svn commit: r188018 - in head: sys/dev/pci usr.sbin/pciconf

[Robert Noland]

On Wed, 2009-02-25 at 12:51 -0500, John Baldwin wrote:
> On Wednesday 25 February 2009 12:27:23 pm Nathan Whitehorn wrote:
> > John Baldwin wrote:
> > > Author: jhb
> > > Date: Mon Feb  2 19:54:16 2009
> > > New Revision: 188018
> > > URL: http://svn.freebsd.org/changeset/base/188018
> > > 
> > > Log:
> > >   - Add a new ioctl to /dev/pci to fetch details on an individual BAR of a
> > >     device.  The details include the current value of the BAR (including all
> > >     the flag bits and the current base address), its length, and whether or not
> > >     it is enabled.  Since this operation is not invasive, non-root users are
> > >     allowed to use it (unlike manual config register access which requires
> > >     root).  The intention is that userland apps (such as Xorg) will use this
> > >     interface rather than dangerously frobbing the BARs from userland to
> > >     obtain this information.
> > >   - Add a new sub-mode to the 'list' mode of pciconf.  The -b flag when used
> > >     with -l will now list all the active BARs for each device.
> > >
> > 
> > Do you happen to have any patches for libpciaccess to use this?
> > 
> > Libpciaccess (and so the latest Xorg server) hoses my PowerPC machine 
> > when trying to list BARs, but pciconf -b works correctly. There are 
> > probably endianness problems in the libpciaccess code, and it would be 
> > nice to just replace that mess with this interface.
> 
> No, I don't have any patches.  rnoland@ might.  This interface was explicitly
> designed to replace mess in libpciaccess. :)

I still need to work on getting this into libpciaccess.  It's
complicated by the fact that we still need to keep the existing code in
place and only use the new ioctl where it exists...

I'll try and get a patch together soon.

robert.

-- 
Robert Noland <rnoland at FreeBSD.org>
FreeBSD
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