Hi,
To start with, i'm not sure if this should go to the dev or user list,
but i'll start here..
I'm currently running a nfsroot via a Broadcom NetXtreme 1000-SX card
(BCM5701) and i have a big problem with the tg3 drivers autonegotiation.
The issue seems to be that when the kernel comes so far as it's trying
to mount the boot the autonegotiation has not yet completed and then
causes a panic since it cannot mount the nfsroot.
From some debugging i have done here the issues seems to be related to
the flowcontrol configuration, and just to make it a bit more fun it
does work some of the time.. (around once every 5-10 attempts.)
On the console it looks something like this when failing. (written from
memory since i don't have netconsole enabled)
tg3: eth0: Link is up at 1000 Mbps, full duplex.
tg3: eth0: Flow control is off for TX and off for RX.
IP-Config: Complete:
device=eth0, addr=192.168.1.10, mask=255.255.255.0,
gw=255.255.255.255,
host=amd, domain=, nis-domain=(none),
bootserver=255.255.255.255, rootserver=192.168.1.1, rootpath=
Root-NFS: unknown option: nolocks
Looking up port of RPC 100003/3 on 192.168.1.1
rpcbind: server 192.168.1.1 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100003/3 on 192.168.1.1
rpcbind: server 192.168.1.1 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
and so on until it panics...
And for a successful attempt:
tg3: eth0: Link is up at 1000 Mbps, full duplex.
tg3: eth0: Flow control is off for TX and off for RX.
IP-Config: Complete:
device=eth0, addr=192.168.1.10, mask=255.255.255.0,
gw=255.255.255.255,
host=amd, domain=, nis-domain=(none),
bootserver=255.255.255.255, rootserver=192.168.1.1, rootpath=
Root-NFS: unknown option: nolocks
Looking up port of RPC 100003/3 on 192.168.1.1
tg3: eth0: Link is up at 1000 Mbps, full duplex.
tg3: eth0: Flow control is on for TX and on for RX.
rpcbind: server 192.168.1.1 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/3 on 192.168.1.1
VFS: Mounted root (nfs filesystem).
Also, if i get the "flowcontrol is on" before it tries to mount the
root it does not report any issues. And this is also not unique to NFS
booting, but anytime i bring the link up (when not using it for booting).
Currently i'm running 2.6.22-git9 (for testing) and i experience the
same issues in plain 2.6.22 and before.
Regards,
Patric
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