cvs commit: src/sys/dev/pci pci_pci.c pcib_private.h

[M. Warner Losh]

In message: <20040110232115.R49720 at root.org>
            Nate Lawson <nate at root.org> writes:
: On Sat, 10 Jan 2004, Warner Losh wrote:
: >   Modified files:
: >     sys/dev/pci          pci_pci.c pcib_private.h
: >   Log:
: >   Add support for subtractive decoding bridges.  These bridges pass all
: >   signals to addresses to the child busses.  Typically, ProgIf of 1
: >   means a subtractive bridge.  However, Intel has a whole lot of ones
: >   with a ProgIf of 80 that are also subtractive.  We cope with these
: >   bridges too.  This eliminates hw.pci.allow_unsupported_io_range
: >   because that had almost the same effect as these patches (almost means
: >   'buggy').  Remove the bogus checks for ISA bus locations: these cycles
: >   aren't special and are only passed by transparent bridges.
: >
: >   We allow any range to succeed.  If the range is a superset of the
: >   range that's decoded, trim the resource to that range.  Otherwise,
: >   pass the range unchanged.  This will change the location that PC Card
: >   and CardBus cards are attached.  This might bogusly cause some
: >   overlapping allocation that wasn't present before, but the overlapping
: >   fixes need to be in the pci level.
: >
: >   There's also a few formatting changes here.
: >
: >   Revision  Changes    Path
: >   1.29      +126 -159  src/sys/dev/pci/pci_pci.c
: >   1.6       +2 -0      src/sys/dev/pci/pcib_private.h
: 
: Woo hoo!  Scary also.  :)

Tell me about it :-)

I'll likely tease out the resource allocation stuff from the power
stuff once I get it fixed to try to do allocations that are properly
aligned.

Warner