From owner-freebsd-hackers Mon Sep 6 19:19:56 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from metriclient-1.uoregon.edu (metriclient-1.uoregon.edu [128.223.172.1]) by hub.freebsd.org (Postfix) with ESMTP id B1DBF14C4B for ; Mon, 6 Sep 1999 19:19:49 -0700 (PDT) (envelope-from gurney_j@efn.org) Received: (from jmg@localhost) by metriclient-1.uoregon.edu (8.9.1/8.8.7) id TAA25214; Mon, 6 Sep 1999 19:18:18 -0700 (PDT) Message-ID: <19990906191818.50407@hydrogen.fircrest.net> Date: Mon, 6 Sep 1999 19:18:18 -0700 From: John-Mark Gurney To: Warner Losh Cc: Andrew Reilly , hackers@FreeBSD.ORG Subject: Re: Limit of bus hierarchies (was Re: PCI modems do not work???) References: <9909061532290G.69570@gurney.reilly.home> <199909060517.XAA02790@harmony.village.org> <199909060541.XAA03034@harmony.village.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.69 In-Reply-To: <199909060541.XAA03034@harmony.village.org>; from Warner Losh on Sun, Sep 05, 1999 at 11:41:29PM -0600 Reply-To: John-Mark Gurney Organization: Cu Networking X-Operating-System: FreeBSD 3.0-RELEASE i386 X-PGP-Fingerprint: B7 EC EF F8 AE ED A7 31 96 7A 22 B3 D8 56 36 F4 X-Files: The truth is out there X-URL: http://resnet.uoregon.edu/~gurney_j/ Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Warner Losh scribbled this message on Sep 5: > In message <9909061532290G.69570@gurney.reilly.home> Andrew Reilly writes: > : So there's going to be manufacturer-specific terminal/serial port drivers > : to talk to the serial ports on USB-attached laptop docking stations, like > : the Annex ethernet terminal server things? I guess in the Windows world > : they must provide 16550-virtualisation software, or else everyone's copy of > : Telix or TeraTerm won't work. Or the parallel ports vs parallel-port > : scanners. Or maybe these docking stations just won't work at all... > > No. The Windows world presents a standard SERIAL DRIVER interface, at > least that's the theory that is preached. I see no reason why a USB > serial port wouldn't do the same. USB defines a serial port > interface, IIRC, which is the same across manufacturers (in theory) > which would be handled by a single USB driver in our USB stack. so, Cyclades (cy) presents an interface similar to sio but ISN'T the sio drive... we just need to write a driver for the USB serial devices that present the same interface as the sio to get a compatible device driver... sio isn't designed to handle a smart device over usb.. it's designed to interface w/ the family of 8250 IC chips and nothing more... -- John-Mark Gurney Voice: +1 541 684 8449 Cu Networking P.O. Box 5693, 97405 "The soul contains in itself the event that shall presently befall it. The event is only the actualizing of its thought." -- Ralph Waldo Emerson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message