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| author |   Alexander Duyck <alexander.h.duyck@intel.com> | 2009-02-06 23:19:08 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-02-07 02:43:08 -0800 |
| commit | dda0e0834c839c0e4b1717cbe9c22c35ca935809 (patch) | |
| tree | 55be9a788e8b9815fe4fb40871cda0883c596431 /drivers/net/igb/igb_main.c | |
| parent | igb: update testing done by ethtool (diff) | |
| download | linux-dev-dda0e0834c839c0e4b1717cbe9c22c35ca935809.tar.xz linux-dev-dda0e0834c839c0e4b1717cbe9c22c35ca935809.zip | |
igb: add counter for dma out of sync errors
Add a counter for dma out of sync errors reported via interrupt.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/igb/igb_main.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 8c27e0a23dff..c05ca3461f60 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)) { |