ichwd0: unable to reserve GCS registers

Test Rat ttsestt at gmail.com
Wed Aug 3 08:49:35 UTC 2011

Doug Barton <dougb at FreeBSD.org> writes:

> On 08/02/2011 15:06, John Baldwin wrote:
>> On Saturday, July 30, 2011 2:49:52 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'.
>>> 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.
>> Can you try this:
> Not so much. :) the first and last patches I can apply to HEAD by hand,
> but /sys/dev/acpica/acpi_pcib_acpi.c is only 387 lines long, so I'm not
> even sure where to start.

  $ svn cat svn://svn.freebsd.org/base/head/sys/dev/acpica/acpi_pcib_acpi.c | wc -l

No difference here on ICH9, ichwd(4) still doesn't attach.

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