Commit d8e95e52 authored by James Cameron's avatar James Cameron Committed by Stephen Hemminger

sis900: phy for FoxCon motherboard

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>
parent 4c1b4622
......@@ -127,6 +127,7 @@ static const struct mii_chip_info {
} mii_chip_table[] = {
{ "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
{ "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
{ "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
{ "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
{ "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
{ "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
......
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