From a8d9553d8fc4db9c12022451ca1d2368e796c591 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 28 Jul 2023 16:04:40 +0200 Subject: [PATCH] wifi: mt76: mt7603: improve watchdog reset reliablity Only trigger PSE reset if PSE was stuck, otherwise it can cause DMA issues. Trigger the PSE reset while DMA is fully stopped in order to improve reliabilty. Fixes: c8846e101502 ("mt76: add driver for MT7603E and MT7628/7688") Signed-off-by: Felix Fietkau --- mt7603/mac.c | 29 ++++++++++++----------------- 1 file changed, 12 insertions(+), 17 deletions(-) diff --git a/mt7603/mac.c b/mt7603/mac.c index 7a506a0c..cf21d062 100644 --- a/mt7603/mac.c +++ b/mt7603/mac.c @@ -1441,15 +1441,6 @@ static void mt7603_mac_watchdog_reset(struct mt7603_dev *dev) mt7603_beacon_set_timer(dev, -1, 0); - if (dev->reset_cause[RESET_CAUSE_RESET_FAILED] || - dev->cur_reset_cause == RESET_CAUSE_RX_PSE_BUSY || - dev->cur_reset_cause == RESET_CAUSE_BEACON_STUCK || - dev->cur_reset_cause == RESET_CAUSE_TX_HANG) - mt7603_pse_reset(dev); - - if (dev->reset_cause[RESET_CAUSE_RESET_FAILED]) - goto skip_dma_reset; - mt7603_mac_stop(dev); mt76_clear(dev, MT_WPDMA_GLO_CFG, @@ -1459,28 +1450,32 @@ static void mt7603_mac_watchdog_reset(struct mt7603_dev *dev) mt7603_irq_disable(dev, mask); - mt76_set(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_FORCE_TX_EOF); - mt7603_pse_client_reset(dev); mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_WM], true); for (i = 0; i < __MT_TXQ_MAX; i++) mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], true); + mt7603_dma_sched_reset(dev); + + mt76_tx_status_check(&dev->mt76, true); + mt76_for_each_q_rx(&dev->mt76, i) { mt76_queue_rx_reset(dev, i); } - mt76_tx_status_check(&dev->mt76, true); + if (dev->reset_cause[RESET_CAUSE_RESET_FAILED] || + dev->cur_reset_cause == RESET_CAUSE_RX_PSE_BUSY) + mt7603_pse_reset(dev); - mt7603_dma_sched_reset(dev); + if (!dev->reset_cause[RESET_CAUSE_RESET_FAILED]) { + mt7603_mac_dma_start(dev); - mt7603_mac_dma_start(dev); + mt7603_irq_enable(dev, mask); - mt7603_irq_enable(dev, mask); + clear_bit(MT76_RESET, &dev->mphy.state); + } -skip_dma_reset: - clear_bit(MT76_RESET, &dev->mphy.state); mutex_unlock(&dev->mt76.mutex); mt76_worker_enable(&dev->mt76.tx_worker);