Date: Fri, 28 Oct 2011 09:15:18 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-arch@freebsd.org Cc: Adrian Chadd <adrian@freebsd.org> Subject: Re: newbus IO ordering semantics - moving forward Message-ID: <201110280915.18111.hselasky@c2i.net> In-Reply-To: <CAJ-VmonFJG3xLn2JvarOUN6o-e7MC%2BA%2B=W9_vocZqY6L3CmTmQ@mail.gmail.com> References: <CAJ-VmonFJG3xLn2JvarOUN6o-e7MC%2BA%2B=W9_vocZqY6L3CmTmQ@mail.gmail.com>
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On Thursday 27 October 2011 22:28:13 Adrian Chadd wrote: > * Make the bus default to use ordered semantics, much like what Linux > does - ie, all IO read/writes (io or memory) are in-order and flushed > with a barrier; I think this is the assumption of many USB controller drivers currently in the tree. --HPS
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