i386/79143: Broadcom NIC driver do not work for IPMI

[De Carli]

>Number:         79143
>Category:       i386
>Synopsis:       Broadcom NIC driver do not work for IPMI
>Confidential:   no
>Severity:       non-critical
>Priority:       high
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Mar 22 20:10:02 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     De Carli
>Release:        5.3
>Organization:
>Environment:
>Description:
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.
>How-To-Repeat:
I am using Supermicro P8SCI with their AOC-IPMI20-E IPMI card.
I install other OS, Redhat, Windows, all work fine for IPMI.
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: