IBM R40 FFixedHW register?

[Nate Lawson <nate-Y6VGUYTwhu0@public.gmane.org>]

I'm testing out my new cpu driver for FreeBSD and came across an
interesting case in supporting Px states.  They work great on several
laptops but the R40 can't set Px states.  I looked at the ASL and found
that the control/status register pair is FFixedHW.

            Return (Package (0x02)
            {
                ResourceTemplate ()
                {
                    Register (FFixedHW, 0x40, 0x00, 0x0000000000000199)
                },

                ResourceTemplate ()
                {
                    Register (FFixedHW, 0x10, 0x00, 0x0000000000000198)
                }
            }

I guess I have to find the datasheet for that model to figure out how to
access those registers.  Anyone come across this before?  What space are
those actually in (IO, Memory, ??).  The register widths are also strange
(64 and 16 bits).

Thanks,
Nate


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