Date: Tue, 09 Dec 2008 10:13:30 -0800 From: Marcel Moolenaar <xcllnt@mac.com> To: Scott Long <scottl@samsco.org> Cc: freebsd-current@freebsd.org, Mike Tancsa <mike@sentex.net> Subject: Re: uart vs sio differences ? Message-ID: <0E8F5AD4-A139-413E-A760-A1BEDDF44BAA@mac.com> In-Reply-To: <493EA759.4000504@samsco.org> References: <200812081621.mB8GLMxB041498@lava.sentex.ca> <ED8BC24F-EAC3-4266-AF54-4C6262DDC156@mac.com> <200812081906.mB8J6oha042222@lava.sentex.ca> <CF6E0ACA-CCFA-4A35-A88F-C95484309A78@mac.com> <200812082049.mB8KnHSN042710@lava.sentex.ca> <84A7F176-5A74-48AC-859A-C0D4C7CBCB48@mac.com> <7.1.0.9.0.20081208173515.13f62e88@sentex.net> <200812091457.mB9EvLSD047534@lava.sentex.ca> <493EA759.4000504@samsco.org>
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On Dec 9, 2008, at 9:14 AM, Scott Long wrote: > That aside, I think what needs to happen is for the driver to use the > interrupt handler to pull the bytes out of the hardware and into an > internal lockless ring buffer, then schedule the swi to process the > ring > buffer. The uart(4) driver is exactly doing what you describe. -- Marcel Moolenaar xcllnt@mac.com
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