Date: Mon, 27 Feb 2006 13:45:52 -0700 From: Scott Long <scottl@samsco.org> To: Ariff Abdullah <ariff@FreeBSD.org> Cc: mi+mx@aldan.algebra.com, re@FreeBSD.org, multimedia@FreeBSD.org Subject: Re: today's 6.1 would not boot here Message-ID: <44036500.4090802@samsco.org> In-Reply-To: <20060228043735.33bddf5d.ariff@FreeBSD.org> References: <20060227105017.77c18b20.ariff@FreeBSD.org> <200602271251.32890.mi%2Bmx@aldan.algebra.com> <44034054.3090104@samsco.org> <200602271321.33055.mi%2Bmx@aldan.algebra.com> <20060228025154.01db3dff.ariff@FreeBSD.org> <44035532.1060408@samsco.org> <20060228043735.33bddf5d.ariff@FreeBSD.org>
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Ariff Abdullah wrote: > On Mon, 27 Feb 2006 12:38:26 -0700 > Scott Long <scottl@samsco.org> wrote: > >>Is this a problem with calibrating the sample rate on the chip? >>There was a problem with snd_ich several years ago where the >>calibration would fail or be unpredictable during boot. I fixed it >>my moving the calibration code to a separate step that gets run via >>the config_intrhook API. That made it work reliably during boot >>and when loaded after boot. Is this new problem somehow related to >>this? Since I was the one who fixed it in the past, I'd be happy to >>help now. >> > > It seems related. From my naked eyes, I can sense that the interrupt > was trigered during/before sampling rate calibration, and since the > calibration expect to not trigger any interrupt, this will cause > unexpected behaviour especially for this MPSAFEed driver *and* during > boot. Besides, the pcm construction also done before the calibration, > unlike snd_atiixp where the hook is use to bring everything alive > after the necessary step is finished. > > > I'll come up with something shortly. > > > -- > Ariff Abdullah > FreeBSD Maybe move the bus_setup_intr() call to after the calibration? If the driver doesn't need interrupts until after calibration, I think that this would cleanly solve the problem. Scott
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