misc/88741: IPMI access disabled when bge driver is loaded

Stephen Cravey clists at gotbrains.org
Wed Nov 9 09:50:14 PST 2005

>Number:         88741
>Category:       misc
>Synopsis:       IPMI access disabled when bge driver is loaded
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Nov 09 17:50:13 GMT 2005
>Originator:     Stephen Cravey
>Release:        5.4-R
I believe that i386/79143 should be refiled under net at . No responses are coming from i386@

On a Supermicro P8SCI with the AOC-IPMI20-E IPMI card, the IPMI interface has its own mac address and IP through the broadcom 5721 port. When the bge driver loads, IPMI traffic no longer passes through the port. Reportedly, other OS's do not have this problem. I have tested against knoppix, dos, etc with no problems.

>From i386/79143:
Before LAN driver run up, IPMI connection is working great.  Once LAN
driver is up, IPMI no longer work.  When I bring down the LAN driver in
FreeBSD, the IPMI connection works again.
The NIC is Broadcom 5721.  It seems that LAN driver turn off pass-thru
feature of NIC.
5721 uses SMBus (I2C) to communicate with IPMI card.
I am using Supermicro P8SCI with their AOC-IPMI20-E IPMI card.
I install other OS, Redhat, Windows, all work fine for IPMI

install/configure ipmi card. Boot FreeBSD GENERIC.
Installing a network card with another driver and disabling the bge driver would probably do it.

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