Date: Mon, 10 Mar 2014 14:20:16 -0400 From: John Baldwin <jhb@freebsd.org> To: "John-Mark Gurney" <jmg@funkthat.com> Cc: freebsd-arm <freebsd-arm@freebsd.org>, Ian Lepore <ian@freebsd.org>, freebsd-arch@freebsd.org Subject: Re: option NEW_PCIB Message-ID: <201403101420.16117.jhb@freebsd.org> In-Reply-To: <20140310175249.GH32089@funkthat.com> References: <1394200335.1149.370.camel@revolution.hippie.lan> <201403100945.20298.jhb@freebsd.org> <20140310175249.GH32089@funkthat.com>
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On Monday, March 10, 2014 1:52:49 pm John-Mark Gurney wrote: > John Baldwin wrote this message on Mon, Mar 10, 2014 at 09:45 -0400: > > On Friday, March 07, 2014 9:38:33 am Warner Losh wrote: > > > > > > On Mar 7, 2014, at 6:52 AM, Ian Lepore <ian@FreeBSD.org> wrote: > > > > > > > Every architecture has "option NEW_PCIB" in its conf/DEFAULTS except arm > > > > and mips. Is that on purpose? What are the implications of adding it? > > > > Or maybe more importantly, what are the implications of it not being > > > > there? > > > > > > This is John Baldwin?s option for his reworked PCI bridge code. He did that as > > > a fallback in case he really messed up something. It introduces renumbering > > > of busses that don?t already have numbers assigned. It should be enabled on > > > ARM, but the required resource isn?t defined on arm, and some of the other > > > required glue doesn?t seem to be implemented for arm yet, which is why things > > > are the way they are at the moment. I think John intends for the option to go > > > away, and everything it covers will be ?standard?. > > > > Yes. I just added a page on the wiki about NEW_PCIB explaining the changes > > each platform needs for it in a bit more detail on Friday: > > > > https://wiki.freebsd.org/NEW_PCIB > > > > I have posted patches in the past to arm@ to handle step 2 in the NEW_PCIB > > base requirements for arm@ but haven't been able to get folks to test them. > > I just recently made a new pass through sys/arm in a p4 tree to refresh this. > > I haven't even compiled these yet, but you can find the patch here: > > > > http://people.freebsd.org/~jhb/patches/arm_activate2.patch > > Do you need a fully work system, or is booting fine? If you need a > fully working system, then I need some help figure out my panic.. I sent > email to alc and kib a few days ago about it, but I haven't heard anything > back.. it's a problem w/ vm_page... > > If booting is fine, I can test on my AVILA board I have now.. Well, the system needs to boot far enough to actually use memory and I/O port resources for PCI devices. That probably means getting to at least single user and being able to pass a network packet, etc. -- John Baldwin
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