From 2dac4fb97a41af1e6b7ab9f59c837d20838e92da Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Sun, 9 Jan 2011 23:11:45 -0800 Subject: [PATCH] ath9k: Add more information to debugfs xmit file. Should help debug strange tx lockup type issues. Signed-off-by: Ben Greear Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/debug.c | 29 ++++++++++++++++++++++++-- drivers/net/wireless/ath/ath9k/debug.h | 6 ++++++ drivers/net/wireless/ath/ath9k/mac.c | 8 +++++++ drivers/net/wireless/ath/ath9k/xmit.c | 1 + 4 files changed, 42 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index 5075faa618d3..577bc5a9835b 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -599,13 +599,25 @@ do { \ (unsigned int)(sc->tx.txq[WME_AC_VO].elem)); \ } while(0) +#define PRQLE(str, elem) \ +do { \ + len += snprintf(buf + len, size - len, \ + "%s%13i%11i%10i%10i\n", str, \ + list_empty(&sc->tx.txq[WME_AC_BE].elem), \ + list_empty(&sc->tx.txq[WME_AC_BK].elem), \ + list_empty(&sc->tx.txq[WME_AC_VI].elem), \ + list_empty(&sc->tx.txq[WME_AC_VO].elem)); \ +} while (0) + static ssize_t read_file_xmit(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ath_softc *sc = file->private_data; char *buf; - unsigned int len = 0, size = 2048; + unsigned int len = 0, size = 4000; + int i; ssize_t retval = 0; + char tmp[32]; buf = kzalloc(size, GFP_KERNEL); if (buf == NULL) @@ -628,13 +640,26 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf, PR("DELIM Underrun: ", delim_underrun); PR("TX-Pkts-All: ", tx_pkts_all); PR("TX-Bytes-All: ", tx_bytes_all); + PR("hw-put-tx-buf: ", puttxbuf); + PR("hw-tx-start: ", txstart); + PR("hw-tx-proc-desc: ", txprocdesc); PRX("axq-qnum: ", axq_qnum); PRX("axq-depth: ", axq_depth); + PRX("axq-ampdu_depth: ", axq_ampdu_depth); PRX("axq-stopped ", stopped); PRX("tx-in-progress ", axq_tx_inprogress); PRX("pending-frames ", pending_frames); - + PRX("txq_headidx: ", txq_headidx); + PRX("txq_tailidx: ", txq_headidx); + + PRQLE("axq_q empty: ", axq_q); + PRQLE("axq_acq empty: ", axq_acq); + PRQLE("txq_fifo_pending: ", txq_fifo_pending); + for (i = 0; i < ATH_TXFIFO_DEPTH; i++) { + snprintf(tmp, sizeof(tmp) - 1, "txq_fifo[%i] empty: ", i); + PRQLE(tmp, txq_fifo[i]); + } if (len > size) len = size; diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h index 1e5078bd0344..cd2db3fd7b7e 100644 --- a/drivers/net/wireless/ath/ath9k/debug.h +++ b/drivers/net/wireless/ath/ath9k/debug.h @@ -102,6 +102,9 @@ struct ath_interrupt_stats { * @desc_cfg_err: Descriptor configuration errors * @data_urn: TX data underrun errors * @delim_urn: TX delimiter underrun errors + * @puttxbuf: Number of times hardware was given txbuf to write. + * @txstart: Number of times hardware was told to start tx. + * @txprocdesc: Number of times tx descriptor was processed */ struct ath_tx_stats { u32 tx_pkts_all; @@ -119,6 +122,9 @@ struct ath_tx_stats { u32 desc_cfg_err; u32 data_underrun; u32 delim_underrun; + u32 puttxbuf; + u32 txstart; + u32 txprocdesc; }; /** diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c index c75d40fb86f1..5f2b93441e5c 100644 --- a/drivers/net/wireless/ath/ath9k/mac.c +++ b/drivers/net/wireless/ath/ath9k/mac.c @@ -16,6 +16,8 @@ #include "hw.h" #include "hw-ops.h" +#include "debug.h" +#include "ath9k.h" static void ath9k_hw_set_txq_interrupts(struct ath_hw *ah, struct ath9k_tx_queue_info *qi) @@ -50,12 +52,18 @@ EXPORT_SYMBOL(ath9k_hw_gettxbuf); void ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp) { + struct ath_wiphy *aphy = ah->hw->priv; + struct ath_softc *sc = aphy->sc; + TX_STAT_INC(q, puttxbuf); REG_WRITE(ah, AR_QTXDP(q), txdp); } EXPORT_SYMBOL(ath9k_hw_puttxbuf); void ath9k_hw_txstart(struct ath_hw *ah, u32 q) { + struct ath_wiphy *aphy = ah->hw->priv; + struct ath_softc *sc = aphy->sc; + TX_STAT_INC(q, txstart); ath_dbg(ath9k_hw_common(ah), ATH_DBG_QUEUE, "Enable TXE on queue: %u\n", q); REG_WRITE(ah, AR_Q_TXE, 1 << q); diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index ad569e152d78..aa67d641f140 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -2039,6 +2039,7 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq) spin_unlock_bh(&txq->axq_lock); break; } + TX_STAT_INC(txq->axq_qnum, txprocdesc); /* * Remove ath_buf's of the same transmit unit from txq, -- 2.30.2