Some versions of the spider have a firmware bug, where the
RX ring sequencer goes crazy when the RX RAM on the device
fills up. Appearently the only viable wrkaround is a soft
reset of the card.
Signed-off-by: Linas Vepstas <[EMAIL PROTECTED]>
----
drivers/net/spider_net.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
Index: netdev-2.6/drivers/net/spider_net.c
===================================================================
--- netdev-2.6.orig/drivers/net/spider_net.c 2007-05-22 18:03:37.000000000
-0500
+++ netdev-2.6/drivers/net/spider_net.c 2007-05-22 18:03:39.000000000 -0500
@@ -1506,11 +1506,17 @@ spider_net_handle_error_irq(struct spide
case SPIDER_NET_GRFBFLLINT: /* fallthrough */
case SPIDER_NET_GRFAFLLINT: /* fallthrough */
case SPIDER_NET_GRMFLLINT:
- if (netif_msg_intr(card) && net_ratelimit())
- pr_err("%s: Spider RX RAM full, incoming packets "
- "might be discarded!\n", card->netdev->name);
+ if (netif_msg_intr(card) && net_ratelimit()) {
+ pr_err("%s: Spider RX RAM full, reseting device.\n",
+ card->netdev->name);
+ show_rx_chain(card);
+ }
spider_net_rx_irq_off(card);
netif_rx_schedule(card->netdev);
+
+ /* If the card is spewing rxramfulls, then reset */
+ atomic_inc(&card->tx_timeout_task_counter);
+ schedule_work(&card->tx_timeout_task);
show_error = 0;
break;
@@ -2087,6 +2093,8 @@ spider_net_workaround_rxramfull(struct s
{
int i, sequencer = 0;
+ printk(KERN_INFO "%s: calling rxramfull workaround\n",
card->netdev->name);
+
/* cancel reset */
spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
SPIDER_NET_CKRCTRL_RUN_VALUE);
-
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