Date: Thu, 08 Nov 2007 12:17:59 +0100 From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@deepcore.dk> To: Ian Smith <smithi@nimnet.asn.au> Cc: freebsd-stable@FreeBSD.ORG, Henrik Brix Andersen <brix@FreeBSD.ORG>, sos@FreeBSD.ORG Subject: Re: 7 on Soekris net4801? Message-ID: <4732F067.7080601@deepcore.dk> In-Reply-To: <Pine.BSF.3.96.1071104143110.4759A-100000@gaia.nimnet.asn.au> References: <Pine.BSF.3.96.1071104143110.4759A-100000@gaia.nimnet.asn.au>
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Ian Smith wrote: > On Sat, 3 Nov 2007, Henrik Brix Andersen wrote: > > On Sun, Nov 04, 2007 at 02:59:36AM +1100, Ian Smith wrote: > > > any particular/new issues with RELENG_7 on the Soekris net4801? > > > > > > Thought I should check before upgrading my T23 as a build platform .. > > > I haven't done this before, and will be relying on the howtos for 6.X > > > > I recently upgraded two of my net4801s to RELENG_7 - the only problem > > I have seen so far, is that savecore(8) attempts to do non-aligned DMA > > transfers and fails. I haven't had time to dig further into this issue > > yet, though. > > Thanks, Brix. I'm wondering if that's still (again?) to do with item 3 > at http://www.soekris.com/Issue0003.htm ? I've no idea whether a similar > 'quick-fix' to that given for FreeBSD 4.X to /sys/dev/ata/ata-dma.c > would work with the 5.5-S and 6.1-R code I have here, noting that the > alignment is now specified in bytes rather than the earlier bytes-1, so > '4' is presumably the value needed for dword alignment. > > Hmm, ok, trying to dig a little deeper .. rev 1.118 notes say: > > Add support for a the National Geode SC1100. Thanks to Soekris engineering > for sponsoring a Soekris 4801 to make this support. > > but I couldn't find anywhere in 1.118 or in later versions up to 1.147 > (RELENG_7, HEAD) that does anything other than 'ch->dma->alignment = 2;' > > (Not that me not finding it means much :) I also noticed at 1.137.2.2: > > Add support for using DMA on dump, greatly speeds up the dump process. > > Copying Soren in case he may have a bead on this, but it hardly seems > any impediment to preparation or building for it when the box arrives. > > Actually aligment is set to 16 but a bit untraditionally in ata_national_setmode(). I should change that to do it in an ata_national_allocate() function which now can contain just a few lines. I'd figure that the problem is that the geode chip doesn't support 128 sector writes just up to 126, that is not honered from the dump rutine IIRC. -Søren
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