On Tue, 2007-12-11 at 17:49 +0800, Li Yang wrote:
> > -----Original Message-----
> > From: Joakim Tjernlund [mailto:[EMAIL PROTECTED]
> > Sent: Tuesday, December 11, 2007 2:46 AM
> > To: Li Yang-r58472 <[EMAIL PROTECTED]> Netdev
> > Cc: Joakim Tjernlund
> > Subject: [PATCH] Increase virtual FIFOs in ucc_geth.
> >
> > Increase UCC_GETH_URFS_INIT to 1152 and
> > UCC_GETH_UTFS_INIT to 896 to avoid HW Overrun/Underrun.
>
> Please be noted that these values are only used for 10/100Mbps speed.
> Did you get Overrun in 10/100M mode?
I get both TX Underrun and RX overrun in 100Mbps, FD, just
by running a tftp transfer. It feels like the URFET and/or URSFET
isn't working. Why I don't know. CPU is MPC832x
Jocke
>
> - Leo
>
> >
> > Signed-off-by: Joakim Tjernlund <[EMAIL PROTECTED]>
> > ---
> > drivers/net/ucc_geth.h | 4 ++--
> > 1 files changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/net/ucc_geth.h b/drivers/net/ucc_geth.h
> > index bb4dac8..d3f030b 100644
> > --- a/drivers/net/ucc_geth.h
> > +++ b/drivers/net/ucc_geth.h
> > @@ -923,11 +923,11 @@ struct ucc_geth_hardware_statistics {
> > #define PHY_CHANGE_TIME 2
> >
> > /* Fast Ethernet (10/100 Mbps) */
> > -#define UCC_GETH_URFS_INIT 512 /* Rx
> > virtual FIFO size
> > +#define UCC_GETH_URFS_INIT 1152 /* Rx
> > virtual FIFO size
> > */
> > #define UCC_GETH_URFET_INIT 256 /* 1/2 urfs */
> > #define UCC_GETH_URFSET_INIT 384 /* 3/4 urfs */
> > -#define UCC_GETH_UTFS_INIT 512 /* Tx
> > virtual FIFO size
> > +#define UCC_GETH_UTFS_INIT 896 /* Tx
> > virtual FIFO size
> > */
> > #define UCC_GETH_UTFET_INIT 256 /* 1/2 utfs */
> > #define UCC_GETH_UTFTT_INIT 128
> > --
> > 1.5.3.6
> >
> >
>
>
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