Date: Wed, 09 Apr 2008 15:38:14 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Marcel Moolenaar <xcllnt@mac.com> Cc: arch@freebsd.org, John E Hein <jhein@timing.com> Subject: Re: sync/async [was: Re: tt_ioctl] Message-ID: <45300.1207755494@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 09 Apr 2008 08:36:17 MST." <FD6E3ED5-5315-4F39-9EF0-8C0FC1683802@mac.com>
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In message <FD6E3ED5-5315-4F39-9EF0-8C0FC1683802@mac.com>, Marcel Moolenaar wri tes: >I think the complexity or problems stem from the fact that >there's a single driver. With scc(4) the design is such that >the driving is left to subordinate drivers like uart(4) and >the only thing that scc(4) does is arbitration. Yeah, we have the same thing over at the ppbus. I remember talking with Warner about making this a facility in newbus instead, but I think we had too much beer and too little time :-) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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