svn commit: r222795 - head/sys/dev/atkbdc

[John Baldwin]

On Tuesday, June 07, 2011 3:08:29 pm Jung-uk Kim wrote:
> On Tuesday 07 June 2011 02:02 pm, John Baldwin wrote:
> > On Tuesday, June 07, 2011 11:39:26 am Jung-uk Kim wrote:
> > > On Tuesday 07 June 2011 09:52 am, John Baldwin wrote:
> > > The whole point of this commit is to blacklist *recent* BIOS (or
> > > CSM) from probing keyboard typematic information, more
> > > specifically, recent Intel chipset platforms.  They don't support
> > > many INT 15h/16h functions but only cause trouble at best.  OTOH,
> > > I haven't seen such problems with AMD chipset systems and they
> > > all seem to have traditional entry points at the interrupt vector
> > > table, for example.
> >
> > Err, but you didn't blacklist recent BIOS.  You blacklist _all_
> > BIOS that use entry points other than the ones from the UEFI spec,
> > including BIOSes that don't claim to support UEFI and the BIOS from
> > the two systems I quoted.
> 
> Relax.  The entry points were originally from IBM PC/AT and PS/2 
> systems and UEFI CSM spec. was written to ensure backward 
> compatibility with the *real* BIOS.  I am quite sure your BIOS 
> doesn't support keyboard typematic, i.e., it doesn't have sufficient 
> compatibility with the original IBM BIOS.  If it does, I'll happily 
> revert the change. :-)

Hmm, I had not expected such consistency among BIOS implementations given
the number of vendors, etc.  I would probably be fine with just removing
this feature entirely though unless it is truly useful.

-- 
John Baldwin