ichwd0: unable to reserve GCS registers

Doug Barton dougb at FreeBSD.org
Sun Jan 29 01:06:31 UTC 2012

On 01/28/2012 01:41, Andriy Gapon wrote:
> on 28/01/2012 11:37 Doug Barton said the following:
>> On 01/28/2012 01:21, Andriy Gapon wrote:
>>> on 28/01/2012 11:13 Doug Barton said the following:
>>>> On 01/27/2012 10:21, John Baldwin wrote:
>>>>> Does it operate fully with NEW_PCIB disabled entirely, or do you get this
>>>>> same message in that case?
>>>> I put nooptions NEW_PCIB in my kernel config, and got basically the same:
>>>> isab0: found ICH10 or equivalent chipset: Intel ICH10DO watchdog timer
>>>> ichwd0: <Intel ICH10DO watchdog timer> on isa0
>>>> isab0: found ICH10 or equivalent chipset: Intel ICH10DO watchdog timer
>>>> ichwd0: ICH WDT present but disabled in BIOS or hardware
>>>> device_attach: ichwd0 attach returned 6
>>> The next logical question is has ichwd ever worked on this system?  With any
>>> version of FreeBSD. 
>> I have a vague recollection that it did, but I just tried 8.1-RELEASE on
>> the same system and got the same message about it being disabled.
> Then I'd guess that it has never actually worked (with FreeBSD).

It's possible, sure. What I find interesting is that the message I'm
seeing on -current is different after John's recent commit. OTOH I'm now
seeing the same message on 8 as I am on -current, so you're probably right.

>> OTOH,
>> on my laptop I know that it used to work, and then it didn't.
> But that's a different system and, as such, a different problem?
> Have you fixed it or debugged it in a similar fashion to this !laptop system?

I did in the past, yes. But I haven't had a chance to do that since
John's latest commit. I'll do that when I can.



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