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From: Walter Hurry <walterhurry@gmail.com>
Subject: Re: Kernel Modules Documentation?
Date: Wed, 1 May 2013 19:14:10 +0000 (UTC)
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On Tue, 30 Apr 2013 10:07:13 -0400, illoai@gmail.com wrote:

> On 30 April 2013 09:39, Walter Hurry <walterhurry@gmail.com> wrote:
> 
>> FreeBSD 9.1 on amd64.
>>
>> I have a list of about 220 kernel modules and would like to find out
>> what they do, or are for (none has a man page). I suspect that many of
>> them are drivers for particular devices.
>>
>> Is there any resource or documentation available?
>>
>> Thanks.
>>
>> P.S. Here are the first few:
>> ahc_eisa ahc_isa ahc_pci alias_cuseeme
>>
>>
> Yes, the modules names aren't always exactly the man page name. 
> Stubborn & inventive use of apropos & locate (& reading through stuff in
> /usr/src/sys/modules/ ) can help, but not everything is obvious.
> 
> ahc(4) covers the first few.
> 
> libalias(3) appears to be the only thing to even parenthetically
> mentions cuseeme (NB I didn't run grep over the whole dang filesystem,
> though).
> 
> Most of the if_something are under something(4).
> 
> For the geom_blahblah, see if it's covered by something mentioned in the
> SEE ALSO sexion of geom(8) or geom(4).

Thanks to all for the pointers. With a little digging around, I have 
managed to reduce the 220 to zero, and now have all 643 (9.1 on amd64) 
briefly documented.