Date: Wed, 19 Nov 2008 15:40:30 -0500 From: Jung-uk Kim <jkim@FreeBSD.org> To: Jan Sebosik <sebosik@demax.sk> Cc: freebsd-hardware@FreeBSD.org Subject: Re: Frebsd 7-STABLE, atapicd, atapicam and Intel errors [SOLVED] Message-ID: <200811191540.33629.jkim@FreeBSD.org> In-Reply-To: <49247431.2000800@demax.sk> References: <20081119115311.GA85626@icarus.home.lan> <200811191307.02765.jkim@FreeBSD.org> <49247431.2000800@demax.sk>
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On Wednesday 19 November 2008 03:16 pm, Jan Sebosik wrote: > Jung-uk Kim napsal(a): > > On Wednesday 19 November 2008 12:01 pm, Jan Sebosik wrote: > >> Hi > >> > >> so I`ve played with it again, and results are strange. > >> > >> Regardless if HPET is enabled or not.. FreeBSD with atapicd > >> kldloaded won`t mount /dev/acd1 (mounting /dev/cd0 works). When > >> I tryied to mount acd0 it still hangs at READ_BIG TIMEOUT. > >> > >> When I left CD in drive, and rebooted (I wanted to switch > >> HPET), it freezes on cd0 initialization with READ_BIG timeout (I > >> think it`s causing GEOM_LABEL module trying to read CD label). > >> > >> So I think that disabling GEOM_LABEL would help a little. > >> > >> I`ll try on friday with another SATA DVD drive if it`s not a bug > >> inside firmware of LG :) . > >> > >> > >> Best regards, Jan > >> > >> Jeremy Chadwick napsal(a): > >>> On Wed, Nov 19, 2008 at 03:24:40PM +0100, Jonas Lund wrote: > >>>> (NOTICE: i'm more of a lowlevel guy close to hardware guy not > >>>> knowing much of freebsd internals) > >>>> > >>>> The fact that FreeBSD is NOT using HPET for timing might be > >>>> the answer to the "mystery". The HPET hardware might be/get > >>>> enabled but not handled and firing tons of unexpected > >>>> interrupts (as you said.. linux produces tons of data into the > >>>> log, what's the actual content of those logs?). > >>>> > >>>> These interrupts in turn might disturb the cd drive in some > >>>> fashion? > >>>> > >>>> Can you bring up some interrupt statistics in freebsd? like a > >>>> counter of the number of events? > >>> > >>> First and foremost, thanks for chiming in, Jonas. The more > >>> eyes on this matter the merrier. > >>> > >>> vmstat -i can provide interrupt rate and count in FreeBSD, > >>> e.g.: > >>> > >>> interrupt total rate > >>> irq1: atkbd0 227 0 > >>> irq6: fdc0 10 0 > >>> irq17: uhci1++ 4479741 10 > >>> cpu0: timer 814684046 2000 > >>> irq256: em0 17219212 42 > >>> cpu1: timer 814683722 2000 > >>> Total 1651066958 4053 > >>> > >>>> 2008/11/19 Jan Sebosik <sebosik@demax.sk>: > >>>>> [snip] > >>>>> > >>>>>> Okay now I understand. Thank you for taking the time to > >>>>>> explain! :-) > >>>>>> > >>>>>> And when you disable HPET in the BIOS, what happens? > >>>>>> > >>>>>>> Maybe I should try -CURRENT sometimes with your proposed > >>>>>>> ata patches (or are they merged in right now?). > >>>>>> > >>>>>> Sure, you're free to try CURRENT. The ATA code on CURRENT > >>>>>> was modularised, and also a very large patch applied; I > >>>>>> can't promise it fixes your CD/DVD drive issues though. > >>>>>> > >>>>>> I had problems getting CURRENT to see my PCI SATA Promise > >>>>>> controller (it wasn't appearing in pciconf -lv, nor dmesg), > >>>>>> but I had no problems with CURRENT seeing my ICH7 > >>>>>> controller. I also had other problems with CURRENT which > >>>>>> caused me to go back to RELENG_7. CURRENT is undergoing > >>>>>> lots of changes right now, so I recommend subscribing to > >>>>>> -current if you plan on running it. > >>>>>> > >>>>>> I personally haven't written any ATA patches, except for > >>>>>> extending atacontrol to support per-disk write cache > >>>>>> enable/disable. I think you might be confusing me with > >>>>>> Andrey V. Elsukov, who *has* written lots of ATA stuff. > >>>>> > >>>>> Now happens almost nothing (I don`t understand), except the > >>>>> cd/acd problems (READ_BIG errors), but I don`t understand why > >>>>> it is happening.. maybe guys from Intel optimized this board > >>>>> too much for twista OS :). > > > > Can you try the attached patch with HPET enabled from BIOS? > > Sorry, it will not solve the cd/acd problems but I have a hunch > > that it may solve the HPET problem. > > > > Thanks, > > > > JK > > Hi > > I`ve tried your patch right now, but didn`t notice any change in > machine`s behavior. Okay. I just went ahead and committed it because that's the right thing to do any way. :-) Thanks for the feedback. Jung-uk Kim
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