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From: John Baldwin <jhb@freebsd.org>
To: Sean Bruno <seanbru@yahoo-inc.com>
Date: Mon, 2 Apr 2012 08:49:58 -0400
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	(bigwig.baldwin.cx); Mon, 02 Apr 2012 10:31:50 -0400 (EDT)
Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>
Subject: Re: [stable-ish 9] Dell R815 ipmi(4) attach failure
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On Friday, March 30, 2012 5:30:34 pm Sean Bruno wrote:
> 
> > This is the relevant bits:
> > 
> > Handle 0x2600, DMI type 38, 18 bytes
> > IPMI Device Information
> > 	Interface Type: KCS (Keyboard Control Style)
> > 	Specification Version: 2.0
> > 	I2C Slave Address: 0x10
> > 	NV Storage Device: Not Present
> > 	Base Address: 0x0000000000000CA8 (I/O)
> > 	Register Spacing: 32-bit Boundaries
> > 
> > Note the '32-bit' boundaries.  I think ACPI doesn't support that for its 
> > attachment (well, it does if they specify each port as a separate thing in 
> > _CRS).  Can you get acpidump -d output?
> > 
> 
> Aye, here ya go. 
> 
> http://people.freebsd.org/~sbruno/acpidump_r815.txt

Hmm, that actually looks correct.  Try sabotaging the ACPI attach just for 
testing (i.e. add a 'return (ENXIO)' to the top of the probe routine in 
ipmi_acpi.c) just to see if that makes a difference.  If not, then I think the 
BMC is just broken or your BIOS is lying.

-- 
John Baldwin