FBSD 6.2-PRE/AMD64: two times SMBUS on ASUS A8N32-SLI?

[Ruslan Ermilov]

On Thu, Sep 21, 2006 at 09:52:31PM +0200, O. Hartmann wrote:
> Running FreeBSD 6.2-PRE/AMD64 on an ASUS A8N32-SLI shows up two smbus- 
> interfaces as you can see in the short dmesg-excerpt. In kernel config 
> there is only nfsmb mentioned, so I do not expect more than one smb-bus 
> on that kind of motherboard.
> Can anyone explain this odd behaviour?
> 
NVIDIA nForce chips implement two SMBus controllers, master
and slave.

> Temperature- and fanspeed monitoring is still not possible, neither 
> through ACPI, nor mbmon utility found in ports.
> 
Either because they don't have temperature sensors attached
to SMBus, or most likely these sensor chips are not known
to mbmon.  mbmon is not actively developed nowadays.  The
lm-sensors project should be considered for adoptation if
you want to add support for newer sensor/SMBus chips.

> nfsmb0: <nForce2/3/4 MCP SMBus Controller> port 
> 0xcc00-0xcc1f,0x600-0x63f,0x700-0x73f irq 20 at device 10.1 on pci 0
> smbus0: <System Management Bus> on nfsmb0
> smb0: <SMBus generic I/O> on smbus0
> nfsmb1: <nForce2/3/4 MCP SMBus Controller> on nfsmb0
  ^^^^^^                                     ^^^^^^^^^
> smbus1: <System Management Bus> on nfsmb1
> smb1: <SMBus generic I/O> on smbus1


Cheers,
-- 
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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