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mt7603: improve recovery from PSE reset failure

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Only clear reset status and switch to DMA reset after 3 tries.

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2018-12-05 15:31:43 +01:00
parent da00af00c5
commit 417ab779a0
1 changed files with 9 additions and 2 deletions
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mt7603/mac.c
+9 -2
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@@ -1197,20 +1197,27 @@ wait_for_wpdma(struct mt7603_dev *dev)
static void mt7603_pse_reset(struct mt7603_dev *dev)
{
/* Clear previous reset result */
if (!dev->reset_cause[RESET_CAUSE_RESET_FAILED])
mt76_clear(dev, MT_MCU_DEBUG_RESET, MT_MCU_DEBUG_RESET_PSE_S);
/* Reset PSE */
mt76_clear(dev, MT_MCU_DEBUG_RESET, MT_MCU_DEBUG_RESET_PSE_S);
mt76_set(dev, MT_MCU_DEBUG_RESET, MT_MCU_DEBUG_RESET_PSE);
if (!mt76_poll_msec(dev, MT_MCU_DEBUG_RESET,
MT_MCU_DEBUG_RESET_PSE_S,
MT_MCU_DEBUG_RESET_PSE_S, 500)) {
mt76_clear(dev, MT_MCU_DEBUG_RESET, MT_MCU_DEBUG_RESET_PSE);
dev->reset_cause[RESET_CAUSE_RESET_FAILED]++;
} else {
dev->reset_cause[RESET_CAUSE_RESET_FAILED] = 0;
}
mt76_clear(dev, MT_MCU_DEBUG_RESET, MT_MCU_DEBUG_RESET_QUEUES);
if (dev->reset_cause[RESET_CAUSE_RESET_FAILED] >= 3) {
dev->reset_cause[RESET_CAUSE_RESET_FAILED] = 0;
mt76_clear(dev, MT_MCU_DEBUG_RESET, MT_MCU_DEBUG_RESET_PSE);
}
}
void mt7603_mac_dma_start(struct mt7603_dev *dev)