On Wed, 2010-09-22 at 18:29 -0400, Michael wrote: > On Sep 22, 2010, at 4:10 PM, Adam Jackson wrote: > > Not even compile-tested, but probably pretty close. OS maintainers > > please to be building. > > > > The FreeBSD backend is the only one that stands a chance of working on > > non-x86, the rest appear to not have _any_ facility for I/O port > > access on other arches. > > We (NetBSD) actually do have this facility since ~forever, it's in use > on most powerpc ports, shark and so on. Otherwise we couldn't use > things like Voodoo3, ct65550 on macppc or any shark onboard graphics > chips in X.
Doesn't appear to be used in the X server, at least from my quick read. You do have /dev/io but the man page says it's deprecated and that closing it doesn't drop iopl, which is a bit bizarre. If there's a better way to be doing it on netbsd, I'm all ears. > > What a pity. Also, none of these have appear to have any facility > > for domainful I/O, so, that won't work either. Meh. > > Whatever you mean by that. If you mean support for more than one PCI > host bridge with associated goo we have that as well. From userspace? - ajax
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