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SubjectRe: via-rhine timeouts
Urban Widmark wrote:
>
> writeb(readb(ioaddr + TxConfig) | 0x80, ioaddr + TxConfig);
> np->tx_thresh = 0x20;
> (linuxfet.c)
>
> writeb(0x20, ioaddr + TxConfig);
> np->tx_thresh = 0x20;
> (via-rhine.c)
>
> Note how the linuxfet driver sets a higher value but does not make the
> tx_thresh follow, so if it later gets a "IntrTxUnderrun" it will lower the
> threshold. But the chosen value is probably large enough.
>
> Those of you with this problem could try changing the 0x80 to 0x20 in the
> linuxfet.c driver and see if the problem returns (or the other way around
> in the via-rhine.c driver).
>

That would certainly explain why people are seeing success
with linuxfet.

Here's the test patch which you describe. It would be
useful if people could try it..

--- linux-2.4.18-pre6/drivers/net/via-rhine.c Tue Jan 22 12:38:30 2002
+++ linux-akpm/drivers/net/via-rhine.c Wed Jan 23 12:42:18 2002
@@ -965,7 +965,7 @@ static void init_registers(struct net_de
/* Initialize other registers. */
writew(0x0006, ioaddr + PCIBusConfig); /* Tune configuration??? */
/* Configure the FIFO thresholds. */
- writeb(0x20, ioaddr + TxConfig); /* Initial threshold 32 bytes */
+ writeb(0x80, ioaddr + TxConfig); /* Initial threshold 32 bytes */
np->tx_thresh = 0x20;
np->rx_thresh = 0x60; /* Written in via_rhine_set_rx_mode(). */

-
-
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