diff options
| author | Felix Fietkau <nbd@nbd.name> | 2022-01-31 13:35:34 +0300 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2022-02-03 16:34:35 +0300 |
| commit | 2aa6c0fb755710a32f30b12dc9bec52929b8b988 (patch) | |
| tree | b3f1ef3fe5de3b8b6b85c156b4582bafc8eec518 /drivers/net/wireless/mediatek | |
| parent | e22814bb275c5b35974edd9135a898941f77b62f (diff) | |
| download | linux-2aa6c0fb755710a32f30b12dc9bec52929b8b988.tar.xz | |
mt76x02: improve mac error check/reset reliability
On AP mode devices, check beacon tx counters to detect MAC errors.
When an error is detected, stop the MAC before resetting it
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x02.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x02_mac.c | 25 | ||||
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x02_regs.h | 2 |
3 files changed, 22 insertions, 6 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02.h b/drivers/net/wireless/mediatek/mt76/mt76x02.h index 44d1a92d9a90..3232083e9916 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02.h +++ b/drivers/net/wireless/mediatek/mt76/mt76x02.h @@ -104,6 +104,7 @@ struct mt76x02_dev { u32 tx_hang_reset; u8 tx_hang_check; + u8 beacon_hang_check; u8 mcu_timeout; struct mt76x02_calibration cal; diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c index a404fd7ea968..dc2aeaab72ec 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c @@ -1040,12 +1040,26 @@ EXPORT_SYMBOL_GPL(mt76x02_update_channel); static void mt76x02_check_mac_err(struct mt76x02_dev *dev) { - u32 val = mt76_rr(dev, 0x10f4); + if (dev->mt76.beacon_mask) { + if (mt76_rr(dev, MT_TX_STA_0) & MT_TX_STA_0_BEACONS) { + dev->beacon_hang_check = 0; + return; + } - if (!(val & BIT(29)) || !(val & (BIT(7) | BIT(5)))) - return; + if (++dev->beacon_hang_check < 10) + return; + + dev->beacon_hang_check = 0; + } else { + u32 val = mt76_rr(dev, 0x10f4); + if (!(val & BIT(29)) || !(val & (BIT(7) | BIT(5)))) + return; + } + + dev_err(dev->mt76.dev, "MAC error detected\n"); - dev_err(dev->mt76.dev, "mac specific condition occurred\n"); + mt76_wr(dev, MT_MAC_SYS_CTRL, 0); + mt76x02_wait_for_txrx_idle(&dev->mt76); mt76_set(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_RESET_CSR); udelay(10); @@ -1178,8 +1192,7 @@ void mt76x02_mac_work(struct work_struct *work) dev->mt76.aggr_stats[idx++] += val >> 16; } - if (!dev->mt76.beacon_mask) - mt76x02_check_mac_err(dev); + mt76x02_check_mac_err(dev); if (dev->ed_monitor) mt76x02_edcca_check(dev); diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_regs.h b/drivers/net/wireless/mediatek/mt76/mt76x02_regs.h index fa7872ac22bf..fe0c5e3298bc 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_regs.h +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_regs.h @@ -571,6 +571,8 @@ #define MT_RX_STAT_2_OVERFLOW_ERRORS GENMASK(31, 16) #define MT_TX_STA_0 0x170c +#define MT_TX_STA_0_BEACONS GENMASK(31, 16) + #define MT_TX_STA_1 0x1710 #define MT_TX_STA_2 0x1714 |