Date: Sat, 30 Jul 2011 16:55:52 -0700 From: Doug Barton <dougb@FreeBSD.org> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-current@freebsd.org, Andriy Gapon <avg@freebsd.org> Subject: Re: ichwd0: unable to reserve GCS registers Message-ID: <4E349A08.50801@FreeBSD.org> In-Reply-To: <201107300834.29194.jhb@freebsd.org> References: <4E23EE49.5040801@FreeBSD.org> <201107191116.07116.jhb@freebsd.org> <4E33A990.7040006@FreeBSD.org> <201107300834.29194.jhb@freebsd.org>
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On 07/30/2011 05:34, John Baldwin wrote: > On Saturday, July 30, 2011 02:49:52 AM Andriy Gapon wrote: >> on 19/07/2011 18:16 John Baldwin said the following: >>> Hmm, can you get devinfo -r output from a working kernel with ichwd >>> loaded? You might be able to just build the kernel with 'nooptions >>> NEW_PCIB'. So is this still relevant? I'm sorry I haven't had a chance to get this done, but I may be able to this weekend if you still think it's useful. Doug >> I believe that I've got a similar problem with amdsbwd(4). >> It needs some resources (I/O ports) that belong to ACPI. >> The problem is that the driver attaches to isa bus which is under >> isab->pci->pcib and those particular resources are not assigned to the >> Host-PCI bridge. >> >> I think that you already made a suggestion that perhaps isa bus should >> directly attach to acpi bus when acpi is available. Not sure if there are >> any alternative approaches. > > Actually, my suggestion was the other way around (we should move certain ACPI > devices down behind isab so they are behind the Host-PCI bridge as they are in > hardware). In this case the BIOS clearly does not list the reosurces for the > GCS as valid resources for the Host-PCI bridge. This is part of the reason > that I added the 'debug.acpi.disable="hostres"'. One thing we may be able to > do is allow non-wildcard requests that are outside the range to still pass if > they are in ACPI's system resource range perhaps. > -- Nothin' ever doesn't change, but nothin' changes much. -- OK Go Breadth of IT experience, and depth of knowledge in the DNS. Yours for the right price. :) http://SupersetSolutions.com/
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