Andrew Morton wrote:
> That's a transmit underrun - data is not being fed into the NIC
> across the PCI bus fast enough. Possibly something has gone
> wrong with the busmastering logic on the mainboard, or the NIC.
>
> The driver will reset the transmitter when this happens, as per the
> manual. There's not much else we can do.
pci-skeleton.c and several of Don's drivers actually do do something
else on TxUnderrun, twiddle DMA burst settings:
if ((intr_status & TxUnderrun)
&& (np->tx_config & TxThresholdField) !=
TxThresholdField) {
long ioaddr = dev->base_addr;
np->tx_config += TxThresholdInc;
writel(np->tx_config, ioaddr + TxMode);
np->stats.tx_fifo_errors++;
}
I wonder how feasible it is to do that on 3c59x hardware?
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This archive was generated by hypermail 2b29 : Sat Dec 07 2002 - 22:00:31 EST