mirror of https://github.com/hak5/openwrt.git
73 lines
2.3 KiB
Diff
73 lines
2.3 KiB
Diff
--- a/drivers/net/wireless/ath/ath9k/xmit.c
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+++ b/drivers/net/wireless/ath/ath9k/xmit.c
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@@ -1271,16 +1271,14 @@ bool ath_drain_all_txq(struct ath_softc
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if (sc->sc_flags & SC_OP_INVALID)
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return true;
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- /* Stop beacon queue */
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- ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
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+ ath9k_hw_abort_tx_dma(ah);
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- /* Stop data queues */
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+ /* Check if any queue remains active */
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for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
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- if (ATH_TXQ_SETUP(sc, i)) {
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- txq = &sc->tx.txq[i];
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- ath9k_hw_stoptxdma(ah, txq->axq_qnum);
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- npend += ath9k_hw_numtxpending(ah, txq->axq_qnum);
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- }
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+ if (!ATH_TXQ_SETUP(sc, i))
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+ continue;
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+
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+ npend += ath9k_hw_numtxpending(ah, sc->tx.txq[i].axq_qnum);
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}
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if (npend)
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--- a/drivers/net/wireless/ath/ath9k/mac.c
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+++ b/drivers/net/wireless/ath/ath9k/mac.c
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@@ -143,6 +143,34 @@ bool ath9k_hw_updatetxtriglevel(struct a
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}
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EXPORT_SYMBOL(ath9k_hw_updatetxtriglevel);
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+void ath9k_hw_abort_tx_dma(struct ath_hw *ah)
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+{
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+ int i, q;
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+
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+ REG_WRITE(ah, AR_Q_TXD, AR_Q_TXD_M);
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+
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+ REG_SET_BIT(ah, AR_PCU_MISC, AR_PCU_FORCE_QUIET_COLL | AR_PCU_CLEAR_VMF);
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+ REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
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+ REG_SET_BIT(ah, AR_D_GBL_IFS_MISC, AR_D_GBL_IFS_MISC_IGNORE_BACKOFF);
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+
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+ for (q = 0; q < AR_NUM_QCU; q++) {
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+ for (i = 0; i < 1000; i++) {
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+ if (i)
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+ udelay(5);
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+
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+ if (!ath9k_hw_numtxpending(ah, q))
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+ break;
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+ }
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+ }
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+
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+ REG_CLR_BIT(ah, AR_PCU_MISC, AR_PCU_FORCE_QUIET_COLL | AR_PCU_CLEAR_VMF);
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+ REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
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+ REG_CLR_BIT(ah, AR_D_GBL_IFS_MISC, AR_D_GBL_IFS_MISC_IGNORE_BACKOFF);
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+
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+ REG_WRITE(ah, AR_Q_TXD, 0);
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+}
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+EXPORT_SYMBOL(ath9k_hw_abort_tx_dma);
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+
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bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q)
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{
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#define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */
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--- a/drivers/net/wireless/ath/ath9k/mac.h
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+++ b/drivers/net/wireless/ath/ath9k/mac.h
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@@ -676,6 +676,7 @@ void ath9k_hw_cleartxdesc(struct ath_hw
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u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q);
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bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel);
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bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q);
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+void ath9k_hw_abort_tx_dma(struct ath_hw *ah);
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void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs);
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bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
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const struct ath9k_tx_queue_info *qinfo);
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