• James Cameron's avatar
    sis900: phy for FoxCon motherboard · d8e95e52
    James Cameron authored
    661FX7MI-S motherboard which uses the SiS 661FX chipset.  The patch adds
    an entry to mii_chip_info for the transceiver.
    
    The PHY ids were found using the sis900_c_122.diff patch from
    http://brownhat.org/sis900.html but that patch didn't solve the problem,
    because the PHY at address 1 was already being chosen.
    
    Without my patch, when bursts of packets arrive from other hosts on a
    LAN, the interface dropped one roughly 10% of the time, causing
    retransmits.  There were fifth second pauses in refresh of large xterms,
    and it made Netrek suck.  I can provide further test data.
    
    Workaround in lieu of patch is to use mii-tool to advertise
    100baseTx-HD, then force renegotiation.
    
    I wasn't able to identify the actual transceiver, so the description
    field is a guess.
    
    This patch is similar to Artur Skawina's patch:
    http://marc.theaimsgroup.com/?l=linux-netdev&m=114297516729079&w=2
    
    I'm not sure, but I wonder if it means the default behaviour should be
    changed, so as to better handle future transceivers.
    
    Diff is against 2.6.16.13.
    Signed-off-by: default avatarJames Cameron <james.cameron@hp.com>
    Signed-off-by: default avatarStephen Hemminger <shemminger@osdl.org>
    d8e95e52
sis900.c 72.4 KB