From ed261a611b793c8fc81121c6d244ddf108412f13 Mon Sep 17 00:00:00 2001
From: Adrian Chadd <adrian@FreeBSD.org>
Date: Fri, 26 Apr 2013 21:51:17 +0000
Subject: [PATCH] Dump the entire TXQ descriptor contents during a reset,
 rather than only completed descriptors.

---
 sys/dev/ath/if_ath.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/sys/dev/ath/if_ath.c b/sys/dev/ath/if_ath.c
index d23c76dda753..aee230bceaa3 100644
--- a/sys/dev/ath/if_ath.c
+++ b/sys/dev/ath/if_ath.c
@@ -4500,6 +4500,30 @@ ath_stoptxdma(struct ath_softc *sc)
 	return 1;
 }
 
+static void
+ath_tx_dump(struct ath_softc *sc, struct ath_txq *txq)
+{
+	struct ath_hal *ah = sc->sc_ah;
+	struct ath_buf *bf;
+	int i = 0;
+
+	if (! (sc->sc_debug & ATH_DEBUG_RESET))
+		return;
+
+	ATH_TX_LOCK_ASSERT(sc);
+
+	device_printf(sc->sc_dev, "%s: Q%d: begin\n",
+	    __func__, txq->axq_qnum);
+	TAILQ_FOREACH(bf, &txq->axq_q, bf_list) {
+		ath_printtxbuf(sc, bf, txq->axq_qnum, i,
+			ath_hal_txprocdesc(ah, bf->bf_lastds,
+			    &bf->bf_status.ds_txstat) == HAL_OK);
+		i++;
+	}
+	device_printf(sc->sc_dev, "%s: Q%d: end\n",
+	    __func__, txq->axq_qnum);
+}
+
 /*
  * Drain the transmit queues and reclaim resources.
  */
@@ -4514,12 +4538,17 @@ ath_legacy_tx_drain(struct ath_softc *sc, ATH_RESET_TYPE reset_type)
 
 	(void) ath_stoptxdma(sc);
 
+	/*
+	 * Dump the queue contents
+	 */
 	for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
 		/*
 		 * XXX TODO: should we just handle the completed TX frames
 		 * here, whether or not the reset is a full one or not?
 		 */
 		if (ATH_TXQ_SETUP(sc, i)) {
+			if (sc->sc_debug & ATH_DEBUG_RESET)
+				ath_tx_dump(sc, &sc->sc_txq[i]);
 			if (reset_type == ATH_RESET_NOLOSS)
 				ath_tx_processq(sc, &sc->sc_txq[i], 0);
 			else