aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--drivers/net/igb/e1000_defines.h6
-rw-r--r--drivers/net/igb/e1000_hw.h1
-rw-r--r--drivers/net/igb/igb_ethtool.c1
-rw-r--r--drivers/net/igb/igb_main.c19
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)) {