts, 1, txok ? 0 : 1, txok, true);
}
- qnum = skb_get_queue_mapping(bf->bf_mpdu);
-
if (bf_isampdu(bf))
ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, txok,
true);
@@ -2098,7 +2087,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, txok, 0);
spin_lock_bh(&txq->axq_lock);
- __ath_wake_mac80211_queue(sc, txq);
if (sc->sc_flags & SC_OP_TXAGGR)
ath_txq_schedule(sc, txq);
@@ -2106,6 +2094,28 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
}
}
+static void ath_hw_pll_work(struct work_struct *work)
+{
+ struct ath_softc *sc = container_of(work, struct ath_softc,
+ hw_pll_work.work);
+ static int count;
+
+ if (AR_SREV_9485(sc->sc_ah)) {
+ if (ar9003_get_pll_sqsum_dvc(sc->sc_ah) >= 0x40000) {
+ count++;
+
+ if (count == 3) {
+ /* Rx is hung for more than 500ms. Reset it */
+ ath_reset(sc, true);
+ count = 0;
+ }
+ } else
+ count = 0;
+
+ ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
+ }
+}
+
static void ath_tx_complete_poll_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc,
@@ -2154,7 +2164,6 @@ static void ath_tx_complete_poll_work(struct work_struct *work)
txq->pending_frames,
list_empty(&txq->axq_acq),
txq->stopped);
- __ath_wake_mac80211_queue(sc, txq);
ath_txq_schedule(sc, txq);
}
}
@@ -2196,7 +2205,6 @@ void ath_tx_edma_tasklet(struct ath_softc *sc)
struct list_head bf_head;
int status;
int txok;
- int qnum;
for (;;) {
status = ath9k_hw_txprocdesc(ah, NULL, (void *)&txs);
@@ -2239,11 +2247,9 @@ void ath_tx_edma_tasklet(struct ath_softc *sc)
if (!bf_isampdu(bf)) {
if (txs.ts_status & ATH9K_TXERR_XRETRY)
bf->bf_state.bf_type |= BUF_XRETRY;
- ath_tx_rc_status(bf, &txs, 1, txok ? 0 : 1, txok, true);
+ ath_tx_rc_status(sc, bf, &txs, 1, txok ? 0 : 1, txok, true);
}
- qnum = skb_get_queue_mapping(bf->bf_mpdu);
-
if (bf_isampdu(bf))
ath_tx_complete_aggr(sc, txq, bf, &bf_head, &txs,
txok, true);
@@ -2252,7 +2258,6 @@ void ath_tx_edma_tasklet(struct ath_softc *sc)
&txs, txok, 0);
spin_lock_bh(&txq->axq_lock);
- __ath_wake_mac80211_queue(sc, txq);
if (!list_empty(&txq->txq_fifo_pending)) {
INIT_LIST_HEAD(&bf_head);
@@ -2330,6 +2335,7 @@ int ath_tx_init(struct ath_softc *sc, int nbufs)
}
INIT_DELAYED_WORK(&sc->tx_complete_work, ath_tx_complete_poll_work);
+ INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
error = ath_tx_edma_init(sc);
generated by cgit v0.10.2 at 2024-08-17 16:47:38 (GMT)