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SubjectRe: sky2 panic in 2.6.32.1 under load (new oops)
The error is coming from sky2_err_intr, not sky2_hw_intr:

sky2 0000:06:00.0: error interrupt status=0x40000008
sky2 0000:06:00.0: error interrupt status=0x8

Also, fwiw, when running with vt-d disabled, I don't get the
dhcpinform/ack messages, but continue to get the interrupt status
messages. That said, I am not certain the the dhcpinform/ack is related
at to the sky2 issue.
On 12/29/2009 2:49 PM, Stephen Hemminger wrote:
> This patch will dump more info in case of hardware error.
>
> --- a/drivers/net/sky2.c 2009-12-29 11:30:06.441137685 -0800
> +++ b/drivers/net/sky2.c 2009-12-29 11:46:37.389262922 -0800
> @@ -2629,12 +2625,71 @@ static void sky2_hw_error(struct sky2_hw
> }
> }
>
> +static void dump_txring(struct sky2_hw *hw, unsigned port)
> +{
> + struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
> + int sop = 1;
> + unsigned idx;
> +
> + printk(KERN_INFO PFX "Tx ring pending=%u...%u report=%d done=%d\n",
> + sky2->tx_cons, sky2->tx_prod,
> + sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
> + sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
> +
> + /* Dump contents of tx ring */
> + for (idx = sky2->tx_next;
> + idx != sky2->tx_prod&& idx< sky2->tx_ring_size;
> + idx = RING_NEXT(idx, sky2->tx_ring_size)) {
> + const struct sky2_tx_le *le = sky2->tx_le + idx;
> + u32 a = le32_to_cpu(le->addr);
> +
> + if (sop)
> + printk(KERN_DEBUG "%u:", idx);
> + sop = 0;
> +
> + switch(le->opcode& ~HW_OWNER) {
> + case OP_ADDR64:
> + printk(" %#x:", a);
> + break;
> + case OP_LRGLEN:
> + printk(" mtu=%d", a);
> + break;
> + case OP_VLAN:
> + printk(" vlan=%d", be16_to_cpu(le->length));
> + break;
> + case OP_TCPLISW:
> + printk(" csum=%#x", a);
> + break;
> + case OP_LARGESEND:
> + printk(" tso=%#x(%d)", a, le16_to_cpu(le->length));
> + break;
> + case OP_PACKET:
> + printk(" %#x(%d)", a, le16_to_cpu(le->length));
> + break;
> + case OP_BUFFER:
> + printk(" frag=%#x(%d)", a, le16_to_cpu(le->length));
> + break;
> + default:
> + printk(" op=%#x,%#x(%d)", le->opcode, a,
> + le16_to_cpu(le->length));
> + }
> +
> + if (le->ctrl& EOP) {
> + printk("\n");
> + sop = 1;
> + }
> + }
> +}
> +
> static void sky2_hw_intr(struct sky2_hw *hw)
> {
> struct pci_dev *pdev = hw->pdev;
> u32 status = sky2_read32(hw, B0_HWE_ISRC);
> u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
>
> + printk(KERN_DEBUG PFX "hardware interrupt status %#x\n", status);
> + dump_txring(hw, 0);
> +
> status&= hwmsk;
>
> if (status& Y2_IS_TIST_OV)
>
>



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