*BSD News Article 82704


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From: duane@amd40.wecs.org (Duane Eddingfield)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: PCI support?
Date: 11 Nov 1996 21:49:31 GMT
Organization: A FreeBSD box.
Lines: 39
Message-ID: <56871b$7rm@amd40.wecs.org>
References: <32867B2A.2781E494@cube.nanoteq.co.za>
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To: Roelof W Temmingh <roelof@cube.nanoteq.co.za>

In article <32867B2A.2781E494@cube.nanoteq.co.za>,
	Roelof W Temmingh <roelof@cube.nanoteq.co.za> writes:
> I have recently upgraded my system from a 486DX100 to a Pentium 120.
> I am using a P/I - P55TVP4 motherboard. This mother board has 4 PCI
> slots and 3 ISA slots. It has an onboard PCI IDE controller, and also
> onboard support for 2 serial ports and 1 printer port.I am using a S3
> Trio64 video card.
> 
> At this moment everything is running fine. I have just one question:
> When I upgraded the system I thought I had to recompile the kernel and
> add PCI controller support:
> (controller      pci0)
> I used the GENREIC kernel first - and it worked. I tried my old kernel,
> without PCI support, and it worked as well...It seems that the kernel
> detects the PCI IDE controller on the ISA bus. I had a look in the
> manual, and it said something about mapping the PCI device on the ISA
> bus. Like I said everything is working fine with this "mapping" - I only
> wonder if there is a performance downside to this? It feels to me as if
> this mapping isnt using the PCI bus - is it? BTW, is this a silly
> question?
> 
   If this is a silly question, then that makes two of us :-)

   My system is very similar with EIDE controller reported by the 
kernel on bootup, but then it says '[no driver assigned]. I was
looking for a way to say 'controller wd0 at pci?' but this leaves
two unresolved in linking the kernel.

   I can set flags to turn on 32-bit access and PIO mode 4 which
really speeds up disk access and yet even though the kernel reports
the IDE adapter on the PCI bus it does not assign a drver to it.
I think in my case its just that I don't have the right syntax in
the kernel config.

   I someone who understands how to do this, there's two people
for sure that would appreciate it.
-- 
Duane Eddingfield
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