diff options
| -rw-r--r-- | drivers/net/igb/e1000_defines.h | 6 | ||||
| -rw-r--r-- | drivers/net/igb/e1000_hw.h | 1 | ||||
| -rw-r--r-- | drivers/net/igb/igb_ethtool.c | 1 | ||||
| -rw-r--r-- | drivers/net/igb/igb_main.c | 19 |
4 files changed, 24 insertions, 3 deletions
diff --git a/drivers/net/igb/e1000_defines.h b/drivers/net/igb/e1000_defines.h index 54a14892338..bff62dd8431 100644 --- a/drivers/net/igb/e1000_defines.h +++ b/drivers/net/igb/e1000_defines.h @@ -413,6 +413,7 @@ /* LAN connected device generates an interrupt */ #define E1000_ICR_PHYINT 0x00001000 #define E1000_ICR_EPRST 0x00100000 /* ME handware reset occurs */ +#define E1000_ICR_DOUTSYNC 0x10000000 /* NIC DMA out of sync */ /* Extended Interrupt Cause Read */ #define E1000_EICR_RX_QUEUE0 0x00000001 /* Rx Queue 0 Interrupt */ @@ -441,7 +442,8 @@ E1000_IMS_TXDW | \ E1000_IMS_RXDMT0 | \ E1000_IMS_RXSEQ | \ - E1000_IMS_LSC) + E1000_IMS_LSC | \ + E1000_IMS_DOUTSYNC) /* Interrupt Mask Set */ #define E1000_IMS_TXDW E1000_ICR_TXDW /* Transmit desc written back */ @@ -449,6 +451,7 @@ #define E1000_IMS_RXSEQ E1000_ICR_RXSEQ /* rx sequence error */ #define E1000_IMS_RXDMT0 E1000_ICR_RXDMT0 /* rx desc min. threshold */ #define E1000_IMS_RXT0 E1000_ICR_RXT0 /* rx timer intr */ +#define E1000_IMS_DOUTSYNC E1000_ICR_DOUTSYNC /* NIC DMA out of sync */ /* Extended Interrupt Mask Set */ #define E1000_EIMS_TCP_TIMER E1000_EICR_TCP_TIMER /* TCP Timer */ @@ -457,6 +460,7 @@ /* Interrupt Cause Set */ #define E1000_ICS_LSC E1000_ICR_LSC /* Link Status Change */ #define E1000_ICS_RXDMT0 E1000_ICR_RXDMT0 /* rx desc min. threshold */ +#define E1000_ICS_DOUTSYNC E1000_ICR_DOUTSYNC /* NIC DMA out of sync */ /* Extended Interrupt Cause Set */ diff --git a/drivers/net/igb/e1000_hw.h b/drivers/net/igb/e1000_hw.h index acb42a21e95..62ccd495356 100644 --- a/drivers/net/igb/e1000_hw.h +++ b/drivers/net/igb/e1000_hw.h @@ -359,6 +359,7 @@ struct e1000_hw_stats { u64 lenerrs; u64 scvpc; u64 hrmpc; + u64 doosync; }; struct e1000_phy_stats { diff --git a/drivers/net/igb/igb_ethtool.c b/drivers/net/igb/igb_ethtool.c index 33c23a117fe..de09430ce7f 100644 --- a/drivers/net/igb/igb_ethtool.c +++ b/drivers/net/igb/igb_ethtool.c @@ -88,6 +88,7 @@ static const struct igb_stats igb_gstrings_stats[] = { { "rx_long_byte_count", IGB_STAT(stats.gorc) }, { "rx_csum_offload_good", IGB_STAT(hw_csum_good) }, { "rx_csum_offload_errors", IGB_STAT(hw_csum_err) }, + { "tx_dma_out_of_sync", IGB_STAT(stats.doosync) }, { "alloc_rx_buff_failed", IGB_STAT(alloc_rx_buff_failed) }, { "tx_smbus", IGB_STAT(stats.mgptc) }, { "rx_smbus", IGB_STAT(stats.mgprc) }, diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 8c27e0a23df..c05ca3461f6 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -689,7 +689,7 @@ static void igb_irq_enable(struct igb_adapter *adapter) wr32(E1000_EIAC, adapter->eims_enable_mask); wr32(E1000_EIAM, adapter->eims_enable_mask); wr32(E1000_EIMS, adapter->eims_enable_mask); - wr32(E1000_IMS, E1000_IMS_LSC); + wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC); } else { wr32(E1000_IMS, IMS_ENABLE_MASK); wr32(E1000_IAM, IMS_ENABLE_MASK); @@ -3287,6 +3287,11 @@ static irqreturn_t igb_msix_other(int irq, void *data) u32 icr = rd32(E1000_ICR); /* reading ICR causes bit 31 of EICR to be cleared */ + + if(icr & E1000_ICR_DOUTSYNC) { + /* HW is reporting DMA is out of sync */ + adapter->stats.doosync++; + } if (!(icr & E1000_ICR_LSC)) goto no_link_interrupt; hw->mac.get_link_status = 1; @@ -3295,7 +3300,7 @@ static irqreturn_t igb_msix_other(int irq, void *data) mod_timer(&adapter->watchdog_timer, jiffies + 1); no_link_interrupt: - wr32(E1000_IMS, E1000_IMS_LSC); + wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC); wr32(E1000_EIMS, adapter->eims_other); return IRQ_HANDLED; @@ -3499,6 +3504,11 @@ static irqreturn_t igb_intr_msi(int irq, void *data) igb_write_itr(adapter->rx_ring); + if(icr & E1000_ICR_DOUTSYNC) { + /* HW is reporting DMA is out of sync */ + adapter->stats.doosync++; + } + if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { hw->mac.get_link_status = 1; if (!test_bit(__IGB_DOWN, &adapter->state)) @@ -3534,6 +3544,11 @@ static irqreturn_t igb_intr(int irq, void *data) if (!(icr & E1000_ICR_INT_ASSERTED)) return IRQ_NONE; + if(icr & E1000_ICR_DOUTSYNC) { + /* HW is reporting DMA is out of sync */ + adapter->stats.doosync++; + } + eicr = rd32(E1000_EICR); if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |