bce(4) with IPMI

[David Christensen]

> Ran this on my Dell R410.  I can clearly see that the tool is
> "disabling" the MFW bit, and that the dell bios interface to the IPMI
> controller/DRAC is impaired, however ...
> 
> The system still thinks that the MFW bit is "ON" and proceeds normally
> in this case.  The code still fails to detect that MFW is disabled.
> 
> In addition, the IPMI driver attaches to "something" and I can poke at
> it via ipmitool.  So, from the driver perspective, the attempt to detect
> MFW enabled doesn't work as the chipset still thinks that its "on".
> 
> I've commented out the code block that we're trying to work around in
> the yahoo code base for now.

I have an R210 and running the uxdiag command definitely disabled 
management firmware on my system:

===[root] ~ # dmesg | grep bce
bce0: <Broadcom NetXtreme II BCM5716 1000Base-T (C0)> mem 0xda000000-0xdbffffff irq 16 at device 0.0 on pci2
miibus0: <MII bus> on bce0
bce0: Ethernet address: b8:ac:6f:87:95:f1
bce0: ASIC (0x57092008); Rev (C0); Bus (PCIe x4, 2.5Gbps); B/C (5.2.2); Bufs (RX:2;TX:2;PG:8); Flags (SPLT|MSI)
bce1: <Broadcom NetXtreme II BCM5716 1000Base-T (C0)> mem 0xdc000000-0xddffffff irq 17 at device 0.1 on pci2
miibus1: <MII bus> on bce1
bce1: Ethernet address: b8:ac:6f:87:95:f2
bce1: ASIC (0x57092008); Rev (C0); Bus (PCIe x4, 2.5Gbps); B/C (5.2.2); Bufs (RX:2;TX:2;PG:8); Flags (SPLT|MSI)
bce0: Gigabit link up!
bce0: Gigabit link up!
bce1: Gigabit link up!
bce1: Gigabit link up!
===[root] ~ #

Dave