On Tue, Apr 27, 2010 at 5:25 PM, John Baldwin <j...@freebsd.org> wrote:
> On Tuesday 27 April 2010 5:06:37 pm Maxim Sobolev wrote:
>> John Baldwin wrote:
>> > On Tuesday 27 April 2010 4:26:09 pm Maxim Sobolev wrote:
>> >> John Baldwin wrote:
>> >>> Hmm, I think you should definitely commit the atkbdc_isa.c change first 
>> >>> of
>> >>> all.  I'm still thinking about the other change.  I wonder if we can 
>> >>> figure
>> >>> out that a keyboard isn't present sooner somehow?  Do you know if the 
>> >>> keyboard
>> >>> appears to be present but just slow vs if the keyboard is eventually 
>> >>> found to
>> >>> not be present?
>> >> Our syscons does keyboard probing two times - once early during kernel
>> >> initialization before most of the subsystems have been initialized yet,
>> >> and then "real" probing later in boot process. Interesting thing is that
>> >> initially keyboard looks present. Reading status port in
>> >> atkbdc_configure() gives value other than 0xff, although reading is
>> >> thousand times slower than usually. This causes syscons try attaching
>> >> it. Even though reading status port works, apparently either emulation
>> >> is not complete or there is some other issue, so that it never responds
>> >> to some commands. Slow access and lack of response results in
>> >> wait_for_data() function waiting several minutes instead of 200ms as
>> >> designed. This what causes that 6-10 minutes delay in boot process.
>> >
>> > I believe the USB driver has disabled the keyboard emulation by the time 
>> > the
>> > second probe happens in syscons.  Can you try disabling legacy USB support 
>> > in
>> > the BIOS just to make sure that is what causes the delay?
>>
>> Unfortunately it's not possible. Hosting provider doesn't allow me to
>> have access to BIOS settings.

Stunt double:  I tried it and it has no effect.  The waits in atkdbd
kills it with or without USB legacy support on.  The wait on this
machine is about 1-2 minutes before boot.  Just another data point.

-aps
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